Outdoor unit with at least three compressors for use with air conditioners

A capacity shortfall in an indoor unit at a high load is prevented. An outdoor unit (10) includes at least three compressors (CM1, CM2, CM3) and has an oil equalization mode function for maintaining a proper oil level in each of the compressors (CM1, CM2, CM3). The outdoor unit (10) includes a contr...

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Bibliographische Detailangaben
Hauptverfasser:	HAMACHIYO, TAKASHI, ISOZUMI, SHINICHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	A capacity shortfall in an indoor unit at a high load is prevented. An outdoor unit (10) includes at least three compressors (CM1, CM2, CM3) and has an oil equalization mode function for maintaining a proper oil level in each of the compressors (CM1, CM2, CM3). The outdoor unit (10) includes a controller (12) that controls starting and stopping of the compressors (CM1, CM2, CM3) in the oil equalization mode such that one of the compressors (CM1, CM2, CM3) at a time is stopped or operated at a low load while the other compressors (CM1, CM2, CM3) are operated.