Box-type laminated heat exchanger with novel fin structure

Abstract

The box-type laminated heat exchanger with the novel fin structure is composed of a plurality of heat exchange plates which are provided with box-shaped inclined planes and can be sequentially laminated together, and corner holes for heat exchange media to circulate and heat exchange devices for dividing wall heat exchange are arranged in layers formed by mutually sealing, laminating and connecting the box-shaped inclined planes of the heat exchange plates. The heat exchange device is located in the middle of each heat exchange plate, the corner holes are distributed in the two ends of each heat exchange plate, and corner hole 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 the peripheral extension faces at the two ends of each heat exchange plate. The fins in the heat exchange devices and the fins on the peripheries of the corner holes are made into a combined integral fin structure.

Description

Technical Field

[0001] This utility model relates to a heat exchanger, and more particularly to a box-type stacked heat exchanger with a novel finned structure. Background Technology

[0002] The box-type stacked heat exchanger with a novel finned structure is composed of multiple heat exchange plates with box-shaped inclined surfaces that can be stacked sequentially. In the interlayer where the box-shaped inclined surfaces of each heat exchange plate are sealed and stacked together, there are corner holes for the flow of heat exchange medium and heat exchange devices for interlayer 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 corner hole gaskets that are sealed and connected to the upper and lower heat exchange plates.

[0003] The box-type laminated heat exchanger with a novel finned structure differs from the invention patent titled "A Box-Type Laminated Heat Exchanger with Fins Between Corner Holes and Heat Exchange Device," patent number 2016111743897. Claim 1 of that invention patent (2016111743897) describes a feature where, between the corner holes and the heat exchange device, in the heat exchange medium flow space formed by the peripheral extension surfaces of the corner holes at both ends of the heat exchange plates, a finned structure exists alongside the corner hole pad, providing support and unblocking functionality.

[0004] The box-type stacked heat exchanger with a novel finned structure is also different from the utility model patent titled "Box-type Stacked Heat Exchanger with Novel Supporting Fins in the Peripheral Planar Space of Corner Holes," utility model patent number: 2018217566123. Claim 1 of that utility model patent describes a feature where, in the space formed by the peripheral planes of the corner holes at both ends of each heat exchange plate, there are supporting fins, each existing separately from the heat exchange device in the middle of the heat exchange plate, with the upper and lower planes of the supporting fins in close contact with the upper and lower planes of the periphery of the corner holes of each heat exchange plate.

[0005] The shortcoming of the two patents mentioned above (2016111743897, 2018217566123) is that the described "fins" are limited to "between the corner holes and the heat exchange device" and "in the space formed by the planes around the corner holes at both ends of each heat exchange plate, there are supporting fins that exist separately from the heat exchange device in the middle of the heat exchange plate." Regarding the heat exchange device located in the middle of each heat exchange plate, especially the fins constituting the heat exchange device, the "fins" described in the two patents (2016111743897, 2018217566123) are two separate fin structures compared to the fins in the heat exchange device in the middle of each heat exchange plate; that is, the fins in the heat exchange device in the middle of the heat exchange plate and the fins around the corner holes exist independently.

[0006] Therefore, assembling these two types of fins around the corner holes and in the heat exchanger is more complicated, especially since it involves an additional assembly action and process, an additional type of fin, and it is necessary to avoid the two types of fins from overlapping during assembly.

[0007] Since the "fins" described in the original patent structure (2016111743897, 2018217566123) are separate structures from the fins located in the heat exchange device, and may not be the same type of fin, this may result in inconsistent fin heights and different fin materials, which will reduce the brazing qualification rate of the product and also affect the compressive strength and fatigue resistance of the heat exchanger itself after brazing.

[0008] Thanks to advancements in stamping dies and blanking processes, especially in precision blanking of serrated fins, defects that cause fin deformation and increased flow resistance are no longer observed.

[0009] The unique feature of this patented structure is that the heat exchange fins on each heat exchange plate and in each heat exchange device are combined with the "fins" described in the two patents mentioned above (2016111743897, 2018217566123) to form a combined integral fin structure. Summary of the Invention

[0010] The main purpose of this invention is to reduce the number of assembly parts, simplify the assembly process and steps, improve the brazing yield, enhance the compressive strength and fatigue resistance of the heat exchanger itself after brazing, and facilitate the uniform distribution and flow of the heat exchange medium from the corner holes in each heat exchange plate.

[0011] The purpose of this utility model is achieved by the following scheme: a box-type stacked heat exchanger with a novel finned structure is composed of multiple heat exchange plates with box-shaped inclined surfaces that can be stacked sequentially. In the interlayer where the box-shaped inclined surfaces of each heat exchange plate are sealed and stacked together, there are corner holes for the flow of heat exchange medium and heat exchange devices for interlayer 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 surfaces at both ends of the heat exchange plates, there are corner hole gaskets that are sealed and connected together with the upper and lower heat exchange plates. The feature is that on each layer of heat exchange plates, the fins in each heat exchange device and the fins around each corner hole are formed into a combined integral finned structure.

[0012] The fins in the integrated fin structure are serrated.

[0013] The fins in an integrated fin structure come in various types and shapes.

[0014] The integrated fin structure is suitable for assembly and has a suitable shape and area.

[0015] After brazing, the height of the integrated fin structure is the same as the thickness of the corner hole pad.

[0016] This utility model has the following advantages and positive effects.

[0017] 1. This reduces the number of parts to be assembled and simplifies the assembly process and steps.

[0018] 2. This type of fin with a combined integral structure can be directly realized using advanced stamping blanking process. Its precision stamping blanking mold and process can ensure that the original flow channel pattern and fin shape of the serrated fin will not be deformed due to the stamping blanking process, and thus will not affect the flow resistance of the heat exchange medium.

[0019] 3. Thus, the use of a serrated integrated fin structure in the space formed by the plane around the corner holes at both ends of each heat exchange plate, and in each heat exchange device located in the middle of the heat exchange plate, is more conducive to the uniform distribution and flow of the heat exchange medium from the corner holes to the corner holes.

[0020] 4. Because the "fins" described in the original patent structures (2016111743897, 2018217566123) are separate structures from the fins located in the heat exchange device, and may not even be the same type of fin, this could lead to inconsistent fin heights and materials. This would reduce the brazing yield and affect the compressive strength and fatigue resistance of the brazed heat exchange core and heat exchanger itself. Adopting the integrated fin structure of this patent not only improves the brazing yield but also enhances the compressive strength and fatigue resistance of the brazed heat exchange core and heat exchanger itself. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings;

[0022] Figure 1 A front view showing a design with identical corner hole pads and an integrated integral fin structure.

[0023] Figure 2 express Figure 1 Top view and partial sectional view

[0024] Figure 3 Front views showing different corner hole pad patterns and integrated integral fin structures.

[0025] Figure 4 express Figure 3 Top view and partial sectional view

[0026] Figure 5 A front view showing heat exchange plates with a bending pattern and a combined integral fin structure.

[0027] Figure 6 express Figure 5 sectional view Detailed Implementation

[0028] The following description, in conjunction with the embodiments and illustrations, provides further details.

[0029] In all the illustrations, 1, 1a, 1b, 1c, 1d, and 1e represent various modes and shapes of corner hole pads; 2, 2a, 2b, 2c, 2d, and 2e represent integrated fin structures; and 3, 3a, 3b, 3c, 3d, and 3e represent box-shaped heat exchange plates with beveled edges.

[0030] Will Figure 1 , Figure 3 , Figure 5 Comparing the integrated fin structures 2, 2b, and 2d, we can see that the shapes of the integrated fin structures 2, 2b, and 2d are all different. This is because the shapes of the corner hole pads 1, 1a, 1b, 1c, 1d, and 1e corresponding to these integrated fin structures 2, 2b, and 2d, as well as the corresponding box-type heat exchange plates 3, 3a, 3b, 3c, 3d, and 3e, are all different.

[0031] In all the illustrations, the heights of the integrated fin structures 2, 2a, 2b, 2c, 2d, and 2e are the same as the thicknesses of the corner hole pads 1, 1a, 1b, 1c, 1d, and 1e.

[0032] It should also be noted that all illustrations only represent single-layer corner hole gasket structures 1, 1a, 1b, 1c, 1d, and 1e; single-layer integrated fin structures 2, 2a, 2b, 2c, 2d, and 2e; and single-layer box-type heat exchange plates with beveled perimeters 3, 3a, 3b, 3c, 3d, and 3e. In actual products, this box-type stacked heat exchanger is composed of multiple box-type heat exchange plates with beveled perimeters, including corner hole gaskets of various patterns and shapes and integrated fin structures of various patterns placed inside each box-type heat exchange plate with beveled perimeters. These are assembled and stacked sequentially. After brazing, while the beveled perimeters of each box-type heat exchange plate are brazed together to seal the connection, the various corner hole gaskets and integrated fin structures located inside the box-type heat exchange plates with beveled perimeters are also brazed together with the upper and lower planes of the box-type heat exchange plates with beveled perimeters.

Claims

1. A box-type stacked heat exchanger with a novel finned structure is composed of multiple heat exchange plates with box-shaped inclined surfaces that can be sequentially stacked together. Within the interlayer where the box-shaped inclined surfaces of each heat exchange plate are sealed and stacked together, there are corner holes for the flow of the heat exchange medium and heat exchange devices for interlayer 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 surfaces at both ends of the heat exchange plates, there are corner hole gaskets that are sealed and connected to the upper and lower heat exchange plates. The feature is that… On each heat exchange plate, the fins in each heat exchange device and the fins around each corner hole are made into a combined integral fin structure.

2. The box-type stacked heat exchanger with a novel finned structure according to claim 1, characterized in that, After brazing, the height of the integrated fin structure is the same as the thickness of the corner hole pad.

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