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US 12,085,964 B2Granted
Smart pressure regulator for emergency evacuation inflation system
AssigneeGoodrich Corporation
InventorsPoly Puthur John, Ashish Kumar Agarwal, Petchi Subramanian
Life of this patent
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Abstract
A valve arrangement for a pressurized fluid source includes a regulating valve poppet configured to translate along a longitudinal axis of a valve housing, and a linear stepper motor configured to control a position of the regulating valve poppet. The linear stepper motor is controlled by a closed loop control system based upon temperature and pressure feedback signals to actively control the position and stroke rate of the regulating valve poppet.
Claims17
A valve arrangement for a pressurized fluid source, the valve arrangement comprising:
- a valve housing comprising an inlet, an outlet, and a main fluid channel extending along a longitudinal axis of the valve housing;
- a regulating valve poppet located in the main fluid channel, the regulating valve poppet configured to translate along the longitudinal axis of the valve housing;
- a linear stepper motor configured to control a position of the regulating valve poppet;
- a pressure sensor located between the regulating valve poppet and the outlet;
- a temperature sensor located between the regulating valve poppet and the outlet;
- and
- a controller,
- wherein the controller is configured to receive a pressure feedback signal from the pressure sensor, and to control the linear stepper motor based upon the pressure feedback signal to maintain a substantially constant output pressure of the pressurized fluid source,
- wherein the controller is configured to receive a temperature feedback signal from the temperature sensor, and to vary the feed rate of input DC voltage pulses to the linear stepper motor, and
- wherein the controller is configured to vary the feed rate of input DC voltage pulses to the linear stepper motor based on preset outlet pressure vs. time values and based on preset valve stroke vs. inflation time values.
7 more elements
A valve arrangement for a pressurized fluid source, the valve arrangement comprising:
- a valve housing comprising an inlet, an outlet, and a main fluid channel;
- a regulating valve poppet located in the main fluid channel, the regulating valve poppet configured to translate along a longitudinal axis;
- a linear stepper motor configured to control a position of the regulating valve poppet;
- a pressure sensor located between the regulating valve poppet and the outlet;
- a temperature sensor located between the regulating valve poppet and the outlet;
- and
- a controller, wherein the controller is configured to receive a pressure feedback signal from the pressure sensor, and to control the linear stepper motor based upon the pressure feedback signal to maintain a substantially constant output pressure of the pressurized fluid source,
- wherein the controller is configured to receive a temperature feedback signal from the temperature sensor, and to vary the feed rate of input DC voltage pulses to the linear stepper motor,
- wherein the outlet is fluidly disconnected from the inlet when the regulating valve poppet is in a closed position,
- the outlet is fluidly connected with the inlet when the regulating valve poppet is in an open position, and
- wherein the controller is configured to vary the feed rate of input DC voltage pulses to the linear stepper motor based on preset outlet pressure vs. time values and based on preset valve stroke vs. inflation time values.
8 more elements
An evacuation assembly, comprising:
- a pressurized fluid source;
- and
- a valve assembly configured to control a flow of pressurized fluid from the pressurized fluid source, the valve assembly comprising:
- a valve housing comprising an inlet, an outlet, and a main fluid channel extending along a longitudinal axis of the valve housing;
- a regulating valve poppet located in the main fluid channel, the regulating valve poppet configured to translate along the longitudinal axis of the valve housing;
- a linear stepper motor mounted to the valve housing and configured to control a position of the regulating valve poppet;
- and
- a pressure sensor located between the regulating valve poppet and the outlet;
- a temperature sensor located between the regulating valve poppet and the outlet;
- and
- a controller,
- wherein the controller is configured to receive a pressure feedback signal from the pressure sensor, and to control a position of the linear stepper motor based upon the pressure feedback signal to maintain a substantially constant output pressure of the pressurized fluid source,
- wherein an operating speed of the linear stepper motor is variable based upon a temperature feedback signal received from the temperature sensor, and
- wherein the controller is configured to vary the operating speed of the linear stepper motor based on preset outlet pressure vs. time values and based on preset valve stroke vs. inflation time values.
11 more elements
Dependencies are inferred from the claim text.