WO2021181559A1

WO2021181559A1 - Water heat exchange unit and heat pump device equipped with water heat exchange unit

Info

Publication number: WO2021181559A1
Application number: PCT/JP2020/010514
Authority: WO
Inventors: 結唯虻川
Original assignee: 三菱電機株式会社
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2021-09-16
Also published as: JPWO2021181559A1

Abstract

This water heat exchange unit comprises a water heat exchanger that exchanges heat between water and a refrigerant, and a rectangular housing that houses the water heat exchanger. The housing has a body that houses the water heat exchanger and a corner for pipe extraction that is detachably attached to the body and constitutes a corner of the housing. A pipe extraction hole for taking out the piping connected to the water heat exchanger to the outside of the housing is formed in the corner for pipe extraction, and the position of the pipe extraction hole is changed by changing the direction in which the corner for pipe extraction is attached to the body.

Description

Heat pump device with water heat exchange unit and water heat exchange unit

The present disclosure relates to a water heat exchange unit provided with a heat exchanger for heat exchange between water and a refrigerant, and a heat pump device provided with a water heat exchange unit.

The conventional water heat exchange unit has a configuration in which a heat exchanger for heat exchange between water and a refrigerant is arranged inside the housing. One end of the water pipe is connected to the heat exchanger, and the other end of the water pipe penetrates the bottom plate of the housing and is taken out to the outside. The other end of the water pipe taken out from the housing is connected to the indoor unit (see, for example, Patent Document 1).

International Publication No. 2007/004460

Since the water heat exchange unit is connected to the indoor unit by a water pipe, it is necessary to take out the water pipe from the housing in the direction according to the location of the indoor unit, considering the layout of the water pipe. Be done. However, in Patent Document 1, the water pipe is taken out downward from the bottom plate of the housing, and the direction of taking out the water pipe from the housing is determined. Therefore, there is a problem that the direction of taking out the water pipe from the housing cannot be changed according to the arrangement location of the indoor unit.

The present disclosure has been made in order to solve the above-mentioned problems, and includes a water heat exchange unit and a water heat exchange unit capable of giving various directions to take out water pipes from the housing. The purpose is to obtain a heat pump device.

The water heat exchange unit according to the present disclosure includes a water heat exchanger that exchanges heat between water and a refrigerant, and a rectangular housing that houses the water heat exchanger. It has a main body for accommodating and a corner for taking out pipes which is detachably attached to the main body and constitutes a corner of the housing. The corner for taking out the pipe is a pipe connected to a water heat exchanger. The pipe take-out hole is formed to take out the heat to the outside of the housing, and the position of the pipe take-out hole is changed by changing the direction in which the pipe take-out corner is attached to the main body.

In the water heat exchange unit according to the present disclosure, the position of the pipe take-out hole can be changed by changing the direction in which the pipe take-out corner is attached to the main body, so that the water pipe can be taken out from the housing. It can be diverse.

It is external perspective view of the water heat exchange unit which concerns on Embodiment 1. FIG. It is an exploded perspective view which shows the internal structure of the water heat exchange unit which concerns on Embodiment 1. FIG. It is a perspective view of the corner part for taking out a pipe of the water heat exchange unit which concerns on Embodiment 1. FIG. It is a perspective view which shows the structure which the drawing direction of the water pipe in the water heat exchange unit which concerns on Embodiment 1 is downward from the lower right rear corner part. FIG. 5 is a perspective view showing a configuration in which the pull-out direction of the water pipe in the water heat exchange unit according to the first embodiment is from the lower right rear corner to the rear direction. FIG. 5 is an external perspective view of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. FIG. 5 is an external perspective view of the water heat exchange unit according to the second embodiment, showing a configuration in which the upper right rear corner of the housing is the take-out position of the water pipe 4 and the take-out direction is the right direction. It is a perspective view which shows the structure which made the take-out direction of a water pipe upward in the water heat exchange unit of FIG. FIG. 5 is a perspective view showing a configuration in which the water pipe take-out direction is the rear direction in the water heat exchange unit of FIG. 7. It is a perspective view which shows the replacement corner part of the water heat exchange unit which concerns on Embodiment 2. FIG. FIG. 5 is an external perspective view of a modification 1 of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. .. FIG. 5 is an external perspective view of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right front corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. It is a perspective view which shows the structure which made the take-out direction of a water pipe downward in the water heat exchange unit of FIG. It is a perspective view which shows the structure which made the take-out direction of a water pipe forward in the water heat exchange unit of FIG. FIG. 5 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. .. FIG. 5 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the upper right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. It is a perspective view which shows the structure which made the take-out direction of a water pipe upward in the water heat exchange unit of FIG. FIG. 5 is a perspective view showing a configuration in which the water pipe take-out direction is the rear direction in the water heat exchange unit of FIG. FIG. 5 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right front corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. .. FIG. 5 is a perspective view showing a configuration in which the water pipe take-out direction is the forward direction in the water heat exchange unit of FIG. It is a perspective view which shows the structure which made the take-out direction of a water pipe downward in the water heat exchange unit of FIG. FIG. 5 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the upper right front corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. FIG. 6 is a perspective view showing a configuration in which the water pipe take-out direction is the forward direction in the water heat exchange unit of FIG. 22. It is a perspective view which shows the structure which made the take-out direction of a water pipe upward in the water heat exchange unit of FIG. It is a schematic block diagram of the heat pump device which concerns on Embodiment 3. FIG. It is a circuit block diagram of the heat pump device which concerns on Embodiment 3. FIG.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and the description thereof will be omitted or simplified as appropriate. In addition, the shape, size, arrangement, etc. of the configurations shown in each figure can be appropriately changed within the scope of the present disclosure.

Embodiment 1.
FIG. 1 is an external perspective view of the water heat exchange unit according to the first embodiment. FIG. 2 is an exploded perspective view showing the internal configuration of the water heat exchange unit according to the first embodiment. In the following explanation, expressions indicating directions such as "top", "bottom", "left", "right", "front", and "rear" are used, but unless otherwise specified, the water heat exchange unit Means the direction when viewed from the front side. Terms in these directions are for illustration purposes only and are not intended to limit this disclosure.

The water heat exchange unit 1 is a device that constitutes a part of the refrigerant circuit of the heat pump device, and is an outdoor unit 20 having a compressor or the like of the refrigerant circuit (see FIG. 25 described later) and an indoor unit 30 arranged indoors. (See FIG. 25, which will be described later) is a device that is arranged separately. The heat pump device will be described again in the third embodiment described later.

As shown in FIGS. 1 and 2, the housing 5 of the water heat exchange unit 1 is formed in a rectangular parallelepiped shape as a whole, and is detachably attached to the main body 6 and the main body 6 of the housing 5. It has a pipe taking-out corner portion 8 constituting the corner portion. In this example, the pipe take-out corner 8 constitutes the lower right rear corner of the housing 5. The main body 6 is composed of a plurality of sheet metal design panels 7. Of the plurality of design panels 7 constituting the main body 6, the lower design panel 7a forming the lower surface of the housing 5 is formed with a refrigerant pipe take-out hole 7b. In FIGS. 1 and 2, the refrigerant pipe take-out hole 7b is provided in the lower design panel 7a, but the position is not limited to this.

The pipe take-out corner 8 is composed of a sheet metal design panel 9. A water pipe take-out hole 9b is formed in the pipe take-out corner portion 8. The water pipe take-out hole 9b is formed in an elongated hole shape so that the two water pipes 4 described later can be taken out side by side. The elongated hole shape may be a hole shape that is long in one direction, and includes, for example, an elliptical shape or a rectangular shape. The configuration of the pipe take-out corner portion 8 will be described again.

A rectangular parallelepiped water heat exchanger 2, two refrigerant pipes 3, and two water pipes 4 are arranged in the main body 6. The water heat exchanger 2 exchanges heat between water and a refrigerant, and is composed of a plate type heat exchanger. The water pipe 4 is a pipe through which water passes, and one end is connected to the side surface of the water heat exchanger 2 and the other end is to the outside from the water pipe take-out hole 9b provided in the pipe take-out corner 8. It has been taken out. The other end of the water pipe 4 taken out of the housing 5 is connected to the indoor unit 30. The water pipe 4 has a flexible pipe portion 4a having flexibility, and the position of the end portion of the water pipe 4 on the side opposite to the connection side of the water heat exchanger 2 can be freely changed. There is.

The refrigerant pipe 3 is a pipe through which the refrigerant passes, and one end is connected to the side surface of the water heat exchanger 2 and the other end is outside from the refrigerant pipe take-out hole 7b provided in the lower design panel 7a of the housing 5. It has been taken out in. The other end of the refrigerant pipe 3 taken out of the housing 5 is connected to the outdoor unit 20. The refrigerant pipe 3 does not have a flexible pipe portion and is composed of pipes having a fixed shape in order to avoid the risk of refrigerant leakage. Therefore, the direction in which the refrigerant pipe 3 is taken out from the housing 5 is determined, and in FIGS. 1 and 2, the refrigerant pipe 3 is taken out from the housing 5 in the downward direction. The direction in which the refrigerant pipe 3 is taken out from the housing 5 is not limited to the downward direction, and can be freely set. From the viewpoint of avoiding the risk of refrigerant leakage, it is preferable that the refrigerant pipe 3 does not have a flexible pipe portion, but the refrigerant pipe 3 may have a configuration having a flexible pipe portion 4a.

FIG. 3 is a perspective view of a corner portion for taking out the pipe of the water heat exchange unit according to the first embodiment. The pipe take-out corner portion 8 has a three-sided body shape having three square surfaces perpendicular to each other. Specifically, it has three square design panels 9 of the same size, and is formed by vertically combining the three design panels 9 with each other. A water pipe take-out hole 9b is formed in one of the three design panels 9a. The corner portion 8 for taking out the pipe is not limited to the configuration formed by combining three design panels 9, and may be formed by, for example, bending one die-cut sheet metal panel.

As described above, since the pipe take-out corner portion 8 has a three-sided body shape having three square faces perpendicular to each other, the pipe take-out corner portion 8 can be mounted on the main body portion 6 by changing the direction. By changing the direction in which the pipe take-out corner 8 is attached to the main body 6, the position of the water pipe take-out hole 9b can be changed, and the take-out direction of the water pipe 4 can be changed. Since the water pipe 4 has the flexible pipe portion 4a as described above, the water pipe 4 can be taken out from the water pipe take-out hole 9b by moving the position of the end portion of the water pipe 4 according to the position of the water pipe take-out hole 9b. can. 1 and 2 show an example in which the position of the water pipe take-out hole 9b is the lower right rear part and the take-out direction of the water pipe 4 is the right direction. 4 to 6 are shown.

FIG. 4 is a perspective view showing a configuration in which the pull-out direction of the water pipe in the water heat exchange unit according to the first embodiment is downward from the lower right rear corner. FIG. 4 shows a perspective view of the entire water heat exchange unit and an enlarged perspective view of the portion surrounded by the dotted line as viewed from the lower surface side. FIG. 5 is a perspective view showing a configuration in which the pull-out direction of the water pipe in the water heat exchange unit according to the first embodiment is from the lower right rear corner to the rear direction. FIG. 5 shows a perspective view of the entire water heat exchange unit and an enlarged perspective view of the portion surrounded by the dotted line as viewed from the rear surface side.

By changing the direction in which the pipe take-out corner 8 is attached to the main body 6, the water pipe 4 can be taken out in the downward direction as shown in FIG. 4 or in the rear direction as shown in FIG. ..

In this way, by changing the direction in which the pipe take-out corner 8 is attached to the main body 6, the take-out direction of the water pipe 4 can be changed to any of the three directions, and the take-out direction of the water pipe 4 can be varied. Can be given. Therefore, the take-out direction of the water pipe 4 can be selected according to the installation location of the indoor unit 30 to which the water pipe 4 is connected, and it is not necessary to run the water pipe 4 in a roundabout way. Therefore, the water pipe 4 can be easily connected, and the water heat exchange unit 1 having excellent workability can be configured. Similar to the water pipe 4, the refrigerant pipe 3 may also have a flexible pipe portion, and the refrigerant pipe 3 may also be pulled out from the water pipe take-out hole 9b provided in the pipe take-out corner portion 8.

The water heat exchange unit 1 of the first embodiment includes a water heat exchanger 2 that exchanges heat between water and a refrigerant, and a rectangular housing 5 that houses the water heat exchanger 2. The housing 5 has a main body 6 that houses the water heat exchanger 2 and a pipe outlet corner 8 that is detachably attached to the main body 6 and forms a corner of the housing 5. The pipe take-out corner 8 is formed with a pipe take-out hole for taking out the pipe connected to the water heat exchanger 2 to the outside of the housing 5, and the direction in which the pipe take-out corner 8 is attached to the main body 6. By changing, the position of the pipe take-out hole is changed. In this way, the position of the pipe take-out hole can be changed by changing the direction in which the pipe take-out corner 8 is attached to the main body 6, so that there is a variety of pipe take-out directions from the housing 5. Can be made. Therefore, the take-out direction of the pipe can be selected according to the installation location of the indoor unit 30, and it is not necessary to route the pipe in a roundabout way. Therefore, the pipe connection work can be facilitated, and the water heat exchange unit 1 having excellent workability can be configured. Here, the pipe taken out from the pipe take-out hole may be the water pipe 4 or the refrigerant pipe 3.

Since the pipe take-out corner 8 has a three-sided shape having three square faces perpendicular to each other, the direction in which the pipe take-out corner 8 is attached to the main body 6 can be changed.

Since the pipe take-out hole has a long hole shape, multiple pipes can be taken out side by side.

Since the pipe has a flexible pipe portion 4a having flexibility, the position of the end portion of the pipe opposite to the connection side of the water heat exchanger 2 can be freely changed and can be pulled out from the pipe take-out hole.

A refrigerant pipe 3 through which the refrigerant flows is connected to the water heat exchanger 2, and a refrigerant pipe take-out hole 7b for taking out the refrigerant pipe 3 is formed in the housing 5, so that the refrigerant pipe 3 is from a fixed position. The refrigerant pipe 3 can be taken out to the outside of the housing 5.

Embodiment 2.
In the first embodiment, the take-out direction of the water pipe 4 can be selected at one corner of the housing 5. In the second embodiment, the take-out direction of the water pipe 4 can be selected at the plurality of corners of the housing 5. Hereinafter, the configuration in which the second embodiment is different from the first embodiment will be mainly described, and the configurations not described in the second embodiment are the same as those in the first embodiment.

FIG. 6 is an external perspective view of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. .. FIG. 7 is an external perspective view of the water heat exchange unit according to the second embodiment, showing a configuration in which the upper right rear corner of the housing is the take-out position of the water pipe 4 and the take-out direction is the right direction. .. FIG. 8 is a perspective view showing a configuration in which the water pipe take-out direction is upward in the water heat exchange unit of FIG. FIG. 9 is a perspective view showing a configuration in which the water pipe take-out direction is the rear direction in the water heat exchange unit of FIG. FIG. 10 is a perspective view showing a replacement corner portion of the water heat exchange unit according to the second embodiment.

The housing 5A of the second embodiment is formed in a rectangular parallelepiped shape as a whole. The housing 5A has a main body portion 6 composed of a plurality of sheet metal design panels 7, a pipe extraction corner portion 8, and a replacement corner portion 10. The pipe take-out corner portion 8 has the same configuration as that of the first embodiment. The replacement corner portion 10 is detachably attached to the main body portion 6 and constitutes a corner portion of the housing 5A separate from the pipe extraction corner portion 8. The replacement corner portion 10 has a trihedron shape having three square faces perpendicular to each other. Specifically, it has three square design panels 9 of the same size, and is formed by vertically combining the three design panels 9 with each other. The replacement corner portion 10 may be formed by, for example, bending a die-cut sheet metal panel. The replacement corner portion 10 has the same outer shape as the pipe extraction corner portion 8. Therefore, as shown in FIGS. 6 and 7, the replacement corner portion 10 and the pipe take-out corner portion 8 can exchange their mounting positions with respect to the main body portion 6.

In FIG. 6, the replacement corner portion 10 constitutes the upper right rear corner portion of the housing 5A, and the pipe outlet corner portion 8 constitutes the lower right rear corner portion of the housing 5A. Therefore, by changing the direction in which the pipe extraction corner 8 is attached to the main body 6 at the lower right rear corner of the housing 5A, the water pipe 4 can be taken out from the lower right rear corner to the right and below. It can be either directional or backward.

By exchanging the pipe take-out corner 8 and the replacement corner 10 from the state of FIG. 6, as shown in FIGS. 7 to 9, the take-out direction of the water pipe 4 is from the upper right rear corner to the right. (FIG. 7), backward improvement direction (FIG. 8), and backward direction (FIG. 9).

(Modification example 1)
In the above, an example in which the position of the pipe take-out corner 8 can be exchanged between the lower right rear corner and the upper right rear corner of the housing 5A has been shown, but the pipe take-out corner 8 can be exchanged. The position is not limited to these positions, and may be the position shown in FIGS. 11 to 14 below.

FIG. 11 is an external perspective view of a modification 1 of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. It is a perspective view. FIG. 12 is an external perspective view of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right front corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. .. FIG. 13 is a perspective view showing a configuration in which the water pipe take-out direction is downward in the water heat exchange unit of FIG. FIG. 14 is a perspective view showing a configuration in which the water pipe take-out direction is the forward direction in the water heat exchange unit of FIG.

In FIG. 11, the replacement corner portion 10 constitutes the lower right front corner portion of the housing 5A, and the pipe outlet corner portion 8 constitutes the lower right rear corner portion of the housing 5A. Therefore, by changing the direction in which the pipe take-out corner 8 is attached to the main body 6 at the lower right rear corner of the housing 5A, the water pipe 4 can be taken out from the lower right rear corner of the housing 5A. It can be right, down, or backward.

By exchanging the pipe take-out corner 8 and the replacement corner 10 from the state of FIG. 11, as shown in FIGS. 12 to 14, the take-out direction of the water pipe 4 is set to the lower right front of the housing 5A. It can be in either the right direction (FIG. 12), the downward direction (FIG. 13), or the forward direction (FIG. 14) from the direction portion.

(Modification 2)
In the above, one example is shown in which the replacement corner portion 10 is one, but the replacement corner portion 10 may be two or more. The following FIGS. 15 to 24 show three examples of replacement corners 10.

FIG. 15 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. It is a perspective view. FIG. 16 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the upper right rear corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. It is a figure. FIG. 17 is a perspective view showing a configuration in which the water pipe take-out direction is upward in the water heat exchange unit of FIG. FIG. 18 is a perspective view showing a configuration in which the water pipe 4 is taken out in the rear direction in the water heat exchange unit of FIG.

FIG. 19 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the lower right front corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. It is a perspective view. FIG. 20 is a perspective view showing a configuration in which the water pipe take-out direction is the forward direction in the water heat exchange unit of FIG. FIG. 21 is a perspective view showing a configuration in which the water pipe take-out direction is downward in the water heat exchange unit of FIG. FIG. 22 is an external perspective view of a modification 2 of the water heat exchange unit according to the second embodiment, showing a configuration in which the upper right front corner of the housing is the take-out position of the water pipe and the take-out direction is the right direction. It is a figure. FIG. 23 is a perspective view showing a configuration in which the water pipe take-out direction is the forward direction in the water heat exchange unit of FIG. FIG. 24 is a perspective view showing a configuration in which the water pipe take-out direction is upward in the water heat exchange unit of FIG.

In FIGS. 15 to 24, the housing 5A includes three replacement corners 10, and all the corners on the right side of the housing 5A, that is, on the pipe storage side, are covered with the three replacement corners 10 and the pipe is taken out. It is composed of a square portion 8. Therefore, the pipe take-out corner 8 can be selectively mounted from the four corners, and the variety of the water pipe 4 take-out directions from the housing 5A can be further improved.

In FIG. 15, a pipe take-out corner 8 is attached to the lower right rear corner of the main body 6. Therefore, the take-out direction of the water pipe 4 can be any of the right direction, the downward direction, and the rear direction from the lower right rear corner of the housing 5A.

In FIGS. 16 to 18, a pipe take-out corner 8 is attached to the upper right rear corner of the main body 6. Therefore, the take-out direction of the water pipe 4 can be one of the right direction (FIG. 16), the upward direction (FIG. 17), and the rear direction (FIG. 18) from the upper right rear corner of the housing 5A.

In FIGS. 19 to 21, a pipe take-out corner 8 is attached to the lower right front corner of the main body 6. Therefore, the take-out direction of the water pipe 4 can be one of the right direction (FIG. 19), the front direction (FIG. 20), and the downward direction (FIG. 21) from the lower right front corner of the housing 5A.

In FIGS. 22 to 24, the pipe take-out corner 8 is attached to the upper right front corner of the main body 6. Therefore, the take-out direction of the water pipe 4 can be one of the right direction (FIG. 22), the front direction (FIG. 23), and the upward direction (FIG. 24) from the upper right front corner of the housing 5A.

According to the second embodiment, the same effect as that of the first embodiment can be obtained, and the replacement corner portion 10 that can be replaced with the pipe take-out corner portion 8 is provided, so that the water pipe 4 can be taken out in the take-out direction. Diversity can be further improved. Therefore, it is possible to realize a configuration having excellent workability, which makes it easier to connect the water pipe 4.

Embodiment 3.
The third embodiment relates to a heat pump device including the water heat exchange unit 1 of the first embodiment or the second embodiment.

FIG. 25 is a schematic configuration diagram of the heat pump device according to the third embodiment. FIG. 26 is a circuit configuration diagram of the heat pump device according to the third embodiment.
The heat pump device includes the water heat exchange unit 1 of the first embodiment or the second embodiment, the outdoor unit 20, the indoor unit 30, and the fan coil unit 40. A compressor 21, a four-way valve 22, an outdoor heat exchanger 23, and a decompression device 24 are arranged in the outdoor unit 20, and each of these devices and a refrigerant flow path of the water heat exchanger 2 of the water heat exchange unit 1 A refrigerant circuit 50 in which the refrigerant circulates is configured. A hot water supply tank 31, a water circulation pump 32, a water circulation valve 33, and a water circulation valve 54 are arranged in the indoor unit 30. A radiator (not shown) and a fan (not shown) are arranged in the fan coil unit 40. The heating / cooling water circuit 60 is composed of the water flow path of the water heat exchanger 2, the hot water supply tank 31, and the fan coil unit 40.

In the heat pump device configured as described above, the water in the water circuit 60 for heating and cooling is switched by the water heat exchanger 2 by switching the flow direction of the refrigerant circulating in the refrigerant circuit 50 by switching the four-way valve 22 of the refrigerant circuit 50. Heat or cool.

When the four-way valve 22 is switched to the solid line side in FIG. 26, the high-temperature and high-pressure refrigerant discharged from the compressor 21 flows into the refrigerant flow path of the water heat exchanger 2 and enters the water flow path of the water heat exchanger 2. Heats water by exchanging heat with water. The refrigerant after heat exchange is decompressed by the decompression device 24, heated by heat exchange with air in the outdoor heat exchanger 23, and then returned to the compressor 21 via the four-way valve 22. The water heated by exchanging heat with the refrigerant in the refrigerant circuit 50 in the water heat exchanger 2 circulates in the heating / cooling water circuit 60, is stored in the hot water supply tank 31, for example, and is used for hot water supply, for example, a fan coil unit. It is supplied to 40 and used for heating.

When the four-way valve 22 is switched to the dotted line side in FIG. 26, the high-temperature and high-pressure refrigerant discharged from the compressor 21 flows into the outdoor heat exchanger 23 and is cooled by heat exchange with the outside air. The refrigerant cooled by the outdoor heat exchanger 23 is decompressed by the decompression device 24, then flows into the refrigerant flow path of the water heat exchanger 2 and exchanges heat with the water in the water flow path of the water heat exchanger 2. Cool the water. The water cooled by exchanging heat with the refrigerant in the refrigerant circuit 50 in the water heat exchanger 2 circulates in the heating / cooling water circuit 60, is supplied to, for example, the fan coil unit 40, and is used for cooling.

According to the third embodiment, since the water heat exchange unit 1 of the first embodiment or the second embodiment is provided, it is possible to configure a heat pump device having excellent workability and facilitating the connection work of the water pipe 4.

1 water heat exchange unit, 2 water heat exchanger, 3 refrigerant piping, 4 water piping, 4a flexible piping, 5 housing, 5A housing, 6 main body, 7 design panel, 7a lower design panel, 7b refrigerant pipe removal Hole, 8 Piping take-out corner, 9 Design panel, 9a Design panel, 9b Water pipe take-out hole, 10 Replacement corner, 20 Outdoor unit, 21 Compressor, 22 Four-way valve, 23 Outdoor heat exchanger, 24 Decompression device , 30 indoor unit, 31 hot water supply tank, 32 water circulation pump, 33 water circulation valve, 40 fan coil unit, 50 refrigerant circuit, 60 heating and cooling water circuit.

Claims

A water heat exchanger that exchanges heat between water and refrigerant,
A rectangular parallelepiped housing for accommodating the water heat exchanger is provided.
The housing has a main body portion for accommodating the water heat exchanger, and a pipe outlet corner portion that is detachably attached to the main body portion and forms a corner portion of the housing.
The pipe take-out corner is formed with a pipe take-out hole for taking out the pipe connected to the water heat exchanger to the outside of the housing, and the direction in which the pipe take-out corner is attached to the main body. A water heat exchange unit in which the position of the pipe take-out hole is changed by changing.
The water heat exchange unit according to claim 1, wherein the pipe take-out corner has a triphasic shape having three square faces perpendicular to each other.
It is detachably attached to the main body of the housing, and includes replacement corners that form the corners of the housing. The replacement corners and the pipe take-out corners have the same outer shape. The water heat exchange unit according to claim 1 or 2, wherein the positions of the water exchange units can be exchanged with each other.
The water heat exchange unit according to claim 3, wherein the plurality of corners of the housing are formed by the replacement corners.
The water heat exchange unit according to any one of claims 1 to 4, wherein the pipe take-out hole has an elongated hole shape.
The water heat exchange unit according to any one of claims 1 to 5, wherein the pipe is a water pipe through which the water flows, and the water pipe has a flexible pipe portion having flexibility.
One of claims 1 to 6, wherein a refrigerant pipe through which the refrigerant flows is connected to the water heat exchanger, and a refrigerant pipe take-out hole for taking out the refrigerant pipe is formed in the housing. The water heat exchange unit described in.
A heat pump device including the water heat exchange unit according to any one of claims 1 to 7.