Baffles, baffle pairs, gaskets and heat exchangers

Abstract

The present application provides a baffle, a baffle pair, a sealing gasket and a heat exchanger, wherein the baffle comprises a rectangular plate body, a first folded edge portion folded upward is provided at one long side of the plate body, and a receiving groove is provided at the other long side of the plate body, the opening of the receiving groove faces away from the first folded edge portion; a second folded edge portion folded upward is provided at each of the two short sides of the plate body, the second folded edge portion is used to cooperate with the slot structure of the heat exchanger, the folding angle of the second folded edge portion is smaller than the folding angle of the first folded edge portion, the second folded edge portion is connected to the receiving groove to form a connected receiving cavity, which cooperates with the sealing gasket. The baffle, baffle pair, sealing gasket and heat exchanger provided by the present application have a simple structure, are easy to manufacture, and are easy to disassemble and install. At the same time, they can ensure the sealing effect of the heat exchanger and improve its service life.

Description

Technical Field

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

[0002] Welded plate heat exchangers are usually assembled and welded into plate pairs, and then the plate pairs, liners, partitions, pressure plates and other components are assembled, welded and clamped in a specific way to form the final product. Compared with detachable plate heat exchangers, welded plate heat exchangers are widely used because they are more suitable for high-solid content media, have higher safety, flexible process combinations and a wider range of processing capacity.

[0003] Among existing welded plate heat exchangers, plate-and-frame heat exchangers are gaining increasing attention for use in more demanding operating conditions because they inherit the high heat transfer performance of the herringbone corrugations of detachable plate heat exchangers, while also offering greater resistance to high temperatures and high pressures, and ease of disassembly, cleaning, and maintenance. However, in some multi-pass operating conditions with high pressure, low flow rates, and large temperature differences, existing multi-pass plate-and-frame heat exchangers often experience leakage caused by gaps between the assembly baffles of each pass, resulting in a decrease in the equipment's heat transfer performance and failure to meet expected requirements.

[0004] In some technologies, the baffles are directly welded to the frame plates. The disadvantage is that the multi-flow baffles and frame plates are welded into an integral structure, which is difficult to disassemble and assemble, and is not conducive to cleaning and maintenance. At the same time, there are gaps between the rigid mating parts. For example, there will be gaps between the baffles and the core plate bundles, which will lead to leakage and poor heat transfer performance of the equipment. Overly tight design dimensions are very inconvenient for disassembly and maintenance of the equipment, while overly loose design dimensions are likely to lead to increased leakage during use, making the equipment unable to meet the working conditions.

[0005] In some other technologies, the baffles are fixed to the frame plates on both sides by means of an inlay method. This makes it easier to disassemble and assemble the baffle assembly during equipment maintenance. However, the inlay fixing method will result in a matching gap at each connection point. At the same time, the deformation of the baffle caused by the pressure difference of each process during use will also increase the gap between the baffle and the frame plate, which will also lead to significant leakage of the equipment and reduce the heat transfer performance.

[0006] Therefore, there is an urgent need for a baffle that can improve the leakage phenomenon and is easy to assemble. Summary of the Invention

[0007] In view of this, the purpose of the present application is to propose a baffle, a baffle pair, a sealing gasket and a heat exchanger to solve the related problems mentioned in the background technology.

[0008] In the first aspect of the present application, a deflector is provided, comprising a rectangular plate body, a first folded edge portion folded upward is provided at one long side of the plate body, and a receiving groove is provided at the other long side of the plate body, the opening of the receiving groove is away from the first folded edge portion; a second folded edge portion folded upward is provided at each of the two short sides of the plate body, the second folded edge portion is used to cooperate with the slot structure of the heat exchanger, the folding angle of the second folded edge portion is smaller than the folding angle of the first folded edge portion, the second folded edge portion is connected to the receiving groove to form a connected receiving cavity, which cooperates with the sealing gasket.

[0009] Furthermore, a third folded edge portion folded upward is provided on a side of the second folded edge portion away from the plate body, and the third folded edge portion is used to cooperate with the slot structure of the heat exchanger.

[0010] Furthermore, the height of the third folded edge portion gradually decreases along the direction from the first folded edge portion to the accommodating groove.

[0011] Furthermore, the folding angle of the first folding portion is greater than or equal to 60° and less than 90°; the folding angle of the second folding portion is greater than or equal to 10° and less than 45°; the folding angle of the third folding portion is greater than or equal to 80° and less than 90°; the angle between the side of the third folding portion away from the plate body and the plate body is greater than or equal to 1° and less than 10°.

[0012] Furthermore, the plate body is provided with corrugations in the length direction, and a reinforcing rib is connected between at least one of the corrugations and the second folded edge portion.

[0013] The second aspect of the present application provides a baffle pair, comprising two oppositely arranged baffles as described in the first aspect above, the receiving grooves of the two baffles are connected to form a first receiving cavity, the second folded edge portions of the two baffles are connected to form a second receiving cavity, and the first receiving cavity and the second receiving cavity are used to cooperate with the sealing gasket.

[0014] The third aspect of the present application provides a sealing gasket, including a first sub-gasket, with a second sub-gasket vertically connected to both sides of the first sub-gasket, the first sub-gasket being used to cooperate with the first accommodating cavity of the baffle pair described in the second aspect, and the second sub-gasket being used to cooperate with the second accommodating cavity of the baffle pair.

[0015] The fourth aspect of the present application provides a heat exchanger, comprising a frame, in which a core plate bundle is provided, the frame being provided with a baffle pair as described in the second aspect above, the first accommodating cavity of the baffle pair being arranged toward the core plate bundle, the frame comprising relatively arranged frame plates, the frame plates being connected with a slot structure, the second folded edge portion of the baffle pair being plugged into and fitted with the slot structure, and the sealing gasket as described in the third aspect above being installed between the frame plate, the core plate bundle and the baffle pair.

[0016] Furthermore, the baffle pair includes a third folding portion, the slot structure includes two guide plates arranged relatively spaced apart, the guide plate includes a base plate, one side of the base plate is connected to the frame plate, and the other side is folded downward to form a fourth folding portion, and the fourth folding portion cooperates with the third folding portion; the side of the fourth folding portion away from the base plate is folded upward to form a fifth folding portion, and the fifth folding portion cooperates with the second folding portion.

[0017] Furthermore, the direction from the frame to the core plate bundle is a first direction, the spacing between the fifth folded edge portions corresponding to the two guide plates of the slot structure remains consistent along the first direction, and at the opening of the slot structure, the fifth folded edge portion is interference fit with the second folded edge portion; the height of the third folded edge portion gradually decreases along the first direction, and the height of the fourth folded edge portion gradually decreases along the first direction, the minimum height of the third folded edge portion is a first length, the minimum spacing between the base plates corresponding to the two guide plates of the slot structure is a second length, and the second length is less than twice the first length.

[0018] From the above description, it can be seen that the baffle, baffle pair, sealing gasket and heat exchanger provided by the present application, the baffle includes a rectangular plate body, a first folded edge portion folded upward is provided at one long side of the plate body, the first folded edge portion is used to be squeezed and matched with the cover plate of the heat exchanger to ensure sealing; a receiving groove is provided at the other long side of the plate body, the opening of the receiving groove is away from the first folded edge portion, the receiving groove is used to accommodate the first sub-pad of the sealing gasket, so that the receiving groove and the core plate bundle can be flexibly extruded and matched, and compared with rigid matching, the generation of matching gaps can be avoided to avoid leakage; a second folded edge portion folded upward is provided at each of the two short sides of the plate body, and the second folded edge portion is used to match the slot structure of the heat exchanger. The second folding edge can accommodate the second sub-pad of the sealing gasket, so that the second folding edge and the frame plate can be flexibly squeezed and matched, which can avoid the generation of a matching gap and leakage compared with a rigid match; the second folding edge is connected to the accommodating groove to form a connected accommodating cavity, which can be matched with the U-shaped sealing gasket to ensure the sealing effect and avoid leakage at the corners of the frame plate and the core plate bundle; the baffle, baffle pair, sealing gasket and heat exchanger have a simple structure, are easy to make, and are easy to disassemble and install, while ensuring the sealing effect of the heat exchanger and improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a baffle in an embodiment of the present application;

[0021] Figure 2 for Figure 1 Schematic diagram of the plane structure of the middle baffle;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0023] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at the middle BB;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of a baffle pair in an embodiment of the present application;

[0025] Figure 6 for Figure 5Schematic diagram of the cross-sectional structure at CC in the middle;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of a sealing gasket in an embodiment of the present application;

[0027] Figure 8 for Figure 7 Schematic diagram of the planar structure of the middle sealing gasket;

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the slot structure and the frame plate in the embodiment of the present application;

[0029] Figure 10 for Figure 9 Schematic diagram of the planar structure of the middle slot structure and the frame plate;

[0030] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure at DD in the middle;

[0031] Figure 12 This is a schematic diagram of the three-dimensional structure of the guide plate in the embodiment of the present application;

[0032] Figure 13 for Figure 12 Schematic diagram of the planar structure of the middle guide plate;

[0033] Figure 14 for Figure 13 Schematic diagram of the cross-sectional structure at EE;

[0034] Figure 15 This is a schematic diagram of the three-dimensional structure of a heat exchanger in an embodiment of the present application;

[0035] Figure 16 for Figure 15 A schematic diagram of the three-dimensional structure of the baffle pair and the slot structure of the heat exchanger;

[0036] Figure 17 for Figure 16 Schematic diagram of the planar structure of the middle baffle plate pair and the slot structure;

[0037] Figure 18 for Figure 17 Schematic diagram of the cross-sectional structure at FF;

[0038] Figure 19 for Figure 18 Schematic diagram of the cross-sectional structure at GG in the middle.

[0039] Figure markings: 1. Plate body; 1-1. First folding portion; 1-2. Accommodating groove; 1-3. Second folding portion; 1-4. Third folding portion; 1-5. Corrugation; 1-6. Reinforcing rib; 2. Sealing gasket; 2-1. First sub-gasket; 2-2. Second sub-gasket; 3. Baffle pair; 4. Frame; 4-1. Frame plate; 4-2. Insert hole; 5. Core plate bundle; 6. Slot structure; 7. Guide plate; 7-1. Base plate; 7-2. Fourth folding portion; 7-3. Fifth folding portion; 7-4. Insert gear; 8. Cover plate. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0041] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] Welded plate heat exchangers are usually assembled and welded into plate pairs, and then the plate pairs, liners, partitions, pressure plates and other components are assembled, welded and clamped in a specific way to form the final product. Compared with detachable plate heat exchangers, welded plate heat exchangers are widely used because they are more suitable for high-solid content media, have higher safety, flexible process combinations and a wider range of processing capacity.

[0043] Among existing welded plate heat exchangers, plate-and-frame heat exchangers are gaining increasing attention for use in more demanding operating conditions because they inherit the high heat transfer performance of the herringbone corrugations of detachable plate heat exchangers, while also offering greater resistance to high temperatures and high pressures, and ease of disassembly, cleaning, and maintenance. However, in some multi-pass operating conditions with high pressure, low flow rates, and large temperature differences, existing multi-pass plate-and-frame heat exchangers often experience leakage caused by gaps between the assembly baffles of each pass, resulting in a decrease in the equipment's heat transfer performance and failure to meet expected requirements.

[0044] In some technologies, the baffles are directly welded to the frame plates. The disadvantage is that the multi-flow baffles and frame plates are welded into an integral structure, which is difficult to disassemble and assemble, and is not conducive to cleaning and maintenance. At the same time, there are gaps between the rigid mating parts. For example, there will be gaps between the baffles and the core plate bundles, which will lead to leakage and poor heat transfer performance of the equipment. Overly tight design dimensions are very inconvenient for disassembly and maintenance of the equipment, while overly loose design dimensions are likely to lead to increased leakage during use, making the equipment unable to meet the working conditions.

[0045] In some other technologies, the baffles are fixed to the frame plates on both sides by means of an inlay method. This makes it easier to disassemble and assemble the baffle assembly during equipment maintenance. However, the inlay fixing method will result in a matching gap at each connection point. At the same time, the deformation of the baffle caused by the pressure difference of each process during use will also increase the gap between the baffle and the frame plate, which will also lead to significant leakage of the equipment and reduce the heat transfer performance.

[0046] Therefore, there is an urgent need for a baffle that can improve the leakage phenomenon and is easy to assemble.

[0047] The following is a specific embodiment and combined with Figures 1 to 19 To describe the technical solution of this application in detail.

[0048] In some embodiments of the present application, a baffle is provided, such as Figures 1 to 4 As shown, it includes a plate body 1 with a rectangular shape, a first folded edge portion 1-1 folded upward is provided at one long side of the plate body 1, and a receiving groove 1-2 is provided at the other long side of the plate body 1, and the opening of the receiving groove 1-2 is away from the first folded edge portion 1-1; a second folded edge portion 1-3 folded upward is provided at the two short sides of the plate body 1, and the second folded edge portion 1-3 is used to cooperate with the slot structure 6 of the heat exchanger, and the folding angle of the second folded edge portion 1-3 is smaller than the folding angle of the first folded edge portion 1-1, and the second folded edge portion 1-3 is connected to the receiving groove 1-2 to form a connected receiving cavity, which cooperates with the sealing gasket 2.

[0049] like Figure 1 and Figure 2 As shown, the baffle includes a rectangular plate body 1, and the L direction in the figure is the length direction of the plate body 1.

[0050] like Figure 4 As shown, a first folded edge portion 1-1 is provided on one long side of the plate body 1, as shown in FIG. Figure 15 As shown, the first folded edge portion 1-1 is used to form the baffle pair 3 and then be squeezed together with the cover plate 8 of the heat exchanger to ensure sealing.

[0051] like Figure 4As shown, a receiving groove 1-2 is provided at the other long side of the plate body 1, the opening of the receiving groove 1-2 is away from the first folding portion 1-1, and the receiving groove 1-2 is used to form the first sub-pad 2-1 of the sealing pad 2 after the baffle pair 3 is formed. Figure 18 As shown, the accommodating groove 1-2 and the core plate bundle 5 can be flexibly extruded and fitted, which can avoid the generation of fitting gaps and leakage compared to rigid fitting.

[0052] like Figure 3 As shown, a second folded edge portion 1-3 is provided on each of the two short sides of the plate body 1, as shown in FIG. Figure 19 As shown, the second folded edge portion 1-3 is used to form a baffle pair 3 and then cooperate with the slot structure 6 of the heat exchanger to achieve plug-in fixation of the baffle and the heat exchanger, which is convenient for installation and disassembly.

[0053] The folding angle of the second folding portion 1-3 is smaller than the folding angle of the first folding portion 1-1. The second folding portion 1-3 can accommodate the second sub-pad 2-2 of the sealing pad 2, so that the second folding portion 1-3 and the frame plate 4-1 can be flexibly squeezed and matched, which can avoid the generation of a fitting gap and leakage compared to a rigid fit. In addition, as the heat exchanger is used, the middle part of the deflector pair 3 may bend, and the plate body 1 will drive the second folding portion 1-3 to move out of the groove. Restricted by the slot structure 6, the second folding portion 1-3 can further press the sealing pad 2 to ensure the sealing effect.

[0054] like Figure 1 As shown, the second folded edge portion 1-3 is connected to the receiving groove 1-2 to form a connected receiving cavity. After the baffle pair 3 is formed, it can be matched with the U-shaped sealing gasket 2, as shown in FIG. Figure 15 As shown, the sealing effect is ensured to avoid leakage at the corners of the frame plate 4-1 and the core plate bundle 5.

[0055] The length of the baffle can be slightly smaller than the spacing between the relatively arranged frame plates 4-1, which is convenient for plug-in fitting. The length of the baffle can be slightly larger than the spacing between the cover plate 8 and the core plate bundle 5, which is convenient for clamping the cover plate 8.

[0056] The baffle has a simple structure, is easy to manufacture, and is convenient to disassemble and install. At the same time, it can ensure the sealing effect of the heat exchanger and increase the service life.

[0057] In some embodiments, as Figures 1 to 4 As shown, a third folded edge portion 1-4 folded upward is provided on the side of the second folded edge portion 1-3 away from the plate body 1, and the third folded edge portion 1-4 is used to cooperate with the slot structure 6 of the heat exchanger.

[0058] like Figures 1 to 4 As shown, a third folding portion 1-4 folded upward is provided on the side of the second folding portion 1-3 away from the plate body 1, as shown in FIG. Figure 18 As shown, the third folded edge portion 1-4 is used to form the baffle pair 3 and then cooperate with the slot structure 6 of the heat exchanger. The second folded edge portion 1-3 and the third folded edge portion 1-4 can cooperate with the slot structure 6 together to ensure the stability of the baffle pair 3 and realize the wrapping of the sealing gasket 2, further improving the sealing effect and reducing maintenance costs.

[0059] In some embodiments, as Figure 1 and Figure 4 As shown, the height of the third folding portion 1-4 gradually decreases along the direction from the first folding portion 1-1 to the accommodating groove 1-2.

[0060] like Figure 4 As shown, the W1 direction is the direction from the first folded edge portion 1-1 to the accommodating groove 1-2, and H1 is the height of the third folded edge portion 1-4. H1 is set to gradually decrease along the W1 direction, so that after the baffle pair 3 is formed, it is convenient to extend into the corresponding slot structure 6, and play a guiding role in the installation direction toward the core plate bundle 5. As the extension process proceeds, the second folded edge can clamp the second sub-pad 2-2 again to ensure sealing. Similarly, it is also more convenient when disassembling.

[0061] In some embodiments, the folding angle of the first folding portion 1-1 is greater than or equal to 60° and less than 90°; the folding angle of the second folding portion 1-3 is greater than or equal to 10° and less than 45°; the folding angle of the third folding portion 1-4 is greater than or equal to 80° and less than 90°; the angle between the side of the third folding portion 1-4 away from the plate body 1 and the plate body 1 is greater than or equal to 1° and less than 10°.

[0062] like Figure 4 As shown, the folding angle of the first folding edge portion 1-1 is b1, which is set to 60°≤b1<90°, and is used to form a flexible connection between the cover plate 8 and the baffle pair 3. When ensuring that there is no gap on the side of the core plate bundle 5, the cover plate 8 side can also be in contact without a gap; b1 is designed to be less than 90°, so that the baffle is not too rigid, and when there is a manufacturing deviation in the size from the core plate bundle 5 to the cover plate 8, it will not support the cover plate 8 or there will be a gap; b1 is designed to be ≥60°, so that when the cover plate 8 is clamped, the first folding edge portion 1-1 can be easily deformed to adjust the width of the baffle pair 3.

[0063] like Figure 3As shown, the folding angle of the second folding portion 1-3 is c1, and the setting of 10°≤c1<45° is so that when the slot structure 6 clamps the third folding portion 1-4, the second folding portion 1-3 can rotate toward the middle, thereby moving the sealing gasket 2 toward the frame plate 4-1 to ensure the sealing effect. In addition, with the use of the heat exchanger, the middle part of the deflector pair 3 may bend, and the plate body 1 will drive the second folding portion 1-3 to move out of the slot. Guided by the folding wedge angle, the second folding portion 1-3 can further press the sealing gasket 2, and the second sub-gasket 2-2 will move in the opposite direction toward the second folding portion 1-3, further squeezing the side of the frame plate 4-1 to form a wrapping extrusion to ensure the sealing effect; designing c1<45° to avoid insufficient clamping force on the sealing gasket 2; designing c1≥10° to avoid the formed accommodating cavity space being too small.

[0064] like Figure 3 As shown, the folding angle of the third folding portion 1-4 is d1, and is set to 80°≤d1<90°. On the one hand, the third folding portion 1-4 is elastic and easy to assemble. On the other hand, the fifth folding portion 7-3 of the slot structure 6 will be deformed when clamping the second folding portion 1-3 for the first time, which will make the third folding portion 1-4 bend and deform toward the middle when contacting the side wall of the frame plate 4-1, so as not to restrict the movement of the third folding portion 1-4 due to excessive rigidity; designing d1<90° avoids the third folding portion 1-4 from being too rigid; designing d1≥80° makes the vertical downward or upward component of the third folding portion 1-4 relatively large when the slot structure 6 is clamped for the second time, which is conducive to clamping.

[0065] like Figure 4 As shown, the angle between the side of the third folding portion 1-4 away from the plate body 1 and the plate body 1 is a1, and it is set to 1°≤a1<10°. On the one hand, it is convenient for assembly with the slot structure 6, and on the other hand, it is convenient to design an interference fit with the slot structure 6. In this way, as the third folding portion 1-4 extends into the slot structure 6, it will be clamped tighter and tighter, and gradual clamping will only begin to appear in the later stage of the extension process. At this time, most of the baffle pair 3 is already in the slot structure 6, with good rigidity, and it is not easy to bend after clamping; designing a1<10° so that the inclination is not too large, causing the width of the slot structure 6 to be too large, and limiting the arrangement density of the baffle pair 3; designing a1≥1° to avoid the failure to form a guiding effect and a second clamping effect.

[0066] In some embodiments, as Figures 1 to 4 As shown, the plate body 1 is provided with corrugations 1-5 in the length direction, and a reinforcing rib 1-6 is connected between at least one of the corrugations 1-5 and the second folded edge portion 1-3.

[0067] The plate body 1 is provided with corrugations 1-5 in the longitudinal direction to improve the rigidity of the baffle and avoid bending; a reinforcing rib 1-6 is connected between at least one corrugation 1-5 and the second folding edge portion 1-3. Figure 1 As shown, three corrugations 1-5 are provided on the plate body 1, and a reinforcing rib 1-6 is connected between the corrugation 1-5 located in the middle and the second folding portion 1-3, which can further improve the rigidity of the baffle. Otherwise, along the direction from the core plate bundle 5 to the cover plate 8, the second folding portion 1-3 of the baffle pair 3 has poor rigidity and is prone to bending or breaking. In addition, no reinforcing rib 1-6 is provided at the corrugation 1-5 at the corner of the baffle in order to avoid the reinforcing rib 1-6 affecting the clamping closure of the second folding portion 1-3 and ensure the sealing.

[0068] In some embodiments of the present application, a baffle pair 3 is provided, such as Figure 5 and Figure 6 As shown, it includes two relatively arranged baffles as described in any of the above embodiments, the accommodating grooves 1-2 of the two baffles are connected to form a first accommodating cavity, and the second folded edge portions 1-3 of the two baffles are connected to form a second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are used to cooperate with the sealing gasket 2.

[0069] like Figure 5 and Figure 6 As shown, the baffle pair 3 includes two baffles arranged opposite to each other, which can be connected by welding; the receiving grooves 1-2 of the two baffles are connected to form a first receiving cavity, as shown in FIG. Figure 18 As shown, the first accommodating cavity is used to cooperate with the first sub-pad 2-1 of the sealing pad 2; the second folding portions 1-3 of the two baffles are connected to form a second accommodating cavity, the cross section of which is wedge-shaped, as shown Figure 19 As shown, the second accommodating cavity is used to cooperate with the second sub-pad 2 - 2 of the sealing pad 2 .

[0070] The baffle plate pair 3 is easy to disassemble and install, and can ensure the sealing effect of the heat exchanger and increase the service life.

[0071] In some embodiments of the present application, a sealing gasket 2 is provided, such as Figure 7 and Figure 8 As shown, it includes a first sub-pad 2-1, and a second sub-pad 2-2 is vertically connected to both sides of the first sub-pad 2-1. The first sub-pad 2-1 is used to cooperate with the first accommodating cavity of the baffle pair 3 described in any embodiment, and the second sub-pad 2-2 is used to cooperate with the second accommodating cavity of the baffle pair 3.

[0072] like Figure 7 and Figure 8As shown, the sealing gasket 2 is U-shaped and includes a first sub-gasket 2-1. The cross-section of the first sub-gasket 2-1 is, for example, rectangular, and is used to cooperate with the first accommodating cavity of the baffle pair 3 to ensure sealing. A second sub-gasket 2-2 is vertically connected to both sides of the first sub-gasket 2-1. The cross-section of the second sub-gasket 2-2 is, for example, wedge-shaped, and is used to cooperate with the second accommodating cavity of the baffle pair 3 to ensure sealing; the width of the sealing gasket 2 is, for example, 4mm to 15mm, and the thickness is, for example, 4mm to 10mm, and there is no specific limitation.

[0073] The sealing gasket 2 is set to be U-shaped instead of ring-shaped, which facilitates the assembly and disassembly of the sealing gasket 2 and the baffle pair 3 and facilitates maintenance and replacement, and the first sub-gasket 2-1 is connected to the second sub-gasket 2-2. When the baffle pair 3 and the sealing gasket 2 are assembled into the slot structure 6, the first sub-gasket 2-1 can pull the second sub-gasket 2-2 into place, avoiding the second sub-gasket 2-2 from being difficult to move due to the friction of the frame plate 4-1.

[0074] In some embodiments of the present application, a heat exchanger is provided, such as Figures 9 to 19 As shown, it includes a frame 4, in which a core plate bundle 5 is provided, and the frame 4 is installed with a baffle pair 3 as described in any of the above embodiments, and the first accommodating cavity of the baffle pair 3 is arranged toward the core plate bundle 5. The frame 4 includes a relatively arranged frame plate 4-1, and the frame plate 4-1 is connected with a slot structure 6. The second folded edge portion 1-3 of the baffle pair 3 is plugged into the slot structure 6, and a sealing gasket 2 as described in any of the above embodiments is installed between the frame plate 4-1, the core plate bundle 5 and the baffle pair 3.

[0075] like Figure 15 As shown, the heat exchanger includes a frame 4, a core plate bundle 5 is provided in the frame 4, the core plate bundle 5 is used for fluid heat exchange, and a baffle pair 3 is installed on the frame 4, as shown in FIG. Figure 18 As shown, the first accommodating cavity of the baffle pair 3 is arranged toward the core plate bundle 5, as shown in FIG. Figure 16 and Figure 17 As shown, the frame 4 includes frame plates 4-1 arranged opposite to each other, the frame plates 4-1 are connected with a slot structure 6, and the second folded edge portions 1-3 of the baffle plate pair 3 are plugged into the slot structure 6, as shown in FIG. Figure 18 and Figure 19 As shown, a sealing gasket 2 is installed between the frame plate 4-1, the core plate bundle 5 and the baffle pair 3.

[0076] The heat exchanger is easy to assemble and disassemble, has good sealing performance and long service life.

[0077] In some embodiments, as Figures 9 to 19As shown, the baffle pair 3 includes a third folding portion 1-4, the slot structure 6 includes two guide plates 7 arranged relatively spaced apart, the guide plate 7 includes a base plate 7-1, one side of the base plate 7-1 is connected to the frame plate 4-1, and the other side is folded downward to form a fourth folding portion 7-2, and the fourth folding portion 7-2 cooperates with the third folding portion 1-4; the side of the fourth folding portion 7-2 away from the base plate 7-1 is folded upward to form a fifth folding portion 7-3, and the fifth folding portion 7-3 cooperates with the second folding portion 1-3.

[0078] like Figures 9 to 11 As shown, the slot structure 6 includes two guide plates 7 that are spaced apart from each other. Figures 12 to 14 As shown, the guide plate 7 includes a base plate 7-1, one side of the base plate 7-1 is connected to the frame plate 4-1, and the other side is folded downward to form a fourth folded edge portion 7-2, as shown in FIG. Figure 19 As shown, the plane of the base plate 7-1 cooperates with the top of the third folding portion 1-4 to clamp the baffle plate pair 3 for the second time, and the fourth folding portion 7-2 and the side of the third folding portion 1-4 constrain each other; the side of the fourth folding portion 7-2 away from the base plate 7-1 is folded upward to form the fifth folding portion 7-3, as shown Figure 19 As shown, the fifth folded edge portion 7-3 cooperates with the second folded edge portion 1-3, and the slot structure 6 is a convex opening cavity, which cooperates with the second folded edge portion 1-3 and the third folded edge portion 1-4 of the baffle pair 3 to wrap and extrude the sealing gasket 2 to achieve sealing.

[0079] like Figure 12 As shown, one side of the base plate 7-1 is provided with a tooth 7-4, as shown in FIG. Figure 10 As shown, the frame plate 4-1 is provided with a socket 4-2, and the guide plate 7 can be inserted into the socket 4-2 through the tooth 7-4 and welded and fixed between the sockets 4-2 to realize the connection between the guide plate 7 and the frame plate 4-1; the length of the guide plate 7 can be less than or equal to the width of the frame plate 4-1, so that the third folded edge portion 1-4 can be inserted into the edge of the frame plate 4-1, and the rigidity is better.

[0080] In some embodiments, as Figures 9 to 19 As shown, the direction from the frame 4 to the core plate bundle 5 is the first direction, the spacing of the fifth folded edge portion 7-3 corresponding to the two guide plates 7 of the slot structure 6 remains consistent along the first direction, and at the opening of the slot structure 6, the fifth folded edge portion 7-3 is interference fit with the second folded edge portion 1-3; the height of the third folded edge portion 1-4 gradually decreases along the first direction, and the height of the fourth folded edge portion 7-2 gradually decreases along the first direction, the minimum height of the third folded edge portion 1-4 is the first length, and the minimum spacing of the base plate 7-1 corresponding to the two guide plates 7 of the slot structure 6 is the second length, and the second length is less than twice the first length.

[0081] like Figure 11 As shown, the W1 direction is the direction from the frame 4 to the core plate bundle 5, that is, the first direction. Figure 11 As shown, the spacing between the fifth folding portions 7-3 corresponding to the two guide plates 7 of the slot structure 6 is kept consistent along the first direction, as shown in FIG. Figure 11 As shown, at the opening of the slot structure 6, the minimum spacing between the two fifth folded edges 7-3 is H4, and the fifth folded edge 7-3 is set to be interference fit with the second folded edge 1-3, that is, H4 is slightly smaller than the spacing between the second folded edges 1-3 at the corresponding position of the baffle pair 3. In this way, when the baffle pair 3 is just extended into the slot structure 6, the second folded edge 1-3 can be clamped, and then the sealing gasket 2 is clamped for the first time. At this time, under the guidance of the wedge angle of the second folded edge 1-3, the second sub-gasket 2-2 moves to both sides at the same time and fits closely to the side walls of the frame plate 4-1 to ensure the sealing effect; as shown Figure 14 As shown, c2 is the angle between the fifth folded edge portion 7-3 and the horizontal plane, c2=c1, ensuring the matching effect.

[0082] like Figure 13 As shown, H3 is the height of the fourth folding portion 7-2, the W1 direction is the first direction, H3 gradually decreases along the W1 direction, which is convenient for matching with the third folding portion 1-4. In the figure, a3 represents the angle between the side of the fourth folding portion 7-2 close to the substrate 7-1 and the fifth folding portion 7-3, a3=a1, to ensure the matching effect; Figure 10 As shown, the angle between the extension line of the jack 4-2 and the width direction of the frame plate 4-1 is a2, a2 ​​= a1, to ensure the matching effect; the minimum height of the third folding portion 1-4 is the first length, that is, H1, as shown Figure 10 As shown, the minimum spacing between the base plates 7-1 corresponding to the two guide plates 7 of the slot structure 6 is the second length, i.e. H2. The second length is less than twice the first length, i.e. H2 < 2H1. In this way, an interference fit can be formed inside the slot structure 6. When the baffle pair 3 extends into the end of the slot structure 6, the slot structure 6 can clamp the third folded edge portion 1-4, driving the second folded edge portion 1-3 to clamp the sealing gasket 2 for a second time, thereby further ensuring the sealing effect.

[0083] The heat exchanger assembly method includes inserting the baffle pair 3 with the sealing gasket 2 into the slot structure 6 on the frame plate 4-1 from the outside along a first direction. Because the third folded edges 1-4 on both sides of the baffle pair 3 are oblique cone structures, and the two base plates 7-1 of the slot structure 6 are also oblique cone structures, and both have the same angle, in the early and middle stages of sliding assembly, the tops of the third folded edges 1-4 do not contact the base plates 7-1 of the guide plate 7. Due to the interference fit at the opening of the slot structure 6, the fifth folded edge 7-3 of the guide plate 7 has a clamping effect on the second folded edge 1-3 of the baffle pair 3. During the assembly process, the sealing gasket 2 gradually abuts the frame plate 4-1, generating the first extrusion clamping and forming an extrusion force. The magnitude of the extrusion force is related to the strength of the sealing gasket 2 and the amount of interference clamping.

[0084] In the later stage of sliding assembly, the second folded edge portion 1-3 of the baffle pair 3 contacts the base plate 7-1. At this time, as the assembly continues, the top of the third folded edge portion 1-4 squeezes the sealing gasket 2 toward the middle under the action of the guide plate 7, forming a second extrusion and clamping of the sealing gasket 2. The first extrusion and clamping and the second extrusion and clamping form a fully wrapped clamping effect of the sealing gasket 2, and the effect is significant. Under the action of the two extrusion and clamping, the sealing gasket 2 is not only tightly attached to the frame plate 4-1, but also fills the gaps in each corner during the flow process, so that there is no gap on both sides.

[0085] The insertion and assembly of each baffle is completed in sequence. During the assembly of the cover plate 8, the cover plate 8 squeezes the first folded edge portion 1-1, causing the sealing gasket 2 to be squeezed for the third time. The sealing gasket 2 is respectively pressed against the baffle pair 3 and the core plate bundle 5. Under the action of the extrusion force, the first folded edge portion 1-1 is also pressed against the cover plate 8. At the same time, during the process of the cover plate 8 squeezing the baffle pair 3, as the baffle pair 3 moves toward the core plate bundle 5, the interference between the top of the third folded edge portion 1-4 and the plane of the base plate 7-1 increases, further forming extrusion, ensuring the complete extrusion seal around the baffle pair 3. After the assembly is completed, the sealing gasket 2 flows to fill the gaps in each connection, so that the baffle pair 3 and the frame plate 4-1, the cover plate 8, and the core plate bundle 5 form a four-sided gap-free and tight structure, eliminating the rigid assembly gap between each process.

[0086] The disassembly process is similar to the assembly process. Remove the baffle plates 3 one by one, and then take out the frame plate 4-1 for easy maintenance.

[0087] During actual use, when there is a pressure difference between the processes, or when there is a sudden load or even a large pressure fluctuation, the baffle pair 3 will bend to varying degrees in the middle. At this time, since the two side surfaces are wedge-shaped guide structures, in the process of the baffle pair 3 being pulled outward and deformed, the baffle pair 3 is further squeezed by the clamping force of the guide plate 7, so that the sealing gasket 2 has a greater extrusion force toward the frame plate 4-1 and a tighter seal. Compared with the related technical structure, it will not make the gap larger and the leakage improvement is more obvious.

[0088] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0089] In addition, when details are set forth to describe exemplary embodiments of the present application, it will be apparent to those skilled in the art that the present application embodiments can be implemented without these details or with variations in these details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0090] While the present application has been described in conjunction with the embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0091] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A baffle, characterized in that: The invention comprises a rectangular plate body, wherein a first folded edge portion folded upward is provided at one long side of the plate body, and a receiving groove is provided at the other long side of the plate body, wherein the opening of the receiving groove faces away from the first folded edge portion; A second folded edge portion is provided at each of the two short sides of the plate body, and the second folded edge portion is used to cooperate with the slot structure of the heat exchanger. The folding angle of the second folded edge portion is smaller than the folding angle of the first folded edge portion. The second folded edge portion is connected to the accommodating groove to form a connected accommodating cavity, which cooperates with the sealing gasket.

2. The baffle according to claim 1, characterized in that A third folded edge portion folded upward is provided on a side of the second folded edge portion away from the plate body, and the third folded edge portion is used to cooperate with the slot structure of the heat exchanger.

3. The baffle according to claim 2, characterized in that: The height of the third folded edge portion gradually decreases along the direction from the first folded edge portion to the accommodating groove.

4. The baffle according to claim 3, characterized in that The folding angle of the first folding portion is greater than or equal to 60° and less than 90°; the folding angle of the second folding portion is greater than or equal to 10° and less than 45°; the folding angle of the third folding portion is greater than or equal to 80° and less than 90°; the angle between the side of the third folding portion away from the plate body and the plate body is greater than or equal to 1° and less than 10°.

5. The baffle according to claim 1, characterized in that: The plate body is provided with corrugations in the length direction, and a reinforcing rib is connected between at least one of the corrugations and the second folded edge portion.

6. A baffle pair, comprising two oppositely arranged baffles as described in any one of claims 1 to 5, the receiving grooves of the two baffles being connected to form a first receiving cavity, the second folded edge portions of the two baffles being connected to form a second receiving cavity, and the first receiving cavity and the second receiving cavity being used to cooperate with the sealing gasket.

7. A sealing gasket, comprising a first sub-gasket, wherein a second sub-gasket is vertically connected to both sides of the first sub-gasket, the first sub-gasket is used to cooperate with the first accommodating cavity of the baffle pair described in claim 6, and the second sub-gasket is used to cooperate with the second accommodating cavity of the baffle pair.

8. A heat exchanger, comprising a frame, wherein a core plate bundle is provided in the frame, the baffle pair according to claim 6 is installed on the frame, the first accommodating cavity of the baffle pair is arranged toward the core plate bundle, the frame comprises relatively arranged frame plates, a slot structure is connected to the frame plate, the second folded edge portion of the baffle pair is plugged into the slot structure, and the sealing gasket according to claim 7 is installed between the frame plate, the core plate bundle and the baffle pair.

9. The heat exchanger according to claim 8, characterized in that The baffle pair includes a third folding portion, the slot structure includes two guide plates arranged relatively spaced apart, the guide plate includes a base plate, one side of the base plate is connected to the frame plate, and the other side is folded downward to form a fourth folding portion, and the fourth folding portion cooperates with the third folding portion; the side of the fourth folding portion away from the base plate is folded upward to form a fifth folding portion, and the fifth folding portion cooperates with the second folding portion.

10. The heat exchanger according to claim 9, characterized in that The direction from the frame to the core plate bundle is a first direction, the spacing between the fifth folded edge portions corresponding to the two guide plates of the slot structure is kept consistent along the first direction, and at the opening of the slot structure, the fifth folded edge portion is interference-fitted with the second folded edge portion; The height of the third folded edge portion gradually decreases along the first direction, the height of the fourth folded edge portion gradually decreases along the first direction, the minimum height of the third folded edge portion is the first length, the minimum spacing between the substrates corresponding to the two guide plates of the slot structure is the second length, and the second length is less than twice the first length.

Images