Title:
VEHICLE AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/027027
Kind Code:
A1
Abstract:
The present invention ensures a sufficient heating capacity without using an auxiliary heater. The present invention provides a vehicle air-conditioning device comprising a refrigerant circuit that includes a compressor which compresses a refrigerant, an indoor heat exchanger which is for performing heat exchange of heat of the refrigerant compressed by the compressor for air to be supplied to the vehicle interior, and a heat exchanger for heat absorption which exchanges heat between the refrigerant and outside air or an other heating medium, and a control device that controls said refrigerant circuit, wherein: the refrigerant circuit has a hot gas circuit that bypasses an outdoor heat exchanger and that makes the refrigerant flow from the downstream side of the indoor heat exchanger into the intake side of the compressor; the control device can selectively execute a plurality of heating modes including a hot gas heating mode in which the refrigerant is circulated by the hot gas circuit and the vehicle interior is heated by the heat of the refrigerant compressed by the compressor with no heat exchange performed in the heat exchanger between the refrigerant and the outside air or the other heating medium; and a hot gas heating selection condition for selecting the hot gas heating mode is set.
Inventors:
OKAMOTO YOSHIYUKI (JP)
HUANG YUNSHENG (JP)
SHIGETA MEGUMI (JP)
MIYAKOSHI RYO (JP)
TOYAMA TAKASHI (JP)
HUANG YUNSHENG (JP)
SHIGETA MEGUMI (JP)
MIYAKOSHI RYO (JP)
TOYAMA TAKASHI (JP)
Application Number:
PCT/JP2022/031568
Publication Date:
March 02, 2023
Filing Date:
August 22, 2022
Export Citation:
Assignee:
SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORP (JP)
International Classes:
B60H1/22
Foreign References:
| JP2000343934A | 2000-12-12 | |||
| JP2012188108A | 2012-10-04 |
Attorney, Agent or Firm:
EBISU INTERNATIONAL PATENT OFFICE (JP)
Download PDF: