Mechanical Apparatus TRIZ Cases

See how interchangeable air inlet-outlet positions and UV-activated photocatalyst members enabl

See how a refrigerant sensor and controllable power switch replace parameter-comparison detecti

See how an outdoor unit control mode switches refrigerant pressure regulation between outdoor a

See how a refrigerant circuit with multiple coolant lines and switching valves cools interior a

Check valves and controllable valves balance refrigerant charge across coil circuits, improving heat pump heating and cooling without added compensators.

See how a bolt-on scrubber attaches directly to HVAC return-air inlets using regenerable adsorb

See how automated air purge and strainer-based foreign matter removal prevent contamination fai

See how a single pressure sensor with wireless circuitry detects filter blockage and notifies u

See how segmented airflow control units with independent sensors regulate air volume flows acro

See how fuzzy logic and environmental sensors enable closed-loop control of mixing valves and a

See how neural networks analyze sensor data to predict air conditioning failures, enabling proa

See how threshold-based compressor activation lowers receiver pressure during standby, preventi

By limiting compressor frequency at low input voltage, this case prevents indoor heat exchanger water blowing and dripping.

See how automated parameter monitoring detects missing check valves in multi-occupancy heating

See how built-in differential pressure measurement adjusts fan speed to reduce installation wir

See how a feedback detection circuit monitors relay contact state to ensure compressor shutdown

Multiple bypass branches reconfigure refrigerant flow so one vehicle AC circuit can handle cooling, heating, defrost, and dehumidification.

See how an intermediary heat medium circulates through indoor units during defrost to prevent w

See how variable-speed compressor control monitors saturated suction temperature to prevent eva

See how batch queuing and segmented calculation enable frequent heat consumption updates despit

See how automated floor-area and allowable-refrigerant calculation enables design-stage air con

See how temperature sensors at gas and liquid portions detect expansion valve and solenoid valv

See how dynamic compressor and fan speed control maintains S/T ratio below 0.8 to optimize mois

A primary-to-secondary HEPA airflow path returns twice-filtered air indoors, avoiding exhaust ducting while maintaining negative pressure.

See how integrated sound, air quality, and image sensors trigger ventilation fans only when mul

See how adaptive temperature setpoint adjustment uses historical occupancy data and preliminary

See how a plastic thin film replaces glass in light-emitting table tops to reduce weight, simpl

See how inline ball valves isolate service ports from refrigerant flow, preventing technician b

See how combining gas sensors with user sensory feedback enables objective comfort evaluation f

A modular control interface simplifies EC motor setup, automatic programming, replacement, and parameter reporting in heat exchanger fans.

See how gradient-based constraint modification optimizes ventilation rates and temperature setp

See how exhaust temperature and pressure sensing replace expensive cryogenic sensors to detect

See how isolation valves and sensors automatically pump down A2L refrigerant below M1 charge le

See how a ferromagnetic stirrer heated by external magnetic induction replaces heat exchangers

See how segmented transition panels bridge furnace-to-coil dimensional mismatches, reduce stati

See how coordinated control of evaporation temperature, air flow, and water flow prevents conde

Cyclic vane angle groups drive ceiling-to-floor air mixing, cutting temperature equalization time while keeping airflow more uniform.

See how an inductive sensor with variable-inductance target portions enables HVAC actuator posi

See how a shared duct with damper control and two evaporators cools three chambers, reducing co

See how pressure-sensing triggers adsorption, washing, or brush cleaning to maintain air intake

See how a smart gateway creates virtual devices to enable BMS networks to control third-party H

See how a mobile air purifier detects and follows humans to purify air on demand, reducing the

Pre-cooling and model-based HVAC duty cycling cut peak-hour energy use and costs while maintaining indoor comfort and reducing grid demand.

See how voltage drop control reduces pump flow velocity in heat medium circuits, preventing ero

See how an HVAC controller enforces minimum deadband between heat and cool set points through a

A temperature-based control algorithm limits transient over-flow in HVAC terminal units to match available power and reduce valve wear.

See how a reversing valve routes refrigerant to a reheat coil during startup to prevent high-pr

See how a transparent sub-door inside the main refrigerator door allows content viewing without

See how distributed wireless climate sensors detect occupancy and movement to direct airflow dy