Compression Machines TRIZ Cases

A swirl-promoting diffuser keeps refrigerant pressurization and nozzle efficiency stable at low load without increasing ejector size.

A parallel expansion cascade cycle splits supercritical CO2 flow to cut gearbox and inverter losses while keeping generator output stable.

Controlled valve surface roughness and a resin contact layer cut abrasion in regenerative refrigerator rotary valves, extending service life.

Carbon nanotube or graphene layers block axial heat leakage in a cryocooler regenerator while spreading heat laterally to improve cooling capacity.

Multiple helium pressure zones along the regenerator temperature gradient stabilize specific heat and preserve cold accumulation in cryogenic refrigerators.

A buffer tank and valve layout stores and returns refrigerant gas to cut compressor pressure differences, load, and power use.

Heat-driven thermoacoustic resonance replaces motorized pistons, enabling refrigeration where electricity is scarce while lowering cost and wear.

A concave Scotch yoke extends displacer dwell at top dead center, improving refrigerant expansion and cryogenic cooling efficiency.

An adjustable seal changes inertance channel length to tune pulse tube resonance without cryocooler redesign or fluid venting.

Modular compression, cooling, storage, and expansion stages let non-air gases store energy without cavern geology limits.

Heat pipes replace anchor tubes to support refrigerant tubes, boost heat rejection, and reduce leakage risk in high-side heat exchangers.

A flexible vane link between the drive coupler and regenerator piston absorbs misalignment to cut vibration, noise, stress, and heat buildup.

A perforated partitioning tube and buffer cavity induce radial flow to curb regenerator non-uniformity and axial heat losses.

Passive helium convection in up and down tubes switches MRI magnet cooling from 25 K to 4 K without liquid cryogens or mechanical parts.

Series bellows create alternating pump chambers to raise cryogenic liquid pressure with lower pulsation, less buckling risk, and reduced heat leak.

Vertical pipe staging and shrinking flow passages improve heat exchange in a supercritical refrigerant radiator and lower outlet temperature.

A pressure-driven pump recirculates coolant in a Dewar vessel to keep sample levels constant, reduce ice contamination, and speed access.

A cold-end flow rate controller biases DC flow toward the pulse tube to block hot-gas backflow and improve cooling efficiency.

Carbon-adsorbed rare earth regenerator particles suppress oxidation and clogging, helping cold heads maintain cryogenic capacity over long use.

Surface depressions and controlled particle shape raise packing density and helium gas contact without sacrificing flow in cryogenic regenerators.

Pressure-based intermittent compressor halts cut MRI cooling power use while limiting cold head wear and helium loss.

Active coolant circulation and tilt sensing cut rotor cooldown time and maintain superconducting machine cooling when thermosiphon flow weakens.

A ternary HFO-1234yf/HFC-32/HFC-152a refrigerant replaces R-134a with lower GWP, lower pressure needs, and higher COP.

A multi-stage ADR sample cooler enables continuous ultra-low temperatures and rapid sample changes while reducing heat leaks and cryogen handling.

Surface depressions and controlled particle shape raise helium contact area while preserving dense packing and permeability in cryogenic regenerators.

Off-center valve pressing improves sealing near the gas flow path, cutting leakage, friction, and wear in cryogenic refrigerators.

A flow control valve and smaller second refrigerator regulate gas phase and displacement to improve pulse tube cooling efficiency.

A thermal expansion control unit adjusts cold-air flow automatically, enabling non-electric spot cooling with lower noise and vibration.

A mixed refrigerant using R-14 with high- and low-boiling components reaches ultra-low temperatures in one compressor loop while improving stability.

Grooved header openings let flat tubes fit a smaller, lighter heat exchanger while maintaining CO2 burst pressure and simplifying soldering.

Differential thermal contraction creates a shrink-fit cryocooler coupling that improves contact, heat conduction, and assembly access.

Exergy-loss indexing detects small refrigerant leaks earlier than pressure or temperature changes, reducing loss across varying circuit states.

A short passage between the flow straightener and low-temperature heat exchanger improves gas uniformity and boosts 77 K cooling capacity.

Dual flow channels route working fluid through and around the heat exchanger to improve cooling-stage heat exchange while limiting pressure loss.

A tailored ester and ether oil blend prevents phase separation and keeps low-GWP CO2 mixed refrigerants stable in car air conditioners.

Superheated refrigerant defrosts the second heat exchanger through the normal flow path, avoiding auxiliary heaters and high-pressure evaporator design.

A sprayed falling-film evaporator cuts mixed-refrigerant charge while reducing heat and mass transfer resistance in ORC power systems.

Closed-cycle gaseous helium cooling with Joule-Thomson expansion cuts helium loss, avoids sample vibration, and speeds EPR sample changes.

A single compressor with dual expanders and gas flow control cools multiple dewars independently while reducing size, weight, and complexity.

Identical-length gas paths spread flow evenly across the regenerator, cutting pressure drops and improving low-temperature cryocooler performance.

A shared drive and gas pressure differential let two coaxial displacers cut drive torque, save space, and keep cooling capacity.

A two-loop refrigeration layout uses a subcooled secondary refrigerant to prevent pump cavitation while lowering CO2 system complexity and power use.

Pressure cycle monitoring detects cryogenic refrigerator motor faults early and stops the compressor before abnormal loads cause wear.

Independent linear motors let each cryogenic stage tune stroke length, speed, and phase to match cooling demand with less energy waste and vibration.

A sub-cooler reservoir, phase separator, and Venturi metering improve auto-cascade stability, overload recovery, and energy use.

Purge gas first warms the cryopanel above water's melting point, then stops so a heat source can finish heating without convection cooling.

An eccentric gas filter around the suction pipe inlet cuts axial length and raises refrigerant collector fill level without losing filtration.

A HFO-1234yf and difluoromethane blend cuts GWP and pressure burden while improving COP in counterflow refrigeration systems.