公开(公告)号：WO1989003480A2

公开(公告)日：1989-04-20

申请号：PCT/US1988003502

申请日：1988-10-06

Applicant: HELIX TECHNOLOGY CORPORATION

Inventor： HELIX TECHNOLOGY CORPORATION ,  HIGHAM, Graham, J. ,  PRUITT, Gerald, R. ,  MORRIS, Ronald, N. ,  HEGER, Frank ,  LIVINGSTONE, James ,  TORMEY, David, P.

IPC: F04B35/04

CPC classification number: F16F7/116 ,  F04B35/045 ,  F25B9/14 ,  F25B2309/001 ,  F25B2500/13 ,  H02K33/06

Abstract: A linear motor compressor within a cryogenic refrigerator wherein the compressor space, within which a gaseous fluid is alternately compressed and expanded, is formed by a stationary piston (11) and a reciprocating armature (10) that is concentric about the piston. The armature is supported along a clearance seal with the stationary piston. An axial bore (14) along the stationary piston conveys gaseous fluid from the compression space (24) to a displacer within the cold finger of the cryogenic refrigerator. An isolator for reducing transmission into and out of the compressor comprising a dynamic absorber (40) and flat springs (61, 71) mounted with a damping material (95, 96) between the compressor and a mounting frame. A sensor (80) for detecting the position of the armature utilizes a target magnet (81) whose magnetic flux lines are decoupled from the flux lines generated about the coil.

Abstract translation: 低温冷冻机内的线性电动机压缩机，其中气体流体被交替地压缩和膨胀的压缩机空间由静止活塞（11）和与活塞同心的往复式电枢（10）形成。 电枢沿着与静止活塞的间隙密封件支撑。 沿着静止活塞的轴向孔（14）将气态流体从压缩空间（24）传送到低温冰箱的冷指状物内的置换器。 一种用于减少进入和离开压缩机的传动装置的隔离器，包括一个在压缩机和安装架之间安装有阻尼材料（95,96）的动态吸收器（40）和平板弹簧（61,71）。 用于检测电枢位置的传感器（80）利用目标磁体（81），其磁通线与绕线圈产生的磁通线分离。

公开(公告)号：WO1990004144A1

公开(公告)日：1990-04-19

申请号：PCT/US1989004393

申请日：1989-10-03

Applicant: HELIX TECHNOLOGY CORPORATION

Inventor： HELIX TECHNOLOGY CORPORATION ,  LIVINGSTONE, James ,  HIGHAM, Graham, J. ,  PRUITT, Gerald, R.

IPC: F25B09/00

CPC classification number: F25B9/14 ,  F25B2309/001 ,  F25B2309/1428 ,  F25B2500/13 ,  G05D23/1906 ,  G05D23/20

Abstract: In a cryogenic refrigerator utilizing a linear drive motor, a temperature control system controls the displacement of an armature reciprocating at a fixed frequency to adjust the operating temperature of a working fluid at the cold end of a cold finger. Linear drive motors using dynamic absorbers to reduce vibration operate within the narrow frequency range to which the absorber is tuned. Controlling the maximum displacement of the armature used to compress the working fluid results in the ability to adjust the temperature at the cold end of the refrigerator without altering the frequency of operation.

Abstract translation: 在利用线性驱动马达的低温冰箱中，温度控制系统控制以固定频率往复运动的电枢的位移，以调节冷手指冷端处的工作流体的工作温度。 使用动态吸收器减少振动的线性驱动电机在吸收器调谐到的窄频范围内工作。 控制用于压缩工作流体的电枢的最大位移导致在不改变操作频率的情况下调节冰箱冷端的温度的能力。