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US 8,527,099 B2Granted
Pneumatic control device and system
AssigneeCypress Envirosystems, Inc.
InventorsRameshbabu R. Songukrishnasamy, Daniel Ginn, Harry Sim
Life of this patent
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Abstract
A control device may include at least a first electromechanical setpoint controller having a prime mover that applies a setpoint force in response to at least a controller signal, and a controller circuit that generates at least the controller signal in response to setpoint control data. A pneumatic controller may have at least one gas flow inlet and a flow regulator that varies a gas flow property in response to the setpoint force.
Claims17
A control device, comprising:
- an electromechanical setpoint controller having a prime mover that applies a setpoint force in response to a controller signal, and a controller circuit that generates the controller signal in response to setpoint control data;
- and
- a pneumatic controller having at least one gas flow inlet and a flow regulator that varies a gas flow property in response to the setpoint force,
- wherein the control device is a pneumatic thermostat, and the pneumatic controller further includes a temperature dependent displacer mechanically coupled to the setpoint force that provides a mechanical output to the flow regulator, the mechanical output varying in response to an ambient temperature;
- wherein the temperature dependent displacer is a bimetallic strip.
2 more elements
A system, comprising:
- a control device comprising a pneumatic section that varies a gas flow in response to a mechanical control input, and an electromechanical supervisory section that applies the mechanical control input to the pneumatic section in response to setpoint data;
- and
- a master device, coupled to the control device by a communication path, that provides the setpoint data to the control device,
- wherein the control device is a pneumatic thermostat, and the pneumatic section further includes a temperature dependent displacer that provides a mechanical output to a flow regulator, the mechanical output varying in response to an ambient temperature;
- wherein the temperature dependent displacer is a bimetallic strip.
2 more elements
Dependencies are inferred from the claim text.