Refrigerating cycle apparatus

A refrigerating cycle apparatus equipped with, for each of a plurality of outdoor units, a plurality of high pressure type compressors having a casing held with an oil, and having a high pressure side tube to which a discharge tube of the compressor is connected and a low pressure side tube to which...

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Bibliographic Details
Main Author UENO, KIYOTAKA
Format Patent
LanguageEnglish
French
German
Published 21.12.2011
Subjects
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
WEAPONS
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Summary:A refrigerating cycle apparatus equipped with, for each of a plurality of outdoor units, a plurality of high pressure type compressors having a casing held with an oil, and having a high pressure side tube to which a discharge tube of the compressor is connected and a low pressure side tube to which a suction tube of the compressor is connected, comprising: a first oil balancing tube for each outdoor unit, configured to allow a flowing-in of an excess portion of the oil held in the casing of the respective compressor; a first pressure reducing device configured to be mounted on the first oil balancing tube; an oil tank, for each outdoor unit, configured to allow a flowing-in of the oil in the respective first oil balancing tube; a second oil balancing tube, for each outdoor unit, configured to connect the oil tank and the suction tube; a second pressure reducing device configured to be mounted on the respective second oil balancing tube; a bypass tube for each outdoor unit, configured to be connected between the high pressure side tube and the oil tank; a third pressure reducing device configured to be mounted on the bypass tube a first opening/closing valve configured to be connected in parallel with the third pressure reducing device; a third oil balancing tube, for each outdoor unit, configured to be connected between the oil tank and the low pressure side tube; second and third opening/closing valves configured to be provided at the respective third oil balancing tube; and a balancing tube configured to be connected between mutual connections at a position between the second and third opening valves of the third oil balancing tube.
Bibliography:Application Number: EP20110175740