Title:
AIR CONDITIONING DEVICE FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2024/090123
Kind Code:
A1
Abstract:
[Problem] To make it possible to smoothly transition from a hot gas heating operation to a heat absorption heating operation by defrosting an external heat exchanging unit while performing the hot gas heating. [Solution] This air conditioning device for a vehicle comprises a control device that controls a refrigerant circuit and an air conditioning unit. The refrigerant circuit has a hot gas bypass. The control device is capable of selectively performing a hot gas heating operation, in which a refrigerant does not absorb heat in an external heat exchange unit and the vehicle interior is heated by discharging heat from a portion of the refrigerant compressed by a compressor in an interior heat exchange unit, and a heat absorption heating operation, in which the refrigerant absorbs heat in the external heat exchange unit. While the hot gas heating operation is being performed, the external heat exchange unit is defrosted by supplying the refrigerant which has flowed through the interior heat exchange unit to the external heat exchange unit.
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/JP2023/035334
Publication Date:
May 02, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
SANDEN CORP (JP)
International Classes:
F25B1/00; B60H1/22; B60H1/32; F25B47/02
Foreign References:
| JP2021156567A | 2021-10-07 | |||
| JP2011031704A | 2011-02-17 | |||
| JP2016055813A | 2016-04-21 | |||
| JP2017226418A | 2017-12-28 |
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