Heat exchanger

Abstract

The utility model provides a heat exchanger and relates to the technical field of heat exchangers. The heat exchanger comprises a first heat exchange plate and a second heat exchange plate. The first heat exchange plate is connected with the second heat exchange plate, and a first flow channel is formed between the first heat exchange plate and the second heat exchange plate. The heat exchanger is provided with a first inlet and a first outlet which communicate with the first flow channel. A first groove is formed in the first heat exchange plate and / or the second heat exchange plate, and a notch of the first groove faces the first flow channel; and the first inlet is communicated with the first groove. The first groove is formed in the first inlet, the flowing section of fluid at the first inlet can be increased, the flowing speed is increased, the flowing uniformity of the fluid in the whole heat exchanger is facilitated, and the heat exchange efficiency is improved.

Description

Technical Field

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

[0002] Existing heat exchangers have been found through long-term research such as experiments and simulations to have slow fluid flow velocity and uneven flow near the inlet and outlet of the flow channel, resulting in poor overall heat exchange uniformity, uneven heat exchange, and low heat exchange efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a heat exchanger that can effectively improve the uniformity of fluid flow and enhance heat exchange efficiency.

[0004] This utility model provides a heat exchanger, comprising:

[0005] First heat exchange plate;

[0006] Second heat exchange plate;

[0007] The first heat exchange plate and the second heat exchange plate are connected, and a first flow channel is formed between the first heat exchange plate and the second heat exchange plate;

[0008] The heat exchanger has a first inlet and a first outlet respectively connected to the first flow channel; the first heat exchange plate and / or the second heat exchange plate are provided with a first groove, the opening of the first groove facing the first flow channel; the first inlet is connected to the first groove.

[0009] In an optional embodiment, the first heat exchange plate and / or the second heat exchange plate are provided with a second groove that is independent of the first groove, the opening of the second groove faces the first flow channel, and the first outlet communicates with the second groove.

[0010] In an optional embodiment, the projection of the first inlet onto the first heat exchange plate is at least partially located within the projection of the first groove onto the first heat exchange plate;

[0011] And / or, the projection of the first outlet on the first heat exchange plate is at least partially located within the projection of the second groove on the first heat exchange plate.

[0012] In an optional embodiment, a first partition rib is provided between the first heat exchange plate and the second heat exchange plate, and the two sides of the first partition rib are respectively connected to the first heat exchange plate and the second heat exchange plate; the first partition rib is located between the first inlet and the first outlet; along the length direction of the heat exchanger, one end of the first partition rib near the first inlet is connected to the end of the first heat exchange plate, and there is a gap between the other end of the first partition rib and the other end of the first heat exchange plate.

[0013] In an optional embodiment, the first groove and the second groove are independently arranged along the length direction perpendicular to the heat exchanger; a clearance opening is formed between the first groove and the second groove to avoid the first partition rib.

[0014] In an optional embodiment, the first heat exchange plate and the second heat exchange plate are respectively provided with flanges, which are connected to the bottom of the first groove and the second groove respectively, and are folded from the bottom of the groove along the direction away from the groove opening of the first groove and the second groove.

[0015] In an optional embodiment, the flange, the bottom and wall of the first groove, and the bottom and wall of the second groove are all integrally formed with the first heat exchange plate; or, the flange, the bottom and wall of the first groove, and the bottom and wall of the second groove are all integrally formed with the second heat exchange plate.

[0016] In an optional embodiment, the first heat exchange plate is provided with the first groove and the second groove; the side of the first heat exchange plate provided with the first groove and the second groove is welded to a second heat exchange plate to form the first flow channel; the side of the first heat exchange plate away from the first groove and the second groove is welded to another second heat exchange plate.

[0017] In an optional embodiment, the first inlet is provided with a first corner hole flange, and the depth of the first groove is equal to the height of the first corner hole flange; the first outlet is provided with a second corner hole flange, and the depth of the second groove is equal to the height of the second corner hole flange.

[0018] In an optional embodiment, the heat exchanger has a first side perpendicular to its length, with the first inlet and the first outlet located at opposite ends of the first side; the length of the first groove perpendicular to the first side is less than or equal to the distance from the axis of the first inlet to the first side; and the length of the second groove perpendicular to the first side is less than or equal to the distance from the axis of the first outlet to the first side.

[0019] In an optional embodiment, a second flow channel independent of the first flow channel is further formed between the first heat exchange plate and the second heat exchange plate;

[0020] The first inlet and the first outlet are respectively connected to the first flow channel;

[0021] The heat exchanger is provided with a second inlet and a second outlet; the second inlet and the second outlet are respectively connected to the second flow channel.

[0022] In an optional embodiment, at the first inlet and / or the first outlet, there is a preset distance between the bottom of the first groove on the first heat exchange plate and the side surface of the second heat exchange plate facing the first heat exchange plate, the preset distance being the sum of the height of the first flow channel and the height of the second flow channel.

[0023] In an optional embodiment, the first heat exchange plate and / or the second heat exchange plate are provided with a third groove, the opening of the third groove facing the first flow channel; the third groove is located on the opposite side of the first inlet and the first outlet; the third groove is not connected to the second inlet and the second outlet, respectively.

[0024] In an optional embodiment, a plurality of heat exchange components are included, each heat exchange component including a first heat exchange plate and a second heat exchange plate; the plurality of heat exchange components are stacked; adjacent heat exchange components are welded together;

[0025] In the multiple heat exchange components, multiple first inlets are coaxially arranged, and multiple first outlets are coaxially arranged.

[0026] The heat exchanger provided in this embodiment of the utility model has the following beneficial effects:

[0027] The heat exchanger provided in this embodiment of the present invention has a first groove at the first inlet. The first groove can increase the flow cross-section at the first inlet, increase the flow velocity of the fluid in that area, thereby making the flow velocity and distribution of the fluid more uniform, and thus achieving the purpose of uniform heat exchange, improving heat exchange efficiency and temperature uniformity. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1This is a schematic diagram of the structure of a heat exchanger provided in an embodiment of the present utility model;

[0030] Figure 2 A schematic diagram of the distribution structure of the first partition rib of the heat exchanger provided in an embodiment of this utility model;

[0031] Figure 3 A cross-sectional structural diagram of the heat exchanger provided in an embodiment of this utility model;

[0032] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 This is a schematic diagram of the cross-sectional structure at the first inlet.

[0034] Figure 6 A schematic diagram of a first structure of a heat exchanger without a first partition rib, provided for an embodiment of this utility model;

[0035] Figure 7 A schematic diagram of a second structure of a heat exchanger without the first partition rib provided in an embodiment of this utility model;

[0036] Figure 8 for Figure 3 Enlarged diagram of point B in the middle.

[0037] Icons: 100 - Heat exchanger; 101 - First groove; 103 - Second groove; 105 - Circumvention opening; 107 - Flanged edge; 108 - First corner hole flange; 109 - Second corner hole flange; 110 - First heat exchange plate; 120 - Second heat exchange plate; 111 - First inlet; 112 - First outlet; 113 - First boss; 114 - Second boss; 115 - Corner; 116 - Second inlet; 117 - Second outlet; 131 - First side; 132 - Second side; 133 - First partition rib; 134 - Second partition rib; 135 - First flow channel; 136 - Second flow channel; 137 - Third boss; 138 - Third groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0044] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0045] Please combine Figures 1 to 5This utility model provides a heat exchanger 100, including a first heat exchange plate 110 and a second heat exchange plate 120. The first heat exchange plate 110 and the second heat exchange plate 120 are connected, and a first flow channel 135 is formed between the first heat exchange plate 110 and the second heat exchange plate 120. The heat exchanger 100 has a first inlet 111 and a first outlet 112 respectively connected to the first flow channel 135. The first inlet 111 can be provided on at least one of the first heat exchange plate 110 and the second heat exchange plate 120; the first outlet 112 can be provided on at least one of the first heat exchange plate 110 and the second heat exchange plate 120. In this embodiment, the first heat exchange plate 110 and the second heat exchange plate 120 are respectively provided with a first outlet 112, and the first heat exchange plate 110 and the second heat exchange plate 120 are also respectively provided with a first inlet 111. The first inlet 111 and the first outlet 112 are respectively connected to the first flow channel 135. A first groove 101 is provided on the first heat exchange plate 110 and / or the second heat exchange plate 120, with the opening of the first groove 101 facing the first flow channel 135; the first inlet 111 is connected to the first groove 101. Providing the first groove 101 at the first inlet 111 can increase the flow cross-section of the fluid at the first inlet 111, increase the flow velocity, and improve the uniformity of fluid flow in the entire heat exchanger 100, thereby improving the heat exchange efficiency.

[0046] Optionally, a second groove 103 is provided at the first outlet 112, and the second groove 103 is provided on at least one of the first heat exchange plate 110 and the second heat exchange plate 120. The second groove 103 can increase the flow cross-section of the second groove 103, improve the uniformity of fluid flow and distribution, and better improve the heat exchange effect.

[0047] The first groove 101 at the first inlet 111 and the second groove 103 at the first outlet 112 are not connected. This can prevent the fluid from directly reaching the first outlet 112 from the first inlet 111, which would result in a small heat exchange area and low heat exchange efficiency.

[0048] When the first groove 101 is provided at the first inlet 111, it can be provided only on the first heat exchange plate 110, or only on the second heat exchange plate 120, or both the first heat exchange plate 110 and the second heat exchange plate 120 can have the first groove 101 provided. The key is to increase the height of the flow channel at the first inlet 111 and increase the flow cross-section at the first inlet 111; no specific limitation is made here. The first groove 101 can be formed in various ways, such as by stamping, mechanical grooving, or by connecting a retaining structure to the plate body; no specific limitation is made here. In this embodiment, stamping is used, which is quick, convenient, and structurally reliable. It not only increases the flow cross-section at the first inlet 111, increasing the flow velocity and improving the heat exchange efficiency, but also improves the structural strength of the heat exchange plate, which is beneficial to improving the overall quality and service life of the heat exchanger 100. The location and forming method of the second groove 103 are roughly similar to those of the first groove 101, and will not be described in detail here.

[0049] It should be noted that, taking the first groove 101 on the first heat exchange plate 110 as an example, a groove is cut or stamped on the side of the first heat exchange plate 110 facing the second heat exchange plate 120, and the opening of the first groove 101 faces the second heat exchange plate 120. Viewed from the side of the first heat exchange plate 110 away from the second heat exchange plate 120, the structure of the first groove 101 is the first boss 113 protruding from the first heat exchange plate 110.

[0050] The case where a groove is set at the first outlet 112 is similar, and will not be described in detail here.

[0051] Optionally, the projection of the first inlet 111 onto the first heat exchange plate 110 is at least partially located on the projection of the first groove 101 onto the first heat exchange plate 110. The projection of the first outlet 112 onto the first heat exchange plate 110 is at least partially located on the projection of the second groove 103 onto the first heat exchange plate 110. In short, the first groove 101 is positioned close to the first inlet 111, and the second groove 103 is positioned close to the first outlet 112. This increases the flow area at the first inlet 111 and the first outlet 112, improving the flow velocity and thus enhancing heat exchange uniformity.

[0052] Optionally, the projection of the first inlet 111 on the first heat exchange plate 110 is at least partially located within the projection of the first groove 101 on the first heat exchange plate 110. The projection of the first outlet 112 on the first heat exchange plate 110 is at least partially located within the projection of the second groove 103 on the first heat exchange plate 110. Figure 1 Viewed from the side of the first heat exchange plate 110 away from the first flow channel 135, the first groove 101 corresponds to the first boss 113, and the second groove 103 corresponds to the second boss 114.

[0053] Optionally, the first heat exchange plate 110 and the second heat exchange plate 120 have corner portions 115, with the first inlet 111 and the first outlet 112 respectively located at the corner portions 115. In this embodiment, the first heat exchange plate 110 and the second heat exchange plate 120 are generally rectangular in shape, with four sides and four corner portions 115. The first inlet 111 and the first outlet 112 are respectively located on two adjacent corner portions 115. Specifically, the heat exchange plate has a first side 131 perpendicular to its length direction, with the first inlet 111 and the first outlet 112 located at opposite ends of the first side 131. The sum of the length of the first groove 101 along the direction of the first side 131 and the length of the second groove 103 along the direction of the first side 131 is less than the length of the first side 131, thus ensuring that the first groove 101 and the second groove 103 are not connected. The length of the first groove 101 along the direction perpendicular to the first side 131 is less than or equal to the distance from the first inlet 111 to the first side 131. The length of the second groove 103 along the direction perpendicular to the first side 131 is less than or equal to the distance from the first outlet 112 to the first side 131. This can effectively increase the fluid velocity at the first inlet 111 and the first outlet 112.

[0054] Optionally, a first partition rib 133 is provided between the first heat exchange plate 110 and the second heat exchange plate 120, with the first partition rib 133 connected to both sides of the first heat exchange plate 110 and the second heat exchange plate 120 respectively. The first partition rib 133 is located between the first inlet 111 and the first outlet 112 to prevent fluid from directly entering the first outlet 112 from the first inlet 111. The first partition rib 133 is arranged along a direction perpendicular to the first side 131. In the length direction of the heat exchanger 100, one end of the first partition rib 133 near the first inlet 111 is connected to the end of the first heat exchange plate 110, and there is a gap between the other end of the first partition rib 133 and the other end of the first heat exchange plate 110. This forms a U-shaped flow channel, allowing the fluid to flow along the U-shaped flow channel, increasing the flow channel length and improving heat exchange efficiency. Of course, in other embodiments, the first partition rib 133 can also be designed in other shapes to form flow channels of different shapes, which are not specifically limited here.

[0055] Optionally, the first partition rib 133 is integrally formed with the first heat exchange plate 110 or the second heat exchange plate 120.

[0056] Combination Figure 6 and Figure 7 Of course, in some other embodiments, the first partition rib 133 may be omitted. The first inlet 111 and the first outlet 112 may be arranged along the length of the heat exchanger 100, or at two opposite corners of the heat exchanger 100, to improve the flow path length and heat exchange efficiency.

[0057] Optionally, the first groove 101 and the second groove 103 are independently arranged along the length direction perpendicular to the heat exchanger 100, that is, they are spaced apart along the extension direction of the first side 131. A clearance opening 105 is formed between the first groove 101 and the second groove 103 to avoid the first partition rib 133.

[0058] The first heat exchange plate 110 and the second heat exchange plate 120 are each provided with a flange 107. The flange 107 is connected to the bottom of the first groove 101 and the second groove 103, respectively, and is formed by folding from the bottom of the first groove 101 and the second groove 103 in a direction away from the opening of the first groove 101 and the second groove 103. The height of the flange 107 is greater than or equal to the depth of the first groove 101 and the second groove 103.

[0059] Optionally, for the structure on the first heat exchange plate 110, the flange 107, the bottom and wall of the first groove 101, and the bottom and wall of the second groove 103 are all integrally formed with the first heat exchange plate 110. Similarly, for the structure on the second heat exchange plate 120, the flange 107, the bottom and wall of the first groove 101, and the bottom and wall of the second groove 103 are all integrally formed with the second heat exchange plate 120.

[0060] Optionally, the first heat exchange plate 110 is provided with a first groove 101 and a second groove 103. The side of the first heat exchange plate 110 with the first groove 101 and the second groove 103 is welded to a second heat exchange plate 120 to form a first flow channel 135. The side of the first heat exchange plate 110 away from the first groove 101 and the second groove 103 is welded to another second heat exchange plate 120.

[0061] Optionally, the first inlet 111 is provided with a first corner hole flange 108, and the depth of the first groove 101 is equal to the height of the first corner hole flange 108; the first outlet 112 is provided with a second corner hole flange 109, and the depth of the second groove 103 is equal to the height of the second corner hole flange 109, so as to increase the flow cross-sectional area and improve the uniformity of medium flow.

[0062] Of course, in some embodiments, the depths of the first corner hole flange 108 and the first groove 101 may not be equal, and the depths of the second corner hole flange 109 and the second groove 103 may not be equal; no specific limitation is made here. The first corner hole flange 108 and the second corner hole flange 109 are respectively welded to the adjacent first heat exchange plate 110 or second heat exchange plate 120 of the previous layer.

[0063] Optionally, the heat exchanger 100 in this embodiment can be used for multiphase medium flow heat exchange to improve heat exchange efficiency. For example, it can realize heat exchange of two, three, or more media. Taking two heat exchange media as an example, the flow channels of the heat exchanger 100 include independent first flow channel 135 and second flow channel 136; one medium flows in the first flow channel 135, and the other medium flows in the second flow channel 136. The flow of the two media is independent and does not interfere with each other, that is, the two heat exchange media will not mix or meet within the heat exchanger 100.

[0064] The first inlet 111 and the first outlet 112 are respectively connected to the first flow channel 135. The first heat exchange plate 110 and the second heat exchange plate 120 are respectively provided with a second inlet 116; the first heat exchange plate 110 and the second heat exchange plate 120 are respectively provided with a second outlet 117; the second inlet 116 and the second outlet 117 are respectively connected to the second flow channel 136. It can be understood that the first heat exchange plate 110 and the second heat exchange plate 120 are welded to form the first flow channel 135 and the second flow channel 136.

[0065] Combination Figure 4 , Figure 5 Optionally, at the first inlet 111 and / or the first outlet 112, there is a preset distance H between the bottom of the first groove 101 and the second groove 103 on the first heat exchange plate 110 and the side surface of the second heat exchange plate 120 facing the first heat exchange plate 110. The preset distance is the sum of the height h1 of the first flow channel 135 and the height h2 of the second flow channel 136.

[0066] Optionally, the first heat exchange plate 110 and the second heat exchange plate 120 have four corner portions 115. The first inlet 111 and the first outlet 112 are located on two corner portions 115 on the same side, and the second inlet 116 and the second outlet 117 are located on two corner portions 115 on the other side. In other words, the first heat exchange plate 110 and the second heat exchange plate 120 have a first side 131 and a second side 132 arranged opposite to each other, as well as a third side and a fourth side arranged opposite to each other. The first inlet 111 and the first outlet 112 are located at the corners at both ends of the first side 131, and the second inlet 116 and the second outlet 117 are located at the corners at both ends of the second side 132.

[0067] Of course, in some other embodiments, the first inlet 111 and the first outlet 112 may be located at the corners at both ends of the third side, and the second inlet 116 and the second outlet 117 may be located at the corners at both ends of the fourth side. Alternatively, the first inlet 111 and the first outlet 112 may be located at corners on one set of diagonals, and the second inlet 116 and the second outlet 117 may be located at corners on another set of diagonals; no specific limitation is made here.

[0068] Combination Figure 8Optionally, a third groove 138 is provided on the first heat exchange plate 110 and / or the second heat exchange plate 120, with the opening of the third groove 138 facing the first flow channel 135. The third groove 138 can be provided on the first heat exchange plate 110, or on the second heat exchange plate 120, or both the first heat exchange plate 110 and the second heat exchange plate 120 may have a third groove 138. Since the opening of the third groove 138 faces the first flow channel 135, the design of the third groove 138 can increase the height of the first flow channel 135, i.e., increase the flow cross-section of the first flow channel 135, thereby facilitating an increase in flow velocity. Combined with... Figure 1 From the side of the heat exchange plate away from the flow channel, the structure of the third groove 138 corresponds to the third boss 137.

[0069] The third groove 138 is located on the opposite side of the first inlet 111 and the first outlet 112. That is, the third groove 138 is located close to the second inlet 116 and the second outlet 117. It can be understood that, under the condition of equal flow cross-section, since the fluid velocity is relatively slow at the corners, the third groove 138 is respectively provided at the two corners of the second side 132 in this embodiment, which is beneficial to increase the flow velocity at the two corners of the second side 132 and improve the uniformity of fluid flow. The third groove 138 is not connected to the second inlet 116 and the second outlet 117. It should be noted that the number of third grooves 138 can be one or more, and there is no specific limitation here.

[0070] Optionally, the length of the third groove 138 along the second side 132 is less than or equal to the length of the second side 132, and the length of the third groove 138 along the direction perpendicular to the second side 132 is less than or equal to the distance from the axis of the second inlet 116 to the second side 132. Alternatively, the length of the third groove 138 along the direction perpendicular to the second side 132 is less than or equal to the distance from the axis of the second outlet 117 to the second side 132. This can effectively increase the fluid velocity in the first flow channel 135 near the corner of the second inlet 116 and the second outlet 117.

[0071] Optionally, a second partition rib 134 is provided between the first heat exchange plate 110 and the second heat exchange plate 120. The second partition rib 134 is used to separate the second inlet 116 and the second outlet 117. The second partition rib 134 is located between the second inlet 116 and the second outlet 117 to prevent fluid from directly entering the second outlet 117 from the second inlet 116. The second partition rib 134 is arranged in a direction perpendicular to the second side 132. This can form a U-shaped flow channel, allowing the fluid to flow along the U-shaped flow channel, increasing the flow channel length and improving the heat exchange efficiency. Of course, in some other embodiments, the second partition rib 134 can also be designed in other shapes to form flow channels of different shapes, which are not specifically limited here. The arrangement of the second partition rib 134 is similar to the structure and molding of the first partition rib 133. In some embodiments, the second partition rib 134 can also be omitted.

[0072] Optionally, the heat exchanger 100 includes multiple heat exchange components, each including a first heat exchange plate 110 and a second heat exchange plate 120. The multiple heat exchange components are stacked; adjacent heat exchange components are welded together. Among the multiple heat exchange components, multiple first inlets 111 are coaxially arranged, and multiple first outlets 112 are coaxially arranged. Multiple second inlets 116 are coaxially arranged, and multiple second outlets 117 are coaxially arranged. Multiple first grooves 101, multiple second grooves 103, and multiple third grooves 138 are aligned in the stacking height direction. In this way, each heat exchange component can increase the fluid velocity at corners, resulting in high overall heat exchange efficiency and good heat exchange uniformity.

[0073] In summary, the heat exchanger 100 provided in this embodiment of the present invention has the following beneficial effects, including:

[0074] The heat exchanger 100 provided in this embodiment of the present invention has a first groove 101 and a second groove 103 at the first inlet 111 and the first outlet 112, respectively. The grooves can increase the flow cross-section at the first inlet 111 and the first outlet 112, increase the flow velocity of the fluid in this area, thereby making the flow velocity and distribution of the fluid more uniform, and thus achieving the purpose of uniform heat exchange, improving heat exchange efficiency and temperature uniformity. Multiple first heat exchange plates 110 and multiple second heat exchange plates 120 are alternately stacked and welded to form multiple heat exchange components, which is beneficial to improving heat exchange efficiency and heat exchange uniformity.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of this utility model.

Claims

1. A heat exchanger, characterized by, include: First heat exchange plate (110); Second heat exchange plate (120); The first heat exchange plate (110) and the second heat exchange plate (120) are connected, and a first flow channel (135) is formed between the first heat exchange plate (110) and the second heat exchange plate (120); The heat exchanger has a first inlet (111) and a first outlet (112) respectively connected to the first flow channel (135); the first heat exchange plate (110) and / or the second heat exchange plate (120) are provided with a first groove (101), the opening of the first groove (101) facing the first flow channel (135); the first inlet (111) is connected to the first groove (101).

2. The heat exchanger of claim 1, wherein The first heat exchange plate (110) and / or the second heat exchange plate (120) are provided with a second groove (103) that is independent of the first groove (101). The opening of the second groove (103) faces the first flow channel (135), and the first outlet (112) is connected to the second groove (103).

3. The heat exchanger of claim 2, wherein The projection of the first inlet (111) on the first heat exchange plate (110) is at least partially located in the projection of the first groove (101) on the first heat exchange plate (110); And / or, the projection of the first outlet (112) on the first heat exchange plate (110) is at least partially located in the projection of the second groove (103) on the first heat exchange plate (110).

4. The heat exchanger of claim 2, wherein A first partition rib (133) is provided between the first heat exchange plate (110) and the second heat exchange plate (120). The two sides of the first partition rib (133) are respectively connected to the first heat exchange plate (110) and the second heat exchange plate (120). The first partition rib (133) is located between the first inlet (111) and the first outlet (112). Along the length direction of the heat exchanger, one end of the first partition rib (133) near the first inlet (111) is connected to the end of the first heat exchange plate (110), and there is a gap between the other end of the first partition rib (133) and the other end of the first heat exchange plate (110).

5. The heat exchanger of claim 4, wherein The first groove (101) and the second groove (103) are independently arranged along the length direction perpendicular to the heat exchanger; an avoidance opening (105) is formed between the first groove (101) and the second groove (103) to avoid the first partition rib (133).

6. The heat exchanger of claim 2, wherein The first heat exchange plate (110) and the second heat exchange plate (120) are respectively provided with flanges (107). The flanges (107) are connected to the bottom of the first groove (101) and the second groove (103) respectively, and are formed by folding from the bottom of the groove along the direction away from the groove opening of the first groove (101) and the second groove (103).

7. The heat exchanger of claim 6, wherein The flange (107), the bottom and wall of the first groove (101), and the bottom and wall of the second groove (103) are all integrally formed with the first heat exchange plate (110); Alternatively, the flange (107), the bottom and wall of the first groove (101), and the bottom and wall of the second groove (103) are all integrally formed with the second heat exchange plate (120).

8. The heat exchanger of claim 2, wherein The first heat exchange plate (110) is provided with the first groove (101) and the second groove (103); one side of the first heat exchange plate (110) provided with the first groove (101) and the second groove (103) is welded to a second heat exchange plate (120) to form the first flow channel (135); the side of the first heat exchange plate (110) away from the first groove (101) and the second groove (103) is welded to another second heat exchange plate (120).

9. The heat exchanger according to claim 2, characterized in that, The first inlet (111) is provided with a first corner hole flange (108), and the depth of the first groove (101) is equal to the height of the first corner hole flange (108); the first outlet (112) is provided with a second corner hole flange (109), and the depth of the second groove (103) is equal to the height of the second corner hole flange (109).

10. The heat exchanger of claim 2, wherein The heat exchanger has a first side (131) perpendicular to its length, with the first inlet (111) and the first outlet (112) located at opposite ends of the first side (131); the length of the first groove (101) perpendicular to the first side (131) is less than or equal to the distance from the axis of the first inlet (111) to the first side (131); and the length of the second groove (103) perpendicular to the first side (131) is less than or equal to the distance from the axis of the first outlet (112) to the first side (131).

11. The heat exchanger of claim 1, wherein A second flow channel (136) independent of the first flow channel (135) is also formed between the first heat exchange plate (110) and the second heat exchange plate (120); The first inlet (111) and the first outlet (112) are respectively connected to the first flow channel (135); The heat exchanger is provided with a second inlet (116) and a second outlet (117); the second inlet (116) and the second outlet (117) are respectively connected to the second flow channel (136).

12. The heat exchanger of claim 11, wherein, At the first inlet (111) and / or the first outlet (112), there is a preset distance between the bottom of the first groove (101) on the first heat exchange plate (110) and the side surface of the second heat exchange plate (120) facing the first heat exchange plate (110), the preset distance being the sum of the height of the first flow channel (135) and the height of the second flow channel (136).

13. The heat exchanger of claim 11, wherein The first heat exchange plate (110) and / or the second heat exchange plate (120) are provided with a third groove (138), the opening of the third groove (138) facing the first flow channel (135); the third groove (138) is located on the opposite side of the first inlet (111) and the first outlet (112); the third groove (138) is not connected to the second inlet (116) and the second outlet (117), respectively.

14. The heat exchanger according to any one of claims 1 to 13, characterized in that It includes multiple heat exchange components, each heat exchange component including a first heat exchange plate (110) and a second heat exchange plate (120); the multiple heat exchange components are stacked; adjacent heat exchange components are welded together; In the multiple heat exchange components, multiple first inlets (111) are coaxially arranged, and multiple first outlets (112) are coaxially arranged.

Images