Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/195114
Kind Code:
A1
Abstract:
This air conditioning device comprises a gas furnace unit, a heat pump heat source unit, and one or a plurality of utilization units. The gas furnace unit comprises a blower provided on an air inlet side, and a first heat exchanger provided on the side of an outlet for air taken in by the blower. The utilization unit is provided with a second heat exchanger provided on the outlet side after the air taken in by the blower has passed through the first heat exchanger. The air conditioning device has a first operating mode in which the gas furnace unit is used to perform a space heating operation, a second operating mode in which the heat pump heat source unit is used to perform the space heating operation, and a third operating mode in which the heat pump heat source unit is used to perform a space cooling operation, wherein, when switching from the first operating mode to the second operating mode, refrigerant discharge control is performed to temporarily move refrigerant on the heat pump heat source unit side to the second heat exchanger side of the utilization unit when a compressor provided in the heat pump heat source unit is started up.
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Inventors:
IKEDA KEISUKE (JP)
HORIE MASAO (JP)
HORIE MASAO (JP)
Application Number:
PCT/JP2022/017222
Publication Date:
October 12, 2023
Filing Date:
April 07, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F11/65
Domestic Patent References:
| WO2020021661A1 | 2020-01-30 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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