| 摘要 |
<p>An automatic defrost system for a refrigerating device, comprising, in a cabinet (1), an evaporator (10) and a condenser (20), and a defrost air circuit (30) having: a first circuit portion (31); a second circuit portion (32) receiving a certain defrost airflow from the first circuit portion (31) and positioned adjacent to the condenser (20), in order to be heated by the latter; a third circuit portion (33), which is positioned adjacent to the evaporator (10), so as to selectively heat it when the heated defrost airflow passes through the second circuit portion (32) and to conduct said defrost airflow to the first circuit portion (31); and a valve means (40), which selectively permits the passage of the defrost airflow from the second circuit portion (32) to the third circuit portion (33).</p> |
