JPH05306822A - Air conditioner - Google Patents

Abstract

PURPOSE:To provide an air conditioner which reduces the size of an outdoor unit, reduces an installation area for the outdoor unit itself and an installation area required for ensurance of a blast route, improves exterior properties, and performs ventilation through simultaneous suction and exhaust in which incurring of a heat loss is reduced. CONSTITUTION:The size of an outdoor unit 1 is reduced in a way that a heat exchanger 105 and a blower 108 in an outdoor unit 1 are disposed to an indoor unit 2, and the size of the outdoor unit 1 is reduced. Simultaneously with reduction of an installation area for the outdoor unit 1 itself and an installation area required for ensurance of a blast route, exterior properties can be improved. Further, since the heat exchange elements are arranged in the indoor unit 2, ventilation through simultaneous suction and exhaust having a heat recovery function can take place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separate type air conditioner in which an outdoor unit and an indoor unit are separated.

[0002]

2. Description of the Related Art In recent years, in air conditioners for home use, a separate type in which an outdoor unit and an indoor unit are separated is mainly used, and among them, a housing type indoor unit in which the interior property is emphasized tends to increase year by year. At the same time, the number of multi-types that have multiple indoor units is also increasing. Under such circumstances, downsizing of the outdoor unit and space saving of the installation place are required. In addition, awareness of the air quality in the room is increasing, and the need for ventilation is required.

Conventionally, this type of air conditioner has a structure as shown in FIG. The configuration will be described below with reference to FIG.

As shown in the figure, the outdoor unit 101 includes
An air inlet 102 and an air outlet 103 are provided,
Inside the outdoor unit 101, a compressor 104, an outdoor heat exchanger 105, a switching valve 106, and an expansion device 107.
And an outdoor blower 108, the discharge port and the suction port of the compressor 104 are connected to the switching valve 106, the switching valve 106 is connected to the outdoor heat exchanger 105, and the outdoor heat exchanger 105. The other is connected to the expansion device 107. The indoor unit 109 has an air suction port 110,
An air outlet 111 is provided, and an indoor heat exchanger 112 and an indoor blower 11 are provided inside the indoor unit 109.
3 is provided, and the indoor heat exchanger 112 in the indoor unit 109 is provided with refrigerant pipes 114 and 115.
Switching valve 106 and expansion device 1 in the outdoor unit 101
It is connected to 07.

In the above structure, when the switching valve 106 is switched as shown by the solid line in the figure, the cooling cycle operation is performed, the cool air is supplied to the room, and the switching valve 106 is operated.
The heating cycle operation is performed and hot air is supplied to the interior of the room when is switched as indicated by the broken line in the figure.

[0006]

In such a conventional air conditioner, particularly in the case of the multi-type, there is one outdoor unit with respect to a plurality of indoor units, and the blower and the outdoor heat exchanger become large. Due to the increase in the size of the outdoor unit itself, the installation area of the outdoor unit itself and the necessary installation area for securing the ventilation path are increased, and at the same time, the exterior unit is impaired. However, there was a problem that it did not have a ventilation function.

The present invention solves the above-mentioned problems, and the outdoor unit can be downsized, and the installation area of the outdoor unit itself and the necessary installation area for securing a ventilation path can be reduced, and at the same time, the exterior property can be improved. A first object is to provide an air conditioner.

A second object is to provide an air conditioner which is switchable between ventilation by simultaneous supply and discharge and indoor circulation and which is compact and improves the exterior appearance.

A third object of the present invention is to provide an air conditioner having a heat recovery function, capable of performing ventilation by simultaneous supply and discharge, and being compact and having improved exterior appearance.

A fourth object of the present invention is to provide an air conditioner having a heat recovery function, which is capable of switching between ventilation and indoor circulation by simultaneous supply and exhaust, and which is compact and improves the exterior appearance.

[0011]

The first means for achieving the first object of the present invention is to provide a compressor, an expansion device, an outdoor heat exchanger, an indoor heat exchanger, and a switch. Equipped with a valve,
In a heat pump type air conditioner in which an outdoor unit and an indoor unit are separately arranged, a compressor and a switching valve are provided in the outdoor unit, and an indoor heat exchanger, an indoor blower, and an outdoor unit are provided in the indoor unit. A heat exchanger, an outdoor blower, an air passage that connects the indoor heat exchanger and the indoor blower, an air passage that connects the outdoor heat exchanger and the outdoor blower, and an expansion device And an air conditioner having

The second means for achieving the second object is to connect the indoor heat exchanger and the indoor blower to each other, and to connect the outdoor heat exchanger and the outdoor blower to each other. An air passage that switches the air passages to each other and that connects the indoor heat exchanger and the outdoor air blower to each other, and a damper device that can be changed to an air passage that connects the outdoor heat exchanger to the indoor air blower The air conditioner of the first means is configured.

A third means for achieving the third object is provided with a total heat exchange element for exchanging heat between the indoor air and the outdoor air, and downstream of the indoor air passing through the total heat exchange element. A first side having an outdoor heat exchanger on the side and an indoor heat exchanger on the downstream side of the outdoor air that has passed through the total heat exchange element.
The air conditioner of the above means is configured.

A fourth means for achieving the fourth object is to shut off the air blown by the indoor blower and the air blown by the outdoor blower from flowing into the total heat exchange element. At the same time, the air conditioner of the third means is provided with a damper device capable of changing the air passage.

[0015]

According to the present invention, since the outdoor heat exchanger and the blower in the outdoor unit are arranged in the indoor unit by the configuration of the first means described above, the outdoor unit is downsized, and the installation area and the air blow of the outdoor unit itself are reduced. It is possible to reduce the required installation area for securing routes and improve the exterior quality.

Further, according to the structure of the second means, an air passage for connecting the indoor heat exchanger and the indoor blower and an air passage for connecting the outdoor heat exchanger and the outdoor blower in the indoor unit. By switching between each other, a changeable damper device is provided in the air passage that connects the indoor heat exchanger and the outdoor blower, and the air passage that connects the outdoor heat exchanger and the indoor blower It can switch between ventilation and indoor circulation.

According to the structure of the third means, a total heat exchange element is provided to exchange heat between indoor air and outdoor air,
The outdoor air passes through the total heat exchange element and then passes through the indoor heat exchanger, and the indoor air passes through the total heat exchange element and finally passes through the outdoor heat exchanger. It can ventilate.

Further, by the construction of the fourth means, since the inflow of the indoor air and the outdoor air into the total heat exchange element is blocked and the damper device capable of changing the air passage is provided in the indoor unit, the heat recovery is performed. It is possible to switch between ventilation and indoor circulation by simultaneous supply and discharge with a function.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. The same parts as those in the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, inside the outdoor unit 1, a compressor 104 and a switching valve 106 are provided.
The discharge port and the suction port of 04 are connected to the switching valve 106. The indoor unit 2 includes an indoor air inlet 3, an indoor air outlet 4, an outdoor air inlet 5, and an outdoor air outlet 6, and an indoor heat exchanger 112 is provided inside the indoor unit 2. , Indoor blower 113 and outdoor heat exchanger 10
5, an outdoor blower 108, and an expansion device 107, and the indoor heat exchanger 112 and the outdoor heat exchanger 105.
Is connected via an expansion device 107, and the other of the indoor heat exchanger 112 and the outdoor heat exchanger 105 is connected to the switching valve 106 inside the outdoor unit 1 by refrigerant pipes 114 and 115, respectively. It has become.

In the above structure, when the switching valve 106 is switched as shown by the solid line in the figure, the cooling cycle operation is performed, and the outdoor air sucked by the outdoor blower 108 passes through the outdoor heat exchanger 105. The indoor air discharged to the outside of the room and sucked by the indoor blower 113 passes through the indoor heat exchanger 112 and is then supplied to the room as cold air. Further, when the switching valve 106 is switched as shown by the broken line in the figure, the heating cycle operation is performed,
The outdoor air sucked by the outdoor blower 108 passes through the outdoor heat exchanger 105, is then discharged to the outside, and the indoor air sucked by the indoor blower 113 is the indoor heat exchanger 1.
After passing through 12, it will be supplied as warm air into the room.

As described above, according to the air conditioner of the first embodiment of the present invention, by disposing the outdoor heat exchanger and the blower in the outdoor unit in the indoor unit, the outdoor unit can be made smaller than the conventional one. It is possible to reduce the installation area of the outdoor unit itself and the installation area required to secure the ventilation path, and at the same time improve the exterior appearance.

In the embodiment, one indoor unit is shown for one outdoor unit. However, even in the multi-type in which two or more indoor units are connected, an outdoor heat exchanger and a blower which are increased in size are provided. It can be distributed in each indoor unit and the same effect can be obtained.

Next, the second embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. As shown in the drawing, a compressor 104 and a switching valve 106 are provided inside the outdoor unit 1, and the discharge port and the suction port of the compressor 104 have the switching valve 106.
It is connected to the. The indoor unit 2 includes an indoor air inlet 3, an indoor air outlet 4, an outdoor air inlet 5, and an outdoor air outlet 6, and an indoor heat exchanger 112 is provided inside the indoor unit 2. For the indoor blower 113, the outdoor heat exchanger 105, the outdoor blower 108, the damper device 7 and the damper device 8 capable of changing the air passage of the indoor blower 113, and the outdoor heat exchanger 105. The damper device 9 and the damper device 10 capable of changing the air passage of the outdoor blower 108 and the expansion device 107 are provided,
The indoor heat exchanger 112 and the outdoor heat exchanger 105 are connected via the expansion device 107, and the indoor heat exchanger 1
The other of 12 and the outdoor heat exchanger 105 is connected to the switching valve 106 inside the outdoor unit 1 by refrigerant pipes 114 and 115, respectively.

In the above structure, the cooling cycle operation is performed when the switching valve 106 is switched as shown by the solid line in the figure. Here, the damper device 7, 8, 9, 1
When 0 is switched as indicated by the solid line in the figure, the indoor air circulation operation causes the outdoor air sucked by the outdoor blower 108 to pass through the outdoor heat exchanger 105, and then is discharged to the outside of the room. The indoor air that has been sucked in passes through the indoor heat exchanger 112 and is then supplied to the room as cold air. Further, when the damper devices 7, 8, 9, 10 are switched as shown by the broken line in the figure, the indoor air sucked by the indoor blower 113 is transferred to the outdoor heat exchanger 105 by the ventilation operation by the simultaneous supply and discharge. After passing, the outdoor air discharged to the outside of the room and sucked by the outdoor blower 108 passes through the indoor heat exchanger 112, is supplied as cold air to the room, and is ventilated by simultaneous supply and discharge. Next, when the switching valve 106 is switched as shown by the broken line in the figure, the heating cycle operation is performed. Here, similarly to the above, the damper devices 7, 8, 9, 1
When 0 is switched as indicated by the solid line in the figure, the indoor air circulation operation causes the outdoor air sucked by the outdoor blower 108 to pass through the outdoor heat exchanger 105, and then is discharged to the outside of the room. The indoor air that has been sucked in passes through the indoor heat exchanger 112 and is then supplied to the room as warm air. Further, when the damper devices 7, 8, 9, 10 are switched as shown by the broken line in the figure, the indoor air sucked by the indoor blower 113 is transferred to the outdoor heat exchanger 105 by the ventilation operation by the simultaneous supply and discharge. After passing, the outdoor air discharged to the outside of the room and sucked by the outdoor blower 108 passes through the indoor heat exchanger 112 and is then supplied as warm air to the room, and ventilation is performed by simultaneous air supply and discharge. ..

As described above, according to the air conditioner of the second embodiment of the present invention, by disposing the outdoor heat exchanger and the blower in the outdoor unit in the indoor unit, the outdoor unit is made smaller than the conventional one. In addition, it is possible to reduce the installation area of the outdoor unit itself and the installation area required to secure the ventilation path, and at the same time improve the exterior property.In addition, an indoor heat exchanger and an indoor blower can be installed in the indoor unit. The air passages that communicate with each other and the air passages that communicate between the outdoor heat exchanger and the outdoor blower are switched to each other, and the air passages that communicate between the indoor heat exchanger and the outdoor blower, and the outdoor heat exchanger and the indoor By installing a damper device that can be changed in the air passage that communicates with the blower, it is possible to switch between ventilation by simultaneous supply and exhaust and indoor circulation, and during ventilation operation by simultaneous supply and exhaust, indoor air can be stored in the outdoor heat exchanger. By supplying, high operating heat exchange efficiency is possible, in particular it is operated not easily frosted outdoor heat exchanger surfaces in the heating operation.

In the embodiment, one indoor unit is shown for one outdoor unit. However, even in the multi-type in which two or more indoor units are connected, an outdoor heat exchanger and a blower which are increased in size are provided. It can be distributed in each indoor unit and the same effect can be obtained.

Next, a third embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. As shown in the drawing, a compressor 104 and a switching valve 106 are provided inside the outdoor unit 1, and the discharge port and the suction port of the compressor 104 have the switching valve 106.
It is connected to the. The indoor unit 2 includes an indoor air inlet 3, an indoor air outlet 4, an outdoor air inlet 5, and an outdoor air outlet 6, and an indoor heat exchanger 112 is provided inside the indoor unit 2. , Total heat exchange so that the air sent by the indoor blower 113, the outdoor heat exchanger 105, the outdoor blower 108, the air sent by the indoor blower 113, and the air sent by the outdoor blower 108 can be heat-exchanged. Element 1
1 and an expansion device 107, the indoor heat exchanger 112 and the outdoor heat exchanger 105 are connected via the expansion device 107, and the indoor heat exchanger 112 and the outdoor heat exchanger are included. The other of 105 is connected to the switching valve 106 inside the outdoor unit 1 by refrigerant pipes 114 and 115, respectively.

In the above structure, when the switching valve 106 is switched as shown by the solid line in the figure, the cooling cycle operation is performed, and the indoor air sucked by the indoor blower 113 passes through the total heat exchange element 11 and the outdoor. Heat exchanger 1
After passing 05, it is discharged to the outside of the room. Outdoor blower 108
The outdoor air sucked by the air passes through the total heat exchange element 11,
After heat exchange with the indoor air and cooling, indoor heat exchanger 11
After passing through 2, the air is supplied as cold air into the room, and ventilation is performed by simultaneous supply and exhaust with less heat loss. Further, when the switching valve 106 is switched as shown by the broken line in the figure, the heating cycle operation is performed, and the indoor blower 11
The room air sucked by 3 passes through the total heat exchange element 11, passes through the outdoor heat exchanger 105, and is discharged to the outside of the room. The outdoor air sucked by the outdoor blower 108 passes through the total heat exchange element 11, exchanges heat with the indoor air and is heated, and then passes through the indoor heat exchanger 112 to be supplied as warm air into the room and to be heated. Ventilation will be performed by simultaneous supply and discharge with less loss.

As described above, according to the air conditioner of the third embodiment of the present invention, the outdoor unit heat exchanger and the blower are arranged in the indoor unit, so that the outdoor unit is made smaller than the conventional one. In addition, the installation area of the outdoor unit itself and the necessary installation area for securing the ventilation path can be reduced, at the same time the exterior property can be improved, and further, a total heat exchange element is installed so that the indoor air and the outdoor air can exchange heat. The outdoor heat load can be reduced by providing the outdoor air through the indoor heat exchanger after passing through the total heat exchange element, and the indoor air passes through the total heat exchange element and finally through the outdoor heat exchanger. With such a configuration, the heat exchange efficiency in the outdoor heat exchanger can be increased, and ventilation by simultaneous supply / discharge with less heat loss becomes possible, especially on the surface of the outdoor heat exchanger during heating operation. In which it is possible to achieve a frost difficult operation.

In the embodiment, one indoor unit is shown for one outdoor unit. However, even in a multi-type in which two or more indoor units are connected, an outdoor heat exchanger and a blower which are increased in size are installed. It can be distributed in each indoor unit and the same effect can be obtained.

Next, the fourth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. As shown in the drawing, a compressor 104 and a switching valve 106 are provided inside the outdoor unit 1, and the discharge port and the suction port of the compressor 104 have the switching valve 106.
It is connected to the. The indoor unit 2 includes an indoor air inlet 3, an indoor air outlet 4, an outdoor air inlet 5, and an outdoor air outlet 6, and an indoor heat exchanger 112 is provided inside the indoor unit 2. , Total heat exchange so that the air sent by the indoor blower 113, the outdoor heat exchanger 105, the outdoor blower 108, the air sent by the indoor blower 113, and the air sent by the outdoor blower 108 can be heat-exchanged. Element 1
1 and the total heat exchange element 1 of the air sent by the indoor blower 113 and the air sent by the outdoor blower 108
Damper devices 12 and 13 for blocking the inflow to 1.
The indoor heat exchanger 112 including the expansion device 107.
And the outdoor heat exchanger 105 are connected via an expansion device 107, and the other of the indoor heat exchanger 112 and the outdoor heat exchanger 105 has refrigerant pipes 114 and 1 respectively.
It is configured to be connected to the switching valve 106 inside the outdoor unit 1 by 15.

In the above structure, the cooling cycle operation is performed when the switching valve 106 is switched as shown by the solid line in the figure. Here, the damper devices 12 and 13
Is switched as shown by the solid line in the figure, the indoor air sucked by the indoor blower 113 passes through the total heat exchange element 11 and the outdoor heat exchanger 105 by the ventilation operation by the simultaneous supply and discharge. , Discharged outside the room. The outdoor air sucked by the outdoor air blower 108 passes through the total heat exchange element 11, exchanges heat with the indoor air and is cooled, and then passes through the indoor heat exchanger 112, is supplied as cold air to the room, and also loses heat. Ventilation is performed by simultaneous supply and discharge with a small amount of air. Further, when the damper devices 12 and 13 are switched as shown by the broken line in the drawing, the indoor circulation operation blocks the outdoor air sucked by the outdoor blower 108 from flowing into the total heat exchange element 11, and the outdoor air is blocked. Heat exchanger 1
After passing 05, it is discharged to the outside of the room. Indoor blower 113
The indoor air sucked by is blocked from flowing into the total heat exchange element 11, passes through the indoor heat exchanger 112, and is supplied to the room as cold air. Next, when the switching valve 106 is switched as shown by the broken line in the figure, the heating cycle operation is performed. Here, similarly to the above, when the damper devices 12 and 13 are switched as shown by the solid line in the figure, the indoor blower 1 is operated by the ventilation operation by the simultaneous supply and discharge.
The indoor air sucked by 13 passes through the total heat exchange element 11, passes through the outdoor heat exchanger 105, and is discharged to the outside of the room. The outdoor air sucked by the outdoor blower 108 passes through the total heat exchange element 11, exchanges heat with the indoor air and is heated, and then passes through the indoor heat exchanger 112 to be supplied as warm air into the room and to be heated. Ventilation will be performed by simultaneous supply and discharge with less loss. Further, when the damper devices 12 and 13 are switched as shown by the broken line in the drawing, the indoor circulation operation blocks the outdoor air sucked by the outdoor blower 108 from flowing into the total heat exchange element 11, and the outdoor air is blocked. It passes through the heat exchanger for use 105 and is discharged to the outside of the room. The indoor air sucked by the indoor blower 113 is blocked from flowing into the total heat exchange element 11, and the indoor heat exchanger 1
After passing through 12, the air is supplied as warm air into the room.

As described above, according to the air conditioner of the fourth embodiment of the present invention, by disposing the outdoor heat exchanger and the blower in the outdoor unit in the indoor unit, the outdoor unit can be made smaller than the conventional one. In addition, it is possible to reduce the installation area of the outdoor unit itself and the installation area required to secure the air flow path, and at the same time improve the exterior property. By providing a damper device that can change the air passage while blocking the inflow, ventilation and indoor circulation can be switched by simultaneous supply and discharge with less heat loss.

In the embodiment, one indoor unit is shown for one outdoor unit. However, even in the multi-type in which two or more indoor units are connected, an outdoor heat exchanger and a blower which are increased in size are provided. It can be distributed in each indoor unit and the same effect can be obtained.

[0036]

As is apparent from the above embodiments, according to the present invention, by disposing the heat exchanger and the blower in the outdoor unit in the indoor unit, the outdoor unit is downsized and the outdoor unit itself is installed. It is possible to provide an air conditioner capable of reducing the area and the required installation area for securing a ventilation path, and at the same time improving the exterior property.

In the indoor unit, the air passage that connects the indoor heat exchanger and the indoor blower and the air passage that connects the outdoor heat exchanger and the outdoor blower are switched to each other, and the indoor heat exchange is performed. Switchable ventilation and indoor circulation by simultaneous air supply / exhaust by providing a changeable damper device in the air passage that connects the air conditioner and the outdoor blower and in the air path that communicates the outdoor heat exchanger and the indoor blower. Since indoor air is supplied to the outdoor heat exchanger during ventilation operation by simultaneous air supply / exhaust, operation with high heat exchange efficiency is possible, and especially during heating operation, frost is formed on the surface of the outdoor heat exchanger. It is possible to provide an air conditioner that can be operated with difficulty.

Further, the total heat exchange element is provided so as to exchange heat between the indoor air and the outdoor air, and the outdoor air passes through the indoor heat exchanger after passing through the total heat exchange element, whereby the outdoor heat load can be reduced. By configuring the indoor air to pass through the total heat exchange element and finally to the outdoor heat exchanger, the heat exchange efficiency in the outdoor heat exchanger can be increased and the simultaneous supply with the heat recovery function can be achieved. It is possible to provide an air conditioner that can be ventilated by exhaustion and can be operated particularly in the heating operation without frost formation on the surface of the outdoor heat exchanger.

In addition, a damper device capable of changing the air passage while blocking the inflow of air sent by the indoor blower and air sent by the outdoor blower into the total heat exchange element is provided in the indoor unit. Thus, it is possible to provide an air conditioner having a heat recovery function and capable of switching between ventilation and indoor circulation by simultaneous supply and discharge.

[Brief description of drawings]

FIG. 1 is a refrigeration cycle diagram of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is the same refrigeration cycle diagram of the second embodiment.

FIG. 3 is the same refrigeration cycle diagram of the third embodiment.

FIG. 4 is the same refrigeration cycle diagram of the fourth embodiment.

FIG. 5 is a refrigeration cycle diagram of a conventional air conditioner.

[Explanation of symbols]

 1 Outdoor unit 2 Indoor unit 7 Damper device 8 Damper device 9 Damper device 10 Damper device 11 Total heat exchange element 12 Damper device 13 Damper device 104 Compressor 105 Outdoor heat exchanger 106 Switching valve 107 Expansion device 108 Outdoor blower 112 Indoor Heat exchanger 113 indoor blower

Claims (4)

[Claims] 1. A heat pump type air conditioner comprising a compressor, an expansion device, an outdoor heat exchanger, an indoor heat exchanger and a switching valve, wherein the outdoor unit and the indoor unit are arranged separately. , An outdoor unit having a compressor and a switching valve, and an indoor unit having an indoor heat exchanger, an indoor blower, an outdoor heat exchanger, an outdoor blower, and the indoor heat exchanger. An air conditioner comprising an air passage communicating with the indoor blower, an air passage communicating with the outdoor heat exchanger and the outdoor blower, and an expansion device. 2. An indoor unit is provided with an air passage that connects an indoor heat exchanger and an indoor blower and an air passage that connects an outdoor heat exchanger and an outdoor blower to each other. The air conditioner according to claim 1, further comprising a damper device that can be changed to an air passage that connects the exchanger and the outdoor blower, and a wind passage that connects the outdoor heat exchanger and the indoor blower. 3. An indoor unit is provided with a total heat exchange element for exchanging heat between indoor air and outdoor air, and an outdoor heat exchanger is provided downstream of the indoor air passing through the total heat exchange element, The air conditioner according to claim 1, further comprising an indoor heat exchanger downstream of the outdoor air that has passed through the total heat exchange element. 4. The air conditioner according to claim 3, further comprising a damper device capable of changing the air passage while blocking the indoor air and the outdoor air from flowing into the total heat exchange element in the indoor unit.