Sealing structure for heat exchanger
By designing a seal connecting groove structure with projecting and concave parts in the heat exchanger, the contact area between the seal and the heat exchange plate and the deformation resistance are enhanced, and the problem of low sealing in the prior art is solved, which significantly increases the problem of Improves sealing and media passing through difficulty.
Patent Information
- Application Number
- CN202323386593.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-12
AI Technical Summary
The contact surface between the existing heat exchanger seal and the metal heat exchange plate is flat, and the medium is easy to pass through under pressure, resulting in low sealing. The metal heat exchange plate is easily deformed by pressure, and the seal is separated from the plate, reducing the seal. sex.
A structure is designed including a heat exchange plate and a seal arranged between two adjacent heat exchange plates. The connecting groove of the seal is provided with a projection and a recessed portion, and the projection is arc-shaped and connected. The outer side wall of the groove is vertical and the inner side wall is inclined. The middle part of the seal is equipped with a reinforcement part and a V-shaped groove, and the extension part extends out of the edge of the heat exchange plate to increase the contact area and resistance to deformation.
The deformation resistance of the seal structure is improved, the difficulty of separation of the sealing member and the heat exchange plate is increased, and the path of the medium is complicated, which significantly improves the sealing property and prevents the leakage of the medium.
Smart Images
Figure CN222211378U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, in particular to a sealing structure for heat exchangers. Background Art
[0002] A heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures. A plate heat exchanger is a high-efficiency heat exchanger that includes multiple stacked metal heat exchange plates, a seal between two adjacent metal heat exchange plates, and a clamping mechanism for pressing the multiple metal heat exchange plates. In fact, a channel for the medium to pass through is formed between two adjacent metal heat exchange plates, and the seal serves to limit the channel of the medium and prevent the medium from leaking out of the two adjacent metal heat exchange plates.
[0003] However, in the prior art, the contact surface between the seal and the metal heat exchange plate is a plane, and the medium can easily pass through the contact surface between the seal and the metal heat exchange plate under pressure, resulting in low sealing performance. In addition, under the pressure of the medium, the metal heat exchange plate is easily deformed by pressure, and the seal is easily separated from the metal heat exchange plate, reducing the sealing performance. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a sealing structure for a heat exchanger, which can improve the sealing performance.
[0005] In order to solve the above technical problems, the utility model provides a sealing structure for a heat exchanger, comprising a heat exchange plate and a seal arranged between two adjacent heat exchange plates; the heat exchange plate is provided with a connecting groove for placing the seal, and a protrusion protruding toward the opening direction of the connecting groove is provided in the middle of the groove bottom of the connecting groove, and the cross-section of the seal is a vertically symmetrical figure and the lower cross-section wheel contour matches the cross-section contour of the connecting groove.
[0006] As an improvement of the above solution, the protruding height of the protruding portion is smaller than the depth of the connecting groove and larger than half of the depth of the connecting groove.
[0007] As an improvement of the above solution, the protrusion is arranged in an arc shape, and the groove bottom of the connecting groove is provided with concave portions on both sides of the protrusion, which are concave in an arc shape in a direction away from the opening of the connecting groove.
[0008] As an improvement of the above solution, the outer side wall of the connecting groove is vertically arranged, and the inner side wall of the connecting groove is inclined upward from the outside to the inside.
[0009] As an improvement of the above solution, a reinforcement portion for abutting against two adjacent heat exchange plates is provided on the inner side of the middle portion of the sealing member.
[0010] As an improvement of the above solution, an inwardly concave V-shaped groove is provided on the inner side of the reinforcement portion.
[0011] As an improvement of the above solution, the outer side wall of the connecting groove is tangent to the outer recessed portion, and the inner side wall of the connecting groove is tangent to the inner recessed portion.
[0012] As an improvement of the above solution, the protruding height of the protruding portion and the recessed depth of the recessed portion are both greater than the thickness of the heat exchange plate.
[0013] As an improvement of the above solution, an extension portion extending out of the edge of the heat exchange plate is provided on the outer side of the middle portion of the sealing member.
[0014] The implementation of this utility model has the following beneficial effects:
[0015] The sealing structure for the heat exchanger of the utility model cooperates with each other through the heat exchange plate, the seal, the connecting groove and the protrusion, which can improve the deformation resistance of the connecting groove, increase the difficulty of separating the seal from the heat exchange plate, increase the difficulty of the medium passing through the seal and the heat exchange plate under pressure, and improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the heat exchanger when the sealing structure is combined in the embodiment of the utility model;
[0017] Figure 2 for Figure 1 Magnified view at A in the middle;
[0018] Figure 3 It is a structural schematic diagram of the heat exchanger when the sealing structure is separated in the embodiment of the utility model.
[0019] In the figure: 1. heat exchange plate; 2. sealing member; 3. connecting groove; 4. protruding portion; 5. recessed portion; 6. reinforcing portion; 7. V-shaped groove; 8. extending portion. DETAILED DESCRIPTION
[0020] The following is a clear and complete description of the technical solution in the utility model in conjunction with the accompanying drawings and specific embodiments, so as to more clearly understand the technical ideas to be protected by the utility model. It is only stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the drawings of the utility model, and they are not specific limitations of the utility model.
[0021] like Figures 1 to 3As shown, a sealing structure for a heat exchanger in an embodiment of the utility model comprises a heat exchange plate 1 and a seal 2 arranged between two adjacent heat exchange plates 1; in fact, the heat exchange plate 1 is provided with a plurality of through holes for medium to flow in or out, and the shape of the seal 2 is arranged according to the shape of the flow path of the medium, which will not be described one by one here. The heat exchange plate 1 is provided with a connecting groove 3 for placing the seal 2, which plays a role in limiting the seal 2 and increasing the contact area between the heat exchange plate 1 and the seal 2.
[0022] The middle part of the bottom of the connecting groove 3 is provided with a protrusion 4 protruding toward the opening direction of the connecting groove 3. The cross section of the sealing member 2 is a vertically symmetrical figure and the lower cross section wheel profile matches the cross section profile of the connecting groove 3. Figure 3 As shown, the shape of the protrusion 4 corresponding to the middle part of the lower side of the seal 2 is concave upward, and the upper and lower parts of the seal 2 can be respectively embedded in the connecting grooves 3 of the two upper and lower opposite heat exchange plates 1; the protrusion 4 can improve the deformation resistance of the connecting groove 3, increase the difficulty of separating the seal 2 from the heat exchange plate 1, and improve the sealing performance; in addition, compared with the medium passing through the seal 2 and the heat exchange plate 1 in a straight line, the path of the medium passing through the seal 2 and the heat exchange plate 1 is more complicated, which increases the difficulty of the medium passing through the seal 2 and the heat exchange plate 1 under pressure, and further improves the sealing performance.
[0023] The sealing structure for the heat exchanger of the utility model cooperates with each other among the heat exchange plate 1, the seal 2, the connecting groove 3 and the protrusion 4, so as to improve the anti-deformation ability of the connecting groove 3, increase the difficulty of separating the seal 2 from the heat exchange plate 1, increase the difficulty of the medium passing through the seal 2 and the heat exchange plate 1 under pressure, and improve the sealing performance.
[0024] It should be noted that the protruding height of the protrusion 4 is preferably less than the depth of the connecting groove 3 and greater than half the depth of the connecting groove 3, ensuring that the lower part or the upper part of the seal 2 can be fully extended into the connecting groove 3. Compared with the case where the protruding height of the protrusion 4 is less than half the depth of the connecting groove 3, the length of the path through which the medium passes between the seal 2 and the heat exchange plate 1 in this embodiment is longer.
[0025] Specifically, the protrusion 4 is preferably arranged in an arc shape, and the groove bottom of the connection groove 3 is provided with a concave portion 5 which is concave in an arc shape in the direction away from the opening of the connection groove 3 on both sides of the protrusion 4. Through the arrangement of the concave portion 5, the path of the medium passing through the seal 2 and the heat exchange plate 1 is further extended. Compared with the protrusion 4 and the concave portion 5 with straight contour edges, the contour edge in the arc shape is longer, further increasing the length of the path of the medium passing through the seal 2 and the heat exchange plate 1. More specifically, the protrusion height of the protrusion 4 and the concave depth of the concave are preferably greater than the thickness of the heat exchange plate 1 to ensure the anti-deformation ability of the connection groove 3.
[0026] More specifically, the outer side wall of the connecting groove 3 is preferably vertically arranged, and the inner side wall of the connecting groove 3 is preferably inclined upward from the outside to the inside. It should be noted that the side wall of the connecting groove 3 close to the medium flow channel is the inner side wall, and the side wall away from the medium flow channel is the outer side wall. The vertically arranged outer side wall can better prevent the seal 2 from moving outward, and the inner side wall of the channel inclinedly arranged can guide and position the seal 2 during installation. It should be noted that the connecting groove 3 is integrally formed when the heat exchange plate 1 is stamped and formed. The outer side wall of the connecting groove 3 is preferably tangent to the outer recessed portion 5, and the inner side wall of the connecting groove 3 is preferably tangent to the inner recessed portion 5, so that the structure of the connecting groove 3 is simpler and the difficulty of forming the connecting groove 3 is reduced.
[0027] It is worth mentioning that a reinforcing portion 6 for abutting against two adjacent heat exchange plates 1 is provided on the inner side of the middle part of the seal 2. Under the clamping force of the external clamping mechanism, the two adjacent heat exchange plates 1 clamp the seal 2 through the two connecting grooves 3, and the reinforcing portion 6 is also clamped by the heat exchange plate 1 to increase the contact area between the heat exchange plate 1 and the seal 2. Furthermore, a V-shaped groove 7 concave inward is preferably provided on the inner side of the reinforcing portion 6. The medium enters the V-shaped groove 7 under pressure and pushes the reinforcing portion 6 to abut against the heat exchange plates 1 on the upper and lower sides to improve the sealing performance.
[0028] In addition, the outer middle part of the seal 2 is preferably provided with an extension portion 8 extending beyond the edge of the heat exchange plate 1 to mark the seal 2 and make it easier to visually observe whether there is a seal 2 between two adjacent heat exchange plates 1.
[0029] The above are only specific embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A sealing structure for a heat exchanger, characterized in that: It comprises a heat exchange plate and a seal arranged between two adjacent heat exchange plates; the heat exchange plate is provided with a connecting groove for placing the seal, a protrusion protruding toward the opening direction of the connecting groove is provided in the middle of the groove bottom of the connecting groove, and the cross section of the seal is a vertically symmetrical figure and the lower cross section wheel contour matches the cross section contour of the connecting groove.
2. A sealing structure for a heat exchanger according to claim 1, characterized in that: The protruding height of the protruding portion is smaller than the depth of the connecting groove and larger than half of the depth of the connecting groove.
3. A sealing structure for a heat exchanger according to claim 2, characterized in that: The protrusion is arranged in an arc shape, and the groove bottom of the connecting groove is provided with concave parts on both sides of the protrusion, which are concave in an arc shape in a direction away from the opening of the connecting groove.
4. A sealing structure for a heat exchanger according to claim 3, characterized in that: The outer side wall of the connecting groove is vertically arranged, and the inner side wall of the connecting groove is inclined upward from the outside to the inside.
5. A sealing structure for a heat exchanger according to claim 4, characterized in that: A reinforcing portion for abutting against two adjacent heat exchange plates is provided on the inner side of the middle portion of the sealing member.
6. A sealing structure for a heat exchanger according to claim 5, characterized in that: An inwardly concave V-shaped groove is provided on the inner side of the reinforcement portion.
7. A sealing structure for a heat exchanger according to claim 4, characterized in that: The outer side wall of the connecting groove is tangent to the outer concave portion, and the inner side wall of the connecting groove is tangent to the inner concave portion.
8. A sealing structure for a heat exchanger according to claim 3, characterized in that: The protruding height of the protruding portion and the recessed depth of the recessed portion are both greater than the thickness of the heat exchange plate.
9. A sealing structure for a heat exchanger according to claim 1, characterized in that: An extension portion extending out of the edge of the heat exchange plate is arranged on the outer side of the middle portion of the sealing member.