公开(公告)号：US09587860B2

公开(公告)日：2017-03-07

申请号：US13947282

申请日：2013-07-22

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： JuHun Rhee ,  Kyung-Hwan Lee ,  Bum-Seok Hyun ,  Eunsup Sim

IPC: F25B9/14

CPC classification number: F25B9/14 ,  F25B2400/073

Abstract: A cryocooler, includes a cylinder filled with gas. A piston rectilinearly reciprocates inside of the cylinder and compresses or expands the gas. A connecting rod has a first side coupled to the piston and moves with the piston, and a second side having a first thread along an outer circumference thereof. A linear motor rectilinearly reciprocates a motor shaft toward the connecting rod in accordance with a control signal. A sleeve has two open sides, so that an end portion of the motor shaft can be supported by and inserted in one open side, and the second side of the connecting rod can be inserted in the other open side, and an inner circumference of the sleeve is formed with a second thread that engages with the first thread of the connecting rod and rotates to adjust a distance between the motor shaft and the connecting rod.

Abstract translation: 一个低温冷却器包括一个充满气体的气瓶。 活塞在气缸内部直线往复运动并压缩或膨胀气体。 连杆具有联接到活塞并与活塞一起移动的第一侧，并且具有沿其外圆周的第一螺纹的第二侧。 线性电动机根据控制信号使马达轴向连杆往复运动。 套筒具有两个敞开的侧面，使得电动机轴的端部能够被支撑并插入一个开口侧，并且连杆的第二侧可以插入另一个开口侧，并且连接杆的内周 套筒形成有与连杆的第一螺纹接合的第二螺纹并且旋转以调节电动机轴和连杆之间的距离。