| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Motor control device of the compressor | JP16496383 | 1983-09-09 | JPH0758069B2 | 1995-06-21 | SUDO MASAYASU; UNEYAMA YOSHIHISA |
| 42 | SCREW COMPRESSOR DRIVE CONTROL | US15676220 | 2017-08-14 | US20170343261A1 | 2017-11-30 | David M. FOYE; Nathan T. WEST; Dennis M. BEEKMAN; John R. SAULS |
| An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented. | ||||||
| 43 | Method for rotary positive displacement pump protection | US13859899 | 2013-04-10 | US09745979B2 | 2017-08-29 | Anthony E. Stavale; Robert Semidey |
| Techniques are provided for protecting a rotary positive displacement pump, e.g., using a signal processor that receives signaling containing information about power, torque, speed, viscosity and specific gravity related to the operation of a pump; and determines whether to enter an enhanced pump protection mode for the rotary positive displacement pump based at least partly on a relationship between an actual corrected tune ratio and a tuned ratio set point (Tune Ratio SP). The signal processor may determine if the actual corrected tune ratio is less than or equal to the actual corrected tune ratio set point (Tune Ratio SP), and if so, then to enter the enhanced pump protection mode, else continues to use a basic pump protection mode, and also determines the actual corrected tune ratio based upon a ratio of an actual corrected power (PAcorr) divided by a tuned corrected power (PTcorr) at a specific operating speed. | ||||||
| 44 | Rotational pump and fuel vapor leakage detection device having the same | US14568607 | 2014-12-12 | US09464600B2 | 2016-10-11 | Taiki Yasuzaka; Yasuo Kato |
| A pump casing has two external communication holes communicating with an outside. A partition member partitioning an interior of the pump casing into a first space and a second space. The first space communicates with the two external communication holes. The partition member have two internal communication holes communicating the first space with the second space. A first rotor member is rotatably accommodated in the first space. A second rotor member is rotatably accommodated in the second space. A torque switching unit is configured to switch between transmission of a running torque selectively to the first rotor member and transmission of the running torque to both the first rotor member and the second rotor member. | ||||||
| 45 | Compressor Having A Control And Diagnostic Module | US15096196 | 2016-04-11 | US20160226416A1 | 2016-08-04 | Hung M. PHAM; Fadi M. ALSALEEM |
| A system and method includes a power supply that generates an alternating current power for powering a compressor with a capacitor, a voltage sensor that measures voltage values based on the alternating current power, a current sensor that measures current values based on the alternating current power, and a controller. The controller communicates with the voltage sensor and the current sensor, determines a power factor value based on at least one of the voltage values and at least one of the current values, and determines a fault in the capacitor based on the power factor and at least one of the current values. | ||||||
| 46 | METHOD FOR OPTIMIZING THE CONTROL OF AN ELECTRIC DRIVE | US14593589 | 2015-01-09 | US20150198160A1 | 2015-07-16 | Herr Uwe Poschenrieder; Herr Mario Lenz |
| A method for optimizing the regulation of an electric drive for machinery with specific torque behavior which periodically fluctuates significantly between extreme values specific to working points includes the step of implementing a characteristic field. A drive motor is provided for the electric drive with a permanent magnet rotor and a stator with a stator winding. The stator winding is energized with a three-phase alternating current across an inverter. Changes in the number of revolutions of the drive motor and the angle error are minimized by a correction of this phase current and a correction of the angular velocity. The characteristic field for the torque variation which is specific to the machine is implemented in the regulation algorithm of the inverter. | ||||||
| 47 | ROTATIONAL PUMP AND FUEL VAPOR LEAKAGE DETECTION DEVICE HAVING THE SAME | US14568607 | 2014-12-12 | US20150167598A1 | 2015-06-18 | Taiki YASUZAKA; Yasuo KATO |
| A pump casing has two external communication holes communicating with an outside. A partition member partitioning an interior of the pump casing into a first space and a second space. The first space communicates with the two external communication holes. The partition member have two internal communication holes communicating the first space with the second space. A first rotor member is rotatably accommodated in the first space. A second rotor member is rotatably accommodated in the second space. A torque switching unit is configured to switch between transmission of a running torque selectively to the first rotor member and transmission of the running torque to both the first rotor member and the second rotor member. | ||||||
| 48 | Tunable Progressive Cavity Pump | US14486316 | 2014-09-15 | US20150078943A1 | 2015-03-19 | Shawn N. Gunter; Kenneth T. Bebak; Randall L. Maxwell; Thomas N. Hendryx |
| A well pump assembly includes a progressive cavity pump having a stator with an elastomeric inner portion. The stator has an axial cavity with internal lobes; a rotor with external lobes positioned within the axial cavity. An effector selectively increases and decreases a stiffness of the stator by changing a cross sectional area of the axial cavity in the stator. The effector may include a reservoir within the stator containing a fluid. A reservoir pump selectively increases and decreases a pressure of the fluid in the reservoir in response to sensing the flow rate from the progressive cavity pump and the torque of the motor. Alternately, the reservoir may contain a magneto-rheological fluid (MR fluid). A coil generates an electromagnetic field within the MR fluid to selectively increase and decrease a viscosity of the MR fluid. | ||||||
| 49 | Screw compressor drive control | US13759728 | 2013-02-05 | US08875530B2 | 2014-11-04 | David M. Foye; Nathan T. West; Dennis M. Beekman; John R. Sauls |
| An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented. | ||||||
| 50 | METHOD OF DETERMINING PUMP FLOW IN ROTARY POSITIVE DISPLACEMENT PUMPS | US13859936 | 2013-04-10 | US20140135999A1 | 2014-05-15 | Anthony E. STAVALE |
| Techniques are provided for tuning a rotary positive displacement pump. The techniques include apparatus featuring a signal processor configured to the present invention may take the form of apparatus comprising a signal processor that may be configured to receive signaling containing information about actual pump performance data related to the operation of a rotary positive displacement pump; and determine corrected published pump performance data to operate the rotary positive displacement pump by compensating published pump performance data based at least partly on the actual pump performance data. The corrected published pump performance data may include a corrected published rated power, flow and slip factor, and the actual pump performance data contains information about actual power, specific gravity and viscosity related to the operation of the rotary positive displacement pump and received from a pump controller or controlling device, including a variable frequency drive. | ||||||
| 51 | Fluid Machine | US13636987 | 2011-03-22 | US20130017114A1 | 2013-01-17 | Shinji Nakamura; Hirofumi Wada |
| A fluid machine (14, 102, 108) includes a plurality of fluid units (16, 20) each having a rotator (40, 66) and configured to let in and out a working fluid as the rotator (40, 66) rotates, and a drive shaft (72) to which the rotators (40, 66) of the fluid units (16, 20) are coupled, wherein an Oldham coupling (85) is arranged at a shaft section of the drive shaft (72) located between the rotators (40, 66). | ||||||
| 52 | Motor control device and compressor | US12186812 | 2008-08-06 | US08084977B2 | 2011-12-27 | Eiichiro Hashimoto |
| A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque current value such that the motor speed is made to follow a specified motor speed value fed from outside; a resonance filter producing a corrected torque current value by receiving a control value that varies with variations in the load torque and emphasizing a periodic variation component of the control value; a torque current corrector producing a specified superimposed torque current value by superimposing the corrected torque current value on the specified torque current value; and an adjusting portion adjusting, based on the specified superimposed torque current value, the phase of the corrected torque value by controlling the resonance filter. The vector control is performed according to the specified superimposed torque current value. | ||||||
| 53 | SCREW COMPRESSOR DRIVE CONTROL | US12544582 | 2009-08-20 | US20110041533A1 | 2011-02-24 | David M. Foye; Nathan T. West; Dennis M. Beekman; John R. Sauls |
| An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented. | ||||||
| 54 | Vehicle Transmission with Fluid Pump Having a Recirculation Circuit | US12185079 | 2008-08-02 | US20100028172A1 | 2010-02-04 | Brad Heuver |
| The present disclosure relates to a vehicle transmission with fluid pump having a recirculation circuit. The recirculation circuit is configured to direct fluid from an outlet of the pump to an inlet during pump cycling. A method of manufacturing a fluid pump for use in a vehicle transmission is also disclosed. | ||||||
| 55 | Oil pump systems and methods for preventing torque overload in motors of oil pump systems | US11759274 | 2007-06-07 | US07508149B2 | 2009-03-24 | Nitinkumar R. Patel |
| Methods and apparatus are provided for preventing a voltage overload condition of an alternating current (“AC”) motor electrically coupled to an inverter. In an embodiment, the system includes an oil pump, a motor in communication with the oil pump, an inverter module in electrical communication with the motor, the inverter module configured to generate a speed command, and a controller module. The controller module is in communication with the inverter module and the motor and is configured to determine an error, based, in part, on an estimated torque value of the motor and a predetermined maximum available torque value, to convert the error into a first value, to limit the first value between a negative value and zero, and to add the first value to the speed command from the inverter to thereby generate a final speed command for the motor. | ||||||
| 56 | System for controlling compressor of cooling system and method for controlling the same | US10556318 | 2004-04-27 | US20070180841A1 | 2007-08-09 | Ji Young Bae; Kyoung Park; Chang Yong Jang |
| Disclosed is a system for controlling a compressor of a cooling system. The system includes: the compressor having a driving shaft that is rotatable clockwise and counterclockwise and operated by a power of a motor outputting different torque characteristics depending on the rotational directions of the driving shaft; a selector for selecting an output torque characteristic of the motor; a switching part for turning on or off the motor; and a control unit for controlling the selector to drive the compressor in a torque characteristic suitable for an object to be cooled. In an aspect of the invention, there is provided a method for controlling an operation of a compressor in a cooling system. The method includes the steps of: (a) an initial starting step of starting the compressor equipped with a motor different torque characteristics depending on rotary directions of a driving shaft at a first torque characteristic; (b) determining the operation torque characteristic of the motor; (c) when it is determined that the motor operates at the first torque characteristic in consequence of performing the step (b), if a first condition is met during an operation of the compressor, stopping the compressor, (d) determining whether it is suitable to continuously operate the motor at the first torque characteristic in a state that the compressor is stopped, and if it is determined that it is suitable, maintaining the operation torque characteristic of the motor, while if it is determined that it is not suitable, converting the operation torque characteristic of the motor from the first torque characteristic to a second torque characteristic, and if a second condition is met, operating the compressor. | ||||||
| 57 | Vacuum line and a method of monitoring such a line | US11477361 | 2006-06-30 | US20070012099A1 | 2007-01-18 | Nicolas Becourt |
| The present invention provides a vacuum line for pumping gas from a process chamber, the vacuum line comprising at least: a pump unit comprising a pump body and a motor; a gas exhaust system; first measurement means for measuring a functional parameter relating to the motor; second measurement means for measuring a functional parameter relating to the exhaust system; and prediction means for calculating the duration of use of the vacuum line. The prediction means calculate the duration of utilization of the vacuum line prior to failure of the pump unit from the measurement of a functional parameter relating to the motor provided by the first means and the measurement of a functional parameter relating to the exhaust system provided by the second means. In a variant, the vacuum line further includes third measurement means for measuring a functional parameter relating to the pump body, and the prediction means calculate the duration of use while taking account of the measurement of this parameter. | ||||||
| 58 | Electric compressor and control method therefor | US10197129 | 2002-07-17 | US20030017054A1 | 2003-01-23 | Yasuharu Odachi; Kazuya Kimura; Shoichi Ieoka |
| When an electric compressor is activated, initial current data is selected by a selector, and a motor is driven with the torque corresponding to the initial current data. When the motor is driven by a null turn, the selector selects current difference data. The current difference data corresponds to an instructed speed. After the switch of the selector, the motor is driven to rotate at the instructed speed. | ||||||
| 59 | Torque control apparatus for enclosed compressors | US641675 | 1984-08-17 | US4604036A | 1986-08-05 | Masatsune Sutou; Yoshihisa Uneyama |
| A torque control apparatus for enclosed compressors wherein a load torque, applied to an enclosed compressor, is detected by a position detector provided on the rotating portion of the compressor and a temperature detector provided in a refrigeration cycle. A voltage or current supplied to the compressor is controlled in accordance with the load torque to control the motor output torque of the compressor. | ||||||
| 60 | Scroll compressor with partial unloader for start-up | EP11185128.3 | 2011-10-13 | EP2444670A3 | 2016-05-11 | Tang, Benjamin; Rivet, Ralph Robert; Leclercq, Ralph |
A scroll compressor with a check valve (22-12) interposed between a balance chamber (22-8) and a discharge chamber (22-14) to allow balance chamber pressure to remain low during start-up of the compressor. Low balance chamber pressure allows an orbiting scroll to remain undamped to a fixed scroll thereby reducing torque required to initiate rotation of the orbiting scroll.
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