专利名称：PRESSURE FLOW CONTROL DEVICE 发明人：KUBO SETSUO
申请号：JP7268987
申请日：19870326
公开号：JPS63239385A
公开日：
19881005
专利内容由知识产权出版社提供
摘要：PURPOSE:To obtain a pressure flow control device having smaller occupying space in a machinery constitution using a single type of machines, when the discharge pres sure exceeds a t value, by generating an electric control signal corresponding to it, so that the rotating speed control of a fixed delivery pump can be carried out. CONSTITUTION:The discharge of a fixed delivery pump 2 is output into a main pipe line 8 via a check valve 11, and is supplied to a load. When a pressure detector 7 (a plurality of ttings are possible) detects that the discharge pressure in the main pipe line 8 has exceeded a t value, the output thereof is input into a control circuit 9. Therein, control signals such as tho for the on-off control of the fixed delivery pump 2 or for the multistage control of discharge quantity are output. By the output, via a converter 10, an electric motor 1 is driven variably in its rotating speed by a prescribed voltage or a frequency signal. Accordingly, by the on-off control of the fixed delivery pump 2 and the multistage control of discharge quantity, the difference between the output of the fixed delivery pump 2 and the load power is reduced to restrain the power less. Thus, the generation of heat is decread to reduce the deterio ration of oil, and the volume of each oil tank 3 can be significantly decread, so that the occupying space can be reduced.
申请人：TOKYO KEIKI CO LTD 更多信息请下载全文后查看
