公开(公告)号：US20160108905A1

公开(公告)日：2016-04-21

申请号：US14518250

申请日：2014-10-20

申请人： General Electric Company

发明人： Eric K. Watson ,  Richard Dana Brooke ,  Timothy Neal Johnson ,  Meher Prasadu Kollipara

IPC分类号： F04B51/00 ,  G01R31/34 ,  G01R25/00

CPC分类号： F04B51/00 ,  F04B49/065 ,  F04B2201/0201 ,  F04B2203/0201 ,  F04C18/356 ,  F04C23/02 ,  F04C28/28 ,  F04C29/0085 ,  F04C2270/075 ,  G01R25/00 ,  G01R25/005 ,  G01R31/34

摘要： Compressors and methods for determining optimal parking positions for compressor pistons are provided. A method includes performing a current value evaluation for an initial time during operation of a motor of the compressor. Performing the current value evaluation includes measuring a motor current value at the time and comparing the motor current value to an existing optimal parking current value. Performing the current value evaluation further includes modifying the existing optimal parking current value to the motor current value when the motor current value exceeds or is equal to the existing optimal parking current value.

摘要翻译： 提供了用于确定压缩机活塞的最佳停车位置的压缩机和方法。 一种方法包括在压缩机的电动机的操作期间执行初始时间的当前值评估。 执行当前值评估包括测量当前的电动机电流值，并将电动机电流值与现有的最佳停车电流值进行比较。 执行当前值评估还包括当电动机电流值超过或等于现有最佳停车电流值时，将现有最佳停车电流值修改为电动机电流值。

公开(公告)号：US20180058454A1

公开(公告)日：2018-03-01

申请号：US15558415

申请日：2016-02-16

申请人： MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.

发明人： Takashi NAKAGAMI ,  Takayuki TAKASHIGE

IPC分类号： F04C28/28 ,  F04C28/08 ,  F04C29/00 ,  H02P29/68

CPC分类号： F04C28/28 ,  F04B35/04 ,  F04B49/10 ,  F04B2203/0205 ,  F04C18/0215 ,  F04C23/001 ,  F04C28/08 ,  F04C29/0085 ,  F04C29/045 ,  F04C2240/40 ,  F04C2240/81 ,  F04C2270/075 ,  F04C2270/195 ,  F04C2270/78 ,  H02P29/68

摘要： This electric compressor includes a compressor which rotates around an axis to compress a fluid, a motor which rotatably drives the compressor around the axis, and a control unit having a first component and a second component and controlling current supply to the motor during driving using the first component and the second component. An allowable current when the first component and the second component are exposed to the same temperature is set to be smaller in the second component than in the first component. The second component is disposed at a place in which cooling capability is greater than that of the first component so that allowable power of the second component at rated use is set to be greater than an allowable power of the first component. This electric compressor includes a temperature sensor which detects the temperature of the first component and a calculation unit which outputs an alarm signal when the temperature detected by the temperature sensor and a current flowing in the first component satisfy a predetermined condition.

公开(公告)号：US20150240814A1

公开(公告)日：2015-08-27

申请号：US14590285

申请日：2015-01-06

申请人： Tecumseh Products Company

发明人： Roger D. Snyder ,  Anthony S. Carstensen ,  Joseph M. LaRocca ,  Robert L. Terry

IPC分类号： F04C18/34 ,  F17C5/06 ,  F04C29/00 ,  F04C28/08 ,  F04C29/04

CPC分类号： F04C18/34 ,  F01C21/10 ,  F04C18/356 ,  F04C23/008 ,  F04C28/08 ,  F04C28/28 ,  F04C29/0085 ,  F04C29/045 ,  F04C2210/10 ,  F04C2240/30 ,  F04C2270/075 ,  F04C2270/195 ,  F04C2270/86 ,  F17C5/06 ,  F17C13/08 ,  F17C13/082 ,  F17C2221/033 ,  F17C2223/0123 ,  F17C2223/036 ,  F17C2225/0123 ,  F17C2225/036 ,  F17C2227/0164 ,  F17C2265/065 ,  Y10T137/86035

摘要： A compact compressor is provided which can be used for production of very high-pressure end products using a multi-stage compression process. In one exemplary application, the compressor can be used for each stage of the multi-stage compression process used in production of compressed natural gas (CNG), in which low-pressure natural gas (NG) is compressed to less than 1 percent of its volume at standard atmospheric pressure (e.g., to 2,900-3,600 psi or 20-25 MPa). The compressor includes spark-avoidance, heat-mitigation and oil separation systems to safely and effectively produce CNG from NG.

摘要翻译： 提供了一种紧凑型压缩机，可用于使用多级压缩工艺生产非常高压的最终产品。 在一个示例性应用中，压缩机可以用于生产压缩天然气（CNG）中使用的多级压缩过程的每个阶段，其中低压天然气（NG）被压缩到其低于1％的压缩天然气 体积在标准大气压（例如，为2900-3,600psi或20-25MPa）。 压缩机包括避免火花，减轻热量和油分离系统，从NG安全有效地生产CNG。

公开(公告)号：US20170096049A1

公开(公告)日：2017-04-06

申请号：US15285599

申请日：2016-10-05

申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

发明人： Takashi KAWASHIMA ,  Yoshiki NAGATA

IPC分类号： B60H1/32 ,  F04C29/00 ,  H02P27/08 ,  F04C18/02

CPC分类号： B60H1/3222 ,  B60H1/3223 ,  B60H2001/3238 ,  B60H2001/3272 ,  B60H2001/3292 ,  F04C18/0207 ,  F04C18/0215 ,  F04C28/08 ,  F04C29/0085 ,  F04C2240/40 ,  F04C2240/808 ,  F04C2270/075 ,  F04C2270/605 ,  F04C2270/80 ,  H02P21/26 ,  H02P27/08

摘要： When the magnitude of a motor current Iu is smaller than a threshold value at a timing when a polarity of the motor current Iu is expected to be reversed after the elapse of one control cycle, a control device sets a correction amount of a width of a pulse generated by PWM control at a correction amount +α. When the magnitude of the motor current is greater than the threshold value at the timing, the control device sets the correction amount of the width of the pulse generated by the PWM control at zero or a value β smaller than the correction amount +α. As a result, an error of a dead time period in inverter control can be reduced.

公开(公告)号：US20030123990A1

公开(公告)日：2003-07-03

申请号：US10300064

申请日：2002-11-20

发明人： Shinya Yamamoto ,  Masahiro Kawaguchi ,  Osamu Uchiyama

IPC分类号： F04B049/06

CPC分类号： F04C28/02 ,  F04C18/126 ,  F04C25/02 ,  F04C28/08 ,  F04C2240/403 ,  F04C2270/07 ,  F04C2270/075

摘要： A vacuum pump has an alternating current motor, a rotary shaft and a gas transferring body. The alternating current motor runs at a certain speed based on frequency of alternating current and is sufficiently supplied with the alternating current. Gas is transferred from a certain space by the gas transferring body driven by the alternating current motor through the rotary shaft. A method for controlling a vacuum pump includes keeping a rotational speed of the alternating current motor at a second predetermined rotational speed, detecting a value of the alternating current to the alternating current motor, keeping the rotational speed at a first predetermined rotational speed that is higher than the second predetermined rotational speed when the detected alternating current value exceeds a first predetermined value, and keeping the rotational speed at the second predetermined rotational speed when the detected alternating current value becomes equal to a second predetermined value.

摘要翻译： 真空泵具有交流电动机，旋转轴和气体输送体。 交流电动机基于交流电的频率以一定速度运行，并且充分地提供交流电。 气体通过由交流电动机驱动的气体传递体通过旋转轴从一定的空间传递。 用于控制真空泵的方法包括：将交流电动机的转速保持在第二预定转速，检测到交流电动机的交流电流值，将转速保持在较高的第一预定转速 当检测到的交流电流值超过第一预定值时，将第二预定旋转速度保持在第二预定旋转速度，并且当检测到的交流电流值等于第二预定值时，将转速保持在第二预定转速。

公开(公告)号：US20190219044A1

公开(公告)日：2019-07-18

申请号：US16327690

申请日：2017-08-22

申请人： Sunrise Global Marketing

发明人： Greg ARNOLD ,  Kevin GILLIS ,  Ken GRIFFIN

IPC分类号： F04B35/04 ,  F04B35/06 ,  F04B41/02 ,  F04B49/06 ,  F04B49/20 ,  F04C28/06 ,  F04C29/00 ,  H02J7/35 ,  H02J9/06

CPC分类号： H02K5/225 ,  F04B35/04 ,  F04B35/06 ,  F04B41/02 ,  F04B49/06 ,  F04B49/065 ,  F04B49/20 ,  F04B2203/0212 ,  F04C28/06 ,  F04C29/0085 ,  F04C2210/1005 ,  F04C2270/075 ,  H01R13/35 ,  H01R13/6683 ,  H01R27/00 ,  H01R31/06 ,  H01R2103/00 ,  H01R2201/10 ,  H02J7/35 ,  H02J9/06 ,  H02K11/27

摘要： An air compressor (10) includes an air pump (34) with a pump inlet (34a) for receiving air to be pressurized and a pump outlet (34b). An air tank (14) includes a tank inlet (14a) coupled with the pump outlet (34b) for receiving pressurized air from the air pump (34), and a tank outlet (14b) for directing pressurized air from a tank outlet (14b) to at least one pneumatic device (24). A brushless DC motor (36) includes a rotatable output (36a) coupled with the air pump (34) for operating the air pump (34) to pressurize air. A control (42) is electrically coupled to the brushless DC motor (36). The control (42) changes the level of electric current drawn by the brushless DC motor (36) to thereby change the rate of rotation of the rotatable output (36a) and/or the pump performance level.

公开(公告)号：US20100205952A1

公开(公告)日：2010-08-19

申请号：US12615572

申请日：2009-11-10

申请人： Shigeaki Yamamuro ,  Makoto Tada ,  Satoshi Nonaka

发明人： Shigeaki Yamamuro ,  Makoto Tada ,  Satoshi Nonaka

IPC分类号： F15B11/16 ,  F04C14/18

CPC分类号： B62D5/062 ,  B62D5/065 ,  F04C2/3442 ,  F04C14/226 ,  F04C2270/07 ,  F04C2270/075

摘要： A variable displacement pump including a drive shaft, a cam ring eccentrically moveable with respect to an axis of the drive shaft, and a solenoid drivingly controlled on the basis of variation in electric current amount to be supplied to the solenoid which is controlled in accordance with an operating condition of a vehicle. The solenoid is configured such that a rate of change in the specific discharge amount relative to the electric current amount to be supplied to the solenoid under a condition that the specific discharge amount is smaller is reduced as compared to a rate of change in the specific discharge amount relative to the electric current amount to be supplied to the solenoid under a condition that the specific discharge amount is larger.

摘要翻译： 一种可变排量泵，包括驱动轴，相对于驱动轴的轴线可偏心运动的凸轮环，以及基于要供应给螺线管的电流量的变化而被驱动的螺线管，该螺线管根据 车辆的运行状况。 螺线管构成为，在特定排出量较小的条件下，相对于向螺线管供给的电流量的特定排出量的变化率与比排量的变化率相比降低 相对于在比放电量较大的条件下提供给螺线管的电流量的量。

公开(公告)号：US11852132B2

公开(公告)日：2023-12-26

申请号：US17259578

申请日：2018-12-19

申请人： Gree Electric Appliances, Inc. of Zhuhai

发明人： Hua Liu ,  Ke Xu ,  Qunbo Liu ,  Longfei Li ,  Yaopeng Rong

IPC分类号： F04B49/06 ,  F04B27/00 ,  F04B49/02 ,  F04C23/00 ,  F04C28/08 ,  F04C28/02

CPC分类号： F04B49/065 ,  F04B27/005 ,  F04B49/02 ,  F04C23/001 ,  F04C28/02 ,  F04C28/08 ,  F04B2203/0204 ,  F04B2205/07 ,  F04B2207/03 ,  F04B2207/703 ,  F04C2270/075 ,  F04C2270/095

摘要： The disclosure discloses a method and a device for controlling cylinder switching of a compressor, a unit and an air conditioning system. The method includes: determining whether the compressor needs to perform cylinder switching; if so, adjusting current operating frequency according to a system pressure difference so that both the adjusted operating frequency and the system pressure difference meet a cylinder switching condition of the compressor; and controlling the compressor to perform cylinder switching. At the moment, the system pressure difference and the operation frequency are stable, and would not interfere the compressor's maintaining of the single-cylinder or double-cylinder operation state, which guarantees the energy efficiency of the unit where the compressor is located, and improves the use experience of a user.

公开(公告)号：US11808261B2

公开(公告)日：2023-11-07

申请号：US17285802

申请日：2018-12-14

申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

发明人： Hua Liu ,  Longfei Li ,  Handong Xue ,  Yi Ni ,  Yingsheng Fu ,  Yaopeng Rong ,  Zhongqiu Zhang ,  Qunbo Liu ,  Ke Xu

IPC分类号： F04B51/00 ,  F04B25/00 ,  F04B49/06 ,  F04C23/00 ,  F04C28/06 ,  F04C28/08 ,  F04C28/28 ,  F04B41/00 ,  F04C18/356 ,  F04C18/344 ,  F04C28/02

CPC分类号： F04B51/00 ,  F04B25/005 ,  F04B49/065 ,  F04C23/001 ,  F04C28/065 ,  F04C28/08 ,  F04C28/28 ,  F04B41/00 ,  F04B2203/0201 ,  F04B2203/0204 ,  F04C18/344 ,  F04C18/356 ,  F04C28/02 ,  F04C2270/075 ,  F04C2270/095

摘要： Disclosed are a variable capacity compressor operation mode determination method and device, a variable capacity compressor and an air conditioner. The variable capacity compressor operation mode determination method includes: detecting a current value of a compressor at present as A1 before switching an operation mode of the compressor; detecting the current value of the compressor at present as A2 after switching the operation mode of the compressor and reaching a preset time; comparing A1 and A2, determining that the switching of the operation mode of the compressor is successful when a ratio relationship between A1 and A2 satisfies a preset condition, and determining that switching of the operation mode of the compressor is failed when the ratio relationship between A1 and A2 dissatisfies a preset condition.

公开(公告)号：US09976555B2

公开(公告)日：2018-05-22

申请号：US14706791

申请日：2015-05-07

申请人： DELTA ELECTRONICS, INC.

发明人： Lon-Jay Cheng

IPC分类号： F04C13/00 ,  E21B43/12 ,  F04C2/107 ,  F04C14/28

CPC分类号： F04C13/008 ,  E21B43/121 ,  E21B43/126 ,  F04C2/1071 ,  F04C14/28 ,  F04C2240/403 ,  F04C2270/035 ,  F04C2270/075 ,  F04C2270/72

摘要： A control method is used with a control system to control a screw pump. The control system includes an electric motor and a motor drive. The control method includes following steps. Firstly, a DC bus voltage is monitored. If the DC bus voltage is smaller than a first threshold value, a potential energy stored in the pump screw and released by a backspin action is converted into a regenerative electrical energy so as to maintain a normal operation of the motor drive. Then, the motor drive drives the electric motor to control the backspin action of the screw pump according to a backspin torque limit strategy. If the electrical power from the power source is not restored and the level of a reverse regenerative torque is smaller than a preset torque value, the backspin action of the screw pump is stopped freely.