Double-layer parallel flow evaporator

Abstract

The invention discloses a double-layer parallel flow evaporator which comprises two groups of cooling core bodies which are vertically arranged adjacent to each other, wherein the upper-layer cooling core body consists of a first collector tube, a second collector tube, and a plurality of flat tubes connected between the first collector tube and the second collector tube; the lower-layer cooling core body consists of a third collector tube, a fourth collector tube, and a plurality of flat tubes connected between the third collector tube and the fourth collector tube; separation plates are arranged among the first collector tube, the second collector tube, the third collector tube and the fourth collector tube; the left part of the first collector tube is connected with a liquid inlet tube, and the right part of the first collector tube is connected with a gas outlet tube; and the corresponding parts of the left and right parts of the second collector tube and the fourth collector tube are communicated with each other. According to the double-layer parallel flow evaporator, a refrigerant flows horizontally and is uniform in flow velocity; and according to the collector tubes which are vertically arranged, the cycle efficiency of compressor refrigeration oil is improved, the maintenance rate of an air-conditioning system is reduced, the utilization rate of the radiating area is improved, and the problem that the evaporator is frosted and wetted is effectively improved.

Description

technical field [0001] The invention relates to an evaporator for an automobile air-conditioning system, in particular to a parallel flow evaporator. Background technique [0002] The utility model patent application with the patent number of 200620033503.X discloses a double-layer thin multi-stage parallel flow evaporator for automobile air conditioners. The main improvement is to change the original stacked evaporator into a double parallel flow structure. The flow resistance of the refrigerant is large, and the left and right arrangement of the liquid collection pipe is not conducive to the circulation of the refrigeration oil, which reduces the cooling capacity. Contents of the invention [0003] The object of the present invention is to provide a double-layer parallel-flow evaporator, which has a novel structure and effectively improves the utilization rate of the heat dissipation area. [0004] In order to achieve the above object, the present invention adopts the t...

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Problems solved by technology

[0002] The utility model patent application with the patent number of 200620033503.X discloses a double-layer thin multi-stage parallel flow evaporator for automobile air conditioners. The main improvement is to change the original stacked evaporator into a double parallel flow structure. The flow resistance of the refrigerant is large, and the left and right arrangement of the liquid collection pipe is not conducive to the circulation of the refrigeration oil, which reduces the cooling capacity

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