JP2020143859A - Heat exchanger - Google Patents

Abstract

To provide a heat exchanger in which the flexibility of the design of a flow direction of a heat transfer medium can be improved.SOLUTION: In a heat exchanger 4, communicative holes H12, H22 of respective plate members 41, 42 constitute an end tank portion T11 by communicating with each other. Communicative holes H14, H24 of the respective plate members 41, 42 constitute an end tank portion T22 by communicating with each other. Communicative holes H16, H26 of the respective plate members 41, 42 constitute a center tank portion T31 by communicating with each other. When a lamination direction denotes a direction in which the plate members 41, 42 are laminated, the center tank portion T31 is provided in such a way that the center tank portion T31 partially overlaps the end tank portions T11, T22 in the lamination direction, and is communicated with the end tank portion T11.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to heat exchangers.

Conventionally, there is a heat exchanger described in Patent Document 1 below. The heat exchanger described in Patent Document 1 includes a plurality of plate members arranged in a laminated manner. Each plate member is formed with a heat medium flow path through which a heat medium flows or a cooling water flow path through which cooling water flows. The heat medium plate member having the heat medium flow path and the cooling water plate member having the cooling water flow path are arranged alternately.

At the left end of the laminated structure of the plurality of plate members, a first heat medium tank portion is formed which communicates with the left end of the heat medium flow path of each plate member. The tank portion for the first heat medium is divided into an upper tank portion for the first heat medium and a lower tank portion for the first heat medium by a partition wall formed in the middle of the tank portion. At the right end of the laminated structure of the plurality of plate members, a second heat medium tank portion is formed which communicates with the right end of the heat medium flow path of each plate member.

Of the plurality of plate members, the uppermost plate member arranged at the uppermost stage is provided with a heat medium inflow port for flowing the heat medium into the upper tank portion for the first heat medium. Among the plurality of plate members, the lowermost plate member arranged at the bottom is provided with a heat medium discharge port for discharging the heat medium collected in the lower tank portion for the first heat medium.

In the heat exchanger described in Patent Document 1, the heat medium that has flowed into the upper tank portion for the first heat medium from the inflow port for the heat medium is arranged above the center of the plurality of plate members for the heat medium. Flows through the heat medium plate member, the second heat medium tank portion, the heat medium plate member arranged below the center of the plurality of heat medium plate members, and the lower tank portion for the first heat medium. , Is discharged from the heat medium outlet. In this way, in this heat exchanger, the heat medium flows in the tank portion for the second heat medium so as to turn in the opposite direction. Further, in the heat exchanger described in Patent Document 1, the flow paths through which the cooling water flows are formed to have substantially the same structure as the flow paths through which the heat medium flows, except that the flow directions are opposite to each other. In this heat exchanger, heat exchange is performed between the heat medium flowing through the heat medium flow path and the cooling water flowing through the cooling water flow path.

Japanese Unexamined Patent Publication No. 2015-59669

By the way, as in the heat exchanger described in Patent Document 1, if a partition wall is provided in the middle of the tank portion for the first heat medium, the heat medium can be flowed so as to turn in the opposite direction. However, in the case of such a structure, the heat medium inflow port is formed so as to protrude from either the uppermost plate member or the lowermost plate member, and the heat medium discharge port is formed on one of the other. become. That is, protrusions are formed on each of the uppermost plate member and the lowermost plate member. This is a factor that deteriorates the mountability of the heat exchanger.

When trying to change the flow of the heat medium only by a simple structure such as providing a partition wall in the middle of the tank portion for the first heat medium like the heat exchanger described in Patent Document 1, the uppermost plate member and the most It is difficult to realize a complicated flow method of the heat medium so that both the heat medium inlet and the heat medium outlet can be arranged on either one of the lower plate members. As a result, in the heat exchanger described in Patent Document 1, deterioration of its mountability is unavoidable.

In recent heat exchangers, it is required to be able to realize a more complicated flow of heat medium according to the purpose of use.
The present disclosure has been made in view of these circumstances, and an object of the present disclosure is to provide a heat exchanger capable of improving the degree of freedom in designing the flow of a heat medium.

In the heat exchanger that solves the above problems, the plate member (41) for the first fluid in which the first flow path (W30) through which the first fluid flows is formed inside, and the second flow path (W31) through which the second fluid flows. ) Are alternately laminated and arranged with the second fluid plate member (42) formed inside, and heat is generated between the first fluid flowing through the first flow path and the second fluid flowing through the second flow path. The exchange will take place. At one end of the first fluid plate member, a first communication hole (H12, H13) communicating with one end of the first flow path and a second communication hole (H12, H13) provided independently of the first communication hole ( H14, H15) and the third communication hole (H16, H17), which are provided independently of the first communication hole and the second communication hole and are arranged between the first communication hole and the second communication hole, It is formed. At one end of the second fluid plate member, there are four communication holes (H24, H25) that communicate with one end of the second flow path, and a fifth communication hole (H24, H25) that is provided independently of the fourth communication hole. H22, H23) and the sixth communication hole (H26, H27), which is provided independently of the fourth communication hole and the fifth communication hole and is arranged between the fourth communication hole and the fifth communication hole, It is formed. The first communication hole and the fifth communication hole form a first tank portion (T11, T12) through which the first fluid flows by communicating with each other. The second communication hole and the fourth communication hole form a second tank portion (T21, T22) through which the second fluid flows by communicating with each other. The third communication hole and the sixth communication hole form the third tank portion (T31, T32) by communicating with each other. When the direction in which the plate member for the first fluid and the plate member for the second fluid are laminated and arranged is the stacking direction, the third tank portion is partially the first tank portion and the second tank portion in the stacking direction. It is provided so as to overlap with the tank portion, and is communicated with one of the tank portions of the first tank portion and the second tank portion.

According to this configuration, the first fluid flowing through the first tank portion or the second fluid flowing through the second tank portion flows through the third tank portion. By using this third tank portion as an arbitrary flow path according to the purpose of use, as compared with a conventional heat exchanger having only the first tank portion and the second tank portion, the first fluid or the second fluid can be compared. It is possible to realize a complicated flow. Therefore, the degree of freedom in designing the flow method of the first fluid or the second fluid can be improved.

The reference numerals in parentheses described in the above means and claims are examples showing the correspondence with the specific means described in the embodiments described later.

According to the present disclosure, it is possible to provide a heat exchanger capable of improving the degree of freedom in designing how the heat medium flows.

FIG. 1 is a block diagram showing a schematic configuration of a heat pump cycle and a cooling water circulation circuit. FIG. 2 is a front view showing the front structure of the heat exchanger of the first embodiment. FIG. 3 is a perspective view showing an exploded perspective structure of the first plate member of the first embodiment. FIG. 4 is a perspective view showing an exploded perspective structure of the second plate member of the first embodiment. FIG. 5 is a diagram schematically showing a cross-sectional structure taken along the line VV of FIG. FIG. 6 is a diagram schematically showing a cross-sectional structure along the VI-VI line of FIG. FIG. 7 is a perspective view showing an exploded perspective structure of the second plate member of the first embodiment. FIG. 8 is a perspective view showing an exploded perspective structure of the first plate member of the first embodiment. FIG. 9 is a perspective view showing an exploded perspective structure of the second plate member of the first embodiment. FIG. 10 is a perspective view showing an exploded perspective structure of the first plate member of the first embodiment. FIG. 11 is a perspective view showing an exploded perspective structure of the second plate member of the first embodiment. FIG. 12 is a perspective view showing an exploded perspective structure of the first plate member of the first embodiment. FIG. 13 is a diagram schematically showing the flow of the heat medium in the heat exchanger of the first embodiment. FIG. 14 is a diagram schematically showing the flow of cooling water in the heat exchanger of the first embodiment. FIG. 15 is a front view schematically showing the front structure of the heat exchanger of the second embodiment. FIG. 16 is a diagram schematically showing a cross-sectional structure along the XVI-XVI line of FIG. FIG. 17 is a diagram schematically showing a cross-sectional structure along the line XVII-XVII of FIG. FIG. 18 is a diagram schematically showing the flow of cooling water in the heat exchanger of the second embodiment. FIG. 19 is a diagram schematically showing the front structure of the heat exchanger of the third embodiment. FIG. 20 is a cross-sectional view schematically showing a cross-sectional structure taken along the line XX-XX of FIG. FIG. 21 is a cross-sectional view schematically showing a cross-sectional structure along the line XXI-XXI of FIG. FIG. 22 is a cross-sectional view schematically showing a cross-sectional structure along the line XXII-XXII of FIG. FIG. 23 is a diagram schematically showing the flow of cooling water in the heat exchanger of the third embodiment. FIG. 24 is a diagram schematically showing the front structure of the heat exchanger of the fourth embodiment. FIG. 25 is a cross-sectional view showing a cross-sectional structure taken along the line XXV-XXV of FIG. 24. FIG. 26 is a cross-sectional view showing a cross-sectional structure along the XXVI-XXVI line of FIG. 24. FIG. 27 is a diagram schematically showing the flow of cooling water in the heat exchanger of the fourth embodiment. FIG. 28 is a plan view showing the planar structure of the first plate piece of the first plate member of the fifth embodiment. FIG. 29 is a plan view showing the planar structure of the second plate piece of the first plate member of the fifth embodiment. FIG. 30 is a plan view showing a planar structure of the first plate member of the fifth embodiment. FIG. 31 is a plan view showing the planar structure of the second plate member of the fifth embodiment. FIG. 32 is a plan view showing the planar structure of the plate member of the sixth embodiment. FIG. 33 is a plan view showing the planar structure of the first plate member of the seventh embodiment. FIG. 34 is a cross-sectional view schematically showing the cross-sectional structure of the heat exchanger of the eighth embodiment. FIG. 35 is a cross-sectional view schematically showing a cross-sectional structure of the heat exchanger of the eighth embodiment.

Hereinafter, an embodiment of the heat exchanger will be described with reference to the drawings. In order to facilitate understanding of the description, the same components are designated by the same reference numerals as much as possible in each drawing, and duplicate description is omitted.
<First Embodiment>
First, a first embodiment of the heat exchanger will be described. The heat exchanger of this embodiment is used as a water-cooled condenser 11 for performing heat exchange between the heat pump cycle 1 and the cooling water circulation circuit 2 shown in FIG. The heat pump cycle 1 and the cooling water circulation circuit 2 shown in FIG. 1 are mounted on the vehicle. First, the outline of the heat pump cycle 1 and the cooling water circulation circuit 2 will be described.

The heat pump cycle 1 includes a compressor 10, a water cooling condenser 11, an internal heat exchange unit 12, expansion units 13 and 14, and evaporation units 15 and 16. In the heat pump cycle 1, these elements are connected in an annular shape via a pipe, and a heat medium circulates through each element. In this embodiment, the heat medium corresponds to the first fluid.

The compressor 10 compresses and discharges the heat medium circulating in the heat pump cycle 1. The high-temperature and high-pressure heat medium compressed in the compressor 10 flows to the water-cooled condenser 11.
In the water-cooled condenser 11, the high-temperature and high-pressure heat medium discharged from the compressor 10 and the cooling water circulating in the cooling water circulation circuit 2 exchange heat, and the cooling water absorbs the heat of the heat medium to generate heat. The medium is condensed. The heat medium condensed in the water-cooled condenser 11 flows to the internal heat exchange section 12. The water-cooled condenser 11 corresponds to the condensing portion.

In the internal heat exchange unit 12, the heat medium discharged from the water-cooled condenser 11 and the heat medium discharged from the evaporation units 15 and 16 exchange heat. The temperature of the heat medium discharged from the evaporation units 15 and 16 is lower than the temperature of the heat medium discharged from the water-cooled condenser 11. Therefore, in the internal heat exchange unit 12, the heat medium discharged from the water-cooled condenser 11 is supercooled by exchanging heat with the heat medium discharged from the evaporation units 15 and 16. In the internal heat exchange section 12, the first flow path W11 in which the expansion section 13 and the evaporation section 15 are provided and the second flow path W12 in which the expansion section 14 and the evaporation section 16 are provided are connected in parallel. Therefore, the heat medium supercooled in the internal heat exchange unit 12 flows into the first flow path W11 or the second flow path W12.

In the first flow path W11, the heat medium supercooled in the internal heat exchange section 12 is decompressed by the expansion section 13 and then flows into the evaporation section 15. Cooling water that circulates in the battery cooling circuit 3 flows through the evaporation unit 15.
The battery cooling circuit 3 includes a battery cooler 30 and a pump 31. In the battery cooling circuit 3, the battery cooler 30, the pump 31, and the evaporation unit 15 are connected in an annular shape via pipes. In the battery cooler 30, heat exchange is performed between the cooling water flowing inside the battery cooler 30 and the battery mounted on the vehicle, so that the heat of the battery is absorbed by the cooling water and the battery is cooled. The battery cooler 30 discharges cooling water whose temperature has risen by absorbing the heat of the battery to the pump 31. The pump 31 circulates the cooling water to the battery cooler 30 and the evaporation unit 15 of the battery cooling circuit 3.

In the evaporation unit 15, heat exchange is performed between the heat medium decompressed by the expansion unit 13 and the cooling water whose temperature has risen in the battery cooler 30, so that the heat medium absorbs the heat of the cooling water. , The heat medium evaporates. As a result, the cooling water circulating in the battery cooling circuit 3 is cooled. The heat medium evaporated in the evaporation unit 15 passes through the internal heat exchange unit 12 and then is sucked into the compressor 10.

In the second flow path W12, the heat medium supercooled in the internal heat exchange section 12 is decompressed by the expansion section 14 and then flows into the evaporation section 16. The evaporation unit 16 is arranged in the air conditioning duct of the air conditioner mounted on the vehicle. The conditioned air introduced into the passenger compartment is flowing in the conditioned duct. In the evaporation unit 16, heat exchange is performed between the heat medium flowing inside the heat medium and the conditioned air flowing in the air conditioning duct, so that the heat medium absorbs the heat of the conditioned air and the heat medium evaporates. As a result, the conditioned air is cooled, and the cooled conditioned air flows into the vehicle interior through the air conditioning duct, so that the vehicle interior can be cooled. The heat medium evaporated in the evaporation unit 16 passes through the internal heat exchange unit 12 and then is sucked into the compressor 10.

The cooling water circulation circuit 2 includes a first flow path W21 in which the heater 20 is provided and a second flow path W22 in which the radiator 21 is provided. The first flow path W21 and the second flow path W22 are connected in parallel with the water cooling condenser 11.
In addition to the heater 20, the on-off valve 22 and the pump 23 are provided in the first flow path W21. The on-off valve 22 opens and closes the first flow path W21. The pump 23 circulates cooling water between the water cooling condenser 11 and the heater 20. The heater 20 is arranged in the air conditioning duct. In the heater 20, heat exchange is performed between the cooling water flowing inside the heater 20 and the conditioned air flowing in the air conditioning duct, so that the conditioned air absorbs the heat of the cooling water and the conditioned air is heated. By introducing the heated conditioned air into the vehicle interior through the air conditioning duct, the vehicle interior can be heated.

In addition to the radiator 21, an on-off valve 24 and a pump 25 are provided in the second flow path W22. The on-off valve 24 opens and closes the second flow path W22. The pump 25 circulates cooling water between the water cooling condenser 11 and the radiator 21. The radiator 21 is arranged at the grill opening of the vehicle. In the radiator 21, heat exchange is performed between the cooling water flowing inside the radiator 21 and the outside air introduced from the grill opening, so that the heat of the cooling water is released to the outside air and the cooling water is cooled.

In the heat pump cycle 1 and the cooling water circulation circuit 2, the on-off valve 22 is set to the open state and the on-off valve 24 is set to the closed state when heating the conditioned air, in other words, when heating the vehicle interior. As a result, the temperature of the cooling water rises due to the cooling water absorbing the heat of the heat medium in the water cooling condenser 11, and the cooling water having the increased temperature flows through the heater 20, so that the air conditioning air is heated.

Further, in the heat pump cycle 1 and the cooling water circulation circuit 2, the on-off valve 22 is set to the closed state and the on-off valve 24 is set to the open state when cooling the conditioned air, in other words, when cooling the vehicle interior. .. As a result, the temperature of the cooling water rises as the cooling water absorbs the heat of the heat medium in the water cooling condenser 11, and the cooled water with the increased temperature flows to the radiator 21, so that the cooling water is cooled by the outside air. .. Further, the heat medium cooled by the water-cooled condenser 11 circulates in the heat pump cycle 1, so that the air-conditioned air can be cooled in the evaporation unit 16 and the battery can be cooled by the battery cooler 30 through the evaporation unit 15. Become.

In this embodiment, the heat exchanger 4 shown in FIG. 2 is used as the water-cooled condenser 11 shown in FIG. Next, the specific structure of the heat exchanger 4 will be described.
As shown in FIG. 2, the heat exchanger 4 has a structure in which the first plate member 41 and the second plate member 42 are alternately laminated. The first plate member 41 has a flow path through which the heat medium flows. The second plate member 42 has a flow path through which the cooling water flows. In the present embodiment, the first plate member 41 corresponds to the first fluid plate member, and the second plate member 42 corresponds to the second fluid plate member. Hereinafter, for convenience, the direction in which the plate members 41 and 42 are laminated is referred to as the "Z-axis direction". Further, one of the Z-axis directions is referred to as "Z1 direction", and the other direction is referred to as "Z2 direction".

As shown in FIG. 3, the first plate member 41 is composed of two plate pieces 410a and 410b that are joined to each other. The first plate member 41 has a substantially rectangular cross-sectional shape orthogonal to the Z-axis direction, and is formed flat so that the thickness in the Z-axis direction becomes thin. Similarly, as shown in FIG. 4, the second plate member 42 is also composed of two plate pieces 420a and 420b joined to each other and is formed in a flat rectangular shape. In the following, for convenience, of the two axial directions orthogonal to the Z-axis direction, the direction corresponding to the longitudinal direction of the plate members 41 and 42 is referred to as the "X-axis direction", and is defined as the lateral direction of the plate members 41 and 42. The corresponding direction is referred to as "Y-axis direction". Further, one of the X-axis directions is referred to as "X1 direction", and the other direction is referred to as "X2 direction".

As shown in FIG. 3, the plate pieces 410a and 410b constituting the first plate member 41 are formed with recesses 411a and 411b having a substantially rectangular cross-sectional shape orthogonal to the Z-axis direction, respectively. The recess 411a is formed so as to project in the Z1 direction in the first plate piece 410a. The recess 411b is formed so as to project in the Z2 direction in the second plate piece 410b. In the first plate member 41, an internal flow path W30 through which a heat medium flows is formed by a space surrounded by recesses 411a and 411b of the plate pieces 410a and 410b, respectively. In this embodiment, the internal flow path W30 corresponds to the first flow path.

Recesses 412a and 413a are formed at the two diagonal corners of the first plate piece 410a, respectively. Recesses 414a and 415a are formed at the two diagonal corners of the first plate piece 410a, respectively. A recess 416a is formed in a portion of the first plate piece 410a located between the recess 412a and the recess 414a. A recess 417a is formed in a portion of the first plate piece 410a located between the recess 413a and the recess 415a.

Similarly, the second plate piece 410b is also formed with recesses 412b to 417b.
In the first plate member 41, the communication portion 412 is formed by the space surrounded by the recess 412a of the first plate piece 410a and the recess 412b of the second plate piece 410b. Similarly, the communication portions 413 to 417 are formed by the space surrounded by the recesses 413a to 417a of the first plate piece 410a and the recesses 413b to 417b of the second plate piece 410b.

The communication portion 414 and the communication portion 415 are spaces having a circular cross-sectional shape orthogonal to the Z-axis direction. On the other hand, the communication portions 421, 413, 416, 417 are spaces having an elongated cross-sectional shape orthogonal to the Z-axis direction. The communication portion 412 is communicated with one of the diagonal corners of the internal flow path W30. The communication portion 413 communicates with the other corner of the diagonal of the internal flow path W30. The first plate member 41 is formed with communication holes H12 to H17 that penetrate each of the communication portions 421 to 417 in the Z-axis direction.

In the present embodiment, the communication holes H12 and H13 correspond to the first communication holes that communicate with one end of the internal flow path W30. Further, the communication holes H14 and H15 correspond to the second communication holes provided independently of the first communication holes. Further, the communication holes H16 and H17 correspond to the third communication holes provided independently of the first communication hole and the second communication hole and arranged between the first communication hole and the second communication hole.

As shown in FIG. 4, the plate pieces 420a and 420b constituting the second plate member 42 also have substantially the same structure as the plate pieces 410a and 410b of the first plate member 41. That is, recesses 421a to 427a are formed in the first plate piece 420a. Further, recesses 421b to 427b are formed in the second plate piece 420b. In the second plate member 42, an internal flow path W31 through which cooling water flows is formed by a space surrounded by a recess 421a of the first plate piece 420a and a recess 421b of the second plate piece 420b. Further, the communication portion 422-427 is configured by the space surrounded by the recesses 422a to 427a of the first plate piece 420a and the recesses 422b to 427b of the second plate piece 420b.

The communication portion 422 and the communication portion 423 are spaces having a circular cross-sectional shape orthogonal to the Z-axis direction. On the other hand, the communication portions 424 to 427 are spaces having an elongated cross-sectional shape orthogonal to the Z-axis direction. The communication portion 424 is communicated with one of the diagonal corners of the internal flow path W30. Further, the communication portion 425 is communicated with the other corner of the diagonal of the internal flow path W30. The first plate member 41 is formed with communication holes H12 to H27 that penetrate each of the communication portions 422 to 427 in the Z-axis direction.

In the present embodiment, the communication holes H24 and H25 correspond to the fourth communication holes that communicate with one end of the internal flow path W31. Further, the communication holes H22 and H23 correspond to the fifth communication hole provided independently of the fourth communication hole. Further, the communication holes H26 and H27 are provided independently of the 4th communication hole and the 5th communication hole, and correspond to the 6th communication hole arranged between the 4th communication hole and the 5th communication hole.

FIG. 5 schematically shows a cross-sectional structure along the VV line of FIG. As shown in FIG. 5, in the heat exchanger 4, the communication portions 421 and 422 of the plate members 41 and 42 communicate with each other through the communication holes H12 and H22 of the plate members 41 and 42, whereby the end tank Part T11 is configured. The end tank portion T11 is divided into a first tank space T11a and a second tank space T11b by partition walls 43a to 43c provided in the middle thereof. Further, the end tank portion T22 is formed by communicating the communication portions 414 and 424 of the plate members 41 and 42 with each other through the communication holes H14 and H24 of the plate members 41 and 42. Further, the communication portions 416 and 426 of the plate members 41 and 42 communicate with each other through the communication holes H16 and H26 of the plate members 41 and 42, thereby forming the central tank portion T31. When viewed from the Z-axis direction, the communication portion 416 of the first plate member 41 is arranged so as to overlap the communication portion 424 of the adjacent second plate member 42. Further, when viewed from the Z-axis direction, the communication portion 426 of the second plate member 42 is arranged so as to overlap the communication portion 412 of the adjacent first plate member 41.

FIG. 6 schematically shows a cross-sectional structure along the VI-VI line of FIG. As shown in FIG. 6, in the heat exchanger 4, the communication portions 413 and 423 of the plate members 41 and 42 communicate with each other through the communication holes H13 and H23 of the plate members 41 and 42, whereby the end tank Part T12 is configured. Further, the end tank portion T21 is formed by communicating the communication portions 415 and 425 of the plate members 41 and 42 with each other through the communication holes H15 and H25 of the plate members 41 and 42. The end tank portion T21 is divided into a first tank space T21a and a second tank space T21b by partition walls 44a to 44c provided in the middle thereof. Further, the communication portions 417 and 427 of the plate members 41 and 42 communicate with each other through the communication holes H17 and H27 of the plate members 41 and 42, thereby forming the central tank portion T32. When viewed from the Z-axis direction, the communication portion 417 of the first plate member 41 is arranged so as to overlap the communication portion 425 of the adjacent second plate member 42. Further, when viewed from the Z-axis direction, the communication portion 427 of the second plate member 42 is arranged so as to overlap the communication portion 413 of the adjacent first plate member 41.

In the present embodiment, the end tank portions T11 and T12 correspond to the first tank portion. Further, the end tank portions T21 and T22 correspond to the second tank portion. Further, the central tank portions T31 and T32 correspond to the third tank portion.
In FIGS. 5 and 6, among the plurality of first plate members 41 and second plate members 42, the first plate members 41 arranged at the ends on the Z2 direction side are indicated by reference numerals 41a to 41c and are on the Z2 direction side. The second plate member 42 arranged at the end of the is indicated by reference numerals 42a to 42c. In the following, for convenience, the first plate member 41 excluding the first plate members 41a to 41c is represented by reference numeral 41d, and the second plate member 42 excluding the second plate members 42a to 42c is represented by reference numeral 42d.

As shown in FIG. 5, the communication portions 412 of the first plate members 41b and 41c are communicated with the communication portions 426 of the second plate members 42b and 42c through the communication holes H32a and H32b. Further, as shown in FIG. 6, the communication portions 417 of the first plate members 41a to 41c are communicated to the communication portions 425 of the second plate members 42b and 42c through the communication holes H31a and H31b. ..

Specifically, the first plate members 41a to 41c and the second plate members 42a to 42c have a structure as shown in FIGS. 7 to 12.
As shown in FIG. 7, the second plate member 42a differs from the second plate member 42 shown in FIG. 4 in that the communication hole H25 is closed in the recess 425b of the second plate piece 420b. The bottom wall portion of the recess 425b constitutes a partition wall 44a.

As shown in FIG. 8, in the first plate member 41a, the communication hole H15 is closed in the recesses 415a and 415b of the plate pieces 410a and 410b, respectively, and the communication hole H15 in the recess 412b of the second plate piece 410b. It differs from the first plate member 41 shown in FIG. 3 in that H12 is closed. The bottom wall portions of the recesses 415a and 415b form partition walls 44b and 44c, respectively. Further, the bottom wall portion of the recess 412b constitutes a partition wall 43a. Further, a communication hole H31a is formed in the recess 417b of the second plate piece 410b.

As shown in FIG. 9, in the second plate member 42b, the communication hole H22 is closed in the recesses 422a and 422b of the plate pieces 420a and 420b, respectively, and the communication hole H25 is closed in the first plate piece 420a. This is different from the second plate member 42 shown in FIG. The bottom wall portions of the recesses 422a and 422b form partition walls 43b and 43c. Further, the communication portion 425 is provided with a communication hole H31b. The communication hole H31b is communicated with the communication hole H31a of the first plate member 41a shown in FIG. Through these communication holes H31a and H31b, the communication portion 425 of the second plate member 42b and the communication portion 417 of the first plate member 41a are communicated with each other. Further, a communication hole H32b is formed in the recess 426b of the second plate piece 420b.

As shown in FIG. 10, in the first plate member 41b, the communication hole H12 is closed in the recess 412a of the first plate piece 410a, and the communication hole H17 is closed in the recess 417b of the second plate piece 410b. This is different from the first plate member 41 shown in FIG. Further, a communication hole H32a is formed in the communication portion 412. The communication hole H32a communicates with the communication hole H32b of the second plate member 42b shown in FIG. Through these communication holes H32a and H32b, the communication portion 412 of the first plate member 41b and the communication portion 426 of the second plate member 42b are communicated with each other. Further, a communication hole H31a is formed in the communication portion 417. The communication hole H31a is communicated with the communication hole H31b of the communication portion 425 of the second plate member 42b shown in FIG. Through these communication holes H31a and H31b, the communication portion 417 of the first plate member 41b and the communication portion 425 of the second plate member 42b are communicated with each other.

As shown in FIG. 11, in the second plate member 42c, the communication hole H24 of the recess 424b of the second plate piece 420b is closed, and the communication hole H26 of the recess 426b of the second plate piece 420b is closed. It differs from the second plate member 42 shown in FIG. 4 in that the communication hole H25 of the recess 425b of the second plate piece 420b is closed. Further, in the second plate member 42c, the communication hole H27 of the communication portion 427 is closed. A communication hole H32b is formed in the communication portion 426. The communication hole H32b is communicated with the communication hole H32a of the communication portion 412 of the first plate member 41b shown in FIG. Through these communication holes H32a and H32b, the communication portion 426 of the second plate member 42c and the communication portion 412 of the first plate member 41b are communicated with each other. Further, as shown in FIG. 11, in the second plate member 42c, a communication hole H31b is formed in the recess 425a of the first plate piece 420a. The communication hole H31b communicates with the communication hole H31a of the communication portion 417 of the first plate member 41b shown in FIG. Through these communication holes H31a and H31b, the communication portion 425 of the second plate member 42c and the communication portion 417 of the first plate member 41b are communicated with each other.

As shown in FIG. 12, the first plate member 41c is different from the first plate member 41 shown in FIG. 3 in that the communication holes H14 to H17 of the communication portions 414 to 417 are closed. Further, in the first plate member 41c, the communication hole H12 of the recess 412b of the second plate piece 410b and the communication hole H13 of the recess 413b of the second plate piece 410b are closed. Further, a communication hole H32a is formed in the recess 412a of the first plate piece 410a. The communication hole H32a is communicated with the communication hole H32b of the communication portion 426 of the second plate member 42c shown in FIG. Through these communication holes H32a and H32b, the communication portion 412 of the first plate member 41c and the communication portion 426 of the second plate member 42c are communicated with each other.

By using the first plate members 41a to 41c and the second plate members 42a to 42c as shown in FIGS. 7 to 12, the structure of the heat exchanger 4 as shown in FIGS. 5 and 6 is realized. .. That is, the internal space of the end tank portion T11 is divided into the first tank space T11a and the second tank space T11b by the partition walls 43a to 43c formed on the first plate member 41a and the second plate member 42b. Further, the second tank space T11b of the end tank portion T11 and the central tank portion T31 are communicated with each other through the communication holes H32a and H32b formed in the first plate members 41b and 41c and the second plate members 42b and 42c. .. Further, the internal space of the end tank portion T21 is divided into the first tank space T21a and the second tank space T21b by the partition walls 44a to 44c formed on the first plate member 41a and the second plate member 42a. Further, the second tank space T21b of the end tank portion T21 and the central tank portion T32 are communicated with each other through the communication holes H31a and H31b formed in the first plate members 41b and 41c and the second plate members 42b and 42c. There is. In the present embodiment, the communication holes H31a, H31b, H32a, and H32b correspond to the seventh communication hole.

As shown in FIGS. 5 and 6, the communication holes H13 and H14 are closed in the first plate member 41d arranged at the most end in the Z1 direction. As a result, the end portion of the end tank portion T12 in the Z1 direction and the end portion of the end tank portion T22 in the Z-axis direction are closed.
Further, as shown in FIG. 5, a heat medium inflow port 45a is provided at a position corresponding to the end tank portion T11 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A heat medium discharge port 45b is provided at a position corresponding to the central tank portion T31 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. As shown in FIG. 6, a cooling water inflow port 46a is provided at a position corresponding to the end tank portion T21 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A cooling water discharge port 46b is provided at a position corresponding to the central tank portion T32 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction.

Next, an operation example of the heat exchanger 4 of the present embodiment will be described.
As shown by arrows in FIG. 13, in the heat exchanger 4, the heat medium flows from the heat medium inflow port 45a into the first tank space T11a of the end tank portion T11. The heat medium that has flowed into the first tank space T11a of the end tank portion T11 is distributed to the internal flow path W30 from the communication portion 412 of the first plate members 41a and 41d shown in FIG. In the first plate members 41a and 41d, the heat medium flows from the communication portion 412 toward the communication portion 413. The heat medium that has flowed to the communication portion 413 in the first plate members 41a and 41d is collected in the end tank portion T12 shown in FIG. 6, and then in the end tank portion T12 as shown by an arrow in FIG. It flows inside in the Z2 direction.

The heat medium that has flowed in the Z2 direction inside the end tank portion T12 is distributed from the communication portions 413 of the first plate members 41b and 41c to the internal flow path W30. In the first plate members 41b and 41c, the heat medium flows from the communication portion 413 toward the communication portion 412. The heat medium that has flowed to the communication portion 412 in the first plate members 41b and 41c is collected in the second tank space T11b of the end tank portion T11 shown in FIG. The heat medium collected in the second tank space T11b of the end tank portion T11 flows into the end portion of the central tank portion T31 in the Z2 direction through the communication holes H32a and H32b as shown by arrows in FIG. As shown by an arrow in FIG. 13, the heat medium flowing into the central tank portion T31 is discharged from the end portion in the Z1 direction through the heat medium discharge port 45b.

On the other hand, as shown by an arrow in FIG. 14, in the heat exchanger 4, the cooling water flows from the cooling water inflow port 46a into the first tank space T21a of the end tank portion T21. The cooling water that has flowed into the first tank space T21a of the end tank portion T21 is distributed from the communication portion 425 of the second plate members 42a and 42d shown in FIG. 6 to the internal flow path W31. In the second plate members 42a and 42d, cooling water flows from the communication portion 425 toward the communication portion 424. The cooling water that has flowed to the communication portion 424 in the second plate members 42a and 42d is collected in the end tank portion T22 shown in FIG. 5, and then in the end tank portion T22 as shown by an arrow in FIG. It flows inside in the Z2 direction.

The cooling water that has flowed in the Z2 direction inside the end tank portion T22 is distributed from the communication portion 424 of the second plate members 42b and 42c to the internal flow path W31. In the second plate members 42b and 42c, cooling water flows from the communication portion 424 toward the communication portion 425. The cooling water that has flowed to the communication portion 425 in the second plate members 42b and 42c is collected in the second tank space T21b of the end tank portion T21 shown in FIG. The cooling water collected in the second tank space T21b of the end tank portion T21 flows into the end portion of the central tank portion T32 in the Z2 direction through the communication holes H31a and H31b as shown by arrows in FIG. The cooling water that has flowed into the central tank portion T32 is discharged from the end portion in the Z1 direction through the cooling water discharge port 46b, as shown by an arrow in FIG.

In the heat exchanger 4 having such a structure, the heat medium flows as shown by the arrow in FIG. 13, and the cooling water flows as shown by the arrow in FIG. In the heat exchanger 4, heat exchange is performed between the heat medium flowing through the internal flow path W30 of the first plate member 41 and the cooling water flowing through the internal flow path W31 of the second plate member 42, whereby the heat medium is generated. Is condensed.
In the heat exchanger 4 of the present embodiment, it is possible to appropriately change the flow methods of the refrigerant and the cooling water. For example, as the flow method of the cooling water, a flow method may be adopted in which the cooling water flows in from the cooling water discharge port 46b and the cooling water is discharged from the cooling water inlet 46a.

According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in the following (1) to (3) can be obtained.
(1) As shown in FIG. 5, the central tank portion T31 is arranged so as to partially overlap the end tank portion T11 and the end tank portion T22 in the Z-axis direction, and is arranged on the end tank portion T11. It is communicated. Further, as shown in FIG. 6, the central tank portion T32 is arranged so as to partially overlap the end tank portion T12 and the end tank portion T21 in the Z-axis direction, and communicates with the end tank portion T21. Has been done. Further, the heat medium flowing through the end tank portion T11 flows through the central tank portion T31, and the cooling water flowing through the end tank portion T21 flows through the central tank portion T32. As a result, it is possible to realize a flow of the heat medium and the cooling water such that the heat medium and the cooling water are discharged from the ends where the inflow ports 45a and 46a are provided in the heat exchanger 4. That is, as compared with the conventional heat exchanger, a more complicated flow of the heat medium and the cooling water can be realized, so that the degree of freedom in designing the flow method of the heat medium and the cooling water can be improved. As a result, all of the heat medium inflow port 45a, the heat medium discharge port 45b, the cooling water inflow port 46a, and the cooling water discharge port 46b are arranged on one side surface of the heat exchanger 4 in the Z1 direction. Therefore, the mountability of the heat exchanger 4 can be improved.

(2) As shown in FIG. 5, the central tank portion T31 communicates with the end tank portion T11 by the communication holes H32a and H32b formed in the first plate members 41b and 41c and the second plate members 42b and 42c. Has been done. Further, as shown in FIG. 6, the central tank portion T32 communicates with the end tank portion T21 by the communication holes H31a and H31b formed in the first plate members 41b and 41c and the second plate members 42b and 42c. Has been done. According to such a configuration, the central tank portion T31 can be easily communicated with the end tank portion T11, and the central tank portion T32 can be easily communicated with the end tank portion T21.

(3) The end tank portion T11 is provided with partition walls 43a to 43c for partitioning the internal space into the first tank space T11a and the second tank space T11b. Further, the end tank portion T21 is provided with partition walls 44a to 44c for partitioning the internal space into the first tank space T21a and the second tank space T21b. According to such a configuration, as shown in FIGS. 5 and 6, it is possible to realize a flow in which the heat medium and the cooling water are turned back and flowed at the end portion of the heat exchanger 4 in the Z2 direction. ..

<Second Embodiment>
Next, a second embodiment of the heat exchanger 4 will be described. Hereinafter, the differences from the heat exchanger 4 of the first embodiment will be mainly described.
The heat exchanger 4 of the present embodiment shown in FIG. 15 has a structure integrally including an internal heat exchange unit 12, an expansion unit 13, and an evaporation unit 15 shown in FIG.

FIG. 16 schematically shows a cross-sectional structure along the XVI-XVI line of FIG. As shown in FIG. 16, in the heat exchanger 4 of the present embodiment, partition walls are formed between the communication portion 414 of the first plate member 41 and the communication portion 424 of the second plate member 42 arranged in the middle of the end tank portion T22. 45 is provided. The partition wall 45 divides the internal space of the end tank portion T22 into a first tank space T22a and a second tank space T22b.

FIG. 17 schematically shows a cross-sectional structure along the line XVII-XVII of FIG. As shown in FIG. 17, in the heat exchanger 4 of the present embodiment, a partition wall is formed between the communication portion 413 of the first plate member 41 and the communication portion 423 of the second plate member 42 arranged in the middle of the end tank portion T12. 46 is provided. The partition wall 46 divides the internal space of the end tank portion T12 into a first tank space T12a and a second tank space T12b.

In the following, for convenience, among the plurality of first plate members 41, the first plate member 41 located in the Z1 direction with respect to the partition walls 43 to 46 is represented by reference numeral 41e, and the first plate member 41 located in the Z2 direction with respect to the partition walls 43 to 46. The plate member 41 is represented by reference numeral 41f. Similarly, among the plurality of second plate members 42, the second plate member 42 located in the Z1 direction with respect to the partition walls 43 to 46 is represented by reference numeral 42e, and the second plate member located in the Z2 direction with respect to the partition walls 43 to 46. 42 is represented by reference numeral 42f.

In the present embodiment, the first plate member 41e corresponds to the first plate member for the first fluid, and the first plate member 41f corresponds to the second plate member for the first fluid. Further, the second plate member 42e corresponds to the first plate member for the second fluid, and the second plate member 42f corresponds to the second plate member for the second fluid.

As shown in FIG. 16, the communication portion 416 of the first plate member 41e and the communication portion 424 of the second plate member 42e are communicated with each other through the communication hole H33. As a result, the first tank space T22a of the end tank portion T22 is communicated with the central tank portion T31 through the communication hole H33.

A heat medium inflow port 45a is provided at a position corresponding to the end tank portion T11 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A cooling water discharge port 46b is provided at a position corresponding to the end tank portion T22 on one side surface of the laminated body of the plate members 41 and 42 in the Z2 direction.

As shown in FIG. 17, the first plate member 41 and the second plate member 42 of the present embodiment have the first embodiment in that the communication holes H31a and H31b are not formed in the communication portions 415 and 425. It is different from each plate member 41, 42 of. However, the communication portion 413 of the first plate member 41f and the communication portion 427 of the second plate member 42f of the present embodiment are communicated with each other through the communication hole H34. As a result, the second tank space T12b of the end tank portion T12 is communicated with the central tank portion T32 through the communication hole H34.

An expansion portion 13 is provided at a position corresponding to the end tank portion T12 and the central tank portion T32 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A cooling water inflow port 46a is provided at a position corresponding to the end tank portion T21 on one side surface of the laminated body of the plate members 41 and 42 in the Z2 direction.

Next, the operation and effect of the heat exchanger 4 of the present embodiment will be described.
As shown in FIG. 15, in the heat exchanger 4, the heat medium discharged from the water cooling condenser 11 flows into the first tank space T11a of the end tank portion T11 through the heat medium inflow port 45a. The heat medium that has flowed into the first tank space T11a of the end tank portion T11 is distributed from the communication portion 412 of the first plate member 41e shown in FIG. 16 to the internal flow path W30. In the first plate member 41e, the heat medium flows from the communication portion 412 toward the communication portion 413. As shown in FIG. 17, the heat medium that has flowed to the communication portion 413 in the first plate member 41e is collected in the first tank space T12a of the end tank portion T12 and then flows in the Z1 direction. ..

The heat medium that has flowed in the Z1 direction inside the first tank space T12a of the end tank portion T12 is depressurized by flowing into the expansion portion 13. The heat medium decompressed through the expansion portion 13 flows into the central tank portion T32 and flows through the central tank portion T32 in the Z2 direction. The heat medium flowing through the central tank portion T32 flows into the second tank space T12b of the end tank portion T12 through the communication hole H34. The heat medium that has flowed into the second tank space T12b of the end tank portion T12 is distributed from the communication portion 413 of the first plate member 41f to the internal flow path W30 thereof. In the first plate member 41f, the heat medium flows from the communication portion 413 toward the communication portion 412.

As shown in FIG. 16, the heat medium that has flowed to the communication portion 412 in the first plate member 41f is collected in the second tank space T11b of the end tank portion T11, and then passes through the communication hole H32 through the central tank portion T31. It flows in the Z1 direction. The heat medium flowing through the central tank portion T32 flows into the first tank space T22a of the end tank portion T22 through the communication hole H33. The heat medium that has flowed into the first tank space T22a of the end tank portion T22 is distributed from the communication portion 424 of the second plate member 42e to the internal flow path W31 thereof. In the second plate member 42e, the heat medium flows from the communication portion 424 toward the communication portion 425.

As shown in FIG. 17, the heat medium that has flowed to the communication portion 425 in the second plate member 42e is collected in the first tank space T21a of the end tank portion T21 and then discharged from the heat medium discharge port 45b. To.
On the other hand, as shown in FIG. 18, in the heat exchanger 4, the cooling water flowing through the battery cooling circuit 3 flows into the second tank space T21b of the end tank portion T21 through the cooling water inflow port 46a. As shown in FIG. 17, the cooling water that has flowed into the second tank space T21b of the end tank portion T21 is distributed from the communication portion 425 of the second plate member 42f to the internal flow path W31. In the second plate member 42f, cooling water flows from the communication portion 425 toward the communication portion 424. As shown in FIG. 16, the cooling water that has flowed to the communication portion 424 in the second plate member 42f is collected in the second tank space T22b of the end tank portion T22 and then discharged from the cooling water discharge port 46b. To.

As described above, in the heat exchanger 4 of the present embodiment, the end tank portion T21 is partitioned into the first tank space T21a and the second tank space T21b by the partition wall 44, and the first tank space T21a and the second tank thereof are separated. Different fluids are flowing in the space T21b.
In the heat exchanger 4 having such a structure, the heat medium flows as shown by the arrow in FIG. 15, and the cooling water flows as shown by the arrow in FIG. In the heat exchanger 4, heat exchange is performed between the heat medium flowing through the first plate member 41e and the heat medium flowing through the second plate member 42e. Therefore, the first plate member 41e and the second plate member 42e constitute the internal heat exchange portion 12.

Further, in the heat exchanger 4, heat exchange is performed between the heat medium flowing through the first plate member 41f and the cooling water flowing through the second plate member 42f. Therefore, the first plate member 41f and the second plate member 42f form the evaporation unit 15.
According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in (4) below can be obtained.

(4) Since the heat exchanger 4 integrally includes the internal heat exchange section 12, the expansion section 13, and the evaporation section 15, the structure of the heat pump cycle 1 is improved as compared with the case where they are provided separately. It can be simplified.
<Third Embodiment>
Next, a third embodiment of the heat exchanger 4 will be described. Hereinafter, the differences from the heat exchanger 4 of the first embodiment will be mainly described. In the heat exchanger 4 of the present embodiment, the X1 direction corresponds to the upper part in the vertical direction, and the X2 direction corresponds to the lower part in the vertical direction.

The heat exchanger 4 of the present embodiment shown in FIG. 19 is used as the water-cooled condenser 11 shown in FIG. The heat exchanger 4 of the present embodiment is different from the heat exchanger 4 of the first embodiment in that it has a liquid storage unit 17 and a supercooling unit 18.
FIG. 20 schematically shows a cross-sectional structure taken along the line XX-XX of FIG. As shown in FIG. 20, in the heat exchanger 4 of the present embodiment, partition walls are formed between the communication portion 414 of the first plate member 41 and the communication portion 424 of the second plate member 42 arranged in the middle of the end tank portion T22. 45 and 47 are provided. The internal space of the end tank portion T22 is divided into a first tank space T22a, a second tank space T22b, and a third tank space T22c by these partition walls 45 and 47.

In the following, for convenience, among the plurality of first plate members 41, the first plate member 41 arranged in the Z1 direction with respect to the partition wall 45 is represented by the reference numeral “41 g”. Further, the first plate member 41 arranged in the Z2 direction with respect to the partition wall 47 is represented by the reference numeral "41i". Further, the first plate member 41 arranged between the partition wall 45 and the partition wall 47 is represented by the reference numeral "41h". Similarly, the plurality of second plate members 42 are also represented by the reference numerals “42g to 42i”.

The communication portion 416 of the first plate member 41g and the communication portion 424 of the second plate member 42g are communicated with each other through the communication hole H33. As a result, the first tank space T22a of the end tank portion T22 is communicated with the central tank portion T31. Further, the communication portion 416 of the first plate member 41i and the communication portion 424 of the second plate member 42i are communicated with each other through the communication hole H35. As a result, the third tank space T22c of the end tank portion T22 is also communicated with the central tank portion T31.

A heat medium inflow port 45a is provided at a position facing the end tank portion T11 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A cooling water inflow port 46a is provided at a position corresponding to the central tank portion T31 on one side surface of the laminated body of the plate members 41 and 42 in the Z2 direction.

FIG. 21 shows a cross-sectional structure along the XXI-XXI line of FIG. As shown in FIG. 21, partition walls 46 and 48 are provided in the communication portion 413 of the first plate member 41 and the communication portion 423 of the second plate member 42 arranged in the middle of the end tank portion T12. .. The internal space of the end tank portion T12 is divided into a first tank space T12a, a second tank space T12b, and a third tank space T12c by these partition walls 46 and 48.

The communication portion 417 of the first plate member 41g and the communication portion 425 of the second plate member 42g are communicated with each other through the communication hole H36. As a result, the first tank space T21a of the end tank portion T21 is communicated with the central tank portion T32. Further, the communication portion 417 of the first plate member 41i and the communication portion 425 of the second plate member 42 are communicated with each other through the communication hole H37. As a result, the third tank space T21c of the end tank portion T21 is also communicated with the central tank portion T32.

A cooling water discharge port 46b is provided at a position facing the central tank portion T32 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A heat medium discharge port 45b is provided at a position corresponding to the end tank portion T12 on one side surface of the laminated body of the plate members 41 and 42 in the Z2 direction.

FIG. 22 shows a cross-sectional structure along the line XXII-XXII of FIG. As shown in FIG. 22, a communication hole H38 is formed at the center of each of the first plate member 41h and the second plate member 42h in the X-axis direction. The internal flow path W30 of the first plate member 41h and the internal flow path W31 of the second plate member 42h are communicated with each other by the communication hole H38. In the present embodiment, the liquid storage unit 17 is configured by the internal flow path W30 of the first plate member 41h and the internal flow path W31 of the second plate member 42h that are communicated with each other through the communication hole H38. The liquid storage unit 17 is used as a portion for temporarily storing the heat medium and separating the heat medium of the liquid phase and the heat medium of the gas phase.

In the present embodiment, the first plate member 41g corresponds to the first plate member for the first fluid, the first plate member 41i corresponds to the second plate member for the first fluid, and the first plate member 41h is the first. 1 Corresponds to the third plate member for fluid. Further, the second plate member 42g corresponds to the first plate member for the second fluid, the second plate member 42i corresponds to the second plate member for the second fluid, and the second plate member 42h corresponds to the third plate member for the second fluid. Corresponds to a plate member.

Next, an operation example of the heat exchanger 4 of the present embodiment will be described. In the following, among the plurality of first plate members 41g, the first plate member 41g arranged in the Z1 direction with respect to the partition wall 43 is referred to as "the upper half of the first plate member 41g", and is referred to as "the upper half of the first plate member 41g" in the Z2 direction with respect to the partition wall 43. The first plate member 41g arranged in the above is referred to as "the lower half of the first plate member 41g".

As shown in FIG. 19, in the heat exchanger 4, the heat medium flows into the first tank space T11a of the end tank portion T11 through the heat medium inflow port 45a. As shown in FIG. 20, the heat medium that has flowed into the first tank space T11a of the end tank portion T11 is distributed from the communication portion 412 in the upper half of the first plate member 41g to the internal flow path W30. In the upper half of the first plate member 41g, a heat medium flows from the communication portion 412 toward the communication portion 413. As shown in FIG. 21, the heat medium that has flowed to the communication portion 413 in the upper half of the first plate member 41g is collected in the first tank space T12a of the end tank portion T12, and then the inside thereof is moved in the Z2 direction. It flows toward.

The heat medium flowing through the first tank space T12a of the end tank portion T12 in the Z2 direction is distributed from the communication portion 413 of the lower half of the first plate member 41g to the internal flow path W30. In the lower half of the first plate member 41g, a heat medium flows from the communication portion 413 toward the communication portion 412. As shown in FIG. 20, the heat medium that has flowed to the communication portion 412 in the lower half of the first plate member 41g is collected in the second tank space T11b of the end tank portion T11, and then the inside thereof is moved in the Z2 direction. It flows toward.

When the heat medium flows through the second tank space T11b of the end tank portion T11 in the Z2 direction, the heat medium is temporarily stored in the liquid storage portion 17, and then the second tank space T11b of the end tank portion T11. It flows to the end in the Z2 direction. The heat medium that has flowed to the end of the second tank space T11b of the end tank portion T11 in the Z2 direction is distributed from the communication portion 412 of the first plate member 41i to the internal space W30. In the first plate member 41i, the heat medium flows from the communication portion 412 toward the communication portion 413. As shown in FIG. 21, the heat medium that has flowed to the communication portion 413 in the first plate member 41i is collected in the third tank space T12c of the end tank portion T12, and then is collected from the heat medium discharge port 45b to the outside. It is discharged.

On the other hand, as shown in FIG. 23, in the heat exchanger 4, the cooling water flows into the central tank portion T31 of the end tank portion T22 through the cooling water inflow port 46a. As shown in FIG. 20, the cooling water that has flowed into the central tank portion T31 flows into the first tank space T22a and the third tank space T22c of the end tank portion T22 through the communication holes H33 and H35. As shown in FIG. 20, the cooling water that has flowed into the first tank space T22a and the third tank space T22c of the end tank portion T22 is introduced from the communication portion 424 of the second plate members 42g and 42i to its internal flow path W31. Will be distributed to. In the second plate members 42g and 42i, cooling water flows from the communication portion 424 toward the communication portion 425. As shown in FIG. 21, the cooling water flowing to the communication portion 425 in the second plate members 42g and 42i is collected in the first tank space T21a and the third tank space T21c of the end tank portion T21 and then communicated. It flows into the central tank portion T32 through the holes H36 and H37. The cooling water that has flowed into the central tank portion T32 flows in the Z1 direction and is discharged from the cooling water discharge port 46b.

In the heat exchanger 4 having such a structure, the heat medium flows as shown by the arrow in FIG. 19, and the cooling water flows as shown by the arrow in FIG. 23. In the heat exchanger 4, heat exchange is performed between the heat medium flowing through the first plate member 41 g and the cooling water flowing through the second plate member 42 g. Therefore, 41 g of the first plate member and 42 g of the second plate member constitute the water-cooled condenser 11.

The heat medium that has passed through the first plate member 41 g is in a state in which the liquid phase heat medium and the gas phase heat medium are mixed. In the heat exchanger 4, the liquid phase heat medium and the gas phase heat medium that have passed through the first plate member 41 g flow into the liquid storage unit 17 formed in the first plate member 41h and the second plate member 42h. Is temporarily stored. As a result, in the liquid storage unit 17, the heat medium of the liquid phase and the heat medium of the gas phase are separated.

The liquid phase heat medium stored in the liquid storage unit 17 flows into the first plate member 41i. In the heat exchanger 4, the heat medium in the liquid phase is further cooled by heat exchange between the heat medium flowing through the first plate member 41i and the cooling water flowing through the second plate member 42i. Therefore, the first plate member 41i and the second plate member 42i form the supercooling unit 18.

According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in (5) below can be obtained.
(5) Since the heat exchanger 4 integrally includes the water cooling condenser 11, the liquid storage unit 17, and the supercooling unit 18, the structure of the heat pump cycle 1 is improved as compared with the case where they are separately provided. It can be simplified.

<Fourth Embodiment>
Next, a fourth embodiment of the heat exchanger 4 will be described. Hereinafter, the differences from the heat exchanger 4 of the first embodiment will be mainly described.
The heat exchanger 4 of the present embodiment shown in FIG. 24 has a structure integrally including the water-cooled condenser 11, the internal heat exchange unit 12, the expansion unit 13, and the evaporation unit 15 shown in FIG.

FIG. 25 schematically shows a cross-sectional structure taken along the line XXV-XXV of FIG. 24. As shown in FIG. 25, in the heat exchanger 4 of the present embodiment, partition walls are formed between the communication portion 412 of the first plate member 41 and the communication portion 422 of the second plate member 42 arranged in the middle of the end tank portion T11. 43, 50 are provided. The internal space of the end tank portion T11 is divided into a first tank space T11a, a second tank space T11b, and a third tank space T11c by these partition walls 43 and 50.

The partition walls 45 and 47 are provided in the communication portion 414 of the first plate member 41 and the communication portion 424 of the second plate member 42 arranged in the middle of the end tank portion T22. The internal space of the end tank portion T22 is divided into a first tank space T22a, a second tank space T22b, and a third tank space T22c by these partition walls 45 and 47.

A partition wall 51 is provided in the communication portion 416 of the first plate member 41 and the communication portion 426 of the second plate member 42 arranged in the middle of the central tank portion T31. The central tank portion T31 is divided into a first tank space T31a and a second tank space T31b by the partition wall 51.

In the following, for convenience, among the plurality of first plate members 41, the first plate member 41 arranged in the Z1 direction with respect to the partition wall 43 is represented by the reference numeral “41j”. Further, the first plate member 41 arranged between the partition wall 43 and the partition wall 45 is represented by the reference numeral "41k". Further, the first plate member 41 arranged between the partition wall 45 and the partition walls 47 and 50 is represented by the reference numeral "41 m". Further, the first plate member 41 arranged in the Z2 direction with respect to the partition walls 47 and 50 is represented by the reference numeral "41n".

Further, among the plurality of second plate members 42, the second plate member 42 arranged in the Z1 direction with respect to the partition walls 45 and 50 is represented by the reference numeral “42j”. Further, the second plate member 42 arranged between the partition wall 45 and the partition walls 47 and 50 is represented by the reference numeral "42 m". Further, the second plate member 42 arranged in the Z2 direction with respect to the partition walls 47 and 50 is represented by the reference numeral "42n".

The communication portion 412 of the first plate member 41n and the communication portion 426 of the second plate member 42n are communicated with each other through the communication hole H40. As a result, the third tank space T11c of the end tank portion T11 is communicated with the second tank space T31b of the central tank portion T31.
The communication portion 416 of the first plate members 41j and 41k and the communication portion 424 of the second plate member 42j are communicated with each other through the communication hole H41. As a result, the first tank space T22a of the end tank portion T22 is communicated with the first tank space T31a of the central tank portion T31.

The communication portion 416 of the first plate member 41m and the communication portion 424 of the second plate member 42m are communicated with each other through the communication hole H42. As a result, the second tank space T22b of the end tank portion T22 is communicated with the second tank space T31b of the central tank portion T31.
A heat medium inflow port 45a is provided at a position corresponding to the end tank portion T11 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A first cooling water inflow port 46a is provided at a position corresponding to the end tank portion T22 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. The cooling water circulating in the cooling water circulation circuit 2 shown in FIG. 1 flows into the first cooling water inflow port 46a.

A second cooling water inflow port 47a is provided at a position corresponding to the end tank portion T22 on one side surface of the laminated body of the plate members 41 and 42 in the Z2 direction. The cooling water circulating in the battery cooling circuit 3 shown in FIG. 1 flows into the second cooling water inlet 47a. The temperature of the cooling water flowing into the second cooling water inlet 47a is lower than the temperature of the cooling water flowing into the first cooling water inlet 46a. Therefore, in the following, the cooling water flowing into the second cooling water inlet 47a will be referred to as low temperature cooling water, and the cooling water flowing into the first cooling water inlet 46a will be referred to as high temperature cooling water. In the present embodiment, the high temperature cooling water corresponds to the first cooling water, and the low temperature cooling water corresponds to the second cooling water.

FIG. 26 schematically shows a cross-sectional structure along the XXVI-XXVI line of FIG. 24. As shown in FIG. 26, partition walls 46 and 48 are provided in the communication portion 413 of the first plate member 41 and the communication portion 423 of the second plate member 42 arranged in the middle of the end tank portion T12. The internal space of the end tank portion T12 is divided into a first tank space T12a, a second tank space T12b, and a third tank space T12c by these partition walls 46 and 48.

Partitions 44 and 49 are provided in the communication portion 415 of the first plate member 41 and the communication portion 425 of the second plate member 42 arranged in the middle of the end tank portion T21. The internal space of the end tank portion T21 is divided into a first tank space T21a, a second tank space T21b, and a third tank space T21c by these partition walls 44 and 49.

A partition wall 52 is provided in the communication portion 417 of the first plate member 41 and the communication portion 427 of the second plate member 42 arranged in the middle of the central tank portion T32. The internal space of the central tank portion T32 is divided into a first tank space T32a and a second tank space T32b by the partition wall 52.

In the following, among the plurality of first plate members 41 m, those arranged in the Z1 direction with respect to the partition wall 52 are referred to as "upper half of the first plate member 41 m" and are arranged in the Z2 direction with respect to the partition wall 52. The thing is referred to as "the lower half of the first plate member 41 m". Further, among the plurality of second plate members 42m, those arranged in the Z1 direction from the partition wall 52 are referred to as "upper half of the second plate member 42m", and those arranged in the Z2 direction from the partition wall 52 are referred to as " It is referred to as "the lower half of the second plate member 42 m".

The lower half communication portion 413 of the first plate member 41m and the lower half communication portion 427 of the second plate member 42m are communicated with each other through the communication hole H43. As a result, the second tank space T12b of the end tank portion T12 is communicated with the second tank space T32b of the central tank portion T32.

The upper half communication portion 417 of the first plate member 41m and the upper half communication portion 425 of the second plate member 42m are communicated with each other through the communication hole H44. As a result, the second tank space T21b of the end tank portion T21 is communicated with the first tank space T32a of the central tank portion T32.

A first cooling water discharge port 46b is provided at a position corresponding to the end tank portion T21 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A heat medium discharge port 45b is provided at a position corresponding to the central tank portion T32 on one side surface of the laminated body of the plate members 41 and 42 in the Z1 direction. A second cooling water discharge port 47b is provided at a position corresponding to the end tank portion T21 on one side surface of the laminated body of the plate members 41 and 42 in the Z2 direction. An expansion portion 13 is provided at a position corresponding to the end tank portion T12 and the central tank portion T32 on one side surface of the laminated body of the plate members 41 and 42 in the Z2 direction.

In the present embodiment, the first plate members 41j and 41k correspond to the first plate member for the first fluid, the first plate member 41m corresponds to the second plate member for the first fluid, and the first plate member 41n. Corresponds to the third plate member for the first fluid. Further, the second plate member 42j corresponds to the first plate member for the second fluid, the second plate member 42m corresponds to the second plate member for the second fluid, and the second plate member 42n corresponds to the third plate member for the second fluid. Corresponds to a plate member.

Next, an operation example of the heat exchanger 4 of the present embodiment will be described.
As shown in FIG. 24, in the heat exchanger 4, the heat medium flows into the first tank space T11a of the end tank portion T11 through the heat medium inflow port 45a. As shown in FIG. 25, the heat medium that has flowed into the first tank space T11a of the end tank portion T11 is distributed from the communication portion 412 of the first plate member 41j to the internal flow path W30. In the first plate member 41j, the heat medium flows from the communication portion 412 toward the communication portion 413. As shown in FIG. 26, the heat medium that has flowed to the communication portion 413 in the first plate member 41j is collected in the first tank space T12a of the end tank portion T12 and then flows in the Z2 direction.

The heat medium that has flowed through the first tank space T12a of the end tank portion T12 in the Z2 direction is distributed from the communication portion 413 of the first plate member 41k to the internal flow path W30. In the first plate member 41k, the heat medium flows from the communication portion 413 toward the communication portion 412. As shown in FIG. 25, the heat medium that has flowed to the communication portion 412 in the first plate member 41k is collected in the second tank space T11b of the end tank portion T11 and then flows in the Z2 direction.

The heat medium that has flowed in the second tank space T11b of the end tank portion T11 in the Z2 direction is distributed from the communication portion 412 of the first plate member 41 m to the internal flow path W30. In the first plate member 41m, the heat medium flows from the communication portion 412 toward the communication portion 413. As shown in FIG. 26, the heat medium that has flowed to the communication portion 413 in the first plate member 41 m is collected in the second tank space T12b of the end tank portion T12 and then flows in the Z2 direction. ..

The heat medium that has flowed in the second tank space T12b of the end tank portion T12 in the Z2 direction flows into the second tank space T32b of the central tank portion T32 through the communication hole H43, and then flows in the Z2 direction. A part of the heat medium flowing in the Z2 direction through the second tank space T32b of the central tank part T32 flows into the expansion part 13, and the remaining heat medium flows toward the evaporation part 16 shown in FIG.

The heat medium that has flowed into the expansion portion 13 is decompressed through the expansion portion 13 and then flows into the third tank space T12c of the end tank portion T12, and from the communication portion 413 of the first plate member 41n, its internal flow path. It is distributed to W30. In the first plate member 41n, the heat medium flows from the communication portion 413 toward the communication portion 412. As shown in FIG. 25, the heat medium flowing to the communication portion 412 in the first plate member 41n is collected in the third tank space T11c of the end tank portion T11, and then passed through the communication hole H40 to the central tank portion T31. Flows in the second tank space T31b in the Z1 direction.

The heat medium that has flowed through the second tank space T31b of the central tank portion T31 in the Z1 direction flows into the second tank space T22b of the end tank portion T22 through the communication hole H42. The heat medium that has flowed into the second tank space T22b of the end tank portion T22 flows into the internal flow path W31 from the communication portion 424 of the second plate member 42 m. In the second plate member 42m, the heat medium flows from the communication portion 424 toward the communication portion 425. As shown in FIG. 26, the heat medium that has flowed to the communication portion 425 in the second plate member 42m is collected in the second tank space T21b of the end tank portion T21, and then through the communication hole H44 in the central tank portion T32. It flows into the first tank space T32a. The heat medium that has flowed into the first tank space T32a of the central tank portion T32 flows in the Z1 direction and is discharged from the heat medium discharge port 45b.

On the other hand, as shown in FIG. 27, the high-temperature cooling water flows into the first tank space T22a of the end tank portion T22 through the first cooling water inflow port 46a. As shown in FIG. 25, the high-temperature cooling water that has flowed into the first tank space T22a of the end tank portion T22 is distributed from the communication portion 424 of the second plate member 42j to the internal flow path W31. In the second plate member 42j, high-temperature cooling water flows from the communication portion 424 toward the communication portion 425. As shown in FIG. 26, the high-temperature cooling water that has flowed to the communication portion 425 in the second plate member 42j is collected in the first tank space T21a of the end tank portion T21, and then the first cooling water discharge port 46b. Is discharged from.

Further, as shown in FIG. 27, the low-temperature cooling water flows into the third tank space T22c of the end tank portion T22 through the second cooling water inflow port 47a. As shown in FIG. 25, the low-temperature cooling water that has flowed into the third tank space T22c of the end tank portion T22 is distributed from the communication portion 424 of the second plate member 42j to the internal flow path W31. In the second plate member 42j, low-temperature cooling water flows from the communication portion 424 toward the communication portion 425. As shown in FIG. 26, the low-temperature cooling water that has flowed to the communication portion 425 in the second plate member 42j is collected in the third tank space T21c of the end tank portion T21, and then the second cooling water discharge port 47b. Is discharged from.

In the heat exchanger 4 having such a structure, the heat medium flows as shown by the arrow in FIG. 24, and the high temperature cooling water and the low temperature cooling water flow as shown by the arrow in FIG. 27. In the heat exchanger 4, heat exchange is performed between the heat medium flowing through the first plate members 41j and 41k and the high-temperature cooling water flowing through the second plate member 42j. Therefore, the first plate members 41j and 41j and the second plate member 42j constitute the water cooling condenser 11.

Further, the heat medium that has passed through the first plate members 41j and 41j flows into the first plate member 41m. In the heat exchanger 4, heat exchange is performed between the heat medium flowing through the first plate member 41 m and the heat medium flowing through the second plate member 42 m. Therefore, the first plate member 41 m and the second plate member 42 m form the internal heat exchange portion 12.

Further, in the heat exchanger 4, the heat medium decompressed by passing through the expansion portion 13 flows through the first plate member 41n. Heat exchange is performed between the heat medium flowing through the first plate member 41n and the low-temperature cooling water flowing through the second plate member 42n. Therefore, the first plate member 41n and the second plate member 42n form the evaporation unit 15.

According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in (6) below can be obtained.
(6) Since the heat exchanger 4 integrally includes the water cooling condenser 11, the internal heat exchange unit 12, the expansion unit 13, and the evaporation unit 15, the heat pump cycle is compared with the case where they are separately provided. It is possible to simplify the structure of 1.

<Fifth Embodiment>
Next, a fifth embodiment of the heat exchanger 4 will be described. Hereinafter, the differences from the heat exchanger 4 of the first embodiment will be mainly described.
As shown in FIG. 28, the first plate piece 410a of the first plate member 41 of the present embodiment has a structure in which the communication portions 421 and 413 are arranged so as to face each other in the X-axis direction. Further, in the first plate piece 410a, the communication portions 414 and 415 are also arranged so as to face each other in the X-axis direction.

As shown in FIG. 29, the second plate piece 410b of the first plate member 41 has a shape obtained by reversing the first plate member 41 shown in FIG. 28 with a straight line parallel to the X-axis direction as an axis. ing.
As shown in FIG. 30, the first plate member 41 is joined by brazing or the like after the first plate piece 410a shown in FIG. 28 and the second plate piece 410b shown in FIG. 29 are assembled. Has a brazed structure.

Further, as shown in FIG. 31, the second plate member 42 has a shape in which the first plate member 41 shown in FIG. 30 is inverted with a straight line parallel to the Y-axis direction as an axis.
In addition, in FIGS. 28 to 31, the illustration of the communication hole is omitted.

According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in (7) below can be obtained.
(7) In the heat exchanger 4 of the present embodiment, if a plate piece having the same shape as the first plate piece 410a shown in FIG. 28 is molded, the first plate can be simply changed by changing the arrangement of the plate pieces. Not only the plate pieces 410a and 410b of the member 41 but also the plate pieces 420a and 420b of the second plate member 42 can be realized. That is, if one type of plate piece is molded, the first plate member 41 and the second plate member 42 can be manufactured, so that the plate members 41 and 42 can be easily manufactured.

<Sixth Embodiment>
Next, a sixth embodiment of the heat exchanger 4 will be described. Hereinafter, the differences from the heat exchanger 4 of the first embodiment will be mainly described.
The first plate member 41 of the present embodiment is formed by bending one plate member 60 shown in FIG. 32 along the central axis m1.

Specifically, as shown in FIG. 32, the first plate piece 410a is formed in one region of the plate member 60 partitioned by the central axis m1. A second plate piece 410b is formed in the other region of the plate member 60 partitioned by the axis m1. The plate member 60 has a shape that is line-symmetrical with respect to the axis m1 when viewed from the Z-axis direction, that is, from the stacking direction. A notch 61 is formed in a portion of the plate member 60 on the axis m1.

The first plate member 41 is formed by bending the plate member 60 shown in FIG. 32 so as to face each other along the axis m1 and then joining the first plate piece 410a and the second plate piece 410b by brazing or the like. Manufactured. At that time, since the notch 61 is formed on the axis m1, the plate member 60 can be easily bent along the axis m1.

The second plate member 42 is also formed by a single plate member in the same manner.
According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in (8) below can be obtained.

(8) In the heat exchanger 4 of the present embodiment, since the first plate member 41 can be molded by one plate member 60, the molding of the first plate member 41 becomes easy. Further, the same action and effect can be obtained for the second plate member 42.
<7th Embodiment>
Next, a seventh embodiment of the heat exchanger 4 will be described. Hereinafter, the differences from the heat exchanger 4 of the first embodiment will be mainly described.

As shown in FIG. 33, a notch as the marking M is formed on the outer peripheral portion of the first plate member 41 of the present embodiment. Similarly, marking M is formed on the outer peripheral portion of the second plate member 42. Each of the plate members 41 and 42 shown in FIGS. 3, 4 and 7 to 12 is provided with different markings M.

As the marking M, it is also possible to use a concave portion, a convex portion, or the like instead of the notch.
According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in (9) below can be obtained.

(9) After the production of the heat exchanger 4 is completed, the plate members 41 and 42 are shown in FIGS. 5 and 6 by visually recognizing the markings M of the plate members 41 and 42 from the outside of the heat exchanger 4. It is possible to easily confirm whether or not the layers are arranged so as to be stacked.
<8th Embodiment>
Next, an eighth embodiment of the heat exchanger 4 will be described. Hereinafter, the differences from the heat exchanger 4 of the first embodiment will be mainly described.

As shown in FIG. 34, in the heat exchanger 4 of the present embodiment, the communication holes H32a and H32b for communicating the second tank space T11b of the end tank portion T11 and the central tank portion T31 are not formed. , Different from the heat exchanger 4 of the first embodiment. Further, as shown in FIG. 35, in the heat exchanger 4, communication holes H31a and H31b for communicating the second tank space T21b of the end tank portion T21 and the central tank portion T32 are not formed.

On the other hand, as shown in FIG. 34, a communication member 70 is provided at the end of the heat exchanger 4 in the Z2 direction. The communication member 70 is provided at a position corresponding to the second tank space T11b and the central tank portion T31 of the end tank portion T11 on one side surface in the Z2 direction of the laminated body of the plate members 41 and 42. The communication member 70 communicates the second tank space T11b of the end tank portion T11 with the central tank portion T31.

Further, as shown in FIG. 35, a communication member 71 is further provided at the end portion of the heat exchanger 4 in the Z2 direction. The communicating member 71 is provided at a position corresponding to the second tank space T21b and the central tank portion T32 of the end tank portion T21 on one side surface in the Z2 direction of the laminated body of the plate members 41 and 42. The communication member 71 communicates the second tank space T21b of the end tank portion T21 with the central tank portion T32.

According to the heat exchanger 4 of the present embodiment described above, the actions and effects shown in (10) below can be obtained.
(10) The communication member 70 communicates the second tank space T11b of the end tank portion T11 with the central tank portion T31, and the communication member 71 communicates the second tank space T21b of the end tank portion T21 with the central tank portion T32. Is communicated with. According to such a configuration, it is not necessary to form the communication holes H31a, H31b, H32a, H32b in the heat exchanger 4 as in the first embodiment, so that the structures of the plate members 41 and 42 are simplified. be able to.

<Other embodiments>
The above embodiment can also be implemented in the following embodiments.
-The heat exchanger 4 of each embodiment is not limited to the heat pump cycle 1 and the cooling water circulation circuit 2 of the vehicle, and can be applied to any heat exchange system. Further, depending on the heat exchange system to be applied, it is possible to use any fluid other than the heat medium and the cooling water as the first fluid and the second fluid in which the heat exchange is performed in the heat exchanger 4.

-The present disclosure is not limited to the above specific examples. Specific examples described above with appropriate design changes by those skilled in the art are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the above-mentioned specific examples, and their arrangement, conditions, shape, and the like are not limited to those illustrated, and can be changed as appropriate. The combinations of the elements included in each of the above-mentioned specific examples can be appropriately changed as long as there is no technical contradiction.

H12, H13: Communication hole (first communication hole)
H14, H15: Communication hole (second communication hole)
H16, H17: Communication hole (third communication hole)
H24, H25: Communication hole (4th communication hole)
H22, H23: Communication hole (fifth communication hole)
H26, H27: Communication hole (6th communication hole)
T11, T12: End tank part (first tank part)
T21, T22: End tank part (second tank part)
T31, T32: Central tank section (third tank section)
W30: Internal flow path (first flow path)
W31: Internal flow path (second flow path)
4: Heat exchanger 11: Water-cooled condenser (condensing part)
12: Internal heat exchange unit 13: Expansion unit 15: Evaporation unit 17: Liquid storage unit 18: Supercooling unit 41: First plate member (first fluid plate member)
42: Second plate member (second fluid plate member)
43a to 43c, 44a to 44c: partition wall 45a: heat medium inflow port 46a: cooling water inflow port 45b: heat medium discharge port 46b: cooling water discharge port 41e, 41g, 41j, 41k: first plate member ( 1st plate member for 1st fluid)
41f, 41i, 41m: 1st plate member (2nd plate member for 1st fluid)
41h, 41n: 1st plate member (3rd plate member for 1st fluid)
42e, 42g, 42j: Second plate member (first plate member for second fluid)
42f, 42i, 42m: Second plate member (second plate member for second fluid)
42h, 42n: 2nd plate member (3rd plate member for 2nd fluid)
60: Plate member

Claims (9)

A plate member (41) for a first fluid in which a first flow path (W30) through which a first fluid flows is formed, and a second fluid in which a second flow path (W31) through which a second fluid flows is formed. A heat exchanger in which the plate members (42) are alternately laminated and arranged, and heat exchange is performed between the first fluid flowing through the first flow path and the second fluid flowing through the second flow path. And
At one end of the first fluid plate member,
The first communication holes (H12, H13) communicating with one end of the first flow path and
The second communication holes (H14, H15) provided independently of the first communication hole, and
Third communication holes (H16, H17) provided independently of the first communication hole and the second communication hole and arranged between the first communication hole and the second communication hole are formed. ,
At one end of the second fluid plate member,
The fourth communication holes (H24, H25) communicating with one end of the second flow path and
Fifth communication holes (H22, H23) provided independently of the fourth communication holes, and
Sixth communication holes (H26, H27), which are provided independently of the fourth communication hole and the fifth communication hole and are arranged between the fourth communication hole and the fifth communication hole, are formed. ,
The first communication hole and the fifth communication hole form a first tank portion (T11, T12) through which the first fluid flows by communicating with each other.
The second communication hole and the fourth communication hole form a second tank portion (T21, T22) through which the second fluid flows by communicating with each other.
The third communication hole and the sixth communication hole form a third tank portion (T31, T32) by communicating with each other.
When the direction in which the first fluid plate member and the second fluid plate member are stacked and arranged is defined as the stacking direction.
The third tank portion is provided so as to partially overlap the first tank portion and the second tank portion in the stacking direction, and one of the first tank portion and the second tank portion is used. A heat exchanger that is connected to the unit. The heat exchanger according to claim 1, wherein the third tank portion is communicated with the one tank portion through a communication hole formed in a portion arranged so as to overlap the one tank portion in the stacking direction. .. A partition wall (43a to 43c, 44a to 44c) for partitioning the internal space of one of the tank portions into a plurality of spaces is further provided.
Inflow ports (45a, 46a) into which either the first fluid or the second fluid flows into one side surface of the first fluid plate member and the laminated body of the second fluid plate member. The heat exchanger according to claim 1 or 2, wherein the outlets (45b, 46b) for discharging the same fluid as the inflow port are provided. The heat exchanger according to claim 3, wherein different fluids flow in the plurality of spaces partitioned by the partition wall. Claims 1 to 4 include three or more inlets into which either one of the first fluid and the second fluid flows in, or outlets from which either the first fluid or the second fluid is discharged. The heat exchanger according to any one item. For a plurality of first fluid plate members arranged in a laminated manner,
A first plate member (41e) for a first fluid in which a heat medium flows through the first flow path as the first fluid, and
A second plate member (41f) for the first fluid, which is different from the first plate member for the first fluid, is included.
For a plurality of second fluid plate members arranged in a laminated manner,
The first plate member (42e) for the second fluid, which is arranged corresponding to the first plate member for the first fluid,
A second plate member (42f) for a second fluid, which is arranged corresponding to the second plate member for the first fluid and has the second flow path through which cooling water flows as the second fluid, is included.
A decompressed heat medium flows through the expansion portion (13) after passing through the first plate member for the first fluid in the first flow path of the second plate member for the first fluid.
A heat medium that has passed through the second plate member for the first fluid flows through the second flow path of the first plate member for the second fluid.
The first plate member for the first fluid and the first plate member for the second fluid constitute an internal heat exchange unit (12) that exchanges heat between the heat media flowing therethrough.
Claim 1 in which the second plate member for the first fluid and the second plate member for the second fluid form an evaporation unit (15) that exchanges heat between the heat medium and the cooling water flowing through the members. The heat exchanger according to any one of 5 to 5. For a plurality of first fluid plate members arranged in a laminated manner,
A first plate member (41 g) for a first fluid in which a heat medium flows through the first flow path as the first fluid, and
A second plate member (41i) for the first fluid, which is different from the first plate member for the first fluid,
A first plate member for the first fluid and a third plate member for the first fluid (41h) arranged between the second plate members for the first fluid are included.
For a plurality of second fluid plate members arranged in a laminated manner,
A first plate member (42 g) for a second fluid, which is arranged corresponding to the first plate member for the first fluid and has the second flow path through which cooling water flows as the second fluid.
A second plate member (42i) for a second fluid, which is arranged corresponding to the second plate member for the first fluid and has the second flow path through which cooling water flows as the second fluid.
A third plate member for the second fluid (42h), which is arranged corresponding to the third plate member for the first fluid, is included.
The first flow path of the third plate member for the first fluid and the second flow path of the third plate member for the second fluid are communicated with each other to form the first plate member for the first fluid. A liquid storage unit (17) for temporarily storing the passed heat medium is formed.
The heat medium stored in the liquid storage portion flows through the first flow path of the second plate member for the first fluid, and the heat medium is flowing.
The first plate member for the first fluid and the first plate member for the second fluid constitute a condensing portion (11) that exchanges heat between the heat medium and the cooling water flowing through the members.
The heat stored in the liquid storage unit is stored in the liquid storage portion by exchanging heat between the heat medium and the cooling water flowing through the second plate member for the first fluid and the second plate member for the second fluid. The heat exchanger according to any one of claims 1 to 5, wherein the supercooling unit (18) for supercooling the medium is configured. For a plurality of first fluid plate members arranged in a laminated manner,
A first plate member (41j, 41k) for a first fluid in which a heat medium flows through the first flow path as the first fluid, and
A second plate member (41 m) for the first fluid, which is different from the first plate member for the first fluid,
The first plate member for the first fluid and the third plate member for the first fluid (41n) different from the second plate member for the first fluid are included.
For a plurality of second fluid plate members arranged in a laminated manner,
A first plate member (42j) for a second fluid, which is arranged corresponding to the first plate member for the first fluid and in which the first cooling water flows as the second fluid,
A second plate member for the second fluid (42 m) arranged corresponding to the second plate member for the first fluid, and
A third plate member (42n) for a second fluid, which is arranged corresponding to the third plate member for the first fluid and in which a second cooling water having a temperature lower than that of the first cooling water flows as the second fluid. , Included,
A heat medium that has passed through the first plate member for the first fluid flows through the second plate member for the first fluid.
A heat medium decompressed through the expansion portion (13) flows through the first plate member for the first fluid after passing through the second plate member for the first fluid.
A heat medium that has passed through the third plate member for the first fluid flows through the second plate member for the second fluid.
Condensation that condenses the heat medium by exchanging heat between the heat medium flowing through the first plate member for the first fluid and the first plate member for the second fluid and the first cooling water. Part (11) is composed
The second plate member for the first fluid and the second plate member for the second fluid constitute an internal heat exchange unit (12) that exchanges heat between the heat media flowing therethrough.
Evaporation that evaporates the heat medium by exchanging heat between the heat medium flowing through the third plate member for the first fluid and the third plate member for the second fluid and the second cooling water. The heat exchanger according to any one of claims 1 to 5, wherein the part (15) is configured. The first fluid plate member and the second fluid plate member have a structure in which plate members (60) having a line-symmetrical shape when viewed from the stacking direction are joined to face each other, according to claims 1 to 8. The heat exchanger according to any one item.

Images