Heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger. The heat exchanger comprises a barrel, and a cavity is formed in the barrel; the sealing plate is arranged on the cylinder body and seals the end part of the cylinder body; the sealing plate is provided with a protruding part in a protruding mode in the first direction, and the protruding part is located in the cavity. The heat exchanger meets the pressure resistance degree and is low in manufacturing cost.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, and in particular to a heat exchanger. Background Art

[0002] The heat exchanger includes a cylinder, a plurality of heat exchange tubes, a tube sheet and a sealing plate. The cylinder is configured with a cavity. The heat exchange tubes are arranged to extend along the axial direction of the cylinder and penetrate the tube sheet. The sealing plate is arranged at the end of the cylinder to seal the end of the cylinder.

[0003] The existing sealing plate is a flat plate structure. During the operation of the heat exchanger, refrigerant will be introduced into the heat exchanger, which will generate a certain amount of pressure on the sealing plate of the heat exchanger. The flat plate sealing plate has low strength and weak pressure bearing capacity. Under long-term pressure, it is easy to deform and affect the sealing of the heat exchanger. How to improve the pressure resistance of the sealing plate on the existing basis, thereby improving the sealing performance, is a technical problem to be solved. Utility Model Content

[0004] Based on this, it is necessary to provide a heat exchanger that is beneficial to improving the pressure resistance of the sealing plate.

[0005] A heat exchanger, comprising:

[0006] A cylinder body, formed with a cavity;

[0007] A sealing plate, which is arranged on the cylinder and seals the end of the cylinder;

[0008] The sealing plate is provided with a protrusion along a first direction, and the protrusion is located in the cavity.

[0009] In one embodiment, there are a plurality of protrusions, and the plurality of protrusions are arranged at intervals; or, there are a plurality of protrusions, and the plurality of protrusions are arranged continuously.

[0010] In one embodiment, the plurality of protrusions are at least defined as a first protrusion and a second protrusion; the sealing plate includes a first body and a second body, the first protrusion is arranged on the first body, the second protrusion is arranged on the second body, and the second body is connected to the first protrusion.

[0011] In one embodiment, along the first direction, a protrusion height of the first protrusion is different from a protrusion height of the second protrusion.

[0012] In one embodiment, the protruding height of the first protruding portion is set to D1, the protruding height of the second protruding portion is set to D2, and D1 and D2 satisfy the relationship: 0.3≤D1 / D2≤0.8.

[0013] In one embodiment, the maximum outer diameter of the first protrusion is set to Φ1, and the maximum outer diameter of the second protrusion is set to Φ2, and Φ1 and Φ2 satisfy the relationship: 1≤Φ1 / Φ2<2.

[0014] In one embodiment, the maximum outer diameter of the first body is set to Φ3; Φ1 and Φ3 satisfy the relationship: 0.7≤Φ1 / Φ3<1; Φ2 and Φ3 satisfy the relationship: 0.4≤Φ2 / Φ3<0.75.

[0015] In one embodiment, the height D1 of the first protrusion satisfies the relationship: 5mm≤D1≤20mm; the slope of the first protrusion is 40%-60%; the height D2 of the second protrusion satisfies the relationship: 5mm≤D2≤30mm; the slope of the second protrusion is 35%-45%.

[0016] In one embodiment, the first body includes a connecting plate and a connecting portion, the connecting portion is located on a peripheral side of the connecting plate, the connecting plate is located between the first protruding portion and the connecting portion, and is connected to the first protruding portion and the connecting portion respectively.

[0017] In one embodiment, the heat exchanger also includes an end plate disposed inside the cylinder, the end plate being provided with a first through hole for the heat exchange medium to flow in and a second through hole for the heat exchange medium to flow out, the sealing plate, the cylinder and the end plate are arranged to form a first cavity, the first through hole and the second through hole form a channel in the first cavity, and the projection of at least part of the protrusion on the end plate is located between the first through hole and the second through hole.

[0018] Compared with the prior art, the setting of the protrusion can effectively resist the pressure applied to the sealing plate from the inside of the heat exchanger, reducing the deformation probability of the sealing plate. The protrusion can realize pressure transition, evenly distribute the pressure to the sealing plate, increase the pressure area, and improve the pressure resistance of the sealing plate. In this way, the overall thickness of the sealing plate does not need to be set too thick to meet the pressure resistance, effectively reducing material costs and manufacturing costs. In addition, the processing has also changed from turning to mold stamping, reducing processing costs and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1A schematic diagram of the structure of the heat exchanger provided in this application.

[0021] Figure 2 This is a schematic diagram of the structure of the sealing plate provided in this application.

[0022] Figure 3 Side view of the cover plate provided for this application.

[0023] Figure 4 Front view of the cover plate provided for this application.

[0024] Figure 5 for Figure 4 Sectional view along line AA.

[0025] Figure 6 Side view of a heat exchanger provided for this application.

[0026] Figure 7 A partial cross-sectional view of the barrel of the heat exchanger provided in the present application.

[0027] Figure numerals: 200, cylinder; 201, cavity; 100, sealing plate; 100a, protrusion; 11, first protrusion; 21, second protrusion; 10, first body; 101, connecting plate; 102, connecting part; 20, second body; 202, end plate; 203, first through hole; 204, second through hole; 205, first cavity. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0033] See also Figure 1-Figure 7 The present application provides a heat exchanger, which includes a cylinder 200, a sealing plate 100, and a protrusion 100a. The cylinder 200 forms a cavity 201. The sealing plate 100 is arranged on the cylinder 200 and closes the end of the cylinder 200. The sealing plate is provided with a protrusion 100a along a first direction, and the protrusion 100a is located in the cavity 201.

[0034] The protrusion 100a is arranged to protrude along the first direction, where the first direction refers to the direction from the end of the heat exchanger cylinder 200 to the inner cavity 201 of the heat exchanger cylinder 200. The arrangement of the protrusion effectively resists the pressure applied to the sealing plate from the inside of the heat exchanger, and reduces the probability of deformation of the sealing plate. The protrusion can also achieve pressure transition, avoid the defect of concentrated pressure at the protruding position, reduce the possibility of deformation of the sealing plate, and increase the service life.

[0035] Furthermore, there are multiple protrusions 100a, and pressure transition can be achieved between the multiple protrusions 100a, avoiding the defect of pressure concentration at the protruding position, reducing the possibility of deformation of the sealing plate, and increasing the service life.

[0036] Furthermore, the plurality of protrusions 100a may be arranged at intervals. Of course, it is not limited thereto, and the plurality of protrusions 100a may also be arranged continuously. In this embodiment, it is preferred to adopt a continuous arrangement, which has a better pressure transition effect.

[0037] Furthermore, the plurality of protrusions 100a are at least defined as a first protrusion 11 and a second protrusion 21. The sealing plate includes a first main body 10 and a second main body 20. The first main body 10 is used to close the cylinder 200, and the first protrusion 11 is provided on the first main body 10, and the first protrusion 11 protrudes along a first direction. The second main body 20 is connected to the first protrusion 11, and the second protrusion 21 is provided on the second main body 20, and the second protrusion 21 protrudes along the first direction. The existence of the first protrusion plays a transitional role, which can evenly disperse the pressure at the position of the second protrusion to the first body, greatly increase the pressure area, and further improve the compressive strength. It avoids the defect of pressure concentrated at the protruding position, reduces the possibility of deformation of the sealing plate, and improves the service life.

[0038] Furthermore, the protruding height of the first protrusion 11 is different from the protruding height of the second protrusion 21. As a result, the pressures that the first protrusion 11 and the second protrusion 21 can withstand are also different. When a stable pressure is applied to the cylinder for a long time, the first protrusion 11 and the second protrusion 21 are not easy to deform at the same time, thereby extending the service life of the sealing plate. The difference here refers to that the protruding height of the second protrusion 21 is greater than the protruding height of the first protrusion 11. Of course, in other embodiments, the protruding height of the second protrusion 21 can also be set to be less than the protruding height of the first protrusion 11. The specific selection can be made according to actual needs.

[0039] See also Figure 5 , the protruding height of the first protruding portion 11 is set to D1, and the protruding height of the second protruding portion 21 is set to D2, and D1 and D2 satisfy the relationship: 0.3≤D1 / D2≤0.8. If it is lower than this value range, the height of the first protruding portion 11 is too small, the pressure transmission effect is poor, and it is difficult to meet the requirement of the sealing plate not to deform; if it is higher than this value range, the height of the first protruding portion 11 is too large, which will also weaken the pressure transmission effect and it is difficult to meet the requirement of the sealing plate not to deform.

[0040] The specific value of D1 / D2 can be 0.3, 0.5, 0.8, etc. Of course, the value of Φ1 / Φ3 can also be selected according to the actual situation, which will not be described in detail here.

[0041] Furthermore, the protruding height D1 of the first protruding portion 11 satisfies the relationship: 5mm≤D1≤20mm. That is, in the present embodiment, the protruding height of the first protruding portion 11 is set between 5mm-20mm. If it is lower than this value range, the protruding height is too small, the protrusion is too shallow, the pressure dispersion effect is weak, and it is difficult to meet the requirement of non-deformation of the sealing plate; if it is higher than this value range, the protruding height is too large, the protrusion is too deep, the thickness requirement of the first body is increased, too much material is wasted, and the production cost is increased.

[0042] The specific value of D1 may be 5 mm, 8 mm, 11 mm, 15 mm, 18 mm, 20 mm, etc. Of course, the value of D1 may also be selected according to the actual situation, which will not be described in detail here.

[0043] Furthermore, the protruding height D2 of the second protruding portion 21 satisfies the relationship: 5mm≤D2≤30mm. That is, in this embodiment, the protruding height of the second protruding portion 21 is set between 5mm-30mm. If it is lower than this value range, the protruding height is too small, the protrusion is too shallow, and the overall pressure resistance is weak, which makes it difficult to meet the requirement of non-deformation of the sealing plate; if it is higher than this value range, the protruding height is too large, the protrusion is too deep, and the thickness requirement of the second body is increased, which wastes too much material and increases production costs.

[0044] The specific value of D2 can be 5mm, 10mm, 15mm, 20mm, 22mm, 25mm, 30mm, etc. Of course, the value of D2 can also be selected according to the actual situation, which is not described in detail here. Further, the slope of the first protrusion 11 is 40%-60%. The specific value can be 40%, 45%, 50%, 52%, 57%, 60%, etc. Of course, the value can also be selected according to the actual situation, which is not described in detail here.

[0045] Furthermore, the slope of the second protrusion 21 is 35%-45%. The specific values ​​may be 35%, 37%, 40%, 42%, 45%, etc. Of course, the values ​​may also be selected according to the actual situation, which will not be described in detail here.

[0046] See also Figure 4, the maximum outer diameter of the first protrusion 11 is set to Φ1, and the maximum outer diameter of the second protrusion 21 is set to Φ2, and Φ1 and Φ2 satisfy the relationship: 1≤Φ1 / Φ2<2. The maximum outer diameter of the first main body 10 is set to Φ3; Φ1 and Φ3 satisfy the relationship: 0.7≤Φ1 / Φ3<1; Φ2 and Φ3 satisfy the relationship: 0.4≤Φ2 / Φ3<0.75. Furthermore, it is ensured that the first protrusion 11 and the second protrusion 21 are maintained at an appropriate size, so that the first protrusion 11 will not be too small to affect the uniform distribution of pressure, and the second protrusion 21 will not be too small to affect the pressure resistance, thereby maximizing the pressure resistance of the overall sealing plate.

[0047] Specifically, the value of Φ1 / Φ2 can be 1, 1.4, 1.5, 1.7, 2, etc. Of course, the value of Φ1 / Φ2 can also be selected according to the actual situation, which is not described in detail here. The value of Φ1 / Φ3 can be 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, etc. Of course, the value of Φ1 / Φ3 can also be selected according to the actual situation, which is not described in detail here. The value of Φ2 / Φ3 can be 0.4, 0.5, 0.6, 0.7, 0.75, etc. Of course, the value of Φ2 / Φ3 can also be selected according to the actual situation, which is not described in detail here.

[0048] In this embodiment, the first body 10 includes a connecting plate 101 and a connecting portion 102, wherein the connecting portion 102 is located on the peripheral side of the connecting plate 101, and the connecting plate 101 is located between the first protruding portion 11 and the connecting portion 102. One of the ring edges of the connecting plate 101 is connected to the first protruding portion 11, and the other ring edge is connected to the connecting portion 102. The connecting plate 101 can be selected in other shapes such as annular or square, and the middle part is hollowed out, and is preferably annular in this application.

[0049] Preferably, the connecting plate 101 is provided in a flat plate shape, and when the connecting portion 102 is wrapped around the outer wall of the end of the heat exchanger, the connecting plate 101 abuts against the end of the heat exchanger. During installation, the reaction force when the two abut against each other can give the installer a hand feedback to ensure that the sealing plate is installed in place, avoiding leakage or insufficient pressure resistance due to improper installation. Of course, in other embodiments, the connecting plate 101 can also be set to other shapes, as long as the abutment effect is met, which will not be elaborated here.

[0050] Specifically, the connection part 102 is extended along the first direction on one side away from the connection plate 101. That is, the connection part 102 is a circle of convex edges formed on the connection plate 101. Of course, in other embodiments, the connection part 102 can also be connected to the connection plate 101 by welding or other methods. During installation, the connection part 102 is covered on the outer wall of the end of the heat exchanger and is welded and fixedly connected to the outer wall, which is easy to install and has a simple processing technology.

[0051] Refer to Figure 5 , the height of the connecting part 102 is set to H1, and the height D2 of the second protruding part is set such that D2 > H1. This avoids the protruding height being too shallow, which would result in a relatively weak overall compressive capacity, and ensures that the requirement of the sealing plate not deforming is met.

[0052] Preferably, the first main body 10 and the second main body 20 are of an integral structure, that is to say, the entire sealing plate is integrally formed. The integral forming method can adopt stamping forming, die-casting forming, etc. In this embodiment, die stamping is used, which has low processing costs and high working efficiency.

[0053] Specifically, the second main body 20 is a circular plate body in its initial state, and its position is at the center of the sealing plate. The entire second protruding part 21 protrudes towards the interior of the heat exchanger, and thus the cross-section of the entire second protruding part 21 is an arc-shaped structure. The arc has strong stability and is not easily deformed. Of course, in other embodiments, the second protruding part 21 can also be arranged in a shape similar to "V" or "凵", as long as the usage requirements are met, which will not be elaborated here. Further, the thickness of the sealing plate is set to be greater than or equal to the thickness of the cylinder body 200. When the pressure resistance requirement is met and the corrosion amount is equal, if the thickness of the sealing plate is less than the thickness of the cylinder body 200, the entire sealing plate will be scrapped in advance. Therefore, setting the thickness of the sealing plate to be greater than or equal to the thickness of the cylinder body 200 can effectively avoid the sealing plate being scrapped in advance and improve the service life of the heat exchanger.

[0054] Preferably, the thickness of the sealing plate is set to be equal to the thickness of the cylinder body 200. When the pressure resistance requirement is met and the corrosion amount is equal, if the thickness of the sealing plate is greater than the thickness of the cylinder body 200, when the cylinder body 200 is scrapped, the sealing plate will also be scrapped even if it can still be used. Therefore, setting the thickness of the sealing plate too large will increase waste materials and costs. When the thickness of the sealing plate and the thickness of the cylinder body 200 are set to be equal, both will be scrapped simultaneously, which not only ensures the service life but also ensures the best production cost.

[0055] In this embodiment, the width of the connecting plate 101 is greater than or equal to the thickness of the cylinder body 200, preferably greater, which provides a stronger tactile feedback during installation and ensures proper installation.

[0056] Refer to Figure 6 , the diameter of the cylinder body 200 is set to Φ4, and Φ4 and D2 satisfy the relationship: 0.1 ≤ D2 / Φ3 < 0.25. Whether the value of D2 / Φ3 is too low or too high, the strength of the protrusion will be insufficient. Under the above selection, the strength of the protrusion is ensured and the service life is improved. The value of D2 / Φ3 can be 0.1, 0.15, 0.2, 0.25, etc. Of course, the value of D2 / Φ3 can also be selected according to the actual situation, which will not be elaborated here.

[0057] See Figure 7 The heat exchanger further includes an end plate 202, which is disposed inside the cylinder 200. The end plate 202 is provided with a first through hole 203 and a second through hole 204. The first through hole 203 is used for the heat exchange medium to flow in, and the second through hole 204 is used for the heat exchange medium to flow out. The sealing plate 100, the cylinder 200 and the end plate 202 are surrounded to form a first cavity 205.

[0058] The first through hole 203 and the second through hole 204 form a channel in the first cavity 205. The projection of at least part of the protrusion 100a on the end plate 202 is located between the first through hole 203 and the second through hole 204. By providing the protrusion in the inner cavity, the flow area of ​​the heat exchange medium is reduced, the flow velocity is increased, and the heat exchange medium flows out more evenly.

[0059] Preferably, the projection of the protrusion 100a on the end plate 202 is located on the central axis between the first through hole 203 and the second through hole 204, so that the medium can smoothly enter the inner cavity from the first through hole 203 without being blocked by the protrusion, increase the flow rate before entering the second through hole 204, and improve the heat exchange efficiency.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A heat exchanger, characterized in that: The heat exchanger comprises: A cylinder (200) is formed with a cavity (201); A sealing plate (100) is disposed on the cylinder (200) and seals the end of the cylinder (200); The sealing plate (100) is provided with a protruding portion (100a) protruding along a first direction, and the protruding portion (100a) is located in the cavity (201).

2. The heat exchanger according to claim 1, characterized in that: There are a plurality of the protrusions (100a), and the plurality of the protrusions (100a) are arranged at intervals; or there are a plurality of the protrusions, and the plurality of the protrusions (100a) are arranged continuously.

3. The heat exchanger according to claim 1, characterized in that: The protrusion (100a) is at least defined as a first protrusion (11) and a second protrusion (21); the sealing plate (100) comprises a first body (10) and a second body (20), the first protrusion (11) is arranged on the first body (10), the second protrusion (21) is arranged on the second body (20), and the second body (20) is connected to the first protrusion (11).

4. The heat exchanger according to claim 3, characterized in that Along the first direction, a protruding height of the first protruding portion (11) is different from a protruding height of the second protruding portion (21).

5. The heat exchanger according to claim 3, characterized in that: The protruding height of the first protruding portion (11) is set to D1, and the protruding height of the second protruding portion (21) is set to D2, and D1 and D2 satisfy the relationship: 0.3≤D1 / D2≤0.

8.

6. The heat exchanger according to claim 3, characterized in that: The maximum outer diameter of the first protrusion (11) is set to Φ1, and the maximum outer diameter of the second protrusion (21) is set to Φ2, and Φ1 and Φ2 satisfy the relationship: 1≤Φ1 / Φ2<2.

7. The heat exchanger according to claim 6, characterized in that The maximum outer diameter of the first body (10) is set to Φ3; Φ1 and Φ3 satisfy the relationship: 0.7≤Φ1 / Φ3<1; and / or; Φ2 and Φ3 satisfy the relationship: 0.4≤Φ2 / Φ3<0.

75.

8. The heat exchanger according to any one of claims 3 to 7, characterized in that: The height D1 of the first protrusion (11) satisfies the relationship: 5mm≤D1≤20mm; the slope of the first protrusion (11) is 40%-60%; and / or; the height D2 of the second protrusion (21) satisfies the relationship: 5mm≤D2≤30mm; the slope of the second protrusion (21) is 35%-45%.

9. The heat exchanger according to claim 3, characterized in that: The first main body (10) comprises a connecting plate (101) and a connecting portion (102), wherein the connecting portion (102) is located on the peripheral side of the connecting plate (101), and the connecting plate (101) is located between the first protruding portion (11) and the connecting portion (102), and is respectively connected to the first protruding portion (11) and the connecting portion (102).

10. The heat exchanger according to claim 1, characterized in that The heat exchanger further comprises an end plate (202) disposed inside the cylinder (200), the end plate (202) being provided with a first through hole (203) for the inflow of a heat exchange medium and a second through hole (204) for the outflow of the heat exchange medium, the sealing plate (100), the cylinder (200) and the end plate (202) being arranged to form a first cavity (205), the first through hole (203) and the second through hole (204) forming a channel in the first cavity (205), and at least a portion of the projection (100a) on the end plate (202) being located between the first through hole (203) and the second through hole (204).

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