Rotary Piston Pumps TRIZ Cases

An oil release hole in the pump housing mitigates abrupt discharge pressure changes caused by leakage, ensuring stable lubrication performance.

A magnetically driven micropump uses a channel structure to force pumped medium through radial bearings for active lubrication.

Inclined lubricating surfaces on gerotor pump rotors build hydrodynamic films, reducing drive torque at low speeds.

An eccentric screw pump uses a spring-loaded exterior body to maintain stator contact pressure, reducing torque and wear during thermal expansion.

Variable displacement via adjustable eccentricity resolves torque-speed trade-offs while minimizing leakage losses in compact hydraulic systems.

A movable liquefied liquid supply port adjusts position along the rotor shaft to stabilize discharge gas temperature and reduce compressor workload.

Segmented screw rotors with variable pitch improve compression ratio and heat dissipation, reducing power consumption and noise.

Elevated water reservoir supplies rotors and mechanical seals via solenoid valves at startup, preventing dry friction and liquid compression failures.

Segmented channels enable independent temperature control for bearing lubrication and rotor cooling, reducing hydrodynamic losses.

Aligning multi-pressure discharge outlets in one direction simplifies guide member connections, reducing housing complexity and size.

Asymmetric cooling ribs on a Roots pump housing increase heat dissipation while 90-degree fastening elements reduce mounting stress.

Cylindrical pins establish a positive connection between the drive gear ring and rotor ring body, preventing slippage during high-torque cold starts.

Resonator arrays integrated into the discharge plenum cancel gas pulsations via non-linear frequency coupling, reducing structural vibration and noise.

Segmented dual motor design overcomes 12V power limits by merging units into one compact assembly.

A vane pump casing features an intermediate flange fixed to a stationary member to manage thermal expansion.

A vane pump core profile with a non-linear radius modifying portion adjusts radial extension to maintain steady flow.