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:
Dec. 07, 2021
Filed:
Apr. 23, 2018
Sanden Automotive Climate Systems Corporation, Isesaki, JP;
Ryo Miyakoshi, Isesaki, JP;
Megumi Shigeta, Isesaki, JP;
Osamu Takazawa, Isesaki, JP;
Kohei Yamashita, Isesaki, JP;
Sanden Automotive Climate Systems Corporation, Isesaki, JP;
Abstract
A vehicle air-conditioning device is provided which is capable of eliminating or suppressing vibration and noise generated due to the application of a counterpressure to an opening/closing valve. The vehicle air-conditioning device includes a refrigerant circuit R having a compressor, a radiatorto perform heat exchange between a refrigerant and air, an outdoor heat exchanger, a heat absorber, and a solenoid valve. The compressorand the solenoid valveare controlled to air-condition a vehicle interior. A decompression speed at a refrigerant inflow side of the solenoid valve when the compressoris stopped and the solenoid valveis closed is faster than that at a refrigerant outflow side thereof. When operation is stopped from a state in which the compressoris operating with the solenoid valvebeing in an opened state, the opened state of the solenoid valveis maintained even after the compressoris stopped.