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:
Feb. 07, 2017
Filed:
Jun. 12, 2013
Sanden Corporation, Isesaki-shi, Gunma, JP;
Junichiro Kasuya, Isesaki, JP;
Sanden Holdings Corporation, Isesaki-shi, Gunma, JP;
Abstract
The heating capacity particularly at low outside air temperatures in a vehicular air-conditioning unit that heats the vehicle interior by heat pump operation of a refrigerant circuit using a compressor is improved. During heating, a refrigerant discharged from a compressorreleases heat in a radiatorinto the vehicle interior, and the refrigerant decompressed after the heat release in the radiator evaporates in at least one of an external heat exchangerand a ventilation heat exchanger. During cooling, the refrigerant discharged from the compressor releases heat in the external heat exchanger, and the refrigerant decompressed after the heat release in the external heat exchanger evaporates in an internal heat exchangerto absorb heat from the vehicle interior. The vehicular air-conditioning unit includes a hot gas cycle circuitfor decompressing a part of the refrigerant discharged from the compressor, and causing the decompressed part of the refrigerant to flow through the internal heat exchanger to release heat into the vehicle interior.