REFRIGERATION APPARATUS

A refrigeration apparatus (10) includes a bearing monitor (23). If an abnormal state condition is satisfied, the bearing monitor (23) performs an abnormal-state operation for coping with poor lubrication on a plain bearing of a compressor (50). The abnormal state condition is a condition indicating...

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Bibliographische Detailangaben
Hauptverfasser:	FURUGAKI, Takashi, TANAKA, Masaru
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	A refrigeration apparatus (10) includes a bearing monitor (23). If an abnormal state condition is satisfied, the bearing monitor (23) performs an abnormal-state operation for coping with poor lubrication on a plain bearing of a compressor (50). The abnormal state condition is a condition indicating that a rate of change of current exceeds a first reference value. The rate of change of current is an amount of change in a driving current for driving the compressor (50) (i.e., a value measured by a current sensor) per unit time. A drive shaft of the compressor (50) has a journal portion supported by the plain bearing and having a surface roughness Ra greater than or equal to 0.05 µm.