Micro-channel heat exchanger

Abstract

The invention discloses a micro-channel heat exchanger. The micro-channel heat exchanger comprises a first fluid collecting pipe, a second fluid collecting pipe and a heat exchange assembly, wherein the heat exchange assembly is communicated with the first fluid collecting pipe and the second fluid collecting pipe; the heat exchange assembly comprises a plurality of heat exchange units; the heat exchange units comprise two heat exchange fins which are butted integrally; sunken grooves are formed in butted surfaces of the heat exchange fins; after the butted surfaces of the two heat exchange fins are butted, the butted sunken grooves form fluid channels; circulation channels comprise an inlet channel, an outlet channel and a plurality of middle channels; the middle channels are communicated with the inlet channel and the outlet channel; a plurality of semi-encircled fins are also arranged on the heat exchange fins; ventilating slots are formed between paired fins; and the middle channels are formed in semi-encircled spaces of the fins. According to the micro-channel heat exchanger, the fins and the circulation channels are formed in the same layer; fluid required to exchange heat is fed perpendicular to the exchange fins; the fluid flows through the ventilating slots and can exchange heat with the fluids in the middle channels in a multi-directional manner, so that the heat is fully exchanged; and the heat exchanger is high in heat exchange efficiency.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a microchannel heat exchanger that can be used for high-pressure refrigeration. Background technique [0002] Microchannel heat exchanger is a three-dimensional structural unit that can be used for heat exchange between media manufactured by special processing methods. At present, regarding the exact definition of microchannel heat exchangers, a more general and intuitive classification is proposed by Mehendale.s.s, which is divided according to the hydraulic diameter of the flow channel. Generally speaking, the hydraulic diameter of the flow channel is in the range of 0.1~1mm The heat exchanger inside is called a microchannel heat exchanger. The microchannel heat exchanger has the characteristics of compact structure, high heat exchange efficiency, light weight, safe and reliable operation, etc. Because microchannel heat exchangers have many incomparable advant...

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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that in the microchannel parallel flow heat exchanger in the prior art, the fins and the headers are arranged in layers, the heat exchange is not sufficient, and the heat exchange efficiency is low, thereby providing a A microchannel heat exchanger with fins and headers arranged on the same level, sufficient heat exchange and high heat exchange efficiency

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