It is a normal phenomenon for Roots blowers to generate heat during operation, and the main causes of heat generation include the following aspects:
1、 Heat generated by mechanical friction
Roots blower belongs to gear speed increasing type blower, which contains multiple mechanical components such as bearings, belts, reducers, etc. inside. These components generate friction and heat during the operation of the fan. This frictional heat is a major cause of fan heating. To reduce this heat, the following measures can be taken:
1. Reasonably reduce the speed of the fan to minimize friction between mechanical components.
2. Optimize the lubrication of bearings by using appropriate lubricating oil or grease to reduce friction and wear of the bearings.
3. Regularly replace worn belts to maintain belt tension and transmission efficiency.
2、 Heat generated by gas compression
During the process of conveying gas, Roots blower compresses and forcibly outputs the gas. During this process, the gas is subjected to compression and shear forces, which convert a portion of its kinetic energy into thermal energy, resulting in an increase in gas temperature. This is also an important reason for the increase in air temperature at the outlet of the fan. To reduce this heat, the following measures can be taken:
1. Optimize the design of the fan to improve compression efficiency and reduce energy loss during the compression process.
2. Install a radiator at the outlet of the fan and use cooling elements such as fins or fans to dissipate heat into the air.
3. Reduce the inlet temperature of the fan, for example, by adding an inlet filter or lowering the ambient temperature to reduce the temperature of the inlet gas.
3、 Heat generated by the operating environment
During the operation of a Roots blower, the inner surface of its casing comes into contact with the airflow and absorbs heat. However, the outer surface of the casing is exposed to the environment, and if the ambient temperature is high or the ventilation is poor, the temperature of the casing will also increase accordingly. To improve this situation, the following measures can be taken:
1. Maintain good ventilation in the fan room to promptly dissipate heat.
2. Install air conditioning or ventilation equipment in the fan room to reduce ambient temperature and improve ventilation conditions.
4、 Other factors
In addition to the three main reasons mentioned above, there are also some other factors that may cause the Roots blower to heat up, such as:
1. The internal clearance of the fan is too large or too small, resulting in increased friction or gas leakage between mechanical components, thereby generating more heat.
2. Tight fitting of bearings or tight meshing of gears can also increase friction and generate more heat.
3. Improper use of lubricating oil or grease, such as too much, too little, too thick, or too dirty, can affect the lubrication effect of bearings and gears and increase frictional heat.
4. In order to reduce the overall temperature of the Roots blower and extend its service life, it is necessary to comprehensively consider the above factors and take corresponding measures for improvement and optimization. At the same time, regular maintenance and upkeep of the fan are required during use to promptly identify and address potential problems and malfunctions.
