Flat Tube, Platelike Body for Making the Flat Tube and Heat Exchanger

a technology of platelike body and flat tube, which is applied in the field of flat tubes, can solve the problems of resulting impact and likely breakage of the side wall, and achieve the effect of relatively easy production

Inactive Publication Date: 2008-10-30
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0034]With the flat tube according to par. 1), the side wall can be protected with the covering wall. When the flat tube is used for a condenser or like heat exchanger, therefore, the side wall can be prevented from becoming damaged or broken owing to the impact of a collision with an extraneous matter, whereby the refrigerant or the like can be prevented from leaking.
[0045]The flat tube according to any one of pars. 1) to 8) can be made relatively easily by the tube fabricating process according to par. 16).

Problems solved by technology

When the flat tube disclosed in the above publication is used in the condenser described and if a flying stone or the like collides with the side wall made from the two side wall forming portions, the side wall is likely to break due to the resulting impact.

Method used

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  • Flat Tube, Platelike Body for Making the Flat Tube and Heat Exchanger
  • Flat Tube, Platelike Body for Making the Flat Tube and Heat Exchanger
  • Flat Tube, Platelike Body for Making the Flat Tube and Heat Exchanger

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Embodiment Construction

[0053]An embodiment of the present invention will be described below with reference to the drawings. In the following description, the upper and lower sides, and the left- and right-hand sides of FIG. 1 and FIG. 2(a) will be referred to as “upper,”“lower,”“left” and “right,” respectively.

[0054]FIG. 1 shows a flat tube, FIG. 2 shows some steps of a process for making the flat tube from a platelike body, and FIG. 3 is a fragmentary view of FIG. 2(e) on an enlarged scale.

[0055]With reference to FIG. 1, the flat tube 1 is made of aluminum and comprises an upper and a lower flat wall 2, 3 (a pair of flat walls) opposed to each other, left and right opposite side walls 4, 5 interconnecting the upper and lower walls 2, 3 at left and right opposite side edges thereof, a covering wall 6 integral with the left side edge of the upper wall 2 and provided over the entire outer surface of the left side wall 4, and a plurality of reinforcing walls 7 interconnecting the upper and lower walls 2, 3, ...

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Abstract

A flat tube includes a pair of upper and lower walls opposed to each other, two side walls interconnecting the upper and lower walls at left and right opposite side edges thereof, and a covering wall provided over the outer surface of the left side wall and brazed to the left side wall. The left side wall is made from a side wall forming portion projecting downward from the upper wall integrally therewith and a side wall forming portion projecting upward from the lower wall integrally therewith by brazing these portions as butted against each other. The covering wall is made by folding a covering wall forming portion formed by extending one side edge of the upper wall. The left side wall including the wall forming portion of the upper wall and the wall forming portion of the lower wall can be protected.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is an application filed under 35 U.S.C. §111(a) claiming the benefit pursuant to 35 U.S.C. §119(e)(1) of the filing date of Provisional Application No. 60 / 601,129 filed Aug. 13, 2004 pursuant to 35 U.S.C. §111(b).TECHNICAL FIELD[0002]The present invention relates to flat tubes for use as heat exchange tubes for heat exchangers, such as refrigerant tubes in condensers or evaporators for motor vehicle air conditioners, oil tubes for motor vehicle oil coolers, water tubes for motor vehicle radiators and heat medium tubes for heater cores, platelike bodies for making such flat tubes, and heat exchangers comprising such flat tubes.[0003]The term “aluminum” as used herein and in the appended claims includes aluminum alloys in addition to pure aluminum.BACKGROUND ART[0004]In recent years, widely used, for example, in motor vehicle air conditioners in place of conventional serpentine condensers are condensers which comprise, as sh...

Claims

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Application Information

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IPC IPC(8): F28F1/00B21D39/00F28F3/00
CPCB21C37/151F25B39/00F28D1/0391F28F1/022F28F19/00
InventorNUMASAWA, MAKOTOKAIMURA, SATORUTANAKA, DAISHI
OwnerSHOWA DENKO KK