-
公开(公告)号：US5718565A
公开(公告)日：1998-02-17
申请号：US411826
申请日：1995-04-12
Applicant: Monika Kuhn , Hartmut Kriehn , Rudolf Bahnen
Inventor： Monika Kuhn , Hartmut Kriehn , Rudolf Bahnen
CPC classification number: F04C28/28 , F04B49/10 , F04B2203/0201 , F04B2203/0202 , F04B2203/0212 , F04B2205/01 , F04B2205/05 , F04B2205/065 , F04B2205/07 , F04C2270/86
Abstract: A process for operating a dry-compression vacuum pump with at least one pump chamber and at least one rotor driven by an electric motor, and to a vacuum pump suitable for this operating process. To reduce operational shutdowns for maintenance purposes without any risk to the pump, it is proposed that application-specific phenomena leading to deviations from the normal operating status or their effects be monitored and, after a predetermined deviation quantity has been attained at which operation of the vacuum pump could be adversely affected in future, steps be taken to remove the causes thereof.
Abstract translation: PCT No.PCT / EP93 / 02116 Sec。 371日期：1995年4月12日 102（e）日期1995年4月12日PCT提交1993年8月9日PCT公布。 公开号WO94 / 09275 日期1994年04月28日一种用于操作具有至少一个泵室和由电动机驱动的至少一个转子的干压缩真空泵的工艺，以及适用于该操作过程的真空泵。 为了减少对于维护目的的操作停机而不会对泵造成任何风险，建议监视导致偏离正常操作状态或其影响的应用特定现象，并且在达到预定偏差量之后， 真空泵在将来可能受到不利影响，采取步骤去除其原因。
-
公开(公告)号：US5624237A
公开(公告)日：1997-04-29
申请号：US219939
申请日：1994-03-29
Applicant: Russell E. Prescott , Perrin T. Prescott
Inventor： Russell E. Prescott , Perrin T. Prescott
CPC classification number: E03B11/00 , F04B49/022 , F04B2203/0201
Abstract: A pump overload control assembly is for use with an electric motor driven pump in a water pumping system. The assembly includes a pump overload control device coupled to a fluid responsive switch, thereby forming a pump overload control circuit that interrupts the current flow to the motor in response to an overload of current flow to the motor. The pump overload control device includes a resettable overload protector and indicator mechanism that visually indicates when an overload has occurred and breaks the current flow through the circuit, for example, in response to heat generated from the overload current flow. The fluid responsive switch opens and closes the circuit in response to the fluid being pumped to an external source, for example, when the fluid pressure level falls below or rises above a predetermined pressure level. The pump overload control device further includes a power light, for indicating when power is being supplied to the pump overload control device and a run light, for indicating when current is flowing to the motor. The pump overload control device is mechanically mounted to and supported by the fluid responsive switch.
Abstract translation: 泵过载控制组件用于在抽水系统中的电动机驱动的泵。 组件包括耦合到流体响应开关的泵过载控制装置，从而形成泵过载控制电路，其响应于流向电动机的电流过载而中断到电动机的电流。 泵过载控制装置包括可重置的过载保护器和指示器机构，其可视地指示何时发生过载，并且例如响应于过载电流产生的热而中断通过电路的电流。 流体响应开关响应于被泵送到外部源的流体而打开和关闭电路，例如当流体压力水平低于或高于预定压力水平时。 泵过载控制装置还包括电源灯，用于指示何时向泵过载控制装置供电，以及行驶灯，用于指示电流何时流向电动机。 泵过载控制装置机械地安装到流体响应开关并由流体响应开关支撑。
-
公开(公告)号：US5545012A
公开(公告)日：1996-08-13
申请号：US204193
申请日：1994-01-27
Applicant: William N. Anastos , Stephen B. Boyd
Inventor： William N. Anastos , Stephen B. Boyd
CPC classification number: H02H9/001 , F04B49/02 , F04B49/06 , F04D15/0236 , H02H7/08 , F04B2203/0201 , F04B2205/09
Abstract: A soft-start pump controller system for controlling a pump motor includes a switching device for supplying power to the pump motor; a periodic duty cycle generator for periodically actuating the switching device at a fraction of the full duty cycle to operate the pump at a reduced, quieter level; a sensor for sensing the current drawn by the pump motor; a reference circuit; and a liquid detector for detecting the presence of the liquid to be pumped, responsive to the sensor and the reference circuit, for overriding the periodic duty cycle generator and actuating the switching device to operate the pump motor continuously at full power when the motor current exceeds a predetermined level indicating liquid is present.
Abstract translation: PCT No.PCT / US93 / 09415 Sec。 371日期1994年1月27日 102（e）日期1994年1月27日PCT提交1993年10月4日PCT公布。 No.W095 / 09981 PCT出版物 日期1995年04月13日用于控制泵电动机的软起动泵控制器系统包括用于向泵电动机供电的开关装置; 周期性占空比发生器，用于以完全占空比的一小部分周期性地致动开关装置，以在减小的更安静的水平上操作泵; 传感器，用于感测由泵电动机吸出的电流; 参考电路; 以及液体检测器，用于响应于传感器和参考电路检测待泵送的液体的存在，用于超越周期性占空比发生器并致动开关装置，以在电动机电流超过时以全功率连续运行泵电动机 存在指示液体的预定水平。
-
公开(公告)号：US5518373A
公开(公告)日：1996-05-21
申请号：US197274
申请日：1994-02-16
Applicant: Nobukazu Takagi , Kiyohiro Harada , Sakae Mashio , Akihito Uetake , Osamu Shinkawa , Takeshi Fujihisa
Inventor： Nobukazu Takagi , Kiyohiro Harada , Sakae Mashio , Akihito Uetake , Osamu Shinkawa , Takeshi Fujihisa
CPC classification number: F04C28/06 , F04B49/06 , F04B49/103 , F04C28/28 , F04C29/0085 , H02P6/21 , F04B2203/0201 , F04B2203/0204 , F04C18/0215
Abstract: A compressor start-up controller includes a compressing section (37-39) for compressing a refrigerant; a motor (25) connected to the compressing section for rotating the compressing section; a drive circuit (10) connected to the motor for driving the motor; a rotation detecting device (1) connected to the drive circuit for detecting whether the motor is normally rotating; a control unit (8) connected to the drive circuit for operating the motor in a step mode at a very slow rotation at its start-up for effecting electricity conducting control to gradually increase or decrease commutating current at a very slow speed during the step mode operation at the motor start-up.
Abstract translation: 压缩机启动控制器包括用于压缩制冷剂的压缩部分（37-39）; 连接到所述压缩部分以使所述压缩部分旋转的马达（25）; 驱动电路（10），连接到电动机，用于驱动电动机; 连接到驱动电路的旋转检测装置（1），用于检测电动机是否正常旋转; 连接到所述驱动电路的控制单元（8），用于在其启动时以非常慢的旋转以步进模式操作所述电动机，以进行导电控制，以在所述步进模式期间以非常慢的速度逐渐增加或减少换向电流 在电机起动时运行。
-
公开(公告)号：US5425623A
公开(公告)日：1995-06-20
申请号：US35464
申请日：1993-03-23
Applicant: Robert K. London , David G. Loucks
Inventor： Robert K. London , David G. Loucks
CPC classification number: F04B47/02 , F04B49/065 , F04B2203/0201 , F04B2205/09 , F04B2205/14
Abstract: An electric contactor for the motor of a reciprocating pump such as an oil well walking beam pump, and other cyclic loads, uses the power drawn by the load to determine the phase angle of the pump without the need for a separate phase signalling sensor. The contactor couples the electric pump motor to a power line, and has a power sensor and peak detector. The power sensor can be responsive to RMS AC power or simply to current amplitude and polarity. The motor passes through a minimum power at the extreme top and bottom of a pump stroke, and the phase position at the top of the stroke is preferably detected by sensing for the power reversal that occurs as the momentum of the pump causes regeneration by the motor. The contactor can have overcurrent and/or undervoltage protection features, can include contacts for rearranging the motor windings to vary pump operation, and can report the phase to a pump control and monitoring system, whereby process variables are assessed as a function of phase.
Abstract translation: 用于诸如油井步进梁泵等往复泵的马达的电接触器使用由负载抽取的功率来确定泵的相位角，而不需要单独的相位信号传感器。 接触器将电动泵电机连接到电力线，并具有功率传感器和峰值检测器。 功率传感器可以响应RMS交流电源或简单到当前的幅度和极性。 电动机通过泵行程的最上部和底部的最小功率，并且优选地通过感测为泵的动量引起电动机再次发生的功率反转来检测行程顶部的相位位置 。 接触器可以具有过电流和/或欠压保护功能，可以包括用于重新排列电机绕组以改变泵运行的触点，并且可以将相位报告给泵控制和监控系统，由此将过程变量作为相位的函数进行评估。
-
Patent Agency Ranking
公开(公告)号：US5141402A
公开(公告)日：1992-08-25
申请号：US647609
申请日：1991-01-29
Applicant: James V. Bloomquist , Albin J. Niemic
Inventor： James V. Bloomquist , Albin J. Niemic
CPC classification number: B29C45/82 , F04B49/06 , F04B49/065 , H02K17/30 , F04B2201/0403 , F04B2201/0805 , F04B2201/12051 , F04B2203/0201 , F04B2205/05
Abstract: An electric-motor hydraulic pump includes a housing having a stationary internal shaft. A pair of cylinder blocks are rotatably carried by the shaft within the housing, and an array of pistons are slidably disposed with each cylinder block. A yoke plate is mounted within the housing and engages the pistons for determining displacement of the pistons within the cylinder blocks. Fluid inlet and outlet ports are provided in the housing and are coupled to the cylinder blocks. An induction motor includes a rotor carried by the cylinder block for corotation therewith, and a stator mounted within the housing surrounding the rotor. An electronic controller for controlling outlet fluid pressure and flow from the pump includes a plurality of sensors mounted on the housing for sensing operating characteristics of the pump and motor to provide electronic sensor signals as functions thereof. Control electronics are responsive to the sensor signals for controlling fluid pressure and flow from the pump by varying effective displacement of the pump, and by varying the electrical power (current and frequency) applied to the motor.
Abstract translation: 电动机液压泵包括具有固定内部轴的壳体。 一对气缸体由轴可旋转地支承在壳体内，并且活塞阵列可滑动地布置有每个气缸体。 轭板安装在壳体内并与活塞接合，以确定活塞在气缸体内的位移。 流体入口和出口设置在壳体中并且联接到气缸体。 感应电动机包括由气缸体承载的用于与其共旋转的转子和安装在围绕转子的壳体内的定子。 用于控制出口流体压力和来自泵的流量的电子控制器包括安装在壳体上的多个传感器，用于感测泵和马达的操作特性，以提供作为其功能的电子传感器信号。 控制电子设备响应于传感器信号，通过改变泵的有效位移以及通过改变施加到电动机的电功率（电流和频率）来控制流体压力和来自泵的流量。
-
公开(公告)号：US5015153A
公开(公告)日：1991-05-14
申请号：US379650
申请日：1989-07-14
Applicant: Nichika Uesugi , Shingo Ikawa , Takayuki Kambe
Inventor： Nichika Uesugi , Shingo Ikawa , Takayuki Kambe
CPC classification number: F04B51/00 , F04B49/06 , F04B2201/1208 , F04B2203/0201 , F04B2203/0202 , F04B2207/03
Abstract: The load torque of a compressor for circulating refrigerant in a refrigerating cycle changes with the rotational position of the shaft of the compressor, and the phase difference between the primary current and voltage of an induction motor for driving the compressor changes with the load torque. Taking the above facts into consideration, in turning off the compressor driven by the induction motor, which is powered by a fixed frequency AC power source, the shaft position of the compressor is detected in accordance with the phase difference, and the current of the motor is turned off at the timing of a particular phase difference when the load torque becomes minimum, thus reducing vibration when the compressor is stopped.
-
公开(公告)号：US12085071B2
公开(公告)日：2024-09-10
申请号：US17943320
申请日：2022-09-13
Applicant: MICROJET TECHNOLOGY CO., LTD.
Inventor： Hao-Jan Mou , Ching-Sung Lin , Yung-Chang Chen , Yung-Lung Han , Chi-Feng Huang
CPC classification number: F04B49/065 , F04B17/03 , H03K3/017 , F04B2203/0201 , F04B2203/0202
Abstract: A driving circuit of fluid pump module includes a microprocessor, a primary boost circuit, and a pump driving circuit is provided. The microprocessor receives an output signal with a large-width variable rectangular waveform, a driving voltage, a first detection current-feedback signal, and a second detection current-feedback signal. The primary boost circuit converts an inputted driving voltage into a direct current with a certain high voltage. The pump driving circuit receives the certain high voltage and is connected with the microprocessor to receive the voltage control signal and the pulse-width modulation (PWM) signal. The secondary boost circuit receives the certain high voltage to boost the certain high voltage into a working voltage for the fluid pump. The operation driving circuit receives the working voltage and provides the pulse-width modulation signal for the fluid pump through the second detection current-feedback signal.
-
公开(公告)号：US12049879B2
公开(公告)日：2024-07-30
申请号：US17876904
申请日：2022-07-29
Applicant: Active Products Inc.
Inventor： James Hou , Jiang-yong Gu , Ming Liu , Man Chung Kenneth Lam
CPC classification number: F04B1/182 , F04B1/12 , F04B1/14 , F04B1/148 , F04B1/28 , F04B17/05 , F04B2203/0201 , F04B2203/0202 , F04B2203/0604
Abstract: There is provided a wobble plate piston water pump for use in a pressure washer and driven by a driving source, the water pump includes a pump body, a wobble plate, four or more pistons and a water passage defined by a water inlet and a water outlet. The driving source being electric powered and having a power consumption of less than or equal to a 15 ampere draw at 120 volts or 220 volts or the driving source being gas powered and having an engine displacement of less than or equal to 250 cubic centimetres.
-
100.发明授权公开(公告)号：US11952997B2
公开(公告)日：2024-04-09
申请号：US17309598
申请日：2019-12-10
Applicant: CAREL INDUSTRIES S.p.A.
Inventor： Mattia Morandin
CPC classification number: F04B49/065 , F04B35/04 , F04B2203/0201 , F04B2203/0202 , F04B2203/0204
Abstract: An operating method is used for a compressor of a refrigerating machine, where the compressor includes an electric motor- and a power supply device configured to modulate a supply voltage and/or current and/or frequency for driving an electric motor. The method includes (a) setting a stator resistance calibration value and at least one threshold value for a control parameter, the threshold value being correlated to the calibration value; (b) injecting, continuously during operation of the electric motor, a disturbance signal into the electric motor (c) detecting a resulting voltage signal and a resulting current signal, corresponding to the perturbation signal; (d) associating with the control parameter a value calculated as a function of the resulting voltage signal and a resulting current signal; and (e) regulating or interrupting the supply voltage and/or current and/or frequency depending on the control parameter with respect to the at least one threshold value.
-
-
-
-
-
-
-
-
-
Search Results
281
records
(took 0.013 seconds)
