Patents in subclass Pumps/By Control Of Electric Or Magnetic Drive Motor
Parent class: Pumps
| Number | Patent title | Issue Date |
|---|---|---|
| 07408310 | Apparatus for controlling driving of reciprocating compressor and method thereof Disclosed are an apparatus for controlling a driving of a reciprocating compressor capable of enhancing an efficiency by differently controlling a frequency and a stroke voltage according to a load size and capable of reducing consumption... |
08/05/2008 |
| 07405529 | System and method for controlling linear compressor A system for controlling a linear compressor, generates freezing force as a piston reciprocates according to rotation of a motor which receives alternating current power through a triac. The system includes a controller which moves up or... |
07/29/2008 |
| 07402977 | Apparatus and method for controlling operation of reciprocating motor compressor An apparatus for controlling an operation of a reciprocating motor compressor includes a current integrator for integrating an alternating current applied to a motor of the compressor during each one cycle thereof; and a controller for... |
07/22/2008 |
| 07387500 | Hydro elastic pump which pumps using non-rotary bladeless and valveless operations A pump formed from an asymmetric tube, which is pinched to form asymmetric forces, that pump fluid. |
06/17/2008 |
| 07388463 | Electromagnetic coil assembly employing spool-spindle An electromagnetic coil assembly comprising a spool-spindle and a case. The spool-spindle comprises a spindle portion and a larger included portion. The spindle portion has a conductor wound thereon. The larger included portion has... |
06/17/2008 |
| 07385368 | Apparatus for controlling operation of reciprocating compressor An apparatus for controlling an operation of a reciprocating compressor includes a inductance increasing device connected to a motor of the reciprocating compressor, so that a surge current generated when power is applied to the... |
06/10/2008 |
| 07369920 | Pressure control system with optimized performance A pressure control system for controlling pressure of a fluid in a chamber includes a pressure sensor configured to measure the pressure of the fluid in the chamber, and a valve configured to control the pressure of the fluid in the... |
05/06/2008 |
| 07341432 | Apparatus and method for controlling operation of reciprocating compressor An apparatus and a method for controlling operation of a reciprocating compressor is capable of reducing a stroke estimation error by eliminating an error that occurs due to resistance and inductance of a compressor motor by estimating a... |
03/11/2008 |
| 07335001 | Apparatus and method for controlling operation of a reciprocating compressor An apparatus and a method for controlling an operation of a reciprocating compressor can improve efficiency of a compressor by reconciling an operation frequency with a mechanical resonant frequency. The apparatus includes a mechanical... |
02/26/2008 |
| 07326038 | Pressure switch mechanism and air compressor using the same mechanism An air compressor comprises a tank portion for reserving a compressed air, a compressed air generating portion for generating the compressed air to be supplied to the tank portion, a motor for driving the compressed air generating... |
02/05/2008 |
| 07323845 | Apparatus for controlling operation of compressor and method therefore Provided is an apparatus for controlling an operation of a compressor which can always apply a constant voltage to the compressor without noise and a method therefor. The apparatus for controlling the operation of the compressor includes:... |
01/29/2008 |
| 07316542 | Fluid level control system A control system governs fluid level in a well system including a pump positioned downhole for pumping fluid upward through a tubular, a rod positioned within the tubular for driving the pump, a prime mover, and a pumpjack to transmit... |
01/08/2008 |
| 07314349 | Fluid level control system for progressive cavity pump A control system controls a progressive cavity pump driven by a rod. The rod is powered by a prime mover, such as a variable speed drive. A proximity sensor outputs signals responsive to rotational positioning of the rod. A controller... |
01/01/2008 |
| 07314350 | Energy store circuit for controlling rotor rotation A fan controller for controlling the rotation of a rotor (with a fan blade) has a current limiting element to control current flow to a capacitive storage apparatus. More specifically, the fan controller has an input for receiving an... |
01/01/2008 |
| 07300257 | Prevention of unpowered reverse rotation in compressors The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the... |
11/27/2007 |
| 07290989 | Compressor protection and diagnostic system A compressor assembly includes a shell, a compressor housed within the shell, and a motor drivingly connected to the compressor. In addition, a sensor assembly is provided for monitoring operating parameters of the compressor assembly.... |
11/06/2007 |
| 07281903 | Device for varying the pressure of the fluid delivered by a jet washer Device for varying the delivery pressure of a jet washer comprising a positive-displacement pump operated by a single-phase electric motor powered by alternating current and having a delivery nozzle of predetermined cross-section, and... |
10/16/2007 |
| 07271563 | Apparatus for controlling operation of reciprocating compressor, and method therefor The present invention discloses an apparatus for controlling an operation of a reciprocating compressor and a method therefor which can reduce errors in an operation of a stroke estimated value of the reciprocating compressor, by... |
09/18/2007 |
| 07244106 | Process and device for flow control of an electrical motor fan A method and configuration from maintaining a constant of air to a protective helmet (4) from a fan (3) in a battery powered fresh air unit. The fan (3) is a radial fan with a filter (5) positioned on the suction side of the fan and is... |
07/17/2007 |
| 07222493 | Compressor diagnostic system A system and method for diagnosing and protecting a compressor includes a sensor, logic circuitry, a motor protector and an intelligent device. The logic circuitry is associated with the sensor and the motor protector and operable to... |
05/29/2007 |
| 07218511 | Electrical enclosure system An electrical enclosure system for effectively containing a pump control and alarm system within a single protective structure and providing convenient access to the electrical components within. The electrical enclosure system includes a... |
05/15/2007 |
| 07207183 | System and method for capacity control in a multiple compressor chiller system A capacity control algorithm for a multiple compressor liquid chiller system is provided wherein the speed and number of compressors in operation are controlled in order to obtain a leaving liquid temperature setpoint. In response to an... |
04/24/2007 |
| 07168924 | Rod pump control system including parameter estimator A rod pump control system includes a parameter estimator that determines from motor data parameters relating to operation of the rod pump and/or downhole dynamometer card without the need for external instrumentation, such as down hole... |
01/30/2007 |
| 07168925 | Automatic optimizing pump and sensor system A reciprocating electromagnetic pump comprising a coil wound about a bipolar or tripolar core, a diaphragm structure mechanically coupled to at least one arm with a magnet attached to one end of the arm and a controller electronically... |
01/30/2007 |
| 07163380 | Control of fluid flow in the processing of an object with a fluid An apparatus for and methods of control of a fluid flow. In a system for supercritical processing of an object, the apparatus includes a measuring device for measuring a pump performance parameter and a controller for adjusting a fluid... |
01/16/2007 |
| 07156873 | Methods for detecting an abnormal condition of a blood pump system The present invention provides methods for detecting an abnormal condition of a blood pump system based on the power consumption of the pump actuator. By plotting differentiated power consumption of the pump actuator over time against the... |
01/02/2007 |
| 07128538 | Centrifugal fluid pump apparatus A centrifugal fluid pump apparatus includes a control mechanism including an emergency impeller rotation function. The emergency impeller rotation function includes a rotation termination function when the failure detection function... |
10/31/2006 |
| 07121808 | High frequency air pulse generator An improved air pulse generator produces high frequency chest wall oscillations (HFCWO) and includes means for internal heat dissipation. Internal heat generated by an internal diaphragm motor is dissipated by having a portion of the air... |
10/17/2006 |
| 07122026 | Implantable infusion device with optimized peristaltic pump motor drive A medical device known as an implantable therapeutic substance delivery device is configured for implanting in humans to deliver a therapeutic substance such as pharmaceutical compositions, genetic materials, and biologics to treat a... |
10/17/2006 |
| 07118347 | Method for activating an electric motor and a metering pump by supplying predetermined pulse intervals to supply predetermined fluid quantities The methods serves for activating an electric motor of a metering pump with which the fluid quantity (V.sub.nom) to be delivered is set by an external impulse trigger, wherein a predetermined delivery quantity (V.sub.nom) is allocated to... |
10/10/2006 |
| 07096681 | System and method for variable speed operation of a screw compressor A system and method are provided for variable speed operation of a screw compressor to obtain increased capacity and efficiency. The screw compressor is connected to an induction motor driven by a variable speed drive, wherein the screw... |
08/29/2006 |
| 07090469 | Turbomolecular pump A turbomolecular pump (10) comprises a stator (12, 18), a pump rotor (20) a motor (28) for driving the pump rotor and a control device (42). The control device (42) controls the motor output power such that the motor output power does not... |
08/15/2006 |
| 07083392 | Pump and pump control circuit apparatus and method A method and apparatus for a pump and a pump control system. The apparatus includes pistons integrally formed in a diaphragm and coupled to the diaphragm by convolutes. The convolutes have a bottom surface angled with respect to a top... |
08/01/2006 |
| 07080508 | Torque controlled pump protection with mechanical loss compensation A method and apparatus are provided for controlling the operation of a pump, such as a centrifugal pump, featuring steps of either adjusting the operation of the pump, or issues a warning to a user of the pump of an undesirable operating... |
07/25/2006 |
| 07048511 | Device for prevention of backward operation of scroll compressors A method and apparatus which provides a pressure sensor and/or temperature sensor connected to the low pressure side of a refrigeration system, or the discharge line of a scroll compressor. When the scroll compressor rotates backward, the... |
05/23/2006 |
| 07037081 | High pressure reciprocating pump and control of the same Pumping requirements for chromatograph applications are for constant flow at high and variable pressures and for accurate programmable control of liquid composition. A two-cylinder pump, pumping system, and associated controls provide an... |
05/02/2006 |
| 07029239 | Piecewise linear control of the duty cycle of a pulse width modulated signal A system may include a PWM generator and control logic. The PWM generator is configured to generate a PWM signal having a duty cycle dependent on a duty cycle value generated by the control logic. The control logic is configured to... |
04/18/2006 |
| 07025571 | Apparatus and method for controlling a reciprocating compressor Disclosed is an apparatus and method for controlling a reciprocating compressor capable of inexpensively and exactly controlling a position of a piston in a cylinder, by which a top clearance is minimized according to the information of a... |
04/11/2006 |
| 07023167 | Control arrangement for an induction motor compressor having at least three windings, a torque-augmentation circuit a starting capacitor and a resistive element Apparatus for driving a three-phase compressor assembly from a single-phase electrical power supply having first and second power lines, said three-phase compressor assembly comprising a compressor having a rotatable shaft, an electrical... |
04/04/2006 |
| 07001158 | Digital fluid pump Digital fluid pumps having first and second electromagnetic actuators formed in part by a piston to alternately drive the piston in opposite directions for pumping purposes. The piston motion is intentionally limited so that the... |
02/21/2006 |
| 07001154 | Apparatus for controlling a linear compressor and preventing the collision of a piston with a valve in the compressor Disclosed herein is an apparatus and method for controlling a linear compressor. The linear compressor control apparatus has a collision detection unit, a control unit, and a compressor driving unit. The collision detection unit detects a... |
02/21/2006 |
| 06997686 | Motor driven two-stage centrifugal air-conditioning compressor A two-stage compressor for generating necessary pressure differential for air-conditioning applications with air-cooled, water-cooled and evaporative-cooled condensing systems using low-pressure refrigerant, such as R134a, is provided. A... |
02/14/2006 |
| 06997684 | Fan motor with digital controller for applying substantially constant driving current The invention relates to a fan arrangement comprising a radial or diagonal fan (370) with which a direct current motor (32) is associated as drive motor, further comprising a digital control element (23, 24) such as a microcontroller or... |
02/14/2006 |
| 06997683 | High pressure reciprocating pump and control of the same Pumping for chromatograph applications calls for constant flow at high pressures and for accurate control of liquid composition. A two-cylinder pump, and associated controls provide an accurate, fixed flow rate. During the initial portion... |
02/14/2006 |
| 06986646 | Electronic trim for a variable delivery pump in a hydraulic system for an engine Electronically controlled variable delivery pumps produce output based upon a control signal generated by an electronic control module. The electronic control module includes programming that acknowledges that each pump may have... |
01/17/2006 |
| 06974052 | Dosing device adapted for dispensing a concentrate from a holder in a metered manner The invent related to a dosing device comprising a housing comprising at least one inlet, at least one outlet. The dosing device is adapted for dispensing in a metered manner a viscous concentrate from a holder. The concentrate in diluted... |
12/13/2005 |
| 06966759 | Compressor diagnostic and recording system A compressor diagnostic system incorporates a control which receives a plurality of data streams about various operational features of the compressor. As an example, both temperature and pressure of the suction and discharge refrigerant... |
11/22/2005 |
| 06966967 | Variable speed pump control A method and apparatus for monitoring operating characteristics and/or control signals of a system comprising a variable speed vacuum pump. Operating characteristics and/or control signals of the system may be monitored, and the pumping... |
11/22/2005 |
| 06964558 | Compressor utilizing low volt power tapped from high volt power Low voltage electrical power is supplied to a diagnostic control device in a sealed compressor. Electrical power is tapped from a high voltage power line and transformed to low voltage power that in turn operates the diagnostic control... |
11/15/2005 |
| 06960893 | Driving apparatus of a linear motor A driving apparatus of a linear motor which reciprocally drives a movable element supported by an elastic member, includes an inverter that converts a direct current power into an alternating-current power with a specified frequency to... |
11/01/2005 |