Class / Patent application number | Description | Number of patent applications / Date published |
417032000 | Responsive to pump or pump fluid temperature | 44 |
20080226463 | System And Method For Delivering A Pressurized Gas From A Cryogenic Storage Vessel - A system and method pumps process fluid from a cryogenic storage vessel to a vaporizer, and delivers the fluid as a pressurized gas. The method includes measuring process fluid temperature after the process fluid exits the vaporizer, temporarily suspending operation of the pump when the process fluid temperature is below a threshold temperature, and restarting a suspended pump if at least one predefined enabling condition is satisfied and process fluid pressure is less than a high pressure threshold. The system comprises components that cooperate with one another to execute the method, including a storage vessel, a pump, a vaporizer, a conduit for delivering a pressurized gas from the vaporizer to the end user, a pressure sensor and a temperature sensor for measuring process fluid properties within the conduit, and a controller for commanding operation of the pump responsive to temperature and pressure measurements. | 09-18-2008 |
20080240929 | Pumping Cassette - A sensor apparatus and sensor apparatus system for use in conjunction with a cassette, including a disposable or replaceable cassette. In some embodiments, the cassette includes a thermal well for permitting the sensing of various properties of a subject media. The thermal well includes a hollow housing of a thermally conductive material. In other embodiments, the cassette includes sensor leads for sensing of various properties of a subject media. The thermal well has an inner surface shaped so as to form a mating relationship with a sensing probe. The mating thermally couples the inner surface with a sensing probe. In some embodiments, the thermal well is located on a disposable portion and the sensing probe on a reusable portion. | 10-02-2008 |
20080292471 | Air Compressor Control - Controlling air compressors based on a temperature of air compressed by the air compressor. A temperature of air compressed by the air compressor is sensed. The sensed compressed air temperature is compared with a predetermined threshold temperature. The air compressor is deactivated when the sensed temperature exceeds the threshold temperature. The threshold temperature may be selected to inhibit carbon formation caused by oil thermal breakdown. | 11-27-2008 |
20080304976 | TEMPERATURE MANAGEMENT FOR ELECTRIC MOTOR DRIVEN PUMP - A hydraulic pump system is provided that includes a pump driven by an electric motor. The electric motor includes windings that receive power from a power source. In one example, a temperature sensor is arranged in proximity to hydraulic fluid associated with the pump, such as at an input of the pump. In another example, the temperature sensor measures the ambient temperature to predict the viscosity of the pump based upon cool down rates of the system. A controller monitors a temperature at the temperature sensor and commands power to be provided to the windings to generate heat. Electric motor power consumption can be monitored to determine viscosity. The heat reduces the viscosity of the hydraulic fluid. Bleed air may be selectively provided to a casing associated with the hydraulic fluid in response to a command from the controller. The controller actuates a valve to regulate the flow of bleed air to the casing to provide supplemental heat to the heat provided by the windings. In this manner, the viscosity of the hydraulic fluid is more efficiently managed to provide desired startup of the pump in cold conditions. | 12-11-2008 |
20080310967 | INTELLIGENT AIR MOVING APPARATUS - An intelligent air moving apparatus for cooling an electronics enclosure includes a motor for driving a fan at a variable rotational speed and a microcontroller for controlling the rotational speed of the motor. The microcontroller includes a speed sensor for sensing the rotational speed such that when the sensed rotational speed deviates below a target speed, the microcontroller detects a locked rotor condition. | 12-18-2008 |
20090028720 | Vacuum pump - A vacuum pump capable of accurately detecting a rotor temperature based on a change in permeability of a magnetic material. Two targets are fixed to a nut opposed to a gap sensor. The nut is made of pure iron, and a surface of the nut opposed to the gap sensor serves as a target. The target has a Curie temperature greater than a temperature monitoring range, and each of the targets has a Curie temperature falling within the temperature monitoring range. When the targets become opposed to the gap sensor in turn according to rotation of a rotor, three types of signals are output from the gap sensor. The difference-signal generation means generates a difference signal of each the targets, on the basis of a signal of the target. The difference signal is compared with a reference signal V | 01-29-2009 |
20090041589 | Oil-Injected Compressor with a Temperature Switch - An oil-injected compressor, with an oil circuit for lubrication, and an oil separating device which is used to separate the oil from the compressed air. A self-resetting temperature switch, which is used to switch off the compressor unit when the maximum temperature limit of the incoming compressed air is reached, is provided in the region of the inlet of the compressed air, which contains oil, in the oil separating device. At least one non-self-resetting additional temperature switch is provided in the internal area of the oil separating device, which immediately switches off the compressor unit following a fire or an explosion of the compressed air, which contains oil, and which is contained in the oil separating device. | 02-12-2009 |
20090068024 | PROGRESSING CAVITY PUMP WITH HEAT MANAGEMENT SYSTEM - A progressing cavity pump heat management system including a progressing cavity pump and a controller. The controller is configured to receive data relating to the temperature of materials exiting the pump and the differential pressure across the pump to determine whether corrective action is required. The controller is configured such that if the controller determines that corrective action is required, the controller institutes corrective action to seek to reduce at least one of the temperature of materials exiting the pump or differential pressure across the pump. | 03-12-2009 |
20090123294 | FUEL CELL WITH TEMPERATURE SENSOR DEVICE - The present invention relates to a fuel cell with temperature sensor device, characterized in which the membrane electrode assembly of the fuel cell is installed on a circuit board where the circuit board comprises a temperature sensor module having resistance property. The temperature sensor module is installed on the circuit board or a heat sink where the resistance of the temperature sensor module is used to determine the temperature surrounding the temperature sensor module. | 05-14-2009 |
20090129937 | DOWNHOLE PUMP CONTROLLER - An apparatus for controlling a downhole pump. The pump has a stator, a rotor and a pump drive. The temperature monitoring apparatus includes at least one temperature sensor positioned downhole in thermal communication with the downhole pump for measuring the downhole temperature of the downhole pump, and a pump controller connected to the temperature sensor by a wireless communication link for receiving measurements from the temperature sensor. The pump controller has controls for controlling the speed of the pump. | 05-21-2009 |
20090317261 | Pumping system and method of operation - A pumping system comprises a pumping mechanism, a motor for driving the pumping mechanism, means for supplying power of a variable frequency to the motor, control means for setting a maximum value for a current in the motor, and means for supplying to the control means data indicative of the temperature of gas exhaust from the pumping mechanism and a temperature of the stator of the pumping mechanism, wherein the control means is configured to use the received data to adjust the maximum value during operation of the pumping system. | 12-24-2009 |
20100111705 | REFRIGERANT COMPRESSOR - A refrigerant compressor is provided that can be assembled easily and can quickly discharge lubricating oil that leaks from contact sliding parts of its mechanical seal so as to prevent the oil from turning into sludge around the stationary ring. In a refrigerant compressor in which a mechanical seal which shaft seals the inner side and the outer side of a housing is installed at a portion of the housing through which a rotating shaft penetrates, a mechanical seal comprises a stationary ring securely fastened to the inner circumferential surface of a boss portion, a rotary ring securely fastened to the outer circumferential surface of the rotating shaft to the inside of the stationary ring so as to face the stationary ring, whereby sliding contact is formed between sides of the stationary ring and the rotary ring. The inner circumferential surface of the boss portion to the outside of the stationary ring is provided with an inclined portion over the entire circumference or at least the gravitationally lower portion of the inner circumferential surface, which enlarges from the stationary ring side toward an oil discharge hole to the outside of the stationary ring. | 05-06-2010 |
20100150736 | FAN SYSTEM HAVING IMPROVED AVAILABILITY AND METHOD FOR ITS OPERATION - The present invention relates to a fan system and a method for its operation, including a control module ( | 06-17-2010 |
20100172763 | Process for starting a pump - Process for starting a pump intended to pump a liquid contained in a tank and to produce a substantially constant outlet pressure (setpoint pressure), according to which: 1/ the temperature (T | 07-08-2010 |
20100215510 | RPM Controller Using Drive Profiles - A control circuit for controlling the rotational speed of a fan may include a memory element to store operating data corresponding to an operational profile of the fan defined by RPM (revolutions per minute) versus temperature, with the operating data comprising a respective temperature value and a respective RPM value for each respective operating point representing a change in slope of a function that corresponds to the operational profile of the fan. A processing unit may operate to receive a present temperature value, retrieve the operating data from the storage unit, and identify a pair of consecutive operating points such that the present temperature value is greater than a lower respective temperature value of the pair of consecutive operating points, and lower than a higher respective temperature value of the pair of consecutive operating points. The processing unit may calculate a desired RPM value corresponding to the present temperature value by performing linear interpolation between the pair of consecutive operating points, and output the desired RPM value to a closed-loop fan controller configured to control a rotational speed of the fan according at least to the desired RPM value. | 08-26-2010 |
20100303636 | METHOD OF CONTROLLING AN AUXILIARY PUMP FOR A TRANSMISSION - A method of operating an auxiliary pump for an electrically variable transmission includes purging the auxiliary pump when an auxiliary pump temperature is below a minimum operating temperature and above a minimum purge temperature. The auxiliary pump fluid temperature and the minimum purge temperature are determined based upon the transmission fluid temperature and the ambient temperature. | 12-02-2010 |
20100303637 | METHOD, APPARATUS AND USE OF THE APPARATUS FOR CONTROLLING A COMPRESSOR - A method controls a compressor for delivering a pressure medium into a pressure medium system, for example an air suspension system in a motor vehicle. In the method, the delivery of the pressure medium can be switched on and off as a function of a temperature signal by the compressor temperature being measured by a temperature sensor which is arranged on the compressor and the switching on and off of the compressor is controlled by an electronic control unit. The switching-on time duration and/or the switching-off time duration or the switching-off and/or the switching-on temperature are/is determined from the rise of the compressor temperature which is measured at short time intervals. | 12-02-2010 |
20110182752 | METHOD FOR CONTROLLING THE FEED RATE OF A FEED PUMP - A method for controlling the feed rate of a feed pump, including a drive part having a drive motor and a hydraulic part having an intake opening, a discharge opening and a feed mechanism situated in between, a setpoint feed rate being predefined and the feed pump being triggered based on the setpoint feed rate, the temperature of the fluid and a pressure difference between the intake opening and the discharge opening of the hydraulic part of the feed pump. | 07-28-2011 |
20120063920 | OIL SUPPLY APPARATUS FOR TRANSMISSION - Oil supply apparatus having an electric motor, an oil pump driven by the electric motor and supplying oil to a transmission, an oil temperature sensor detecting oil temperature, and a controller setting a drive torque value and controlling the electric motor so that the electric motor outputs a drive torque according to a detection oil temperature. The controller is configured to perform rotation speed control of the electric motor so that when judging that there is a possibility that the detection oil temperature and oil temperature close to the oil pump are different at electric motor starting, the electric motor rotates at a lower rotation speed than where the electric motor rotates by the drive torque value according to the detection oil temperature before performing the electric motor control by which the electric motor outputs the drive torque according to the detection oil temperature. | 03-15-2012 |
20120128507 | COOLING ARRANGEMENT AND METHOD OF OPERATION FOR A FAN CONTROL - A method of operating a fan control of a cooling arrangement having at least one exhaust air unit that withdraws air heated by electrical or electronic parts of a plurality of plug-in components, and having at least one cooling unit that cools air used for cooling purposes including determining a selected temperature difference for the air used for cooling the server rack relative to power consumption of the at least one exhaust air unit and the at least one cooling unit depending on the temperature difference; measuring at least one actual temperature difference between at least two temperatures of the air used for cooling purposes; and adjusting the speed of a fan for the at least one exhaust air unit depending on a deviation between the determined optimized temperature difference and the actual temperature difference measured. | 05-24-2012 |
20120171048 | ELECTRONIC DEVICE WITH MINIATURE HEAT DISSIPATING STRUCTURE - An electronic device includes a circuit board comprising a first metal layer and a second metal layer. The first metal layer is affixed to one side of the circuit board, and the second metal layer is affixed to the first metal layer. A channel is defined between the first metal layer and the second metal layer. A coolant container is used to accommodate coolant. A driving unit is used to drive the coolant to circuit in the channel. | 07-05-2012 |
20120171049 | LUBRICANT PUMP AND LUBRICATING SYSTEM WITH PUMP HEATER - A lubricant pump is disclosed for delivering lubricant to at least one lubricating point. The pump features a lubricant container, a pump unit, a drive assigned to the pump unit, and at least one lubricant outlet and a control unit assigned to the drive. At least one heating element is also provided and can be actuated by the control unit and/or another control unit. | 07-05-2012 |
20120244012 | Apparatus for Controlling Electric Oil Pump - The invention in one aspect, provides an apparatus for controlling an electric oil pump that can determine the occurrence of idling even in a region in which determination based on a load of the electric oil pump becomes difficult. | 09-27-2012 |
20120308403 | MOTOR CONTROL DEVICE - A motor control device includes a control condition storage unit storing at least one of a control condition defined by an equivalent voltage supplied to a three-phase motor and a control condition defined by relationship between the equivalent voltage supplied to the three-phase motor and a frequency of PWM signal, a control condition extracting unit extracting the control condition from the control condition storage unit in response to a temperature of a viscous fluid supplied by a pump having the three-phase motor as a power source, and a PWM controlling unit controlling a switching element included in an inverter circuit based on a PWM signal related to the extracted control condition when the three-phase motor is started. | 12-06-2012 |
20130004333 | METHOD FOR REGULATING A COMPRESSOR - A method for regulating a compressor of a pressure supplying system. The compressor is switched on and off dependent on a threshold temperature of one or more components of the pressure supplying system, the threshold temperature being ascertained using a temperature calculating method. The respective threshold temperature is ascertained by correlating the reciprocal temperature dependence that exists as a result of heat transfer between adjacent components. | 01-03-2013 |
20130078111 | CONTROL APPARATUS FOR ELECTRIC OIL PUMP - A temperature range in which an electric oil pump to supply oil to a vehicle drive system can start is enlarged to enhance an effective use degree, enhance a start success probability, and suppress malfunction occurrence. When a measured oil temperature To is in a temperature range (T | 03-28-2013 |
20130084192 | COOLING FAN CONTROL DEVICE AND CONTROL METHOD THEREOF - Disclosed herein are a cooling fan driving control device and a control method thereof non-linearly controlled to a duty ratio (%) of a PWM signal. The cooling fan driving control device includes a cooling fan control device including a temperature sensor, a microprocessor unit generating a PWM signal corresponding to a temperature measured by the temperature sensor, and a cooling fan driving unit driving the cooling fan according to a duty ratio of the PWM signal, comprising: a duty ratio detection unit receiving the PWM signal from the microprocessor unit to detect the duty ratio (%) of the PWM signal; and a duty ratio control device comparing the duty ratio (%) detected from the duty ratio detection unit with a predetermined threshold value, controlling the duty ratio (%) of the PWM signal according to the comparison results, and then, outputting the controlled PWM signal to the cooling fan driving unit. | 04-04-2013 |
20130089436 | DIAGNOSTIC SYSTEM AND METHOD FOR A SWITCHABLE WATER PUMP - A system includes a pump control module and a pump diagnostic module. The pump control module switches a switchable water pump from off to on. The pump diagnostic module diagnoses a fault in the switchable water pump based on a first difference between an engine material temperature and an engine coolant temperature when the switchable water pump is switched from off to on. The engine coolant temperature is a temperature of coolant circulated through an engine and the engine material temperature is a temperature of at least one of an engine block and a cylinder head. | 04-11-2013 |
20130094972 | Climate Thermal Load Based Minimum Flow Rate Water Pump Control - A control system for minimizing the flow rate and energy consumption of a water pump in a vehicle. The control system and method correlate a climate thermal load value with the temperature of the coolant in a climate control cooling circuit. A correlation is performed by mapping the inputs to a desired pump flow rate that is determined to be necessary at a minimum to provide adequate cooling for the engine and for air conditioning or heating the vehicle. | 04-18-2013 |
20130101437 | ALTITUDE-DEPENDENT COMPRESSOR CONTROL - A method for controlling an electrically driven compressor, which can be switched on and off as a function of demand, of a pneumatic suspension system, wherein the temperature of the compressor is calculated according to a temperature model inside a control device, and the compressor is switched on or off as a function of the calculated temperature, wherein, for the calculation of the temperature of the compressor according to the temperature model, the control device takes into account the air pressure surrounding the vehicle as an input variable, and the parameters of the temperature model are adapted as a function of this air pressure. | 04-25-2013 |
20130149170 | METHOD OF CONTROLLING ELECTRIC OIL PUMP IN HYBRID VEHICLE - A method of controlling an electric oil pump in a hybrid vehicle controls, at an ultra-low temperature, the electric oil pump so that the number of revolutions thereof is not unnecessarily increased, so as to prevent unnecessary power consumption of the battery, thereby contributing to an increase in fuel efficiency, to prevent unnecessary noise, thereby improving the market quality of the vehicle, and to improve the endurance of the electric oil pump. | 06-13-2013 |
20130177450 | CONTROL OF A PUMP DEVICE - A method of controlling a pump device for discharging fluid, wherein the method comprises the steps of providing a heat portion adapted to be thermally coupled to the fluid to allow heat transfer there between when the fluid is at or above a certain level; monitoring a temperature parameter reflecting a temperature of the heat portion, the temperature parameter including a temperature value of the temperature of the heat portion; calculating a cooling rate value (CRV), the calculation including a comparison between at least two temperature values measured at different times; performing a pumping operation analysis including a comparison between a present cooling rate value (CRV) and a reference cooling rate value (ref), the reference cooling rate value representing a specific cooling rate of the heat portion; and initiating pumping operation to discharge the fluid if the cooling rate value is equal to or exceeds the reference cooling rate value. | 07-11-2013 |
20130230410 | Air Pump Having An Auto-Stop Control Device - An air pump includes a casing, a blower connected with a motor, an air flow direction switching device, an air valve, and an auto-stop control device. The air flow direction switching device includes a pressure sensor and a pressure switch. The air flow direction switching device includes a movable box and a driving device which drives the movable box. The movable box has an arm and an activation portion. An inflation switch and a deflation switch are electrically connected in parallel to a circuit and are controlled to activate by the activation portion. The pressure switch includes a dynamic contact point connected to the motor, and two static contact points respectively electrically connected to the inflation switch and the deflation switch. The dynamic contact point has a terminal which alternatively contacts the two static contact points. | 09-05-2013 |
20130251541 | Apparatus for Controlling Electric Pump - In an apparatus for controlling an electric pump supplying operating oil to a driving system or the like of a vehicle, control satisfying both responsiveness and reduction in power consumption is performed even in a case in which an oil temperature sensor and a pump characteristic are abnormal. After starting of the electric pump, feedback control is performed in which a rotation number Nm of a driving motor is settled in a target rotation number Na set to satisfy predetermined performance. After satisfying a predetermined condition in which the motor rotation number Nm is in a stable state, motor current Im is settled in an indicated current Ip within a range of being equal to or less than a current limit value IL while the motor rotation number Nm is maintained equal to or greater than a required rotation number Np corresponding to the indicated current Ip. | 09-26-2013 |
20130323083 | CONVEYING UNIT FOR A REDUCING AGENT - A conveying unit for conveying reducing agent from a tank to an exhaust gas treatment device for treating the exhaust gases from an internal combustion engine, includes a pump having a drive or drive unit and a pump chamber unit or containment. The pump chamber unit or containment at least partly delimits a pump chamber and the drive or drive unit and the pump chamber unit or containment are detachable from one another. | 12-05-2013 |
20140017093 | SYSTEMS AND METHODS FOR REGULATING THE REASONANT FREQUENCY OF A DISC PUMP CAVITY - A disc pump system includes a pump body having a substantially cylindrical shape defining a cavity for containing a fluid. The cavity having a resonant cavity frequency is formed by an internal sidewall and substantially closed at both ends by a first end wall and a driven end wall. The disc pump system includes an actuator that is driven a frequency (f) that corresponds to the fundamental resonant frequency of the actuator. The internal sidewall is configured to expand and contract in response to changes in temperature, thereby causing the actuator and cavity to have approximately the same resonant frequencies over a range of operating temperatures. | 01-16-2014 |
20140030112 | VACUUM DEVICE - A vacuum device is provided which forms an autarkic subassembly and includes a vacuum container, a vacuum pump connected to the vacuum container, a vacuum connection for connecting to an external installation, and a control device designed for control of the vacuum pump. The vacuum device serves as a suction device to produce a vacuum in and to suck or draw off gas from this connected installation. The vacuum device is designed as an autarkic (self-sufficient or self-contained) subassembly, which can be connected for example to an electron microscope. | 01-30-2014 |
20140044562 | COMPRESSOR AND CONTROL METHOD THEREOF - A compressor capable of reducing oil foaming and reducing the waiting time taken until the heating of the compressor is completed, and a method of controlling the same, the method of controlling a compressor including sensing temperature of the oil in the compressor, if the temperature of the oil is below a reference temperature, performing a loss operation, in which an amount of heat radiation of the motor part is increased, while operating the motor part at a low speed, and if the temperature of the oil increases to be equal to or higher then reference temperature, performing an efficiency operation by converting an operation of the motor to a normal operation. | 02-13-2014 |
20140294600 | CONTROL DEVICE FOR ELECTRIC PUMP - A control device for an electric pump, the electric pump pumping a cooling medium, the control device includes a controller configured to determine a presence of an abnormality in the electric pump when a temperature of the cooling medium is higher than a threshold value and the electric pump is locked. The threshold value being predetermined as a temperature that is higher than a freezing point of the cooling medium. | 10-02-2014 |
20150017020 | OFFLINE FILTRATION DEVICE AND METHOD - An apparatus, system and method are provided for controlling fluid flow through a vacuum chamber of a dehydration system, the vacuum chamber having a temperature sensing device operative to measure a temperature of a fluid in the vacuum chamber. A temperature difference between a temperature setpoint for the fluid and the measured temperature of the fluid is determined, and fluid is recirculated through the vacuum chamber while the temperature difference is greater than a predetermined temperature difference. While the temperature difference is less than the predetermined temperature difference, the fluid is recirculated through the vacuum chamber for a predetermined time period, and upon the predetermined time period expiring inhibiting recirculation of the fluid through the vacuum chamber. | 01-15-2015 |
20150086383 | AUTOMATIC CONTROL SYSTEM FOR CEILING FAN BASED ON TEMPERATURE DIFFERENTIALS - A fan includes a hub, several fan blades, and a motor that is operable to drive the hub. A motor controller is in communication with the motor, and is configured to select the rate of rotation at which the motor drives the hub. The fan is installed in a place having a floor and a ceiling. An upper temperature sensor is positioned near the ceiling. A lower temperature sensor is positioned near the floor. The temperature sensors communicate with the motor controller, which includes a processor configured to compare substantially contemporaneous temperature readings from the upper and lower temperature sensors. The motor controller is thus configured to automatically control the fan motor to minimize the differences between substantially contemporaneous temperature readings from the upper and lower temperature sensors. The fan system may thus substantially destratify air in an environment, to provide a substantially uniform temperature distribution within the environment. | 03-26-2015 |
20150300348 | Precision Fluid Dispensing Using Peristaltic Roller Control - A precision fluid dispensing system that can be effectively used for accurate fluid dispensing in peristaltic pumps if roller control is used. Peristaltic pumps can be combined with pinch valves allowing a dispense tube to be open while a source tube is blocked. Controlled roller movement is used to move the next roller to the same starting position as the previous roller was on the previous dispense, the dispense pinch valve is closed and the source valve is opened. The system uses roller positioning where the each roller is properly positioned so that each dispense cycle starts in the same position. The precision and accuracy is better than 0.3% total. | 10-22-2015 |
20160003251 | PUMP DEVICE AND METHOD FOR CONTROLLING THE SAME - [Object] To provide a pump device capable of stabilizing a suction flow rate irrespective of an outside air temperature and a control method therefor. | 01-07-2016 |
20160146209 | MOTOR-DRIVEN COMPRESSOR - A motor-driven compressor includes: a compression mechanism; an electric motor that drives the compression mechanism; a driver circuit unit disposed at a position to be cooled by refrigerant drawn by the compression mechanism; a temperature detection unit that detects a temperature of the driver circuit unit; and a motor control device disposed in the driver circuit unit to control the motor. The motor control device stores a predetermined drive pattern corresponding to a temperature characteristic of the driver circuit unit after starting the motor. When the temperature detected by the temperature detection unit at a time of starting the motor is higher than or equal to a predetermined temperature, the motor control device performs a limit drive control according to the predetermined drive pattern regardless of a drive state command to the motor. | 05-26-2016 |