| 摘要 |
<p>An apparatus for detecting refrigerant leak in a refrigerating apparatus using refrigerant and a heat pump type refrigerating apparatus at low cost is presented. A refrigerant leak is judged from the differential temperature and the running time, by comprising a refrigeration system including a compressor (1), an evaporator (4), an expansion device (3), and a condenser (2), being sequentially coupled annularly by a conduit, a first temperature detector (20) for detecting the air temperature of suction port of the evaporator, a second temperature detector (21) for detecting the refrigerant temperature at the middle part of the evaporator (4), a differential temperature detector (11) for calculating the differential temperature of the detectors (20,21), and a running time detector (12) for storing the cumulative running time of the compressor (1).</p> |
