FIVE WAY REVERSING VALVE FOR REVERSIBLE REFRIGERAT

专利名称：FIVE WAY REVERSING VALVE FOR
REVERSIBLE REFRIGERATION CYCLE 发明人：AOKI TADASHI
申请号：JP23579090
申请日：19900907
公开号：JPH04116359A
公开日：
19920416
专利内容由知识产权出版社提供
摘要：PURPOSE:To simplify structure and stabilize defrosting operation in heating operation by switching over a five way reversible valve in specific structure with a pilot three way solenoid valve. CONSTITUTION:When a pilot three way valve V2 is not energized, a five way reversible valve V1 allows high pressure from high pressure lines 16, 17, and 18 to be supplied to pressure conversion chamber R2 and R3 where a piston 12 moves in the direction of a pressure chamber R1 and inhibits the movement of a piston 19 to the high pressure chamber R1 by way of coupling materials 21 and 23, and produces cooling operation mode where a defrosting valve 22 is closed. When power is supplied to the pilot solenoid valve V2, low pressure is supplied to the pressure conversion chambers R2 and R3 from a low pressure pipeline 27 where the piston 12 moves in the direction of a plug body 3 while a valve disk 19 is thrust to a valve seat 13a and produces heating operation mode where the defrosting valve 22 is close. When the pilot solenoid valve V2 fails to receive power under heating operation, the pressure conversion chamber R3 is subjected to higher pressure, keeping the pressure chamber R2 at low pressure, and the piston 19 moves so that the defrosting valve 22 may open a defrosting pipeline and thereby continues heating operation.
申请人：SAGINOMIYA SEISAKUSHO INC 更多信息请下载全文后查看。