Range hoods and other cooking fume extractors
1 Scope
This document specifies the technical requirements of air performance, noise, odour reduction factor and grease absorption factor of range hoods and other cooking fume extractors [hereinafter referred to as "appliance(s)"] at the rated voltage not exceeding 250 V, describes the corresponding inspection rules and test methods, specifies the contents of marking, packaging, transportation and storage, and gives the product classification which is convenient for technical regulations.
This document does not address:
——appliances installed for industrial and commercial purposes;
——appliances installed in special occasions, such as the occasions where corrosive or explosive gas (dust, vapour or combustible gas) exists.
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 (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 1019-2008 General requirements for the package of household and similar electrical appliances
GB/T 1236-2017 Industrial fans - Performance testing using standardized airways
GB/T 1312 Lampholders for tubular fluorescent lamps and starter holders
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 3767-2016 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane
GB/T 3785.1-2010 Electroacoustics - Sound level meters - Part 1: Specifications
GB/T 4214.1-2017 Test method for noise of household and similar electrical appliances - General requirements
GB/T 6165 Test method of the performance of high efficiency particulate air filter - Efficiency and resistance
GB/T 17935 Edison screw lampholders
GB/T 17936 Bayonet lampholders
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GB/Z 34447-2017 Sharp edge testing apparatus and test procedure for lighting equipment - Tests for sharpness of edge
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
range hood
motor-operated appliance installed above the cooking range intended to collect and treat contaminated air
3.2
air-extraction range hood
range hood emitting the gas out of the room through pipes (3.1)
3.3
recirculating range hood
range hood treating the contaminated air and then returning it into the room (3.1)
3.4
dual type range hood
range hood that may be used as both air-extraction range hood and recirculating range hood (3.1)
3.5
down-draft system
device installed adjacent to or integrated in a cooking appliance and emitting cooking fume down through a pipe
Note: The down-draft system and integration cooking appliance with down-draft system are considered as types of other cooking fume extractors.
3.6
main motor
motor for driving fume exhaust impeller of appliance
3.7
highest continuous setting for normal use
setting where the appliance runs at rated voltage and rated frequency, and runs continuously at the highest speed under the static pressure of 0 Pa, and will not automatically adjust to other settings
?
3.8
non-continuous setting for use
setting where the apparatus runs at rated voltage and rated frequency, and runs continuously for not more than 3 min under the static pressure of 0 Pa, and will automatically adjust to other settings
3.9
max airflow
volume of air delivered per unit time where the appliance runs at the highest continuous setting for normal use and under the static pressure of 0 Pa
Note: It is expressed in cubic meter per minute (m3/min).
3.10
max static pressure
static pressure where the appliance runs at the highest continuous setting for normal use and the airflow is 0 m3/min
Note: It is expressed in Pascal (Pa).
......
4 Classification and designation
4.1 Classification of range hoods
4.1.1 Range hoods may be classified by exhaust mode into:
a) air-extraction type;
b) recirculating type;
c) dual type.
4.1.2 Range hoods may be classified by switch mode into:
a) mechanical type;
b) electronic type.
4.1.3 Range hoods may be classified by appearance characteristics into:
a) thin type;
b) deep type;
c) tower type;
d) side-extraction type;
e) other materials.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
5 Requirements
6 Test methods
7 Inspection rules
8 Marking, packaging, transportation and storage
Annex A (Normative) Air performance test methods
Annex B (Nominative) Test method for noise in hemi-anechoic rooms
Annex C (Normative) Test method for working noise
Annex D (Normative) Test method for odour reduction factor
Annex E (Normative) Test method for grease absorption factor
Bibliography
