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.
Claims20
A flow switch comprising:
- 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, wherein the poppet valve is spring-loaded via the helical spring;
- and
- an adjustment screw, wherein rotation of the adjustment screw in a first direction relative to a bottom position of the flow switch increases spring rate on the poppet valve, and wherein rotation of the adjustment screw in a second opposite direction relative to the bottom position of the flow switch 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.
A flow switch comprising:
- 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;
- and
- a helical spring disposed about the actuator pin, wherein the poppet valve is spring-loaded via the helical spring;
- 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, and wherein the movement of the spring-loaded poppet valve away from the fluid inlet actuates a disk spring.
A flow switch comprising:
- 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;
- and
- a helical spring disposed about the actuator pin, wherein the poppet valve is spring-loaded via the helical spring;
- 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, wherein the poppet valve has a conical upper surface, wherein the poppet valve has a conical lower surface, and wherein the actuator pin is affixed to the upper surface of the poppet valve.
A flow switch comprising:
- 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, wherein the actuator pin is hollow;
- and
- a helical spring disposed about the actuator pin, wherein the poppet valve is spring-loaded via the helical spring;
- 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.
Dependencies are inferred from the claim text.