IEC 60704-2-13:2023

Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-13: Particular requirements for cooking fume extractors

IEC 60704-2-13:2023 applies to cooking fume extractors for household and similar use intended for filtering the air of a room or for exhausting the air out of a room, including their accessories and their component parts. It also applies to cooking fume extractors where the fan is mounted separately from the appliance inside or outside of the room where the appliance is located, but controlled by the appliance when the fan is defined in the technical documentation. This document deals also with down-draft systems that are arranged beside, behind or under the cooking appliance.
Measurements carried out in accordance with this document determine the noise emission into the room, from which cooking fumes are extracted. Noise emission to the outside (e.g. through air ducts) are not considered.
This fourth edition cancels and replaces the third edition published in 2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) alignment with IEC 61591:2023;
b) change of title, scope and definitions 3.103 and 3.104: this document deals with cooking fume extractors (this covers range hoods and down-draft systems);
c) exhaust pipe of down-draft systems specified;
d) built-in range hoods in recirculation mode with an air outlet device specified;
e) alignment with IEC 60704-1:2021.
This document is to be used in conjunction with IEC 60704-1:2021.

Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 2-13: Exigences particulières pour extracteurs de fumée

L'IEC 60704-2-13:2023 s'applique aux extracteurs de fumée de cuisine pour usages domestiques et analogues, destinés à recycler l'air de la pièce ou à évacuer l'air hors de la pièce, y compris leurs accessoires et leurs composants. Elles s'appliquent également aux extracteurs de fumée de cuisine dans lesquels le ventilateur est monté séparément de l'appareil, à l'intérieur ou à l'extérieur de la pièce dans laquelle est installé l'appareil, mais est commandé par l'appareil lorsque le ventilateur est défini dans la documentation technique. Le présent document couvre également les extracteurs verticaux qui sont installés à côté, à l'arrière ou au-dessous de l'appareil de cuisson.
Les mesurages effectués conformément au présent document permettent de déterminer les émissions sonores dans la pièce à partir de laquelle sont extraites les fumées de cuisson. Les émissions sonores vers l'extérieur (à travers les conduits d'air, par exemple) ne sont pas prises en compte.
Cette quatrième édition annule et remplace la troisième édition parue en 2016. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) alignement sur l'IEC 61591:2023;
b) modification du titre, du domaine d'application et des définitions 3.103 et 3.104: le présent document traite des extracteurs de fumée de cuisine (ce qui comprend les hottes de cuisine et les extracteurs verticaux);
c) spécification du tuyau d'évacuation des extracteurs verticaux;
d) hottes intégrées en mode recyclage, équipées d'un dispositif de sortie d'air spécifié ;
e) alignement sur l’IEC 60704-1:2021.
La présente Norme internationale doit être utilisée conjointement avec l'IEC 60704-1:2021.

General Information

• Status: Published
• Publication Date: 02-Oct-2023
• ICS: 17.140.20 - Noise emitted by machines and equipment
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• Technical Committee: SC 59K - Performance of household and similar electrical cooking appliances
• Drafting Committee: JWG 2 - TC 59/JWG 2
• Current Stage: PPUB - Publication issued
• Start Date: 03-Oct-2023
• Completion Date: 03-Nov-2023

Relations

• Revises: IEC 60704-2-13:2016 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-13: Particular requirements for range hoods and other cooking fume extractors
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60704-2-13 ®
Edition 4.0 2023-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-13: Particular requirements for cooking fume extractors

Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-13: Exigences particulières pour extracteurs de fumée
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IEC 60704-2-13 ®
Edition 4.0 2023-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Test code for the determination of

airborne acoustical noise –
Part 2-13: Particular requirements for cooking fume extractors

Appareils électrodomestiques et analogues – Code d'essai pour la

détermination du bruit aérien –

Partie 2-13: Exigences particulières pour extracteurs de fumée

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.20, 97.040.20 ISBN 978-2-8322-7577-1

– 2 – IEC 60704-2-13:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Measurement methods and acoustical environments . 8
5 Instrumentation . 9
6 Operation and location of appliances under test . 10
7 Measurement of sound power levels . 17
8 Calculation of sound pressure and sound power levels . 18
9 Information to be recorded . 18
10 Information to be reported . 18
Annexes . 19
Annex A (normative) . 19

Figure 101 – Standard load for CFEs . 11
Figure 102 – Standard load for CFEs with an external fan . 13
Figure 103 – Test enclosure for down-draft systems . 14
Figure 104 – Test enclosure for built-in appliances . 16
Figure 105 – Example of standard stand . 16

Table 1 – Standard deviations of sound power levels . 9
Table 2 – Standard deviations for declaration and verification . 9
Table 103 – Diameter of the standard load for CFEs . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION OF
AIRBORNE ACOUSTICAL NOISE –
Part 2-13: Particular requirements for cooking fume extractors

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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IEC 60704-2-13 has been prepared by subcommittee 59K: Performance of household and
similar electrical cooking appliances, of IEC technical committee 59: Performance of household
and similar electrical appliances. It is an International Standard.
This fourth edition cancels and replaces the third edition published in 2016. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with IEC 61591:2023;
b) change of title, scope and definitions 3.103 and 3.104: this document deals with cooking
fume extractors (this covers range hoods and down-draft systems);

– 4 – IEC 60704-2-13:2023 © IEC 2023
c) exhaust pipe of down-draft systems specified;
d) built-in range hoods in recirculation mode with an air outlet device specified;
e) alignment with IEC 60704-1:2021.
The text of this International Standard is based on the following documents:
Draft Report on voting
59K/376/FDIS 59K/380/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This International Standard is to be used in conjunction with IEC 60704-1:2021.
This document supplements or modifies the corresponding clauses in IEC 60704-1:2021, so as
to establish the test code for cooking fume extractors. When a particular subclause of
IEC 60704‑1:2021 is not mentioned in this document, 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 60704‑1:2021 are to be adapted
accordingly.
Subclauses, tables and figures that are numbered starting from 101 are additional to those in
IEC 60704‑1:2021. Additional annexes are lettered AA, BB, etc.
Unless notes are in a new subclause or involve notes in IEC 60704‑1:2021, they are numbered
starting from 101, including those in a replaced clause or subclause.
A list of all 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.
In this standard, the following print types are used:
• terms defined in Clause 3: bold type.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
INTRODUCTION
The measuring conditions specified in this document 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 cooking fume extractors
mounted in household kitchens.
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 cooking fume
extractors.
NOTE As stated in the introduction to IEC 60704-1:2021, this test code is concerned with airborne noise only.

– 6 – IEC 60704-2-13:2023 © IEC 2023
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION OF
AIRBORNE ACOUSTICAL NOISE –
Part 2-13: Particular requirements for cooking fume extractors

1 Scope
Addition:
These particular requirements apply to cooking fume extractors for household and similar use
intended for filtering the air of a room or for exhausting the air out of a room, including their
accessories and their component parts. It also applies to cooking fume extractors where the
fan is mounted separately from the appliance inside or outside of the room where the appliance
is located, but controlled by the appliance when the fan is defined in the technical
documentation. This document deals also with down-draft systems that are arranged beside,
behind or under the cooking appliance.
Measurements carried out in accordance with this document determine the noise emission into
the room, from which cooking fumes are extracted. Noise emission to the outside (e.g. through
air ducts) are not considered.
2 Normative references
Addition:
IEC 60704-1:2021, Household and similar electrical appliances – Test code for the
determination of airborne acoustical noise – Part 1: General requirements
IEC 61591:2023, Cooking fume extractors – Methods for measuring performance
ISO 7235:2003, Acoustics – Laboratory measurement procedures for ducted silencers and air-
terminal units – Insertion loss, flow noise and total pressure loss
3 Terms and definitions
Addition:
3.101
cooking fume extractor
CFE
appliance with fan and filter intended to collect and treat cooking fumes, which can be operated
in recirculation mode or extraction mode
[SOURCE: IEC 61591:2023, 3.2]
3.102
range hood
CFE installed over a cooking appliance
[SOURCE: IEC 61591:2023, 3.3]
3.103
wall range hood
range hood mounted to the wall
[SOURCE: IEC 61591:2023, 3.3.1]
3.104
island range hood
range hood mounted to the ceiling
[SOURCE: IEC 61591:2023, 3.3.2]
3.105
ceiling range hood
range hood integrated onto or into the ceiling
[SOURCE: IEC 61591:2023, 3.3.3]
3.106
built-in range hood
range hood mounted into or onto a cabinet
[SOURCE: IEC 61591:2023, 3.3.4]
3.107
microwave hood combination
CFE integrated in a microwave oven
[SOURCE: IEC 61591:2023, 3.4]
3.108
multiple combination hood
CFE where the fan is mounted separately of the appliance, but controlled by the appliance
[SOURCE: IEC 61591:2023, 3.5]
3.109
down-draft system
CFE intended for installation adjacent to a cooking appliance or integrated in a cooking
appliance that draws vapour down into a duct
Note 1 to entry: A down-draft system can also be a system where the fan is mounted separately from the appliance
but controlled by the appliance.
[SOURCE: IEC 61591:2023, 3.6]
3.110
recirculation mode
mode of a CFE that discharges air back into the room, which includes an odour-reduction
filter
[SOURCE: IEC 61591:2023, 3.7]
– 8 – IEC 60704-2-13:2023 © IEC 2023
3.111
extraction mode
mode of a CFE that discharges the air to the outside of the building by means of ducting
Note 1 to entry: Extraction mode is also known as "vented mode" or "ducted mode".
[SOURCE: IEC 61591:2023, 3.8]
3.112
rated voltage
voltage assigned to the CFE by the manufacturer
[SOURCE: IEC 61591:2023, 3.9]
3.113
grease filter
components for absorbing grease, which are intended to be replaced or removed for cleaning
without tools
[SOURCE: IEC 61591:2023, 3.11]
3.114
odour-reduction filter
components for reducing odour
[SOURCE: IEC 61591:2023, 3.12]
3.115
highest continuous setting for normal use
control setting of CFE at highest speed, excluding the boost position setting
Note 1 to entry: Marked setting on the appliance, which is described in the instructions for use.
[SOURCE: IEC 61591:2023, 3.15]
3.116
boost position setting
marked control setting at maximum fan speed, which is automatically limited in duration
Note 1 to entry: Marked setting on the appliance, which is described in the instructions for use.
[SOURCE: IEC 61591:2023, 3.16]
4 Measurement methods and acoustical environments
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 3743-2:2018.
4.3 Comparison 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 hard-walled test room or in the special
reverberation room can increase. In such cases, additional microphone positions or source
positions can be necessary, as specified in ISO 3743-1:2010 or ISO 3743-2:2018.
4.5 Measurement uncertainties
4.5.2 Standard deviations on repeatability and reproducibility and standard deviations
related to declaration and verification
Replacement:
The estimated values of standard deviations of sound power levels determined in accordance
with this document are given in Table 1:
Table 1 – Standard deviations of sound power levels
Standard deviation (dB)
σ (repeatability) σ (reproducibility)
r R
0,4 1,0
For the purpose of determining and verifying noise emission values in accordance with
IEC 60704-3, the values in Table 2 apply:
Table 2 – Standard deviations for declaration and verification
Standard deviation (dB)
σ (production) σ (total) σ (reference)
P t M
1,5 to 1,7 1,8 to 2,0 2,0
5 Instrumentation
5.1 Instrumentation for measuring acoustical data
Addition:
The use of a windscreen is recommended. If necessary, the observed sound pressure level
shall be corrected for changes in the microphone's sensitivity, in accordance with the
instructions accompanying the instrumentation.

– 10 – IEC 60704-2-13:2023 © IEC 2023
6 Operation and location of appliances under test
6.1 Equipping and pre-conditioning of appliances
6.1.1
Addition:
CFEs shall be fitted with (a) clean filter(s).
NOTE The filter(s) have to be replaced after a grease absorption test, while an odour-reduction test does not soil
the filter(s).
CFEs in extraction mode shall be fitted with the pipe coupling ring, if any, having the largest
diameter among those provided by the manufacturer.
Any pull-out or swing-out mechanism that can be opened to a position for normal use in
accordance with the manufacturer's instructions shall be opened during the test. Positions that
are for cleaning and maintenance purposes only shall be not considered. If the manufacturer’s
instruction does not state any information, the pull-out or swing-out mechanism shall be
completely closed.
If the down-draft system can be elevated, the manufacturer’s instructions are followed;
otherwise, it shall be measured in its maximum elevated position for use.
6.1.3
Replacement:
Prior to noise measurements, the CFE shall be operated for at least 4 h at the highest
continuous setting for normal use (see 3.115).
6.1.4
Replacement:
Immediately before each series of noise measurements, the CFE equipped for its intended use
is operated to stabilize at the highest continuous setting for normal use (see 3.115) for at
least 10 min.
6.2 Supply of electrical energy and of water or gas
6.2.3 and 6.2.4 Not applicable.
6.4 Loading and operating of appliances during tests
6.4.1
Replacement:
This document describes the determination of the noise emission of household CFEs and can
be applied for the measurement at all fan speed settings, including on a boost position, if any.
The noise shall be reported at least for the highest continuous setting for normal use.
6.4.2
Replacement:
The CFE shall be equipped in accordance with 6.1.1.

CFEs in extraction mode shall be loaded using a pipe connected to a muffler, in accordance
with Figure 101. The pipe shall be rigid with smooth inner walls and shall have a diameter
according to Table 103. The muffler shall have an insertion loss as specified in the table of
Figure 101. It shall have a circular section with the same internal diameter as that of the pipe,
a length as specified in Figure 101 and shall not have parts protruding inside that can cause
additional pressure drops. The pipe and the muffler shall also comply with all the specifications
shown in Figure 101 and care shall be taken that they do not radiate noise.
Dimensions in millimetres
Minimum insertion loss in decibels for octave bands
125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz
8 20 20 20 20 20 20
NOTE Insertion loss measured in accordance with ISO 7235:2003

Key:
1 muffler
2 connections
3 pipe with smooth inner walls
a
The muffler shall have the same internal diameter as that of the pipe and shall have at least the insertion loss
reported in the table.
b
The connections shall not interfere with the air flow to avoid any additionnal noise or pressure drop.
c
For the measurement of the diameter d see 6.4.2
Figure 101 – Standard load for CFEs

– 12 – IEC 60704-2-13:2023 © IEC 2023
Table 103 – Diameter of the standard load for CFEs
Measured inner diameter d of the air-
Inner diameter d of the
CFE
Diameter category
standard load in mm
outlet of the cooking fume extractor in mm
d ≤ 110
100 100 ± 2
CFE
110 < d ≤ 135
125 125 ± 3
CFE
135 < d ≤ 175
150 150 ± 5
CFE
175 < d ≤ 225
200 200 ± 8
CFE
d > 225
250 250 ± 10
CFE
NOTE This table is based on IEC 61591:2023, Table 3.

For a CFE in extraction mode intended to be connected to an exhaust pipe with a rectangular
cross-section, a round exhaust pipe shall be used. The diameter category of the standard load
shall be in accordance with Table 103 according to the inner diameter of an adapter or a
recommendation given by the manufacturer. If no adapter is provided and no recommendation
is given, a diameter d shall be calculated corresponding to the cross-section of the outlet of
CFE
the appliance.
To connect the standard load to the rectangular air-outlet, an additional adapter pipe element
shall be used. This adapter element shall not cause an additional pressure drop and shall not
radiate additional noise. The length of this adapter element is not considered as a part of the
total length l + l + l of the standard load.
1 2 3
A CFE with an external fan shall be connected to the fan with a pipe and a muffler in accordance
with Figure 102. The pipe shall be rigid with smooth inner walls and shall have the widest
diameter among those specified by the manufacturer. If not stated, a standard pipe with the
best fitting diameter shall be used, in accordance with Table 103. The muffler shall be the
preferred one according to the manufacturer’s instructions. If the manufacturer does not
recommend a certain type of muffler, the CFE is tested without a muffler. The total length of the
pipe shall be in accordance with the value stated in Figure 102.

Dimensions in millimetres
Key:
1 external fan
2 muffler
3 connections
4 pipe with smooth inner walls
a
Muffler in accordance with the manufacturer’s instructions
b
The connections shall not interfere with the air flow to avoid any additionnal noise or pressure drop.
c
For the measurement of the diameter d see 6.1.1
Figure 102 – Standard load for CFEs with an external fan
When connecting the pipe, a muffler system or the external fan to the CFE, this connection shall
not transfer any structure-borne noise. For this purpose, isolating connecting pieces can be
used.
Static forces from the standard load to the CFE shall also be avoided.
The fastening of the muffler shall not influence the acoustical field in the test room; for example,
two wires are fixed around the muffler and on the ceiling.
Whenever it is possible to choose among two or more exit holes for the pipe connection, the
one on the upper side of the CFE, if any, shall be used.
CFEs designed for connection with more than one pipe at the same time shall be connected
accordingly to the number of pipes required.
6.4.3 Not applicable.
– 14 – IEC 60704-2-13:2023 © IEC 2023
6.5 Location and mounting of appliances
6.5.2 Not applicable.
6.5.3 Not applicable.
6.5.4
Addition:
Down-draft systems intended to be integrated into a cabinet are mounted in a test enclosure,
which is shown in Figure 103. The width of the enclosure is the smallest possible one of 70 cm,
100 cm or 130 cm. The depth is the smallest possible one of 60 cm or 75 cm. The height
including a clearance below the bottom of the enclosure is 90 cm. All these measurements are
for the outer dimensions of the enclosure, with a tolerance of ±5 cm. The clearance below the
bottom of the test enclosure shall be 10 cm ± 5 cm. If the appliance does not fit into the largest
cabinet, a test enclosure with the smallest possible measures according to manufacturer’s
instructions shall be used.
The enclosure can be reinforced by an inner frame. The bottom of the enclosure is closed.
There are cut-outs at the rear and/or bottom side for the exhaust pipe and power supply. The
front, back, sides and bottom of the enclosure are made from a material in accordance with
IEC 60704‑1:2021, Annex B. The worktop of the enclosure is (40 ± 10) mm thick and of the
density given in IEC 60704-1:2021, Annex B. The top lies on top of the enclosure without further
fixing. Neither the worktop nor the enclosure may vibrate and emit noise. The down-draft
system is mounted in the worktop in accordance with the manufacturer’s instructions. The rear
side of the CFE shall be oriented to the reflecting wall of the test room.

Figure 103 – Test enclosure for down-draft systems
If the air outlet is located at the rear side of the appliance, an additional 90° bend of the same
type as the standard load shall be used for connection of the CFE to the standard exhaust
system. The appliance (including the test enclosure) is placed in normal position with a
distance of D = 2 × diameter of the duct + 50 mm, but not less than 250 mm between the back
of the enclosure and a vertical wall or plane, directly, without any resilient means other than
those incorporated in the appliance. For rectangular air outlets, the distance is 250 mm.
6.5.5
Replacement:
Wall range hoods shall be mounted in accordance with the manufacturer’s instructions, either
directly or with a mounting board on a vertical wall.
• either at a distance of 0,6 m from the floor of the hard-walled test room or of the special
reverberation test room on one vertical wall and with a minimum of 1 m between any
surface (including protruding parts) of the CFE and the nearest other wall;
• or at a distance of 0,6 m from a horizontal reflecting plane in the free field environment
at the vertical reflecting plane. The minimum size of this vertical plane shall be at
least equal to the size of the projection of the measurement surface. The acoustic
absorption coefficient of the vertical reflecting plane shall be smaller than 0,06 in the
frequency range of interest.
No airborne noise shall be emitted by the mounting board or the vertical wall on which the
appliance is mounted.
6.5.6
Replacement:
CFEs to be built-in are built-in in accordance with the manufacturer’s installation instructions in
an appropriate test enclosure in accordance with IEC 60704-1:2021, Annex B, with a closed
front of the same material and thickness as the test enclosure. The front may be removable
for the assembly of the appliance; see Figure 104. The size of the cabinet shall be as small as
possible according to the manufacturer’s instructions. The bottom of the test enclosure shall
be provided with a base shelf of the same material and thickness as the test enclosure if
necessary for mounting the CFE.
No structure-borne noise shall be transmitted to the test enclosure.
The gap between the appliance and the lower edge of the test enclosure shall be as small as
possible. If an appliance is provided with spacers, strips, or other special means of solid or
resilient material for closing the gap(s) between the contours of the appliance and the cabinet
or enclosure, these means shall be used accordingly. If such means are not provided, wooden
strips shall be used to minimize the gap.
A cut-out at a minimum size shall be provided for the exhaust pipe and power supply. This cut-
out shall be sealed to avoid any noise leakage. If necessary, the test enclosure shall be
provided with ventilation openings in accordance with the manufacturer’s instructions.
The test enclosure with the appliance shall be placed in accordance with 6.5.4 or 6.5.5.
Built-in CFEs in recirculation mode with an air outlet device separated from the air inlet device
shall be built-in in accordance with the manufacturer’s installation instructions in an appropriate
test enclosure with the same material and thickness as that defined in IEC 60704-1:2021,
Annex B. The bottom of the test enclosure shall be provided with a base shelf of the same
material and thickness as the test enclosure if necessary for mounting the CFE.
If the distance between the air inlet and air outlet device is not defined in the manufacturer’s
installation instructions, a minimum of 0,3 m between the outer shapes of the two devices shall
be adhered to. Unless otherwise specified, the opening of the air outlet shall be adjusted
towards the floor.
Any kind of interference shall be avoided between the supports (see Figure 105), the test
enclosure, the air inlet and outlet device and the connecting pipe of the two devices. Static
forces from the supports to the CFE shall also be avoided.

– 16 – IEC 60704-2-13:2023 © IEC 2023

Figure 104 – Test enclosure for built-in appliances
Dimensions in millimetres
Key:
1 resilient means
Figure 105 – Example of standard stand
Addition:
6.5.101
For CFEs with an external fan, the air inlet device shall be located and mounted as described
in 6.5.4, 6.5.5, 6.5.6 or 6.5.102. The external fan shall be located in such a way that the noise
emitted by the housing of the fan and by the air outlet does not influence the measurement
result.
6.5.102
Island range hoods and ceiling range hoods are placed at a distance of D = 1 cm ± 0,5 cm
between the back of the appliance and a vertical wall and supported by a stand with resilient
means (an example is given in Figure 105):
• either at a distance of 0,6 m from the floor of the hard-walled test room or of the special
reverberation test room with the mentioned distance from one vertical wall and with
a minimum of 1 m between any surface (including protruding parts) of the range
hood and the nearest other wall;

• or at a distance of 0,6 m from a horizontal reflecting plane in the free field environment
and with the mentioned distance between the back of the range hood and the
vertical reflecting plane. The minimum size of this vertical plane shall be at least
equal to the size of the projection of the measurement surface. The acoustic
absorption coefficient of the vertical reflecting plane shall be smaller than 0,06 in the
frequency range of interest.
Any kind of interference shall be avoided between the supports and the air intake of the
appliance under test.
Direct contact shall be avoided between the appliance (including protruding parts, worktops,
spacers, etc.) and the vertical reflecting plane.
7 Measurement of sound power levels
7.1 Microphone array, measurement surface and RSS location for essentially free-field
conditions over reflecting plane(s)
7.1.2 Not applicable
7.1.3
Replacement:
For all CFEs, the measurement surface is a parallelepiped with six microphone positions, as
specified in ISO 3744:2010, 7.2.4 and in IEC 60704-1:2021, Figure 2. Additional measurement
positions can be required, in accordance with ISO 3744:2010, 8.1.2. The number of microphone
positions may also be reduced, in accordance with ISO 3744:2010, 8.1.2.
For large appliances and for appliances with directed noise emission, additional measurement
positions can be required.
The preferred value of the measurement distance d is 1 m.
The reference box includes the CFE and the test enclosure. The standard load connected to
a CFE operating in extraction mode should not be taken into account. Pull-out or swing-out
mechanisms of CFEs or suction units of down-draft systems shall be positioned as described
in 6.1.1.
NOTE The x and y axes are located in the vertical reflecting plane, with the x-axis directed vertically upwards and
the front of the appliance directed in the direction of the z-axis.
7.1.4 to 7.1.7 Not applicable
7.4 Measurements
7.4.1
Addition:
The A-weighted time averaged sound pressure level shall be measured over a period of at least
30 s.
– 18 – IEC 60704-2-13:2023 © IEC 2023
8 Calculation of sound pressure and sound power levels
8.1 General
Addition:
Noise emitted by the housing or by the air outlet of an external fan shall be considered as
background noise.
9 Information to be recorded
9.2 Description of appliance under test
9.2.2
Replacement:
Design characteristics: for example chimney, free-standing, island, ceiling, slim-line.
9.7 Electric supply, water supply, etc.
9.7.3 and 9.7.4 Not applicable
9.12 Measurement data
9.12.5 Not applicable
10 Information to be reported
10.3 Test conditions for the appliance
10.3.4 and 10.3.5 Not applicable
10.3.11 Not applicable
10.3.101 Speed setting
10.4 Acoustical data
10.4.10 Not applicable
Annexes
Annex A
(normative)
This annex of IEC 60704‑1:2021 is not applicable.

___________
– 20 – IEC 60704-2-13:2023 © IEC 2023
SOMMAIRE
AVANT-PROPOS . 21
INTRODUCTION . 24
1 Domaine d'application . 25
2 Références normatives . 25
3 Termes et définitions . 25
4 Méthodes de mesure et environnements acoustiques . 28
5 Appareillage . 28
6 Fonctionnement et emplacement des appareils en essai . 29
7 Mesure des niveaux de puissance acoustique . 37
8 Calcul des niveaux de pression acoustique et de puissance acoustique . 38
9 Informations à relever . 38
10 Informations à consigner . 38
Annexes . 39
Annexe A (normative) . 39

Figure 101 – Charge normalisée pour les extracteurs de fumée de cuisine . 31
Figure 102 – Charge normalisée pour les extracteurs de fumée de cuisine à ventilateur
externe . 33
Figure 103 – Enceinte d'essai pour les extracteurs verticaux . 34
Figure 104 – Enceinte d'essai pour les appareils intégrés . 36
Figure 105 – Exemple de banc normalisé. 36

Tableau 1 – Écarts-types des niveaux de puissance acoustique . 28
Tableau 2 – Écarts-types pour la déclaration et la vérification . 28
Tableau 103 – Diamètre de la charge normalisée pour les extracteurs de fumée de
cuisine . 32

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
CODE D'ESSAI POUR LA DÉTERMINATION
DU BRUIT AÉRIEN –
Partie 2-13: Exigences particulières pour les extracteurs de fumée

AVANT-PROPOS
1) La Commission Électrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l'IEC). L'IEC a pour objet
de favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines
de l'électricité et de l'électronique. À cet effet, l'IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et
des Guides (ci-après dénommés "Publication(s) de l'IEC"). Leur élaboration est confiée à des comités d'études,
aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l'IEC, participent également
aux travaux. L'IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon
des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l'IEC concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l'IEC
intéressés sont représentés dans chaque comité d'études.
3) Les Publications de l'IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l'IEC. Tous les efforts raisonnables sont entrepris afin que l'IEC
s'assure de l'exactitude du contenu technique de ses publications; l'IEC ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l'IEC s'engagent, dans toute
la
...