Mechanical Apparatus TRIZ Cases

See how an air conditioning system stores thermal energy during clean-grid periods and releases

See how exposing the drainage hole at the air inlet side reduces negative pressure, prevents co

See how trial-operation pressure baselines and segmented detection phases enable early refriger

See how distributed micro chillers with a shared water loop eliminate extreme-temperature maint

See how a short-circuit mechanism between cables enables refrigerant leak detection and protect

See how merging HVAC and fire suppression into one air handling unit reduces installation footp

See how a beam-formed ultraviolet radiant film inactivates levitating pathogens and evaporates

See how a wireless power transmitter in the PTAC receptacle eliminates power cords and enables

See how a circulation path with heaters and pump maintains process fluid above freezing in free

See how facing dual blowers with segmented fans increase air suction per unit time while mainta

See how a dual-line water supply system with filtered cleaning cycles prevents mineral clogging

See how a rotatable discharge assembly opens the convergent space to simplify electric componen

See how a single communication unit associates unique device IDs to enable collective managemen

See how an integrated charge collector with separated accumulator and receiver compartments opt

See how dual-antenna selection based on real-time signal strength resolves wireless communicati

See how distributed vent assemblies with sensors and effectors enable independent zone control,

See how a modular ceiling system merges air handling, lighting, patient lift, and disinfection

See how a heat storage heat exchanger absorbs heat to defrost the outdoor unit while keeping in

See how modular segmentation, integrated sensors, and motorized dampers enable rapid HVAC insta

See how adjusting compressor frequency, valve opening, and wind speed enables accurate refriger

See how an air scoop and heat sink manage UV-C LED heat in HVAC ducts, extending light source l

See how dual time-scale control matches terminal and indoor temperature response times to reduc

See how an automatic on-off valve drains water at low temperatures to prevent plate heat exchan

See how Wi-Fi infrastructure replaces CO2 sensors for real-time occupancy detection, enabling p

See how camera-based device detection and chirp signal verification automate patient-device ass

See how an expansion chamber uses adiabatic fluid expansion and phase transition to improve the

See how a segmented pet seat with detachable elevation piece enables pet proximity without occu

See how a sliding indoor unit with locking assembly resolves the contradiction between low-posi

See how sensor-based occupancy prediction and stored climate preferences enable automatic HVAC

See how a portable tankless water heater uses smartphone intermediaries and feedback loops to e

See how a magnetic fastening interface enables tool-free attachment to ventilation outlets, red

See how a bridging member with internal flow passages connects multiple heat exchangers into on

See how a controller integrates disinfection with temperature control using Pareto optimization

See how integrating SOC, discharge efficiency, and HVAC consumption power enables accurate usab

See how networked gas detectors, cloud computing, and AI-driven control achieve cleanroom-level

See how energy balance checks validate sensor data and select reference chillers to maintain ac

See how dynamic HVAC filtration uses infection risk feedback to activate in-zone devices only w

See how position and face detection adjust air discharge direction and intensity to remove cont

See how a circulating water tank with automatic drainage and recovery prevents microorganism bu

See how a porous enclosure with hygroscopic material traps moisture during cool periods and rel

See how automatic time-based fault clearing reduces HVAC troubleshooting time by managing fault

See how dynamic low-pressure valve control maintains evaporation pressure to prevent frequent u

See how compressor frequency control based on dew-point temperature enables uniform ice formati

See how a dual-circuit cooling system uses a restrictor and separator to maintain negative pres

See how a defrost bypass pipeline routes high-temperature refrigerant from the compressor to he

See how a connection flow path links dust filtration and UV sterilization units to remove conta

See how sensor-based shutdown control prevents compressor short-cycling in refrigerant systems

See how a thermally regenerative battery stores off-peak energy to power air conditioning durin

Historical room heating response lets a PTAC thermostat set deeper unoccupied setbacks while still restoring comfort quickly with resistive heat.

A controller uses air quality and blower runtime feedback to clean indoor air between HVAC calls while limiting energy use and tracking filter life.

Temperature and pressure feedback adjust a motorized expansion valve to maintain superheat and prevent liquid refrigerant from reaching the compressor.

Predicted indoor temperature drift is matched to actual readings to confirm HVAC shutdown during peak demand events without extra hardware.

LEDs built into the refrigerator control strip and evaporator recesses cut mechanical lighting parts while improving interior and drawer illumination.

Orthogonal return-water jets mix cool inlet flow with heated boiler water to reduce temperature striations and thermal shock.

A decoupling coupling mechanism lets a table top unlock from either side while keeping the opposite actuating device fixed.

An intermediate relief device drops CO2 pressure to 5-40 bar, cutting throttling vapor, line size, refrigerant charge, and material cost.

By adjusting high-side pressure from room and refrigerant outlet temperatures, heating capacity stays stable without excess energy use.

A dual-axis limb support for birthing beds lets caregivers unlock and reposition leg and foot supports together for stable delivery positioning.

A flow barrier around the flap smooths throttling across closing angles while differential pressure sensing improves airflow regulation.

When aircraft are parked with engines off, fixed minimum ventilation demand cuts fuel use, emissions, and cabin air-conditioning noise.

Real-time voltage and current monitoring adjusts powered anode protection, predicts tank corrosion failure, and enables early maintenance.

A threaded gear and parallel linear guide stabilize the brewing piston drive, cutting radial vibration, noise, size, and drive complexity.

Periodic inverter status communication lets the outdoor unit reset and restart the compressor drive after faults without extra watchdog hardware.

Controller logic cycles the condenser fan and ignores early low-pressure trips to keep air conditioning reliable in low outdoor temperatures.

Fold-aligned active carbon bellows layers raise adsorption and filtration while keeping pressure loss low and fitting curved housings.

Run-time-based speed switching lets discrete thermostats control multi-speed HVAC units, cutting energy use and noise without rewiring.

By holding the heat-exchanger temperature difference in range, this control avoids refrigerant instability and indoor coil superheating in cold-weather cooling.

Solid anion exchange membranes capture ambient CO2 at atmospheric pressure, cutting compression energy and pressure drop.

Humidity sensing disables indoor fan run-on or continuous operation when moisture is high, preventing condensate re-evaporation indoors.

A prioritized controller trims compressor and fan capacities to cut power while holding temperature, humidity, and suction temperature limits.

Multiple sleep sub-modes shift indoor temperature across falling asleep, deep sleep, and waking to improve comfort in cooling and heating.

A movable airflow path and duct conduit let one HVAC sensor measure duct or room conditions with simpler installation and fewer parts.

A single motor, planetary gear, and magnetic brake let a furniture drawer drive open and close smoothly without added installation complexity.

Separate X and Y drives in one plane cut table height while enabling precise pill dispensing across vials and blister packs.

A priority algorithm holds key compartments at setpoint and limits refrigerant flow elsewhere to stabilize transport cooling under high load.

Synchronized workflows, smart templates, and guided navigation turn complex building analysis into clearer reports and faster design decisions.

Sealed rack aisles use bleed opening flow sensing to control cooling air temperature, humidity, and flow rate while cutting data center energy waste.

By converting set temperature and relative humidity into target absolute humidity, this control approach keeps room comfort stable despite temperature changes.

Dynamic span and duty-cycle updates match thermostat cycling to room thermal behavior, cutting temperature swings and improving energy efficiency.

Curved support panels below the bed pivots spread patient load and reduce compression and pressure sores during lying-to-sitting adjustment.

Expansion valve timing control holds refrigerant superheat through batch-mode switching, preventing liquid return and unstable humidity operation.

Pressure- and flow-based wheel speed control maintains purge effectiveness in VAV ventilation while limiting contaminant carry-over and energy use.

A one-piece condensate pan float switch uses base mounting and slotted inlets to prevent wobble, clogging, and unreliable shut-off.

A force sensor spread across the flap blade averages airflow load, reducing hysteresis and signal spread for accurate low-flow control.

Switching two adsorption heat exchangers between evaporator and condenser roles enables dehumidifying, humidifying, cooling, and heating with simpler HVAC hardware.

A controller balances latent heat removal across zoned A/C units using humidity and sensible load data to cut energy waste and avoid reheating.

Capacitance sensing on a clamped drainpipe detects condensate blockage early and shuts down the compressor to prevent overflow damage.

Bypassing condensed refrigerant to the compressor intake prevents thermal stress during high-temperature device testing while widening control range.

Varying compressor restart and shutdown order balances runtime in multi-unit air conditioners, extending compressor life and reducing maintenance.

Wireless MEMS microsystems capture temperature and humidity to drive heat-index HVAC control with lower wiring cost and broader building coverage.

A water heater case showing how thermal fuse melting or pressure sensing detects burner flashback and shuts off fuel flow.

A split LCD combines dot-matrix text with fixed icons so thermostats can show scrolling messages, energy data, and clear status cues.

Pressure-sensor feedback cuts supply airflow before a safety-room door fully closes, reducing pressure spikes and door slamming.

Bottom-routed inlet and outlet ports preserve condensate-bowl sealing while allowing heat exchanger service access without disassembly.

A fine-wire heat exchanger with balanced airflow recovers room heat efficiently, cuts duct space, and resists freezing in cold climates.

A side pivoting battery tray lets users replace HVAC controller batteries without dismounting the unit, while preserving internal space and contact reliability.

A solenoid, lever, and floating ball route water between appliance compartments with less wear, lower complexity, and precise movement.

Discrete wetting and heating cycles in a porous evaporator regulate chamber humidity precisely while limiting heat input, energy use, and contamination.

Separate heat-source and use-side refrigerant loops contain hazardous leaks indoors while preserving stable cooling and heating capacity.

A keyed ribbed holder and asymmetric scent pad prevent incompatible inserts, improving humidifier scent release and avoiding damage.

Pressure-difference feedback adjusts pump flow to balance coolant across branch pipes, reducing board temperature fluctuation and instability.

Alterable zoned airflow and motorized dampers pull particle-laden air to filtered registers, improving indoor particle capture.

Multiple flash chambers and throttle control enable precise staged air replenishment for multi-stage compressors and better energy efficiency.

Selects which chillers to start or stop from COP and load conditions to raise whole-system efficiency under changing demand.

Pleated water-permeable membranes create a self-supporting ERV core that cuts pressure drop while improving heat and moisture exchange.

Spring-loaded bus conductors and shelf brackets keep adjustable refrigerator shelf lighting reliably powered across multiple mounting positions.

A closed CO2 defrost loop uses thermosiphon circulation and latent heat to melt frost with lower power, less piping, and stable freezer temperatures.

By learning set-temperature duration and occupancy patterns, this case balances air conditioning comfort with lower energy use.

A shared heat-medium loop cools multiple liquid paths while selective electric heating preserves accuracy and cuts heater and evaporator cost.

Commercial building HVAC loads track low-frequency regulation signals to stabilize grid frequency while preserving indoor comfort.

Rotatable airflow guides redirect fan air toward hotter thermal regions, improving cooling under uneven CPU and GPGPU load profiles.

Camera-based code and symbol matching authenticates disposable components so smart appliances can track lifetime accurately and block unauthorized parts.

Indoor-side controllers use outdoor-set evaporation or condensation temperatures to stabilize multi-split operation despite pipe temperature shifts.

A focused light cone highlights the crisper drawer center while preserving humidity, making fresh food easier to see and keep fresh.

Distance and estimated return time are used to avoid wasteful stop-start AC control while preserving comfort during short absences.

Sensors and environmental controls calm anxious pets automatically with sound, vibration, temperature adjustment, and remote interaction.

A representative temperature value synchronizes thermo-ON/OFF across indoor units to improve shared-space AC efficiency and comfort.

Constant Delta T pump control matches chilled and condenser water flow to load, cutting energy use and avoiding Low Delta T Syndrome.

A third heat exchanger redirects two-phase refrigerant for moderate battery and power electronics cooling while improving vehicle thermal conditioning.

Switching between intermediate and suction refrigerant injection suppresses R32 compressor discharge temperature without sacrificing efficiency.

Tapered reflection faces in a single-source light guide spread light evenly across an emblem while keeping the profile thin and the LED less visible.

A switchable layer and spaced light guide create dark pixels in a transparent vehicle display while preserving background visibility.

A telescopic arm, adjustable legs, and crank drive help a portable site light deliver stable illumination on uneven, power-limited work sites.

A rotating light output member lets one light source feed multiple optical fibers for varied lighting patterns with lower cost and simpler control.

A light-scattering area enclosing transparent regions keeps vehicle roof illumination subtle by day while preventing jagged pattern edges at night.

An edge shielding structure absorbs unconverted blue light near the substrate to improve light conversion purity and output color quality.

A protruding light input with nonparallel surfaces and conical reflectors improves transfer, homogeneity, and brightness in compact branched vehicle lamps.

A longitudinal and transverse light guide layout mixes RGB light before exit, enabling uniform vehicle interior illumination with fewer parts.

Slots, bulge portions, and micro-structures in the backlight module improve light mixing and uniform keycap illumination with low-power LEDs.

A luminaire conceals a wireless antenna inside its housing while reflective surfaces preserve signal direction and network connectivity.

Micro-structure regions and a reflective light guide layout recycle and mix light to keep keyboard keycaps evenly lit with low-power LEDs.

A shared laser driver and downstream emission converters shrink motorcycle lighting hardware while preserving varied light-emission modes.

Overlapping light guide bodies let a shared outer lens create distinct turn signal and position lamp emission range while keeping the lamp unit compact.

A nanograin copper bonding layer plus a Cu2O/CuO coating blocks sulfur penetration and preserves bonding reliability in electronic packaging.

Through-hole mounting with a transmissive fixing member improves LED alignment on a light guide plate to reduce luminance unevenness.

A flexible-rigid PCB lighting assembly inside the steering wheel rim cuts weight and bulk while preserving illumination and structural strength.

A segmented door-handle lighting module directs light downward and toward the handle to maintain visibility without glare or hand blockage.

A ferromagnetic strand harvests cable energy to power LEDs, keeping flexible mining cables visible even when dust obscures reflective surfaces.

A resilient lens groove with dual engaging portions simplifies vehicle door trim light guide alignment while securing the lens and improving pocket visibility.

A Cr3+-activated phosphor with long afterglow converts laser light into near-infrared emission while reducing saturation under high-density excitation.

Wavelength-dependent output modifiers on a light guide absorb selected RGB chip light to deliver thin, uniform color lighting over large surfaces.

A cylindrical aluminum enclosure uses axial airflow and selective reinforcement to stay light, rigid, quiet, and thermally stable.

A bonded rear film stays intact during laser perforation, preventing adhesive show-through while stabilizing and evenly backlighting vehicle trim.

A prism-guided light path with Fresnel intensity control boosts HUD light extraction while limiting leakage and preserving a narrow viewing angle.

A transparent optical sensor layer and dedicated cover-plate light source enable rapid full-screen fingerprint sensing in LCDs without reducing backlight brightness.

Heavy-metal-free green quantum dots paired with red KSF phosphor achieve Rec. 2020 color gamut while ensuring RoHS compliance.

Surface-modified phosphors in a binder matrix prevent agglomeration and sedimentation, enabling stable inkjet printing for mini-LED color conversion.

A light guide device uses partial reflection surfaces with position-dependent inclination angles to direct light beams toward an observer.

Relocating light pipes to the rear circuit board eliminates component obstructions, reducing design complexity and improving collimation.

NIR filters block near-infrared wavelengths from surgical lights, preventing fluorescence imaging interference and reducing filter costs.

An input diffractive optical element cancels unevenness in image light entering a light guide plate to ensure uniform spatial distribution.

Ultrafine grooves on resin layers diffuse highly directive LED light, inhibiting hot spots and reducing iridescent unevenness in edge-lit backlight units.

A reflective member on the inner wall of a light guide hole redirects stray light, preventing leakage and reducing energy loss near apertures.

A polarization control element splits light into polarized components to direct illumination toward a reflection-type liquid crystal display.

Stacked rhomboidal slab waveguides transform optical input fields into high aspect ratio outputs using internal mirrors.

CARIBE technique uses dual gas injection to fabricate slanted structures in exotic materials.

Pre-compensated molds adjust structure offset heights to reduce edge diffraction and wavefront distortion during imprint manufacturing of optical elements.

A light guide layer sits between the electrode and semiconductor to redirect emitted photons away from absorbing contacts.

Adjustable modular light-guiding blocks match varying glass curvatures, eliminating custom strip development costs.

Microbead spacers hold the lens-lightguide gap to minimize evanescent coupling, reducing headset weight.

Movable flaps in a poultry ventilation device route air through heat exchangers or heating means, reducing energy consumption by up to 30%.

Composite particles embed fluorescent nanoparticles within translucent inorganic shells to prevent water degradation.

A backlight module uses a wedge-shaped light guide plate with a concave reflecting block to enhance light mixing.

Nano-structured fibers scatter guided light through outer surfaces to provide uniform radiation, resolving visibility limits in minimally invasive surgery.

Selective illumination of probe holders resolves the contradiction between low-light imaging visibility and efficient probe location.

Embedding components in a unitary polymer body eliminates assembly complexity while preventing sparking ignition hazards.

A surgical light head adjusts beam spread via an optical system to change illumination pattern size while varying power across light source zones.

Embedding the LED substrate in the circuit board substrate lowers manufacturing costs by eliminating expensive thermal management materials.

Volume Bragg gratings with identical horizontal periods couple colors at the same angle, reducing ghost images while expanding field of view coverage.

A self-lit display panel uses a photonic integrated circuit layer to guide and out-couple illuminating light through pixelated electrodes.

Microprism film layer on light guide plate reduces optical path and eliminates darkness near the light source side.

Oblique core portions increase the cladding layer bonding area, resolving sealing reliability issues caused by lid bonding on irregular surfaces.

Triangular pyramid prisms direct light from active sources while scattering stray illumination to eliminate unwanted pattern visibility.

A light-guiding member covers the LED element and phosphor surfaces to direct optical emission toward the external environment.