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.:

US 6988374 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 24, 2006

Filed:

Sep. 27, 2004
Applicants:

Young-soo Chang, Seoul, KR;

Dae-young Lee, Seoul, KR;

Inventors:

Young-Soo Chang, Seoul, KR;

Dae-Young Lee, Seoul, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D 21/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A frostless heat exchanger used for an air-source system, comprises: an antifreezing solution supplying device for applying an antifreezing solution having a freezing point lower than a surface temperature of the heat exchanger on a surface of the heat exchanger to form a thin solution film on the surface of the heat exchanger in order to prevent formation of frost on the surface of the heat exchanger when the surface temperature of the heat exchanger drops below a freezing point of water (0° C.), so that the vapor is removed in such a manner that a highly concentrated antifreezing solution and the vapor are mixed together before the vapor becomes a supersaturated liquid and then grows to a frost crystal nucleus.


Find Patent Forward Citations

Chang, Young-Soo. (2006). Frostless heat exchanger and defrosting method thereof (U.S. Patent No. 6988374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6988374

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