Rotary Piston Pumps TRIZ Cases

Heat engine system generates electricity and heat using an ammonia-water thermodynamic cycle with a scroll expander to maintain power during grid blackouts.

Groove-shaped notches provide guide surfaces that prevent side member damage by guiding separated vanes back onto the cam face.

Slotted apertures in the pump housing accept securing straps to mount the unit on bucket rims, resolving spinning issues during drill operation.

Segmented helical ridges in the hollow cylinder guide rotor ends while reducing manufacturing complexity and material costs.

Fluid channels and stoppers reverse rotation direction without opening the apparatus, reducing error risk during operation.

Integrating a pressure sensor into the scroll pump housing enables independent suction pressure measurement and operational self-control.

Automatic bypass openings adjust the volume ratio based on pressure differentials, resolving inefficiencies from fixed geometry under varying load conditions.

A pump-motor unit uses a single rotating shaft to couple the electric motor rotor directly to the pump rotor, eliminating intermediate couplings.

Universal gearbox modules accommodate interchangeable rotor assemblies, enabling rapid seal replacement without removing the pump casing.

A stator fabrication method uses a bonding agent to secure reinforcing material inside a tube, creating a durable helical cavity structure.

Eccentric wrap centers concentrate rotational moments on single pins, causing damage. This design distributes loads across multiple parts to enhance durability.

A gear pump design sets specific shaft-to-bearing clearance ratios to promote fluid lubrication and suppress frictional heat generation.

A geared fluid machine uses a tilting compensation ring to adjust the ring gear position for consistent sealing across rotation directions.

Segmented resonator arrays with nested cells and orifices absorb refrigerant pulsations without increasing axial length.

Dual control chambers with a thermally adjustable valve vent pressure at low temperatures, reducing unnecessary displacement and friction losses.

Inlet port cutbacks reduce cavitation erosion during high-speed operation.

Diagonal zig-zag inlet channels increase air flow capacity while preventing vane jamming and stator deformation.

Tapered fluid communication portions in gear pump casings gradually widen tooth spaces, reducing rapid pressure variation and gear vibration noise.

Shifting the center of gravity creates centrifugal force that preloads bearings, preventing slippage and extending bearing life in co-rotating compressors.

Epicycloid and hypocycloid tooth profiles synchronize displacement velocities to maintain constant intertooth clearance, reducing noise from vibration.

Refrigerant cooling maintains rotor clearances in dry spindle compressors, resolving efficiency losses from thermal expansion without operating fluid.

Boss portion central rigidity reduces bearing stress and prevents wear under severe lubrication conditions.

A communication groove transfers working fluid between pump chambers, reducing excessive pressure peaks and suppressing pulsation in vane-type pumps.

A hydraulic vane machine uses a cam disk to guide vanes radially for flexible stator design.

Rotating fan blades and internal guide ribs channel intake air to cool the eccentric bearing, preventing overheating without adding independent motors.

A one-piece pump housing positions a synchromesh gear between bearings, reducing overall length while eliminating two-piece assembly costs.

Radial connection routing in a plastic motor housing reduces axial dimensions and eliminates expensive sheet-metal casing seals.

Semi-molten die casting forms cast iron scroll members with variable thickness to enhance hardness and heat capacity.

A cooling jacket channels lubricating oil around an electric motor armature to remove heat.

Electromagnetic valves selectively communicate fluid to volume chambers based on gerotor member positions, stabilizing output torque and speed variations.

Replacing pneumatic pipes with an electronic control unit and stepping motor eliminates compressed air loss while stabilizing operating pressure.

A vacuum pump uses a rotor-mounted oil outlet to enable smoother discharge flow.

Thicker adhesive layers prevent plasticizer migration to improve bonding retention under high temperatures and chemical exposure.

A pressure loaded journal bearing uses a hybrid pad to increase fluid film thickness via high pressure discharge.

An oil retainer prevents lubricating oil from flowing out of the gap between eccentric portions, ensuring consistent sliding surface reliability.

Differentiated discharge side end parts prevent fuel leakage into the suction guide passage, resolving efficiency loss caused by gear rotation pulsation.

Load balancing via cam ring profile reduces manufacturing precision requirements for vane pumps.

A spring element biases the side plate against the contour ring to compensate for dimensional deviations, preventing disintegration during transport.

Cam protruded parts on the outer ring guide the rotor via pins, reducing casting precision needs and preventing contaminant accumulation in the housing.

A vacuum pump uses an atmospheric non-return valve to prevent lubricating oil backflow into the inlet.

An axial filling channel allows adhesive supply while the end cap seals the outer opening to prevent fluid leakage.

A variable pump seal design incorporates a dedicated foreign matter storage portion to maintain hydraulic pressure and ensure reliable component mobility.

Nesting a bearing inside the screw rotor reduces drive shaft length and bearing load, lowering material costs for larger compressors.

A pump insert uses a mounting structure as a thermal bridge to conduct heat from control electronics.

A uniaxial eccentric screw pump uses variable rotor-stator interference to balance sealing tightness and rotational driving force.

Auxiliary cam balances blade load asymmetry, reducing wear and extending plastic blade life.

Inlet solenoid valve eliminates dead volume and power-off reliability issues.

A connecting channel dampens vibrations in the lubricant pump by compensating for pressure fluctuations from the main oil gallery.

A chamfered cam ring creates a fluid cavity that acts as an axial stop for hydraulic rollers.