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Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/011994
Kind Code:
A1
Abstract:
Provided is an air conditioning device having a refrigerant circuit which is formed by connecting an outdoor unit and a plurality of indoor units by refrigerant piping and through which a refrigerant is circulated. The air conditioning device comprises: a refrigerant leakage detection device which is provided in a space to be air conditioned and which detects the leakage of the refrigerant to the space to be air conditioned; a plurality of refrigerant pressure detection devices provided to the refrigerant piping and detecting the pressure of the refrigerant flowing through the refrigerant piping; a refrigerant shutoff valve provided in the refrigerant piping and permitting or preventing the flow of the refrigerant; and a control device for controlling the opening and closing of the refrigerant shutoff valve. The control device determines, on the basis of the result of detection by the refrigerant leakage detection device or the refrigerant pressure detection devices, whether the refrigerant has leaked. Upon determining that the refrigerant has leaked, the control device performs control to close the refrigerant shutoff valve and specifies the location of the leakage of the refrigerant on the basis of a variation in the pressure of the refrigerant within the refrigerant piping, the variation being detected by the refrigerant pressure detection devices.

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Inventors:
MOTOMURA YUJI (JP)
Application Number:
PCT/JP2016/071081
Publication Date:
January 18, 2018
Filing Date:
July 15, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B49/02
Domestic Patent References:
WO2011099063A12011-08-18
Foreign References:
JP2005241050A2005-09-08
JPH04184055A1992-07-01
JP2003130482A2003-05-08
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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