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GB/T 4214 consists of the following seven parts under the general title Test method for noise of household and similar electrical appliances:
—Part 1: General requirements;
—Part 2: Particular requirements for vacuum cleaners;
—Part 3: Particular requirements for dishwashers;
—Part 4: Particular requirements for washing machines and spin extractors;
—Part 5: Particular requirements for electric shavers;
—Part 6: Particular requirements for electric hair care appliances;
—Part 7: Particular requirements for tumble dryers;
This is part 4 of GB/T 4214. This part is intended to be used in conjunction with GB/T 4214.1-2017.
The clauses stating "applicable” mean that corresponding clauses of GB/T 4214.1-2017 are applicable to this part; for those stating "replacement", the clauses of this part shall prevail; those stating "addition" mean that not only the corresponding clauses in GB/T 4214.1-2017, but also the added clauses of this part must be complied.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 4214.4-2008 Household and similar electrical appliances—Test code for determination of airborne acoustical noise—Particular requirements for washing machines and spin extractors. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 4214.4-2008:
—The clauses of “Measurement uncertainty” and “Standard deviation for declaration and verification” are added (see 1.3 and 1.101);
—The definitions of standard test load and standard test programme are modified (see Clause 3; Clause 3 of Edition 2008);
—The test enclosure is modified as those specified in GB/T 4214.1-2017 (see 6.5.5; 6.5.5 of Edition 2008);
—The contents of report are modified (see Clause 10; Clause 10 of Edition 2008).
This part is identical to IEC 60704-2-4:2011 Household and similar electrical appliances—Test code for the determination of airborne acoustical noise—Part 2-4: Particular requirements for washing machines and spin extractors by means of translation.
Editorial changes have been made in this part as follows:
—In order to unify the names of parts of GB/T 4214, this part is renamed as “Test method for noise of household and similar electrical appliances—Particular requirements for washing machines and spin extractors”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This part was proposed by China National Light Industry Council.
This part is under the jurisdiction of National Technical Committee on Household Electric Appliances of Standardization Administration of China (SAC/TC 46).
The previous editions of this part are as follows:
—GB/T 4214.4-2008.
Test method for noise of household and similar electrical appliances—
Particular requirements for washing machines and spin extractors
1 Scope and object
This clause of GB/T 4214.1-2017 is applicable except as follows:
1.1 Scope
1.1.1 General
Addition:
These particular requirements apply to single unit electrical washing machines and the washing and spinning function of combined appliances for household and similar use and to spin extractors for household and similar use.
Note 101: For drying function, see GB/T 4214.7.
1.1.2 Types of noise
Replacement:
The methods specified in GB/T 6881.2, GB/T 6881.3 and ISO 3744 can be used for measuring noise emitted by washing machines and spin extractors.
1.1.3 Size of the source
Replacement:
The method specified in ISO 3744 is applicable to noise sources of any size. When applying GB/T 6881.2 and GB/T 6881.3, care should be taken that the maximum size of the washing machine or spin extractor under test fulfills the requirements specified in 1.3 of GB/T 6881.2 and GB/T 6881.3.
1.2 Object
Addition:
Requirements for the declaration of noise emission values are not within the scope of this standard.
Note 101: For determining and verifying noise emission values declared in product specifications, see IEC 60704-3.
1.3 Measurement uncertainty
Replacement:
For washing machines, the estimated values of standard deviations of sound power levels, determined according to this standard, are as indicated in Table 101:
Table 101 Standard deviations of sound power levels for washing machines
Standard deviation / dB
σr (repeatability) σR (reproducibility)
0.6 1.0
For spin extractors, the estimated values of standard deviations of sound power levels, determined according to this standard, are as indicated in Table 102:
Table 102 Standard deviations of sound power levels for spin extractors
Standard deviation / dB
σr (repeatability) σR (reproducibility)
0.5 1.0
1.101 Standard deviation for declaration and verification
For the purpose of determining and verifying declared noise emission values for washing machines according to IEC 60704-3, the values indicated in Table 103 apply:
Table 103 Standard deviations for declaration and verification for washing machines
Standard deviation / dB
σP (production) σT (total) σM (reference)
1.0~2.2 1.4~2.4 2.5
For the purpose of determining and verifying declared noise emission values for spin extractors according to IEC 60704-3, the values indicated in Table 104 apply:
Table 104 Standard deviations for declaration and verification for spin extractors
Standard deviation / dB
σP (production) σT (total) σM (reference)
1.0~1.2 1.4~1.6 2.0
2 Normative references
The following referenced documents are indispensable for the application 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.
This clause of GB/T 4214.1-2017 is applicable except as follows:
IEC 60456:2010 Clothes washing machines for household use—Methods for measuring the performance
3 Terms and definitions
For the purposes of this part, the following terms and definitions apply.
This clause of GB/T 4214.1-2017 is applicable except as follows:
3.101
washing machine
appliance for cleaning and rinsing of textiles using water which may also have a means of extracting excess water from the textiles
3.102
rated capacity
maximum mass in kg of dry textiles of a particular defined type which the manufacturer declares can be treated in the washing machine on the program selected. If the rated capacity is not declared, it shall be deduced from the free inside volume of the drum, according to the following ratio:
—horizontal axis washing machines 1 kg/13 L;
—agitator washing machines 1 kg/15 L;
—impeller washing machines 1 kg/20 L;
—spin extractors 1 kg/4.6 L.
3.103
cotton test load
textile load consisting of towels only as defined in Annex C of IEC 60456:2010
3.104
washing period
begins at the first water filling of the main wash, ends at the start of the drainage pump before the first rinsing operation
Note: Options such as "pre-wash" are not included in the washing period.
?
3.105
rinsing period
begins at the start of the drainage pump before the first rinsing, ends at the start of the drainage pump after the last rinsing
3.106
final spin extraction period
begins at the start of the drainage pump after the last rinsing, ends with the end of the programme
3.107
end of programme
the programme is complete when the washing machine indicates the end of the programme and the load is accessible for the user. Where there is no end of programme indicator and the door is locked during operation, the programme is complete when the load is accessible to the user. Where there is no end of programme indicator and the door is not locked during operation, the programme is complete when the power consumption of the appliance drops to some steady state condition and the appliance is not performing any function
3.108
test series
sequence of three consecutive runs of the standard test programme in order to determine the sound power level of the appliance
Note: For the function “spin extraction”, three additional runs may be necessary.
4 Measurement methods and acoustical environments
This clause of GB/T 4214.1-2017 is applicable except as follows:
4.2 Direct method
Addition:
Note 101: If pure tone components are present in the noise emitted by the source, the estimated standard deviation of the measured sound pressure levels in the special reverberation room may increase. In such cases, additional microphone positions or source positions may be necessary as specified in GB/T 6881.3.
4.3 Comparison method
Addition:
Note 101: If pure tone components are present in the noise emitted by the source, the estimated standard deviation of the measured sound pressure levels in the hard-walled test room or in the special reverberation room may increase. In such cases, additional microphone positions or source positions may be necessary as specified in GB/T 6881.2 or GB/T 6881.3.
Foreword i
1 Scope and object
2 Normative references
3 Terms and definitions
4 Measurement methods and acoustical environments
5 Instrumentation
6 Operation and location of appliances under test
7 Measurement of sound pressure level
8 Calculation of sound pressure and sound power levels
9 Information to be recorded
10 Information to be reported
Annex A (Normative) Standard test bench
Bibliography
