Mechanical Apparatus TRIZ Cases

Temperature-change checking detects misplaced room terminals and stops conditioning in the wrong room to avoid overcooling or overheating.

An accelerometer-guided rotatable mount lets a wall thermostat be leveled without removing the base, while maintaining electrical connection.

Controllable expansion valves and series evaporators let each compartment hold a precise temperature without electrical heaters.

A trough and perforated baffle spread low-pressure refrigerant more evenly over tube bundles, cutting submergence penalty and improving heat transfer.

Solid-state switching and power monitoring isolate HVAC wiring faults, prevent thermostat damage, and help users correct miswiring.

Occupancy-based temperature correction cuts load in empty rooms while keeping the compressor running continuously to reduce HVAC power loss.

Bypass refrigerant injection and subcooling control limit compressor discharge temperature while sustaining heating capacity in low outdoor temperatures.

A porous mesh with parallel UV lamps improves sterilization coverage near the heat exchanger without blocking airflow or wasting space.

An edge-lit panel with a semilogarithmic grid spreads refrigerator shelf light evenly while reducing bulk and heat transfer.

Indoor and outdoor air quality feedback coordinates ventilation and stand-alone purification to limit CO2 buildup, remove pollutants, and cut energy waste.

Cooler downward air and velocity-controlled secondary flow stabilize laminar cleanroom ventilation while reducing turbulence and particle entrainment.

A capillary water-absorption filter around the air duct enables natural evaporation humidification with low power, easy cleaning, and less bacterial risk.

Combining refrigerant temperature and intake pressure sensing improves closed-valve detection and prevents cooling loss from flow stoppage.

A common-bus control architecture centralizes indoor and outdoor unit logic to cut HVAC cost, simplify upgrades, and keep compressor protection active.

Condensing air moisture on site avoids costly water transport while integrated filtration, UV, and reverse osmosis deliver clean drinking water.

Pseudo-condensation temperature points guide expansion valve and compressor speed control to keep heat exchange capacity high while saving energy.

A portable terminal adds timer control to networked appliances by triggering basic protocol commands at set times, avoiding model-specific timer logic.

Wireless radio activity heats the thermostat housing, so a dynamic offset and low-pass filtering correct indoor temperature readings.

Registers and authenticates HVAC control units and user devices to keep secure control links and remote access working across multiple units.

A reed-switched LED light bar lights the cooler interior on lid opening while minimizing heat, breakage, and battery drain.

Transformer-isolated AC amplitude signaling improves air conditioner switch communication by reducing noise, offset, and half-wave power loss.

Centralized cloud control links site thermostats and Wi-Fi devices to analyze energy use, automate schedules, and scale across locations.

A split dot-matrix and fixed-icon display guides HVAC installer setup in sequence, improving usability and reducing interface complexity.

Dual feedback loops modulate the EEV from superheat and pressure signals to keep refrigerant gaseous and protect the compressor.

Sub-giga wireless links let indoor, outdoor, and control units communicate directly through building obstacles, cutting wiring cost and delay.

A spherically curved collector and centered emitter create a uniform ionization field that reduces particle adhesion and improves downstream capture.

Multi-stage magnetic floater sensing shows humidifier tank level clearly, helping users refill on time and avoid overflow.

Dynamic PFC bus voltage setpoints cut magnetic core and converter losses at light loads while preserving peak HVAC and refrigeration drive power.

Compares bypass refrigerant flow from cycle theory and fluid theory to detect leakage or charge deficiency without extensive testing.

User presence from mobile devices triggers heating or cooling only in occupied zones, cutting energy waste and speeding setpoint comfort.

Event-triggered fast BLE advertising lets a low-energy device share state changes with multiple users while preserving battery life.

Real-time comfort and indoor-outdoor temperature checks switch between ventilation and active cooling to save energy without sacrificing comfort.

A 4-way valve switches among capillaries with different diameters to balance fast cooling response, lower power use, blockage prevention, and dew control.

Dynamic flow, indoor temperature, and valve opening time are combined to measure household heating or cooling use more fairly in shared buildings.

Separate return and discharge air control prevents top freeze in refrigerated trailers while keeping cargo temperature near the set point.

A helical spiral flash tank separates CO2 vapor and liquid in compact transcritical systems while limiting sloshing and intermixing under vibration.

A controller opens a secondary expansion bypass during pressure spikes, reducing refrigerant buildup and preventing air conditioner shutdown.

Variable compressor and fan speed control prevent overcurrent trips and maintain stable, energy-efficient dehumidification.

A four-way valve routes refrigerant across three heat exchangers so one compressor can independently cool each compartment with lower energy use.

By adjusting expansion valve openings to installation height, this case limits liquid head pressure and preserves refrigerant flow in cooling and heating.

Two independent cooling cycles use a dual-path condenser and forced air circulation to cut energy waste and improve heat dissipation in tight machine compartments.

Individual injectors, sensors, and valve control balance refrigerant flow across plate interspaces to improve evaporation and protect compressor operation.

By embedding small cell radios in window AC units, operators gain power, mounting, and backhaul access with lower deployment cost.

A stepped vent, blocking rib, and upper cover keep rainwater out of the outdoor unit control box while preserving heat dissipation.

A correction value offsets indoor unit suction temperature from actual room temperature, improving setpoint accuracy despite unit placement.

Automated schedule learning updates HVAC templates from user behavior, reducing programming complexity while improving comfort and energy savings.

A separating plate disperses liquid and gas refrigerant across evaporator paths to prevent flow imbalance and improve heat exchange.

A control unit checks stored pipe connection data for closed paths, preventing correspondence errors that can disrupt air-conditioning operation.

A temperature-sensed coil and outward airflow keep the magnetic pest repeller within range, extending service life and limiting dust buildup.

A conductive shelf holder uses a cutout contact element to power integrated lighting while simplifying refrigerator shelf assembly and removal.