JPS643091U

JPS643091U -

Info

Publication number: JPS643091U
Application number: JP9608987U
Authority: JP
Priority date: 1987-06-23
Filing date: 1987-06-23
Publication date: 1989-01-10

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す構成図、第２図
はその動作説明のためのフローチヤート図、第３
図は従来技術の一例を示す構成図である。１…圧縮機、２…電動機、３…入力管路、４，
７…流量制御弁、５…出力管路、６…リターン管
路、８…圧力センサー、９…流量センサー、１０
…圧力調節計、１２…竹量調節計、１３…電流セ
ンサー、１６…電流・電圧変換器、１７…演算制
御手段。 Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2 is a flowchart for explaining its operation, and Fig. 3 is a block diagram showing an embodiment of the present invention.
The figure is a configuration diagram showing an example of a conventional technique. 1...Compressor, 2...Electric motor, 3...Input pipe, 4,
7...Flow rate control valve, 5...Output pipe line, 6...Return pipe line, 8...Pressure sensor, 9...Flow rate sensor, 10
...pressure regulator, 12...bamboo amount regulator, 13...current sensor, 16...current/voltage converter, 17...arithmetic control means.

Claims

[Scope of utility model registration request]

a first pressure regulator means for operating an air flow rate control valve provided in an input pipe of the compressor using an operation output obtained by controlling and calculating a deviation between a measured discharge pressure value and a pressure set value of a compressor driven by an electric motor; When the load current of the motor reaches the limit value, the measured load current value and the limit value are set as the set value, and the deviation is controlled and calculated to operate the air flow rate control valve, and the measured load current value is set as the set value. A compressor discharge pressure control device comprising: second pressure regulator means having a function of decreasing the operating output over time until the operating output decreases by a certain amount below the limit value.