公开(公告)号：US4906266A

公开(公告)日：1990-03-06

申请号：US287074

申请日：1988-12-20

申请人： David C. Planchard ,  Paul D. Lanoue

发明人： David C. Planchard ,  Paul D. Lanoue

IPC分类号： F17C3/08 ,  F17C13/10 ,  G01R33/3815

CPC分类号： G01R33/3815 ,  F17C13/10 ,  F17C3/085 ,  F17C2223/0161 ,  F17C2227/0302 ,  F17C2260/032

摘要： When a refrigerator unit is removed, inner surfaces of a refrigeration unit housing extending into a cryogenically cooled system are heated. The method is performed in such a way as to prevent the external atmosphere from coming in contact with the housing inner surfaces, thus avoiding the problem of ice formation within the housing. A heat gun is used in conjunction with an apparatus which fits into the housing and distributes heated gas, such as nitrogen, from the heat gun to different parts of the housing in relative quantities. The inner surfaces are brought to the same temperature in the same time allowing the housing to be cleaned before the refrigeration unit is replaced. The apparatus guiding the heated gas is mounted on the outside of the housing and includes stops on its supports to keep the apparatus from making contact with the inner surfaces of the housing. Spring loaded temperature sensors attach to the apparatus at different points and make contact with the inner end surfaces of the housing, allowing the housing temperature to be monitored during the heating process.

摘要翻译： 当除去冰箱单元时，被加热到冷却单元壳体的延伸到低温冷却系统中的内表面。 该方法以防止外部气氛与壳体内表面接触的方式进行，从而避免了壳体内的冰层形成问题。 热枪与装配在壳体中的装置一起使用，并将加热气体（例如氮气）从热枪分配到相对数量的壳体的不同部分。 内表面在同一时间达到相同的温度，允许在更换制冷单元之前清洁外壳。 引导加热气体的装置安装在壳体的外部，并且在其支撑件上包括止动件，以使装置不与壳体的内表面接触。 弹簧加载温度传感器在不同点附接到设备，并与壳体的内端面接触，允许在加热过程中监测壳体温度。

公开(公告)号：US4956974A

公开(公告)日：1990-09-18

申请号：US472818

申请日：1990-01-31

申请人： David C. Planchard ,  Paul D. Lanoue

发明人： David C. Planchard ,  Paul D. Lanoue

IPC分类号： F17C3/08 ,  F17C13/10 ,  G01R33/3815

CPC分类号： F17C13/10 ,  F17C3/085 ,  G01R33/3815 ,  F17C2221/038 ,  F17C2223/0161 ,  F17C2250/0439 ,  F17C2260/032

摘要： When a refrigerator unit is removed, inner surfaces of a refrigeration unit housing extending into a cryogenically cooled system are heated. The method is performed in such a way as to prevent the external atmosphere from coming in contact with the housing inner surfaces, thus avoiding the problem of ice formation within the housing. A heat gun is used in conjunction with an apparatus which fits into the housing and distributes heated gas, such as nitrogen, from the heat gun to different parts of the housing in relative quantities. The inner surfaces are brought to the same temperature in the same time allowing the housing to be cleaned before the refrigeration unit is replaced. The apparatus guiding the heated gas is mounted on the outside of the housing and includes stops on its supports to keep the apparatus from making contact with the inner surfaces of the housing. Spring loaded temperature sensors attach to the apparatus at different points and make contact with the inner end surfaces of the housing, allowing the housing temperature to be monitored during the heating process.

公开(公告)号：US4932428A

公开(公告)日：1990-06-12

申请号：US172558

申请日：1988-03-24

申请人： David C. Planchard ,  Robert Pandorf ,  Anthony Guerra

发明人： David C. Planchard ,  Robert Pandorf ,  Anthony Guerra

IPC分类号： F16K17/04 ,  F25B41/04

CPC分类号： F25B41/04 ,  F16K17/0433 ,  Y10T137/0379 ,  Y10T137/7929

摘要： The present invention discloses a relief valve containing a poppet valve which is designed to eliminate resonant chattering within the relief valve. The poppet valve contains a plurality of holes of sufficient size and number within the truncated portion of the valve to maintain a fluid pressure difference of about zero between the area within the internal cylinder of the poppet valve and the area within the valve housing about the truncated portion of the poppet cavity.

摘要翻译： 本发明公开了一种包含提升阀的安全阀，其被设计成消除安全阀内的共振颤动。 提升阀包括在阀的截头部分内具有足够尺寸和数量的多个孔，以在提升阀的内筒内的区域与阀壳体内的区域之间保持约零的流体压力差约为截断的 提花腔的一部分。

公开(公告)号：US4655046A

公开(公告)日：1987-04-07

申请号：US757003

申请日：1985-07-19

申请人： Michael J. Eacobacci ,  David C. Planchard

发明人： Michael J. Eacobacci ,  David C. Planchard

IPC分类号： F04B37/08 ,  B01D8/00

CPC分类号： F04B37/08 ,  Y10S417/901

摘要： An exhaust port from a cryopump vacuum vessel leads to an exhaust valve. The valve is protected from contamination by a filter standpipe which extends from the exhaust port into the vacuum vessel and which is open at its end opposite to the exhaust port. The standpipe is of porous material which allows the free flow of gas, water, and liquid cryogens therethrough while retaining contaminating debris within the vacuum vessel. The filter conduit is of screen formed into a cylinder. One end is tapered and pressed into the exhaust conduit. The screen cylinder is stopped in the exhaust conduit by a circumferential ridge.

摘要翻译： 来自低温泵真空容器的排气口通向排气阀。 该阀被防止被从排气口延伸到真空容器中的过滤器立管的污染物，并且其在与排气口相对的端部处是敞开的。 立管是多孔材料，其允许气体，水和液体冷冻剂自由流过，同时保持真空容器内的污染物。 过滤器管道被形成为气缸。 一端锥形并压入排气管。 丝网滚筒通过周向脊部停止在排气管道中。