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:
Apr. 17, 2018
Filed:
Nov. 11, 2013
Sanden Holdings Corporation, Isesaki-shi, Gunma, JP;
Ryo Miyakoshi, Isesaki, JP;
Kenichi Suzuki, Isesaki, JP;
Hidenori Takei, Isesaki, JP;
Kouhei Yamashita, Isesaki, JP;
Sanden Holdings Corporation, Isesaki-shi, Gunma, JP;
Abstract
A vehicle air conditioner which improves the frost formation judging precision of an outdoor heat exchanger, acquires the heating performance, and avoids unnecessary defrosting. A controller executes a heating mode. The controller () judges frost formation onto the outdoor heat exchanger () on the basis of a refrigerant evaporation pressure PXO of the outdoor heat exchanger () and a refrigerant evaporation pressure PXObase of the outdoor heat exchanger () during non-frost formation or on the basis of a refrigerant evaporation temperature TXO of the outdoor heat exchanger () and a refrigerant evaporation temperature TXObase of the outdoor heat exchanger () during the non-frost formation, and allows a high-temperature refrigerant gas to flow through the outdoor heat exchanger (), thereby performing defrosting of the outdoor heat exchanger ().