Winding type spiral pipe heat exchanger

Abstract

The invention discloses a winding spiral pipe heat exchanger, the structural style is characterized in that a tubule is winded and embedded into a groove at the outside of the spiral pipe. Wherein one or a plurality of fluid is flowed in the tubule; a fluid is flowed in the spiral pipe; the winding spiral pipe can realize multi-flow heat exchange with the spiral pipe. The groove structure can enlarge heat exchange area and improve the efficiency of heat transfer. In addition, the multi-flow of the tubule can make the fluid in the spiral pipe implement heat exchange with one or a plurality of fluid, so the flexibility and heat exchange efficiency of the heat exchanger can be improved greatly. Compared with the micro-channel heat exchanger, the winding spiral pipe heat exchanger has the advantages that: the structure is simple; the processing is convenient; the metal consumption is less compared with the extension-type heat exchanger; the manufacturing cost is low; the heat exchange coefficient of the fluid is over 2 times than that of the extension-type heat exchanger; if the fluid of the tubule or the fluid of the spiral pipe is leaked, a cross-contamination will not be happened; thereby the winding spiral pipe heat exchanger is most suitable for transcritical CO2 heat pump water heater and other systems.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to a wound type spiral tube heat exchanger. Background technique [0002] The improvement of refrigeration and heat pump system performance depends on the improvement of the efficiency, compactness and safety of each component in the system and the reduction of cost. Among them, the high-pressure heat exchanger is particularly important to the improvement of system performance. Among the various heat exchangers currently used, the heat transfer performance of the plate heat exchanger is superior to that of the sleeve heat exchanger, but its pressure bearing capacity is low. Although the inner tube of the sleeve-and-tube heat exchanger can withstand high pressure, its heat exchange efficiency, compact structure, and metal consumption per unit heat exchange area are not as good as other new compact heat exchangers. , the fluid leaks, and the fluids in the inner and outer tubes pollute each ...

AI Technical Summary

Problems solved by technology

Although this type of heat exchanger has a simple structure and is easy to process, its metal consumption per unit of heat exchange is large, and its manufacturing cost also increases accordingly.

And when the inner tube ruptures, CO 2 Leakage will affect water quality, and the structural design of the heat exchanger cannot meet the requirements of cross-contamination-free heat exchange technology

[0004] The Japanese patent (patent name: heat exchanger for water heater, publication number: 2006-162204) uses winding technology to wind a group of thin tubes on a thick tube, which solves the problems of pressure resistance and possible cross-contamination, but this The structure makes the contact area between the thick tube and the thin tube small, so the heat exchange effect is not good

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