CN112503995A

CN112503995A - Original surface type heat exchanger core

Info

Publication number: CN112503995A
Application number: CN202011520774.9A
Authority: CN
Inventors: 许光第; 董玉新; 金利腾
Original assignee: Shanghai Xinao Energy Saving Technology Co ltd
Current assignee: Shanghai Xinao Energy Saving Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-03-16

Abstract

The invention provides an original surface type heat exchanger core, which comprises a plurality of heat exchanger fins arranged in parallel, reinforcing fins arranged on the heat exchanger fins and sealing strips arranged on the edges of the heat exchanger fins, wherein the reinforcing fins are arranged on one side where the sealing strips are arranged, and the reinforcing fins are arranged along the length direction of an inlet channel and an outlet channel. After the edge of the fin provided by the original surface type heat exchanger core body is pressed, the edge pressing area is reinforced, the strength of the inlet and outlet results of the original surface type heat exchanger core body is obviously improved, and the reliability of equipment is improved.

Description

Original surface type heat exchanger core

Technical Field

The invention relates to the technical field of energy power, in particular to an original surface type heat exchanger core body.

Background

The heat exchanger has wide application in the chemical industry, energy industry and other industries, and the common forms of the heat exchanger at present include shell-and-tube type, plate-fin type, plate type, original surface and other forms. The original surface type heat exchanger is usually processed by a metal thin plate with the thickness of 0.1-0.3 mm, a metal plate sheet is formed into fins with certain characteristics after being stamped, multiple layers of fins are overlapped to form a heat exchange core body, but the biggest difficulty in the design and manufacturing process of the existing original surface type heat regenerator is the design and processing of an inlet and outlet structure of the core body, the inlet and outlet structure of the core body is used for separating cold fluid and hot fluid and distributing the cold fluid and the hot fluid into different flow channels, the fins in the core body are mutually supported, but the inlet and outlet are uniformly distributed for flowing, the support-free space between an inlet and an outlet is large, the mechanical property of the original surface type heat exchanger is poor, and the original surface type heat exchanger is.

Accordingly, it is desirable to provide a raw surface heat exchanger core that solves the above-mentioned problems.

Disclosure of Invention

The invention is carried out to solve the problems, and the strengthening fins are arranged at the inlet and the outlet, so that the mechanical property of the part can be effectively improved, and the uniform flow distribution of the inlet and the outlet sections can be ensured.

The invention provides an original surface type heat exchanger core, which comprises a plurality of heat exchanger fins arranged in parallel, reinforcing fins arranged on the heat exchanger fins and sealing strips arranged on the edges of the heat exchanger fins, wherein the reinforcing fins are arranged on one side where the sealing strips are arranged, and the reinforcing fins are arranged along the length direction of an inlet channel and an outlet channel.

The original surface type heat exchanger core body provided by the invention is also characterized in that the reinforcing fins are rectangular fins.

The original surface type heat exchanger core body provided by the invention is also characterized in that the length of the reinforcing fin is the same as the length of the inlet and the outlet of the core body.

The original surface type heat exchanger core body provided by the invention is also characterized in that the width of the reinforcing fin is 2-5 mm.

The original surface type heat exchanger core body provided by the invention is also characterized in that the strength of the reinforcing fins is not less than that of the main fins of the core body.

The original surface type heat exchanger core body provided by the invention is also characterized in that the heat exchanger fin comprises a straight fin area arranged at the inlet and outlet section and a corrugated fin area of the core body main heat exchange section, the corrugated fin area is a sine wave fin, the straight fin area is provided with a fin flattening section, the fin flattening section is provided with a transition section, and the interface abrupt change part of the transition section is chamfered.

The original surface type heat exchanger core body provided by the invention is also characterized in that the length of the transition section is 1-1.5 times of the height of the fin.

The original surface type heat exchanger core body provided by the invention is also characterized in that the reinforcing fins are supported in the middle of the flattening section, and the length of the flattening section without the reinforcing fin support is 5-15 mm.

The original surface type heat exchanger core body provided by the invention is also characterized in that the reinforcing fins are welded and fixed with the fin flattening sections.

The original surface type heat exchanger core body provided by the invention is also characterized in that the seal is arranged at the inlet and outlet end parts of the fins, and the seal is hermetically welded with the fins.

Compared with the prior art, the invention has the beneficial effects that:

after the edge of the fin provided by the original surface type heat exchanger core body is pressed, the edge pressing area is reinforced, the strength of the inlet and outlet results of the original surface type heat exchanger core body is obviously improved, and the reliability of equipment is improved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a primary surface regenerator binder transition section according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a raw surface heat exchanger core configuration provided by an embodiment of the present invention;

FIG. 3 is a schematic illustration of a primary fin configuration of a primary surface heat exchanger core provided in accordance with an embodiment of the present invention;

wherein the content of the first and second substances,

1: a corrugated fin region; 2: a straight fin region; 3: a transition section; 4: flattening the section; 5: reinforcing fins; 6: a seal is provided.

Detailed Description

In order to make the technical means, the creation features, the achievement objects and the effects of the present invention easy to understand, the following embodiments are specifically described with reference to the attached drawings.

In the description of the embodiments of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing and simplifying the description of the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 3, the present invention provides an original surface type heat exchanger core, which includes a plurality of heat exchanger fins arranged in parallel, a reinforcing fin 5 arranged on the heat exchanger fins, and a seal 6 arranged on the edge of the heat exchanger fins, wherein the reinforcing fin 5 is arranged on one side of the seal 6, and the reinforcing fin 5 is arranged along the length direction of an inlet channel and an outlet channel. When the core is installed, the P1 is a low-pressure fluid channel, the P2 is a high-pressure fluid channel, the reinforcing fin 5 is arranged on the side of the fluid with lower pressure, deformation transmitted from the side with higher pressure can be supported, and meanwhile, the structure of the reinforcing fin 5 does not change the distribution of fluid flow.

In some embodiments, the heat exchanger fin comprises a straight fin area arranged at the inlet and outlet section and a corrugated fin area 1 of the core main heat exchange section, the corrugated fin area 1 is a sine wave fin, the straight fin area 2 is provided with a fin flattening section, the fin flattening section is provided with a transition section 3, and the interface abrupt change position of the transition section 3 is rounded. The length a of the transition section is 1-1.5 times of the height h of the fin. The reinforcing fins 5 support the middle of the flattening section 4, and the length of the flattening section 4 without the support of the reinforcing fins 5 is 5-15 mm.

In the above embodiment, the corrugated fin region 1 is advantageous for enhancing heat transfer, and the straight fin region 2 is convenient for edge pressing and flow guiding. The transition section 3 is arranged to reduce mechanical damage to the fins during edge pressing, and for increasing the fluid flowing space, the fins are pressed tightly at the pressing section 4, so that the fins of each layer are tightly attached, and the gaps among the fins of each layer are reduced.

In some embodiments, the stiffening fins 5 are rectangular fins. The length of the reinforcing fins 5 is the same as the length L of the inlet and the outlet of the core body. The width b of the reinforcing fin is 2-5 mm. The rectangular reinforcing fins have high supporting strength, and the reinforcing fins 5 may be made of a metal sheet of the same material and thickness as the main fins. The number of the reinforcing fins 5 may be plural, and the number of the reinforcing fins 5 is determined according to the length of the flattened section 4.

In some embodiments, the reinforcing fins 5 are welded and fixed with the fin flattening sections 4, and damage to the fins due to welding can be reduced while the positions are maintained. After the fins and the reinforcing fins 5 are fixed by spot welding, the fins and the reinforcing fins are stacked layer by layer, sealing strips are plugged into the end parts of the inlet and the outlet, and the sealing strips are welded with the fins in a sealing mode to form a closed fluid area.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The original surface type heat exchanger core is characterized by comprising a plurality of heat exchanger fins arranged in parallel, reinforcing fins arranged on the heat exchanger fins and sealing strips arranged on the edges of the heat exchanger fins, wherein the reinforcing fins are arranged on one side where the sealing strips are arranged, and the reinforcing fins are arranged along the length direction of an inlet channel and an outlet channel.

2. The primary surface heat exchanger core as recited in claim 1 wherein the reinforcing fins are rectangular fins.

3. The primary surface heat exchanger core as claimed in claim 1, wherein the stiffening fins have the same length as the core inlet-outlet length.

4. The primary surface heat exchanger core as claimed in claim 1, wherein the reinforcing fins are 2-5mm wide.

5. The primary surface heat exchanger core as claimed in claim 1, wherein the reinforcing fins have a strength not less than the strength of the primary fins of the core.

6. The primary surface heat exchanger core as claimed in claim 1, wherein the heat exchanger fins comprise straight fin regions arranged at the inlet and outlet sections and corrugated fin regions arranged at the primary heat exchange section of the core, the corrugated fin regions are sine wave fins, the straight fin regions are provided with fin flattening sections, the fin flattening sections are provided with transition sections, and the interface abrupt change positions of the transition sections are rounded off.

7. The primary surface heat exchanger core according to claim 6, wherein the transition section length is 1 to 1.5 fin heights.

8. The primary surface heat exchanger core of claim 6, wherein the reinforcing fins are supported intermediate the flattened sections, and the flattened sections without reinforcing fin support are 5-15mm in length.

9. The primary surface heat exchanger core as set forth in claim 8, wherein said reinforcing fins are welded to the fin flattenings.

10. The primary surface heat exchanger core as claimed in claim 1, wherein the seal is provided at the inlet and outlet ends of the fins, the seal being sealingly welded to the fins.