Cabinet air conditioning knowledge sharing

Fan heat dissipation is usually used in the control cabinet, the air duct of the electrical control cabinet should be designed reasonably, all the air inlet should be covered with dust screen, and the exhaust air is smooth, to avoid the formation of eddy currents in the cabinet and the formation of dust accumulation in the fixed position, and the fan installation should pay attention to the shockproof problem. The usual solution is to install exhaust fans on the electrical cabinet to achieve cooling, but when the fan works, the outside dust, oil and harmful gases will also enter the electrical cabinet, be electrostatic adsorption on the circuit board surface, accumulate over time, will cause corrosion of the chip components and printed lines, and affect the heat dissipation of the components. The accumulated dust will also cause a short circuit in the high-pressure part of the circuit board after being damp. The longer the working time of the electric cabinet, the more prominent the above problems, and the accumulation to a certain extent will cause the sudden failure of the control part.

The air conditioning of the electric cabinet is to achieve heat absorption and cooling through compression refrigeration, so that the control cabinet can transfer the heat and water in the air in the electric cabinet to the outside of the cabinet under the closed condition. The high temperature, dust, oil, and corrosive gases in the external environment will not enter the inside of the control cabinet, thus solving a series of problems caused by fan heat dissipation. The electrical cabinet can always be maintained in the ideal temperature environment of 30-35 ° C, and the service life and stability of electronic and electrical equipment are better guaranteed. Therefore, Vililong recommends that customers can use air conditioning to control the temperature of the cabinet if conditions permit, so as to keep the temperature of the cabinet stable, provide a good operating conditions and environment for electrical components, and increase the service life of components and equipment.

1. The cooler of the wall mounting structure of the air circulation line inside the control cabinet air conditioner cannot be placed directly behind the mounting plate, because the air short connection can be generated between the air inlet and the air outlet when the operation is not correct, which can prevent the formation of adequate air regulation in the distribution cabinet. Make sure that there is a small space of 50 mm between the air inlet and the air outlet, and make the cooling air enter at an Angle. The space is at least 200 mm when the air intake is horizontal. Ensure a larger smaller space according to the manufacturer’s equipment technical data instructions. If it can only be installed on the backplane of the power distribution cabinet, design sufficient intake and outlet sizes on the mounting plate. The air conditioner is generally installed on the side of the cabinet, and an air conditioner strengthening plate is welded on the side panel of the cabinet to increase the strength of the side panel, and then the air conditioner is fixed on the side panel to achieve the cooling effect.

2. Sealing of the control cabinet In order to ensure trouble-free refrigeration operation, the control cabinet should be sealed. Heat discharge from the control cabinet, loose cable entry seal of the cold air guide hole in the control cabinet, damage to the control cabinet door or failure to install the indicator and operating device on the surface of the housing as prescribed will result in more condensation dripping during the day and cause higher temperatures in the control cabinet under unsuitable operating conditions. A cabinet air conditioner can be equipped with a separate air conditioner system in a hot environment. A cabinet air conditioner can be equipped with a separate heating and insulation system in a cold environment. A full-featured door lock and other functions, cabinet air conditioning waterproof or electronic shielding and other highly anti-interference performance; At the same time, suitable accessories and installation accessories should be provided to support the wiring, so that it is more convenient, easy to manage, and save time and effort. The device protection solution facilitates installation and maintenance.

3. Cabinet air conditioning In the data center cabinet solution in addition to taking into account the above points, should also consider the cable layout, power distribution and other aspects of the design to choose a suitable server cabinet and cabling cabinet is very important, a little neglect, may lead to losses. Quality is the user’s first consideration as the density of products placed in the cabinet increases, good load-bearing capacity is the basic requirement for a qualified cabinet product