病毒单词专利名称：Rever fan heat pump defrost control system
发明人：David N. Shaw
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申请号：US05/917040
申请日：19780619洗手间标语
公开号：US04178767A
文科二本公开日：分数混合运算题>怎么面试应聘人员
19791218荷兰风景
专利内容由知识产权出版社提供
摘要：A defrost control system includes in an electrical control circuit, a number of relay coils and contacts responsive thereto for insuring a delay in termination of the defrost mode and rever refrigerant flow to the outdoor coil of the heat pump system to delay coil operation as an evaporator, and to effect automatically fan motor reversal and energization to blow air downwardly over the outdoor coil fins to assist gravity in removing the condensate during delay in initiation of heat pump heating cycle, thereby preventing refreezing of condensate on the coil fins.
申请人：DUNHAM BUSH INC
代理机构：Sughrue, Rothwell, Mion, Zinn and Macpeak星盘解读
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