Micro-path parallel current heat-exchanger for transcritical Co2 circulation and mfg. method
A technology of parallel flow heat exchanger and manufacturing method, applied in the direction of heat exchanger type, indirect heat exchanger, lighting and heating equipment, etc., can solve the problem that welding quality is not easy to control, the yield of heat exchanger is reduced, and the temperature is uneven and other problems, to achieve the effect of easy control of welding quality, improved yield and enhanced strength
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[0021] The structure and manufacturing method of the present invention will be further described below in conjunction with the accompanying drawings.
[0022] Figure 5 The schematic diagram of the three-dimensional structure of the microchannel parallel flow heat exchanger provided by the present invention, the microchannel parallel flow heat exchanger contains a multi-tube header 1, a heat exchange flat tube bundle 2 welded between the two headers, and a parallel flat tube bundle 2. Fins 3 are welded between the tube bundles. Image 6 a is a schematic cross-sectional structure diagram of the multi-tube header provided by the present invention, one side of which is designed as a plane and formed by extrusion; in order to be welded with the flat tube bundle, a flat tube having a flat tube thickness and width is milled out on the welding plane in parallel. Hot flat tube slot 4 ( Image 6 b).
[0023] CO 2 The working medium first enters the multi-tube header 1 (inlet header...
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