Plate heat exchanger

Abstract

The utility model belongs to the technical field of heat exchange, and discloses a plate heat exchanger. The plate heat exchanger comprises a heat exchange body, the heat exchange body is provided with a first channel and a second channel which are independent of each other, a first medium circulates in the first channel, a second medium circulates in the second channel, at least part of the first channel is in heat exchange connection with at least part of the second channel, and a drying and filtering assembly is arranged in the first channel. The drying and filtering assembly is used for drying and filtering the first medium. According to the plate heat exchanger, the stored liquid drying structure is integrated into the heat exchanger, the occupied space of the stored liquid drying structure is reduced, the occupied area of a heat exchange system is greatly reduced, and the problem of liquid leakage caused by sealing failure at a pipeline connector is solved. And the structure of the plate heat exchanger with the built-in liquid storage drying structure is simplified, the flow of the first medium in the heat exchange body is increased, and the heat exchange area and the heat exchange efficiency of the plate heat exchanger are improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a plate heat exchanger. Background Technology

[0002] With the increasing demand for thermal management in applications such as automobiles and base stations, the demand for thermal management systems is also constantly rising. Consequently, the performance requirements for components within thermal management systems are also continuously increasing.

[0003] Currently, refrigerant circulation loops often include various heat exchangers and liquid receiver-driers. Heat exchangers facilitate heat exchange between the two media, while liquid receiver-driers store, dry, and filter the refrigerant. Existing liquid receiver-driers require a separate piping system for storage, drying, and filtration, resulting in a large footprint and hindering system layout. Even when integrated into other structures, they significantly impact the performance of those structures and increase their footprint. Furthermore, the seals within the liquid receiver-drier often utilize O-rings, which pose a risk of fatigue failure. These issues are among the key constraints limiting the size of thermal management systems.

[0004] Therefore, there is an urgent need for a plate heat exchanger to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a plate heat exchanger that can integrate a liquid storage and drying structure, improve space utilization, and integrate the liquid storage and drying channel within the channel, so as to maintain good heat exchange area and heat exchange efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A plate heat exchanger includes a heat exchange body, which has a first channel and a second channel that are independent of each other. A first medium flows through the first channel, and a second medium flows through the second channel. At least a portion of the first channel and at least a portion of the second channel are heat exchanged. A drying and filtering assembly is provided in the first channel for drying and filtering the first medium.

[0008] Optionally, the aforementioned first channel includes:

[0009] Liquid storage channel, wherein the aforementioned drying and filtration assembly is provided;

[0010] The first liquid inlet channel and the liquid storage channel are arranged alternately, and the first liquid inlet channel is used for the inflow of the first medium.

[0011] The first liquid outlet channel is connected to the liquid storage channel; the first liquid outlet channel is used for the outflow of the first medium.

[0012] A plurality of first heat exchange channels are provided at intervals and connected to the second channel for heat exchange. At least a portion of the plurality of first heat exchange channels are connected between the first liquid inlet channel and the liquid storage channel, and the remaining portions of the plurality of first heat exchange channels are connected between the first liquid outlet channel and the liquid storage channel.

[0013] Optionally, the second channel mentioned above includes:

[0014] The second liquid inlet channel is independent of the first liquid inlet channel and is used for the inflow of the second medium.

[0015] The second liquid outlet channel is independent of the first liquid outlet channel and is used for the outflow of the second medium.

[0016] Multiple second heat exchange channels are provided, and the multiple second heat exchange channels are staggered and stacked with the multiple first heat exchange channels. The multiple second heat exchange channels are all connected and disposed between the second liquid inlet channel and the second liquid outlet channel.

[0017] Optionally, the heat exchange body includes a plurality of first heat exchange plates and a plurality of second heat exchange plates arranged in alternating sealed layers. Both the first heat exchange plates and the second heat exchange plates are provided with a heat exchange surface and a sealing surface along the stacking direction. A first heat exchange channel is formed between the heat exchange surface of the first heat exchange plate and the sealing surface of the second heat exchange plate, and a second heat exchange channel is formed between the heat exchange surface of the second heat exchange plate and the sealing surface of the first heat exchange plate.

[0018] Optionally, the first heat exchange plate and the second heat exchange plate are each provided with a first flow port, a second flow port, a third flow port and a fourth flow port respectively; at least some of the first flow ports are combined to form a first liquid inlet channel; the multiple second flow ports are combined to form a liquid storage channel; the multiple third flow ports are combined to form a second liquid inlet channel; and the multiple fourth flow ports are combined to form a second liquid outlet channel.

[0019] Optionally, the heat exchange surface of the first heat exchange plate is provided with a first protrusion along the circumference of the third flow port, and the heat exchange surface of the first heat exchange plate is provided with a second protrusion along the circumference of the fourth flow port. Both the first protrusion and the second protrusion are in sealing contact with the sealing surface of the adjacent second heat exchange plate.

[0020] The heat exchange surface of the second heat exchange plate is provided with a third protrusion along the circumference of the first flow port, and the heat exchange surface of the second heat exchange plate is provided with a fourth protrusion along the circumference of the second flow port. The third protrusion and the fourth protrusion are both sealed and abutted against the sealing surface of the adjacent first heat exchange plate.

[0021] Optionally, the first channel is a single-flow channel, the first liquid outlet channel and the liquid storage channel are coaxially connected, and multiple first heat exchange channels are connected between the first liquid inlet channel and the liquid storage channel. The first medium flows sequentially through the first liquid inlet channel, the multiple first heat exchange channels, the liquid storage channel, and the first liquid outlet channel; or,

[0022] The first channel is a dual-flow channel. The first liquid outlet channel and the first liquid inlet channel are coaxially arranged and independent of each other. A portion of the plurality of first heat exchange channels is connected between the first liquid inlet channel and the liquid storage channel, and another portion of the plurality of first heat exchange channels is connected between the first liquid outlet channel and the liquid storage channel. The first medium flows sequentially through the first liquid inlet channel, a portion of the plurality of first heat exchange channels, the liquid storage channel, another portion of the plurality of first heat exchange channels, and the first liquid outlet channel.

[0023] Optionally, the first flow port of any one of the plurality of first heat exchange plates is blocked to make the first channel a dual-flow channel.

[0024] Optionally, the first channel is connected to an inlet flange and an outlet flange, and the second channel is connected to an inlet pipe and an outlet pipe.

[0025] Optionally, the drying and filtering assembly includes a drying element and a filtering element, which are arranged sequentially along the flow direction of the first medium. The drying element is used to dry the first medium, and the filtering element is used to filter the first medium.

[0026] The beneficial effects of this utility model are:

[0027] This invention provides a plate heat exchanger that integrates a liquid storage and drying structure within the heat exchanger, reducing the space occupied by the liquid storage and drying structure and significantly decreasing the floor space of the heat exchange system. It also eliminates the need for piping connections between the plate heat exchanger and the liquid storage and drying tank, simplifying assembly and resolving leakage issues caused by seal failure at pipe joints. Furthermore, the heat exchanger body only requires increasing the volume of the first channel to house the drying and filtering components, eliminating the need for an additional liquid storage channel within the heat exchanger body. This allows for the integration of the liquid storage and drying structure, achieving the functions of liquid storage, drying, and filtration of the first medium. The structure is simple and compact, requiring minimal modifications to the heat exchanger body, simplifying the structure of plate heat exchangers with built-in liquid storage and drying structures, and increasing the flow rate of the first medium within the heat exchanger body, thereby improving the heat exchange area and efficiency of the plate heat exchanger. Attached Figure Description

[0028] Figure 1 This is an isometric view of a single-pass plate heat exchanger provided in a specific embodiment of this utility model;

[0029] Figure 2 This is a top view of a single-pass plate heat exchanger provided in a specific embodiment of this utility model;

[0030] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0031] Figure 4 This is a schematic diagram of the flow direction of the first medium in a single-pass plate heat exchanger provided in a specific embodiment of this utility model.

[0032] Figure 5 This is an isometric view of a dual-flow plate heat exchanger provided in a specific embodiment of this utility model.

[0033] Figure 6 This is a top view of the dual-flow plate heat exchanger provided in a specific embodiment of this utility model;

[0034] Figure 7 yes Figure 6 Cross-sectional view at point BB;

[0035] Figure 8 This is a schematic diagram of the flow direction of the first medium in the dual-flow plate heat exchanger provided in a specific embodiment of this utility model.

[0036] Figure 9 This is an isometric view of the first heat exchange plate provided in a specific embodiment of this utility model;

[0037] Figure 10 This is an isometric view of the second heat exchange plate provided in a specific embodiment of this utility model;

[0038] Figure 11 This is an isometric view of the blind plate provided in a specific embodiment of this utility model;

[0039] Figure 12 This is an isometric view of the dual-flow plate heat exchanger provided in a specific embodiment of this utility model.

[0040] Figure 13 This is an exploded view of the dual-flow plate heat exchanger provided in a specific embodiment of this utility model.

[0041] In the picture:

[0042] 10. Heat exchanger body; 101. Heat exchange surface; 102. First flow port; 103. Second flow port; 104. Third flow port; 105. Fourth flow port; 11. First heat exchange plate; 111. First flow channel groove; 112. First boss; 113. Second boss; 12. Second heat exchange plate; 121. Second flow channel groove; 122. Third boss; 123. Fourth boss; 13. Blind plate; 14. Top plate; 141. Mounting base; 15. Base plate;

[0043] 20. Drying and filtering assembly; 21. Drying element; 22. Filter element; 23. Plug; 24. Snap ring; 25. Sealing element;

[0044] 30. Inlet flange; 40. Outlet flange; 50. Inlet pipe; 60. Outlet pipe;

[0045] 100, First channel; 1001, Liquid storage channel; 1002, First liquid inlet channel; 1003, First liquid outlet channel; 1004, First heat exchange channel. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] The following reference Figures 1 to 13 This invention introduces the plate heat exchanger provided by this utility model.

[0051] Please refer to Figures 1 to 8 Specifically, the plate heat exchanger includes a heat exchange body 10, which has a first channel 100 and a second channel that are independent of each other. A first medium flows through the first channel 100 and a second medium flows through the second channel. At least a portion of the first channel 100 and at least a portion of the second channel are heat exchanged. A drying and filtering assembly 20 is provided in the first channel 100, which is used to dry and filter the first medium.

[0052] In this embodiment, the plate heat exchanger integrates the liquid storage and drying structure into the heat exchanger, reducing the space occupied by the liquid storage and drying structure and significantly reducing the floor area of ​​the heat exchange system. It also eliminates the need for piping connections between the plate heat exchanger and the liquid storage and drying tank, reducing assembly difficulty and solving the leakage problem caused by seal failure at pipe interfaces. Furthermore, the heat exchange body 10 only needs to increase the volume of the first channel 100 to place the drying and filtering assembly 20 within the first channel 100, without needing to add a liquid storage channel within the heat exchange body 10. This integrates the liquid storage and drying structure, achieving the functions of liquid storage, drying, and filtration of the first medium. The structure is simple and compact, requiring minimal modifications to the heat exchange body 10, simplifying the structure of the plate heat exchanger with the built-in liquid storage and drying structure. It also increases the flow rate of the first medium within the heat exchange body 10, thereby improving the heat exchange surface area 101 and heat exchange efficiency of the plate heat exchanger.

[0053] It should be noted that the first medium is a refrigerant, and the second medium is a heat exchange medium such as a coolant. The first medium and the second medium exchange heat to achieve the heat exchange function of the plate heat exchanger.

[0054] Please refer to Figure 3 and Figure 7 In this embodiment, the first channel 100 includes a liquid storage channel 1001, a first liquid inlet channel 1002, a first liquid outlet channel 1003, and a plurality of first heat exchange channels 1004. A drying and filtering assembly 20 is disposed within the liquid storage channel 1001; the first liquid inlet channel 1002 and the liquid storage channel 1001 are spaced apart, with the first liquid inlet channel 1002 used for the inflow of a first medium; the first liquid outlet channel 1003 is connected to the liquid storage channel 1001 and is used for the outflow of the first medium; the plurality of first heat exchange channels 1004 are spaced apart and heat-exchange connected to the second channel, with at least a portion of the plurality of first heat exchange channels 1004 connected between the first liquid inlet channel 1002 and the liquid storage channel 1001, and the remaining portions of the plurality of first heat exchange channels 1004 connected between the first liquid outlet channel 1003 and the liquid storage channel 1001. The first medium flows sequentially to the first inlet channel 1002, multiple first heat exchange channels 1004, liquid storage channel 1001 and first outlet channel 1003, thereby realizing the inflow and outflow, heat exchange, liquid storage, drying and filtration of the first medium.

[0055] Furthermore, the second channel includes a second inlet channel, a second outlet channel, and multiple second heat exchange channels. The second inlet channel is independent of the first inlet channel 1002 and is used for the inflow of the second medium. The second outlet channel is independent of the first outlet channel 1003 and is used for the outflow of the second medium. The multiple second heat exchange channels and multiple first heat exchange channels 1004 are staggered and stacked, and the multiple second heat exchange channels are all connected between the second inlet channel and the second outlet channel. The second medium flows sequentially to the second inlet channel, the multiple second heat exchange channels, and the second outlet channel, thereby realizing the inflow and outflow of the second medium and heat exchange.

[0056] Please refer to Figure 1 and Figure 4 Specifically, the heat exchange body 10 includes a plurality of first heat exchange plates 11 and a plurality of second heat exchange plates 12 arranged in alternating sealed layers. The first heat exchange plates 11 and the second heat exchange plates 12 are provided with heat exchange surfaces 101 and sealing surfaces along the stacking direction. A first heat exchange channel 1004 is formed between the heat exchange surface 101 of the first heat exchange plate 11 and the sealing surface of the second heat exchange plate 12, and a second heat exchange channel is formed between the heat exchange surface 101 of the second heat exchange plate 12 and the sealing surface of the first heat exchange plate 11, thereby realizing heat exchange between the first medium in the first heat exchange channel 1004 and the second medium in the second heat exchange channel.

[0057] Please refer to Figure 9 and Figure 10 More specifically, the heat exchange surface 101 of the first heat exchange plate 11 is provided with a first flow channel groove 111, and the heat exchange surface 101 of the second heat exchange plate 12 is provided with a second flow channel groove 121, so as to realize the flow of the first medium and the second medium.

[0058] Optionally, the shape of the first flow channel 111 and the shape of the second flow channel 121 can be V-shaped, W-shaped, dotted, or finned, all of which can achieve the flow of the medium, and no specific limitation is made here.

[0059] Optionally, both the outer periphery of the first heat exchange plate 11 and the outer periphery of the second heat exchange plate 12 are provided with annular protrusions. The annular protrusions protrude outward from the heat exchange surface 101. When the first heat exchange plate 11 and the second heat exchange plate 12 are stacked together, a sealed structure with heat exchange channels can be formed.

[0060] Specifically, the first heat exchange plate 11 and the second heat exchange plate 12 are each provided with a first flow port 102, a second flow port 103, a third flow port 104 and a fourth flow port 105 respectively; at least some of the first flow ports 102 are combined to form a first liquid inlet channel 1002; the multiple second flow ports 103 are combined to form a liquid storage channel 1001; the multiple third flow ports 104 are combined to form a second liquid inlet channel; and the fourth flow port 105 are combined to form a second liquid outlet channel, thereby realizing the inflow and outflow of the first medium and the second medium.

[0061] More specifically, the heat exchange surface 101 of the first heat exchange plate 11 is provided with a first protrusion 112 along the circumference of the third flow port 104, and the heat exchange surface 101 of the first heat exchange plate 11 is provided with a second protrusion 113 along the circumference of the fourth flow port 105. The first protrusion 112 and the second protrusion 113 are both sealed and abutted against the sealing surface of the adjacent second heat exchange plate 12. This indicates that, due to the arrangement of the first protrusion 112 and the second protrusion 113, the first flow channel groove 111 of the first heat exchange plate 11 is only connected to the first flow port 102 and the second flow port 103, so that the first heat exchange flow channel 1004 can only be connected to the first liquid inlet flow channel 1002 and the liquid storage flow channel 1001.

[0062] Furthermore, the heat exchange surface 101 of the second heat exchange plate 12 is provided with a third protrusion 122 along the circumference of the first flow port 102, and the heat exchange surface 101 of the second heat exchange plate 12 is provided with a fourth protrusion 123 along the circumference of the second flow port 103. Both the third protrusion 122 and the fourth protrusion 123 are in sealing contact with the sealing surface of the adjacent first heat exchange plate 11. This indicates that, due to the arrangement of the third protrusion 122 and the fourth protrusion 123, the second flow channel groove 121 of the second heat exchange plate 12 is only connected to the third flow port 104 and the fourth flow port 105, so that the second heat exchange flow channel can only be connected to the second liquid inlet flow channel and the second liquid outlet flow channel.

[0063] The above configuration makes the first channel 100 and the second channel independent of each other and does not interfere with each other, and can realize the heat exchange connection between the first heat exchange channel 1004 and the second heat exchange channel.

[0064] In this embodiment, the first channel 100 can be a single-pass channel or a dual-pass channel, so that the plate heat exchanger can be a single-pass heat exchanger or a dual-pass heat exchanger.

[0065] Please refer to Figures 1 to 4 Optionally, the first channel 100 is a single-flow channel, with the first liquid outlet channel 1003 and the liquid storage channel 1001 coaxially connected. Multiple first heat exchange channels 1004 are connected between the first liquid inlet channel 1002 and the liquid storage channel 1001. The first medium flows sequentially through the first liquid inlet channel 1002, the multiple first heat exchange channels 1004, the liquid storage channel 1001, and the first liquid outlet channel 1003. This achieves single-flow heat exchange for the first medium, meaning that the flow direction of the first medium in each of the first heat exchange channels 1004 is the same. They all flow in from the first liquid inlet channel 1002, pass through the liquid storage channel 1001, and then flow out from the first liquid outlet channel 1003.

[0066] Specifically, the first channel 100 is a single-flow channel, the first liquid outlet channel 1003 and the liquid storage channel 1001 are coaxially arranged, and the first liquid outlet channel 1003 and the liquid storage channel 1001 are separated by the drying filter assembly 20, so that the plate heat exchanger does not need to open a corresponding flow channel hole to realize the flow of the first medium.

[0067] Please refer to Figures 5 to 8Optionally, the first channel 100 is a dual-flow channel. The first liquid outlet channel 1003 and the first liquid inlet channel 1002 are coaxially arranged and independent of each other. A portion of the plurality of first heat exchange channels 1004 is connected between the first liquid inlet channel 1002 and the liquid storage channel 1001, and another portion of the plurality of first heat exchange channels 1004 is connected between the first liquid outlet channel 1003 and the liquid storage channel 1001. The first medium flows sequentially through the first liquid inlet channel 1002, a portion of the plurality of first heat exchange channels 1004, the liquid storage channel 1001, the other portion of the plurality of first heat exchange channels 1004, and the first liquid outlet channel 1002. 3; This enables dual-flow heat exchange of the first medium. Furthermore, after the first medium undergoes heat exchange once, it is dried and filtered before undergoing a second heat exchange, thus realizing the subcooling mode of the plate heat exchanger and further improving its heat exchange efficiency. Specifically, the multiple first heat exchange channels 1004 are divided into two groups. The flow direction of the first medium in each group is the same, but the flow direction of the first medium in the two groups is opposite. Specifically, the first medium flowing in from the first inlet channel 1002 passes through a portion of the multiple first heat exchange channels 1004, then through the storage channel 1001, and then through the remaining first heat exchange channels 1004 to flow out from the first outlet channel 1003.

[0068] Please refer to Figure 11 Specifically, the first flow port 102 of any one of the multiple first heat exchange plates 11 is blocked to form a blind plate 13. This arrangement allows a portion of the multiple first heat exchange plates 11 to serve as the first liquid inlet channel 1002 and another portion to serve as the first liquid outlet channel 1003. That is, a portion of the first flow port 102 of the heat exchange body 10 forms the first liquid inlet channel 1002 and another portion forms the first liquid outlet channel 1003, separated by the blind plate 13. This achieves dual-flow heat exchange of the first channel 100 of the plate heat exchanger without adding other structures or channels, simplifying the structure of the plate heat exchanger.

[0069] Please refer to Figure 12 and Figure 13 Furthermore, the heat exchange body 10 also includes a top plate 14 and a bottom plate 15. The top plate 14 and the bottom plate 15 are respectively disposed on both sides of the stacked first heat exchange plates 11 and second heat exchange plates 12 to seal the stacked first heat exchange plates 11 and second heat exchange plates 12. The arrangement of the top plate 14 and the bottom plate 15 also connects each flow port to the outside on one side and seals the other side of each flow port to realize the flow in and out of the first channel 100 and the second channel.

[0070] Furthermore, the first channel 100 is connected to an inlet flange 30 and an outlet flange 40 to allow the first medium to flow in and out; the second channel is connected to an inlet pipe 50 and an outlet pipe 60 to allow the second medium to flow in and out. Specifically, the inlet flange 30, the outlet flange 40, the inlet pipe 50, and the outlet pipe 60 are each mounted on the top plate 14 or the bottom plate 15 to allow the inlet flange 30 to connect with the first flow port 102, the outlet flange 40 to connect with the second flow port 103 or the first flow port 102, the inlet pipe 50 to connect with the third flow port 104, and the outlet pipe 60 to connect with the fourth flow port 105, thereby enabling the flow of the first medium in the first channel 100 and the flow of the second medium in the second channel.

[0071] Specifically, the inlet flange 30, inlet pipe 50, and outlet pipe 60 are all mounted on the base plate 15. Through holes are provided on the base plate 15 at positions corresponding to the first flow port 102, the third flow port 104, and the fourth flow port 105, to allow the inlet flange 30 to connect with the first flow port 102, the inlet pipe 50 with the third flow port 104, and the outlet pipe 60 with the fourth flow port 105. The outlet flange 40 is mounted on the top plate 14, and through holes are provided on the top plate 14 at positions corresponding to the second flow port 103 or the first flow port 102, to allow the outlet flange 40 to connect with the second flow port 103.

[0072] Of course, when the first channel 100 is a single-flow channel, the outlet flange 40 is correspondingly set with the second flow port 103, that is, a through hole is opened on the top plate 14 at the position corresponding to the second flow port 103. When the first channel 100 is a dual-flow channel, the outlet flange 40 is correspondingly set with the first flow port 102, that is, a through hole is opened on the top plate 14 at the position corresponding to the first flow port 102.

[0073] Please continue to refer to Figure 12 and Figure 13 In this embodiment, the drying and filtering assembly 20 includes a drying element 21 and a filtering element 22, which are arranged sequentially along the flow direction of the first medium. The drying element 21 is used to dry the first medium, and the filtering element 22 is used to filter the first medium.

[0074] Optionally, the drying element 21 can be a drying bag or the like, which dries the first medium that comes into contact with it; the filter element 22 can be a filter screen or the like, which filters the first medium after it has been dried, and there are no specific limitations here.

[0075] Optionally, the top plate 14 is also provided with a mounting base 141 corresponding to the second flow port 103 to realize the installation of the drying filter assembly 20.

[0076] Specifically, the drying and filtering assembly 20 also includes a plug 23, the filter element 22 is clamped and fixed to the top plate 14, the drying element 21 is disposed in the liquid storage channel 1001, and the plug 23 is sealed to the mounting base 141 to seal the filter element 22 and the drying element 21 in the liquid storage channel 1001, thereby achieving the sealed installation of the drying and filtering assembly 20.

[0077] Optionally, in this embodiment, the mounting base 141 is provided with a threaded hole, and the plug 23 is sealed and threadedly connected to the threaded hole, thereby achieving the fixation between the plug 23 and the mounting base 141.

[0078] Of course, the mounting base 141 may also have a mounting hole, and a retaining spring 24 may be provided on the outer periphery of the plug 23 to achieve a sealed fixation between the plug 23 and the mounting hole of the mounting base 141.

[0079] More specifically, the outer periphery of the plug 23 is also provided with a seal 25, which is used to seal between the plug 23 and the corresponding threaded hole or mounting hole.

[0080] It should be noted that when the first channel 100 is a single-flow channel, the plug 23 has a channel hole to form a first liquid outlet channel 1003 for the first medium to flow out, so there is no need to set up a separate liquid outlet flange 40.

[0081] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A plate heat exchanger, characterized in that, The device includes a heat exchange body (10), which has a first channel (100) and a second channel that are independent of each other. A first medium flows through the first channel (100), and a second medium flows through the second channel. At least a portion of the first channel (100) and at least a portion of the second channel are heat-exchange connected. A drying and filtering assembly (20) is provided in the first channel (100) for drying and filtering the first medium.

2. The plate heat exchanger according to claim 1, characterized in that, The first channel (100) includes: A liquid storage channel (1001) is provided with the drying and filtering assembly (20) inside the liquid storage channel (1001); The first liquid inlet channel (1002) and the liquid storage channel (1001) are arranged at intervals, and the first liquid inlet channel (1002) is used for the inflow of the first medium; A first liquid outlet channel (1003) is connected to the liquid storage channel (1001); the first liquid outlet channel (1003) is used for the outflow of the first medium; A plurality of first heat exchange channels (1004) are provided at intervals and are heat exchanged with the second channel. At least a portion of the plurality of first heat exchange channels (1004) are connected between the first liquid inlet channel (1002) and the liquid storage channel (1001), and the remaining portion of the plurality of first heat exchange channels (1004) are connected between the first liquid outlet channel (1003) and the liquid storage channel (1001).

3. The plate heat exchanger according to claim 2, characterized in that, The second channel includes: The second liquid inlet channel is independent of the first liquid inlet channel (1002) and is used for the inflow of the second medium. The second liquid outlet channel is independent of the first liquid outlet channel (1003) and is used for the outflow of the second medium. Multiple second heat exchange channels are arranged in an alternating and stacked manner with multiple first heat exchange channels (1004), and the multiple second heat exchange channels are all connected and arranged between the second liquid inlet channel and the second liquid outlet channel.

4. The plate heat exchanger according to claim 3, characterized in that, The heat exchange body (10) includes a plurality of first heat exchange plates (11) and a plurality of second heat exchange plates (12) arranged in alternating sealed layers. The first heat exchange plates (11) and the second heat exchange plates (12) are provided with a heat exchange surface (101) and a sealing surface along the stacking direction. A first heat exchange channel (1004) is formed between the heat exchange surface (101) of the first heat exchange plate (11) and the sealing surface of the second heat exchange plate (12), and a second heat exchange channel is formed between the heat exchange surface (101) of the second heat exchange plate (12) and the sealing surface of the first heat exchange plate (11).

5. The plate heat exchanger according to claim 4, characterized in that, The first heat exchange plate (11) and the second heat exchange plate (12) are each provided with a first flow port (102), a second flow port (103), a third flow port (104) and a fourth flow port (105) respectively; at least some of the first flow ports (102) are combined to form a first liquid inlet channel (1002); the multiple second flow ports (103) are combined to form a liquid storage channel (1001); the multiple third flow ports (104) are combined to form a second liquid inlet channel; and the fourth flow ports (105) are combined to form a second liquid outlet channel.

6. The plate heat exchanger according to claim 5, characterized in that, The heat exchange surface (101) of the first heat exchange plate (11) is provided with a first boss (112) along the circumference of the third flow port (104), and the heat exchange surface (101) of the first heat exchange plate (11) is provided with a second boss (113) along the circumference of the fourth flow port (105). The first boss (112) and the second boss (113) are both sealed and abutted against the sealing surface of the adjacent second heat exchange plate (12). The heat exchange surface (101) of the second heat exchange plate (12) is provided with a third protrusion (122) along the circumference of the first flow port (102), and the heat exchange surface (101) of the second heat exchange plate (12) is provided with a fourth protrusion (123) along the circumference of the second flow port (103). The third protrusion (122) and the fourth protrusion (123) are both sealed and abutted against the sealing surface of the adjacent first heat exchange plate (11).

7. The plate heat exchanger according to claim 5, characterized in that, The first channel (100) is a single-flow channel. The first liquid outlet channel (1003) and the liquid storage channel (1001) are coaxially connected. Multiple first heat exchange channels (1004) are connected between the first liquid inlet channel (1002) and the liquid storage channel (1001). The first medium flows sequentially through the first liquid inlet channel (1002), the multiple first heat exchange channels (1004), the liquid storage channel (1001), and the first liquid outlet channel (1003); or, The first channel (100) is a dual-flow channel. The first liquid outlet channel (1003) and the first liquid inlet channel (1002) are coaxially arranged and independent of each other. A portion of the plurality of first heat exchange channels (1004) are connected between the first liquid inlet channel (1002) and the liquid storage channel (1001), and another portion of the plurality of first heat exchange channels (1004) are connected between the first liquid outlet channel (1003) and the liquid storage channel (1001). The first medium flows sequentially through the first liquid inlet channel (1002), a portion of the plurality of first heat exchange channels (1004), the liquid storage channel (1001), another portion of the plurality of first heat exchange channels (1004), and the first liquid outlet channel (1003).

8. The plate heat exchanger according to claim 7, characterized in that, The first flow port (102) of any one of the plurality of first heat exchange plates (11) is blocked so that the first channel (100) is a dual flow channel.

9. The plate heat exchanger according to claim 1, characterized in that, The first channel (100) is connected to an inlet flange (30) and an outlet flange (40), and the second channel is connected to an inlet pipe (50) and an outlet pipe (60).

10. The plate heat exchanger according to any one of claims 1-9, characterized in that, The drying and filtering assembly (20) includes a drying element (21) and a filtering element (22). The drying element (21) and the filtering element (22) are arranged sequentially along the flow direction of the first medium. The drying element (21) is used to dry the first medium, and the filtering element (22) is used to filter the first medium.

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