The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2024
Filed:
Nov. 02, 2022
Daikin Industries, Ltd., Osaka, JP;
Debukuma-ru Mondaru, Osaka, JP;
Tomohiro Nagano, Osaka, JP;
Hirokazu Fujino, Osaka, JP;
Ken Satou, Osaka, JP;
Kiyotaka Toyoyama, Osaka, JP;
Takuya Ukai, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A heat exchanger includes: a water-repellent coating film on part of a surface of the heat exchanger. The surface on which the water-repellent coating film is disposed includes a surface structure including protrusions. D/L<0.36, D/L>0.4×(L/H), D<200, L−D<1000, H>700, 0>1.28×D×10+2.77 ×(L−D)×10−1.1×D×10−5.3×(L−D)×10−9.8×D×(L−D)×10−2.0, and 90°<θ<120°, where L is an average pitch of the protrusions in nm, D is an average diameter of the protrusions in nm, H is an average height of the protrusions in nm, and θ is a contact angle of water on a smooth plane of the water-repellent coating film.