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    • 4. 发明申请
    • Linear Drive Cryogenic Refrigerator
    • 线性驱动低温冰箱
    • US20110126554A1
    • 2011-06-02
    • US12950080
    • 2010-11-19
    • Ronald N. MorrisBruce R. AndeenAllen J. Bartlett
    • Ronald N. MorrisBruce R. AndeenAllen J. Bartlett
    • F25B9/00
    • F04B37/08F25B9/10F25B9/14F25B2400/073
    • A cryogenic refrigerator has a refrigeration cylinder and at least two displacers. Each displacer reciprocates in the refrigeration cylinder and moves refrigeration gas through the refrigeration cylinder. A regenerator cools the refrigeration gas, and gas control valves admit high pressure gas into the refrigeration cylinder and exhaust gas from the refrigeration cylinder. The refrigerator also has linear motors operatively connected to displacers, and the linear motors drive the displacers in reciprocating movement. A position sensor is provided to determine a parameter of the displacers during reciprocation. A controller is operatively connected to the linear motors to control the linear motors. The controller controls a parameter of the two displacers during reciprocation. The parameter can be stroke length, stroke speed, stroke phase or another parameter of the displacer for temperature control of the cryogenic refrigerator. The cryogenic refrigerator may also include a device to remove vibration.
    • 低温冰箱具有制冷缸和至少两个置换器。 每个置换器在制冷气瓶中往复运动,并使制冷气体通过制冷气瓶。 再生器冷却制冷气体,气体控制阀将制冷气瓶内的高压气体和来自制冷气瓶的废气进入。 冰箱还具有可操作地连接到置换器的线性电动机,并且线性电动机以往复运动驱动置换器。 提供位置传感器以在往复运动期间确定置换器的参数。 控制器可操作地连接到线性电动机以控制线性电动机。 控制器在往复运动期间控制两个置换器的参数。 该参数可以是用于低温冰箱的温度控制的置换器的行程长度,行程速度,冲程相位或另一参数。 低温冰箱还可以包括消除振动的装置。
    • 5. 发明授权
    • Linear drive cryogenic refrigerator
    • 线性驱动低温冰箱
    • US08413452B2
    • 2013-04-09
    • US12950080
    • 2010-11-19
    • Ronald N. MorrisBruce R. AndeenAllen J. Bartlett
    • Ronald N. MorrisBruce R. AndeenAllen J. Bartlett
    • F25B9/00
    • F04B37/08F25B9/10F25B9/14F25B2400/073
    • A cryogenic refrigerator has a refrigeration cylinder and at least two displacers. Each displacer reciprocates in the refrigeration cylinder and moves refrigeration gas through the refrigeration cylinder. A regenerator cools the refrigeration gas, and gas control valves admit high pressure gas into the refrigeration cylinder and exhaust gas from the refrigeration cylinder. The refrigerator also has linear motors operatively connected to displacers, and the linear motors drive the displacers in reciprocating movement. A position sensor is provided to determine a parameter of the displacers during reciprocation. A controller is operatively connected to the linear motors to control the linear motors. The controller controls a parameter of the two displacers during reciprocation. The parameter can be stroke length, stroke speed, stroke phase or another parameter of the displacer for temperature control of the cryogenic refrigerator. The cryogenic refrigerator may also include a device to remove vibration.
    • 低温冰箱具有制冷缸和至少两个置换器。 每个置换器在制冷气瓶中往复运动,并使制冷气体通过制冷气瓶。 再生器冷却制冷气体,气体控制阀将制冷气瓶内的高压气体和来自制冷气瓶的废气进入。 冰箱还具有可操作地连接到置换器的线性电动机,并且线性电动机以往复运动驱动置换器。 提供位置传感器以在往复运动期间确定置换器的参数。 控制器可操作地连接到线性电动机以控制线性电动机。 控制器在往复运动期间控制两个置换器的参数。 该参数可以是用于低温冰箱的温度控制的置换器的行程长度,行程速度,冲程相位或另一参数。 低温冰箱还可以包括消除振动的装置。
    • 8. 发明授权
    • Cryogenic recondenser with remote cold box
    • 低温冷凝器与遥控冷藏箱
    • US4766741A
    • 1988-08-30
    • US5082
    • 1987-01-20
    • Allen J. BartlettBruce R. AndeenPhilip A. Lessard
    • Allen J. BartlettBruce R. AndeenPhilip A. Lessard
    • F17C3/08F25B9/00F25B9/10F25J1/00F25J1/02F28F1/42H01F6/00H01F7/20F25B19/00
    • H01F6/00F17C3/085F25B9/00F28F1/42F17C2205/0326F17C2205/0347F17C2205/0355F17C2221/017F17C2223/0161F17C2223/033F17C2227/0353F17C2227/036F17C2250/0626F17C2250/0636F17C2265/012F17C2270/0509F17C2270/0536
    • A recondenser cycles a working volume of cryogen gas through a remote cold box and a coaxial recondensing, heat exchanger transfer line which is inserted into a cryostat. The working volume of gas is compressed to a high pressure and cooled through cooling means which include a mechanical refrigerator of the regenerator-displacer type. The cooled gas is expanded through a first JT valve to a medium pressure and further cooled. The further cooled medium pressure gas is transferred in a closed coaxial transfer line to a cryostat in which boil-off is recondensed. A second JT valve in the cryostat end of an inner tube coaxially positioned in an outer tube forming the transfer line expands the gas to a lower pressure and forms a liquid-gas mixture. The liquid-gas mixture is passed in heat exchange relation with the boil-off from an inner tube to an outer tube of a coaxial recondensing heat exchanger. The outer surface of the outer tube at the cryostat end of the transfer line has burrs which provide the necessary surface area on which to recondense the boil-off. The gas is transferred back to the cooling means through intermediate channels formed between the outer tube and the coaxially positioned inner tube.
    • 再冷凝器通过远程冷箱和插入低温恒温器的同轴再冷凝换热器输送管线循环冷冻剂气体的工作体积。 将气体的工作体积压缩至高压,并通过冷却装置冷却,冷却装置包括再生器置换器型机械式制冷机。 冷却的气体通过第一JT阀膨胀至中压并进一步冷却。 进一步冷却的中压气体在闭合的同轴输送管线中转移到冷凝器中,在该恒温器中再蒸发。 同轴地位于形成输送管的外管的内管的低温恒温器端中的第二JT阀将气体膨胀到较低压力并形成液态气体混合物。 液体 - 气体混合物与从内管到同轴再冷凝式热交换器的外管的蒸发热交换。 在输送管线的低温恒温器端部的外管的外表面具有毛刺,其提供必要的表面积以重新冷凝该蒸发。 通过形成在外管和同轴定位的内管之间的中间通道将气体转移回冷却装置。