Box-type laminated heat exchanger with novel structure
By adding a reinforced structure to the outer periphery of the box-shaped stacked heat exchanger, the problem of metal structure brittleness of the brazing seam is solved, the mechanical properties and stability of the equipment are improved, and assembly and fastening needs are met.
Patent Information
- Application Number
- CN202422530921.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The metal structure of the brazing seams of existing box-type stacked heat exchangers is weak, especially at the brazing seams on the upper and lower surfaces of the high-mounted plates, which affects the stability of the equipment and assembly and tightness.
Reinforced structures are added to the outer periphery of the box-shaped stacked heat exchanger, including strips with cross-sections such as grooves, angle steel or arc, and fixed to the outer periphery of the high pad plate by welding to enhance the stability of the structure.
It improves the overall mechanical performance of the box-shaped stacked heat exchanger, protects the high-mounted brazing seam, meets assembly and fastening requirements, and enhances the stability of the equipment.
Smart Images
Figure CN223228846U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heat exchange structure, in particular to a box-type stacked heat exchanger with a new structure. Background Art
[0002] The new box-type stacked heat exchanger has a novel structure and is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery, which are stacked together in sequence. The inclined surfaces that are close to each other form an external seal of a closed inner flow channel. Each box-type heat exchange plate has a heat exchange structure for inter-wall heat exchange. There are high pad structures at both ends of the open outer flow channel heat exchange structure, and low pad structures at both ends of the closed inner flow channel heat exchange structure. The outer flow channel heat exchange structure and the inner flow channel heat exchange structure are both located in the middle of each box-type heat exchange plate. Relative to the heat exchange medium for inter-wall heat exchange, one type of heat exchange medium flows through the open outer flow channel heat exchange structure for external circulation, while the other type of heat exchange medium flows through the through holes in the high pad and flows through each closed inner flow channel to form an inner flow channel heat exchange structure. The inner flow channel heat exchange structure and the outer flow channel heat exchange structure are in a cross-wall heat exchange.
[0003] The prior art of the box-type stacked heat exchanger with a new structure has been disclosed in a patent entitled "Box-type stacked heat exchanger with an open external circulation heat exchange structure" and patent application number 2022204815887. However, the disclosed box-type stacked heat exchanger has a defect, that is, the metal structure of the brazing seam caused by brazing is generally a casting body, and the mechanical properties of such a brazing metal structure are weak and the brittleness is strong, especially in the upper and lower brazing seams of the high pad of the box-type stacked heat exchanger with an open external circulation heat exchange structure. Summary of the Invention
[0004] The main purpose of the present invention is to realize that the brazing seam metal structure caused by brazing is generally a casting body, and such brazing metal structure has weak mechanical properties and strong brittleness, especially in the upper and lower brazing seams of the high pads in the box-shaped stacked heat exchanger with an open external circulation heat exchange structure. Here, a reinforcement structure is added to the outer periphery of the box-shaped stacked heat exchanger with an open external circulation heat exchange structure. The added reinforcement structure also helps to assemble and fasten the entire box-shaped stacked heat exchanger with the outside world.
[0005] The purpose of the present utility model is achieved by adopting the following scheme: a box-type stacked heat exchanger of a novel structure is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery, which are stacked in sequence, and the inclined surfaces of each box-type heat exchange plate and each other are tightly attached to form an external seal of a closed inner flow channel. A heat exchange structure for partition heat exchange is provided on each box-type heat exchange plate. A high pad structure is provided at both ends of the open outer flow channel heat exchange structure, and a low pad structure is provided at both ends of the closed inner flow channel heat exchange structure. The outer flow channel heat exchange structure and the inner flow channel heat exchange structure are both located in the middle of each box-type heat exchange plate, relative to the partition wall heat exchange structure. Hot heat exchange medium, one type of heat exchange medium flows through the outer flow channel heat exchange structure with open external circulation, while the other type of heat exchange medium flows through the through holes in the high pad and flows through each closed inner flow channel to form an inner flow channel heat exchange structure. The inner flow channel heat exchange structure and the outer flow channel heat exchange structure are in a cross-type partition heat exchange. It is characterized in that a reinforcement structure is added to the outer periphery of the box-shaped stacked heat exchanger with an open external circulation heat exchange structure, and the reinforcement structure has a number of protruding strips, and the ends of these strips are fixedly welded to the outer periphery of the high pad structure by welding.
[0006] The cross section of this reinforcement structure is channel-shaped.
[0007] The cross-section of this reinforcement structure is similar to that of angle steel.
[0008] The cross section of this reinforcement structure is arc-shaped.
[0009] The cross-section of the reinforcement structure can be of any shape.
[0010] The cross-sections of all reinforcement structures include but are not limited to the three types mentioned above.
[0011] The reinforcement structures with different cross sections can be fixed to the outer periphery of the box-type stacked heat exchanger with an open external circulation heat exchange structure by riveting.
[0012] The reinforcement structures with different cross sections can be fixed to the outer periphery of the box-type stacked heat exchanger with an open external circulation heat exchange structure by means of bolt fastening.
[0013] It is designed, manufactured and added to various reinforcement structures with different cross-sections, which is convenient for the box-shaped stacked heat exchanger and the reinforcement structure of the outer periphery, and the overall assembly and fastening components to the outside world.
[0014] The utility model has the following advantages and positive effects:
[0015] A reinforcement structure is added to the outer periphery of the box-shaped stacked heat exchanger with an open external circulation heat exchange structure, which can protect the entire box-shaped stacked heat exchanger, especially the upper and lower brazing seams of the high pads therein.
[0016] A reinforcement structure is added to the outer periphery of the box-shaped stacked heat exchanger with an open external circulation heat exchange structure, which can meet the requirements of external assembly and fastening of the entire box-shaped stacked heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Figure 1 Front view of a box-shaped stacked heat exchanger with an open external circulation heat exchange structure with a reinforcement structure added to the outer periphery
[0019] Figure 2 for Figure 1 Side view
[0020] Figure 3 for Figure 1 AA section view DETAILED DESCRIPTION
[0021] The following is further explained with reference to the embodiments and figures;
[0022] In all the figures, the symbols 1 and 1a indicate the heat exchange structure in the inner flow channel; the symbols 2 and 2a indicate the short pads in each layer of the inner flow channel; the symbols 3, 3a, 3b, 3c, 3d, 3e, and 3f indicate the reinforcement structures added to the outer periphery of the box-shaped stacked heat exchanger with an open external circulation heat exchange structure, among which the symbols 3a, 3b, 3c, and 3f indicate the reinforcement structures with groove cross-sections, the symbols 3 and 3d indicate the reinforcement structures with cross-sections similar to those of angle steel, and the symbol 3e indicates the reinforcement structures with arc cross-sections; the symbols 4, 4a, 4b, 4c, 4d, and 4e indicate the reinforcement structures 3, 3a, 3b, 3c, 3d, 3e, and 3f indicate the reinforcement structures with groove cross-sections, the symbols 3 and 3d indicate the reinforcement structures with cross-sections similar to those of angle steel, and the symbol 3e indicates the reinforcement structures with arc cross-sections. Welding seams between the protruding strips on 3f and the high pads 5, 5a, 5b, 5c, 5d, 5e, 5f, 5g; the marks 5, 5a, 5b, 5c, 5d, 5e, 5f, 5g all indicate high pads located on both sides of the open external circulation heat exchange structure 8, 8a, 8b, 8c, 8d; the marks 6, 6a, 6b all indicate box-type heat exchange plates with short bevels; the marks 7, 7a, 7b, 7c, 7d all indicate box-type heat exchange plates with long bevels, the marks 8, 8a, 8b, 8c, 8d all indicate heat exchange structures with open external circulation, the mark 9 indicates the flow direction of heat exchange medium A in the inner flow channel, and the mark 10 indicates the flow direction of heat exchange medium B in the outer flow channel.
[0023] exist Figure 1 In the figure, the left side shows the front partial appearance of the box-type stacked heat exchanger with an open external circulation heat exchange structure with the reinforcement structure 3a added, and the right side shows the front partial cross-section of the box-type stacked heat exchanger with the reinforcement structure 3 and the open external circulation heat exchange structure.
[0024] Combine Figure 1 、 Figure 2 and Figure 3 As can be seen, the ends of the box-type stacked heat exchanger with an open external circulation heat exchange structure are protected by reinforcement structures 3, 3a, 3b, 3c, 3d, 3e, and 3f of various cross-sections. Furthermore, the various reinforcement structures 3, 3a, 3b, 3c, 3d, 3e, and 3f are welded together using extended strips and high pads 5, 5a, 5b, 5c, 5d, 5e, 5f, and 5g, thereby stabilizing the reinforcement structures 3, 3a, 3b, 3c, 3d, 3e, and 3f. The aforementioned "welding" methods include, but are not limited to, brazing, fusion welding, and resistance spot welding.
[0025] exist Figure 2 As can be seen in the figure, the width of the high pads 5c, 5d, 5e is smaller than the width of the open external circulation heat exchange structure 8b, 8c, so in the side view Figure 2 In the figure, both the high pads 5c, 5d, and 5e and the open external circulation heat exchange structures 8b and 8c can be seen.
[0026] exist Figure 1 and Figure 3 It can be found that the flow direction 9 of the heat exchange medium A in the inner flow channel and the flow direction 10 of the heat exchange medium B in the outer flow channel form a cross-type heat exchange structure.
[0027] exist Figure 3 Reinforcement structures of different cross-sections can be seen in the figure. A groove-type reinforcement structure 3f is shown on the left side of the figure, a reinforcement structure 3d with a cross-section similar to that of an angle iron is shown on the right side of the figure, and an arc-shaped reinforcement structure 3e is also shown. This arc-shaped reinforcement structure includes but is not limited to a quarter-circular arc, and can also be a semi-circular arc, a half-elliptical arc, etc.
[0028] Figure 3 The reinforcement structures 3d, 3e, and 3f in the figure all have protruding strips and high pads 5f and 5g welded together 4b, 4c, 4d, and 4e to stabilize the reinforcement structures 3d, 3e, and 3f. Figure 3 The different reinforcement structures 3d, 3e, and 3f on the left and right sides are only for Figure 3 In actual application, the reinforcement structures 3d, 3e, and 3f around each product are generally symmetrical and consistent. It can also be considered that products of different sizes and uses can be selected and not limited to Figure 3 As shown, there are reinforcement structures with different forms and cross-sections.
[0029] because Figure 3 yes Figure 1AA profile, so Figure 3 The projection of the box-shaped part in FIG should appear to have short inclined box-shaped heat exchange plates 6b.
[0030] For the sake of simplicity and convenience of the drawings in the specification, only words are used here to describe, including but not limited to, riveting or bolting to secure various reinforcement structures to the box-type stacked heat exchanger with an open external circulation heat exchange structure.
[0031] For the sake of simplicity and convenience of the drawings in the specification, only text is used here to describe that various reinforcement structures can be designed, manufactured and added with assembly and fastening components that can meet the overall external orientation of the box-shaped stacked heat exchanger.
[0032] Finally, it should be noted that the bottom surfaces of the various bevels that form the bevel seal around the inner flow channel will naturally sink during brazing due to the melting of the brazing material. This is especially true for the short beveled box-type heat exchange plates labeled 6, 6a, and 6b. Due to the constraints of the bevels, the bottom surfaces of the short beveled box-type heat exchange plates labeled 6, 6a, and 6b will no longer sink after sinking to a certain position, naturally and stably remaining there. This also creates a stable and naturally existing plate spacing of a certain height between the long beveled box-type heat exchange plates labeled 7, 7a, 7b, 7c, and 7d. The value of this plate spacing is related to the melting rate of the brazing material on each heat exchange plate. Furthermore, since the enclosed inner flow channel heat exchange structures of this new box-type stacked heat exchanger have only an inlet and an outlet, while ensuring the brazing seal of the enclosed inner flow channel perimeter bevels, in order to reduce costs, it can be considered that the short spacers in the inner flow channels labeled 2 and 2a can also be eliminated.
Claims
1. A novel box-type stacked heat exchanger is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery, which are stacked in sequence. The inclined surfaces, which are in close contact with each other, form an external seal for a closed inner flow channel. Each box-type heat exchange plate has a heat exchange structure for performing inter-wall heat exchange. There are high pad structures at both ends of the open outer flow channel heat exchange structure, and low pad structures at both ends of the closed inner flow channel heat exchange structure. The outer flow channel heat exchange structure and the inner flow channel heat exchange structure are both located in the middle of each box-type heat exchange plate. For the heat exchange mediums for inter-wall heat exchange, one type of heat exchange medium flows through the open outer flow channel heat exchange structure, while the other type of heat exchange medium flows through the through holes in the high pads and flows through each closed inner flow channel, forming an inner flow channel heat exchange structure. The inner flow channel heat exchange structure and the outer flow channel heat exchange structure form a cross-inter-wall heat exchange structure, which is characterized in that: A reinforcement structure is added to the outer periphery of the box-shaped stacked heat exchanger with an open external circulation heat exchange structure, and the reinforcement structure has a number of protruding strips, the ends of which are fixedly welded to the outer periphery of the high pad structure.
2. The novel structure of the box-type stacked heat exchanger according to claim 1 is characterized in that: The cross section of this reinforcement structure is channel-shaped.
3. The novel structure of the box-type stacked heat exchanger according to claim 1 is characterized in that: The cross-section of this reinforcement structure is similar to that of angle steel.
4. The novel structure of the box-type stacked heat exchanger according to claim 1 is characterized in that: The cross-section of the reinforcement structure can be of any shape.
5. The novel structure of the box-type stacked heat exchanger according to claim 1 is characterized in that: The reinforcement structures with different cross sections can be fixed to the outer periphery of the box-type stacked heat exchanger with an open external circulation heat exchange structure by riveting.
6. The novel structure of the box-type stacked heat exchanger according to claim 1 is characterized in that: The reinforcement structures with different cross sections can be fixed to the outer periphery of the box-type stacked heat exchanger with an open external circulation heat exchange structure by means of bolt fastening.
7. The novel box-type stacked heat exchanger according to claim 1 is characterized in that: It is designed, manufactured and added to various reinforcement structures with different cross-sections, which is convenient for the box-shaped stacked heat exchanger and the reinforcement structure of the outer periphery, and the overall assembly and fastening components to the outside world.