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(11) | EP 2 735 822 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Refrigeration/air-conditioning apparatus |
| (57) The invention provides a refrigeration/air-conditioning apparatus (1) which can bypass
an appropriate amount of liquid refrigerant to suppress a rise in discharge temperature,
while suppressing, as much as possible, the opening/closing frequency of an electromagnetic
valve (9), and in which it is possible to form a liquid bypass circuit (8) with a
low-cost and simple structure. The refrigeration/air-conditioning apparatus (1), which
is equipped with a liquid bypass circuit (8) provided with an electromagnetic valve
(9), between a high-pressure liquid line (6B) in a refrigeration cycle (7) and a suction
line (6C) running to a compressor (2), includes a control means (11) for opening and
closing the electromagnetic valve (9) on the basis of a detected temperature in a
discharge temperature sensor (10) provided in a discharge line (6A) from the compressor
(2), and for varying a set temperature at which the electromagnetic valve (9) is closed
depending on the time since the last time the electromagnetic valve was opened or
closed.
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