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IP Protection Level of Cooling Fan
Jun 01 , 2021
Cooling fans are widely used, and their application environments are different. In harsh environments, such as outdoors, damp and dusty places, cooling fans are generally equipped with waterproof grade, that is, IPXX. IP is the abbreviation of Ingress Protection, and IP grade is the protection grade against foreign body intrusion of electrical equipment shell, which comes from IEC 60529, the stand...
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Introduction of some related knowledge about cooling fan noise
Jun 11 , 2021
How to measure the noise of cooling fan? What are the main factors related to the noise generated by cooling fans? How should we reduce the noise of cooling fans? 1、How to measure the noise of cooling fan? Noise is the sound level generated by the cooling fan during operation, and its unit is decibel (dB). Quiet cooling fan, when measuring the noise of the cooling fan, it needs to be carried out i...
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What are the reasons for slowing down the speed of DC fans?
Jun 17 , 2021
With the development of Internet information age, Industrial DC fans, Cooling fans, Cross flow fans and AC fans have been applied in many industries, such as household appliances, industrial equipment, electronic equipment, medical aviation and so on. Have you ever encountered such a situation? When the fan is used, the speed of the fan can meet the cooling requirements of the equipment, but when ...
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Structure of Cross Flow Fan
Jun 22 , 2021
Generally, a cross flow fan has a multi-blade, long cylindrical impeller with forward multi-wing blades. At present, our cross flow fans are mainly divided into two types: AC cross flow fans and DC cross flow fans. Cross flow cooling fan has a complicated internal structure. Although its impeller circumference is symmetrical, its airflow activity is asymmetrical, and its relative velocity field an...
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Material and Structure of DC Fan
Jun 28 , 2021
DC axial fan is made of PBT material. When it is working normally, the service life can be as high as 50,000 hours. The internal structure of the DC has a transformer and a main control board, which will not be affected by voltage fluctuations, so it is used Longer life. High speed axial fan, its rotor contains DC cooling fan blades, which are the source of air activity, the fan axis, and are used...
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Cooling Fan - Working Principle of AC & DC Fan
Jul 22 , 2021
Working principle of AC fan: The difference between AC axial fan and DC axial fan is that the former power supply is AC, the power supply voltage is negatively altered, the fan power supply voltage is fixed, and the circuit control must be rely on circuit control, so that the two sets of coils will work to produce different magnetic fields. AC cooling fan is fixed due to the power supply frequency...
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What is the main reason for the imbalance of the impeller
Jul 27 , 2021
During the use of the impeller of AC & DC cooling fans, the causes of imbalance can be briefly divided into two types: wear of the impeller and fouling of the impeller. These two situations are related to the dust removal device connected in front of the induced draft fan. The dry dust removal device causes the impeller imbalance mainly due to wear; while the wet dust removal device affects th...
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Advantages of DC Brushed DC Motor Compared with DC Brushless Motor
Aug 04 , 2021
1. Simple structure and mature technology DC brushed motor has simple structure, easy production and processing, convenient maintenance, and easy control. The DC motor also has a fast response, large starting torque, and can provide rated torque performance from zero speed to rated speed. 2. Fast response speed and large starting torque DC brushed motor has a fast starting response speed, large st...
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