Rotary Piston Pumps TRIZ Cases

See how a modular pump design uses a cooling loop and oil lubrication to reduce thermal degrada

See how a screw compressor uses variable-speed control and optimized gate rotor ratio to reduce

See how a one-gate screw compressor uses speed adjustment and optimized tooth-to-groove ratio t

See how an air compressor uses GPS positioning and cloud-based weather data to prevent lubrican

See how L-PPS resin with increased molecular weight prevents sliding part deterioration in comp

See how temperature-based detection prevents compressor flooding by sensing liquid refrigerant

See how a spring-actuated bypass valve equalizes housing and suction pressures when the motor s

See how a valve-based unloading system enables variable speed compressors to unload beyond mini

See how a prognostic unit compares expected and actual compressor power to detect faults early,

See how anodized aluminum Oldham coupling and self-lubricating bearings extend scroll compresso

See how crankcase heating and temperature feedback evaporate liquid refrigerant before startup

See how profile shifted gear wheels reduce flowrate fluctuations and noise in espresso machine

See how simultaneous VFD speed control and mechanical unloader adjustment reduce overcompressio

See how coordinated VFD and mechanical unloader control reduces compressor capacity while maint

Heat-resistant wire coating in the circulation path suppresses HFO-1123 self-decomposition under high heat while preserving low GWP.

Non-contact magnetic drive removes axle passages and undercuts in an eccentric screw pump, making cleaning easier and more hygienic.

Integrated motor-jacket oil channels and a shaft-driven pump cut leak points while cooling and lubricating compact compressor assemblies.

An integrated motor-driven helical rotor stabilizes progressing cavities, improving material displacement and reducing leakage in rotor stator pumping.

By nesting the pump inside the stator teeth, this assembly cuts package size, suppresses noise leakage, and improves motor heat absorption.

A concentric motor-pump layout drives a helical rotor to form stable progressing cavities, improving material flow and reducing leakage.

A brushless DC motor and wobbling-rotor pump cut hand-sprayer weight and vibration while maintaining smooth, self-priming fluid delivery.

A labyrinth seal and thermal spacers limit heat transfer and axial force in hermetic pump magnetic couplings, improving stability.

An integrated resin shaft sleeve and bonded magnet cut press-fitting steps, rotor weight, and bearing mass in an electric liquid pump.

A thermosetting resin body combines casing, cover, and bearing functions to cut pump weight, parts, and machining cost.

A dual-suction pump circulates oil from the housing and tank to cool and lubricate the electric machine with less dry sump complexity.

Cooling fins on the end bell housing help an integrated motor-gear pump save space, dissipate heat, and keep hydraulic ports accessible.

Separating the motor-pump group and control electronics into two housings frees chassis space and reduces electromagnetic interference.

Integrated heat sinking and magnetic status sensing let an explosion-proof pump motor enclosure dissipate heat and report operation without extra flame paths.

Timed pilot torque modulation uses gear angle and pump speed to counter tooth-induced flow pulsation and reduce hydraulic noise.

An axial attachment surface keeps fixing points and flow openings within the motor outline, reducing pump mounting space and assembly bulk.

A metal and resin substrate layout connects inverter components through printed metal patterns, improving cooling while cutting assembly cost and complexity.

A brushless DC motor and one-tooth-offset wobble rotor pump cut weight and vibration while keeping handheld fluid delivery stable.

A vented insulating shield limits refrigerant flow from the motor to magnetic bearings, preventing overcooling and sensor misread at low load.

Adaptive evacuation-cycle speed increases offset wear-related pump efficiency loss, preserving brake booster vacuum over pump life.

A gear-pump hydraulic height adjuster uses a pulsation reducing part to stabilize fluid flow and cut pump noise during vehicle body lifting.

A vented insulating shield limits refrigerant flow and pressure across motor and bearing zones to prevent magnetic bearing sensor overcooling.

Pressure-driven magnetic sensing switches the drum-mounted pump on and off automatically to prevent spills, overfilling, and hose mess.

Separate pump and motor chambers block working-medium contact with the stator and PCB, improving sealing, corrosion resistance, and maintenance.

An accessory flow path diverts excess pump fluid across a thermistor to deliver accurate real-time temperature sensing without degrading pump performance.

By splitting each helical groove into two cutting stages, this case avoids holder-spindle interference and preserves groove alignment.

A continuous opening and uniformly distributed clamping force let scroll compressor workpieces be machined from both sides without re-tensioning.

A spring-loaded slider shifts the discharge position to match internal and external pressure, cutting screw compressor power loss and noise.

A spring-loaded slider changes the exhaust aperture to match pressure, reducing screw compressor power loss and noise.

An integrated crank sleeve and counterbalance cuts scroll pump vibration, reduces parts, and simplifies shaft and bearing assembly.

An air-cushion filler neck limits compressor oil top-up at a preset level, preventing overfilling and improving operating safety.

Reattaching the workpiece for each groove section avoids holder-spindle interference and keeps screw rotor machining precise on standard machine tools.

A separate clean-lubricant feed to the slide bearing pocket prevents particle blockage, wear, and lubrication failure in viscous gear pumps.

An integrated housing bearing supports the pump gear axially, cutting parts count, production cost, and installation complexity.

An air cushion formed by the filler neck outlet limits compressor oil fill level and prevents overfilling without extra aids.

Modulated pilot torque offsets tooth engagement flow pulsations in gear pumps, cutting hydraulic noise while maintaining stable fluid delivery.

Pressurized gas forms a non-contact thrust layer that keeps the orbiting scroll aligned, cutting friction and preventing internal contact.

High-pressure oil from the outlet chamber feeds bushing recesses to stabilize shaft lubrication and improve load tolerance in an external gear pump.

A radially expanded filling pocket and tapering lubrication groove keep gear pump slide bearings lubricated while filtering solids from polymer melts.

Matched mandrel rotation and axial feed form helical rubber hoses with controlled pitch, improving PCP stator manufacturing precision and throughput.

Minute surface irregularities and low-temperature heat treatment help Ni-P plated sliding members retain oil, resist wear, and avoid seizure.

Raised supports and a sliding clamp align pump gears and the port plate, preventing misfit parts and first-run assembly failures.

A bypass flow path routes excess fluid past a thermistor, enabling real-time pump fluid temperature sensing without disrupting primary flow.

A control-unit-designed cutting tool uses spiral and edge parameters to machine multiple rotor grooves at once with higher precision and less energy.

A skeletal lobe structure made by additive manufacturing improves mud motor stator sealing while reducing weight, vibration, and machining limits.

Controlled extrusion roughness helps a styrene-based tube limit fluid contamination while preserving compression recovery in roller pumps.

Centering pins and one-sided bearing bushes align meshing gears, reducing tolerance mismatch, shaft bending, and assembly complexity.

A spline-aligned coupler keeps two gear pump units at a constant phase difference, cutting discharge pressure pulsation and easing assembly.

Porous oil storage and wick feed lubricate twin-shaft pump timing gears while limiting leakage, contamination, and tilt-related drainage.

Internal through holes delay part of screw compressor exhaust to cancel gas pulsation, cutting vibration and noise without oil buildup.

A dual control oil chamber stabilizes cam ring motion under cavitation and bubbles, preserving high-pressure control in variable displacement pumps.

A directional wall and weir in the suction passage separate return and intake oil flows, cutting turbulence, pressure loss, and parts count.

A tongue-shaped outlet protrusion enables controlled gas leakage to prevent dynamic overcompression and improve compressor evacuation efficiency.

A dynamic pressure groove in the restriction component forms a fluid film to improve slidability and reduce refrigerant leakage.