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a heat exchanger

A technology of heat exchangers and heat dissipation pipes, which is applied in evaporators/condensers, lighting and heating equipment, refrigeration components, etc., and can solve the problems of reduced heat exchange efficiency of heat exchangers, insufficient heat exchange of microchannels, and poor heat exchange effects and other issues to achieve a balanced heat transfer effect

Active Publication Date: 2011-12-28
SANHUA(HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because the several passages of the above-mentioned radiating pipe 13 enter the refrigerant in the same state, and the refrigerant in the same state can only reach the same outlet state if it absorbs the same heat; On the right, the lower the outlet temperature of the refrigerant, the worse the heat exchange effect, and even the heat exchange of some microchannels is insufficient, that is, the refrigerant at the outlet of the microchannel is still in a gas-liquid two-phase state or the outlet superheat is insufficient, so that the heat exchange The overall heat transfer efficiency of the device is reduced

Method used

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no. 1 approach

[0034] Please refer to Figure 4 , Figure 4 It is a perspective view of the heat pipe according to the first embodiment of the present invention.

[0035]In the first embodiment, the heat pipe 13 provided by the present invention has two sides 131 , 132 , and the two sides 131 , 132 are arranged parallel to each other. The heat pipe also includes an upper plane 135 and a lower plane 136 parallel to each other; the two sides 131 , 132 and the upper planes 135 , 136 enclose a flat heat pipe 13 . There are several microchannels 134 inside the heat dissipation pipe 13, and the number of microchannels can be determined according to actual needs. In the present invention, for the convenience of explaining the process of the refrigerant entering the microchannel, the number of microchannels in this embodiment is set to seven, and each specific microchannel is represented by a symbol A-G.

[0036] The microchannel can be formed by folding, that is, a planar profile is folded to fo...

no. 2 approach

[0046] Please refer to Figure 6 , Figure 6 It is a perspective view of the heat pipe according to the second embodiment of the present invention.

[0047] In the second embodiment, the heat pipe 13 provided by the present invention has two sides 131 , 132 , and the two sides 131 , 132 are arranged parallel to each other. The heat pipe also includes an upper plane 135 and a lower plane 136 parallel to each other; the two sides 131 , 132 and the upper planes 135 , 136 enclose a flat heat pipe 13 . There are several microchannels 134 inside the heat dissipation pipe 13, and the number of microchannels can be determined according to actual needs. In the present invention, for the convenience of explaining the process of the refrigerant entering the microchannel, the number of microchannels in this embodiment is set to seven, and each specific microchannel is represented by a symbol A-G.

[0048] The microchannel can be formed by folding, that is, a planar profile is folded to...

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Abstract

A heat exchanger, including inlet and outlet headers, and several cooling tubes. The two ends of the cooling tubes extend into the inlet header and the outlet header and are sealed and fixed. Air flows through the outer surface of the cooling tubes from one direction. , to exchange heat with the refrigerant in the microchannel; the length of the radiating pipe protruding into the inlet header on the side close to the air inlet direction is different from that on the side near the air outlet direction, The proportion of liquid refrigerant in the refrigerant in the side microchannel is higher than that in the liquid refrigerant in the refrigerant in the microchannel on the side close to the air outlet direction of the heat dissipation pipe. The invention rationally designs the end structure of the heat dissipation pipe, so that when the heat exchanger is in the evaporation condition, it can reasonably distribute the refrigerants in different states entering the microchannel of the heat dissipation pipe, so that the energy carried by the refrigerant can be reasonably utilized , and make a series of micro-channels in the heat pipe achieve a more balanced heat exchange effect.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a heat exchanger used as an evaporator in a refrigeration system such as an air conditioner and a freezer Background technique [0002] A heat exchanger is a device that realizes heat transfer between cold and hot fluids, and is widely used in HVAC and other fields. [0003] figure 1 It is a structural schematic diagram of a typical heat exchanger in the prior art. The heat exchanger 1 includes inlet headers 11 and outlet headers 12 that are parallel to each other, and the two can usually be arranged in parallel, and there are a plurality of cooling tubes 13 that are generally arranged in parallel between them; the transverse direction of the cooling tubes 13 The cross-section is mostly flat, and usually divides the channels of the heat pipe 13 into several, and the channels are also called micro-channels. The corresponding tube walls of the inlet header 11 and the out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B39/00F25B39/02
Inventor 李恒黄宁杰
Owner SANHUA(HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO LTD