Solenoid valve
First Claim
1. A flow control valve comprising:
- a housing having an inlet, an outlet and a valve seat in a flow path between the inlet and the outlet;
a valve member movable in a first direction towards the valve seat to a position of engagement with a stop, and in a second direction away from the valve seat towards a stationary core, the valve member having an opening in an end of the valve member;
a valve element slidably received within the opening in the valve member, the valve element being configured to sealingly engage the valve seat;
a spring for biasing the valve member towards a first position where fluid flows through the valve seat to the outlet, in which position the valve element is in engagement with the valve seat, and the valve member is in a position of engagement with the stop that prevents the valve member from impacting against the valve element in engagement with the valve seat; and
a solenoid that, when energized, causes the valve member to move towards a second position where fluid flows through the valve seat to the outlet, in which position the valve element is spaced apart from the valve seat.
5 Assignments
0 Petitions
Accused Products
Abstract
A valve is provided that includes a housing having an inlet, an outlet, and a valve seat therebetween. The valve includes a valve member movable towards the valve seat towards engagement with a stop, and away from the valve seat when the solenoid is energized. The valve member has an opening in which a valve element is received. A spring urges the valve member and valve element towards the valve seat, and a solenoid moves the valve member away from the valve seat. The spring biases the valve member to a closed position, in which the valve element engages the valve seat, and the valve member engages a stop that prevents the valve member from impacting against the valve element that is seated against the valve seat. The solenoid when energized causes the valve member to move upward and pull the valve element away from the valve seat.
44 Citations
20 Claims
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1. A flow control valve comprising:
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a housing having an inlet, an outlet and a valve seat in a flow path between the inlet and the outlet; a valve member movable in a first direction towards the valve seat to a position of engagement with a stop, and in a second direction away from the valve seat towards a stationary core, the valve member having an opening in an end of the valve member; a valve element slidably received within the opening in the valve member, the valve element being configured to sealingly engage the valve seat; a spring for biasing the valve member towards a first position where fluid flows through the valve seat to the outlet, in which position the valve element is in engagement with the valve seat, and the valve member is in a position of engagement with the stop that prevents the valve member from impacting against the valve element in engagement with the valve seat; and a solenoid that, when energized, causes the valve member to move towards a second position where fluid flows through the valve seat to the outlet, in which position the valve element is spaced apart from the valve seat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 19)
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8. A flow control device comprising:
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a housing having an inlet, an outlet and a valve seat in a flow path between the inlet and the outlet; a valve member slidably disposed within the housing approximate the valve seat, having an opening in a first end facing the valve seat, and a passage extending through a portion of the valve member through which fluid may flow, the valve member being configured to move towards the valve seat to a position of engagement with a first stop, and away from the valve seat to a position of engagement with a second stop; a valve element having an end portion slidably received within the opening in the valve member, the valve element being biased to establish a spacing between the valve element and the valve member; a spring that provides a biasing force for biasing the valve member towards a first position, in which position the valve element is in sealing engagement with the valve seat, and the valve member is in a position of engagement with the first stop, which first stop prevents the valve member from impacting against the valve element in engagement with the valve seat; and a solenoid that, when energized, provides a force for overcoming the spring'"'"'s biasing force and urging the valve member towards the second position, in which position the valve element is spaced apart from the valve seat and the valve member is moved into a position of engagement with the second stop, wherein fluid flow is permitted from the inlet through the valve seat to the outlet when the valve member is in the first position, and fluid flow through the valve is not permitted from the inlet through the valve seat to the outlet when the valve member is in the second position. - View Dependent Claims (9, 10, 11, 12, 13, 20)
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14. A flow control valve comprising:
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a housing having an inlet, an outlet and a valve seat in a flow path between the inlet and the outlet; a valve member having an end including a chamber opening therein, in which a valve element is slidably disposed, said valve member being slidable within the valve for reciprocally moving between a first position in which the valve element sealingly engages the valve seat to restrict fluid flow to the outlet, and a second position in which the valve element is spaced apart from the valve seat to permit fluid flow to the outlet; a spring that provides a force for urging the valve member towards the first position, to move the valve element to engage the valve seat and the valve member into engagement with a stop, which stop prevents the valve member from impacting against the valve element in engagement with the valve seat; and a solenoid that, when activated, provides a force for urging the valve member towards the second position towards a stationary core, to move the valve member to engage and move the valve element away from the valve seat to an open position. - View Dependent Claims (15, 16, 17, 18)
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Specification