Microchannel heat exchanger, processing method and air conditioner

Abstract

The invention provides a microchannel heat exchanger, a machining method and an air conditioner. The microchannel heat exchanger comprises a first flow collecting pipe and a second flow collecting pipe; multiple heat exchange flat pipes communicate between the first flow collecting pipe and the second flow collecting pipe; guide plates for guiding refrigerants to flow into each heat exchange flatpipe are arranged in the first flow collecting pipe and / or the second flow collecting pipe; the guide plates take the shape of arc surfaces, and the flow directions of the refrigerants are towards concave surfaces of the guide plates; and the radius of each guide plate in the same section in which the refrigerants in the first flow collecting pipe or the second flow collecting pipe are directly circulated is increased sequentially in the flow direction of the refrigerant. The microchannel heat exchanger, provided by the invention, are provided with the guide plates in the first flow collectingpipe and the second flow collecting pipe, and designs the radiuses of the guide plates to be increased sequentially in the flow directions of the refrigerants, so that the refrigerants are distributed more uniformly when flowing into the same batch of heat exchange flat pipes. The flow directions of the refrigerants are gradually changed by means of the arc surface-shaped guide plates instead ofbeing suddenly changed, so that the pressure drop is reduced, and the flow quality of the refrigerants is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers, and more specifically relates to a microchannel heat exchanger, a processing method and an air conditioner. Background technique [0002] A microchannel heat exchanger is a heat exchanger with a channel equivalent diameter of 10-1000 μm. There are several fine flow channels in the flat tube of this heat exchanger, and the two ends of the flat tube are connected with the circular header. A baffle is set in the header to divide the flow path of the heat exchanger into several processes. [0003] When microchannel heat exchangers are used in air energy water heaters, there are a series of problems such as uneven distribution of refrigerant in the microchannels, resulting in poor heat exchange effects. Contents of the invention [0004] The object of the present invention is to provide a micro-channel heat exchanger, a processing method and an air conditioner, so as to solve the problem o...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a microchannel heat exchanger, processing method and air conditioner to solve the problem of uneven fluid distribution in the prior art

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