Anest Iwata Corporation

Toshihiro Honma

Toru Sato

Shinji Kawazoe

Masaki Tsuji

Hideyuki Kimura

Ken Yanagisawa

Atushi Fukui

A scroll fluid machine has a stationary scroll and a revolving scroll, each of which has a spiral scroll wrap spiraling from the center side to the outer side. One of the scrolls has an annular outermost wrap having a radius larger than that at the outer end of the spiral wrap of the other scroll. The annular, outermost wrap is the outermost wall, and the scrolls are assembled so that the wrap of the other scroll is disposed in the inner side of the wrap of the one of the scrolls.

Scroll fluid machine

A scroll mounting member for mounting a drive scroll therein is secured to the left end of a drive shaft coupled to a motor. A rotary bearing is fitted on the outer periphery of the scroll mounting member, and its outer periphery is secured to a scroll housing. The scroll mounting member is disposed for rotation in the scroll housing and is secured to the drive shaft. A bearing retainer for holding the rotary bearing is mounted by bolts via a spring in a mounting portion of the scroll housing. The rotary bearing is adjustable in the thrust direction at the scroll housing. By turning bolts, the rotary bearing is either advanced in the thrust direction via the bearing retainer or retreated, via the bearing retainer and a spring, which, together with the bolts, form an adjusting device. A self-lubricating sleeve seal is axially slidably fitted in an end portion of a driven scroll mounting member. A seal plate, of a mirror-finished hard material, is secured to a seal retainer on the cylindrical end side of the sleeve seal. The sleeve seal is pushed against the seal plate by the fluid pressure so that its end is in rotating and sealing contact with the seal.

Scroll fluid apparatus having axial adjustment mechanisms for the scrolls

A scroll mounting member for mounting a drive scroll therein is secured to a left end of a drive shaft coupled to a motor. A rotary bearing is fitted on the outer periphery of the scroll mounting member, and its outer periphery is secured to a scroll housing. The scroll mounting member is disposed for rotation in the scroll housing and is secured to the drive shaft. A bearing retainer for holding the rotary bearing is mounted by bolts via a spring in a mounting portion of the scroll housing such that the rotary bearing is adjustable in the thrust direction at the scroll housing. By turning the bolts, the rotary bearing is advanced or retreated in the thrust direction via the bearing retainer or the bearing retainer and a spring which, together with the bolts, provide adjustment. A self-lubricating sleeve seal is axially slidably fitted in an end portion of a rotation of driven scroll mounting member. A seal plate of a mirror-finished hard material is secured to a seal retainer on the cylindrical end side of the sleeve seal. The sleeve seal is pushed against the seal plate by the fluid pressure so that its end is in rotating and sealing contact with the seal.

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Kanagawa-ken, Japan

Toshihiro Honma