Microchannel heat exchanger capable of uniformly distributing refrigerant flow

Abstract

The invention relates to a microchannel heat exchanger capable of uniformly distributing a refrigerant flow. The microchannel heat exchanger comprises a first air collecting pipe, a second air collecting pipe, a first pipe port and a second pipe port, wherein air collecting pipe end covers are respectively arranged at the two ends of the first air collecting pipe and the second air collecting pipe; a first flow equalizing plate and a second flow equalizing plate parallel to axles of the first air collecting pipe and the second air collecting pipe are respectively arranged in the first air collecting pipe and the second air collecting pipe for dividing the air collecting pipes into first and second inner cavity parts and first and second outer cavity parts; multiple flow equalizing plate through holes are respectively formed in the flow equalizing plates; holeless baffle plates and hole baffle plates are alternately arranged in the first air collecting pipe from the direction of the first pipe port; and baffle plate through holes of the hole baffle plates are positioned on the first and second outer cavity parts. A working medium flows into the cavities through the first flow equalizing plate, uniformly enters microchannel flat pipes by the multiple flow equalizing plate through holes on the first flow equalizing plate, and enters the microchannel flat pipes through the multiple flow equalizing plate through holes on the second flow equalizing plate, so that the purpose of uniform distribution of working medium flows is realized.

Description

technical field [0001] The invention relates to the field of air energy heat exchange, in particular to a microchannel heat exchanger capable of evenly distributing refrigerant flow. Background technique [0002] As a device for exchanging heat between the working medium and the outside air in the refrigeration system, the heat exchanger generally includes pipes for the flow of the working medium and fins to increase the heat exchange area. At present, due to the restriction of hydrochlorofluorocarbon refrigerants such as R22, the application of new refrigerants such as R134a is becoming more and more common, and the application of micro-channel heat exchangers is also becoming more and more common. Microchannel heat exchangers can save costs because they can be made of aluminum metal, and more importantly, they have the advantages of high heat transfer coefficient, high standard area-to-volume ratio, and low heat transfer temperature difference. [0003] Microchannel heat ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a microchannel heat exchanger capable of evenly distributing refrigerant flow to solve the technical problem that the above-mentioned heat exchanger cannot achieve the purpose of uniformly distributing the working medium flow

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