Magnetically-actuated fluid control valve

摘要: This disclosure provides a valve which is controlled by magnetic actuator. More specifically, the actuator polarized, actuator, that is, containing both permanent magnet and an electromagnet. The can be inexpensive commercial relay having pivoting armature pushes compliant diaphragm against seat to close valve. Preferably, configured as “see-saw,” such opened, opposing end of see-saw also displaces diaphragm. In this manner, fluid pressure in chamber relatively constant, there are no significant pressures prevent from opening closing. preferred application actively drive printer ink supply, selectively drawn using remote supply into local reservoir, mounted near print head. A sensor at reservoir used detect air or low pressure, causes open draw more reservoir.