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:
May. 12, 2020
Filed:
Jun. 07, 2016
Sanden Automotive Climate Systems Corporation, Isesaki-shi, JP;
SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION, Gunma, JP;
Abstract
Heat pump type air conditioner for a vehicle in which a noise generated in opening an opening/closing valve (a solenoid valve) during changing of an operation mode is eliminated or reduced. The air conditioner has a dehumidifying and heating mode to let a refrigerant radiate heat in a radiator, decompress the refrigerant, and let the refrigerant absorb heat in heat absorberand outdoor heat exchanger, and a cooling mode to let the refrigerant radiate heat in the outdoor heat exchanger, decompress the refrigerant, and let the refrigerant absorb heat in the heat absorber. Solenoid valveand solenoid valveopened in the dehumidifying and heating mode. When changing an operation mode from the cooling mode to the dehumidifying and heating mode, a difference between a pressure before each solenoid valve and a pressure after the valve is reduced, and then these valves are opened.