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Tube for Heat Exchanger, Heat Exchanger, and Method for Manufacturing Tube for Heat Exchanger

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 tube that improves drainage performance while preventing brazing failure. Additionally, the invention provides a heat exchanger and a method of manufacturing the 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.

Method used

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  • Tube for Heat Exchanger, Heat Exchanger, and Method for Manufacturing Tube for Heat Exchanger
  • Tube for Heat Exchanger, Heat Exchanger, and Method for Manufacturing Tube for Heat Exchanger
  • Tube for Heat Exchanger, Heat Exchanger, and Method for Manufacturing Tube for Heat Exchanger

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first embodiment

[0025]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 partition 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 t...

second embodiment

[0037]FIG. 5 illustrates a tube 210 of a heat exchanger 200 according to a second embodiment of the present invention. Note that, the tube 210 of the second embodiment illustrated in FIG. 5 has a configuration in which the tube 210 having a structure different from that of the tube 110 of the heat exchanger 100 of the first embodiment is provided. Therefore, description other than that of the tube 210 is omitted herein.

[0038]The tube 210 is formed into a flat hollow plate shape and is made of a metal having high heat conductivity, such as aluminum. Further, in an inside space, a plurality of partition portions 213 are provided so that a plurality of refrigerant flow paths 211 extending in a longitudinal direction are arranged in parallel in a lateral direction (width direction).

[0039]In each of both widthwise (lateral) end portions of the tube 210, a stepped portion 217 and a stepped portion 218 are formed on one end side (end portion 210a side) and the other end side (end portion 2...

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Abstract

Provided is a tube for a heat exchanger in which drainage performance of the tube and the fin is improved while preventing the brazing failure. That is, provided is a tube (110) for a heat exchanger, the tube through which a refrigerant flows being formed into a flat plate shape, the tube including stepped portions (117 and 118) at both end portions (110a and 110b) in a refrigerant flowing direction, respectively, in which the tube has a widthwise length in a region on an end portion (110a or 110b) side with respect to a position of each of the stepped portions (117 and 118), the widthwise length being smaller than a widthwise length in a region between both the stepped portions (117 and 118), and in which the tube further includes a drainage portion (119) at a predetermined position between both the stepped portions (117 and 118) along the refrigerant flowing direction.

Description

TECHNICAL FIELD[0001]The present invention relates to a heat exchanger, and more particularly, to a tube structure in a heat exchanger and a method of manufacturing a tube for 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.[0003]To address this problem, as described in, for example, Patent Literature 1, there has been proposed ...

Claims

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Application Information

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IPC IPC(8): F28F1/00B21K21/16
CPCB21C37/151F28D1/05375F28F1/022F28F1/025Y10T29/49391B21K21/16F28F1/00F28D1/05316B21C23/10F28F2255/08
Inventor MATSUMOTO, YUUICHIIINO, YUSUKE
Owner SANDEN CORP