Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-17: Particular requirements for dry-cleaning robots

IEC 60704-2-17:2020 describes the determination of the noise emission of dry-cleaning robots under normal operating conditions on carpet and hard floors.
This document applies to electrical dry-cleaning robots (including their accessories and their component parts) for household use or under conditions similar to those in households.
This document applies to electrical dry-cleaning robots operating in dry conditions only. Some additions and modifications for dry-cleaning robots operating in wet conditions are under consideration.
This document does not apply to dry-cleaning robots for industrial or professional purposes.
This document does not apply to
– manually operated vacuum cleaners, and
– dry-cleaning robots for outdoor use.
This Part 2-17 is intended to be used in conjunction with IEC 60704-1:2010. The relevant text of IEC 60704-1:2010 as amended by this publication establishes the test code for dry-cleaning robots.

Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 2-17: Exigences particulières pour les robots de nettoyage à sec

L'IEC 60704-2-17:2020 décrit le code d'essai pour la détermination du bruit aérien des robots de nettoyage à sec électriques destinés à un usage domestique ou dans des conditions analogues à celles des foyers domestiques.
Cette partie de l'IEC 60704-2 s'applique aux robots de nettoyage à sec électriques fonctionnant sur sol sec uniquement.
Des additions et modifications sont à l'étude pour les robots de nettoyage à sec fonctionnant sur sol humide.
Cette partie de l'IEC 60704-2 ne s'applique pas aux robots de nettoyage à sec destinés à des usages industriels ou professionnels.
Le présent document ne s'applique pas:
– aux aspirateurs à commande manuelle; ni
– aux robots de nettoyage à sec pour une utilisation en extérieur.
La présente Partie 2-17 est destinée à être utilisée conjointement avec l'IEC 60704-1:2010. Le texte correspondant de l'IEC 60704-1:2010 modifié par la présente publication établit le code d'essai pour les robots de nettoyage à sec.

General Information

Status
Published
Publication Date
27-Oct-2020
Current Stage
PPUB - Publication issued
Completion Date
28-Oct-2020
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IEC 60704-2-17
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Test code for the determination
of airborne acoustical noise –
Part 2-17: Particular requirements for dry-cleaning robots
Appareils électrodomestiques et analogues – Code d'essai pour
la détermination du bruit aérien –
Partie 2-17: Exigences particulières pour les robots de nettoyage à sec
IEC 60704-2-17:2020-10(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60704-2-17
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Test code for the determination
of airborne acoustical noise –
Part 2-17: Particular requirements for dry-cleaning robots
Appareils électrodomestiques et analogues – Code d'essai pour
la détermination du bruit aérien –
Partie 2-17: Exigences particulières pour les robots de nettoyage à sec
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.20 ISBN 978-2-8322-8479-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60704-2-17:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope and object ............................................................................................................. 6

2 Normative references ...................................................................................................... 7

3 Terms and definitions ...................................................................................................... 8

4 Measurement methods and acoustical environments ....................................................... 8

5 Instrumentation ................................................................................................................ 9

6 Operation and location of appliances under test .............................................................. 9

7 Measurement of sound pressure levels .......................................................................... 12

8 Calculation of sound pressure and sound power levels .................................................. 13

9 Information to be recorded ............................................................................................. 14

10 Information to be reported ............................................................................................. 14

Annex A (normative) Standard test table .............................................................................. 15

Annex B (normative) Test enclosure .................................................................................... 15

Annex AA (normative) Fenced area ..................................................................................... 16

Bibliography .......................................................................................................................... 17

Figure AA.1 – Example of fence ............................................................................................ 16

Table 101 – Standard deviations of sound power levels .......................................................... 7

Table 102 – Standard deviations for declaration and verification ............................................. 7

---------------------- Page: 4 ----------------------
IEC 60704-2-17:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –
Part 2-17: Particular requirements for dry-cleaning robots
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60704-2-17 has been prepared by subcommittee 59F: Surface

cleaning appliances of IEC technical committee 59: Performance of household and similar

electrical appliances.
The text of this International Standard is based on the following documents:
FDIS Report on voting
59F/395/FDIS 59F/400/RVD

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 5 ----------------------
– 4 – IEC 60704-2-17:2020 © IEC 2020

This Part 2-17 is intended to be used in conjunction with the third edition (2010) of

IEC 60704-1, Household and similar electrical appliances – Test code for the determination of

airborne acoustical noise – Part 1: General requirements.

The relevant text of IEC 60704-1:2010 as amended by this publication establishes the test code

for dry-cleaning robots.

This Part 2-17 supplements or modifies the corresponding clauses in IEC 60704-1:2010. When

a particular subclause of IEC 60704-1:2010 is not mentioned in this Part 2-17, that subclause

is applicable as far as reasonable. Where this standard states "addition", "modification" or

"replacement", the relevant requirements, test specifications or explanatory matter in

IEC 60704-1:2010 should be adapted accordingly.

Subclauses and tables that are additional to those in IEC 60704-1:2010 are numbered starting

from 101.

Unless notes are in a new subclause or involve notes in IEC 60704-1:2010, they are numbered

starting from 101, including those in a replaced clause or subclause.
In this document, the following print types are used:
• terms defined in Clause 3: Arial bold.

A list of all the parts in the IEC 60704 series, published under the general title Household and

similar electrical appliances – Test code for the determination of airborne acoustical noise, can

be found on the IEC website.

The committee has decided that the contents of this publication will remain unchanged until the

stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to

the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct understanding

of its contents. Users should therefore print this document using a colour printer.

---------------------- Page: 6 ----------------------
IEC 60704-2-17:2020 © IEC 2020 – 5 –
INTRODUCTION

The measuring conditions specified in this Part 2-17 provide for sufficient accuracy in

determining the noise emitted and comparing the results of measurements taken by different

laboratories, whilst simulating as far as possible the practical use of dry-cleaning robots.

It is recommended to consider the determination of noise levels as part of a comprehensive

testing procedure covering many aspects of the properties and performance of dry-cleaning

robots.

NOTE As stated in the introduction to IEC 60704-1:2010, this test code is concerned with airborne noise only.

---------------------- Page: 7 ----------------------
– 6 – IEC 60704-2-17:2020 © IEC 2020
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –
Part 2-17: Particular requirements for dry-cleaning robots
1 Scope and object
This clause of IEC 60704-1:2010 is applicable except as follows:
1.1 Scope
1.1.1 General
Replacement:

These particular requirements apply to electrical dry-cleaning robots (including their

accessories and their component parts) for household use or under conditions similar to those

in households. This part of IEC 60704-2 applies to electrical dry-cleaning robots operating in

dry conditions only.

NOTE Some additions and modifications for dry-cleaning robots operating in wet conditions are under consideration.

This part of IEC 60704-2 does not apply to dry-cleaning robots for industrial or professional

purposes.
This document does not apply to
– manually operated vacuum cleaners, and
– dry-cleaning robots for outdoor use.
1.1.2 Types of noise
Replacement:

The methods specified in ISO 3743-2 and ISO 3744 can be used for measuring noise emitted

by electric dry-cleaning robots.
1.1.3 Size of the source
Replacement:

The method specified in ISO 3744 is applicable to noise sources of any size. Limitations for the

size of the source are given in Clause 5 of ISO 3743-2:2018. Although the dry-cleaning robot

itself is a relatively small source, the covered floor area during the measurement comprises a

much larger effective source.
1.2 Object
Addition:

This part of IEC 60704 describes the determination of the noise emission of dry-cleaning robots

under normal operating conditions on carpet and hard floors.
---------------------- Page: 8 ----------------------
IEC 60704-2-17:2020 © IEC 2020 – 7 –

NOTE 101 For determining and verifying noise emission values declared in product specifications, see

IEC 60704-3.
1.3 Measurement uncertainty
Replacement:

The estimated values of standard deviations of sound power levels, determined in accordance

with this document, are given in Table 101.
Table 101 – Standard deviations of sound power levels
Standard deviation (dB)
σ (repeatability) σ (reproducibility)
r R
0,4 1,2
Addition:
1.101 Standard deviation for declaration and verification

For the purpose of determining and verifying declared noise emission values in accordance with

IEC 60704-3, the values are given in Table 102.
Table 102 – Standard deviations for declaration and verification
Standard deviation (dB)
σ (production) σ (total) σ (reference)
P t M
1,0 to 1,5 2,0 2,0
2 Normative references
This clause of IEC 60704-1:2010 is applicable except as follows:
Addition:

IEC 60704-1:2010, Household and similar electrical appliances – Test code for the

determination of airborne acoustical noise – Part 1: General requirements

IEC TS 62885-1, Surface cleaning appliances – Part 1: General requirements on test material

and test equipment
Replacement:

ISO 3743-2:2018, Acoustics – Determination of sound power levels of noise sources using

sound pressure – Engineering methods for small, movable sources in reverberant fields – Part 2:

Methods for special reverberation test rooms

ISO 3744:2010, 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
___________

The values in the standard deviation tables will be further considered and improved.

---------------------- Page: 9 ----------------------
– 8 – IEC 60704-2-17:2020 © IEC 2020
3 Terms and definitions
This clause of IEC 60704-1:2010 is applicable except as follows:
Addition:

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.101
standard Wilton test carpet
Wilton carpet on which the robot is moving during the test

Note 1 to entry: The specification of the standard Wilton test carpet can be found in IEC/TS 62885-1.

3.102
standard hard floor
floor of the test room on which the robot is moving during the test
3.103
fenced area

area of the floor of the test room, limited by a fence, in which the robot can move around during

the test
4 Measurement methods and acoustical environments
This clause of IEC 60704-1:2010 is applicable except as follows:
4.2 Direct method
Addition:

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 can increase.

In such cases, additional microphone positions or source positions can be necessary, as

specified in ISO 3743-2.
4.3 Comparison method
Replacement:
The comparison method for measurement is explicitly described in ISO 3743-2.

NOTE 101 The term "comparison method" is not explicitly given in ISO 3744, but when applying the "absolute

comparison test" for the determination of the environmental correction given in Clause A.3 of ISO 3744:2010, by

using a reference sound source, the procedure is, in fact, a comparison method.

With this method, the sound power level is determined by comparing the averaged values (on

a mean-square basis) of the sound pressure levels produced by the source in the test room to

the averaged values of the sound pressure levels produced in the same room by a calibrated

reference sound source (RSS) of known sound power output, complying with the requirements

of ISO 6926. The difference in sound pressure levels is equal to the difference in sound power

levels when conditions are the same for both sets of measurements.
---------------------- Page: 10 ----------------------
IEC 60704-2-17:2020 © IEC 2020 – 9 –

This method yields results expressed in octave-band sound power levels, and the A-weighted

sound power level is calculated from the octave-band sound power levels.

To check whether there is a systematic difference between results obtained in different

environments, the use of the comparison method is recommended.

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 can increase.

In such cases, additional microphone positions or source positions may be necessary, as

specified in ISO 3743-2.
4.4 Acoustical environments
4.4.1 General requirements and criterion for adequacy of the test environment
Replacement:
They are given in Clause 4 of
– ISO 3743-2:2018 for special reverberation test rooms;
– ISO 3744:2010 for free-field conditions over reflecting plane.

NOTE 101 For free-field conditions over a reflecting plane, the absolute comparison test for the qualification of the

environment, described in Clause A.3 of ISO 3744:2010, is preferred.

Guidelines for the design of simple test rooms with free field conditions are given in Annex C

of IEC 60704-1:2010.
4.4.2 Criterion for background noise level
Replacement:

Requirements for the background noise level are given in Clause 4 of ISO 3743-2:2018 and

ISO 3744:2010. Averaged over the microphone positions, the background noise level shall be

at least 6 dB below, and preferably more than 15 dB below, the sound pressure level to be

measured.

NOTE 101 If the difference between the sound pressure levels of the background noise and the appliance noise is

less than 6 dB, see 8.2 of IEC 60704-1:2010.
5 Instrumentation
This clause of IEC 60704-1:2010 is applicable except as follows:
5.1 Instrumentation for measuring acoustical data
Addition:

The use of a microphone windscreen is recommended. If necessary, the observed sound

pressure level shall be corrected for changes in the microphone sensitivity, in accordance with

the instructions accompanying the instrumentation.
6 Operation and location of appliances under test
This clause of IEC 60704-1:2010 is applicable except as follows:
---------------------- Page: 11 ----------------------
– 10 – IEC 60704-2-17:2020 © IEC 2020
6.1 Equipping and pre-conditioning of appliances
Replacement:

6.1.1 The robot is to be fitted for cleaning carpets or hard floors, in accordance with the

manufacturer's instructions. The robot shall be free of dust or particles from previous usage to

the extent that a normal end user could achieve. If the cleaning robot is designed to be used

with disposable dust receptacles, it shall, prior to each measurement, be equipped with a new

dust receptacle of the type recommended or supplied by the manufacturer of the cleaning robot.

If the cleaning robot is provided with a reusable dust receptacle (as the sole original dust

receptacle or as an enclosure for disposable dust receptacles), the dust receptacle and any

additional filters removable without the aid of tools shall, prior to each measurement, be cleaned

according to manufacturer's instructions until its weight is within 1 % or 2 g of its original weight,

whichever is lower.

Prior to conducting any series of tests, the age, condition, and history of the product shall be

recorded and reported.

NOTE 101 Sounds produced from a docking device are not part of the sound measurement.

Replacement:

6.1.4 Prior to the first test, the robot shall have been in operation for at least two full

charge/discharge cycles for the purpose of running in.

Before the noise test, the robot shall not have been in operation (i.e. no motors shall be running)

for at least 1 h, to ensure a cool starting condition. This means that there is no stabilisation

period prior to the sound measurement.
6.2 Supply of electric energy and water or gas
Replacement:

Prior to a series of measurements, the robot shall have been in its docking station for at least

24 h or until the charging is completed in accordance with the manufacturer's instructions to

ensure full batteries. The docking station shall have been supplied with electrical energy during

this period.
6.4 Loading and operating of appliances during tests
Replacement:

6.4.2 The loading of the robot consists of the standard hard floor or the standard Wilton

test carpet bounded by a fence. This fenced area is where the robot will move. Before the

noise test starts, the robot is placed inside the fence, at a random position leaving a gap

between the robot and the fence of at least 15 cm.

For dry-cleaning robots using cameras for navigation the measurements shall be carried out

under the following lighting conditions.
Intensity: (200 ± 50) lx
Colour temperature: 2 000 K to 7 000 K
Replacement:
6.4.3
Replacement:
---------------------- Page: 12 ----------------------
IEC 60704-2-17:2020 © IEC 2020 – 11 –
Unless otherwise specified,

• the cleaning robot, its attachments, the docking station and any accessories shall be used

and adjusted in accordance with the manufacturer's instructions before a test is carried out,

and
• the operation mode of the robot can be selected and adjusted according to the

manufacturer's published instructions only before the test to fit the environment to be

cleaned.
The mode and settings used for the test shall be recorded and reported.
Any safety-related device shall be able to operate.

The robot is switched on and free from its docking station. The robot is in operation for at least

1 min during the sound measurement. If the cleaning has stopped before this 1 min measuring

time, multiple measurements shall be taken until a minimum of 1 min measuring time is

achieved. Then, the energy equivalent average is calculated.

Sufficient coverage is important in (hemi-) anechoic rooms because the fenced area in which

the robot moves presents the measurement system with a spatially extended source. In order

to get good estimates with the different microphones, sufficient coverage is necessary. Sounds

from operations before and after the cleaning operation shall be excluded. This excludes sounds

from base station operations. The base station is placed outside the fenced area, preferably

outside the measurement room.
NOTE 101 Usually, the fenced area has been covered after 1 min of operation.

In order to be able to recognize potential abnormal behaviour, the robot should be monitored

via observation cameras and microphones during the noise measurement. The behaviour

should be monitored. The test report should contain a brief description of the behaviour of the

robot under test during the measurement.
6.5 Location and mounting of appliances
6.5.1
Replacement:
For measurement on carpet:

The dry-cleaning robot is located on the standard standard Wilton test carpet, specified in

IEC TS 62885-1, placed directly without any resilient means:

– either on the floor of the special reverberation test room with a minimum distance of 1 m

between any surface (including protruding parts) of the fenced area and the nearest wall,

– on the reflecting plane of the free-field environment, taking into account the shape and the

size of the specified measurement surface.

If the carpet is located inside the box, the gap between carpet edge and fence shall be less

than 5 mm.
For measurements on standard hard floor:
---------------------- Page: 13 ----------------------
– 12 – IEC 60704-2-17:2020 © IEC 2020

The dry-cleaning robot is located on the standard hard floor placed directly without any

resilient means:

– either on the floor of the special reverberation test room with a minimum distance of 1 m

between any surface (including protruding parts) of the fenced area and the nearest wall,

– on the reflecting plane of the free-field environment, taking into account the shape and the

size of the specified measurement surface.

Generally, the floor in a special reverberation test room or in a (hemi-) anechoic test room fulfils

the requirements for a standard hard floor. The standard test floor should have a sound

absorption coefficient smaller than 0,1, an areal density of at least 5
...

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