Integrated plate type heat exchanger

Abstract

The utility model relates to an integrated plate type heat exchanger which comprises a water-cooling condensation module and a heat regeneration module which are connected through a middle connecting plate. The water-cooling condensation module is provided with a cooling liquid channel and a refrigerant channel which are formed by alternately stacked laminations, and the water-cooling condensation module is used for cooling a refrigerant; the heat return module is provided with a refrigerant high-pressure channel and a refrigerant low-pressure channel which are formed by a plurality of layers of laminations, and heat exchange between high-pressure refrigerants and low-pressure refrigerants is achieved. The heat regeneration module further comprises a liquid storage cavity and a drying bottle which are used for storing the supercooled liquid refrigerant and absorbing water correspondingly. And the refrigerant flows out from the refrigerant high-pressure outlet after being dried and filtered. The structure integrates multiple functions of the water-cooling condenser, the liquid storage tank and the heat regenerator, the number of system pipelines and the number of parts are reduced, and the risk of system refrigerant leakage is reduced. And the drying bottle adopts a detachable design and is convenient to maintain and replace. In addition, the size and the weight of the heat exchanger are reduced through the modular design, the integration and the production efficiency of the heat management system are improved, and the heat management system is suitable for the electric vehicle heat management system needing compact space layout.

Description

Technical Field

[0001] This utility model belongs to the technical field of plate heat exchangers and relates to an integrated plate heat exchanger. Background Technology

[0002] In existing fully indirect thermal management systems for R290 refrigerant, the refrigerant circuit often includes a liquid receiver tank at the rear of the water-cooled condenser, connected to this device via separate piping. The tank and piping occupy significant space, hindering module miniaturization and integration, and impeding continuous optimization of the vehicle's compact front compartment layout. Furthermore, assembling dispersed components on the production line is time-consuming and labor-intensive, hindering the need to improve production efficiency and shorten production cycles. Finally, due to the safety requirements of R290 refrigerant, the refrigerant system should have a sufficiently small internal volume to reduce the refrigerant charge, thereby strictly controlling refrigerant leakage to ultimately reduce the risk of R290 refrigerant leakage and explosion. Therefore, using components such as liquid receiver tanks and gas-liquid separators not only increases the difficulty of space layout but also increases the risk of leakage at system connections.

[0003] The liquid receiver in the refrigerant system circuit has three main functions: liquid storage, filtration, and drying. Even refrigerant systems that eliminate the liquid receiver must retain these functions. In the aftermarket, if the system's filtration and drying functions are damaged, the entire liquid receiver, which integrates these functions, needs to be replaced. However, currently, there are no solutions or measures in the electric vehicle market that specifically replace only a single function. Therefore, the traditional design of this type of component leads to difficulties in troubleshooting after-sales malfunctions, high replacement costs for customers, and resource waste and serious environmental pollution caused by discarding undamaged functional components. Utility Model Content

[0004] In view of this, the purpose of this utility model is to solve the above problems and provide an integrated plate heat exchanger.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An integrated plate heat exchanger includes a water-cooled condensing module and a regenerative module respectively disposed on both sides of an intermediate connecting plate;

[0007] The water-cooled condensation module is provided with coolant channels and refrigerant channels arranged alternately in layers; the regeneration module is provided with refrigerant high-pressure channels and refrigerant low-pressure channels arranged alternately in layers; the coolant channels and refrigerant channels, as well as the refrigerant high-pressure channels and refrigerant low-pressure channels, are all formed by stacking multiple layers of heat exchange plates, and a single medium channel is formed between adjacent heat exchange plates, and different media in the medium channels of adjacent layers exchange heat through the heat exchange plates;

[0008] The coolant channel is connected to the inlet pipe at one end and the outlet pipe at the other end, allowing the coolant to enter the water-cooled condenser module; the refrigerant channel is connected to the refrigerant inlet at one end and to the high-pressure refrigerant channel at the other end through a through hole on the intermediate connecting plate, and the other end of the high-pressure refrigerant channel is connected to the high-pressure refrigerant outlet; the low-pressure refrigerant channel is connected to the low-pressure refrigerant inlet at one end and to the low-pressure refrigerant outlet at the other end.

[0009] The regenerative module has a liquid storage chamber and a drying bottle on the side away from the intermediate connecting plate. The liquid storage chamber is located between the refrigerant high-pressure channel and the refrigerant high-pressure outlet and is used to store subcooled liquid refrigerant. The drying bottle is connected to the regenerative module by a bracket. The bracket has a drying channel that connects the drying bottle and the liquid storage chamber. A filter screen is provided on the refrigerant high-pressure outlet.

[0010] The coolant in the coolant channel cools the high-pressure refrigerant in the refrigerant channel. The water-cooled high-pressure refrigerant enters the high-pressure refrigerant channel. The low-pressure refrigerant in the low-pressure refrigerant channel undergoes secondary evaporation and absorbs heat, cooling the high-pressure refrigerant in the high-pressure refrigerant channel into subcooled liquid refrigerant. The subcooled liquid refrigerant is stored in the storage chamber and the drying bottle. After drying and filtration, it flows out from the high-pressure refrigerant outlet.

[0011] Furthermore, the water inlet pipe and water outlet pipe are located on the side of the water-cooled condensing module away from the intermediate connecting plate, and the refrigerant inlet, refrigerant high-pressure outlet, refrigerant low-pressure inlet, and refrigerant low-pressure outlet are all located on the side of the regenerating module away from the intermediate connecting plate.

[0012] Furthermore, the regenerative module includes a liquid storage top plate, an upper connecting plate, upper top plates 2-6, multiple stacked heat exchange plates, and a lower bottom plate, which are sequentially stacked and brazed together; the lower bottom plate is fixedly connected to the intermediate connecting plate.

[0013] The liquid storage chamber is located inside the liquid storage top plate; the refrigerant inlet, refrigerant high-pressure outlet, refrigerant low-pressure inlet, and refrigerant low-pressure outlet are all located on the liquid storage top plate; a circular tube is provided on the refrigerant inlet, and the circular tube passes through the intermediate connecting plate to connect the refrigerant inlet with the refrigerant channel.

[0014] Furthermore, the water-cooled condensation module includes a bottom plate that is sequentially stacked and brazed into one piece, multiple heat exchange plates, an upper top plate, and an upper top plate connecting plate; the bottom plate is fixedly mounted on the intermediate connecting plate; and the water inlet pipe and water outlet pipe are mounted on the upper top plate connecting plate.

[0015] Furthermore, the heat exchange laminations are provided with concave and convex deformation areas, and two adjacent heat exchange laminations are stacked alternately in opposite directions to form a heat exchange cavity in the middle; multiple through holes are provided around the heat exchange laminations, and the heat exchange cavities formed between the multiple heat exchange laminations are connected in groups through the through holes to form two sets of alternating stacked channels, thereby forming the coolant channel and refrigerant channel in the water-cooled condensation module, and the refrigerant high-pressure channel and refrigerant low-pressure channel in the regeneration module.

[0016] Furthermore, the drying bottle contains several desiccant particles, and the filter screen is detachably clipped onto the refrigerant high-pressure outlet.

[0017] Furthermore, the drying bottle is detachably connected to the bracket via threads.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. The integrated plate heat exchanger in this utility model consists of a water-cooled condenser module and a regenerative module with the same external dimensions connected back to back. The high-pressure side refrigerant is interconnected through a fixed connection in the middle, which reduces the connecting pipes between the two units, improves the heat exchange efficiency of the water-cooled condenser, ensures the reasonable subcooling of the refrigerant before the expansion valve and the superheat of the refrigerant on the pressure suction side, thereby improving the overall system cooling performance.

[0020] 2. The integrated plate heat exchanger of this utility model has three major functions: water-cooled condenser, liquid storage tank and regenerator. Through functional integration, the layout space of traditional separate water-cooled condenser and regenerator is reduced, the number of parts and the number of pipe connection ports are reduced, making the overall structure compact and occupying little space. It has the advantages of easy manufacturing, easy assembly, easy system integration and low manufacturing cost.

[0021] 3. This utility model decomposes the function of a traditional liquid storage tank into three major modules: liquid storage, filtration, and drying. A cavity for storing liquid refrigerant is provided in the regenerator module. The internal space of this cavity can store excess liquid refrigerant during system operation, serving as the main storage area for liquid refrigerant. The internal volume of the liquid storage cavity can be designed according to the system's refrigerant storage requirements. A removable filter screen is installed at the high-pressure side outlet of the regenerator module to perform filtration. To maintain the dryness of the refrigerant system and prevent ice blockage of the expansion valve, its drying function is replaced by a miniaturized, easily installed drying bottle. This drying bottle contains a desiccant that absorbs moisture and also serves as an auxiliary storage device for liquid refrigerant. Furthermore, this drying bottle has only one connection interface, reducing one connection port compared to a traditional liquid storage tank, thus lowering the risk of refrigerant leakage.

[0022] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the fluid flow direction in the integrated plate heat exchanger of this utility model.

[0025] Figure 2 , 3 This is a perspective view of the integrated plate heat exchanger in this utility model.

[0026] Figure 4 This is a 3D exploded view of the integrated plate heat exchanger in this utility model.

[0027] Figure 5 This is an exploded plan view of the integrated plate heat exchanger in this utility model.

[0028] Figure 6 This is a partial schematic diagram of the integrated plate heat exchanger in this utility model.

[0029] Figure 7 This is a schematic diagram of the liquid storage chamber structure of the regenerative module in this utility model.

[0030] Figure 8 This is a schematic diagram of the heat exchanger stack structure in this utility model. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] Please see Figures 1-8 , is an integrated plate heat exchanger, including a water-cooled condensing module 1 and a heat recovery module 2 respectively disposed on both sides of the intermediate connecting plate 3;

[0035] The water-cooled condensing module 1 is provided with coolant channels and refrigerant channels arranged alternately in layers; the regenerator module is provided with refrigerant high-pressure channels and refrigerant low-pressure channels arranged alternately in layers; the coolant channels and refrigerant channels, as well as the refrigerant high-pressure channels and refrigerant low-pressure channels, are all formed by stacking multiple layers of heat exchange plates, and a single medium channel is formed between adjacent heat exchange plates. Different media in the medium channels of adjacent layers undergo convective forced heat exchange through the heat exchange plates;

[0036] One end of the coolant passage is connected to the inlet pipe G1, and the other end is connected to the outlet pipe G2, which connects the coolant to the water-cooled condenser module; one end of the refrigerant passage is connected to the refrigerant inlet S1, and the other end is connected to one end of the high-pressure refrigerant passage through a through hole on the intermediate connecting plate, and the other end of the high-pressure refrigerant passage is connected to the high-pressure refrigerant outlet S2; one end of the low-pressure refrigerant passage is connected to the low-pressure refrigerant inlet S3, and the other end is connected to the low-pressure refrigerant outlet S4.

[0037] The side of the regenerating module 2 away from the intermediate connecting plate is provided with a liquid storage chamber S5 and a drying bottle 4. The liquid storage chamber S5 is located between the refrigerant high-pressure channel and the refrigerant high-pressure outlet and is used to store subcooled liquid refrigerant. The drying bottle 4 is connected to the regenerating module through a bracket. The bracket is provided with a drying channel that connects the drying bottle and the liquid storage chamber. A filter screen 2-3 is provided on the refrigerant high-pressure outlet.

[0038] The coolant in the coolant channel cools the high-pressure refrigerant in the water-cooled condenser module. The water-cooled high-pressure refrigerant enters the high-pressure refrigerant channel of the regenerative module. The low-pressure refrigerant in the low-pressure refrigerant channel absorbs heat through secondary evaporation, cooling the high-pressure refrigerant in the high-pressure refrigerant channel into subcooled liquid refrigerant. The subcooled liquid refrigerant is stored in the storage chamber and the drying bottle. After drying and filtration, it flows out from the high-pressure refrigerant outlet.

[0039] The water inlet and outlet pipes are located on the side of the water-cooled condensing module away from the intermediate connecting plate. The refrigerant inlet, refrigerant high-pressure outlet, refrigerant low-pressure inlet, and refrigerant low-pressure outlet are all located on the side of the regenerating module away from the intermediate connecting plate.

[0040] The regenerating module includes a liquid storage top plate 2-1, an upper connecting plate 2-5, an upper top plate 2-6, multiple stacked heat exchange plates 2-7, and a lower bottom plate 2-8, which are sequentially stacked and brazed together. The liquid storage chamber S5 is located inside the liquid storage top plate 2-1. The refrigerant inlet, refrigerant high-pressure outlet, refrigerant low-pressure inlet, and refrigerant low-pressure outlet are all located on the liquid storage top plate. A circular tube 2-4 is provided on the refrigerant inlet, which passes through the regenerating module and the intermediate connecting plate to connect the refrigerant inlet with the refrigerant channel of the water-cooled condensing module.

[0041] The heat exchange fins are provided with concave and convex deformation areas. Adjacent heat exchange fins are stacked alternately in opposite directions. The contact parts of adjacent fins are brazed and then welded together to form a heat exchange cavity in the middle. Multiple through holes are provided around the heat exchange fins. The heat exchange cavities formed between multiple heat exchange fins are connected through the through holes to form two sets of alternating stacked channels. This forms coolant channels and refrigerant channels in the water-cooled condensation module, and high-pressure refrigerant channels and low-pressure refrigerant channels in the regeneration module.

[0042] Specifically, one side of the intermediate connecting plate 3 is assembled with the back of the lower base plate 2-8 in the regenerating module 2, and the other side of the intermediate connecting plate 3 is simultaneously connected to the back of the lower base plate 1-1 of the water-cooled condensing module. The water-cooled condensing module 1 and the regenerating module 2 are connected simultaneously through both sides of the intermediate connecting plate 3. The high-pressure refrigerant side of the regenerating module and the refrigerant side of the water-cooled condensing module are only interconnected through the elliptical hole S130 in the intermediate connecting plate 3. In addition, one end of the circular insert 2-4 with a certain wall thickness is inserted into the through hole S121 on the liquid storage top plate 2-1 and welded together during the brazing process. The circular insert 2-4 penetrates the elliptical hole inside the regenerating module 2, the intermediate connecting plate 3 and the water-cooled condensing module 1 corresponding to the through hole S121. The other end of the circular insert 2-4 stops at the flow channel stack F7 of the water-cooled condensing module. The outer radius of the circular tube 2-4 is smaller than the minor axis of the elliptical hole it passes through, so that the medium-temperature, high-pressure gaseous refrigerant after the initial condensation of the water-cooled condensing module flows into the regenerating module for further cooling. At the same time, the outer radius of the circular tube 2-4 is consistent with the radius of the corresponding circular hole on the flow channel stack F7 of the water-cooled condensing module through which it is inserted. The flange of the circular hole of the flow channel stack F7 is welded to the circular tube 2-4 during the brazing process, so that the flow channel stack F7 has the function of changing the flow of refrigerant inside the water-cooled condensing module.

[0043] The water-cooled condensing module 1 includes a bottom plate 1-1, multiple heat exchange plates 1-2, an upper top plate 1-3, and an upper top plate connecting plate 1-4, which are sequentially stacked and brazed together. The bottom plate 1-1 is fixedly welded to the intermediate connecting plate. Through holes S314 and S414 in the upper top plate connecting plate 1-4 correspond to the installation of the inlet pipe G1 and outlet pipe G2 for the flow of coolant, respectively. The subcooled area of ​​the water-cooled condensing module is designed to be located on the high-pressure side of the regenerating module, i.e., the heat exchange area constructed by the interconnection of through holes S128, S127, S126, S125, and S121 with through holes S227, S226, S225, and S221 in the regenerating module. Figure 4 , Figure 5 As shown, from the multiple heat exchange plates 1-2 and the top plate 1-4, it can be seen that the space connected by the channel on the left side of the heat exchange plate of the water-cooled condensing module is the coolant flow and heat exchange area, and the space connected by the through hole on the right side of the heat exchange plate 1-2 is the refrigerant flow and heat exchange area of ​​the water-cooled condensing module.

[0044] like Figures 4-5As shown, a bracket 2-2 is provided on one side of the liquid storage top plate 2-1 to mate and seal a drying bottle 4 containing several desiccant particles 4-1. The drying bottle 4 is connected to the bracket 2-2 and sealed together by a combination of threads and sealing rings. The filter screen 2-3 can be inserted into the through hole S221 inside the refrigerant high-pressure outlet port of the liquid storage top plate 2-1 through the through hole S1 on the outer surface of the liquid storage top plate 2-1. If the system performance is affected by severe blockage by foreign objects during operation, the filter screen 2-3 can be removed and replaced with a new one using tools.

[0045] Combination Figure 4 , Figure 5 , Figure 6 The upper connecting plate 2-5 and the liquid storage top plate 2-1 are assembled and welded together vertically to form an internal liquid storage chamber S5. This liquid storage chamber S5 is interconnected with the inner through-hole S221 of the refrigerant high-pressure outlet of the regenerator module. When there is excess subcooled liquid refrigerant in the system, it can flow into and be stored in the liquid storage chamber S5. When the amount of refrigerant required for system circulation increases, the liquid refrigerant stored in the liquid storage chamber S5 flows out through the refrigerant high-pressure outlet S221 of the regenerator module, passes through S2, and enters before the expansion valve to participate in system circulation. Figure 2 , Figure 5 It is understood that a refrigerant inlet S1, a high-pressure refrigerant outlet S2, a low-pressure refrigerant inlet S3, and a low-pressure refrigerant outlet S4 are provided on the outer surface of the liquid storage top plate 2-1, and this surface is interconnected with other components through an end-face sealing method; for example Figure 6 As shown in the enlarged area of ​​A3, there is a groove 211 on the outside of the refrigerant low-pressure outlet S4 for placing a sealing ring for the end face seal. The other three outer pipe openings have similar design structures. The inner side of the liquid storage top plate 2-1 is provided with through holes S121, S221, S321, and S421, which correspond to the refrigerant inlet S1, refrigerant high-pressure outlet S2, refrigerant low-pressure inlet S3, and refrigerant low-pressure outlet S4, respectively. The inner side of the liquid storage top plate 2-1 is assembled and welded together with the upper connecting plate 2-5. The four through holes of the two plates are independent of each other and are not interconnected at this position.

[0046] like Figure 7 As shown, the liquid storage chamber S5 in the liquid storage top plate 2-1 is connected to the dryer bottle 4 through the through hole in the adjacent bracket 2-2. Excess refrigerant can be stored in the dryer bottle 4 through this channel. At the same time, the desiccant inside the dryer bottle absorbs the moisture in the refrigerant, which can prevent moisture from blocking the expansion valve and affecting its function.

[0047] like Figure 1 , Figure 4 , Figure 5 , Figure 6As shown, the high-temperature, high-pressure gas exiting from the compressor's pressure side can enter the inner through-hole S121 of the refrigerant inlet S1 on the outer side of the liquid storage top plate 2-1 of the regenerator module, and then enter the circular insert 2-4. The refrigerant in this state will not enter the heat exchange area of ​​the regenerator module. Afterwards, the gas in this state directly enters the water-cooled condensing module through the inside of the circular insert 2-4. At this time, the high-temperature, high-pressure gas refrigerant condenses inside the water-cooled condensing module, becoming a medium-temperature, high-pressure gas refrigerant, and then passes through the through-hole of the water-cooled condensing module 1. The gaseous refrigerant, which is at medium temperature and high pressure, enters the high-pressure side heat exchange area inside the regenerator module through the elliptical through-hole S130 of the intermediate connecting plate 3. In this area, the gaseous refrigerant absorbs heat from the low-temperature and low-pressure refrigerant on the low-pressure side of the regenerator module and becomes a liquid refrigerant in a subcooled state at medium temperature and high pressure. The liquid refrigerant flows out from the through-hole S221 of the liquid storage top plate 2-1. At the same time, excess liquid refrigerant can be stored in the liquid storage cavity S5 of the liquid storage top plate 2-1 through the channel between the inner through-hole S221 of the liquid storage top plate 2-1 and its liquid storage cavity S5.

[0048] The refrigerant flow direction in the water-cooled condensing module is as follows: refrigerant inlet S1 → through hole S121 → circular insert 2-4 → heat exchange area of ​​water-cooled condensing module 1 (through hole S112 → through hole S212) → through hole S130 of intermediate connecting plate 3 → heat recovery module 2 (through hole S128 → through hole S127 → through hole S227 → through hole S226 → through hole S225 → through hole S221) → liquid storage chamber S5 → refrigerant high pressure outlet S2.

[0049] The coolant flow direction of the water-cooled condenser module intersects with the refrigerant flow direction to enhance heat exchange efficiency. Lower-temperature coolant flows from the inlet pipe G1 through through-holes S314 and S313 into through-hole S312 inside the water-cooled condenser module. Within the heat exchange fins, it flows from through-hole S312 to through-hole S412. During this process, the low-temperature coolant exchanges heat with the high-temperature refrigerant, becoming a higher-temperature coolant. At this point, the high-temperature, high-pressure refrigerant is cooled from the coolant to a medium-temperature, high-pressure state. Then, the heated coolant passes through through-holes S413 and S414, finally flowing out from the outlet pipe G2. Therefore, the water-side flow direction of the water-cooled condenser module is: Inlet pipe G1 → Through-hole S314 → Through-hole S313 → Through-hole S312 → Through-hole S412 → Through-hole S413 → Through-hole S414 → Outlet pipe G2.

[0050] The flow direction of the low-temperature, low-pressure gas refrigerant in the regenerator module is as follows: low-pressure refrigerant inlet S3 → through hole S321 → through hole S325 → through hole S326 → through hole S327 → through hole S427 → through hole S426 → through hole S425 → through hole S421 → low-pressure refrigerant outlet S4.

[0051] Each heat exchanger plate 1-2 or heat exchanger plate 2-7 is formed by continuous stamping of a composite aluminum plate of a certain thickness using a die, consisting of multiple curved areas with concave and convex deformation characteristics and flat areas without deformation characteristics. Its perimeter is formed by stamped flanges for assembly positioning and subsequent brazing sealing (e.g., ...). Figure 8 The heat exchange stacks P1 (region 106) and P2 (region 206) typically have three or four through holes on their surfaces. Heat exchange stacks with three through holes are heat exchange stacks that change the flow of the medium inside the plate heat exchanger.

[0052] like Figure 7 , Figure 8 As shown, multiple heat exchange fins are stacked together in an alternating pattern. Due to the simultaneous presence of both concave and convex features and planar features within the fins, the stacked fins can form two separate heat exchange regions for different media. For example... Figure 6 As shown in the enlarged area A2, the heat exchange region is constructed by brazing heat exchange plates F1, F2, F3, F4, and F5 together. Heat exchange plates F1 and F2 are welded together to form a heat exchange inner cavity C5, and heat exchange plates F3 and F4 are welded together to form a heat exchange inner cavity C6. Heat exchange inner cavities C5 and C6 are interconnected coolant flow areas on the outside. The inner cavity C7 formed by welding heat exchange plates F2 and F3, and the inner cavity C8 formed by welding heat exchange inner cavities F4 and F5, are the heat exchange areas for the refrigerant in the water-cooled condensing module.

[0053] On the regenerator module side, similar to the water condenser module side, the heat exchange area is constructed by brazing heat exchange plates P1, P2, P3, P4, and P5 together. Heat exchange plates P1 and P2 are welded together to form a heat exchange cavity C1, and heat exchange plates P3 and P4 are welded together to form a heat exchange cavity C2. Heat exchange cavities C1 and C2 are the low-pressure refrigerant side of the regenerator, which is interconnected on the outside. Heat exchange cavities C3 formed by welding heat exchange plates P2 and P3, and heat exchange cavities C4 formed by welding heat exchange plates P4 and P5, are the heat exchange areas on the high-pressure refrigerant side of the regenerator module.

[0054] Combination Figure 8To illustrate the welding of heat exchanger fins and the medium channel, as shown in the figure, heat exchanger fin P1 is placed below heat exchanger fin P2 and assembled together. At this time, the through holes S127, S227, S327, and S427 in heat exchanger fin P1 correspond to the through holes S127', S227', S327', and S427' in heat exchanger fin P2, respectively. Because the heat exchanger fins have many deformable and non-deformable areas, such as the ribs 102 in heat exchanger fin P1 and 202 in heat exchanger fin P2, which interlock and abut against each other to form interconnected cavities, the medium can flow through these cavities after they connect to a certain through hole channel in the heat exchanger fins. The inner side of the flanged area 106 around the perimeter of heat exchanger fin P1 and the outer side of the flanged area 206 around the perimeter of heat exchanger fin P2 are in contact with each other and welded together to prevent medium leakage. After the two heat exchange plates are stacked together, the back sides of the upward protruding areas 104 and 105 in heat exchange plate P1 will partially contact and weld together with the flat area 207 in heat exchange plate P2. At this time, the fluid flowing between the through holes S127, S227 and S127', S227' will not flow into the internal cavity constructed by stacking heat exchange plates P1 and P2 together, but can only flow into the adjacent cavities for heat exchange.

[0055] Furthermore, the upwardly protruding deformation regions 204 and 205 in the heat exchanger plate P2 will contact and support the corresponding positions of the heat exchanger plates assembled on it. These contact parts will be welded together after subsequent brazing. The inwardly deformed region 107 of the heat exchanger plate P1 contacts the corresponding position of the heat exchanger plate P2 and supports a reasonable safe distance between the two plates to avoid compression deformation. Therefore, the undeformed region 101 near the through hole S327 of the heat exchanger plate P1 and the inwardly deformed region 201 near the through hole S327' of the heat exchanger plate P2 will not contact each other, forming an open channel. The medium flowing through this through hole can flow into the internal cavity constructed by stacking the heat exchanger plates P1 and P2 together for heat exchange. Then, the heat-exchanged medium can flow out from the open channel formed by the undeformed region 103 near the through hole S427 of the lower heat exchanger plate P1 and the inwardly deformed region 203 near the through hole S427' of the heat exchanger plate P2. In general, the medium flowing through the through holes S327, S327' and S427, S427' of heat exchange stacks P1 and P2 can enter the cavity constructed between the two heat exchange stacks for heat exchange through the opening channel formed on the left side of the two heat exchange stacks. At the same time, the medium flowing on this side cannot flow into the adjacent cavities above and below for heat exchange.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An integrated plate heat exchanger, characterized in that: This includes a water-cooled condensation module and a heat recovery module, respectively located on both sides of the intermediate connecting plate; The water-cooled condensation module is provided with coolant channels and refrigerant channels arranged alternately in layers; the regeneration module is provided with refrigerant high-pressure channels and refrigerant low-pressure channels arranged alternately in layers; the coolant channels and refrigerant channels, as well as the refrigerant high-pressure channels and refrigerant low-pressure channels, are all formed by stacking multiple layers of heat exchange plates, and a single medium channel is formed between adjacent heat exchange plates, and different media in the medium channels of adjacent layers exchange heat through the heat exchange plates; The coolant channel is connected to the inlet pipe at one end and the outlet pipe at the other end, allowing the coolant to enter the water-cooled condenser module; the refrigerant channel is connected to the refrigerant inlet at one end and to the high-pressure refrigerant channel at the other end through a through hole on the intermediate connecting plate, and the other end of the high-pressure refrigerant channel is connected to the high-pressure refrigerant outlet; the low-pressure refrigerant channel is connected to the low-pressure refrigerant inlet at one end and to the low-pressure refrigerant outlet at the other end. The regenerative module has a liquid storage chamber and a drying bottle on the side away from the intermediate connecting plate. The liquid storage chamber is located between the refrigerant high-pressure channel and the refrigerant high-pressure outlet and is used to store subcooled liquid refrigerant. The drying bottle is connected to the regenerative module by a bracket. The bracket has a drying channel that connects the drying bottle and the liquid storage chamber. A filter screen is provided on the refrigerant high-pressure outlet. The coolant in the coolant channel cools the high-pressure refrigerant in the refrigerant channel. The water-cooled high-pressure refrigerant enters the high-pressure refrigerant channel. The low-pressure refrigerant in the low-pressure refrigerant channel undergoes secondary evaporation and absorbs heat, cooling the high-pressure refrigerant in the high-pressure refrigerant channel into subcooled liquid refrigerant. The subcooled liquid refrigerant is stored in the storage chamber and the drying bottle. After drying and filtration, it flows out from the high-pressure refrigerant outlet.

2. The integrated plate heat exchanger according to claim 1, characterized in that: The water inlet pipe and water outlet pipe are located on the side of the water-cooled condensing module away from the intermediate connecting plate. The refrigerant inlet, refrigerant high-pressure outlet, refrigerant low-pressure inlet, and refrigerant low-pressure outlet are all located on the side of the regenerating module away from the intermediate connecting plate.

3. The integrated plate heat exchanger according to claim 2, characterized in that: The regenerative module includes a liquid storage top plate, a connecting plate, an upper top plate, multiple stacked heat exchange plates, and a lower bottom plate, which are sequentially stacked and brazed together; the lower bottom plate is fixedly connected to the intermediate connecting plate. The liquid storage chamber is located inside the liquid storage top plate; the refrigerant inlet, refrigerant high-pressure outlet, refrigerant low-pressure inlet, and refrigerant low-pressure outlet are all located on the liquid storage top plate; a circular tube is provided on the refrigerant inlet, and the circular tube passes through the intermediate connecting plate to connect the refrigerant inlet with the refrigerant channel.

4. The integrated plate heat exchanger according to claim 2, characterized in that: The water-cooled condensation module includes a bottom plate that is sequentially stacked and brazed into one piece, multiple heat exchange plates, an upper top plate, and an upper top plate connecting plate; the bottom plate is fixedly mounted on the intermediate connecting plate; the water inlet pipe and the water outlet pipe are mounted on the upper top plate connecting plate.

5. The integrated plate heat exchanger according to claim 1, characterized in that: The heat exchange fins are provided with concave and convex deformation areas, and two adjacent heat exchange fins are stacked alternately in opposite directions to form a heat exchange cavity in the middle; multiple through holes are provided around the heat exchange fins, and the heat exchange cavities formed between the multiple heat exchange fins are connected through the through holes to form two sets of alternating stacked channels, thereby forming the coolant channel and refrigerant channel in the water-cooled condensation module, and the refrigerant high-pressure channel and refrigerant low-pressure channel in the regeneration module.

6. The integrated plate heat exchanger according to claim 1, characterized in that: The drying bottle contains several desiccant particles, and the filter screen is detachably clipped onto the high-pressure outlet of the refrigerant.

7. The integrated plate heat exchanger according to claim 1, characterized in that: The drying bottle is detachably connected to the bracket via threads.

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