WO2021176595A1

WO2021176595A1 - Heat exchanger unit and outdoor unit

Info

Publication number: WO2021176595A1
Application number: PCT/JP2020/009153
Authority: WO
Inventors: 直緒人下條
Original assignee: 三菱電機株式会社
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2021-09-10
Also published as: JPWO2021176595A1; JP7241959B2

Abstract

A heat exchanger unit comprising: a plate heat exchanger comprising a plurality of plates stacked; a holding case that houses the plate heat exchanger; and a pedestal for fixing the holding case to an installation portion. The holding case is provided with: a first holding member that has a front portion covering the front surface of the plate heat exchanger, and a top portion covering the top surface; and a second holding member that has a back portion covering the back surface of the plate heat exchanger, a bottom portion covering the bottom surface, and a right side portion and a left side portion covering the right side surface and the left side surface. The first holding member and the second holding member are fixed to each other, the second holding member and the pedestal are fixed to each other, and the depth dimension of the housing of the plate heat exchanger, composed of the first holding member and the second holding member, can be adjusted according to the number of the stacked plates that make up the plate heat exchanger. This configuration reduces the number of components to be prepared according to the capacity of the plate heat exchanger, thereby allowing a reduction in the number of man-hours for assembly and an improvement in the ease of assembly.

Description

Heat exchanger unit and outdoor unit

This disclosure relates to a water heat exchanger unit and an outdoor unit that produce hot or cold water using a refrigeration cycle.

As a water heat exchanger unit that produces hot or cold water using a refrigeration cycle, a plate heat exchanger is covered with a heat insulating material and surrounded by a pair of holding cases each having a three-sided structure that has strength that does not deform. An integrated heat exchanger unit that fixes each other with screws is known (see, for example, Patent Document 1).

In the heat exchanger unit of Patent Document 1, one of the pair of holding cases is composed of a front wall, a top wall and a side wall, and the other holding case is composed of a back wall, a bottom wall and a side wall. The pair of holding cases are assembled to each other and fixed with screws to surround the plate heat exchanger covered with the heat insulating material. In addition, a base sheet metal is attached to the assembled holding case.

Japanese Unexamined Patent Publication No. 2008-19677

By the way, in general, the thickness at which plates are laminated in a plate heat exchanger differs depending on the capacity of the air conditioner. That is, when the capacity of the air conditioner is high, the number of stacked plates is large, and when the capacity of the air conditioner is low, the number of stacked plates is small. Therefore, in the heat exchanger unit of Patent Document 1, a holding case having a plurality of sizes having different dimensions on the back surface, the upper surface, the lower surface, and both side surfaces according to the capacity of the air conditioner, that is, the capacity of the plate heat exchanger, and a holding case thereof. It was necessary to have a base sheet metal for fixing the heat and a main heat insulating material of multiple sizes.

However, in such a conventional heat exchanger unit, a holding case for covering the plate heat exchanger must be separately prepared for each plate heat exchanger having a different thickness according to the capacity of the air conditioner. There was a problem that the score increased. Further, as the number of parts increases, the assembling man-hours also increase, which causes a problem that the configuration becomes complicated and the assembling property deteriorates.

The present disclosure is for solving the above problems, and is a heat exchanger capable of reducing the number of parts to be prepared according to the capacity of the plate heat exchanger, reducing the assembly man-hours, and improving the assembling property. It is intended to provide units and outdoor units.

The heat exchanger unit according to the present disclosure includes a plate heat exchanger in which a plurality of plates are laminated, a holding case for accommodating the plate heat exchanger, and a pedestal portion for fixing the holding case to the attached portion. A heat exchanger unit comprising, wherein the holding case includes a front portion covering the front surface of the plate heat exchanger, a first holding member having an upper surface portion covering the upper surface, and the plate heat exchanger. The first holding member and the second holding member include a back surface portion covering the back surface, a bottom surface portion covering the bottom surface, and a second holding member having a right side surface portion and a left side surface portion covering the right side surface and the left side surface. Is fixed, the second holding member and the pedestal portion are fixed, and the dimension in the depth direction in the accommodating portion of the plate heat exchanger composed of the first holding member and the second holding member is determined. It can be adjusted according to the number of stacked plates constituting the plate heat exchanger.

Further, the outdoor unit according to the present disclosure is provided with the above heat exchanger unit in the refrigerant circuit.

According to the present disclosure, in the holding case of the heat exchanger unit, the depth dimension of the accommodating portion of the plate type heat exchanger composed of the first holding member and the second holding member constitutes the plate type heat exchanger. It can be adjusted according to the number of stacked plates. Therefore, it is possible to reduce the number of different parts for forming the holding case prepared according to the capacity of the plate heat exchanger. Thus, according to the heat exchanger unit and the outdoor unit according to the present disclosure, the number of parts to be prepared according to the capacity of the plate heat exchanger can be reduced, the number of assembly steps can be reduced, and the assembling property can be improved.

It is a schematic diagram which shows the refrigerant circuit of the outdoor unit which mounted the heat exchanger unit which concerns on Embodiment 1. FIG. It is a perspective view which shows the appearance of the outdoor unit of FIG. It is a top view which shows the internal structure of the outdoor unit of FIG. It is a perspective view which shows the main part in the outdoor unit of FIG. It is an exploded perspective view which shows the heat exchanger unit of FIG. It is an exploded perspective view which shows the plate type heat exchanger in the heat exchanger unit of FIG. It is a perspective view which shows the 1st holding member in the heat exchanger unit of FIG. It is a perspective view which shows the 2nd holding member in the heat exchanger unit of FIG. It is a perspective view which shows the pedestal part in the heat exchanger unit of FIG. FIG. 5 is a perspective view showing a comparison between a state in which the volume of the plate heat exchanger in the heat exchanger unit of FIG. 5 is the minimum and a state in which the volume is the maximum. It is a perspective view provided for the description of another aspect in the heat exchanger unit of FIG.

Hereinafter, the embodiment of the heat exchanger unit and the outdoor unit according to the present disclosure will be described with reference to the case where the heat exchanger unit and the outdoor unit are applied to the outdoor unit of the air conditioner as an example. It should be noted that the forms of the components shown in the entire specification are merely examples and are not limited to these descriptions. That is, the present disclosure can be appropriately modified to the extent that it does not contradict the gist or idea that can be read from the scope of claims and the entire specification. Further, the heat exchanger unit and the outdoor unit accompanied by such a change are also included in the technical idea of the present disclosure. Further, in each figure, those having the same reference numerals are the same or equivalent thereof, which are common in the whole text of the specification. Therefore, in each figure, duplicate explanations regarding those having the same reference numerals shall be omitted as appropriate.

Embodiment 1.
<Outdoor unit 2>
The refrigerant circuit of the outdoor unit 2 on which the heat exchanger unit 10 according to the first embodiment is mounted will be described with reference to FIG. FIG. 1 is a schematic view showing a refrigerant circuit of an outdoor unit 2 on which the heat exchanger unit 10 according to the first embodiment is mounted.

The outdoor unit 2 is a device that heats water to produce hot water or cools water to produce cold water by a refrigeration cycle, and is a kind of water heat exchange device of a refrigerating air conditioner. The refrigerant circuit of the outdoor unit 2 has a configuration as shown in FIG. In FIG. 1, a high-temperature, high-pressure gas refrigerant is supplied from a compressor 21 to a plate-type heat exchanger 100 included in the heat exchanger unit 10 of the first embodiment via a refrigerant pipe 4, and the plate-type heat exchanger The case where the water entering the water circuit of 100 is heated is shown. The compressor 21 compresses a refrigerant such as R410A into a high-temperature, high-pressure gas refrigerant, which is supplied to the plate heat exchanger 100 via a flow path switching device 22 such as a four-way valve.

In the plate heat exchanger 100, the refrigerant and water are countercurrent, heat exchange is performed between the refrigerant and water, and the water is heated. The liquid refrigerant flowing out of the plate heat exchanger 100 is supercooled (with a subcool) by the electronic expansion valve 23b and enters the accumulator 24. Further, the pressure is reduced by the electronic expansion valve 23a to become a two-phase refrigerant, which evaporates by the air-refrigerant heat exchanger 25 to become a low-pressure gas refrigerant, and returns from the suction muffler 21a to the compressor 21 via the flow path switching device 22. The high-temperature water heated by the plate heat exchanger 100 is supplied to a hot water supply tank, a fan coil unit, etc., which are not shown.

Further, when the water is cooled by the plate heat exchanger 100, the flow of the refrigerant is in the opposite direction to the above. The compressor 21 compresses the refrigerant into a high-temperature, high-pressure gas refrigerant, which is supplied to the air-refrigerant heat exchanger 25 via the flow path switching device 22. The liquid refrigerant flowing out of the air-refrigerant heat exchanger 25 is supercooled by the electronic expansion valve 23a and enters the accumulator 24. Further, the pressure is reduced by the electronic expansion valve 23b to become a two-phase refrigerant, which evaporates by the plate heat exchanger 100 to become a low-pressure gas refrigerant. In the plate heat exchanger 100, the refrigerant and water flow in parallel, heat exchange is performed between the refrigerant and water, and the water is cooled. The low-pressure gas refrigerant flowing out of the plate heat exchanger 100 passes through the suction muffler 21a via the flow path switching device 22 and returns to the compressor 21. The water cooled by the plate heat exchanger 100 is supplied to, for example, a fan coil unit and used for cooling or the like.

<Outdoor unit 2>
Next, the outdoor unit 2 according to the first embodiment will be described with reference to FIGS. 2 to 4. FIG. 2 is a perspective view showing the appearance of the outdoor unit 2 of FIG. FIG. 3 is a top view showing the internal structure of the outdoor unit 2 of FIG. FIG. 4 is a perspective view showing a main part of the outdoor unit 2 of FIG. Here, the main part refers to the heat exchanger unit 10 according to the first embodiment. FIG. 4 shows the installation state of the heat exchanger unit 10 inside the outdoor unit 2.

As shown in FIG. 2, in the outdoor unit 2, the housing panel 20 that covers the outer shell is formed in a rectangular parallelepiped shape. The outdoor unit 2 is, for example, an outdoor unit of a separate air conditioner, and includes a front grill 20a on which air is blown out on the front side of the housing panel 20.

As shown in FIG. 3, the inside of the housing panel 20 of the outdoor unit 2 is divided into an air passage chamber 26 and a machine room 27 by a partition plate 20b. An outdoor blower 25a for an air-refrigerant heat exchanger 25 that exchanges heat between air and a refrigerant is installed on the front side of the housing panel 20 in the air passage chamber 26. Further, on the back side of the outdoor blower 25a in the air passage chamber 26, an air-refrigerant heat exchanger 25 is mounted in an L shape from the back side to the side surface side of the air passage chamber 26 of the housing panel 20.

As shown in FIG. 4, a compressor 21 is installed in the machine room 27, which is connected to the air-refrigerant heat exchanger 25 via the refrigerant pipe 4 and supplies the refrigerant to the air-refrigerant heat exchanger 25. Has been done. Further, in the machine room 27, an accumulator 24 for storing the refrigerant, a flow path switching device 22 for switching the flow of the refrigerant (see FIG. 1), and a plate heat exchanger 100 for heat exchange between the refrigerant and water (FIG. 1). A heat exchanger unit 10 including (see 1) is installed. Although the details will be described later, the heat exchanger unit 10 includes a holding case 11 having a first holding member 12, a second holding member 13, and a pedestal portion 14, and is outdoors in the housing panel 20 of the outdoor unit 2. It is fixed to the machine base 20c by spot welding. Further, a refrigerant pipe 4 for circulating a refrigerant is connected to the heat exchanger unit 10 with the compressor 21. In addition, although not shown, the machine room 27 includes

electronic expansion valves

23a and 23b (see FIG. 1) used as a refrigerant decompression device, a current sensor for detecting the presence / absence of operation of the outdoor unit 2, a power module, and a power module. It is equipped with an electrical component box in which electrical components such as an inverter board are stored.

<Heat exchanger unit 10>
Next, the heat exchanger unit 10 according to the first embodiment will be described with reference to FIGS. 5 to 10. FIG. 5 is an exploded perspective view showing the heat exchanger unit 10 of FIG. FIG. 6 is an exploded perspective view showing the plate heat exchanger 100 in the heat exchanger unit 10 of FIG. FIG. 7 is a perspective view showing the first holding member 12 in the heat exchanger unit 10 of FIG. FIG. 8 is a perspective view showing the second holding member 13 in the heat exchanger unit 10 of FIG. FIG. 9 is a perspective view showing a pedestal portion 14 in the heat exchanger unit 10 of FIG. FIG. 10 is a perspective view showing a comparison between a state in which the volume of the plate heat exchanger 100 in the heat exchanger unit 10 of FIG. 5 is the minimum and a state in which the volume is the maximum. In FIG. 10, the heat exchanger unit 10 in the minimum volume state is shown as 10A, and the heat exchanger unit 10 in the maximum volume state is shown as 10B.

As shown in FIG. 5, the heat exchanger unit 10 according to the first embodiment is arranged so as to surround the plate heat exchanger 100 in which a plurality of plates are laminated and the plate heat exchanger 100. A heat insulating material 3 and a holding case 11 for accommodating the plate heat exchanger 100 are provided. The holding case 11 is composed of a first holding member 12, a second holding member 13, and a pedestal portion 14. In the holding case 11, the first holding member 12 and the second holding member 13 are fixed, and the second holding member 13 and the pedestal portion 14 are fixed and integrally formed. In the case of the first embodiment, in the holding case 11, the dimension in the depth direction of the accommodating portion 15 of the plate type heat exchanger 100 composed of the first holding member 12 and the second holding member 13 is the plate type heat exchange. It can be adjusted according to the number of stacked plates constituting the vessel 100.

Here, although a known plate heat exchanger 100 is used in the first embodiment, the internal configuration will be briefly described with reference to FIG. As shown in FIG. 6, in the plate heat exchanger 100, the refrigerant pipe connection port 101a is provided on one of the outermost plates 101, and the water pipe connection port 102a is provided on the other outermost plate 102. Provided. Between the

outermost plates

101 and 102, heat transfer plates 103 having a plurality of corrugated irregularities formed on the surface are arranged side by side. Refrigerant flow paths 104 and water flow paths 105 are alternately formed between the heat transfer plates 103. Then, the heat transfer plate 103 is provided with a refrigerant communication hole 106 that connects each refrigerant flow path 104 and the refrigerant pipe connection port 101a. Further, the heat transfer plate 103 is provided with a water communication hole 107 for connecting each water flow path 105 and the water pipe connection port 102a. In the plate heat exchanger 100, the number of heat transfer plates 103 is changed depending on the capacity band.

Among the holding cases 11, the first holding member 12 has a front surface portion 121 that covers the front surface of the plate heat exchanger 100 (see FIG. 5) and an upper surface portion 122 that covers the upper surface, as shown in FIG. Further, the first holding member 12 extends from the left and right side edges of the front surface portion 121 to the back surface side of the plate heat exchanger 100, respectively, and the right flange portion 123 and the left flange portion 124 are formed with

screw holes

123a and 124a, respectively. Have. The screw holes 123a and 124a are formed in the right flange portion 123 and the left flange portion 124, respectively, at three locations side by side in the vertical direction. A notch 121a through which a refrigerant pipe 4 (see FIG. 4) connected to the plate heat exchanger 100 is passed is formed in the front surface portion 121. In this case, the notch portion 121a has a U-shape, for example, and is formed at two upper and lower positions by opening in the front surface portion 121 in the assembling direction with the plate heat exchanger 100. As a result, the heat exchanger unit 10 can be assembled even after the refrigerant pipe 4 is welded to the plate heat exchanger 100. Further, the upper surface portion 122 is formed with a screw hole 122a for a screw used for fixing to the second holding member 13.

Among the holding cases 11, as shown in FIG. 8, the second holding member 13 includes a back surface portion 131 covering the back surface of the plate heat exchanger 100 (see FIG. 5), a bottom surface portion 132 covering the bottom surface, and a right side surface. And has a right side surface portion 133 and a left side surface portion 134 that cover the left side surface. Further, the second holding member 13 extends from the upper edge of the back surface portion 131 to the front side of the plate heat exchanger 100, and a screw fixing hole 135a for a screw used for fixing to the first holding member 12 is formed. It has a raised upper flange portion 135. The right side surface portion 133 and the left side surface portion 134 are formed with

elongated holes

133a and 134a extending in the horizontal direction, respectively. The

elongated holes

133a and 134a are formed side by side at three locations in the vertical direction of the right side surface portion 133 and the left side surface portion 134, respectively. The vertical spacing of the three

elongated holes

133a and 134a, respectively, coincides with the vertical spacing of the three

screw holes

123a and 124a in the right flange portion 123 and the left flange portion 124 of the first holding member 12, respectively. .. Further, the second holding member 13 is formed with two holes 131a above and below the back surface 131 through which the water pipe connection port 102a (see FIG. 5) included in the plate heat exchanger 100 is passed. The bottom surface portion 132 has a flange portion 136 formed extending from the front side edge thereof to the pedestal portion 14 side. Screw fixing

holes

131b, 133b and 136a for screws used for fixing to the pedestal portion 14 are formed in the lower portion of the back surface portion 131, the lower portion of the right side surface portion 133, and the front flange portion 136, respectively. ..

Of the holding cases 11, the pedestal portion 14 is a member that fixes the second holding member 13 of the holding case 11 to the outdoor unit base 20c (see FIG. 4) in the housing panel 20 of the outdoor unit 2 that is the attached portion. .. As shown in FIG. 9, the pedestal portion 14 is formed in a shape corresponding to the bottom surface portion 132 (see FIG. 8 and the like) of the second holding member 13, and has a flat surface portion 141 on which the second holding member 13 is placed. .. The flat surface portion 141 is formed with screw fixing holes 141a for screws used for fixing to the second holding member 13, respectively, on the front side edge, the left and right side edges, and the back side edge. Note that FIG. 9 is a perspective view in which the screw fixing holes 141a on the left side edge and the back side edge of the flat surface portion 141 are located on the shadow side, and thus the illustration is omitted.

Then, in the holding case 11, the first holding member 12 and the second holding member 13 have a screw hole 122a formed in the upper surface portion 122 of the first holding member 12 and an upper flange portion 135 of the second holding member 13. The screws are fixed through the screw fixing holes 135a. Further, in the holding case 11, the first holding member 12 and the second holding member 13 have

screw holes

123a and 124a of the right flange portion 123 and the left flange portion 124 of the first holding member 12, respectively, and the second holding member. It is screwed through the

elongated holes

133a and 134a of the right side surface portion 133 and the left side surface portion 134 of 13. Further, in the holding case 11, the second holding member 13 and the pedestal portion 14 have a screw fixing hole 141a of the flat surface portion 141 of the pedestal portion 14, and a lower portion of the back surface portion 131 and the right side surface portion 133 of the second holding member 13. The screws are fixed through the

screw fixing holes

131b, 133b and 136a of the lower portion and the front flange portion 136. As a result, the holding case 11 has an integral structure of the first holding member 12, the second holding member 13, and the pedestal portion 14 for fixing the second holding member 13 in the housing panel 20 of the outdoor unit 2. Is formed.

In the holding case 11 configured in this way, the fixing position of the first holding member 12 with respect to 13 of the second holding member 13 is arbitrarily set by the

elongated holes

133a and 134a of the right side surface portion 133 and the left side surface portion 134 of the second holding member 13. Can be changed. That is, when the first holding member 12 is screwed to the second holding member 13, the positions of the

screw holes

123a and 124a are set within the length range of the

elongated holes

133a and 134a, and the thickness of the plate heat exchanger 100 is set. It can be freely moved in the horizontal direction according to the above. Therefore, the fixing position of the first holding member 12 with respect to 13 of the second holding member can be arbitrarily changed according to the number of heat transfer plates 103 of the plate heat exchanger 100, so that it is not necessary to prepare a separate part. It can accommodate plate heat exchangers 100 of different capacity bands.

Specifically, as shown in FIG. 10, in the case of the heat exchanger unit 10A in the minimum volume state in which the number of heat transfer plates 103 (see FIG. 6) of the plate heat exchanger 100 is the minimum, the plate heat exchange Since the vessel 100 is thin, the first holding member 12 is fixed to the second holding member 13 at a recessed position in the accommodating portion 15 in the holding case 11. At this time, the positions of the

screw holes

123a and 124a are located at the rear end portions of the

elongated holes

133a and 134a.

On the other hand, in the case of the heat exchanger unit 10B in the maximum volume state in which the number of heat transfer plates 103 (see FIG. 6) of the plate heat exchanger 100 is the maximum, the thickness of the plate heat exchanger 100 is large. The first holding member 12 is fixed to the second holding member 13 at a position close to the front end portion of the accommodating portion 15 in the holding case 11. At this time, the positions of the

screw holes

123a and 124a are located at the front end portions of the

elongated holes

133a and 134a.

As described above, in the heat exchanger unit 10 of the first embodiment, it is not necessary to prepare the second holding member 13 which is a component having a different size for each different capacity band, and all the second holding members 13 are shared. It can be used in the ability band of.

In FIG. 10, the positions of the

screw holes

123a and 124a are located at the rear end of the

elongated holes

133a and 134a in the case of the heat exchanger unit 10A in the minimum volume state, and at the front end. The case of the heat exchanger unit 10B in the maximum volume state is described as an example, but the fixed position of the first holding member 12 with respect to the second holding member 13 is longer depending on the thickness of the plate heat exchanger 100. The

holes

133a and 134a can be fixed at any position in the horizontal direction.

Further, as shown in FIG. 10, the upper surface portion 122 of the first holding member 12 is formed in a size corresponding to the thickness of the plate of the plate heat exchanger 100, that is, the number of heat transfer plates 103 stacked. Is preferable.

Further, in the first embodiment, the case where the

elongated holes

133a and 134a are formed in the right side surface portion 133 and the left side surface portion 134 of the second holding member 13 has been described, but other aspects are also conceivable. Here, another aspect will be described with reference to FIG. FIG. 11 is a perspective view for explaining another aspect of the heat exchanger unit 10 of FIG. As shown in FIG. 11, in the second holding member 13, in addition to forming

elongated holes

133a and 134a in the right side surface portion 133 and the left side surface portion 134, the size of the upper flange portion 135 is extended to the front side. The screw fixing hole 135a may also be formed as a horizontally elongated hole. As a result, it is possible to more flexibly respond to the change of the fixed position of the first holding member 12 with respect to the second holding member 13 according to the number of heat transfer plates 103 of the plate heat exchanger 100. That is, the size of the upper flange portion 135 of the second holding member 13 is extended to the front surface side, and the screw fixing hole 135a is also formed by a long hole, so that the size of the upper surface portion 122 of the first holding member 12 needs to be changed. Can be reduced. Therefore, the width in which the first holding member 12 can be diverted increases, and the number of parts to be prepared according to the capacity of the plate heat exchanger 100 can be further reduced.

<Effect in Embodiment 1>
As described above, according to the heat exchanger unit 10 and the outdoor unit 2 of the first embodiment, in the holding case 11 of the heat exchanger unit 10, the first holding member 12 and the second holding member 13 are used. The depth dimension of the accommodating portion 15 of the plate heat exchanger 100 to be configured can be adjusted according to the number of laminated heat transfer plates 103 constituting the plate heat exchanger 100. Therefore, it is possible to reduce the number of different parts for forming the holding case 11 prepared according to the capacity of the plate heat exchanger 100. Thus, according to the heat exchanger unit 10 and the outdoor unit 2 of the first embodiment, the number of parts to be prepared according to the capacity of the plate heat exchanger 100 is reduced, the number of assembly steps is reduced, and the assembling property is improved. be able to.

2 outdoor unit, 20 housing panel, 20a front grille, 20b partition plate, 20c outdoor unit base, 21 compressor, 21a suction muffler, 22 flow path switching device, 23a electronic expansion valve, 23b electronic expansion valve, 24 accumulator, 25 Flange heat exchanger, 25a outdoor blower, 26 air passage room, 27 machine room, 3 heat insulating material, 4 flange piping, 10 heat exchanger unit, 10A heat exchanger unit, 10B heat exchanger unit, 11 holding case, 12th 1 holding member, 121 front part, 121a notch, 122 upper surface part, 122a screw hole, 123 right flange part, 123a screw hole, 124 left flange part, 124a screw hole, 13 second holding member, 131 back part, 131a hole , 131b screw fixing hole, 132 bottom surface, 133 right side surface, 133a long hole, 133b screw fixing hole, 134 left side, 134a long hole, 135 upper flange, 135a screw fixing hole, 136 flange, 136a screw Fixing hole, 14 pedestal part, 141 flat part, 141a screw fixing hole, 15 accommodating part, 100 plate heat exchanger, 101 plate, 101a refrigerant pipe connection port, 102 plate, 102a water pipe connection port, 103 heat transfer Plate, 104 flange flow path, 105 water flow path, 106 flange communication hole, 107 water communication hole.

Claims

A plate heat exchanger in which multiple plates are stacked, and
A holding case for accommodating the plate heat exchanger and
A heat exchanger unit including a pedestal portion for fixing the holding case to the attached portion.
The holding case is
A front portion that covers the front surface of the plate heat exchanger, and a first holding member having an upper surface portion that covers the upper surface.
A back surface portion covering the back surface of the plate heat exchanger, a bottom surface portion covering the bottom surface, and a second holding member having a right side surface portion and a left side surface portion covering the right side surface and the left side surface are provided.
The first holding member and the second holding member are fixed,
The second holding member and the pedestal portion are fixed and
The dimension in the depth direction of the accommodating portion of the plate heat exchanger composed of the first holding member and the second holding member is adjusted according to the number of stacked plates constituting the plate heat exchanger. Possible, heat exchanger unit.
The upper surface portion of the first holding member is
The heat exchanger unit according to claim 1, which is formed in a size corresponding to the number of laminated plates.
The first holding member is
It has a right flange portion and a left flange portion that extend from the left and right side edges of the front portion to the back side and each has a screw hole formed therein.
The second holding member is
It has an upper flange portion extending from the upper edge of the back surface portion to the front surface side and having a screw fixing hole formed through which a screw for fixing the first holding member is passed.
An elongated hole extending in the horizontal direction is formed on the right side surface portion and the left side surface portion, respectively.
The first holding member and the second holding member
A screw hole formed in the upper surface portion of the first holding member and a screw fixing hole in the upper flange portion of the second holding member are screwed and fixed.
The claim that the first holding member is screwed through the screw holes of the right flange portion and the left flange portion, and the elongated holes of the right side surface portion and the left side surface portion of the second holding member. The heat exchanger unit according to 1 or 2.
The heat exchanger unit according to claim 3, wherein the screw fixing hole formed in the upper flange portion of the second holding member is an elongated hole.
The first holding member is
The heat exchanger unit according to any one of claims 1 to 4, wherein a notch portion through which a refrigerant pipe connected to the plate heat exchanger is passed is formed on the front surface portion.
The second holding member is
A hole is formed in the back surface portion for passing through the pipe connection port provided in the plate heat exchanger.
The heat exchanger unit according to any one of claims 1 to 5, further comprising a flange portion extending from the front side edge of the bottom surface portion to the pedestal portion side and having a screw fixing hole with the pedestal portion.
An outdoor unit equipped with the heat exchanger units of claims 1 to 6 in the refrigerant circuit.