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US 2018/0320989 A1Published application
Heat exchanger
AssigneeMitsubishi Electric Corporation
InventorToshimichi Baba
Life of this patent
Estimating the term…
Abstract
A fin has a U-form cutaway portion into which a flat tube is fitted and a fin collar standing inclined from an edge portion of the cutaway portion, and an opened end width W2 of the cutaway portion is formed to be larger than an outer width W1 of the flat tube. Also, the fin collar has a fin collar inclined face portion standing inclined with respect to a fin flat face from the edge portion of the cutaway portion, and a fin collar end face portion bent from an end portion of the fin collar inclined face portion and in surface contact with an outer face of the flat tube.
Claims10
A heat exchanger, comprising:
- a multiple of a flat tube that forms a passage of a heat conducting medium and whose cross-section is of a flat form;
- and
- a multiple of a fin, fixed to the flat tube, whose main flat face is perpendicular to a passage direction of the flat tube, and which is disposed at intervals in the passage direction, wherein
- the fin has a cutaway portion into which the flat tube is fitted and a fin collar standing erect from an edge portion of the cutaway portion,
- an opened end of the cutaway portion is larger than an outer width of the flat tube,
- an aperture form of the cutaway portion is U-form, one semi-circular end portion of the flat tube is fitted into a semi-circular portion forming a closed end of the cutaway portion, and
- the fin collar has a fin collar inclined face portion standing inclined with respect to a fin flat face from the edge portion of the cutaway portion, and a fin collar end face portion bent from an end portion of the fin collar inclined face portion and in surface contact with an outer face of the flat tube.
4 more elements
Dependencies are inferred from the claim text.