Rotary piston engine which acts as a pump, condenser or motor for a fluid

A rotary piston engine which operates as a pump, condenser or motor for a liquid or gaseous medium, the rotary piston comprising a first gear (4) having a first central axis (I), a second gear (6) arranged opposite the first gear (4) and having a second central axis (II), and a drive shaft (8) having a third central axis (III) and a sliding plane (10, 12) fixedly connected to the drive shaft (8), wherein the first central axis (I) and the second central axis (II) enclose an angle (α3) which is not equal to 180°, wherein the third central axis (III) and at least one central axis (I, II) from the group comprising the first central axis (I) and second central axis (II) enclose an angle (α1, α2) which is not equal to 0° or 90°, wherein the sliding plane (10, 12) and the at least one central axis (I, II) are perpendicular to each other, wherein the first gear (4) has a first end face (14) having a first toothing (16) that has at least one first tooth (18) and the second gear (6) has a second end face (20) having a second toothing (22) that has at least one second tooth (24), wherein a first number of first teeth (18) and a second number of second teeth (24) differ from each other, wherein the first tooth (18) and the second tooth (24) engage with each other in such a way that a working chamber (26) is formed by means of a meshing of the first teeth and the second teeth (18, 24), wherein a volume formed by means of the at least one working chamber (26) is changed by the meshing of the first teeth and the second teeth (18, 24), wherein the at least one working chamber (26) is delimited by a spherically shaped inner wall (30) of a housing (28), wherein the at least one working chamber (26) is configured to be connected to a supply flow (40) and an outlet flow (42) for the medium, characterized in that a component (4, 6) from the group comprising the first gear (4) and the second gear (6) is coupled to the housing (28) such that rotation of the drive shaft (8) causes only the component (4, 6) to tumble, also characterized in that an other component (4, 6) from the group comprising the first gear (4) and second gear (6) is coupled to the sliding plane (10, 12) such that the other component (4, 6) rotates and tumbles by means of rotation of the drive shaft (8).