| 摘要 |
PURPOSE:To prevent liquid and oil from being sucked into a compressor through a suction pipe, and to restrain the compressor from vibrating, by disposing the suction pipe in the vicinity of a fan, and by fixing a blance weight integrally incorporated with a fan to one end part of a crankshaft. CONSTITUTION:A balance weight having a weight section 15a, fan attaching screw holes 15b and a gas vent hole 15c, is secured, by means of screws 16, to a crank eccentric section 6b in the upper section of a crankshaft 6 which is secured in its lower section with an oil pump 7 and a separator 7a. Further, a fan 17 is disposed in the vicinity of a suction pipe 12, and is secured to the balance weight by means of bolts 18. When an electrical motor 3 is energized, the crankshaft 6 intengrally incroporated with a rotor in the motor 3 is rotated so that pistons 9 are riciprocated by means of a cam 8 to compress gas. Further, the balance weight may restrain the compressor from vibrating while the fan 17 blows out return gas to prevent liquid and oil from being sucked into through the suction pipe 12. |
