CN110017543A - Air conditioner, cleaning control method and computer readable storage medium - Google Patents

Abstract

The present invention provides an air conditioner, a cleaning control method, and a computer-readable storage medium, wherein the air conditioner comprises: an air conditioner casing, and an air inlet and a plurality of air outlets are correspondingly opened on the air conditioner casing; and a plurality of fan assemblies , set close to a plurality of air outlets, including a first fan assembly and a second fan assembly; evaporator, set close to the air inlet, including a first evaporation module and a second evaporation module arranged side by side from top to bottom, the first evaporation module and The first fan assembly is set correspondingly, and the second evaporation module is set correspondingly with the second fan assembly. During the operation of the air conditioner, the refrigerant flow rate of the first evaporation module is controlled to be reduced, so that the air flow entering the air conditioner housing is changed with the first fan assembly. The heat module is frosted after heat exchange, and the refrigerant flow of the first evaporation module is controlled to increase to defrost, so as to generate condensed liquid that cleans the evaporator. Through the technical solution of the present invention, the evaporator can be cleaned while performing the refrigeration operation.

Description

Air conditioner, cleaning control method, and computer-readable storage medium

technical field

The present invention relates to the technical field of air conditioners, and in particular, to an air conditioner, a cleaning control method, and a computer-readable storage medium.

Background technique

In the related art, a cross-flow fan or a centrifugal fan is arranged inside the air conditioner, and the air outlet opened on the cabinet body of the air conditioner realizes the air supply to the outside. During the operation, there are still the following defects:

Since the number of air outlets is only one, when the indoor evaporator needs to be cleaned, it can only be achieved by reducing the speed of the fan, and reducing the speed of the fan will reduce the cooling effect and affect the cooling demand of users. .

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

To this end, an object of the present invention is to provide an air conditioner.

Another object of the present invention is to provide a cleaning control method.

Another object of the present invention is to provide a computer-readable storage medium.

In order to achieve the above object, according to an embodiment of the first aspect of the present invention, an air conditioner is provided, comprising: an air conditioner casing, wherein an air inlet and a plurality of air outlets are correspondingly opened on the air conditioner casing; A fan assembly, disposed near the plurality of air outlets, includes a first fan assembly and a second fan assembly; an evaporator, disposed close to the air inlet, including a first evaporation module and a second evaporation module arranged side by side from top to bottom , the first evaporation module is arranged corresponding to the first fan assembly, the second evaporation module is arranged corresponding to the second fan assembly, wherein, during the operation of the air conditioner, the reduction of the The refrigerant flow of the first evaporation module and/or the control to reduce the rotational speed of the first fan assembly to form frost on the first heat exchange module, and after the frost is formed, control to increase the rotation speed of the first evaporation module. The refrigerant flow and/or control increases the rotational speed of the first fan assembly to defrost, so as to generate condensed liquid that cleans the evaporator.

In this technical solution, an air inlet is provided on the rear panel of the air conditioner housing, a plurality of air outlets are longitudinally provided on the front panel, and an evaporator and multiple sets of fan assemblies are arranged in sequence between the air inlet and the air outlet. , wherein, multiple sets of fan assemblies and multiple air outlets are correspondingly arranged one by one, so as to be driven by the fan assemblies to discharge air from the corresponding air outlets, the evaporator includes multiple heat exchange modules, and the multiple heat exchange modules are connected with the multiple sets of fan assemblies one by one. Corresponding settings are formed to form multiple sets of matching modules of heat exchange module-fan assembly-air outlet, so as to realize multiple parallel air outlet air ducts. Further, by setting expansion valves on the refrigerant input branch of the first heat exchange module, By adjusting the opening degree of the expansion valve, the evaporation pressure of the first heat exchange module is adjusted, so that the airflow passing through the first heat exchange module is liquefied by heat exchange, and the liquefied liquid flows downward through the outer surface of the evaporator. , can wash away the dirt on the surface of the evaporator, and then realize the cleaning of the evaporator.

In addition, through the arrangement of multiple parallel air outlet air ducts, the uppermost air outlet air duct will export the remaining part of the airflow after heat exchange with the first heat exchange module, and the other air outlet air ducts can normally perform cooling and air outlet, thereby Simultaneous execution of cooling and cleaning can be achieved, and through the arrangement of multiple air outlets, the air volume can be increased relative to one air outlet. Compared with the air conditioner with only one air outlet, the cooling operation will not be affected by the execution of the cleaning operation. Effect.

In addition, each group of fan components adopts at least one axial flow fan structure. Compared with perfusion fans or centrifugal fans, axial flow fans can increase the air supply distance while reducing operating noise. The evaporator cooperates with the air outlet to achieve straight air outlet, which is also conducive to improving the circulation efficiency of the air flow.

In the above technical solution, optionally, the controller is electrically connected to the plurality of fan assemblies respectively; a first electronic expansion valve is provided on the input flow path of the first evaporation module, and the second evaporation module is provided with a first electronic expansion valve. A second electronic expansion valve is arranged on the input flow path of the device, and the first electronic expansion valve and the second electronic expansion valve are respectively electrically connected to the controller, wherein the controller controls the reduction of the The opening degree of the first electronic expansion valve and/or increasing the opening degree of the second electronic expansion valve reduces the refrigerant flow of the first evaporation module, so that the surface of the first evaporation module is frosted.

In any of the above technical solutions, optionally, the controller is further configured to: after the surface of the evaporator is frosted, control to increase the opening degree of the first electronic expansion valve, so as to operate by defrosting form a liquid.

In this technical solution, the evaporator is divided into at least two evaporation modules that independently control the input of the refrigerant to form a plurality of independent refrigerant control flow paths. The electronic expansion valve has different opening degrees, and the corresponding evaporation modules have different evaporation pressures. The first evaporation module in the upper part has a smaller evaporation pressure. With the lower speed of the corresponding first fan assembly, it can achieve The surface of the evaporation module is frosted, and by increasing the opening, the surface is further defrosted, and the liquid obtained by defrosting flows through the surface of the evaporator to achieve the cleaning effect of the evaporator.

Before the cleaning operation is performed, the first electronic expansion valve on the first evaporation module and the second electronic expansion valve on the second evaporation module have the same opening degree. When the cleaning operation is performed, the operating frequency of the compressor is not changed. Under the premise, by reducing the opening degree of the first electronic expansion valve, or increasing the opening degree of the second electronic expansion valve, the evaporation pressure of the first evaporation module is reduced, and the heat exchange frosting is realized.

Or by reducing the rotational speed of the first fan assembly or controlling the first fan assembly to stop running, frost formation on the surface of the first evaporation module can also be achieved.

The multiple air outlets include the upper air outlet and the lower air outlet. The upper air outlet is used to export the air after cleaning and heat exchange, and the lower air outlet is used for cooling air supply. The fan runs at a lower speed, and the fan corresponding to the lower air outlet is controlled to run at a higher speed, that is, the air supply speed of the upper air outlet is less than that of the lower air outlet. Correspondingly, a counter-cyclone fan is set up, and an axial flow fan is correspondingly set at the upper air outlet. It is also possible to set a counter-cyclone fan at the lower air outlet and the upper air outlet, but the counter-cyclone fan that controls the upper air outlet runs at a lower gear, so that Through the opening of the upper air outlet and the lower air outlet, the corresponding fan components, and the first heat exchange module and the lower heat exchange module provided with the expansion valve, the synchronous control execution of the cleaning of the evaporator and the cooling of the indoor unit can be realized, so as to improve the performance. User experience comfort.

In any of the above technical solutions, optionally, the plurality of air outlets include an upper air outlet and a lower air outlet, the first fan assembly is correspondingly disposed on the upper air outlet, and the second fan assembly corresponds to It is arranged at the lower air outlet; the controller is further configured to: in the process of cleaning the evaporator, control the outlet wind speed of the first fan assembly to be lower than the wind speed of the second fan assembly to run through the first fan assembly. The second fan assembly performs cooling and air supply.

In this technical solution, when the cleaning operation of the evaporator is performed, the first evaporating module is controlled by controlling the first fan assembly to run at a smaller outlet wind speed and the second fan assembly to run at a larger outlet wind speed. It can fully exchange heat with the surface air flow, and ensure that the second evaporation module and the corresponding second fan assembly perform the normal cooling operation, so as to realize the cleaning function of the evaporator without affecting the cooling function of the air conditioner itself, which can meet the needs of users. At the same time of demand, it is beneficial to improve the service life of the air conditioner.

In any of the above technical solutions, optionally, the first fan assembly is formed by a first fan and a second fan that rotate in opposite directions, and the first fan and the second fan are axial flow fans or inclined fans. A flow fan, the first fan is arranged close to the evaporator, and the second fan is arranged close to the air outlet; the second fan assembly is a single axial flow fan, diagonal flow fan, cross flow fan or centrifugal fan any of the .

In any of the above technical solutions, optionally, the controller is further configured to: control and adjust the rotation speed of the first fan to be greater than or equal to the rotation speed of the second fan, and the rotation speed of the first fan is the same as the rotation speed of the second fan. A rotational speed difference between rotational speeds of the second fan is less than or equal to a rotational speed difference threshold, wherein the rotational speed difference threshold is determined according to size parameters of the first fan and size parameters of the second fan.

In this technical solution, the counter-cyclone fan includes at least a first fan and a second fan arranged side by side in the axial direction. After the air flow after heat exchange is pressurized by the first fan, it is driven by the second fan from the corresponding fan. The air outlet is discharged, combined with the limitation of the fan speed of the first fan and the fan speed of the second fan and the relative relationship between the two, so as to realize the narrow-angle air supply, that is, a smaller air outlet range is formed after passing through the air outlet. However, it has a long air supply distance, thereby accelerating the indoor air circulation, thereby ensuring the cleaning effect and improving the indoor temperature drop efficiency.

Specifically, the first fan assembly installed with the upper air outlet may include a first fan and a second fan arranged in opposite directions, the first fan is used to increase the wind pressure, and the second fan plays the role of gathering wind. Therefore, the first fan The fan and the second fan work together to expand the blowing distance to achieve narrow-angle air supply, that is, to increase the air supply distance and to accelerate indoor air circulation.

In any of the above technical solutions, optionally, it further includes: a temperature and humidity sensor, which is electrically connected to the controller, and the temperature and humidity sensor is used to collect ambient temperature and ambient humidity, wherein if the control The device detects that the ambient temperature is greater than the preset temperature threshold and the ambient humidity is greater than the first ambient humidity threshold, and adjusts the opening of the first electronic expansion valve and/or the wind speed of the first fan assembly to start In the cleaning operation, if the controller detects that the ambient humidity drops below a second ambient humidity threshold, the controller ends the cleaning operation, and the first ambient humidity threshold is greater than the second ambient humidity threshold.

In this technical solution, when the air conditioner is equipped with a controller and a temperature and humidity sensor, it is detected that the indoor ambient humidity reaches S1 (the first humidity threshold) or higher, and the indoor ambient temperature reaches T1 (the first temperature threshold) at the same time. ) or above, the automatic control enters the cleaning mode. In this mode, the comfortable dehumidification function is realized by adjusting the compressor frequency, the opening degree of the electronic expansion valve and the rotational speed of the axial flow fan, and the indoor ambient humidity is as low as S2 (No. 2 humidity threshold), it automatically exits the cleaning mode, and automatically dehumidifies the operation by monitoring the ambient temperature and humidity, which simplifies the user's operation steps.

In any of the above technical solutions, optionally, it further includes: a compressor, electrically connected to the controller, and connected to the evaporator through a refrigerant flow path, wherein the controller is further used for : Adjust the opening of the first electronic expansion valve according to the tube temperature of the first evaporation module, the return air temperature of the air inlet and the operating frequency of the compressor, and/or according to the tube temperature of the second evaporation module The opening degree of the second electronic expansion valve is adjusted according to the temperature, the return air temperature of the air inlet and the operating frequency of the compressor.

In this technical solution, the electronic expansion valve is opened by combining with one or more of the detected temperature value of the evaporator temperature sensor and other such as exhaust temperature sensor, indoor return air temperature, compressor operating frequency, etc. The temperature can be adjusted separately to achieve different condensing temperature settings, control the air outlet temperature of each air outlet separately, and realize the clean air outlet through the upper air outlet and the normal cooling air outlet through the second air outlet at the lower part.

Optionally, according to an embodiment of the second aspect of the present invention, a cleaning control method is provided, comprising: if it is detected that a cleaning mode is entered, controlling to reduce the refrigerant flow rate of the first evaporation module and/or controlling to reduce The rotational speed of the first fan assembly to form frost on the first heat exchange module, and after the frost is formed, control to increase the refrigerant flow rate of the first evaporation module and/or control to increase the first fan The rotational speed of the assembly defrosts to generate condensed liquid that cleans the evaporator.

In this technical solution, the evaporator is divided into at least two evaporation modules that independently control the input of the refrigerant to form a plurality of independent refrigerant control flow paths. The electronic expansion valve has different opening degrees, and the corresponding evaporation modules have different evaporation pressures. The first evaporation module in the upper part has a smaller evaporation pressure. With the lower speed of the corresponding first fan assembly, it can achieve The surface of the evaporation module is frosted, and by increasing the opening, the surface is further defrosted, and the liquid obtained by defrosting flows through the surface of the evaporator to achieve the cleaning effect of the evaporator.

Before the cleaning operation is performed, the first electronic expansion valve on the first evaporation module and the second electronic expansion valve on the second evaporation module have the same opening degree. When the cleaning operation is performed, the operating frequency of the compressor is not changed. Under the premise, by reducing the opening degree of the first electronic expansion valve, or increasing the opening degree of the second electronic expansion valve, the evaporation pressure of the first evaporation module is reduced, and the heat exchange frosting is realized.

Or by reducing the rotational speed of the first fan assembly or controlling the first fan assembly to stop running, frost formation on the surface of the first evaporation module can also be achieved.

In the above technical solution, optionally, the first evaporation module is provided with a first electronic expansion valve for controlling the flow of refrigerant, and the second evaporation module is provided with a second electronic expansion valve. The cleaning control method is specifically The method includes: after entering the cleaning mode, controlling to reduce the opening of the first electronic expansion valve to reduce the refrigerant flow of the first evaporation module and to reduce the evaporation pressure of the first heat exchange module , frost is formed on the first heat exchange module; if it is detected that the tube temperature of the first evaporation module rises to a preset tube temperature threshold, the opening degree of the first electronic expansion valve is controlled to increase, so as to pass the melting Frost forms the liquid.

In this technical solution, a temperature sensing package is set on the U-shaped tube of the first heat exchange module, and the temperature change of the U-shaped tube is monitored through the temperature sensing package, and the state of the airflow passing through the first heat exchange module is gaseous-solid- In the liquid state, by increasing the opening of the expansion valve, the tube temperature of the upper evaporation module drops rapidly, so that frost forms when the airflow flows through the upper evaporation module, and the tube temperature rises as the upper evaporation module absorbs heat gradually. When the tube temperature rises to be greater than or equal to the preset tube temperature threshold, the control increases the opening of the expansion valve again to achieve frost holding, thereby forming liquid, and the liquid flows down the evaporator to achieve the cleaning of the evaporator. Combined with the cooling air supply from the lower air outlet, the cooling function and the self-cleaning function can be executed in parallel without interfering with each other, which increases the comfort of the air conditioner.

In any of the above technical solutions, optionally, it further includes: according to the pipe temperature of the first evaporation module, the exhaust temperature of the compressor, the return air temperature of the air inlet, and the temperature of the compressor. At least one of the operating frequencies determines an opening degree adjustment parameter of the first electronic expansion valve, so as to adjust the opening degree according to the opening degree adjustment parameter, and frost is formed on the first heat exchange module.

In this technical solution, since the control of the expansion valve is related to the operating frequency of the compressor, the discharge temperature of the compressor, the return air temperature of the indoor unit, and the induction temperature of the evaporator, etc., it needs to be based on at least one of the above parameters. This is to determine the opening adjustment coefficient, that is, how to adjust the opening of the expansion valve. For example, when the operating frequency of the compressor is high, the opening of the expansion valve needs to be increased by a large amount, and when the operating frequency is low, only the A small increase, such as when the return air temperature is high, indicates that the temperature of the airflow entering the air inlet is high. At this time, a small opening degree of the muscle can be increased, and the corresponding evaporative pressure can be set for different functions to achieve Simultaneous realization of cooling and dehumidification functions.

In any one of the above technical solutions, optionally, the plurality of air outlets include an upper air outlet corresponding to the first fan assembly, and after entering the cleaning mode, the first air outlet is controlled to decrease the first air outlet. The opening degree of the electronic expansion valve is to reduce the refrigerant flow of the first evaporation module, so that the evaporation pressure of the first heat exchange module is reduced, and frost is formed on the first heat exchange module, further comprising: After controlling to reduce the opening degree of the first electronic expansion valve, the operating gear of the first fan assembly corresponding to the upper air outlet is determined according to the relationship between the ambient temperature and the second temperature threshold.

In this technical solution, in the process of controlling the first increase of the opening degree of the expansion valve, the operating gear of the first fan assembly corresponding to the upper air outlet is determined by detecting the relationship between the ambient temperature and the second temperature threshold, Therefore, the air can be discharged in combination with the actual ambient temperature, so as to realize the cleaning function of the evaporator through the circulation of the air flow cleaned by the user.

In any of the above technical solutions, optionally, the operating gears include a high wind gear, a medium-high wind gear, a medium wind gear, a medium-low wind gear, and a low wind gear, and are determined according to the relationship between the ambient temperature and the second temperature threshold The operating gear of the first fan assembly corresponding to the upper air outlet specifically includes: when it is detected that the ambient temperature is less than or equal to the second temperature threshold, controlling the first fan assembly to run at a rotational speed corresponding to a low wind gear; When the ambient temperature is greater than the second temperature threshold, the first fan assembly is controlled to operate at a rotational speed corresponding to a medium-low wind speed.

In this technical solution, according to the actual operation requirements of the fan assembly, the operating gears can be divided into five gears, which specifically include high wind gear, medium-high wind gear, medium wind gear, medium-low wind gear and low wind gear. In order to improve the frosting efficiency of the airflow of the heat exchange module, the corresponding first fan assembly needs to operate at a lower speed (such as low-medium wind gear and low wind gear), combined with the preset second temperature threshold, to determine according to When the ambient temperature is detected to be greater than the second temperature threshold, it indicates that the current ambient temperature is relatively high. At this time, by using the medium and low wind gear operation, while ensuring sufficient frost, there are also It is beneficial to improve the indoor cooling effect. When it is detected that the ambient temperature is less than or equal to the second temperature threshold, it indicates that the current ambient temperature is low, and the operating gear is lowered to ensure the efficiency of frosting.

In any one of the above technical solutions, optionally, if it is detected that the tube temperature of the first evaporation module rises to a preset tube temperature threshold, the opening degree of the first electronic expansion valve is controlled to increase, so as to The liquid is formed by defrosting, further comprising: after controlling to increase the opening degree of the first electronic expansion valve, controlling to increase the operating gear of the first fan assembly to defrost.

In this technical solution, after the opening degree of the expansion valve is controlled to be increased again, the heat exchange efficiency between the airflow and the frosting is improved by increasing the operating gear of the first fan assembly, so as to improve the flow rate and flow of the liquid, so that the Be sure to have enough liquid for cleaning the evaporator.

In any of the above technical solutions, optionally, the plurality of air outlets further include a lower air outlet corresponding to the second fan assembly, and the cleaning control method further includes: after entering the cleaning mode, controlling all the air outlets. The second fan assembly performs cooling and air supply through the lower air outlet, wherein the operating gear of the second fan assembly is higher than the operating gear of the first fan assembly.

In this technical solution, when each group of fan assemblies includes two axial flow fans, the two axial flow fans can be configured to form a counter-cyclone fan by being oppositely arranged. At the same time, it can improve the ventilation effect.

Specifically, the plurality of air outlets include an upper air outlet and a lower air outlet, the upper air outlet is used to export the air after cleaning and heat exchange, and the lower air outlet is used for cooling and supplying air. The fan corresponding to the air outlet runs at a lower speed, and the fan corresponding to the lower air outlet is controlled to run at a higher speed, that is, the air supply speed of the upper air outlet is lower than that of the lower air outlet. A counter-cyclone fan is set corresponding to the lower air outlet, and an axial flow fan is correspondingly set at the upper air outlet. It is also possible to set a counter-cyclone fan at the lower air outlet and the upper air outlet, but the counter-cyclone fan that controls the upper air outlet is in a lower gear. Operation, so that the cleaning of the evaporator and the cooling of the indoor unit can be realized through the opening of the upper air outlet and the lower air outlet, the matching corresponding fan components, and the first heat exchange module and the lower heat exchange module provided with the expansion valve. , in order to improve the comfort of the user experience.

In any one of the above technical solutions, optionally, the counter-cyclone fan includes a first fan disposed close to the air inlet and a second fan disposed close to the air outlet, and the cleaning control method further includes: controlling the first fan to run at a first rotational speed and the second fan runs at a second rotation speed, so that the narrow-angle air supply is performed, wherein the first rotation speed and the second rotation speed are determined according to the body size of the air conditioner, the number of blades of the first fan and the second fan, and the first rotation speed and the second rotation speed are determined according to the air conditioner. The difference between the rotational speed and the second rotational speed is less than the specified speed difference threshold.

In this technical solution, the counter-cyclone fan includes at least a first fan and a second fan arranged side by side in the axial direction. After the air flow after heat exchange is pressurized by the first fan, it is driven by the second fan from the corresponding fan. The air outlet is discharged, combined with the limitation of the fan speed of the first fan and the fan speed of the second fan and the relative relationship between the two, so as to realize the narrow-angle air supply, that is, a smaller air outlet range is formed after passing through the air outlet. However, it has a long air supply distance, thereby accelerating the indoor air circulation, thereby ensuring the cleaning effect and improving the indoor temperature drop efficiency.

In any of the above technical solutions, optionally, it further includes: determining the operating gear of the second fan assembly corresponding to the lower air outlet according to the difference between the ambient temperature and the target temperature, wherein the second fan assembly The operating gears include high wind gear, medium high wind gear and mid wind gear.

In this technical solution, in order to ensure that the air duct corresponding to the upper air outlet and the air duct corresponding to the lower air outlet perform air flow circulation independently of each other, the upper air outlet and the lower air outlet are controlled to discharge air at different wind speeds. The wind is responsible for cooling, so a higher wind speed is required. Therefore, when the first fan assembly above operates in a medium-low wind gear or a low wind gear, the second fan assembly is controlled to use one of the high wind gear, medium-high wind gear or medium wind gear. This kind of operation to ensure the cooling effect.

In any of the above technical solutions, optionally, before entering the cleaning mode, the method further includes: when it is detected that the current ambient temperature is greater than the first temperature threshold and the current ambient humidity is greater than the preset first humidity threshold , to control the air conditioner to enter the cleaning mode.

In any one of the above technical solutions, optionally, after entering the cleaning mode, the method further includes: when it is detected that the ambient humidity is less than the second humidity threshold, controlling the air conditioner to exit the cleaning mode; after exiting the cleaning mode, the air conditioner The appliance stops running, or all the air outlets perform cooling and air supply, wherein the second humidity threshold is smaller than the first humidity threshold.

In this technical solution, when the air conditioner is equipped with a controller and a temperature and humidity sensor, it is detected that the indoor ambient humidity reaches S1 (the first humidity threshold) or higher, and the indoor ambient temperature reaches T1 (the first temperature threshold) at the same time. ) or above, the automatic control enters the cleaning mode. In this mode, the comfortable dehumidification function is realized by adjusting the compressor frequency, the opening degree of the electronic expansion valve and the rotational speed of the axial flow fan, and the indoor ambient humidity is as low as S2 (No. 2 humidity threshold), it automatically exits the cleaning mode, and automatically dehumidifies the operation by monitoring the ambient temperature and humidity, which simplifies the user's operation steps.

In any of the above technical solutions, optionally, before entering the cleaning mode, the method further includes: controlling the air conditioner to enter the cleaning mode under the condition that a cleaning instruction sent by the remote control device is detected and received.

In this technical solution, whether to enter the cleaning mode can also be determined through the received control signal, so as to realize the comfortable dehumidification function based on user control, which has higher control flexibility than the control scheme of automatically entering the cleaning mode.

According to the technical solution of the third aspect of the present invention, there is also provided a computer-readable storage medium on which a computer program is stored, and when the computer program is executed, the cleaning control method defined in any of the above-mentioned technical solutions is implemented.

Additional aspects and advantages of the present invention will be presented in the description which follows, in part, which will become apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 shows a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

Fig. 2 shows the A-A sectional view of the air conditioner in Fig. 1;

3 shows a schematic structural diagram of an evaporator in an air conditioner according to an embodiment of the present invention;

FIG. 4 shows a schematic diagram of an air flow direction of an air conditioner according to an embodiment of the present invention;

FIG. 5 shows a schematic flowchart of a cleaning control method according to an embodiment of the present invention.

Wherein, the corresponding relationship between the reference numerals and the component names in Fig. 1 to Fig. 4 is:

1 temperature and humidity sensor, 2 air conditioner housing, 3 first fan assembly, 301 upper second fan, 302 upper second fan blade, 303 upper first fan blade, 304 upper first fan, 4 second fan assembly, 401 Lower second fan, 402 lower second fan blade, 403 lower first stage fan blade, 404 lower first fan, 502 first evaporation module, 504 second evaporation module, 6 air inlet, 506 first electronic expansion valve, 508 first Two electronic expansion valves.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other in the case of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. Example limitations.

Example 1

As shown in FIG. 2 , an air conditioner according to an embodiment of the present invention includes: an air conditioner casing 2, on which an air inlet 6 and a plurality of air outlets are correspondingly opened; a plurality of fan assemblies, It is arranged close to the plurality of air outlets, including a first fan assembly and a second fan assembly; the evaporator, disposed close to the air inlet 6, includes a first evaporation module 502 and a second evaporation module 504 arranged side by side from top to bottom , the first evaporation module 502 is set corresponding to the first fan assembly, and the second evaporation module 504 is set corresponding to the second fan assembly, wherein, during the operation of the air conditioner, the reduction of The refrigerant flow and/or control of the first evaporation module 502 reduces the rotational speed of the first fan assembly, so that the airflow entering the air conditioner housing 2 is frosted after heat exchange with the first heat exchange module, Control to increase the refrigerant flow of the first evaporation module 502 and/or control to increase the rotational speed of the first fan assembly to defrost, so as to generate condensed liquid for cleaning the evaporator.

In this embodiment, an air inlet 6 is opened on the rear panel of the air conditioner housing 2, a plurality of air outlets are opened longitudinally on the front panel, and an evaporator and a plurality of air outlets are arranged in sequence between the air inlet 6 and the air outlet. A set of fan assemblies, wherein multiple sets of fan assemblies and multiple air outlets are correspondingly arranged one by one, so as to be driven by the fan assemblies to discharge air from the corresponding air outlets, the evaporator includes multiple heat exchange modules, and the multiple heat exchange modules are in turn connected with multiple sets of air outlets. The fan assemblies are arranged correspondingly one by one to form multiple sets of matching modules of heat exchange module-fan assembly-air outlet, so as to realize multiple parallel air outlet air ducts. Further, by setting the refrigerant input branch of the first heat exchange module The expansion valve is used to adjust the evaporation pressure of the first heat exchange module by adjusting the opening of the expansion valve, so as to realize the liquefaction of the airflow passing through the first heat exchange module through heat exchange, and the liquefied liquid flows downward through the outer surface of the evaporator. During the process, the dirt on the surface of the evaporator can be washed away, thereby realizing the cleaning of the evaporator.

In addition, through the arrangement of multiple parallel air outlet air ducts, the uppermost air outlet air duct will export the remaining part of the airflow after heat exchange with the first heat exchange module, and the other air outlet air ducts can normally perform cooling and air outlet, thereby Simultaneous execution of cooling and cleaning can be achieved, and through the arrangement of multiple air outlets, the air volume can be increased relative to one air outlet. Compared with the air conditioner with only one air outlet, the cooling operation will not be affected by the execution of the cleaning operation. Effect.

In addition, each group of fan components adopts at least one axial flow fan structure. Compared with perfusion fans or centrifugal fans, axial flow fans can increase the air supply distance while reducing operating noise. The evaporator cooperates with the air outlet to achieve straight air outlet, which is also conducive to improving the circulation efficiency of the air flow.

Preferably, FIG. 1 shows a vertical air conditioner.

As shown in FIG. 3 , in the above embodiment, optionally, it further includes: a controller (not shown in the figure), which is electrically connected to the plurality of fan assemblies respectively; A first electronic expansion valve 506 is provided on the input flow path, and a second electronic expansion valve 508 is provided on the input flow path of the second evaporation module 504. The first electronic expansion valve 506 and the second electronic expansion valve 508 are respectively It is electrically connected with the controller, wherein the controller controls to reduce the opening degree of the first electronic expansion valve 506 and/or increase the opening degree of the second electronic expansion valve 508 to reduce the The refrigerant flow rate of the first evaporation module 502 is to make the surface of the first evaporation module 502 frost.

In any of the above embodiments, optionally, the controller is further configured to: after the surface of the evaporator is frosted, detect the tube temperature of the first evaporation module through the evaporator temperature sensing package, if all The tube temperature of the first evaporation module rises to a preset tube temperature threshold, and the opening degree of the first electronic expansion valve is controlled to increase, so as to form liquid through the defrosting operation.

In this embodiment, the evaporator is divided into at least two evaporation modules that independently control the input of the refrigerant to form a plurality of independent refrigerant control flow paths. The electronic expansion valves have different opening degrees, and the corresponding evaporation modules have different evaporation pressures. The first evaporation module 502 in the upper part has a smaller evaporation pressure. With the lower rotation speed of the corresponding first fan assembly, it can Frosting is realized on the surface of the evaporation module, and the surface defrosting is further realized by increasing the opening degree, and the liquid obtained by defrosting flows through the surface of the evaporator to realize the cleaning effect of the evaporator.

Before the cleaning operation is performed, the first electronic expansion valve 506 on the first evaporation module 502 and the second electronic expansion valve 508 on the second evaporation module 504 have the same opening. On the premise that the frequency remains unchanged, by reducing the opening degree of the first electronic expansion valve 506 or increasing the opening degree of the second electronic expansion valve 508, the evaporation pressure of the first evaporation module 502 is reduced to realize heat exchange and frost formation.

Or by reducing the rotational speed of the first fan assembly or controlling the first fan assembly to stop running, frost formation on the surface of the first evaporation module 502 can also be achieved.

The multiple air outlets include the upper air outlet and the lower air outlet. The upper air outlet is used to export the air after cleaning and heat exchange, and the lower air outlet is used for cooling air supply. The fan runs at a lower speed, and the fan corresponding to the lower air outlet is controlled to run at a higher speed, that is, the air supply speed of the upper air outlet is less than that of the lower air outlet. Correspondingly, a counter-cyclone fan is set up, and an axial flow fan is correspondingly set at the upper air outlet. It is also possible to set a counter-cyclone fan at the lower air outlet and the upper air outlet, but the counter-cyclone fan that controls the upper air outlet runs at a lower gear, so that Through the opening of the upper air outlet and the lower air outlet, the corresponding fan components, and the first heat exchange module and the lower heat exchange module provided with the expansion valve, the synchronous control execution of the cleaning of the evaporator and the cooling of the indoor unit can be realized, so as to improve the performance. User experience comfort.

In any of the above embodiments, optionally, the plurality of air outlets include an upper air outlet and a lower air outlet, the first fan assembly is correspondingly disposed on the upper air outlet, and the second fan assembly corresponds to It is arranged at the lower air outlet; the controller is further configured to: in the process of cleaning the evaporator, control the outlet wind speed of the first fan assembly to be lower than the wind speed of the second fan assembly to run through the first fan assembly. The second fan assembly performs cooling and air supply.

In this embodiment, when the cleaning operation of the evaporator is performed, by controlling the first fan assembly to operate at a smaller outlet wind speed, and controlling the second fan assembly to operate at a larger outlet wind speed, the first evaporation module is 502 fully exchanges heat with the surface air flow, and ensures that the second evaporating module 504 and the corresponding second fan assembly normally perform the cooling operation, so as to realize the cleaning function of the evaporator without affecting the cooling function of the air conditioner itself. While meeting the needs of users, it is beneficial to improve the service life of the air conditioner.

In any of the above embodiments, optionally, the first fan assembly is formed by a first fan and a second fan that rotate in opposite directions, and the first fan and the second fan are axial flow fans or inclined fans. A flow fan, the first fan is arranged close to the evaporator, and the second fan is arranged close to the air outlet; the second fan assembly is a single axial flow fan, diagonal flow fan, cross flow fan or centrifugal fan any of the .

In any of the above embodiments, optionally, the controller is further configured to: control and adjust the rotational speed of the first fan to be greater than or equal to the rotational speed of the second fan, and the rotational speed of the first fan is the same as the rotational speed of the second fan. A rotational speed difference between rotational speeds of the second fan is less than or equal to a rotational speed difference threshold, wherein the rotational speed difference threshold is determined according to size parameters of the first fan and size parameters of the second fan.

In this embodiment, the counter-cyclone fan includes at least a first fan and a second fan arranged side by side in the axial direction. After the air flow after heat exchange is pressurized by the first fan, it is driven by the second fan from the corresponding fan. The air outlet is discharged, combined with the limitation of the fan speed of the first fan and the fan speed of the second fan and the relative relationship between the two, so as to realize the narrow-angle air supply, that is, a smaller air outlet range is formed after passing through the air outlet. However, it has a long air supply distance, thereby accelerating the indoor air circulation, thereby ensuring the cleaning effect and improving the indoor temperature drop efficiency.

Specifically, the first fan assembly installed with the upper air outlet may include a first fan and a second fan arranged in opposite directions, the first fan is used to increase the wind pressure, and the second fan plays the role of gathering wind. Therefore, the first fan The fan and the second fan work together to expand the blowing distance to achieve narrow-angle air supply, that is, to increase the air supply distance and to accelerate indoor air circulation.

In any of the above embodiments, optionally, it further includes: a temperature and humidity sensor 1, which is electrically connected to the controller, and the temperature and humidity sensor 1 is used to collect ambient temperature and ambient humidity, wherein, if the The controller detects that the ambient temperature is greater than the preset temperature threshold and the ambient humidity is greater than the first ambient humidity threshold, and adjusts the opening of the first electronic expansion valve 506 and/or the wind speed of the first fan assembly , to start the cleaning operation, if the controller detects that the ambient humidity drops below a second ambient humidity threshold, the controller ends the cleaning operation, and the first ambient humidity threshold is greater than the second ambient humidity threshold.

In this embodiment, when the controller and the temperature and humidity sensor 1 are mounted on the air conditioner, it is detected that the indoor ambient humidity reaches S1 (the first humidity threshold) or higher, and the indoor ambient temperature reaches T1 (the first temperature). When the threshold value) is above, it will automatically enter the cleaning mode. In this mode, by adjusting the compressor frequency, the opening of the electronic expansion valve and the rotational speed of the axial flow fan, the comfortable dehumidification function is realized, and the indoor ambient humidity is as low as S2 ( When the second humidity threshold), the cleaning mode is automatically exited, and the dehumidification operation is automatically performed by monitoring the ambient temperature and humidity, which simplifies the user's operation steps.

In any of the above embodiments, optionally, it further includes: a compressor, which is electrically connected to the controller, and is connected to the evaporator through a refrigerant flow path through a refrigerant input pipe and a refrigerant output pipe, wherein , the controller is further configured to: adjust the opening of the first electronic expansion valve 506 according to the pipe temperature of the first evaporation module 502, the return air temperature of the air inlet and the operating frequency of the compressor, and/ Or adjust the opening of the second electronic expansion valve 508 according to the pipe temperature of the second evaporation module 504, the return air temperature of the air inlet, and the operating frequency of the compressor.

In this embodiment, the electronic expansion valve is opened by combining with one or more of the detected evaporator temperature bulb temperature and other such as exhaust gas bulb temperature, indoor return air temperature, compressor operating frequency, etc. The temperature can be adjusted separately to achieve different condensing temperature settings, control the air outlet temperature of each air outlet separately, and realize the clean air outlet through the upper air outlet and the normal cooling air outlet through the second air outlet at the lower part.

As shown in FIG. 2 , the first fan assembly and the second fan assembly can also be axial flow fans. The first fan assembly 3 and the second fan assembly 4 are both configured to form a counter-cyclone fan. The first fan assembly 3 includes an upper first fan assembly. The fan and the upper second fan. The upper first fan includes the upper primary fan blade 303 and the upper first fan 304 , and the upper second fan includes the upper secondary fan blade 302 and the upper second fan 301 .

The second fan assembly 4 includes a lower first fan and a lower second fan, the lower first fan includes a lower primary fan 403 and a lower first fan 404, and the lower second fan includes a lower secondary fan 402 and a lower second fan 401.

Embodiment 2

As shown in FIG. 5 , the cleaning control method according to the embodiment of the present invention, applicable to the air conditioner described in the above embodiment, includes:

Step 602, if it is detected that the cleaning mode is entered, control to reduce the refrigerant flow rate of the first evaporation module and/or control to reduce the rotational speed of the first fan assembly to form frost on the first heat exchange module ;

Step 604 , after the frost is formed, control to increase the refrigerant flow of the first evaporation module and/or control to increase the rotational speed of the first fan assembly to defrost, so as to generate condensed liquid for cleaning the evaporator.

In this technical solution, the evaporator is divided into at least two evaporation modules that independently control the input of the refrigerant to form a plurality of independent refrigerant control flow paths. The electronic expansion valve has different opening degrees, and the corresponding evaporation modules have different evaporation pressures. The first evaporation module in the upper part has a smaller evaporation pressure. With the lower speed of the corresponding first fan assembly, it can achieve The surface of the evaporation module is frosted, and by increasing the opening, the surface is further defrosted, and the liquid obtained by defrosting flows through the surface of the evaporator to achieve the cleaning effect of the evaporator.

Before the cleaning operation is performed, the first electronic expansion valve on the first evaporation module and the second electronic expansion valve on the second evaporation module have the same opening degree. When the cleaning operation is performed, the operating frequency of the compressor is not changed. Under the premise, by reducing the opening degree of the first electronic expansion valve, or increasing the opening degree of the second electronic expansion valve, the evaporation pressure of the first evaporation module is reduced, and the heat exchange frosting is realized.

Or by reducing the rotational speed of the first fan assembly or controlling the first fan assembly to stop running, frost formation on the surface of the first evaporation module can also be achieved.

In the above embodiment, optionally, the first evaporation module is provided with a first electronic expansion valve for controlling the flow of refrigerant, and the second evaporation module is provided with a second electronic expansion valve. The cleaning control method is specifically The method includes: after entering the cleaning mode, controlling to reduce the opening of the first electronic expansion valve to reduce the refrigerant flow of the first evaporation module and to reduce the evaporation pressure of the first heat exchange module , frost is formed on the first heat exchange module; if it is detected that the tube temperature of the first evaporation module rises to a preset tube temperature threshold, the opening degree of the first electronic expansion valve is controlled to increase, so as to pass the melting Frost forms the liquid.

In this embodiment, a temperature sensing bulb is set on the U-shaped tube of the first heat exchange module, and the temperature change of the U-shaped tube is monitored by the temperature sensing bulb, and the state of the airflow passing through the first heat exchange module is gaseous-solid- In the liquid state, by increasing the opening of the expansion valve, the tube temperature of the upper evaporation module drops rapidly, so that frost forms when the airflow flows through the upper evaporation module, and the tube temperature rises as the upper evaporation module absorbs heat gradually. When the tube temperature rises to be greater than or equal to the preset tube temperature threshold, the control increases the opening of the expansion valve again to achieve frost holding, thereby forming liquid, and the liquid flows down the evaporator to achieve the cleaning of the evaporator. Combined with the cooling air supply from the lower air outlet, the cooling function and the self-cleaning function can be executed in parallel without interfering with each other, which increases the comfort of the air conditioner.

In any of the above embodiments, optionally, the method further includes: according to the pipe temperature of the first evaporation module, the exhaust temperature of the compressor, the return air temperature of the air inlet, and the temperature of the compressor At least one of the operating frequencies determines an opening degree adjustment parameter of the first electronic expansion valve, so as to adjust the opening degree according to the opening degree adjustment parameter, and frost is formed on the first heat exchange module.

In this embodiment, since the control of the expansion valve is related to the operating frequency of the compressor, the discharge temperature of the compressor, the return air temperature of the indoor unit, and the induction temperature of the evaporator, etc., it needs to be based on at least one of the above parameters. This is to determine the opening adjustment coefficient, that is, how to adjust the opening of the expansion valve. For example, when the operating frequency of the compressor is high, the opening of the expansion valve needs to be increased by a large amount, and when the operating frequency is low, only the A small increase, such as when the return air temperature is high, indicates that the temperature of the airflow entering the air inlet is high. At this time, a small opening degree of the muscle can be increased, and the corresponding evaporative pressure can be set for different functions to achieve Simultaneous realization of cooling and dehumidification functions.

In any one of the above embodiments, optionally, the plurality of air outlets include an upper air outlet corresponding to the first fan assembly, and after entering the cleaning mode, the first air outlet is controlled to decrease the first air outlet. The opening degree of the electronic expansion valve is to reduce the refrigerant flow of the first evaporation module, so that the evaporation pressure of the first heat exchange module is reduced, and frost is formed on the first heat exchange module, further comprising: After controlling to reduce the opening degree of the first electronic expansion valve, the operating gear of the first fan assembly corresponding to the upper air outlet is determined according to the relationship between the ambient temperature and the second temperature threshold.

In this embodiment, in the process of controlling the first increase of the opening degree of the expansion valve, the operating gear of the first fan assembly corresponding to the upper air outlet is determined by detecting the relationship between the ambient temperature and the second temperature threshold, Therefore, the air can be discharged in combination with the actual ambient temperature, so as to realize the cleaning function of the evaporator through the circulation of the air flow cleaned by the user.

In any of the above embodiments, optionally, the operating gears include a high wind gear, a mid-high wind gear, a medium wind gear, a medium-low wind gear, and a low wind gear, and are determined according to the relationship between the ambient temperature and the second temperature threshold The operating gear of the first fan assembly corresponding to the upper air outlet specifically includes: when it is detected that the ambient temperature is less than or equal to the second temperature threshold, controlling the first fan assembly to run at a rotational speed corresponding to a low wind gear; When the ambient temperature is greater than the second temperature threshold, the first fan assembly is controlled to operate at a rotational speed corresponding to a medium-low wind speed.

In this embodiment, according to the actual operating requirements of the fan assembly, the operating gears can be divided into five gears, which specifically include high wind gear, medium-high wind gear, medium wind gear, medium-low wind gear, and low wind gear. In order to improve the frosting efficiency of the airflow of the heat exchange module, the corresponding first fan assembly needs to operate at a lower speed (such as low-medium wind gear and low wind gear), combined with the preset second temperature threshold, to determine according to When the ambient temperature is detected to be greater than the second temperature threshold, it indicates that the current ambient temperature is relatively high. At this time, by using the medium and low wind gear operation, while ensuring sufficient frost, there are also It is beneficial to improve the indoor cooling effect. When it is detected that the ambient temperature is less than or equal to the second temperature threshold, it indicates that the current ambient temperature is low, and the operating gear is lowered to ensure the efficiency of frosting.

Specifically, the low wind speed of the counter-rotating fan is: 150 rpm for the first fan and 100 rpm for the second fan;

The rotation speed of the medium and low wind gear of the counter-rotating fan is: the first fan is 250 rpm, and the second fan is 200 rpm;

The rotation speed of the mid-wind gear of the counter-rotating fan is: the first fan is 350 rpm, and the second fan is 300 rpm;

The rotating speed of the middle and high wind gear of the counter-rotating fan is: the first fan is 450 rpm, and the second fan is 400 rpm;

The high wind speed of the counter-rotating fan is: the first fan is 550 rpm, and the second fan is 500 rpm;

Wherein, the rotation speed of the first fan is greater than or equal to the rotation speed of the second fan.

In any of the above embodiments, optionally, if it is detected that the tube temperature of the first evaporation module rises to a preset tube temperature threshold, the opening degree of the first electronic expansion valve is controlled to increase, so as to The liquid is formed by defrosting, further comprising: after controlling to increase the opening degree of the first electronic expansion valve, controlling to increase the operating gear of the first fan assembly to defrost.

In this embodiment, after the opening of the expansion valve is controlled to be increased again, the heat exchange efficiency between the airflow and the frosting is improved by increasing the operating gear of the first fan assembly, so as to improve the flow rate and flow of the liquid, so that the Be sure to have enough liquid for cleaning the evaporator.

In any of the above embodiments, optionally, the plurality of air outlets further include a lower air outlet corresponding to the second fan assembly, and the cleaning control method further includes: after entering the cleaning mode, controlling all the air outlets. The second fan assembly performs cooling and air supply through the lower air outlet, wherein the operating gear of the second fan assembly is higher than the operating gear of the first fan assembly.

In this embodiment, when each group of fan assemblies includes two axial flow fans, the two axial flow fans can be configured to form a counter-cyclone fan by being oppositely arranged. At the same time, it can improve the ventilation effect.

Specifically, the plurality of air outlets include an upper air outlet and a lower air outlet, the upper air outlet is used to export the air after cleaning and heat exchange, and the lower air outlet is used for cooling and supplying air. The fan corresponding to the air outlet runs at a lower speed, and the fan corresponding to the lower air outlet is controlled to run at a higher speed, that is, the air supply speed of the upper air outlet is lower than that of the lower air outlet. A counter-cyclone fan is set corresponding to the lower air outlet, and an axial flow fan is correspondingly set at the upper air outlet. It is also possible to set a counter-cyclone fan at the lower air outlet and the upper air outlet, but the counter-cyclone fan that controls the upper air outlet is in a lower gear. Operation, so that the cleaning of the evaporator and the cooling of the indoor unit can be realized through the opening of the upper air outlet and the lower air outlet, the matching corresponding fan components, and the first heat exchange module and the lower heat exchange module provided with the expansion valve. , in order to improve the comfort of the user experience.

In any of the above embodiments, optionally, the counter-cyclone fan includes a first fan disposed close to the air inlet and a second fan disposed close to the air outlet, and the cleaning control method further includes: controlling the first fan to run at a first rotational speed and the second fan runs at a second rotation speed, so that the narrow-angle air supply is performed, wherein the first rotation speed and the second rotation speed are determined according to the body size of the air conditioner, the number of blades of the first fan and the second fan, and the first rotation speed and the second rotation speed are determined according to the air conditioner. The difference between the rotational speed and the second rotational speed is less than the specified speed difference threshold.

In this embodiment, the counter-cyclone fan includes at least a first fan and a second fan arranged side by side in the axial direction. After the air flow after heat exchange is pressurized by the first fan, it is driven by the second fan from the corresponding fan. The air outlet is discharged, combined with the limitation of the fan speed of the first fan and the fan speed of the second fan and the relative relationship between the two, so as to realize the narrow-angle air supply, that is, a smaller air outlet range is formed after passing through the air outlet. However, it has a long air supply distance, thereby accelerating the indoor air circulation, thereby ensuring the cleaning effect and improving the indoor temperature drop efficiency.

In any of the above embodiments, optionally, it further includes: determining the operating gear of the second fan assembly corresponding to the lower air outlet according to the difference between the ambient temperature and the target temperature, wherein the second fan assembly The operating gears include high wind gear, medium high wind gear and mid wind gear.

In this embodiment, in order to ensure that the air duct corresponding to the upper air outlet and the air duct corresponding to the lower air outlet perform air flow circulation independently of each other, the upper air outlet and the lower air outlet are controlled to discharge air at different wind speeds, and since the lower air outlet The wind is responsible for cooling, so a higher wind speed is required. Therefore, when the first fan assembly above operates in a medium-low wind gear or a low wind gear, the second fan assembly is controlled to use one of the high wind gear, medium-high wind gear or medium wind gear. This kind of operation to ensure the cooling effect.

In any of the above embodiments, optionally, before entering the cleaning mode, the method further includes: when it is detected that the current ambient temperature is greater than the first temperature threshold and the current ambient humidity is greater than the preset first humidity threshold , to control the air conditioner to enter the cleaning mode.

In any of the above embodiments, optionally, after entering the cleaning mode, the method further includes: when it is detected that the ambient humidity is less than the second humidity threshold, controlling the air conditioner to exit the cleaning mode; after exiting the cleaning mode, the air conditioner The appliance stops running, or all the air outlets perform cooling and air supply, wherein the second humidity threshold is smaller than the first humidity threshold.

In this embodiment, when the air conditioner is equipped with a controller and a temperature and humidity sensor, it is detected that the indoor ambient humidity reaches S1 (the first humidity threshold) or higher, and the indoor ambient temperature reaches T1 (the first temperature threshold) at the same time. ) or above, the automatic control enters the cleaning mode. In this mode, the comfortable dehumidification function is realized by adjusting the compressor frequency, the opening degree of the electronic expansion valve and the rotational speed of the axial flow fan, and the indoor ambient humidity is as low as S2 (No. 2 humidity threshold), it automatically exits the cleaning mode, and automatically dehumidifies the operation by monitoring the ambient temperature and humidity, which simplifies the user's operation steps.

In any of the foregoing embodiments, optionally, before entering the cleaning mode, the method further includes: controlling the air conditioner to enter the cleaning mode under the condition that a cleaning instruction sent by the remote control device is detected.

In this embodiment, whether to enter the cleaning mode can also be determined through the received control signal, so as to realize the comfortable dehumidification function based on user control, which has higher control flexibility than the control scheme of automatically entering the cleaning mode.

In any of the above embodiments, optionally, it further includes: determining the operating gear of the second fan assembly corresponding to the lower air outlet according to the difference between the ambient temperature and the target temperature, wherein the second fan assembly The operating gears include high wind gear, medium high wind gear and mid wind gear.

In this embodiment, in order to ensure that the air duct corresponding to the upper air outlet and the air duct corresponding to the lower air outlet perform air flow circulation independently of each other, the upper air outlet and the lower air outlet are controlled to discharge air at different wind speeds, and since the lower air outlet The wind is responsible for cooling, so a higher wind speed is required. Therefore, when the first fan assembly above operates in a medium-low wind gear or a low wind gear, the second fan assembly is controlled to use one of the high wind gear, medium-high wind gear or medium wind gear. This kind of operation to ensure the cooling effect.

In any of the above embodiments, optionally, before entering the cleaning mode, the method further includes: when it is detected that the current ambient temperature is greater than the first temperature threshold and the current ambient humidity is greater than the preset first humidity threshold , to control the air conditioner to enter the cleaning mode.

In any of the above embodiments, optionally, after entering the cleaning mode, the method further includes: when it is detected that the ambient humidity is less than the second humidity threshold, controlling the air conditioner to exit the cleaning mode; after exiting the cleaning mode, the air conditioner The appliance stops running, or all the air outlets perform cooling and air supply, wherein the second humidity threshold is smaller than the first humidity threshold.

In this embodiment, when the air conditioner is equipped with a controller and a temperature and humidity sensor, it is detected that the indoor ambient humidity reaches S1 (the first humidity threshold) or higher, and the indoor ambient temperature reaches T1 (the first temperature threshold) at the same time. ) or above, the automatic control enters the cleaning mode. In this mode, the comfortable dehumidification function is realized by adjusting the compressor frequency, the opening degree of the electronic expansion valve and the rotational speed of the axial flow fan, and the indoor ambient humidity is as low as S2 (No. 2 humidity threshold), it automatically exits the cleaning mode, and automatically dehumidifies the operation by monitoring the ambient temperature and humidity, which simplifies the user's operation steps.

In any of the foregoing embodiments, optionally, before entering the cleaning mode, the method further includes: controlling the air conditioner to enter the cleaning mode under the condition that a cleaning instruction sent by the remote control device is detected.

In this embodiment, whether to enter the cleaning mode can also be determined through the received control signal, so as to realize the comfortable dehumidification function based on user control, which has higher control flexibility than the control scheme of automatically entering the cleaning mode.

Embodiment three:

The following takes the method of using a remote control device to send a remote control command to control the air conditioner to enter the cleaning mode as an example, and further describes the cleaning control scheme with reference to FIG. 3 and FIG. 4 .

After the air conditioner is turned on, it sends a cleaning command to the air conditioner by touching the self-cleaning button on the remote control device. The cleaning command includes the target temperature of cooling and the adjustment parameters of the opening degree of the expansion valve. Self-cleaning function.

Specifically, for example, the operating gears are divided into 5 gears, including high wind gear, mid-high wind gear, mid-wind gear, medium-low wind gear, and low wind gear. After entering the cleaning mode, the running gear can be adjusted to realize the adjustment of the rotational speed of the cyclone, and the air supply distance can be increased to speed up the indoor air circulation, enhance the self-cleaning effect and the speed of indoor temperature drop, so as to achieve a more comfortable state. The rotational speed of the machine includes:

The low-speed speed of the counter-rotating fan is: the first fan is 150 rpm, and the second fan is 100 rpm;

The rotation speed of the medium and low wind gear of the counter-rotating fan is: the first fan is 250 rpm, and the second fan is 200 rpm;

The rotation speed of the mid-wind gear of the counter-rotating fan is: the first fan is 350 rpm, and the second fan is 300 rpm;

The rotating speed of the middle and high wind gear of the counter-rotating fan is: the first fan is 450 rpm, and the second fan is 400 rpm;

The high wind speed of the counter-rotating fan is: the first fan is 550 rpm, and the second fan is 500 rpm;

Wherein, the rotation speed of the first fan is greater than or equal to the rotation speed of the second fan.

As shown in Figure 4, the air duct passing through the upper air outlet realizes cleaning, and the air duct passing through the lower air outlet realizes cooling.

Wherein, according to at least one of the detected induction temperature of the evaporator, the exhaust induction temperature of the compressor, the return air temperature of the indoor unit, and the operating frequency of the compressor, the opening degrees of the expansion valves are adjusted respectively to control the The outlet air temperature of each air outlet realizes self-cleaning of the upper air outlet and cooling of the lower air outlet.

Specifically, the logic of realizing the cleaning mode through the air outlet from the upper air outlet includes: after entering the cleaning mode, the gear position of the first fan assembly of the upper air outlet is automatically selected, and the gear position selection is determined according to the ambient temperature. When the indoor temperature is greater than T2 , the default medium and low wind gear, when the indoor temperature is less than T2, the default low wind gear, at the same time the first electronic expansion valve 506 moves quickly, so that the tube temperature of the first evaporation module drops rapidly, as shown in Figure 3, let the first evaporation module Frost, when the tube temperature of the first evaporation module is greater than Tz, the first electronic expansion valve will act again, the opening degree will be increased, and the gear position of the first fan assembly of the upper air outlet will increase to realize the defrosting and melt water. , flows down the upper part of the evaporator, and then cleans the entire evaporator.

Embodiment 4:

The following takes the method of determining whether to enter the cleaning mode according to the detection results of the ambient temperature and ambient humidity by the temperature and humidity sensor as an example, and further describes the cleaning control scheme with reference to FIG. 4 .

When it is detected that the current ambient temperature is greater than the first temperature threshold and the current ambient humidity is greater than the preset first humidity threshold, the air conditioner is controlled to enter the cleaning mode.

Specifically, for example, the operating gears are divided into 5 gears, including high wind gear, mid-high wind gear, mid-wind gear, medium-low wind gear, and low wind gear. After entering the cleaning mode, the running gear can be adjusted to realize the adjustment of the rotational speed of the cyclone, and the air supply distance can be increased to speed up the indoor air circulation, enhance the self-cleaning effect and the speed of indoor temperature drop, so as to achieve a more comfortable state. The rotational speed of the machine includes:

The low-speed speed of the counter-rotating fan is: the first fan is 150 rpm, and the second fan is 100 rpm;

The rotation speed of the medium and low wind gear of the counter-rotating fan is: the first fan is 250 rpm, and the second fan is 200 rpm;

The rotation speed of the mid-wind gear of the counter-rotating fan is: the first fan is 350 rpm, and the second fan is 300 rpm;

The rotating speed of the middle and high wind gear of the counter-rotating fan is: the first fan is 450 rpm, and the second fan is 400 rpm;

The high wind speed of the counter-rotating fan is: the first fan is 550 rpm, and the second fan is 500 rpm;

Wherein, the rotation speed of the first fan is greater than or equal to the rotation speed of the second fan.

As shown in Figure 4, the air duct passing through the upper air outlet realizes cleaning, and the air duct passing through the lower air outlet realizes cooling.

Wherein, according to at least one of the detected induction temperature of the evaporator, the exhaust induction temperature of the compressor, the return air temperature of the indoor unit, and the operating frequency of the compressor, the opening degrees of the expansion valves are adjusted respectively to control the The outlet air temperature of each air outlet realizes self-cleaning of the upper air outlet and cooling of the lower air outlet.

Specifically, the logic of realizing the cleaning mode through the air outlet from the upper air outlet includes: after entering the cleaning mode, the gear position of the first fan assembly of the upper air outlet is automatically selected, and the gear position selection is determined according to the ambient temperature. When the indoor temperature is greater than T2 , the default medium and low wind gear, when the indoor temperature is less than T2, the default low wind gear; at the same time, the electronic first electronic expansion valve 506 moves quickly, so that the tube temperature of the first evaporation module drops rapidly, and the first evaporation module is frosted. When the tube temperature of an evaporation module is greater than Tz, the electronic first electronic expansion valve 506 is activated, the opening degree is increased, and the gear position of the first fan assembly of the upper air outlet is increased, so as to realize the defrosting, and the melted water flows along the evaporator. The upper part flows down, thereby cleaning the entire evaporator.

A computer-readable storage medium according to an embodiment of the present invention has a computer program stored thereon, and when the computer program is executed, realizes: if it is detected that the cleaning mode is entered, adjust the evaporation of a first heat exchange module among the plurality of heat exchange modules pressure, so that the airflow entering the air conditioner housing exchanges heat with the first heat exchange module and is converted into liquid, so as to clean the evaporator through the liquid.

In this embodiment, an air inlet is provided on the rear panel of the air conditioner housing, a plurality of air outlets are provided in the longitudinal direction on the front panel, and an evaporator and multiple sets of fan assemblies are arranged between the air inlet and the air outlet in sequence. , wherein, multiple sets of fan assemblies and multiple air outlets are correspondingly arranged one by one, so as to be driven by the fan assemblies to discharge air from the corresponding air outlets, the evaporator includes multiple heat exchange modules, and the multiple heat exchange modules are connected with the multiple sets of fan assemblies one by one. Corresponding settings are formed to form multiple sets of matching modules of heat exchange module-fan assembly-air outlet, so as to realize multiple parallel air outlet air ducts. Further, by setting expansion valves on the refrigerant input branch of the first heat exchange module, By adjusting the opening degree of the expansion valve, the evaporation pressure of the first heat exchange module is adjusted, so that the airflow passing through the first heat exchange module is liquefied by heat exchange, and the liquefied liquid flows downward through the outer surface of the evaporator. , can wash away the dirt on the surface of the evaporator, and then realize the cleaning of the evaporator.

In the above-mentioned embodiment, optionally, the first heat exchange module is correspondingly provided with an expansion valve to adjust the evaporation pressure of the first heat exchange module in the plurality of heat exchange modules, which specifically includes: after entering the cleaning mode, controlling to increase the expansion The opening degree of the valve, so that the evaporation pressure of the first heat exchange module is reduced, and frost forms on the first heat exchange module; when it is detected that the tube temperature rises to the preset tube temperature threshold, continue to increase the opening of the expansion valve. degrees to form a liquid by defrosting.

In this embodiment, a temperature sensing bulb is set on the U-shaped tube of the first heat exchange module, and the temperature change of the U-shaped tube is monitored by the temperature sensing bulb, and the state of the airflow passing through the first heat exchange module is gaseous-solid- In the liquid state, by increasing the opening of the expansion valve, the tube temperature of the upper evaporation module drops rapidly, so that frost forms when the airflow flows through the upper evaporation module, and the tube temperature rises as the upper evaporation module absorbs heat gradually. When the tube temperature rises to be greater than or equal to the preset tube temperature threshold, the control increases the opening of the expansion valve again to achieve frost holding, thereby forming liquid, and the liquid flows down the evaporator to achieve the cleaning of the evaporator. Combined with the cooling air supply from the lower air outlet, the cooling function and the self-cleaning function can be executed in parallel without interfering with each other, which increases the comfort of the air conditioner.

In any of the above embodiments, optionally, it further includes: determining at least one of the induction temperature of the evaporator, the exhaust temperature of the compressor, the return air temperature of the indoor unit, and the operating frequency of the compressor. An opening degree adjustment parameter of an expansion valve to adjust the opening degree according to the opening degree adjustment parameter.

In this embodiment, since the control of the expansion valve is related to the operating frequency of the compressor, the discharge temperature of the compressor, the return air temperature of the indoor unit, and the induction temperature of the evaporator, etc., it needs to be based on at least one of the above parameters. This is to determine the opening adjustment coefficient, that is, how to adjust the opening of the expansion valve. For example, when the operating frequency of the compressor is high, the opening of the expansion valve needs to be increased by a large amount, and when the operating frequency is low, only the A small increase, such as when the return air temperature is high, indicates that the temperature of the airflow entering the air inlet is high. At this time, a small opening degree of the muscle can be increased, and the corresponding evaporative pressure can be set for different functions to achieve Simultaneous realization of cooling and cleaning functions.

In any of the above embodiments, optionally, the plurality of air outlets includes an upper air outlet corresponding to the first heat exchange module, and the air conditioner includes a plurality of fan assemblies corresponding to the plurality of air outlets. When entering the cleaning mode Then, the opening degree of the expansion valve is controlled to increase, so that the evaporation pressure of the first heat exchange module is reduced, and frost is formed on the first heat exchange module. The relationship between the second temperature thresholds determines the operating gear of the first fan assembly corresponding to the upper air outlet.

In this embodiment, in the process of controlling the first increase of the opening degree of the expansion valve, the operating gear of the first fan assembly corresponding to the upper air outlet is determined by detecting the relationship between the ambient temperature and the second temperature threshold, Therefore, the air can be discharged in combination with the actual ambient temperature, so as to realize the cleaning function of the evaporator through the circulation of the air flow cleaned by the user.

In any of the above embodiments, optionally, the operating gears include a high wind gear, a mid-high wind gear, a medium wind gear, a medium-low wind gear, and a low wind gear, and are determined according to the relationship between the ambient temperature and the second temperature threshold The operating gear of the first fan assembly corresponding to the upper air outlet specifically includes: when it is detected that the ambient temperature is less than or equal to the second temperature threshold, controlling the first fan assembly to run at a rotational speed corresponding to a low wind gear; When the ambient temperature is greater than the second temperature threshold, the first fan assembly is controlled to operate at a rotational speed corresponding to a medium-low wind speed.

In this embodiment, according to the actual operating requirements of the fan assembly, the operating gears can be divided into five gears, which specifically include high wind gear, medium-high wind gear, medium wind gear, medium-low wind gear, and low wind gear. In order to improve the frosting efficiency of the airflow of the heat exchange module, the corresponding first fan assembly needs to operate at a lower speed (such as low-medium wind gear and low wind gear), combined with the preset second temperature threshold, to determine according to When the ambient temperature is detected to be greater than the second temperature threshold, it indicates that the current ambient temperature is relatively high. At this time, by using the medium and low wind gear operation, while ensuring sufficient frost, there are also It is beneficial to improve the indoor cooling effect. When it is detected that the ambient temperature is less than or equal to the second temperature threshold, it indicates that the current ambient temperature is low, and the operating gear is lowered to ensure the efficiency of frosting.

In any of the above embodiments, optionally, in the case of detecting that the pipe temperature rises to a preset pipe temperature threshold, continuing to increase the opening of the expansion valve to form liquid through defrosting, further comprising: continuing to increase After the opening of the expansion valve is controlled, the operating gear of the first fan assembly is controlled to be increased.

In this embodiment, after the opening of the expansion valve is controlled to be increased again, the heat exchange efficiency between the airflow and the frosting is improved by increasing the operating gear of the first fan assembly, so as to improve the flow rate and flow of the liquid, so that the Be sure to have enough liquid for cleaning the evaporator.

In any of the above embodiments, optionally, the plurality of air outlets further include a lower air outlet, and the lower air outlet is correspondingly provided with a second fan assembly, and the second fan assembly includes a counter-cyclone fan, or the first fan assembly and the second fan assembly are provided. Both of the two fan assemblies include a counter-cyclone fan, and the cleaning control method further includes: after entering the cleaning mode, controlling the counter-cyclone fan corresponding to the lower air outlet to perform narrow-angle air supply; or controlling the counter-cyclone fan corresponding to the lower air outlet, and The contra-cyclone corresponding to the upper air outlet synchronously performs narrow-angle air supply, wherein the lower air outlet is used for cooling air supply, and the air supply speed of the upper air outlet is lower than that of the lower air outlet.

In this embodiment, when each group of fan assemblies includes two axial flow fans, the two axial flow fans can be configured to form a counter-cyclone fan by being oppositely arranged. At the same time, it can improve the ventilation effect.

Specifically, the plurality of air outlets include an upper air outlet and a lower air outlet, the upper air outlet is used to export the air after cleaning and heat exchange, and the lower air outlet is used for cooling and supplying air. The fan corresponding to the air outlet runs at a lower speed, and the fan corresponding to the lower air outlet is controlled to run at a higher speed, that is, the air supply speed of the upper air outlet is lower than that of the lower air outlet. A counter-cyclone fan is set corresponding to the lower air outlet, and an axial flow fan is correspondingly set at the upper air outlet. It is also possible to set a counter-cyclone fan at the lower air outlet and the upper air outlet, but the counter-cyclone fan that controls the upper air outlet is in a lower gear. Operation, so that the cleaning of the evaporator and the cooling of the indoor unit can be realized through the opening of the upper air outlet and the lower air outlet, the matching corresponding fan components, and the first heat exchange module and the lower heat exchange module provided with the expansion valve. , in order to improve the comfort of the user experience.

In any of the above embodiments, optionally, the counter-cyclone fan includes a first fan disposed close to the air inlet and a second fan disposed close to the air outlet, and the cleaning control method further includes: controlling the first fan to run at a first rotational speed and the second fan runs at a second rotation speed, so that the narrow-angle air supply is performed, wherein the first rotation speed and the second rotation speed are determined according to the body size of the air conditioner, the number of blades of the first fan and the second fan, and the first rotation speed and the second rotation speed are determined according to the air conditioner. The difference between the rotational speed and the second rotational speed is less than the specified speed difference threshold.

In this embodiment, the counter-cyclone fan includes at least a first fan and a second fan arranged side by side in the axial direction. After the air flow after heat exchange is pressurized by the first fan, it is driven by the second fan from the corresponding fan. The air outlet is discharged, combined with the limitation of the fan speed of the first fan and the fan speed of the second fan and the relative relationship between the two, so as to realize the narrow-angle air supply, that is, a smaller air outlet range is formed after passing through the air outlet. However, it has a long air supply distance, thereby accelerating the indoor air circulation, thereby ensuring the cleaning effect and improving the indoor temperature drop efficiency.

Specifically, as a preferred embodiment, the air conditioner is provided with an upper air outlet and a lower air outlet, respectively, and the fan assemblies arranged on the upper air outlet and the lower air outlet are both counter-cyclone fans, and the upper air outlet is combined with the counter-cyclone fan and the first air outlet. A heat exchange module cooperates to liquefy the passing airflow and then cleans the evaporator. The lower air outlet is combined with a counter-cyclone and the lower heat exchange module cooperates to liquefy the passing airflow for cooling and air supply. Or run at medium and low wind gear, and the counter-cyclone corresponding to the lower air outlet adopts a designated one of medium wind gear, medium and high wind gear and high wind gear.

The low-speed speed of the counter-rotating fan is: the first fan is 150 rpm, and the second fan is 100 rpm;

The rotation speed of the medium and low wind gear of the counter-rotating fan is: the first fan is 250 rpm, and the second fan is 200 rpm;

The rotation speed of the mid-wind gear of the counter-rotating fan is: the first fan is 350 rpm, and the second fan is 300 rpm;

The rotating speed of the middle and high wind gear of the counter-rotating fan is: the first fan is 450 rpm, and the second fan is 400 rpm;

The high wind speed of the counter-rotating fan is: the first fan is 550 rpm, and the second fan is 500 rpm;

Wherein, the rotation speed of the first fan is greater than or equal to the rotation speed of the second fan.

In any of the above embodiments, optionally, it further includes: determining the operating gear of the second fan assembly corresponding to the lower air outlet according to the difference between the ambient temperature and the target temperature, wherein the second fan assembly The operating gears include high wind gear, medium high wind gear and mid wind gear.

In this embodiment, in order to ensure that the air duct corresponding to the upper air outlet and the air duct corresponding to the lower air outlet perform air flow circulation independently of each other, the upper air outlet and the lower air outlet are controlled to discharge air at different wind speeds, and since the lower air outlet The wind is responsible for cooling, so a higher wind speed is required. Therefore, when the first fan assembly above operates in a medium-low wind gear or a low wind gear, the second fan assembly is controlled to use one of the high wind gear, medium-high wind gear or medium wind gear. This kind of operation to ensure the cooling effect.

In any of the above embodiments, optionally, before entering the cleaning mode, the method further includes: when it is detected that the current ambient temperature is greater than the first temperature threshold and the current ambient humidity is greater than the preset first humidity threshold , to control the air conditioner to enter the cleaning mode.

In any of the above embodiments, optionally, after entering the cleaning mode, the method further includes: when it is detected that the ambient humidity is less than the second humidity threshold, controlling the air conditioner to exit the cleaning mode; after exiting the cleaning mode, the air conditioner The appliance stops running, or all the air outlets perform cooling and air supply, wherein the second humidity threshold is smaller than the first humidity threshold.

In this embodiment, when the air conditioner is equipped with a controller and a temperature and humidity sensor, it is detected that the indoor ambient humidity reaches S1 (the first humidity threshold) or higher, and the indoor ambient temperature reaches T1 (the first temperature threshold) at the same time. ) or above, the automatic control enters the cleaning mode. In this mode, the comfortable dehumidification function is realized by adjusting the compressor frequency, the opening degree of the electronic expansion valve and the rotational speed of the axial flow fan, and the indoor ambient humidity is as low as S2 (No. 2 humidity threshold), it automatically exits the cleaning mode, and automatically dehumidifies the operation by monitoring the ambient temperature and humidity, which simplifies the user's operation steps.

In any of the foregoing embodiments, optionally, before entering the cleaning mode, the method further includes: controlling the air conditioner to enter the cleaning mode under the condition that a cleaning instruction sent by the remote control device is detected.

In this embodiment, whether to enter the cleaning mode can also be determined through the received control signal, so as to realize the comfortable dehumidification function based on user control, which has higher control flexibility than the control scheme of automatically entering the cleaning mode.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. Through the technical solution of the present invention, an air conditioner and a corresponding cleaning control method are proposed. An air inlet is provided on the rear panel of the air conditioner housing of the air conditioner. A plurality of air outlets are opened longitudinally on the front panel, and between the air inlet and the air outlet, the evaporator and multiple sets of fan assemblies are arranged in sequence, wherein the multiple sets of fan assemblies and the multiple air outlets are correspondingly arranged one by one to pass the fan assembly. The evaporator is driven to discharge air from the corresponding air outlet, and the evaporator includes a plurality of heat exchange modules, and the plurality of heat exchange modules are arranged in correspondence with the plurality of sets of fan assemblies one by one, so as to form a matching module of multiple sets of heat exchange modules-fan assemblies-air outlet, Thereby, multiple parallel air outlet ducts are realized, and further, by setting an expansion valve on the refrigerant input branch of the first heat exchange module, by adjusting the opening degree of the expansion valve, the evaporation pressure of the first heat exchange module can be adjusted, so as to adjust the evaporation pressure of the first heat exchange module. The airflow passing through the first heat exchange module is liquefied by heat exchange, and the liquefied liquid can wash away the dirt on the surface of the evaporator during the process of flowing downward on the outer surface of the evaporator, thereby realizing the cleaning of the evaporator.

In addition, through the arrangement of multiple parallel air outlet air ducts, the uppermost air outlet air duct will export the remaining part of the airflow after heat exchange with the first heat exchange module, and the other air outlet air ducts can normally perform cooling and air outlet, thereby Simultaneous execution of cooling and cleaning can be achieved, and through the arrangement of multiple air outlets, the air volume can be increased relative to one air outlet. Compared with the air conditioner with only one air outlet, the cooling operation will not be affected by the execution of the cleaning operation. Effect.

In addition, each group of fan components adopts at least one axial flow fan structure. Compared with perfusion fans or centrifugal fans, axial flow fans can increase the air supply distance while reducing operating noise. The evaporator cooperates with the air outlet to achieve straight air outlet, which is also conducive to improving the circulation efficiency of the air flow.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

It should be noted that, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not preclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

Although preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of the present invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope of the claims of the present invention and its equivalent technology, and the present invention is also intended to include these changes and modifications.

Claims (19)

1. a kind of air conditioner characterized by comprising

Air-conditioner shell, correspondence offers air inlet and multiple air outlets on the air-conditioner shell；

Multiple fan assemblies are arranged close to the multiple air outlet, including the first fan assembly and the second fan assembly；

Evaporator is arranged close to the air inlet, including the first evaporation module arranged side by side from top to bottom and the second evaporation mold Block, the first evaporation module are correspondingly arranged with first fan assembly, the second evaporation module and second blower Component is correspondingly arranged,

Wherein, the cold medium flux of the first evaporation module is reduced by control and/or control reduces first fan assembly Revolving speed, with the frosting on first heat exchange module, after frosting, control increase it is described first evaporation module cold medium flux And/or control increases the revolving speed progress defrost of first fan assembly, to generate the condensed fluid for cleaning the evaporator.

2. air conditioner according to claim 1, which is characterized in that further include:

Controller is electrically connected between the multiple fan assembly respectively；

The inlet flow road of the first evaporation module is provided with the first electric expansion valve, the inlet flow of the second evaporation module Road is provided with the second electric expansion valve, first electric expansion valve and second electric expansion valve respectively with the control It is electrically connected between device,

Wherein, the aperture of first electric expansion valve is reduced by controller control and/or increases second electronics The aperture of expansion valve reduces the cold medium flux of the first evaporation module, so that the first evaporation Modular surface frosting.

3. air conditioner according to claim 2, which is characterized in that

The controller is also used to: after the evaporator surface frosting, if detecting in the tube temperature of the first evaporation module Default tube temperature threshold value is risen to, control increases the aperture of first electric expansion valve, to form liquid by defrosting operation.

4. air conditioner according to claim 2, which is characterized in that

The multiple air outlet includes the upper air outlet for being set to the top of the air-conditioner shell, and is set on described Lower air outlet below wind, first fan assembly are correspondingly arranged at the upper air outlet, and second fan assembly is corresponding It is arranged in the lower air outlet；

The controller is also used to: during cleaning the evaporator, the wind speed for controlling first fan assembly is small It is run in the wind speed of second fan assembly, to carry out refrigeration air-supply by the execution of the second fan assembly.

5. air conditioner according to claim 2, which is characterized in that

First fan assembly is formed by constructing to the first blower of rotation with the second blower, first blower and described second Blower is axial flow blower or diagonal flow fan, and first blower is arranged close to the evaporator, and second blower is close to described Air outlet setting；

Second fan assembly is any one in single axial flow blower, diagonal flow fan, cross flow fan or centrifugal blower.

6. air conditioner according to claim 5, which is characterized in that

The controller is also used to: the revolving speed for controlling to adjust first blower is greater than or equal to the revolving speed of second blower, And the rotating speed difference between the revolving speed of first blower and the revolving speed of second blower is less than or equal to rotational speed difference threshold value,

Wherein, the rotational speed difference threshold value is true according to the dimensional parameters of first blower and the dimensional parameters of second blower It is fixed.

7. the air conditioner according to any one of claim 2 to 6, which is characterized in that further include:

Temperature Humidity Sensor is electrically connected between the controller, and the Temperature Humidity Sensor is for acquiring environment temperature and ring Border humidity,

Wherein, if the controller detects that the environment temperature is greater than preset temperature threshold and the ambient humidity is greater than First environment humidity threshold adjusts the aperture of first electric expansion valve and/or the wind speed of first fan assembly, to open Dynamic clean operation controls knot if the controller detects that the ambient humidity deteriorates to less than second environment humidity threshold Beam clean operation, the first environment humidity threshold are greater than the second environment humidity threshold.

8. the air conditioner according to any one of claim 2 to 6, which is characterized in that further include:

Compressor is electrically connected between the controller, and is connect with the evaporator by refrigerant flow,

Wherein, the controller is also used to: before carrying out clean operation, according to the tube temperature of the first evaporation module, air inlet Return air temperature and the running frequency of the compressor adjust the aperture of first electric expansion valve, and/or according to described It is swollen that tube temperature, the return air temperature of air inlet and the running frequency of the compressor of second evaporation module adjust second electronics The aperture of swollen valve.

9. a kind of cleaning control method is suitable for such as air conditioner described in any item of the claim 1 to 8, in the air conditioner Air inlet and multiple air outlets between setting evaporator and multiple fan assemblies, the multiple fan assembly includes the first blower Component and the second fan assembly, the evaporator include the first evaporation module being correspondingly arranged with first fan assembly, with And the second evaporation module being correspondingly arranged with second fan assembly, which is characterized in that the cleaning control method includes:

If detecting, the cold medium flux for reducing the first evaporation module and/or control are controlled into cleaning mode reduces institute The revolving speed of the first fan assembly is stated, with the frosting on first heat exchange module；

After frosting, control increases the cold medium flux of the first evaporation module and/or control increases first fan assembly Revolving speed carry out defrost, to generate the condensed fluid for cleaning the evaporator.

10. cleaning control method according to claim 9, which is characterized in that be provided with control in the first evaporation module First electric expansion valve of cold medium flux processed, it is described second evaporation module on be provided with the second electric expansion valve, if the detection To cleaning mode is entered, then controls the cold medium flux for reducing the first evaporation module and/or control reduces first blower The revolving speed of component is specifically included with the frosting on first heat exchange module:

After entering the cleaning mode, control reduces the aperture of first electric expansion valve, to reduce first evaporation The cold medium flux of module reduces the evaporating pressure of first heat exchange module, the frosting on first heat exchange module.

11. cleaning control method according to claim 10, which is characterized in that after frosting, control increases described first The revolving speed that the cold medium flux and/or control for evaporating module increase first fan assembly carries out defrost, specifically includes:

If detecting, the tube temperature of the first evaporation module rises to default tube temperature threshold value, and control increases first electronic expansion The aperture of valve, to form the liquid by defrosting.

12. cleaning control method according to claim 10, which is characterized in that further include:

According to the first evaporation tube temperature of module, the delivery temperature of compressor, the return air temperature of the air inlet and described At least one of in the running frequency of compressor, the aperture regulation parameter of first electric expansion valve is determined, according to Aperture regulation parameter regulation aperture, the frosting on first heat exchange module.

13. cleaning control method according to claim 10, which is characterized in that the multiple air outlet includes and described The corresponding upper air outlet of one fan assembly, described after entering the cleaning mode, control reduces first electric expansion valve Aperture, with reduce it is described first evaporation module cold medium flux, reduce the evaporating pressure of first heat exchange module, in institute State frosting on the first heat exchange module, further includes:

After the aperture that control reduces first electric expansion valve, according to the relationship between environment temperature and second temperature threshold value The operational taps of determining the first fan assembly corresponding with the upper air outlet.

14. cleaning control method according to claim 13, which is characterized in that the operational taps include high wind file, in High wind file, middle wind file, middle low wind file and low wind file, the relationship according between environment temperature and second temperature threshold value determine The operational taps of the first fan assembly corresponding with the upper air outlet, specifically include:

In the case where detecting that the environment temperature is less than or equal to second temperature threshold value, control first fan assembly with The corresponding revolving speed operation of the low wind file；

In the case where detecting that the environment temperature is greater than the second temperature threshold value, first fan assembly is controlled with institute State the corresponding revolving speed operation of middle low wind file.

15. cleaning control method according to claim 11, which is characterized in that if described detect first evaporation mold The tube temperature of block rises to default tube temperature threshold value, and control increases the aperture of first electric expansion valve, to form institute by defrosting State liquid, further includes:

After the aperture that control increases first electric expansion valve, the operational taps of first fan assembly are raised in control, To carry out defrost.

16. cleaning control method according to claim 13, which is characterized in that multiple air outlets further include and described second The corresponding lower air outlet of fan assembly, the cleaning control method further include:

After entering the cleaning mode, second fan assembly is controlled by the lower air outlet and carries out refrigeration air-supply,

Wherein, the operational taps of second fan assembly are higher than the operational taps of first fan assembly.

17. the cleaning control method according to any one of claim 9 to 16, which is characterized in that entering the cleaning Before mode, further includes:

Detecting that current environment temperature is greater than the first temperature threshold and current ambient humidity is greater than default first humidity In the case where threshold value, the air conditioner is controlled into the cleaning mode；And

In the case where detecting the ambient humidity less than the second humidity threshold, controls the air conditioner and exit the cleaning mould Formula；

After exiting the cleaning mode, the air conditioner is out of service or the multiple air outlet carries out refrigeration air-supply,

Wherein, second humidity threshold is less than first humidity threshold.

18. the cleaning control method according to any one of claim 9 to 16, which is characterized in that entering the cleaning Before mode, further includes:

In the case where detection receives the cleaning instruction of remote control equipment transmission, the air conditioner is controlled into the cleaning mould Formula.

19. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The step of being performed, realizing the cleaning control method as described in any one of claim 9 to 18.