Air-Treating Devices TRIZ Cases

A raised muffler with its inlet above its outlet suppresses coolant pulsation while draining liquid to the condenser instead of back to the compressor.

Combining an undersized emissions-compliant main power source with secondary power lets a transport refrigeration system reach full cooling capacity.

A shared connector-cooling structure removes PCB control heat in vehicle auxiliary heaters without adding separate cooling hardware.

A sealed PTC heater uses conductive silicone and waterproof glue to improve EV defrosting efficiency, safety, and battery range.

An engine-driven generator powers a variable-speed compressor so in-transit refrigeration can run independently with lower energy use.

Multiple independently operated heating units let one vehicle heater deliver high output while maintaining precise low-heat control and adaptability.

Side-by-side cylindrical heating modules cut space use, head loss, and heating inertia for faster passenger-compartment heating.

Piezoelectric droplet generation inside a compact blower layout cools cabin air closer to passengers while saving installation space.

Coolant temperature is used to decide compressor startup, preventing negative suction pressure without adding a suction-side pressure sensor.

Two downstream temperature sensors replace costly humidity sensing to predict vehicle AC evaporator odor timing and improve sterilization control.

A battery-generator power split keeps cargo cooling stable while cutting diesel runtime, fuel use, noise, and emissions during low demand.

Front-seat control signals and a rear lock button let the driver manage rear AC settings and prevent passenger mal-operation without stopping.

An inverted valve core and protective cap keep brazing and threading debris off sealing surfaces, reducing leakage in AC charge valves.

A dehumidification line feeds refrigerant to the evaporator before the exterior heat exchanger, improving cabin drying while limiting frost.

An evacuable oil separator cleans refrigerant samples before gas analysis, reducing oil-driven faults and unstable readings in vehicle A/C service.

A toroidal motor and nested cylindrical heater focus airflow for rapid windshield defrost while keeping the dashboard blower compact.

A hybrid engine-generator-battery layout cuts idle fuel use in transport refrigeration while maintaining compressor and fan power.

Drain passages built into a partitioned heat exchanger core prevent air leakage between sections while clearing condensate to avoid buildup and freezing.

Recycled cryogen exhaust drives onboard power generation for reefer cooling, avoiding diesel refueling, noise, and emissions.

An overmolded seal on connector conductive tracks isolates the heater control PCB from dust, moisture, and heat inside the casing.

Printing barium titanate PTC resistors onto a substrate removes pellet and frame assembly, cutting heater rod cost and complexity.

A two-stage ceiling and sidewall chute layout keeps cooled air moving rearward while reducing loading damage, install time, and light blockage.

Switching valves route adsorption and condensation heat into the cabin loop, improving vehicle heating efficiency with simple mode changes.

Porous silica aerogel in the heater layer blocks heat flow into the cushion, improving seat heating efficiency and warm-up uniformity.

Temperature feedback keeps defrost active until the return air grid is ice-free, preventing airflow blockage and cargo repacking.

Separated duct flow paths and indoor heat exchangers recover thermal energy from discharged cabin air while maintaining vehicle ventilation.

A fan-driven pressure difference between desorber and condenser improves automotive absorption cooling while reducing system size and cost.

Coupled refrigerant and temperature-control circuits let EV and hybrid batteries, components, and the cabin be heated and cooled independently.

A multi-mode truck cab heat pump adds auxiliary heating to cut battery demand and reduce engine idling during parked heating and cooling.

Switching refrigerant flow to bypass the receiver tank cuts pressure loss, preserves heat exchange, and improves heat pump defrosting.

A dual-condenser refrigerant loop enables vehicle heating and cooling even when engine cooling water is unavailable, improving cabin comfort.

Coolant flow is reduced when its temperature falls below refrigerant temperature, limiting unwanted heat exchange and improving hybrid vehicle cabin heating.

A limited compressor speed mode delays return to normal operation, suppressing hunting oscillation and low-temperature noise in heat pumps.

An 8-pass header-and-baffle layout spreads refrigerant evenly across the evaporator to cut temperature variation and improve cabin air uniformity.

A solenoid bypass flap recirculates chilled air when bay doors open, preventing evaporator freezing and keeping food carts cold.

Temperature-dependent pressure thresholds let a heat pump detect refrigerant shortage accurately and protect compressor durability without losing low-temperature heating.

A tube-shaped collector and centered emitter create a uniform ionization field, improving particle capture by the cabin air filter.

An alternating magnetic field heats fluid through an inductor while turbulent flow boosts heat transfer and removes electrical isolation needs.

A temperature-threshold PID loop adjusts compressor speed only when evaporator changes are significant, reducing unnecessary power use.

A two-lever air vent linkage keeps front and rear vanes moving with the control direction, reducing driver distraction and easing adjustment.

Periodic ECU shutdown in non-running transport refrigeration modes cuts battery current draw while preserving engine checks and extending battery life.

Separate coolant and refrigerant circuits with CHCM valve control maintain cabin and engine heating while avoiding heat exchanger icing.

Multiple sealed heating elements guide fluid along both sides to boost heat transfer while improving high-voltage safety in vehicle heaters.

Stored coolant pressure keeps the four-way valve switching after compressor stop, preventing mid-position stagnation in vehicular heating and cooling.

Closed-loop stage control matches refrigeration load to available engine power, preventing stall while using capacity more effectively.

Predictive heating control limits outdoor heat exchanger frosting while auxiliary heating maintains required cabin heat with low power impact.

Heat-shrink plastic closures seal heater casing ends around electrical contacts, cutting assembly complexity while maintaining fluid-tightness.

An injection-molded one-piece frame holds PTC heating elements directly, cutting part count, assembly time, and cost in vehicle auxiliary heaters.

During engine restart, the electric compressor runs briefly before the engine-driven unit to recover oil, protect lubrication, and sustain cooling.

Specific door support spacing around a groove lacking section prevents sliding-door rattle while preserving air conditioner case layout flexibility.

A modular pod stays attached across land and air vehicles while sharing power and cabin utilities to keep travelers comfortable and productive.

Body-panel heat exchangers use internal channels and aerodynamic shaping to reject heat while minimizing drag, energy use, and range loss.

Waste heat or warmed air conditions supersaturated fuel-cell exhaust before discharge, preventing visible plume and driver confusion in cold transport refrigeration.

Replaceable fuel cell and refrigeration modules cut repair time and downtime in transport cooling, helping protect perishable goods.

Variable pump speed, sensors, and a flow valve balance coolant heat between the cargo compartment and engine despite changing engine speed.

A diagonally mounted blower motor with upper-side removal eases engine-bay servicing while reducing noise, water ingress, and airflow resistance.

Temperature-dependent inductance lets the heater detect overheating from current change, enabling fast shutdown and longer service life.

Routing engine exhaust through an integrated front-wall channel heats the dump body, prevents material freezing, and avoids added structural weight.

Filtered air is routed through the vehicle roll cage to helmet wearables, reducing dust inhalation while keeping the passenger compartment open.

Stored battery waste heat in phase change material supports EV defrosting without reverse-cycle energy loss while keeping battery temperature stable.

A 12V/48V architecture uses a DC/DC converter and capacitor to support large vehicle loads, limit voltage fluctuation, and reduce wiring loss.

A clip-and-tooth pre-assembly lets molded plastic parts cool together, limiting shrinkage distortion and improving final alignment.

Battery waste heat is routed through a bypassed heat circuit to defrost a frosted radiator while maintaining cooling with lower heat energy use.

Adjacent condenser and radiator airflow helps a fuel-cell-powered trailer refrigeration unit reject waste heat in high ambient conditions.

Pulse width modulation lets a two-position three-way solenoid valve replace costly modulating valves for precise vehicle cabin coolant temperature control.

A PWM two-position three-way solenoid valve splits coolant between cooling and bypass legs to cut valve cost while maintaining cabin temperature control.

Customized in-cabin aromas replace audio and visual vehicle alerts, improving event notification for visually-impaired and hard-of-hearing occupants.

Pivoting vanes, a rotating barrel, and a knob-operated door improve cabin airflow direction and control without a complex register layout.

An auxiliary switching door and blower eject debris trapped at the bottom of a vehicle HVAC filter, reducing manual discharge work.

A λ/4 resonator built into a vehicle ventilating tube cuts fan noise while avoiding the added material and assembly cost of covered chambers.

Sensors and diverters route cabin intake air through only needed filters, cutting flow resistance and energy use while maintaining air quality.

Real-time filter data and air property sensing adjust fresh and recirculated airflow to maintain cabin air quality with lower energy use.

Sensors detect contaminated cabin sections, then isolate and signal only those zones so the autonomous vehicle can stay in service.

A one-piece plastic block and screw-fixed metal locking plate create direct pipe continuity and secure retention without extra connection parts.

Separating hot and cold refrigerant channels at opposite manifold ends suppresses heat exchange, cuts thermal stress, and improves efficiency.

Thermal-load control switches engine-driven and electric compressors to keep cabin temperature stable while reducing fuel use.

Pattern recognition on temperature, humidity, and pressure signals infers door status, load level, and cargo type in real time.

A flexible film flap and independently heated outlets improve multi-outlet air distribution while reducing parts and assembly steps.

Radially deflected airflow hits adsorption structures that capture droplets and aerosols, cutting viral load without HEPA pressure loss.