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Microchannel heat exchanger and its flat tube

A technology of micro-channel heat exchangers and flat tubes, applied in the direction of indirect heat exchangers, heat exchanger types, tubular elements, etc., can solve the problems of increasing defrosting frequency, increasing fan power consumption, limiting the promotion of micro-channel heat exchangers and Application and other issues

Active Publication Date: 2021-12-07
ZHEJIANG DUNAN THERMAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the traditional microchannel heat exchanger with flat tubes placed horizontally, due to the flat structural characteristics of the flat tubes, condensed water accumulates on the surface of the flat tubes during the use of the heat exchanger, resulting in poor drainage efficiency.
Condensed water will increase the flow resistance on the air side, increase the power consumption of the fan, and cause the ratio of latent heat to sensible heat to change during the air conditioning process. In frosting conditions, it will increase the frequency of defrosting, which will greatly limit the microchannel. Promotion and Application of Heat Exchanger

Method used

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  • Microchannel heat exchanger and its flat tube
  • Microchannel heat exchanger and its flat tube
  • Microchannel heat exchanger and its flat tube

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0027] It should be noted that when an element is referred to as being “disposed on” or “fixed on” another element, it may be directly on another element or there may be an intervening element. When an element is referred to as being "fixed on" another element, or "fixedly connected" to another element, it may be detachably fixed or non-detachably fixed therebetween. When an element is referred to as being "connected" or "rotatably connected" to another element, it can be directly connected to the other element or intervening elements may also be pres...

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Abstract

The invention discloses a microchannel heat exchanger and its flat tube. The flat tube includes: the flat tube body has a first twisted section, a straight section and a second twisted section connected in sequence along the short axis direction of the flat tube body , both the first torsion section and the second torsion section are torsion around the minor axis of the flat tube body, and the torsion angles of the first torsion section and the second torsion section are different. The condensed water on the flat tubes can be discharged in time without affecting the normal heat exchange of the flat tubes; thus, the heat exchange efficiency of the microchannel heat exchanger using the flat tubes is ensured.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a microchannel heat exchanger and a flat tube thereof. Background technique [0002] Compared with traditional air-cooled heat exchangers, microchannel heat exchangers have significant advantages such as compact structure, high heat transfer efficiency, less refrigerant charge, and low material cost, and become an important development direction of the heat exchanger industry in the future. [0003] Under evaporative conditions, when the evaporating temperature is lower than the dew point temperature of the humid air, the water vapor in the humid air will condense on the surface of the heat exchanger to form condensation. For the traditional microchannel heat exchanger with flat tubes placed horizontally, due to the flat structural characteristics of the flat tubes, condensed water accumulates on the surface of the flat tubes during the use of the heat exchanger, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D1/053F28F1/02F28F17/00
CPCF28D1/05358F28F1/02F28F17/005
Inventor 刘晓蕾吴青昊魏文建
Owner ZHEJIANG DUNAN THERMAL SCI & TECH
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