17-03-2022 дата публикации
Номер: US20220082308A1
A compressor () and an oil separator () are provided in a refrigerant circuit (). A flow-rate regulating valve () is provided in an oil return pipe () for returning a refrigerating-machine oil in the oil separator () to the compressor (). A temperature sensor () is provided downstream of the flow-rate regulating valve () in the oil return pipe (). The oil-amount determiner () determines whether an oil shortage state in which the amount of the refrigerating-machine oil held by the compressor () is insufficient is present, on the basis of a measured value obtained by the temperature sensor (). 1203131353531314040353531314141404020a,ba,ba,ba,ba,ba,ba,ba,b. A refrigeration apparatus comprising a refrigerant circuit () provided with a compressor () , an oil separator () configured to separate a refrigerant and a refrigerating-machine oil that are discharged from the compressor () from each other , an oil return pipe () for returning the refrigerating-machine oil in the oil separator () to the compressor () , and a throttle mechanism () configured to decompress a fluid that flows in the oil return pipe () , the refrigeration apparatus being configured to perform a refrigeration cycle by circulating a refrigerant in the refrigerant circuit () ,wherein the refrigeration apparatus comprises{'b': 42', '42', '41', '41', '40', '40, 'i': a,', 'b', 'a,', 'b', 'a,', 'b, 'a temperature sensor () configured to measure, downstream of the throttle mechanism (), a temperature of a fluid that flows in the oil return pipe (), and'}{'b': 71', '71', '31', '31', '42', '42, 'i': a,', 'b', 'a,', 'b', 'a,', 'b, 'an oil-amount determiner () configured to perform a determination operation of determining whether an oil shortage state in which an amount of the refrigerating-machine oil held by the compressor () is insufficient is present, based on a measured value obtained by the temperature sensor (), and'}{'b': 71', '71', '42', '42, 'i': a,', 'b', 'a,', 'b, 'the oil-amount determiner () is ...
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