JPH0228347Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air conditioner that can selectively heat and cool a room.

[Conventional technology]

Conventionally, an air conditioner shown in FIG. 3 is known.
The air conditioner shown in FIG. 3 includes one indoor unit 1 and two outdoor units, namely a heating outdoor unit 2 and a cooling outdoor unit 3.
Contains.

The indoor unit 1 and the heating outdoor unit 2 are connected by a heat medium circuit 4. The heat medium circuit 4 includes a heat radiation coil 6 arranged in the indoor unit 1 and a heating outdoor unit 2.
It has a heating heat exchanger 7 arranged at A heat medium such as water is circulated through the heat medium circuit 4 by a pump 8 . During the circulation of the heating medium, the heating medium inside the heating heat exchanger 7 is heated by combustion of the gas fuel 10 in the heating burner 9 disposed in the heating outdoor unit 2.
As a result, indoor heating is performed by heat radiation from the heat radiation coil 6. In addition, the heating outdoor unit 2 includes a hot water supply burner 11 and a hot water heat exchanger 12 facing thereto.
In addition to heating, the facility also provides hot water.

On the other hand, the indoor unit 1 and the outdoor cooling unit 3 are connected via a refrigeration circuit 14. Refrigeration circuit 1
4 has an evaporator 16 disposed in the indoor unit 1, and a compressor 17, a condenser 18, and an expansion valve 19 disposed in the outdoor cooling unit 3. By circulating the refrigerant in the refrigeration circuit 14, the evaporator 16 absorbs heat, thereby cooling the room. Note that 21 and 22 are fans for promoting heat absorption and radiation.

[Problem that the invention attempts to solve]

By the way, in concrete housing complexes (hereinafter referred to as housing complexes), the heating outdoor unit 2 is housed in a pipe shaft (PS), while the cooling outdoor unit 3 is placed on the balcony, passageway, etc. .
Therefore, the construction work must be carried out separately, resulting in poor implementation efficiency. In addition, the number of pipes connecting the indoor unit and the outdoor unit increases, which not only impairs the aesthetics of the interior, but also creates many layout restrictions. Another problem is that the outdoor cooling unit becomes a nuisance and tends to spoil its appearance.

Therefore, an object of the present invention is to provide a heating/cooling switching type air conditioner that solves the above-mentioned drawbacks and problems all at once.

[Means for solving problems]

The air conditioner according to the present invention includes an indoor unit placed indoors, an outdoor unit placed outdoors, a heat medium circuit that serves as a passage for the heat medium, and a pump that circulates the heat medium in the heat medium circuit. In the air conditioner, the heat medium circuit includes a heat absorption/radiation coil provided in the indoor unit, first and second heat exchangers provided in the outdoor unit, and the first and second heat exchangers. a heating burner capable of heating the heat medium in the first heat exchanger; Second
A cooling refrigeration circuit capable of cooling the heat medium in the heat exchanger is provided.

〔Example〕

FIG. 1 schematically shows a hot water supply/air conditioning system using an embodiment of the present invention. The apparatus shown in FIG. 1 includes an indoor unit 31 arranged indoors, an outdoor unit 32 arranged outdoors, and a heat medium circuit 33 serving as a passage for a heat medium such as water. The indoor unit 31 includes a heat medium circuit 33
A heat absorption/radiation coil 34, which is a part of the heat absorption/radiation coil 34, and a fan 35 for promoting heat absorption/radiation are arranged.
On the other hand, first and second heat exchangers 36 and 37, which are other parts of the heat medium circuit 33, are arranged in the outdoor body 32. First and second heat exchangers 36, 37
The inflow of the heat medium can be switched by a three-way valve 38 as a connection switching means. That is, the three-way valve 38 is for allowing the heat medium to flow into only one of the first and second heat exchangers 36 and 37. Here, the heat exchanger whose inflow of heat medium is cut off is in a state where it is substantially separated from the heat absorption/radiation coil 34. A pump 39 is also provided to circulate the heat medium in the heat medium circuit 33. A three-way valve 38 and a pump 39 are also arranged on the outdoor body 32.

The outdoor body 32 further includes a first heat exchanger 36.
A heating burner 41 that can heat the heat medium inside the
A cooling refrigeration circuit 42 that can cool the heat medium in the heat exchanger 37 is provided.

The heating burner 41 burns gas fuel 43,
The combustion heat generated at this time heats the first heat exchanger 36 from the outside. On the other hand, the cooling refrigeration circuit 42 includes a compressor 46, a condenser 47, an expansion valve 48,
and an evaporator 49. Evaporator 49
is arranged in the second heat exchanger 37 to cool the heat medium. In this cooling refrigeration circuit 42, as the refrigerant circulates, it goes without saying that the evaporator 49 absorbs heat and the condenser 47 radiates heat. Note that the condenser 47 is equipped with a fan 5 for promoting heat radiation.
1 is facing.

Now, the heat medium of the heat medium circuit 33 is transferred to the first heat exchanger 36.
When the heating medium is circulated through the heating burner 41 and combusted, the heating medium is heated and the heat is radiated from the heat absorption/radiation coil 34, so that the room can be heated. In addition, the heat medium of the heat medium circuit 33 is
When the heat medium is circulated through the heat exchanger 37 and the cooling refrigeration circuit 42 is driven, the heat medium is cooled.
Since the heat absorption/radiation coil 34 absorbs heat, the room can be cooled. Note that 52 is herein referred to as the cooling outdoor unit portion.

The outdoor body 32 also includes a hot water supply burner 56 that burns gas fuel 43, and a hot water supply burner 56 that burns gas fuel 43.
A hot water supply heat exchanger 58 is provided, which heats city water (tap water) 57 using combustion heat.
According to this, hot water can also be supplied as needed.

FIG. 2 shows the above-mentioned outdoor unit 32 in an attached state. A general housing complex has a pipe shaft 61. The outdoor body 32 is assembled into this pipe shaft 61. Here, the cooling outdoor unit portion 52 is aligned with other portions in the left-right direction.

[Effect of idea]

As explained above, according to the air conditioner of the present invention, the piping connecting the indoor unit and the outdoor unit can be shared for both heating and cooling, making it easy to implement, improving the interior aesthetics, and The degree of freedom in layout also increases. Also, the outdoor unit becomes unstable,
It does not spoil the appearance. Moreover, the indoor unit has a simple structure and is small in size, and therefore, when a plurality of indoor units are used for one outdoor unit, it is possible to significantly reduce costs.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a hot water supply/air conditioner using an embodiment of the present invention, Fig. 2 is an explanatory perspective view showing how the outdoor unit is installed, and Fig. 3 is a schematic diagram of an example of a conventional air conditioner. FIG. 31... Indoor unit, 32... Outdoor unit, 33... Heat medium circuit, 34... Heat absorption/radiation coil, 36... First heat exchanger, 37... Second heat exchanger, 38... Three-way valve,
39...Pump, 41...Heating burner, 42...Cooling refrigeration circuit, 49...Evaporator.

Claims (1)

[Scope of utility model registration request] In an air conditioner that includes an indoor unit placed indoors, an outdoor unit placed outdoors, a heat medium circuit serving as a passage for a heat medium, and a pump that circulates the heat medium in the heat medium circuit, The medium circuit includes a heat absorption/radiation coil provided on the indoor unit, first and second heat exchangers provided on the outdoor unit, and a heat exchanger that connects the first and second heat exchangers to the heat absorption/radiation coil. a connection switching means for selectively connecting to the coil; and a heating burner capable of heating the heating medium in the first heat exchanger; An air conditioner characterized by being provided with a cooling refrigeration circuit capable of cooling a heat medium.