JPH10103809A - Water cooled engine-driven refrigerant circulation type heat transfer apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold engine cooling performance preferable by preventing invasion of refrigerant to a cooling water passage even when a pipe of a heat exchanger is cracked while heating the refrigerant of a refrigerant circuit by effectively utilizing heat of warm water after cooling the engine. SOLUTION: The water cooled engine-driven refrigerant circulation type heat transfer apparatus comprises a liquid circulating circuit 70 for circulating heat exchange liquid separately from a cooling water circuit 50 of a water cooled engine 2, a first heat exchanger 57 for heat exchanging the water of the circuit 50 with the liquid of the circuit 70, and a second heat exchanger 33 for heat exchanging the liquid led from the circuit 70 with refrigerant in an accumulator 21 of a refrigerant circuit 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerant circulation type heat exchanger having a refrigerant circuit for circulating refrigerant by a compressor, a water-cooled engine for driving the compressor, and a cooling water circuit for circulating engine cooling water. The present invention relates to a mobile device.

[0002]

2. Description of the Related Art A refrigerant circuit for circulating a refrigerant is provided with a compressor, a condenser, an expansion valve and an evaporator. The refrigerant compressed by the compressor is condensed and liquefied while radiating heat in the condenser, and then expanded by the expansion valve. A refrigerant-circulating heat transfer device that is evaporated after being absorbed by an evaporator and then returned to a compressor is generally known as a heat pump device such as a refrigerating device or an air conditioner.

Further, a compressor in such a refrigerant circulation type heat transfer device is driven by a water-cooled engine, a cooling water circuit for circulating engine cooling water is provided for the engine, and an engine cooling system flowing through the cooling water circuit is provided. Utilizing the heat of the subsequent hot water to heat the refrigerant in an accumulator or the like in the refrigerant circuit, thereby promoting the vaporization of the refrigerant in the accumulator or the like and giving heat to a heat utilization means such as an external water heater. Is also considered.

For example, Japanese Patent Application Laid-Open No. 7-280385 discloses a cooling water circuit in which a radiator, an accumulator heat exchanger for exchanging heat between a refrigerant in an accumulator in a refrigerant circuit and engine cooling water, and a hot water tank are provided. A hot water tank heat exchanger for exchanging heat between the internal water and the engine cooling water is provided.

[0005]

In the conventional apparatus as described above, the cooling water of the engine is guided to the heat exchanger in the accumulator in the refrigerant circuit, and the heat exchange between the engine cooling water and the refrigerant is performed directly. However, if a pipe crack occurs in the heat exchanger, the refrigerant enters the engine cooling water passage because the pressure of the refrigerant is higher than the pressure of the engine cooling water. Then, the refrigerant that has entered the cooling water passage expands, becomes a gas, enters the cooling water, and flows into the cooling water circulation pump, so that the circulation of the cooling water is significantly impaired, and the engine cooling performance is adversely affected. May cause.

The present invention has been made in view of the above circumstances, and uses the heat of the hot water after cooling the engine effectively to heat the refrigerant in the refrigerant circuit, and even if the pipe of the heat exchanger has a crack or the like. It is an object of the present invention to provide a water-cooled engine-driven refrigerant circulation heat transfer device capable of maintaining good engine cooling performance without refrigerant entering a cooling water passage.

[0007]

SUMMARY OF THE INVENTION The present invention provides a refrigerant circuit for circulating refrigerant discharged from a compressor through a condenser, an expansion valve, and an evaporator so as to return to the compressor, and a water-cooled engine for driving the compressor. And a cooling water circuit for circulating engine cooling water, wherein a liquid circulation circuit for circulating a heat exchange liquid is provided separately from the cooling water circuit. A first heat exchanger for exchanging heat between the engine cooling water and the heat exchange liquid is provided at a location corresponding to the circuit and the liquid circulation circuit, and a heat exchanger for heat exchange guided from the liquid circulation circuit is provided. A second heat exchanger for exchanging heat between the liquid and the refrigerant in the refrigerant circuit is provided.

According to this structure, the heat of the engine coolant is supplied from the first heat exchanger to the second heat exchanger via the liquid circulation circuit, whereby the refrigerant in the refrigerant circuit is heated, and Is promoted. In addition, since the cooling water circuit and the refrigerant circuit are separated independently from each other, and the engine cooling water is not directly guided to the second heat exchanger, even when a pipe is cracked or the like, the refrigerant is cooled. Do not invade.

In this apparatus, a heat exchanger for heat radiation is provided in the cooling water circuit separately from the first heat exchanger, or in the liquid circulation circuit separately from the first and second heat exchangers. A heat exchanger for heat dissipation may be provided. In this case, if a radiator is provided as a heat exchanger for heat dissipation,
Direct or indirect heat radiation from the engine cooling water is sufficiently performed, and the cooling performance is enhanced.

The liquid circulation circuit may be provided with a heat exchanger for absorbing heat separately from the first and second heat exchangers. in this case,
If the heat exchanger for absorbing heat constitutes a condenser in the refrigerant circuit, the function of the condenser in the refrigerant circuit can be favorably obtained. And also in this case, since the engine cooling water is not directly guided to the heat exchanger constituting the condenser,
Refrigerant does not enter the cooling water circuit.

It is preferable to use water as the heat exchange liquid circulating in the liquid circulation circuit. In this case, a hot water storage tank may be connected to the liquid circulation circuit and used for hot water supply or the like. For example, a city water pipe may be connected to the hot water storage tank, and a hot water outlet may be provided in the hot water storage tank. Further, the water in the hot water storage tank may be circulated to a heat exchanger for heat radiation in the liquid circulation circuit.

As the heat exchanger for heat radiation provided in the liquid circulation circuit, for example, a floor heating device may be provided. In addition, if a plurality of heat exchangers for heat dissipation provided in the liquid circulation circuit are provided, for example, heat exchangers for heat dissipation can be installed in each chamber. In this case, it is preferable that at least one of the plurality of heat exchangers for heat radiation is a floor heating device.

[0013]

Embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show an air conditioner as an example of a refrigerant circulation type heat transfer device of the present invention. This air conditioner comprises an outdoor unit 1A shown in FIG. 1 and each room shown in FIG. It comprises a plurality of indoor units 1B arranged for each R. The air conditioner includes a water-cooled gas engine 2 (hereinafter abbreviated as engine 2), a compressor 5 connected to an output shaft 3 of the engine 2 and driven by the engine 2, and a refrigerant circuit for circulating a refrigerant. 10 and a cooling water circuit 50 for cooling the engine 2, and a liquid circulation circuit 70 for circulating a heat exchange liquid separately from the cooling water circuit 50.

The refrigerant circuit 10 passes the refrigerant discharged from the compressor 5 through a condenser, an expansion valve, and an evaporator.
To form a closed circuit for circulating so as to return to. In the present embodiment, in order to configure an air conditioner capable of switching between cooling and heating and capable of cooling and heating a plurality of rooms, the air conditioner includes a four-way valve 11 for switching a refrigerant circulation path, and a plurality of indoor heat exchangers 41. And a base circuit 12 constituting a circuit from the compressor 5 to the four-way valve 11, and an outdoor circuit 1 connected to the base circuit 12 via the four-way valve 11.
3 and a plurality of indoor circuits 14 connected to the outdoor circuit 13 constitute a refrigerant circuit 10.

The base circuit 12 includes a discharge line 15 connecting the discharge port of the compressor 5 and the first port 11a of the four-way valve 11, a second port 11b of the four-way valve 31, and a suction port of the compressor 5. And a suction side line 16 for connecting
An oil separator 17 is provided on the discharge side line 15, and an accumulator 21 is provided on the suction side line 16.

The oil separator 17 separates oil mixed in the refrigerant passing through the discharge side line 15.
The oil is supplied from the oil separator 17 to the strainer 18.
In addition, a line 20 provided with a capillary tube 19 returns the suction side line 16 to the downstream side near the compressor suction port.

A gas-phase and a liquid-phase refrigerant are contained in an accumulator 21 installed in the suction line 16. A line 16a for leading the refrigerant from the four-way valve 11 to the accumulator 21 and a line 16b for leading the gas-phase refrigerant from the accumulator 21 are connected to an upper portion of the accumulator 21, and a line 16c bent downward to the line 16b.
The downstream line 16 d that follows is connected to the suction port of the compressor 3. The lower part of the accumulator 21 is connected to the lower end of the line 16c via an oil return line 22 having a strainer 23 and an on-off valve 24.

Lines 25 and 26 are connected to the intermediate portion of the accumulator 21 at upper and lower positions, and strainers 27 and 28 are connected to the lines 25 and 26, respectively.
And capillaries 29, 30 are interposed, and each line 2
The downstream ends of 5, 26 are connected to the line 16c. Temperature sensors 31, 32 for lines 25, 26
Are provided, and the temperature sensor 31 and the line 32
The liquid level in the accumulator 21 is detected by detecting the temperature of the refrigerant in the accumulators 5 and 26.

Further, in the accumulator 21, a heat exchanger 3 for heating the refrigerant in the accumulator 21 is provided.
3 are provided.

The line 13a of the outdoor circuit 13 is connected to the third port 11c of the four-way valve 11.
An outdoor heat exchanger 35 is provided in 3a, and a heat exchange unit 36 for performing heat exchange with the liquid circulation circuit is provided in parallel with the outdoor heat exchanger 35. This heat exchange unit 36 is connected to the line 13
A three-way valve 37 is provided at a location connected to a.
A joint 38 is connected to an end of the line 13a.

A line 13b of the outdoor circuit 13 is connected to the fourth port 11d of the four-way valve 11, and a joint 39 is connected to an end of this line.

On the other hand, as shown in FIG.
An indoor heat exchanger 41 disposed in each room R and an electronic expansion valve 42 connected thereto are provided. The electronic expansion valve 42 is connected to the line 14 a connected to the joint 38 and connected to the joint 39. The indoor heat exchanger 41 is connected to the line 14b. A temperature sensor 43 for detecting a refrigerant temperature is provided between the electronic expansion valve 42 and the indoor heat exchanger 41.

The cooling water circuit 50, as shown in FIG.
, And an exhaust gas heat exchanger 53 provided in a muffler of an exhaust passage. The cooling water passage 51a led out from the discharge side of the cooling water circulation pump 54 is provided with the exhaust gas heat exchanger 53 and the engine side. A cooling water passage 51 b is connected to the cooling water inlet of the water jacket 52 via a pump 55, and a cooling water passage 51 b is connected to the cooling water outlet of the water jacket 52 via a thermostat 56.

A heat exchanger 57 (a first heat exchanger in the claims) is connected to the cooling water passage 51b.
Further, the pump 54 is connected to the heat exchanger 57 via a cooling water passage 51c.

A water inlet 60 having a built-in pressure valve is connected to the cooling water passage 51c. As shown in FIG. 3, the water inlet 60 includes a water supply cylinder 61 communicating with the cooling water passage, a cap 62 for opening and closing the upper end opening of the water supply cylinder 61, and a pressure valve 63 disposed on the cap 62. ing. This pressure valve 63 is
The valve body 63a opens and closes a valve seat opening 61a formed in an intermediate portion of the water supply cylinder 61, and the valve body 63a is urged in a closing direction by a spring 63b. When the pressure in the cooling water passage exceeds the valve opening pressure, the pressure valve 63 opens to release the pressure, thereby regulating the maximum pressure in the cooling water passage. Usually, the valve opening pressure (the maximum pressure in the cooling water passage) is set to about 1.5 kgf / cm ² .

As shown in FIG. 1, the liquid circulation circuit 70 includes a heat exchanger on the side of the cooling water circuit 50 and a hot water storage tank 72.
And a heat exchanger 36 on the outdoor circuit 13 side, the water flowing out of the hot water storage tank 72 is pressure-fed by the pump 73. The hot water storage tank 72 passes through the heat exchanger 36 on the outdoor circuit 13 side and the heat exchanger 57 on the cooling water circuit 50 side.
To return to.

The hot water storage tank 72 is connected to a liquid circulation passage 74 for the heat exchanger 33 in the accumulator 21 of the refrigerant circuit 10, and this passage 74 is connected to the heat exchanger 33 in the accumulator 21. , Passage 7
The hot water is circulated between the hot water storage tank 72 and the heat exchanger 21 by providing the pump 75 in the hot water storage tank 4.

Further, in the hot water storage tank 72, a city water introduction passage 7 provided with an on-off valve 77 and a check valve 78 is provided.
6, a radiator 80 and a circulating passage 79 for radiating the pump 81, a passage 82 for supplying heat to various heat utilization devices, and the like are connected. A pump 83 is provided in the passage 82.

As shown in FIG. 2, the passage 82 is provided over a range corresponding to the plurality of rooms R, and a branch portion is introduced into each room R and connected to heat utilization equipment.
The floor heater 85, the instant water heater 86, the hot water tap 87, the heater 88 and the like are connected.

According to the apparatus of the present embodiment as described above,
In the refrigerant circuit, one of the outdoor heat exchanger 35 and the indoor heat exchanger 41 is a condenser, and the other is an evaporator, by switching the four-way valve 11 according to cooling and heating. The refrigerant discharged from the compressor 5 is a condenser,
It is circulated so as to return to the compressor 5 via the expansion valve and the evaporator.

That is, during the cooling operation, the first port 11a and the third port 11c of the four-way valve 11 are connected, and the fourth port 11d and the second port 11b are connected. Thereby, as shown by solid arrows in FIGS. 1 and 2, the refrigerant discharged from the compressor 5 driven by the engine 2 to the discharge side line 15 passes through the four-way valve 11,
The liquid is guided to the outdoor heat exchanger 35 serving as a condenser, where the heat is radiated and liquefied, and then sent from the line 13a to each indoor unit 1B through the joint 38 and the line 14a.
An indoor heat exchanger 41 serving as an evaporator through an electronic expansion valve 42
, Where heat is absorbed and cooling is performed. Then, it flows through the line 14b, the joint 39, and the line 13b, passes through the four-way valve 11, flows into the suction side line 16, and is returned to the compressor 5.

During the heating operation, the first port 11a and the fourth port 11d of the four-way valve 11 are connected, and the third port 11c and the second port 11b are connected. As a result, the refrigerant discharged from the compressor 5 driven by the engine 2 to the discharge line 15 flows from the four-way valve 11 to the line 13 as indicated by a broken line arrow in FIGS.
b, the joint 39, and the line 14b are sent to each indoor unit 1B, guided to the indoor heat exchanger 41 serving as a condenser, where they are radiated and liquefied, and are heated by the condensed heat. Then, via the electronic expansion valve 42, the line 14a,
After passing through the joint 38 and the line 13a to the outdoor heat exchanger 35 serving as an evaporator, where the heat is absorbed and vaporized, it flows through the four-way valve 11 to the suction side line 16 and passes through the accumulator 21 to the compressor 5. Is returned to.

The heat of the hot water after engine cooling is transferred from the cooling water passage 50 through the heat exchanger 57, the passage 71 of the liquid circulation circuit 70, the hot water storage tank 72, and the passage 74 to the heat exchanger provided in the accumulator 21. 33, the liquid-phase refrigerant in the accumulator 21 is heated to promote vaporization. Thereby, the heating capacity in cold weather can be improved.

By the way, in the heat exchanger 33 provided in the accumulator 21, when a crack or the like of the pipe occurs,
Although the refrigerant may leak to the passage 74 side, according to the device of the present embodiment, even in such a case, the cooling system of the engine 2 is not significantly affected, and the engine 2
Reliability is ensured.

That is, the engine cooling water is supplied from the cooling water circuit 50 to the heat exchanger 33 of the accumulator 21 as in the prior art.
, The pressure of the cooling water circuit 50 becomes 1.5
Since they are kept below about kgf / cm ² higher in refrigerant pressure in the refrigerant circuit 10 than this, refrigerant expands enters into the cooling water circuit 50 when a crack or the like of the pipe has occurred, cooling Since the flow of water is significantly impaired, the cooling performance of the engine 2 for the engine 2 deteriorates.

On the other hand, in the apparatus of the present embodiment, the heat of the engine cooling water is temporarily given to the water of the liquid circulation circuit 70 by the heat exchanger 57, and the water from the hot water storage tank 72 of the liquid circulation circuit 70 is accumulated in the accumulator. 21 is supplied to the heat exchanger 33, even if the pipes of the heat exchanger 33 are cracked or the like, the refrigerant only enters the passage 74 and reaches the cooling water circuit 50 of the engine. Do not invade. The cooling water circuit 50 and the liquid circulation circuit 70
Is small, and water is circulating in both cases. Therefore, even if the pipes of the heat exchanger 57 between them are cracked and some leakage occurs, the cooling water circuit 50
The engine cooling effect of the cooling water does not change suddenly, and reliability is ensured.

The passage of the liquid circulation circuit 70 also passes through a heat exchanger 36 provided in the outdoor circuit 13 of the refrigerant circuit 10, so that the heat exchanger 36 effectively functions as a condenser or an evaporator.

That is, the heat exchanger 36 is provided in parallel with the outdoor heat exchanger 35, and serves as a condenser during cooling and as an evaporator during heating. It becomes a heat exchanger for absorbing heat that receives heat, and a heat exchanger for heat dissipation that gives heat to the refrigerant during heating. The refrigerant circulation ratio between the outdoor heat exchanger 35 and the heat exchanger 36 is adjusted by the three-way valve 37, so that the heat exchange with the outside air in the outdoor heat exchanger 35 and the liquid circulation circuit in the heat exchanger 36 are performed. The heat exchange with the water 70 is efficiently performed.
Therefore, both the outdoor heat exchanger 35 and the heat exchanger 36 exhibit a good function as a condenser during cooling and a good function as an evaporator during heating.

Further, the heat given to the water in the liquid circulation circuit 70 from the cooling water of the engine through the hot water storage tank 72,
Floor heater 85 of each room from passage 82, instantaneous water heater 8
6, hot water tap 87, heater 88 and the like. Thus, the engine waste heat extracted from the engine cooling water is effectively used for hot water supply, floor heating, and the like.

On the other hand, since the heat of the cooling water is given to the water in the liquid circulation circuit 70 by the heat exchanger 57 provided in the above-mentioned cooling water circuit 50, the effect of cooling the engine cooling water can be obtained well. In particular, the liquid circulation circuit 70 includes a heat exchanger 33 that gives heat to the refrigerant in the accumulator 21,
A heat exchanger 36 for heat dissipation during heating is provided, a heat utilization device such as a floor heater 85 is connected via a hot water supply tank 72, and a radiator 80 for heat dissipation is also connected. The heat of the water is released to these parts indirectly via the liquid circulation circuit 70. Therefore, heat radiation and cooling of the engine cooling water are sufficiently performed.

Further, since the cooling water circuit 50 of the engine is a closed loop and the cooling water of the engine is not directly used for hot water supply or the like, the cooling water does not decrease due to the hot water supply or the like. Performance is well maintained. The heat exchanger 33 or the heat exchanger 36
In order to prevent the refrigerant from being mixed into the hot water in the hot water storage tank 72 when the pipe is cracked, the upstream side of the pump 73 of the passage 71 and the passage c, and the downstream side of the heat exchanger 57 of the passage 71 and the passage b Are connected in the hot water storage tank 72, respectively, and
This connection may be used as a heat exchanger with hot water in the hot water storage tank 72. At this time, the pump 75 can be eliminated.

Another embodiment of the apparatus of the present invention will be described with reference to FIG. The same parts as those of the embodiment shown in FIG.

In this figure, the cooling water circuit 50 of the engine 2 has substantially the same configuration as that of the embodiment shown in FIG. 1, and a heat exchanger 57 between the cooling water circuit 50 and the liquid circulation circuit 70 is provided. A radiator 91 as a heat release portion is provided in parallel with the heat exchanger 57 for the engine 2, and a linear three-way valve 92 is provided at a branch point between the passage on the radiator 91 side and the passage on the heat exchanger 57 side. ing. The linear three-way valve 92 adjusts the flow rate of the cooling water to the heat exchanger 57 and the radiator 91 according to the cooling water temperature and the like. Note that a thermostat may be provided instead of the linear three-way valve 92.

The liquid circulating circuit 70 has a passage 93 connected to the heat exchanger 33 of the accumulator 21 and a passage 94 for guiding water to an external heat utilization device. They are branched and joined together so as to be connected in parallel to the heat exchanger 57. Further, a pump 95 for circulating water in the liquid circulation circuit 70 is provided, and a linear three-way valve 96 is provided at a branch portion of the passages 93 and 94 to adjust a flow ratio of water to the passages 93 and 94. It is possible to do.

A circulation passage 99 connected to a hot water supply tank 98 and provided with a water pump 97 is connected to the passage 94. In this embodiment, a plurality of outdoor units 1A are provided, and the passage 94 of the liquid circulation circuit 70 in each outdoor unit 1A is connected to the circulation passage 99. A passage 82 is connected to the hot water supply tank 98 so as to connect a heat utilization device as shown in FIG.

According to this embodiment, the heat extracted from the cooling water after cooling the engine is supplied to the heat exchanger 33 of the accumulator 21 via the liquid circulation circuit 70 and is supplied to various heat utilization devices. Since the cooling water circuit 50 is independent of the heat exchanger 33 of the accumulator 21, the refrigerant does not enter, and the cooling water circuit 50 has a closed loop, so that the cooling water is not consumed for hot water supply or the like. Therefore, the operation and effect such as maintaining the engine cooling performance well are the same as in the above embodiment. In the present embodiment, since the engine waste heat from the plurality of outdoor units 1A is collected in one hot water supply tank 98, the hot water supply capacity is enhanced.

In each of the above embodiments, city water is used as the heat exchange liquid circulating in the liquid circulation circuit. However, the present invention is not limited to this, and any liquid having a boiling point equal to or higher than the engine cooling water may be used. I just need.

Further, the heat utilization equipment utilizing the heat supplied from the liquid circulation circuit is not limited to the one shown in FIG. 2, and various equipments for hot water supply, heating, heating, heat keeping and the like can be adopted.

[0050]

According to the present invention, the cooling water circuit of the engine in the water-cooled engine driven refrigerant circulation type heat transfer device is provided separately.
A liquid circulation circuit for circulating the liquid for heat exchange is provided, and a first heat exchanger for performing heat exchange between the cooling water in the cooling water circuit and the liquid for heat exchange in the liquid circulation circuit is provided. Since the second heat exchanger that performs heat exchange between the introduced heat exchange liquid and the refrigerant in the refrigerant circuit is provided, the refrigerant in the refrigerant circuit can be heated using the heat of the engine cooling water. Thus, even when the pipe of the heat exchanger has a crack or the like, it is possible to reliably prevent the refrigerant from entering the cooling water circuit. Therefore, maintaining good engine cooling performance,
Engine reliability can be ensured.

Further, if a hot water storage tank is connected to the liquid circulation circuit and a floor heating device or the like is provided as a heat exchanger for radiating heat in the liquid circulation circuit, the heat of the liquid circulation circuit can be removed from the engine cooling water. The heat given to the replacement liquid can be effectively used for hot water supply, floor heating, and the like.

[Brief description of the drawings]

FIG. 1 is an overall circuit diagram showing an outdoor unit side in an apparatus according to an embodiment of the present invention applied to an air conditioner.

FIG. 2 is a circuit diagram showing an indoor unit side and a liquid circulation circuit of the device.

FIG. 3 is a sectional view of a water inlet;

FIG. 4 is a circuit diagram showing another embodiment of the cooling water circuit and the liquid circulation circuit.

[Explanation of symbols]

 2 water-cooled gas engine 5 compressor 10 refrigerant circuit 11 four-way valve 21 accumulator 33 heat exchanger (second heat exchanger) 35 outdoor heat exchanger 36 heat exchanger 41 indoor heat exchanger 42 electronic expansion valve 50 cooling water circuit 57 Heat exchanger (first heat exchanger) 70 Liquid circulation circuit 72 Hot water supply tank 80, 91 Radiator 85-88 Heat utilization equipment

Claims (13)

[Claims] 1. A refrigerant circuit for circulating refrigerant discharged from a compressor through a condenser, an expansion valve, and an evaporator so as to return to the compressor, a water-cooled engine for driving the compressor, and circulating engine cooling water. In a water-cooled engine driven refrigerant circulation type heat transfer device having a cooling water circuit, a liquid circulation circuit that circulates a heat exchange liquid separately from the cooling water circuit is provided.
A first heat exchanger for performing heat exchange between the engine cooling water and the heat exchange liquid is provided at a position corresponding to the cooling water circuit and the liquid circulation circuit, and is guided from the liquid circulation circuit. A water-cooled engine driven refrigerant circulation heat transfer device, comprising a second heat exchanger for performing heat exchange between the heat exchange liquid and the refrigerant in the refrigerant circuit. 2. The water-cooled engine-driven refrigerant circulation heat transfer device according to claim 1, wherein a heat exchanger for heat radiation is provided in the cooling water circuit separately from the first heat exchanger. 3. The coolant circulation system for a water-cooled engine according to claim 1, wherein a heat exchanger for heat radiation is provided in the liquid circulation circuit in addition to the first and second heat exchangers. Heat transfer device. 4. The heat transfer device according to claim 2, wherein a radiator is provided as a heat exchanger for heat radiation. 5. The water-cooled engine according to claim 1, wherein a heat exchanger for absorbing heat is provided in the liquid circulation circuit in addition to the first and second heat exchangers. Drive refrigerant circulation type heat transfer device. 6. The heat transfer device according to claim 5, wherein the heat exchanger for absorbing heat constitutes a condenser in the refrigerant circuit. 7. The method according to claim 1, wherein water is used as the heat exchange liquid circulating in the liquid circulation circuit.
5. The refrigerant-circulating heat transfer device driven by a water-cooled engine according to any one of the above. 8. The heat transfer device according to claim 7, wherein a hot water storage tank is connected to the liquid circulation circuit. 9. The liquid in the hot water storage tank is circulated to a heat exchanger for heat radiation in the liquid circulation circuit.
A refrigerant-cooled heat transfer device driven by a water-cooled engine according to claim 1. 10. The water-cooled engine-driven refrigerant circulation heat transfer device according to claim 8, wherein a city water pipe is connected to the hot water storage tank, and a hot water outlet is provided in the hot water storage tank. 11. The water-cooled engine driven refrigerant circulation heat transfer device according to claim 3, wherein a floor heating device is provided as a heat exchanger for heat radiation provided in the liquid circulation circuit. 12. The water-cooled engine driven refrigerant circulation heat transfer device according to claim 3, wherein a plurality of heat exchangers for heat radiation provided in the liquid circulation circuit are provided. 13. The heat transfer device according to claim 12, wherein at least one of the plurality of heat exchangers for heat radiation is a floor heating device.