Mechanical Apparatus TRIZ Cases

See how a mixing tank and bypass valves enable fixed-frequency screw units to run continuously

See how a heat exchanger transfers compressor discharge heat to flash gas, increasing superheat

See how a dual-unit analyzer uses pressure differentials and temperature sensing to measure lin

See how an ejector combines refrigerant flows to expand heat pump operational range to −15°F wh

See how a three-stage cascade refrigeration circuit cools fluid to -70°C using standard compres

See how a duct-based UV disinfection system uses controlled air flow and spatial segmentation t

See how pulse tube, throttling, adsorption, and dilution units combine in staged pre-cooling to

See how a bypass valve artificially increases refrigerant load to maintain compressor speed and

See how a sweeping strip driven by cover plate motion removes condensate from the air deflector

See how dual four-way valves enable staged defrosting of outdoor heat exchanger upper and lower

See how a mobile robot integrates air purification, humidity control, UVC disinfection, and AI-

See how electric motor-driven three-way valves replace pilot four-way valves to reduce pressure

See how a reflection-adjustable laser module forms a dense UV net to kill airborne pathogens wi

See how a larger-diameter hot gas line with check valve bypasses suction-line flow restriction

See how user-adjustable fan speed and operation time resolve the contradiction between drying e

See how series-coupled R-32 sensors with self-diagnostic tests detect A2L refrigerant leaks pro

See how sequential fan turn-off after cooling reduces noise and microorganism release while mai

See how pressure and outdoor-air temperature detection enable refrigerant leakage monitoring in

See how four two-way valves replace costly four-way valves to reverse process fluid direction,

See how segmented electronic expansion valves detect indoor refrigerant leaks and shut off flow

See how an obliquely disposed rotary wheel with moisture adsorption eliminates compressors and

See how dynamic target temperature adjustment maintains air conditioner power savings over time

See how two independently operable direct-drive blowers eliminate belt losses, optimize airflow

See how a scattering wheel and water-level sensor remove stored water and foreign substances fr

See how a buffer tank with dual-mode temperature control reduces refrigeration machine cycling

See how HVAC leak sensors measure speed of sound and thermal conductivity to distinguish fuel f

See how staggered defrost cycles on multiple evaporator coils maintain indoor temperature stabi

See how periodic drainage and valve control prevent mineral precipitation and biofilm clogging

See how temperature variation analysis detects installation issues like open windows or blocked

See how dual limit structures stabilize a lock shaft in both locked and unlocked positions, res

See how a drone-deployable air cleaner uses liquid capture and extendable pipes to filter pollu

See how dynamic pressure set point adjustment and feedback control enable variable-speed compre

See how variable-speed intake and exhaust fans balance airflow and pressure in HVAC systems to

See how a buffer tank with dual-mode temperature control reduces compressor cycling during stan

See how periodic valve control and drainage lines prevent evaporative condenser nozzle clogging

See how dynamic switching between differential and single communication modes over refrigerant

See how dielectric barrier discharge generates oxygen ions to remove PM2.5, VOCs, and microorga

See how a light guide member redirects backlight to the display panel edge, extending illuminat

See how vibration devices automatically loosen debris from adiabatic cooling pads, maintaining

See how a selectively transparent door panel with knock detection and lighting control lets use

See how LED color changes and projection ring illumination improve HVAC mode clarity and reduce

See how a dual-cavity heat exchanger with circulating airflow maintains electric control box se

See how primary and secondary cooling-heating units with prioritized loading enable efficient l

See how stopping the low-stage compressor and reducing high-stage speed before valve switching

See how cutoff valves in high-order and low-order refrigerant circuits block flow through non-f

See how refrigerant concentration sensors, inert gas release, and fire detection enable automat

See how a single-stage CO₂ multi-split system uses carbon dioxide's low viscosity and large pre

See how modular panels and glove-port intermediaries maintain hermetic sealing for OLED printin

See how recovering and regenerating low-GWP, non-flammable refrigerant from existing facilities

See how a control unit switches from heat pump to separate heat source when flammable refrigera

A backlight unit employs a light shielding structure on the light guide plate protrusion to block stray emission paths.

Back illumination of the non-display region matches its luminance to the black display area, removing visible boundaries without darkening layers.

End cap knockouts integrate electrical enclosures into compact fixtures, resolving space constraints while maintaining secure mounting.

Light guide walls along eyeglass edges transmit peripheral rays to eliminate black obstacles and expand the viewing angle.

Nested annular light guides and movable reflectors reduce eyewear volume while maintaining wide field-of-view image quality.

A three-dimensional solid-state LED light engine creates realistic jumping flame effects using electronic control patterns.

Curved bottom sash reflects backlight light to display panel, eliminating the bulky light guide plate and reducing device complexity.

Raised flat surface on LED pad mount heat sink supports optical device and LED on common plane for precise alignment.

Elastically deformable racks in a helmet adjustment mechanism disengage from the pinion when forced, preventing damage to the teeth and connecting means.

A light source module uses inverse prism sheets to refract light from a single guide plate for dual-sided emission.

Optical fiber filaments transmit LED light through cap embroidery, resolving the trade-off between device complexity and decorative visibility.

A connecting light guide merges principal guides into a continuous C-shaped path, eliminating shadow areas at contact surfaces.

Multi-level dimming pits in a light guide plate redirect light to dots, resolving the trade-off between backlight efficiency and uniform distribution.

Padding blocks maintain spacing between the back plate and reflector plate to prevent vibration-induced scratches and deformation.

A light guide plate uses a frusto-conical introduction portion to distribute incident light in multiple directions within a single plane.

Nanoparticle dispersion in a solid matrix replicates natural skylight spectral distribution by balancing Rayleigh scattering against transmittance loss.

Recessed edge regions on the light guide plate relocate circuit boards, reducing overall device thickness while maintaining reliable light source fixation.

Bendable extensions on the heat-radiating sheet connect to external sources, distributing thermal energy across the module without increasing thickness.

An occupancy tracking system detects user devices to predict room presence and adjust HVAC settings.

Rotating a light baffle alternately blocks and unblocks laser beams, creating irregular twinkling spots that reduce visual fatigue from static illumination.

Partition walls on the heat sink base increase surface area to dissipate LED heat, preventing overheating during outdoor operation.

Transparent encapsulation forms an optical launch directly coupled to the waveguide, eliminating absorptive losses and reducing backlight unit thickness.

Integrating coupling protrusions into the mold frame eliminates separate fasteners, reducing assembly time and weight while maintaining structural security.

An aluminum-coated optical fiber detects fluoride via reflectance changes.

A pool light assembly uses a water inlet housing with ridges to circulate pool water around lighting elements for direct thermal management.

Segmented waveguide regions eliminate vignetting and dark outer portions, enabling uniform illumination for autostereoscopic displays.

A method coats uncrosslinked elastomer mixtures inside a hollow channel to form flexible optical waveguides with high mechanical stability.

Pivotal fourth plate aligns disk drive mounting pillars, eliminating precise angular alignment requirements during installation.

Frusto-conical channels and internal fins dissipate LED heat through convection, preventing thermal overload during optical reconfiguration.

A passive magnetic device generates torque to counteract gravitational forces on articulated mechanical arm joints.

Curving the connecting member places the damper vertically below the axis plane, avoiding lateral component shifts and reducing assembly costs.

Reflective surfaces in a single light guide body distribute light from one source to separate portions, reducing component costs.

Segmenting a waveguide into leakage points distributes light from one source, reducing power and heat while maintaining effective eye illumination.

Varying structural layer thickness and an integral flexing fin absorb heel strike impacts to reduce user fatigue.

Reinforcement members coupled to waveguide assemblies reduce deflection under flexural loads without interfering with optical functionality.

A compact LED light source device uses a polarization converting element to align light exiting a light guide into one direction.

Segmenting the controller into an external FastCap eliminates re-certification testing by separating safety approval from control functionality.

Segmented output diffractive optical elements redirect light to expand the eye motion box, resolving limits on visible region size in AR displays.

A retractable lamp seal uses a grease reservoir and protective vent to maintain watertight integrity during vertical movement.

Metal housing with screw terminals replaces fragile plastic snap-fit designs, preventing damage during well light installation.

Segmented viewing zones in the backlight unit deliver independent 3D images to each eye, reducing processed data and eye fatigue.

Printed circuit board forms lamp housing outer wall to resolve thermal resistance and assembly complexity.

Replacing electroluminescent wires, this assembly transmits light via optical fibers to resolve flexibility and stress resistance issues in rotating straps.

Liquid crystal layer rotates polarized light orientation to block or transmit light, resolving contrast versus weight trade-offs in display apparatuses.

Radially clamped elastomer ring on the shaft reduces stick-slip effect in pivotable dental lights, enabling precise alignment without jerky movements.

An anti-reflection structure on the third surface of a light guide device suppresses stray light reflections and reduces ghosting in display apparatuses.

A telescoping steering system uses a locking pin and detents to adjust handle bar height without hydraulic components.

Segmented back plates with extension portions allow easy light bar insertion, preventing deformation to improve luminous efficiency.

Diffractive filtering redirects out-of-band wavelengths to eliminate ghost images and reduce optical losses in waveguide displays.

A light guide panel redirects ambient light to a sensor, eliminating chassis penetrations and reducing occlusion.