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Collector and microchannel heat exchanger and air conditioning system with the same

A technology of micro-channel heat exchangers and headers, which is applied in refrigeration and liquefaction, lighting and heating equipment, evaporators/condensers, etc., and can solve the problems of uneven gas-liquid distribution and low heat transfer performance of headers , to achieve the effect of increasing the effective heat transfer area, improving heat transfer performance and improving work efficiency

Active Publication Date: 2018-09-18
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low heat exchange performance caused by the uneven distribution of gas and liquid in the air-conditioning system in the prior art, so as to provide a Flow Tube Microchannel Heat Exchanger and Air Conditioning System

Method used

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  • Collector and microchannel heat exchanger and air conditioning system with the same
  • Collector and microchannel heat exchanger and air conditioning system with the same
  • Collector and microchannel heat exchanger and air conditioning system with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1, such as figure 1 As shown, preferably, the first spacer structure includes four spacers with holes (the third spacer 43, the fourth spacer 44, the fifth spacer 45 and the sixth spacer 46), the The first connecting pipe structure includes two connecting pipes (the third connecting pipe 53 and the fourth connecting pipe 54), wherein one connecting pipe (the third connecting pipe 53) communicates from the cavity near the bottom end of the collector pipe 12 to the In the cavity between the two upper partitions (the third partition 43 and the fourth partition 44), the other (the fourth connecting pipe 54) communicates from the cavity at the bottom end of the header 12 to the In the cavity between the two lower spacers (the fifth spacer 45 and the sixth spacer 46 ).

[0042] Through two connecting pipes, the fluid in the cavity at the bottom end of the header can be introduced into the cavity between the upper two partitions and the cavity between the two lower pa...

Embodiment 2

[0043] Example 2, such as figure 2 As shown, preferably, the first spacer structure includes four spacers with holes (the third spacer 43, the fourth spacer 44, the fifth spacer 45 and the sixth spacer 46), the The first connecting pipe structure includes three connecting pipes (the third connecting pipe 53, the fourth connecting pipe 54 and the fifth connecting pipe 55), and the cavity near the bottom end of the header 12 passes through one of the connecting pipes (the fifth connecting pipe). Pipe 55) is connected to the first splitter 62, and the other end of the first splitter 62 is respectively connected to the other two connecting pipes (the third connecting pipe 53, the fourth connecting pipe 54), and the two connecting pipes The other end is respectively connected to the cavity between the two spacers (the third spacer 43 and the fourth spacer 44) located above, and connected to the two spacers (the fifth spacer 45 and the fourth spacer 44) located below. In the cavit...

Embodiment 3

[0047] Embodiment 3, preferably, as image 3 As shown, the first spacer structure also includes a non-perforated spacer arranged in the middle of the header 12 to divide the header into upper and lower sections that are not connected. Compared with Embodiments 1 and 2, the spacer 47 is further used to divide the header into upper and lower parts, so that the number of flat tube units corresponding to each header (upper header and lower header) is reduced, reducing The vertical height of the header is reduced, and the two parts perform backflow injection and mixing in stages, which further optimizes and improves the uniform distribution effect between gas and liquid refrigerants, thereby improving heat transfer performance.

[0048] Preferably, three spacers with holes in the middle are arranged above the non-perforated spacer (the seventh spacer 47 in this embodiment, note that it is different from the seventh spacer 47 in Embodiments 1 and 2). (fourth, fifth, sixth spacers 4...

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Abstract

The invention provides a header pipe (12). The header pipe is vertically arranged. A first spacer structure with at least one spacer with holes is arranged inside the header pipe (12). The header pipe (12) is divided into at least an upper cavity and a lower cavity by the first spacer structure. The header pipe further comprises at least one first connecting pipe structure arranged outside the header pipe (12). The first connecting pipe structures are communicated with the cavities. According to the header pipe, the non-uniformity of distribution of refrigerant can be relieved effectively, the heat exchange performance of a heat exchanger is improved, the heat of the heat exchanger can be utilized effectively, and the effective heat exchange area of the heat exchanger is increased, so that the work efficiency of an air conditioning system is improved. The invention further relates to the micro-channel heat exchanger and the air-conditioning system with the header pipe.

Description

technical field [0001] The invention belongs to the technical field of heat exchange, and in particular relates to a collecting pipe, a microchannel heat exchanger and an air-conditioning system with the collecting pipe. Background technique [0002] At present, the existing microchannel heat exchanger has the advantages of high efficiency, compactness, light weight, less refrigerant charge, low cost, easy recycling, and environmental protection. Batches are applied to the condensers of outdoor units in the form of only cooling, but there are no mature products for micro-channel heat exchangers in the form of heat pumps. One of the main technical problems is uneven distribution. This is due to the fact that the traditional outdoor unit condenser generally adopts the vertical header, and the gas-liquid two-phase refrigerant will have a certain degree of gas-liquid stratification due to the influence of gravity, and the gaseous refrigerant is easy to accumulate in the cavity o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B39/00
Inventor 吴迎文梁祥飞
Owner GREE ELECTRIC APPLIANCES INC