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Why is RPM IMPORTANT FOR DC fans?
Date：2020/4/20 Views：1941 【BACK】
Many manufacturers choose DC fan manufacturers, first consider the use of the environment and needs of what characteristics, and then according to these standards to find their own fans, what RPM stands for, hOW IMPORTANT IS RPM? One way to determine whether a DC fan is properly designed and whether the motor can operate with a minimum temperature rise is to calculate the ratio of fan speed (RPM) to fan efficiency. The General Industry Standard for speed increase of 10% , the power consumption needs to increase 30% , a well-designed DC fan, speed increase of 10% , the consumption needs to always be less than 30% , otherwise the motor will enter the saturation drive state. In order to maintain the RPM / W standard, it is necessary to increase the size of the silicon steel sheet or reduce the PQ value, which will increase the cost of the product, otherwise the operating temperature of the motor will be too high will greatly reduce the life of the product. The above can reflect the impact of good DC fan performance on the cost of electricity, reflects the lowest motor operating temperature (with the input power positive example) on the impact of the fan, and motor operating temperature and product life is inversely proportional. In particular, according to industry standards, an increase of 10 °C in the operating temperature of the motor reduces the product life by 1 / 2. That's why RPM is so important for DC fans. We can customize it according to our customers'special requirements. If you want to know more about DC FANS, please click:http://www.dxymotors.com
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