Title:
SHOWCASE
Document Type and Number:
WIPO Patent Application WO/2021/111624
Kind Code:
A1
Abstract:
This showcase has: a refrigerant circuit in which a compressor, a condenser, a throttle device, and an evaporator are connected by piping and through which a refrigerant circulates; a blower that supplies air to the condenser; a pressure sensor that is provided on the refrigerant discharge side of the compressor and detects the discharge pressure of the refrigerant; and a control device that stops the compressor when the discharge pressure is a predetermined first threshold or more. The control device has: a determination means for determining the magnitude of the first threshold and a second threshold which corresponds to the minimum air volume, which is the air volume at which the air volume supplied to the condenser by the blower makes the refrigerant concentration smaller than a lower combustion limit; and a compressor control means for stopping the compressor when the second threshold is determined by the determination means to be equal to or greater than the first threshold and the discharge pressure reaches the first threshold.
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Inventors:
SUGIMOTO TAKESHI (JP)
OBAYASHI TOMOYOSHI (JP)
JITSUKAWA KENICHI (JP)
HOSAKA TAKASHI (JP)
HOSAKA KEIKO (JP)
OBAYASHI TOMOYOSHI (JP)
JITSUKAWA KENICHI (JP)
HOSAKA TAKASHI (JP)
HOSAKA KEIKO (JP)
Application Number:
PCT/JP2019/047869
Publication Date:
June 10, 2021
Filing Date:
December 06, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MITSUBISHI ELECTRIC APPLIED REFRIGERATION SYSTEMS CO LTD (JP)
MITSUBISHI ELECTRIC APPLIED REFRIGERATION SYSTEMS CO LTD (JP)
International Classes:
F25D11/00; F25B1/00
Domestic Patent References:
| WO2019224870A1 | 2019-11-28 | |||
| WO2018151178A1 | 2018-08-23 |
Foreign References:
| JP2012107823A | 2012-06-07 | |||
| JP2008138914A | 2008-06-19 | |||
| JP2000074508A | 2000-03-14 | |||
| JPH08327195A | 1996-12-13 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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