专利名称：DEFROSTING METHOD FOR AIR CONDITIONER三年级数学
正能量二字网名
发明人：KURODA MIKIHIKO,MANNEN
TATSUO,HOSHINO TETSUYA
申请号：JP22678088
中国古代童话故事申请日：19880909汉光武帝>海边日落
公开号：JPH0275867A
企业内控管理制度
公开日：
电影金鸡奖>今天是圣诞节吗
19900315
专利内容由知识产权出版社提供
摘要：PURPOSE:To prevent equalizing sound from generating at the time of retting of room heating by opening a motor-driven expansion valve at the time of retting from a defrosting to room heating, then opening a switching valve 4, and then closing a defrosting switching valve 19. CONSTITUTION:A switching valve 4 is opened during a room heating operation, and a defrosting switching valve 19 is clod. When a defrost signal is output in this state, the frequency of an inverter is reduced to a predetermined value. Then, a bypass switching valve 19 is opened, and the valve 4 is clod. Thereafter, a first motor-driven expansion valve 10 and a cond motor-driven expansion valve 16 are quentially clod. After the operations are completed, the frequency of the inverter is raid to start defrosting. When a defrost complete signal is output, the valves 10, 16 are fully opened, and the frequency of the inverter is then again reduced to a predetermined value. Thus, high pressure out of a room is operated inside the room, and the pressure inside the room is raid. After it becomes this state, the valve 4 is opened, and the valve 19 is then opened. Thus, refrigerant is circulated in a room heating cycle.
申请人：DAIKIN IND LTD
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