SOLENOID VALVE

PROBLEM TO BE SOLVED: To improve responsiveness and stabilize a control characteristic even when operation is started with air accumulated in fluid by reliving the air to a fluid receiving part for receiving fluid on a plunger side provided between a through hole of a center post and a rod. SOLUTION...

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Bibliographic Details
Main Author HIGA EIJI
Format Patent
LanguageEnglish
Published 28.04.2000
Edition7
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To improve responsiveness and stabilize a control characteristic even when operation is started with air accumulated in fluid by reliving the air to a fluid receiving part for receiving fluid on a plunger side provided between a through hole of a center post and a rod. SOLUTION: When current flows through a coil 2 and an excited condition is accomplished, a plunger 3 is attracted towad a center post 4 so as to be shifted, while a spool is also moved via a rod 5, so that a flow passage between an input port and a control port is communicated (opened) while a drain port is closed. In this case, a volume of an area R2 serving as a fluid receiving part is sufficiently larger then that of a fluid storable area R1, so that the air can be relieved to the area R2. Therefore, the plunger 3 can be prevented continuously working when air is left in the fluid storable area R1, and responsiveness in a starting time can be improved while generation of a damping phenomenon is prevented for stabilizing control.
Bibliography:Application Number: JP19980307912