Heat exchanger
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United States of America Patent
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Feb 2, 1993
Grant Date -
N/A
app pub date -
Oct 28, 1991
filing date -
Oct 31, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
A heat exchanger comprises a plurality of flat tubes, a pair of hollow headers connected to both ends of each of the flat tubes in fluid communication with them, and at least one fastener secured to the headers. The fastener comprises at least one self-retainable embracing portion capable of resiliently engaging the exterior of the header to keep the fastener in place prior to brazing the components of the exchanger together. The fastener can be temporarily connected, without the aid of any special tools, on a heat exchanger body before brazing with a 'one-shot' procedure, thus rendering easy the manufacture of the heat exchanger. Since special tools are unnecessary, a greater number of temporarily assembled heat exchangers can be accommodated in one oven, thus improving, to a remarkable degree, the productivity in manufacture of the heat exchanger.
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