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:
Jan. 21, 2020
Filed:
Apr. 08, 2019
Sanden Holdings Corporation, Isesaki-shi, Gunma, JP;
SANDEN HOLDINGS CORPORATION, Isesaki-shi, Gunma, JP;
Abstract
There is disclosed a vehicle air conditioning device of a heat pump system which delays proceeding of frosting onto an outdoor heat exchanger, thereby eliminating or inhibiting deterioration of a heating capability due to the frosting. The vehicle air conditioning device executes a heating mode in which a controller lets a refrigerant discharged from a compressorradiate heat in a radiatordecompresses the refrigerant by which heat has been radiated, and then lets the refrigerant absorb heat in an outdoor heat exchangerand on the basis of a difference ΔTXO=(TXObase−TXO) between a refrigerant evaporation temperature TXObase of the outdoor heat exchangerin non-frosting and a refrigerant evaporation temperature TXO of the outdoor heat exchangerthe controller corrects a target subcool degree TGSC that is a target value of a subcool degree of the refrigerant in the radiatorin an increasing direction in accordance with increase of the difference ΔTXO.