Mechanical Apparatus TRIZ Cases

See how integrated temperature-deviation error values enable efficient heating-cooling mode swi

See how an IAQ sensor uses occupancy-based interval switching to extend battery life while main

See how a single-motor vane module with orthogonal horizontal and vertical vanes enables precis

See how a heat absorption film on the outdoor heat exchanger converts solar energy into auxilia

See how controlled glass composition and reducing melting conditions enable molybdenum-electrod

See how laser-based UV devices generate narrow collimated beams that skim below ceilings for sa

See how a thermostat organizes settings by occupancy and scenario attributes rather than time-b

See how automated washing cycles remove hypochlorous acid deposits from electrolytic baths and

See how continuous blower operation and selective compressor control maintain cooling during re

See how return-duct sterilization with UV and electronic filters adjusts filtration intensity b

See how controller-managed set temperature differences prevent frequent air-conditioner start-s

See how asymmetric fin bodies with inclined angles prevent water accumulation between refrigera

See how an immersion tube with enlarged conduit cross-section decelerates suction air flow to r

See how sensor-based self-diagnosis distinguishes actuator from valve faults in hard-to-reach H

See how measuring bypass valve pressure difference and deriving mass flow rate prevents receive

See how a gear-driven guide member enables an air cleaner's flow adjusting device to rotate fro

See how dynamic nominal flow calculation replaces fixed setpoints to maintain consistent contro

See how modulating compressed refrigerant flow through a suction heat exchanger maintains optim

See how model predictive control integrates occupancy and particle sensors to cut cleanroom HVA

See how sensor-based refrigerant leak detection identifies leak location and severity, then tra

See how a two-way and three-way clip system replaces screws to fix base heaters in air conditio

See how intake and exhaust temperature sensors enable periodic compressor control to reduce ene

See how AI-driven sensors and cloud computing enable instant air quality adjustment to maintain

See how integrating water-cooled condenser, receiver dryer, and heat exchangers into a single m

See how embedded consumable identifiers and self-service tracking reduce manual handling errors

See how a foamed resin cover member protects aluminum refrigerant pipes from condensate water c

See how flow-dependent model parameters enable accurate thermal power control in HVAC systems w

See how a single photoelectric switch detects air valve open and closed states using voltage si

See how clip-attached discharge grills and detachable fan shafts enable cross-flow fan removal

See how a segmented flow element with expanding sheath enables throttle adjustment after wall i

See how a modular housing integrates sensors and servicing devices to monitor and adjust air qu

See how a 25-27% HFO-1132(E) and 73-75% R32 refrigerant blend achieves GWP ≤500 while maintaini

See how dual heat exchangers with segmented refrigerant flow enable continuous dehumidification

See how auxiliary outdoor heat exchangers with flow-rate valve control maintain refrigerant sup

See how localized air circulation with environmental sensors reduces toxic gas buildup in poult

See how wireless dampers with variable positioning and mesh networking enable precise zone airf

See how multiple parallel flow channels and negative-pressure air routing improve cooling relia

See how a piping cover with integrated inspection port enables leak detection at inaccessible r

See how an XML gateway translates control information between proprietary and general-purpose p

See how an HVAC system detects low-GWP refrigerant leaks during idle mode by monitoring suction

See how dynamic valve control continuously adjusts gas flow rate during pump-down and pump-up t

See how a dual-mode air conditioner uses separable indoor and outdoor units with compression ri

See how a removable network adapter design enables a single gateway to integrate diverse buildi

See how predictive control schedules estimate temperature and humidity time variations to maint

See how flexible non-flammable members at electrical box joints prevent fire spread in air cond

See how dynamic fan speed adjustment based on evaporator tube and indoor temperatures prevents

See how an elastomeric membrane on a dip tube anti-siphon orifice blocks cold water during draw

See how segmented flash tanks with balanced headers reduce individual tank pressure in transcri

See how dedicated heating and cooling fluid loops eliminate glycol in heating circuits, improvi

A separable swing strut lets fire dampers be tested and reset through small duct openings, with tactile confirmation when reconnected.

A secondary reflective booster optic redistributes narrow-angle LED light to fill dark zones and create more uniform refrigerated case illumination.

A microprocessor-based HVAC gauge converts refrigerant pressure to saturated vapor temperature in real time, avoiding lookup charts and service errors.

Waste exhaust heat superheats refrigerant gas in a vehicle A/C loop, cutting compressor work, fuel use, and engine rpm drop.

A multi-orifice return structure meters refrigerant from the evaporator to stop valve hunting, stabilize superheat, and hold dew point.

Gravity-based liquid-vapor separation and superheating prevent refrigerant maldistribution and compressor liquid slugging.

Staged blower and cooling capacity matches active zone demand, reducing pressure and energy waste in multi-zone climate control.

Bridge units, blocking filters, and spread-spectrum signaling isolate indoor-unit groups to prevent leakage and stabilize air-conditioner control.

A single microchannel unit filters foreign matter and decompresses refrigerant at once, cutting circuit assembly complexity, cost, and noise.

A removable birthing bed foot section uses self-locking support and guided stowage to improve perineal access while reducing clutter.

A follower mechanism synchronizes tilt and input-shaft motion to avoid gear backlash and simplify precise angular control in machine tools.

Staged moisture-release layers cut dehumidification heat demand while improving waterdrop collection and preventing backflow.

Compressor inlet and outlet pressure feedback adjusts the throttle setpoint to cut energy use and prevent liquid refrigerant damage.

Separate refrigerating control keeps mixed-beverage fluids at different temperatures, preventing freeze-up while enabling chilled dispensing.

Throttling and one-way valve switching improve compressor suction superheat in heat recovery VRF heating without hot gas bypass.

A monitored shaft shutter closes only when ventilation is unnecessary, cutting building heat loss while maintaining lift safety compliance.

A portable wireless HVAC remote senses occupant-felt conditions and controls multiple zones without requiring users to visit each wall thermostat.

A nested fan, grille, and lamp housing layout improves fixture cooling, trims bulk, and enables occupancy-based lighting levels.

Real-time refrigerant temperature and slope feedback adjust the ice maker valve to improve ice production and energy use in fresh food cooling.

A weighted rotating sensor keeps the inlet, chamber, and outlet aligned with gravity, maintaining accurate air pollution sensing in any air cleaner position.

Bulkheads and barometric flaps segment a high-rise stairwell to keep pressure uniform, doors operable, and escape routes smoke-free.

Using the communication line for both power and control, this actuator cuts HVAC wiring complexity with energy storage and power management.

Motor load current is used to detect air circuit blockages or ruptures and estimate obstruction severity without distributed airflow sensors.

Branch and main exhaust lines route hot air from fan-less rack chassis to a remote pump, cutting noise, fan count, and internal space use.

Subnet controllers and bus interfaces let HVAC components share status and demand data for tighter temperature and humidity control.

A UV insert with an air mover turns a static ceiling light fixture into a circulating germicidal chamber for broader airborne microbe eradication.

A touch GUI adds many incremental airflow settings, giving HVAC users finer comfort control with less noise and clearer system feedback.

Localized modular cooling uses variable-speed fans and a bypass valve to cut hot-cold air mixing, energy use, and piping complexity.

Bypassing the intercooler after defrost keeps supercritical CO2 refrigerant hotter, cutting heat loss while preserving outdoor heat exchanger defrosting.

Occupancy, temperature, and location feedback let a networked load switch control plug-in heaters and air conditioners with lower energy waste.

Diffusing microparticles in a transparent bowl spread backlighting evenly, cut glare, and hide plumbing in an illuminated washing counter.

Maximum liquid and air flow data are used to estimate air handling unit time constants automatically, avoiding costly bump tests.

Sequential ozone, UV, aerosol growth, electrostatic capture, and catalytic ozone breakdown clean gases, microbes, and particles with low energy.

By changing expansion settings and tracking sensor responses, this case identifies correct HVAC wiring without rewiring or channel mix-ups.

A mobile HVAC control interface adapts to user actions, time, and geo-location to surface the most relevant building controls remotely.

A hooded distributor spreads refrigerant as a film over horizontal tubes, improving vapor separation and heat transfer in HVAC evaporators.

Adjusting a supercooling control valve by indoor load prevents refrigerant flash, cuts flow noise, and stabilizes cooling across units.

Classifying anomalies by category and severity cuts redundant remote alerts while keeping urgent equipment faults visible.

Self-contained rack cooling isolates hot and cold air, cuts energy waste from mixing, and removes overhead piping leak risk.

Individually switched air modules balance UV exposure, airflow demand, energy use, and lamp life in retrofit air conditioning ducts.

Automatic thermostat control, fan-only cooling assist, and overheat cutoffs make in-line duct supplemental heating safer and easier to use.

A light-transmissive edge collar lights a counter border while hiding the source, preserving countertop durability, appearance, and service access.

A rotatable ring with press-to-select menus replaces complex thermostat controls, making programming easier while supporting energy savings.

A backup copy in the auxiliary controller restores model-specific HVAC data after main controller replacement, avoiding errors and manual startup steps.

A variable-length support link and multi-path slot lift the bed smoothly while keeping caster assemblies fixed during elevation and tilt.

Integrating LEDs into the evaporator module cuts refrigerator lighting parts, simplifies assembly, and avoids failure-prone hinged lamps.

A bypass around the supercool heat exchange portion lowers heating-mode pressure loss and compressor power while preserving cooling COP.

Recover exhaust-air heating and cooling energy with a refrigerant heat pump that supports high outside-air ventilation and humidity control.

By comparing actual climate values with finite-state transition estimates, this case detects AHU sensor and damper faults more accurately.

Angled LED groups in an elongated housing widen light spread, cut hot spots, and simplify thermal and electrical fixture design.

Dividing the outdoor control unit into functional blocks on separate substrates simplifies wiring, cuts noise, and eases control changes.

Users set a personalized sleep temperature curve by time, letting the air conditioner adapt overnight comfort without complex operation.

Interchangeable ventilator plates and a clamped dome improve airflow through vehicle covers to reduce condensation and moisture damage.

Latent exhaust heat preheats cold and heating water in a dual-pipe boiler exchanger, removing the separate indirect heat exchanger.

Adjacent indoor units generate airflow barriers that keep conditioned air in the target zone, reducing waste in large open spaces.

Infrared occupancy detection switches rooms between energy-saving and rapid conditioning modes to cut waste without delaying comfort.

Integrated sensors, LED control, and signal transmission turn standard fixtures into occupancy-based lighting and HVAC controls.

A restricted ozone zone inactivates airborne microbes and odors, then decays before discharge to keep exhaust air physiologically safe.

Redundant filtration units with stored power deliver clean outside air to reactor habitability areas without complex ductwork or pressurized tanks.

A removable conductive connector keeps switch contact reliable while letting air conditioner switches be replaced without changing the full circuit board.

A four-stage air cleaning process filters contaminants, oxidizes ethylene, and converts residual ozone to oxygen to extend produce shelf life.

Mass and energy balance calculations avoid error-prone outlet humidity sensing and improve dehumidifier water removal measurement.

Integrated building design software automates result interpretation, model merging, and global nonparametric edits to improve productivity and reduce user error.

Pre-cooling refrigerant with an internal heat exchanger keeps expansion near the saturation line while avoiding critical-point cavitation.

Real-time urban pollution trend estimation helps time building ventilation to cut indoor exposure without dense monitoring stations.

Separate recirculation ducts and a mixing valve cool closed data center air while limiting leakage, fire-safety burden, and energy use.

A floating ball between aligned seats lets one solenoid switch water flow precisely with less wear and lower mechanical complexity.

By sensing flow changes before temperature shifts, this control approach cuts boiler cycling, reduces wear, and avoids exhaust condensation.

A level sensor and valve balance refrigerant distribution in a flooded evaporator, improving heat transfer without complex mechanical control.

Flow regulators balance refrigerant across parallel channels to limit pressure drop and maintain even heat-exchanger temperature.

Pre-cooling and pre-heating zones before peak billing periods cuts HVAC electricity use while keeping temperatures within range.

A shuttle and sub-shuttle mechanism adjusts chair tilt bias while reclined, preventing damage and preserving user force-setting flexibility.

A bypass line with a shutoff valve and fixed orifice lets a smaller expansion valve meter low flow precisely while handling peak refrigerant demand.

Preassembled HVAC zone-control units use handles, sealed pipe caps, and pressure gauges to prevent damage, speed installation, and verify leak-free coils.

A needle-fin pre-filter wall and modular fine filter cut pressure loss while adding heat transfer and easier service in compact rooftop air terminals.

A perforated tube and bi-flow expansion device spread two-phase refrigerant evenly in a microchannel heat pump header while preserving reverse-flow heating.

Monitors compressor on/off timing and shifts the on-temperature threshold to stabilize cycling, reduce outlet swings, and prevent evaporator freezing.

A shuttle, sub-shuttle, and spring layout lets chair tilt force be adjusted while reclined without damaging the preference mechanism.

An integrated pressure-reducing and distribution module cuts CO2 circuit connections, lowering leak risk while balancing flow to dual evaporators.

Instant cellular messaging replaces dial-up remote control, enabling private two-way thermostat monitoring and building control worldwide.

Adjustable intermediate pressure in the intense cooling stage improves CO2 refrigerating efficiency while preserving low-temperature capacity.

Protected cap and coupler recesses shield fragile resistor leads in a sacrificial anode assembly, easing manufacture and reducing tank corrosion risk.

Integrated handle sensors log window position, temperature, and humidity to prompt timely ventilation and document improper airing.

By routing outdoor air from the heat-medium inlet side, the exchanger preheats the adsorbent and prevents dew freezing during winter regeneration.

A single Bowden cable and coupling device create balanced lumbar support forces on both sides while reducing parts, wire bending, and assembly complexity.

Airflow-driven opening replaces electrical control in a wall sleeve damper, cutting pressure loss, wiring, and assembly complexity.

Sensor-driven EEPR valve modulation controls superheat during defrost to keep liquid refrigerant out of the compressor and limit coil icing.

Correlating vent tiles with rack influence enables weighted airflow control that cuts recirculation and cooling energy waste in data centers.

A microcontroller links filter and system RFID data to track filter life and settings despite metal interference and short communication range.

Covered cold aisles and bottom-fed airflow help data center racks avoid hot-cold air mixing, cutting cooling power while stabilizing rack temperature.

A rotatable display and keypad module makes HVAC cabinet settings, error codes, and troubleshooting easier to access in hard-to-reach installations.

An intermediate lock position limits tabletop pivot to a few degrees before full release, helping keep objects stable during stowage.

A thermostat receiver and display let utilities send pricing and conservation messages, helping users shift HVAC settings during peak demand.

Using the vehicle's NBC protection system, this case maintains filtered overpressure for safe contaminated probe handling with less space and energy use.

Adaptive flow temperature control uses outdoor and room sensing to improve heat pump comfort and efficiency while avoiding overheated floors.

Encoded HVAC relay and status data in indexed containers lets thermostats share usable network information across different smart energy systems.

Differential pressure sensing trims or stops compressor capacity before pressure gaps disrupt refrigerant switching in humidity control.

A partitioned secondary bundle recovers condensing heat from two primary bundles, boosting boiler efficiency across a wide power range.

Single-phase liquid refrigerant and variable expansion valves balance flow across user circuits despite height and piping differences.

A time-based safety period and pattern recognition help a thermostat avoid false nonoccupancy at night, balancing comfort and energy use.

Variable fan speed and outdoor air damper control cut rooftop HVAC energy use while maintaining indoor CO2 levels and comfort.

Water-fed drum ribs counterbalance unbalanced spin loads and improve laundry showering without adding drum space or complex controls.

Pressure sensing inside and outside a sealed rack aisle adjusts cooling airflow so air passes through racks with lower energy use.

Mode-based single-level screens simplify HVAC zone setup, thermostat signal interpretation, and checkout without complex menu hierarchies.

A hermetic electric field filter combines the frame and grid base to cut power on removal, reduce air leakage, and prevent shock.

A shared mixing device and metering valves regulate floor and ceiling temperatures together while avoiding condensation and extreme surface temperatures.

An elastic baffle inside the roof window air channel stabilizes airflow in wind and rain while preventing full closure and water mist ingress.

Zone-specific timers delay HVAC up-staging to match real demand, reducing cycling, temperature drift, noise, and equipment wear.

Signal sensing lets an HVAC controller identify system type, auto-configure operation, and detect wiring faults during installation.

Automatic indoor unit data transfer lets the outdoor unit judge refrigerant charge more accurately while avoiding manual setup errors.

A dual-source cooling line network keeps data center heat exchangers operating during fluid-source failures, reducing shutdown risk.

Variable-speed matching between auxiliary and outdoor fans cuts power use while maintaining airflow and stable refrigerating cycle conditions.

A single-compressor aircraft heat pump routes refrigerant across heating and cooling zones to cut unit weight, power use, and resistance heating.

A test mode verifies whether the sensor shares the purifier's air space, enabling accurate control and lower energy use.

Dynamic luminance and color changes on the home screen make air conditioner input clearer while lowering display power use.

Obliquely colliding uniform airflows form a local clean zone without enclosures, improving operability in narrow spaces and around obstructions.

Internal header orifices and a switchable flow valve improve refrigerant distribution uniformity, cut pressure drop, and support heating and cooling.

Heating part of the liquid refrigerant to create thermal choking improves flow control, cooling response, and compressor protection.

A porous-frame array of compact UV lamps improves irradiation uniformity, saves space, and lowers power use in air sterilization modules.

Sensor-driven valve control directs refrigerant to keep a special food compartment near 0°C under varying ambient conditions while cutting energy use.

A modular HVAC controller uses learning, variable-speed control, and load balancing to cut compressor cycling and energy use.

Stored cold-water temperature limits valve travel to cut oscillation, wear, and response delays in hot water mixing.

Valve fault monitoring freezes supply and common exhaust flow changes to keep fume hood room pressure stable and prevent unsafe sash operation.

An electronic controller matches PV surplus to indoor heat pump units, cutting grid use and improving air conditioning and hot water energy use.

A controller identifies which tandem compressor causes over-pressure or overheating, isolating it while keeping healthy compressors running.

Detects capacity-degraded heat source machines and lowers their priority to reduce repeated staging and keep supply temperature stable.

Reflected-light frost detection lets evaporator and drain-pan heaters run separately, reducing unnecessary defrosting, power use, and warming.

A laminated substrate links vertical electronic terminals to upper and lower wirings to prevent conical conductive joints from losing contact.