Xinxiang Filter

Industry Pain Points

The aerospace and transportation sectors impose extremely stringent standards on filter elements in terms of reliability, safety and airworthiness compliance. Aircraft avionics bays house precision electronic equipment including flight control computers, navigation systems and communication systems, which are highly sensitive to particulate contaminants and humidity. Tiny dust particles may trigger short circuits on circuit boards, while excessive humidity leads to condensed water corrosion of electronic components.

The passenger cabin is an enclosed space. Failure to efficiently filter airborne aerosols, bacteria and viruses will drastically raise the risk of cross-transmission of respiratory illnesses.

If the oxygen concentration in the ullage space above fuel tanks exceeds the safe threshold, fuel tank explosions may occur upon exposure to static sparks or high-temperature heat sources, posing a direct threat to flight safety.

Solutions & Applications

1. Clean & Dry Air for Environmental Control SystemsPre-filter air filter cartridges and air water removal filter cartridges deliver dust-free, dry cooling air to aircraft avionics bays to avoid corrosion and short-circuit failures of precision circuit boards.

2. Cabin Air SafetyAircraft cabin HEPA filters trap particles larger than 0.3 μm with a filtration efficiency of ≥99.97%, enabling rapid cabin air renewal and effectively mitigating virus transmission risks.

3. Fuel Tank Fire SuppressionMulti-stage filter assemblies for Nitrogen Generation Systems (NGS) feature four pretreatment processes: particulate filtration, coalescing oil removal, ozone catalysis and activated carbon adsorption. These units eliminate oil mist, solid particles, ozone and volatile organic compounds from engine bleed air to protect downstream hollow-fiber Air Separation Membranes (ASM). High-purity Nitrogen-Enriched Air (NEA) generated via the membranes is injected into fuel tank ullage spaces to eliminate explosion hazards at the source.

Typical Application Scenarios

• Ventilation systems for avionics bays, cabin recirculation air systems and fuel tank inerting systems of civil airliners, general aviation aircraft and business jets

• Ventilation filtration for rail transit traction control systems and air purification for electrical control cabinets