Title:
VEHICLE AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/054043
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a vehicle air conditioning device with which it is possible for the heating efficiency of a vehicle interior to be improved effectively by making more effective use of waste heat from a heat generating appliance mounted in the vehicle. The present invention provides a vehicle air conditioning device with which it is possible for the heating efficiency of the vehicle interior to be improved effectively by making more effective use of waste heat from a heat generating appliance mounted in the vehicle. This vehicle air conditioning device has: a first waste heat recovery space heating mode in which a refrigerant discharged from a compressor (2) is caused to dissipate heat in a heat dissipator (4), causing the refrigerant from which the heat has been dissipated to be decompressed, and is then caused to absorb heat in a waste heat recovery heat exchanger (64), in such a way that a heat medium temperature (Tw) lies within a waste heat recovery appropriate temperature range; and a second waste heat recovery space heating mode in which the refrigerant discharged from the compressor (2) is caused to dissipate heat in the heat dissipator (4), causing the refrigerant from which the heat has been dissipated to be decompressed, and is then caused to absorb heat in the waste heat recovery heat exchanger (64), even if the heat medium temperature (Tw) drops below the lower limit of the waste heat recovery appropriate temperature range.
Inventors:
SHIMIZU NOBUTAKA (JP)
HARAGUCHI TOMONORI (JP)
HARAGUCHI TOMONORI (JP)
Application Number:
PCT/JP2020/031580
Publication Date:
March 25, 2021
Filing Date:
August 21, 2020
Export Citation:
Assignee:
SANDEN ADVANCED TECH CORPORATION (JP)
International Classes:
F01P7/16; B60H1/22; B60L58/24; F01P3/12; F25B1/00
Foreign References:
| JP2013093953A | 2013-05-16 | |||
| JP2013075650A | 2013-04-25 | |||
| JP2019146442A | 2019-08-29 | |||
| JP2019038352A | 2019-03-14 | |||
| JP2015205668A | 2015-11-19 |
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