Air supply apparatus

An air supply apparatus comprising a stator fixed to a motor frame, a rotor which is fixed to a motor shaft and rotated in said stator, a orbiting scroll which is operated by a mechanism shaft, a stationary scroll for forming a compression space between the stationary scroll itself and said orbiting scroll, and a rotation-restraint member for orbiting said orbiting scroll, in which said motor shaft and said mechanism shaft are connected to each other, said mechanism shaft passes through said orbiting scroll and said stationary scroll, said mechanism shaft is held by opposite ends of said orbiting scroll, wherein a diameter of said mechanism shaft is 1.0 to 1.5 times greater than that of said motor shaft.

An air supply apparatus comprising a stator fixed to a motor frame, a rotor which is fixed to a motor shaft and rotated in said stator, a orbiting scroll which is operated by a mechanism shaft, a stationary scroll for forming a compression space between the stationary scroll itself and said orbiting scroll, and a rotation-restraint member for orbiting said orbiting scroll, in which said motor shaft and said mechanism shaft are connected to each other, said mechanism shaft passes through said orbiting scroll and said stationary scroll, said mechanism shaft is held by opposite ends of said orbiting scroll, wherein said orbiting scroll is held by said mechanism shaft using two bearings, a shaft seal is provided between said two bearings.

An air supply apparatus comprising a stator fixed to a motor frame, a rotor which is fixed to a motor shaft and rotated in said stator, a orbiting scroll which is operated by a mechanism shaft, a stationary scroll for forming a compression space between the stationary scroll itself and said orbiting scroll, and a rotation-restraint member for orbiting said orbiting scroll, in which said motor shaft and said mechanism shaft are connected to each other, said mechanism shaft passes through said orbiting scroll and said stationary scroll, said mechanism shaft is held by opposite ends of said orbiting scroll, wherein said orbiting scroll is held by said mechanism shaft using a bearing, said air supply apparatus further comprises a pre-load spring for pressing said bearing in a direction in which said orbiting scroll is separated from said stationary scroll.

An air supply apparatus comprising a stator fixed to a motor frame, a rotor which is fixed to a motor shaft and rotated in said stator, a orbiting scroll which is operated by a mechanism shaft, a stationary scroll for forming a compression space between the stationary scroll itself and said orbiting scroll, and a rotation-restraint member for orbiting said orbiting scroll, in which said motor shaft and said mechanism shaft are connected to each other, said mechanism shaft passes through said orbiting scroll and said stationary scroll, said mechanism shaft is held by opposite ends of said orbiting scroll, wherein a orbiting scroll lap having a predetermined height stands on one of surfaces of said orbiting scroll, a boss portion stands on a center portion of said orbiting scroll lap, a lap-reinforcing portion is formed between an outer peripheral surface of said boss portion and said orbiting scroll lap, said lap-reinforcing portion is provided from a center-side end of said orbiting scroll lap by a predetermined length at a height lower than said orbiting scroll lap.

An air supply apparatus comprising a stator fixed to a motor frame, a rotor which is fixed to a motor shaft and rotated in said stator, a orbiting scroll which is operated by a mechanism shaft, a stationary scroll for forming a compression space between the stationary scroll itself and said orbiting scroll, and a rotation-restraint member for orbiting said orbiting scroll, in which said motor shaft and said mechanism shaft are connected to each other, said mechanism shaft passes through said orbiting scroll and said stationary scroll, said mechanism shaft is held by opposite ends of said orbiting scroll, wherein a stationary scroll lap having a predetermined height stands on one of surfaces of said stationary scroll, an outer peripheral-side end and a center-side end of said stationary scroll lap are provided with ribs, each of said ribs is formed by further extending said stationary scroll lap, and a height of said rib is lower than that of said stationary scroll lap.