CN111237981A - Deicing method and deicing device for water pan of dehumidifier - Google Patents

Abstract

The invention discloses an ice melting device of a water pan of a dehumidifier, which comprises a dehumidifier body, wherein a first heat exchanger, a second heat exchanger, a compressor, a pressure reducer, a fan, a four-way reversing valve and a temperature detector arranged on the first heat exchanger are arranged in the dehumidifier body, the fan is positioned at the rear end of the second heat exchanger, the first heat exchanger is positioned at the front end of the second heat exchanger, two ends of the first heat exchanger are respectively connected with the pressure reducer and one end of the four-way reversing valve, two ends of the second heat exchanger are respectively connected with the pressure reducer and the other end of the four-way reversing valve, the other two ends of the four-way reversing valve are connected with two ends of the compressor, the water pan is arranged below the first heat exchanger and the second heat exchanger, and the compressor is positioned below the water pan. The invention also discloses an ice melting method of the water pan of the dehumidifier, and the invention realizes the energy-saving effect.

Description

Deicing method and deicing device for water receiving tray of dehumidifier

technical field

The invention relates to the technical field of dehumidifiers, and particularly designs a deicing method for a water receiving tray of a dehumidifier and a deicing device thereof.

Background technique

Dehumidifiers, also known as dehumidifiers, dryers, and dehumidifiers, can generally be divided into two categories: civil dehumidifiers and industrial dehumidifiers, which belong to a part of the air-conditioning family. Generally, a conventional dehumidifier consists of a compressor, a heat exchanger, a fan, a water container, a casing and a controller.

Its working principle is: the humid air is drawn into the machine by the fan, and then passes through the heat exchanger. At this time, the water molecules in the air condense into water droplets, and the treated dry air is discharged out of the machine. This cycle keeps the indoor humidity at a suitable level. Relative humidity, in which the refrigerant cycle process of the dehumidifier is as follows: the liquid refrigerant in the evaporator absorbs the heat in the air and begins to evaporate, the air is cooled and dehumidified, the liquid refrigerant evaporates and becomes a gaseous state, and then is sucked by the compressor and compressed (pressure and The temperature increases), the gaseous refrigerant discharges heat through the condenser, the air heats up, the refrigerant condenses into a liquid, and then is throttled through the expansion valve to become a low-temperature and low-pressure refrigerant and enters the evaporator to complete the refrigerant cycle process.

The current dehumidifier is easy to form frost when running at low temperature, and generally needs to be defrosted. During the defrosting process, the temperature is too low, which easily causes the water receiving tray to freeze. Therefore, a heating wire is installed at the bottom of the water receiving tray. The heating process of the water pan is used to realize the function of ice melting. However, due to the need to reset the heating wire, energy waste is serious, and it is particularly important to design an ice melting method with good energy saving effect.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above-mentioned deficiencies of the prior art and provide a kind of dehumidifier connection that utilizes the heat of the internal compressor of the dehumidifier to connect the water tray to perform automatic ice without additional heating wires, so as to realize the energy saving effect. Deicing method of water tray and deicing device thereof.

In order to achieve the above purpose, the present invention provides a method for deicing a water receiving tray of a dehumidifier, which specifically includes the following steps:

S1, provide a dehumidifier, the dehumidifier includes a first heat exchanger, a second heat exchanger, a compressor, a pressure reducer, a fan, a four-way reversing valve, and a temperature detector provided on the first heat exchanger;

S2. The dehumidification operation is started, when the dehumidifier is in the defrosting mode;

S3. Accumulate the times of dehumidification through the formula of Cd=Cd+1, and obtain the number of defrosting operations Cd of the first heat exchanger defrosting operation;

S4. Obtain the preset number of defrosting times Cs for the heat exchanger, and determine whether Cd≧Cs is established; if so, go to step S5; if not, return to step S2;

S5. It is considered that the ice-melting control of the water receiving tray starts, and the operation time Td of the ice-melting control is calculated at this time;

S6, let the compressor be in the open state, and the blower to be in the closed state;

S7, obtain the preset set ice melting control time Ts1, and determine whether Td≧Ts1 is established; if so, go to step S8; if not, return to step S6;

S8, start to measure the temperature Tn of the first heat exchanger, compare it with the acquired set temperature Ts of the first heat exchanger, and determine whether Tn≧Ts is established; if so, go to step S9; if not, return to step S6;

S9, let the compressor be in the stop state;

S10, start to calculate the compressor stop time St;

S11, determine whether Td≧Tx is established, the Tx is the preset ice melting control time Tx, if so, go to step S17; if not, go to step S12;

S12, determine whether St≧Sx is established, the Sx is the preset compressor stop time Sx, if yes, go to step S13; if not, go to step S9;

S13. Let the compressor change from stop to start state;

S14, start to calculate the compressor driving time Dt;

S15, determine whether Td≧Tx is established, the Tx is the preset ice melting control time Tx, if yes, go to step S17; if not, go to step S16;

S16, determine whether Dt≧Dx is established, the Dx is the preset compressor driving time Dx, if yes, go to step S10; if not, go to step S13;

S17, the ice melting control ends.

The invention also discloses an ice melting device for a water receiving tray of a dehumidifier, comprising a dehumidifier body, and a first heat exchanger, a second heat exchanger, a compressor, a pressure reducer, a fan, a first heat exchanger, a second heat exchanger, a compressor, a pressure reducer, a fan, The four-way reversing valve and the temperature detector arranged on the first heat exchanger, the fan is located at the rear end of the second heat exchanger, the first heat exchanger is located at the front end of the second heat exchanger, The two ends of the first heat exchanger are respectively connected to the pressure reducer and one end of the four-way reversing valve, the two ends of the second heat exchanger are respectively connected to the pressure reducer and the other end of the four-way reversing valve, and the four The other two ends of the reversing valve are connected to the two ends of the compressor, a water receiving tray is provided below the first heat exchanger and the second heat exchanger, and the compressor is located below the water receiving tray.

Further, in order to facilitate installation, the four-way reversing valve is located below the water receiving tray.

Further, in order to improve the deicing effect, the first heat exchanger and the second heat exchanger are mounted on the mounting bracket, and the water receiving tray is integrally formed with the mounting bracket.

Further, in order to improve the deicing effect, a compressor accommodating cavity with two sides blocked is provided in the mounting bracket, and the compressor accommodating cavity and the shell of the dehumidifier body cooperate to form a heat storage bin, the heat Below the water pan, and above the compressor accommodating cavity is an outlet communicating with the bottom of the water pan.

Further, in order to avoid heat diffusion and affect the ice melting effect, heat shielding plates for preventing heat diffusion are respectively provided on both sides of the bottom of the water receiving tray, and the heat shielding plates are located outside the outlet.

Further, to improve the ice melting efficiency and further realize the energy saving effect, the outlet diameter of the compressor accommodating cavity is equal to half of the diameter of the bottom of the water receiving tray.

The invention obtains a method for de-icing a water-receiving tray of a dehumidifier and an ice-melting device thereof. In the invention, the compressor is placed under the water-receiving tray, and then the heat generated by the compressor is connected to the water-receiving tray by the heat generated during operation. The ice is de-iced, so that the energy saving effect of de-icing is better without adding a heater in the later stage. The invention does not need to use a heating device such as a heater, and uses the waste heat of the compressor to decompose the ice on the water-receiving tray. Continuous dehumidification operation is performed in a sub-zero environment. Since the compressor as a heat source is installed in the lower part of the dehumidification device (condensate water generating device), the water receiving tray and the drain port, the heat generated by the compressor can be used to de-icing, and finally On the basis of maintaining the reliability of the compressor, the compressor is heated to achieve the control of melting the ice in the water receiving tray.

Description of drawings

Fig. 1 is the schematic flow chart of the upper half of the ice-melting method of a kind of dehumidifier water receiving tray of embodiment 1;

Fig. 2 is a schematic flow chart of the lower half of the deicing method for a water receiving tray of a dehumidifier according to Embodiment 1;

Fig. 3 is the connection schematic diagram of the control part in the ice melting device of a kind of dehumidifier water receiving tray of embodiment 1;

4 is a schematic diagram 1 of the internal structure of a deicing device for a water receiving tray of a dehumidifier in Example 1 when the shell is removed;

5 is a schematic diagram 2 of the internal structure of a deicing device for a water receiving tray of a dehumidifier in Example 1 when the shell is removed;

FIG. 6 is a graph showing the working state of compressor deicing in Embodiment 1. FIG.

In the figure: the first heat exchanger 1, the second heat exchanger 2, the compressor 3, the pressure reducer 4, the fan 5, the four-way reversing valve 6, the water receiving tray 7, the mounting bracket 8, the compressor accommodating chamber 9 , a heat storage bin 10, an outlet 11, a heat shield 12, a temperature detector 13, and a dehumidifier body 14.

Detailed ways

In order to understand the technical solutions of the present invention more clearly, the present invention will be further illustrated by the following embodiments in conjunction with the accompanying drawings.

Example 1:

As shown in FIG. 1-FIG. 2, a method for deicing a water receiving tray of a dehumidifier provided in this embodiment specifically includes the following steps:

S1, provide a dehumidifier, the dehumidifier includes a first heat exchanger, a second heat exchanger, a compressor, a pressure reducer, a fan, a four-way reversing valve, and a temperature detector provided on the first heat exchanger;

S2. The dehumidification operation is started, when the dehumidifier is in the defrosting mode;

S3. Accumulate the times of dehumidification through the formula of Cd=Cd+1, and obtain the number of defrosting operations Cd of the first heat exchanger defrosting operation;

S4. Obtain the preset number of defrosting times Cs for the heat exchanger, and determine whether Cd≧Cs is established; if so, go to step S5; if not, return to step S2;

S5. It is considered that the ice-melting control of the water receiving tray starts, and the operation time Td of the ice-melting control is calculated at this time;

S6, let the compressor be in the open state, and the blower to be in the closed state;

S7, obtain the preset set ice melting control time Ts1, and determine whether Td≧Ts1 is established; if so, go to step S8; if not, return to step S6;

S8, start to measure the temperature Tn of the first heat exchanger, compare it with the acquired set temperature Ts of the first heat exchanger, and determine whether Tn≧Ts is established; if so, go to step S9; if not, return to step S6;

S9, let the compressor be in the stop state;

S10, start to calculate the compressor stop time St;

S11, determine whether Td≧Tx is established, the Tx is the preset ice melting control time Tx, if so, go to step S17; if not, go to step S12;

S12, determine whether St≧Sx is established, the Sx is the preset compressor stop time Sx, if yes, go to step S13; if not, go to step S9;

S13. Let the compressor change from stop to start state;

S14, start to calculate the compressor driving time Dt;

S15, determine whether Td≧Tx is established, the Tx is the preset ice melting control time Tx, if yes, go to step S17; if not, go to step S16;

S16, determine whether Dt≧Dx is established, the Dx is the preset compressor driving time Dx, if yes, go to step S10; if not, go to step S13;

S17, the ice melting control ends.

The present invention first obtains the data of how many times the number of defrosting reaches the number of times of defrosting, and the water receiving tray will freeze at this time, and then preset the number of defrosting times corresponding to the freezing of the water receiving tray and store it. At the beginning, the defrosting times are monitored in real time and compared with the preset defrosting times Cd. Once the defrosting times obtained in real time are greater than the preset defrosting times (that is, the defrosting requirements are met), the compressor is started to work and generate heat. , the heat rises to perform the ice melting operation on the ice on the water tray. At this time, the operation time Td of the ice melting is obtained, and the preset ice melting time is judged, and the first heat exchanger temperature Tn is calculated and compared with the preset temperature mechanical energy The process of determining whether the deicing can be ended, and the present invention extends the service life of the compressor by intermittently controlling the compressor to stop or start during the entire control process, so as to ensure that the compressor is not in a long period of time during the deicing process. Therefore, the method of the present invention can realize the determination of the freezing state of the water tray by detecting the number of defrosts in real time, and when the preset freezing requirement is reached, control the compressor to intermittently start and stop to realize the automatic operation of docking the water tray for freezing. process, there is no need to add additional heating device to realize the ice-melting operation process of docking the water tray, and the compressor is intermittently controlled to ensure that the compressor is damaged due to long-term use, and ultimately prolong the service life of the compressor.

As shown in Figures 3-5, this embodiment also discloses an ice melting device for a water receiving tray of a dehumidifier, which includes a dehumidifier body 14, and a first heat exchanger 1, a second heat exchanger 1 and a second heat exchanger are arranged in the dehumidifier body 14. The exchanger 2, the compressor 3, the pressure reducer 4, the fan 5, the four-way reversing valve 6 and the temperature detector 13 provided on the first heat exchanger 1, the fan 5 is located in the second heat exchanger 2 The rear end of the first heat exchanger 1 is located at the front end of the second heat exchanger 2, and both ends of the first heat exchanger 1 are respectively connected to the pressure reducer 4 and one end of the four-way reversing valve 6 , the two ends of the second heat exchanger 2 are respectively connected to the pressure reducer 4 and the other end of the four-way reversing valve 6, and the other two ends of the four-way reversing valve 6 are connected to the two ends of the compressor 3. Below the heat exchanger 1 and the second heat exchanger 2 is provided a water receiving tray 7 , and the compressor 3 is located below the water receiving tray 7 .

Further, in order to facilitate installation, the four-way reversing valve 6 is located below the water receiving tray 7 .

Further, in order to improve the deicing effect, the first heat exchanger 1 and the second heat exchanger 2 are mounted on the mounting bracket 8 , and the water receiving tray 7 and the mounting bracket 8 are integrally formed.

Further, in order to improve the deicing effect, a compressor accommodating chamber 9 with both sides blocked is provided in the mounting bracket 8, and the compressor accommodating chamber 9 cooperates with the outer shell of the dehumidifier body 14 to form a heat storage bin 10. The heat storage bin 10 is located below the water receiving tray 7 , and above the compressor accommodating chamber 9 is an outlet 11 that communicates with the bottom of the water receiving tray 7 .

Further, in order to avoid heat diffusion and affect the ice melting effect, heat shields 12 are respectively provided on both sides of the bottom of the water receiving tray 7 to prevent heat diffusion, and the heat shields 12 are located outside the outlet 11 .

Further, to improve the ice melting efficiency and further realize the energy saving effect, the diameter of the outlet 11 of the compressor accommodating chamber 9 is equal to half of the diameter of the bottom of the water receiving tray 7 .

In the present invention, the compressor 3 is placed under the water receiving tray 7, and then the ice generated on the water tray 7 is melted by the heat generated when the compressor 3 works, so as to realize the ice melting process without adding a heater in the later stage. The energy-saving effect is better. The present invention does not need to use a heating device such as a heater, and uses the residual heat of the compressor to dissolve the ice on the water receiving tray, so as to realize continuous dehumidification operation in a sub-zero environment, and the compressor as a heat source is set. In the lower part of the dehumidification device (condensate generation device), the water receiving tray and the drain outlet, the heat generated by the compressor can be used to de-icing, and finally the compressor is heated on the basis of maintaining the reliability of the compressor. Control of ice melting in the drip tray.

During operation, when the deicing requirement is met, the fan is turned off after dehumidification operation for a certain period of time, and only the compressor is actuated. After that, the compressor is stopped according to the temperature of the first heat exchanger, and then ON/OFF is repeated. The switching of the OFF state and the compressor drive during intermittent operation are required to prevent wear of the sliding part for more than 3 minutes and the winding temperature to be less than 120°C. Therefore, the actual situation needs to be different according to the ambient temperature and the type of compressor. It is necessary to adjust the ON time and OFF time of the compressor. In this embodiment, the start and stop times of the compressor in the process of entering the ice melting process are as follows: when the ice melting requirement is met, the compressor is in the open state at this time. At this time, the fan can be stopped, only to ensure the compressor works, and then by obtaining the temperature of the first heat exchanger 1, when the preset requirement is reached, the compressor can be controlled to stop for 15 minutes, and then the compressor will work for 3 minutes and then stop for 15 minutes. The cycle work is performed sequentially until the end of the ice melting process, as shown in Figure 6.

Claims (7)

1. a deicing method of a dehumidifier water-receiving tray, is characterized in that, specifically comprises the following steps: S1, provide a dehumidifier, the dehumidifier includes a first heat exchanger, a second heat exchanger, a compressor, a pressure reducer, a fan, a four-way reversing valve, and a temperature detector provided on the first heat exchanger; S2. The dehumidification operation is started, when the dehumidifier is in the defrosting mode; S3. Accumulate the times of dehumidification through the formula of Cd=Cd+1, and obtain the number of defrosting operations Cd of the first heat exchanger defrosting operation; S4. Obtain the preset number of defrosting times Cs for the heat exchanger, and determine whether Cd≧Cs is established; if so, go to step S5; if not, return to step S2; S5. It is considered that the ice-melting control of the water receiving tray starts, and the operation time Td of the ice-melting control is calculated at this time; S6, let the compressor be in the open state, and the blower to be in the closed state; S7, obtain the preset set ice melting control time Ts1, and determine whether Td≧Ts1 is established; if so, go to step S8; if not, return to step S6; S8, start to measure the temperature Tn of the first heat exchanger, compare it with the acquired set temperature Ts of the first heat exchanger, and determine whether Tn≧Ts is established; if so, go to step S9; if not, return to step S6; S9, let the compressor be in the stop state; S10, start to calculate the compressor stop time St; S11, determine whether Td≧Tx is established, the Tx is the preset ice melting control time Tx, if so, go to step S17; if not, go to step S12; S12, determine whether St≧Sx is established, the Sx is the preset compressor stop time Sx, if yes, go to step S13; if not, go to step S9; S13. Let the compressor change from stop to start state; S14, start to calculate the compressor driving time Dt; S15, determine whether Td≧Tx is established, the Tx is the preset ice melting control time Tx, if yes, go to step S17; if not, go to step S16; S16, determine whether Dt≧Dx is established, the Dx is the preset compressor driving time Dx, if yes, go to step S10; if not, go to step S13; S17, the ice melting control ends. 2. An ice melting device for a water receiving tray of a dehumidifier, comprising a dehumidifier body (14), characterized in that: a first heat exchanger (1) and a second heat exchanger are arranged in the dehumidifier body (14) (2), a compressor (3), a pressure reducer (4), a fan (5), a four-way reversing valve (6), and a temperature detector (13) provided on the first heat exchanger (1), The fan (5) is located at the rear end of the second heat exchanger (2), the first heat exchanger (1) is located at the front end of the second heat exchanger (2), and the first heat exchanger (1) is located at the front end of the second heat exchanger (2). Both ends of (1) are respectively connected to the pressure reducer (4) and one end of the four-way reversing valve (6), and the two ends of the second heat exchanger (2) are respectively connected to the pressure reducer (4) and the four-way switch. The other end of the valve (6) is connected to the other end of the four-way reversing valve (6), and the other ends of the four-way reversing valve (6) are connected to the two ends of the compressor (3). ) is provided with a water receiving tray (7), and the compressor (3) is located below the water receiving tray (7). 3 . The ice-melting device for a water receiving tray of a dehumidifier according to claim 2 , wherein the four-way reversing valve ( 6 ) is located below the water receiving tray ( 7 ). 4 . 4. An ice defrosting device for a water receiving tray of a dehumidifier according to claim 2 or 3, characterized in that: the first heat exchanger (1) and the second heat exchanger (2) are mounted on a mounting bracket On (8), the water receiving tray (7) and the mounting bracket (8) are integrally formed. 5. The ice-melting device for a water-receiving tray of a dehumidifier according to claim 4, characterized in that: a compressor accommodating cavity (9) with both sides blocked is provided in the mounting bracket (8), and the compressor The accommodating chamber (9) cooperates with the shell of the dehumidifier body (14) to form a heat storage bin (10), the heat storage bin (10) is located below the water receiving tray (7), and the compressor accommodating chamber ( Above 9) is the outlet (11) that communicates with the bottom of the water receiving tray (7). 6 . The ice-melting device for a water receiving tray of a dehumidifier according to claim 5 , wherein the two sides of the bottom of the water receiving tray ( 7 ) are respectively provided with heat shields ( 12 ) to prevent heat from spreading, 6 . The heat shield (12) is located outside the outlet (11). 7. An ice melting device for a water receiving tray of a dehumidifier according to claim 5, characterized in that: the diameter of the outlet (11) of the compressor accommodating chamber (9) is equal to the diameter of the bottom of the water receiving tray (7). Half.

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