Rotary Piston Pumps TRIZ Cases

Recessed axial grooves on the roller form suction guide portions that reduce reaction force while increasing refrigerant intake volume.

Segmented flange fixation with bolts on the intermediate housing member increases rigidity, suppressing noise from check valve operations.

A hardened guide body directs a piston rod in a screw compressor capacity control valve, preventing fluid leakage and abrasion caused by rod inclination.

A two-shaft vacuum pump integrates a clamping ring and sleeve extension to enable controlled slippage between the shaft and piston.

Asymmetric inlet nozzle directs cleaning medium away from the longitudinal axis to eliminate stagnation points around the mechanical seal.

Asymmetric scavenge gear assembly minimizes torque oscillation, noise, vibration, and harshness by distributing pressure pulses across parallel meshing sets.

A triangular pump cover with mounting bosses integrates charge, scavenge, and inversion pumps into a single unit.

A scroll compressor hub plate valve member moves between open and closed positions to control fluid discharge timing.

An electric hydraulic actuator uses an O-ring in a radial gap to elastically support the motor housing and maintain shaft alignment.

Angled housing surfaces redirect refrigerant flow to create stagnation near the oil supply path, ensuring adequate lubrication during low load operations.

Electromagnetic clutch engages planetary gearset to drive supercharger rotors, reducing parasitic engine horsepower drain when boost is unnecessary.

Glass fiber reinforced plastic driver reduces wear and noise by optimizing drive shaft flattening distance.

Segmented shaft design with stepped diameters simplifies assembly of helical screws while maintaining structural rigidity against high pressure differentials.

Removable insert secures to vane slot to improve engagement reliability while reducing dead space volume.

Segmenting the drive shaft isolates the gasket part, eliminating power unit detachment to reduce maintenance time and cost.

Cycloid tooth profile modifications increase discharge capacity without enlarging rotor dimensions, reducing ripple and noise in oil pumps.

Segmented rotor design with stationary housing inlet maintains high lubricant pressure at the friction bearing, preventing air leakage from the pumping chamber.

An axial relief valve arrangement minimizes radial protrusion, enabling compact pump device integration within tight transmission case openings.

Elliptical inlet and outlet openings reduce stress on elastic impeller blades, preventing dirt accumulation and wear from fibrous liquids.

A distributor apparatus with intermeshing screw rotors divides flowable material into discrete portions through continuous helical lobe rotation.

A spring-steel support element with radial slots and wings adapts to dimensional variations in vane pump rotors.

Segmented slide valves independently regulate flow and pressure, resolving stability issues at high pressures while reducing power consumption.

Segmented drive-side housing socket exposes the eccentric screw pump joint, resolving the contradiction between structural strength and repair accessibility.

Segmenting the inlet valve closure into discrete steps reduces peak pressure ratios, preventing hazardous vibration levels and mechanical stress.

Silencer recess structures redirect fan airflow to drive modules, resolving temperature complexity trade-offs in vacuum pumps.

Compressed gas mixes with coolant to maintain injection speed and lubrication when reducing power consumption.

A variable displacement vane pump uses dual control chambers to adjust volumetric capacity via fluid pressure forces acting on a movable ring.

An elastomeric crescent with internal gaps absorbs friction heat and prevents back leakage without high-precision machining.

Aluminum screw vacuum pump rotors resist thermal expansion through specific alloy selection and asymmetric profile geometry.

Interference prevention portions on scroll compressor wraps prevent physical contact, reducing leakage gaps and enhancing compression efficiency.

A method determines the reasonable design area of roots pump rotor profiles by establishing performance parameter relationships.

Additive fabrication joins distinct materials in a hollow screw rotor, resolving mass reduction and heat resistance trade-offs.

A press-fitted pin in a single-screw compressor gate rotor disengages under high pressure to vent the compression chamber.

Helical lobe rotors and lateral gas injection reduce noise and vibrations in waste material collection compressors.

Merges the outer gerotor with the electric motor rotor to simplify assembly and reduce sealing requirements in plastic housing designs.

Segmented inlet regions direct axial and radial flow to resolve suboptimal filling at the delivery region boundaries in rotary pumps.

A pump assembly uses a speed-reducing transmission to split drive torque between two parallel gerotor pumps for helicopter lubrication.

Merging the housing part and end cover into a single component eliminates the intermediate sleeve, improving cooling efficiency and structural stability.

Segmented discharge recess and secondary port reduce high pressure areas during fluid flow reversal, lowering back torque to improve energy efficiency.

Replacing poppet valves with a pivotable flap valve eliminates hydraulic damping, reducing housing volume and installation constraints.

Flexible inner sections in gear elements deflect under pressure to minimize back leakage, balancing manufacturing cost with operational reliability.

A metallic bellows synchronizes scroll blades while pins prevent damage from excessive loads.

A relief channel connects the tooth engagement area to the pressure chamber in an internal gear pump.

Segmented oil supply routes separated fluids to rotor grooves, preventing hot oil backflow and maintaining volume efficiency.

Position-limiting protrusions engage cylinder grooves to prevent piston sleeve eccentric rotation, improving working efficiency.

Fluid supply portion positioned between compression cusp and trajectory line atomizes injected fluid via inclined jet impingement nozzles.

Optimized inlet port geometry reduces friction torque and power consumption while maintaining structural integrity through localized wall thickness adjustments.

Segmented lubrication conduits deliver oil to drive couplings, resolving wear issues caused by mounting constraints in diesel engine vacuum pumps.

Variable stiffness leaf springs prevent backflow and pressure losses by sealing the air outlet opening effectively.