JPH06249461A - Air conditioner having heat exchanging and ventilating function - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an air conditioner with a heat exchange ventilation function, which can reduce the size and cost of a heat exchange supply / exhaust (ventilation) device. [Composition] In an air conditioner with a heat exchange ventilation function that integrates indoor and outdoor units, a heat pipe ventilation heat exchanger 11 and a ventilation mechanism capable of simultaneous air supply and exhaust are provided, and a ventilation path of the heat pipe ventilation heat exchanger is The air supply air passage and the exhaust air passage are divided into two, and after the indoor air passes through the exhaust air passage of the heat pipe ventilation heat exchanger 11, it is exhausted to the outside by the outdoor air blowing mechanism, and the outdoor air is the heat pipe ventilation heat. After passing through the air supply ventilation passage of the exchanger 11, the air is supplied indoors by the indoor air blowing mechanism. [Effect] The indoor air blower and the outdoor air blower for an air conditioner can supply and exhaust air to perform heat exchange ventilation, and can achieve product thinness, compactness, and cost reduction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a house-integrated (built-in) air conditioner and to an air conditioner having a heat exchange ventilation function.

[0002]

2. Description of the Related Art In recent years, in order to improve comfort and energy saving of a house, the heat insulation and the airtightness of the house have been advanced.
However, on the other hand, the harmful effects of promoting airtightness have been highlighted. The main adverse effects are (1) and (2) below.

(1) Since the amount of natural ventilation is reduced, the air quality in the room is reduced. (Air quality is the quality of air and indicates the cleanliness of the air. For example, when the proportion of pollutants such as carbon monoxide, carbon dioxide, dust, pets, and the odor of tobacco is high, The air quality is poor. When the air quality is low, the air quality is good.) (2) Since the natural ventilation decreases, the indoor humidity rises due to exhalation from the human body, perspiration, cooking, laundry, etc. As a result, water vapor will condense on the walls and windows facing the outside, causing mold and tick damage.

In order to solve these problems, it is the simplest to provide a ventilation fan and operate it, but in winter when the temperature difference between the indoor and outdoor is large, the heating load increases and the indoor temperature distribution is uneven. However, the effect of high heat insulation and high airtightness is reduced to half, which is not a desirable method.

Therefore, conventionally, in addition to cooling and heating equipment such as a heat pump air conditioner and a gas fan heater, a heat exchange ventilation fan capable of heat exchange ventilation with high energy saving is provided for ventilation, and the above (1) and (2) I was dealing with a problem.

[0006] The heat exchange ventilation fan is a means for exchanging heat between the outside and the inside of the room and using the air / air heat exchanger to reduce the heating and cooling load due to ventilation. is there.

The heat exchange ventilation fan has been generally put into practical use for about 20 years, and typical examples of its structure are shown in FIGS. 8 and 9.
Shown in (a) and (b).

FIG. 8 uses a plate fin heat exchanger 50. For example, when the warm air is discharged by the exhaust fan 52, the heat is generated by the plate fin heat exchanger 5
On the other hand, when the cold air supplied by the air supply fan 53 passes through the plate fin heat exchanger 50, the heat absorbed by the plate fin heat exchanger 50 is supplied to the air supply, and the warm air is supplied. To Plate fin heat exchanger 5
0 is for heat exchange by crossing the supply air and the exhaust air.

9A and 9B show a rotary heat exchanger 51.
Is used. The rotary heat exchanger 51 rotates,
The exhaust fan 54 and the air supply fan 55 exchange heat between the exhaust air and the air supply. Each of the types shown in FIGS. 8, 9A, and 9B requires a heat exchanger dedicated to heat exchange ventilation and a supply / exhaust fan.

Further, in order to improve the comfort and aesthetics of a house, a housing-integrated (built-in) air conditioner is becoming popular due to the problem of the installation space of the air conditioner. In particular, the heat pump air conditioner is suitable as a housing-integrated air conditioner due to its economical efficiency and safety, and the sales volume is growing significantly.

There are actually examples of products that combine a heat exchange ventilating fan and a heat pump air conditioner, even for large ones such as those for buildings. However, in the case of a detached house or an apartment house, it is required to be compact, and particularly thin.

Conventionally, as an indoor / outdoor integrated air conditioner, FIG.
There is provided a device having a cross section as shown in FIG. The device includes a compressor 31, a four-way valve 32, an indoor heat exchanger 33,
Expansion valve 34, outdoor heat exchanger 35, refrigerant pipe 36, indoor blower 37, outdoor blower 38, indoor condensation water tray 39,
It is composed of an outdoor dew condensation water tray 40, an exhaust side damper 41, and an air supply side damper 42.

In the case of heating, the flow of the refrigerant is as shown by the solid arrow, and the indoor heat exchanger 33 acts as a condenser,
The outdoor heat exchanger 35 acts as an evaporator. The indoor air passes through the indoor heat exchanger 33 and is sucked into the indoor blower 37. At this time, the indoor air exchanges heat with the high-temperature and high-pressure refrigerant flowing inside the indoor heat exchanger 33 and is heated to enter the room. It is blown out and heating is performed. The outdoor air passes through the outdoor heat exchanger 35 and is sucked into the outdoor blower 38. At this time, the outdoor air heats the low-temperature low-pressure refrigerant flowing inside the outdoor heat exchanger 35, and then the outdoor air. Be leaked to.

On the other hand, in the case of cooling, the flow of the refrigerant flows as shown by the broken line arrow, the indoor heat exchanger 33 acts as an evaporator, and the outdoor heat exchanger 35 acts as a condenser. The indoor air passes through the indoor heat exchanger 33 and passes through the indoor blower 37.
The indoor air is heat-exchanged with the low-temperature low-pressure refrigerant flowing inside the indoor heat exchanger 33 at this time to be cooled and blown out into the room for cooling. The outdoor air passes through the outdoor heat exchanger 35 and is sucked into the outdoor blower 38. At this time, the outdoor air exchanges heat with the high-temperature and high-pressure refrigerant flowing inside the outdoor heat exchanger 35 to raise the temperature. After that, it is leaked to the outside.

Next, FIG. 11 shows an operating state in the case of performing air supply / exhaust (ventilation) in the apparatus of FIG. in this case,
The compressor 31 is not operating and the refrigerant is not flowing. As shown in FIG. 11, the exhaust side damper 41, the air supply side damper 4
2 is moved so that the exhaust opening 43 and the air supply opening 44 are opened. At this time, the outdoor air is sucked by the indoor blower 37 and flows into the room as air supply. On the other hand, the dirty air in the room is sucked in by the outdoor blower 38,
It is discharged to the outside as exhaust air.

[0016]

As in the case of a detached house or an apartment house, there is a product to which a normal ventilation function is added as described above in regard to the one that is required to be compact, especially thin. However, when a heat exchange ventilation fan is installed, it becomes large in size, and it becomes impossible to install it in a bay window unit, a wall, or under a window, so that they are currently used only as individual products.

Therefore, it is an object of the present invention to combine a heat exchange ventilation function and a house-integrated heat pump air conditioner in a compact size with a minimum number of constituent elements and at a low price, to provide comfort and energy saving. It is to provide an air conditioner with a high heat exchange ventilation function.

[0018]

To achieve the above object, the main means adopted by the present invention are a compressor, a four-way valve,
An indoor heat exchanger, an expansion valve, an outdoor heat exchanger, and a pipe line that connects these components and circulates a heat medium for transferring heat to form a refrigeration cycle and send indoor air to the indoor heat exchanger for cooling and heating. Air with a heat exchange ventilation function that is integrated with an indoor / outdoor unit that has an indoor air blower mechanism for supplying heat to the outdoor heat exchanger and an outdoor air blower mechanism for collecting or exhausting heat required for cooling and heating. The air conditioner is equipped with a heat pipe ventilation heat exchanger and a ventilation mechanism capable of simultaneous air supply and exhaust, and the ventilation path of the heat pipe ventilation heat exchanger is divided into two: an air supply ventilation path and an exhaust ventilation path, and the indoor air is After passing through the exhaust ventilation passage of the heat pipe ventilation heat exchanger, it is exhausted to the outside by the outdoor ventilation mechanism, and the outdoor air passes through the supply ventilation passage of the heat pipe ventilation heat exchanger and is then supplied to the room. Is configured as follows.

[0019]

According to the present invention, cooling and heating and heat exchange ventilation can be performed by the two fans of the indoor air blowing mechanism and the outdoor air blowing mechanism.

[0020]

Embodiment An embodiment of the air conditioner of the present invention will be described below with reference to FIG.
7 to FIG.

FIG. 1, FIG. 2 and FIG. 3 are block diagrams of an air conditioner according to an embodiment of the present invention. 1 is a front view, FIG. 2 is a sectional view taken along line AA ′ in FIG. 1, and FIG. 2 is a sectional view taken along line BB ′ in FIG.

As shown in FIGS. 1, 2 and 3, the air conditioner of the present invention includes a compressor 1, a four-way valve 2, an indoor heat exchanger 3, an expansion valve 4, an outdoor heat exchanger 5, and a refrigerant pipe 6. , Indoor blower 7,
The outdoor blower 8, the indoor dew condensation water tray 9, the outdoor dew condensation water tray 10, and the heat pipe ventilation heat exchanger 11 (11a,
11b ... (see FIG. 6), the ventilation heat exchanger dew tray 12 is provided, and the partition plate 13 shown in FIGS. The exhaust side damper 14, the exhaust shielding plate 15, and the exhaust inlet 16 are provided in the AA 'cross section of FIG. 1, that is, FIG. An air side damper 17 is provided.

In the case of heating, the flow of the refrigerant is as shown by the solid arrow, the indoor heat exchanger 3 acts as a condenser, and the outdoor heat exchanger 5 acts as an evaporator. The indoor air passes through the indoor heat exchanger 3 and is sucked into the indoor blower 7. At this time, the indoor air exchanges heat with the high-temperature and high-pressure refrigerant flowing inside the indoor heat exchanger 3, and is heated to enter the room. It is blown out and heating is performed. The outdoor air passes through the outdoor heat exchanger 5 and is sucked into the outdoor blower 8. At this time, the outdoor air heats the low-temperature low-pressure refrigerant flowing inside the outdoor heat exchanger 5, and then the outdoor air. Be leaked to.

On the other hand, in the case of cooling, the flow of the refrigerant flows as indicated by the broken line arrow, the indoor heat exchanger 3 acts as an evaporator, and the outdoor heat exchanger 5 acts as a condenser. The indoor air passes through the indoor heat exchanger 3 and is sucked into the indoor blower 7. At this time, the indoor air exchanges heat with the low-temperature low-pressure refrigerant flowing inside the indoor heat exchanger 3, is cooled, and is blown out into the room. Air conditioning is performed. In addition, the outdoor air is the outdoor heat exchanger 5
And is sucked into the outdoor blower 8. At this time, the outdoor air exchanges heat with the high-temperature and high-pressure refrigerant flowing inside the outdoor heat exchanger 5 to raise the temperature, and then flows out of the room.

Next, the operating state of the apparatus when supplying and exhausting (ventilating) will be described with reference to FIGS. 4 and 5. Figure 4
1 shows the operating state of exhaust gas in the section AA 'in FIG. 1, and FIG. 5 shows the operating state of air supply in the section BB' in FIG. The exhaust side damper 14 and the air supply side damper 17 are moved so that the exhaust opening 18 and the air supply opening 19 are opened. At this time,
In FIG. 5, the outdoor air passes through the right portion 11b of the heat pipe ventilation heat exchanger 11 and is then sucked into the indoor blower 7 to flow into the room as air supply. On the other hand, in FIG. 4, the dirty air in the room passes through the left portion 11a of the heat pipe ventilation heat exchanger 11, is then sucked into the outdoor blower 8, and is discharged to the outside as exhaust air.

The operating state of the heat pipe ventilation heat exchanger 11 will be described with reference to FIGS. 6 and 7.

During heating, the left portion 11a of the heat pipe ventilation heat exchanger 11 is heated by the warm air discharged from the room, and the refrigerant 21 enclosed in the heat pipe 20 at that portion is evaporated. On the other hand, cold air from the outside passes through the right portion 11b of the heat pipe ventilation heat exchanger 11, and the refrigerant 21 evaporated inside the left portion of the heat pipe 20 is the right portion 11b of the heat pipe ventilation heat exchanger 11.
The cold air passing through is given heat to condense. Then, the condensed refrigerant moves to the left part (the left part 11a side of the heat pipe ventilation heat exchanger) through the wick (the folds provided on the inner surface of the heat pipe so that the liquid moves due to the capillary phenomenon) inside the heat pipe 20. Then, the cycle of evaporating again is repeated.

As described above, the cold air flowing from the outside receives the heat from the warm exhaust air from the room, is heated, and is blown into the room as the supply air. Further, in the case of cooling, contrary to the time of heating, hot air flowing in from the outside releases heat to the cold air exhausted to the outside, is cooled, and is blown into the room as air supply.

As described above, according to the present device, it is possible to perform heat exchange ventilation by supplying and exhausting air by the indoor side blower and the outdoor side blower for the air conditioner.

[0030]

As described above, according to the present invention, by providing the heat pipe ventilation heat exchanger and the air supply / exhaust mechanism, the heat exchange air supply / exhaust using the indoor air blower and the outdoor air blower for the air conditioner. Exhaust can be performed, product thinning,
Compactness and production cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a front explanatory view showing an embodiment of an air conditioner of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. 1 according to the present invention, and is a view for explaining a normal air conditioner operating condition.

FIG. 3 is a cross-sectional view taken along the line BB ′ of FIG. 1 according to the present invention, which is a view for explaining a normal air conditioner operating condition.

FIG. 4 is a diagram illustrating a heat exchange exhaust operation state in FIG.

FIG. 5 is a diagram illustrating a heat exchange air supply operation state in FIG. 3.

FIG. 6 is a perspective view illustrating a heat pipe ventilation heat exchanger used in the air conditioner according to the present invention.

FIG. 7 is a cross-sectional view illustrating a heat pipe.

FIG. 8 is an explanatory view showing a heat exchange ventilation fan using a conventional static plate fin heat exchanger.

9 (a) and 9 (b) are explanatory views showing a heat exchange ventilation fan using a conventional rotary heat exchanger.

FIG. 10 is a side sectional view for explaining the configuration of a conventional indoor / outdoor integrated air conditioner with a supply / exhaust (ventilation) function.

FIG. 11 is a diagram illustrating an air supply / exhaust (ventilation) operation state in FIG. 10.

[Explanation of symbols]

 1,31 Compressor 2,32 Four-way valve 3,33 Indoor heat exchanger 4,34 Expansion valve 5,35 Outdoor heat exchanger 6,36 Refrigerant pipe 7,37 Indoor blower 8,38 Outdoor blower 11 Heat pipe ventilation Heat exchanger 13 Partition plate 14,41 Exhaust side damper 17,42 Air supply side damper

Claims (1)

[Claims] 1. A refrigeration cycle is constituted by a compressor, a four-way valve, an indoor heat exchanger, an expansion valve, an outdoor heat exchanger, and a pipe line through which a heat medium for transferring heat is connected. , Indoor and outdoor equipped with indoor air blower mechanism to send indoor air to the indoor heat exchanger for heating and cooling, outdoor air blower mechanism to send outdoor air to the outdoor heat exchanger to collect heat or exhaust heat necessary for cooling and heating In an air conditioner with heat exchange ventilation function that integrates the machine, it is equipped with a heat pipe ventilation heat exchanger and a ventilation mechanism capable of simultaneous air supply and exhaust, and the ventilation path of the heat pipe ventilation heat exchanger is
After the air is divided into two, the air supply passage and the exhaust air passage, and the room air passes through the exhaust air passage of the heat pipe ventilation heat exchanger,
With a heat exchange ventilation function, which is configured so that it is exhausted to the outside by an outdoor air blowing mechanism, and the outdoor air passes through the air supply ventilation passage of the heat pipe ventilation heat exchanger and is then supplied to the room. Air conditioner.