Fluid handling – Systems – Multi-way valve unit
Patent
1999-04-23
2000-08-29
Fox, John
Fluid handling
Systems
Multi-way valve unit
251 86, F16K 11044
Patent
active
061093025
ABSTRACT:
A three way valve for selectively controlling a flow of gas between one passage and at least one of two additional passages includes a valve assembly having a body including a lower chamber communicating with first and second oppositely disposed controlled ports having first and second opposed valve seats aligned on an axis. A third inlet/outlet port also communicates with the lower chamber. A valve member in the body includes a shaft that is reciprocably movable on the axis and carries at least one head with first and second axially spaced seat engaging surfaces that are, respectively, alternately engagable with the valve seats for closing their respective ports. A biasing spring urges the valve member in a first direction for closing the first port and opening the second port. An actuator includes an armature that operatively engages the shaft for moving the valve member in a second direction for opening the first port and closing the second port. A floating bearing, located at one side of the body, supports the valve member shaft and the valve head or heads in overhung fashion. The actuator is detached from the shaft so that alignment of the valve seat engaging surfaces with their respective seats is not affected by engagement of the shaft with the actuator. The valve head or heads may be fixed or swively mounted on the shaft for positive seating on their seats.
REFERENCES:
patent: 3511260 (1970-05-01), Benjamin
patent: 4074700 (1978-02-01), Engle
patent: 4460015 (1984-07-01), Burt et al.
patent: 5676345 (1997-10-01), Zurke et al.
Delphi Technologies Inc.
Fox John
VanOphem John A.
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