Scroll fluid apparatus having axial adjustment mechanisms for the scrolls

A scroll fluid apparatus of a rotating drive/driven scroll type comprising:

• a drive scroll and a driven scroll, the drive and driven scrolls including opposing scroll plates and being driven in a respective housing such that wraps thereof compress fluid and discharge compressed fluid to the outside,
• a scroll adjustment mechanism for adjusting engagement between the wraps and the opposing scroll plates,
• a scroll mounting member, which rotates together with the driven scroll, disposed on the driven scroll, and
• a bearing fitted to the outer periphery of the scroll mounting member and the outer periphery of the bearing being secured to the housing of the driven scroll so that the scroll mounting member rotates together with the driven scroll,
• wherein the housing of the driven scroll has a bearing retainer which urges the bearing against the housing in a thrust direction, and
• wherein the housing of the driven scroll is disposed between the bearing retainer and the rear surface of the driven scroll plate and is provided with an elastically displaceable member such that urging the bearing against the housing of the driven scroll elastically displaces the member in the thrust direction, and the driven scroll is made adjustable in the thrust direction.

A scroll fluid apparatus of a rotating drive/driven scroll type comprising:

• a drive scroll and a driven scroll, the scrolls including opposing scroll plates and being driven in a respective housing such that wraps thereof compress fluid and discharge compressed fluid to the outside,
• a scroll adjustment mechanism for adjusting engagement between the wraps and the opposing scroll plates,
• a fan blade formed on the rear surface of at least one of the opposing scroll plates,
• a scroll mounting member, secured to a rotary shaft, disposed between the drive scroll and the housing and rotating together with the rotary shaft and the drive scroll, the scroll mounting member having opening holes for feeding in cooling air such that the fan blade rotates along with the rotation of the drive scroll and conveys the cooling air to the outside from opening holes formed at the outer periphery of the housing,
• a bearing fitted between the housing and the scroll mounting member which supports the rotary shaft of the drive scroll, a deformable member on the housing adjacent to the bearing, and
• a bearing retainer which holds the bearing and which is mounted so that, by pushing the bearing against the deformable member on the housing, the drive scroll is made adjustable in the thrust direction.

A scroll fluid apparatus of a rotating drive/driven scroll type comprising:

• a drive scroll and a driven scroll, the scrolls including opposing scroll plates and being driven in a respective housing such that wraps thereof compress fluid and discharge compressed fluid to the outside,
• a scroll adjustment mechanism for adjusting engagement between the wraps and the opposing scroll plates,
• a fan blade formed on the rear surface of at least one of the opposing scroll plates,
• a scroll mounting member, secured to a rotary shaft of the driven scroll which rotates along with the driven scroll, disposed between the driven scroll and the housing and rotating together with the rotary shaft and the driven scroll, the scroll mounting member having opening holes for feeding in cooling air such that the fan blade rotates along with the rotation of the driven scroll and conveys the cooling air to the outside from opening holes formed at the outer periphery of the housing,
• a bearing fitted between the housing and the scroll mounting member which supports the rotary shaft of the driven scroll, a deformable member on the housing adjacent to the bearing, and
• a bearing retainer which holds the bearing and which is mounted so that, by pushing the bearing against the deformable member on the housing, the driven scroll is made adjustable in the thrust direction.