Heat exchanger and manufacturing method therefor
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United States of America Patent
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-
Oct 10, 2023
Grant Date -
Dec 29, 2022
app pub date -
Jun 21, 2022
filing date -
Jun 23, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A heat exchanger includes a plurality of heat transfer tubes housed in a predetermined case, a connecting tube body for connecting the plurality of heat transfer tubes, a predetermined tube expansion portion provided on each heat transfer tube, a first peripheral wall portion provided on the tube expansion portion, and a second peripheral wall portion that is positioned on an end portion of the connecting tube body and fitted to the tube expansion portion, wherein the first and second peripheral wall portions have different sectional shapes and are fitted together in a partial contact state including predetermined contact and non-contact portions. According to this configuration, the heat transfer tubes can be fixed to a side wall portion of the case and the connecting tube body can be connected to the heat transfer tubes easily and appropriately.
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