This document specifies the general requirements, purification requirements, test methods, inspection rules, marking, packaging, transportation and storage of air cleaner for bus.
This document is applicable to the air cleaner installed on Categories M2 and M3 buses. It may be referenced by other vehicles.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB 4706.45 Household and similar electrical appliances - Safety - Particular requirements for air-cleaning appliances
GB/T 13306 Plates
GB/T 13554 High efficiency particulate air filter
GB/T 14295 Air filter
GB/T 15089 Classification of power-driven vehicles and trailers
GB/T 21087-2020 Energy recovery ventilators for outdoor air handling
GB 21551.3-2010 Antibacterial and cleaning function for household and similar electrical appliances - Particular requirements of air cleaner
GB/T 30512 Requirements for prohibited substances on automobiles
GB 34660 Road vehicles - Requirements and test methods of electromagnetic compatibility
GB 38262 Flammability of interior materials for buses
HJ/T 400-2007 Determination of volatile organic compounds and carbonyl compounds in cabin of vehicles
QC/T 413 Basic technical requirements for automotive electric equipment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 15089 and the following apply.
3.1
air cleaner for bus
device that fixed in the bus and used to remove particulate matters, gaseous pollutants, microorganisms, etc. in the air
3.2
rated air flow
Q
air volume treated by the air cleaner per unit time under the specified state
Note: It is expressed in m3/h.
3.3
rated power
input power of air cleaner working at rated air flow and wind pressure in initial state
[Source: GB/T 34012-2017, 3.10]
3.4
target pollutant
specific air pollutants with clear composition, which are mainly including particulate matters, gaseous pollutants and microorganisms
[Source: GB/T 18801-2022, 3.2, modified]
3.5
clean air delivery rate
Qj
a parameter of a air cleaner’s cleaning capacity against the target pollutants (particulate matters and gaseous pollutants) under the specified test conditions, indicating the rate of the air cleaner to provide clean air
Note: It is expressed in m3/h.
[Source: GB/T 18801-2022, 3.8, modified]
3.6
cleaning energy efficiency
η
clean air delivery rate generated by the air cleaner in the rated mode per unit power consumption
Note: It is expressed in cubic meters per watt-hour [m3/(W·h)].
[Source: GB/T 18801-2022, 3.10, modified]
3.7
test chamber
device, with a limited confined space and the standard test conditions, for determining the capacity of the air cleaner to remove target pollutants in the air
[Source: GB/T 18801-2022, 3.4, modified]
3.8
removing rate
R
ratio of the difference between the initial concentration of the target contaminant and the concentration after the specified time of operation of the cleaner to the initial concentration (minus the effect of natural decay) after the specified time of operation of the cleaner under specified conditions
3.9
total decay
reduction of concentration of the target pollutants in the air in a specified space under the specified conditions due to combined action of natural decay and cleaning operation
Note: Natural decay refers to the reduction of concentration of the target pollutants in the air in a specified space under the specified conditions due to non-human factors such as settlement, agglomeration, surface deposition, chemical reaction and air exchange.
[Source: GB/T 18801-2022, 3.7]
4 General requirements
4.1 Basic requirements
4.1.1 The rated voltage of air cleaner for bus (hereinafter referred to as "air cleaner") shall be DC12V or DC24V.
4.1.2 The air cleaner shall be safe and odor-free.
4.1.3 It shall be convenient to disassemble and assemble the parts of air cleaner which are cleanable and replaceable.
4.1.4 The surface of air cleaner shall be smooth and clean, without scratch, rust stain, indentation or damage. The spray coating layer shall be uniform, without flow mark, bubble and scaling.
4.1.5 Parts shall be fastened without looseness; components like filtering material, divider, protective net, etc. shall be free from deformation; sealing gasket shall not get loose.
4.1.6 The enclosure of the air cleaner shall be marked with an electrical safety warning label.
4.1.7 The materials used in the air cleaner shall meet the requirements of GB/T 30512 for prohibited substances.
4.2 Performance requirements
4.2.1 The air filter in the air cleaner shall meet the relevant requirements of GB/T 14295 and GB/T 13554.
4.2.2 The combustion characteristics of non-metallic materials in the air cleaner shall meet the requirements of GB 38262.
4.2.3 The basic technical requirements of the air cleaner shall meet the relevant requirements of QC/T 413.
4.2.4 The electromagnetic compatibility of the air cleaner shall meet the relevant requirements of GB 34660.
4.3 Rated power
The rated power of the air cleaner shall meet the following requirements:
a) for air cleaners with a nominal value not greater than 30W, the test result shall not be greater than 120% of the nominal value;
b) for air cleaners with a nominal value greater than 30W, the test result shall not be greater than 110% of the nominal value;
4.4 Rated air flow
Under the rated power of the air cleaner, the test result of the maximum air volume shall not be less than 95% of the nominal value.
4.5 Noise
The measured external noise value of the air cleaner shall not greater than 66dB(A).
4.6 Release amount of hazardous substances
The release amount of hazardous substances from the air cleaner shall meet the requirements of GB 21551.3-2010, 4.1.2.
Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Purification requirements 6 Testing methods 7 Inspection rules 8 Marking, packaging, transport and storage Annex A (Informative) Test chamber Annex B (Normative) Calculation method of attenuation constant Annex C (Normative) Determination of volatile organic compounds — Gas chromatography-mass spectrometry Bibliography
