Plate heat exchanger

Abstract

The utility model provides a plate heat exchanger, relates to heat exchange equipment technical field, including heat exchange plate group and reinforcer, heat exchange plate group includes a plurality of heat exchange plate, the heat exchange plate that is located the outermost side of heat exchange plate group is the first plate, the outer surface of first plate includes corrugation area and communication area, the corrugation area has corrugation structure, and the communication area has the intercommunication area. At least part of the corrugated structure protrudes out of the communication area; the reinforcing piece is arranged in the communicating area, and the vertex of the protruding part of the corrugated structure and the top wall, parallel to the communicating area, of the reinforcing piece are located on the same plane in the stacking direction of the heat exchange plates. According to the utility model, by controlling the thickness of the reinforcer, the top point of the convex part of the corrugated structure and the top wall, parallel to the communicating area, of the reinforcer can be positioned on the same plane, and at the moment, uniform pressure can be applied to the first sheet bar through a single weight bearing block, so that the problem of missing welding caused by non-uniform pressure is reduced; and the service life and durability of the plate heat exchanger are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a plate heat exchanger. Background Art

[0002] A plate heat exchanger is usually composed of a plurality of stacked heat exchange plates, and inter-plate channels can be formed between adjacent heat exchange plates, so that different heat exchange media can exchange heat using the isolated inter-plate channels. In addition, increasing the number of stacked heat exchange plates is conducive to improving the heat exchange efficiency of the plate heat exchanger. However, as the number of heat exchange plates increases, the difficulty of welding between the heat exchange plates also increases. This is because: in the process of stacking and welding multiple heat exchange plates, each heat exchange plate needs to be evenly pressed. Therefore, in order to improve the welding uniformity of the plate heat exchanger, it is necessary to use a weight block to evenly press the entire plate heat exchanger along the stacking direction, and then weld each heat exchange plate. In addition, in the prior art, in order to increase the heat exchange area of ​​the heat exchange plate, a corrugated structure is set in some areas on the heat exchange plate. Since the corrugated structure has a convex part, it is difficult for a single weight block to evenly press the entire heat exchange plate, so it is necessary to use multiple weight blocks to cooperate to press the entire heat exchange plate. Although multiple weight blocks can improve the pressure uniformity of the plate heat exchanger, the use of multiple weight blocks also increases the difficulty of pressure balance, and the pressure distribution between multiple weight blocks is prone to unevenness, resulting in welding leaks in some areas of the plate heat exchanger, thereby reducing the service life and durability of the plate heat exchanger. Therefore, how to improve the pressure uniformity of the plate heat exchanger to improve the welding quality has become a technical problem that needs to be solved urgently. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present utility model is to provide a plate heat exchanger for improving the uniformity of pressure to improve the welding quality.

[0004] The above-mentioned purpose of the utility model can be achieved by adopting the following technical solutions. The utility model provides a plate heat exchanger, including:

[0005] A heat exchange plate group, the heat exchange plate group includes a plurality of stacked heat exchange plates, a first heat exchange channel for a first heat exchange medium to flow and a second heat exchange channel for a second heat exchange medium to flow are formed inside the heat exchange plate group, the first heat exchange channel and the second heat exchange channel are isolated from each other, one of the heat exchange plates located at the outermost side of the heat exchange plate group is a first plate, the first plate is provided with at least a first inlet and a first outlet communicating with the first heat exchange channel, and a second inlet and a second outlet communicating with the second heat exchange channel, the outer surface of the first plate includes a corrugated area and a communicating area, the first inlet and / or the first outlet and / or the second inlet and / or the second outlet are arranged in the communicating area, the corrugated area has a corrugated structure, and at least part of the corrugated structure protrudes from the communicating area;

[0006] A reinforcement member is arranged in the communication area, and along the stacking direction of the heat exchange plates, the highest point of the raised part of the corrugated structure is in the same plane as the top wall of the reinforcement member parallel to the communication area.

[0007] In a preferred embodiment of the present invention, the corrugated structure includes a plurality of alternately arranged wave crests and wave troughs, and the wave crests protrude from the connecting area to form the protruding portion.

[0008] In a preferred embodiment of the present invention, the reinforcement member includes a reinforcement plate, which is arranged in the communication area and surrounds the first inlet and / or the first outlet and / or the second inlet and / or the second outlet.

[0009] In a preferred embodiment of the present invention, the reinforcing plate covers the connecting area.

[0010] In a preferred embodiment of the present invention, the reinforcement is fixedly connected to the first plate.

[0011] In a preferred embodiment of the present invention, the reinforcement and the first plate are fixed by brazing.

[0012] In a preferred embodiment of the present invention, the communication area includes a first communication area and a second communication area, the first communication area is formed with the first inlet and the second outlet, and the second communication area is formed with the first outlet and the second inlet.

[0013] In a preferred embodiment of the present invention, the first communication area and the second communication area are respectively arranged on both sides of the first plate, and the corrugated area is arranged between the first communication area and the second communication area.

[0014] In a preferred embodiment of the present invention, the edge of the first communication area and / or the edge of the second communication area is connected to the edge of the corrugated area.

[0015] In a preferred embodiment of the present invention, the plate heat exchanger further comprises a connection structure, and the connection structure is arranged on the first plate and / or the reinforcement.

[0016] In a preferred embodiment of the present invention, the connection structure is arranged on the top wall of the reinforcement member, and the connection structure is fixedly connected to the reinforcement member.

[0017] In a preferred embodiment of the present invention, the connection structure includes at least one connection stud.

[0018] In a preferred embodiment of the present invention, the communication area includes a first communication area and a second communication area, and the connection structure is provided on the first communication area and / or the second communication area.

[0019] In a preferred embodiment of the present invention, a third heat exchange channel for a third heat exchange medium to flow is formed inside the heat exchange plate group, and the third heat exchange channel is isolated from the first heat exchange channel and the second heat exchange channel. The first plate is also provided with a third inlet and a third outlet connected to the third heat exchange channel, and the third inlet and / or the third outlet are arranged in the connecting area.

[0020] The technical solution of the utility model has the following significant beneficial effects:

[0021] In the plate heat exchanger of the utility model, the heat exchange plate group includes a plurality of stacked heat exchange plates, and the inter-plate channels between the heat exchange plates can form a first heat exchange channel for the flow of a first heat exchange medium and a second heat exchange channel for the flow of a second heat exchange medium, so that the first heat exchange medium and the second heat exchange medium can exchange heat. In addition, one of the heat exchange plates located at the outermost side of the heat exchange plate group is a first plate, and a corrugated area and a connecting area are provided on the first plate, and the corrugated area is conducive to increasing the heat exchange area of ​​the first plate.

[0022] However, since the corrugated area has a corrugated structure, the raised part of the corrugated structure will protrude from the connecting area, making it difficult for the weight block to apply uniform pressure to the entire first plate. In order to solve this problem, the utility model provides a reinforcement member in the connecting area of ​​the first plate, and by controlling the thickness of the reinforcement member, the apex of the raised part of the corrugated structure can be in the same plane as the top wall of the connecting area parallel to the reinforcement member. At this time, a single weight block can apply uniform pressure to the first plate, thereby reducing the problem of welding leaks caused by uneven pressure, which is beneficial to improving the service life and durability of the plate heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0025] Figure 1 This is a schematic diagram of the exploded structure of an embodiment of the plate heat exchanger of the utility model;

[0026] Figure 2 A side cross-sectional view of an embodiment of the plate heat exchanger of the utility model;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of an embodiment of the plate heat exchanger of the utility model;

[0028] Figure 4 It is a side cross-sectional view of an embodiment of the corrugated structure of the utility model.

[0029] Reference numerals in the above drawings:

[0030] 10. Corrugated area;

[0031] 20. connected area; 21. first connected area; 22. second connected area;

[0032] 100, heat exchange plate group; 110, heat exchange plate; 111, first plate; 112, first inlet; 113, first outlet; 114, second inlet; 115, second outlet; 120, corrugated structure; 121, crest; 1211, apex; 122, trough;

[0033] 200, reinforcement member; 210, reinforcement plate; 211, top wall;

[0034] 300. Connection structure; 310. Connection studs. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, a plate heat exchanger is provided in an embodiment of the utility model, which includes a heat exchange plate group 100 and a reinforcement member 200. The heat exchange plate group 100 includes a plurality of stacked heat exchange plates 110. A first heat exchange channel for a first heat exchange medium to flow and a second heat exchange channel for a second heat exchange medium to flow are formed inside the heat exchange plate group 100. The first heat exchange channel and the second heat exchange channel are isolated from each other.

[0037] One of the heat exchange plates 110 located at the outermost side of the heat exchange plate group 100 is a first plate 111. The first plate 111 is provided with at least a first inlet 112 and a first outlet 113 connected to the first heat exchange channel, and a second inlet 114 and a second outlet 115 connected to the second heat exchange channel. The outer surface of the first plate 111 includes a corrugated area 10 and a connecting area 20. The first inlet 112 and / or the first outlet 113 and / or the second inlet 114 and / or the second outlet 115 are arranged in the connecting area 20, and the corrugated area 10 has a corrugated structure 120.

[0038] The reinforcement 200 is arranged in the connecting area 20. Along the stacking direction of the heat exchange plates 110, at least part of the corrugated structure 120 protrudes from the connecting area 20. The apex 1211 of the protruding part of the corrugated structure 120 is in the same plane as the top wall 211 of the reinforcement 200 parallel to the connecting area 20.

[0039] In general, the heat exchange plate group 100 includes a plurality of stacked heat exchange plates 110, and the inter-plate channels between the heat exchange plates 110 can form a first heat exchange channel for the flow of the first heat exchange medium and a second heat exchange channel for the flow of the second heat exchange medium, so that the first heat exchange medium and the second heat exchange medium can exchange heat. In addition, one of the heat exchange plates 110 located at the outermost side of the heat exchange plate group 100 is a first plate 111, and a corrugated area 10 and a connecting area 20 are provided on the first plate 111, and the corrugated area 10 is conducive to increasing the heat exchange area of ​​the first plate 111.

[0040] However, since the corrugated area 10 has a corrugated structure 120, the raised portion of the corrugated structure 120 will protrude from the connecting area 20, making it difficult for the weight block to uniformly apply pressure to the entire first plate 111. In order to solve this problem, the utility model is provided with a reinforcement 200 in the connecting area 20 of the first plate 111, and by controlling the thickness of the reinforcement 200, the apex 1211 of the raised portion of the corrugated structure 120 can be in the same plane as the top wall 211 of the connecting area 20 of the reinforcement 200, and at this time, a single weight block can uniformly apply pressure to the first plate 111, thereby reducing the problem of leaking welds caused by uneven pressure, which is beneficial to improving the service life and durability of the plate heat exchanger.

[0041] like Figure 4 The same plane means that the apex 1211 of the protruding portion and the top wall 211 of the reinforcing member 200 are at the same height. It should be noted that the "same height" here is not limited to the absolute same height of the two, but may also be that there is a certain processing tolerance between the heights of the two, and within the processing tolerance range, the two can be considered to be in the same plane.

[0042] The apex 1211 of the raised portion can be understood as follows: the number of raised portions can be multiple, and the corresponding raised portion can have multiple apex 1211, and it can be generally considered that the multiple apex 1211 has the same height in the stacking direction of the heat exchange plate 110. It should be noted that the "same height" here is not limited to the height of all apex 1211 must be absolutely the same, and it can also be that there is a certain processing tolerance between the heights of multiple apex 1211, and the heights of multiple apex 1211 can be considered to be the same within the processing tolerance range.

[0043] The top wall 211 of the reinforcement 200 can be understood as follows: without limiting the shape of the reinforcement 200, the "top wall 211" here is considered to be the reinforcement 200 parallel to the outer wall of the communication area 20. It should be noted that the "parallel" here is not limited to the top wall 211 of the reinforcement 200 being absolutely parallel to the communication area 20, and it can also be that there is a certain tolerance caused by processing between the top wall 211 of the reinforcement 200 and the communication area 20, and within the processing tolerance range, the top wall 211 of the reinforcement 200 can be considered to be parallel to the communication area 20.

[0044] The purpose of setting the communication area 20 on the first plate 111 is that the communication area 20 has a flat end surface, so that it is convenient to set each inlet and each outlet in the communication area 20, thereby reducing the difficulty of processing and manufacturing.

[0045] In an embodiment of the present invention, the corrugated structure 120 includes a plurality of alternately arranged wave crests 121 and wave troughs 122 , and the wave crests 121 protrude from the connecting area 20 to form a protruding portion.

[0046] By setting a plurality of crests 121 and troughs 122 in the corrugated area 10, the crests 121 and troughs 122 are used to increase the heat exchange area of ​​the heat exchange plate 110, thereby improving the heat exchange efficiency of the plate heat exchanger. The designer can adjust the specific number and structure of the crests 121 and troughs 122 according to the use requirements, and no specific restrictions are made here.

[0047] When the wave crest 121 protrudes from the connecting area 20 , the wave crest 121 forms a raised portion. There is a height difference between the raised portion and the connecting area 20 , which makes it difficult for the load-bearing block to press down the entire first plate 111 .

[0048] In order to solve this problem, the present application provides a reinforcement 200 in the connecting area 20. The reinforcement 200 can compensate for the height of the connecting area 20, so that the vertex 1211 of the raised part of the corrugated structure 120 and the top wall 211 of the connecting area 20 parallel to the reinforcement 200 are in the same plane, so that a single load block can be evenly pressed on the reinforcement 200 and the corrugated structure 120, thereby improving the uniformity of pressure on the heat exchange plate group 100, preventing or reducing the problem of welding leaks in the heat exchange plate group 100, and thus improving the welding quality of the heat exchange plate group 100.

[0049] In an embodiment of the present invention, the reinforcement member 200 includes a reinforcement plate 210 , which is disposed in the communication area 20 and surrounds the first inlet 112 and / or the first outlet 113 and / or the second inlet 114 and / or the second outlet 115 .

[0050] By setting the reinforcing plate 210 in the connecting area 20, the reinforcing plate 210 parallel to the top wall 211 of the connecting area 20 can be in the same plane as the apex 1211 of the raised portion of the corrugated structure 120, and the weight blocks can be evenly pressed onto the reinforcing plate 210 and the corrugated structure 120, thereby reducing the number of weight blocks required for welding and helping to reduce the jitter between the heat exchange plates 110.

[0051] By arranging the reinforcing plate 210 on the first plate 111, the uniformity of the welding points between the heat exchange plates 110 is improved, so that the domestic water fatigue life of the heat exchange plate group 100 is increased from 20,000 to 30,000 times to more than 100,000 times.

[0052] Furthermore, by disposing the reinforcing plate 210 around each inlet and / or each outlet, the reinforcing plate 210 will not interfere with the use of the inlet and the outlet, so that each inlet and each outlet can better transport the heat exchange medium.

[0053] The designer can adjust the specific shape and structure of the reinforcing plate 210 according to the use requirements, and no specific limitation is made here. Preferably, a plurality of through holes are provided on the reinforcing plate 210 corresponding to each inlet and each outlet, and each inlet and each outlet are connected by the through holes to avoid affecting the flow of the heat exchange medium.

[0054] In the embodiment of the present invention, the reinforcing plate 210 covers the connecting area 20. By making the reinforcing plate 210 cover the connecting area 20, the reinforcing plate 210 can evenly transfer the pressure to the connecting area 20, which is beneficial to improve the pressure uniformity of the heat exchange plate group 100, thereby improving the subsequent welding quality.

[0055] Of course, in other feasible embodiments, designers can adjust the coverage of the reinforcing plate 210 according to usage requirements. For example, the reinforcing plate 210 can cover part of the connecting area 20, and no specific limitation is made here.

[0056] In the embodiment of the present invention, the reinforcing member 200 is fixedly connected to the first plate 111. By fixing the reinforcing member 200 to the first plate 111, the connection stability between the reinforcing plate 210 and the first plate 111 is improved, and the displacement of the reinforcing plate 210 during the compression process is avoided.

[0057] In a specific embodiment, the reinforcing member 200 and the first plate 111 are fixed by brazing. Brazing is a welding method in which a solder having a lower melting point than the weldment and the weldment are heated to the melting temperature of the solder at the same time, and then the gap between the weldments is filled with liquefied solder to connect the weldments. The designer can adjust the specific solder used for brazing according to the use requirements, and no specific limitation is made here.

[0058] The reinforcement 200 and the first plate 111 are fixed by brazing, which is beneficial to reducing or eliminating the gap between the reinforcement 200 and the first plate 111, so that the reinforcement 200 can be more stably connected to the first plate 111.

[0059] Furthermore, by reducing or eliminating the gap between the reinforcement member 200 and the first plate 111 , when the reinforcement member 200 is under pressure, the reinforcement member 200 is not easily deformed, so that the reinforcement member 200 can evenly transfer the pressure to the communication area 20 .

[0060] In the embodiment of the present utility model, the communication area 20 includes a first communication area 21 and a second communication area 22 . The first communication area 21 is formed with a first inlet 112 and a second outlet 115 , and the second communication area 22 is formed with a first outlet 113 and a second inlet 114 .

[0061] By setting the first connecting area 21 and the second connecting area 22, and setting each inlet and each outlet on the first connecting area 21 and the second connecting area 22 respectively, the flow directions of the first heat exchange channel and the second heat exchange channel can be set in the opposite direction or in the same direction, which helps to improve the heat exchange efficiency between the first heat exchange medium and the second heat exchange medium.

[0062] In a feasible embodiment, the first communication area 21 and the second communication area 22 are respectively arranged on both sides of the first plate 111, and the corrugated area 10 is arranged between the first communication area 21 and the second communication area 22. In addition, the reinforcement member 200 may include two reinforcement plates 210 correspondingly arranged on the first communication area 21 and the second communication area 22.

[0063] By arranging the first communication area 21 and the second communication area 22 on both sides of the first plate 111 respectively, the first heat exchange channel and the second heat exchange channel can be maximally extended in the heat exchange plate assembly 100, which helps to improve the heat exchange efficiency.

[0064] Furthermore, by arranging the first inlet 112 and the second outlet 115 on the first communication area 21 and arranging the first outlet 113 and the second inlet 114 on the second communication area 22, stress problems caused by concentrated distribution of the inlets and outlets can be avoided.

[0065] Of course, in other feasible embodiments, the designer can adjust the specific shapes and locations of the first communication area 21 and the second communication area 22 according to the use requirements, and no specific limitation is made here. Preferably, the first communication area 21 and the second communication area 22 are symmetrically or substantially symmetrically arranged on the first plate 111.

[0066] In a feasible embodiment of the present invention, the edge of the first communication area 21 is connected to the edge of the corrugated area 10. By connecting the first communication area 21 to the edge of the corrugated area 10, when the reinforcing plate 210 is covered on the first communication area 21, the reinforcing plate 210 on the first communication area 21 can also be connected to the edge of the corrugated area 10.

[0067] By connecting the reinforcing plate 210 on the first connecting area 21 to the edge of the corrugated area 10, it helps to reduce or eliminate the gap between the reinforcing plate 210 on the first connecting area 21 and the corrugated structure 120 on the corrugated area 10, so that the weight block can be continuously crimped onto the reinforcing plate 210 and the corrugated structure 120 on the first connecting area 21, which helps to improve the uniformity of pressure on the reinforcing plate 210 and the corrugated structure 120 on the first connecting area 21.

[0068] In another feasible embodiment of the present invention, the edge of the second communication area 22 is connected to the edge of the corrugated area 10. By making the second communication area 22 connected to the edge of the corrugated area 10, when the reinforcing plate 210 is covered on the second communication area 22, the reinforcing plate 210 on the second communication area 22 can also be connected to the edge of the corrugated area 10.

[0069] By connecting the reinforcing plate 210 on the second connecting area 22 to the edge of the corrugated area 10, it helps to reduce or eliminate the gap between the reinforcing plate 210 on the second connecting area 22 and the corrugated structure 120 on the corrugated area 10, so that the weight block can be continuously crimped onto the reinforcing plate 210 and the corrugated structure 120 on the second connecting area 22, which helps to improve the uniformity of pressure on the reinforcing plate 210 and the corrugated structure 120 on the second connecting area 22.

[0070] Preferably, the edge of the first communication area 21 and the edge of the second communication area 22 are both connected to the edge of the corrugated area 10 , thereby significantly improving the overall pressure uniformity of the first plate 111 .

[0071] In an embodiment of the present invention, the plate heat exchanger further comprises a connection structure 300, which is disposed on the first plate 111 and / or the reinforcement 200. The connection structure 300 can connect the plate heat exchanger to an external structure, which helps to improve the installation stability of the plate heat exchanger.

[0072] In a feasible embodiment, the connection structure 300 is disposed on the first plate 111. By connecting the connection structure 300 with the first plate 111, when the connection structure 300 is connected to the external structure, the connection structure 300 can fix the plate heat exchanger through the first plate 111.

[0073] In another feasible embodiment, the connection structure 300 is disposed on the reinforcement member 200. By connecting the connection structure 300 with the reinforcement member 200, when the connection structure 300 is connected to the external structure, the connection structure 300 can fix the plate heat exchanger through the reinforcement member 200.

[0074] Preferably, the connection structure 300 is disposed on the top wall 211 of the reinforcement 200, and the connection structure 300 is fixedly connected to the reinforcement 200. By disposing the connection structure 300 on the reinforcement 200, it is possible to prevent the connection structure 300 from affecting the first plate 111, which helps to improve the use stability of the heat exchange plate assembly 100.

[0075] In another feasible embodiment, the connection structure 300 may be respectively arranged on the first plate 111 and the reinforcement 200. By respectively arranging the connection structure 300 on the first plate 111 and the reinforcement 200, the plurality of connection structures 300 can synergistically play a multi-point fixing role, significantly increasing the installation stability of the plate heat exchanger.

[0076] Designers can adjust the specific location of the connection structure 300 according to usage requirements, and no specific limitation is made here.

[0077] In a feasible embodiment of the present invention, the connection structure 300 includes at least one connection stud 310. The connection stud 310 facilitates connection with a preset external structure, thereby facilitating rapid fixing of the plate heat exchanger and achieving better installation efficiency.

[0078] Preferably, the communication area 20 includes a first communication area 21 and a second communication area 22, and the first communication area 21 and the second communication area 22 are both provided with a reinforcing plate 210, and each reinforcing plate 210 may be provided with at least one connecting stud 310. The connecting studs 310 on the first communication area 21 and the connecting studs 310 on the second communication area 22 may be symmetrically or substantially symmetrically arranged. The multiple connecting studs 310 can play a multi-point fixing role, which significantly improves the installation stability of the plate heat exchanger.

[0079] Of course, in other feasible embodiments, designers can adjust the specific structure of the connection structure according to usage requirements. For example, the connection structure 300 can be set to a threaded structure, a clamping structure, an anchoring structure, a rotational structure, a magnetic structure or other structures, etc., and no specific restrictions are made here.

[0080] In another feasible embodiment of the present utility model, the communication area 20 includes a first communication area 21 and a second communication area 22 , and a connection structure 300 is provided on the first communication area 21 and / or the second communication area 22 .

[0081] In a feasible embodiment, the first communication area 21 is provided with a connection structure 300. By connecting the connection structure 300 to the first communication area 21, the first communication area 21 can be connected to an external structure by using the connection structure 300, so that the plate heat exchanger on the side where the first communication area 21 is located can be fixed.

[0082] In another feasible embodiment, the second communication area 22 is provided with a connection structure 300. By connecting the connection structure 300 to the second communication area 22, the second communication area 22 can be connected to an external structure by using the connection structure 300, so that the plate heat exchanger on the side where the second communication area 22 is located can be fixed.

[0083] In another feasible embodiment, both the first communication area 21 and the second communication area 22 are provided with connection structures 300. The plurality of connection structures 300 can play a multi-point fixing role on the plate heat exchanger, significantly improving the installation stability of the plate heat exchanger.

[0084] In an embodiment of the utility model, a third heat exchange channel for the flow of a third heat exchange medium is also formed inside the heat exchange plate group 100, and the third heat exchange channel is isolated from the first heat exchange channel and the second heat exchange channel. The first plate 111 is also provided with a third inlet and a third outlet connected to the third heat exchange channel, and the third inlet and / or the third outlet are arranged in the connecting area 20.

[0085] A third heat exchange channel can also be formed by utilizing the inter-plate channels between the heat exchange plates 110. The third heat exchange channel can allow a third heat exchange medium to flow, so that the third heat exchange medium can exchange heat with the first heat exchange medium and / or the second heat exchange medium, thereby meeting the heat exchange requirements of the three media and helping to improve the heat exchange efficiency of the plate heat exchanger.

[0086] Designers can adjust the locations of the third inlet and the third outlet according to usage requirements. For example, the third inlet and the third outlet can be respectively arranged on the first communication area 21 and the second communication area 22, and no specific limitation is made here.

[0087] Of course, in other feasible embodiments, designers can increase or decrease the number of heat exchange channels in the plate heat exchanger according to usage requirements, and no specific limitation is made here.

[0088] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0089] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A plate heat exchanger, characterized in that: include: A heat exchange plate group, the heat exchange plate group includes a plurality of stacked heat exchange plates, a first heat exchange channel for a first heat exchange medium to flow and a second heat exchange channel for a second heat exchange medium to flow are formed inside the heat exchange plate group, the first heat exchange channel and the second heat exchange channel are isolated from each other, one of the heat exchange plates located at the outermost side of the heat exchange plate group is a first plate, the first plate is provided with at least a first inlet and a first outlet communicating with the first heat exchange channel, and a second inlet and a second outlet communicating with the second heat exchange channel, the outer surface of the first plate includes a corrugated area and a communicating area, the first inlet and / or the first outlet and / or the second inlet and / or the second outlet are arranged in the communicating area, the corrugated area has a corrugated structure, and at least part of the corrugated structure protrudes from the communicating area; A reinforcement member is arranged in the communication area, and along the stacking direction of the heat exchange plates, the apex of the raised portion of the corrugated structure is in the same plane as the top wall of the reinforcement member parallel to the communication area.

2. The plate heat exchanger according to claim 1, characterized in that: The corrugated structure includes a plurality of alternately arranged wave crests and wave troughs, and the wave crests protrude from the connecting area to form the protruding portion.

3. The plate heat exchanger according to claim 1, characterized in that: The reinforcement member includes a reinforcement plate, which is disposed in the communication area and surrounds the first inlet and / or the first outlet and / or the second inlet and / or the second outlet.

4. The plate heat exchanger according to claim 3, characterized in that: The reinforcing plate covers the connecting area.

5. The plate heat exchanger according to claim 1, characterized in that: The reinforcement member is fixedly connected to the first plate.

6. The plate heat exchanger according to claim 5, characterized in that: The reinforcement member and the first plate are fixed by brazing.

7. The plate heat exchanger according to claim 1, characterized in that: The communication area includes a first communication area and a second communication area. The first communication area is formed with the first inlet and the second outlet. The second communication area is formed with the first outlet and the second inlet.

8. The plate heat exchanger according to claim 7, characterized in that: The first communication area and the second communication area are respectively arranged on both sides of the first plate, and the corrugated area is arranged between the first communication area and the second communication area.

9. The plate heat exchanger according to claim 8, characterized in that: An edge of the first communication region and / or an edge of the second communication region are connected to an edge of the corrugated region.

10. The plate heat exchanger according to claim 1, characterized in that: The plate heat exchanger further includes a connection structure, and the connection structure is arranged on the first plate and / or the reinforcement.

11. The plate heat exchanger according to claim 10, characterized in that: The connection structure is arranged on the top wall of the reinforcement member, and the connection structure is fixedly connected to the reinforcement member.

12. The plate heat exchanger according to claim 10, characterized in that: The connection structure includes at least one connection stud.

13. The plate heat exchanger according to claim 10, characterized in that: The communication area includes a first communication area and a second communication area, and the connection structure is provided on the first communication area and / or the second communication area.

14. The plate heat exchanger according to claim 1, characterized in that: A third heat exchange channel for a third heat exchange medium to flow is also formed inside the heat exchange plate group, and the third heat exchange channel is isolated from the first heat exchange channel and the second heat exchange channel. A third inlet and a third outlet connected to the third heat exchange channel are also provided on the first plate, and the third inlet and / or the third outlet are arranged in the connecting area.

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