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1. (WO2015045854) OIL SURFACE DETECTION DEVICE AND REFRIGERATING AIR CONDITIONER EQUIPPED WITH SAME

Pub. No.:    WO/2015/045854    International Application No.:    PCT/JP2014/073830
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Wed Sep 10 01:59:59 CEST 2014
IPC: F25B 49/02
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: OCHIAI, Yasutaka
落合 康敬
UNEZAKI, Fumitake
畝崎 史武
Title: OIL SURFACE DETECTION DEVICE AND REFRIGERATING AIR CONDITIONER EQUIPPED WITH SAME
Abstract:
An oil surface detection device that is mounted to a refrigerating air conditioner (1) and that detects the oil surface of oil that is stored within a compressor (21) that constitutes the refrigerating air conditioner (1) is provided with: an oil surface detection unit (70) that is provided to the outer surface of the compressor (21) and that detects the temperature of an installation location; a sensor output unit (35f) that outputs a signal that changes the operation state of the refrigerating air conditioner (1) to the refrigerating air conditioner (1); and a determination unit (35b) that determines the depletion of oil that is stored within the compressor (21) on the basis of a measurement value that is obtained by the oil surface detection unit (70) at least after the output of the signal that is output from the sensor output unit (35f).