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US 3,997,107 AGranted
Servo modulating regulating control system
AssigneeRaypak, Inc.
InventorsLeo Block, Larry J. Ashton
Life of this patent
Estimating the term…
Abstract
A servo valve control system exemplified by way of temperature controlled gas valves. Multiple slave pressure regulating valves are utilized supplying multiple burner manifolds. The first valve of the group of valves is modulated in response to temperature. The outlet pressure of each valve is utilized to bias and thereby modulate the next pressure regulating valve. The first valve, preferably is also controlled in response to an outdoor temperature sensor.
Claims13
In a fluid flow regulating system such as a system for supplying gas to a gas burner, in combination:
- burner means, flow control means including a condition responsive modulating valve controlling a primary flow of gas to the burner means;
- additional flow control means comprising a pressure regulator controlling a second parallel flow to the burner means, and means connecting the discharge pressure from the modulating valve to the regulator to provide a biasing influence whereby said pressure regulator is modulated in response to said pressure thereby acting as a slave to the modulating valve.
Dependencies are inferred from the claim text.