System and method for electronic de-clogging of microcoolers

    公开(公告)号:US09683766B1

    公开(公告)日:2017-06-20

    申请号:US14330316

    申请日:2014-07-14

    CPC classification number: F25B47/00 F22B1/28 F25B9/02 F25B2500/04 H01C17/06

    Abstract: A microcooler includes a substrate with a first and second microchannel and an orifice disposed between, in fluid communication with both. A pair of electrodes is in a vicinity of the orifice. An electrical resistive heating material is in electrical communication with the electrodes and is in thermal contact with a fluid in the vicinity of the orifice. A system includes the microcooler and a voltage source to apply a voltage across the electrodes, which induces sufficient heating in the heating material to disassociate something clogging the orifice, without significant damage to the heating material. Some systems include a sensor configured to detect an effect of clogging at the orifice. A processor is configured to receive sensor output from the sensor, and if there is an effect of clogging, then cause the voltage to be applied across the electrodes.

    IDCA for fast cooldown and extended operating time
    66.
    发明授权
    IDCA for fast cooldown and extended operating time 有权
    IDCA可快速冷却和延长运行时间

    公开(公告)号:US09328943B2

    公开(公告)日:2016-05-03

    申请号:US13822522

    申请日:2012-07-20

    Abstract: Systems, methods, and devices for integrated detector cooler assemblies (IDCAs) and multi-circuit cryostats are discussed herein. Solutions include using cryostats with multiple cooling circuits. Some cryostat variations may include a rapid cooldown circuit and a temperature maintenance circuit. In some cases, the temperature maintenance circuit may be a closed-loop circuit run by a compressor instead of an open-loop circuit run on a pressurized gas bottle/cartridge. Variations of a cryostat may also include a gas expander portion that replaces the coldfinger of typical IDCAs. Further variations of cooling circuits may include circuits that perform reverse-flow heat exchange to pre-cool incoming refrigerant and also cooling circuits that have heat bridges disposed thereon to assist in such heat exchange.

    Abstract translation: 本文讨论了集成检测器冷却器组件(IDCAs)和多回路低温恒温器的系统,方法和设备。 解决方案包括使用具有多个冷却回路的低温恒温器。 一些低温恒温器变化可以包括快速冷却电路和温度维持电路。 在一些情况下,温度维持电路可以是由压缩机运行的闭环电路,而不是在加压气瓶/盒上运行的开环电路。 低温恒温器的变化还可以包括取代典型IDCAs的冷启动器的气体膨胀器部分。 冷却回路的进一步的变化可以包括执行逆流热交换以预冷入口制冷剂的电路,还有具有设置在其上的热桥的冷却回路以辅助这种热交换。

    IDCA FOR FAST COOLDOWN AND EXTENDED OPERATING TIME
    67.
    发明申请
    IDCA FOR FAST COOLDOWN AND EXTENDED OPERATING TIME 有权
    IDCA快速燃烧和延长操作时间

    公开(公告)号:US20130192275A1

    公开(公告)日:2013-08-01

    申请号:US13822522

    申请日:2012-07-20

    Abstract: Systems, methods, and devices for integrated detector cooler assemblies (IDCAs) and multi-circuit cryostats are discussed herein. Solutions include using cryostats with multiple cooling circuits. Some cryostat variations may include a rapid cooldown circuit and a temperature maintenance circuit. In some cases, the temperature maintenance circuit may be a closed-loop circuit run by a compressor instead of an open-loop circuit run on a pressurized gas bottle/cartridge. Variations of a cryostat may also include a gas expander portion that replaces the coldfinger of typical IDCAs. Further variations of cooling circuits may include circuits that perform reverse-flow heat exchange to pre-cool incoming refrigerant and also cooling circuits that have heat bridges disposed thereon to assist in such heat exchange.

    Abstract translation: 本文讨论了集成检测器冷却器组件(IDCAs)和多回路低温恒温器的系统,方法和设备。 解决方案包括使用具有多个冷却回路的低温恒温器。 一些低温恒温器变化可以包括快速冷却电路和温度维持电路。 在一些情况下,温度维持电路可以是由压缩机运行的闭环电路,而不是在加压气瓶/盒上运行的开环电路。 低温恒温器的变化还可以包括取代典型IDCAs的冷启动器的气体膨胀器部分。 冷却回路的进一步的变化可以包括执行逆流热交换以预冷入口制冷剂的电路,还有具有设置在其上的热桥的冷却回路以辅助这种热交换。

    CRYOGEN-FREE COOLING SYSTEM FOR ELECTRON PARAMAGNETIC RESONANCE SYSTEM
    68.
    发明申请
    CRYOGEN-FREE COOLING SYSTEM FOR ELECTRON PARAMAGNETIC RESONANCE SYSTEM 有权
    电子参比共振系统的无冷冻冷却系统

    公开(公告)号:US20130021032A1

    公开(公告)日:2013-01-24

    申请号:US13188270

    申请日:2011-07-21

    Abstract: In an electron paramagnetic resonance spectrometer, a closed cycle cryocooler is used to cool gaseous helium, which is then circulated around a sample to cool the sample by direct convection. Since the sample is not mechanically connected to the refrigerator, no vibrations are transmitted from the refrigerator to the sample and the sample can be quickly removed and replaced. The cooled helium can be passed through a Joule-Thomson expansion device before circulating the cooled helium around the sample to further cool the helium. In addition, a vacuum pump can be connected to the helium outlet after circulating the cooled helium around the sample to increase the pressure differential across the Joule-Thomson expansion device and further cool the helium. In order to raise the temperature of the cooled helium, a heater can be placed about the cooled helium line upstream from the sample.

    Abstract translation: 在电子顺磁共振光谱仪中,使用封闭循环的低温冷却器来冷却气态氦气,然后将其循环在样品周围,通过直接对流冷却样品。 由于样品没有机械地连接到冰箱,所以没有振动从冰箱传输到样品,并且可以快速地取出和更换样品。 冷却的氦气可以通过焦耳 - 汤姆逊膨胀装置,然后将冷却的氦气循环到样品周围,以进一步冷却氦气。 此外,在将冷却的氦气循环到样品周围之后,真空泵可以连接到氦出口,以增加焦耳 - 汤姆森膨胀装置的压差,并进一步冷却氦气。 为了提高冷氦的温度,可以在样品上游的冷却氦管线周围放置加热器。

    Refrigeration source for a cryoblation catheter
    69.
    再颁专利
    Refrigeration source for a cryoblation catheter 失效
    冷冻导管的制冷源

    公开(公告)号:USRE40868E1

    公开(公告)日:2009-08-11

    申请号:US11865686

    申请日:2007-10-01

    Abstract: A catheter-based system for performing a cryoablation procedure uses a precooler to lower the temperature of a fluid refrigerant to a sub-cool temperature (−40° C.) at a working pressure (400 psi). The sub-cooled fluid is then introduced into a supply line of the catheter. Upon outflow of the primary fluid from the supply line, and into a tip section of the catheter, the fluid refrigerant boils at an outflow pressure of approximately one atmosphere, at a temperature of about −88° C. In operation, the working pressure is computer controlled to obtain an appropriate outflow pressure for the coldest possible temperature in the tip section.

    Abstract translation: 用于执行冷冻消融程序的基于导管的系统使用预冷器来在工作压力(400psi)下将流体制冷剂的温度降低到亚冷温度(-40℃)。 然后将次冷流体引入导管的供应管线。 在主要流体从供应管路流出并进入导管的尖端部分时,流体制冷剂在大约一个大气压的流出压力下沸腾,温度约为-88℃。在操作中,工作压力为 计算机控制以获得适当的流出压力,用于在尖端部分中最冷的温度。

    Laser Thermal Management Systems And Methods
    70.
    发明申请
    Laser Thermal Management Systems And Methods 有权
    激光热管理系统与方法

    公开(公告)号:US20080198883A1

    公开(公告)日:2008-08-21

    申请号:US11676898

    申请日:2007-02-20

    Applicant: Jan Vetrovec

    Inventor: Jan Vetrovec

    Abstract: A laser system thermal management system includes a laser gain assembly and a thermal management assembly. The laser gain assembly includes a laser gain medium and may include laser pump diodes. The thermal management system includes a high pressure gas tank connected to an open-cycle Joule-Thompson refrigerator. Cooled and partially liquefied gas is introduced into a reservoir. The reservoir may be in good direct thermal contact with the laser gain assembly or via a closed loop recirculating fluid heat exchanger. The heat generated by the laser gain assembly is removed by heat exchange with the cooled gas and condensate in the reservoir either by direct thermal contact or via the recirculating heat exchanger loop. Gas evaporating in the reservoir is vented.

    Abstract translation: 激光系统热管理系统包括激光增益组件和热管理组件。 激光增益组件包括激光增益介质,并且可以包括激光泵二极管。 热管理系统包括连接到开环焦耳汤普森冰箱的高压气罐。 将冷却和部分液化的气体引入储存器。 储存器可以与激光增益组件或通过闭环循环流体热交换器良好的直接热接触。 通过与冷却的气体和储存器中的冷凝物进行热交换,通过直接热接触或通过循环热交换器回路来消除由激光增益组件产生的热量。 在储存器中蒸发的气体被排出。

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