Damper Arrangement TRIZ Cases

See how a check valve built into the burner duct prevents exhaust gas backflow and enables prop

See how an asymmetric tilted housing eliminates custom bases for sloping roofs while curved bla

See how a vent proving system uses temperature sensing and damper control to detect and prevent

See how a linear slide damper replaces rotary designs to reduce mounting height, eliminate flow

A sensor and controller detect reverse vent flow in gas-fired appliances and shut the burner down before combustion products spill indoors.

Pressurized gas in a surrounding seal space helps a metal damper isolate process sections under high heat and heavy dust loading.

A pivoted flap leaf slides along the sealing face to scrape off tar deposits, keeping exhaust-gas shut-off valves tight and easy to open.

Uneven primary air distribution in an oval radiant tube burner suppresses NOx while preserving heat transfer and a compact structure.

A heat-resistant flexible flue damper uses pressure-driven opening and closing to block backflow, cut noise, and avoid motors or sensors.

An oval radiant tube burner uses staged air injection and adjusted primary-air flow to reduce NOx without fans or catalysts.

The combustion floor opens to reach the air box, avoiding extra maintenance hatches while preserving combustion air control.

Segmenting the float guide from the valve body eliminates narrow gaps that trap contaminants, allowing easy cleaning while maintaining flow cross-section.

Built-in bullet-shaped float valve and door mechanism prevent hazardous backdraft in fuel burning devices without after-market installation errors.

A reverse flow prevention apparatus integrates with combustion exhaust ports using a pressure-driven opening and closing mechanism.

A chimney blocking apparatus uses a telescopic support and resilient actuation to deploy a flexible membrane against the flue.

Variable iris port and laminar insert resolve limited turndown ratio by sustaining flame stability without shutdowns at low heat demand.

A movable baffle pivots in a flue gas channel to adjust the cross-sectional opening size, resisting external winds and rains while allowing smooth exhaust.

Airflow modifier devices create turbulence to enhance fuel-air mixing, reducing excess air usage and pollutant emissions in asphalt dryer plants.

Inverting the counterweight inside the shutter housing resolves aesthetic and accessibility contradictions while simplifying manufacturing.

Nesting a fixed filter section inside the housing prevents soot leakage while protecting the filter from damage and maintaining visual appearance.

A burner connecting member features a removable cover to access the flame holder ramp without dismantling upstream components.

Segmented controllers independently rotate damper blades to resolve the contradiction between structural simplicity and precise draft management.

A unitary shaft extender connects to HVAC damper control mechanisms.

Thermoelectric generator converts waste flue heat into electricity for self-powered damper operation, eliminating complex power routing.

Mechanical fuse locks air control element to maintain minimum airflow, preventing incomplete combustion during power failures.

Interchangeable inserts in a modular gas-air mixer adjust air turbulence and flow, reducing production complexity across multiple boiler energy levels.