JPH0113935Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an air conditioner that uses a heat pump to improve the utilization efficiency of solar heat and improves the accumulation efficiency of the heat pump.

[Background technology]

In recent years, air conditioners that use so-called heat pumps have been widely used, but as the outside temperature drops, the heating capacity of these types of air conditioners decreases.
Particularly in cold weather, sufficient air conditioning effects cannot be achieved.

On the other hand, it is known that air-type solar collectors are used to air-condition houses, but depending on the solar radiation conditions, the temperature may be higher than the outside temperature, but the temperature may be so high that it cannot be used to heat a room. In many cases, only relatively low-temperature hot air can be obtained, and conventionally, such hot air has been discharged to the outside without purpose.

[Purpose of invention]

The purpose of this invention is to provide an air conditioner that can heat the heat exchange part of a heat pump with warm air from a solar collector, compensate for the decrease in heating capacity in winter, and increase the utilization of the heat pump.

[Disclosure of invention]

An embodiment of the present invention will be described below based on the drawings. In the figure, the air conditioner 1 of the present invention has one heat exchange part 3 of a heat pump 2 extended into the room R, and the other heat exchange part 4 is connected to a solar heat collector 6 or an air flow path 7 that receives earth-cooled heat. It faces the duct part. The heat pump 2 includes an indoor unit 11 that houses a fan F1 and one of the heat exchange sections 3, and an outdoor unit 12 that connects the other heat exchange section 4, and the outdoor unit 12 has the following elements inside. It houses a compressor 15, an accumulator 16, a dryer 17, etc., and a four-way valve 19 allows one heat exchange section 3 to be used as a condensing end in the summer, and the other heat exchange section 4 as an evaporation end in the winter. In 3,
4 so that they function in reverse.

In this embodiment, the solar heat collector 6 is formed inside the attic by surrounding the attic below the transparent plate 21 provided on the roof with a heat insulating material 22 and attaching an appropriate heat collecting plate 23. Ru. However, the solar heat collector of the present invention is not limited to this.
Box-shaped solar heat collectors that have a heat collecting surface inside and are installed on the roof are also used. Further, both ends of a duct 24 passing through the underfloor space 8 are open in the solar heat collector 6, and the duct 24 has an opening located above and below the room R and having first and second dampers 25 and 26. , while opening an opening in the underfloor space 8 and having third and fourth dampers 27 and 28;
Furthermore, fifth and sixth dampers 29 and 30 are installed above the third and fourth dampers, respectively. Note that the fourth damper 28 has a second fan F2 in front of it.
Furthermore, a third fan F3 is installed in the duct 24 above the first damper 25. Furthermore, ventilation holes 35 and 3 are provided in the cloth foundations 33 and 34 surrounding the underfloor space 8.
Drill 6. Note that the first, second, fifth, and sixth dampers 2
In this embodiment, automatic dampers 5, 26, 29, and 30 are used that open and close according to the output of a sensor S provided in the solar heat collector 6.

The air flow path 7 includes a first damper 25, a second damper 25,
26 is opened and the fifth and sixth dampers 29, 30
By closing the , as shown in Figure 3a,
From the solar heat collector 6 to the first damper 25, room R,
The air path section 7a that returns to the solar heat collector 6 through the second damper 26, and the first, second, fifth, and sixth dampers 2
By switching 5, 26, 29, and 30 in the opposite direction, there is provided an air path section 7b that circulates through the damper 24 and the solar heat collector 6, as shown in FIG. 3b.
Also, close the fifth damper 29 and the sixth damper 30,
By opening the third and fourth dampers 27 and 28, as shown in FIG. It also has another air passage section 7c which does not lead to the solar heat collector 6 and which exhausts the air through the damper 27 of No. 3 and from the vent 35. The other heat exchange section 4 faces the lower part of the duct 24 that passes through the underfloor space 8, and
The air flow path 7b which shares the duct part forming this lower part of 4 and leads to the solar heat collector 5 as described above.
Then, an air flow path 7c that passes through the underfloor space 8 and receives geocooled heat is selectively formed.

However, when the temperature at the solar heat collector 6 is higher than the desired temperature in winter, the air conditioner 1
According to the output of the sensor S, the first to sixth dampers 2
5 to 30, the air passage section 7a shown in FIG.
Room R can be directly heated by circulating warm air through the solar heat collector 6, and when the temperature at the solar heat collector 6 is lower than the set temperature, the air is circulated through the air passage section 7b shown in Fig. 3b. As a result, the other heat exchange section 4 of the heat pump 2 operates as an evaporation section that pumps up heat from the air path section 7b, which has a high temperature compared to the outside air temperature, and efficiently transfers heat to the indoor unit 11 in the room R. Increase the air conditioning efficiency of R,
Moreover, the coefficient of performance of the heat pump 2 can be improved. In addition, in the summer, the air passage section 7c shown in FIG. This can be useful for cooling room R. In addition, the outdoor unit 12 is located in the underfloor space 8.
By attaching it to the outdoor unit 12, it is protected from rainwater, the piping route can be shortened, and the outdoor unit 12
Can save outdoor space for installation.

[Effect of idea]

In this way, the air conditioner of the present invention can improve the coefficient of performance of the heat pump in winter by using warm air from the solar heat collector, and can also effectively utilize solar heat even when solar radiation is low. In the summer, because geothermal cooling can be used,
Low-cost cooling becomes possible, and by using a common duct, it can help reduce air-conditioning costs and improve air-conditioning efficiency throughout the winter and summer.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a diagram showing the main parts, and FIGS. 3a to 3c are diagrams showing the operation. 2... Heat pump, 3... One heat exchange section,
4...Other heat exchange section, 6...Solar heat collector, 7
...Air flow path, 8...Underfloor space, R...Room.

Claims (1)

[Scope of utility model registration request] A duct 24 passing through the underfloor space 8 to the solar collector 6
Both ends of the duct 24 are opened, and the duct 24
, the first and second dampers 2 are opened in the room R.
5 and 26, and an opening opening in the underfloor space 8 and having third and fourth dampers 27 and 28, the first damper 25, the room R, and the second The air passage section 7a returns to the solar collector 6 via the damper 26, and the air in the underfloor space 8 flows in from the fourth damper 28, and the fourth damper 2
8 and the third damper 27 and an air path section 7c flowing out from the third damper 27 through the duct portion of the duct 27,
4 and an air path section 7b that passes through the duct section and returns to the solar collector 6, while the other heat exchange section of the heat pump, one of which extends indoors, The air conditioner faces the duct part, and the one and the other heat conversion parts can be switched to a condensing end and an evaporating end, respectively.