JPH09264596A - Separable air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent condensate from dropping down from an indoor machine out of operation by providing a condensate sensor in the indoor machine and operating a blower of the indoor machine for a predetermined period of time when the condensate sensor of the machine senses condensate. SOLUTION: In the case that only one of two indoor machines is operated for refrigeration (S1), in order to prevent malfunction of an electronic control valve of a refrigerant circuit due to fixing of the control valve, the indoor machine body, out of operation, is cooled with refrigerant flowing through a heat exchanger to open the electronic control-valve of the indoor machine out of operation. If a large amount of water vapor is generated under the suspended indoor machine, the vapor gets into an indoor casing, where the vapor reaches a clew point and is condensed. If the condensate is sensed by a condensate sensor (S2, 3), a blower of the suspended indoor machine is operated for a predetermined time (S4, 5) to forcibly send air against the surface of the condensate, thereby to vaporize it. Thus condensate is prevented from dropping clown from the indoor machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit.

[0002]

2. Description of the Related Art FIG. 30 is a refrigerant circuit diagram of a conventional separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit. In the figure, 1 is a compressor, 2 is a four-way valve that changes the flowing direction of the refrigerant and switches between cooling and heating operations,
3 is an outdoor heat exchanger, 4a and 4b are electronic expansion valves for adjusting the flow rate of the refrigerant to the respective indoor heat exchangers, 5a and 5b are indoor heat exchangers 6a and 6b, and the temperature of the indoor heat exchanger is The tube temperature thermistors 7 and 8 for detection are distributors for distributing and joining the refrigerant.

During the cooling operation, the refrigerant flows in the direction indicated by the solid line arrow in FIG. 30, and the refrigerant discharged from the compressor 1 is condensed in the outdoor heat exchanger 3 and distributed in the distributor 7, and the electronic expansion valve 4a, Four
It is decompressed in b, evaporated in the indoor heat exchangers 5a and 5b, merged in the distribution section 8 and returned to the compressor 1. Indoor heat exchanger 5
When the refrigerant evaporates in a and 5b, the heat absorbed absorbs the air in the air-conditioned room. In addition, the flow of the refrigerant during the heating operation is the reverse of that during cooling in the direction of the dotted line arrow in FIG. 30, and the heat released during condensation in the indoor heat exchangers 5a and 5b adjusts the air conditioning of the air-conditioned room. .

The amount of discharged refrigerant is classified into two types: a type in which the compressor 1 is operated and stopped, and a type in which the rotation speed of the compressor 1 is varied.

The electronic expansion valves 4a, 4b are provided in the refrigerant circuit corresponding to the heat exchangers 5a, 5b of a plurality of indoor units, and the pressure reduction amount and the indoor heat exchangers 5a, 5b are controlled by the opening of the valves.
Adjusting the refrigerant flow rate to the.

The tube temperature thermistors 6a and 6b are provided in the indoor heat exchangers 5a and 5b, respectively, to detect the temperature of the indoor heat exchangers 5a and 5b, to prevent freezing during cooling, and to detect the temperature during heating. It is used to protect the refrigerant circuit from high pressure due to rise.

Each of the indoor units has a switch for adjusting the wind speed by turning the power on / off, switching between cooling / heating, and switching the rotation speed of the indoor blower. When not only the operation of the indoor units A or B but also the operation contents of the two indoor units are the same, it is possible to simultaneously operate the plurality of connected indoor units.
When only the indoor unit A or B is operated, the electronic expansion valve of the stopped indoor unit is slightly opened to allow the refrigerant to flow to the heat exchanger for the purpose of preventing malfunction by fixing the electronic expansion valve.

Next, the indoor unit will be described. FIG. 31 is a sectional side view of a conventional separation type air conditioner indoor unit. In the figure, 5 is an indoor heat exchanger, 6 is a tube temperature thermistor, and 9
Is an indoor unit main body housing, 10 is a suction grille, 11 is a filter, 12 is an indoor blower, and 13 is an outlet.

The air in the air-conditioned room is sucked into the air conditioner indoor unit via the suction grille 10, dust is removed by the filter 11, heat is exchanged by the heat exchanger 5, and the indoor blower 1
It is blown out from the outlet 13 according to the rotating speed of 2. When the air flow rate of the indoor unit is automatically adjusted by the air conditioner body, the air flow rate is increased when the difference between the set temperature and the room temperature is large, and the air flow rate is decreased when the difference between the set temperature and the room temperature is small. In addition, during heating operation, the upper limit of air flow is regulated by the temperature of the pipe noise thermistor.

However, when only the indoor unit B is operated for cooling, the main body housing of the indoor unit A which is stopped has the electronic expansion valve 4
Since a is slightly opened, the refrigerant discharged from the compressor 1 flows into the heat exchanger 5a and is cooled. When a large amount of steam is generated under the stopped indoor unit A, or when the indoor unit is installed near the bathroom and steam is continuously generated for a long time, the dew condensation water is the stopped indoors. There was a phenomenon that it entered the housing, reached the dew point, condensed, and dripped.

In an air conditioner in which a plurality of indoor units are connected to one outdoor unit, Japanese Patent Laid-Open Publication No. 6-213497 proposes a measure for preventing condensation water dripping from the stopped indoor unit. .

[0012]

Since the conventional separation type air conditioner is configured as described above, only the indoor unit A is in the cooling operation, and the indoor unit A main body which is stopped has its heat exchanger 5a.
When a large amount of water vapor is generated under the stopped indoor unit A by being cooled by the refrigerant flowing into the inside of the stopped indoor unit A, the steam enters the inside of the stopped indoor unit to condense and drip to wet the floor surface under the indoor unit housing. There was a problem.

As a means for preventing dripping, the indoor blower 1
Although there is also a means for continuously operating No. 2, the indoor blower 12 is always operated, which causes a problem that the power consumption increases.

The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an air conditioner in which the dew condensation water is prevented from dripping from a stopped indoor unit and the power consumption is reduced. To aim.

[0015]

A separate type air conditioner according to a first aspect of the present invention is a separate type air conditioner in which a plurality of indoor units are connected to a single outdoor unit. If the dew sensor of the indoor unit that is installed and stopped detects dew condensation, the blower of the stopped indoor unit is operated for a predetermined time (T1).
It is characterized by driving.

According to a second aspect of the present invention, in the separation type air conditioner according to the first aspect, when the dew condensation sensor of the stopped indoor unit detects dew condensation, the blower of the stopped indoor unit is dewed. It is characterized by operating until the dew condensation is no longer detected.

A separate air conditioner according to a third aspect of the present invention is a separate air conditioner in which a plurality of indoor units are connected to a single outdoor unit. When the dew condensation sensor of the machine detects dew condensation, the blower of the stopped indoor unit is operated for a predetermined time (T2), and when the dew condensation sensor of the indoor unit detects dew condensation again, the rotation speed of the blower of the indoor unit is changed. It is characterized by increasing and driving for a predetermined time (T3).

According to a fourth aspect of the present invention, there is provided a separation type air conditioner according to the third aspect, wherein when the dew condensation sensor does not detect dew condensation after the number of rotations of the blower of the indoor unit is increased. It is characterized by stopping the blower.

According to a fifth aspect of the present invention, there is provided a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit. When the dew condensation sensor of the machine detects dew condensation, the blower of the stopped indoor unit is operated for a predetermined time (T4), and when the dew condensation sensor of the indoor unit detects dew condensation again, the rotation speed of the blower of the indoor unit is changed. If the dew sensor of the indoor unit detects dew condensation, the number of rotations of the blower of the indoor unit is reduced and the dew sensor is operated for a predetermined time (T6).
It is characterized by driving.

According to a sixth aspect of the present invention, in the separation type air conditioner according to the fifth aspect, when the dew condensation sensor does not detect dew condensation after the number of rotations of the blower of the indoor unit is reduced, It is characterized by stopping the blower.

According to a seventh aspect of the invention, there is provided the separation type air conditioner according to the first aspect, characterized in that the compressor is stopped at the same time when the blower of the stopped indoor unit is operated.

According to an eighth aspect of the present invention, in the separation type air conditioner according to the seventh aspect, the dew condensation sensor detects dew condensation after the compressor is stopped at the same time as the operation of the blower of the stopped indoor unit. When it disappears, the blower of the stopped indoor unit is stopped, and at the same time, the operation of the compressor is restarted.

According to a ninth aspect of the present invention, there is provided a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit. When the dew condensation sensor detects dew condensation on the machine, the compressor is stopped, and when the dew condensation sensor on the stopped indoor unit detects dew condensation after the elapse of a predetermined time (T7), the blower of the stopped indoor unit is operated, After the elapse of a predetermined time (T8), the blower of the stopped indoor unit is stopped and the operation of the compressor is restarted.

According to a tenth aspect of the invention, in the separation type air conditioner according to the ninth aspect, when the dew condensation sensor stops detecting dew condensation after the blower of the stopped indoor unit is operated, it is stopped. It is characterized in that the blower of the inside indoor unit is stopped and the operation of the compressor is restarted.

An eleventh aspect of the separation type air conditioner according to the first aspect is characterized in that the operating frequency of the compressor is reduced simultaneously with the operation of the blower of the indoor unit which is stopped.

According to a twelfth aspect of the present invention, in the separation type air conditioner according to the eleventh aspect, the dew condensation sensor is used after the operation frequency of the compressor is reduced simultaneously with the operation of the blower of the indoor unit which is stopped. When no longer detected, the blower of the stopped indoor unit is stopped and at the same time the operating frequency of the compressor is increased.

According to a thirteenth aspect of the present invention, there is provided a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit. When the dew condensation sensor of the machine detects dew condensation, the operating frequency of the compressor is decreased, and when the dew sensor of the stopped indoor unit detects dew condensation after the elapse of a predetermined time (T9), the blower of the stopped indoor unit is It is characterized in that the blower of the indoor unit, which is in operation and stopped after a lapse of a predetermined time (T10), is stopped and the operating frequency of the compressor is increased.

In the air conditioner according to a fourteenth aspect of the present invention, in the air conditioner according to the thirteenth aspect, when the dew condensation sensor stops detecting dew condensation after the blower of the stopped indoor unit is operated, it is stopped. It is characterized in that the blower of the inside indoor unit is stopped and the operating frequency of the compressor is increased.

According to a fifteenth aspect of the present invention, in the separation type air conditioner according to the first aspect, at the same time as the operation of the blower of the stopped indoor unit, the electronic expansion valve for the operating indoor unit is opened and stopped. It is characterized in that the electronic expansion valve of the inside indoor unit is closed.

According to a sixteenth aspect of the present invention, in the separation type air conditioner according to the fifteenth aspect, the electronic expansion valve for the operating indoor unit is opened and stopped simultaneously with the operation of the blower of the stopped indoor unit. When the dew condensation sensor stops detecting dew condensation after closing the electronic expansion valve of the inside indoor unit, the blower of the stopped indoor unit is stopped, and at the same time, the electronic expansion valve is returned to the normal control.

According to a seventeenth aspect of the present invention, in the separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, the indoor unit is provided with a dew condensation sensor and the indoor unit is stopped. When the dew condensation sensor detects dew condensation on the machine, the electronic expansion valve for the indoor unit that is operating is opened, the electronic expansion valve of the indoor unit that is stopped is closed, and after a predetermined time (T11) has elapsed, the indoor expansion of the stopped indoor unit is stopped. When the dew condensation sensor detects dew condensation, it operates the blower of the stopped indoor unit, stops the blower of the stopped indoor unit after the elapse of a predetermined time (T12), and returns the electronic expansion valve to normal control. And

A separate type air conditioner according to an eighteenth aspect of the present invention is the separation type air conditioner according to the seventeenth aspect, wherein when the dew condensation sensor stops detecting dew condensation after the blower of the stopped indoor unit is operated. It is characterized by stopping the blower of the inside indoor unit and returning the electronic expansion valve to the normal control.

A separate type air conditioner according to a nineteenth aspect of the present invention is the separation type air conditioner according to the first aspect, wherein a valve is provided between the indoor heat exchanger on the gas pipe side and the distribution unit, and the dew condensation sensor of the indoor unit is stopped. When the dew condensation is detected, the valve is closed simultaneously with the operation of the blower of the stopped indoor unit.

A separate type air conditioner according to a twentieth aspect of the invention is the separation type air conditioner according to the nineteenth aspect, wherein the dew condensation sensor does not detect dew condensation after the valve is closed at the same time when the blower of the stopped indoor unit is operated. In this case, the blower of the stopped indoor unit is stopped and the valve is opened at the same time.

According to a twenty-first aspect of the present invention, there is provided a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, the dew sensor is provided in the indoor unit, and the gas pipe side is provided. A valve is installed between the indoor heat exchanger and the distribution unit, and when the dew condensation sensor of the stopped indoor unit detects dew condensation, the valve is opened and the dew sensor of the stopped indoor unit dewed after a predetermined time (T13). When the air conditioner is detected, the blower of the stopped indoor unit is operated, and after the lapse of a predetermined time (T14), the blower of the stopped indoor unit is stopped and the valve is closed.

According to a twenty-second aspect of the present invention, in the separation type air conditioner according to the twenty-first aspect, when the dew condensation sensor stops detecting dew condensation after the blower of the stopped indoor unit is operated, it is stopped. It is characterized by stopping the blower of the inside indoor unit and closing the valve.

According to a twenty-third aspect of the present invention, in the separation type air conditioner according to the first aspect, a bypass circuit and a bypass valve of the indoor heat exchanger are provided, and a dew condensation sensor of the stopped indoor unit detects dew condensation. In this case, the bypass valve is opened simultaneously with the operation of the blower of the indoor unit that is stopped.

According to a twenty-fourth aspect of the present invention, in the separation type air conditioner according to the twenty-third aspect, when the dew condensation sensor no longer detects dew condensation after operating the blower of the stopped indoor unit, it is stopped. The feature is that the blower of the inside indoor unit is stopped and the bypass valve is closed at the same time.

According to a twenty-fifth aspect of the present invention, in the separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, the indoor unit is provided with a dew condensation sensor and the indoor heat exchange is performed. When the dew condensation sensor of the stopped indoor unit detects dew condensation, the bypass valve is opened and the dew sensor of the stopped indoor unit detects dew condensation after a predetermined time (T15) has elapsed. In the case, operate the blower of the stopped indoor unit for a predetermined time (T16)
It is characterized in that the blower of the indoor unit which is stopped after a lapse of time is stopped and the bypass valve is closed.

According to a twenty-sixth aspect of the present invention, in the separation type air conditioner according to the twenty-fifth aspect, when the dew condensation sensor no longer detects dew condensation after operating the blower of the stopped indoor unit, it is stopped. The blower of the inside indoor unit is stopped and the bypass valve is closed.

[0041]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Embodiment 1 of the present invention will be described below with reference to the drawings. In the separation type air conditioner described in this embodiment, a plurality of indoor units are connected to one outdoor unit, and here, a case in which two indoor units A and B are connected will be described. 1 is a cross-sectional side view of an air conditioner indoor unit showing a first embodiment of the present invention. In the figure, 1
Dew condensation sensor 4 is the same as FIG. 31 in other respects.

FIG. 2 is a flow chart showing the control method of the first embodiment. When only the indoor unit B is operated for cooling, the electronic expansion valve of the stopped indoor unit A is slightly opened in order to prevent malfunction by fixing the electronic expansion valve of the refrigerant circuit. Is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under A of the indoor unit that is stopped, the water vapor enters the inside of the stopped indoor enclosure, reaches the dew point, condenses, and drops, but in the present embodiment, steps S1 to S5 are shown. As described above, when dew condensation occurs on the inner surface of the main body due to the water vapor, the dew condensation sensor 14 detects the dew condensation and operates the blower 12 of the indoor unit for a predetermined time. It is possible to prevent dripping from the machine.

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a flowchart showing a control method according to the second embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing to reach the dew point and condense and drip, but in the present embodiment, as shown in steps S11 to S14. When water vapor causes dew condensation on the inner surface of the main body, the dew condensation sensor 14 detects the dew condensation and operates the blower 12 of the indoor unit for a predetermined time. It is possible to prevent dripping from the machine. Further, as shown in steps S15 to S17, by determining the presence or absence of dew condensation water of the dew condensation sensor 14, the indoor blower can be operated only for a necessary time, so that power consumption can be suppressed.

Embodiment 3. Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a flow chart showing a control method according to the third embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing to reach the dew point and condense and drip, but in the present embodiment, as shown in steps S21 to S28. When the dew condensation occurs on the inner surface of the main body due to the water vapor, the dew condensation sensor 14 detects the dew condensation and operates the blower 12 of the indoor unit for a predetermined time. By raising and stopping for a predetermined period of time, the wind applied to the surface of the dew condensation water is increased to evaporate, so that not only the drip from the indoor unit can be prevented but also the operating time of the indoor blower 12 can be shortened.

FIG. 5 is a flow chart showing another control method of this embodiment. Steps S29 and S
By adding 30, the operating time of the indoor blower 12 can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Fourth Embodiment Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a flow chart showing a control method according to the fourth embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing to reach the dew point, condense and drip, but in the present embodiment, as shown in steps S31 to S41. When the water vapor causes dew condensation on the inner surface of the main body, or when the indoor unit is installed near a bathroom and water vapor is continuously generated for a long time, the dew condensation sensor 14 detects the dew condensation and the indoor unit blower. If the dew condensation sensor 14 still detects dew condensation after operating the 12 for a predetermined time, the blower 12
The condensation sensor 14 is still running after the number of rotations has been raised
If the dew condensation water adheres to the surface of the dew condensation water, the number of rotations of the blower 12 is reduced to operate, thereby increasing the amount of wind applied to the surface of the dew condensation water to evaporate, and it is possible to prevent the growth of the dew condensation water thereafter. It is possible to prevent dripping from the indoor unit.

FIG. 7 is a flow chart showing another control method of the fourth embodiment. Step S42,
By adding S43, the operating time of the indoor blower 12 can be optimally adjusted by sensing the dew condensation sensor 14, and power consumption can be reduced.

Embodiment 5 FIG. Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a flow chart showing a control method according to the fifth embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of steam is generated under the stopped indoor unit A, the steam enters the inside of the stopped indoor enclosure, reaches the dew point, and condenses and drip, but in the present embodiment, the steam condenses on the inner surface of the main body. When occurs, the dew condensation sensor 14 detects dew condensation and stops the operation of the compressor at the same time as the operation of the blower 12 of the indoor unit, and after a predetermined time elapses, the operation of the blower 12 and the operation of the compressor are restarted. Since it is possible to prevent not only evaporation of dew condensation water but also generation of dew condensation water by operating the indoor blower 12, it is possible to prevent dripping from the indoor unit. This is effective for an air conditioner of the type that adjusts the amount of refrigerant discharged from the compressor by operating or stopping.

FIG. 9 is a flow chart showing another control method of this embodiment. Steps S56, S
By adding 57, the operating time of the indoor blower 12 can be optimally adjusted by sensing the dew condensation sensor 14, and power consumption can be reduced.

Embodiment 6 FIG. Hereinafter, a sixth embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a flow chart showing the control method according to the sixth embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing, reaches the dew point, and condenses and drip, but in the present embodiment, steps S61 to S68.
As shown in, when dew condensation occurs on the inner surface of the main body due to water vapor, the dew condensation sensor 14 detects dew condensation and stops the compressor, and when the dew condensation sensor 14 detects dew condensation after a predetermined time, it is stopped. Operate the blower 12 of the indoor unit of
After a lapse of a predetermined time, the blower 12 is stopped and the operation of the compressor is restarted.
This is effective not only for preventing dripping from the indoor unit without operating, but also for an air conditioner of the type that adjusts the amount of refrigerant discharged from the compressor by operating or stopping.

FIG. 11 is a flow chart showing another control method of this embodiment. By adding step S69, the operation time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Embodiment 7. Hereinafter, a seventh embodiment of the present invention will be described with reference to the drawings. FIG. 12 is a flow chart showing a control method according to the seventh embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of steam is generated under the stopped indoor unit A, the steam enters the inside of the stopped indoor enclosure, reaches the dew point, and condenses and drip, but in the present embodiment, the steam condenses on the inner surface of the main body. If the dew condensation occurs, the dew condensation sensor 14 detects the dew condensation, and the operation speed of the compressor is reduced at the same time as the operation of the blower 12 of the indoor unit. After a predetermined time, the operation stop of the fan 12 and the operation speed of the compressor are reduced. Because of the increase, it is possible to prevent not only evaporation of dew condensation water but also growth of dew condensation by operating the blower 12, so that not only the dripping from the indoor unit can be prevented, but also the amount of refrigerant discharged from the compressor depends on its rotation speed. This is effective in the case of the adjusting type, and since the rotation of the compressor is not stopped, it is possible to continuously flow the refrigerant to the operating indoor unit B, and continuous air conditioning can be performed.

FIG. 13 is a flow chart showing another control method of this embodiment. By adding step S76, the operation time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Embodiment 8. Embodiment 8 of the present invention will be described below with reference to the drawings. FIG. 14 is a flow chart showing a control method according to the eighth embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing to reach the dew point, condensate and drip, but in the present embodiment, steps S81 to S8.
As shown in FIG. 8, when dew condensation occurs on the inner surface of the main body due to water vapor, the dew condensation sensor 14 detects the dew condensation and reduces the operating speed of the compressor.
Is detecting dew condensation, the blower 12 of the stopped indoor unit is operated, and after a lapse of a predetermined time, the blower 12 is stopped and the rotation speed of the compressor is increased. In this case, not only can the dripping from the indoor unit be prevented without operating the blower 12, but it is effective in the case of a type in which the amount of refrigerant discharged from the compressor is adjusted by its rotation speed, and the compressor is not stopped, so It is possible to continuously flow the refrigerant to the indoor unit B, and continuous air conditioning can be performed.

FIG. 15 is a flow chart showing another control method of this embodiment. By adding step S89, the operation time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Embodiment 9 FIG. Hereinafter, a ninth embodiment of the present invention will be described with reference to the drawings. 16 is a flow chart showing a control method according to the ninth embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing, reaches the dew point, condenses, and drops, but in the present embodiment, steps S91 to S9.
As shown in FIG. 5, when dew condensation occurs on the inner surface of the main body due to water vapor, the dew condensation sensor 14 detects dew condensation and opens the electronic expansion valve 4b for the indoor unit that is operating at the same time as the operation of the blower 12 of the indoor unit, and then stops. The electronic expansion valve 4a for the indoor unit inside is closed, and after a predetermined time has elapsed, the blower 12 is stopped and the electronic expansion valve 4 is set to the normal control. Therefore, the operation of the blower 12 not only evaporates dew condensation water but also prevents dew condensation. It is also possible to prevent growth and prevent dripping from the indoor unit, and it is effective for adjusting the amount of refrigerant discharged from the compressor both for the type by operating or stopping and the type by the number of revolutions of the compressor. Since it is not stopped, the refrigerant can be continuously supplied to the operating indoor unit B, and continuous air conditioning can be performed.

FIG. 17 is a flow chart showing another control method of this embodiment. By adding step S96, the operation time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Embodiment 10 FIG. Hereinafter, a tenth embodiment of the present invention will be described with reference to the drawings. FIG. 18 is a flow chart showing the control method according to the tenth embodiment of the present invention. When only the indoor unit B is operated for cooling, the stopped main body of the indoor unit A is cooled by the refrigerant flowing through the heat exchanger.
When a large amount of water vapor is generated under the stopped indoor unit A,
The water vapor enters the stopped indoor casing, reaches the dew point, condenses, and drops, but in the present embodiment, step S10.
As shown in 1 to S108, when dew condensation occurs on the inner surface of the main body due to water vapor, the dew condensation sensor 14 detects the dew condensation and opens the electronic expansion valve 4b for the indoor unit that is operating, and the electronic for the indoor unit that is stopped. After the expansion valve 4a is closed and a predetermined time has passed,
When the dew condensation sensor 14 detects dew condensation, the blower 12 of the stopped indoor unit is operated, and after a lapse of a predetermined time, the blower 12 is stopped and the electronic expansion valve 4 is normally controlled. When the amount is small, not only can the dripping from the indoor unit be prevented without operating the blower 12, but the amount of refrigerant discharged from the compressor can be adjusted to both the type by operating or stopping and the type by the number of revolutions of the compressor. Since it is effective and does not stop the compressor, it is possible to continuously flow the refrigerant to the operating indoor unit B, and continuous air conditioning can be performed.

FIG. 19 is a flow chart showing another control method of this embodiment. Step S109
By adding, the operation time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Embodiment 11 FIG. The eleventh embodiment of the present invention will be described below with reference to the drawings. FIG. 20 is a refrigerant circuit diagram of an air conditioner according to Embodiment 11 of the present invention. In the figure, 15a and 15b are the indoor heat exchanger 5 on the gas pipe side.
It is a valve provided between a and 5b and the distributor 8. FIG. 21 is a flow chart showing the control method according to the eleventh embodiment of the present invention.

When only the indoor unit B is cooled, the main body of the indoor unit A, which is stopped, is cooled by the refrigerant flowing through the heat exchanger. When a large amount of steam is generated under the stopped indoor unit A, the steam enters the inside of the stopped indoor housing to reach the dew point, dew and condense, but in the present embodiment, as shown in steps S111 to S115. In addition, when dew condensation occurs on the inner surface of the main body due to the water vapor, the dew condensation sensor 14 detects the dew condensation and the blower 12 of the indoor unit is operated at the same time as the valve 1
5a is closed and after a lapse of a predetermined time, the blower 12 is stopped and the valve 15 is opened, so that the operation of the blower 12 not only evaporates the condensed water, but also prevents the flow of the refrigerant to the heat exchanger, so that the condensation grows. Not only can it prevent dripping from the indoor unit, but it is also effective for adjusting the amount of refrigerant discharged from the compressor both for the type by operating or stopping and the type by the number of revolutions of the compressor. Since it does not stop, it is possible to continuously flow the refrigerant to the operating indoor unit B, and continuous air conditioning can be performed.

FIG. 22 is a flow chart showing another control method of this embodiment. Step S116
By adding, the operating time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Embodiment 12 FIG. The twelfth embodiment of the present invention will be described below with reference to the drawings. 20 is a refrigerant circuit diagram of an air conditioner according to Embodiment 12 of the present invention.
Reference numerals 5a and 15b are valves provided between the gas pipe side indoor heat exchangers 5a and 5b and the distribution unit 8. FIG. 23 is a flow chart showing the control method according to the twelfth embodiment of the present invention.

When only the indoor unit B is cooled, the main body of the indoor unit A, which is stopped, is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing to reach the dew point, dew and condense, but in the present embodiment, as shown in steps S121 to S128. When dew condensation occurs on the inner surface of the main body due to water vapor, the dew condensation sensor 14 detects dew condensation and closes the valve 15a, and when the dew condensation sensor detects dew condensation after a lapse of a predetermined time, the blower of the stopped indoor unit 12 is operated, and after a predetermined time has passed, the blower 12
Since the valve 15a is stopped and the valve 15a is opened, when the amount of attached dew condensation water is small, it is possible not only to prevent dripping from the indoor unit without operating the blower 12, but also to operate or stop the adjustment of the amount of refrigerant discharged from the compressor. Is effective for both the type according to (1) and the type depending on the number of revolutions of the compressor, and since the rotation of the compressor is not stopped, it is possible to continuously flow the refrigerant to the operating indoor unit B, and continuous air conditioning can be performed.

FIG. 24 is a flow chart showing another control method of this embodiment. Step S129
With the addition of the
It can be adjusted optimally by sensing, and power consumption can be reduced.

Embodiment 13 FIG. The thirteenth embodiment of the present invention will be described below with reference to the drawings. 25 is a refrigerant circuit diagram of an air conditioner according to a thirteenth embodiment of the present invention.
Reference numerals 6a and 16b are bypass circuits provided so that the refrigerant does not flow into the indoor heat exchanger, and 17a and 17b are bypass valves that open and close the bypass circuit. FIG. 26 is a flow chart showing the control method according to the thirteenth embodiment of the present invention.

When only the indoor unit B is cooled, the main body of the indoor unit A, which is stopped, is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing to reach the dew point and condense and drip, but in the present embodiment, as shown in steps S131 to S135. When dew condensation occurs on the inner surface of the main body due to water vapor, the dew condensation sensor 14 senses the dew condensation and opens the bypass valve 17a at the same time as the operation of the blower 12 of the indoor unit. Blower 12 to close the
Not only evaporation of dew condensation water but also changing the flow of refrigerant to reduce the flow rate of refrigerant to the indoor heat exchanger, it is possible to prevent the growth of dew condensation and prevent dripping from the indoor unit. , The amount of refrigerant discharged from the compressor is effective for both the type by operation or stop and the type by rotation speed of the compressor, and the compressor is not stopped, so that the refrigerant is continuously supplied to the indoor unit B in operation. Therefore, continuous air conditioning is possible.

FIG. 27 is a flow chart showing another control method of this embodiment. Step S136
By adding, the operation time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

Fourteenth Embodiment The fourteenth embodiment of the present invention will be described below with reference to the drawings. FIG. 25 is a refrigerant circuit diagram of an air conditioner according to a fourteenth embodiment of the present invention. In the figure, 16a and 16b are bypass circuits provided so that the refrigerant does not flow into the indoor heat exchanger, and 17a and 17b are bypass circuits. It is a bypass valve that opens and closes the circuit. FIG. 28 is a flow chart showing the control method according to the fourteenth embodiment of the present invention.

When only the indoor unit B is operated for cooling, the main body of the indoor unit A which is stopped is cooled by the refrigerant flowing through the heat exchanger. When a large amount of water vapor is generated under the stopped indoor unit A, the water vapor enters the stopped indoor housing to reach the dew point and condense and drip, but in the present embodiment, as shown in steps S141 to S148. When the dew condensation occurs on the inner surface of the main body due to water vapor, the dew condensation sensor 14 detects the dew condensation and opens the bypass valve 17a, and when the dew condensation sensor 14 detects the dew condensation after a predetermined time, the indoor unit is stopped. The blower 12 of
Since the blower 12 is stopped and the bypass valve 17a is closed, when the amount of attached dew condensation water is small, it is possible to prevent dripping from the indoor unit without operating the blower 12,
The adjustment of the amount of refrigerant discharged from the compressor is effective for both the type by operating or stopping and the type by the number of revolutions of the compressor. Since the rotation of the compressor is not stopped, the refrigerant is continuously supplied to the indoor unit B in operation. It is possible to flow and continuous air conditioning is possible.

FIG. 29 is a flow chart showing another control method of this embodiment. Step S149
By adding, the operation time of the indoor blower can be optimally adjusted by sensing the dew condensation sensor 14 and power consumption can be reduced.

[0072]

As described above, the separation type air conditioner according to the inventions of claims 1 to 26 has the effect of preventing the dew condensation water from dripping from the stopped indoor unit and reducing the power consumption.

[Brief description of drawings]

FIG. 1 is a sectional side view of a separation type air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart of the separation type air conditioner according to the first embodiment of the present invention.

FIG. 3 is a flowchart of a separation type air conditioner according to Embodiment 2 of the present invention.

FIG. 4 is a flow chart diagram of a separation type air conditioner according to Embodiment 3 of the present invention.

FIG. 5 is a flow chart diagram of a separation type air conditioner according to Embodiment 3 of the present invention.

FIG. 6 is a flowchart of a separation type air conditioner according to Embodiment 4 of the present invention.

FIG. 7 is a flow chart diagram of a separation type air conditioner according to Embodiment 4 of the present invention.

FIG. 8 is a flowchart of a separation type air conditioner according to Embodiment 5 of the present invention.

FIG. 9 is a flowchart of a separation type air conditioner according to Embodiment 5 of the present invention.

FIG. 10 is a flow chart diagram of a separation type air conditioner according to Embodiment 6 of the present invention.

FIG. 11 is a flowchart of a separation type air conditioner according to Embodiment 6 of the present invention.

FIG. 12 is a flowchart of a separation type air conditioner according to Embodiment 7 of the present invention.

FIG. 13 is a flow chart diagram of a separation type air conditioner according to Embodiment 7 of the present invention.

FIG. 14 is a flow chart diagram of a separation type air conditioner according to Embodiment 8 of the present invention.

FIG. 15 is a flowchart of a separation type air conditioner according to Embodiment 8 of the present invention.

FIG. 16 is a flowchart of a separation type air conditioner according to Embodiment 9 of the present invention.

FIG. 17 is a flowchart of a separation type air conditioner according to Embodiment 9 of the present invention.

FIG. 18 is a flow chart diagram of a separation type air conditioner according to Embodiment 10 of the present invention.

FIG. 19 is a flowchart of a separation type air conditioner according to Embodiment 10 of the present invention.

FIG. 20 is a refrigerant circuit diagram of a separation type air conditioner according to Embodiment 11 of the present invention.

FIG. 21 is a flowchart of a separation type air conditioner according to Embodiment 11 of the present invention.

FIG. 22 is a flow chart diagram of a separation type air conditioner according to an eleventh embodiment of the present invention.

FIG. 23 is a flow chart diagram of a separation type air conditioner according to a twelfth embodiment of the present invention.

FIG. 24 is a flow chart diagram of a separation type air conditioner according to a twelfth embodiment of the present invention.

FIG. 25 is a refrigerant circuit diagram of a separation type air conditioner according to Embodiment 13 of the present invention.

FIG. 26 is a flow chart of a separation type air conditioner according to Embodiment 13 of the present invention.

FIG. 27 is a flow chart of a separation type air conditioner according to Embodiment 13 of the present invention.

FIG. 28 is a flow chart diagram of a separation type air conditioner according to a fourteenth embodiment of the present invention.

FIG. 29 is a flow chart of a separation type air conditioner according to a fourteenth embodiment of the present invention.

FIG. 30 is a refrigerant circuit diagram of a conventional separation type air conditioner.

FIG. 31 is a sectional side view of a conventional separation type air conditioner.

[Explanation of symbols]

1 compressor, 4a, 4b electronic expansion valve, 5 indoor heat exchanger, 9 indoor unit, 12 indoor blower, 14 condensation sensor, 15a, 15b valve, 16a, 16b bypass circuit, 17a, 17b bypass pulp.

Claims (26)

[Claims] 1. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a dew condensation sensor is provided in the indoor unit, and the dew condensation sensor of the stopped indoor unit detects dew condensation. In this case, the separated air conditioner is characterized in that the blower of the stopped indoor unit is operated for a predetermined time (T1). 2. When the dew condensation sensor of the stopped indoor unit detects dew condensation, the blower of the stopped indoor unit is operated until the dew sensor no longer detects dew condensation. Separate air conditioner. 3. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a dew condensation sensor is provided in the indoor unit, and the dew condensation sensor of the stopped indoor unit detects dew condensation. In this case, when the blower of the stopped indoor unit is operated for a predetermined time (T2) and then the dew condensation sensor of the indoor unit again detects dew condensation, the rotation speed of the blower of the indoor unit is increased for a predetermined time. (T3) A separation type air conditioner which is operated. 4. After increasing the rotation speed of the blower of the indoor unit,
The separation type air conditioner according to claim 3, wherein when the dew condensation sensor does not detect dew condensation, the blower of the indoor unit is stopped. 5. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a dew condensation sensor is provided in the indoor unit, and the dew condensation sensor of the stopped indoor unit detects dew condensation. In this case, when the blower of the stopped indoor unit is operated for a predetermined time (T4) and then the dew condensation sensor of the indoor unit again detects dew condensation, the rotation speed of the blower of the indoor unit is increased for a predetermined time. (T5) When the indoor unit is operated and the dew condensation sensor of the indoor unit detects dew condensation, the rotation speed of the blower of the indoor unit is reduced to operate for a predetermined time (T6). . 6. The separation type air conditioner according to claim 5, wherein, when the dew condensation sensor does not detect dew condensation after the rotation speed of the blower of the indoor unit is reduced, the blower of the indoor unit is stopped. . 7. The separation type air conditioner according to claim 1, wherein the compressor is stopped simultaneously with the operation of the blower of the indoor unit which is stopped. 8. When the dew condensation sensor stops detecting dew condensation after the compressor is stopped at the same time as the operation of the blower of the stopped indoor unit, the blower of the stopped indoor unit is stopped and the compressor is stopped at the same time. 8. The separation type air conditioner according to claim 7, wherein the operation is restarted. 9. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a dew condensation sensor is provided in the indoor unit, and the dew condensation sensor of the stopped indoor unit detects dew condensation. If the compressor is stopped and the dew sensor of the stopped indoor unit detects dew condensation after a lapse of a predetermined time (T7), the blower of the stopped indoor unit is operated, and a predetermined time (T8) elapses. After that, the blower of the stopped indoor unit is stopped and the operation of the compressor is restarted. 10. When the dew condensation sensor stops detecting dew condensation after operating the blower of the stopped indoor unit, the blower of the stopped indoor unit is stopped and the operation of the compressor is restarted. The separation type air conditioner according to claim 9. 11. The separation type air conditioner according to claim 1, wherein the operating frequency of the compressor is reduced simultaneously with the operation of the blower of the indoor unit which is stopped. 12. When the dew condensation sensor stops detecting dew condensation after the operating frequency of the compressor is reduced simultaneously with the operation of the blower of the stopped indoor unit, the blower of the stopped indoor unit is stopped at the same time. The separation type air conditioner according to claim 11, wherein the operating frequency of the compressor is increased. 13. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a dew condensation sensor is provided in the indoor unit, and the dew condensation sensor of the stopped indoor unit detects dew condensation. In the case where the operating frequency of the compressor is lowered and the dew sensor of the stopped indoor unit detects dew condensation after a predetermined time (T9) has elapsed, the blower of the stopped indoor unit is operated for a predetermined time ( After a lapse of T10), the blower of the stopped indoor unit is stopped and the operating frequency of the compressor is increased, and the separation type air conditioner is characterized. 14. When the dew condensation sensor stops detecting dew condensation after operating the blower of the stopped indoor unit, the blower of the stopped indoor unit is stopped and the operating frequency of the compressor is increased. The method according to claim 1, wherein
3. The separation type air conditioner described in 3. 15. The electronic expansion valve for an operating indoor unit is opened simultaneously with the operation of the blower of the indoor unit being stopped, and the electronic expansion valve for the indoor unit being stopped is closed.
Separated air conditioner described. 16. A dew condensation sensor detects dew condensation after opening an electronic expansion valve for the indoor unit that is operating at the same time as operating the blower of the indoor unit that is stopped and closing the electronic expansion valve of the indoor unit that is stopped. 16. The separation type air conditioner according to claim 15, wherein when it is stopped, the blower of the stopped indoor unit is stopped and the electronic expansion valve is returned to the normal control at the same time. 17. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a dew condensation sensor is provided in the indoor unit, and the dew condensation sensor of the stopped indoor unit detects dew condensation. In the case, while opening the electronic expansion valve for the indoor unit in operation, close the electronic expansion valve of the indoor unit in the stop,
When the dew condensation sensor of the stopped indoor unit detects dew condensation after a predetermined time (T11) has elapsed, the blower of the stopped indoor unit is operated, and after the predetermined time (T12) has elapsed, the stopped indoor unit A separation type air conditioner characterized by stopping the blower and returning the electronic expansion valve to normal control. 18. When the dew condensation sensor stops detecting dew condensation after operating the blower of the stopped indoor unit, the blower of the stopped indoor unit is stopped and the electronic expansion valve is returned to normal control. The separation type air conditioner according to claim 17, characterized in that. 19. A valve is provided between the indoor heat exchanger on the gas pipe side and the distribution unit, and when the dew condensation sensor of the stopped indoor unit detects dew condensation, the blower of the stopped indoor unit is operated at the same time. The separate type air conditioner according to claim 1, wherein the valve is closed. 20. When the dew condensation sensor stops detecting dew condensation after the valve is closed at the same time when the blower of the stopped indoor unit is operated, the blower of the stopped indoor unit is stopped and the valve is opened at the same time. Claim 1 characterized by the above.
9. A separation type air conditioner according to item 9. 21. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a condensation sensor is provided in the indoor unit, and a valve is provided between the indoor heat exchanger on the gas pipe side and the distribution unit. When the dew condensation sensor of the stopped indoor unit detects dew condensation, the valve is opened, and when the dew condensation sensor of the stopped indoor unit detects dew condensation after a predetermined time (T13) has passed, A separation type air conditioner characterized by operating a blower of a stopped indoor unit, stopping the blower of the stopped indoor unit after a lapse of a predetermined time (T14), and closing the valve. 22. When the dew condensation sensor stops detecting dew condensation after operating the blower of the stopped indoor unit, the blower of the stopped indoor unit is stopped and the valve is closed. The separation type air conditioner according to claim 21. 23. A bypass circuit and a bypass valve of an indoor heat exchanger are provided, and when the dew condensation sensor of the stopped indoor unit detects dew condensation, the bypass valve is opened simultaneously with the operation of the blower of the stopped indoor unit. The separate type air conditioner according to claim 1, wherein 24. When the dew condensation sensor stops detecting dew condensation after operating the blower of the stopped indoor unit, the bypass valve is closed at the same time as stopping the blower of the stopped indoor unit. The separation type air conditioner according to claim 23. 25. In a separation type air conditioner in which a plurality of indoor units are connected to one outdoor unit, a dew condensation sensor is provided in the indoor unit, and a bypass circuit and a bypass valve of an indoor heat exchanger are provided and stopped. When the dew condensation sensor of the indoor unit inside detects dew condensation, the bypass valve is opened, and when the dew condensation sensor of the stopped indoor unit detects dew condensation after a predetermined time (T15) has passed, the A separation type air conditioner comprising: operating a blower of an indoor unit, stopping the blower of the stopped indoor unit after a lapse of a predetermined time (T16), and closing the bypass valve. 26. When the dew condensation sensor stops detecting dew condensation after operating the blower of the stopped indoor unit, the blower of the stopped indoor unit is stopped and the bypass valve is closed. The separation type air conditioner according to claim 25.