REFRIGERATION CYCLE DEVICE
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United States of America Patent
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Aug 16, 2016
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Feb 18, 2014
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Abstract
According to one embodiment, a refrigeration cycle device includes a refrigeration cycle with a plurality of expansion valves and a detector. The detector predicts a first total degree of opening of the valves at a first time point on the assumption that there is no refrigerant leakage in the cycle, based on a change to a first state quantity of the cycle at the first time point from a second state quantity of the cycle at a second time point. The detector detects refrigerant leakage of the cycle by comparing the first total degree of opening with a second total degree of opening which is an actual total degree of opening of the valves at the first time point.
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