1 Scope
This standard specifies terms and definitions, classification and marking, requirements, test methods, inspection rules, marking, packaging, transportation and storage of air filter (referred to as filter).
This standard is applicable to dry type filter of ventilating, air conditioning and air purification system or equipment under normal temperature and normal humidity, including external electric field.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments (excluding corrigendum contents) or revisions do not apply. However, the parties whose enter into agreement according to this part are encouraged to research whether the latest editions of these documents are applied or not. For undated normative references, the latest edition of the normative document is applicable to this part.
GB/T 191 Packaging - Pictorial Markings for Handling of Goods
GB/T 1236-2000 Industrial Fans-Performance Testing Using Standardized Airways
GB/T 2423.3-2006 Environmental Testing for Electric and Electronic Products - Part 2: Testing Method – Test Cab: Damp Heat Steady State
GB/T 2624.1-2006 Measurement of Fluid Flow by Means of Pressure Differential Devices Inserted in Circular Cross-Section Conduits Running Full - Part 1: General Principles and Requirements
GB/T 2624.2-2006 Measurement of Fluid Flow by Means of Pressure Differential Devices Inserted in Circular Cross-Section Conduits Running Full - Part 2: Orifice Plates
GB/T 2624.3-2006 Measurement of Fluid Flow by Means of Pressure Differential Devices Inserted in Circular Cross-Section Conduits Running Full - Part 3: Nozzles and Venturi Nozzles
GB/T 2624.4-2006 Measurement of Fluid Flow by Means of Pressure Differential Devices Inserted in Circular Cross-Section Conduits Running Full - Part 4: Venturi Tubes
GB 4706.1-2005 Household and Similar Electrical Appliances Safety - General Requirements
GB/T 4857.23-2003 Packaging - Transport Packages - Random Vibration Test Method
GB/T 6167 Methods for Testing the Performance of Airborne Particle Counter
GB/T 8170 Rules for Rounding off of Numerical Values
GB 8624 Classification for Burning Behavior of Building Materials and Products
GB/T 18883-2002 Indoor Air Quality Standard
GB 50243 Code of Acceptance for Construction Quality of Ventilation and Air Conditioning Works
3 Terms and Definitions
For the purpose of this standard, the following terms and definitions shall apply.
3.1
Dry type filter
Filter whose filter material is free from oil immersion or other liquids spraying.
3.2
Sub-HEPA (high efficiency particulate air) filter
Filter with particle size greater than or equal to 0.5μm and counting efficiency of particles greater than or equal to 95% but less than 99.9%, inspected by the methods specified in this standard.
3.3
High efficiency filter
Filter with particle size greater than or equal to 0.5μm and counting efficiency of particles greater than or equal to 70% but less than 95%, inspected by the methods specified in this standard.
3.4
Medium efficiency filter
Filter with particle size greater than or equal to 0.5μm and counting efficiency of particles less than 70%, inspected by the methods specified in this standard. Thereinto, counting efficiency of Model 1 filter is greater than or equal to 60%, that of Model 2 filter is greater than or equal to 40% but less than 60%, and that of Model 3 filter is greater than or equal to 20% but less than 40%.
