SOLENOID VALVE ASSEMBLY FOR CONTROLLING THE FLOW OF FLUID, PARTICULARLY FOR WASHING MACHINES
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United States of America Patent
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-
N/A
Issued Date -
Jul 12, 2012
app pub date -
Sep 7, 2010
filing date -
Sep 9, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A valve assembly including a valve body with inlet and outlet ports, between which there is a main valve seat cooperating with an associated main obturator. The obturator defines together with the valve body, a variable volume control chamber in permanent communication with the inlet port through a first passage having a reduced cross-section. The control chamber is adapted to be brought into communication with the outlet port through a second passage having a larger cross-section. Also provided is a solenoid pilot valve including a control coil and a movable core associated with an auxiliary obturator adapted to open and close the second passage. Between the second passage and the outlet port, is defined a second variable volume control chamber, which is delimited in part by the auxiliary obturator, and the movable core associated with the auxiliary obturator is mounted outside of the flow-path of the fluid.
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