Compressor TRIZ Cases

A flexible oil fence absorbs rib-to-shell contact and blocks hot oil from the suction muffler, preserving volumetric efficiency in compact hermetic compressors.

Alternating discrete motor frequencies maintains average cooling capacity while avoiding resonance, noise, vibration, and component damage.

A mixed HFO-1123 and HFO-1234yf working fluid limits self-decomposition under heat and pressure while maintaining cycle performance.

Selective oil return through the injection channel preserves low-speed cooling compression efficiency while preventing lubricant loss and leakage.

An accumulator with a shutoff oil return path and degassing line keeps foreign material out of the compressor and speeds pipeline cleaning.

Pressure drop and temperature sensing close the oil feed valve when liquid refrigerant enters, protecting the compressor and cooling capacity.

Motor current and voltage are used to regulate piston stroke and cooling capacity without position sensors, reducing impact, noise, and cost.

Heating liquid refrigerant collected at low points keeps pressure above ambient during shutdown, preventing air ingress and corrosion.

Asymmetric electrodes drive refrigerant liquid films in two-phase flow, raising pressure with low power and reducing compressor size.

A receiver bypass and superheat-controlled valve remove gas refrigerant buildup, cutting evaporator pressure loss and efficiency drop.

A turbine-driven compressor recovers bleed air energy to pre-cool pack inlet air, cutting ram air use, drag, and fuel burn.

A three-chamber flash tank with a helical flow path improves liquid-vapor separation under transcritical pressure and vibration constraints.

A segmented rotor iron core uses first and second slits to disperse flux, cut eddy current loss, and improve demagnetization resistance.

Using aromatic LCP motor insulation, low-hygroscopic oil, and a flame retardant helps heat pumps resist hydrolysis and refrigerant breakdown.

Injecting hot gas between the inlet guide vane and impeller widens compressor operating range while reducing turbulence and shaft vibration.

Gradual on-duty ramping and extended switching cycles suppress startup inrush current while maintaining low switching loss in DC power supplies.

Dynamic control of expansion valves and injection flow lowers compressor discharge temperature across heating and cooling modes.

An annular lip and check valve coalesce oil from refrigerant flow and return it to the crankcase, reducing cylinder oil carryover.

Multiple refrigerant injection paths and a bypass improve circulation and supercooling, helping heat pumps stay stable in extreme temperatures.

A spring-loaded ball seat and ball shoe decouple side pull from the piston, cutting wall friction and helping maintain a uniform air gap.

A flash gas line and two-stage compression stabilize pressure across medium and low temperature cooling while reducing compressors and vibration.

A dual-chamber accumulator transfers heat between refrigerant streams while separating oil, cutting footprint, heat loss, and power use.

Rotor slits and magnet space portions raise magnetic resistance to cut radial exciting force, reducing compressor motor vibration and noise.

Tapered axial ventilation holes in stator teeth improve heat exchange, stabilize motor temperature, and reduce rotor demagnetization risk.

By changing refrigerant flow direction and velocity, this HVAC circuit recovers trapped oil, cuts leakage risk, and lowers energy use.

A refrigeration working fluid cools an enclosed electrical motor through an integrated housing, improving heat transfer without adding separate exchangers.

A coated solid-lubricant film plus PAG-based refrigerating oil improves compressor startup lubrication and helps prevent seizing under high bearing pressure.

Outdoor temperature feedback identifies refrigerant migration during shutdown, avoiding unnecessary compressor heating and standby energy loss.

A resilient member isolates cover vibration while keeping the compressor plug engaged with the terminal block for stable electrical contact.

Constant-boiling fluorocarbon blends balance low ozone impact, low GWP, and nonflammability for refrigerants, blowing agents, and solvents.

Closing the accumulator oil return during pipeline cleaning keeps foreign material out of the compressor and speeds collection via degassing suction.

Timed refrigerant flow reversal defrosts iced heat exchangers and returns migrated oil to the compressor in cold-zone HVAC heating.

Deflection elements redirect hot oil away from suction and pressure ducts, limiting refrigerant heating and improving compressor efficiency.

Selecting HFO or HFC refrigerants with POE or PAG lubricants enables phase inversion behavior, improving oil return and efficiency across temperatures.

A timed control unit pauses individual piston compressors so oil can rebalance through connected crankcases without disrupting refrigeration output.

Chloro-trifluoropropene refrigerants replace R-123 and R-11 in liquid chillers while preserving capacity, compressor performance, and lower GWP.

A split refrigerant stream subcools liquid in an economizer, lowering discharge pressure and preventing phase change in long piping.

A bimetal thermostat built into the oil sump heating belt cuts wiring, sensors, and installation time while preventing refrigerant migration.

Bypass mixing and a supercooling heat exchanger cut discharge superheat, raise refrigerant subcooling, and improve cold water supply efficiency.

By forming the oil tank inside the motor or impeller housing, this case simplifies turbo compressor assembly and improves refrigerant sealability.

An external heat exchanger cools compressor lubricant while a unitary machined shell improves scroll alignment, lowering complexity and boosting reliability.

A rotating hub-and-conduit layout compresses, condenses, and expands refrigerant in one unit to cut component count and compression energy.

Pressure-equalizing holes in the compressor connector raise suction pressure, lower refrigerant velocity, and cut suction noise.

Fluid connections between tube groups balance airflow and refrigerant distribution in multi-slab heat exchangers, improving heat transfer and reducing frost.

Using inverter power and speed data, the control module calculates condenser temperature to prevent compressor floodback and overheating.

An oil level sensor and control valve balance lubricant flow between compressor and expander casings to prevent seizure from uneven oil return.

A heat-dissipating flat wall places inverter components in dead space to improve cooling, shorten wiring, and shrink compressor volume.

Halogenated alkene refrigerants improve miscibility with mineral and alkyl benzene oils, boosting oil return without oxygenated lubricants.

A flash tank economizer separates liquid and vapor for selective compressor injection, improving transcritical CO2 efficiency and capacity under varying loads.