Two step metering solenoid for fluid dispenser
AssigneeEnginetics, LLC
InventorsThomas Huettner, Joseph Lull, Justin Warner
Life of this patent
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Abstract
A metering system for a fluid atomizer includes a housing, first and second metering members, and at least one solenoid. The housing includes a mixing chamber. The first metering member is operable to control flow of a first fluid to the mixing chamber. The second metering member is arranged coaxial with the first metering member and operable to control flow of a second fluid to the mixing chamber. The at least one solenoid is configured to operate at least one of the first and second metering members.
Claims22
A dual fluid delivery device, comprising:
- a housing having distal and proximal ends;
- a first metering device having distal and proximal ends and being axially movable between open and closed positions to control flow of a first fluid through a first valve opening;
- a second metering device arranged coaxially with and extending through the first metering device from the distal end to the proximal end of the first metering device, the second metering device being axially movable between open and closed positions to control flow of a second fluid through a second valve opening, the second valve opening positioned distal of the first valve opening in a direction toward the distal end of the housing.
A dual fluid delivery device, comprising:
- a housing having distal and proximal ends;
- a first metering device having distal and proximal ends and being axially movable by a solenoid between open and closed positions to control flow of a first fluid through a first valve opening;
- a second metering device arranged coaxially with and extending through the first metering device to deliver a second fluid from a location distal of the distal end of the first metering device, through the first metering device, and to a location proximal of the proximal end of the first metering device, the second metering device being axially movable between open and closed positions to control flow of a second fluid through a second valve opening, the second valve opening positioned distal of the first valve opening in a direction toward the distal end of the housing.
A method of controlling fluid flow, comprising:
- providing a housing and first and second metering members, the housing having distal and proximal ends and an outlet at the distal end, the second metering member being arranged coaxially with and extending through the first metering member from a proximal end to a distal end of the first metering member in a direction toward the distal end of the housing;
- moving the first metering member between a closed position and an open position to permit a first fluid to flow from a first valve seat into the mixing chamber;
- moving the second metering member from a closed position to an open position to permit a second fluid to flow from a second valve seat into the mixing chamber, an entirety of the second valve seat spaced distal of the first valve seat in a direction toward the distal end of the housing;
- moving the second metering member from the open position to the closed position to stop flow of the second fluid into the mixing chamber;
- moving the first metering member to the closed position to stop flow of the first fluid into the mixing chamber after the second metering member moves to the closed position.
Dependencies are inferred from the claim text.