Fans - Vocabulary and definitions of categories - Part 1: Vocabulary (ISO 13349-1:2022)

This document defines terms in the field of fans used for all purposes.
It is not applicable to electrical safety.

Ventilateurs - Vocabulaire et définitions des catégories - Partie 1: Vocabulaire (ISO 13349-1:2022)

Le présent document définit les termes dans le domaine des ventilateurs destinés à tous les usages.
Le présent document ne s’applique pas à la sécurité électrique.

Ventilatorji - Slovar in definicije kategorij - 1. del: Slovar (ISO 13349-1:2022)

General Information

Status
Published
Publication Date
14-Nov-2022
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
28-Oct-2022
Due Date
02-Jan-2023
Completion Date
15-Nov-2022

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SLOVENSKI STANDARD
SIST EN ISO 13349-1:2022
01-december-2022
Nadomešča:
SIST EN ISO 13349:2010

Ventilatorji - Slovar in definicije kategorij - 1. del: Slovar (ISO 13349-1:2022)

Fans - Vocabulary and definitions of categories - Part 1: Vocabulary (ISO 13349-1:2022)

Ventilateurs - Vocabulaire et définitions des catégories - Partie 1: Vocabulaire (ISO

13349-1:2022)
Ta slovenski standard je istoveten z: EN ISO 13349-1:2022
ICS:
01.040.23 Tekočinski sistemi in sestavni Fluid systems and
deli za splošno rabo (Slovarji) components for general use
(Vocabularies)
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
SIST EN ISO 13349-1:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 13349-1:2022
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SIST EN ISO 13349-1:2022
EN ISO 13349-1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 01.040.23; 23.120 Supersedes EN ISO 13349:2010
English Version
Fans - Vocabulary and definitions of categories - Part 1:
Vocabulary (ISO 13349-1:2022)
Ventilateurs - Vocabulaire et définitions des catégories
- Partie 1: Vocabulaire (ISO 13349-1:2022)
This European Standard was approved by CEN on 4 September 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13349-1:2022 E

worldwide for CEN national Members.
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SIST EN ISO 13349-1:2022
EN ISO 13349-1:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 13349-1:2022
EN ISO 13349-1:2022 (E)
European foreword

This document (EN ISO 13349-1:2022) has been prepared by Technical Committee ISO/TC 117 "Fans"

in collaboration with Technical Committee CEN/TC 156 “Ventilation for buildings” the secretariat of

which is held by BSI.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by April 2023, and conflicting national standards shall be

withdrawn at the latest by April 2023.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

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

This document supersedes EN ISO 13349:2010.

Any feedback and questions on this document should be directed to the users’ national standards

body/national committee. A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the

United Kingdom.
Endorsement notice

The text of ISO 13349-1:2022 has been approved by CEN as EN ISO 13349-1:2022 without any

modification.
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SIST EN ISO 13349-1:2022
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SIST EN ISO 13349-1:2022
INTERNATIONAL ISO
STANDARD 13349-1
Third edition
2022-09
Fans — Vocabulary and definitions of
categories —
Part 1:
Vocabulary
Ventilateurs — Vocabulaire et définitions des catégories —
Partie 1: Vocabulaire
Reference number
ISO 13349-1:2022(E)
© ISO 2022
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
Contents  Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction .................................................................................................................................................................................................................................v

1 S c op e ................................................................................................................................................................................................................................. 1

2  N ormative references ..................................................................................................................................................................................... 1

3  T erms and definitions .................................................................................................................................................................................... 1

3.1 G eneral terms and definitions .................................................................................................................................................. 1

3.2 F an installation categories according to the arrangement of ducting .................................................. 2

3.3 C lassification of fans according to their development and application ............................................... 3

3.4 C lassification of fans according to their function.................................................................................................... 3

3.5 C lassification of fans according to the fluid path within the impeller ................................................. 6

3.6 C lassification of fans according to operating conditions ............................................................................... 16

3 .7 Fa n element s .......................................................................................................................................................................................... 18

Bibliography .............................................................................................................................................................................................................................21

Index .................................................................................................................................................................................................................................................22

iii
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 117, Fans, in collaboration with the

European Committee for Standardization (CEN) Technical Committee CEN/TC 156, Ventilation for

buildings, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna

Agreement).

This document, along with ISO 13349-2, cancels and replaces ISO 13349:2010, which has been

technically revised.
The main changes are as follows:
— document split into two parts: Vocabulary and Categories;
— this document only retains Clauses 1, 2 and 3;
— classification of terms in Clause 3 revised;
— positions of the illustrations modified;
— editorial errors corrected.
A list of all parts in the ISO 13349 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
Introduction

This document reflects the importance of a standardized approach to the terminology of fans.

The need for an International Standard has been evident for some considerable time. To take just one

example, the coding of driving arrangements differs from manufacturer to manufacturer. What one

currently calls arrangement no. 1 can be known by another as arrangement no. 3. The confusion for the

customer is only too apparent. For similar reasons, it is essential to use standardized nomenclature to

identify particular parts of a fan.

Wherever possible, in the interests of international comprehension, this document is in agreement with

similar documents produced by Eurovent, AMCA, VDMA (Germany), AFNOR (France) and UNI (Italy).

They have, however, been built on where the need for amplification was apparent.

Use of this document will lead to greater understanding among all parts of the air-moving industry.

This document is intended for use by manufacturers, consultants and contractors.
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
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SIST EN ISO 13349-1:2022
INTERNATIONAL STANDARD ISO 13349-1:2022(E)
Fans — Vocabulary and definitions of categories —
Part 1:
Vocabulary
1 S cope
This document defines terms in the field of fans used for all purposes.
It is not applicable to electrical safety.
2  Normat  ive references
There are no normative references in this document.
3  T erms and definitions

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1  Gener  al terms and definitions
3.1.1
fan

rotary-bladed machine that receives mechanical energy and utilizes it by means of one or more

impellers fitted with blades to maintain a continuous flow of air or other gas passing through it and

whose work per unit mass does not normally exceed 25 kJ/kg

Note 1 to entry: The term “fan” is taken to mean the fan as supplied, without any addition to the inlet or outlet,

except where such an addition is specified.

Note 2 to entry: Fans are defined according to their installation category, function, fluid path and operating

conditions.

Note 3 to entry: If the work per unit mass exceeds a value of 25 kJ/kg, the machine is termed a turbocompressor.

This means that, for a mean stagnation density through the fan of 1,2 kg/m , the fan pressure does not

exceed 1,2 × 25 kJ/kg, i.e. 30 kPa, and the pressure ratio does not exceed 1,30, since atmospheric pressure is

approximately 100 kPa.
3.1.2
non-driven fan
bare shaft fan
fan without motors, drives, attachments or accessories
3.1.3
driven fan
fan driven by an electrical motor

Note 1 to entry: One or more impellers fitted to or connected to a motor with a stationary element, with or

without transmission or variable speed drive
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
3.1.4
stand-alone fan
fan used as a unique entity and not integrated into any other product
Note 1 to entry: The fan can have ducting connected to its inlet and outlet.
3.1.5
standard air
air with a density of 1,2 kg/m
3.2  F an installation categories according to the arrangement of ducting
3.2.1
installation category A
installation with free inlet and free outlet with a partition
Note 1 to entry: See Figure 1.
a)   Category A b)   Category B
c)   Category C d)   Category D e)   Category E
Figure 1 — Installation categories
3.2.2
installation category B
installation with free inlet and ducted outlet
Note 1 to entry: See Figure 1.
3.2.3
installation category C
installation with ducted inlet and free outlet
Note 1 to entry: See Figure 1.
3.2.4
installation category D
installation with ducted inlet and ducted outlet
Note 1 to entry: See Figure 1.
3.2.5
installation category E
installation with free inlet and free outlet without a partition
Note 1 to entry: See Figure 1.
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
3.3  Classification   of fans according to their development and application
3.3.1
custom-designed fan
fan developed and produced for one single application
3.3.2
standardised fan

fan whose detailed performance is widely available in an electronic and/or printed catalogue and which

is frequently manufactured in quantity
Note 1 to entry: Sometimes known as a series-produced fan.
3.4  Classification   of fans according to their function
3.4.1
ducted fan
fan used for moving air within a duct
Note 1 to entry: This fan can be arranged in installation category B, C or D.
3.4.2
partition fan

fan used for moving air from one free space to another, separated from the first by a partition having an

aperture in which or on which the fan is installed

Note 1 to entry: This fan can be arranged in installation category A (see Figure 2).

Flow of air.
Figure 2 — Partition fans
3.4.3
jet fan
fan used for producing a jet of air in a space and unconnected to any ducting

Note 1 to entry: The air jet can be used, for example, for adding momentum to the air within a duct, tunnel or

other space, or for intensifying the heat transfer in a determined zone.
Note 2 to entry: See Figure 3.
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
Flow of air.
Figure 3 — Jet fan
3.4.4
circulating fan

fan used for moving air within a space which is unconnected to any ducting in installation category E

Note 1 to entry: See Figure 4.
a)   Circulating fan head b)   Ceiling fan
Figure 4 — Circulating fans
3.4.5
air curtain unit
air-moving device which produces an air curtain
Note 1 to entry: See Figure 5.
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
Key
1 air curtain unit
2 outlet nozzle
3 air curtain
Flow of air.
Figure 5 — Illustration of an air curtain and air curtain unit
3.4.6
air curtain
airstream

directionally controlled airstream, moving across the entire height and width of an opening, which can

reduce the infiltration or transfer of air from one side of the opening to the other, and inhibits insects,

dust or debris from passing through
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
3.5  Classification   of fans according to the fluid path within the impeller
3.5.1
classification of fan type

determination of the type of fan based on the geometry of the impeller and the resulting fluid path

through or past the impeller
Note 1 to entry: See Figure 6.

Note 2 to entry: Fan types are identified by the angle α, the average value of the angles α1 and α2 (see Figure 6):

α = (α1 + α2)/2

Note 3 to entry: The angle α1 is the angle of the tangent at the hub at the intersection of the blade-trailing edge

with the hub. The angle α2 is the angle of the tangent at the shroud or at the outer diameter of the blade at the

intersection of the blade-trailing edge with the shroud or with the outer diameter of the blade. If the hub and/or

shroud are not axisymmetric, angles α1 and α2 are the average values in circumferential direction. The fan types

are defined in Table 1.

Table 1 — Fan type defined by the relationship of the blade and the shroud or hub

Fan type Angle α
Axial fan α < 20°
Mixed-flow fan 20° ≤ α < 70°
Centrifugal fan 70° ≤ α
a)   Centrifugal fan b)   Mixed-flow fan c)  Axial fan
Inflow.
Outflow.
Axis of rotation.
Figure 6 — Differentiation by angles

Note 4 to entry: Classification of centrifugal fans includes "centrifugal radial bladed fan" (including radial tip),

"centrifugal forward-curved fan" and "centrifugal backward-curved fan" (including backward-inclined and

backward-curved aerofoil bladed fans).
© ISO 2022 – All rights reserved
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SIST EN ISO 13349-1:2022
ISO 13349-1:2022(E)
3.5.2
axial fan

fan in which the air enters and leaves the impeller along essentially cylindrical surfaces coaxial with

the fan
...

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