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:
Sep. 14, 2021
Filed:
May. 23, 2019
Denso Corporation, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A vehicle air conditioning device includes a compressor, a radiator, an outside heat exchanger, an evaporator, a first decompressor, a second decompressor, a switching portion, and a controller. The radiator exchanges heat between a refrigerant discharged from the compressor and air. The outside heat exchanger exchanges heat between outside air and the refrigerant flowing out of the radiator. The evaporator is exchanges heat between the refrigerant flowing out of the outside heat exchanger and the air flowing through the radiator. The switching portion switches between a series dehumidifying-heating mode and a parallel dehumidifying-heating mode. The controller is configured to control the switching portion to switch from the parallel dehumidifying-heating mode to the series dehumidifying-heating mode when the amount of the refrigerant oil flowing from the outside heat exchanger to the compressor is insufficient in the parallel dehumidifying-heating mode.