Patent EA-004367-B1 (EA)
Title: Volumetric rotary machine
Inventor: DIDIN ALEXANDER VLADIMIROVICH
IPC: F01C3/00
Filed: 2001-10-10
Abstract: 1. A fluid-flow displacement rotary machine comprising a stator (1) having a concentric effective area (2) and a drive rotor (8) between which at least one chamber-defining space (12) is formed, at least one driven rotor (18) rotatable about its own axis (19) which intersects the drive rotor (8) axis (20), said driven rotor being partially deepened in a groove (21) passing through the stator (1) effective area and having at least one recess (22) made along the perimeter thereof; inlet (23) and outlet (24) ports for the working fluid to pass, said ports being disposed in fluid communication with the working chambers (17), characterized in that, the chamber-defining space (12) is defined by a surface (14) similar to the surface of a revolution body formed by rotation of the stator (1) together with the driven rotor (18) about the axis (20) of the drive rotor (8), with simultaneous rotation of the driven rotor (18) around its own axis (19), wherein the following relationship is obeyed: where p is a number of recesses (22) along the driven rotor (18) perimeter, D is a number of the driven rotor (18) revolutions around its own axis (19), R is a number of the drive rotor (8) revolutions around its own axis (20), N is a positive integer, and the recess (22) arranged along the driven rotor (18) perimeter has such a depth at which the bottom of said recess (25) is under the stator (18) effective area (1) in any position assumed by said rotor, and each side face (26) of said recess (22) has at least one drive rotor (8) contacting portion (27) extending along depth of the recess (22). 2. A fluid-flow displacement rotary machine as claimed in claim 1, characterized in that the stator (1) is provided with a circular ridge (3) wherein the driven rotor (20) axle (19) is disposed. 3. A fluid-flow displacement rotary machine as claimed in claim 2, characterized in that the stator (1) is made in the form of a ring (28) having circular ridge (3) on its inner surface, said, ridge mounting the driven rotor (18) axle (19). 4. A fluid-flow displacement rotary machine as claimed in claim 3, characterized in that the driven rotor (18) axle (19) extends beyond the limits of said circular ridge (3). 5. A fluid-flow displacement rotary machine as claimed in claims 1 to 4, characterized in that the drive rotor is fixed stationary and the stator (1) is mounted rotatably around its own axle (30). 6. A fluid-flow displacement rotary machine as claimed in claims 1 to 5, characterized in that a drive rotor (8) contacting portion (27) on at least one side face (26) of the recess (22) is made in the form of a rib interconnecting the end face (31) of the driven rotor (18) and the side face (26) of the recess (22). 7. A fluid-flow displacement rotary machine as claimed in claim 6, characterized in that a second drive rotor (8) contacting portion (27) is made in the form of a rib disposed on the opposite side face (26) of said recess (22), the ribs being situated on one of the driven rotor (18) end faces (31). 8. A fluid-flow displacement rotary machine as claimed in claim 6, characterized in that said second drive rotor (8) contacting portion (27) is made in the form of a rib disposed on the opposite side face (26) of said recess (22), the ribs being situated on the opposite driven rotor (18) end faces (31). 9. A fluid-flow displacement rotary machine as claimed in any one of the preceding claims, characterized in that the working fluid inlet ports (23) are disposed on the stator (1) and/or the drive rotor (8). 10. A fluid-flow displacement rotary machine as claimed in any one of the preceding claims, characterized in that the working fluid outlet ports (24) are disposed on the stator (1) and/or the drive rotor (8). 11. A fluid-flow displacement rotary machine as claimed in any one of the preceding claims, characterized in that at least two driven rotors (18) are synchronized therebetween and at least one of them is engaged with drive rotor (8). 12. A fluid-flow displacement rotary machine as claimed in any one of the preceding claims, characterized in that angular dimensions of the chamber-defining space cross-section is selected so that it can be divided into working chambers (17) by the driven rotor (18) section without recesses (22).