Mechanical Apparatus TRIZ Cases

See how a wireless damper control module monitors battery voltage thresholds to trigger low-pow

See how weighted set point scheduling uses occupancy prediction and user preferences to balance

See how thermal resistance estimation and predictive modeling enable model-based HVAC control t

See how dual collecting containers separate liquid refrigerant using gravity, preventing compre

See how periodic position sensing and corrective actuation maintain HVAC vent flap position wit

A transparent touch thermostat combines NFC occupancy sensing and multi-sensor HVAC control to improve interaction, security, and energy efficiency.

See how potentiometer feedback enables incremental actuators to prevent position drift and achi

Operating and environmental data feed a trained neural network to detect refrigerant leaks more accurately across different air conditioner types.

See how segmented modular units with central utility distribution enable rapid facility reconfi

Mode switching lets a vehicle HVAC system cool the battery during cabin heating while suppressing outdoor heat exchanger frosting.

See how a sectioned toroidal annulus duct with torus sectors enables straight fluid paths to re

See how regression analysis of ambient and internal temperature data enables accurate climate c

See how distributed wireless climate sensors detect occupancy and create heat maps to eliminate

UV light guided along a reflective aircraft air duct kills airborne pathogens while avoiding separate sanitization hardware and wiring.

See how variable-speed compressor and fan control optimizes dehumidifier capacity under circuit

See how integrated display and input interfaces enable direct data extraction from HVAC air mea

A water-fed condenser links cabin and battery cooling circuits to avoid parasitic air heating while maintaining battery temperature.

Divider plates create cubic foam-filled regions in a refrigerant switching unit, cutting foam use and helping prevent dew condensation.

See how continuous low-speed fan operation prevents pressure spikes in multi-stage condenser co

See how partition plates divide the collecting pipe into sub-cavities to improve gas-liquid ref

See how a multispectral filter system with four or more spectral channels distinguishes surface

See how coil temperature feedback replaces intake air sensing to maintain compressor frequency

See how differential pressure sensors monitor filter obstruction and provide timely replacement

See how variable IAQ thresholds enable demand-based mitigation device control, reducing energy

Dynamic power line carrier switching lets multi-split air conditioners communicate reliably across phases without dedicated wiring.

See how an HVAC controller uses portable power and commissioning mode to enroll wireless device

See how a self-purging air sensor with external reference sampling maintains accuracy in dusty

See how a modular sensor mount enables ventilation fans to swap sensor types without replacing

See how a remote controller acquires unit information and establishes wireless communication be

See how a capacitive voltage divider circuit enables HVAC actuators to accept 120 VAC or 230 VA

See how comparing heat pump and outdoor air cooling efficiencies in real time enables dynamic m

A router-mediated control link coordinates air conditioning and floor heating without dedicated lines, simplifying installation and enabling remote operation.

See how integrated sensors assess refrigerant regenerability locally, preventing unnecessary co

Two evaporator sensors compare upstream and downstream refrigerant temperatures to detect loss of charge and distinguish it from airflow faults.

See how baseline subcool monitoring detects HVAC refrigerant faults early, reducing false posit

Sensor readings are corrected for temperature, pressure, humidity, operating mode, and drift to improve refrigerant leak detection and sensor life.

See how segmented refrigerant recovery—first in the accumulator, then in the outdoor heat excha

See how dynamic ventilation control adjusts airflow volume based on common-space temperature to

See how electromagnetic wave emission units and mobile terminals simplify device registration i

See how pressure switches detect refrigerant leaks and activate fans to circulate air, preventi

See how a translating evaporator moves out of the air flow path during non-operational modes to

Ambient temperature and compressor status are used to stage condenser fans, cutting HVAC fan power and wear without pressure sensors.

Regenerable adsorbents and purging airflow remove CO2 and VOCs in an AHU while avoiding separate treatment units, extra cost, and complexity.

Temperature feedback triggers short water-spray pulses only when pre-cooling is needed, cutting water and energy waste in condenser air cooling.

See how a whole house fan with automated windows and environmental monitoring reduces cooling e

See how a floor-based conveying channel with side openings prevents microturbulences and blocka

Closing a mass control valve when the indoor fan stops limits refrigerant in the indoor unit and reduces leak fire risk without detectors.

An absorptive wire grid polarizer in a directional backlight unit reduces cross-talk between adjacent viewing zones while maintaining high light efficiency.

Side-emitting LEDs coupled to light guides create thin camera flash modules that eliminate objectionable point-source glare.

A bicycle handle adjusting mechanism uses independent upper and lower covers to clamp the handle.

Side-mounted supplementary light sources direct reference light toward the fingerprint module, resolving backlight interference that blocks optical paths.

Absorbers filter 550-650nm light to enhance color reproduction without cadmium health risks.

An optical waveguide with a diffuser reduces speckle noise in laser-based white light while maintaining high wall-plug efficiency.

Surface features in the peripheral region redirect ultraviolet light out of eyepiece waveguides, reducing haze and discoloration during laser singulation.

A brushless DC motor uses off-center permanent magnets and radial electromagnets to drive rotation via magnetic force.

Rotating a curved substrate during imprinting creates self-supporting waveguides, resolving flat-fabrication limits for portable displays.

Segmented transparent layers reduce exterior glow while maintaining interior illumination efficiency in vehicle roof panels.

A light guide attachment member connects to the main body via a reduced connection surface area to maintain structural integrity.

A light guide plate with a curved emission surface increases the incident angle near 90 degrees, reducing image blurring caused by small angles.

Micro-structure sets on a light guide plate guide light to the normal direction, eliminating prism sheets and reducing optical energy consumption.

A front light module reduces weight by adding a light guide element with specific refractive index to the plate, resolving service life restrictions.

A MEMS actuator uses a displacement multiplier to amplify flexure spring motion.

A light guide plate uses a connection layer with staggered mesh dots to reflect escaped light back into the structure.

A wavelength conversion member uses low molecular weight polymerizable compounds to form a cured layer with quantum dots.

Electronic switching of laser emitters creates dipped and driving beams, eliminating glare shields while maintaining optical efficiency.

Grip activation system detects user hand presence via reflected infrared light for non-contact accessory control.

An image transport layer merges display pixels with optical components using a coherent fiber bundle or Anderson localization material.

Merges optical components into one substrate to resolve complexity trade-offs, reducing material costs and assembly time.

An optical wedge folds the light path using reflective surfaces to reduce device volume while maintaining effective collimation.

Motorized toy light saber replaces hazardous spring extension with controlled electric retraction, eliminating injury risk while maintaining rapid deployment.

Segmented pawls distribute locking force across multiple teeth, preventing accidental disengagement without increasing device complexity.

A light-guiding member covers lateral surfaces of a first light-transmissive member to redirect stray photons toward the phosphor plate.

Unified control lever triggers simultaneous stopping of travel and working units, reducing collision damage risk.

Segmented rubber cushions absorb thermal expansion and vibration energy, preventing light guide plate chipping and positional shifts.

Segmenting the light guide plate into thick and thin zones maintains brightness uniformity while reducing power consumption.

A luminescent concentrator uses a spatially varying radiation converter concentration to guide light through a waveguide.

Embedded photocatalytic regions in a fluorinated monolayer oxidize fingerprints and oils under UV light, resolving visibility issues without manual cleaning.

A bicycle control device integrates shifting and braking functions using a shift operating lever that moves along distinct paths.

Outer frame locks to a transitional back plate, eliminating auxiliary jigs and reducing manufacturing cycle time.

A vehicle lighting device uses an elongated light guide and reflector to achieve uniform illumination while reducing light losses from multiple LED sources.

A tunnel lighting system directs light at a flat horizontal angle to illuminate the roadway surface while directing another beam upward to illuminate side walls.

Segmented prismatic structures and asymmetric coatings redirect light within a lightguide, reducing ghosting effects in near-eye displays.

E'tendue matching units reconcile mismatched illuminating surface areas to improve light output efficiency and color temperature balance.

A central member with a light-guide blocking structure absorbs stray image light between optical segments, eliminating ghosting from misaligned light paths.

Inter-pixel circuit placement eliminates bezels at panel connections, ensuring uniform pixel intervals and seamless image continuity across the display array.

Merges LED and light pipe structures into a single unit with shared mounting tabs, eliminating alignment issues caused by separate hardware tolerances.

A variable depth optical grating uses angled structures defined by a ribbon ion beam to shape light distribution.

Segmented light guide regions compensate for attenuation with distance, ensuring uniform illumination across vehicle instrument dials.

An intermediate layer optically couples high and low index substrates to redirect highly oblique rays.

Segmenting the actuating device from the telescopic tubes reduces assembly complexity and construction costs for varied trailer sizes.

Dual gratings on a light guide plate collimate rays perpendicular to the surface, resolving poor distribution from point sources.

A wearable air conditioner integrates a fan and temperature regulating member within a shell structure to generate directed airflow.

A light box uses an LED module and a horizontal light guiding slot to direct illumination through sidewalls.

Upward-extending phosphor layers and angled LEDs extract transmitted light, preventing absorption losses.

Round prisms on a light guide plate homogenize LED output, resolving brightness non-uniformity in transparent displays while maintaining high contrast.

Embedded light sources project illumination radially through a transparent rim, redirecting light via an angled edge to eliminate glare and reduce eye strain.