EN ISO 13351:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Industrijski ventilatorji - Mere (ISO 13351:1996)Ventilateurs industriels - Dimensions (ISO 13351:1996)Industrial fans - Dimensions (ISO 13351:1996)23.120QDSUDYHVentilators. Fans. Air-conditionersICS:Ta slovenski standard je istoveten z:EN ISO 13351:2008SIST EN ISO 13351:2009en01-april-2009SIST EN ISO 13351:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 13351October 2008ICS 23.120 English VersionIndustrial fans - Dimensions (ISO 13351:1996)Ventilateurs industriels - Dimensions (ISO 13351:1996)This European Standard was approved by CEN on 2 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 13351:2008: ESIST EN ISO 13351:2009

INTERNATIONAL STANDARD IS0 13351 First edition 1996-06-15 Industrial fans - Dimensions Ven tila teurs indus tie/s - Dimensions Reference number IS0 13351:1996(E) SIST EN ISO 13351:2009

IS0 13351:1996(E) Foreword IS0 (the International Organization for eration of national standards bodies preparing International Standards is technical committees. Each membe Standardization) is a worldwide fed- IS0 member bodies). The work of normally carried out through IS0 body interested in a subject for which a technical committee has been established has the right to be rep- resented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 col- laborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are cir- culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 13351 was prepared by Technical Committee ISOfTC 117, Industrial fans. 0 IS0 1996 All rights reserved. Unless otherwise specified, no part of this publication may be repro- duced or utilized in any form or by any means, electronic or mechanical, including photo- copying and microfilm, without permrssion in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneva 20 l Switzerland Printed in Switzerland ii SIST EN ISO 13351:2009

@ IS0 IS0 13351:1996(E) Introduction This International Standard gives details of circular and rectangular flanges as well as specifying “fan size designation”. For circular flanges, the values specified in IS0 6580:1981, General purpose industrial fans - Cir- cular flanges - Dimensions are retained for the next five years in parallel with those given in table 2 of this International Standard. Though not constraining a manufacturer’s choice of flange details, this In- ternational Standard provides the opportunity for interchangeability and therefore a reduction in technical obstacles to free trading. Throughout this International Standard, the principal dimensions are based on the rounded values of “preferred” numbers given in IS0 497. SIST EN ISO 13351:2009

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~~ INTERNATIONAL STANDARD @ IS0 IS0 13351:1996(E) Industrial fans - Dimensions 1 Scope This International Standard specifies size designations for industrial fans and specifies dimensions for the cir- cular and rectangular flanges of general purpose in- dustrial fans as defined in 3.1 .I. It does not apply to cross-flow fans, or fan appliances used for household or similar applications. For circular flanges, this International Standard pro- vides two different flange series, one for standard casing thicknesses and a second for heavy duty fans as used on board sea-going vessels or in heavy indus- try. In order not to restrict fan designs unduly, only the pitch diameter, hole numbers and hole diameters are standardized. Flange thickness as well as internal and external flange diameters can be chosen freely within the limits of good engineering practice. IS0 13349:- I), Industrial fans - Terminology. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of this International Standard, the definitions given in IS0 13349 and the following defi- nitions apply. 3.1.1 general purpose industrial fan: Fan for which the flange dimensions conform to those given in fig- ure 4 and table 2. 3.1.2 heavy duty fan: Fan for which the flange di- mensions are greater and conform to those given in figure 4 and table 3. 3.1.3 nominal impeller tip diameter, D: Diameter of the impeller tip on which the design of the fan is based. 2 Normative references 3.2 Symbols and abbreviations The following standards contain provisions, which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreement based on this International Standard are encouraged to investi- gate the possibility of applying the most recent edi- tions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid Inter- national Standards. IS0 3:1973, Preferred numbers - Series of preferred numbers. IS0 497: 1973, Guide to the choice of preferred num- bers and of series containing more rounded values of preferred numbers. For the purposes of this International Standard, the following symbols and abbreviations apply: D dl d2 d3 d4 e g 1 N a nominal impeller tip diameter (see figures 1, 2 and 3) actual impeller tip diameter (see figures 1, 2 and 3) pitch circle diameter hole diameter bolt diameter washer diameter casing thickness hole offset arc length between bolt holes number of holes angle between bolt holes 1) To be published. SIST EN ISO 13351:2009

IS0 13351:1996(E) Figure 1 - Impeller of a Figure 2 - Impeller of an Figure 3 - Impeller of a centrifugal fan axial-flow fan mixed-flow fan 4 Required characteristics Table 1 - Fan sizes 4.1 General This International Standard adopts the Renard R 20 Series as given in IS0 497 as the nominal dimensions for impeller tip diameters, inside diameters of circular flanges and the inside lengths of the sides of rectan- gular flanges. It takes into account the maximum casing thicknesses likely to be used for general pur- pose industrial fans as well as typical manufacturing tolerances representative of “good practice”. The dimensions of circular and rectangular flanges are given in sizes which correspond to nominal diameters from 100 mm to 2 000 mm. In many cases, in the smaller sizes, below about 200 mm,
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