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Heat Exchanger

a technology of heat exchanger and fin, which is applied in the direction of heat exchanger fin, tubular element, stationary conduit assembly, etc., can solve the problems of reducing heat exchange efficiency and frost formation in the outdoor heat exchanger, and achieve the effect of preventing the reduction of heat exchange efficiency and improving the drainage performance of the tube and the fin

Inactive Publication Date: 2013-03-21
SANDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a heat exchanger with improved drainage performance while preventing a reduction in heat exchange efficiency. This is achieved by optimizing the contact area between the corrugated fin and the flat heat-transfer tube.

Problems solved by technology

The condensed water is liable to accumulate between a tube and a fin of the heat exchanger, which may inhibit an air flow to cause not only reduction in heat exchange efficiency, but also frost formation in the outdoor heat exchanger during heating operation, for example.

Method used

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Examples

Experimental program
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Effect test

first embodiment

[0029]As illustrated in FIG. 1, a heat exchanger 100 includes a plurality of tubes 110 arranged in parallel to each other, through which a refrigerant flows, and fins 120 each joined by brazing between adjacent tubes 110. In the illustrated example, the plurality of tubes 110 are communicated to hollow header tanks 130 and 135 at both ends of the plurality of tubes 110 in their longitudinal direction (refrigerant flowing direction). The header tank 130 provided on the upper side includes a refrigerant entrance portion 130a provided on one end side, a refrigerant exit portion 130b provided on the other end side, and a part it ion plate 131 provided at a center thereof, for partitioning inside of the header tank 130. With this, the refrigerant flowing in from the entrance portion 130a of the header tank 130 flows through the tubes 110 (two tubes on the left side in FIG. 1) communicated on the entrance portion 130a side with respect to the partition plate 131, and flows into the header...

second embodiment

[0036]FIGS. 5 and 6 illustrate a fin 220 of a heat exchanger 200 according to a second embodiment of the present invention. Note that, the heat exchanger 200 of the second embodiment has a configuration in which the fin 220 has a structure different from that of the fin 120 of the heat exchanger 100 of the first embodiment. Therefore, description other than that of the fin 220 is omitted herein.

[0037]As illustrated in FIGS. 5 and 6, the fin 220 is a so-called corrugated fin, and includes a flat portion 221 having a flat plate shape and a bent portion 222 bent with a predetermined curvature radius, which are formed alternately in the longitudinal direction. The bent portion 222 is a part to be joined to the flat surface 115 of the tube 110, and includes a first bent portion 222a to be joined to the flat surface 115 of one of the opposing tubes 110, and a second bent portion 222b to be joined to the flat surface 115 of the other of the opposing tubes 110. In the illustrated example, t...

third embodiment

[0044]FIGS. 7 and 8 illustrate a fin 320 of a heat exchanger 300 according to a third embodiment of the present invention. Note that, the heat exchanger 300 of the third embodiment has a configuration in which the fin 320 has a structure different from that of the fin 120 of the heat exchanger 100 of the first embodiment. Therefore, description other than that of the fin 320 is omitted herein.

[0045]As illustrated in FIGS. 7 and 8, the fin 320 is a so-called corrugated fin, and includes a flat portion 321 having a flat plate shape and a bent portion 322 bent with a predetermined curvature radius, which are formed alternately in the longitudinal direction. The bent portion 322 is a part to be joined to the flat surface 115 of the tube 110, and includes a first bent portion 322a to be joined to the flat surface 115 of one of the opposing tubes 110, and a second bent portion 322b to be joined to the flat surface 115 of the other of the opposing tubes 110. In the illustrated example, the...

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PUM

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Abstract

Provided is a heat exchanger in which drainage performance of a tube and a fin is improved while preventing reduction in heat exchange efficiency. The heat exchanger includes: a tube having flat surfaces opposed to each other at a predetermined interval; and a fin including a bent portion and a flat portion which are alternately formed in a longitudinal direction, the bent portion being joined to the opposing flat surfaces of the tube. The fin has a predetermined lateral range (bent portion) in the bent portion which is brought into contact with one of the opposing flat surfaces, the predetermined lateral range being bent toward another of the opposing flat surfaces and joined to the another of the opposing flat surfaces, thereby forming a communication path.

Description

TECHNICAL FIELD[0001]The present invention relates to a heat exchanger, and more particularly, to a fin structure in a heat exchanger.BACKGROUND ART[0002]Conventionally, heat exchangers have been utilized in, for example, an air conditioning apparatus. The air conditioning apparatus includes, for example, an indoor heat exchanger and an outdoor heat exchanger. It is known that, in the indoor heat exchanger in the case of cooling operation and in the outdoor heat exchanger in the case of heating operation, condensed water is easily generated through dew condensation. The condensed water is liable to accumulate between a tube and a fin of the heat exchanger, which may inhibit an air flow to cause not only reduction in heat exchange efficiency, but also frost formation in the outdoor heat exchanger during heating operation, for example.[0003]To address this problem, as described in, for example, Patent Literature 1, there has been proposed a heat exchanger in which, for drainage of con...

Claims

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Application Information

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IPC IPC(8): F28F1/30
CPCF28D1/05333F28F1/128F28D1/05366F28F2215/08F28F1/30F28F2215/10
Inventor MATSUMOTO, YUUICHIIINO, YUSUKE
Owner SANDEN CORP
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