Title:
AIR CONDITIONER AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/228513
Kind Code:
A1
Abstract:
This air conditioner comprises: gas-side refrigerant piping that connects a user-side heat exchanger and a heat source-side heat exchanger; liquid-side refrigerant piping that connects the user-side heat exchanger and the heat source-side heat exchanger; a gas side shutoff mechanism arranged in the gas-side refrigerant piping; a liquid-side shutoff mechanism arranged in the liquid-side refrigerant piping; and a control unit that performs a refrigerant recovery operation when refrigerant leakage is detected, wherein the gas-side shutoff mechanism allows the refrigerant to flow in both directions in an energized state and allows the refrigerant to flow only from the user-side heat exchanger side to the heat source-side heat exchanger side in a de-energized state, the liquid-side shutoff mechanism allows the refrigerant to flow in both directions in an energized state and allows the refrigerant to flow only from the user-side heat exchanger side to the heat source-side heat exchanger side in a de-energized state, and the control unit de-energizes the gas-side shutoff mechanism during the refrigerant recovery operation. As a result, the air conditioner can energize to an open state only one of the gas-side shutoff mechanism and the liquid-side shutoff mechanism during operation.
Inventors:
AKETAGAWA MIKI (JP)
KOYANO TAKEHIRO (JP)
KOYANO TAKEHIRO (JP)
Application Number:
PCT/JP2023/008607
Publication Date:
November 30, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B49/00; F24F11/30; F24F11/36; F25B1/00; F25B41/24
Domestic Patent References:
| WO2011099058A1 | 2011-08-18 | |||
| WO2016088167A1 | 2016-06-09 | |||
| WO2011092742A1 | 2011-08-04 |
Foreign References:
| JPS59101171U | 1984-07-07 | |||
| JP2002061996A | 2002-02-28 | |||
| JP2018036029A | 2018-03-08 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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