T/ZZB 2422-2021 Internal circulation axial fan for refrigerator
T/ZZB 2422-2021 Internal circulation axial fan for refrigerator
Basic Information
Scope
Main technical content: This document specifies the terms and definitions, types and parameters, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, and quality commitments for internal circulation axial flow fans used in refrigerators. This document applies to internal circulation axial flow fans used in refrigerators powered by AC or DC power supplies, with a DC brushless motor, an input power of no more than 40W, a fan blade diameter of no more than 254mm, and a fan blade angle of no more than 34° (hereinafter referred to as fans). This document also applies to internal circulation axial flow fans used in display refrigerators, medical refrigerators, and other similar products.