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:
Oct. 24, 2023
Filed:
Aug. 23, 2019
Sanden Holdings Corporation, Isesaki, JP;
Nobutaka Shimizu, Isesaki, JP;
SANDEN CORPORATION, Gunma, JP;
Abstract
A vehicle air-conditioning apparatus heat pump system configured so that an excessive increase in the temperature (superheat degree) of refrigerant discharged from a compressor can be prevented in air-heating operation. The heat pump system (HP) includes a compressor (C) and an indoor heat exchanger (HXC) on a refrigerant circuit (RC). A first branched flow path (BC) on which a first expansion mechanism (EX) with an adjustable opening degree and a first heat absorption heat exchanger (HXA) are arranged in series and a second branched flow path (BC) on which a second expansion mechanism (EX) with an adjustable opening degree and a second heat absorption heat exchanger (HXA) are arranged in series, where the first branched flow path (BC) and the second branched flow path (BC) are arranged in parallel on the refrigerant circuit extending from the indoor heat exchanger to the compressor.