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US20140294601 |
ACTIVE ADAPTIVE HYDRAULIC RIPPLE CANCELLATION ALGORITHM AND SYSTEM
Hydraulic pumps/motors are used to convert between rotational motion/power and fluid motion/power. Pressure differential is achieved across the pump/motor by applying torque to either aid or... |
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US20150204322 |
PUMP SYSTEM HAVING SPEED-BASED CONTROL
A pump system is disclosed. The pump system may have a power source, a pump, and a torque converter configured to fluidly couple an output rotation of the power source to an input rotation of the... |
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US20120156056 |
PUMP UNITS
A pump unit includes a pump, a motor configured to drive the pump, a control device communicating with the motor and a pressure detection device configured to detect a pressure of a fluid... |
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US20110052416 |
Variable Speed Pumping System and Method
A variable speed pumping system and an associated method for moving water of an aquatic application. The variable speed pumping system includes a water pump for moving water in connection with... |
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US20130330205 |
VARIABLE FLUID FLOW TECHNIQUES FOR MACHINE FLUID SYSTEMS
Methods, systems, and techniques for structuring, operating, and/or controlling a variable fluid flow system of a machine are provided. In various embodiments, a supplemental pump and/or an... |
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US20150219104 |
METHOD OF DETERMINING CIRCULATION STATE OF COOLING WATER
A method of determining a state of cooling water is provided. The method includes operating, by a controller, a driving motor of a cooling water-circulating pump that is configured to circulate... |
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US20050180856 |
Drive technology for peristaltic and rotary pumps
A method and system for controlling a rotary pump where a rotary pump can be coupled to a stepper motor, and the stepper motor can be controlled with micro- or nano-stepping accuracy using a... |
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US20080134701 |
Variable Compressor Oil Return
A method includes operating a variable-speed compressor in a refrigeration system carrying a refrigerant-oil mixture at a varying compressor speed to provide cooling capacity in proportion to... |
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US20150184575 |
Control Methods and Systems for Dual Mode Cooling Pump
Methods and systems for controlling the operation of a dual mode engine accessory, such as a dual mode cooling pump. The dual mode device has two modes of operation, an electric motor operation... |
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US20150147188 |
High Volume Low Speed Fan Using Direct Drive Transverse Flux Motor
Disclosed is a high volume low speed (HVLS) fan that is designed to circulate air in large buildings for cooling, heating, and ventilation. A fan with a diameter between 8 to 24 feet consisting of... |
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US20170089627 |
CHILLER
A chiller is provided that may include a plurality of compressors, a plurality of drives to drive the plurality of compressors, an input having a plurality of switches, to which IDs that... |
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US20150078917 |
SYSTEM AND METHOD FOR CONVERTERLESS OPERATION OF MOTOR-DRIVEN PUMPS
A converterless motor-driven pump system includes an off-grid prime mover. The off-grid prime mover has a rotational driveshaft and operates in response to a throttle control command to control a... |
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US20160146091 |
APPARATUS AND METHOD FOR CONTROLLING COOLING FAN OF VEHICLE
An apparatus and method for controlling a cooling fan of a vehicle are provided. The apparatus includes an information detector that is configured to detect information for operating the cooling... |
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US20100034665 |
CONTROL SYSTEM FOR A PUMP
The present invention relates to pumps comprising variable frequency drive means and methods for operating such pumps. The inventive method for operating a pump (1) comprises the steps of... |
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US20090129941 |
METHOD FOR CONTROLLING A PUMP ARRANGEMENT, AND PUMP ARRANGEMENT
A method for controlling a pump arrangement comprising a fluid delivering pump having a pump drive, a bypass line having a bypass valve for routing fluid back from an outlet side of the pump to a... |
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US20080240930 |
Method and System for Optimizing Downhole Fluid Production
A method and system for pumping unit with an elastic rod system is applied to maximize fluid production. The maximum stroke of the pump and the shortest cycle time are calculated based on all... |
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US20140227104 |
HYDRAULIC DRIVE SYSTEM FOR ELECTRICALLY-OPERATED HYDRAULIC WORK MACHINE
An electrically-operated hydraulic work machine drives an actuator with a hydraulic pump driven by an electric motor and exercises load sensing control by controlling the rotation speed of the... |
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US20170102000 |
MOTOR DRIVE DEVICE CAPABLE OF INFORMING MALFUNCTION IN OPERATION OF FAN, AND METHOD THEREOF
A motor drive device can improve the accuracy of detection of malfunction in a fan. The motor drive device includes a fan, a fan controller for controlling the fan, a rotation speed detecting part... |
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US20060152995 |
Apparatus for delivering and recirculating liquid compositions
An apparatus and a method are provided for continuously pumping liquid coloring composition to a destination without interruption in flow. This allows all loads delivered to multiple mixing... |
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US20050095140 |
Rod saver speed control method and apparatus
A motor speed controller (100) identifies the position of a pump rod (14). At one or more critical positions of the rod, the motor speed controller (100) adjusts the speed of the motor to change... |
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US20060099084 |
Electric blower
The present invention provides an electric blower that performs: measuring an amount of airflow against a fan rotation speed of the blower with a load magnitude detected previously; determining an... |
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US20150044061 |
AVOIDANCE OF CONTINUOUS OPERATION IN FREQUENCY CONVERTER-STIMULATED TORSION RESONANCES OF A COMPRESSOR TRAIN
A method for controlling a rotational speed of a compressor train that can be driven at an adjustable rotational speed using a drive unit, a corresponding arrangement and a compressor train with a... |
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US20050084384 |
Smart fan and pump controller
A pump or DC fan used to cool an electronic system is monitored for speed. When the pump or fan encounters an unexpected increase in impedance, such as an obstruction or a bearing anomaly, the... |
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US20120055484 |
Ventilator
A ventilator which includes: at least one pair of reciprocating opposed gas moving means, the internal volume of which is arranged to be reduced and enlarged by a balanced drive, said gas moving... |
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US20050180857 |
Fluid circulation pump for heating and conditioning systems and the like
The present invention relates to a method for measuring a parameter characteristic of a heating and/or conditioning system (1) equipped with a primary hydraulic circuit (6) and a secondary... |
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US20150211537 |
Pump System with Automated Testing
A pump system is provided. The pump system includes a power source, a pump and a transmission. A first sensor is configured to provide information indicative of at least one first operating... |
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US20140334941 |
PUMP APPARATUS
Provided is a pump apparatus capable of improving the performance in a wide operation range from an operation area with a low pressure and a high flow rate to an operation area with a high... |
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US20140072449 |
FAN CONTROL SYSTEM
A fan control system for a fan on a motherboard includes an I/O controller installed on the motherboard and a control circuit electrically connected to the I/O controller. The fan includes a motor... |
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US20120070312 |
CONTROLLED HYDRAULIC SYSTEMS
There is herein described a controlled hydraulic systems for operating machinery. More particularly, there is described a controlled hydraulic system (200) comprising a variable drive ratio device... |
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US20060067837 |
Vehicle air conditioner in which shaft seal is protected
An object of the present invention is to protect a shaft seal of a variable displacement compressor of an air conditioner for a vehicle by the control thereof. The air conditioner for a vehicle... |
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US20060099094 |
Vacuum pumping arrangement and method of operating same
A vacuum pumping arrangement (10) for controlling pressure in a chamber, the arrangement comprising a molecular pumping mechanism (12) and a backing pumping mechanism (14). The backing pumping... |
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US20170136845 |
BUS AIR-CONDITIONING ARRANGEMENT, AND METHOD FOR PRODUCING SAME
A bus air-conditioning arrangement with a compressor for compressing refrigerant, wherein the compressor has an electric motor and a compression device, which is driven by the electric motor, for... |
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US20130017097 |
ALARM CIRCUIT
An alarm circuit includes a fan controller with a rotation speed control pin and a rotation speed detection pin, a first rectifying circuit connected to the rotation speed control pin, a switch... |
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US20070237649 |
Device and Method for Preventing Foreign Matters from Adhering in Dishwasher
Device and method for preventing foreign matters from adhering in a dishwasher, the device including a circulating pump including a washing motor for providing a driving source to pump up washing... |