Heat exchanger

WO2026062934A1PCT designated stage Publication Date: 2026-03-26SANDEN CORP
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-03-24
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

Conventional heat exchangers with side tanks experience deformation and appearance defects due to the use of fixing jigs during brazing, particularly when a metal material with a lower coefficient of thermal expansion is used, leading to insufficient strength and localized stress concentration.

Method used

A heat exchanger design that incorporates a fixing jig support portion on the outside of the flow path, comprising a three-layer structure of the first tank member, second tank member, and side plate, with a guide portion to secure the fixing jig in a predetermined position, enhancing the strength and distributing the pressing force.

Benefits of technology

The design effectively suppresses deformation and appearance defects of the side tank, maintaining structural integrity and preventing performance degradation by distributing the pressing force and reducing localized stress concentration.

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  • Figure JP2025011347_26032026_PF_FP_ABST
    Figure JP2025011347_26032026_PF_FP_ABST
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Abstract

[Problem] To provide a heat exchanger in which it is possible to suppress deformation and deterioration of a side tank caused by a fixing jig during brazing. [Solution] A heat exchanger 1 comprises: a core part 10 in which tubes 100 are integrated and arranged; a side plate 13; and a side tank 60 having a heat medium flow passage 64 that is partitioned by making a first tank member 601 and a second tank member 602 face each other. A fixing jig support part 110 is provided by overlapping the first tank member 601, the second tank member 602, and the side plate 13A at least at a portion where a fixing jig Jw abuts on the outside of the flow passage 64.
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