Electronically controlled cryopump
    2.
    发明授权
    Electronically controlled cryopump 失效
    电子控制低温泵

    公开(公告)号:US5157928A

    公开(公告)日:1992-10-27

    申请号:US704664

    申请日:1991-05-20

    IPC分类号: F04B37/08 F04D19/04 F04D27/00

    摘要: A cryogenic vacuum pump includes, in an integral assembly, temperature sensors and heaters associated with the first and second stages of the cryopumping array, a roughing valve and a purge valve. An electronic module removably coupled in the assembly responds to all sensors and controls all operations of the cryopump including regeneration thereof. System parameters are stored in a nonvolatile memory in the module. Included in the regeneration procedures are an auto-zero of the pressure gauge, heating of the array throughout rough pumping, and a change in pressure rate test to determine stall in rough pumping. The electronic module also restarts the system after power failure, limits use of a pressure gauge to safe conditions, provides warnings before allowing opening of the valves while the cryopump is operating and stores sensor calibration information. Control through a control pad on the pump may be limited by a password requirement. Password override is also provided.

    摘要翻译: 低温真空泵在整体组件中包括与低温泵阵列的第一级和第二级相关联的温度传感器和加热器,粗抽阀和净化阀。 可拆卸地联接在组件中的电子模块响应所有传感器并控制低温泵的所有操作,包括其再生。 系统参数存储在模块中的非易失性存储器中。 在再生程序中包括压力表的自动调零,粗糙泵送时阵列的加热,以及压力比测试的变化,以确定粗抽泵中的失速。 电子模块还在断电后重新启动系统,将压力表的使用限制在安全条件下,在低温泵运行时允许打开阀门之前提供警告并存储传感器校准信息。 通过泵上的控制盘的控制可能受到密码要求的限制。 还提供密码覆盖。

    Electronically controlled vacuum pump with control module
    3.
    发明授权
    Electronically controlled vacuum pump with control module 失效
    电控真空泵带控制模块

    公开(公告)号:US06022195A

    公开(公告)日:2000-02-08

    申请号:US517091

    申请日:1995-08-21

    摘要: A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. In the turbomolecular pump system proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.

    摘要翻译: 真空系统包括作为整体组件的具有驱动电动机,净化阀,粗抽阀和电子控制模块的真空泵。 公开了一种低温真空泵和涡轮分子真空泵。 控制模块具有用于控制电动机和阀的编程处理器,并且是用户编程的,用于建立特定的控制顺序。 集成电子控制模块可从组件移除,并通过公共连接器组件连接到其他设备。 在涡轮分子泵系统中,通过检测泵驱动器上的当前负载或通过检测前级管路压力来检测净化气体通过净化阀的适当引入。 为了测试吹扫气体状态,可以关闭吹扫阀,然后在监视驱动电流或压力时打开。 停电后,只要泵的速度保持在阈值以上,控制器将继续正常驱动涡轮分子泵。 否则排气阀将被打开,启动顺序必须启动。 在停机期间,停止对泵驱动电机供电,并在排气阀关闭前打开排气阀。

    Apparatus and method for steaming and slicing eggs

    公开(公告)号:US10251506B1

    公开(公告)日:2019-04-09

    申请号:US15964071

    申请日:2018-04-27

    摘要: An apparatus used in a cooking pot and holding up to thirteen small-to-large chicken eggs for the purpose of steaming the eggs until cooked. The apparatus has a bottom surface with six lower egg supports and one center egg support. Six additional upper egg supports are located radially and alternatingly between six perimeter wall sections. The bottom surface is elevated on legs that allow a small volume of water to be placed under it and heated to steam the eggs. The perimeter walls extend upwardly from the bottom surface above eggs seated on the lower egg supports, each wall section having a beginning slicing guide slot aligned with the centers of seated eggs. Finishing slicing guide slots also extend through the center egg support and each of the lower egg supports to allow a slicing device inserted into the vertically-extending slicing guide slots to cut peeled eggs in half.