WO2023188886A1

WO2023188886A1 - Plate-type heat exchanger and mobile heat pump device

Info

Publication number: WO2023188886A1
Application number: PCT/JP2023/004849
Authority: WO
Inventors: 山本真也
Original assignee: 株式会社豊田自動織機
Priority date: 2022-03-30
Filing date: 2023-02-13
Publication date: 2023-10-05
Also published as: JP2023148724A

Abstract

A plate-type heat exchanger (1) according to the present invention is further provided with a partition plate (13, 15) between a pair of spacers (5) where a plurality of heat exchange plates (3) and a plurality of spacers (5) are separated. The partition plate (13, 15) is provided with at least one of: a first supplementary fluid supply port capable of supplying a first fluid (R) to a first fluid path (F1); a first supplementary fluid discharge port capable of discharging the first fluid (R) from the first fluid path (F1); a second supplementary fluid supply port (14a) capable of supplying a second fluid (L) to a second fluid path (F2); and a second supplementary fluid discharge port (14b) capable of discharging the second fluid (L) from the second fluid path (F2).

Description

Plate heat exchanger and mobile heat pump device

The present invention relates to a plate heat exchanger and a heat pump device for a moving object.

A conventional plate heat exchanger is disclosed in Patent Document 1. This plate heat exchanger includes a plurality of heat exchange plates, a plurality of gaskets, a partition plate, a first end plate, a second end plate, a fixed frame, a support rod, a guide lock, It has a movable frame.

Each heat exchange plate has a plate shape. Each heat exchange plate has a partitioned heat exchange area, and has a first opening, a second opening, a third opening, and a fourth opening extending through the heat exchange area. Each gasket is attached to the front or back side of the heat exchange plate. The partition plate is provided between the pair of gaskets. The first end plate and the second end plate sandwich each heat exchange plate, each gasket, and the partition plate. The fixed frame, support rod, guide lock, and movable frame are fastened by stacking each heat exchange plate, each gasket, partition plate, first end plate, and second end plate.

Two sets of each heat exchange plate are prepared, which are alternately stacked. Each gasket connects the first opening, the second opening, and the heat exchange area as a first fluid path with respect to the heat exchange plate on one side, and disconnects the third opening, the fourth opening, and the heat exchange area from each other. shall be. Further, each gasket communicates the third opening and the fourth opening with the heat exchange area as a second fluid path with respect to the heat exchange plate on the other side, and connects the first opening and the second opening with the heat exchange area. There will be no communication.

The first end plate or the second end plate includes a first fluid supply port capable of supplying the first fluid to the first fluid path, and a first fluid discharge port capable of discharging the first fluid from the first fluid path. A second fluid supply port capable of supplying the second fluid to the second fluid path and a second fluid discharge port capable of discharging the second fluid from the second fluid path are provided.

This plate heat exchanger can exchange heat between the first fluid in the first fluid path and the second fluid in the second fluid path without the need to braze each heat exchange plate. Therefore, this plate-type heat exchanger can reduce the manufacturing cost by eliminating the trouble of brazing, and can also ensure a degree of freedom in selecting the material of each heat exchange plate. In addition, in this plate heat exchanger, since the partition plate divides the first fluid path or the second fluid path into a plurality of parts, it is possible to perform heat exchange at different temperatures between the first fluid and the second fluid. can.

Japanese Patent Application Publication No. 3-91695

However, in the above-mentioned conventional plate heat exchanger, since the partition plate only divides the first fluid path or the second fluid path into a plurality of parts, the first fluid supply port is connected to the first end plate or the second end plate. The first fluid outlet, the second fluid supply port, and the second fluid outlet all have to be provided, which tends to complicate the piping and flow paths of the device that employs the plate heat exchanger.

There are concerns about the ease with which a heat pump device for a mobile body equipped with this plate heat exchanger can be mounted on a mobile body such as a vehicle.

The present invention has been made in view of the above-mentioned conventional situation, and an object to be solved is to provide a plate heat exchanger that can simplify the piping and flow paths of the device. Another object of the present invention is to provide a heat pump device for a moving body that is equipped with such a plate heat exchanger and has excellent mountability on a moving body.

The plate heat exchanger of the present invention has a plate shape, has a divided heat exchange area, and has first openings, second openings, third openings, and fourth openings extending through the heat exchange area. multiple heat exchange plates,
a first fluid path that has a plate shape with the heat exchange plate sandwiched therebetween, and allows a first fluid to flow through the heat exchange area through two of the first to fourth openings and the heat exchange area; Two openings other than the opening constituting the first fluid path among the first to fourth openings and the heat exchange area cause the heat exchanger to flow through the second fluid path through which the second fluid flows through the heat exchange area. multiple spacers formed on the replacement plate;
a first end plate and a second end plate that sandwich the heat exchange plate and the spacer;
A plurality of fastening members that stack and fasten the heat exchange plate, the spacer, the first end plate, and the second end plate,
A plate heat exchanger that exchanges heat between the first fluid in the first fluid path and the second fluid in the second fluid path,
The first end plate or the second end plate includes a main first fluid supply port that can supply the first fluid to the first fluid path, and a main fluid supply port that can discharge the first fluid from the first fluid path. a first fluid discharge port, a main second fluid supply port capable of supplying the second fluid to the second fluid path, and a main second fluid discharge port capable of discharging the second fluid from the second fluid path; At least one of the following is provided,
A sub-first fluid supply port capable of supplying the first fluid to the first fluid path, a sub-first fluid discharge port capable of discharging the first fluid from the first fluid path, between the pair of spacers; At least one of a sub-second fluid supply port capable of supplying the second fluid to the second fluid path and a sub-second fluid discharge port capable of discharging the second fluid from the second fluid path is provided. It is characterized in that a partition plate is further provided.

In the plate heat exchanger of the present invention, spacers and heat exchange plates are alternately stacked, such as a spacer, a heat exchange plate, a spacer, a heat exchange plate, ..., a spacer. Further, the first end plate and the second end plate sandwich each heat exchange plate and each spacer. A plurality of fastening members fasten each heat exchange plate, each spacer, the first end plate, and the second end plate.

Each spacer connects the first fluid path to the heat exchange region to allow the first fluid to flow therethrough, or connects the second fluid path to the heat exchange area to allow the second fluid to flow therethrough. During this time, the first fluid path and the second fluid path are only separated by the heat exchange plate. Therefore, heat exchange is performed between the first fluid in the first fluid path and the second fluid in the second fluid path.

Here, in this plate heat exchanger, a partition plate is further provided between the pair of spacers. The first end plate or the second end plate is provided with at least one of a main first fluid supply port, a main first fluid discharge port, a main second fluid supply port, and a main second fluid discharge port. Further, the partition plate is provided with at least one of a sub-first fluid supply port, a sub-first fluid discharge port, a sub-second fluid supply port, and a sub-second fluid discharge port.

Therefore, the first fluid is not only supplied from the main first fluid supply port but also from the sub-first fluid supply port, and the first fluid is not only discharged from the main first fluid discharge port but also from the sub-first fluid supply port. 1. The fluid can be discharged from the fluid outlet. Similarly, the second fluid is supplied not only from the main second fluid supply port but also from the sub second fluid supply port, and the second fluid is not only discharged from the main second fluid discharge port but also from the sub second fluid supply port. 2. It can be discharged from the fluid outlet. By changing the heat exchange ability between the first fluid and the second fluid depending on the position of the partition plate, the discharged first fluid and second fluid can be used for various heating and cooling purposes.

Therefore, even if the plate heat exchanger of the present invention is a single device, piping and flow paths can be simplified.

The partition plate may or may not divide the first fluid path or the second fluid path into a plurality of parts. If the partition plate does not divide the first fluid path, the partition plate can allow the first fluid path to communicate in the stacking direction. If the partition plate does not divide the second fluid path, the partition plate can allow the second fluid path to communicate in the stacking direction.

A plurality of partition plates may be provided between a pair of spacers. In this case, it becomes possible to connect more piping from a single plate heat exchanger, and the piping and flow paths can be further simplified.

The first end plate or the second end plate may be provided with a main first fluid supply port, a main first fluid discharge port, a main second fluid supply port, and a main second fluid discharge port. Further, the partition plate may be provided with a sub-second fluid supply port and a sub-second fluid discharge port. In this case, while the first fluid and the second fluid are supplied and discharged from the first end plate or the second end plate, the second fluid can be supplied and discharged from the partition plate. Therefore, it is easy to simplify the piping and flow paths around the plate heat exchanger and to utilize heating and cooling by the first fluid and the second fluid.

The spacer may have a frame, a communication port formed in the frame, a wall formed to narrow the communication port from the frame, and an insertion port penetrating the wall. The wall part communicates the second opening and the third opening with the heat exchange area while keeping the first opening and the fourth opening non-communicated with the heat exchange area, or the second opening and the third opening are not communicated with the heat exchange area. The first opening and the fourth opening may be in communication with the heat exchange zone. If the wall part does not communicate the first opening and the fourth opening with the heat exchange area, the insertion opening communicates the first opening on one side with the first opening on the other side, and connects the fourth opening on one side with the other side. It may communicate with a fourth opening on the side. In addition, if the wall part does not communicate the second opening and the third opening with the heat exchange area, the insertion opening communicates the second opening on one side with the second opening on the other side, and the third opening on one side. may communicate with the third opening on the other side.

The heat pump device for a moving object of the present invention is characterized in that the plate heat exchanger and an electric compressor in which a compression mechanism and an electric motor are provided in a housing are fastened together by a fastening member.

This heat pump device for a mobile body integrates the plate heat exchanger of the present invention and an electric compressor, and improves mountability on a mobile body such as a vehicle. Further, by applying a fastening force to the first end plate, each heat exchange plate, each spacer, partition plate, and second end plate using the fastening member, the sealing force of the plate heat exchanger can be improved. Moreover, it can be integrated with an electric compressor using the same fastening member.

It is preferable that at least one of the first end plate and the second end plate constitutes a housing. In this case, the integrity of the heat pump device for a moving object is enhanced, and the mountability on the moving object is further improved.

The plate heat exchanger of the present invention can simplify the piping and flow paths of the device. Moreover, the heat pump device for a moving body of the present invention exhibits excellent mounting property on a moving body.

FIG. 1 is an exploded perspective view of a plate heat exchanger according to an embodiment, viewed from one side. FIG. 2 is an exploded perspective view of the plate heat exchanger of the embodiment as seen from the other side. FIG. 3 is a plan view of one side of a heat exchange plate used in the plate heat exchanger of the example. FIG. 4 is a plan view of a spacer used in the plate heat exchanger of the example. FIG. 5 is a perspective view of the plate heat exchanger according to the embodiment, viewed from one side. FIG. 6 is a perspective view of the plate heat exchanger according to the embodiment, viewed from the other side. FIG. 7 is a schematic perspective view showing the flow of refrigerant and coolant in the plate heat exchanger of the example. FIG. 8 is an enlarged sectional view of the plate heat exchanger of the example. FIG. 9 is a front view of a heat pump device for a moving body according to an example.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the plate heat exchanger 1 of the embodiment includes 10

heat exchange plates

3, 13 spacers 5, 1 first end plate 7, and 1 end plate 7. It consists of a second end plate 9, two

partition plates

13 and 15, and six bolts 11.

As shown in FIG. 3, each heat exchange plate 3 has a rectangular plate shape having long sides and short sides when viewed from above. The four corners of each heat exchange plate 3 are chamfered. Each heat exchange plate 3 is made of aluminum alloy or stainless steel.

At the center of each heat exchange plate 3, an uneven portion 3a is formed. When the surface 3S on one side of the heat exchange plate 3 is taken as the surface, the uneven portion 3a is formed by a plurality of rows of ridges protruding toward the front from the surface 3S on the one side and valleys recessed inward from the surface 3S on the one side. There is. In the uneven portion 3a, the V-shape is tilted to the right on the surface 3S on one side, and as shown in FIG. 4, the V-shape is tilted to the left on the surface 3B on the other side. The uneven portion 3a corresponds to a heat exchange area.

Each heat exchange plate 3 does not require reversal or rotation, although the direction of inclination of the concavo-convex portions 3a can be reversed by reversing the front and back.

As shown in FIG. 3, a first opening 3b and a second opening 3c are provided at one longitudinal end of the uneven portion 3a along the short side, and a first opening 3b and a second opening 3c are provided at the other longitudinal end of the uneven portion 3a. The third opening 3d and the fourth opening 3e are also provided through the short side. The first opening 3b, the second opening 3c, the third opening 3d, and the fourth opening 3e are all circular holes with the same diameter.

A total of six bolt holes 3k are provided in the four corners of each heat exchange plate 3 and in the center near the long sides. Each bolt hole 3k is a circular hole with the same diameter.

The first to fourth openings 3b to 3e, the uneven portion 3a, and each bolt hole 3k are formed by press-molding a plate material.

As shown in FIG. 8, each spacer 5 consists of a plate-shaped stainless steel spacer body 5B and rubber sealing layers 5S, 5S formed on both sides of the spacer body 5B.

As shown in FIG. 4, each spacer 5 includes a frame portion 5a whose outer periphery coincides with that of the heat exchange plate 3, a communication port 5b formed in the frame portion 5a, and a communication port 5b narrowed from the frame portion 5a. It consists of formed

wall portions

5m, 5n and

insertion holes

5d, 5e provided through the

wall portions

5m, 5n. The

wall portions

5m and 5n are located on one diagonal line and the other side of the communication port 5b. The insertion port 5d is provided through the wall portion 5m, and the insertion port 5e is provided through the wall portion 5n.

Each spacer 5 has a spacer axis O2 extending parallel to the short side. Therefore, by inverting the front and back sides of each spacer 5 around the spacer axis O2, in the figure, the upper right wall 5m becomes the upper left communication port 5b, and the upper left communication port 5b becomes the upper right communication port 5b. The wall length is 5m. Furthermore, the lower left wall portion 5n is used as the lower right communication port 5b, and the lower right communication port 5b is used as the lower left wall portion 5n.

The insertion holes 5d and 5e are circular holes with the same diameter. Regardless of whether each spacer 5 is on the front side or the back side, the insertion opening 5d is aligned with the first opening 3b or the third opening 3d of the heat exchange plate 3, and the insertion opening 5e is aligned with the second opening 3b of the heat exchange plate 3. It is aligned with the opening 3c or the fourth opening 3e.

A total of six bolt holes 5f are provided at the four corners of each spacer 5 and at the center near the long side. Each bolt hole 5f is a circular hole with the same diameter, and is aligned with the bolt hole 3k of the heat exchange plate 3, respectively.

The communication port 5b, the

insertion ports

5d and 5e, and each bolt hole 5f are formed by press-molding a plate material before forming the seal layer 5S.

As shown in FIGS. 1 and 2, a total of six bolt holes 7a are provided through the first end plate 7. Each bolt hole 7a is a circular hole with the same diameter, and is aligned with the bolt hole 3k of the heat exchange plate 3 and the bolt hole 5f of the spacer 5, respectively.

A total of six bolt holes 9a are recessed in the second end plate 9. Each bolt hole 9a is a female thread having the same diameter, and is aligned with the bolt hole 3k of the heat exchange plate 3, the bolt hole 5f of the spacer 5, and the bolt hole 7a of the first end plate 7, respectively. Each bolt hole 9a is screwed into the male thread of the bolt 11.

The second end plate 9 also has a main first fluid supply port 9b, a main first fluid discharge port 9e, a main second fluid supply port 9d, and a main second fluid discharge port 9c. It runs straight through in the direction. The main first fluid supply port 9b is aligned with the first opening 3b or third opening 3d of the heat exchange plate 3, and the main first fluid outlet 9e is aligned with the second opening 3c or fourth opening 3e of the heat exchange plate 3. are doing. Further, the main second fluid supply port 9d is aligned with the third opening 3d or the first opening 3b of the heat exchange plate 3, and the main second fluid discharge port 9c is aligned with the fourth opening 3e or the second opening 3c of the heat exchange plate 3. It is consistent with

The partition plate 13 is provided between a pair of spacers 5 that are separated from each other by three heat exchange plates 3 and four spacers 5 from one side. Further, the partition plate 15 is provided between a pair of spacers 5 separated from the partition plate 13 by three heat exchange plates 3 and four spacers 5.

A sub-second fluid supply port 14a and a sub-second fluid discharge port 14b are formed in each of the

partition plates

13 and 15. The sub second fluid supply port 14a and the sub second fluid discharge port 14b are open to one side of the

partition plates

13 and 15, and are bent to one side within the

partition plates

13 and 15. It is open on one side of 15.

Further, connection holes 14c and 14d are provided in each of the

partition plates

13 and 15 in a straight line in the thickness direction of the

partition plates

13 and 15. The connection hole 14c is aligned with the first opening 3b or the third opening 3d of the heat exchange plate 3, and the connection hole 14d is aligned with the second opening 3c or the fourth opening 3e of the heat exchange plate 3.

Furthermore, each

partition plate

13, 15 is provided with a total of six bolt holes 14e. Each bolt hole 9a is a circular hole with the same diameter, and is respectively a bolt hole 3k of the heat exchange plate 3, a bolt hole 5f of the spacer 5, a bolt hole 7a of the first end plate 7, and a bolt hole of the second end plate 9. 9a.

As shown in FIGS. 1 and 2, this plate heat exchanger 1 includes a spacer 5, a heat exchange plate 3, a spacer 5, a heat exchange plate 3,..., a spacer 5, a partition plate 13, a spacer 5,..., a spacer 5, partition plates 15 and spacers 5, spacers 5 and heat exchange plates 3 are stacked alternately, and

partition plates

13 and 15 are stacked between predetermined spacers 5 and spacers 5. At this time, the spacers 5 are alternately reversed around the spacer axis O2.

Further, the first end plate 7 and the second end plate 9 sandwich each heat exchange plate 3, each spacer 5, and

partition plates

13 and 15. Then, the six bolts 11 are inserted through the

bolt holes

7a, 5f, 3k, and 14e, and are screwed into the bolt hole 9a. In this way, each heat exchange plate 3, each spacer 5, each

partition plate

13, 15, first end plate 7, and second end plate 9 are fastened. Each bolt 11 corresponds to a fastening member.

In the obtained plate heat exchanger 1, as shown in FIGS. 5 and 6, the main first fluid supply port 9b of the second end plate 9 is connected to the supply path for the refrigerant R, and the main first fluid exhaust port 9b is connected to the main first fluid supply port 9b of the second end plate 9. A discharge path for refrigerant R is connected to the outlet 9e. Refrigerant R is the first fluid. Further, a supply path for the coolant L is connected to the main second fluid supply port 9d of the second end plate 9, and a discharge path for the coolant L is connected to the main second fluid discharge port 9c. Further, a supply path for the coolant L is also connected to the sub-second fluid supply port 14a of each

partition plate

13, 15, and a discharge path for the coolant L is also connected to the sub-second fluid discharge port 14b. Coolant L is the second fluid.

In this plate heat exchanger 1, as shown in FIGS. 4 and 8, each spacer 5 has

walls

5m and 5n located at the upper right and lower left as shown in FIG. The second opening 3c and the third opening 3d are communicated with the uneven portion 3a while the opening 3b and the fourth opening 3e are not communicated with the uneven portion 3a. At this time, the

insertion holes

5d and 5e communicate the first opening 3b on one side with the first opening 3b on the other side, and communicate the fourth opening 3e on one side with the fourth opening 3e on the other side.

Furthermore, if the

walls

5m and 5n are located at the upper left and lower right of FIG. The fourth opening 3e communicates with the uneven portion 3a. At this time, the

insertion holes

5d and 5e communicate the second opening 3c on one side with the second opening 3c on the other side, and communicate the third opening 3d on one side with the third opening 3d on the other side.

That is, as shown in FIG. 8, each spacer 5 allows the refrigerant R to flow through the first fluid path F1 by communicating with the uneven portion 3a sandwiched between the pair of heat exchange plates 3 in the communication port 5b, and The fluid path F2 is communicated to allow the coolant L to flow. The same applies to the portion sandwiched between the heat exchange plate 3 and the first end plate 7 and the portion sandwiched between the heat exchange plate 3 and the second end plate 9.

In this way, in this plate heat exchanger 1, as shown in FIG. 7, a part of the refrigerant R supplied from the main first fluid supply port 9b flows into the first fluid path F1 on the other side. The refrigerant R in the first fluid path F1 on the other side is discharged from the main first fluid discharge port 9e. Further, the refrigerant R other than the refrigerant R supplied from the main first fluid supply port 9b to the first fluid path F1 on the other side flows into the second stage first fluid path F1 from the other side via the insertion port 5d. . The refrigerant R in the first fluid path F1 in the second stage from the other side is discharged from the main first fluid discharge port 9e via the insertion port 5e. The refrigerant R other than the refrigerant R supplied from the main first fluid supply port 9b to the first fluid path F1 on the other side and from the other side to the second stage first fluid path F1 passes through the insertion port 5d and the connection hole 14c. It flows into the third stage first fluid path F1 from the other side. The refrigerant R in the first fluid path F1 in the third stage from the other side is discharged from the main first fluid discharge port 9e via the insertion port 5e and the connection hole 14d. The refrigerant R is supplied from the main first fluid supply port 9b to the first fluid path F1 on the other side, the first fluid path F1 on the second stage from the other side, and the first fluid path F1 on the third stage from the other side. The other refrigerant R flows into the first fluid path F1 on one side through the insertion port 5d and the connection hole 14c. The refrigerant R in the first fluid path F1 on one side is discharged from the main first fluid discharge port 9e via the insertion port 5e and the connection hole 14d.

At the same time, the coolant L supplied from the main second fluid supply port 9d flows into the second fluid path F2 on the other side via the insertion port 5d. A portion of the coolant L in the second fluid path F2 on the other side is discharged from the main second fluid discharge port 9c via the insertion port 5e.

Furthermore, the coolant L supplied from the sub-second fluid supply port 14a flows into the central second fluid path F2 and is discharged from the sub-second fluid discharge port 14b. Furthermore, the coolant L supplied from the sub-second fluid supply port 14a flows into the second fluid passage F2 on one side, and is discharged from the sub-second fluid discharge port 14b.

During this time, the first fluid path F1 and the second fluid path F2 are only separated by the heat exchange plate 3. The refrigerant R flowing through the first fluid path F1 effectively absorbs or radiates heat from the heat exchange plate 3 through the uneven portions 3a having a large contact area. Moreover, the coolant L flowing through the second fluid path F2 also effectively radiates or absorbs heat to the heat exchange plate 3 due to the uneven portions 3a having a large contact area. In this way, heat exchange is performed between the refrigerant R in the first fluid path F1 and the coolant L in the second fluid path F2.

The refrigerant R flowing through the first fluid path F1 and the coolant L flowing through the second fluid path F2 flow diagonally through the communication port 5b of the spacer 5, and since the uneven portion 3a is V-shaped, heat exchange is possible. High efficiency.

Here, in this plate heat exchanger 1,

partition plates

13 and 15 are further provided between a pair of spacers 5 that separate the plurality of heat exchange plates 3 and the plurality of spacers 5. Each

partition plate

13, 15 does not divide the first fluid path F1, but divides the second fluid path F2 into three. Further, the second end plate 9 is provided with a main first fluid supply port 9b, a main first fluid discharge port 9e, a main second fluid supply port 9d, and a main second fluid discharge port 9c. Further, each

partition plate

13, 15 is provided with a sub-second fluid supply port 14a and a sub-second fluid discharge port 14b.

Therefore, even if the plate heat exchanger 1 is a single device, piping and flow paths can be simplified.

In particular, in this plate heat exchanger 1, the second end plate 9 is provided with a main first fluid supply port 9b, a main first fluid discharge port 9e, a main second fluid supply port 9d, and a main second fluid discharge port 9c. Each

partition plate

13, 15 is provided with a sub-second fluid supply port 14a and a sub-second fluid discharge port 14b. Therefore, the refrigerant R is only supplied from the main first fluid supply port 9b, but the coolant L is not only supplied from the main second fluid supply port 9d and discharged from the main second fluid discharge port 9c. The fluid can be supplied from two sub-second fluid supply ports 14a and discharged from two sub-second fluid discharge ports 14b. Since the heat exchange ability between the refrigerant R and the coolant L differs depending on the position where the

partition plates

13 and 15 are provided, the coolant L discharged from the main second fluid discharge port 9c and the coolant discharged from the sub second fluid discharge port 14b. The temperature is different between L and L. Therefore, although it is a single plate heat exchanger 1, it is possible to connect many pipes, and the pipes and flow paths can be further simplified.

In addition, in this plate type heat exchanger 1, the refrigerant R and the coolant L can be supplied and discharged from the second end plate 9, and the coolant L can be supplied and discharged from each

partition plate

13 and 15. It is easy to simplify the piping and flow paths around the exchanger 1 and utilize heating and cooling using the refrigerant R and the coolant L.

FIG. 9 shows a heat pump device 30 for a mobile body using a plate heat exchanger 10 similar to the plate heat exchanger 1 of the embodiment and a plate heat exchanger 20 that does not use the

partition plates

13 and 15. It is a front view.

In this mobile heat pump device 30, the plate heat exchanger 10 is used as an evaporator, the plate heat exchanger 20 is used as a condenser, and the plate heat exchanger 10 and the plate heat exchanger 20 are provided with An electric compressor 25 is provided.

The electric compressor 25 is provided with a compression mechanism 25b and an electric motor 25c within a housing 25a. The plate heat exchanger 10 is integrally fastened to the electric motor 25c side of the housing 25a with bolts 11. The second end plate 9 of the plate heat exchanger 10 constitutes a housing of the mobile heat pump device 30. Further, the plate heat exchanger 20 is integrally fastened to the compression mechanism 25b side of the housing 25a with bolts 11. The second end plate 9 of the plate heat exchanger 20 constitutes a housing of the mobile heat pump device 30.

In this mobile heat pump device 30, the plate heat exchanger 10 of the embodiment, another plate heat exchanger 20, and an electric compressor 25 are easily integrated. In particular, since the second end plate 9 constitutes a housing, it has high integrity. The piping and flow paths of the mobile heat pump device 30 are simplified. For this reason, this heat pump device 30 for a moving body exhibits excellent mountability on a moving body such as a vehicle.

Although the present invention has been described above based on examples, it goes without saying that the present invention is not limited to the above-mentioned examples, and can be applied with appropriate changes without departing from the spirit thereof.

That is, in the

plate heat exchangers

1, 10, and 20 of the above embodiments, in the heat exchange plate 3, the first opening 3b and the second opening 3c are provided through the short side, and the third opening 3d and the fourth opening 3c are provided through the heat exchange plate 3. Although the opening 3e was also provided through the short side, the arrangement order of the first to fourth openings 3b to 3e is not limited to this.

For example, even in a similar rectangular shape, the first opening and the second opening may be provided through the long sides, and the third opening and the fourth opening may also be provided through the long sides. In this case, the spacer axis O2 of the spacer 5 may be parallel to the long side.

Further, in the

plate heat exchangers

1, 10, and 20 of the above embodiments, the heat exchange plate 3 does not require inversion or rotation, but it may extend parallel to the long side or short side, or be provided perpendicularly from the center. It is also possible to set a heat exchange shaft that can be rotated around the heat exchange shaft, and to stack them by inverting or rotating them around the heat exchange shaft. Furthermore, in the plate heat exchangers 1 and 10 of the above embodiments, the spacer 5 is inverted around the spacer axis O2, but the spacer 5 can also be rotated by 180° around the axis that is perpendicular to the spacer 5 and extends in the depth direction of the paper. good.

In the

plate heat exchangers

1, 10, and 20 of the above embodiments, seal layers 5S were provided on both sides of the spacer 5, but seal layers were provided on both sides of the spacer without the seal layer 5S and on both sides of the metal gasket body. Alternatively, a gasket may be prepared and provided between the spacer and the heat exchange plate 3.

Further, in the

plate heat exchangers

1, 10, and 20 of the above embodiments, the sub-second fluid supply port 14a and the sub-second fluid discharge port 14b were formed, but the sub-first fluid supply port and the sub-first fluid discharge port were formed. An outlet may also be formed. In this case, the auxiliary first fluid supply port can supply the refrigerant R to the first fluid path F1, and the auxiliary first fluid discharge port can discharge the refrigerant R from the first fluid path F1.
Further, in the above embodiment, the

partition plates

13 and 15 are provided with the sub second fluid supply port 14a and the sub second fluid discharge port 14b, but the sub first fluid supply port, the sub first fluid discharge port, and the sub second fluid discharge port are At least one of the second fluid supply port 14a and the sub-second fluid discharge port 14b may be provided.
Further, in the above embodiment, the second end plate 9 is provided with a main first fluid supply port 9b, a main first fluid discharge port 9e, a main second fluid supply port 9d, and a main second fluid discharge port 9c. At least one of the main first fluid supply port 9b, the main first fluid discharge port 9e, the main second fluid supply port 9d, and the main second fluid discharge port 9c may be provided.
Further, in the above embodiment, the second end plate 9 is provided with a main first fluid supply port 9b, a main first fluid discharge port 9e, a main second fluid supply port 9d, and a main second fluid discharge port 9c. It may be provided on the first end plate 7 instead of the second end plate 9.

The present invention can be used for air conditioning, system heating and cooling devices, etc. in moving bodies such as electric vehicles.

1, 10 Plate heat exchanger 3 Heat exchange plate 3a Uneven part (heat exchange area)
3b first opening 3c second opening 3d third opening 3e fourth opening 5 spacer 5a frame

5b communication port

5d, 5e

insertion port

5m, 5n wall 7 first end plate 9 second end plate 9b main first fluid supply Port 9c Main second fluid outlet 9d Main second fluid supply port 9e Main first fluid outlet 11 Bolt (fastening member)
13, 15 Partition plate 14a Sub-second fluid supply port 14b Sub-second fluid discharge port 25 Electric compressor 25a Housing 25b Compression mechanism 25c Electric motor F1 First fluid path F2 Second fluid path L Coolant (second fluid)
R Refrigerant (first fluid)

Claims

a plurality of heat exchange plates each having a plate shape, each having a divided heat exchange area, and each having a first opening, a second opening, a third opening, and a fourth opening extending through the heat exchange area;
a first fluid path that has a plate shape with the heat exchange plate sandwiched therebetween, and allows a first fluid to flow through the heat exchange area through two of the first to fourth openings and the heat exchange area; Two openings other than the opening constituting the first fluid path among the first to fourth openings and the heat exchange area cause the heat exchanger to flow through the second fluid path through which the second fluid flows through the heat exchange area. multiple spacers formed on the replacement plate;
a first end plate and a second end plate that sandwich the heat exchange plate and the spacer;
A plurality of fastening members that stack and fasten the heat exchange plate, the spacer, the first end plate, and the second end plate,
A plate heat exchanger that exchanges heat between the first fluid in the first fluid path and the second fluid in the second fluid path,
The first end plate or the second end plate includes a main first fluid supply port that can supply the first fluid to the first fluid path, and a main fluid supply port that can discharge the first fluid from the first fluid path. a first fluid discharge port, a main second fluid supply port capable of supplying the second fluid to the second fluid path, and a main second fluid discharge port capable of discharging the second fluid from the second fluid path; At least one of the following is provided,
A sub-first fluid supply port capable of supplying the first fluid to the first fluid path, a sub-first fluid discharge port capable of discharging the first fluid from the first fluid path, between the pair of spacers; At least one of a sub-second fluid supply port capable of supplying the second fluid to the second fluid path and a sub-second fluid discharge port capable of discharging the second fluid from the second fluid path is provided. A plate heat exchanger further comprising a partition plate.
The plate heat exchanger according to claim 1, wherein a plurality of said partition plates are provided.
The first end plate or the second end plate is provided with the main first fluid supply port, the main first fluid discharge port, the main second fluid supply port, and the main second fluid discharge port,
The plate heat exchanger according to claim 1 or 2, wherein the partition plate is provided with the sub second fluid supply port and the sub second fluid discharge port.
The spacer includes a frame portion, a communication port formed in the frame portion, a wall portion formed to narrow the communication port from the frame portion, and an insertion port provided through the wall portion. death,
The wall part may communicate the second opening and the third opening with the heat exchange area while keeping the first opening and the fourth opening out of communication with the heat exchange area, or the second opening and the third opening may communicate with the heat exchange area. communicating the first opening and the fourth opening with the heat exchange area while keeping the third opening out of communication with the heat exchange area;
The insertion port is
If the wall portion does not communicate the first opening and the fourth opening with the heat exchange area, the first opening on one side communicates with the first opening on the other side, and the fourth opening on one side communicates with the first opening on the other side. communicating the opening with the fourth opening on the other side;
If the wall portion does not communicate the second opening and the third opening with the heat exchange area, the second opening on one side communicates with the second opening on the other side, and the third opening on one side communicates with the second opening on the other side. The plate heat exchanger according to any one of claims 1 to 3, wherein the opening communicates with the third opening on the other side.
A movement characterized in that the plate heat exchanger according to any one of claims 1 to 4 and an electric compressor in which a compression mechanism and an electric motor are provided in a housing are fastened by the fastening member. Body heat pump device.
The heat pump device for a mobile body according to claim 5, wherein at least one of the first end plate and the second end plate constitutes the housing.