JP2019135423A - Heat pump cold water heat source machine - Google Patents

Abstract

To suppress an increase in an amount of dew condensation generated by the circulation of air in a machine room.SOLUTION: An outdoor unit 2 includes a vertical partition wall 33 for partitioning a blast room 35 and a machine room 36 provided inside a housing 31. A water-refrigerant heat exchanger 11 housed in the machine room 36 is disposed so as to separate the inside of the machine room 36 into a front side space 36a and a back side space 36b, the back side space 36b being a dew condensation room where dew condensation is generated. A compressor 7 is disposed in the front side space 36a. By this configuration, ambient air of the compressor 7 is almost blocked from ambient air of a refrigerant pipe 15, and the ambient air of the compressor 7 is inhibited from being circulated into the refrigerant pipe 15, thereby preventing an increase in an amount of dew condensation.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a heat pump chilled water heat source device that transfers heat between a chilled water circulation circuit connected to an indoor heat exchanger and a refrigerant circulation circuit in a water-refrigerant heat exchanger.

  Conventionally, in this type of heat pump cold water heat source machine, as described in Patent Document 1, there is one in which a refrigerant circulation circuit and a cold water circulation circuit transmit and receive heat with a water-refrigerant heat exchanger.

JP 2014-16112 A

  In the above conventional one, the interior of the housing is partitioned into a blower chamber and a machine chamber by a partition wall, and the compressor, the expansion valve, the water-refrigerant heat exchanger, and the like are provided in the machine chamber. . When heat is absorbed on the refrigerant circuit side, low-temperature refrigerant flows in the refrigerant pipe in the vicinity of the water-refrigerant heat exchanger. Therefore, due to the low temperature, the ambient air around the refrigerant pipe in the machine room is cooled. Therefore, condensation tends to occur in the refrigerant pipe connected to the water-refrigerant heat exchanger. In particular, since the ambient air around the compressor disposed in the machine room is relatively hot, the ambient air around the compressor and the ambient air around the refrigerant pipe are circulated (without being interrupted). There was a problem that a flow of air in which high-temperature air was drawn around the refrigerant pipe occurred, and in particular, the amount of condensation increased.

  In order to solve the above-mentioned problem, according to claim 1 of the present invention, a compressor, an air heat exchanger, an expansion valve, and a water-refrigerant heat exchanger, which are disposed inside a casing, are connected by a refrigerant pipe. In a heat pump chilled water heat source unit that forms a circulation circuit and performs heat transfer between the chilled water circulation circuit having a chilled water pipe connected to an indoor heat exchanger and the refrigerant circulation circuit in the water-refrigerant heat exchanger. A blower chamber provided on one side of the casing and provided with a blower fan for sending outside air to the air heat exchanger; and provided on the other side of the casing, the compressor and the expansion valve And a machine room provided with the water-refrigerant heat exchanger, and a partition wall that partitions the air blowing chamber and the machine room, and the water-refrigerant heat exchanger has a front surface inside the machine room. While dividing into a side space and a back side space, the back side space is As the condensation chamber dew occurs, is arranged, the compressor is one that is located on the front side space.

  According to a second aspect of the present invention, the water-refrigerant heat exchanger is connected to the refrigerant pipe and the cold water pipe on the condensation chamber side.

  According to a third aspect of the present invention, the dew condensation is caused by the water-refrigerant heat exchanger, a part of the partition wall, the other end plate of the air heat exchanger, and a part of the housing. An outer shell surrounding the chamber is configured.

  According to a fourth aspect of the present invention, a dew condensation water receiving member is provided below the water-refrigerant heat exchanger and the dew condensation chamber.

  According to the first aspect of the present invention, the refrigerant circulation circuit and the cold water circulation circuit transmit and receive heat with the water-refrigerant heat exchanger, so that the indoor heat exchanger provided in the cold water circulation circuit absorbs heat into the room. . That is, after the refrigerant of the gas sucked at low temperature and low pressure in the refrigerant circulation circuit is compressed by the compressor to become high temperature and high pressure, it is cooled by the blower fan in the outdoor heat exchanger (condenser). This releases heat to the outside air and changes to a high-pressure liquid. The liquid refrigerant is depressurized by the expansion valve to become a low-pressure liquid, and is then evaporated by the water-refrigerant heat exchanger (evaporator) to be converted into gas, thereby absorbing heat from the cold water circulation circuit side. The chilled water in the chilled water circulation circuit that has absorbed heat (i.e., radiated heat) and has a low temperature is led to the indoor heat exchanger to absorb heat from the indoor air and cool it.

  According to claim 1, the water-refrigerant heat exchanger divides the interior of the machine room into a front side space and a back side space, and the dew condensation occurs in the back side space. It is arranged to be a chamber. And the said compressor is arrange | positioned in the said front side space on the opposite side to the said dew condensation chamber. Thereby, the ambient air of the compressor and the ambient air of the refrigerant pipe are substantially blocked, and the occurrence of the air circulation as described above is suppressed. As a result, an increase in the amount of condensation can be prevented.

  According to claim 2, it is possible to prevent an increase in the amount of condensation that occurs around the refrigerant piping and the cold water piping in the condensation chamber on the back side of the water-refrigerant heat exchanger.

  According to claim 3, by the outer shell formed by the water-refrigerant heat exchanger, a part of the partition wall, an end plate of the air heat exchanger, and a part of the housing, The condensation chamber can be substantially sealed.

  According to the fourth aspect of the present invention, it is possible to receive droplets (condensation water) generated by dew condensation in the dew condensation chamber on the back side of the water-refrigerant heat exchanger, and conduct water appropriately and discharge it.

The whole schematic block diagram of the heat pump cold / hot water machine provided with the outdoor unit of one Embodiment of this invention Schematic representation of the refrigeration cycle during cooling operation of a heat pump water heater Exploded perspective view of outdoor unit The perspective view which looked at the outdoor unit from the diagonally upper part on the right rear side with the inside of the cold / hot water circuit room and the machine room exposed. Plan view showing the main structure of the outdoor unit

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  The whole schematic structure of the heat pump cold / hot water machine concerning this embodiment is shown in FIG. In FIG. 1, this heat pump cold / hot water machine 1 is connected via the outdoor unit 2 (equivalent to a heat pump cold water heat source machine) installed outside, and this outdoor unit 2 and the cold / hot water pipe 3 (equivalent to cold water pipe). An indoor unit 4 installed indoors, a remote controller 5 arranged in the room for inputting / outputting various operation instructions and information, an expansion tank 51 connected to the cold / hot water pipe 3 and arranged outdoors, Have

  Next, a schematic system configuration of the heat pump cold / hot water machine 1 is shown in FIG. In FIG. 2, a heat pump chiller / heater 1 circulates, for example, a synthetic compound gas such as HFC as a refrigerant and circulates a refrigerant circulation circuit 21 that functions as a heat pump and absorbs and dissipates heat outside the room, and circulates, for example, antifreeze as cold / hot water. The indoor air temperature is adjusted by heat exchange between a cold / hot water circulation circuit 22 (corresponding to a cold water circulation circuit) that absorbs and releases heat in the room.

  That is, the refrigerant circulation circuit 21 performs heat exchange between the four-way valve 6 provided in the outdoor unit 2 for switching the refrigerant circulation direction, the compressor 7 that compresses the refrigerant, and the refrigerant and the outside air. An air heat exchanger 8, an expansion valve 9 that decompresses and expands the refrigerant, and a water-refrigerant heat exchanger 11 that performs heat exchange between the refrigerant and cold / hot water are connected by a refrigerant pipe 15. The outdoor unit 2 is provided with an outdoor fan 10 (corresponding to a blower fan) that blows air to the air heat exchanger 8.

  The four-way valve 6 is a valve having four ports. For each of two ports for the refrigerant main path 15a (which constitutes a part of the refrigerant pipe 15), a part of the refrigerant pipe 15 is provided. Configure) Switch which of the two ports for the other refrigerant sub-path 15b is connected. The two ports for the refrigerant sub-path 15b are connected by a refrigerant sub-path 15b arranged in a loop, and the compressor 7 is provided on the refrigerant sub-path 15b.

  The compressor 7 pressurizes the refrigerant in the low-pressure gas state to make it into a high-pressure gas state, and also functions as a pump for circulating the refrigerant in the entire refrigerant pipe 15 in the outdoor unit 2.

  Further, the two ports for the refrigerant main path 15a of the four-way valve 6 are connected by the refrigerant main path 15a arranged in a loop, and the air heat exchanger 8 and the expansion are provided on the refrigerant main path 15a. The valve 9 and the water-refrigerant heat exchanger 11 are sequentially provided (in the illustrated example, in the order of counterclockwise refrigerant main path 15a).

  The air heat exchanger 8 functions as a condenser that dissipates heat of the refrigerant and condenses it into a liquid state when the temperature of the refrigerant in the gas state passing through the inside thereof is higher than the outdoor outside air temperature. Moreover, when the temperature of the said refrigerant | coolant in the liquid state which passes through the inside is lower than outdoor outdoor temperature, it functions as an evaporator which absorbs the heat of external air to a refrigerant | coolant, and evaporates to a gas state.

  The outdoor fan 10 improves the performance of the air heat exchanger 8 by sending air to the air heat exchanger 8.

  The expansion valve 9 functions to decompress and expand the refrigerant in a high-pressure liquid state to a low-pressure liquid state.

  As described above, the water-refrigerant heat exchanger 11 is connected to the refrigerant main path 15a to allow the refrigerant to pass through it, and is also connected to the cold / hot water pipe 3 to pass the cold / hot water therein. When the temperature of the gaseous refrigerant passing through the inside of the water-refrigerant heat exchanger 11 is higher than the temperature of the cold / hot water, it functions as a condenser that radiates the heat to the cold / hot water and condenses it into the liquid state. . Further, when the temperature of the liquid refrigerant passing through the inside is lower than the temperature of the cold / hot water, the refrigerant functions as an evaporator that absorbs the heat of the cold / hot water and evaporates it into a gas state.

  On the other hand, the cold / hot water circulation circuit 22 is provided in the outdoor unit 2, the water-refrigerant heat exchanger 11, the circulation pump 12 that applies circulation pressure to the cold / hot water, the cold / hot water tank 13, and the indoor unit 4. An indoor heat exchanger 14 that is provided and exchanges heat between cold / hot water and room air is connected by the cold / hot water pipe 3.

  The water-refrigerant heat exchanger 11 is connected to the cold / hot water pipe 3 arranged in a loop. On the cold / hot water pipe 3, an indoor heat exchanger 14, a cold / hot water tank 13, and a circulation pump 12 are connected. Are provided in order (in the example shown in the clockwise order of the cold / hot water pipe 3), and a pipe branched from the cold / hot water pipe 3 between the indoor heat exchanger 14 and the cold / hot water tank 13 is connected to the expansion tank 51. It is connected to the.

  The indoor heat exchanger 14 functions as a radiator that radiates the heat of the cold / hot water when the temperature of the cold / hot water passing through the indoor heat exchanger 14 is higher than the temperature of the room air. Moreover, when the temperature of the said cold / hot water which passes through the inside is lower than the temperature of indoor air, it functions as a heat absorber which makes the cold / hot water absorb the heat of indoor air. In this example, the indoor unit 4 includes the indoor heat exchanger 14 in the form of a cold / hot water panel in which the cold / hot water pipe 3 for circulating cold / hot water is exposed, as shown in FIG. Heat exchange with room air is performed in a manner that radiates heat or cold air of cold / hot water.

  The cold / hot water tank 13 separates and stores bubbles generated in the cold / warm water by cavitation or the like (air / water separation function), and further stores an air / water separation valve 13b (see FIGS. 3 and 4 to be described later) provided in the upper part. The stored air is released by operating a knob provided on the upper part. The expansion tank 51 functions as a so-called accumulator that absorbs fluctuations in the expansion and contraction of the cold / hot water in the cold / hot water pipe 3 of the cold / hot water circulation circuit 22.

  The circulation pump 12 functions to circulate cold / hot water through the entire cold / hot water pipe 3 disposed between the outdoor unit 2 and the indoor unit 4.

  The outdoor unit 2 includes an outdoor unit control unit (not shown) that controls the outdoor unit 2. The outdoor unit control unit is mainly composed of a microcomputer including a CPU, a ROM, a RAM, and the like, and controls the entire outdoor unit 2 based on an instruction from the user via the remote controller 5.

  In the refrigerant circulation circuit 21 configured as described above, the compressor 7 circulates the refrigerant in one direction on the refrigerant sub-path 15b, and controls the circulation direction of the refrigerant on the refrigerant main path 15a by switching the four-way valve 6. To do. For example, FIG. 2 shows the circulation direction during the cooling operation, and the refrigerant discharged from the compressor 7 flows in the order of the air heat exchanger 8, the expansion valve 9, and the water-refrigerant heat exchanger 11. Thereby, after the refrigerant in the gas state sucked at a low temperature and a low pressure is compressed by the compressor 7 to become a high temperature and a high pressure gas, the outdoor fan 10 in the air heat exchanger 8 (functions as a condenser). It is changed to a high-pressure liquid while releasing heat to the outside air by being cooled by blowing air. The refrigerant that has become liquid in this manner is decompressed by the expansion valve 9 to become a low-pressure liquid that is easily evaporated. Thereafter, the low-pressure liquid flows into the water-refrigerant heat exchanger 11 from the connection port 11a, evaporates in the water-refrigerant heat exchanger 11 (functions as an evaporator), and changes into gas, whereby the cold / hot water circulation circuit 22 Endothermic from cold and hot water. The refrigerant flows out from the connection port 11b of the water-refrigerant heat exchanger 11 as a low-temperature and low-pressure gas, and then returns to the compressor 7 again.

  On the other hand, in the cold / hot water circulation circuit 22, the cold / hot water circulating through the cold / hot water pipe 3 by the circulation pump 12 flows from the connection port 11 c as described above and is cooled by the water-refrigerant heat exchanger 11. It flows out from 11d, absorbs heat from indoor air in the indoor heat exchanger 14, cools the room, then passes through the cold / hot water tank 13 and returns to the circulation pump 12 again. By performing heat exchange between the refrigeration cycle of the refrigerant circuit 21 and the cold / hot water circuit 22 as described above, a cooling operation for lowering the temperature of the room air is performed.

  Although not specifically shown, in the heat pump chiller / heater 1, the air heat exchanger 8 functions as an evaporator by switching the four-way valve 6 to reverse the direction of circulation of the refrigerant, so that a water-refrigerant heat exchanger is obtained. Heating operation which raises the temperature of cold / hot water and room air can be performed by making 11 function as a condenser.

  FIG. 3 is an exploded perspective view of the outdoor unit 2, and FIG. 4 is a perspective view of the outdoor unit 2 as viewed from diagonally upward on the right rear side with the insides of the cold / hot water circuit chamber 34 and the machine room 36 exposed. Indicates. FIG. 5 is a plan view showing the main structure of the outdoor unit.

  In these FIGS. 3-5, the said outdoor unit 2 is provided with the housing | casing 31 formed in the substantially rectangular parallelepiped hollow shape. The casing 31 includes an upper cover 31a in which a top plate portion 31aU and a front upper portion 31aL are integrated, a front panel 31b in a lower front portion, a rear cover 31c in an upper portion, a right side and a right rear in a lower portion. 31d, a left side plate 31e covering the left side of the lower part, and a bottom plate 31f.

  Inside the casing 31, a horizontal partition wall 32 is provided at a height corresponding to the boundary between the installed upper cover 31a and the front panel 31b, and a vertical partition wall 33 is provided below the horizontal partition wall 32. It has been. As a result, in the housing 31, a space above the horizontal partition wall 32 is partitioned as a cold / hot water circuit chamber 34, and a space below the horizontal partition wall 32 is one side in the left-right direction from the vertical partition wall 33. (The left side in this example) is partitioned as the blower chamber 35, and the other side in the left-right direction (the right side in this example) is partitioned as the machine chamber 36 from the vertical partition wall 33. The vertical partition wall 33 corresponds to the partition wall described in each claim.

  The machine chamber 36 accommodates the four-way valve 6, the compressor 7, the expansion valve 9, the water-refrigerant heat exchanger 11, and the like.

  In the cold / hot water circuit chamber 34, the circulation pump 12 and the cold / hot water tank 13 are accommodated. In this example, the cold / hot water tank 13 and the circulation pump 12 correspond to the provision of the connection headers 3A1 and 3A2 (see also FIG. 2 above) of the cold / hot water pipe 3 on the right side of the casing 31. 35 is disposed at an upper position.

  The cold / hot water tank 13 includes a tank body 13a which is a can body for storing and circulating the cold / hot water, and stores / separates air generated in the cold / hot water circulation circuit 22 as described above. For this purpose, an air / water separation valve 13b is provided at the upper part of the tank body 13a for storing cold / hot water, and air generated in the tank body 13a is discharged by performing air / water separation in the tank body 13a.

  The blower chamber 35 accommodates the air heat exchanger 8 and the outdoor fan 10. The air heat exchanger 8 has a left end plate 8L (see FIGS. 3 and 5) facing the front portion of the blower chamber 35 on one side in the left-right direction (left side in this example), and the other side in the left-right direction (this The right end plate 8R (corresponding to the other end plate, see FIGS. 4 and 5) facing the rear of the machine room 36 is provided on the right side in the example. The air heat exchanger 8 in this example is a fin-tube heat exchanger of a panel body that can ventilate in the thickness direction, and the height of the air blowing chamber 35 on the rear surface (rear surface) side and the left side surface side of the air blowing chamber 35. It is arranged in substantially the entire length direction. The outdoor fan 10 of this example includes a rotating shaft 10b driven by a drive motor (not shown) and an impeller 10a fixed to the rotating shaft 10b, and is a direction from the rear side to the front side of the outdoor unit 2. This is an axial fan that blows air (in the direction from the upper right to the lower left in FIG. 3).

  Next, the features of the outdoor unit 2 of the present embodiment, which is the basic configuration described above, will be described in detail. As described above, in the outdoor unit 2, the interior of the casing 31 (specifically, the space below the horizontal partition wall 32) is partitioned into the blower chamber 35 and the machine chamber 36 by the vertical partition wall 33. Yes. At this time, as shown in FIG. 5, the vertical partition wall 33 includes a vertical wall portion 33a extending substantially rearward from the front end of the housing 31, and the air heat exchanger 8 from the rear end portion of the vertical wall portion 33a. And a lateral wall portion 33b extending substantially rightward to the vicinity of the right end plate 8R.

  Here, at the time of the cooling operation shown in FIG. 2 and the like, since the low-temperature refrigerant flows in the refrigerant pipe 15 in the vicinity of the water-refrigerant heat exchanger 11, the inside of the machine chamber 36 is affected by the low temperature. The refrigerant circulation circuit 21 connected to the water-refrigerant heat exchanger 11 is cooled and the ambient air of the refrigerant circulation circuit 21 (specifically, the refrigerant pipe 15) connected to the water-refrigerant heat exchanger 11 is cooled. Condensation tends to occur easily in the circuit 21 (specifically, the refrigerant pipe 15). In particular, since the ambient air around the compressor 7 disposed in the machine room 36 becomes relatively high temperature, the ambient air around the compressor 7 and the ambient air around the refrigerant pipe 15 are not interrupted. ) If it is in circulation, a flow of air in which high-temperature air is drawn around the refrigerant pipe 15 occurs, and in particular, the amount of condensation increases.

  Therefore, in the present embodiment, as clearly shown in FIG. 5, the inside of the machine room 36 is divided into a front side space 36a and a back side space 36b that functions as a dew condensation chamber in which condensation occurs. In addition, the water-refrigerant heat exchanger 11 is arranged. In detail, the water-refrigerant heat exchanger 11 has a right end substantially hitting the right middle of the right side plate 31d and a left end at a substantially tip of the horizontal wall 33b of the vertical partition wall 33. It is disposed obliquely at a position closer to the rear inside the machine room 36 so as to abut (see FIG. 5). Thereby, the water-refrigerant heat exchanger 11, the lateral wall portion 33b of the vertical partition wall 33 (corresponding to a part of the partition wall), and the right end plate 8R of the air heat exchanger 8 (end on the other side). And the right side plate 31d (see FIG. 5, corresponding to a part of the housing) constitute an outer shell that surrounds the back space 36b that functions as a dew condensation chamber.

  At this time, as described above, the water-refrigerant heat exchanger 11 is connected to the refrigerant pipe 15 in the connection ports 11a and 11b (see FIGS. 4, 5, and 2) located on the back space 36b side. In addition, it is connected to the cold / hot water pipe 3 at the connection ports 11c and 11d (see FIGS. 4, 5, and 2) similarly located on the back side space 36b side.

  A tray member 38 (corresponding to a dew condensation water receiving member) is provided below the back side space 36b (including below the water-refrigerant heat exchanger 11). This tray member 38 is capable of dew condensation in the back side space 36b, which can occur at a low temperature of the refrigerant pipe 15 and the cold / hot water pipe 3 connected to the back side of the water-refrigerant heat exchanger 11 as described above. The liquid droplets (condensed water) are received and accumulated, and water is introduced and discharged toward a drain drain hole (not shown) provided on the bottom plate 31f.

  On the other hand, in the machine room 36, the compressor 7 is disposed on the opposite side to the back space 36b so that the ambient air of the compressor 7 and the ambient air of the refrigerant pipe 15 are substantially blocked. The four-way valve 6 is disposed in the front space 36a.

  As described above, in the outdoor unit 2 of the present embodiment, the water-refrigerant heat exchanger 11 divides the inside of the machine room 36 into the front side space 36a and the back side space 36b, and The rear side space 36b is arranged to be a dew condensation chamber where dew condensation occurs due to the low temperature of the refrigerant circuit 21. And the said compressor 7 is arrange | positioned in the said front side space 36a on the opposite side to the said back side space 36b. Thereby, the ambient air of the compressor 7 and the ambient air of the refrigerant pipe 15 are substantially cut off, and the occurrence of the air circulation as described above is suppressed. As a result, an increase in the amount of condensation can be prevented.

  In the present embodiment, the water-refrigerant heat exchanger 11 is arranged so as to divide the inside of the machine room 36 into a front side space 36a and a back side space 36b, and in particular, the water-refrigerant heat exchange. The vessel 11 is connected to the refrigerant pipe 15 and the cold / hot water pipe 3 on the back side space 36b side. As a result, the ambient air around the compressor 7 and the ambient air around the refrigerant pipe 15 are substantially blocked, and the inflow of high-temperature air from the front side space 36a to the back side space 36b is suppressed, and the water-refrigerant heat exchanger 11, the temperature in the back side space 36 b on the back side is kept low, and there is no inflow of air that causes new condensation, so that not only the amount of condensation that occurs around the refrigerant pipe 15 but also around the cold and hot water pipe 3. An increase in the amount of dew condensation that occurs can be prevented.

  In the present embodiment, in particular, the water-refrigerant heat exchanger 11, the lateral wall portion 33 b of the vertical partition wall 33, the right end plate 8 R of the air heat exchanger 8, and the right side plate 31 d of the housing 31. The outer shell surrounding the back space 36b is formed. The outer space thus formed can substantially seal the back space 36b functioning as a dew condensation chamber.

  In the present embodiment, in particular, a tray member 38 is provided below the water-refrigerant heat exchanger 11 and the back space 36b. Thereby, on the back side of the water-refrigerant heat exchanger 11, droplets (condensation water) generated by condensation in the back space 36b can be received and appropriately introduced and discharged.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not change the summary of invention. For example, in the said embodiment, although this invention was applied to the heat pump cold / hot water machine 1 which can perform both air_conditionaing | cooling operation and heating operation by switching the said four-way valve 6, it is not restricted to this. That is, the present invention may be applied to a heat pump chiller that performs only a cooling operation without performing a heating operation.

1 Heat pump cold / hot water machine 2 Outdoor unit (heat pump cold water heat source machine)
3 Cold and hot water piping 7 Compressor 8 Air heat exchanger 8R Right end plate (end plate on the other side)
9 Expansion valve 10 Outdoor fan (fan)
DESCRIPTION OF SYMBOLS 11 Water-refrigerant heat exchanger 14 Indoor heat exchanger 15 Refrigerant piping 21 Refrigerant circulation circuit 22 Cold / hot water circulation circuit 31 Case 31d Right side board (a part of case)
33 Vertical partition wall (partition wall)
33b Horizontal wall (part of the partition wall)
35 Blower chamber 36 Machine room 36a Front side space 36b Back side space (condensation chamber)
38 Tray member (condensation water receiving member)

Claims (4)

In the water-refrigerant heat exchanger, a compressor, an air heat exchanger, an expansion valve, and a water-refrigerant heat exchanger that are arranged inside the housing are connected by a refrigerant pipe to form a refrigerant circulation circuit. In a heat pump chilled water heat source machine that transmits and receives heat between a chilled water circulation circuit having a chilled water pipe connected to an indoor heat exchanger and the refrigerant circulation circuit,
A blower chamber provided on one side of the inside of the housing and provided with a blower fan for sending outside air to the air heat exchanger;
A machine room provided on the other side of the housing, comprising the compressor, the expansion valve, and the water-refrigerant heat exchanger;
A partition wall that partitions the blower chamber and the machine chamber;
Have
The water-refrigerant heat exchanger is
The interior of the machine room is divided into a front side space and a back side space, and the back side space is arranged to be a dew condensation chamber in which condensation occurs,
The said compressor is arrange | positioned in the said front side space, The heat pump cold water heat source machine characterized by the above-mentioned. The water-refrigerant heat exchanger is
The heat pump cold water heat source apparatus according to claim 1, wherein the heat pump cold water heat source unit is connected to the refrigerant pipe and the cold water pipe on the dew condensation chamber side. The water-refrigerant heat exchanger, a part of the partition wall, the end plate on the other side of the air heat exchanger, and a part of the casing constitute an outer wall that surrounds the dew condensation chamber. The heat pump cold water heat source machine according to claim 1 or 2, wherein the heat pump cold water heat source machine is provided. The heat pump cold water heat source apparatus according to any one of claims 1 to 3, wherein a dew condensation water receiving member is provided below the water-refrigerant heat exchanger and the dew condensation chamber.

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