| 摘要 |
<p>An evaporator defrost system in a refrigeration system including an insulated refrigeration cabinet, the defrost system comprising: an evaporator within the cabinet having a refrigeration mode for cooling air and a defrost mode, control means for controlling the flow of high pressure liquid refrigerant gas to an inlet side of said evaporator, means for circulation of air through the evaporator to a product storage space within the cabinet, means associated with the evaporator to control suction pressure to a compressor via an outlet line from the evaporator, sensing means to determine when a refrigeration temperature has reached a predetermined level, the defrost system including; means for maintaining at least partial refrigeration during a defrost cycle.</p> |
