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TaiWan SAN JU International Electrical Machinery CO.,LTD.Shenzhen Sanju Electric Machinery Co.,LTD.Sanju Technology and electrical machinery CO.,LTD.

Discussion on Design and Selection of Cooling Fan

Back to list Release date: Sep 11, 2018

At present, the application field of the cooling fan has been quite extensive, but many purchasers do not know about its fan, and it is easy to enter into the mistaken selection of cooling fan, and at the same time, it also causes mistakes in work and even defects in products. Many engineers in the cooling fan factory know that the scientificity of fan selection will affect the quality of the product and must fully consider the reliability, economy and feasibility of the product. This is why we need to understand the characteristics of the fans.In order to improve our understanding of the cooling fans, the following San Ju motors from Taiwan will explain the design and selection of the cooling fans:

Factors Influencing the Characteristics of Cooling Fan

First, size:affects price and noise ( installation method and size should be considered )

Second, voltage:affect price and design

Third, life span:affecting price and reliability ( design life span, service environment, etc.should be considered )

Fourth, air volume:affects heat dissipation effect, noise and price ( static pressure, allowance, environmental temperature rise, temperature control, etc.)

Fifth, bearings:affect the price and reliability and should fully consider the actual use environment ( high temperature, high humidity, vibration, dust, dust emission, noise, etc.)

In the design and selection, if suppliers cooperate and consider suggestions from various parties, the design will be simplified, and at the same time, it will not design a part that cannot be found or is in short supply like many engineers, thus shortening the development cycle, saving costs and improving reliability.

Scheme 1:Work in a dust-free cooling fan. He must take into account the amount of dust emitted.The dust in the fan department is mainly caused by the volatilization of lubricating oil in the bearings.At this time, ball bearings with less oil content should be selected as far as possible and the rotation speed should be reduced as far as possible when the air volume is satisfied.

Scheme 2:The cooling fan working in the communication cabinet must take into account the power supply voltage, dust in the environment, temperature rise and service life.At this time, the ball bearing cooling fan should be used as much as possible.

Scheme 3:The power supply cooling fan working on the locomotive must take into account the temperature rise, service life and vibration of the environment, and the ball bearing should be selected under the condition of meeting the vibration, but the oil bearing should be selected as far as possible under the condition of vibration to meet the reliability requirements.

Scheme 4:For fans working in the intensive care unit, noise must be taken into account.At this time, large size should be considered as much as possible. Low noise, oil bearing.

In the actual design and selection, there are quite a lot of problems to consider.The cases given above are relatively shallow, so it is suggested that you should try your best to guide by professional fan suppliers.


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