Fluid control system
First Claim
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1. A fluid control system comprising:
- valve means for movement between the open and closed positions;
valve actuation means, connected to said valve means, for manual actuation to a first open or closed position, and triggerable actuation to a second closed or open position, respectively;
a flow rate sensor in series with said valve means for producing an output indicative of flow rate through the valve, all fluid flowing through the valve means flowing through the flow rate sensor, the flow rate sensor comprising a housing having an inlet and an outlet communicating with a central chamber in the housing, a flow cylinder located in the central chamber and forming a flow plenum between the central chamber walls and the flow cylinder, the flow plenum in communicating with the housing outlet, the flow cylinder having a central bore connecting a cylinder inlet with the cylinder outlet, the housing inlet connected to the cylinder inlet, the flow cylinder having a plurality of apertures in its cylindrical wall communicating with the central bore and the flow plenum, a displacement piston positioned within the central bore of the flow cylinder for longitudinal displacement within the central bore, a means for biasing the displacement piston to the cylinder inlet, the piston sealing off the apertures in the cylindrical wall when displaced to the cylinder inlet, the apertures being open when the piston is displaced towards the cylinder outlet, a fluid flowing into the housing inlet flows through the cylinder inlet into the central bore where it displaces the piston towards the cylinder outlet to open the apertures to permit the fluid to flow through the apertures into the flow plenum and out to the housing outlet, the displacement of the piston against the biasing means being proportional to the fluid flow through the flow rate sensor, a means for generating a magnetic field in the piston, and a sensor means responsive to the magnetic field adjacent said housing and proximate said piston for sensing the displacement of the piston and producing an output signal indicative of the fluid flow through the flow rate sensor; and
microprocessor means, connected to said flow rate sensor and said valve actuation means, said microprocessor means adapted for receiving programmed information and for receiving said output signal and computing a flow volume through the valve means, comparing the flow volume to said programmed information and triggering said valve actuation means when the conditions imposed by said programmed information are met.
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Abstract
The fluid control device of the present invention combines a flow sensing unit in series with a control valve. The flow sensing unit is of the displacement piston type and the flow rate is electronically sensed. A single action poppet valve assembly facilitates the use of a self contained power supply for use in remote locations. A microprocessor monitors parameters including pressure, flow rate, temperature and flow volume, and is enable to activate the control valve to the open or shut positions based upon any combination of the monitored parameters.
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Citations
31 Claims
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1. A fluid control system comprising:
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valve means for movement between the open and closed positions; valve actuation means, connected to said valve means, for manual actuation to a first open or closed position, and triggerable actuation to a second closed or open position, respectively; a flow rate sensor in series with said valve means for producing an output indicative of flow rate through the valve, all fluid flowing through the valve means flowing through the flow rate sensor, the flow rate sensor comprising a housing having an inlet and an outlet communicating with a central chamber in the housing, a flow cylinder located in the central chamber and forming a flow plenum between the central chamber walls and the flow cylinder, the flow plenum in communicating with the housing outlet, the flow cylinder having a central bore connecting a cylinder inlet with the cylinder outlet, the housing inlet connected to the cylinder inlet, the flow cylinder having a plurality of apertures in its cylindrical wall communicating with the central bore and the flow plenum, a displacement piston positioned within the central bore of the flow cylinder for longitudinal displacement within the central bore, a means for biasing the displacement piston to the cylinder inlet, the piston sealing off the apertures in the cylindrical wall when displaced to the cylinder inlet, the apertures being open when the piston is displaced towards the cylinder outlet, a fluid flowing into the housing inlet flows through the cylinder inlet into the central bore where it displaces the piston towards the cylinder outlet to open the apertures to permit the fluid to flow through the apertures into the flow plenum and out to the housing outlet, the displacement of the piston against the biasing means being proportional to the fluid flow through the flow rate sensor, a means for generating a magnetic field in the piston, and a sensor means responsive to the magnetic field adjacent said housing and proximate said piston for sensing the displacement of the piston and producing an output signal indicative of the fluid flow through the flow rate sensor; and microprocessor means, connected to said flow rate sensor and said valve actuation means, said microprocessor means adapted for receiving programmed information and for receiving said output signal and computing a flow volume through the valve means, comparing the flow volume to said programmed information and triggering said valve actuation means when the conditions imposed by said programmed information are met. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31)
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13. A fluid control system comprising:
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valve means for movement between the open and closed positions; valve actuation means, connected to said valve means, for manual actuation to a first open or closed position, and triggerable actuation to a second closed or open position, respectively; a flow rate sensor in series with said valve means for producing an output indicative of flow rate through the valve, all fluid flowing through the valve means flowing through the flow rate sensor, the flow rate sensor comprising a housing having an inlet and an outlet communicating with a central chamber in the housing. A flow cylinder located in the central chamber and forming a flow plenum between the central chamber walls and the flow cylinder, the flow plenum in communication with the housing outlet, the flow cylinder having a central bore connecting a cylinder inlet with the cylinder outlet, the housing inlet connected to the cylinder inlet, the flow cylinder having a plurality of apertures in its cylindrical wall communicating with the central bore and the flow plenum, a displacement piston positioned within the central bore of the flow cylinder for longitudinal displacement within the central bore, a means for biasing the displacement piston to the cylinder inlet, the piston sealing off the apertures in the cylindrical wall when displaced to the cylinder inlet, the apertures being open when the piston is displaced towards the cylinder outlet, a fluid flowing into the housing inlet flows through the cylinder inlet into the central bore where it displaces the piston towards the cylinder outlet to open the apertures to permit the fluid to flow through the apertures into the flow plenum and out to the housing outlet, the displacement of the piston against the biasing means being proportional to the fluid flow through the flow rate sensor, a means for generating a magnetic field in the piston, and a sensor means responsive to the magnetic field adjacent said housing and proximate said piston for sensing the displacement of the piston and producing an output signal indicative of the fluid flow through the flow rate sensor; microprocessor means, connected to said flow rate sensor and valve actuation means, said microprocessor means adapted for receiving programmed information and adapted for receiving transmitted physical condition parameter information and comparing the transmitted physical condition parameter to said programmed information, and triggering said valve actuation means when the conditions imposed by said programmed information are met; and sensing means, connected to said microprocessor means for sensing a physical condition parameter and transmitting physical condition parameter information to said microprocessor means. - View Dependent Claims (14, 15, 16, 17, 18)
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25. A flow sensor producing an output indicative of the fluid flow rate through the sensor, the flow rate sensor comprising:
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a housing having an inlet and outlet communicating with a central chamber in the housing; a flow cylinder located in the central chamber of the housing and forming a flow plenum between the central chamber walls and the flow cylinder, the flow plenum in communication with the housing outlet, the flow cylinder having a central bore connecting a cylinder inlet and a cylinder outlet, the housing inlet connected to the cylinder inlet, the flow cylinder having a plurality of apertures in its cylindrical wall communicating with the central bore and the flow plenum; a displacement piston positioned within the central bore of the flow cylinder for longitudinal displacement within the central bore; a means for biasing the displacement piston to the cylinder outlet, the piston sealing off the apertures in the cylindrical wall when displaced to the cylinder inlet, the apertures being open when the piston is displaced towards the cylinder outlet, a fluid flowing through the housing into the housing inlet, flowing through the cylinder inlet into the central bore where it displaces the piston towards the cylinder outlet opening the apertures and permitting fluid to flow through the apertures into the flow plenum and out of the housing outlet, the displacement of the piston against the biasing means being proportional to the fluid flow rate through the flow rate sensor; a means for generating a magnetic field from the piston; and a sensor means responsive to the magnetic field adjacent said housing and proximate said piston for sensing the displacement of the piston and producing an output signal indicative of the fluid flow through the flow rate sensor.
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Specification