JPH0658649A - Separate type heat pump device - Google Patents

Abstract

PURPOSE:To simplify a structure of a separate type heat pump device, reduce a required amount of pipe and facilitate its installing work by a method wherein an outdoor heat exchanger for performing a function of a condensor or a function of an evaporator in parallel with a function of the evaporator for a first heat exchanger and a function of the condensor of a second heat exchanger under a circulation of refrigerant performed by a compressor is installed in an outdoor unit. CONSTITUTION:Refrigerant gas of high pressure discharged from a compressor Cm is divided to flow, one divided flow refrigerant is supplied to a second heat exchanger 8b in which a function of a condensor is operated at an indoor unit 2a and further the other divided flow is supplied to an outdoor heat exchanger 8c in which a function of a condensor is operated at an outdoor unit 2b through a deliverying refrigerant pipe 1a. Refrigerant liquid discharged out of the outdoor heat exchanger 8c is returned back to the indoor unit 2a through another deliverying refrigerant pipe 1b, the merged flow of returned refrigerant liquid and refrigerant liquid discharged out of the second heat exchanger 8b is supplied to the first heat exchanger 8a in which a function of an evaporator is operated at the indoor unit 2a. With such an arrangement, it is possible to make a minimum number of pipes of the delivery refrigerant pipes of two.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a first heat exchanger having an indoor unit and an outdoor unit, which are connected to each other by a crossover refrigerant pipe, so as to function as an evaporator, and a first heat exchanger of the first heat exchanger. The indoor unit is equipped with a second heat exchanger for performing a condenser function in parallel with the evaporator function, while the evaporator function of the first heat exchanger and the condenser function of the second heat exchanger in those indoor units are provided. In parallel with the condenser function,
Alternatively, the present invention relates to a separate heat pump device in which the outdoor unit is equipped with an outdoor heat exchanger that functions as an evaporator.

[0002]

2. Description of the Related Art Conventionally, in a separate type heat pump device as described above, as shown in FIGS. 10 and 11, first and second heat exchangers 8a and 8b of an indoor unit 2a, and
The outdoor unit 2b was equipped with the compressor Cm that circulates the refrigerant over the outdoor heat exchanger 8c of the outdoor unit 2b.

[0003]

However, while the first heat exchanger 8a in the indoor unit 2a functions as an evaporator and the second heat exchanger 8b functions as a condenser, the outdoor heat exchange in the outdoor unit 2b is performed. The vessel 8c is made to function as a condenser or an evaporator, and the heat exchangers 8a, 8
In order to operate the heat exchangers having the same function in parallel with the refrigerant supply to the ones having the same function among b and 8c in parallel, in order to operate the heat exchangers having the same function in parallel with respect to the second heat exchanger 8b which functions as the condenser in the indoor unit 2a, the compressor equipment side Crossover refrigerant pipe 1x that sends a high-pressure refrigerant gas (indicated by a thick black line in the figure) from the outdoor unit 2b, and a low-pressure refrigerant gas that is sent from the first heat exchanger 8a that functions as an evaporator in the indoor unit 2a ( (Indicated by white thick line in the figure) is added to the crossover refrigerant pipe 1y for returning to the outdoor unit 2b, and as shown in FIG. 10, the refrigerant liquid sent from the outdoor heat exchanger 8c for causing the outdoor unit 2b to function as a condenser. A crossover refrigerant pipe 1z for sending (indicated by a thick line in the figure) to the first heat exchanger 8a of the indoor unit 2a, or an outdoor unit as shown in FIG. The transfer refrigerant pipe 1z for sending the refrigerant liquid (indicated by a thick line in the figure) drawn from the second heat exchanger 8b of the indoor unit 2a to the outdoor heat exchanger 8c that functions as an evaporator in b. 'Becomes necessary, and the minimum required number of transition refrigerant pipes is three, resulting in a large amount of required pipes.

Incidentally, as shown in FIG. 12, a low-pressure refrigerant gas (shown by a thick white line in the figure) from the first heat exchanger 8a functioning as an evaporator in the indoor unit 2a is used as a crossover refrigerant pipe. The high-pressure gas-liquid mixed-phase refrigerant (indicated by a thick black dashed line in the figure) sent from the crossover refrigerant pipe 1x ′ returning to the outdoor unit 2b on the Cm equipment side and the outdoor heat exchanger 8c that functions as a condenser in the outdoor unit 2b. (Shown) is provided to the indoor unit 2a side, and a high-pressure gas-liquid mixed phase refrigerant supplied on the indoor unit 2a side is provided with a high-pressure refrigerant gas (indicated by a thick black line in the figure).
And a refrigerant liquid (indicated by a hatched thick line in the figure) is provided with a gas-liquid separator B, and the separated high-pressure refrigerant gas is supplied to the second heat exchanger 8b which functions as a condenser. , The refrigerant liquid sent from the second heat exchanger 8b and the refrigerant liquid separated in the gas-liquid separator B are combined into the first heat exchanger 8a.
Or to a second heat exchanger 8b which functions as a condenser in the indoor unit 2a from the outdoor unit 2b on the side of the compressor Cm through a crossover refrigerant pipe 1y ″ as shown in FIG. A high-pressure refrigerant gas (indicated by a thick black line in the figure) is supplied, and a refrigerant liquid (indicated by a thick line hatched in the figure) delivered from the second heat exchanger 8b is divided in the indoor unit 2a. The low-pressure refrigerant gas that is supplied from the first heat exchanger 8a that flows and then supplies one of the divided refrigerants to the first heat exchanger 8a that functions as an evaporator (indicated by a thick white line in the figure). Indicated by
The indoor unit has a circuit configuration in which the combined refrigerant with is supplied to the outdoor heat exchanger 8c that functions as an evaporator in the outdoor unit 2b through the crossover pipe 1x ″, so that the minimum necessary number of crossover refrigerant pipes is two. A type in which the outdoor heat exchanger 8c in the outdoor unit 2b functions as an evaporator in parallel with the evaporator function of the first heat exchanger 8a in 2a and the condenser function of the second heat exchanger 8b is also considered. But,
In this case, the structure is complicated because the gas-liquid separator B is provided, and the refrigerant supply to the heat exchangers that perform the same function is in series, so that the heat exchangers that perform the same function cannot be completely operated in parallel. There is.

In each of FIGS. 10 to 13,
ex indicates an expansion valve.

An object of the present invention is to make the outdoor heat exchanger in the outdoor unit function as a condenser while allowing the first heat exchanger in the indoor unit to function as an evaporator and the second heat exchanger to function as a condenser. In making the vessel function,
The minimum number of crossover refrigerant pipes required between the indoor unit and the outdoor unit is two, and the refrigerant can be supplied in parallel to the heat exchangers having the same function.

[0007]

A separate type heat pump device according to the present invention is characterized in that a first heat exchanger having an evaporator function by dividing an airframe into an indoor unit and an outdoor unit which are connected to each other by a crossover refrigerant pipe. A second heat exchanger having a condenser function in parallel with the evaporator function of the first heat exchanger, and a compressor provided in the indoor unit, and the first heat exchanger by refrigerant circulation by the compressor. The evaporator function and the condenser function of the second heat exchanger in parallel with the condenser function, or the outdoor heat exchanger for performing the evaporator function is provided in the outdoor unit,
The action and effect are as follows.

[0008]

That is, according to the above-mentioned characteristic configuration, the outdoor heat exchanger 8c in the outdoor unit 2b is connected to the indoor unit 2a.
When the condenser function is performed together with the second heat exchanger 8b in FIG. 4 (see FIG. 4), the high pressure refrigerant gas discharged from the compressor Cm equipped in the indoor unit 2a is diverted, and one of the diverted refrigerants is used in the indoor unit. While supplying to the 2nd heat exchanger 8b which makes a condenser function, the other branching refrigerant is supplied to the outdoor heat exchanger 8c which makes a condenser function in the outdoor unit 2b via the refrigerant pipe 1a, and the outdoor heat is supplied. The refrigerant liquid sent from the exchanger 8c is returned to the indoor unit 2a via another crossover refrigerant pipe 1b, and the return refrigerant liquid and the refrigerant liquid sent from the second heat exchanger 8b are combined in the indoor unit 2a. It is possible to adopt a circulation form in which the first heat exchanger 8a that functions as an evaporator is supplied.

Further, the outdoor heat exchanger 8c in the outdoor unit 2b is replaced with the first heat exchanger 8a in the indoor unit 2a.
When it is made to function with the evaporator together (see FIG. 5), the high-pressure refrigerant gas discharged from the compressor Cm equipped in the indoor unit 2a is supplied to the second heat exchanger 8b which functions as the condenser in the indoor unit 2a, The refrigerant liquid sent out from the second heat exchanger 8b is split, and one of the split refrigerants is supplied to the first heat exchanger 8a that functions as an evaporator in the indoor unit 2a, while the other split refrigerant is supplied to the outdoor unit 2b. Outdoor heat exchanger 8 to function as an evaporator in
It is possible to adopt a circulation mode in which the low-pressure refrigerant liquid gas supplied to the c through the refrigerant pipe 1a and sent out from the outdoor heat exchanger 8c is returned to the indoor unit 2a through the other refrigerant pipe 1b.

[0010]

That is, according to the characteristic configuration of the present invention,
The minimum required number of crossover refrigerant pipes is set to 2 without the need for a new gas-liquid separator as shown in FIGS. 12 and 13 described above, and while the refrigerant supply to the heat exchangers that perform the same function is made parallel, The outdoor heat exchanger in the outdoor unit may be made to function as a condenser or an evaporator in parallel with the evaporator function of the first heat exchanger in the indoor unit and the condenser function of the second heat exchanger.

Since the minimum required number of crossover refrigerant pipes can be reduced to two without the need for a new gas-liquid separator, the structure can be simplified and the amount of required pipes can be reduced to install and install. Of the heat exchangers of the same type of function by making it possible to supply the refrigerant in parallel to the heat exchangers of the same type of function and operate the heat exchangers of the same type of function in parallel. It is possible to suppress a change in the state of the refrigerant change in one heat exchanger from a large change in the state of the refrigerant change in the other heat exchanger due to the influence of the change in the state of the refrigerant in the other heat exchanger. A more stable heat pump operation can be performed as compared with the device configuration shown in FIG.

[0012]

EXAMPLES Next, examples will be described.

FIG. 1 shows an air conditioning facility in an intelligent building or the like. The air conditioner includes an indoor unit 2a and an outdoor unit 2 which are connected to each other by transition refrigerant pipes 1a and 1b.
A separate type heat pump type air conditioner in which the airframe is divided into b and b is installed.

3a is the return air Ri from the interior zone I
Is a return air duct for returning the return air Rp from the perimeter zone P to the indoor unit 2a, and these return airs Ri, Rp are individually temperature-controlled in the indoor unit 2a. Conditioned air is supplied to each zone I, P as air supply Si, Sp for each zone I, P via each separate air supply duct 4a, 4b.

In the interior zone I and the perimeter zone P, reference numeral 5 indicates the amount of air supplied to each zone I, P so that the zone temperatures tzi, tzp can be adjusted / maintained to the respective target values based on the zone temperature detection. It is a variable air volume device that automatically adjusts.

Further, 6 is the air supply Si, S to each zone I, P.
The outside air duct for taking in the outside air O mixed with p is an exhaust duct for discharging a part of the return air Ri, Rp from each zone I, P to the outside. Ventilate each zone I and P together with cooling and heating.

As for the air conditioner, as shown in FIG. 2, in the outdoor unit 2a, the interior heat exchanger 8a for adjusting the temperature of the air supply Si to the interior zone I and the temperature of the air supply Sp for the perimeter zone P are adjusted. An outdoor unit equipped with a heat exchanger 8b for a perimeter and a compressor Cm, while the outdoor unit 2b circulates a refrigerant between the outdoor unit 2b and the heat exchangers 8a, 8b on the indoor unit side via refrigerant pipes 1a, 1b. It is equipped with a heat exchanger 8c.

In the indoor unit 2a, 9a, 9
b is the air supply duct 4 for supplying the air supply Si, Sp to each zone I, P
The air supply fans ex1 and ex2 that are sent to a and 4b are the first
And second electronic expansion valves, v1 and v2 are first and second solenoid valves, vc is a four-way valve, vs is a check valve, ac is an accumulator, and, in the outdoor unit 2b, 9c is an outdoor heat exchanger. 8c is a fan that ventilates the outside air O, which is a target for releasing and absorbing heat.

The heat pump circuit H having the compressor Cm, the heat exchangers 8a, 8b and 8c on the indoor unit side and the outdoor unit side, the first and second expansion valves ex1 and ex2, and the accumulator ac as main constituent devices is The following cooling operation, heating operation, and cooling / heating parallel operation can be selectively implemented by switching between the four-way valve vc and the first and second solenoid valves v1 and v2. In the cooling operation, both zones I and P are operated.
In the heating operation, both zones I and P are heated, while in the heating / cooling parallel operation, the interior zone I is heated.
It is possible to simultaneously perform cooling for the air conditioner and heating for the perimeter zone P.

(B) Cooling operation As shown in FIG. 2, the first electromagnetic valve v1 is closed and the second electromagnetic valve v1 is closed.
While the solenoid valve v2 is opened, the four-way valve vc is switched to the cooling side switching state shown in the figure to operate the compressor Cm, and the high pressure refrigerant gas discharged from the compressor Cm (indicated by a thick black line in the figure) is discharged. By supplying to the outdoor heat exchanger 8c of the outdoor unit 2b via the transit refrigerant pipe 1a, the outdoor heat exchanger 8c functions as a condenser to radiate heat to the outside air O.

The condensed refrigerant liquid sent from the outdoor heat exchanger 8c (shown by a thick line with hatching in the figure) is returned to the indoor unit 2a through the other transit refrigerant pipe 1b, and this return refrigerant liquid is diverted. One of the split refrigerants is supplied to the interior heat exchanger 8a via the first electronic expansion valve ex1, and the other split refrigerant is supplied to the perimeter heat exchanger 8b via the second electronic expansion valve ex2. As a result, both the interior heat exchanger 8a and the perimeter heat exchanger 8b are caused to function as evaporators, and the supply air Si and Sp are cooled and adjusted in temperature.

Then, the low-pressure refrigerant gas (shown by a white thick line in the figure) sent from each of the interior heat exchanger 8a and the perimeter heat exchanger 8b is merged,
The compressor Cm is sucked through the accumulator ac.

(B) Heating operation As shown in FIG. 3, the first electromagnetic valve v1 is closed and the second electromagnetic valve v1 is closed.
The solenoid valve v2 is opened, the compressor Cm is operated with the four-way valve vc in the heating side switching state shown in the figure, and the high-pressure refrigerant gas discharged from the compressor Cm (shown by a thick black line in the figure) is discharged. The flow is split and one of the split refrigerants is supplied to the interior heat exchanger 8a, and the other of the split refrigerant is supplied to the perimeter heat exchanger 8b, whereby the interior heat exchanger 8a and the perimeter are supplied. Both of the heat exchangers 8b are made to function as a condenser to control the heating temperature of each supply air Si, Sp.

The condensed refrigerant liquid (indicated by a thick hatched line in the figure) sent from each of the interior heat exchanger 8a and the perimeter heat exchanger 8b is the first and second electronic expansion valves ex1. , Ex2 are passed and then merged and supplied to the outdoor heat exchanger 8c of the outdoor unit 2b via the transition refrigerant pipe 1b, whereby the outdoor heat exchanger 8c functions as an evaporator and absorbs heat from the outside air O. To do.

Then, the low-pressure refrigerant gas (shown by the white thick line in the figure) sent from the outdoor heat exchanger 8c is returned to the indoor unit 2a via the other crossover refrigerant pipe 1a, and the compressor via the accumulator ac. Let Cm inhale.

(C) Cooling / heating parallel operation As shown in FIG. 4, the first solenoid valve v1 is opened and the second solenoid valve v1 is opened.
While the solenoid valve v2 is closed and the four-way valve vc is switched to the cooling side switching state similar to the cooling operation as shown in the figure, the compressor Cm is operated, and the high pressure refrigerant gas discharged from the compressor Cm (black-painted in the figure). (Indicated by the thick line) to supply one of the divided refrigerants to the perimeter heat exchanger 8b, and also to pass the other divided refrigerant across the refrigerant pipe 1a to the outdoor heat exchanger 8c of the outdoor unit 2b. To heat the supply air Sp to the perimeter zone P so that the perimeter heat exchanger 8b functions as a condenser, and at the same time, the outdoor heat exchanger 8c functions as a condenser to the outside air O. Dissipate heat.

The condensed refrigerant liquid sent from the outdoor heat exchanger 8c (indicated by a thick line with hatching in the figure) is returned to the indoor unit 2a through the other transit refrigerant pipe 1b, and the returned refrigerant liquid and the perimeter are supplied. Refrigerant liquid sent out from the heat exchanger 8b for use (indicated by thick line with hatching in the figure)
And are supplied to the interior heat exchanger 8a via the first electronic expansion valve ex1, whereby the interior heat exchanger 8a functions as an evaporator to cool the supply air Si to the interior zone I. Adjust.

Then, the low-pressure refrigerant gas (shown by the white thick line in the figure) sent from the interior heat exchanger 8a is sucked into the compressor Cm via the accumulator ac.

[Other Embodiments] Next, other embodiments will be listed.

In the above-described embodiment, the portion of the refrigerant circuit where the second solenoid valve v2 is provided and the second electronic expansion valve ex2.
May be omitted and a dedicated machine for parallel cooling and heating may be used.

In the above embodiment, the indoor unit 2
The heat exchanger 8a for interior in a is made to function as an evaporator as a first heat exchanger, and the heat exchanger 8b for perimeter is
In the cooling / heating parallel operation, an example in which the outdoor heat exchanger 8c in the outdoor unit 2b functions as the condenser while the condenser functioning as the second heat exchanger is shown is shown, instead of this, as shown in FIG. The second heat exchanger 8b in the indoor unit 2a stores the high-pressure refrigerant gas discharged from the compressor Cm in the indoor unit 2a (shown by a thick black line in the drawing).
To make the second heat exchanger 8b function as a condenser, and to divert the condensed refrigerant liquid (indicated by a thick line with hatching in the figure) sent from the second heat exchanger 8b,
One of the split refrigerants is supplied to the first heat exchanger 8a via the first expansion valve ex1, and the other split refrigerant is supplied to the second expansion valve e.
x2 and the outdoor unit 2b through the transition refrigerant pipe 1a
The first heat exchanger 8a and the outdoor heat exchanger 8c function as an evaporator by supplying the outdoor heat exchanger 8c to the low-pressure refrigerant gas (in the figure) , Indicated by a thick white line) is the other crossover refrigerant pipe 1
It returns to the indoor unit 2a via b, and this return refrigerant and the first
The low-pressure refrigerant gas sent from the heat exchanger 8a may be merged and sucked into the compressor Cm via the accumulator ac.

Further, in parallel with the evaporator function of the first heat exchanger 8a and the condenser function of the second heat exchanger 8b in the indoor unit 2a, the outdoor heat exchanger 8c of the outdoor unit 2b.
The condenser function (that is, the cooling / heating parallel operation state in the above-described embodiment), the evaporator function of the first heat exchanger 8a in the indoor unit 2a, and the second heat exchanger 8
The outdoor heat exchanger 8c of the outdoor unit 2b may be selectively operated by switching between the state in which the outdoor heat exchanger 8c functions as an evaporator (that is, the operating state shown in FIG. 5 described above) in parallel with the condenser function in b. .

Further, it may be possible to switch to the operating states shown in FIGS. 6, 7, 8 and 9 as described below.

That is, as shown in FIG. 6, the compressor Cm
The high-pressure refrigerant gas (thick black line) discharged from the outside, through the refrigerant pipe 1a, the outdoor heat exchanger 8 of the outdoor unit 2b.
c to supply the outdoor heat exchanger 8c with a condenser function,
Then, the condensed refrigerant liquid (thick line hatched) sent from the outdoor heat exchanger 8c is transferred to another crossover refrigerant pipe 1
b to return to the indoor unit 2a, and return the refrigerant liquid to the two heat exchangers 8a in the indoor unit 2a,
8b is split-flow-supplied via expansion valves ex1 and ex2,
An operating state in which both the heat exchangers 8a and 8b on the indoor unit 2a side function as an evaporator.

As shown in FIG. 7, the high-pressure refrigerant gas (black thick line) discharged from the compressor Cm is supplied to the indoor unit 2a.
Of the two indoor heat exchangers 8a and 8b in the above-mentioned indoor unit 2a so that the heat exchangers 8a and 8b on the indoor unit 2a side both function as a condenser.
The condensed refrigerant liquid (thick line with hatching) sent from the a-side heat exchangers 8a and 8b passes through the expansion valve ex3 and the crossover refrigerant pipe 1b, and the outdoor heat exchanger 8 of the outdoor unit 2b.
c to supply the outdoor heat exchanger 8c with an evaporator function,
An operating state in which the low-pressure refrigerant gas (white thick line) sent from the outdoor heat exchanger 8c is returned to the indoor unit 2a via another crossover refrigerant pipe 1a.

As shown in FIG. 8, the high pressure refrigerant gas (black thick line) discharged from the compressor Cm is supplied to the indoor unit 2a.
In the figure, the condensed refrigerant liquid is supplied to the heat exchanger 8b on the right side in the figure to cause the heat exchanger 8b on the right side to function as a condenser, and the condensed refrigerant liquid sent from the heat exchanger 8b on the right side (thick line with hatching). Is supplied to the heat exchanger 8a on the left side in the figure of the indoor unit 2a via the expansion valve ex1 to separate the heat exchanger 8a on the left side.
To function as an evaporator, and the other split refrigerant is used as an expansion valve ex3.
And the outdoor heat exchanger 8 by supplying the outdoor heat exchanger 8c in the outdoor unit 2b via the transition refrigerant pipe 1b.
c is made to function as an evaporator, and the low-pressure refrigerant gas (white thick line) sent from the outdoor heat exchanger 8c is returned to the indoor unit 2a via another crossover refrigerant pipe 1a, and this return refrigerant and the indoor unit 2a In the operating state, the low-pressure refrigerant gas (white thick line) from the left-side heat exchanger 8a functioning as an evaporator is merged and sucked into the compressor Cm.

As shown in FIG. 9, the high-pressure refrigerant gas (black thick line) discharged from the compressor Cm is diverted, and one of the diverted refrigerant is supplied to the heat exchanger 8a on the left side in the figure of the indoor unit 2a. By doing so, the heat exchanger 8a on the left side is made to function as a condenser, and the other split-flow refrigerant is supplied to the outdoor heat exchanger 8c of the outdoor unit 2b via the refrigerant pipe 1a so that the outdoor heat exchanger 8c. The condenser function,
Then, the condensed refrigerant liquid (hatched thick line) sent from the outdoor heat exchanger 8c is returned to the indoor unit 2a through another crossover refrigerant pipe 1b, and the return refrigerant and the indoor unit 2a function as a condenser. Left heat exchanger 8a
And the condensed refrigerant liquid from are supplied to the heat exchanger 8b on the right side in the figure in the indoor unit 2a via the expansion valve ex2, and the heat exchanger 8b on the right side functions as an evaporator.

In FIG. 6, FIG. 7, FIG. 8 and FIG.
Indicates a solenoid valve for circuit switching, and vs indicates a check valve.

In the practice of the present invention, instead of the embodiment in which the cooling with the first heat exchanger 8a that functions as an evaporator and the heating with the second heat exchanger 8b that functions as a condenser are carried out in parallel, they function as an evaporator. A second heat exchanger 8a that cools and dehumidifies air and uses the cooled dehumidified air as a condenser.
The present invention may be applied to the dehumidification operation of reheating with the heat exchanger 8b, and the evaporator function of the first heat exchanger 8a, the condenser function of the second heat exchanger 8b, and the outdoor function. The purpose of the condenser function or the evaporator function of the heat exchanger 8c may be any one.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view showing the configuration of air conditioning equipment.

FIG. 2 is a refrigerant circuit diagram showing a cooling operation.

FIG. 3 is a refrigerant circuit diagram showing heating operation.

FIG. 4 is a refrigerant circuit diagram showing cooling / heating parallel operation.

FIG. 5 is a refrigerant circuit diagram showing another embodiment.

FIG. 6 is a refrigerant circuit diagram showing another embodiment.

FIG. 7 is a refrigerant circuit diagram showing another embodiment.

FIG. 8 is a refrigerant circuit diagram showing another embodiment.

FIG. 9 is a refrigerant circuit diagram showing another embodiment.

FIG. 10 is a refrigerant circuit diagram showing a conventional example.

FIG. 11 is a refrigerant circuit diagram showing a conventional example.

FIG. 12 is a refrigerant circuit diagram showing another conventional example.

FIG. 13 is a refrigerant circuit diagram showing another conventional example.

[Explanation of Codes] 1a, 1b Crossover refrigerant pipe 2a Indoor unit 2b Outdoor unit 8a First heat exchanger 8b Second heat exchanger 8c Outdoor heat exchanger Cm Compressor

Claims (1)

[Claims] 1. A first structure in which a fuselage is divided into an indoor unit (2a) and an outdoor unit (2b) which are connected to each other by crossover refrigerant pipes (1a), (1b) to function as an evaporator.
The heat exchanger (8a) and the second heat exchanger (8) which functions as a condenser in parallel with the evaporator function of the first heat exchanger (8a).
b) and the compressor (Cm) to the indoor unit (2
a) and is condensed in parallel with the evaporator function of the first heat exchanger (8a) and the condenser function of the second heat exchanger (8b) by refrigerant circulation by the compressor (Cm). A separate type heat pump device in which the outdoor unit (2b) is equipped with an outdoor heat exchanger (8c) that functions as a container or an evaporator.