Title:
熱交換器および空気調和装置
Document Type and Number:
Japanese Patent JP6471824
Kind Code:
B2
Abstract:
Provided is a heat exchanger and an air conditioner each of which has a surface structure that can reduce adherence of frost by scattering condensed water even when used in a frosting environment. A heat exchanger includes a portion on whose surface a water-repellent coating is formed. The surface on which the water-repellent coating is formed has a surface structure that satisfies all of the following relationships: rw(entirety) > 0.6/|cosθw|, rw(protrusion) > 0.6/|cosθw|, 0.1 < d/L < 0.8, L < 3.0 µm, and 90° <θw < 120°, where L is an average pitch of protrusions, d is an average diameter of the protrusions, rw(entirety) is an average area-enlargement ratio of an entire surface, rw(protrusion) is an average area-enlargement ratio of surface protrusions, and θw is a contact angle of water on a flat surface of the water-repellent coating.
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Inventors:
Nagano Tomohiro
Hirokazu Fujino
Kaori Yoshida
Fujinami Isao
Fat Kumar Mondal
Yamaguchi
Hirokazu Fujino
Kaori Yoshida
Fujinami Isao
Fat Kumar Mondal
Yamaguchi
Application Number:
JP2018070179A
Publication Date:
February 20, 2019
Filing Date:
March 30, 2018
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F28F13/18; F24F1/14; F24F1/54; F24F11/41; F25B39/02; F28F1/32; F28F13/04
Domestic Patent References:
| JP2017115219A | ||||
| JP2011122769A | ||||
| JP2001248951A | ||||
| JP4178472A | ||||
| JP2017015377A | ||||
| JP2015183926A |
Foreign References:
| WO2015146681A1 | ||||
| WO2000050232A1 | ||||
| US20130115420 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation