heat exchanger

Abstract

The present application provides a heat exchanger which ensures heat exchange efficiency between various refrigerants, circulates cooling water through independent flow paths, and prevents thermal interference when a plurality of heat exchange components are provided.

Description

Technical Field

[0001] This disclosure relates to a heat exchanger device configured to allow heat exchange between different cooling media. Background Technology

[0002] Generally speaking, a heat exchanger is a device that exchanges heat between different heat exchange media by absorbing or dissipating heat. Such heat exchangers are manufactured in various forms depending on their intended use and application, such as condensers and evaporators that use refrigerant as the heat exchange medium, radiators and heater cores that use cooling water as the heat exchange medium, and oil coolers that use oil, which is used in engines, transmissions, etc., as the heat exchange medium.

[0003] In recent years, with the continuous advancement of electric vehicle technology, air conditioning technology utilizing heat exchangers has attracted considerable attention. Specifically, to ensure the efficiency of air conditioning in electric vehicles, energy consumption is reduced through efficient heat exchange between the refrigerant and cooling water.

[0004] Generally speaking, a heat exchanger operates by having cooling water flow through a cooling water plate and refrigerant flow through a refrigerant plate, thereby allowing the refrigerant and cooling water to exchange heat through the cooling water plate and the refrigerant plate.

[0005] To improve cooling performance, this type of heat exchanger uses multiple internal heat exchangers. However, in the complex internal structure of electric vehicles, it is difficult to ensure that a certain section is straight for the application of internal heat exchangers.

[0006] To address this, multiple internal heat exchangers were integrated, but thermal interference between the individual internal heat exchangers led to a decrease in thermal efficiency.

[0007] The matters described above as background art are only used to facilitate understanding of the background of this disclosure and should not be regarded as an admission of prior art known to those skilled in the art. Summary of the Invention

[0008] Technical issues

[0009] The purpose of this disclosure is to provide a heat exchanger device in which heat exchange efficiency between multiple refrigerants is ensured, cooling water circulates in an independent flow path, and thermal interference is prevented when multiple heat exchange units are provided.

[0010] Technical solution

[0011] The heat exchanger apparatus according to this disclosure for achieving the above-mentioned objectives includes: a first heat exchange unit comprising a plurality of first heat exchange plates, wherein refrigerant and cooling water are introduced through different paths and circulate between the first heat exchange plates respectively, such that the refrigerant and cooling water exchange heat; a second heat exchange unit comprising a plurality of second heat exchange plates and configured such that refrigerant mixed after heat exchange in the first heat exchange unit exchanges heat with refrigerant introduced through another path; and a cooling water passage in which cooling water flows, the cooling water passage being connected to the first heat exchange unit and the second heat exchange unit, being connected to the first heat exchange unit to supply cooling water thereto, and being connected to the second heat exchange unit to bypass the second heat exchange unit.

[0012] The first heat exchange unit is provided with a first cooling water channel for introducing cooling water and a second cooling water channel for discharging cooling water that has undergone heat exchange in the first heat exchange unit. The second heat exchange unit is provided with a third cooling water channel that is connected to the first cooling water channel and bypasses the second heat exchange unit.

[0013] The second heat exchange unit is configured such that an isolation wall portion is formed in part of the second heat exchange plate or in each of the second heat exchange plates around the third cooling water channel, such that the second heat exchange plate is divided into an isolation area and a heat exchange area by the isolation wall portion.

[0014] In some of the multiple second heat exchange plates, the isolation wall portion is recessed toward the opposing second heat exchange plate and engages with the opposing second heat exchange plate, thereby forming an airtight structure.

[0015] The second heat exchange unit is constructed such that a second heat exchange plate with an isolation wall portion and a second heat exchange plate without an isolation wall portion are alternately stacked.

[0016] The isolation wall portion includes: a first isolation wall recessed in one of the second heat exchange plates and in contact with the opposing heat exchange plate; a second isolation wall recessed in the opposite direction to the first isolation wall to form a space; and a third isolation wall recessed in the other second heat exchange plate in the same direction as the first isolation wall while facing the second isolation wall, thereby forming a closed space together with the space of the second isolation wall.

[0017] The second heat exchange unit is configured such that a second heat exchange plate having a first isolation wall and a second isolation wall is alternately stacked with a second heat exchange plate having a third isolation wall, and the isolation walls are joined together.

[0018] The first heat exchange unit is provided with a first refrigerant inlet and a second refrigerant inlet that introduce refrigerant through different paths. The second heat exchange unit is provided with a third refrigerant inlet that introduces refrigerant through another path, a first refrigerant outlet for discharging refrigerant introduced through the third refrigerant inlet, and a second refrigerant outlet for discharging refrigerant that has undergone heat exchange in the first heat exchange unit and the second heat exchange unit.

[0019] The second heat exchange unit is configured such that an isolation wall portion is formed around the third cooling water channel in a portion of the second heat exchange plate or in each of the second heat exchange plates, such that the second heat exchange plate is divided into an isolation area and a heat exchange area by the isolation wall portion, the third cooling water channel is disposed in the isolation area, and the third refrigerant inlet, the first refrigerant outlet and the second refrigerant outlet are disposed in the heat exchange area.

[0020] The third refrigerant inlet and the second refrigerant outlet are located on one side of the heat exchange area, while the first refrigerant outlet and the connecting channel connected to the first heat exchange unit are separated and located on the other side of the heat exchange area.

[0021] One of the multiple second heat exchange plates is configured to communicate with the third refrigerant inlet and the first refrigerant outlet, and another of the multiple second heat exchange plates is configured to communicate with the first refrigerant outlet and the connecting channel, with the second heat exchange plates stacked alternately.

[0022] The second heat exchange unit is configured such that the third refrigerant inlet and the third cooling water channel are respectively located near each corner on one side, the first refrigerant outlet and the connecting channel connected to the first heat exchange unit are respectively located near each corner on the other side, and the second refrigerant outlet is located on the other side of the third cooling water channel.

[0023] By forming an isolation wall portion around the third cooling water channel in the second heat exchange plate, the second heat exchange plate is divided into an isolation area with the third cooling water channel and a heat exchange area with a third refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet.

[0024] In the second heat exchange unit, the third refrigerant inlet and the first refrigerant outlet are diagonally spaced apart, and the second refrigerant outlet and the connecting channel are diagonally spaced apart.

[0025] The first heat exchange unit is provided with a first refrigerant inlet for introducing refrigerant, and the second heat exchange unit is provided with a second refrigerant inlet for introducing refrigerant through another path, a third refrigerant inlet for introducing refrigerant through yet another path, a first refrigerant outlet for discharging refrigerant introduced through the third refrigerant inlet, and a second refrigerant outlet for discharging refrigerant that has undergone heat exchange in the first heat exchange unit and the second heat exchange unit.

[0026] The second heat exchange unit is configured such that an isolation wall portion is formed around the third cooling water channel in a portion of the second heat exchange plate or in each of the second heat exchange plates, such that the second heat exchange plate is divided into an isolation area and a heat exchange area by the isolation wall portion, the third cooling water channel is disposed in the isolation area, and the second refrigerant inlet, the third refrigerant inlet, the first refrigerant outlet and the second refrigerant outlet are disposed in the heat exchange area.

[0027] The second refrigerant inlet is configured to match the communication channel in the second heat exchange unit that connects to the first heat exchange unit. The third refrigerant inlet and the second refrigerant outlet are located on one side of the heat exchange area, while the first refrigerant outlet and the second refrigerant inlet are spaced apart and located on the other side.

[0028] One of the multiple second heat exchange plates is configured to communicate with the third refrigerant inlet and the first refrigerant outlet, and another of the multiple second heat exchange plates is configured to communicate with the second refrigerant inlet, the first refrigerant outlet and the connecting channel, and the second heat exchange plates are stacked alternately.

[0029] A plate is provided between the first heat exchange unit and the second heat exchange unit, so that the first heat exchange unit and the second heat exchange unit are connected through the plate.

[0030] A recessed pocket with a predetermined area is formed in the plate, such that the space defined by the recessed pocket is formed on the surface facing the first heat exchange unit or the second heat exchange unit.

[0031] Beneficial effects

[0032] The heat exchanger device constructed according to the above structure ensures efficient heat exchange between various refrigerants, allows cooling water to circulate in an independent flow path, and prevents thermal interference when multiple heat exchange units are provided. Attached Figure Description

[0033] Figure 1 This is a view showing a heat exchanger device according to a first embodiment of the present disclosure.

[0034] Figure 2 This is a view illustrating one embodiment of a second heat exchange unit in a heat exchanger apparatus according to the present disclosure.

[0035] Figure 3 It is based on Figure 1 A cross-sectional view of the second heat exchange unit in the illustrated embodiment.

[0036] Figure 4 This is a view illustrating another embodiment of a second heat exchange unit in a heat exchanger apparatus according to the present disclosure.

[0037] Figure 5 It is based on Figure 1 A cross-sectional view of the second heat exchange unit in the illustrated embodiment.

[0038] Figure 6 This is a view showing a second heat exchange plate in a second heat exchange unit according to a first embodiment of the present disclosure.

[0039] Figure 7 This is a view showing another second heat exchange plate in a second heat exchange unit according to a first embodiment of the present disclosure.

[0040] Figure 8 This is a view showing the fluid flow in the first heat exchange unit and the second heat exchange unit according to a first embodiment of the present disclosure.

[0041] Figure 9 This is a view showing a heat exchanger device according to a second embodiment of the present disclosure.

[0042] Figure 10 This is a view showing a second heat exchange plate in a second heat exchange unit according to a second embodiment of the present disclosure.

[0043] Figure 11 This is a view showing another second heat exchange plate in a second heat exchange unit according to a second embodiment of the present disclosure.

[0044] Figure 12 This is a view showing the fluid flow in the first heat exchange unit and the second heat exchange unit according to a second embodiment of the present disclosure.

[0045] Figure 13 This is a view showing a heat exchanger device according to a third embodiment of the present disclosure.

[0046] Figure 14 This is a view showing a second heat exchange plate in a second heat exchange unit according to a third embodiment of the present disclosure.

[0047] Figure 15 This is a view showing another second heat exchange plate in a second heat exchange unit according to a third embodiment of the present disclosure.

[0048] Figure 16 This is a view showing the fluid flow in the first and second heat exchange units according to a third embodiment of the present disclosure. Detailed Implementation

[0049] In the following description, embodiments disclosed herein will be described in detail with reference to the accompanying drawings; regardless of the reference numerals in the drawings, the same or similar components will be indicated by the same reference numerals and repeated descriptions thereof will be omitted.

[0050] In the following description, the suffixes “module” and “unit” used for components are given or combined only for the convenience of writing the specification, and do not in themselves have a distinguishing meaning or function from each other.

[0051] In describing the embodiments disclosed in this specification, detailed descriptions of related known technologies will be omitted if it is determined that such detailed descriptions may obscure the essence of the embodiments disclosed in this specification. Furthermore, the accompanying drawings are provided only to facilitate a quick understanding of the embodiments disclosed in this specification. The technical concepts disclosed in this specification are not limited by the drawings and should be understood to include all modifications, equivalents, and alternatives contained within the spirit and scope of this disclosure.

[0052] Terms including ordinal numbers such as first and second can be used to describe various components, but the components are not limited by the terms. The terms are only used to distinguish one component from another.

[0053] When a component is said to be "connected to" or "coupled to" another component, it should be understood that the component can be directly connected to or coupled to the other component, but other components may exist in between. On the other hand, when a component is said to be "directly connected to" or "directly coupled to" another component, it should be understood that no other components exist in between.

[0054] Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0055] In this specification, terms such as “comprising” or “having” are intended to specify the presence of features, figures, steps, operations, components, parts or combinations thereof described in the specification, and should be understood as not precluding the possibility of the presence or addition of one or more other features, figures, steps, operations, components, parts or combinations thereof.

[0056] In the following description, a heat exchanger apparatus according to a preferred embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0057] like Figure 1 and Figure 2 As shown, the heat exchanger device according to this disclosure includes: a first heat exchange unit 100, comprising a plurality of first heat exchange plates 110, wherein refrigerant and cooling water are introduced through different paths and circulate between the first heat exchange plates 110 respectively, such that the refrigerant and cooling water exchange heat; a second heat exchange unit 200, comprising a plurality of second heat exchange plates 210, and configured such that the refrigerant mixed after heat exchange in the first heat exchange unit 100 exchanges heat with refrigerant introduced through another path; and a cooling water passage 300 in which cooling water flows, the cooling water passage 300 being connected to the first heat exchange unit 100 and the second heat exchange unit 200, being connected to the first heat exchange unit 100 to provide cooling water thereto, and being connected to the second heat exchange unit 200 to bypass the second heat exchange unit 200.

[0058] The first heat exchange unit 100 and the second heat exchange unit 200 can be configured to be embedded in the housing.

[0059] In the first heat exchange unit 100, because multiple first heat exchange plates 110 are stacked, refrigerant and cooling water flow between the first heat exchange plates 110. Refrigerants at different temperatures can be introduced into the first heat exchange unit 100 through different paths, and the temperatures of the refrigerant and cooling water can be adjusted by heat exchange between the refrigerant and cooling water.

[0060] In the second heat exchange unit 200, because multiple second heat exchange plates 210 are stacked, refrigerant flows between the second heat exchange plates 210. A refrigerant at a different temperature is introduced into the second heat exchange unit 200, and the refrigerant that has undergone heat exchange in the first heat exchange unit 100 is also introduced therein. Thus, in the second heat exchange unit 200, the refrigerant at this different temperature exchanges heat with the refrigerant that has passed through the first heat exchange unit 100, thereby regulating the temperature.

[0061] Meanwhile, the cooling water passage 300 is connected to the first heat exchange unit 100 and the second heat exchange unit 200. In this way, the cooling water passage 300 is configured to pass through the first heat exchange unit 100 and the second heat exchange unit 200, so that the overall structure inside the electric vehicle can be reduced.

[0062] Furthermore, the cooling water passage 300 is connected to allow cooling water to flow through the first heat exchange unit 100. However, in the case of the second heat exchange unit 200, since heat exchange occurs between refrigerants, the cooling water passage 300 is configured to bypass the second heat exchange unit 200, preventing heat exchange between the cooling water and the refrigerant. In this way, the cooling water passage 300 passes through the second heat exchange unit 200 and is separated from the refrigerant that undergoes heat exchange in the second heat exchange unit 200, forming an independent flow path.

[0063] When the present disclosure is described in detail above, the first heat exchange unit 100 may be provided with a first cooling water channel 310 for introducing cooling water and a second cooling water channel 320 for discharging cooling water that has undergone heat exchange in the first heat exchange unit 100. The second heat exchange unit 200 may be provided with a third cooling water channel 330 that communicates with the first cooling water channel 310 and bypasses the second heat exchange unit 200.

[0064] The first cooling water passage 310 and the second cooling water passage 320 provide a path for cooling water to circulate after exchanging heat with the refrigerant in the first heat exchange unit 100, and the third cooling water passage 330 provides a path for cooling water to circulate by bypassing each heat exchange unit without exchanging heat with the refrigerant.

[0065] For example, in the thermal management loop, the first cooling water channel 310 may be configured such that cooling water that has passed through the battery flows therein, and the second cooling water channel 320 may be configured such that cooling water that has undergone heat exchange with the refrigerant in the first heat exchange unit 100 is supplied to the battery side.

[0066] Furthermore, the third cooling water passage 330 can be configured to allow cooling water to flow through the radiator. This third cooling water passage 330 can be configured, depending on the design of the cooling water circuit, as either an inlet through which cooling water is introduced or an outlet through which cooling water is discharged. That is, with the third cooling water passage 330 configured as an inlet, the cooling water introduced through the third cooling water passage 330 can bypass the second heat exchange unit 200 and flow into the first heat exchange unit 100, and then merge with the cooling water introduced through the first cooling water passage 310 to form a liquid flow discharged to the second cooling water passage 320. Alternatively, with the third cooling water passage 330 configured as an outlet, in the second heat exchange unit 200, the third cooling water passage 330 can be connected to the first cooling water passage 310, allowing the cooling water introduced through the first cooling water passage 310 to bypass both the first and second heat exchange units 100 and 200.

[0067] In this way, various thermal management modes based on cooling water temperature control can be executed by controlling the cooling water valve set in the thermal management loop, including heating or cooling the battery.

[0068] Meanwhile, in this disclosure, when constructing the cooling water channel 300 in the second heat exchange unit 200, a structure is configured to prevent heat exchange between the refrigerant and the cooling water.

[0069] That is, in the second heat exchange unit 200, the second heat exchange plate 210 can be divided into an isolation region A and a heat exchange region B by forming an isolation wall portion P around the third cooling water channel 330 in a portion of the second heat exchange plate 210 or in each of the second heat exchange plates 210. In the case of the isolation region A, cooling water flowing in the cooling water channel 300 flows therein, and in the case of the heat exchange region B, refrigerant is introduced therein, so that heat exchange occurs between the refrigerants.

[0070] In this way, an isolation wall portion P is formed in the second heat exchange plate 210 to block the flow of refrigerant circulating between the second heat exchange plates 210, and to allow the cooling water and refrigerant flowing in the third cooling water channel 330 to be separated from each other in the second heat exchange plate 210.

[0071] Such a partition wall portion P can be applied in various implementation forms.

[0072] As one embodiment of the isolation wall portion P, such as Figure 2 and Figure 3As shown, in some of the multiple second heat exchange plates 210, the isolation wall portion P can be recessed toward the opposing second heat exchange plate 210 and engage with the opposing second heat exchange plate 210 to form an airtight structure.

[0073] Here, the second heat exchange unit 200 can be configured such that a second heat exchange plate 210 having an isolation wall portion P and a second heat exchange plate 210 without an isolation wall portion P are alternately stacked.

[0074] In this way, in the isolation wall portion P according to this embodiment, the isolation wall portion P can be alternately formed in a plurality of second heat exchange plates 210, each isolation wall portion P can be recessed toward and extend toward the opposing second heat exchange plate 210 and engage with the facing second heat exchange plate 210 to form an airtight structure.

[0075] Thus, in the second heat exchange unit 200, in each of the second heat exchange plates 210, the cooling water and refrigerant flowing in the cooling water channel 300 are separated, and heat transfer is minimized by the isolation wall portion P, thereby preventing thermal interference between the cooling water and the refrigerant.

[0076] In addition, the airtight structure of the isolation wall section P prevents the leakage of cooling water, thus ensuring the durability of the second heat exchange unit 200.

[0077] Meanwhile, as another embodiment of the isolation wall portion P, such as Figure 4 and Figure 5 As shown, the isolation wall portion P may include: a first isolation wall P1 recessed in one of the second heat exchange plates 210 and in contact with the opposing heat exchange plate; a second isolation wall P2 recessed in the opposite direction to the first isolation wall P1 to form a space; and a third isolation wall P3 recessed in the other second heat exchange plate 210 in the same direction as the first isolation wall P1 and facing the second isolation wall P2, forming a closed space together with the space of the second isolation wall P2.

[0078] Here, the second heat exchange unit 200 can be configured such that a second heat exchange plate 210 having a first isolation wall P1 and a second isolation wall P2 and a second heat exchange plate 210 having a third isolation wall P3 are alternately stacked, and each isolation wall is joined to the other.

[0079] In this way, according to another embodiment, the isolation wall portion P is configured to be formed in each of the second heat exchange plates 210 and is classified as: a second heat exchange plate 210 in which a first isolation wall P1 and a second isolation wall P2 are formed, and a second heat exchange plate 210 in which a third isolation wall P3 is formed.

[0080] In this way, a plurality of second heat exchange plates 210 form an airtight structure because a first isolation wall P1 formed in one of the second heat exchange plates extends toward and joins the opposing heat exchange plate, and an additional airtight structure is formed because a second isolation wall P2 recessed in the opposite direction to the first isolation wall P1 matches a third isolation wall P3 formed in the opposing second heat exchange plate 210 to form a closed space.

[0081] In this way, the first isolation wall P1 connects the facing second heat exchange plates 210 to each other, and the second isolation wall P2 and the third isolation wall P3 form an airtight structure and ensure thermal insulation performance through the closed space, thereby minimizing the heat exchange between the refrigerant and the cooling water.

[0082] In this way, when constructing the isolation wall portion P in the second heat exchange plate 210 of the second heat exchange unit 200, this disclosure can construct an optimal structure that ensures the thermal insulation function between the refrigerant and the cooling water by selectively applying various embodiments of the isolation wall portion P (e.g., design conditions, airtightness, etc.).

[0083] Furthermore, this disclosure can be applied in various embodiments to a structure in which refrigerant and cooling water circulate in the first heat exchange unit 100 and the second heat exchange unit 200.

[0084] In the following descriptions of various embodiments, refrigerant or another heat exchange medium circulating in the second heat exchange unit 200 may flow into the first refrigerant inlet D1, refrigerant that has undergone heat exchange at the evaporator outlet may flow into the second refrigerant inlet D2, and refrigerant discharged from the compressor outlet may flow into the third refrigerant inlet D3. This can be configured differently depending on the thermal management circuit, and the flow of each refrigerant may be determined by valves provided in the thermal management circuit.

[0085] As a first embodiment, such as Figure 1 , Figure 6 and Figure 7 As shown, the first heat exchange unit 100 may be provided with a first refrigerant inlet D1 and a second refrigerant inlet D2, which introduce refrigerant through different paths.

[0086] The second heat exchange unit 200 may be provided with a third refrigerant inlet D3 for introducing refrigerant through another path, a first refrigerant outlet D4 for discharging the refrigerant introduced through the third refrigerant inlet D3, and a second refrigerant outlet D5 for discharging the refrigerant that has undergone heat exchange in the first heat exchange unit 100 and the second heat exchange unit 200.

[0087] In this way, the first heat exchange unit 100 is provided with a first refrigerant inlet D1 and a second refrigerant inlet D2, so that refrigerants at different temperatures can be introduced through different paths. For example, the refrigerant circulating in the second heat exchange unit 200 or another heat exchange medium can be introduced into the first refrigerant inlet D1, and the refrigerant that has undergone heat exchange at the evaporator outlet can be introduced into the second refrigerant inlet D2.

[0088] In this way, the refrigerant introduced through the first refrigerant inlet D1 exchanges heat with the cooling water introduced through the first cooling water channel 310, and then mixes with the refrigerant introduced through the second refrigerant inlet D2 and flows to the second heat exchange unit 200.

[0089] The second heat exchange unit 200 is provided with a third refrigerant inlet D3, through which high-temperature refrigerant from the compressor flows in. Furthermore, the second heat exchange unit 200 is provided with a first refrigerant outlet D4, through which the refrigerant introduced via the third refrigerant inlet D3 circulates in the second heat exchange plate 210 and is discharged. The second heat exchange unit 200 is also provided with a second refrigerant outlet D5, through which the mixed refrigerant that has undergone heat exchange in the first heat exchange unit 100 exchanges heat with the refrigerant introduced via the third refrigerant inlet D3 in the second heat exchange unit 200 and is discharged.

[0090] In this way, the present disclosure is configured such that the first heat exchange unit 100 and the second heat exchange unit 200 are connected, and the refrigerant introduced in the first heat exchange unit 100 through the first refrigerant inlet D1 and the refrigerant introduced through the second refrigerant inlet D2 are mixed and flow to the second heat exchange unit 200. The refrigerant in the first heat exchange unit 100 and the refrigerant introduced through the third refrigerant inlet D3 exchange heat in the second heat exchange unit 200, thereby effectively managing the temperature of the refrigerant.

[0091] Here, in the second heat exchange unit 200, since an isolation wall portion P is formed in a portion of the second heat exchange plate 210 or in each of the second heat exchange plates 210 around the third cooling water channel 330, the second heat exchange plate 210 is divided into an isolation area A and a heat exchange area B by the isolation wall portion P. The third cooling water channel 330 is provided in the isolation area A, and the third refrigerant inlet D3, the first refrigerant outlet D4 and the second refrigerant outlet D5 can be provided in the heat exchange area B.

[0092] In this way, in the second heat exchange unit 200, each second heat exchange plate 210 is divided into an isolation area A and a heat exchange area B by an isolation wall portion P; in the case of isolation area A, cooling water flowing in the cooling water channel 300 flows therein, and in the case of heat exchange area B, heat exchange occurs between refrigerants.

[0093] Thus, in the second heat exchange unit 200, the flow of cooling water and refrigerant is separated in each of the second heat exchange plates 210, and heat transfer is minimized through the isolation wall portion P, thereby preventing thermal interference between the cooling water and the refrigerant.

[0094] In addition, the third refrigerant inlet D3 and the second refrigerant outlet D5 can be located on one side of the heat exchange zone B, and the first refrigerant outlet D4 and the connecting channel D6 connected to the first heat exchange unit 100 can be spaced apart and located on the other side of the heat exchange zone B.

[0095] One of the multiple second heat exchange plates 210 may be configured to communicate with the third refrigerant inlet D3 and the first refrigerant outlet D4, and another of the multiple second heat exchange plates 210 may be configured to communicate with the first refrigerant outlet D4 and the connecting channel D6, and the second heat exchange plates 210 may be stacked alternately.

[0096] like Figure 6 As shown, in one of the second heat exchange plates 210, since the third refrigerant inlet D3 and the first refrigerant outlet D4 are spaced apart and arranged on one side and the other side, the refrigerant can exchange heat in the heat exchange zone B between them.

[0097] In addition, such as Figure 7 As shown, in another second heat exchange plate 210, since the first refrigerant outlet D4 and the connecting channel D6 are spaced apart on one side and the other side, the refrigerant can exchange heat in the heat exchange zone B between them.

[0098] Thus, as the second heat exchange plates 210 are stacked alternately, a flow of refrigerant can be formed through the heat exchange area B of each second heat exchange plate 210 for heat exchange.

[0099] That is, such as Figure 8 As shown, in the first heat exchange unit 100, in one of the first heat exchange plates 110, cooling water introduced through the first cooling water channel 310 flows to the second cooling water channel 320. In the other second heat exchange plate 110, refrigerant introduced through the first refrigerant inlet D1 exchanges heat with the cooling water, and then mixes with the refrigerant introduced through the second refrigerant inlet D2 and flows to the connecting channel D6. Because different first heat exchange plates 110 are alternately stacked in the first heat exchange unit 100, refrigerant and cooling water can exchange heat.

[0100] In the second heat exchange unit 200, refrigerant introduced through the connecting channel D6 flows to the second refrigerant outlet D5 in one of the second heat exchange plates 210. In the other second heat exchange plate 210, refrigerant introduced through the third refrigerant inlet D3 exchanges heat with the refrigerant introduced through the connecting channel D6, and then flows to the first refrigerant outlet D4. As different second heat exchange plates 210 are alternately stacked in the second heat exchange unit 200, heat exchange between refrigerants can be performed.

[0101] Specifically, in the second heat exchange unit 200, the third cooling water channel 330, which is connected to the first cooling water channel 310, is separated from the refrigerant side by the isolation wall portion P, so that the cooling water flowing in the third cooling water channel 330 can pass through it without heat exchange.

[0102] Meanwhile, as a second embodiment, such as Figures 9 to 11 As shown, the second heat exchange unit 200 can be configured such that the third refrigerant inlet D3 and the third cooling water channel 330 are respectively located near their respective corners on one side, the first refrigerant outlet D4 and the connecting channel D6 connected to the first heat exchange unit 100 are respectively located near their respective corners on the other side, and the second refrigerant outlet D5 is located on the other side of the third cooling water channel 330.

[0103] In this way, the second heat exchange unit 200 is provided with a third cooling water channel 330 near one corner, and a third refrigerant inlet D3 and a second refrigerant outlet D5 are arranged adjacent to each other around the third cooling water channel 330, so that the cooling water flowing in each second heat exchange plate 210 and the third cooling water channel 330 can be independently separated, and the third refrigerant inlet D3 and the second refrigerant outlet D5 can be optimally configured.

[0104] Furthermore, in the second heat exchange unit 200, the third refrigerant inlet D3 and the first refrigerant outlet D4 are diagonally spaced apart, and the second refrigerant outlet D5 and the connecting channel D6 are diagonally spaced apart, thereby ensuring the heat exchange area of ​​each refrigerant.

[0105] That is, such as Figure 9 and Figure 10 As can be seen, the third refrigerant inlet D3 and the second refrigerant outlet D5 utilize all the space around the third cooling water channel 330. The first refrigerant outlet D4 is located diagonally opposite the third refrigerant inlet D3, and the connecting channel D6 is located diagonally opposite the second refrigerant outlet D5. Thus, as the heat exchange area of ​​each second heat exchange plate 210 increases, the heat exchange efficiency can be improved.

[0106] Here, because an isolation wall portion P is formed around the third cooling water channel 330 in the second heat exchange plate 210, the second heat exchange plate 210 can be divided into an isolation area A with the third cooling water channel 330 and a heat exchange area B with a third refrigerant inlet D3, a first refrigerant outlet D4 and a second refrigerant outlet D5.

[0107] That is, in the second heat exchange unit 200, each second heat exchange plate 210 is divided into an isolation area A and a heat exchange area B by an isolation wall portion P; in the case of isolation area A, cooling water flowing in the third cooling water channel 330 flows therein, and in the case of heat exchange area B, heat exchange occurs between refrigerants.

[0108] Thus, in the second heat exchange unit 200, the flow of cooling water and refrigerant is separated in each of the second heat exchange plates 210, and heat transfer is minimized through the isolation wall portion P, thereby preventing thermal interference between the cooling water and the refrigerant.

[0109] As the second heat exchange plates 210 are stacked alternately, a flow of refrigerant can be formed through the heat exchange area B of each second heat exchange plate 210 for heat exchange.

[0110] That is, such as Figure 12 As shown, in the first heat exchange unit 100, in one of the first heat exchange plates 110, cooling water introduced through the first cooling water channel 310 flows to the second cooling water channel 320. In the other second heat exchange plate 110, refrigerant introduced through the first refrigerant inlet D1 exchanges heat with the cooling water, and then mixes with refrigerant introduced through the second refrigerant inlet D2 and flows to the connecting channel D6. The first heat exchange unit 100 is constructed such that the first heat exchange plates 110 shown in the figures are stacked alternately.

[0111] In the second heat exchange unit 200, refrigerant introduced through the connecting channel D6 flows to the second refrigerant outlet D5 in one of the second heat exchange plates 210, and refrigerant introduced through the third refrigerant inlet D3 undergoes heat exchange in the other second heat exchange plate 210, and then flows to the first refrigerant outlet D4. The second heat exchange unit 200 is configured such that the second heat exchange plates 210 shown in the figures are stacked alternately.

[0112] Specifically, in the second heat exchange unit 200, the third cooling water channel 330, which is connected to the first cooling water channel 310, is separated from the refrigerant side by the isolation wall portion P, so that the cooling water flowing in the third cooling water channel 330 can pass through it without heat exchange.

[0113] Meanwhile, as a third embodiment, such as Figures 13 to 15As shown, the first heat exchange unit 100 may be provided with a first refrigerant inlet D1 for introducing refrigerant, and the second heat exchange unit 200 may be provided with a second refrigerant inlet D2 for introducing refrigerant through another path, a third refrigerant inlet D3 for introducing refrigerant through yet another path, a first refrigerant outlet D4 for discharging refrigerant introduced through the third refrigerant inlet D3, and a second refrigerant outlet D5 for discharging refrigerant that has undergone heat exchange in the first heat exchange unit 100 and the second heat exchange unit 200.

[0114] In this manner, the first heat exchange unit 100 is provided with a first refrigerant inlet D1, such that the refrigerant introduced into the first refrigerant inlet D1 exchanges heat with the cooling water introduced through the first cooling water channel 310, and then circulates to the second heat exchange unit 200. For example, the refrigerant circulating in the second heat exchange unit 200 or another heat exchange medium can be introduced into the first refrigerant inlet D1, and the refrigerant that has undergone heat exchange at the evaporator outlet end can be introduced into the second refrigerant inlet D2.

[0115] The second heat exchange unit 200 is provided with a second refrigerant inlet D2 and a third refrigerant inlet D3. The low-temperature refrigerant passing through the evaporator can flow through the second refrigerant inlet D2, and the high-temperature refrigerant passing through the compressor can flow through the third refrigerant inlet D3.

[0116] Furthermore, the second heat exchange unit 200 is provided with a first refrigerant outlet D4. The refrigerant introduced via the third refrigerant inlet D3 circulates in the second heat exchange plate 210 and is then discharged through this outlet D4. Here, the low-temperature refrigerant introduced via the second refrigerant inlet D2 mixes with the refrigerant that has undergone heat exchange in the first heat exchange unit 100, and then exchanges heat with the refrigerant introduced via the third refrigerant inlet D3, before being discharged through the second refrigerant outlet D5.

[0117] In this way, the first heat exchange unit 100 and the second heat exchange unit 200 are configured to be interconnected, such that the refrigerant introduced into the first heat exchange unit 100 through the first refrigerant inlet D1 is mixed with the refrigerant introduced into the second heat exchange unit 200 through the second refrigerant inlet D2, and then heat is exchanged with the refrigerant introduced through the third refrigerant inlet D3, thereby allowing effective temperature management of the refrigerant to be performed.

[0118] Here, in the second heat exchange unit 200, because the isolation wall portion P is formed around the third cooling water channel 330 in part of the second heat exchange plate 210 or in each of the second heat exchange plates 210, the second heat exchange plate 210 is divided into an isolation area A and a heat exchange area B by the isolation wall portion P. The third cooling water channel 330 is provided in the isolation area A, and the second refrigerant inlet D2, the third refrigerant inlet D3, the first refrigerant outlet D4 and the second refrigerant outlet D5 can be provided in the heat exchange area B.

[0119] In this way, in the second heat exchange unit 200, each second heat exchange plate 210 is divided into an isolation area A and a heat exchange area B by an isolation wall portion P; in the case of isolation area A, cooling water flowing in the cooling water channel 300 flows therein, and in the case of heat exchange area B, heat exchange occurs between refrigerants.

[0120] Thus, in the second heat exchange unit 200, the flow of cooling water and refrigerant is separated in each of the second heat exchange plates 210, and heat transfer is minimized through the isolation wall portion P, thereby preventing thermal interference between the cooling water and the refrigerant.

[0121] In addition, the second refrigerant inlet D2 can be configured to match the communication channel D6 in the second heat exchange unit 200 (which is connected to the first heat exchange unit 100), the third refrigerant inlet D3 and the second refrigerant outlet D5 can be located on one side of the heat exchange area B, and the first refrigerant outlet D4 and the second refrigerant inlet D2 can be spaced apart and located on the other side.

[0122] In this way, the refrigerant introduced into the second refrigerant inlet D2 can exchange heat with the cooling water in the first heat exchange unit 100, and then mix with the refrigerant flowing to the second heat exchange unit 200 through the connecting channel D6.

[0123] In the second heat exchange unit 200, one of the multiple second heat exchange plates 210 can be configured to communicate with the third refrigerant inlet D3 and the first refrigerant outlet D4, and another of the multiple second heat exchange plates 210 can be configured to communicate with the second refrigerant inlet D2, the first refrigerant outlet D4 and the connecting channel D6, and the second heat exchange plates 210 can be stacked alternately.

[0124] like Figure 14 As shown, in one of the second heat exchange plates 210, since the third refrigerant inlet D3 and the first refrigerant outlet D4 are spaced apart and arranged on one side and the other side, the refrigerant can exchange heat in the heat exchange zone B between them.

[0125] In addition, such as Figure 15 As shown, in another second heat exchange plate 210, since the first refrigerant outlet D4 is located on one side and the second refrigerant inlet D2 and the connecting channel D6 are spaced apart on the other side, the refrigerant can exchange heat in the heat exchange zone B between them.

[0126] Thus, because the second heat exchange plates 210 are stacked alternately, a flow of refrigerant can be formed through the heat exchange area B of each second heat exchange plate 210 for heat exchange.

[0127] That is, such as Figure 16As shown, in the first heat exchange unit 100, cooling water introduced through the first cooling water channel 310 flows to the second cooling water channel 320 in one of the first heat exchange plates 110. In the other second heat exchange plate 210, refrigerant introduced through the first refrigerant inlet D1 exchanges heat with the cooling water and then flows to the connecting channel D6. The first heat exchange unit 100 is constructed such that the first heat exchange plates 110 shown in the figures are stacked alternately.

[0128] In the second heat exchange unit 200, in one of the second heat exchange plates 210, the refrigerant introduced through the connecting channel D6 mixes with the refrigerant introduced through the second refrigerant inlet D2 and flows to the second refrigerant outlet D5. In the other second heat exchange plate 210, the refrigerant introduced through the third refrigerant inlet D3 undergoes heat exchange and then flows to the first refrigerant outlet D4, thereby performing heat exchange between the refrigerants.

[0129] The second heat exchange unit 200 is configured such that the second heat exchange plates 210 shown in the figures are stacked alternately.

[0130] Specifically, in the second heat exchange unit 200, the third cooling water channel 330, which is connected to the first cooling water channel 310, is separated from the refrigerant side by the isolation wall portion P, so that the cooling water flowing in the third cooling water channel 330 can pass through it without heat exchange.

[0131] At the same time, such as Figure 2 As shown, a plate 400 is provided between the first heat exchange unit 100 and the second heat exchange unit 200, so that the first heat exchange unit 100 and the second heat exchange unit 200 can be connected through the plate 400.

[0132] The plate 400 is disposed between the first heat exchange unit 100 and the second heat exchange unit 200 to prevent thermal interference between the first heat exchange unit 100 and the second heat exchange unit 200. In addition, the plate 400 may have a plurality of holes that match the channels for refrigerant flow (including the cooling water channel 300).

[0133] Here, a recessed pocket portion 410 with a predetermined area is formed in the plate 400, such that the space defined by the pocket portion 410 can be formed on the surface facing the first heat exchange unit 100 or the second heat exchange unit 200.

[0134] In this way, the recessed portion 410 can be formed on the surface of the plate 400 facing either the first heat exchange unit 100 or the second heat exchange unit 200, or on both surfaces facing the first heat exchange unit 100 and the second heat exchange unit 200. Because such a recessed portion 410 is formed by recessing from the plate 400 to create a cavity space, heat transfer between the plate 400 and the first heat exchange unit 100 or between the plate 400 and the second heat exchange unit 200 is reduced.

[0135] The heat exchanger device constructed according to the above structure ensures efficient heat exchange between various refrigerants, allows cooling water to circulate in an independent flow path, and prevents thermal interference when multiple heat exchange units are set up.

[0136] Although this disclosure has been illustrated and described in conjunction with specific embodiments, it will be apparent to those skilled in the art that various improvements and modifications can be made to this disclosure without departing from the scope of the technical spirit provided by the following claims.

[0137] Explanation of reference numerals in the attached figures

[0138] 100: First heat exchange unit; 110: First heat exchange plate

[0139] 200: Second heat exchange unit; 210: Second heat exchange plate

[0140] 300: Cooling water passage; 310: First cooling water passage

[0141] 320: Second cooling water passage; 330: Third cooling water passage

[0142] 400: Plate, 410: Concave Bag Section

[0143] A: Isolation area, B: Heat exchange area

[0144] D1: First refrigerant inlet, D2: Second refrigerant inlet

[0145] D3: Third refrigerant inlet, D4: First refrigerant outlet

[0146] D5: Second refrigerant outlet; D6: Connecting passage

[0147] P: Part of the isolation wall, P1: First isolation wall

[0148] P2: Second isolation wall, P3: Third isolation wall

Claims

1. A heat exchanger device, comprising: The first heat exchange unit consists of multiple first heat exchange plates, wherein the refrigerant and cooling water are introduced through different paths and circulate between the first heat exchange plates, so that the refrigerant and cooling water exchange heat. The second heat exchange unit consists of multiple second heat exchange plates and is configured such that the refrigerant mixed after heat exchange in the first heat exchange unit exchanges heat with the refrigerant introduced through another path. as well as The cooling water passage through which cooling water flows is connected to a first heat exchange unit and a second heat exchange unit. It is connected to the first heat exchange unit to supply cooling water thereto, and to the second heat exchange unit to bypass the second heat exchange unit.

2. The heat exchanger device according to claim 1, wherein, The first heat exchange unit is provided with a first cooling water channel for introducing cooling water and a second cooling water channel for discharging the cooling water that has undergone heat exchange in the first heat exchange unit. The second heat exchange unit is provided with a third cooling water channel that is connected to the first cooling water channel and bypasses the second heat exchange unit.

3. The heat exchanger device of claim 2, wherein, By forming an isolation wall portion around the third cooling water channel in a portion of the second heat exchange plate or in each of the second heat exchange plates, the second heat exchange plate is divided into an isolation area and a heat exchange area by the isolation wall portion.

4. The heat exchanger device of claim 3, wherein, In some of the multiple second heat exchange plates, the isolation wall portion is recessed toward the opposing second heat exchange plate and engages with the opposing second heat exchange plate, thereby forming an airtight structure.

5. The heat exchanger device of claim 4, wherein, The second heat exchange unit is constructed such that a second heat exchange plate with an isolation wall portion and a second heat exchange plate without an isolation wall portion are alternately stacked.

6. The heat exchanger device of claim 3, wherein, The isolation wall portion includes: a first isolation wall recessed in one of the second heat exchange plates and in contact with the opposing heat exchange plate; a second isolation wall recessed in the opposite direction to the first isolation wall to form a space; and a third isolation wall recessed in the other second heat exchange plate in the same direction as the first isolation wall while facing the second isolation wall, thereby forming a closed space together with the space of the second isolation wall.

7. The heat exchanger device of claim 6, wherein, The second heat exchange unit is configured such that a second heat exchange plate having a first isolation wall and a second isolation wall is alternately stacked with a second heat exchange plate having a third isolation wall, and the isolation walls are joined together.

8. The heat exchanger device of claim 2, wherein, The first heat exchange unit is provided with a first refrigerant inlet and a second refrigerant inlet, which introduce refrigerant through different paths, and The second heat exchange unit is provided with a third refrigerant inlet for introducing refrigerant through another path, a first refrigerant outlet for discharging refrigerant introduced through the third refrigerant inlet, and a second refrigerant outlet for discharging refrigerant that has undergone heat exchange in the first and second heat exchange units.

9. The heat exchanger device of claim 8, wherein, By forming an isolation wall portion around the third cooling water channel in a portion of the second heat exchange plate or in each of the second heat exchange plates, the second heat exchange plate is divided into an isolation area and a heat exchange area by the isolation wall portion, and The third cooling water channel is located in the isolation area, while the third refrigerant inlet, the first refrigerant outlet, and the second refrigerant outlet are located in the heat exchange area.

10. The heat exchanger device of claim 8, wherein, The third refrigerant inlet and the second refrigerant outlet are located on one side of the heat exchange area, while the first refrigerant outlet and the connecting channel connected to the first heat exchange unit are separated and located on the other side of the heat exchange area.

11. The heat exchanger device of claim 8, wherein, One of the multiple second heat exchange plates is configured to communicate with the third refrigerant inlet and the first refrigerant outlet, and another of the multiple second heat exchange plates is configured to communicate with the first refrigerant outlet and the connecting channel, with the second heat exchange plates stacked alternately.

12. The heat exchanger device of claim 8, wherein, The second heat exchange unit is configured such that the third refrigerant inlet and the third cooling water channel are respectively located near each corner on one side, the first refrigerant outlet and the connecting channel connected to the first heat exchange unit are respectively located near each corner on the other side, and the second refrigerant outlet is located on the other side of the third cooling water channel.

13. The heat exchanger device of claim 12, wherein, By forming an isolation wall portion around the third cooling water channel in the second heat exchange plate, the second heat exchange plate is divided into an isolation area with the third cooling water channel and a heat exchange area with a third refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet.

14. The heat exchanger device of claim 12, wherein, In the second heat exchange unit, the third refrigerant inlet and the first refrigerant outlet are diagonally spaced apart, and the second refrigerant outlet and the connecting channel are diagonally spaced apart.

15. The heat exchanger apparatus according to claim 2, wherein, The first heat exchange unit is provided with a first refrigerant inlet for introducing refrigerant, and The second heat exchange unit is provided with a second refrigerant inlet that introduces refrigerant through another path, a third refrigerant inlet that introduces refrigerant through yet another path, a first refrigerant outlet for discharging refrigerant introduced through the third refrigerant inlet, and a second refrigerant outlet for discharging refrigerant that has undergone heat exchange in the first heat exchange unit and the second heat exchange unit.

16. The heat exchanger apparatus according to claim 15, wherein, By forming an isolation wall portion around the third cooling water channel in a portion of the second heat exchange plate or in each of the second heat exchange plates, the second heat exchange plate is divided into an isolation area and a heat exchange area by the isolation wall portion, and The third cooling water channel is located in the isolation area, while the second refrigerant inlet, the third refrigerant inlet, the first refrigerant outlet, and the second refrigerant outlet are located in the heat exchange area.

17. The heat exchanger apparatus according to claim 15, wherein, The second refrigerant inlet is configured to match the communication channel in the second heat exchange unit that connects to the first heat exchange unit, and The third refrigerant inlet and the second refrigerant outlet are located on one side of the heat exchange area, while the first refrigerant outlet and the second refrigerant inlet are spaced apart and located on the other side.

18. The heat exchanger apparatus according to claim 15, wherein, One of the multiple second heat exchange plates is configured to communicate with the third refrigerant inlet and the first refrigerant outlet, and another of the multiple second heat exchange plates is configured to communicate with the second refrigerant inlet, the first refrigerant outlet and the connecting channel, and the second heat exchange plates are stacked alternately.

19. The heat exchanger apparatus according to claim 1, wherein, A plate is provided between the first heat exchange unit and the second heat exchange unit, so that the first heat exchange unit and the second heat exchange unit are connected through the plate.

20. The heat exchanger apparatus according to claim 19, wherein, A recessed pocket with a predetermined area is formed in the plate, such that the space defined by the recessed pocket is formed on the surface facing the first heat exchange unit or the second heat exchange unit.

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