DE1803362A1 - Rotary piston machine - Google Patents

Description

FATH If T A. WTT A LT

»Π ** ing. B. HOLZEB

89 AUOSBURO

at·""

M.

Augsburg, October 15, 1968

National Research Development Corporation, Kingsgate House, 66-74-, Victoria Street, London S.W.1, England

Rotary piston machine

The invention relates to rotary piston machines.

Rotary piston machines according to an older proposal erjiiögliclieii between an eotor and the one surrounding it Housing provides a simple and effective seal so that operating fluid leaks can be kept within acceptable limits.

Different embodiments of the rotary piston machine

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according to the older proposal consist of a housing, a shaft with an inclined shaft part and with a substantially disk-shaped, coaxially placed on the inclined shaft part via a bearing Rotor, which the latter can rotate independently of the shaft due to the bearing. The housing has at least an alternately narrowing and widening in the longitudinal direction, encompassing part of the rotor Ring channel on. By interposing a suitable gearbox between the rotor and the shaft the rotor a swiveling movement running in the direction of rotation imparted so that between the rotor and the housing a plurality of size upon rotation of the rotor changing spaces is formed. By such an arrangement, individual points of the rotor are each in close proximity to the housing kept, whereby between the individual rooms each corresponding Sealing surfaces are formed.

The object of the invention is to be achieved in rotary piston machines on the one hand without the use of a gear a movement of the rotor similar to the above-mentioned movement and on the other hand between a sufficient seal between the rotor and the housing

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to achieve without this corresponding elastic Seals are required.

In order to achieve this object, a rotary piston machine with a rotor mounted in a housing according to the invention is characterized in that the essentially disk-shaped rotor is articulated to two mutually inclined shafts around diametrically opposed axes in such a way that the eotor is driven by the two shafts Such a movement is imposed that the one diametrical axis rotates in a plane perpendicular to the one shaft and the other diametrical axis rotates in a plane perpendicular to the other shaft, that furthermore in the housing a part of the is formed rotor encompassing annular channel, and that finally yes number forms the rotor together with the housing a multiplicity of upon rotation of the rotor in size changing rooms.

According to a further solution to the above-mentioned object, a rotary piston machine is included in one Housing-mounted rotor according to the invention characterized in that that the essentially disc-shaped rotor with two mutually inclined shafts each separately

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is articulated that, furthermore, the joint axis assigned to one shaft is assigned to that assigned to the other shaft Joint axis is arranged at right angles that further in the housing an alternating in the circumferential direction constricting and widening, a part of the rotor encompassing hanging channel is formed and that the Together with the housing, the rotor forms a multiplicity of spaces which change in size when the rotor rotates.

According to a preferred embodiment of the invention, the rotor is connected to the two shafts via trunnions separately connected.

The housing of the rotary piston machine according to the invention preferably consists of two rotatable with respect to one another Housing parts, so that the angle enclosed by the two shafts can be changed by such a rotation is.

According to yet another embodiment of the invention, two are connected to one another via a common shaft Rotors provided.

Several exemplary embodiments are in the drawings

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υηά are described in more detail below. JEs represent ι

1 shows a schematic longitudinal section

a rotary piston machine according to the invention,

ig. 2 is a schematic side view

of an eotor of the type shown in FIG. 1 Rotary piston machine according to the invention,

Pig. 5 is a schematic end view

of said eotor, in the direction of arrow A in Pig. 2 seen

Pig. 4 a schematic longitudinal section,

which natch Pig the inner surfaces of the housing of the rotary piston machine. Λ shows

Pig. 5 is a schematic representation of a

Universal joint to explain the invention,

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Figure 6 shows a schematic longitudinal section

a further embodiment of a machine housing according to the invention,

Fig. 7 © is a schematic side view of a

rotating basket machine according to the invention with two rotors,

Fig. 8 is a schematic longitudinal section of the

Rotary piston machine according to Fig. 7 »

Fig. 9 is a schematic, for explanation

the geometry of the inner surfaces of a rotor housing of the rotating basket machine according to Fig. 7 serving representation,

Fig. 10 is a schematic representation of the

said housing inner surfaces in the direction of arrow B in FIG. 9 seen,

Figure 11 is one of Figure 3 of the drawings

similar · front view of a rotor of the rotary piston machine shown in FIG according to the invention,

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ORIGINAL INSPECTED

Fig. 12 is a partial section along the

Plane XII-XII in Fig. 11, in the direction of the arrow seen, and

Fig. 13 is a side view in the direction of

Arrow O des in Pig. 11 shown rotor. ää

In the rotary piston machine according to the invention shown in Fig. 1 of the drawings, the one is central The disk-like rotor 1 having an opening is housed in a housing which consists of two mirror-image housing end parts 2, 3 consists, the peripheral edges of a Housing ring 4 are connected to one another, the latter having the shape of an inclined towards one side tapered spherical casing ring · so that the housing end parts 2, 3 are inclined to each other. The housing ™ end parts 2, 3 each have a central hub part spherical shell surface connecting with a flat end face on, from which the latter flat end faces extend radially outward, the corresponding surfaces of the two housing end parts 2, 3 face one another. The disc-shaped one Rotor 1 has one on each of its two end faces

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the central rotor opening encompassing spherical casing ring or 6, the radius of which is related to the same center point as that of the spherical shell partial surfaces of the housing and which, together with these housing surfaces, close off a space defined by the outer peripheral surfaces the spherical casing rings 5, 6 »also the one another opposite end faces of the two housing end parts 2, 3 and finally through the inner circumference of the housing ring 4 is limited. This closed space has the shape of an alternating circumferential direction narrowing and widening annular channel, in which the radially outer part of the disk-shaped Rotor 1 is guided during the rotor rotation.

The central hub parts of the two housing end parts 2, 3 each have a bearing 7 and 8, respectively, which each receive a shaft 9 or 10. The two waves and 10 are each also lying in the same plane, corresponding to the inclination of the two housing parts 2, 3 inclined to each other, with their axes to the respective associated flat inner housing end faces, respectively run vertically.

, The within the housing 2, 3 adjoining each other

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ι " ¹¹ ' ¹ ' ¹ " ■ - ■ ■ " ¹¹¹ IF ¹ »:;: τ!

Ends of the two shafts 9, 10 are each fork-shaped educated. The fork approaches of these shaft ends run on both sides of the axis of the shaft in question, respectively parallel to one another and together with end caps 11 each form bores for receiving pivot pins.

Within its central opening, the eotor 1 has pivot pins 12, 13, 14 and 15 which run radially and are offset from one another by 90 °, as shown in particular in FIG. 3. 3 of the drawings can be seen. Diametrically opposed pivot pins 12, 14, or 13j 15 are each mounted in the bores of the fork extensions of the shaft 9 and the shaft 10, so that the fork extensions of the two shafts are offset from one another by 90 °. The pivot pins 12, 14 are connected to the shaft 9 and the pivot pin 13 »15 are connected to the shaft 10, ■ so that the axes of the pivot bearing achssenkrechte diameter of the form * ßotors. 1 In this way, a movement is imposed on the rotor 1 by the two shafts, in which one of these diametrical axes rotates in a plane perpendicular to the one shaft and the other diametrical axis rotates in a plane perpendicular to the other shaft. The arrangement therefore corresponds to a universal joint, in which the eotor 1 is the normally rigid joint

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> i ι> ι >

element corresponds to.

The rotor shape can be seen in particular from FIGS. The spherical casing rings 5, 6 are in the manner described above each from the end faces of the rotor. The disc-shaped rotor 1 has a spherical ring-shaped peripheral edge 16, the center of curvature lies in the rotor axis, while the two End faces of the rotor each rise in the axial direction, run radially and at the same circumferential angle like the pivot pins 12, 13 »14 and 15 arranged Elevations 17 »18, 19 and 20 have. The diametrically opposed to one another on one rotor face the two elevations 17 and 19 are offset in the circumferential direction by 90 ° to those on the other end of the rotor Elevations 18 and 20 formed in the same way are arranged.

When the rotor is housed in the housing, as shown in FIG. 1, the raised areas 17, 18, 19 and 20 each on the inner end faces of the Housing end parts 2, 3 and remain in contact with these surfaces even during the rotation of the rotor. Between .the individual elevations are the rotor front sides

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shaped such that at least during "certain rotational positions dee rotor between these rotor parts and the housing end parts 2, J spaces are formed, whose Volume changes as the eotor rotates. Here one of these spaces has its smallest volume when the axis of a pair of pivot pins is perpendicular to the axis of both shafts. When rotating the two Shafts form the pivot pin axes with the levels of their original positions in each case progressively larger angles, which means a displacement of the rotor for so long has the consequence, until the respective following pivot pin axis with respect to the shaft axes a position perpendicular to the axis occupies.

In the rotor position shown in Fig. 1 of the drawings the elevations provided on the right-hand side of the rotor are aligned vertically. When the rotor is out of this Position is turned out by 90 °, then the elevations provided on the left rotor face take a vertical one Position a, as shown in Fig. 1 in the lower half of the dash-dotted line. According to the representation in 1 the rotor has moved over to the opposite end of the housing. This scheme serves but only to show the change in volume of the to

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"both sides of the rotor as a result of the rotor shape and each relative displacement of the rotor in relation to the housing formed spaces. A maximum volume of the rooms on one or the other side results in each case when the rotor assumes one of the positions described here.

An advantage of such a rotary piston machine according to the invention arises when one is in the housing provides corresponding inlet and outlet openings, the exact arrangement of which depends on whether the machine is as Drive machine or as a pump is to be used. Procedures and Embodiments Achievable in Such Circumstances result from the earlier proposal mentioned at the beginning. The most important considerations are in the case of certain two-stroke engines, in accordance with the older proposal, essentially the same as in of the rotary piston machine according to the present invention, regardless of the differences, as in the individual Cases the desired rotor movement is achieved.

Figures 4 and 5 of the drawings show schematically some of the factors relevant to the embodiment of the invention described above.

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The inner one, for example from 3? Ig. The housing shape shown in FIG. 4 is achieved by intersecting parts of two concentric balls of different diameters, which are arranged symmetrically to a vertical transverse plane which crosses their common center point. The parts of the two balls on either side of the transverse plane each have flat side surfaces, the side surfaces of the smaller diameter ball running parallel to this transverse plane, while the flat side surfaces of the larger diameter ball each at an angle oC 'included with the transverse plane are inclined and wherein this angle oC according to the invention in each case also corresponds to the apex angles formed on both sides of the housing longitudinal axis by the axes of the shafts carrying the rotor.

Reference is now made to FIG. 5 of the drawings taken, which is a universal joint with a rigid, between fork elements 22 and 25 arranged element shows. The two fork elements 22, 23 are at right angles to one another on opposite sides Ends of two shafts 24, 25 attached, which with respect to the drawing to the horizontal at an angle ot run obliquely.

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If you look at the movement of the rigid universal joint element, you can see that its axes are always perpendicular to one another and each of these "two axes can only move in a plane perpendicular to the axis of the respective associated shaft". If one assumes that a cylinder with the radius r sits on each axis of the rigid universal joint element, then one can imagine that one on. the surface of the one cylinder at a distance r from the center of the rigid universal joint element and normal to the axis of the shaft 2 ^ running line would touch a fixed plane 26. In the same way, a line running around the circumference of the other cylinder would touch a stationary plane 27 running perpendicular to the axis of the shaft 25.

If you choose according to Fig. 4 of the drawings for the mutually inclined sides of the larger diameter spherical section a corresponding distance and consequently a corresponding distance between the inner end faces of the two in lig. 1 shown housing end parts 2, 3 » you also replace the rigid universal joint element by a rotor of the type described above and you give the The vertices of the elevations provided on the rotor are the! Shape

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ORiGlNAt

of cylinder jacket cutouts with radius r, see above are between the housing and during the rotor rotation the eotor as a result of the "arched shape around the vertex The hot or heightened line contacts wandering around maintain sealing surfaces.

This allows sufficient spaces between the individual spaces formed between the rotor and the housing Sealing surfaces are maintained without the need for special seals, although Selbstver Of course, simple elastic seals can also be used if this should be more advantageous at higher working pressures.

Pig. 6 of the drawings shows a modified embodiment of a housing by means of which according to the J. Invention of the included angle between the two waves in the sense of a change in volume during the Rotation of the rotor formed spaces can be changed. The housing has a housing end portion 30 similar to that Housing end part 2 shown in Fig. 1, the circumference of which in the same way, in turn, is attached to a housing ring 31, which also has the shape of an inclined

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has tapered spherical jacket ring. At the in EIg. 6th However, the embodiment shown has the housing ring 31 also facing away from the housing end part 3O, axially extending pipe socket-like approach 32, whose the central axis in "is horizontal with respect to the drawing, while this same axis is inclined with respect to the housing end part 30. The cylinder part 34 of a second housing end part 33 is by means of a ball bearing 35 mounted concentrically in the extension 32. A flat end face 36 of the housing end part 33 lies within of the housing ring 31 of the corresponding end face of the housing part 30 opposite. The one to the face 36 perpendicular axis is inclined with respect to the axis of the cylinder part 34 · at an angle which is equal to the angle enclosed by this latter axis and the axis of the housing end part 30, while a journal bearing bore 37 provided in the housing end part 33 is coaxial with the vertical axis of the End face 36 runs. Rotating the housing end part 33 about the axis of the cylinder part 34 has a Change in the inclination of the inner end face 36 in relation to on the inner end face of the housing end part 30 and consequently also a change in the relative inclination of the

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Shaft journals received in these two housing end parts result. Rotating the housing end part 53 by 180 ° from the in Eig. 6 in full lines shown position out to the position shown in this 3 figure in dash-dotted lines an alignment of the two shaft journals on common axes, so that in connection with a rotor and with shafts of the type described above while rotating the ™

Rotor does not change the volume of the spaces formed between the rotor and the housing. Intermediate positions result in correspondingly proportional changes in the rotor displacement and consequently also in the performance of the Rotary piston machine. One such change is with the stroke change of a reciprocating piston engine Pistons comparable.

Dtu? Eil the use of two rotary piston machines Jj

the in tfig. Λ type shown, which are coupled to each other via a common shaft that .Ihre two outer shafts run obliquely with respect to the common shaft in the same sense, for example by both outer shafts with respect to the drawing in such a way obliquely upwards or obliquely after run below that corresponding 'healing of the ring canals encompassing the rots

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in "with respect to the common wave in each case in the same sense are aligned radially, axial loads and inertia forces can be balanced in a suitable manner. the Front-end rotor loads act against one another in such an arrangement and those as a result of rotor vibrations evoked moments cancel each other out. The use of large thrust bearings and, if necessary, one second balancer shaft is therefore not required «

Such, for example operated as an air compressor machine according to the invention is in the Pig. 7th and FIG. 8 of the drawings. Two disc-shaped rotors 40, 41 (Pig. 8), which are basically the same as in FIGS Pig. 2 and 3 of the drawings correspond to the Hotor shown, although they have some differences in their Porm described below, housings 42, housed, each of which has a channel alternately narrowing and widening in the circumferential direction, within which the radially outer rope of the respective rotor revolves during the rotor rotation. One in one that connects the two housings 42, 43 to one another Housing part 45 housed shaft 44 is on both of them Ends each fork-shaped. The two fork-shaped wave

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ends lie in a common plane and each take two diametrically opposed pivot pins of the concerned rotor. The pivot pins are in the manner already described above within the central openings of the rotors each arranged around the opening circumference. Inside each rotor is another one

offset by 90 ° to the pivot pin mentioned above

arranged pivot pin pair 48, 49 provided (Pig. 11), ™ and both pivot pin pairs are on the one hand by a fork-shaped end of a shaft 50 and on the other hand by a forked end of a shaft 51 received which both protrude away from the side of the rotor in question facing away from the shaft 44. The waves are 50 * 51 so housed in housing parts 52, 5J5 that their Axes with respect to the drawing relative to the axis of the shaft 44 each at the same angle obliquely upwards

get lost. J passing through the housings 42, 43

Air inlets 54, 55 each open near those points in the above-mentioned ring channels, where they are furthest. The inlets 54, 55 open into the annular channel walls each as Niederdruaköffnungen, which have such a shape that individual sections during the rotor rotation are not covered in certain rotational positions and

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as a result, air can flow into the spaces formed between the rotors and the respective associated housings. Outlets 56, 57 also lead through the housing, which lead outward from the high pressure openings located at the point on the circumference of the annular ducts where the two mutually inclined end faces of the annular duct in question have the smallest distance from one another. The high pressure openings are not covered with respect to the pressure openings during other rotational positions of the rotor, so that air which was compressed during the rotor rotation due to volume changes in the aforementioned spaces can flow out again through the outlets.

In order to have a sufficient cross-section of the high-pressure ^ To obtain openings, it is desirable that the disk-shaped Rotors have as wide a rim as possible. So that this is achieved without overly heavy and large construction the rotors and their respective associated housing instead of the flat ones described above End faces preferably conical end faces.

As can be seen from FIGS. 9 and 10 of the drawings, the inner end faces 60 ', 61 of the individual structures

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housing 42, 42 each have the shape of a flat truncated cone with a HaTbwinkel $, the axes of these truncated cone lateral surfaces intersecting the center lines of the housing each at an angle JÖ. The scope of the respectively provided in the "two housings annular channel is formed r by a spherical shell ring with the radius, which connects the outer edges of said inner housing faces% with each other. The shaded area P indicates the cross section of the high-pressure port formed in the relevant housing. The The shape and arrangement of the high-pressure opening is indicated by the hatched area I. The two housings 42, 43, like the embodiment of the invention described at the beginning, also have spherical-jacket-ring-shaped surfaces that are located radially further inward, but are not shown in FIGS .

In a plan view, the rotors 40, 41 show similar to the rotor shown in FIG. 3, as shown in particular Fig. 11 shows a rotor disk 65 with a central opening which, to both end faces of the rotor disk 65, has spherical casing rings 66 protruding laterally from it, is encompassed, the latter in particular from FIGS. 12 and 13 can be seen. Those already mentioned, from the

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recorded forked ends of the respective shafts Hinge pins 46, 47, 48, 49 are each -by 90 ° to each other offset around the opening circumference of the central pane opening arranged around and also extend radially over each rotor face two in the axial direction uplifting, diametrically opposite elevations 68, 69, with those located on one rotor end face Elevations to the elevations provided on the other rotor end face are each arranged offset by 90 ° are.

The rotor circumferential edge is each adjoining the individual front elevations with cutouts 70 provided, which each partially pass through the rotor peripheral edge and serve to the between the rotor in question and the associated housing spaces formed during suitable rotor rotation positions each with the high pressure opening formed in this housing connect to. The rotor circumferential edge itself has a spherical jacket ring-shaped surface, the center of which lies in the rotor center line.

In order to adapt the rotor exactly to the housing, the end faces of the rotor are each made up of parts of

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: ,, = ■ - »■; «Ü ;, $. w> ■■ ': ■■■ ■■ «,:. ιρ _τ -, ι ■■■; ■■, ■■:. ■

composed of four conical surfaces.

Two diametrically opposite partial conical surfaces each have the same half-angle J0T (Pig. 12) as the corresponding end faces of the respective associated housing and their cone axes are similarly inclined with respect to the rotor axis. The remaining parts of the relevant rotor surface are partial conical surfaces which run tangentially to the first-mentioned partial conical surface pair and coaxially with a pair of pivot pins, for example 46, 47. The half-angle § of these last-mentioned partial conical surfaces is in each case equal to ^ - ß. The other side of the rotor is designed in the same way, but offset by 90 ° in the direction of rotation, so that the cones corresponding to the half-angle § are coaxial with the respective other pair of pivot pins, for example 48, 49.

If desired, other surfaces which can be derived from any rotational body can also be used. pre-condition is only that these bodies of revolution or the surfaces derived from them are an exact match between the relevant rotor and the associated housing.

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During the operation of the above-described machine according to the invention as a whole, so each The end face of a rotor and the housing surfaces interacting with it are each considered as a unit the two machine parts are effective independently of each other. During the rotation of the rotor the rotor edge runs over the low-pressure opening assigned to it, so that the respectively associated inlet then in each case communicates with one of the spaces formed between the rotor and the associated housing when the volume of the The space concerned is enlarged during the rotor rotation and consequently air is sucked in. With advancing Rotation of the rotor, this low-pressure opening is then closed again, after which the volume of this is filled with air The space begins to shrink and the air trapped in this space is compressed as a result. After a One of the cutouts formed in the rotor edge runs over the high pressure opening for a correspondingly short period of time and lets the compressed air flow out. The length and width of the high pressure orifices and that in the rotor circumference The sections formed are largely dependent on the planned pressure ratio and the intended air outflow speed addicted. The 3-shape of the cutouts formed in the rotor circumferential edge determines the compression volumes of the individual rooms and consequently also

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35 "

the opening times of the median pressure openings. The profiles the opening edges of the low-pressure openings are accordingly then in each case on the profiles of the leading edges of the Rotor edge formed cutouts directed when the Compression volumes in each case to a pressure corresponding to the inlet pressure Have expanded volume. The profiles of the closing edges of the low pressure openings are at Rotor- ™

Positions that each have maximum volumes of each Spaces correspond, determined by the relevant rotor edges.

If the rotary piston machine according to the invention is operated at high speed, the leakage losses occurring as a result of the respective corresponding surfaces of the rotors and the respective associated housing can also occur without the similar

Use of tight seals can be kept within acceptable limits. However, en the · flexibility of the shafts and bearings and caused by heat or other influences JB ¹ O rmver Modified make it substantially impossible corresponding to all speed ranges scope maintain, which in particular in each particular within the lower portions of speed ranges is the case. To avoid these disadvantages

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systems can be considered according to which Seals are used that "at low speeds, when the wear is low, leakage losses in general However, they are unsustainable, slide along the respective surfaces and are withdrawn depending on the operating conditions will.

Such seals can, for example, between corresponding Partial spherical jacket surfaces of the Hotoren and the respective associated housing and provided on the Botoruiüiängen be.

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Claims (15)

Patent claims 1. Rotary piston machine with a rotor mounted in a housing, characterized in that the essentially disc-shaped rotor (1; 40 or 41) is articulated about mutually right-angled diametrical axes (12 to 15 * 46 to 49) with two mutually inclined shafts (9 , 10; 50, 44 M or 44, 55) that the rotor is forced to move by the two shafts, that one diametrical axis is in a plane perpendicular to the one shaft and the other diametrical axis is in one the other shaft rotates perpendicular plane that also in j Housing (2, 3, 4; 30 to 33; 42 or 43) an annular channel, which alternately narrows and widens in the circumferential direction, encompasses part (16; 65) of the rotor, and that finally the rotor together with the M housing a plurality of spaces which change in size as the rotor rotates. 2. Rotary piston machine with a rotor mounted in a housing, characterized in that the substantially disc-shaped rotor (1; 40 or 4l) with two mutually inclined shafts (9, 10; 50, 44 or 44, 51) each separately - 27 909819/0857 articulated (12 to 15; 46 to 49) is that further the joint axis assigned to one shaft is arranged at right angles to the joint axis assigned to the other shaft is that further in the housing (2, 3, 4; 30 to 33; 42 or 43) an alternating in the circumferential direction narrowing and widening, a part of the rotor encompassing annular channel is formed and that the rotor together with the Housing forms a multitude of spaces which change in size when the rotor rotates. 3. Rotary piston machine according to claim 1 or 2, characterized in that the rotor (Ij 40 or 41) via pivot pin (12 to 15; 46 to 49) is connected to the two shafts (9, 10; 50, 44 or 44, 53). 4. Rotary piston machine according to one of Claims 1 to 3 *, characterized in that annular parts (5, 6; 66, 67) project from both sides of the rotor disk (at 1; 65), which in cooperation with the housing (2, 3 , 4; 30 to 33; 42 or 43) close off the annular channel formed in this housing and receiving the radially outer rotor part. 5. Rotary piston machine according to claim 4, characterized - 28 - 909819/0857 3? shows that these annular parts (5. 6j 66, 67) have the shape of spherical casing rings and interact with correspondingly shaped housing surfaces surrounding them. 6. Rotary piston machine according to claim 4 or 5> characterized in that the radially outer rotor part (at Ij 65) on its two end faces each rising in the axial direction, radially extending during the rotation J of the rotor (Ij 40 or 41) on the inner one Housing surfaces (at 2, 5, 4; 50 to 33; 42 or 4?) Has adjacent elevations (17 to 20j 68, 69). 7. Rotary piston machine according to claim 6, characterized in that on each end face of the rotor disk (at Ij 65) in each case two diametrically opposite, radially extending elevations (17, 18 or 18, 20, 68, 69) are provided and that the elevations provided on one side of the rotor compared to those provided on the opposite side of the rotor " the elevations seen are each offset by 90 °. 8. Rotary piston machine according to one of claims 1 to ¹ J _1, characterized by at least one fluid inlet opening (at 54 or at 55) or outlet opening (at 56) that is fixed with respect to said annular channel - 29 - 909819/0857 or at 57) * both in the course of the rotation of the Rotor (1; 40 or 41) are opened and closed from time to time. 9. Rotary piston machine according to claim 8, characterized in that one of said openings is used as a high pressure opening (at 56 or at 57) is arranged on the circumference of said annular channel at or near the point at which the end faces of this ring channel that interact with the rotor disk end faces have the smallest distance from one another to have. 10. Rotary piston machine according to one of claims 1 to 9, characterized in that said annular channel has flat end faces (Pig. I to 6). 11. Rotary piston machine according to one of claims 1 to 9 *, characterized in that said annular channel is conical has running end faces (Pig. 7 to 13). 12. Rotary piston machine according to one of claims 1 to 11, characterized in that the housing consists essentially of two housing parts (30, 31 * that can be rotated with respect to one another) and 33), so that the one of the two waves (e.g. 9, - 30 909819/0857 or 50, 44 or 44, 51) included angles by a such rotation is changeable. 15. Rotary piston machine according to one of claims 1 to 11, characterized by a further, partially expanding and narrowing alternately in the circumferential direction Ring channel of a housing (42 or 4 ^) recorded, disc- » shaped rotor (40 or 4l), which on the one hand can be pivoted about a diameter of one of the shafts (50 or 51) mentioned is attached to the shaft in question and the other is at right angles to said diameter by a extending diameter of a third shaft (44) is pivotally attached to this third shaft, wexch the latter to the relevant aforementioned shaft runs angled in one plane (Fig. 7, 8). 14. Rotary piston machine according to claim 13, characterized in that J indicates that the joint axles connecting the two rotors (40, 41) to said third shaft (44) lie in the same plane (Fig. 8). 15. Rotary piston machine according to claim 13 or 14, characterized characterized in that the same to one said third - 31 - 909819/0857 Shaft (44) is constructed symmetrically in the center of the plane perpendicular to the axis (Fig. 7, 8). 90981 9/0857 ORIGINAL INSPSCTED