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Aluminum plate-fin type heat exchanger and vacuum braze welding process method thereof

A plate-fin heat exchanger and vacuum technology, applied in the direction of heat exchanger type, indirect heat exchanger, heat exchange equipment, etc., to avoid bad welding, avoid intermittent brazing, and reduce the formation of alumina

Inactive Publication Date: 2010-07-21
NINGBO HYFULL MACHINERY & ELECTRIC MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems and deficiencies in the above-mentioned prior art, the present invention replaces the triangular-shaped fin structure with misplaced rectangular fins in the high-temperature fluid medium channel, and adopts the control of ambient air humidity, clamping pressure, solder thickness, heating temperature, and vacuum degree. , time and other technical parameters, provide an aluminum plate-fin heat exchanger and its vacuum brazing process, aiming at improving the product structure and manufacturing process, so that the aluminum plate-fin heat exchanger, Achieve compact structure, small shape, reduce bad defects, improve welding quality and improve heat transfer efficiency

Method used

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  • Aluminum plate-fin type heat exchanger and vacuum braze welding process method thereof
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  • Aluminum plate-fin type heat exchanger and vacuum braze welding process method thereof

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Embodiment Construction

[0033] refer to Figure 1 ~ Figure 4 , an aluminum plate-fin heat exchanger and its vacuum brazing process method of the present invention include an aluminum plate-fin heat exchanger structure and a vacuum brazing process method, wherein: the aluminum The structure of the plate-fin heat exchanger is composed of side plate 1, composite plate 2, misplaced rectangular fins 3, triangular fins 4, small seal 5, and large seal 6; wherein, the side plate 1 is an aluminum alloy rectangular plate , the thickness is greater than the composite board 2; the composite board 2 is an aluminum alloy rectangular sheet; the dislocation rectangular fin 3 is made of an aluminum alloy sheet, and the corrugated strip is punched into a rectangular shape with a staggered notch in the shape of the finished product. Corrugated board, the flute height is lower than the flute height of the triangular fin 4; the triangular fin 4 is a triangular corrugated board made of aluminum alloy rectangular sheet; th...

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Abstract

The invention discloses an aluminum plate-fin type heat exchanger and a vacuum braze welding process method thereof, which comprises a structure of the aluminum plate-fin type heat exchanger and the vacuum braze welding process method. The invention uses a dislocated rectangular fin to substitute for a triangular fin structure in a high-temperature fluid medium passage. The invention adopts technical scheme as follows: controlling technological parameters of ambient air humidity, clamping pressure, brazing filler thickness, heating-up temperature, vacuum degree, time and the like, thus overcoming problems and shortcomings of large body, non-compactness and bad defects of bending lodging fin, intermittent brazing seam, faulty solder, corrosion and leakage existing in vacuum braze welding in the prior art. Due to the aluminum plate-fin type heat exchanger and the vacuum braze welding process method thereof, by improving product structure and manufacturing process, the aluminum plate-fin type heat exchanger features in compact structure and small body, and the purpose of reducing bad defects, improving welding quality and heat exchange efficiency are achieved.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to an aluminum plate-fin heat exchanger and a vacuum heat exchanger used in various media heat exchange in automobiles, chemical industry, engineering machinery, petrochemical, refrigeration, air-conditioning and other equipment. Brazing process method. Background technique [0002] The aluminum plate-fin heat exchanger is composed of a stack of isolated and orthogonal high-temperature fluid medium channels and low-temperature fluid medium channels; heat conduction fins are welded in the channels. Due to the different fin structures used, the heat exchanger The heat transfer efficiency and volume are also different. In the prior art, triangular fins are usually used in the high and low temperature fluid medium channels. The heat transfer area of ​​the triangular fins is small. Under the premise of satisfying the heat transfer efficiency, the heat exchanger The shape of the aluminum plate-fin hea...

Claims

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Application Information

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IPC IPC(8): F28D9/00F28F3/06
Inventor 金宗宝汪再地陈礼峰陈绍荣
Owner NINGBO HYFULL MACHINERY & ELECTRIC MFG
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