Mechanical Apparatus TRIZ Cases

Passive-first room control uses outside air and light before switching active cooling on demand, cutting energy waste while maintaining comfort.

Sound-wave signals from portable devices let room controllers detect occupancy and cut central air-conditioning energy use without extra sensors.

Automated laminar air curtains and airborne sterilization cycles cut microbial burden, then safely purge residual agents before room reuse.

Users request appliance status only when needed, reducing unnecessary mobile notifications while keeping remote control feedback available.

By comparing compressor discharge and saturated refrigerant temperatures, the ETV closes early to prevent liquid flooding and oil dilution.

Physiological data from a wearable drives appliance setting changes, helping smart homes adapt to user health and routine changes.

A rotating watering housing scatters water to support humidification, air cleaning, negative ion generation, and separate operating modes.

Flexible wiring links modular LED lighting elements to fit varied cabinet sizes and angles without rigid joints, while supporting dimming.

Variable outdoor fan speed uses suction pressure and superheat feedback to limit compressor discharge temperature while suppressing heat exchanger frosting.

A split refrigerant path lets one compressor handle cooling and reheat, improving humidity control while avoiding extra equipment.

Weather-forecast and X-Factor setpoint control extends economizer cooling in IT spaces while cutting compressor energy use without sacrificing reliability.

By modulating compressor and fan speeds from room temperature feedback, this HVAC case lowers discharge air temperature to improve dehumidification.

Separate humidification and air cleaning modes use a reservoir and guided water outlet to prevent scattering and overflow during top water supply.

Coordinated dew point, humidity, and airflow control helps hydronic HVAC systems cut energy use without causing condensation or comfort loss.

Antenna-based ion sensing in HVAC ducts enables adjustable real-time monitoring, LED feedback, and relay output to building systems.

Smaller R32 liquid and gas connection pipes cut copper use and improve workability while maintaining refrigerating cycle performance.

Extending fan run time after compressor or heater shutdown captures residual heating or cooling and avoids floating thermostat signal errors.

Starting all outdoor units together, then inhibiting them one by one, reveals indoor connections from temperature changes and cuts detection time.

A motor controller makes the blower emit a defined sound at filter end of life, improving replacement timing in high-mounted room ventilators.

A relay-separated HVAC power circuit sheds compressor load while keeping control electronics powered to protect memory, comfort, and stability.

Alternating straight and branching passages keep refrigerant from concentrating, improving tube distribution and heat exchange.

Integrated LEDs in a translucent thermostat sub-base light wire terminals before wiring, speeding installation in dark locations.

Saturating the stator magnet stabilizes actuator pulse waveforms, improving airflow door position detection and reducing HVAC diagnostic faults.

An offset rising outflow path suppresses natural convection in a latent-heat water heater, keeping restart water near the target temperature.

Time-based sensor duty cycling cuts unnecessary air quality sampling in air purifiers, extending sensor life and reducing power use.

Interchangeable shelving components and a universal base frame let retailers reconfigure product displays without multiple fixed fixtures.

Temperature-based fault tests compare outdoor and discharge air against commanded damper position to catch HVAC damper faults with fewer false alerts.

A split rectifier and storage layout isolates fault voltage during PFC short circuits, cutting capacitor withstand cost while keeping control power available.

Preformed insulating panels create an under-slab airflow layer that replaces gravel and actively vents radon from buildings.

Coordinated variable and discrete actuator control stabilizes heat exchanger temperature while reducing wear, cycling, and energy waste.

Ambient-noise sensing adjusts compressor and outdoor fan settings to keep air conditioner sound within regulatory limits at night.

An internal heat exchanger and bypass path keep the high-stage compressor running, limiting frost and avoiding heating drops during defrost.

By holding a controlled gap between indoor and set temperatures, the compressor can precool or preheat efficiently with lower power use.

Building pressure errors from stack effect and HVAC are corrected with weather profile parameters to improve indoor floor altitude estimates.

When a solenoid coil disconnects, the refrigerant circuit defaults to cooling mode so cabin air conditioning can continue in high heat.

Placing the refrigerant sensor low in the indoor unit air passage enables earlier leak detection and fan-driven gas diffusion to reduce fire risk.

Centralized temperature and pressure feedback keeps superheating stable across parallel evaporators, improving dried gas consistency.

A movable valve switches airflow between upper and front outlets so hot and cold air distribute more evenly with lower vertical temperature gradients.

Pressure equalization in partitioned evaporator and condenser chambers limits baffle stress while preserving series-flow chiller efficiency.

Temperature and time thresholds cycle HVAC stages off and on to cut energy use while maintaining reliable space conditioning.

Warm air from the outdoor heat exchanger melts frost on the fan after defrosting, while low compressor frequency supports pressure equalization.

A light-sensitive cup holder illuminates only in low light, helping users find drinks in dark seating while reducing spills and distraction.

A thermostat uses trigger-phrase voice input and command translation to enable hands-free HVAC control from the room or a remote device.

Outside air contaminant sensing lets a modular data center switch between free cooling and recirculated mechanical cooling to cut cost and protect IT hardware.

Variable-speed compressor control balances temperature and humidity errors to hold DX air within ±3% humidity and cut cycling energy.

A recessed vent body and siding-matched damper hide the wall vent in plain sight while allowing airflow only when needed.

By setting defrost intervals from indoor-unit capacity and pipe length, the controller shortens defrosting and restores heating sooner.

Slow spectral cycling in tunable retail lighting creates barely noticeable color shifts that redirect shopper attention across more products.

Pressure-driven recirculation cleans container air through a UV ozone treatment path, cutting ventilation energy use and moisture loss.