Fluid flow regulator with restrictor pin
AssigneeEmerson Electric Co.
InventorsThomas P. Buescher, Timothy E. Reitz
Life of this patent
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Abstract
A fluid flow regulator having a chamber comprising a port opening and a tapered pin disposed within the opening, for controllably restricting the cross-sectional flow area through the port. The tapered pin moves relative to the bore of the port that it is disposed in, under the influence of a pressure responsive diaphragm. A spring biases the pin towards the diaphragm. The diaphragm's movement is unaffected by any misalignment of the diaphragm with respect to the tapered pin and port, and the tapered pin's movement is unaffected by any diaphragm movement not in line with the port.
Claims9
An adjustable fluid flow regulator having a regulator chamber comprising:
- a first port in communication with a pressure signal;
- a second port, through which the cross-sectional flow area is controllably restricted;
- a tapered pin disposed within the second port, for controllably restricting the cross-sectional flow area through the second port;
- a diaphragm, which moves in response to changes in pressure, for controllably displacing the tapered pin relative to the pressure signal;
- and
- a spring for biasing the tapered pin towards the diaphragm.
An adjustable fluid flow regulator in combination with a gas valve, the regulator comprising:
- a first port in communication with a pressure signal;
- a second port, through which the cross-sectional flow area is controllably restricted;
- a tapered pin disposed within the second port, for controllably restricting the cross-sectional flow area through the second port;
- a diaphragm, which moves in response to changes in pressure, for controllably displacing the tapered pin relative to the pressure signal;
- and
- a spring for biasing the tapered pin towards the diaphragm.
Dependencies are inferred from the claim text.