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A heat exchanger with changing hole area

A technology of heat exchangers and connecting holes, which is applied in the field of shell-and-tube heat exchangers, can solve problems such as uneven internal pressure, and achieve the effects of improved service life, best heat exchange effect, and sufficient heat exchange

Inactive Publication Date: 2017-03-08
青岛酒店管理职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides a new shell-and-tube heat exchanger, so as to solve the problem of uneven internal pressure in the case of heat exchange by heat exchange tubes

Method used

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  • A heat exchanger with changing hole area
  • A heat exchanger with changing hole area
  • A heat exchanger with changing hole area

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Embodiment Construction

[0040] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0042] a heat exchanger such as figure 1 As shown, the heat exchanger includes an upper header 8 and a lower header 9 and heat exchange tubes arranged between the upper and lower headers 8 and 9 . Fins 11 are arranged between the heat exchange tubes. The heat exchanger can be widely used such as automobile heat exchanger, air conditioner heat exchanger and so on.

[0043] Such as figure 2 As shown, the heat exchange tubes are flat heat exchange tubes, including flat tubes 1 and fins 7, the flat tubes 1 include tube walls 3 and side walls 12 parallel to each other, and the side walls 12 connect parallel tube walls 2, the fluid channel 2 is formed between the side wall 12 and the parallel tube...

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Abstract

The invention provides a heat exchanger. The heat exchanger comprises two headers and heat exchanging tubes which are arranged between the two headers; each heat exchanging tube is a flat heat exchanging tube; fins are arranged in each flat tube; each fin comprises an inclined part; the inclined parts are used for isolating fluid passages to form a plurality of small passages; each inclined part is provided with communication holes; the communication holes in different flat heat exchanging tubes are different in area; the farther the distance from each communication hole to an inlet tube is, the larger the area of the communication hole in the flat tube is. According to the heat exchanger provided by the invention, the area of each communication hole is set to vary along with the distance away from the inlet tube, so that a fluid can flow into the heat exchanging tube which is small in flow resistance and far away from the inlet tube; therefore, the fluid can be uniformly distributed in the heat exchanging tubes, the heat exchange efficiency is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a shell-and-tube heat exchanger. Background technique [0002] Flat tubes have been widely used in recent years in automotive air conditioning units and in residential or commercial air conditioning heat exchangers. This kind of flat tube is provided with multiple small channels inside, and when in use, the heat exchange fluid flows through the multiple channels in the flat tube. Because the heat exchange area of ​​the flat tube is large, the heat exchange effect can be greatly improved. [0003] In the prior art, there is a problem of uneven flow distribution caused by the distance between the heat exchange tube and the inlet tube. For example, the closer the distance to the inlet tube, the more fluid flow in the heat exchange tube; Fluid flow is less. In the prior art, the flow distribution or pressure distribution components are installed in the header to make the flow distribution in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B39/00F28F1/02
CPCF25B39/00F25B2339/00F28F1/022
Inventor 赵炜王昌玉范连雷薛陆马文辉吕吉平郭翠云刘运生
Owner 青岛酒店管理职业技术学院
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