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    • 4. 发明授权
    • System for precharging a DC link in a variable speed drive
    • 用于对变频驱动器中的直流母线进行预充电的系统
    • US07619906B2
    • 2009-11-17
    • US11323884
    • 2005-12-30
    • Harold R. Schnetzka
    • Harold R. Schnetzka
    • H02J5/00
    • H02M1/36H02H9/001H02M5/4585H02M7/125Y02B70/1483
    • A variable speed drive with a converter that is controllable to precharge a DC link is provided. The variable speed drive also includes an inverter. The converter converts a fixed line frequency, fixed line voltage AC power from an AC power source into DC power. The DC link filters the DC power from the converter. Finally, the inverter is connected in parallel with the DC link and converts the DC power from the DC link into a variable frequency, variable voltage AC power. The converter includes a plurality of pairs of power switches, wherein each pair of power switches includes a reverse blocking power switch arrangement connected in anti-parallel to another reverse blocking power switch arrangement. Alternatively, each pair of power switches includes a reverse blocking power switch connected in anti-parallel with a silicon carbide controlled rectifier.
    • 提供了具有可控制以对DC链路进行预充电的转换器的变速驱动器。 变频器还包括一个逆变器。 该转换器将固定线路频率,交流电源的固定线路电压AC电源转换为直流电源。 直流链路过滤掉转换器的直流电源。 最后,逆变器与直流母线并联连接,将直流母线的直流电源转换成变频,可变电压交流电源。 该转换器包括多对功率开关,其中每对功率开关包括与另一反向阻断功率开关装置反并联连接的反向阻断功率开关装置。 或者,每对功率开关包括与碳化硅控制的整流器反并联连接的反向阻断功率开关。
    • 5. 发明授权
    • Extended venturi fan ring
    • 扩展文丘里风扇环
    • US07481619B2
    • 2009-01-27
    • US11201984
    • 2005-08-11
    • Charles Borromeo ObosuMallikarjuna Sarma Chitti
    • Charles Borromeo ObosuMallikarjuna Sarma Chitti
    • F04D29/52
    • F04D29/545F24F7/007F24F7/065
    • A high efficiency, low-noise fan ring for use with a heat exchanger having an annular fan ring body attached to a coaxial mounting ring. The fan ring body extends in a substantially perpendicular direction from an inner periphery of the mounting ring. The annular body has a circumferential periphery profile defined by a plane coincident the center axis and an inner surface of the fan ring body. The periphery profile includes a transition portion and a curved portion. The transition portion extends in a substantially perpendicular direction from the mounting ring and attaches to an end of the curved portion. In order to reduce noise and increase uniformity of airflow, the length of the curved portion of the periphery profile is sufficient long to reduce recirculation of air entering the fan ring body.
    • 一种用于热交换器的高效率,低噪音风扇环,其具有连接到同轴安装环的环形风扇环体。 风扇环体从安装环的内周沿大致正交的方向延伸。 环形体具有由与中心轴线重合的平面和风扇环体的内表面限定的周向周边轮廓。 周边轮廓包括过渡部分和弯曲部分。 过渡部分从安装环沿大致垂直的方向延伸并且附接到弯曲部分的端部。 为了减少噪音和增加气流的均匀性,周边轮廓的弯曲部分的长度足够长以减少进入风扇环体的空气的再循环。
    • 9. 发明申请
    • DIRECT EXPANSION COOLER HIGH VELOCITY DISHED HEAD
    • 直接扩展冷却器高速散热头
    • US20080010829A1
    • 2008-01-17
    • US11781294
    • 2007-07-23
    • Daryl ROHRBAUGHJoel GORDON
    • Daryl ROHRBAUGHJoel GORDON
    • B21D39/04
    • F28F9/0265F28D7/1607F28F9/0202Y10T29/49361
    • A dished head header assembly for a heat exchanger having a containment body that includes a rounded, or dished, wall portion forming an interior cavity. A flange attaches to the containment body and fastens the header assembly to the heat exchanger. A plurality of refrigerant passageways are extended through an opening in the containment body into the interior cavity. At least one baffle is attached to the rounded wall portion. The baffle divides the interior cavity into a plurality of sub-cavities. At least one divider divides the sub-cavities into a plurality of chambers. The plurality of passageways includes an inlet connection and an outlet connection for a plurality of refrigerant circuits. Each passageway is disposed in a corresponding chamber of the plurality of chambers. Extensions into the headers with diffusers insure efficient operation and performance of the heat exchanger. The adjustable flow restrictor plate maintains optimum velocities to further enhance performance.
    • 一种用于热交换器的盘形头部组件,其具有容纳体,该容纳体包括形成内腔的圆形或凹陷壁部分。 凸缘连接到容纳体上,并将集管组件固定到热交换器上。 多个制冷剂通道延伸穿过容纳体中的开口进入内腔。 至少一个挡板连接到圆形壁部分。 挡板将内腔分成多个子腔。 至少一个分隔器将子腔分成多个室。 多个通道包括用于多个制冷剂回路的入口连接和出口连接。 每个通道设置在多个室的相应室中。 扩散器到扩散器的头部保证了热交换器的有效运行和性能。 可调式限流器板保持最佳速度以进一步提高性能。
    • 10. 发明申请
    • Access door
    • 通行门
    • US20070256363A1
    • 2007-11-08
    • US11272170
    • 2005-11-10
    • Christopher HordChristoper ZookMichael Farley
    • Christopher HordChristoper ZookMichael Farley
    • E06B5/00E06B7/16
    • E06B3/822E05C3/042E05C3/043E06B2003/7082Y10T29/53
    • A structural member is provided for constructing a door. The structural member includes a first end portion, a second end portion disposed opposite the first end portion and a web disposed between the first end portion and the second end portion. A channel is disposed between the web and the second end portion, the first end portion being configured to receive a portion of a first door panel to permit the first door panel to be connected to the structural member. The second end portion is configured to receive a portion of a second door panel to permit the second door panel to be connected to the structural member. The channel is configured to receive a peripheral portion of the second door panel, the first and second door panels to be connected to the first and second end portions without mechanical fasteners.
    • 提供构造门的结构构件。 结构构件包括第一端部,与第一端部相对设置的第二端部和布置在第一端部和第二端部之间的腹板。 通道设置在腹板和第二端部之间,第一端部构造成容纳第一门板的一部分以允许第一门板连接到结构构件。 第二端部构造成容纳第二门板的一部分以允许第二门板连接到结构构件。 通道被配置为接收第二门板的周边部分,第一和第二门板连接到第一和第二端部而没有机械紧固件。