| 摘要 |
PURPOSE:To sufficiently cool both inside damper and torque tube by composing a cooling circuit cooling the inside damper after the low temperature side of a torque tube is cooled by a refrigerant passed through a coil container wherein the high temperature side of the torque tube is cooled hereinafter. CONSTITUTION:An inside damper 11 is provided with cooling ducts 12 and the opposite ends of the damper are supported by the middle section of a torque tube 3. The damper cooling ducts 12 are composed so that a duct 12a serving as a refrigerant flowing from sheet ends, 6a side to 6b side and a duct 12b serving as a refrigerant passage flowing from shaft ends, 6b side to 6a side may become a parallel and opposed flow. The duct 12a receives the refrigerant passed from a coil container 2 to a low temperature side gas passage 13a located at the shaft end 6a side of the torque tube 3. An outlet at the shaft end 6b side after cooling the inside of the damper 11 is connected to a piping 10b through a high temperature side gas passage 14b located at the 6b side of the torque tube 3. In this way, both torque tube and damper will sufficiently be cooled. |
