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    Control apparatus for variable capacity compressor and method of calculating torque of variable capacity compressor
    151.
    发明公开
    Control apparatus for variable capacity compressor and method of calculating torque of variable capacity compressor 有权
    变容量压缩机的控制装置和变容量压缩机的转矩计算方法

    公开(公告)号：EP1726829A3

    公开(公告)日：2006-12-06

    申请号：EP06010702.6

    申请日：2006-05-23

    Applicant: Calsonic Kansei Corporation

    Inventor： Takahashi, Eiji c/o Calsonic Kansei Corporation ,  Kawachi, Masaki c/o Calsonic Kansei Corporation ,  Ogawa, Masanori c/o Calsonic Kansei Corporation ,  Sekizuka, Morio c/o Calsonic Kansei Corporation

    IPC: F04B49/06 ,  F04B27/18

    CPC classification number: F04B27/1804 ,  B60H1/3216 ,  B60H1/3219 ,  B60H2001/3238 ,  B60H2001/3263 ,  B60H2001/327 ,  B60H2001/3275 ,  F04B49/065 ,  F04B2027/1827 ,  F04B2027/1854 ,  F04B2027/1859 ,  F04B2201/1202

    Abstract: An apparatus for calculating torque of a variable capacity compressor (8) is provided. The compressor (8) includes a suction chamber (50), a discharge chamber (49), a piston (27) to draw coolant from the suction chamber (50), compress the drawn coolant, and discharge the compressed coolant into the discharge chamber (49), a clutch (43) to be turned on to transmit driving force from a driving source (1) to the piston (27) so that the piston (27) operates and to be turned off to disconnect the driving force of the driving source (1) from the piston (27) so that the piston (27) stops, and a pressure adjuster (13) to adjust a back pressure (Pc) introduced from the discharge chamber (49) to the back of the piston (27) and thereby adjust a piston stroke. The apparatus comprises a counter (101) configured to count an OFF time (t0) when the clutch (43) is tuned off from an ON state until the clutch (43) is next turned on, a determiner (103) configured to determine whether or not the OFF time (t0) is less than a predetermined time, and a start torque calculator (109) configured to calculate a start torque of the compressor (8) depending on the determination of the determiner (103).

    Abstract translation: 提供了一种用于计算可变容量压缩机（8）的转矩的装置。 压缩机8包括吸入室50，排出室49，从吸入室50吸入冷却液的活塞27，压缩吸入的冷却液，并将压缩后的冷却液排出到排出室 （49）;一个离合器（43），被接通以将来自驱动源（1）的驱动力传递给活塞（27），从而使活塞（27）工作并关闭以断开驱动源 驱动源（1）从活塞（27）中移出以使活塞（27）停止;以及压力调节器（13），用于调节从排出室（49）引入活塞（27）的背部的背压（Pc） 27）并由此调节活塞行程。 该装置包括：计数器（101），其被配置为对离合器（43）从ON状态调谐到离合器（43）下一次接通时的OFF时间（t0）进行计数;确定器（103），其被配置为确定是否 （t0）是否小于预定时间;以及起动转矩计算器（109），配置成根据确定器（103）的确定来计算压缩机（8）的起动转矩。

    Pump and motor assembly with constant pressure output
    152.
    发明公开
    Pump and motor assembly with constant pressure output 审中-公开
    具有恒定输出压力泵 - 马达组件

    公开(公告)号：EP1394414A3

    公开(公告)日：2004-12-08

    申请号：EP03019506.9

    申请日：2003-08-28

    Applicant: Kadant Inc.

    Inventor： Carstensen, Peter T.

    IPC: F04B49/06

    CPC classification number: F04B49/20 ,  F04B11/00 ,  F04B49/065 ,  F04B2201/1202 ,  F04B2201/1208 ,  F04B2203/0204 ,  F04B2203/0207

    Abstract: Disclosure is made of a precision hydraulic energy delivery system that directly couples the pump to a primary mover (motor) and a related motor control. The system provides flow control of a hydraulically driven machine without the use of downstream devices by employing motion control algorithms in the motor control. Control features are electronically integrated into the hydraulic system by using control algorithms and subroutines specifically developed for the prime mover servo control system coupled to the pump.

    Hydraulic pump control system
    156.
    发明公开
    Hydraulic pump control system 失效
    Steuersystem einer hydraulischen Pumpe

    公开(公告)号：EP0851122A2

    公开(公告)日：1998-07-01

    申请号：EP97310426.8

    申请日：1997-12-22

    Applicant: Shin Caterpillar Mitsubishi Ltd.

    Inventor： Konishi, Hideo, c/o Shin Caterpillar Mitsub. Ltd. ,  Samejima, Makoto, c/o Mitsubishi Heavy Ind., Ltd.

    IPC: F04B49/06

    CPC classification number: F04B49/065 ,  E02F9/2235 ,  F02D31/001 ,  F02D2250/24 ,  F04B49/08 ,  F04B2201/1202 ,  F04B2205/05 ,  F04B2205/06

    Abstract: Disclosed is a hydraulic pump control system which can control the absorbing torque of a hydraulic pump with respect to the engine power in a well-balanced manner, and reduce a deviation of an actual revolution number from a target revolution number of the engine. A torque (Tp) of hydraulic pumps during operation is estimated from a pump pressure (Pp) and first and second line pressures (Pr1, Pr2). Based on the estimated torque (Tp), an output torque (Tr) of the hydraulic pumps is controlled so that an error (ΔNe) between a target revolution number (Nset) and an actual revolution number (Ns) of the engine becomes null.

    Abstract translation: 公开了一种液压泵控制系统，其能够以良好的平衡方式控制液压泵相对于发动机功率的吸收转矩，并且减少实际转数与发动机的目标转速的偏差。 根据泵压力（Pp）和第一和第二管路压力（Pr1，Pr2）估计运行期间液压泵的扭矩（Tp）。 基于估计转矩（Tp），控制液压泵的输出转矩（Tr），使得目标转速（Nset）与发动机的实际转速（Ns）之间的误差（DELTA Ne）变为零 。

    CAPACITY CONTROL DEVICE IN VARIABLE CAPACITY HYDRAULIC PUMP.
    157.
    发明公开
    CAPACITY CONTROL DEVICE IN VARIABLE CAPACITY HYDRAULIC PUMP. 无效
    容量控制装置变流量液压泵。

    公开(公告)号：EP0667452A4

    公开(公告)日：1996-12-18

    申请号：EP93923672

    申请日：1993-10-29

    Applicant: KOMATSU MFG CO LTD

    Inventor： ODA YOSUKE ,  SHIRAI KIYOSHI

    IPC: F04B49/00 ,  F04B49/08

    CPC classification number: F04B49/002 ,  F04B49/08 ,  F04B2201/1202 ,  F04B2205/05

    Abstract: A capacity control device in a variable capacity hydraulic pump comprising: a capacity control piston (6) provided with a large diameter chamber (7), for operating a capacity control member (5) of the variable capacity hydraulic pump (1) in a direction of decreasing or increasing the capacity by supplying or discharching pressure oil to or from said large diameter chamber (7); a first control valve (8) and a second control valve (9) for selectively allowing said large diameter chamber of said capacity control piston to communicate with a pump discharge path or a tank; said first control being set to a supply position by the pump discharge pressure and to a drain position by a spring linked with said capacity control piston through a feedback lever, and said second control valve being set to a first position for establishing communication between the pump discharge path and said large diameter chamber by the pump discharge pressure and to a second position for establishing communication between said large diameter chamber and said first control valve by negative pressure; wherein a flow sectional area of an oil path between said large diameter chamber and the pump discharge path or the tank is changed. With this arrangement, a change in the flow sectional area in an intermediate portion of the oil path can change the supply or discharge speed of the pump discharge pressure to the large diameter chamber of said capacity control piston, whereby the responsiveness of the capacity control of said variable hydraulic pump can be regulated, thereby improving the operability of a working machine.

    Hydraulically actuated diaphragm pumps
    159.
    发明授权
    Hydraulically actuated diaphragm pumps 有权

    公开(公告)号：US09845794B2

    公开(公告)日：2017-12-19

    申请号：US14049088

    申请日：2013-10-08

    Applicant: Ingersoll-Rand Company

    Inventor： Warren A. Seith ,  Aaron M. Crescenti

    IPC: F04B9/04 ,  F04B43/02 ,  F04B43/067 ,  F04B49/06

    CPC classification number: F04B9/045 ,  F04B43/026 ,  F04B43/067 ,  F04B49/065 ,  F04B2201/0206 ,  F04B2201/1202 ,  F04B2203/0201

    Abstract: A diaphragm pump may comprise a housing defining a first pumping chamber, a second pumping chamber, and a hydraulic fluid chamber, a first flexible diaphragm separating the first pumping chamber from the hydraulic fluid chamber, a second flexible diaphragm separating the second pumping chamber from the hydraulic fluid chamber, a rod mechanically linking the first flexible diaphragm and the second flexible diaphragm such that an expansion of one of the first and second flexible diaphragms exerts a contraction force on the other of the first and second flexible diaphragms, and a piston disposed within the hydraulic fluid chamber and configured to reciprocate to cause a hydraulic fluid contained within the hydraulic fluid chamber to alternately exert an expansion force on the first and second flexible diaphragms.

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