Title:
VEHICLE AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/090119
Kind Code:
A1
Abstract:
[Problem] To eliminate a feeling of discomfort or anxiety for an occupant during preparatory operation performed during startup of a hot gas space heating operation. [Solution] This vehicle air conditioning device comprises a refrigerant circuit including a compressor, an indoor heat exchanging portion, and an external heat exchanging portion, an air conditioning unit inside which the indoor heat exchanging portion is disposed, and a control device for controlling the refrigerant circuit and the air conditioning unit, wherein: the refrigerant circuit includes a hot gas bypass for reducing the pressure of at least a portion of a refrigerant that has been compressed by the compressor, and returning the refrigerant to the compressor, without passing through the indoor heat exchanging portion and the external heat exchanging portion; the control device is capable of executing a hot gas space heating operation in which heat is not absorbed by the refrigerant in the external heat exchanging portion, and all or a portion of the refrigerant compressed by the compressor is caused to dissipate heat in the indoor heat exchanging portion to heat a vehicle cabin interior; during startup of the hot gas space heating operation, preparatory operation is performed in which dissipation of heat in the indoor heat exchanging portion is prevented or suppressed until the refrigerant reaches a predetermined state, and the refrigerant is circulated in the refrigerant circuit; and during the execution of the preparatory operation, an occupant is notified that the preparatory operation is being executed.
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Inventors:
OKADA MIZUKI (JP)
HUANG YUNSHENG (JP)
MAJIMA HIROTO (JP)
ZHANG HONGMING (JP)
HUANG YUNSHENG (JP)
MAJIMA HIROTO (JP)
ZHANG HONGMING (JP)
Application Number:
PCT/JP2023/035330
Publication Date:
May 02, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
SANDEN CORP (JP)
International Classes:
B60H1/00; B60H1/22
Domestic Patent References:
| WO2022201568A1 | 2022-09-29 |
Foreign References:
| JPH0478716A | 1992-03-12 |
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