Pump with variable suction/discharge amount and drive device composed of the pump and driving method thereof

A driving method employing the pumps with variable suction/discharge amount, characterized in the following steps:

• in a closed loop, assembling at least one pumps with variable suction/discharge amount to form at least one drive devices with variable suction/discharge amount;
• the pumps with variable suction/discharge amount respectively including a vane chamber body and a vane rotor, the vane chamber body internally having a vane chamber, which has a capacity space defined between a fixed wall member, a movable wall member and a movable vane chamber sleeve in the vane chamber body the vane chamber being partitioned by an impeller of the vane rotor in the vane chamber into a plurality of eccentric vane chamber sections, a plurality of vanes being disposed on the impeller, and the number of the eccentric vane chamber sections being more than or equal to the number of the vanes;
• in the vane chamber, at any timing when the vane rotor continuously operates in the same direction relative to the vane chamber body, one of two lateral sides of each vanes adjacent to another vane unchangeably being a suction side while another one of the two lateral sides of each vane adjacent to another vane unchangeably being a discharge side, and the suction side and the discharge side respectively having communicable suction/discharge passages in communication with outer side of the pump;
• the fixed wall member being positioned in a fixed position in the vane chamber body;
• and the movable wall member and the movable vane chamber sleeve are displaceable in an axial direction of the vane rotor relative to the fixed wall member to increase or decrease and change the capacity space of the vane chamber, so as to form a pump capacity space with variable suction/discharge amount, inputting a fluid into the vane chamber of each drive device with variable suction/discharge amount, the input fluid pushing against one side of one of the plurality of vanes in the vane chamber to drive the vane rotor to rotate, at the same time, the fluid in the vane chamber at the other side of the vane being pushed by the vane out of the vane chamber to form a driving loop;
• synchronously displacing the movable wall member and the movable vane chamber sleeve of the pump in each drive device with variable suction/discharge amount in the axial direction of the vane rotor relative to the fixed wall member so as to change the capacity space of each vane chamber of the drive device with variable suction/discharge amount, such that amounts of the fluid being pushed out of and sucked into the vane chamber change each time the vane rotor in the vane chamber rotates by one circle;
• inputting and outputting the same amount of fluid per unit time into and from each drive device with variable suction/discharge amount, such that the rotational speed of the vane rotor decreases when the capacity space of the vane chamber is increased, and that the rotational speed of the vane rotor increases when the capacity space of the vane chamber is decreased;
• that is, the vane rotor of each having a rotational speed in inverse proportion to the change in the capacity space of the vane chamber.

A driving method for variable speed drive device, the variable speed drive device including at least one pumps with variable suction/discharge amount

• assembled to form an active drive device with variable suction/discharge amount, and at least one pumps with variable suction/discharge amount assembled to form a passive drive device with variable suction/discharge amount, and the active and the passive drive device with variable suction/discharge amount are then connected to together form an active and passive closed loop variable speed drive device;
• the pumps with variable suction/discharge amount respectively including a vane chamber body and a vane rotor, the vane chamber body internally having a vane chamber, which has a capacity space defined between a fixed wall member, a movable wall member and a movable vane chamber sleeve in the vane chamber body;
• the vane chamber being partitioned by an impeller of the vane rotor in the vane chamber into a plurality of eccentric vane chamber sections, a plurality of vanes being disposed on the impeller, and the number of the eccentric vane chamber sections being more than or equal to the number of the vanes;
• in the vane chamber, at any timing when the vane rotor continuously operates in the direction relative to the vane chamber body, one of two lateral sides of each vanes adjacent to another vane unchangeably being a suction side, while another one of the two lateral sides of each vane adjacent to another vane unchangeably being a discharge side, and the suction side and the discharge side respectively communicable suction discharge passages in communication with outer side of the pump;
• the fixed wall member being positioned in a fixed position in the vane chamber body;
• and the movable wall member and the movable vane chamber sleeve being displaceable in an axial direction of the vane rotor relative to the fixed wall member to increase or decrease and change the capacity space of the vane chamber, so as to form a pump capacity space with variable suction/discharge amount;
• the driving method being characterized in including the following steps:
• (1) causing the variable speed drive device to operate and allowing a difference value between a driving force of the active drive device with variable suction/discharge amount and a load resistance born by the passive drive device with variable suction/discharge amount;
• (2) as an effect of the difference value between the driving force and the load resistance, the movable wall members and the movable vane chamber sleeves of the active and the passive drive device with variable suction/discharge amount being subjected to a compressive push and a vacuum suction produced in the vane chamber, and accordingly being displace synchronously, causing the capacity space of the vane chamber of the active and the passive drive device with variable suction/discharge amount to change and adjust their volume automatically under the effect of the difference value between the driving force and the load resistance;
• and
• (3) in the closed loop, when a balance of force is reached, the capacity spaces of the vane chambers of the active drive device and the passive drive device with variable suction/discharge amount being eventually automatically adjusted to a state in which the driving force of the active drive device with variable suction/discharge amount is equal to the load resistance of the passive drive device with variable suction/discharge amount, meanwhile, the volumes of the capacity spaces of the vane chambers and the rotational speed of the active and the passive drive device with variable suction/discharge amount also being automatically adjusted to be inversely proportional to each other during pump operation.