| 摘要 |
<p>A refrigerating machine for a chamber (5, fig 3) has a tube evaporator 2 and a fan-blown evaporator 3 includes a reservoir 13, a heat exchanger 14, and a defroster 4 including a door-opening relay 421, a high/low pressure switch 43, a compressor electromagnetic switch, a delay relay 45, a set timer 46, a defrosting timer 47, and a defrosting resetting temperature switch 40. Evaporator 3 is used when the door is open to freeze moisture in hot air entering the chamber 5, since it has a drain 35; evaporator 2 is used when the door is shut. After a predetermined period with the door shut evaporator 3 is used while a defrosting fluid is passed through evaporator 2.</p> |
