| 田 宏1， 侯 宏1， 杨建华1， 方献良2， 诸永定2 |
（1. 西北工业大学,陕西 西安 710072； 2. 宁波方太厨具有限公司，浙江 慈溪 315300） |
 摘要：某种油烟机工作时会出现“突突声”和“啸叫声”的异音，对其辐射噪声进行了测量和频谱分析，结果表明在叶轮旋转频率或者轴频及其谐波附近能量集中，听觉试验证明这些线谱是此类异音的来源，其根源在于叶轮的不平衡或不良装配。它们可以作为油烟机异音故障的判别特征之一，用实际测量数据进行了故障诊断，结果与听音员判断结论一致。 |
| 关键词：油烟机；异音；故障诊断；线谱特征 |
| 中图分类号：TB52 文献标识码：A 文章编号：1000-8829(2008)05-0087-03 |
| Analysis of Abnormal Sound from Impeller/Blade of a Range Hood and its Diagnosis |
| TIAN Hong1, HOU Hong1, YANG Jian-hua1, FANG Xian-liang2, ZHU Yong-ding2 |
| （1. Northwesten Polytechnical University,Xi’an 710072,China； 2. Ningbo Fotile kitchen ware Co., LTD.,Ningbo 315300,China） |
| Abstract：An abnormal sound similar to tooting or whistling from a range hood is noticed. Frequency spectrum analysis of sound radiation shows that there is a notable discrete spectrum near the axis frequency and circle frequency for these machines with abnormal sound.It is affirmed by auditory test that the abnormal sound,due to the impeller fault itself or the bad machine assembling,can be effective feature for fault diagnosis of a range hood.Tests of fault diagnosis are performed and the results are substantial agreement with that of professional listener. |
| Key words：range hood;abnormal sound;fault diagnosis;discrete spectrum |
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