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A cross exchange device and microchannel heat exchanger

A cross-exchange and heat exchanger technology, applied in the field of micro-channel heat exchangers, can solve the problems of uneven distribution of wind field, large pressure drop in series, uneven temperature of parallel outlet air, etc. The effect of reducing the problem and balancing the heat exchange

Active Publication Date: 2021-03-30
ZHEJIANG DUNAN THERMAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Microchannel heat exchangers are arranged side by side when making a side-by-side structure, and there are problems of uneven outlet air temperature in parallel and too large pressure drop in series
[0003] In addition, when the micro-channel heat exchanger is used in a dual system with a compressor, often due to the limitation of the structure size, the heat exchangers of the two systems often share one air duct, and the wind field in the air duct is often not evenly distributed, and the air in the After passing through the windward side heat exchanger, the air temperature has changed greatly when passing through the leeward side heat exchanger, so it is difficult to achieve a balance of heat transfer between the two system heat exchangers

Method used

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  • A cross exchange device and microchannel heat exchanger
  • A cross exchange device and microchannel heat exchanger
  • A cross exchange device and microchannel heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1, such as figure 1 As shown, a microchannel heat exchanger with a cross-flow exchange device includes a first row of heat exchangers 21, a second row of heat exchangers 22, a third row of heat exchangers 23, and a fourth row of heat exchangers 24, It also includes a cross flow device 1, the first row of heat exchangers 21 and the second row of heat exchangers 22 are arranged side by side above the cross flow device 1, the third row of heat exchangers 23 and the fourth row of heat exchangers 24 They are arranged side by side under the cross-flow exchange device 1 , wherein the first row of heat exchangers 21 and the third row of heat exchangers 23 are in front, and the second row of heat exchangers 22 and fourth row of heat exchangers 24 are behind.

[0029] Among them, the cross-converting device 1 includes several cavities, which are distributed in multiple layers, and several cavities are arranged in two rows before and after, and the two rows of cavities in ...

Embodiment 2

[0037] Example 2, such as Figure 9 to Figure 11 As shown, the difference from Embodiment 1 is that the cross exchange device includes two separate structures 14, namely an upper structure and a lower structure, and the upper structure is provided with a first cavity 101 and a fourth cavity 104, the second cavity 102 and the third cavity 103 are set on the lower structure, the first cavity 101 and the third cavity 103 are communicated through the first transfer pipe 15, and the fourth cavity 104 It communicates with the second cavity 102 through the second transfer pipe 16 .

[0038] Wherein, the structure of the upper structure and the lower structure are the same, both including a cover plate 143 and two sealing plates 142 arranged side by side, the cover plate 143 is a flat structure, and the front and rear sections of the sealing plate 142 are U-shaped, The cover plate 143 covers the opening side of the cover plate 142 , and a concave-convex plate 141 is provided in the cov...

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Abstract

The invention discloses a cross exchange device and a microchannel heat exchanger. The cross exchange device comprises multiple cavities. The multiple cavities are arranged to be in a front row and a back row. The cavities in the front row and the back row are distributed in multiple layers, and each layer of cavities is arranged in a front-and-back corresponding manner. The front-row cavities and the back-row cavities in front-and-back correspondence in every two adjacent upper and lower layers of cavities are in cross communication. According to the cross exchange device, heat exchangers are arranged in an upper row and a lower row and connected through the cross exchange device, and therefore the heat exchangers in the upper row and the lower row achieve front-and-back cross exchange through the cross exchange device, air outlet uniformity and pressure drop can be guaranteed well, and balance of heat of the two system heat exchangers can be achieved.

Description

technical field [0001] The invention relates to air conditioning technology, in particular to a microchannel heat exchanger. Background technique [0002] Microchannel heat exchangers are arranged side by side when making side-by-side structures, and there are problems of uneven outlet air temperature in parallel and too large pressure drop in series. [0003] In addition, when the micro-channel heat exchanger is used in a dual system with a compressor, often due to the limitation of the structure size, the heat exchangers of the two systems often share one air duct, and the wind field in the air duct is often not evenly distributed, and the air in the After passing through the heat exchanger on the windward side, the air temperature has changed greatly when passing through the heat exchanger on the leeward side, so it is difficult to achieve a balance of heat transfer between the two system heat exchangers. Contents of the invention [0004] The technical problem to be s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D1/053F28F9/26
CPCF28D1/05308F28F9/26
Inventor 王东吴青昊赵丹静
Owner ZHEJIANG DUNAN THERMAL SCI & TECH