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Patent Searching and Data


Title:
HEAT EXCHANGER, METHOD FOR PRODUCING HEAT EXCHANGER, AND REFRIGERANT CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/235557
Kind Code:
A1
Abstract:
Provided are a heat exchanger which has a surface structure that makes it possible to effectively inhibit frosting in a frosting environment, and a refrigerant cycle device. Provided is a heat exchanger (23) having a portion in which the surface thereof is provided with a water-repellent coating, wherein the surface provided with the water-repellent coating has a surface structure including a plurality of projections (61), and all relations D/L<0.36, D/L>0.4×(L/H), H>700nm, 0>1.28×D×10-2+2.77×(L-D)×10-3-1.1×D2×10-5-5.3×(L-D)2×10-7-9.8×D×(L-D)×10-6-2.0, and 90°<θ<120° are satisfied, where L is the average pitch between the plurality of projections, D is the average diameter of the plurality of projections, H is the average height of the plurality of projections, and θ is the contact angle of water on the smooth plane of the water-repellent coating.

Inventors:
MONDARU, Debukuma-ru
NAGANO, Tomohiro
FUJINO, Hirokazu
SATOU, Ken
TOYOYAMA, Kiyotaka
UKAI, Takuya
Application Number:
PCT/JP2021/019480
Publication Date:
November 25, 2021
Filing Date:
May 21, 2021
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, JP)
International Classes:
F25B39/02; F28F1/32; F28F13/04; F28F13/18; F24F1/0067; F24F1/18
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (1-4-19 Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, JP)
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