Compressor TRIZ Cases

Excess oil is drained from the thrust ball bearing to prevent stagnation, cut viscosity resistance, and keep sealed compressors quieter.

A self-regulating oil recirculation feature uses suction gas entrainment or bypass flow to keep compressor lubrication balanced in variable refrigeration cycles.

Chloro-trifluoropropenes replace R-11 and R-123 in negative-pressure chillers while preserving lubricant compatibility and chiller capacity.

Dual spiral passages balance chamber pressures to set variable back pressure, cutting contact force while preserving scroll compressor sealing.

A wide-range AC input with rectified DC link power lets one switchgear cooling unit run across regional voltages while reducing variant complexity.

Pressure-based defrost control keeps expansion valves balanced in transport refrigeration, preventing refrigerant trapping and compressor risk.

Outside-air ducting and dedicated fans keep a trailer refrigeration inverter within range, supporting stable compressor power even when parked.

Valve-controlled case pressurization cuts refrigerant leakage and improves compressor recovery efficiency in air conditioning service units.

Low-velocity refrigerant spray cools chiller compressor motors evenly without extra pumping energy, reducing wear and chemical attack.

Air-gap flux barriers and unequal tooth widths cut cogging torque and vibration while preserving efficiency and rotor rigidity in compressor motors.

A high-position oil return hole and controlled two-phase flow keep liquid refrigerant out of the compressor while preserving cycle efficiency.

A perpendicular inlet and centrally grouped outlet ports suppress swirl and turbulence, keeping refrigerant flow to multiple compressors stable.

A controlled polyvinylether molecular weight range improves lubricity, compatibility, and flame retardancy with mildly flammable HFC refrigerants.

Separate working-fluid paths cool the motor and compression mechanism, improving heat exchange and fluid management in climate-control compressors.

A refrigerant injection circuit boosts cabin heating while limiting heat absorber frost and excess dehumidification at low outdoor temperatures.

Ambient-temperature and sump-superheat control keeps idle tandem compressors from restarting with refrigerant-diluted oil, improving HVAC reliability.

Predetermined compressor frequency ranges and staged operation cut low-load on/off cycling in refrigerant-based AHU heat pump systems.

Varying medium-pressure passageway cross-sections cuts refrigerant pressure and velocity fluctuation, improving compressor efficiency and energy use.

A non-sliding shaft section buffers bearing deformation during stator press-fitting, preventing solid contact and wear in sealed compressors.

Independent rotor and stator cooling paths remove phase-change monitoring from centrifugal compressor motor cooling, improving reliability and stability.

Ambient-temperature control delays tandem compressor restart until sump superheat is safe, preventing oil dilution and compressor damage.

Straight inner slot surfaces restrain arc magnets without narrowing the hole, preserving air gaps that improve demagnetization resistance.

An upper integrated intercooler in a CO2 heat exchanger cuts heat radiation loss and icing while improving air-cooling reliability.

A bottom-reaching inlet and vented calm chamber stabilize oil level reading in turbo compressors despite turbulence, foaming, and bubbles.

A passive oil balancing pipe layout uses pressure differences to prevent oil starvation and excess oil distribution in multi-compressor refrigeration.

An integrated oil-cooling circuit recovers compressor heat into hot water, extending high-temperature heat pump operation and reducing complexity.

Opposed rotor magnets balance crankshaft deflecting force in a compressor, cutting vibration and noise without balance weights.

A hermetic plated vessel with in-situ pressure sensing limits hydrogen leakage and seal degradation in electrochemical refrigeration.

An alcohol additive keeps HFO-1234yf and ammonia homogeneous over a wider temperature range, reducing demixing in heat-transfer fluids.

When HVAC sensors fail, the controller disables faulty CSSH threshold logic, starts crankcase heaters, and keeps tandem compressors running safely.

Sequential valve opening before pump startup cuts control circuit complexity and suppresses abnormal heat medium pressure in building HVAC.

Optimized rotor slit area in a ferrite interior permanent magnet motor cuts radial exciting force, vibration, and noise without losing torque.

Dynamic torque control by crank angle cuts low-speed compressor vibration noise and enables safe shutdown without braking torque.

Oil separators, balance pipes, and valves keep lubricant distributed across multiple compressors, preventing oil imbalance and unstable heat-pump operation.

A two-part HVAC/R composition uses 2,2-dimethoxypropane to remove moisture before silane sealing, avoiding acid formation and clogging.

A ternary R32/R125/R134a refrigerant blend lowers GWP while preserving R404A-class capacity, COP, and non-flammability.

Straight contact surfaces and side air gaps restrain arc magnets in an IPM rotor, limiting movement and preserving demagnetization resistance.

By sensing refrigerant temperature after compressor preheating, this case enables near-zero superheat control with less flooding risk and better efficiency.

A chromium gradient interlayer and DLC vane coating cut residual stress, prevent peeling, and improve long-term wear resistance.

A PCM-filled compressor cover stores operating heat and releases it during shutdown to keep HVAC compressors warm without auxiliary heaters.

Variable fan control and staged oil heat exchange recover waste heat while keeping compressed gas temperature stable under changing loads.

A non-sliding shaft section keeps a gap at the stator-fixed bearing, preventing solid contact wear and improving sealed compressor durability.

Potting epoxy, a wire separator, and a cap seal motor terminals from conductive ammonia, preventing short circuits in refrigeration systems.

A spaced discharge cover and support rib protect the cylinder inner wall from deformation while preserving compact compressor layout.

Bypassing and heat-exchanging refrigerant into the accumulator keeps R32 and oil mixed, preserving heating condenser capacity while limiting foam.

A compressor microcomputer adjusts RPM from prior duty cycles to maintain refrigerator temperature while cutting controller cost and power use.

Uses motor stator windings for scheduled crankcase heating to prevent cold starts, liquid migration, and wasted energy.

Check valves in suction or discharge passages block liquid refrigerant during shutdown, preserving insulation and easing compressor startup.