Views: 0 Author: Site Editor Publish Time: 2025-11-05 Origin: Site
Positioning: The first physical barrier of air purification systems, specifically designed to intercept large particle pollutants.
1. Core Functions & Features
Item | Description |
Filtration Objects | Hair, dust, catkins, mosquitoes, fibers (visible suspended matter with particle size ≥5μm) |
Filtration Efficiency | G1-G4 class (per ISO 16890 standard), retention rate 20%-90% |
Core Materials | Metal wire mesh, synthetic chemical fiber (polyester fiber), glass fiber (washable or disposable) |
Air Resistance Performance | Extremely low air resistance (≤30 Pa), ensuring air circulation efficiency |
Service Life | 1-3 months (depending on environmental dust load); washable type can be reused 3-5 times |
2. Core Application Scenarios
1. Pre-protection Layer
Central air conditioning/fresh air systems: Protect high-efficiency particulate air (HEPA) filters at the back end, extending their service life by over 30%.
Industrial workshops: Block metal shavings, wood chips, etc., to prevent wear of precision equipment.
2. Independent Application Scenarios
Building ventilation openings: Prevent mosquitoes and fallen leaves from entering pipelines.
Household window-type fresh air devices: Low-cost filtration of pollen and catkins.
3. Irreplaceable Value
Economy: Cost is only 1/10 of high-efficiency filters, significantly reducing system maintenance costs.
Energy Consumption Optimization: Low air resistance reduces fan load, lowering energy consumption by 15%-20% year-on-year.
System Protection: Prevent large particles from clogging precision filters, reducing equipment failure rate.
4. Technical Parameter Comparison Table
Class (EN779) | Filtration Efficiency (for 0.4μm particles) | Applicable Scenarios |
G1 | 20%-40% | Slightly polluted environments (e.g., home living rooms) |
G2 | 40%-60% | Ordinary offices, classrooms |
G3 | 60%-80% | Catering kitchens, underground parking lots |
G4 | 80%-90% | Hospital corridors, industrial primary filtration areas |
5. Usage & Maintenance Key Points
Replacement Signal: Replace immediately when the filter turns black (visually) or air permeability decreases by more than 50%.
Disposal: Seal and discard disposable filters directly to avoid secondary pollution from dust emission.
