Tube for heat exchanger

A technology of heat exchanger and heat exchange medium, which is used in heat exchanger fixing, heat exchange equipment, indirect heat exchanger, etc., can solve the problems of unstable brazing performance of flat tubes, and achieve the effect of improving brazing performance
CN103201582AInactive Publication Date: 2013-07-10DENSO CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DENSO CORP
Publication Date
2013-07-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

A tubular member (20) that constitutes a tube for a heat exchanger comprises a pair of flat sections (21, 22) that are aligned in parallel so as to face one another in the short-axis direction of the channel cross section, and a pair of curved sections (23, 24) that face one another in the long-axis direction of the channel cross section and connect the pair of flat sections (21, 22) to one another. One of the curved sections (23, 24) constitutes a joint part at which an outer wall portion (241), which extends from an end of the pair of flat sections (21, 22) and constitutes a part of the outer wall of the tubular member (20), and an inner wall portion (242), which extends from an end of the pair of flat sections (21, 22) and constitutes a part of the inner wall of the tubular member (20), overlap and are joined by brazing. The inner wall portion (242) is joined in a manner such that the portion facing the outer wall (241) is closely adhered thereto, and the leading end (244) facing the flat section (21) is spaced apart from the flat section (21).
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Description

[0001] Cross references to related applications

[0002] This application is based on the Japanese Patent Application (2010-252807) filed on November 11, 2010, and the content of the application is incorporated herein by reference in its entirety. Technical field

[0003] The present invention relates to a tube for a heat exchanger, and the tube can be usefully applied to a radiator such as an automobile. Background technique

[0004] A flat tube formed by bending a plate-shaped member (for example, a metal plate) has been known as a tube for a heat exchanger. These flat tubes and corrugated fins are alternately stacked on each other to thereby form a heat exchange core, and a header tank and pipes for introducing a heat exchange medium are coupled to the heat exchange core, thereby constructing a heat exchanger.

[0005] This flat tube is formed as follows: a pair of flat plate portions facing each other with a given gap in the short radius direction between the pair of flat plate p...

Claims

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