Micro-channel heat exchanger
A micro-channel heat exchanger and micro-channel technology, applied in indirect heat exchangers, heat exchanger types, heat transfer modification, etc., can solve the problems of heat transfer performance not meeting the requirements, flat tube/fin combination waste, etc.
Active Publication Date: 2011-11-16
SANHUA(HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO LTD +1
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Problems solved by technology
[0009] However, in the prior art, since the entire heat exchanger adopts a uniform microchannel flat tube and fin configuration structure with exactly the same structural parameters in all regions, this will inevitably lead to regions requiring high heat transfer performance. The heat transfer performance of the flat tube / fin combination cannot meet the requirements, and where the heat transfer performance requirement is not high, the flat tube / fin combination used is a bit wasteful
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[0062] Preferred embodiments of the microchannel heat exchanger of the present invention will be described below with reference to the accompanying drawings. In the following description, structural components that are the same as or similar to those of the prior art will be given the same reference numerals.
[0063] On the one hand, as mentioned above, when the microchannel heat exchanger is working, the temperature of the internal working medium such as refrigerant and water at the inlet of the heat exchanger is relatively high. The temperature of the internal working medium gradually decreases, and the temperature of the internal working medium at the outlet of the heat exchanger is the lowest. Therefore, the surface temperature of each area divided by the internal working medium flow path of the entire heat exchanger decreases according to the flow direction of the internal working medium fluid. .
[0064] On the other hand, in each area divided according to the internal...
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The invention discloses a micro-channel heat exchanger, which comprises two current collecting tubes, a plurality of micro-channel flat tubes and fins, wherein the micro-channel flat tubes are arranged between the two current collecting tubes and communicated with fluid of the two current collecting tubes respectively; the fins are arranged on the micro-channel flat tubes; and the micro-channel heat exchanger is divided into a plurality of heat exchange areas, wherein at least two of the plurality of heat exchange areas have different heat exchange properties so that the heat exchange efficiencies of the heat exchange areas in the at least two heat exchange areas and corresponding to large requirement for heat exchange capability are higher than that of the heat exchange areas in the at least two heat exchange areas and corresponding to small requirement for heat exchange capability.
Description
technical field [0001] The invention relates to a micro-channel heat exchanger, which can be applied in an air-conditioning system. Background technique [0002] Microchannel heat exchanger is a heat exchanger widely used in refrigeration and air conditioning systems. figure 1 is a schematic diagram of the structure of a type of microchannel heat exchanger, for clarity, figure 1 Only the microchannel flat tubes 1 located at the upper and lower ends are shown in the figure, and the microchannel flat tubes located in the middle are not shown. Figure 2A yes figure 1 Partial enlarged view of part A in middle; and Figure 2B yes figure 1 Partial enlarged view of part B in middle. [0003] Such as figure 1 As shown, the microchannel heat exchanger includes two headers 2 and a plurality of microchannel flat tubes 1 arranged between the two headers, and each microchannel flat tube 1 is respectively in fluid communication with the two headers. When the microchannel heat excha...
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IPC IPC(8): F28D1/053F28F1/42F28F21/00F28F13/00F25B39/00
Inventor 陆向迅高原黄宁杰
Owner SANHUA(HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO LTD