Abstract: A fan controlling system and method is applicable to an electronic device with a fan for adjusting a temperature of the electronic device. The fan controlling system includes a plurality of temperature sensors installed in different regions inside of the electronic device for sensing temperatures around the regions, a mapping table for mapping a plurality of temperature ranges onto a plurality of rotation speeds, and a processing module for comparing the temperatures sensed by the temperature sensors and controlling the fan to rotate according to one of the rotation speeds onto which the mapping table maps one of the temperature ranges within which a highest one of the sensed temperatures is. Therefore, the fan can operate stably and does not generate a loud noise even when its rotation speed is changing, and has a longer lifespan.

Abstract: An implantable drug infusion pump for delivering drug therapy is made more reliable and its performance improved by monitoring drug pump temperature. Monitoring pump temperature can also provide for temperature-related drug therapy modification. A pump temperature sensor is read by the infusion pump's microprocessor. Pump temperature data is stored in pump memory for later access by a remote controller. A simple thermistor or semiconductor temperature sensor can provide fast and reliable temperature monitoring of the pump and/or of a patient by reading the temperature sensor's value and calculating a temperature therefrom.

Abstract: A sealed compressor is provided with a temperature sensor biased against an outer surface of its shell. By biasing the temperature sensor against the shell, good contact between the temperature sensor and the shell is ensured. Also by use of molded material around the senor, the sensor is insulated from ambient air, increasing the accuracy of the sensor.

Abstract: A cooling apparatus and a method for controlling the same are disclosed. The cooling apparatus is adapted to cool a system in which a heat source generating heat is arranged. The cooling apparatus includes an air stream forming unit which cools the heat source to a certain temperature, a sensing unit which includes a supplied-air temperature sensor for sensing a temperature of air supplied into the system, and a discharged-air temperature sensor for sensing a temperature of air discharged out of the system, an altitude detecting unit which detects an altitude of the system, based on the sensed supplied-air temperature and the sensed discharged-air temperature, and a cooling controller which controls the air stream forming unit, based on the detected altitude.

Abstract: 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.

Abstract: An oil mechanical vacuum pump, which is equipped with an electric motor comprises an electronic control device for supplying the electric motor with power. The electronic control device comprises a frequency converter for controlling the excitation frequency Fecc of the voltage signal SU by which the motor is powered as a function of at least one operating parameter of the pump and of at least one threshold value that can be modified depending on the operating conditions of the pump.

Abstract: A hot water system includes cold water pipes, hot water pipes, a water heater, a pump, a pump control unit and a connection valve unit. The pump is used to increase the pressure of the hot water pipes to a preset higher level than the pressure in the cold water pipes. When hot water is needed, the connection valve unit at the user side is opened to connect the cold water pipes and the hot water pipes, and when the cold water pipes and the hot water pipes are connected, the water pressure difference between them will become smaller. When the pressure difference change is detected, the pump control unit will activate the pump to pump the water in the hot water pipes into the cold water pipes, so the water in the pipes starts to circulate, and the water will flow through the water heater and will be heated. When the heated hot water reaches the user, the pump is stopped. After the hot water is being served or when the water temperature drops down, the pump is again put into normal operation.

Abstract: A pump member is cyclically moved to apply an air pressure to a liquid supply source to thereby supply liquid stored therein to a reservoir member. A driving source is driven in accordance with control information to move the pump member. A position sensor senses a position of the pump member. A first storage stores target information indicative of a target driving speed of the driving source. A first calculator obtains drive information indicative of an actual driving speed of the driving source based on the sensed position of the pump member. A second calculator obtains a difference between the target driving speed and the actual driving speed, and obtains correction information for reducing the difference. A corrector corrects the control information with the correction information.

Abstract: A fluid circulation pump (10) with synchronous motor (14), equipped with fluid heating device (40), particularly for washing machines or the like, of the type comprising a rotor (18), equipped with a permanent magnet being rotation-driven by the electromagnetic field generated by a stator (15) equipped with pole shoes (20) with the corresponding windings. This pump (10) has also a magnetic flux sensor (22) of the rotor (18) and a control unit (24) a signal from the magnetic flux sensor (22) at least a typical parameter of said fluid and a comparator this parameter with a reference value and to cut the power supply of the fluid heating device (40) off upon reaching a threshold of the predetermined reference parameter.

Abstract: A liquid hydrocarbon slug-containing vessel for incorporation into a system integrating a low-pressure separator with a vapor recovery process system, and a method for regulating the temperature of a gas to be compressed by a two stage compressor so as to prevent liquification of the gas and to prevent over-heating of the compressor.

Abstract: When an air pump is operated, a brush temperature increase rate stored in an ECU in relation to a discharge pressure of the air pump and a brush temperature is multiplied by a calculation cycle time, and the resultant value is cumulatively added. When the air pump is stopped, a brush temperature decrease rate stored in the ECU in relation to the brush temperature is multiplied by the calculation cycle time, and the resultant value is cumulatively added. Each of the cumulative values read from a map is added to and subtracted from an initial brush temperature value, respectively so as to estimate the brush temperature.

Abstract: A system and method is provided for heating fluid to be pumped by an electrical submersible pumping system. Heat for heating the fluid may be inductively generated by adjusting the power delivered to the motor of the pumping system. In one example, the power adjustment includes supplying the voltage applied to the pump motor to a value less than voltage applied during normal operations. While lowering the voltage the electrical frequency may be varied as well as the electrical waveform.

Abstract: A hermetic compressor comprises a hermetic container, an electric motor installed inside of the hermetic container, a compressing mechanism disposed within the hermetic container and driven by the electric motor, and an oil surface detector disposed to the compressing mechanism for detecting an oil surface of lubricating oil contained inside of the hermetic container. Here, the hermetic compressor is so constructed as to maintain a constant supply of the lubricating oil to the compressing mechanism by way of controlling operation in a manner to keep a surface level of the lubricating oil stable based on a detected result of the oil surface detector.

Abstract: 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.

Abstract: 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.

Abstract: A system and method for a compressor may include an inverter drive connected to the compressor that receives electric power and modulates a speed of the compressor by modulating a frequency of the electric power. A control module connected to the inverter drive monitors compressor power data and compressor speed data from the inverter drive, and calculates a saturated condenser temperature of a refrigeration system associated with the compressor based on the compressor power data and the compressor speed data.

Abstract: A vehicle control apparatus includes an input member; a driving force transmission mechanism that transmits a rotational driving force of the input member to an output member; a mechanical pump that operates by using the rotational driving force of the input member; an electric pump that operates when a rotational speed of the mechanical pump is less than a predetermined operation threshold; an oil pressure control apparatus that performs control operations for the driving force transmission mechanism by supplying operating oil, which is supplied from the mechanical pump and the electric pump, to the driving force transmission mechanism; and a controller that detects a state of the electric pump.

Abstract: 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.

Abstract: 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.

Abstract: 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 V0 for detecting the Curie temperatures to detect a rotor temperature.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A fluid transfer systems described herein. The fluid transfer system generally includes a centrifugal multistage pump, a holding tank for holding the fluid operably connected to the pump body via a first conduit, an inlet for receiving the fluid, wherein the fluid is pressurized to form the pressurized fluid, a manifold for passing the pressurized fluid to a second location and an outlet for receiving fluid operably connected to the manifold.

Abstract: Improvements to a compressor which consists in that, as soon as the measured outlet temperature (TO) reaches a certain hysteresis upper temperature limit (HMAX), the actual rotational speed of the compressor element is either lowered with a speed jump (DS) when the measured rotational speed is situated in the higher speed range close to the maximum rotational speed (SMAX), or is increased with a speed jump (DS) when the measured rotational speed is situated in the lower speed range close to the minimum rotational speed (SMIN).

Abstract: 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.

Abstract: 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.

Abstract: A method is provided for regulating fluid pump pressures by detecting an elevation differential between a fluid flow control device and the distal end of a fluid line in communication with the fluid flow control device. A fluid flow control device, for instance a peritoneal dialysis device, is at a first height, a distal end of a fluid line is at a second height, and a valved outlet, when open, affords communication between the fluid flow control device and the distal end of the fluid line. The elevation differential is correlatable with a pressure measurable during a calibration procedure provided as a part of the methodology.

Abstract: A vacuum pump includes at least one magnetic body located on a circle about a rotor rotational axis and having a Curie temperature within a rotor temperature monitoring range; an inductance detecting portion facing the circle so as to establish a gap between the circle and the inductance detecting portion, for detecting a change of magnetic permeability of the magnetic body as an inductance change when the magnetic body rotates; and a carrier generation device generating a carrier signal for providing in the inductance detecting portion. An A/D conversion device samples a detection signal of the inductance detecting portion synchronously with a carrier generation by the carrier generation device, and converts the detection signal to a digital signal. A determination device determines whether or not a temperature of the rotor exceeds a predetermined temperature, based on the change of the magnetic permeability of the magnetic body.

Abstract: Measurement circuit components are included in an integrated circuit fabricated on a semiconductor substrate. A method is provided for controlling the speed of a cooling fan provided to cool an integrated circuit in which includes the steps of receiving a voltage from a thermal diode, addressing a table of digital temperatures by incrementing the address of the table entries every clock cycle of a circuit clock, converting the addressed data to a second voltage representing temperature, comparing the first voltage to the second voltage, providing a resulting temperature when both the first and second voltages are equal, and adjusting the fan speed accordingly.

Abstract: 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 surface of the pistons. The apparatus also includes an outlet port positioned tangentially with respect to the perimeter of an outlet chamber. The apparatus further includes a non-mechanical pressure sensor and a temperature sensor coupled to a pump control system. For the method of the invention, the microcontroller provides a pulse-width modulation control signal to an output power stage in order to selectively control the power provided to the pump. The control signal is based on the pressure within the pump, the current being provided to the pump, the voltage level of the battery, and the temperature of the pump.

Abstract: A compressor control device includes a driving circuit, for controllably supplying a coil of an electric motor of a compressor. A temperature sensor is thermally coupled to the driving circuit and provides a temperature sensing signal correlated to a temperature in the driving circuit. A control stage, coupled to the driving circuit and to the temperature sensor, selectively prevents the driving circuit from supplying the coil, in response to a minimum temperature increment being detected by the temperature sensor within a pre-determined control time window.

Abstract: A temperature sensing system includes N temperature sensing circuits, each including a diode, that are connected in series, wherein N is an integer greater than one. A control module includes a first terminal that communicates with one of the N temperature sensing circuits, that receives a combined voltage of the N temperature sensing circuits at the first terminal, and that calculates an average temperature of the N temperature sensing circuits based on the combined voltage.

Abstract: A self-contained environmental control and power system (ECAPS) unit including an HVAC system with at least one variable-speed compressor driven by a DC motor, wherein the HVAC system is adapted to condition air and output the conditioned air and a variable-speed diesel engine connected to a generator. The generator is configured to vary in speed so as to output AC power at a variable frequency. The unit includes a rectification assembly which transforms the AC power from the generator and/or external AC power to DC power, and an inverter assembly which transforms the DC power to an export AC power. The ECAPS unit directs the DC power to the DC motor to drive the variable speed compressor and varies, in a controlled manner, at least one parameter of the outputted conditioned air from the HVAC system.

Abstract: A pressure sensor subsystem measures the pressure within a fuel pump and outputs an under-pressure signal when the measured pressure is below a predetermined threshold pressure value. A temperature sensor subsystem measures the temperature within the fuel pump and outputs an over-temperature signal when the measured temperature is above a predetermined threshold temperature value. A timing circuit monitors the pressure sensor subsystem and the temperature sensor subsystem for output of the under-pressure and over-temperature signals and outputs a pump disconnect signal when at least one of the signals is output for a prescribed time duration. A power controller disengages power from the pump upon output of a pump disconnect signal by the timing circuit.

Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.

Abstract: A vacuum pump exhausting gas by rotating a rotor relative to a stator includes a rotor having a ferromagnetic body provided on a rotational axis on, or near, a rotational axis of the end face of a rotational axis direction of a rotational body. The ferromagnetic body's Curie temperature is approximately equal to an allowable temperature of the rotor. A detecting portion disposed opposite the ferromagnetic body is configured to detect a change in magnetic permeability of the ferromagnetic body based upon a change in inductance. A revolution sensor target and an inductance-type revolution sensor are disposed in such a way as to detect both a revolution of the rotor and a change in the magnetic permeability of the ferromagnetic body. A control device halts rotor rotation when a change in magnetic permeability of the ferromagnetic body is detected and/or when a predetermined integrated time is exceeded.

Abstract: A mechanical pump of the present invention is applied to, for example, a screw pump A for exhausting a gas from a processing chamber. The screw pump comprises a gas-exposed region exposed to the gas and an yttria (Y2O3) film formed on the gas-exposed region.

Abstract: A thermostat for sensing an unduly high temperature in a sealed compressor, which is a scroll compressor in the disclosed embodiment, extends through the housing of the sealed compressor into the body of a non-orbiting scroll. Since the thermostat extends through the housing, the wires need not be sealed as they extend from the housing. Still, the thermostat is positioned close to the compression chambers and at a location that will quickly heat when undesirable conditions exist within the sealed compressor. In this manner, the present invention is able to rapidly respond to an undesirable situation to allow a system control to have an indication of the undesired condition.

Abstract: A system for controlling air flow comprises an inlet, a first compressor, a first pressure sensor, a second pressure sensor, a first temperature sensor, and a first controller. The inlet is configured to direct a first stream of air into the system. The first compressor is configured to pull in the first stream of air through the inlet and compress the first stream of air. The first pressure sensor senses a first pressure of the first stream of air prior to compression in the first compressor, the second pressure sensor senses a second pressure of the first stream of air after compression in the first compressor, and the first temperature sensor senses a temperature of the first stream of air after compression in the first compressor. The controller adjusts a speed of the first compressor based upon a comparison between a desired flow rate and a calculated flow rate.

Abstract: The electric motor is equipped with an electronic control, for example in the form of a frequency converter (2) and comprises at least one Seebeck element (6) whose one side is connected to the motor (1) in a heat-conducting manner and whose other side is in heat-conducting connection with a cooling medium. The electrical output power of the Seebeck element (6) is led to the electronic control (2) of the motor (1).

Abstract: A compressor is provided with an oil separator for separating part of the lubricating oil contained in the compressed refrigerant, path arrangement for connecting a separation chamber of the separator and a delivery port of the compressed refrigerant, the path arrangement having a plurality of linear holes with opening ends that open in the outer surface of the housing wall, and screw plugs closing the opening ends except for the one serving as the delivery port, and a safety device built in at least one of the screw plugs, the safety device having a pressure relief valve and/or a temperature sensor.

Abstract: A vacuum pump includes at least one magnetic body located on a circle about a rotor rotational axis and having a Curie temperature within a rotor temperature monitoring range; an inductance detecting portion facing the circle so as to establish a gap between the circle and the inductance detecting portion, for detecting a change of magnetic permeability of the magnetic body as an inductance change when the magnetic body rotates; and a carrier generation device generating a carrier signal for providing in the inductance detecting portion. An A/D conversion device samples a detection signal of the inductance detecting portion synchronously with a carrier generation by the carrier generation device, and converts the detection signal to a digital signal. A determination device determines whether or not a temperature of the rotor exceeds a predetermined temperature, based on the change of the magnetic permeability of the magnetic body.

Abstract: A storage tank for an easily polymerizable compound has acceptance piping and delivery piping with a circulation line directly connecting the acceptance piping to the delivery piping or with circulation lines respectively connecting the acceptance piping to the storage tank and the storage tank to the delivery piping. A method of storing an easily polymerizable compound in the storage tank includes circulating the compound in the storage tank through the circulation line(s), where the compound can be (meth)acrylic acid being produced and/or purified with the temperature of purified (meth)acrylic acid being supplied to or removed from the storage tank being regulated to not be higher than the temperature thereof in the tank. A method of joining pipes for-transporting a corrosive liquid using flanges, bolts, and nuts made of a material having resistance to corrosion by the corrosive liquid.

Abstract: An electro-hydraulic power unit is disclosed that includes a housing filled with hydraulic fluid. A hydraulic power unit is disposed within the housing, the power unit having a mechanical power shaft. Additionally, an electric machine is disposed within the housing adjacent to the hydraulic power unit, the electric machine having a rotor secured to the mechanical power shaft of the hydraulic power unit. Hydraulic fluid within the housing passes over the electric machine, thus cooling the electric machine and providing for improved efficiency and performance.

Abstract: A water circulating system including a water control fixture having an operating valve and a thermostatically controlled bypass valve disposed in the fixture for bypassing water away from the fixture until the water temperature reaches a desired level. When pressurized water from the hot water heater reaches the desired temperature level at the fixture, the bypass valve closes and hot water is made available to the fixture. The bypass valve has a thermal actuator element that is thermally responsive to the temperature of the water. The fixture can have a housing with an interior chamber for operatively receiving the bypass valve. Various passages or channels can be provided to facilitate communication between the bypass valve and the water supply lines. Alternatively, the bypass valve can be positioned in the operating valve, which can include the moveable ball or replaceable cylindrical valving cartridge types of valves.

Abstract: A method for monitoring a fan comprises measuring power usage of the fan, determining a derivative of the measured fan power usage, tracking the derivative over time, and predicting impending fan failure based on the tracked fan power usage derivative.

Abstract: The present recreational vehicle water warming and circulating system uses the heated water in the water heater to heat the on-board water supply when the outside air temperature drops below the freezing point of water. The system includes a holding tank for containing a majority of the on-board water supply, and heated and cold loops that supply heated and cold water to various fixtures in the recreational vehicle. When temperature sensors sense a potentially freezing condition, a control circuit opens one or more solenoid valves to open the one or both loops to return undispensed heated or cold water to the holding tank. The control circuit closes the solenoid valves when the potentially freezing condition is no longer detected by the temperature sensors.

Abstract: 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 exceed a permissible maximum motor output power. On the stator side of the turbomolecular pump (10), temperature sensors (32–38) for measuring the stator temperature are arranged. The control device (42) comprises a maximum output power detecting device (50) that determines the permissible maximum motor output power in dependence on the measured stator temperature. Thus, the permissible maximum motor output power is not set to a constant value but always fixed in dependence on the current, measured stator temperature. Thereby, the capacity of the motor can be fully utilized as long as the measured stator temperature lies below a maximum value.

Abstract: A vent is included into a scroll compressor for protecting a refrigerant system in the event of loss of charge. The vent selectively taps an entrapped compression chamber to a housing chamber which surrounds the motor. In the event of a low charge, the gas in the compression chamber will be at a high temperature, and will heat the motor when the vent opens. The vented heated gas will then actuate a temperature protection device on the motor, causing the motor to stop rotation. In further embodiments, the compression chamber which supplies the tapped fluid is the discharge port.