JP2001263712A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner in which the start-up time required for cooling and heating operation can be reduced, and a comfortable cool or warm wind can be obtained in a short time, thereby to attain an energy conservation and decrease in cost for operation. SOLUTION: The air conditioner is provided with a suction-air switchover means 34 an/or 35. The means selectively switches an air suction direction of a heat exchanger 27 and/or 29 to the outdoor or the indoor of a house, so that the heat exchanger 27 and/or 29 sucks air having a temperature near the control temperature for air conditioning, selecting from indoor and outdoor air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner suitable for cooling and heating, for example, a dressing room next to a bathroom.

[0002]

2. Description of the Related Art FIG. 6 is a side sectional view showing a conventional air conditioner disclosed in, for example, JP-A-1-95234.
In the figure, reference numeral 1 denotes a vanity vanity, and this vanity vanity 1
Is composed of a wash basin 2 and a dressing table 3. The dressing table 3 has a built-in indoor heat exchanger 4 and a cross fan 5 and has a mirror 6 which can be opened and closed on the front. Reference numeral 7 denotes an outdoor unit installed outdoors. The outdoor unit 7 includes a compressor 8 and an outdoor heat exchanger 9.
And the propeller fan 10, and the indoor heat exchanger 4
Through a refrigerant pipe 11. 12 is a suction port for room air provided at the lower part of the dressing table 3, 13 is an air outlet for room air provided at the upper part of the dressing table 3, and 14 is a wind direction changing plate provided at the air outlet 13. In addition, the wind direction changing plate 14 can be adjusted to rotate in the front-rear direction.

Next, the operation will be described. During the cooling operation, the indoor heat exchanger 4 functions as an evaporator, and the outdoor heat exchanger 9 functions as a condenser.
Is rotationally driven, the room air in the toilet room is sucked in from the suction port 12 below the dressing table 3 and heat is exchanged in the indoor heat exchanger 4.
It is sprayed on the human body from the upper outlet 13 in a spot manner. In the heating operation, the indoor heat exchanger 4 functions as a condenser and the outdoor heat exchanger 9 functions as an evaporator, contrary to the cooling operation, and the cross fan 5 is driven to rotate in this state. As a result, the room air in the bathroom restroom is sucked from the suction port 12 below the dressing table 3 and the indoor heat exchanger 4
The hot air after the heat exchange is blown to the human body from the outlet 13 above the dressing table 3 in a spot manner.

[0004]

Since the conventional air conditioner is constructed as described above, the indoor heat exchanger 4 is used as an evaporator and the outdoor heat exchanger 9 is used as a condenser during cooling operation, and the reverse is used during heating operation. The indoor heat exchanger 4 is used as a condenser and the outdoor heat exchanger 9
Can be switched so as to function as an evaporator. However, in both the cooling operation and the heating operation, the suction air of the indoor heat exchanger 4 is only the indoor air of the washroom and the outdoor heat Since the intake air of the exchanger 9 is only outdoor air, there is a problem that the startup speed during the cooling / heating operation is slow. That is, during the cooling operation in the summer, the indoor heat exchanger 4 functions as an evaporator by sucking the indoor air in the toilet room, but in this case, the room temperature in the toilet room is not necessarily lower than the outdoor temperature. In particular, in the case of a washroom adjacent to the bathroom, the room is hot and humid due to heat radiation from the human body after bathing, and when the cooling operation is started under such hot and humid conditions, Since the indoor air is sucked into the indoor heat exchanger 4, it takes a long time to lower the temperature to a comfortable temperature even if the blown air is blown in a spot manner on the human body,
Further, even during the heating operation in winter, since the outdoor heat exchanger 9 functioning as an evaporator sucks in the cold outdoor air, when the heating operation is started after bathing or the like,
It took time for the blown air to reach a comfortable temperature.
Therefore, it is conceivable to start the cooling operation or the heating operation in advance during bathing, but in this case, there is a problem that the operation cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and can increase the start-up speed at the start of operation of an air conditioner, and can blow comfortable conditioned air in a short time. It is another object of the present invention to provide an air conditioner capable of saving energy and reducing operating costs.

Another object of the present invention is to provide an air conditioner capable of increasing the start-up speed at both the start of the cooling operation and the start of the heating operation.

A further object of the present invention is to provide an air conditioner capable of automatically controlling the air suction direction of a heat exchanger to be outdoors or indoors according to the temperature difference between outdoor air and indoor air. I do.

It is a further object of the present invention to provide an air conditioner capable of efficiently performing air conditioning in a dressing room next to a bathroom.

Further, the present invention provides an air conditioner capable of automatically controlling the air suction direction of a heat exchanger to be outdoors or indoors according to a temperature difference between outdoor air and indoor air in a bathroom or a dressing room. The purpose is to obtain.

[0010]

An air conditioner according to the present invention is provided with a heat exchanger of an air conditioning refrigeration cycle, communicates the air suction side of the heat exchanger with the outside and the inside of the room, And a wind path for blowing the conditioned air after heat exchange by the heat exchanger into the room, and the heat exchanger sucks air closer to the air conditioning control temperature among the outdoor air and the indoor air when the air conditioner is operating. As described above, the air conditioner is provided with suction air switching means for selectively switching the air suction direction of the heat exchanger to outdoor or indoor according to the temperature difference between outdoor air and indoor air.

[0011] The suction air switching means of the air conditioner according to the present invention is characterized in that the air-conditioner provided with a refrigeration cycle capable of switching between heating and cooling is used for heat exchange between the outdoor air and the indoor air on the low-temperature side. The air suction direction of the heat exchanger according to the temperature difference between the outdoor air and the indoor air so that the heat exchanger sucks the high-temperature side air of the outdoor air and the indoor air during the heating operation. It is designed to selectively switch between outdoor and indoor.

[0012] The suction air switching means of the air conditioner according to the present invention includes an outside air temperature sensor for detecting an outdoor air temperature, an indoor temperature sensor for detecting an indoor air temperature, and each of the outdoor air temperature sensor and the indoor temperature sensor. Control means for inputting a temperature detection signal and switching the air suction direction of the heat exchanger to outdoor or indoor based on the temperature detection signal.

[0013] The suction air switching means of the air conditioner according to the present invention is provided in the air suction side air passage of the heat exchanger, and selectively switches the air suction side air passage according to the temperature difference between outdoor air and indoor air. It consists of a damper for switching.

An air conditioner according to the present invention comprises a heat exchanger for a washroom and a dressing room, which is capable of sucking outdoor air and indoor air in a washroom, and a heat exchanger for changing the air suction direction of the washroom and the washroom. A first damper for switching to a room, a bathroom-side heat exchanger capable of sucking outdoor air and room air in the bathroom, a second damper for switching the air suction direction of the bathroom-side heat exchanger to outdoor or bathroom, and cooling. During operation, the first damper is switched to operate so that the low-temperature side air of the outdoor air and the room air in the dressing room is sucked into the washroom-side heat exchanger, and the outdoor air and the room air in the bathroom are used during the heating operation. Control means for switching and operating the second damper so that the bathroom-side heat exchanger sucks the high-temperature side air.

The control means of the air conditioner according to the present invention includes an indoor air temperature sensor and an outdoor temperature sensor for detecting the indoor air temperature in the dressing room and bathroom, and inputs a temperature detection signal from these temperature sensors. The first and / or second dampers are switched based on an input signal.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a schematic structural explanatory view showing an air conditioner according to Embodiment 1 of the present invention.
Reference numeral 21 denotes a bathroom undressing room, reference numeral 22 denotes a bathroom adjacent to the bathroom undressing room 21 via an opening / closing door (not shown), and reference numeral 23 denotes an air passage (hereinafter, referred to as a first air passage) of the above-described bathroom undressing room 21 system. The first air passage 23 has an outdoor suction port 23a, an indoor suction port 23b opened to the washroom undressing room 21, and an indoor air outlet 23c. Reference numeral 24 denotes an air passage of the bathroom 22 system (hereinafter, referred to as a second air passage). The second air passage 24 includes an outdoor suction port 24a and an outdoor air outlet 24b, and a ventilation port 24c opened to the bathroom 22. And
The first and second air passages 23 and 24 are formed of ducts arranged behind the ceiling.

Reference numeral 25 denotes a compressor; 26, a four-way valve; 27, a heat-exchanger on the side of the washing / undressing room disposed in the first air passage 23;
Reference numeral 8 denotes a capillary for reducing pressure, 29 denotes a bathroom-side heat exchanger disposed in the second air passage 24, and these are connected by a refrigerant pipe 30 to constitute a refrigeration cycle capable of performing a cooling / heating switching operation. I have. 31 is disposed in the first air passage 23 and located on the indoor air outlet 23c side with respect to the washroom undressing room side heat exchanger 27, and 32 is disposed in the second air passage 24. The bathroom-side blower 33 is located closer to the outdoor outlet 24b than the bathroom-side heat exchanger 29, and a ventilation fan 33 is disposed in the ventilation port 24c.

Reference numeral 34 denotes a first damper disposed on the suction side of the heat exchanger 27 on the washroom-undressing room side in the first air passage 23. The first damper 34 is a heat exchanger on the washroom-undressing room side. This serves as suction air switching means on the washroom undressing room side for selectively switching the air suction direction of the vessel 27 to either the outdoor suction port 23a or the indoor suction port 23b. 35
Is a second damper disposed at the opening / closing position of the ventilation port 24c in the second air passage 24, and the second damper 35 changes the air suction direction of the bathroom-side heat exchanger 29 to the outdoor suction port. This serves as a bathroom-side suction air switching unit that selectively switches to one of the port 24a and the ventilation port 24c.

Reference numeral 36 denotes a first indoor temperature sensor for detecting the indoor air temperature of the washing / undressing room 21, 37 denotes a second indoor temperature sensor for detecting the indoor air temperature of the bathroom 22, and 38 denotes an outside air temperature for detecting the outdoor air temperature. It is a sensor.

FIG. 2 is a block diagram showing a control system of the air conditioner of FIG. 1. In FIG. 2, reference numeral 40 denotes an operation unit of the air conditioner, 41 denotes control means for controlling the operation of the air conditioner,
The control means 41 receives an operation signal from the operation section 40 and temperature detection signals from the first and second indoor temperature sensors 36 and 37 and the outside air temperature sensor 38, and based on the input signals, the compressor 25 And the four-way valve 26, the washing-room undressing-room-side blower 31, the bathroom-side blower 32, and the first and second dampers 34 and 35.

That is, the control means 41 includes the operation unit 4
In the cooling operation mode or the heating operation mode, the compressor 25, the four-way valve 26, the blowers 31, 3 based on the input signal from 0.
2 and a temperature difference (comparison temperature) between the indoor air temperature and the outdoor air temperature of the washroom 21 and the bathroom 22 based on the input signals from the sensors 36, 37 and 38, respectively. Of the first and second dampers 34 and 35.
The first damper 34 is operated so that the low-temperature side air of the outdoor air and the indoor air is sucked into the washroom-undressing room side heat exchanger 27 during the cooling operation, and the outdoor air is discharged during the heating operation. And a function of operating the second damper 35 so that the bathroom-side heat exchanger 29 sucks the high-temperature side air of the room air.

Therefore, the control means 41 includes first and second indoor temperature sensors 36 and 37 and an outside air temperature sensor 38, and the outdoor air and indoor air based on the input signals from the temperature sensors 36, 37 and 38 are provided. According to the temperature difference of the air, the air suction direction (air suction side air passage) of the washroom-side undressing room side heat exchanger 27 and the bathroom side heat exchanger 29 is selectively switched to outdoor or indoor.

Next, the operation will be described. When the control means 41 inputs a start signal of the cooling operation from the operation section 40, the control means 41 detects the room temperature detection signal of the washroom 21 from the first room temperature sensor 36 and detects the outside air temperature from the outside air temperature sensor 38. Each of the signals is input, and it is determined which of the room temperature and the outside air temperature of the washroom undressing room 21 is low, and when it is determined that the outside air temperature is low,
According to the output control signal from the control means 41, the first damper 34 and the second damper 35 are respectively displaced to the positions shown in FIG.

That is, the first damper 34 is automatically switched to a damper position in which the air suction side of the heat exchanger 27 on the washroom-undressing room side communicates with the outdoor suction port 23a and shuts off the indoor suction port 23b. The second damper 35 is automatically switched to a damper position in which the outdoor air inlet 24a and the outdoor air outlet 24b of the second air passage 24 communicate with each other by blocking the ventilation port 24c. At the same time as the damper switching control, the compressor 25, the four-way valve 26, and the blowers 31, 32 are driven by the control signal from the control means 41. As a result, the washroom-undressing-room-side blower 31 sucks outdoor air from the outdoor suction port 23a of the first air passage 23 and guides the outdoor air to the washroom-undressing-room-side heat exchanger 27, and the bathroom-side blower 32 outputs the second air passage. The outdoor air sucked in through the bathroom-side heat exchanger 29 from the outdoor suction port 24a is exhausted from the outdoor outlet 24b as it is. In this state, the high-temperature and high-pressure refrigerant gas compressed by the compressor 25 sequentially flows through the four-way valve 26, the bathroom-side heat exchanger 29, and the capillary tube 28, and enters the washroom-clothing room-side heat exchanger 27.

Here, the heat exchanger 27 on the washroom-undressing room side draws in outdoor air having a lower temperature than the indoor air as described above. It absorbs heat from outdoor air and evaporates, and returns to the compressor 25 through the four-way valve 26. On the other hand, the cool air after the heat exchange by the washroom undressing room side heat exchanger 27 is sent to the washroom undressing room 21 from the indoor outlet 23c. Therefore, compared to the case where the washroom-undressing-room-side heat exchanger 27 draws in the room air having a higher temperature than the outdoor air and blows heat-exchanged cool air to the washroom-undressing room 21 during the cooling operation, the cooling operation at the start of the cooling operation is performed. Startup speed is faster.

The above is the case of the cooling operation when the outdoor air is lower in temperature than the indoor air in the dressing room 21. Conversely, in the cooling operation when the indoor air is lower than the outdoor air. During operation, the first damper 34 is automatically switched to the damper position shown in FIG. 3 by the output control signal from the control means 41, and the second damper 35 is maintained in the state shown in FIG. Therefore, the first damper 34
The air suction side of the washroom undressing room side heat exchanger 27 communicates with the indoor suction port 23b, and is held at a damper position where the outdoor suction port 23a is blocked.

In this state, the heat exchanger 27 on the washroom-undressing room side
However, the room air in the washroom undressing room 21 which is lower in temperature than the outdoor air is sucked through the indoor suction port 23b to exchange heat, and the cold air after the heat exchange is transferred from the indoor outlet 23c to the washroom undressing room 21 as in normal cooling operation. Blow. Therefore, as compared with the case where the washroom-undressing-room-side heat exchanger 27 draws in outdoor air having a higher temperature than the room air and blows heat-exchanged cool air to the washroom-undressing room 21 during the cooling operation, the startup during the cooling operation is performed. Speed increases. In the second air passage 24, the outdoor air sucked from the outdoor inlet 24a through the bathroom-side heat exchanger 29 is exhausted from the outdoor outlet 24b.

FIGS. 4 and 5 are explanatory diagrams of the operation during the heating operation. During the heating operation, the four-way valve 26 is controlled by an output control signal from the control unit 41 based on an operation signal from the operation unit 40.
Is switched to drive the compressor 25 and the blowers 31, 32. At the same time, the control means 41 inputs temperature detection signals from the second indoor temperature sensor 37 and the outside air temperature sensor 38, compares the temperature of the indoor air in the bathroom 22 with the temperature of the outdoor air, and determines which is the higher temperature. Judge.

If the result of the determination is that the room air in the bathroom 22 is hotter than the outdoor air, the control means 4
1, the first and second dampers 3
4, 35 are switched to the positions shown in FIG. That is, the first damper 34 switches the suction side of the washroom undressing room side heat exchanger 27 to a damper position that shuts off the outdoor suction port 23a of the first air passage 23 and communicates with the indoor suction port 23b, The second damper 35 opens the ventilation port 24c, communicates the air suction side of the bathroom-side heat exchanger 29 with the ventilation port 24c, and shuts off the outdoor suction port 24a of the second air passage 24. Switches to the damper position.

Therefore, the blower 31 on the washroom undressing room side sends the room air in the washroom undressing room 21 to the indoor suction port 2 of the first air passage 23.
3b through the heat exchanger 27 on the washroom undressing room side,
An air circulating flow returning from the indoor outlet 23c into the washroom undressing room 21 is generated, and the bathroom-side blower 32 converts the air in the bathroom 22 blown from the ventilation fan 33 into the bathroom-side heat exchanger 29.
To generate an air flow that is sucked in through the air outlet and exhausted from the outdoor outlet 24b.

At this time, in the refrigeration cycle, the high-temperature and high-pressure refrigerant gas compressed by the compressor 25 is supplied to the four-way valve 26 →
After passing through the heat exchanger 27 on the washroom-undressing room side and flowing into the capillary tube 28 to be decompressed, it enters the heat exchanger 29 on the bathroom side. here,
Since the bathroom-side heat exchanger 29 draws in the indoor air of the bathroom 22 which is higher in temperature than the outdoor air, the bathroom-side heat exchanger 2
The refrigerant that has entered 9 returns to the compressor 25 through the four-way valve 26 after absorbing and condensing heat from the room air,
The compressor 25 passes through the four-way valve 26 again and enters the washroom-side dressing room side heat exchanger 27.

The heat exchanger 27 on the washroom-undressing room side sucks the room air in the washroom-undressing room 21 as described above.
The refrigerant entering the washroom-undressing room side heat exchanger 27 radiates heat to the room air, whereby the room air is efficiently heated. The warm air that has been efficiently heat-exchanged in the washroom-undressing room side heat exchanger 27 in this way is sent to the washroom undressing room 21 from the indoor outlet 23c. Therefore, during the heating operation, the bathroom-side heat exchanger 29 and the washroom-clothing room-side heat exchanger 27 are connected to the bathroom 2.
The rising speed at the start of the heating operation of the washroom undressing room 21 is faster than in the case where the outdoor air having a lower temperature than the indoor air of No. 2 is sucked and the hot air after the heat exchange is blown to the washbasin undressing room 21.

If the room air in the bathroom 22 is lower than the outdoor air during the heating operation, the signals from the second indoor temperature sensor 37 and the outside air temperature sensor 38 for detecting the air temperature are provided. 4, the first damper 34 is held at the same damper position as in FIG. 4, and the second damper 35 is closed at the position shown in FIG. Exchanger 2
9 is switched to the damper position communicating with the outdoor suction port 24a of the second air path 24.

As a result, the refrigerant entering the bathroom-side heat exchanger 35 absorbs heat from the outdoor air having a higher temperature than the room air in the bathroom 22, and the refrigerant having absorbed the heat is supplied to the four-way valve 26 → the compressor 2
5 → Heat exchanger 27 on the dressing room side through the four-way valve 26
In order to enter, the heat exchanger 27 on the washroom changing room side
The room air sucked from 1 is heated. In this way, the warm air that has been efficiently heat-exchanged in the washroom-undressing room-side heat exchanger 27 is sent to the washroom undressing room 21 from the indoor outlet 23c. Therefore, during the heating operation, the bathroom-side heat exchanger 29 sucks in indoor air that is lower in temperature than the outdoor air and does not exchange heat, so that the start-up speed at the start of the heating operation of the washroom 21 is increased.

According to the first embodiment described above, the temperatures of the indoor air and the outdoor air in each of the dressing room 21 and the bathroom 22 are detected, and during the cooling operation, the low temperature side of the indoor air and the outdoor air is detected. The air in the washroom and the room-side heat exchanger 27
In response to the output control signal from the control means 41, the first (washing-room undressing room side) damper 34 is switched and operated, and during the heating operation, the high-temperature side air of the room air and the outdoor air is changed to the bathroom side. As the heat exchanger 29 sucks in,
Since the second (bathroom side) damper 35 is configured to be switched by the output control signal from the control means 41, the start-up speed should be increased at both the start of the cooling operation and the start of the heating operation. Can be. For this reason, it is possible to blow cold or warm air having a comfortable temperature into the washroom undressing room 21 in a short time, and it is possible to reduce operating costs. In addition, in each of the cooling operation and the heating operation, the sensors 36, 37, and 38 are used.
The temperature of the indoor air and the temperature of the outdoor air are detected by using the output control signal from the control means 41 based on the detection signal, and the air path switching dampers 34, 35 are automatically switched to operate. There is an effect that the air suction direction of the air conditioner 29 can be reliably switched to the outdoor or indoor (the washroom 21 or the bathroom 22).

Embodiment 2 In the first embodiment, the washroom 21 adjacent to the bathroom 22 is described as the room to be air-conditioned. However, the room to be air-conditioned does not need to be specified as the washroom 21, and is a separate room away from the bathroom 22. In this case, the same operation and effect as in the first embodiment can be obtained.

Embodiment 3 In the first embodiment, the bathroom-side heat exchanger 29 and the blower 32 of this system are connected to the air passage 2.
4, but without the second air passage 24 and the second damper 35, and the bathroom-side heat exchanger 29
In addition, the blower 32 may be arranged outdoors as an outdoor unit. In this case, the first indoor temperature sensor 36 is used as an indoor temperature sensor of the room to be air-conditioned, and the air-conditioning is performed by the indoor temperature sensor 36 and the outdoor air temperature sensor 38. By detecting the indoor air temperature and the outdoor air temperature of the target room and switching the damper 34 by an output control signal from the control means 41 based on the temperature detection signal, the indoor air of the room to be air-conditioned and the outdoor The air suction direction of the heat exchanger 27 can be switched between indoor and outdoor so that the heat exchanger 27 sucks the air on the low temperature side of the air.

Therefore, also in this case, the same effects as those of the first embodiment can be obtained during the cooling operation. During the heating operation, the heat exchanger 27 may draw in the air on the high-temperature side of the indoor air and the outdoor air in the room to be air-conditioned. In winter, the outdoor air usually has a lower temperature. There is a slight effect compared to the case where only air is sucked.

Embodiment 4 In the above-described first to third embodiments, an air conditioner capable of switching between cooling and heating operations for a dressing room has been described. However, an air conditioner dedicated to cooling operation may be used. The room is not necessarily specified as a washroom. In short, the air conditioner according to the present invention includes the heat exchangers 27 and / or 29 of the refrigeration cycle for air conditioning,
Providing air ducts 23 and / or 24 having a duct configuration that communicates the air suction side of 7 and / or 29 with the outside and the indoor;
The air passages 23 and / or 24 are provided with the heat exchangers 27 and / or 29 so that the air closer to the air-conditioning control temperature of the outdoor air and the indoor air is sucked by the heat exchangers 27 and / or 29 during the operation of the air conditioner. What is necessary is just to have the structure provided with dampers 34 and / or 35 as suction air switching means for switching the air suction direction between outdoor and indoor. With the air conditioning having such a configuration, the startup speed at the start of operation can be increased.

[0040]

As described above, according to the present invention, the air suction side air path of the heat exchanger of the air conditioning refrigeration cycle is communicated between the outside and the room, and the air suction side air path is At the start, suction air switching means for selectively switching the air suction direction of the heat exchanger to outdoor or indoor so that the heat exchanger sucks air closer to the air-conditioning control temperature out of outdoor air and indoor air. With such a configuration, the air (outdoor air or indoor air) that improves the air conditioning efficiency according to the temperature difference between the outdoor air and the indoor air can be selectively sucked into the heat exchanger when the air conditioner starts operating. Thus, the start-up speed at the start of the operation of the air conditioner can be increased, comfortable conditioned air can be blown in a short time, and energy saving and operation cost can be reduced. There is an effect that.

According to the present invention, in an air conditioner capable of switching between cooling and heating, in the cooling operation, the low-temperature side air of the outdoor air and the indoor air is sucked into the heat exchanger of the refrigeration cycle, and the outdoor unit is heated during the heating operation. Since the air on the high-temperature side of the air and the room air is sucked into the heat exchanger, the start-up speed can be increased both at the start of the cooling operation and at the start of the heating operation. It is possible to supply comfortable conditioned air in a short time, and it is possible to save energy and reduce operating costs.

According to the present invention, the outdoor air temperature and the indoor air temperature are detected by the temperature sensor during the operation of the air conditioner, and the air suction direction of the heat exchanger is selectively switched to the outdoor or indoor according to the temperature detection signal. With this configuration, the air suction direction of the heat exchanger is automatically and selectively switched to outdoor or indoor according to the temperature difference between outdoor air and indoor air so that the startup speed at the start of air conditioner operation is increased. There is an effect that can be.

According to the present invention, as the suction air switching means for selectively switching the air suction side air passage of the heat exchanger between the outdoor air and the indoor air according to the temperature difference between the outdoor air and the indoor air, Since the damper is provided in the suction side air passage, the air suction side air passage of the heat exchanger can be easily switched by the damper, so that the structure can be simplified.

According to the present invention, in the air conditioner capable of switching between cooling and heating operations in which the room to be air-conditioned is a dressing room, the heat exchanger of the refrigeration cycle is configured such that, during the cooling operation, the low-temperature side of the outdoor air and the indoor air is used. The air suction direction of the heat exchanger is set to outdoor or indoor according to the temperature difference between the outdoor air and the indoor air so that the air on the high temperature side of the outdoor air and the indoor air is sucked during the heating operation. Since the suction air switching means for selectively switching the air conditioner is provided, the start-up speed of the air conditioner can be increased at both the start of the cooling operation and the start of the heating operation of the washroom. In addition to being able to blow cool or warm air at a comfortable temperature in a short time to the room to be air-conditioned,
This has the effect of reducing operating costs.

According to the present invention, the control means includes an indoor air temperature sensor and an outdoor temperature sensor for detecting the indoor air temperature in the dressing room and the bathroom, and inputs a temperature detection signal from these temperature sensors and inputs the signals. Since the first and / or second damper is configured to be switched and operated based on the signal, the air suction direction of the heat exchanger is set to the outdoor according to the temperature difference between the outdoor air and the indoor air in the bathroom or the dressing room. Alternatively, the automatic switching control can be selectively performed indoors.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram showing a control system of the air conditioner of FIG.

FIG. 3 is an operation explanatory diagram of the air conditioner according to Embodiment 1 of the present invention during a cooling operation.

FIG. 4 is an operation explanatory diagram during a heating operation of the air conditioner according to Embodiment 1 of the present invention.

FIG. 5 is an operation explanatory diagram of the air conditioner according to Embodiment 1 of the present invention during a heating operation.

FIG. 6 is a side sectional view showing a conventional air conditioner.

[Explanation of symbols]

21 washroom, 22 bathroom, 23 first airway, 2
3a Outdoor inlet, 23b Indoor inlet, 23c Indoor outlet, 24 Second air path, 24a Outdoor inlet, 24
b Outdoor outlet, 24c Vent, 25 Compressor, 26
4-way valve, 27 washroom undressing room side heat exchanger, 28 capillary tube,
29 bathroom side heat exchanger, 30 refrigerant pipe, 31 first blower, 32 second blower, 33 ventilation fan, 34
1st damper, 35 2nd damper, 36 1st room temperature sensor, 37 2nd room temperature sensor, 38 outside temperature sensor, 40 operation part, 41 control means.

Claims (6)

[Claims] 1. A heat exchanger of an air conditioning refrigeration cycle is disposed, and an air suction side of the heat exchanger communicates with an outdoor and an indoor,
And, an air passage for blowing the conditioned air after the heat exchange by the heat exchanger into the room, and provided in the air passage, the air closer to the air-conditioning control temperature of the outdoor air and the indoor air during the operation of the air conditioner, An air conditioner comprising suction air switching means for selectively switching the air suction direction of the heat exchanger to outdoor or indoor according to a temperature difference between outdoor air and indoor air so that the heat exchanger sucks in. 2. The suction air switching means, wherein a heat exchanger sucks air on a low temperature side of the outdoor air and the indoor air during a cooling operation of an air conditioner having a refrigeration cycle capable of performing a cooling / heating switching operation, and During the heating operation, the air suction direction of the heat exchanger is selected to be outdoor or indoor according to the temperature difference between the outdoor air and the indoor air so that the heat exchanger sucks the air on the high temperature side of the outdoor air and the indoor air. The air conditioner according to claim 1, wherein the air conditioner is switched. 3. The suction air switching means inputs a temperature detection signal from each of an outside air temperature sensor for detecting an outdoor air temperature, an indoor temperature sensor for detecting an indoor air temperature, and the outside air temperature sensor and the indoor temperature sensor. The air conditioner according to claim 1 or 2, further comprising control means for switching an air suction direction of the heat exchanger to outdoor or indoor based on the temperature detection signal. 4. The suction air switching means is provided in an air suction side air passage of the heat exchanger, and comprises a damper for selectively switching the air suction side air passage according to a temperature difference between outdoor air and indoor air. The air conditioner according to any one of claims 1 to 3, wherein: 5. An air conditioner for blowing conditioned air into a dressing room, wherein the outside air and the room air in the dressing room can be sucked, and the air in the dressing room side heat exchanger. A first damper for switching the suction direction to the outdoor or washroom, a bathroom-side heat exchanger capable of sucking outdoor air and room air in the bathroom, and switching the air suction direction of the bathroom-side heat exchanger to the outdoor or bathroom The second damper, the switching operation of the first damper so that the low-temperature side air of the outdoor air and the room air of the washroom undressing room is sucked by the washroom undressing room side heat exchanger during the cooling operation, and during the heating operation. An air conditioner, comprising: control means for switching and operating the second damper so that the bathroom-side heat exchanger sucks in the high-temperature side air of the outdoor air and the indoor air in the bathroom. 6. The control means includes an indoor air temperature sensor and an outdoor temperature sensor for detecting the indoor air temperature in the dressing room and bathroom, and inputs a temperature detection signal from these temperature sensors, based on the input signal. The air conditioner according to claim 5, wherein the first and / or second dampers are switched.