Class / Patent application number | Description | Number of patent applications / Date published |
417012000 | Having timer or delay means | 52 |
20080310966 | Scroll type booster - An electromagnetic valve at an intake side is provided between an intake port of a compressor body and a pneumatic line at an intermediate position of an intake pipe. The electromagnetic valve is opened/closed by the control unit. When the valve is opened, a communication of the intake port of the compressor body and the pneumatic line is allowed. When the valve is closed, the communication between the intake port and the pneumatic line is blocked. Under a start-up control of the compressor body, the electromagnetic valve at the intake side is opened to communicate the pneumatic line in the plant with the intake port of the compressor body for power supply to an electric motor to drive an orbiting scroll. The rattle of the orbiting scroll by an amount equal to the axial gap (play) is suppressed before starting a compression operation. | 12-18-2008 |
20090053071 | SYSTEM AND METHOD FOR REDUCING AIR BUBBLES IN A FLUID DELIVERY LINE - A method and pump that accurately senses air in a fluid delivery line pulses or activates and deactivates the air sensor(s) multiple times during the pumping phase of the fluid delivery cycle and can generate alarms based upon a single indication or a cumulative indication of air in the line. The pump can include multiple air sensors spaced along the delivery line so that the method can use the multiple signals therefrom to distinguish real moving air bubbles from false positives and/or air bubbles adhered to the inner wall of the line. | 02-26-2009 |
20090097984 | OPERATION CONTROL DEVICE FOR VACUUM PUMP AND METHOD FOR STOPPING OPERATION THEREOF - To provide an operation control device for a vacuum pump and a method for stopping the operation of the vacuum pump that make it possible to effectively remove products, resulting from solidification and liquefaction of gas in a casing and possibly hindering the rotation of a pump rotor, so that the vacuum pump may be started normally. An operation control device | 04-16-2009 |
20090214356 | Pump control valve - A pump control valve for use between a motor driven pump and a fluid storage and supply tank. The pump control valve is operative to control the run time of the pump by controlling the fluid supplied to the tank between a maximum of fluid supplied to a minimum of fluid supplied during the time period in which the tank pressure is brought to the desired limit. | 08-27-2009 |
20090311107 | METHOD, SYSTEM, AND APPARATUS FOR OPERATING A SUCKER ROD PUMP - Apparatus, methods, and system for wireless remote monitoring and controlling a sucker rod pump for producing hydrocarbons, providing self-adjusting methods for operation over a wide-range of operating conditions according to algorithms that automatically compensate for offset and amplitude drift in sensor data, automatically identify pump off conditions, and automatically optimize hold down time. | 12-17-2009 |
20100028165 | OIL-FLOODED SCREW COMPRESSOR, MOTOR DRIVE SYSTEM, AND MOTOR CONTROL DEVICE - When an oil-flooded screw compressor is started up in a cold environment after a long halt, start-up torque increases due to the increased viscosity of the oil that has long stayed inside the working chambers of the compressor. This has necessitated drive means with a larger capacity than that required for normal operation. | 02-04-2010 |
20100092306 | COMPRESSOR REVERSE ROTATION OF VARIABLE DURATION ON START-UP - In a method of operating a compressor at startup, the compressor is rotated in reverse for a brief period of time. The compressor is of a type that does not compress liquid when rotated in reverse. The purpose is to boil off the liquid refrigerant from the oil by heating and agitating the mixture of oil and refrigerant in the oil sump. This results in a much more benign forward start as less refrigerant is drawn into the compressor pump and the amount of oil pumped out of the compressor on start up is minimized. Also, the viscosity of oil is increased and lubrication of the bearings is improved. After a short period of time reverse rotation is stopped and the compressor can start rotating in the forward direction. The short period of time of reverse rotation is varied based upon system conditions. In one embodiment, the variation can occur by reducing the reverse run time as ambient temperature increases. In another embodiment, electrical conditions such as incoming voltage and/or a ratio of voltage to frequency can be utilized to change the reverse run time. | 04-15-2010 |
20100135823 | SEWAGE PUMPING - A method of flushing a wet well operating under a constant level pumping regime in a sewage system in which the wet well level is monitored and controlled along with the pump operation in response to a predicted period of reduced inflow. The method operates such that in advance of the predicted period of reduced inflow, the wet well level is allowed to rise to a flush level and during the predicted period of reduced inflow, the wet well level is reduced from the flush level to a normal level. Independent claims are included to a control unit, a pumping station and a sewage system, which are respectively operable under the claimed method. | 06-03-2010 |
20100178175 | Start-Up Control Device and Method for Electric Scroll Compressor - A device executing a start-up control method for an electric scroll compressor has a thermistor ( | 07-15-2010 |
20100209259 | EVACUATION APPARATUS - The present invention relates to an evacuation apparatus for evacuating a vacuum chamber of a substrate processing apparatus for processing a substrate such as a semiconductor wafer or liquid crystal panel. An evacuation apparatus according to the present invention includes a first vacuum pump connected to a vacuum chamber, and a second vacuum pump connected to the first vacuum pump. The first vacuum pump has a pair of multistage pump rotors. | 08-19-2010 |
20100232981 | CONTROLLER FOR A MOTOR AND A METHOD OF CONTROLLING THE MOTOR - A method of controlling a motor operating a pumping apparatus of a system includes determining a trip value for a parameter, floating the trip value, and monitoring the operation of the pump. Monitoring the operation of the pump includes determining a value for the parameter, comparing the value to the trip value, and determining whether the comparison indicates a condition of the pump. The method of controlling the motor also includes controlling the motor to operate the pump based on the condition of the pump. | 09-16-2010 |
20100247331 | SET OF PISTON COMPRESSORS AND METHOD FOR OIL COMPENSATION - A set of piston compressors ( | 09-30-2010 |
20100310382 | Method of Controlling a Pump and Motor - Embodiments of the invention provide a variable frequency drive system and a method of controlling a pump driven by a motor with the pump in fluid communication with a fluid system. The drive system and method can provide one or more of the following: a sleep mode, pipe break detection, a line fill mode, an automatic start mode, dry run protection, an electromagnetic interference filter compatible with a ground fault circuit interrupter, two-wire and three-wire and three-phase motor compatibility, a simple start-up process, automatic password protection, a pump out mode, digital input/output terminals, and removable input and output power terminal blocks. | 12-09-2010 |
20110020138 | Clutch Control System and Method for Operating a Clutch Control System - A system includes a compressor, a control unite and a clutch assigned to the compressor. The control unit is suitable for opening and closing the clutch in order to economize energy. The control unit is suitable for carrying out a monitoring routine during which the clutch is opened or closed in order to prevent the clutch, the compressor and the components arranged downstream of the compressor from being damaged. A method for controlling the system, including the compressor, the control unit and the clutch associated with the compressor, is also provided. | 01-27-2011 |
20110123352 | ELECTRIC PUMP WITH TIME SETTING AND ENHANCED OIL-PIPE TRANSFER CAPABILITY - An electric pump with time setting and enhanced oil-pipe transfer capability, which comprising at least: an electric pump, a timer and an electromagnetic valve; the electric pump is used to supply lubricating oil for the engine operation, and a motor is equipped to provide boosting pressure and strong transfer power, thus preventing reduction of suction and oil feed of oil pipeline for the intake manifold of engine during urgent acceleration; the timer is electrically connected with the engine's starting switch and motor, helping to activate the energized engine after startup, and enable the startup and shut-off of timing control oil feed within a fixed time; the electromagnetic valve is electrically connected with the timer and also controlled by it for the opening and closing, so as to realize correct and accurate oil feed and braking. | 05-26-2011 |
20110223037 | VARIABLE SPEED PROGRESSING CAVITY PUMP SYSTEM - A pump system including a pump and a sensor system for monitoring a fluid production of the pump and providing an output indicative of the fluid production. The sensor system is configured to use at least two discreet methodologies for measuring the fluid production. The pump system further includes a control system operatively coupled to the sensor system and the pump and configured to automatically vary the speed of the pump at least partially based upon the output of the sensor system. | 09-15-2011 |
20120087804 | METHOD AND PUMP UNIT FOR A PRESSURE SEWERAGE SYSTEM - A pump unit for a pressure sewage system, including a pump for insertion in a sewage holding tank, the pump being capable of activation for pumping sewage out of the holding tank to an external pipeline, and a timer unit enabling activation of the pump for a first predetermined time period and preventing activation of the pump for a second predetermined time period directly following the first time period. | 04-12-2012 |
20120219428 | Pool timer - A swimming pool or spa pump control system to selectively control the operation of a recirculating pump to prevent damage to the recirculating pump that could result from specific operating conditions and to optimize energy consumption by varying the run time of the recirculating pump throughout the year as a function of the sun's energy impacting the earth's surface as a measure of solar radiation incident on the surface of the pool water or solar heat energy incident on the pool water comprising a controller including a microcontroller to calculate the pump run time for a geographically specific location dependent upon the time of year or date based upon the solar radiation or heat energy adjusted for specific swimming pool or spa site, and a plurality of sensors to monitor various operating conditions coupled to the controller to deactivate the recirculating pump when any one of the operating conditions exceeds a predetermined or set value. | 08-30-2012 |
20120288376 | IMPROVED CONTROL METHOD AND DEVICE FOR OXYGEN PUMP CELLS OF SENSORS IN INTERNAL COMBUSTION ENGINES OR EXHAUST GAS AFTER TREATMENT SYSTEMS OF SUCH ENGINES - It is described a method for controlling an oxygen pump cell of a sensor in an internal combustion engine or in the exhaust gas after treatment system of such an engine, comprising the step of adding, to a feedback control of the current in the pump cell, a further feed-forward control path estimating an expected oxygen pump current on the basis of characteristics of the exhaust gas composition calculated from engine operation data. | 11-15-2012 |
20130052039 | PUMP ASSEMBLY - A pump assembly includes a centrifugal pump driven by an electric motor and is provided with a time display which is formed by an annular row of light diodes, wherein a time is assigned to each light diode. | 02-28-2013 |
20130142669 | SYSTEMS AND METHODS FOR CONTROLLING A VARIABLE SPEED WATER PUMP - Systems and methods for providing an improved strategy for controlling a variable speed water pump in a vehicle. In some embodiments, more than one water pump speed function is calculated based on values obtained from vehicle sensors, and a controller chooses among the water pump speed function results to set a water pump speed. In some embodiments, the water pump speed is increased when driveline torque is greater than a threshold amount for an amount of time that varies based on the driveline torque. In some embodiments, ambient temperature is considered while determining whether the water pump should provide full coolant flow to an auxiliary coolant loop of a trailer. | 06-06-2013 |
20130294929 | METHOD FOR CONTROLLING A REFILLING MOTOR THAT DRIVES A HYDRAULIC PUMP - Method for controlling a refilling motor ( | 11-07-2013 |
20130330205 | 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 electric motor can be leveraged in combination with the existing components of a machine, such as the main fluid pump of the machine. | 12-12-2013 |
20130336803 | CONTROL ARRANGEMENT FOR CONTROLLING A PISTON PUMP UNIT FOR LIQUID CHROMATOGRAPHY - A control arrangement for controlling a piston pump unit for liquid chromatography, in particular high-performance liquid chromatography, is described. The piston pump unit has at least two piston-cylinder units which operate cyclically in a phase-offset manner and generate, at an outlet port, a predetermined flow of a liquid medium to be delivered. A system pressure is established at the outlet port, irrespective of an associated fluid load resistance. The control arrangement is configured to record the pressure in the cylinder volume of at least a first of the at least two piston-cylinder units. During a measurement phase of the compression phase of the first piston-cylinder unit or during a measurement phase of the decompression phase of the first piston-cylinder unit, the control arrangement stops the drive device for the first piston-cylinder unit for a predetermined time period and in the process records measurement data which characterize the time profile of the pressure. | 12-19-2013 |
20130343907 | PUMP USING MULTI VOLTAGE ELECTRONICS WITH RUN DRY AND OVER CURRENT PROTECTION - A pump has a signal processor, including one forming part of a printed circuit board assembly, that receives signaling containing information about a voltage supplied to a motor to run a particular pump model, and also containing information about whether a current draw of the pump is lower than a predetermined low current level or is higher than a predetermined high current level; and determines whether to shut off the pump after a predetermined time, based on the signaling received. The signal processor provides control signalling to shut off the pump after the predetermined time if the current draw of the pump is lower than the predetermined low current level or is higher than the predetermined high current level, where the predetermined low current level and the predetermined high current level depend on the voltage being supplied to the motor to run the particular pump model. | 12-26-2013 |
20140044558 | AIR BLOWER AND CONTROL METHOD THEREOF - When blowing out air, an air blower provides a user with feeling of being exposed to natural wind. A control unit of an air conditioner controls a fan motor of the air conditioner so that an airflow speed of a fan of the air conditioner changes over time with a synthesis pattern composed of a plurality of patterns including a sine-wave-like waveform pattern and a hill-like variation pattern having a width of less than a quarter cycle of the waveform pattern and a height of equal to or greater than an amplitude of the waveform pattern for each cycle of the waveform pattern. | 02-13-2014 |
20140044559 | Pool Timer - A swimming pool or spa pump control system to selectively control the operation of a recirculating pump to prevent damage to the recirculating pump that could result from specific operating conditions and to optimize energy consumption by varying the run time of the recirculating pump throughout the year as a function of the sun's energy impacting the earth's surface as a measure of solar radiation incident on the surface of the pool water or solar heat energy incident on the pool water comprising a controller including a microcontroller to calculate the pump run time for a geographically specific location dependent upon the time of year or date based upon the solar radiation or heat energy adjusted for specific swimming pool or spa site, and a plurality of sensors to monitor various operating conditions coupled to the controller to deactivate the recirculating pump when any one of the operating conditions exceeds a predetermined or set value. | 02-13-2014 |
20140064985 | Priming Protection - Embodiments of the invention provide a pumping system for at least one aquatic application. The pumping system includes a pump, a motor coupled to the pump, and a controller in communication with the motor. The controller determines an actual power consumption of the motor and compares the actual power consumption to a reference power consumption. The controller also determines that the pump is in an unprimed condition if the actual power consumption is less than the reference power consumption and that the pump is in a primed condition if the actual power consumption is at least equal to the reference power consumption. | 03-06-2014 |
20140093393 | CONTROL DEVICE FOR ELECTRIC WATER PUMP - In an electric water pump for circulating cooling water of an engine mounted on a vehicle or similar, a time interval to switch energized phase of a pump motor is set to longer than a time interval during a normal flow rate control (during a flow rate control at a flow rate equal to or more than a flow rate where an electromotive force generated at a non-energized phase is detectable). In the case where a pump discharge pressure (or a water temperature of the cooling water) repeatedly increases and decreases in this extremely low flow rate state, it is determined that the electric water pump normally rotates as required. This allows providing the extremely low flow rate state between a water stop state and a water circulation state in a control for stop of water in an engine cooling system. | 04-03-2014 |
20140105754 | CONTROL METHOD OF ELECTRIC COMPRESSOR CONTROLLER AND REFRIGERATOR - A method of controlling an electric compressor of the present invention, comprises the steps of: setting a specified constant rotating speed as a target rotating speed (Rt) of a DC motor ( | 04-17-2014 |
20140161628 | PULSE ACTIVATED ACTUATOR PUMP SYSTEM - A pump system containing no external parts or valves is provided. The pump system is characterized by a common type of actuating mechanism and incorporates reversibly expanding actuators, preferably electroactive actuators. Fluid is caused to move at a selected flow rate and direction by sequentially activating contiguous actuators located inside the pump. The pump may be used to pump a variety of fluids and may be used in various industrial, commercial, medical, aeronautical, or military applications. | 06-12-2014 |
20140186191 | OPERATING MACHINE - To provide a hybrid type or battery type working machine which hardly gives a feeling of strangeness on an operation to an operator and in which electric power stored in a storage battery can be used effectively within an operation scheduled time set in advance. | 07-03-2014 |
20140193275 | DEVICE FOR CONTROLLING A PISTON PUMP UNIT FOR LIQUID CHROMATOGRAPHY - A control device of a piston pump unit comprising at least two piston-cylinder units that operate in a phase-shifted manner for the purpose of liquid chromatography and to a piston pump unit is described. The control device corrects fluctuations of the system pressure while switching from one piston cylinder unit to the respective other piston cylinder unit. The fluctuations can occur as a result of the cooling of the liquid medium that is heated in an adiabatic manner during a pre-compression phase in the working piston. The control unit controls the piston speed of at least one piston-cylinder unit during the transition phase depending on at least one characteristic, which is ascertained from chronologically previously detected pressure values, such that variations of the system pressure as a result of the cooling of the adiabatically heated medium are at least partially compensated for. | 07-10-2014 |
20140219819 | RECIPROCATING POSITIVE DISPLACEMENT PUMP WITH ELECTRIC REVERSING MOTOR - A pump system comprises an electric motor, a pump, a converter and a controller. The electric motor has a rotational output shaft that is rotatable in a first rotational direction and an opposite second rotational direction. The pump has a linearly displaceable input shaft that is movable in a first linear direction and an opposite second linear direction. The converter couples the output shaft to the input shaft such that rotation of the output shaft in the first rotational direction translates the input shaft in the first linear direction, and rotation of the output shaft in the second rotational direction translates the input shaft in the second linear direction. The controller repeatedly reverses rotation of the output shaft to produce reciprocating motion of the input shaft. | 08-07-2014 |
20140271230 | BACK PRESSURE RELIEF MOTOR CONTROL FOR A NON-BLEEDER TURBINE STYLE HVLP SPRAY GUN - A high volume low pressure (HVLP) turbine assembly includes a housing having a turbine which includes a turbine fan rotatable within a turbine casing. A microcontroller is disposed within the housing, where the microcontroller controls a speed of an electric motor powering the turbine fan. A pressure sensor and an airflow sensing means is in airflow communication with a turbine air outlet. The HVLP turbine assembly does not have a bleeder port in airflow communication with the turbine air outlet. Rather, the microcontroller is configured to reduce the speed of the electric motor to an idle speed after a predetermined time has elapsed, wherein the predetermined time is started when the airflow sensing means indicates a period of inactivity. | 09-18-2014 |
20140308138 | COMPRESSOR WITH FLOODED START CONTROL - A system and method for flooded start control of a compressor for a refrigeration system is provided. A temperature sensor generates temperature data corresponding to at least one of a compressor temperature and an ambient temperature. A control module receives the temperature data, determines an off-time period since the compressor was last on, determines an amount of liquid present in the compressor based on the temperature data and the off-time period, compares the amount of liquid with a predetermined threshold, and, when the amount of liquid is greater than the predetermined threshold, operates the compressor according to at least one cycle including a first time period during which the compressor is on and a second time period during which the compressor is off. | 10-16-2014 |
20140314582 | Flow Control - A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor, means for determining first and second performance values of the pumping system, and means for comparing the first and second performance values. The pumping system further includes means for determining an adjustment value based upon the comparison, means for determining a second motor speed based upon the adjustment value, and means for controlling the motor in response to the second motor speed. In one example, the pumping system includes means for determining a value indicative of a flow rate of water moved by the pump. In addition or alternatively, the pumping system includes a filter arrangement. A method of controlling the pumping system for moving the water of the swimming pool is also disclosed. | 10-23-2014 |
20140322029 | PUMP USING MULTI VOLTAGE ELECTRONICS WITH RUN DRY AND OVER CURRENT PROTECTION - A pump system features a power adapter and a pump having a signal processor. The power adapter includes voltage settings that respond to a voltage setting by a user and provide a selected voltage. The signal processor receives signaling containing information about the selected voltage supplied to a motor to run the pump, and also containing information about whether a current draw of the pump is lower than a predetermined low current level or is higher than a predetermined high current level; and determines whether to shut off the pump after a predetermined time, based on the signaling received. | 10-30-2014 |
20140322030 | Control Algorithm of Variable Speed Pumping System - A pumping system includes a pump for moving water. In one aspect, this is in connection with performance of an operation. The system includes a variable speed motor operatively connected to drive the pump. A value indicative of flow rate of water is determined and the motor is controlled to adjust the flow rate indicative value toward a constant. A value indicative of flow pressure is determined and the motor is controlled to adjust the flow pressure indicative value toward a constant. A selection is made between flow rate control and flow pressure control. In another aspect, the pump is controlled to perform a first operation, and is operated to perform a second water operation. Control of operation of the pump to perform the first water operation is altered in response to operation of the pump to perform the second operation. | 10-30-2014 |
20140348666 | PORTABLE DC COOLING FAN WITH SIMULATED OSCILLATION - The invention provides a portable DC cooling fan that performs the dual function of a cooling fan and a sleep aid by generating air movement and white noise useful for inducing sleep. The portable device includes a DC axial fan that blows air in one direction and is under the control of an electrical control system that receives power through an AC/DC adapter. The electrical control system includes one or more user interface switches through which a user can select fan speed and optionally, set the fan on oscillation mode, and thereby simulating airflow and the sounds of a standard oscillating fan without undergoing rotation. The portable DC cooling fan of the invention includes a housing having a plurality of openings on its front and rear surfaces that enable maximum air flow through the device. The invention also provides an article of manufacturer comprising an AC/DC adapter packaged with a portable DC cooling fan of the invention. | 11-27-2014 |
20140356190 | METHOD FOR THE START-UP CONTROL OF AN ELECTRIC VACUUM PUMP - The invention relates to a method for controlling a start-up of an electric vacuum pump for a vacuum system of a vehicle, wherein the start-up can occur according to at least two different start-up modes, i.e., according to a standard mode and according to at least one special mode, wherein in the standard mode the vacuum pump is connected to a supply voltage in a non-clocked manner and in the special mode the vacuum pump is connected to a supply voltage in a dynamically clocked manner. | 12-04-2014 |
20150098836 | BEVERAGE PRODUCTION MODULE AND METHOD FOR OPERATING A BEVERAGE PRODUCTION MODULE - A beverage production module includes a pump for delivering a fluid from a tank to an extraction chamber, a power source for the pump and a controller for operating the pump and for controlling the voltage applied from the power source to the pump, wherein the controller is adapted to operate the pump at a normal operation voltage (U3) and to operate the pump over a predefined time (T1,T2) at a reduced voltage level (U1, U2). A method for operating the pump of a beverage production module is also provided. | 04-09-2015 |
20150132148 | DUAL SPEED MOTOR CONTROLLER AND METHOD FOR OPERATION THEREOF - A dual speed pump controller includes a motor controller for operating a dual speed motor. The controller includes an operating speed circuit for operating the motor in one of a first speed or a second speed, the first speed being greater than the second speed; an event circuit for operating the motor at the first speed before a predetermined event and operating the pump at the second speed after the predetermined event. | 05-14-2015 |
20160061204 | Priming Protection - Embodiments of the invention provide a pumping system for at least one aquatic application. The pumping system includes a pump, a motor coupled to the pump, and a controller in communication with the motor. The controller receives input of a performance value that is determined utilizing information from operation of the motor and compares the performance value to a reference value. The controller also is configured to prime and run the pump when the performance value equals the first reference value and to continue to do so until the performance value equals a second reference value. Alternatively, the controller receives user input of an amount of time the system can take to attempt to successfully prime the pump and is configured to operate the motor at maximum speed until the amount of time elapses. | 03-03-2016 |
20160076540 | COMPRESSOR WITH FLOODED START CONTROL - A system and method for flooded start control of a compressor are provided. An ambient temperature sensor generates ambient temperature data and a compressor temperature sensor generates compressor temperature data. A control module receives the ambient temperature data and the compressor temperature data, determines whether the outdoor ambient temperature is rising faster than the compressor temperature, determines whether the outdoor ambient temperature is greater than the compressor temperature by more than a predetermined threshold for more than a predetermined time period, and, in response to the outdoor ambient temperature rising faster than the compressor temperature and the outdoor ambient temperature being greater than the compressor temperature by more than the predetermined threshold for more than the predetermined time period, operates the compressor according to at least one cycle including a first time period during which the compressor is on and a second time period during which the compressor is off. | 03-17-2016 |
20160076541 | COMPRESSOR WITH FLOODED START CONTROL - A system and method for flooded start control of a compressor for a refrigeration system are provided. A sensor generates sensed data corresponding to a condition of the refrigeration system. A control module is configured to operate the compressor in a flooded-start control mode including operating the compressor according to a cycle with a first time period during which the compressor is on and a second time period during which the compressor is off. The control module operates the compressor in an initial time period, without using the flooded-start control mode, with liquid refrigerant present in the compressor and monitors the sensed data from the sensor. The control module operates the compressor in the flooded start control mode after determining the first time period, the second time period, or a number of cycles, based on the sensed data monitored during the initial time period. | 03-17-2016 |
20160076542 | COMPRESSOR WITH FLOODED START CONTROL - A system and method for flooded start control of a compressor having a crankcase heater are provided. A control module receives sensed data from a sensor, determines a current rate of liquid migration into the compressor, and compares the current rate with first and second predetermined thresholds. The control module operates the compressor in a flooded-start control mode, including operating the compressor according to at least one cycle with a first time period when the compressor is on and a second time period when the compressor is off. The control module operates the compressor in the flooded start control mode when the current rate is greater than the first predetermined threshold, activates the crankcase heater when the current rate is between the first and second predetermined thresholds, and operates the compressor without the flooded start control mode when the current rate is less than the second predetermined threshold. | 03-17-2016 |
20160102663 | PUMP CONTROL SYSTEM WITH ISOLATED AC VOLTAGE DETECTOR - A pump and a method of operating the pump at a duty-cycle based on the input voltage of the power source energizing the pump. The pump includes at least a first opto-coupler electrically coupled, to the power source. The method includes detecting at least a first opto-coupler state transition; determining a zero-crossing of the input voltage; determining an elapsed time between the zero-crossing and the first opto-coupler state transition; and operating the pump by energizing a power switch at a duty-cycle based on the elapsed time. | 04-14-2016 |
20160160855 | METHOD AND APPARATUS FOR CONTROL OF A PLUNGER LIFT SYSTEM - A method and apparatus for operating a plunger lift system in a well is provided. The methods can include: opening a control valve and allowing a plunger to rise to a top of the well; determining an actual rise time of the plunger based on a time it takes the plunger to rise to the top of the well; using actual rise time of the plunger and a target rise time calculating adjustments to the afterflow time or close time; and allowing the afterflow time to pass before closing the control valve and keeping the valve closed for the close time. The methods are repeated, each time calculating a new adjusted afterflow time or adjusted close time to incrementally alter these times to improve the operation of the plunger lift system. | 06-09-2016 |
20160177941 | METHODS AND SYSTEM FOR ENHANCING FLOW OF A FLUID INDUCED BY A ROD PUMPING UNIT | 06-23-2016 |
20180023557 | OPERATING METHOD AND ACTUATION DEVICE FOR A PISTON PUMP | 01-25-2018 |
20180023574 | Flow Control | 01-25-2018 |