Box-type laminated heat exchanger with flanging structure

Abstract

The box-shaped laminated heat exchanger with the flanging structure is composed of a plurality of heat exchange plates which are provided with peripheral inclined plane box shapes and can be sequentially laminated together, and the box-shaped laminated heat exchanger comprises a front outer baffle and a rear outer baffle which are provided with peripheral inclined plane box shapes, and the front outer baffle and the rear outer baffle are arranged between layers formed by laminating the heat exchange plates in the box-shaped laminated heat exchanger. Corner holes allowing heat exchange media to circulate and heat exchange devices for dividing wall heat exchange are arranged, the heat exchange devices are located in the middles of the heat exchange plates, the corner holes are distributed in the two ends of the heat exchange plates, and base plates connected with the upper heat exchange plate and the lower heat exchange plate in a sealed mode are arranged in the spaces formed by the corner holes and peripheral extension faces at the two ends of the heat exchange plates. Through holes are formed in the base plates, the two ends of each heat exchange plate are each provided with one base plate, the two base plates are the same in thickness and are the same as a heat exchange device in the middle of the heat exchange plate, and the heat exchanger is characterized in that integrated flanging structures are arranged on all sealing slopes on the periphery of each heat exchange plate, including all sealing slopes on the periphery of each front outer baffle and all sealing slopes on the periphery of each rear outer baffle.

Description

Technical Field

[0001] The utility model relates to a heat exchanger, in particular to a box-type stacked heat exchanger with a flanging structure. Background Art

[0002] The box-type stacked heat exchanger with a flange structure is composed of multiple heat exchange plates with peripheral inclined box shapes that can be stacked together in sequence, including front and rear outer baffles with peripheral inclined box shapes. The inclined surfaces of each heat exchange plate and the front and rear outer baffles are sealed and connected to each other. In the interlayers formed by the stacking of each heat exchange plate in the box-shaped stacked heat exchanger, there are corner holes for the circulation of heat exchange medium and heat exchange devices for interwall heat exchange. The heat exchange device is located in the middle of each heat exchange plate, and the corner holes are distributed at both ends of each heat exchange plate.

[0003] Prior art for a box-type stacked heat exchanger with a flanged structure is disclosed in patent application number 2005100802003. This patent, titled "Plate Heat Exchanger with Special Flanged Structure," describes in its claims a characteristic feature: flanged edges are present on the sealing slopes of the straight sections around the heat exchange plates, but not on the sealing slopes at the four rounded corners. The patent (2005100802003) describes the flanged edges as absent, but this has been found to be inherently inaccurate in actual use.

[0004] The error is 1. When there is no flange structure on the sealing slope of each heat exchange plate including the four rounded corners of each front and rear outer baffle, although there is a flange structure on the sealing slope of the heat exchange plate including the straight section around the front and rear outer baffle, the angle of the slope will undergo plastic rebound after the slope is mechanically stretched, which will cause the angle value of the sealing slope of the heat exchange plate including the straight section around the front and rear outer baffle to change, thereby affecting the brazing yield.

[0005] Error 2: It is known that this type of heat exchange plate is composed of multiple box-shaped heat exchange plates with peripheral inclined surfaces and can be stacked together in sequence. The principle of the sealing connection between the inclined surfaces around the heat exchange plates follows the following trigonometric function relationship: sin a = [t / (h+t)], where a = the angle of the inclined surface around the heat exchange plate, t = the material thickness of the heat exchange plate, and h = the plate spacing formed by the stacking of the heat exchange plates. It can also be seen that during the brazing process, since the brazing material on the heat exchange plate will melt and flow, the material thickness t of the heat exchange plate will become thinner and become the value of t1. Therefore, the plate spacing h formed by the stacking of the heat exchange plates will naturally become smaller and become the value of h1. Therefore, during the brazing process and after brazing, the trigonometric function relationship of the sealing connection between the inclined surfaces around the heat exchange plates becomes: sin a = [t1 / (h1+t1)]. Comparing this trigonometric relationship with the previously described trigonometric relationship reveals that the only constant is the angle a of the heat exchange plate's peripheral bevel. Therefore, when manufacturing and brazing a stacked heat exchanger composed of multiple box-shaped, beveled heat exchangers that can be stacked sequentially, including front and rear outer baffles, it is crucial to ensure that the angle a of each heat exchange plate, including the front and rear outer baffles, remains constant. Failure to do so will directly reduce the yield of the finished product. However, the patent (2005100802003) describes a heat exchange plate with no flanges on the sealing bevels at the four rounded corners. This structure cannot guarantee that the angle a of the heat exchange plate's peripheral bevel remains constant during the manufacturing and brazing processes.

[0006] Therefore, in order to ensure that the bevel angle value a of each peripheral inclined surface of the heat exchange plate, including the front and rear outer baffles, is consistent and does not change, it is necessary to have an integrated flange structure on all the sealing inclined surfaces around each heat exchange plate, including the front and rear outer baffles. This integrated flange structure is like a hoop that exists stably on the inclined surface. Coupled with the stable flat structure at the bottom of the inclined surface, such a structure can also ensure that the bevel angle value a of the peripheral inclined surface of each heat exchange plate, including the front and rear outer baffles, will not change during the manufacturing and brazing process. Summary of the Invention

[0007] The purpose of the present utility model is to ensure that the angle value a of the peripheral bevel of each heat exchange plate, including the front and rear outer baffles, does not change when manufacturing and brazing a box-type stacked heat exchanger composed of multiple box-shaped heat exchangers with peripheral bevels that can be stacked together in sequence.

[0008] The purpose of the present utility model is achieved by adopting the following scheme. A box-type stacked heat exchanger with a flange structure is composed of a plurality of heat exchange plates with a box shape having a peripheral slope and can be stacked together in sequence, including front and rear outer baffles with a box shape having a peripheral slope. The slopes of each heat exchange plate and the periphery of the front and rear outer baffles are sealed and connected to each other. In the interlayers formed by the stacking of each heat exchange plate in the box-shaped stacked heat exchanger, there are corner holes for the circulation of heat exchange medium and heat exchange devices for interwall heat exchange. The heat exchange device is located in the middle of each heat exchange plate, and the corner holes are distributed at both ends of each heat exchange plate. It is characterized in that all the sealing slopes around each heat exchange plate, including all the sealing slopes around each front and rear outer baffle, have an integrated flange structure.

[0009] The flange section of the integrated flange structure only has an R shape.

[0010] The flange section of the integrated flange structure has a certain width in addition to the R.

[0011] The utility model has the following advantages and positive effects:

[0012] This ensures that during the manufacturing and brazing process, the bevel angle value a of the peripheral bevel of each heat exchange plate, including each front and rear outer baffle, will not change.

[0013] Each heat exchange plate, including the front and rear outer baffles, and all surrounding sealing slopes are equipped with an integrated flange structure to protect the heat exchange plates from damage during manufacturing, transportation, cleaning of oil stains, and assembly of the product.

[0014] This ensures that the box-type stacked heat exchanger with a flanged structure has a high finished product qualification rate during the manufacturing and brazing processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 Cross-sectional view of a box-type stacked heat exchanger with an integrated flange structure

[0017] Figure 2 Front view of the heat exchange plate with an integrated flange structure DETAILED DESCRIPTION

[0018] The following is further explained with reference to the embodiments and figures.

[0019] In all the figures, marks 1 and 1a indicate the front outer baffle with an integrated flange structure, marks 2 and 2a indicate the gaskets distributed at both ends of each heat exchange plate, and in the space formed by the corner holes and the peripheral extension surface at both ends of the heat exchange plate, which are sealed and connected to the upper and lower heat exchange plates, mark 3 indicates the external pipe nozzle located on the box-type stacked heat exchanger, marks 4 and 4a indicate each heat exchange plate with an integrated flange structure, marks 5 and 5a indicate the guide device located between the gasket and the heat exchange device, mark 6 indicates the rear outer baffle with an integrated flange structure, mark 7 indicates the corner holes located on the bottom plane at both ends of the heat exchange plate, mark 8 indicates the heat exchange device located in the middle of the heat exchange plate, mark 9 indicates the through hole located on the gasket, marks R and R1 indicate the integrated flange structure with a flange structure in its flange cross-section, and marks H and H1 indicate that the integrated flange structure also has a certain width structure in addition to the flange structure R1.

[0020] from Figure 1 It can be found that there is an integrated flange structure at the top of the inclined surface of the rear outer baffle 6, and its flange section only has an R flange structure. There is no H or H1 of a certain width outside the R. It can also be considered that the top of the peripheral inclined surface of each heat exchange plate 4, 4a, including the front and rear outer baffles 1, 1a and 6, only has an outward-turned R.

[0021] exist Figure 2 It can be seen that the top of the inclined surface of the heat exchange plate 4a has an integrated flange structure around the periphery, especially at the four rounded corners, there is a flange structure that is integrated with the top of the inclined surface of each straight section.

[0022] exist Figure 1 and Figure 2 In the embodiment, each heat exchange plate 4, 4a, including each front and rear outer baffle 1, 1a and 6, has a peripheral inclined surface with not only an outward-turned R, R1, but also an H, H1 flange structure of a certain width outside R1.

[0023] from Figure 1 It can be seen that the thickness of the front and rear outer baffles 1, 1a and 6 is obviously thicker than the heat exchange plate 4. In fact, in actual products, there is no strict requirement for the thickness of the front and rear outer baffles 1, 1a and 6.

[0024] Finally, it should be noted that Figure 1 and Figure 2Only the heat exchange plates marked as 4 and 4a with an integrated flange structure and the heat exchange plates with four holes and pads marked as 2 and 2a are described. After stacking such heat exchange plates, the heat exchange medium is an inward-flow partition heat exchange structure. In fact, no matter the number of through holes on the heat exchange plate, whether it has a pad structure, and whether the heat exchange medium is an inward-flow partition heat exchange structure, as long as there is a bevel sealing structure around the various heat exchange plates, including all sealing bevels around the front and rear outer baffles, an integrated flange structure can be formed on the peripheral sealing bevel.

Claims

1. A box-type stacked heat exchanger with a flanging structure is composed of a plurality of heat exchange plates with a box-shaped peripheral bevel and which can be stacked together in sequence, including front and rear outer baffles with a box-shaped peripheral bevel. The heat exchange plates and the peripheral bevels of the front and rear outer baffles are sealed and connected together. In the interlayers formed by the stacking of the heat exchange plates in the box-shaped stacked heat exchanger, there are corner holes for the circulation of heat exchange medium and heat exchange devices for interwall heat exchange. The heat exchange devices are located in the middle of each heat exchange plate, and the corner holes are distributed at both ends of each heat exchange plate. In the space formed by the corner holes and the peripheral extension surface at both ends of the heat exchange plate, there are gaskets that are sealed and connected to the upper and lower heat exchange plates. The gaskets have through holes. There is a gasket at each end of each heat exchange plate. The two gaskets have the same thickness and the same thickness as the heat exchange device in the middle of the heat exchange plate. It is characterized in that All sealing inclined surfaces around the heat exchange plates, including all sealing inclined surfaces around the front and rear outer baffles, are provided with an integrated flange structure.

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