MOTOR DRIVE CIRCUIT
    1.
    发明申请
    MOTOR DRIVE CIRCUIT 有权
    电机驱动电路

    公开(公告)号:US20090295321A1

    公开(公告)日:2009-12-03

    申请号:US12475168

    申请日:2009-05-29

    IPC分类号: H02H7/08

    摘要: A first semiconductor switching element connects to a high side of a motor and includes a diode whose cathode faces the high side. A second semiconductor switching element having a diode resides on a low side of the first semiconductor switching element. A third semiconductor switching element having a diode resides on a low side of the motor. A fourth semiconductor switching element is connected in parallel to the motor and configures a return current circuit that includes a return current element and causes a return current that arises when the first semiconductor switching element turns off to flow through the return current element. A control portion controls on-off states of the first to the fourth semiconductor switching elements and performs return current circuit failure detection based on a first monitor voltage that is an electric potential of a connecting point between the first semiconductor switching element and the motor.

    摘要翻译: 第一半导体开关元件连接到电动机的高侧,并且包括阴极面向高侧的二极管。 具有二极管的第二半导体开关元件位于第一半导体开关元件的低侧。 具有二极管的第三半导体开关元件位于电动机的低侧。 第四半导体开关元件与电动机并联连接,构成包括回流元件的返回电流电路,并且在第一半导体开关元件截止流过返回电流元件时产生返回电流。 控制部分控制第一至第四半导体开关元件的开关状态,并且基于作为第一半导体开关元件和电动机之间的连接点的电位的第一监视电压来执行返回电流电路故障检测。

    Motor drive circuit
    3.
    发明授权
    Motor drive circuit 有权
    电机驱动电路

    公开(公告)号:US08159165B2

    公开(公告)日:2012-04-17

    申请号:US12475168

    申请日:2009-05-29

    IPC分类号: H02H7/08

    摘要: A first semiconductor switching element connects to a high side of a motor and includes a diode whose cathode faces the high side. A second semiconductor switching element having a diode resides on a low side of the first semiconductor switching element. A third semiconductor switching element having a diode resides on a low side of the motor. A fourth semiconductor switching element is connected in parallel to the motor and configures a return current circuit that includes a return current element and causes a return current that arises when the first semiconductor switching element turns off to flow through the return current element. A control portion controls on-off states of the first to the fourth semiconductor switching elements and performs return current circuit failure detection based on a first monitor voltage that is an electric potential of a connecting point between the first semiconductor switching element and the motor.

    摘要翻译: 第一半导体开关元件连接到电动机的高侧,并且包括阴极面向高侧的二极管。 具有二极管的第二半导体开关元件位于第一半导体开关元件的低侧。 具有二极管的第三半导体开关元件位于电动机的低侧。 第四半导体开关元件与电动机并联连接,构成包括回流元件的返回电流电路,并且在第一半导体开关元件截止流过返回电流元件时产生返回电流。 控制部分控制第一至第四半导体开关元件的开关状态,并且基于作为第一半导体开关元件和电动机之间的连接点的电位的第一监视电压来执行返回电流电路故障检测。

    Method of manufacturing a compressor
    6.
    发明申请
    Method of manufacturing a compressor 失效
    制造压缩机的方法

    公开(公告)号:US20080010826A1

    公开(公告)日:2008-01-17

    申请号:US11808966

    申请日:2007-06-14

    IPC分类号: B23P15/00

    摘要: An object is to provide a compressor capable of surely preventing leakage of a refrigerant gas from a connection portion between an airtight container and a pipe to the outside at low to the outside at low costs. The compressor comprises an airtight container to which a refrigerant introduction pipe is connected, and a compression element received in the airtight container to discharge the refrigerant into the same. The refrigerant introduction pipe has a cylindrical pipe main body, and a jaw-like flange portion formed in a tip of the pipe main body. A cylindrical connection sleeve is disposed between the refrigerant introduction pipe and the airtight container. A first bolt is disposed to connect the connection sleeve to the airtight container, and a second bolt is disposed to connect the connection sleeve to the flange portion of the refrigerant introduction pipe. The flange portion of the refrigerant introduction pipe hides the first bolt.

    摘要翻译: 本发明的目的是提供一种压缩机,其能够以低成本可靠地防止制冷剂气体从密封容器和管道之间的连接部分泄漏到外部。 压缩机包括连接有制冷剂导入管的气密容器和容纳在气密容器中的压缩元件,以将制冷剂排出到其中。 制冷剂导入管具有圆筒形管主体和形成在管主体的顶端中的颚状凸缘部。 在制冷剂导入管和气密容器之间设置圆筒形连接套筒。 第一螺栓被设置成将连接套筒连接到密封容器,并且第二螺栓被设置成将连接套筒连接到制冷剂引入管的凸缘部分。 制冷剂导入管的凸缘部分隐藏第一螺栓。

    Horizontal type compressor and automobile air conditioner equipped with the same
    8.
    发明申请
    Horizontal type compressor and automobile air conditioner equipped with the same 有权
    卧式压缩机和汽车空调配备相同

    公开(公告)号:US20050069445A1

    公开(公告)日:2005-03-31

    申请号:US10873293

    申请日:2004-06-23

    摘要: An object is to execute sure oil supplying to a second rotary compression element in a horizontal type compressor equipped with the second rotary compression element in which pressure becomes higher than that in an airtight container. A horizontal type rotary compressor of a multistage compression system comprises a driving element and a compression mechanism section driven by the driving element in a horizontal type airtight container. The compression mechanism section is constituted of first and second rotary compression elements. A refrigerant compressed by the first rotary compression element is discharged into the airtight container, and the discharged refrigerant of intermediate pressure is further compressed by the second rotary compression element to be discharged. A gist is that an oil supply passage is formed in a cylinder of the second rotary compression element 34 to communicate a low-pressure chamber of the cylinder with a bottom part in the airtight container.

    摘要翻译: 本发明的目的是在配备有压力变得高于气密容器中的第二旋转压缩元件的卧式压缩机中对第二旋转压缩元件执行肯定的供油。 多级压缩系统的卧式旋转式压缩机包括驱动元件和由水平型气密容器中的驱动元件驱动的压缩机构部。 压缩机构部由第一和第二旋转压缩元件构成。 由第一旋转压缩元件压缩的制冷剂被排出到密闭容器中,中压的排出制冷剂被第二旋转压缩元件进一步压缩以被排出。 要点是在第二旋转压缩元件34的气缸中形成供油通道,以将气缸的低压室与气密容器中的底部部分连通。

    Multistage compression type rotary compressor

    公开(公告)号:US07621729B2

    公开(公告)日:2009-11-24

    申请号:US12068603

    申请日:2008-02-08

    IPC分类号: F04C2/00 F03C4/00

    摘要: An object is to provide a high inner pressure type multistage compression rotary compressor capable of avoiding beforehand generation of vane fly of a second rotary compression element and realizing a stabilized operation, the rotary compressor includes a communication path which connects an intermediate pressure region to a region having a low pressure as a suction pressure of a first rotary compression element; and a valve device which opens or closes this communication path, the rotary compressor applies a high pressure as a back pressure of an upper vane, and this valve device opens the communication path in a case where a pressure difference between the intermediate pressure and the low pressure increases a predetermined upper limit value before the intermediate pressure reaches the high pressure.