Coaxial wound heat exchanger

A heat exchanger and winding technology, which is applied in the field of coaxial winding heat exchangers, can solve the problems of reducing heat exchange efficiency of heat exchangers, difficulty in guaranteeing machining accuracy, and difficulty in processing inner tubes, etc., achieving compact structure, reducing The effect of processing difficulty and disturbance increase

Inactive Publication Date: 2016-01-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the double wall thickness and interstitial air layer in this technology greatly increase the thermal resistance of the heat exchange tube, which reduces the heat exchange efficiency of the heat exchanger, and the processing of the inner tube is difficult, and the processing accuracy is difficult to guarantee.

Method used

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  • Coaxial wound heat exchanger
  • Coaxial wound heat exchanger
  • Coaxial wound heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 , figure 2 and image 3 As shown, this embodiment includes: a spiral corrugated tube 1, several capillary tubes 2 and a thermal insulation layer 3, wherein: each capillary tube 2 is respectively wound in the groove between the external threads of the spiral corrugated tube 1, and the spiral groove The outer layer of corrugated tube 1 and capillary tube 2 is covered with thermal insulation layer 3, the flow medium inside the spiral corrugated tube 1 is brine, and the flow medium 5 inside capillary tube 2 is refrigerant, and the brine and refrigerant flow countercurrently .

[0020] Each capillary 2 is wound uniformly along the helical direction of the spiral corrugated tube 1 .

[0021] The structure of the fluid channel 4 containing the flowing medium inside the spiral corrugated pipe 1 is a quincunx-shaped spiral channel whose cross-sectional shape is centrally symmetrical.

[0022] Using the spiral corrugated tube 1 as the heat exchange tube, the...

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PUM

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Abstract

Disclosed is a coaxial wound heat exchanger in the field of heat exchange devices. The coaxial wound heat exchanger comprises a spiral fluted tube, a plurality of capillary tubes and a thermal insulation layer, wherein each capillary tube is wound in a corresponding groove between outer screw threads of the spiral fluted tube; the thermal insulation layer covers the spiral fluted tube and the capillary tubes; the flowing medium in the spiral fluted tube is a refrigerating medium, the flowing media in the capillary tubes are freezing media, and the refrigerating medium and the freezing media flow in a reverse-flow mode. According to the coaxial wound heat exchanger, the size of the heat exchanger can be reduced, and the heat exchange efficiency of the heater exchanger can be improved.

Description

technical field [0001] The invention relates to a device in the field of heat exchange devices, in particular to a coaxial winding heat exchanger. Background technique [0002] Due to its excellent heat transfer performance, the casing heat exchanger is widely used in air-cooled / water-cooled heat pump units, heat pump water heaters, household air conditioners, automotive air conditioner regenerators and other products, and can be used as evaporators and condensers . At present, there are generally two types of tube-and-tube heat exchangers commonly used in the market: finned tube-in-tube heat exchangers and internally threaded tube-in-tube heat exchangers, which adopt the method of inner fins between tubes and multiple internally threaded tubes respectively To enhance heat transfer, but its effect is poor and difficult to process. When the finned tube and tube heat exchanger is used as an evaporator, the refrigerant liquid between the tubes will accumulate at the bottom, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/02
Inventor 陈江平朱建民刘鹿鸣高天元
Owner SHANGHAI JIAO TONG UNIV
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