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:
Aug. 05, 2025
Filed:
Aug. 04, 2023
Phc Holdings Corporation, Tokyo, JP;
Mitsuyuki Shirata, Ehime, JP;
Naoki Yanagihara, Gunma, JP;
PHC HOLDINGS CORPORATION, Tokyo, JP;
Abstract
A cold storage includes a box with a cold storage chamber, a compressor constituting a refrigeration circuit that cools the inside of the cold storage chamber, a defrost heater that heats an evaporator constituting the refrigeration circuit, and a control apparatus that controls the compressor and the defrost heater. The control apparatus operates the defrost heater when the compressor is not operated. When an outside air temperature is equal to or higher than a chamber temperature in the cold storage chamber, the control apparatus operates the compressor upon the chamber temperature rising up to a first threshold and stops the compressor upon the chamber temperature dropping down to a second threshold lower than the first threshold. When the outside air temperature is lower than the chamber temperature, the control apparatus does not operate the compressor even when the chamber temperature rises up to the first threshold.