Knowledge!How to deal with the loud noise of the boiler induced draft fan?

Fans are necessary components for cooling towers, boilers, and air-conditioning equipment. These equipment provide building cooling and ventilation, and the noise they generate cannot be underestimated, especially in open areas such as office building lobbies. How to reduce fan noise? How to control fan noise? These are common questions among users.

First, let’s analyze the causes of boiler noise. Starting from the causes, we can quickly solve the problem. There are four main reasons for the noise generated by the boiler: first, the noise generated by the induced draft fan; second, the noise generated by the operation of the blower; third, the combustion noise in the boiler room; fourth, the noise generated by the use of water pumps.

There are three main solutions: First, boiler blower noise reduction. Mufflers can be installed on the inlet and outlet pipes of the fan, or a sound insulation cover can be installed on the fan. The second is to insulate the machines that generate noise during the operation of the boiler room, convert ordinary doors and windows into soundproof doors and windows, and add soundproofing materials to the top of the ceiling. The third is boiler water pump noise reduction. A sound insulation layer or cover made of sound-absorbing materials or partitions can be used to enclose the pump and motor to reduce the noise of the pump.

The main function of the boiler fan is to dissipate exhaust heat, and the fan exhaust pipe and exhaust port will produce loud noise. Boiler fan noise reduction measures: 1. The fan pipe is wrapped with sound insulation felt and fixed with elastic brackets to prevent the pipe from vibrating and making noise. 2. The fan exhaust port is equipped with noise reduction equipment made of anti-rust and moisture-proof materials. (Higher water vapor content in the air)

Most modern buildings are equipped with air conditioning systems to ensure air circulation within the building. During the air circulation process in the floor fan duct, if the air flow is unstable, it may easily cause vibration of the duct. Methods to control air conditioning fan noise: The fan pipe is wrapped with sound insulation felt and fixed with elastic brackets.

During the heat and cold exchange process of the cooling tower fan, the blades cut the surrounding still air to produce aerodynamic noise with a higher sound value, and the sound waves propagate to long distances through the air medium. Measures to reduce cooling tower fan noise: 1. Install composite silencing equipment at the fan outlet. 2. Enclose the outside of the cooling tower with a sound insulation barrier, or seal the cooling tower in a sound insulation cover.