-
公开(公告)号：US09556875B2
公开(公告)日：2017-01-31
申请号：US14153882
申请日：2014-01-13
发明人： Paul F. Haley , Dennis R. Dorman , Frederic Byron Hamm, Jr. , David M. Foye , James A. Kwiatkowski , Rick T. James , Randall L. Janssen , William J. Plzak
CPC分类号： F04D25/06 , F04D17/10 , F04D17/122 , F04D29/4213 , F04D29/441
摘要： A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.
摘要翻译： 一种用于在250吨或更大的冷冻机系统中压缩制冷剂的离心式压缩机组件，其包括电动机，优选紧凑的高能量密度电动机或永磁电动机，用于在持续运行速度的范围内驱动轴， 变速驱动。 离心压缩机组件的另一个实施例包括混合流动叶轮和无叶漫射器，其尺寸使得最终级压缩机以最佳特定速度范围进行操作，用于头部和容积的目标组合，而非最终级压缩机在最佳特定 最终级压缩机的速度。 离心式压缩机组件的另一个实施例包括集成的入口流调节组件，用于调节制冷剂进入叶轮的流量，以实现目标大约恒定角度的涡流分布，同时具有最小的导向叶片转动。
-
公开(公告)号：US20150263655A1
公开(公告)日：2015-09-17
申请号：US14665402
申请日：2015-03-23
CPC分类号： H02P6/12 , F04B35/04 , F04B49/06 , F04B2203/0202 , H02P3/18 , H02P3/22 , H02P6/182 , H02P6/24 , H02P29/0241
摘要： A system includes a motor, an inverter bridge, a voltage detection circuit, and a controller. The motor has a stator and a rotor. The inverter bridge is configured to provide a voltage to the stator, and includes a first switch connected in a series-type relationship with a second switch, a first diode coupled across the first switch, and a second diode coupled across the second switch. The voltage detection circuit is configured to detect a back EMF voltage in the winding. The controller is configured to control the first switch and the second switch to drive the motor, and to receive an indication of the back EMF voltage in the winding from the voltage detection circuit. The controller is also configured to determine a fault has occurred, and to drive one of the first switch and the second switch when a fault has occurred.
摘要翻译： 系统包括电动机，逆变器桥，电压检测电路和控制器。 电机具有定子和转子。 逆变器桥被配置为向定子提供电压，并且包括与第二开关以串联型关系连接的第一开关，跨越第一开关耦合的第一二极管和跨越第二开关耦合的第二二极管。 电压检测电路被配置为检测绕组中的反电动势电压。 控制器被配置为控制第一开关和第二开关以驱动电动机，并且从电压检测电路接收绕组中的反电动势电压的指示。 控制器还被配置为确定发生了故障，并且在发生故障时驱动第一交换机和第二交换机之一。
-
公开(公告)号：US10352608B2
公开(公告)日：2019-07-16
申请号：US15676220
申请日：2017-08-14
摘要： 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.
-
公开(公告)号：US09733002B2
公开(公告)日：2017-08-15
申请号：US14532241
申请日：2014-11-04
CPC分类号： F25B49/022 , F04B35/04 , F04C18/00 , F04C18/16 , F04C28/08 , F04C2240/403 , F04C2240/81 , F04C2270/03 , F25B1/047 , F25B49/025 , F25B2600/02 , F25B2600/0253 , Y02B30/741
摘要： 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.
-
公开(公告)号：US09525369B2
公开(公告)日：2016-12-20
申请号：US14665402
申请日：2015-03-23
CPC分类号： H02P6/12 , F04B35/04 , F04B49/06 , F04B2203/0202 , H02P3/18 , H02P3/22 , H02P6/182 , H02P6/24 , H02P29/0241
摘要： A system includes a motor, an inverter bridge, a voltage detection circuit, and a controller. The motor has a stator and a rotor. The inverter bridge is configured to provide a voltage to the stator, and includes a first switch connected in a series-type relationship with a second switch, a first diode coupled across the first switch, and a second diode coupled across the second switch. The voltage detection circuit is configured to detect a back EMF voltage in the winding. The controller is configured to control the first switch and the second switch to drive the motor, and to receive an indication of the back EMF voltage in the winding from the voltage detection circuit. The controller is also configured to determine a fault has occurred, and to drive one of the first switch and the second switch when a fault has occurred.
-
公开(公告)号：US20150052921A1
公开(公告)日：2015-02-26
申请号：US14532241
申请日：2014-11-04
CPC分类号： F25B49/022 , F04B35/04 , F04C18/00 , F04C18/16 , F04C28/08 , F04C2240/403 , F04C2240/81 , F04C2270/03 , F25B1/047 , F25B49/025 , F25B2600/02 , F25B2600/0253 , Y02B30/741
摘要： 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.
摘要翻译： 用于控制制冷系统的螺杆式压缩机的操作的方法的实施例可以包括接收关于制冷系统的螺杆式压缩机的操作的状态信号。 该方法还可以包括基于接收到的状态信号来确定螺杆式压缩机的工作点，以及基于操作点选择用于螺杆式压缩机的扭矩分布。 该方法还可以包括根据所选择的扭矩分布来驱动螺杆式压缩机。 还介绍了适用于实施该方法的制冷系统和压缩机系统。
-
公开(公告)号：US20140127059A1
公开(公告)日：2014-05-08
申请号：US14153882
申请日：2014-01-13
发明人： Paul F. Haley , Dennis R. Dorman , Frederic Byron Hamm, JR. , David M. Foye , James A. Kwiatkowski , Rick T. James , Randall L. Janssen , William J. Plzak
CPC分类号： F04D25/06 , F04D17/10 , F04D17/122 , F04D29/4213 , F04D29/441
摘要： A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.
摘要翻译： 一种用于在250吨或更大的冷冻机系统中压缩制冷剂的离心式压缩机组件，其包括电动机，优选紧凑的高能量密度电动机或永磁电动机，用于在持续运行速度的范围内驱动轴， 变速驱动。 离心压缩机组件的另一个实施例包括混合流动叶轮和无叶漫射器，其尺寸使得最终级压缩机以最佳特定速度范围进行操作，用于头部和容积的目标组合，而非最终级压缩机在最佳特定 最终级压缩机的速度。 离心式压缩机组件的另一个实施例包括集成的入口流调节组件，用于调节制冷剂进入叶轮的流量，以实现目标大约恒定角度的涡流分布，同时具有最小的导向叶片转动。
-
公开(公告)号：US08875530B2
公开(公告)日：2014-11-04
申请号：US13759728
申请日：2013-02-05
CPC分类号： F25B49/022 , F04B35/04 , F04C18/00 , F04C18/16 , F04C28/08 , F04C2240/403 , F04C2240/81 , F04C2270/03 , F25B1/047 , F25B49/025 , F25B2600/02 , F25B2600/0253 , Y02B30/741
摘要： 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.
摘要翻译： 用于控制制冷系统的螺杆式压缩机的操作的方法的实施例可以包括接收关于制冷系统的螺杆式压缩机的操作的状态信号。 该方法还可以包括基于接收到的状态信号来确定螺杆式压缩机的工作点，以及基于操作点选择用于螺杆式压缩机的扭矩分布。 该方法还可以包括根据所选择的扭矩分布来驱动螺杆式压缩机。 还介绍了适用于实施该方法的制冷系统和压缩机系统。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.017 秒)
