PRESSURE CONTROL DEVICE FOR REDUCING WASTE OF ELECTRIC POWER BY CONTROLLING ELECTRICALLY DEFORMATION OF EACH VARIABLE MEMBER

摘要

PURPOSE: A pressure control device is provided to make the device small and to remove a negative effect of EMI(Electromagnetic Interference) in the pressure control device. CONSTITUTION: A pressure control device for controlling pressure in a container(140) receiving gas and having an exhaust port(150) for discharging the gas is composed of an electrical control device(110) for outputting voltage; a deformable member(120) coupled to the electrical control device and correspondent-deformed by the voltage; and a regulating member(130) disposed at the opposite side of the exhaust port on the deformable member. The deformation makes the regulating member generate displacement. The exhaust port is opened and closed according to the displacement of the regulating member to control the pressure in the container. The deformable member is a laminated piezoelectric sheet.