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Does the DC cooling fan have an impedance protection function?
Oct 19 , 2021
DC cooling fan is an important cooling equipment for modern industrial machinery. Its basic structure is generally composed of motors, bearings, blades, housing (including fixing holes), power plugs and wires. The motor is the core of the DC cooling fan. It is generally composed of a stator and a rotor. The stationary part of the motor is called the stator, and the part that rotates when it is run...
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What are the main reasons for the noise sources of fans?
Oct 26 , 2021
Noise is a kind of noise that makes people feel noisy and boring, and its degree sometimes varies with people's mood. But continuous noise will also pollute the surroundings. The causes of noise generated by general cooling fans can be divided as follows: 1. Noise caused by blade rotation When the blade rotates, it will generate friction or impact with the air. High rpm exhaust fan, the faster the...
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How to judge the cooling performance of the cooling fan?
Nov 03 , 2021
Cooling fan can be selected from the main parameters such as bearing, airflow, pressure, size, motor and so on. What are the specific factors that will affect the performance of the cooling fan? How do we judge whether it is a high performance cooling fan? 1. Related to the bearing used by the cooling fan The most commonly used bearings for cooling fans are sleeve bearings and ball bearings. Sleev...
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Is the service life of the DC fan affected by the environment?
Nov 09 , 2021
In daily life, in order to extend the service life of DC fans and reduce the cost of equipment loss, we will regularly inspect and maintain the DC fans in mechanical equipment. However, as the seasons change, the surrounding ambient temperature will change accordingly. In spring and autumn, the temperature is suitable, the winter is bitterly cold, and the summer is scorching, so is the service lif...
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What are the causes of fan noise?
Nov 17 , 2021
The following analysis of the causes of fan noise: Fan discrete noise (rotating noise): It is related to the rotation of the impeller. In particular, the noise of high flow exhaust fan is particularly prominent under the condition of high speed and low load. Discrete noise is caused by the interaction between the asymmetric structure around the blade and the circumferential uneven flow field forme...
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How to reduction the noise of fan in design?
Nov 17 , 2021
The specific noise reduction methods of the fan are as follows: (1) Enhance the aerodynamic load of the cascade and reduce the circumferential speed For the axial cooling fan, strong forward blades are used, and the multi blade impeller is beneficial to increase the aerodynamic load of the cascade. Under the same air volume and pressure, the circumferential speed on the outer circle of the impelle...
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Characteristics and advantages of EC cooling fan
Nov 29 , 2021
The more commonly used brushless cooling fans are divided into EC, DC, AC, etc. Among them, EC fans are DC fans, and EC cooling fans convert AC to DC. In addition to DC voltage power supply, AC voltage can also be used for power supply. The voltages of 12V, 24V, 48V, 110V, 220V, 380V are universal, without conversion. 1. The EC fan breaks the frequency limitation of the traditional AC fan, and can...
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What is the difference between the 2-Pin, 3-Pin, and 4-Pin of the cooling fan?
Dec 08 , 2021
Types of cooling fans: 2-Pin, 3-Pin, 4-Pin There are many classification methods for cooling fans, including DC and AC, brush and brushless cooling fan, sleeve bearing and ball bearing cooling fan. We are mainly talking about the power line connectors of cooling fans, which can be divided into 2-pin, 3-pin, and 4-pin. 2-Pin fan: simple structure, but can't measure speed Generally, if there ar...
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