Leakage prevention and fixed installation method of the heat exchange core of the total heat exchanger

Abstract

The present invention relates to a method for preventing air leakage and fixedly installing a heat exchange core of a total heat exchanger. In this method, the heat exchange core is arranged in a shell by using a special fixed installation structure. The special fixed installation structure includes a fixing member A and a fixing member B fixedly arranged inside the shell, and the fixing member A and the fixing member B are arranged parallel to each other. The fixing member A is in the structure of a rectangular square tube, and an interface for plugging and matching with the heat exchange core is arranged on the tube wall connected to the heat exchange core. The fixing member B includes a flat plate and a filter chip mounting plate bent relative to the flat plate, and a multi-branch fixing body extending along the length direction of the fixing member B is arranged on the side surface of the flat plate close to the filter chip mounting plate. The structure of the present invention is ingeniously designed, with low manufacturing cost. The function of multi-point limit is realized by a simple structure, improving safety; it has strong adaptability and interchangeability, good integration performance, reduces the floor space, is conducive to popularization, has high installation accuracy and good sealing performance.

Description

Technical Field

[0001] The present invention relates to the production technology of total heat exchangers, and particularly to a method for leak-proof fixing and installation of a heat exchange core of a total heat exchanger and a heat exchange core assembly using the fixing and installation structure. Background Art

[0002] A total heat exchanger is an air purification device that can discharge indoor air through filtration and introduce outdoor air into the room after filtration to achieve air replacement between indoors and outdoors. The total heat exchanger is mostly in a cuboid structure, with an air inlet end and an air outlet end provided at both end faces. The gas entering from the air inlet end at one side face passes through the heat exchange core and is discharged from the corresponding air outlet end at the other end. During the working process, the air to be discharged in the casing can be heat-exchanged with the air to be input through the heat exchange core, which can play a role in cooling or heat preservation in hot summer or cold winter.

[0003] As the core component of the total heat exchanger, the stability of the heat exchange core and the airtightness of the two air supply channels are very important. During actual production, heat exchange chips and heat exchange membranes are alternately stacked. The first layer and the last layer are both heat exchange chips. The guiding directions of adjacent heat exchange chips are different. Buckles are provided on both the upper and lower sides of the end of the flow guide strip of the heat exchange chip, and buckle grooves matching the size of the buckles are provided on both the upper and lower sides of the edges on the other two sides. When the heat exchange chips and heat exchange membranes are alternately stacked, the buckles press the heat exchange membranes and the buckle grooves, with good sealing performance and no air leakage phenomenon. After stacking, the heat exchange chips and heat exchange membranes are combined, and their endpoints are fastened by bolts to form a heat exchange core. The heat exchange core has channels in two directions, and gas can enter and pass through the heat exchanger in two directions without confusion. See Figure 11 , the existing installation method of the heat exchange core is usually to directly snap the heat exchange 3a into the corresponding card slots 1a, 2a of the total heat exchanger. On the one hand, this leads to the need for mutual adaptation between the total heat exchanger and the heat exchange core, with low fault tolerance in design and assembly. On the other hand, due to the limited length of the buckle groove (the buckle groove cannot extend to the endpoint of the heat exchange chip), there are problems of air leakage and difficulty in alignment at the side edges of the heat exchange core, affecting the airtightness and stability of the heat exchange core, and further affecting the performance of the total heat exchanger.

[0004] Moreover, the total heat exchanger needs to install filter chips, but due to the narrow internal space structure, it is difficult to operate both the installation and fixation, which is not conducive to industrial production and is also an urgent problem to be solved in this field. Summary of the Invention

[0005] The object of the present invention is to provide a method for preventing air leakage and fixedly installing a heat exchange core of a total heat exchanger. The method for preventing air leakage and fixedly installing the heat exchange core of the total heat exchanger of the present invention has a clever structural design, low manufacturing cost, realizes the function of multi-point limiting with a simple structure, prevents the heat exchange core from loosening or shaking during the operation of the heat exchanger, and improves safety; it has strong adaptability. There is no connection between the A fixing member and the B fixing member, and their relative positions can be changed according to the size of the heat exchange core, adapting to different models of heat exchange cores; it has good integration performance. One side of the B fixing member is provided with a bent filter chip mounting plate for clamping and fixing the filter chip. The assembly parts are single and the operability is good. The filter chip and the heat exchange core are connected as a whole, improving the integration, reducing the floor space, and being conducive to popularization; the installation accuracy is high and the sealing performance is strong. Through the insertion interfaces between the A fixing member, the B fixing member and the heat exchange core, the installation accuracy of the heat exchange chip is improved, and gas can also be prevented from flowing out from these two places, improving the overall sealing performance. The present invention also provides a heat exchange core using the method for preventing air leakage and fixedly installing the heat exchange core of the total heat exchanger. It has fewer constituent elements, simple assembly, and lower manufacturing cost.

[0006] The technical solution of the present invention: A method for preventing air leakage and fixedly installing a heat exchange core of a total heat exchanger. This method uses a special fixing and installing structure to arrange the heat exchange core in the shell; the special fixing and installing structure includes an A fixing member and a B fixing member fixedly arranged inside the shell, and the A fixing member and the B fixing member are arranged parallel to each other; the A fixing member is of a rectangular square tube structure, and an interface for plugging and matching with the heat exchange core is provided on the tube wall in contact with the heat exchange core; the B fixing member includes a flat plate and a filter chip mounting plate bent relative to the flat plate. On the side of the flat plate close to the filter chip mounting plate, there is a multi-branch fixing body extending along the length direction of the B fixing member. The multi-branch fixing body is composed of an A fixing plate close to the filter chip mounting plate and a B fixing plate far from the filter chip mounting plate. The included angle between the A fixing plate and the B fixing plate is the same as the included angle at the pointed point in the horizontal direction of the heat exchange core, and an interface for plugging and matching with the heat exchange core is provided between the A fixing plate and the B fixing plate.

[0007] Compared with the prior art, the method for preventing air leakage and fixedly installing the heat exchange core of the total heat exchanger of the present invention has the following remarkable improvements:

[0008] 1) The structural design is clever and the manufacturing cost is low. Through the sliding fit between the A fixing member, the B fixing member and the heat exchange core, the function of multi-point limiting is realized with a simple structure, preventing the heat exchange core from loosening or shaking during the operation of the heat exchanger, and improving safety;

[0009] 2) It has strong adaptability. There is no connection between the A fixing member and the B fixing member, and their relative positions can be changed according to the size of the heat exchange core, adapting to different models of heat exchange cores;

[0010] 3) Good integration performance. On one side of the B fixing part, there is a bent filter chip mounting plate for clamping and fixing the filter chip. The assembly is simple and has good operability. Connecting the filter chip and the heat exchange core as a whole improves the integration, reduces the floor space, and is conducive to popularization;

[0011] 4) High installation accuracy and strong sealing performance. There are inserted interfaces between the A fixing part, the B fixing part and the heat exchange core, which improves the installation accuracy of the heat exchange chip, ensures that the side planes of the stacked heat exchange chips are aligned, and improves the sealing performance of the side planes; By surrounding the tip points and non-overlapping planes of the heat exchange core with the A fixing part and the B fixing part, it can prevent gas from flowing out from these two places, improving the overall sealing performance.

[0012] As an optimization, the bottom surface of the A fixing part is provided with a longitudinally arranged A connecting part that matches the heat exchange core, and a notch penetrating the rectangular square tube is provided on the side surface of the A fixing part opposite to the bottom surface. The notch on the A fixing part can facilitate the insertion connection with other connecting parts on the one hand, and make the A fixing part have a certain elasticity on the other hand. When there is a small dimensional error at the connection between the A connecting part and the heat exchange core, it can be compensated by the deformation of the A fixing part.

[0013] As an optimization, the A fixing plate is provided with a longitudinally arranged A fixing protrusion in the direction close to the filter chip mounting plate, and a longitudinally arranged B connecting part that matches the heat exchange core is provided between the A fixing plate and the B fixing plate. The A fixing protrusion can play a role in limiting the filter chip, preventing the filter chip from being squeezed into the angle formed by the filter chip mounting plate and the A fixing plate during the installation of the filter chip, resulting in damage.

[0014] As an optimization, the A connecting part is a protrusion or a groove, and the B connecting part is a protrusion or a groove. When the A connecting part and the B connecting part are protrusions, the connection part of the heat exchange core that matches them is a groove; when the A connecting part and the B connecting part are grooves, the connection part of the heat exchange core that matches them is a protrusion.

[0015] As an optimization, the A connecting part is a protrusion and the B connecting part is a protrusion. The fixed installation structure has high strength and is more firmly and stably connected to the heat exchange core.

[0016] As an optimization, the number of the A connecting parts is 2, and the number of the B connecting parts is 1. The structure is simple, easy to process, has low cost, and does not affect the sealing performance of the heat exchange core.

[0017] As an optimization, the filter chip mounting plate is parallel to the A fixing plate. The filter chip mounting plate and the A fixing plate are used in cooperation to clamp the filter chip, and the installation stability is good.

[0018] As an optimization, the A fixing part and the B fixing part are made of high-density polyethylene. High-density polyethylene has good chemical stability, ensuring the long-term use of the installation structure; it also has high mechanical strength and excellent heat resistance, cold resistance, oil resistance, chemical resistance and corrosion resistance, enabling the installation structure to withstand the environment of wind and water mist in the heat exchanger for a long time; and its light weight also places no weight burden on the heat exchanger. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the A fixing part in Embodiment 1;

[0020] Figure 2 is a schematic structural diagram of the B fixing part in Embodiment 1;

[0021] Figure 3 is a schematic structural diagram of the heat exchange core in Embodiment 1;

[0022] Figure 4 is Figure 3 a partially enlarged view of the A circular part in;

[0023] Figure 5 is a schematic structural diagram of the A fixing part in Embodiment 2;

[0024] Figure 6 is a schematic structural diagram of the B fixing part in Embodiment 2;

[0025] Figure 7 is a schematic structural diagram of the heat exchange core in Embodiment 2;

[0026] Figure 8 is Figure 7 a partially enlarged view of the B circular part in;

[0027] Figure 9 is an assembly schematic diagram of three heat exchange cores fixed by the anti-air leakage fixing installation method of the total heat exchanger heat exchange core;

[0028] Figure 10 is a front projection view of the heat exchange core in Embodiment 3;

[0029] Figure 11 is an installation diagram of the heat exchange core in the background art.

[0030] The reference numerals in the drawings are: 1 - A fixing part, 11 - bottom surface, 12 - notch, 13 - A connecting part; 2 - B fixing part, 21 - flat plate, 22 - filter chip mounting plate, 23 - multi-branch fixing body, 231 - A fixing plate, 2311 - A fixing protrusion, 232 - B fixing plate, 233 - B connecting part; 3 - heat exchange core; 4 - housing. Detailed Description of the Invention

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments (examples), but it shall not be used as a basis for limiting the present invention.

[0032] In actual production, the heat exchange chips and the heat exchange membranes are alternately stacked, with heat exchange chips at both the first layer and the last layer. The combined body of the stacked heat exchange chips and heat exchange membranes is fastened at its ends by bolts to form a heat exchange core. The flow directions of the guiding strips of two adjacent heat exchange cores are different, that is, the flow directions of the channel gases in two adjacent layers are different.

[0033] Example 1

[0034] See Figures 1-4 with respect to Figure 3 In the anti-air leakage fixed installation method of the total heat exchanger heat exchange core for the hexagonal heat exchange core in, this method uses a special fixed installation structure to arrange the heat exchange core 3 between the A fixing member 1 and the B fixing member 2 inside the housing 4. The A fixing member 1 and the B fixing member 2 are arranged parallel to each other; the A fixing member 1 is in the structure of a rectangular square tube. The bottom surface 11 of the A fixing member 1 is provided with a longitudinally arranged A connecting portion 13 that matches the heat exchange core 3. A notch 12 penetrating the rectangular square tube is provided on the side surface of the A fixing member 1 opposite to the bottom surface 11; the B fixing member 2 includes a flat plate 21 and a filter chip mounting plate 22 bent relative to the flat plate 21. A multi-branch fixing body 23 extending along the length direction of the B fixing member 2 is provided on the side surface of the flat plate 21 close to the filter chip mounting plate 22. The multi-branch fixing body 23 is composed of an A fixing plate 231 close to the filter chip mounting plate 22 and a B fixing plate 232 far from the filter chip mounting plate 22. The included angle between the A fixing plate 231 and the B fixing plate 232 is the same as the included angle at the pointed point in the horizontal direction of the heat exchange core 3. A longitudinally arranged A fixing protrusion 2311 is provided on the A fixing plate 231 in the direction close to the filter chip mounting plate 22. A longitudinally arranged B connecting portion 233 that matches the heat exchange core 3 is provided between the A fixing plate 231 and the B fixing plate 232; the A connecting portion 13 is two protrusions, and the B connecting portion 233 is one protrusion; the A fixing member 1 and the B fixing member 2 are made of high-density polyethylene material.

[0035] Figure 9 is an assembly schematic diagram of three consecutive heat exchange chips fixed and installed by the anti-air leakage fixed installation method of the total heat exchanger heat exchange core. When the heat exchange chips cooperate with each other, the heat exchange membrane is clamped between the mutually overlapping heat exchange chips, playing a role in separating the ventilation channels.

[0036] Example 2

[0037] See Figures 5-8 with respect to Figure 3The heat exchange core of the middle hexagon, the difference between the anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger and the fixed installation structure in Embodiment 1 lies in that: the A connecting part 13 is two grooves, and the B connecting part 233 is one groove. Compared with Embodiment 1, the grooves on the A connecting part 13 and the B connecting part 233 are easier to process, which is beneficial to reducing costs and shortening the processing period.

[0038] Embodiment 3

[0039] Relative to Figure 10 The heat exchange core of the middle quadrilateral, the difference between the anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger and the fixed installation structure in Embodiment 1 lies in that: the A fixing part 1 is a square tube structure, and the A connecting part 13 is one protrusion. There is limited space at the upper and lower ends of the quadrilateral heat exchange core, and only one protrusion installation space can be provided for the A fixing part.

[0040] During assembly, users can select the anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger according to the shape requirements of the heat exchange core.

[0041] The above general description of the invention involved in this application and the description of its specific implementation manners should not be construed as a limitation on the technical solution of the invention. Those skilled in the art can, based on the disclosure of this application, without departing from the constituent elements of the invention involved, add, subtract, or combine the disclosed technical features in the above general description or / and specific implementation manners (including embodiments) to form other technical solutions within the protection scope of this application.

Claims

1. A method for fixedly installing a leakage-proof air exchanger core of a total heat exchanger, characterized in that: This method uses a special fixed installation structure to set the heat exchange core (3) inside the housing (4); the special fixed installation structure includes a fixed A fixing member (1) and a B fixing member (2) inside the housing (4), and the A fixing member (1) and the B fixing member (2) are arranged in parallel; the A fixing member (1) is in the structure of a rectangular square tube, and an interface for plugging and matching with the heat exchange core (3) is provided on the tube wall connected to the heat exchange core (3); the B fixing member (2) includes a flat plate (21) and a filter chip mounting plate (22) bent relative to the flat plate (21), a multi-branch fixing body (23) extending along the length direction of the B fixing member (2) is provided on the side of the flat plate (21) close to the filter chip mounting plate (22), the multi-branch fixing body (23) is composed of an A fixing plate (231) close to the filter chip mounting plate (22) and a B fixing plate (232) far from the filter chip mounting plate (22), the included angle between the A fixing plate (231) and the B fixing plate (232) is the same as the included angle at the pointed point in the horizontal direction of the heat exchange core (3), and an interface for plugging and matching with the heat exchange core (3) is provided between the A fixing plate (231) and the B fixing plate (232); a through-length A connecting portion (13) matching with the heat exchange core (3) is provided on the bottom surface (11) of the A fixing member (1), and a notch (12) penetrating the rectangular square tube is provided on the side surface of the A fixing member (1) opposite to the bottom surface (11).

2. The anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger according to claim 1, characterized in that: A through-length A fixing protrusion (2311) is provided on the A fixing plate (231) in the direction close to the filter chip mounting plate (22), and a through-length B connecting portion (233) matching with the heat exchange core (3) is provided between the A fixing plate (231) and the B fixing plate (232).

3. The anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger according to claim 1 or 2, characterized in that: The A connecting portion (13) is a protrusion or a groove, and the B connecting portion (233) is a protrusion or a groove.

4. The anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger according to claim 3, characterized in that: The A connecting portion (13) is a protrusion, and the B connecting portion (233) is a protrusion.

5. The anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger according to claim 1 or 2, characterized in that: The number of the A connecting portions (13) is two, and the number of the B connecting portions (233) is one.

6. The anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger according to claim 1 or 2, characterized in that: The filter chip mounting plate (22) is parallel to the A fixing plate (231).

7. The anti-air leakage fixed installation method of the heat exchange core of the total heat exchanger according to claim 1 or 2, characterized in that: The A fixing member (1) and the B fixing member (2) are made of high-density polyethylene.

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