EP0745177A1 - Rotary piston machine (r.p.m) - Google Patents
Rotary piston machine (r.p.m)Info
- Publication number
- EP0745177A1 EP0745177A1 EP95902321A EP95902321A EP0745177A1 EP 0745177 A1 EP0745177 A1 EP 0745177A1 EP 95902321 A EP95902321 A EP 95902321A EP 95902321 A EP95902321 A EP 95902321A EP 0745177 A1 EP0745177 A1 EP 0745177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotary piston
- inner area
- inner chamber
- angles
- machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/10—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F01C1/104—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement
Definitions
- Rotary Piston Machine (R.P.M.)
- the invention refers to a Rotary Piston Machine (R.P.M.) with housing, consisting of an enclosing body with inner surfaces and side parts, which together enclose an inner area and which through the longitudinal central axis of the inner area in at least one of the side-parts an encamped shaft lays, with an eccentric, around which a Rotary Piston (R.P.) is encamped, of a length, equal to that of the inner area and which in cross section has a form, which during rotation of the R.P. makes parts of the R.P. glide along the inner area surface whereby between R.P. and inner area surface, volume changing working chambers are being formed and in respect of the power activities through both parallel axes of the R.P.M. meshing gear wheels can be fixed.
- R.P.M. Rotary Piston Machine
- the movements of the R.P. have been combined from a rotation around the own centre axis (Z), plus a rotation of the centre axis around the longitudinal central axis (M) of the square inner area, in a rotation direction which is opposite to the rotation-direction of the R.P.
- the own centre-axis Z rotates three times around the longitudinal central axis M.
- the touching straights will shift parallel over the inner chamber surfaces, whereby the touching straights with the ribs of the R.P. move in direction of rotation of the R.P. and the touching straights with the flanks of the R.P. move opposite the rotation direction.
- the "free angles" of the square inner area offer possibilities to fix various, for this type of machine common provisions, such as inlet and exhaust ports, with valves or slides, igniting mechanisms, heating elements, fuel injection mechanisms, etc. without hampering the free revolution of the R.P. in the inner area.
- the free angles also offer within reasonable limitations the possibilities to give to the volume changes of the working chambers each desired proportion between the largest and the smallest volume, when constructing applications of these machines.
- the toothing must be in proportion of 3:2 and in reverse 3:4.
- An R.P. which in cross section has a perimeter of an equilateral triangle of constant diameter (constant thickness) is a special realisation in a range of possibilities, which all in cross section have a perimeter of a smoothly closed curve of a constant diameter with three axes of symmetry.
- Such curves occur by drawing from the centre points of three equal and in aequilateral triangel relation placed circles (see fig. 2), hereafter called angle circles (7), tangent circle curves (8) on the back of the two opposite angle circles.
- the found "smoothly closed curves of constant diameter (constant thickness) with three axes of symmetry” can in any position be circumscribed by a square with square sides R and will have a point of contact with each square side.
- cylindrical ribs offer excellent starting points to the constructor of the machine to accomplish effective separation of two working chambers on both sides of a cylindrical rib.
- Every cylindrical rib of the R.P. is over the full length replaced by a cylindrical boring in longitudinal direction
- R.P. is taken away.
- a cylindrical rod (sealing element) (17) is being brought over the full length, with the diameter of the rib cylinder.
- the play between rib and inner chamber surface will close off on the side of the lowest pressure.
- Each cylindrical rib of the R.P. is over the full length replaced by a cylindrical boring in the longitudinal direction (12), whereby the axis of the boring coincides with the axis of the rib-cylinder and whereby the diameter of the boring is greater than the diameter of the rib cylinder.
- a cylindrical rod of the same length as the bore fits freely rotating around its length-axis, which is provided with a levelling over the entire length and to a depth on which the levelling touches the imaginary rib cylinder.
- the sealing element can be capsized with the aid of a suitable form of the free angle or by special conduction strokes in the free angle (18), over an angle until a suitable starting position for the gliding of the flat stroke along the next inner surface.
- Each cylindrical rib of the R.P. is over the full length and the full breadth replaced by a radial groove in longitudinal direction (19), for example rectangled in cross section.
- a radial movable sealing element of the same length which, towards the exterior facing side in longitudinal direction, has the form of a cylindrical surface of 60°, with the radius of a rib cylinder (20).
- This sealing element is being pushed to the exterior with the aid of spring pressure and/or centrifugal force, so that during passing of an inner chamber surface the sealing element touches along the contact straights of the cylinder surface.
- the sealing element is pushed against a side wall of the groove and is held tightly in this position until the pressure difference falls off.
- Sealing elements can be constructed either completely and/or partly solid or hollow.
- FIG. 4 shows a cross-section and a longitudinal section of a technical construction of the invention according to items discussed up till now.
- the central shaft (3) is encamped (12) in the side parts (11) of the housing; the R.P. (2) is encamped on the eccentric (4).
- On the R.P. a gear wheel (8a) is fitted of which the centre coincides with the centre axis of the R.P.
- This gear wheel is meshing a ring gear wheel (8b) with internal gearing, which is firmly connected with the square housing and of which the centre coincides with the longitudinal central axis of the square housing.
- the gear wheel runs completely through the internal gearing, which means that the proportion of the gear wheels is 3 : 4.
- the rotation of the R.P. consists of the resultant of two clean rotations, through which the machine can become totally outbalanced and no free forces of inertia need to remain, for instance with the aid of a flywheel with counter-weight or by letting more machines work on one axis with their eccentricities equally distributed over 360 degrees perimeter.
- R.P.M.s Rotary Piston Machines
- R.P.M.s Rotary Piston Machines
- this type of R.P.M.s it is an attractive quality that possibilities in the free angles for adding of suction and/or pressure valves on the construction exist, without the need to influence the rotation in the housing of the R.P. Even the compression ratio can be chosen within a wide range. This way these machines are applicable as compressor, self- sucking liquid pumps, compressed gas motor, hydraulic motor.
- the R.P.M. offers decisive advantages because of its possible effective play sealings on the spot of the cylindrical ribs.
- the flanks of the R.P. will during the rotation of the R.P. in the square inner area roll along the inner chamber surface in a direction opposite to the direction of rotation of the R.P. and at the same time to a relative small extent slide along the inner chamber surface in a direction which corresponds with the rotation direction of the R.P.
- plays have to be kept to by the construction of the machine between its flanks and the inner area surface .
- flank play sealing consists in principle of a radial groove (27), made in the flank in longitudinal direction of the R.P. (see figure 5). Over the full length of such a groove there is a sealing element (28), which by centrifugal force or spring pressure (29) stretches up till outside the surface of the flank. When the flanks are rolling and gliding, other parts of the flanks will always touch the inner chamber surface.
- flank play sealing elements during off- rolling of an R.P. flank become consecutively merely for a short time operational, and an operating sealing element only slides over a limited distance across an inner chamber surface, a rather strong radial spring pressure on the sealing element can be applied without much loss, which is of utter importance, in view of the possibilities of applying the invention at processes with high pressures and temperatures.
- a side area play sealing can be fixed (figure 5) (30) according to a known technique which consists of one or more parallel bent strips, for example rectangled in cross section, in fitting grooves, which through spring pressure, for instance through a corrugated leaf spring on the bottom of the groove stretches till outside of the side surface, but can be completely pressed into the groove.
- these grooves can go through and eventually end in for instance cylindrical discs (22) which lie against the sealing .
- Figure 6 indicates the principle draft of an execution type of the R.P.M. according to the invention, with a system applied and already known in the technique of radial valve ports (47) in the R.P. and grooves (48) in the eccentric, which are formed and positioned in such a way that during rotation of the R.P. around the eccentric in the cylindrical touching plane the four working chambers successively and periodically remain in connection with the grooves in the eccentric and the connected channels (49) in the central shaft for the supply (T) or the discharge (A) of gasy or liquid matter.
- the supply channels (T) situated in the front half of the R.P. in longitudinal direction, whereby the outlet channels (A) are situated in the back half of the R.P. in longitudinal direction; this is also the case with the supply- and outlet-channels in the central shaft and eccentric.
- a machine furnished like this or in a similar way, can in principle work as compressed gas engine, as compressor, as self-suction liquid pump or as hydraulic motor, well or not in combination with functions affixed in the free angles of the machine .
- Reversal of the direction of rotation leads to exchange in the supply and discharge channels; exchange of supply- and discharge channels leads to reversal of the direction of rotation.
- FIGs 7, 8 and 9 indicate global sketches of an application of the invention as combustion engine of the type "liquid cooled four-stroke engine". In the following legend of these sketches, the same numbering has been kept up as for parts which are equivalent to the parts of the preceding figures 1 to 6.
- Equal constructions can be obtained when starting from the rotary piston machine, of which the cross section has a circumference of fluently closed curves of a constant diameter R, with respectively five, seven, nine etc axes of symmetry, rotatable fitting in respective regular hexagon, octagon, decagon etc inner areas, in general: rotary piston machines of which the cross section the circumference have of fluently closed curves of a constant diameter R and 2n-l (n > 2) axis of symmetry, rotatable fitting in enclosing bodies with 2n inner chamber surfaces which together form regularly prismatic inner areas of which the inscribed cylinders have the diameter R.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9301867 | 1993-10-29 | ||
NL9301867A NL9301867A (en) | 1993-10-29 | 1993-10-29 | Rotary piston machine. |
PCT/NL1994/000259 WO1995012053A1 (en) | 1993-10-29 | 1994-10-25 | Rotary piston machine (r.p.m) |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0745177A1 true EP0745177A1 (en) | 1996-12-04 |
Family
ID=19863064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95902321A Withdrawn EP0745177A1 (en) | 1993-10-29 | 1994-10-25 | Rotary piston machine (r.p.m) |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0745177A1 (en) |
NL (1) | NL9301867A (en) |
WO (1) | WO1995012053A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1005904C2 (en) * | 1997-04-25 | 1998-10-27 | Pieter Adolf De Geus | Rotary piston machine. |
ES2292326B1 (en) * | 2005-11-23 | 2009-04-01 | Rosa Maria Quicler Carballido | INTERNAL COMBUSTION HYPOCICLOID ROTATING MOTOR. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3332403A (en) * | 1964-06-04 | 1967-07-25 | Herman H Reller | Rotary internal combustion engine |
US3998054A (en) * | 1975-04-16 | 1976-12-21 | Whitestone Bruce G | Rotary mechanism with improved volume displacement characteristics |
DE2951042A1 (en) * | 1979-12-19 | 1981-08-27 | Gerd Prof. Dr.-Ing. 3257 Springe Kiper | Positive-displacement engine with constant-dia. cross-section rotor - has parallel-pair casing walls and oldham-coupling or crank transmission |
US4462774A (en) * | 1982-09-27 | 1984-07-31 | William Hotine | Rotary expander fluid pressure device |
DE3641146A1 (en) * | 1986-12-02 | 1988-06-16 | David Kunkel | Rotary engine with combustion spaces of any design |
US5127377A (en) * | 1990-12-06 | 1992-07-07 | Yang Chung Chieh | Rotary machine with oval piston in triangular chamber |
-
1993
- 1993-10-29 NL NL9301867A patent/NL9301867A/en not_active Application Discontinuation
-
1994
- 1994-10-25 EP EP95902321A patent/EP0745177A1/en not_active Withdrawn
- 1994-10-25 WO PCT/NL1994/000259 patent/WO1995012053A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9512053A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1995012053A1 (en) | 1995-05-04 |
NL9301867A (en) | 1995-05-16 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19951027 |
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17Q | First examination report despatched |
Effective date: 19980113 |
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Effective date: 20000104 |