-
Principle, advantages and disadvantages of cross flow fan
Dec 15 , 2021
Cross flow fan was first proposed by French engineer Mortier in 1892. The impeller is multi blade, long cylindrical and has forward multi wing blades. When the impeller rotates, the air flow enters the cascade from the open part of the impeller, passes through the interior of the impeller, and is discharged into the volute from the cascade on the other side to form the working air flow. The flow o...
Read More
-
What is the relationship between starting voltage and cooling fan?
Dec 14 , 2021
With the increasing use of cooling fans, many people are interested in the details of cooling fans. Some people will ask whether the low voltage will affect the cooling fans. Low voltage has no effect on the fan, it will only make the fan rotate at low speed, which can prolong the service life of the fan, but low voltage for a long time may damage the motor. Voltage includes starting voltage and o...
Read More
-
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...
Read More
-
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...
Read More
-
What is the EC fan?
Nov 29 , 2021
The voltage used in electronic products is divided into direct current (DC) and alternating current (AC). Our usual household appliances, such as electric lights, air conditioners, refrigerators, etc., are AC power supply, while we use DC power supply with batteries (such as mobile phones, flashlights, clocks, etc.). In principle, the efficiency of DC cooling fan is higher than that of AC cooling ...
Read More
-
Design Principle of Air Purifier Cooling Fan
Nov 22 , 2021
With the development of society, people's requirements for air quality are getting higher and higher, and the air purifier industry has also developed, and the cooling fan that is a good partner of air purifiers has also developed. Air purifier is a common electrical appliance in people's homes, which is frequently used and easily worn out. In order to prolong the service life of the purifier, a c...
Read More
-
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...
Read More
-
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...
Read More
-
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...
Read More
