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Root cause and diagnosis of vibration of precision air conditioning fan in machine room

There should be a qualified mechanical technician (or, hire a contract mechanical technician) on the data center staff. Should be responsible for the successful operation of the data center, this must consider the need to pay attention to the issues. For example, the fan of the refrigeration unit in the computer room is a machine and equipment that is very prone to problems.
Simply put, if the computer room air conditioning does not blow out the gas, obviously, is wrong. However, in the protection of the computer room air conditioning unit, should also pay attention to the subtle sound changes.
A refrigerant or liquid precision air conditioner includes many components, including the cooler electromagnetic coil, refrigeration compressor, air humidifier and fan. We're going to put our weight on the fan.
The fan is a mounted rotating cutter head that may or may not have a closed case. A fan may be a fan or an exhaust system device. A fan is a fan that blows gas into a hose, working pressure room, room, or other indoor space. An exhaust fan is a fan that pulls gas out of a room. We're going to put the weight on the blower.
Do you hear or feel abnormal vibration and noise coming from the central air-conditioning unit in your computer room? The following are details of fan vibration and noise problems and how to correct them in time. Once again, only a very small number of qualified mechanical technicians can do the final diagnosis and maintenance.
Vibration of fan is a common fault commonly used in operation. Vibration of fan can also cause rolling bearing and leaf destruction, screw loosening, shell and duct destruction, etc., which seriously endangers the safe operation of fan. There are many reasons for fan rolling bearing vibration exceeding the standard. If appropriate treatment methods can be adopted according to different phenomenon analysis, unexpected effects can usually be achieved.

(1) Centrifugal impeller, rolling bearing, coupling, or V-belt wheel has not been corrected. Repair note: Release pressure, line up the above parts or tighten the machine equipment.
(2) Unstable basic or wood flooring often means a poor quality design scheme. Repair note: You may need to re-gradually provide a firm, level mounted surface.
(3) Check the raw materials outside the unbalanced fan. Many repairmen will find something sticking to the fan sound card frame. Repair Note: Remove the object and see if it is damaged.
(4) Rolling bearing damage is difficult to diagnose, but noise or rotation problems are significant indicators of problems. Repair indicates: replace the rolling bearing and shaft rod.
(5) Centrifugal impeller or motor damage. Repair attention: Regular inspection and repair by qualified professionals.
(6) Old or scattered anchor bolts or screws. Repair note: tighten replacement new.
(7) shaft deformation or rotation shaft damage. The big question is why this happened. Repair note: Replace.
(8) The centrifugal impeller or rotating shaft is not balanced. Repair note: Balance.
(9) The fan transmission reaches the rated current. Fix: Reduce the fan speed ratio.
(10) The fan speed is high or the fan direction is incorrect. Repair indicates: Reduce fan speed or correct fan direction.
(11) Check the vibration sent to the fan from somewhere other than the fan. Repair attention: vibration protection or maintenance.
(12) Damage is a common situation in the fan. The vibration of the fan is slow and high in the operation process. It is generally caused by leaf damage and balanced destruction. At this time to solve the problem of fan vibration is generally done in the boiler after blowing pipe dynamic balance.
Every data center's equipment should be in good condition. Daily, weekly, monthly, quarterly, and yearly checks should be designed with select plates to ensure the scalability of the data center. Every person who goes to the data center should bear the normal use time, and report the abnormal problem in time. Fully ensure the efficient and secure operation of data centers.

How is the cooling efficiency of industrial cold air mechanism in Ningbo workshop?

Now many factory workshops have installed industrial air cooler in Ningbo workshop, to solve the hot difficulties of industrial workshops caused by hot summer temperature. Hot summer can also lead to the workshop staff work efficiency is very low. And Ningbo workshop industrial cold air function with very low cost to deal with industrial plant workshop cooling natural ventilation difficulties, Ningbo workshop industrial air cooler for 100 square meters of total area cooling natural ventilation for 1 hour, only 1 degree of electricity. So it's liked by a lot of companies.
But also because of the cooling cost of Ningbo workshop industrial air cooler is very low, in the same total area of the same condition, Ningbo workshop industrial air cooler cooling price is lower than the fan. But it is precisely this reason, which leads to a lot of companies for his cooling effect of the actual production of suspicion, so low electricity consumption, whether the cooling effect is not good? In fact, this is not the case. The actual cooling effect of industrial air cooler in Ningbo workshop can achieve a rapid reduction of 4-10 degrees, and under the premise of cooling, it can also play a ventilation effect.
Ningbo workshop industrial air cooler can often do so energy-saving, because of its special cooling method, Ningbo workshop industrial air cooler is not the same as traditional air conditioning, this person is to choose the basic principle of water evaporation heat absorption to cool natural ventilation, as hot summer standing in a place with water, will feel a little cooler, because of the water evaporation, Digest and absorb the heat in the air, so the ambient temperature will be a little lower. There are four cooling water curtains in the industrial air cooler in the Ningbo workshop, which can increase the contact surface of gas and water, so that the cooling effect is better.
Industrial cold air mechanism cooling efficiency of Ningbo workshop:
The more the air volume of the first row, the faster and faster the number of air changes, the heat flow in the room has not been formed by the cold air of the industrial cooler in the Ningbo workshop.
The greater the density of the second cooling water curtain, the centrifugal pump in the work of the water is uniform, Ningbo workshop industrial air cooler filtered gas will be more complete, more cool.
Third, the cooler the water temperature, the cooler the wind is blowing in the Ningbo workshop, the greater the refrigeration efficiency.
Ningbo workshop industrial air cooler exhaust mode: Ningbo workshop industrial air cooler uses natural ventilation technology of axial flow fan. When the axial flow fan works, the engine promotes the fan impeller of the industrial air cooler in the Ningbo workshop to rotate in the cylindrical shell. The steam body enters from the collector, gets kinetic energy according to the centrifugal impeller, improves the pressure rate, and then is discharged along the radial direction. The axial fan is arranged in three forms: column type, vertical type and deflection type. The diameter of small impeller is only 100mm up or down, and the large one can reach about 20 meters. Axial fan Ningbo workshop industrial air cooler.
Large and medium-sized low voltage axial flow industrial air cooler is composed of centrifugal impeller, shell and collector and other parts, generally installed on the wall or roof of the building; The large and medium-sized high pressure axial fan is composed of a collector, a centrifugal impeller, a streamlined body, a shell, a spreading cylinder and a mechanical component. Leaves are evenly set on the ring, the number is generally 2 ~ 24. The bigger the leaves, the more air pressure; Blade installation Angle is generally 10° ~ 45°, the more installation Angle, the more exhaust air volume and air pressure. Most important parts of industrial air cooler with iron plate welding or riveting synthesis.
There are exactly three types of air discharge method of industrial air cooler in Ningbo workshop.
The first type of industrial air cooler under the air: when the construction must be placed on the outdoor wall. The ventilation duct bends down and leads into the room. The second type of industrial air cooler: this type is easy to install and operate. When the site facilities are not changed, the Ningbo workshop industrial air cooler can be thrown on the ground, the air outlet is above the body, the ventilation duct is bent to the room, which is called the air out. The third type of measured wind: Ningbo workshop industrial air cooler this kind of air outlet method is relatively less used, the meaning of side air outlet is to one side air outlet. Most of these devices are used to move parts of a room to cool down. Therefore, you can choose the most suitable air outlet method according to your specific place, Ningbo workshop industrial air cooler