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1877results about "Fluid pressure control using electric means" patented technology
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Vacuum evacuation system
ActiveUS20170200622A1Reduce installation costsIncrease pressureElectric discharge tubesFinal product manufactureProcess engineeringVacuum pump
The present invention relates to a vacuum evacuation system used to evacuate a processing gas from one or more process chambers for use in, for example, a semiconductor-device manufacturing apparatus. The vacuum evacuation system is a vacuum apparatus for evacuating a gas from a plurality of process chambers (1). The vacuum evacuation system includes a plurality of first vacuum pumps (5) coupled to the plurality of process chambers (1) respectively, a collecting pipe (7) coupled to the plurality of first vacuum pumps (5), and a second vacuum pump (8) coupled to the collecting pipe (7).
Owner:EBARA CORP
Tube occluder and method for occluding collapsible tubes
The present invention involves, in some embodiments, mechanisms and methods of occluding collapsible tubing with an occluder to prevent fluid flow therethrough. In some embodiments, a tube occluding mechanism is disclosed that includes a bendable occluding member for creating a force that can be applied to a collapsible tube to occlude the tube. In some embodiments, the collapsible tube can be an inlet / outlet tube on a removable pumping cartridge that is coupled to a reusable pump drive component when the system is in operation. In such embodiments, the occluding mechanism can be attached to the reusable component and can be used to block fluid flow to and from the pumping cartridge. In some embodiments, the occluding member can comprises a spring plate which can create a force to occlude tubing when in a relaxed, unbent configuration, and which can be bent to unocclude the tubing. In some preferred embodiments, in a default configuration of the tube occluder mechanism (when no external force is applied to the occluding member) the tubes are occluded, so that the tube occluder mechanism provides a fail-safe configuration preventing fluid flow to and from a pumping cartridge to which the tubes can be connected.
Owner:DEKA PROD LLP
Tube occluder for occluding collapsible tubes
Owner:DEKA PROD LLP
Method and apparatus to control hydraulic pressure in an electrically variable transmission
A method and apparatus to control an electrically variable transmission, by dynamically controlling system main hydraulic clutch pressures, based upon required clutch capacity, as determined by output load of the transmission. Included is a method to regulate hydraulic clutch pressure in an electrically variable transmission equipped with at least one clutch. This comprises monitoring magnitude of slippage of the clutches and controlling hydraulic boost pressure based upon the magnitude of clutch slippage. Controlling hydraulic boost pressure based upon the magnitude of clutch slippage comprises monitoring operator inputs, determining a requested operator torque command, and determining a required main boost pressure. The main boost pressure is based upon the requested operator torque command, the monitored operator inputs, parameters of the EVT and clutches. Commanded main boost pressure is then determined based upon the determined required main boost pressure.
Owner:GM GLOBAL TECH OPERATIONS LLC
Internal pressure controller of chamber and internal pressure subject -to- control type chamber
InactiveUS20060207595A1Precise flow controlContinuous controlBreathing protectionOperating means/releasing devices for valvesInternal pressureControl signal
A gas supply facility includes a plurality of pressure type flow controllers connected in parallel, and a first controller to control operation of the plurality of pressure type flow controllers so as to supply a desired gas exhausted by a vacuum pump to a chamber while controlling its flow rate, one of the pressure type flow controllers operates as a second controller to control the gas flow rate range up to 10% of the maximum flow rate supplied to the chamber, while the remaining pressure type flow controllers are made to be ones that control the rest of the gas flow rate range. Furthermore, pressure inside the chamber is controlled by installing a pressure detector in the chamber, inputting the value detected by the detector to the controller, and by adjusting a control signal to the pressure type flow controllers.
Owner:FUJIKIN INC +1
Pressure control system
ActiveUS20050279454A1Semiconductor/solid-state device manufacturingFluid pressure control using electric meansControl systemVacuum pump
A pressure control system allows gas to be evacuated out of a semiconductor process chamber at a substantially constant rate of mass flow. A gas line connects the process chamber to a vacuum pump. A controllable valve having a variable sized opening is positioned between the process chamber and the vacuum pump. A pressure sensor is in turn positioned between the valve and the vacuum pump, proximate the inlet to the vacuum pump. The size of the variable sized opening is regulated based upon the pressure in the gas line measured by the pressure sensor. The size of the valve opening is varied to maintain the pressure measured by the pressure sensor at a constant value. As a result, because the quantity of gas flowing through the gas line is proportional to the gas pressure, a substantially constant mass flow of gas out of the chamber and into the pump can be achieved.
Owner:ASM INTERNATIONAL
High pressure manifold, assembly, system and method
The present application is directed to a manifold system for low pressure and high pressure fluids. The manifold system may include one or more manifold sub-assemblies that may be assembled together, separated apart and replaced as desired. In oil and gas hydraulic fracturing operations, each manifold sub-assembly includes two or more low pressure fluid lines and two or more high pressure fluid lines for fluidly communicating with hydraulic fracturing pumps. High pressure fluid may exit the manifold system via a single line or multiple lines.
Owner:MGB OILFIELD SOLUTIONS LLC
Method and Apparatus for Pump Control Using Varying Equivalent System Characteristic Curve, AKA an Adaptive Control Curve
ActiveUS20120173027A1Reduce energy consumptionReduce operating costsFlow control using electric meansFluid pressure control using electric meansMoving averageAverage filter
The present invention provides, e.g., apparatus comprising at least one processor; at least one memory including computer program code; the at least one memory and computer program code being configured, with at least one processor, to cause the apparatus at least to: respond to signaling containing information about an instant pressure and a flow rate of fluid being pumped in a pumping system, and obtain an adaptive control curve based at least partly on the instant pressure and flow rate using an adaptive moving average filter. The adaptive moving average filter may be based at least partly on a system flow equation: SAMAt=AMAF(Qt / √{square root over (ΔPt)}), where the function AMAF is an adaptive moving average filter (AMAF), and the parameters Q and ΔP are a system flow rate and differential pressure respectively. The at least one memory and computer program code may be configured to, with the at least one processor, to cause the apparatus at least to obtain an optimal control pressure set point from the adaptive control curve with respect to an instant flow rate or a moving average flow rate as SPt=MA(Qt) / SAMAt, where the function MA is a moving average filter (MA), to obtain a desired pump speed through a PID control.
Owner:FLUID HANDLING
Down Pressure Adjustment Device And Method For Use With A Disc Opener Assembly Of An Agricultural Implement
A disc opener unit for an agricultural implement has a down pressure adjustment device that automatically adjusts the amount of down pressure applied on a furrowing disc based on strain measurements taken by a strain gauge or load cell. The strain gauge, which may be mounted to an arm that is used to set the position of a depth setting gauge wheel, provides feedback to a processor that in turn controls the amount of hydraulic fluid in a hydraulic cylinder to adjust the down force applied on the disc. The amount of down pressure is therefore adjusted in substantially real-time in response to changes in field conditions, which improves furrow depth consistency and reduces wear on the gauge wheel and its components.
Owner:CNH IND CANADA
Relative pressure control system and relative flow control system
ActiveUS7353841B2Accurate supervisionReduce the amount of controlOperating means/releasing devices for valvesControlling ratio of multiple fluid flowsRelative pressureSolenoid valve
Provided is a relative pressure control system has a simple configuration, but enables accurate regulation of a division ratio of an operation gas, and concurrently makes it possible to securely drain the operation gas from an operation gas pipeline in case of emergency. The system includes a plurality of air operated valves of a normally open type that are connected to an operation gas pipeline supplied with an operation gas; pressure sensors that are series connected to the respective air operated valves and that detect output pressures of the respective air operated valves; a controller that controls operation pressures of the respective air operated valves in accordance with the pressures detected by the pressure sensors; and a hard interlock solenoid valve that correlates the plurality of air operated valves to one another so that at least one of the plurality of air operated valves is normally opened. In the configuration, an opening of a specified one of the plurality of air operated valves is regulated, the operation gas is output at a predetermined division ratio.
Owner:CKD +1
Electromechanically-assisted regulator control assembly
InactiveUS7100628B1Operating means/releasing devices for valvesBreathing masksControl systemControl electronics
An electromechanically-assisted control system for use in a second-stage regulator. Regulator control assembly (20), also referred to as EMA assembly (20), includes a mechanical actuator sub-assembly (21) and an electromechanical actuator (EMA) sub-assembly (22) for controlling airflow through single air supply line (23). EMA sub-assembly (22) includes electronically controllable actuator (ECA) (34), which removably seals EMA orifice (36) in wall (30) of pilot chamber (32). ECA (34) is electrically connected with and controlled by control electronics (38). The control electronics include programmable microprocessor (40), which is electrically connected with charge and discharge electronics (42), both of which are electrically connected with power supply (44). Alternatively, regulator control assembly (20′), also referred to as all-electronic (AE) assembly (20′), has only an EMA sub-assembly and no mechanical actuator sub-assembly. AE assembly (20′) does not include a low-pressure diaphragm, a lever arm, a first valve, or a pilot jet orifice.
Owner:CREARE INC
Tactile Conforming Apparatus and Method for a Device
InactiveUS20090132093A1Earpiece/earphone attachmentsFluid pressure control using electric meansSkin textureBiomedical engineering
A device (100, 2604) includes a controllable skin texture surface (2602), a sensor (2700), and control logic (200). The sensor senses a plurality of points of interest (2804, 2806) of a user surface (2800). The control logic controls a plurality of portions (2900) of the controllable skin texture surface to protrude at locations with respect to the plurality of points of interest in response to the sensor sensing the plurality of points of interest. In one example, the control logic periodically adjusts the plurality of portions protruding from the controllable skin texture surface in response to movement between the user surface and the controllable skin texture surface.
Owner:GOOGLE TECH HLDG LLC
Method for controlling the operation of a compression system having a plurality of compressors
InactiveUS6233954B1Space heating and ventilation safety systemsSpace heating and ventilation control systemsCompressed fluidRanking
A fluid compression system includes a plurality of compressors, each compressor having a local controller for controlling operation thereof and a sensor for sensing the pressure of compressed fluid discharged therefrom. A method for controlling operation of the fluid compression system includes establishing a set point pressure threshold for loading and unloading each compressor, and assigning a ranking to each compressor for identifying a highest ranked compressor and a lowest ranked compressor, whereby the highest ranked compressor for the compression system initiates all commands for controlling all of the lower ranked compressors in the compression system. The method also includes commencing a loading subroutine including loading the highest ranked unloaded compressor, setting a load delay timer, sensing the pressure of the compressed fluid discharged from the highest ranked compressor, comparing the sensed discharge pressure of the highest ranked compressor to the set point pressure threshold established for the highest ranked compressor, and transmitting a load command from the controller of the highest ranked compressor to the controller of the next highest ranked unloaded compressor if the sensed discharge pressure of the highest ranked compressor remains less than or equal to the set point pressure threshold established for the highest ranked compressor, and the load delay timer equals zero. The loading subroutine is repeated until the discharge pressure of the highest ranked compressor is greater than the set point pressure threshold established therefor.
Owner:INGERSOLL RAND CO
Process control valve
InactiveUS20050016592A1Provide controlOperating means/releasing devices for valvesFlow control using electric meansClosed loop feedbackEngineering
A “plug and play” process control valve 10 providing closed loop feedback control has a built in microprocessor 40, stepper-motor 20, a position encoder, a valve body having an inlet 11 and an outlet 12, and pressure sensors 30, 31 positioned within the inlet 11 and the outlet 12 of the valve body, the pressure sensors being connected to the microprocessor 20, which is in turn connected to an input from the position encoder, and provided with outputs to the step-per-motor 40. Within the valve body there are a pair of apertured ceramic shear action discs 13, 14. The stepper-motor rotates the upper disc 14 relative to the apertured stator disc 13 to control pressure or flow in the pipeline.
Owner:JEROMSON PETER JAMES +1
Apparatus and method for controlling a rated system pressure
The rated system pressure in a pressure control system is adjusted through a pressure relief valve (2). In addition to the pressure relief valve (2), the system includes a check valve (4), a pressure sensor (3), a position switch (10), a first pressure adjustment member (13) for the relief valve, a second pressure adjustment member (12) for the check valve (4), an actuator (16), and a microcontroller (15) with a memory (6) and a display (7). Faults caused by pressure adjustment interactions are prevented by permitting an adjustment of the pressure relief valve only if the check valve is fully open and a pump provides pressure. For this purpose the actuator (16) of the check valve in its normal position prevents an adjustment of the pressure relief valve. Opening the check valve by the actuator permits adjusting the pressure relief valve (2) and the switch (10) operated through the actuator sends a signal to the microcontroller to drive the pump. When the check valve is opened, the pressure is equalized throughout the system, so that adjusting the response pressure of the pressure relief valve automatically adjusts the system pressure to a desired rated pressure.
Owner:A ROMHELD
Programmable tracking pressure regulator for control of higher pressures in microfluidic circuits
InactiveUS6662818B2Low costImprove precision controlValve arrangementsControlling ratio of multiple fluid flowsCapillary networkEngineering
Regulator for precision control of pressure based on a means of measuring pressure differentials. More specifically, the present invention provides a pressure control that tracks a relatively high background pressure, and applies a positive or negative offset to create the small pressure differentials that can be utilized to transport fluids within a capillary network. The present invention is also directed to a method of controlling microfluidic elements (such as donut cavities) with a high degree of precision. In high performance liquid chromatography applications, this is accomplished using tracking pressure regulators to measure and respond to the difference between the liquid pump pressure and the regulated pneumatic pressure.
Owner:PERSPECTIVE BIOSYST
Fluid monitoring and control system
ActiveUS20140230925A1Use of fluid can be goodQuick fixOperating means/releasing devices for valvesFlow control using electric meansFlow transducerControl system
A fluid monitoring and control system includes a central hub having a central processor, a user interface and an input / output port. A plurality of control devices communicate with the central hub. Each control device includes a fluid pipe section including a fluid inlet and a fluid outlet. A fluid valve is coupled in series within the fluid pipe section and an electric motor is mechanically connected to the fluid valve. A temperature sensor, pressure sensor and flow rate sensor are coupled to the fluid pipe section monitoring a temperature, pressure and flow rate of the fluid flow within the fluid pipe section. A control device processor is controllably connected to the electric motor, temperature sensor, pressure sensor and flow sensor. A control device input / output port is coupled to the control device processor, the control device input / output port in communication with the input / output port of the central hub.
Owner:FORTUNE BRANDS WATER INNOVATIONS LLC
Method for compensating for pressure differences across valves in cassette type IV pump
InactiveUS20050235733A1Precise deliveryTesting/calibration apparatusMedical devicesDifferential pressureFluid infusion
Owner:ICU MEDICAL INC
Methods for compensating for pressure differences across valves in IV pumps
InactiveUS20050238497A1Precise deliveryFlexible member pumpsMedical devicesDifferential pressureFluid infusion
A pump used to infuse a fluid into a patient is controlled in accordance with an algorithm that enables a microprocessor to monitor and adjust each pump cycle to compensate for a differential pressure between the pump's inlet and outlet. The algorithm defines a fluid delivery protocol that is applied in controlling the operation of the pump to achieve a desired rate, volume, and timing of the fluid infusion. Fluid is delivered by the pump when a plunger compresses an elastomeric membrane overlying a fluid chamber. Due to the small volume of the chamber, an incremental change in the plunger position before the delivery stroke produces a significant change in the delivery pressure. At the beginning of a pump cycle, the microprocessor determines the differential pressure between the inlet and outlet of the pump, and adjusts the plunger position before the delivery stroke to compensate for the differential pressure. A retraction of the plunger from the home position decreases the delivery pressure of the fluid, and an advancement of the plunger increases it. After the position of the plunger is adjusted to compensate for the differential pressure, the pump cycle proceeds. Following the plunger stroke, the outlet pressure is used to determine the actual volume of fluid delivered. The duration of the plunger stroke in the next pump cycle is adjusted to compensate for any volume delivery error produced by the differential pressure compensation.
Owner:ICU MEDICAL INC
Speed change pressure flow field control method applicable to intermittent transonic speed wind tunnel
InactiveCN103123504ARealize the requirements of variable speed pressure flow field controlQuick test effectAerodynamic testingFluid pressure control using electric meansAviationEngineering
The invention provides a speed change pressure flow field control method applicable to an intermittent transonic speed wind tunnel, and relates to the technical field of aerospace industry wind tunnel tests. The speed change pressure flow field control method applicable to the intermittent transonic speed wind tunnel solves the problem that a traditional flow field control method can not meet the requirements of flutter tests. The technical scheme includes: enabling total pressure and main ejector pressure to rise to first stage set value in a given rate after a wind tunnel starts ramming; controlling a mach number to reach set target value in a flow field regulating procedure; controlling a main pressure regulating valve and a main air discharge valve so as to enable the total pressure of the wind tunnel and the main ejector pressure to reach respective target value in a change total pressure regulating procedure; and controlling the current main ejector pressure to gradually drop to set shutdown main ejector pressure and controlling the current wind tunnel total pressure to gradually drop to set wind tunnel total pressure value when the wind tunnel is shut down. The speed change pressure flow field control method applicable to the intermittent transonic speed wind tunnel can meet the requirements of the flutter tests for intermittent transonic speed wind tunnel flow field control, has rapid, accurate and reliable test effects, and furthermore is high in total pressure control and mach number control accuracy.
Owner:INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
Water management system
InactiveUS8606413B2Detection of leakageLevel controlGeneral water supply conservationWater management systemWater flow
A method of managing and conserving water at a point of use, by installing a control panel and at least one electrically operated valve in a plumbing line, which valve can monitor at least pressure and flow rate, and allow the calculation of the total volume of flow in a particular line. The valve being controlled by a controller programmed to prevent water loss by monitoring the pressure and flow rate in a particular line to detect and prevent water consumption outside controlled parameters by shutting off the valve if the system detects an uncontrolled flow, such as faucet being left on, or a leaky toilet cistern, or the water flow in a zone exceeding a predetermined quota.
Owner:PICTON DAVID JOHN
Electric pressure cooker and control method for electric pressure cooker
ActiveCN103799847APrevent overflowAvoid unfamiliarityFluid pressure control using electric meansPressure-cookersThermodynamicsPressure control
The invention provides a control method for an electric pressure cooker. The electric pressure cooker is provided with a heater and a pressure valve. The control method comprises the boiling point detection step of detecting the boiling point temperature Kf inside the electric pressure cooker and determining the pressure control pressure and the active exhaust pressure of the electric pressure cooker according to the boiling point temperature Kf, and the cooking step of detecting the steaming temperature inside the electric pressure cooker and controlling heating of the heater and opening and closing of the pressure valve according to the steaming temperature, the pressure control pressure and the active exhaust pressure. According to the control method for the electric pressure cooker, due to the facts that the boiling point temperature inside the electric pressure cooker is detected before cooking, and the pressure control pressure and the active exhaust pressure of the electric pressure cooker are adjusted according to the boiling point temperature, the control method for the electric pressure cooker has the advantages that food is prevented from overflowing when the food is cooked in a high altitude area, and the food is prevented from being undercooked when the food is cooked in a negative altitude area. The invention further provides the electric pressure cooker.
Owner:MIDEA GRP CO LTD
Method for compensating for pressure differences across valves in cassette type IV pump
InactiveUS7402154B2Precise deliveryMedical devicesPressure infusionDifferential pressureFluid infusion
Owner:ICU MEDICAL INC
Method for controlling a compressed air installation comprising several compressors, control box applied thereby and compressed air installation applying this method
ActiveUS7955056B2Easy to adjustFlexible member pumpsWorking fluid for enginesGas compressorEngineering
Method for adjusting a compressed air installation using several electrically driven compressors of what is called the “loaded / unloaded” type and / or the turbo compressor type and / or the compressor type with variable rotational speed, wherein these compressors are each connected to a single compressed air network with their outlets, and wherein use is made of a control box which makes it possible to adjust the pressure in the compressed air network around a target pressure to be set. The adjustment takes place by controlling the flow of one or several of the compressors, in particular in order to increase the overall flow supplied by the compressors when the pressure drops too much, and in order to lower the overall supplied flow when the pressure becomes too high.
Owner:ATLAS COPCO AIRPOWER NV
System, program product, and related methods for performing automated real-time reservoir pressure estimation enabling optimized injection and production strategies
ActiveUS20090276100A1Understand reservoir performanceMonitor performanceSurveyFlow control using electric meansStorage managementPressure data
Systems, program product, and methods for providing real-time reservoir management of one or more reservoirs across one or more fields are provided. A system can include multiple monitoring wells and at least one injection well in communication with a central facility including a reservoir management computer or server positioned to provide real-time reservoir management of the one or more reservoirs. The computer can include, stored in memory, reservoir management program code, which when executed, can cause the computer to perform the operations of calibrating an injection well model for each of one or more injection wells positioned in a reservoir responsive to real-time injection rate and wellhead pressure data associated therewith, calculating static reservoir pressure for each of the injection wells responsive to the respective calibrated injection well model and responsive to respective surface injection rate and wellhead pressure data, and generating real-time automated isobaric pressure maps.
Owner:SAUDI ARABIAN OIL CO
Ozone dispensing system
An ozone dispensing system comprising an ozone gas generating means, electrical means to control the concentration of ozone produced by said ozone gas generating means, means to control the concentration of ozone in a preset dispensed volume, an oxygen supply and venting means disposed between said ozone gas generating means and said dispensing of said ozone, said venting means for continuous venting of said ozone.
Owner:DUNDER OVE KARL
Apparatus for treating a respiratory disorder with a power source connection
ActiveUS20150120067A1Improve efficacyImprove manufacturabilityCircuit monitoring/indicationSequential battery dischargeElectricityDisease
A respiratory device, such as a ventilator, for use in treating respiratory disorders and for preventing respiratory disorders. The respiratory device is configured to be powered from a range of different power sources including an internal battery, an external battery, AC power source or a DC power source. The device may be electrically connectable to a plurality of external batteries in a series and the power from each external battery is used sequentially along the series. A controller of the respiratory device is configured to detect the connection of the different power sources and control use of the different power sources using a power priority scheme. The controller may determine an estimate of the total available battery capacity from all the electrically connected batteries and display the total battery capacity on a user interface display of the device.
Owner:RESMED PARIS
Methods and apparatus for maintaining a pressure within an environmentally controlled chamber
InactiveUS6916397B2Pressurized chemical processLiquid surface applicatorsVacuum pumpPressure measurement
In a first aspect, a system includes (1) a chamber; (2) a variable speed vacuum pump coupled to the chamber; and (3) a pressure controller coupled to the chamber. The pressure controller compares a set point pressure with a pressure measurement for the chamber and adjusts a flow of gas through the pressure controller based on a difference between the pressure measurement and the set point pressure. The system includes a pressure measurement device coupled to the chamber and to the pressure controller, and a main controller coupled to the variable speed vacuum pump, the pressure controller and the pressure measurement device. The pressure measurement device measures a pressure within the chamber and provides a pressure measurement to the pressure controller and the main controller. The main controller (1) adjusts a speed of the variable speed vacuum pump; and (2) provides the set point pressure to the pressure controller.
Owner:APPLIED MATERIALS INC
Fluid control system
ActiveUS20140116538A1Fast flowOperating means/releasing devices for valvesFlow control using electric meansFluid controlControl system
At a time when control of a flow rate adjusting valve is initiated from a fully closed state in order to make a measured flow rate equal to a target flow rate, an initial value of a driving signal is set as a parameter by making use of at least one of the type, pressure, and temperature of a fluid.
Owner:HORIBA STEC CO LTD
Return Fan Control System and Method
ActiveUS20100057258A1Sampled-variable control systemsMechanical apparatusControl systemSystem pressure
A return fan control system for an HVAC system comprises a supply fan control loop, a return fan control loop and a building pressure control system. The supply fan control loop comprises a duct pressure controller arranged to control a supply fan to a duct pressure setpoint. The return plenum pressure control loop comprises a return plenum pressure controller arranged to automatically control a return fan to a return plenum pressure setpoint determined by a setpoint reset function. The building pressure control system is operable to control a building pressure. The building pressure control system may comprise a building pressure control loop and an outside air control loop cooperatively arranged to control an exhaust damper in response to an outside air intake.
Owner:TRANE INT INC
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