Title:
VEHICLE AIR-CONDITIONING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/090125
Kind Code:
A1
Abstract:
[Problem] To enable swift start of the hot-gas heating operation by reducing the time for a preparatory operation performed when initiating the hot-gas heating operation. [Solution] This vehicle air-conditioning apparatus is equipped with a control device that controls a refrigerant circuit and an air-conditioning unit. The refrigerant circuit has a hot-gas bypass in which at least a portion of a refrigerant compressed by a compressor is decompressed without passing through an indoor heat exchanger or an outdoor heat exchanger and is returned to the compressor. The control device is capable of performing a hot-gas heating operation for heating the interior of a vehicle by not causing the refrigerant to absorb heat at the outdoor heat exchanger but by causing a portion of the refrigerant compressed by the compressor to release heat at the indoor heat exchanger. The control device performs, at the time of initiating the hot-gas heating operation, a start-up operation in which all of the refrigerant compressed by the compressor is to circulate through the hot-gas bypass.
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/JP2023/035336
Publication Date:
May 02, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
SANDEN CORP (JP)
International Classes:
B60H1/22; B60H1/32; F25B1/00
Foreign References:
| JPH06135219A | 1994-05-17 | |||
| JP2004182110A | 2004-07-02 | |||
| JPH06227246A | 1994-08-16 |
Download PDF:
Previous Patent: VEHICLE AIR CONDITIONING DEVICE
Next Patent: CONTROL METHOD, CONTROL DEVICE, LITHOGRAPHY DEVICE, AND ARTICLE MANUFACTURING METHOD
Next Patent: CONTROL METHOD, CONTROL DEVICE, LITHOGRAPHY DEVICE, AND ARTICLE MANUFACTURING METHOD