Abstract: There is disclosed a high-pressure compressor comprising a compression mechanism for reciprocating/driving a piston with respect to a conventional cylinder by rotation of a motor and compressing an operating fluid sucked by this driving to generate the high-pressure operating fluid according to improvements in a piston shape, positions of a cylinder operation surface and the piston, specifics shapes of the cylinder and piston, and connecting constitution of the piston to a connecting rod, which solves problems such as occurrence of wear on a cylinder inner surface by displacement of the piston, size enlargement by an increase of a removal capacity, difficulty in processing the piston and connecting rod, and a large top clearance.

Abstract: There is provided a multistage high pressure compressor in which a rotor is supported with respect to a rotating shaft of an electric motor and which can suppress a torque fluctuation of the electric motor and achieve a stable operation of the electric motor. A fly wheel is attached to a lower end of the rotating shaft of the electric motor, and the fly wheel supports the rotor of the electric motor with respect to the rotating shaft. The fly wheel is connected to the lower end of the rotating shaft of the electric motor by a bolt, and an extension of a detent key between the rotating shaft of the electric motor and the rotor of the electric motor is inserted into the fly wheel. Moreover, there is provided a multistage high pressure compressor achieving improved sealing between a cylinder and members surrounding the periphery thereof, which is capable of realizing a simplified processing of the cylinder and an easy assembly process.

Abstract: A method for punching an insulating film is composed of using plural divided punches having a clearance between each two of the divided punches. The clearance absorbs thermal expansion of the divided punches caused by receiving a heat from a heater. A punched insulating film is stuck to a lead frame by being pressed between the divided punches and the heater.

Abstract: A multiple cylinder rotary compressor according to the present invention comprises a driving shaft, cylinders concentric to the driving shaft, rotors driven by eccentric portions of the rotary shaft to rotate along the inner circumferential surface of the cylinders, vanes for dividing each of the cylinders into a compression side and a suction side, a partition plate for separating the cylinders from each other, and a control through-hole for connecting the cylinders with each other so that a refrigeration capacity is controlled.

Abstract: A method for punching an insulating film is composed of using plural divided punches having a clearance between each two of the divided punches. The clearance absorbs thermal expansion of the divided punches caused by receiving a heat from a heater. A punched insulating film is stuck to a lead frame by being pressed between the divided punches and the heater.