Method and device for measuring airflows through HVAC grilles
    2.
    发明授权
    Method and device for measuring airflows through HVAC grilles 有权
    通过HVAC格栅测量气流的方法和装置

    公开(公告)号:US07174791B2

    公开(公告)日:2007-02-13

    申请号:US11176167

    申请日:2005-07-07

    IPC分类号: G01F1/00

    CPC分类号: G01F1/10 G01F1/363

    摘要: A fan powered by a controlled external energy source and a flow measurement device measure the airflow exiting or entering grilles/registers of an HVAC system without impeding the airflow being measured. A flow straightening element is preferably employed to overcome any effects of a non-uniform or swirled airflow profile on the fan. Preferably, the RPM of the fan is measured to determine the airflow. The RPM/flow calibration of the fan is insensitive to pressure differentials or the fan is a pressure-sensitive fan submitted to appropriate pressure differentials. Alternatively, the voltage or current supplied to the external energy source is used to determine the airflow. Finally, the pressure differential across the flow straightening element can be measured to determine airflow, eliminating the impact of pressure differential across the flow measurement device and fan.

    摘要翻译: 由受控的外部能源供电的风扇和流量测量装置测量出流或进入HVAC系统的格栅/寄存器的气流,而不会阻碍被测量的气流。 优选地采用流动矫正元件来克服风扇上的不均匀或涡流气流分布的任何影响。 优选地,测量风扇的RPM以确定气流。 风扇的RPM /流量校准对压差不敏感,或风扇是经过适当压差的压敏风扇。 或者,使用提供给外部能量源的电压或电流来确定气流。 最后,可以测量整流元件上的压力差,以确定气流,消除流量测量装置和风扇两端的压差的影响。

    Method and device for measuring airflows through HVAC grilles
    6.
    发明授权
    Method and device for measuring airflows through HVAC grilles 失效
    通过HVAC格栅测量气流的方法和装置

    公开(公告)号:US06923072B2

    公开(公告)日:2005-08-02

    申请号:US10338447

    申请日:2003-01-08

    IPC分类号: G01F1/10 G01F1/36 G01F1/00

    CPC分类号: G01F1/10 G01F1/363

    摘要: A fan powered by a controlled external energy source and a flow measurement device measure the airflow exiting or entering grilles/registers of an HVAC system without impeding the airflow being measured. A flow straightening element is preferably employed to overcome any effects of a non-uniform or swirled airflow profile on the fan. Preferably, the RPM of the fan is measured to determine the airflow. The RPM/flow calibration of the fan is insensitive to pressure differentials or the fan is a pressure-sensitive fan submitted to appropriate pressure differentials. Alternatively, the voltage or current supplied to the external energy source is used to determine the airflow. Finally, the pressure differential across the flow straightening element can be measured to determine airflow, eliminating the impact of pressure differential across the flow measurement device and fan.

    摘要翻译: 由受控的外部能源供电的风扇和流量测量装置测量出流或进入HVAC系统的格栅/寄存器的气流,而不会阻碍被测量的气流。 优选地采用流动矫正元件来克服风扇上的不均匀或涡流气流分布的任何影响。 优选地,测量风扇的RPM以确定气流。 风扇的RPM /流量校准对压差不敏感,或风扇是经过适当压差的压敏风扇。 或者,使用提供给外部能量源的电压或电流来确定气流。 最后,可以测量整流元件上的压力差,以确定气流,消除流量测量装置和风扇两端的压差的影响。

    Toy vehicle accessory
    10.
    发明申请
    Toy vehicle accessory 审中-公开
    玩具车配件

    公开(公告)号:US20060084361A1

    公开(公告)日:2006-04-20

    申请号:US10963767

    申请日:2004-10-14

    IPC分类号: A63H3/52 E01B23/00

    摘要: An accessory device for use with at least one toy vehicle is provided, wherein the accessory device includes a first housing and a second housing. The first housing includes a first passageway configured to permit the toy vehicle to pass entirely through the first housing. The first housing may further include a second passageway configured to permit the toy vehicle to completely pass through the first housing. A sensor may be positioned along the first passageway, the second passageway, or both. The sensor may be configured to detect the passage of the toy vehicle through the passageway and activate a sensory output generating device. The accessory device further includes a second housing attachable to the first housing and includes a passageway configured to permit the toy vehicle to pass entirely through the second housing.

    摘要翻译: 提供了一种用于与至少一个玩具车一起使用的附件装置,其中所述附件装置包括第一壳体和第二壳体。 第一壳体包括构造成允许玩具车辆完全穿过第一壳体的第一通道。 第一壳体可以进一步包括构造成允许玩具车辆完全通过第一壳体的第二通道。 传感器可以沿着第一通道,第二通道或两者定位。 传感器可以被配置为检测玩具车辆通过通道的通道并激活感觉输出产生装置。 附件装置还包括可附接到第一壳体的第二壳体,并且包括构造成允许玩具车辆完全穿过第二壳体的通道。