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:
Sep. 10, 1991
Filed:
Jun. 20, 1990
Applicant:
Inventors:
Tadao Otoh, Ohta, JP;
Yoshihisa Ishida, Gunma, JP;
Satoshi Ohya, Gunma, JP;
Masaki Ishiguro, Ohta, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F25D / ;
U.S. Cl.
CPC ...
62155 ; 62156 ;
Abstract
A defrosting controller for use with a refrigeration system determines calculating a frost melting period from the measurements of the evaporator temperature during defrosting by means of an evaporator temperature sensor, establishes a refrigerating operation rate which is the ratio of the period of the frost melting process to the (total) open period of an electronic motor-driven valve during the refrigeration, and then decides whether the next defrosting operation is to be skipped or not.