Title:
WATER LEVEL CONTROLLER
Document Type and Number:
Japanese Patent JPH01183710
Kind Code:
A
Abstract:
PURPOSE:To obtain a compact water level controller having high accuracy and high reliability by connecting serially between an electrical open/close valve that works via a water level sensor and a switch that works via a float put in a water tank. CONSTITUTION:The drop of the water level is detected by a level sensor 5 and an open/close valve 3 is energized at a fixed water level via a control circuit 4. Then the water is supplied to a water tank 1 via a supply pipe 2. The energization of the valve 3 is discontinued and the valve 3 is closed at a prescribed water level. Thus the supply of water is cut. If the circuit 4 does not close the valve 3 even at a prescribed water level owing to a trouble of the sensor 5, a switch means 8 is driven by a float 6. Thus the energization of the valve 3 is cut and the valve 3 is closed. In such a constitution, the structure of a water level controller is simplified with no use of a ball tap mechanism. Thus the accuracy and the reliability of an electrical system are improved for the water level controller.
Inventors:
HANADA YOSHIYUKI
MATSUYAMA KOICHI
KOBATA YUKIO
OE TOSHIHARU
MATSUYAMA KOICHI
KOBATA YUKIO
OE TOSHIHARU
Application Number:
JP647588A
Publication Date:
July 21, 1989
Filing Date:
January 14, 1988
Export Citation:
Assignee:
KAWASAKI STEEL CO
TOTO LTD
TOTO LTD
International Classes:
G05D9/12; (IPC1-7): G05D9/12
Attorney, Agent or Firm:
Yoichiro Shimoda (3 outside)