Fluid machine

A fluid machine comprising:

• a fixed cylinder formed in a main body housing;
• a main shaft having a rotation center that coincides with an operation center of the cylinder;
• an eccentric shaft fixed to the main shaft, and configured to maintain and rotate at an eccentric interval (d) from the main shaft;
• a rotation-revolution shaft configured to rotate and revolve on the eccentric shaft;
• a rotary piston coupled integrally with the rotation-revolution shaft to rotate, and having a center that is eccentric to the rotation-revolution shaft by a distance (r) that is equal to the eccentric interval (d) (d=r);
• and
• a rotation ratio restraining device configured to restrain a rotation ratio of a main shaft rotational angular velocity (x) and a rotary piston rotational angular velocity (y) to 1:2.

A fluid machine comprising:

• a rotary cylinder;
• a rotary piston eccentric so as to have a rotation center that maintains an eccentric interval (d) from a rotation center of the rotary cylinder, and having a center that is eccentric to the rotary piston by a distance (r) that is equal to the eccentric interval (d) (d=r);
• and
• a rotation ratio restraining device configured to restrain a ratio of a rotary cylinder-rotational angular velocity (x) and a rotary piston-rotational angular velocity (y) to 1:2.

A fluid machine comprising:

• a rotary cylinder;
• a rotary piston eccentric so as to have a rotation center that maintains an eccentric interval (d) from a rotation center of the rotary cylinder, and having a center that is eccentric to the rotary piston by a distance (r) that is equal to the eccentric interval (d) (d=r);
• a rotation ratio restraining device in which
• two pairs, each of which includes the rotary cylinder and the rotary piston, are coupled into two stages,
• one pair stage is configured such that a fluid output is proportional to cos (e) based on a rotary cylinder angle of x=θ=0 and a piston angle of y=θ=0,
• another pair stage is configured such that, in order to displace a working fluid phase by ±90 degrees, arrangement and coupling are performed to satisfy a cylinder angle of x=θ=±90 and a piston angle of y=2x=180, so that a fluid output is proportional to COS (θ−90) (or COS (θ+90) also having a same result), and
• the rotation ratio restraining device is configured to restrain a ratio of a rotary cylinder-rotational angular velocity (x) and a rotary piston-rotational angular velocity (y) to 1:2;
• and
• a fluid machine (P) formed by coupling the two pairs, which are the two stages, into one so that suction-discharge is performed as a direct current,
• wherein one fluid machine (P) is coupled to an active machine,
• another fluid machine (P) is coupled to a passive machine, and
• the two fluid machines (P) connected to the active machine and the passive machine are connected by a working fluid-closed circuit,
• so that rotation amount and torque amount displacements are generated between the active machine and the passive machine.

A fluid machine comprising:

• a rotary cylinder;
• a rotary piston eccentric so as to have a rotation center that maintains an eccentric interval (d) from a rotation center of the rotary cylinder, and having a center that is eccentric to the rotary piston by a distance (r) that is equal to the eccentric interval (d) (d=r);
• a rotation ratio restraining device in which
• two pairs, each of which includes the rotary cylinder and the rotary piston, are coupled into two stages,
• one pair stage is configured such that a fluid output is proportional to COS(θ) based on a cylinder angle of x=θ=0 and a piston angle of y=θ=0,
• another pair stage is configured such that, in order to displace a working fluid phase by ±90 degrees, arrangement and coupling are performed to satisfy a cylinder angle of x=θ=±90 and a piston angle of y=2x=180, so that a fluid output is proportional to COS(θ−90) (or COS (θ+90) also having a same result), and
• the rotation ratio restraining device is configured to restrain a ratio of a rotary cylinder-rotational angular velocity (x) and a rotary piston-rotational angular velocity (y) to 1:2;
• a fluid machine (P) formed by coupling the two pairs, which are the two stages, into one so that suction-discharge is performed as a direct current;
• and
• a multi-stage fluid machine (Pn) formed by coupling fluid machines (P) in multiple stages (P*n) so that one output rotation shaft is formed in one housing,
• wherein the fluid machine (P) is coupled to an active machine,
• the fluid machine (P) and the multi-stage-fluid machine (Pn) are connected by a working fluid-closed circuit, and
• a plurality of valves (SVn) configured to control a working fluid flow of each stage (P), which is the multi-stage-fluid machine (Pn), are added to the working fluid-closed circuit,
• so that a rotation amount (R2) applied to an output rotation shaft of the multi-stage fluid machine (Pn) with respect to a rotation amount (R1) of the fluid machine (P) coupled to an output shaft of the active machine and a torque amount are able to be displaced and controlled.