Parallel flow micro-channel condenser capable of defrosting by using heat pump

Abstract

A parallel flow micro-channel condenser capable of defrosting by using a heat pump includes a parallel flow micro-channel condenser unit; the parallel flow micro-channel condenser unit includes micro-channel flat tubes, fins, a left side liquid collecting tube, a right side liquid collecting tube, an upper fixing plate, a lower fixing plate, an air inlet tube compression plate, a liquid outlet compression plate and distributed supports. Each micro-channel flat tubular includes a D-shaped tube body and honeycombed micro-channels arranged in the D-shaped tubular body; each fin is sheet-shaped; the micro-channel flat tubes formed by the D-shaped tubular bodies and the honeycombed micro-channels are inserted into and in expansion connection with the sheet-shaped fins to form a whole body. The parallel flow micro-channel condenser can be applied to various vehicle air condition devices and various room air condition devices.

Description

technical field [0001] The invention relates to a parallel-flow micro-channel condenser, in particular to a parallel-flow micro-channel condenser capable of heat pump defrosting. Background technique [0002] Currently used parallel flow microchannel condensers are all heat exchanged by refrigerant heat through porous harmonica tubes to W-shaped fins and air. Due to the advantages of high heat exchange efficiency and compact structure, parallel flow microchannel condensers have attracted much attention and been applied. [0003] However, when the heat pump air-conditioning system heats up in winter, the heat exchanger of the outdoor unit is used as an evaporator. If the commonly used parallel flow microchannel condenser is used as the evaporator, the horizontal placement of the multi-hole flat tube is not convenient for water flow. At the same time, the W-shaped heat sink is divided into sections by the porous harmonica flat tube, so it is more unfavorable for water flow. I...

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Problems solved by technology

[0003] However, when the heat pump air-conditioning system heats up in winter, the heat exchanger of the outdoor unit is used as an evaporator. If the commonly used parallel flow microchannel condenser is used as the evaporator, the horizontal placement of the multi-hole flat tube is not convenient for water flow. At the same time, the W-shaped heat sink is divided into sections by the porous harmonica flat tube, so it is more unfavorable for water flow. In this way, the condensed water cannot flow down when the heat pump type air conditioning system heats and defrosts, causing the heat exchanger of the outdoor unit to freeze. Frost, ice, and heat exchange cannot be performed. As a result, the heat pump air-conditioning system cannot work normally when heating in winter

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