IEC 61591:2023 CMV包含官方标准及其注释版本。注释版本为您提供了一种快速简单的方法来比较IEC 61591:2023版3.0和之前的IEC 61591:2019版2.0之间的所有更改。此外，还提供了IEC SC 59K专家的意见，以解释最相关变更的原因，或澄清内容的任何部分。 IEC 61591:2023适用于位于家庭厨房的带有用于再循环或抽气模式的风扇的烹饪排烟器。它也可用于烹饪排烟器，其中风扇与设备分开安装，但当风扇在技术文件（例如铭牌数据）和安装说明中定义时，由设备控制。本文件还涉及向下-布置在烹饪器具旁边、后面或下面的通风系统。本文件定义了用户感兴趣的这些电器的主要性能特征，并规定了测量这些特征的方法。本文件未指定性能的分类或排名。本文件不涉及符合IEC 60335-1和IEC 60335-2-31的安全要求。EN 13141-3涵盖了由中央通风系统操作的没有风扇的烹饪排烟器。这第三版取消并取代了2019年出版的第二版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)工作点的新定义，见3。19; b)最低设置和自动设置的新定义，见3.17和3.18； c)修改后的安装和定位要求，见6.2； d)为压力补偿室的规格增加了标准参考ISO 5801，参见条款10； e)用于确定体积气流和流体动态效率的单独条款，参见条款10和11； f)确定流体动态效率的新方法（“9点计算”）； g)关于低功率模式测量的新定义、新条款和新附件B； h)新的附件a:参数b的假设。

IEC 61591:2023 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 61591:2023 edition 3.0 and the previous IEC 61591:2019 edition 2.0. Furthermore, comments from IEC SC 59K experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content.

IEC 61591:2023 applies to cooking fume extractors incorporating a fan for the recirculation or extraction mode situated in a household kitchen. It can also be used for cooking fume extractors where the fan is mounted separately from the appliance, but controlled by the appliance when the fan is defined in the technical documentation (e.g. name plate data) and instructions for installation. This document deals also with down-draft systems arranged beside, behind or under the cooking appliance. This document defines the main performance characteristics of these appliances, which are of interest to the user, and specifies methods for measuring these characteristics. This document does not specify a classification or ranking for performance. This document does not deal with safety requirements that are in accordance with IEC 60335-1 and IEC 60335-2-31. Cooking fume extractors without fans operated by a central ventilation system are covered in EN 13141-3. This third edition cancels and replaces the second edition published in 2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) new definition of working point, see 3.19;
b) new definition for lowest setting and automatic setting, see 3.17 and 3.18;
c) revised requirements for installation and positioning, see 6.2;
d) added a normative reference ISO 5801 for the specification of the pressure compensation chamber, see Clause 10;
e) separate clauses for determining the volumetric airflow and fluid dynamic efficiency, see Clauses 10 and 11;
f) new approach for determining the fluid dynamic efficiency ("9-point calculation");
g) new definitions, new clause and new Annex B regarding the measurement of low-power modes;
h) new Annex A: assumption for the parameter b.