Heat exchanger with multi-start helical fluted tube

Abstract

The invention provides a heat exchanger with a multi-start helical fluted tube. The heat exchanger comprises an outer tube (1) and an inner tube (2) nested in the outer tube. The inner tube (2) comprises two ends (21) and a multi-start spiral tube (22) disposed between the ends (21); the cross section of the multi-start spiral tube (22) is a circle (3) made up of wavy lines; the multi-start spiral tube (22) is formed by points of the circle (3), spirally extending around the center of the circle (3) along a same spiral path. The inner tube of the heat exchanger is in the multi-start spiral fluted structure, thus increase in the heat exchange area and improvement in the heat exchange coefficient help greatly improve the heat exchange effect, the heat exchanger can serve as both an evaporator and a condenser, and the applicable range of the heat exchanger is widened; the structure is convenient and simple to process and form; the outer wall or inner wall of the multi-start spiral tube (22) is provided with an embossed structure, heat exchange capacity is further improved, and the applicable range is widened; adding heat exchange fins is not required, the cost is lowered, and the competitiveness of the product is improved in terms of multiple aspects.

Description

technical field [0001] The invention relates to a heat exchanger with multi-head spiral corrugated tubes, which belongs to the technical field of heat exchange. Background technique [0002] The heat exchanger is the key structure of the refrigeration or heating device, which belongs to the main structure of the heat exchange between the refrigeration or heating device and the outside world. In the refrigeration or heating device, the heat exchanger mainly includes the condenser and the evaporator. In some A superheater, a reheater, etc. are installed in the device as needed, and they all belong to the category of heat exchangers. Since the refrigeration or heating device mainly exchanges heat with the outside world through the heat exchanger, the heat exchange capacity of the heat exchanger directly affects the performance of the refrigeration or heating device. In order to enhance the heat exchange capacity of the heat exchanger At present, in the prior art, there is a me...

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the technical problems of poor heat transfer effect, complex molding process and narrow application range of the heat exchanger in the prior art, so as to provide a heat exchanger with multi-head spiral corrugated tube heater

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