Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Intensive micropore heat exchanger fin

A heat exchanger, intensive technology, applied in the field of heat exchanger fins, can solve the problems of reducing the structural rigidity of the heat exchanger, poor connection effect, and increasing heat exchange efficiency, so as to facilitate large-scale production and avoid connection The effect is not good, the effect of improving the heat exchange efficiency

Pending Publication Date: 2022-04-01
河北宇天材料科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing heat exchanger fin structure design is difficult to increase the heat transfer efficiency without significantly increasing the pressure drop, which has many shortcomings:
[0004] (2) At present, many phase change temperature control components of heat exchangers mainly adopt the method of composite foam copper in organic phase change materials, but direct contact is often used between foam copper and phase change temperature control component cavities. This method tends to create a gap between the copper foam and the cavity. Even if the copper foam and the cavity are connected together by welding or bonding, there will be a risk of insufficient rigidity. Sometimes it is still necessary to design a reinforcement column to meet the structural rigidity requirements
Although the use of foamed copper or wire mesh structure can reduce weight, this structure also significantly reduces the rigidity of the heat exchanger structure, and the subsequent connection effect is not good, which brings great risks to the stable operation of the structure
[0005] (3) For the heat exchanger fin connection with complex flow channel structure and copper foam or wire mesh structure, the connection process is complicated and the reliability is not high
If brazing or diffusion welding is used for this type of structure, it is easy to deform after processing, and the connection strength is not high, which may lead to changes in the shape of the flow channel and fail to achieve the heat exchange effect required by the ideal design.
[0006] (4) The form of conventional heat exchanger fins is relatively fixed, even if it is an optimized fin structure, there will be problems such as complex structure, difficult processing or connection
In order to achieve a certain heat exchange effect, sometimes only certain concessions can be made in terms of structure or heat exchange efficiency.
[0007] (5) For structures with strict heat transfer requirements, in order to meet the heat transfer requirements, measures such as increasing the number of fins will be taken to improve the heat transfer effect, and these measures will often lead to an increase in the structural size of the heat exchanger
If the heat exchanger structure with limited size is required due to the location or size of the equipment, even if the structure is optimized, it may not be able to achieve a satisfactory heat exchange effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intensive micropore heat exchanger fin
  • Intensive micropore heat exchanger fin
  • Intensive micropore heat exchanger fin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A dense microporous heat exchanger fin, the fin is provided with densely distributed micropores opened along the thickness direction, the porosity rate is 5-60%, and the porosity rate is the sum of the areas of all micropores / The surface area of ​​the fin, that is, on one surface of the fin, the sum of the hole areas formed by the micropores on this surface / the surface area of ​​this surface of the fin=opening ratio;

[0041]The total area of ​​the micropores is less than the total area of ​​the inner walls of the micropores, and the total area of ​​the micropores is the sum of the area of ​​the holes formed by all the micropores on the upper and lower surfaces of the fins. When the shape and size of the micropores are the same , the total area of ​​the micropores is the product of twice the total number of openings and the hole area of ​​a single micropore, and the total area of ​​the inner walls of the micropores is the surface area increased by the plate along the th...

Embodiment 2

[0047] In this embodiment, the type of the fins is straight (such as figure 2 shown), zigzag (such as image 3 shown), corrugated type (such as Figure 4 Shown) or various combination types, the position of the micropores can be set at will, and the micropores can be located at any position of the fin according to the demand, as long as the heat exchange area is increased, the arrangement of the micropores can be arranged periodically, It may also be a continuous arrangement or a segmented non-periodic arrangement. The fins are suitable for air-cooled heat exchangers, liquid-cooled heat exchangers, and composite structures of the two heat exchange methods.

Embodiment 3

[0049] In order to compare the heat transfer effect of the dense microporous fin structure and the corresponding non-perforated fin structure, the thickness of the three fins with no perforation, 19.3% perforation rate and 25.1% perforation rate are respectively 2mm The same heat source is applied to the heat sink structure of straight fins, in which the micropore diameter is 1mm, and the heat source (chip) and the fin structure are connected by a layer of metal plate, and the heat exchange effect of the two is compared. Among them, the chip size is 11.3mm×7mm×1mm, the heating power is 20W, the cooling method is air-cooled, the wind speed is 5m / s, the airflow is from one side to the other side along the direction of the flow channel, and the ambient temperature is 25 ℃. Figure 5 The straight fin length is 40.65mm, the fin width is 30mm, and the fin height is F h Both are 20mm, fin thickness δ F Both are 2mm, fin spacing F s Both are 5mm. Figure 5 The dense micropores of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an intensive micropore heat exchanger fin which is provided with micropores distributed intensively, the aperture ratio is 5-60%, and the total area of the micropores is smaller than the total area of the inner walls of the micropores. By the adoption of the simple intensive micropore structure, the effective heat exchange area can be remarkably increased, the heat exchange efficiency can be effectively improved, the weight can be reduced, on the basis that various properties of an original heat exchange structure are kept, more efficient heat exchange is achieved, and important advantages can be achieved in the fields of heat exchange, energy storage and the like.

Description

technical field [0001] The invention relates to the technical field of heat exchanger fins, in particular to a dense microporous heat exchanger fin. Background technique [0002] At present, the existing heat exchanger fin structure design is difficult to increase the heat transfer efficiency without significantly increasing the pressure drop, which has many shortcomings: [0003] (1) The performance of the heat exchanger can be effectively improved by designing the fin configuration of the finned heat exchanger (such as dimples, corrugations, Y-shaped, etc.). However, the superior thermal performance of most compact heat exchangers is based on At the expense of higher frictional losses (i.e., pressure drop), the optimal design of compact heat exchangers always requires a trade-off between increased thermal efficiency and power dissipation due to higher pressure drop under given constraints Make the best tradeoffs. The pressure drop will also increase when the heat transfe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F28F3/02
Inventor 陈晓光王涛王春雷郭世德牛田星胡天阔
Owner 河北宇天材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com