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Micro-channel heat exchanger

A micro-channel heat exchanger and micro-channel technology, applied in the field of heat exchanger devices, can solve problems such as poor heat exchange effect of heat exchangers, and achieve the effects of improving heat exchange performance, accelerating excretion speed, and evenly distributing refrigerant

Pending Publication Date: 2019-05-17
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a microchannel heat exchanger to solve the problem of poor heat exchange effect of the heat exchanger in the prior art

Method used

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Examples

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Embodiment 1

[0028] like figure 1 and figure 2 As shown, the embodiment of the present invention provides a microchannel heat exchanger, which includes two heat exchange units respectively the first heat exchange unit and the second heat exchange unit, specifically including the first header 1 horizontally arranged at the upper end, The second header 5, the third header 4 and the fourth header 9 horizontally arranged at the lower end, the first header 1, the second header 5, the third header 4 and the fourth header The flow tubes 9 are parallel to each other. The first header 1 communicates with the third header 4 through the first microchannel flat tube group 3 , and the second header 5 communicates with the fourth header 9 through the second microchannel flat tube group 7 .

[0029] Wherein, one side of the first header 1 is provided with a first interface 2, and one side of the fourth header 9 is provided with a second interface 8, in order to circulate the circulating medium in the ...

Embodiment 2

[0033] like image 3 and Figure 4 As shown, the second embodiment is basically the same as the first embodiment. For the sake of brevity, in the description process of this embodiment, the same technical features as the first embodiment will not be described, and only the second embodiment and the first embodiment will be described. the difference:

[0034] The first header 1 and the second header 5 are separated by the first partition 11 arranged along the length direction in the upper header, so that the first header 1 and the second header 5 form an independent circulation The medium circulation channel does not interfere with each other.

[0035] The third header 4 and the fourth header 9 are separated by the second partition 12 arranged along the length direction in the lower header, so that the third header 4 and the fourth header 9 form an independent circulation The medium circulation channel does not interfere with each other.

Embodiment 3

[0037] like Figure 5 and Figure 6 As shown, the third embodiment is basically the same as the first embodiment. For the sake of brevity, in the description process of this embodiment, the same technical features as the first embodiment will not be described, and only the third embodiment and the first embodiment will be described. the difference:

[0038]The first header 1 and the second header 5 are separated by a third partition 13 arranged inside the upper header and along its cross-sectional direction, so that the first header 1 and the second header 5 Form an independent circulating medium circulation channel without interfering with each other.

[0039] The third header 4 and the fourth header 9 are separated by the inside of the lower header and the fourth partition 14 arranged along its cross-sectional direction, so that the third header 4 and the fourth header 9 Form an independent circulating medium circulation channel without interfering with each other.

[00...

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Abstract

The embodiment of the invention relates to the field of heat exchanger devices, and provides a micro-channel heat exchanger. The micro-channel heat exchanger comprises at least two heat exchange units, the heat exchange units comprise upper end collecting pipes and lower end collecting pipes, wherein the upper end collecting pipes and the lower end collecting pipes are both horizontally arranged,the upper end collecting pipes communicate with the lower end collecting pipes through micro-channel flat pipe sets, and one of the upper end collecting pipes of one of the exchange unit communicateswith one of the lower end collecting pipes of the adjacent heat exchange unit through a communicating pipe or one of the lower end collecting pipes of the corresponding exchange unit communicates withone of the upper end collecting pipes of the adjacent heat exchange unit through a communicating pipe. When the micro-channel heat exchanger is used as a condenser, cycling mediums in the micro-channel flat pipe sets are enabled to keep flowing from top to bottom, so that the distribution of refrigerants is more even; and when the micro-channel heat exchanger is used as an evaporator, the cyclingmediums in the micro-channel flat pipe sets are enabled to keep flowing from bottom to top, the discharging speeds of condensate water and defrosting water are increased to be in accord with the gas-liquid flowing regularity, the heat exchange performance is improved, and the use of the micro-channel heat exchanger used as the evaporator of a heat pump is realized.

Description

technical field [0001] The embodiments of the present invention relate to the field of heat exchanger devices, in particular to a microchannel heat exchanger. Background technique [0002] Due to its structural characteristics, the traditional microchannel heat exchanger structure used at present causes the refrigerant to flow mainly in the lateral direction. As a condenser, the microchannel heat exchanger with the traditional structure can achieve the condensation effect, but it is easy to cause uneven distribution of the refrigerant between the microchannel flat tubes and in the microchannel of the same flat tube, and due to the refrigerant discharge After heating, it condenses into a liquid state, and the two-phase flow reduces the heat transfer effect because the gas state is on the top and the liquid state is on the bottom. [0003] When used as an evaporator, it is also easy to cause uneven distribution of the refrigerant between the micro-channel flat tubes and in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D1/053
Inventor 胡文举胡鹏程徐荣吉高岩
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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