Rotary expansible chamber devices – Interengaging rotating members – Non-parallel axis
Patent
1999-03-01
2000-10-24
Denion, Thomas
Rotary expansible chamber devices
Interengaging rotating members
Non-parallel axis
418 68, F04C 1800
Patent
active
06135743&
DESCRIPTION:
BRIEF SUMMARY
This invention relates to mechanical engineering and may found use in applications such as pumps and other machines using varying-capacity working chambers. Of the rotary-piston mechanisms with varying-capacity chambers, practical use has a Wankel mechanism. One of its disadvantages is a need for counterbalances mounted on rotor-carrying shaft because while rotating, shaft's center-of-gravity moving along the circular trajectory.
It is known a rotary-piston mechanism (Spherical engine with rotating pistons, Japan pat. claim No 4744565 class 51 B 61, F01 C 3100, pub. in 1972) with all parts' centers-of-gravity staying motionless during the work. Structurally it is designed in the form of a housing with a spherical chamber accommodating a Hooke joint having shafts mounted at an angle with respect to each other. Cruciform of the joint is designed in the form of a disk and forks of shafts' have the form of a half-disks. Surfaces of the forks and the cruciform define four working chambers with capacity changing twice per revolution. Said mechanism has following disadvantages: pairwise-parralel character of working chambers' following with one pair of chambers' 90 degrees phase of rotating shift relative to another and their shape, as a result of which every chamber's cavity extending about 180 degrees in direction of rotation. For this cause diametrical plane of spherical chamber of housing where shafts' axles of symmetry are located and intersecting, at every moment of time is threaded by cavities of two or four working chambers. It principally limits possibilities to reduce a hydrodynamic resistance of this mechanism.
The present invention aims to reduce hydrodynamic resistance multiply.
This goal may be achieved by giving to a housing a shape of disc with through hole with field that is not threaded by cavities of working chambers of rotary-piston group because its design is based on modified Hooke joint.
In known Hooke joint each one of two cruciform's axles is connected with shaft's fork by two articulated joints. Members of articulated joint are located: two sleeves on each shaft's fork and two journals on the end faces of each cruciform's axle. This rotary-piston mechanism is based on kinematic scheme of a Hooke joint. In accordance with this scheme both cruciform's axles have one journal of articulated joint each, that are located in the central parts of axles' of crusiform, spatially integrated and joined each with one sleeve of cruciform and said sleeves are designed as arc-shaped half-sleeves. Cruciform has spherical shape. Journals of articulated joints of axles' of said cruciformwith with shafts' has concave shape of rotating. Intersecting in two diametrically opposite places they girdle spherical contour of the cruciform along the diametrical lines in planes that are positioned at an angle with respect to each other. Arc-shaped half-sleeves are formed by outer spherical surface and by inner spherical surface of rotating that repeats inner concave surface of rotating and is complementary to it and by surface of longitudinal section of sleeve. Cruciform and arc-shaped half-sleeves are located in through hole of disc-shaped housing and inner surface of said hole has shape of spherical belt with instant or varying width.
Cruciform accommodates 4 chambers, each of them defines by one of two concave cruciform's surfaces of rotating; by part of concave complementary surface of rotating of one arc-shaped half-sleeve; by surface of longitudinal section of another sleeve and by inner surface of inner spherical belt of through hole in the housing.
Character of chambers' following during the rotation is sequential and cavity of every chamber in direction of rotation extending little less than 90 degrees. For this reason diametrical plane of inner spherical surface of through hole in housing, where shafts' axles of symmetry are located and intersecting for four moments per revolution is not threaded by cavities of cambers of rotor-piston group because it is overlapped by members of rotary-piston group. If ment
REFERENCES:
patent: 2678003 (1954-05-01), Gerken
patent: 2727465 (1955-12-01), Dutrey
patent: 4021158 (1977-05-01), Bajulaz
Keikov Ilja
Keikov Juri
Denion Thomas
Trieu Thai-Ba
LandOfFree
Rotary piston pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotary piston pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary piston pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1958074