Rotary Piston Pumps TRIZ Cases

Electronic valve disc actuation prevents pressure-induced oscillation and hammering sound during over-compression events.

Segmented chambers branch a partial flow from the main stream, resolving adaptability versus complexity.

An asymmetric low-pressure connection increases cross-sectional area to lower flow velocity and delay cavitation without reducing sealing distance.

Concave trailing tooth flanks create fluid pockets that lower cavitation tendency and noise while increasing pressure ratio.

A back pressure oil cavity at the sliding vane chute tail end fills with lubrication medium to maintain vane attachment.

A segmented housing isolates a dry-running electric motor from corrosive coolant flow while enabling thermal conduction through an intermediary heat transfer section.

Extending the radial contact path on pendulum vanes distributes rotational force peaks, reducing mechanical wear and enhancing pump reliability.

A pump pressure-absorbing member compresses to accommodate volumetric expansion within the cavity.

An asymmetric vane pump rotor scatters torque forces across multiple vibration orders to improve operational smoothness.

Liquid hydraulic cooling removes heat from fixed and orbiting scrolls via internal channels, enabling continuous operation without intermittent cycling.

An access opening in the gearbox section allows backlash adjustment without detaching the drive module, reducing maintenance time.

A compressor dispersion wall directs compressed air across the entire intercooler core to maximize heat exchange surface area.

Internal intake-gas bypass flow path with check valve eliminates external pipes, reducing vibration damage risk and part count.

Nested rotary piston machines with adjustable working angles resolve the trade-off between high fluid pressure and large installation space.

Applying a hydrophobic coating to the stationary housing reduces fluid friction losses, lowering power requirements and extending lifespan.

Collar portion on inner member generates propulsive force to eliminate seal gap and reduce loss torque.

Segmented screw rotors with varying pitch profiles create longer gaps to hinder gas backflow, reducing manufacturing precision requirements at the inlet area.

An integrated screw pump design merges multiple cooling circuits into one unit, eliminating separate manifolds and reducing pressure drop from long pipes.

A sliding member laminate film uses a boron-containing amorphous carbon upper layer with surface protrusions to lower friction under lubricant oil conditions.

Nitrogen purge gas prevents oxidation of near-frictionless diamond-like carbon coated bearings, eliminating viscous losses from oil lubrication.

Hydraulic oil fills a sealed motor chamber to cool the electric motor and controller, resolving temperature increases without adding separate cooling systems.

A gear wheel pump uses segmented sealing rings to isolate the drive shaft interface from contamination.

Transverse recesses in vane fastening sections mechanically interlock plastic materials to secure wing ends.

Differentiating radial widths on the cam ring seal surfaces suppresses oil leaks and stabilizes control pressure without increasing overall pump weight.

A gear pump uses a resin housing with an insert-molded metal core to reduce weight while maintaining rotor positioning accuracy.

A scroll compressor positions check valves along the rotation axis to prevent mutual interference between fluid paths.

Mirror-symmetric piston sections counterbalance radial shaft loads, reducing friction and bearing stress for extended component lifespan.

Pre-formed alignment surfaces on screw pump rotors allow a dedicated tool to position components accurately, reducing manual adjustment time.

Injection ports opening to suction chambers prevent refrigerant overflow into the oil sump, maintaining compressor reliability and efficiency.

Flexible shell reeds prevent backflow and reduce noise without increasing pressure drops.

A lock piston engages a gerotor displacement mechanism to prevent rotation, resolving size constraints in high-torque hydraulic applications.

Drive gearwheels direct axial force toward the inlet side, eliminating prestress mechanisms and reducing device complexity while maintaining rotor stability.

Internal pressure gradients route lubricant from a sump to rotor interfaces, eliminating bulky roller bearings and reducing machine size.

Independent drives align the conveying unit and pump to eliminate directional changes, ensuring reliable transport of various viscous media.

Liquid water lubricates the rotor gap in a rotary vane steam compressor, eliminating complex separation processes for compressed vapor.

A lobe pump design uses an asymmetric contour to increase chamber volume while maintaining compact construction.

Longitudinal grooves in gear pump stators channel adhesive through mechanical play to fix tubular bushes, reducing assembly complexity.

Dynamic balance piston control adjusts fluid pressure to cancel thrust forces, extending bearing life under varying discharge pressures.

Removable housing insert unit containing spindles and bearings simplifies screw spindle pump maintenance by eliminating full disassembly.

Spring-loaded pistons constrain rotor orbit to prevent stator deformation and gap formation, restoring flow rate and pressure output.

A back pressure valve increases under vane pressure in a vane pump, resolving insufficient cam ring rotation speed caused by low friction force.

Strengthening materials reinforce resilient polymer layers in directional drilling assemblies to enhance structural durability.

Asymmetric cam ring angles generate bias force from fluid pressure, eliminating spring complexity.

A compressor system adjusts its volume ratio via a bypass valve to match operating pressures.

Asymmetric vane tips create net outward radial force via pressure distribution, eliminating under-vane pressurization and reducing adhesive wear.

Dual-radius eccentric pin geometry prevents bending under centrifugal force, enabling scroll fluid machines to operate above 145 rotations per second.

A vane pump valve body integrates a permanent opening hole to reduce metallic noise without extra manufacturing steps.

Separating the drive and detection shafts allows a thicker detection portion to suppress vibration, restoring measurement precision lost during assembly.

A buffer member between the orbiting groove and balance weight absorbs shock in scroll compressors.

Flexible shells and thin films isolate the guide portion from foreign matter, ensuring smooth adjustment ring mobility without structural complexity.