Flat tube, heat exchanger and bending method of flat tube

A heat exchanger and flat tube technology, applied in the field of air conditioning systems, can solve the problems of reduced heat exchange efficiency, unfavorable installation, heat exchanger deformation, etc., to achieve the effect of increasing the effective heat exchange area, improving the bending accuracy, and being easy to install

Active Publication Date: 2015-05-06
SANHUA HANGZHOU MICRO CHANNEL HEAT EXCHANGER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The precision of the flat tube bending process is not high, which may easily cause local deformation of the heat exchanger, damage the structure of the nearby fins, and reduce the heat exchange efficiency;
[0009] 2. The larger dimensions of the bent part of the flat tube will reduce the effective heat transfer area of ​​the heat exchanger;
[0010] 3. The bent part of the flat tube protrudes outwards (in figure 1 The position shown is protruding upwards), which affects the appearance of the product and is not conducive to installation

Method used

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  • Flat tube, heat exchanger and bending method of flat tube

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Embodiment Construction

[0032] Please refer to figure 2 As shown, the present invention discloses a heat exchanger 100 with a bent structure, which includes a first header 1, a second header 2, and several pipes connecting the first and second headers 1 and 2. Flat tubes 3 , several fins 4 welded between adjacent flat tubes 3 , and several side plates 5 located outside. The first header 1 and the second header 2 are located on the same side of the heat exchanger 100 (in figure 2 left in the embodiment shown) and approximately parallel to each other. One of the first and second headers 1 and 2 is an inlet header, and the other is an outlet header. Both the first and second headers 1 and 2 are provided with a number of punching holes (not numbered) matching with the flat tube 3 . In the illustrated embodiment of the present invention, the first and second headers 1 and 2 are close to each other, so that the two heat exchange units of the heat exchanger 100 are roughly stacked together; of course, ...

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Abstract

A flat tube comprises a first straight part, a second straight part and a curled part which enables the first straight part and the second straight part to be connected. The first straight part, the second straight part and the curled part are formed through the same flat tube, and the curled part is twisted by at least one circle, so that the first straight part and the second straight part are located on the same side of the curled part. The bending mode is quite special, bending precision can be improved by controlling the radiuses of all arc sections in the flat tube twisting process, especially the size of the curled part in the length direction of the flat tube is reduced, and therefore the effective heat exchanging area of a heat exchanger is improved. In addition, the invention further relates to the heat exchanger with the flat tube and a bending method of the flat tube.

Description

technical field [0001] The invention relates to a flat tube, a heat exchanger and a bending method for the flat tube, belonging to the field of air conditioning systems. Background technique [0002] In recent decades, automotive air conditioners have developed rapidly, accounting for the second place in air conditioning machinery. As one of the four main components of automotive air conditioning, the heat exchanger also needs to be improved and optimized according to market requirements. Because the parallel flow heat exchanger has the characteristics of high cooling efficiency, small size, light weight, etc., it can well meet the requirements of the market, and has been gradually used in automotive air-conditioning systems in recent years. [0003] The parallel flow heat exchanger mainly includes microchannel flat tubes, cooling fins and headers. There are headers at both ends of the microchannel flat tubes for distributing and collecting refrigerant. Corrugated or louv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/08F25B39/00B21D7/00B21D53/06
Inventor 不公告发明人
Owner SANHUA HANGZHOU MICRO CHANNEL HEAT EXCHANGER
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