Mechanical Apparatus TRIZ Cases

Hot-gas zoning across upper and lower outdoor heat exchanger sections clears central frost while maintaining indoor heating during defrost.

Periodic diffusion cycles and feedback control keep room liquid concentration in range, reduce scent fatigue, and extend cartridge life.

Fault and filter alerts are moved to the top of the remote menu, helping users find service details fast without searching.

Controllable expansion valves in series let each refrigeration compartment hold a precise temperature range with lower energy use and no electric heating.

A snap-mounted shelf label LED strip lamp uses light-transmitting edges to direct light onto product display faces for clearer retail visibility.

Controlling refrigerant quality at the liquid extension pipe outlet improves density calculation and leak detection in long refrigeration lines.

Indirectly estimates HVAC power use from temperature and humidity data, helping predict energy demand without installing power meters.

Detachable duct and diffuser modules vary AC discharge speed and direction, improving user control while avoiding a complex outlet structure.

A compact clean room ventilation unit combines fan speed control with outside and exhaust air regulation to simplify installation and maintain pressure.

A spiral swirl surface and widened inlet geometry cut pressure loss, avoid flow interference, and keep dust separation compact and effective.

Randomized preamble timing lets indoor and outdoor units avoid RS-485 line collisions and cut polling delays in multi-type air conditioning.

Backspin-generated compressor voltage is diverted into the condenser motor load, limiting electrical damage without chopper resistors.

An LED PCB and gravity switch replace hot, noisy lamp switching to light the refrigerator interior only when the door opens.

A single four-way valve and dual indoor heat exchangers enable heat recovery dehumidification without temperature drop, reducing control complexity.

Dewpoint and dry-bulb measurements distinguish wet-coil and dry-coil loads, enabling economizer changeover with lower cooling energy waste.

Interchangeable septum openings let clean rooms switch between pilot and large-scale production while preserving airtight seals and contamination control.

A terminal stores many HVAC schedule patterns and sends only selected ones to the central controller, preserving storage and keeping operation running.

A network of UAV docking stations adds recharging, refueling, and package transfer stops to extend delivery range without sacrificing payload.

A mechanical flow valve holds condenser refrigerant level stable without sensors or complex controllers, improving chiller reliability and cost.

Electric motors and geared rings let users remotely adjust vent airflow direction and louver opening, avoiding manual access in hard-to-reach locations.

A second expansion device creates medium-pressure two-phase refrigerant before long extension piping, cutting total refrigerant charge and leak impact.

Optical transceivers built into LED fixtures replace wiring with IR and broadband light links for reliable smart building control.

Gravity-actuated pivot panels keep underground vents open for airflow, then quickly seal shaft openings to block storm water ingress.

A porous water-retaining member, leak container, and shutoff valve recover mist and stop fan coil humidifier leaks.

An offset IR lens steers sensing toward users in front of the thermostat, enabling faster wake-up with less lateral motion sensitivity.

Sequential outdoor-unit defrosting removes frost more completely while maintaining indoor heating and reducing efficiency loss.

A heat storage tank, compressor loop, and rotary heat transfer device recover exhaust-air heat and keep ventilation effective below 0°C.

A boxed outdoor heat-exchange unit redirects discharge air and moves noisy components indoors to cut facade impact and noise.

Multiple spaced UV lamps on a porous body improve air-channel coverage, sterilization uniformity, and space use in air conditioners.

Image-based plant recognition activates air purification only when blooming allergen plants are detected, improving air quality while limiting energy use.

Natural cellar temperature and humidity are copied into an artificial cellar to improve storage and aging conditions for wine and other goods.

Angled baffles and fire-resistant mesh block ember and flame ingress while preserving the airflow needed for roof ventilation.

A motor-driven brush sweeps the air conditioner filter net into a dust box, avoiding frequent disassembly, labor, and cleaning noise.

A tubular LED light bar simplifies refrigeration display lighting with integrated optics and housing for easier assembly, lower cost, and efficient illumination.

Pre-defrost after extreme cold clears frost from the outdoor heat exchanger, allowing heating to resume with stable output and less user confusion.

A spherical collector with a centered emitter creates a more uniform ionization field, charging more particles for efficient air separation.

A control circuit coordinates outdoor and indoor units to set supply air temperature by room load, cutting redundant heating and cooling.

Switchable two-stage and cascade compression extends marine refrigeration to −80°C while hot fluorine defrosting cuts power use and clears frost.

Built-in flow metering, energy calculation, and remote monitoring simplify HVAC valve installation while improving energy tracking.

A brush-and-rack cleaning assembly sweeps air-conditioner filter dust into a dust box, improving cleaning speed, completeness, and noise control.

A parallel subcooler circuit shares the exhaust fan with the main condenser to maintain cooling performance in hot ambient conditions.

Zone demand signals let a supervisory HVAC controller identify comfort states, focus on critical zones, and avoid complex retrofits.

Location-based eco-mode lets a thermostat auto-adjust HVAC settings from occupancy, weather, and user location to cut energy use.

Startup control lowers compressor discharge temperature and pressure based on separator liquid level to prevent refrigerant disproportionation.

Parallel heat exchangers and valve switching let a VRF indoor unit control humidity and temperature without long refrigerant paths.

Single-level configuration and checkout menus simplify HVAC zone panel setup while preserving flexible zone control and operation.

Cooling is adjusted from component thermal headroom, changing fan speed or ambient targets to avoid overcooling and cut energy waste.

Fewer physical keys are assigned common switching functions, letting heat pump controls work with gloves while staying compact.

Lowering adsorbent filling ratio to 70% or less improves heat transfer and adsorption capacity in adsorption refrigerator adsorbers.