Multi-Stage Pumps TRIZ Cases

See how an electric control valve with suction-pressure sensing replaces gas-filled bellows to

See how separated discharge-side and intake-side passages with a pressure-sensitive bellows imp

Coupling the swash plate and piston barrel to one drive shaft cuts shoe friction, heat, and wear in variable displacement piston pumps.

Eccentric rotatable ball guides absorb spherical-hole pitch deviation in swash plate supports, maintaining contact area and reducing wear.

A preloaded face seal in the hydrostatic shoe cuts swashplate leakage and wear, improving low-speed pump and motor efficiency.

Flow grooves, connection grooves, and oil supply holes route crank-case oil to the drive-shaft seal, reducing frictional heat and leakage.

Dual bleeding passages control crank-chamber oil to preserve lubrication.

A two-way wobble plate compressor uses bearings between the rotor and wobble plate to reduce friction loss.

Pressure balance openings in the bridges between control passage sections equalize fluid pressures to prevent cavitation erosion damage on structural parts.

Variable displacement swash plate compressor uses non-uniform connecting arms to optimize weight distribution near the rotation axis.

Opposed pistons balance axial loads while a closed-loop lubrication system prevents working fluid contamination and energy loss.

A variable capacity compressor uses a spool valve to control refrigerant flow between chambers.

A control valve for variable displacement compressors uses a sealed chamber to isolate pressure zones and reduce sliding resistance.

Pressure clamping secures drum sleeves against the plate, preventing tilting and leakage caused by excessive tangential motion.

Axial projections on the valve body penetrate the grooved ring space to create a form-fitting radial lock, preventing loosening under vibration.

Static head with parallel cavities eliminates rotating revolver mechanisms, reducing pulsations while enabling precise volumetric flow regulation.

A control valve adjusts swash plate angle using multiple selectively opened orifice holes to regulate refrigerant flow between compressor chambers.

Valve design minimizes startup time and improves operating efficiency by restricting unnecessary refrigerant gas flow from the control chamber.

A variable stroke pump adjusts flow rate via a dynamically tiltable wobble plate driven by a linear actuator assembly.

Local heat treatment on the first swash plate arm increases strength and disperses contact pressure to resolve abrasive wear during variable capacity control.

Integral copper alloy swash plate eliminates coating steps while providing bearing properties to reduce friction in variable displacement compressors.

A zinc phosphate film coats swash plate compressor pistons to reduce friction at shoe contact points.

Pivoting cylinder assemblies eliminate side loading forces that reduce motor efficiency in conventional radial piston designs.

A magnetic encoder uses a ferromagnetic plate to shield sensors from interference caused by moving pistons.

Segmented pivot pins reduce drive shaft diameter and improve volumetric efficiency in variable displacement compressors.

Grooved shoe cylindrical portion holds lubricant oil to feed sliding surfaces during swash plate compressor startup.

Actuator rotates integrally with drive shaft while fulcrum and action point sit on opposite sides, resolving force transmission complexity.

A bimetallic bushing with an anti-friction coating guides rotation between the pin and cylinder body.

Orifice control mechanism adjusts effective flow area to manage refrigerant discharge in variable displacement swash plate compressors.

A variable displacement compressor control valve adjusts release passage area to optimize refrigerant flow dynamics.

A variable displacement swash plate compressor uses segmented cylinder blocks with distinct bore diameters to manage actuator pressure.

Segmenting the lug plate connection into guiding and power zones distributes concentrated loads, reducing friction and improving durability.

Segmented pressure gradient grooves with overlapping distal ends control fluid flow to reduce noise and pressure pulsations in hydraulic drive units.

Segmented pumping chambers and independent valves resolve volumetric efficiency losses while maintaining precise limit pressure settings.

Dual springs balance swash plate inertia moments at high speeds, reducing power consumption while maintaining secure compression operation.

Segmented solenoid control valve design increases refrigerant flow rate during startup by separating sub-valve and main valve elements.

A wobble plate compressor rotation prevention mechanism uses shaped inner and outer rings to transmit power via balls.

A gap adjusting member fixes the rotating shaft axial position relative to the casing.

A two-stage natural gas compression system drives a liquid piston compressor via a hydraulic pump to achieve near-isothermal efficiency.