Flat tube fin penetrating type micro-channel evaporator for direct-cooling refrigerator

A direct-cooling refrigerator and micro-channel technology, applied in the field of heat exchange, can solve the problems of unfavorable defrosting and drainage, poor application of refrigerator air ducts, etc., and achieve the effect of less pipe material usage, convenient assembly, and less filling volume

Inactive Publication Date: 2015-08-26
JIANGSU QIJIANG IND
5 Cites 7 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, all the flat tubes of the heat exchanger in this technology are connected to and pass through the same heat exchange fin. This design cannot be well applied to refrigerator air duc...
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Method used

As shown in Figure 1-4, present embodiment comprises: microchannel flat tube 1, rectangular fin 2, wherein: rectangular fin 2 center has the hole 3 identical with flat tube 1 shape, cross-sectional area, so The microchannel flat tubes 1 vertically pass through the hole 3 in the center of the rectangular heat sink. In particular, the different layers and rows of flat tubes 1 pass through mutually independent heat sinks 2, and the ...
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Abstract

The invention discloses a flat tube fin penetrating type micro-channel evaporator for a direct-cooling refrigerator, and belongs to the field of heat exchange. The evaporator comprises a micro-channel flat tube and a plurality of rectangular radiating fins arranged on the micro-channel flat tube, the rectangular radiating fins are mutually parallel and equally spaced, through holes are formed in the rectangular radiating fins, and the sectional shape of each through hole is matched with that of the micro-channel flat tube, so that the micro-channel flat tube axially penetrates the rectangular radiating fins. By the aid of the phase change of refrigerants, radiating efficiency is improved, and the heat exchange area of the evaporator is enlarged by the aid of the easily bending performance of the aluminum micro-channel flat tube. The evaporator is fine in heat exchange effect and simple to manufacture.

Application Domain

Evaporators/condensers

Technology Topic

RefrigerantHeat sink +3

Image

  • Flat tube fin penetrating type micro-channel evaporator for direct-cooling refrigerator
  • Flat tube fin penetrating type micro-channel evaporator for direct-cooling refrigerator
  • Flat tube fin penetrating type micro-channel evaporator for direct-cooling refrigerator

Examples

  • Experimental program(1)

Example Embodiment

[0024] Example 1
[0025] like figure 1 As shown in ‐4, this embodiment includes: a microchannel flat tube 1 and a rectangular heat sink 2, wherein: the center of the rectangular heat sink 2 has a hole 3 with the same shape and cross-sectional area as the flat tube 1. The microchannel flat tube 1. The holes 3 in the center of the rectangular heat sinks pass vertically. In particular, the different layers and different rows of flat tubes 1 pass through the heat sinks 2 which are independent of each other, and the heat sinks are not connected together. This design makes the evaporator more suitable for refrigerator air ducts with special structure when twisted installation, and it is easier to defrost and drain.
[0026] During processing, the aluminum strip with good thermal conductivity is punched into heat-exchange rectangular heat sinks 1, and rectangular holes 3 with an area slightly larger than the micro-channel flat tubes are punched out at equidistant positions, and the rectangular heat sinks 2 are arranged at certain intervals. Put into a special mold, and then pass the microchannel flat tube 2 through the rectangular hole 3. The rectangular heat sink 2 and the micro-channel flat tube 1 are welded, and then the flat tube is bent as required to manufacture the micro-channel evaporator described in the present invention.
[0027] The width of the microchannel flat tube is 10-40mm, the thickness is 1-3mm, and the number of flat tube holes is 5-40.
[0028] The interval between the micro-channel flat tubes 1 parallel to each other after being bent is adjusted according to the size of the air duct structure.
[0029] The rectangular heat sink 2 can be perpendicular to the horizontal plane, or can be staggered and inclined with the horizontal plane to increase the turbulence and strengthen the heat exchange, such as: image 3 (a) and (b).
[0030] When the evaporator is installed as a whole, it can be perpendicular to the horizontal plane or at an acute angle, such as Figure 4 (a) and (b).
[0031] The micro-channel flat tube 1 and the rectangular heat sink 2 are all made of aluminum.

PUM

PropertyMeasurementUnit
Width10.0 ~ 40.0mm
Thickness1.0 ~ 3.0mm

Description & Claims & Application Information

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