Title:
OUTDOOR UNIT FOR REFRIGERATION DEVICE AND REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/176870
Kind Code:
A1
Abstract:
This outdoor unit for a refrigeration device is provided to a first refrigerant circuit in which a first refrigerant circulates, and is connected to a first expansion valve and a first evaporator. The outdoor unit for a refrigeration device is provided with a first compressor, a first condenser, a second refrigerant circuit, a first heat exchanger, and a control device. The first compressor compresses the first refrigerant, and the first condenser condenses the first refrigerant. The second refrigerant circuit has a second compressor, and allows circulation of a second refrigerant. The first heat exchanger is provided to a first refrigerant circuit and a second refrigerant circuit, and performs heat exchange between the first refrigerant and the second refrigerant. The control device causes the first compressor to execute a first operation which is either a pump-down operation or a pull-down operation. When causing the first compressor to execute the first operation, the control device causes the second compressor to operate such that the evaporation temperature of the second refrigerant in the first heat exchanger reaches a target evaporation temperature. The target evaporation temperature is set by the control device such that the temperature of the second refrigerant flowing into the first heat exchanger is lower than the temperature of the first refrigerant flowing into the first heat exchanger.
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Inventors:
IUCHI HIROYA (JP)
ISHIHARA NOBUYA (JP)
YASHIRO TAKANORI (JP)
ISHIHARA NOBUYA (JP)
YASHIRO TAKANORI (JP)
Application Number:
PCT/JP2023/010011
Publication Date:
September 21, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B7/00; F25B1/00
Domestic Patent References:
| WO2014024837A1 | 2014-02-13 | |||
| WO2014038028A1 | 2014-03-13 | |||
| WO2017175299A1 | 2017-10-12 | |||
| WO2022224382A1 | 2022-10-27 |
Foreign References:
| JP2000274849A | 2000-10-06 | |||
| CN113776215A | 2021-12-10 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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