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US 10,529,511 B1Granted
Variable venturi flow switch
AssigneeHydra-Electric Company
InventorJohn Chick Hong Tang
Life of this patent
Estimating the term…
Abstract
A flow switch including: a fluid inlet for receiving fluid in-line relative to a flow switch body; a poppet valve disposed in the fluid inlet and having a variable location relative to the flow switch body; an actuator pin affixed to the poppet valve; a helical spring disposed about the actuator pin, where the poppet valve is spring-loaded via the spring; and where the spring-loaded poppet valve is configured to move away from the fluid inlet with increasing volumetric fluid flow and towards the fluid inlet with decreasing volumetric fluid flow.
Claims19
A flow switch comprising:
- a fluid inlet for receiving fluid;
- a poppet valve disposed in the fluid inlet and having a variable location relative to a flow switch body;
- an adjustment screw, wherein rotation of the adjustment screw in a first direction increases spring rate on the poppet valve, and wherein rotation of the adjustment screw in a second opposite direction decreases spring rate on the poppet valve;
- wherein the poppet valve is configured to move away from the fluid inlet with increasing volumetric fluid flow and towards the fluid inlet with decreasing volumetric fluid flow.
1 more element
A flow switch comprising:
- a fluid inlet for receiving fluid;
- a poppet valve disposed in the fluid inlet and having a variable location relative to the flow switch body;
- an actuator pin affixed to the poppet valve;
- a helical spring disposed about the actuator pin, wherein the poppet valve is spring-loaded via the helical spring;
- and
- a disk spring, wherein a movement of the poppet valve away from the fluid inlet actuates a disk spring, and wherein the disk spring is calibrated to snap deflect at an upper pressure limit and a lower pressure limit;
- wherein the poppet valve is configured to move away from the fluid inlet with increasing volumetric fluid flow and towards the fluid inlet with decreasing volumetric fluid flow.
4 more elements
A method comprising:
- rotating an adjustment screw in a first direction to increase spring rate on a spring-loaded poppet valve, wherein the spring-loaded poppet valve is disposed in the fluid inlet and has a variable location relative to a flow switch body;
- and
- rotating the adjustment screw in a second opposite direction to decrease spring rate on the spring-loaded poppet valve;
- wherein the spring-loaded poppet valve is configured to move away from the fluid inlet with increasing volumetric fluid flow and towards the fluid inlet with decreasing volumetric fluid flow.
1 more element
Dependencies are inferred from the claim text.