Micro-channel heat exchanger and refrigerating plant

Abstract

The invention discloses a micro-channel heat exchanger. The micro-channel heat exchanger comprises heat exchange units. Each heat exchange unit comprises a flat tube, a first header pipe and a second header pipe, wherein the first header pipe and the second header pipe are arranged in parallel, the flat tube is connected between the first header pipe and the second header pipe, a plurality of micro channels in the flat tube are respectively communicated with the first header pipe and the second header pipe, and a port communicated with a system pipeline is formed in the first header pipe. The multiple heat exchange units are divided into the heat exchange units arranged in the first direction and the heat exchange units arranged in the second direction, and arranged in a crossed stacking mode, every two adjacent heat exchange units which vertically make contact with each other are different in arrangement direction, the heat exchange units in the first direction form a first heat exchange assembly, and the heat exchange units in the second direction form a second heat exchange assembly. The micro-channel heat exchanger is high in heat exchange efficiency and compact in structure. The invention further discloses a refrigerating plant which comprises the micro-channel heat exchanger. The micro-channel heat exchanger heats refrigerants which are subjected to throttling and will enter a flash-tank by means of exhaust through a compressor, the ratio of gaseous refrigerants is increased, the gas supplement quantity of the compressor is increased, and the efficiency of the compressor is improved.

Description

technical field [0001] The invention belongs to the field of refrigeration and air conditioning, and relates to a microchannel heat exchanger and a refrigeration device with the microchannel heat exchanger. Background technique [0002] The existing structural forms of heat exchangers used for refrigerant-refrigerant or water-refrigerant mainly include shell-and-tube type, casing type and plate type. Many, the latter has complex manufacturing process and high cost, and is generally not suitable for refrigeration devices with small cooling capacity. Contents of the invention [0003] In view of the above-mentioned current state of the art, the technical problem to be solved by the present invention is to provide a novel microchannel heat exchanger with compact structure, high heat exchange efficiency, small internal volume and low cost; [0004] Another technical problem to be solved by the present invention is to provide a refrigeration device, including the micro-channel...

AI Technical Summary

Problems solved by technology

[0002] The existing structural forms of heat exchangers used for refrigerant-refrigerant or water-refrigerant mainly include shell-and-tube type, casing type and plate type. Many, the latter has complex manufacturing process and high cost, and is generally not suitable for refrigeration devices with small cooling capacity

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