Fire damper is an important equipment installed on the pipes of ventilation and air conditioning systems, and its main function is to prevent the spread of fire by automatically closing the valve when a fire occurs, so as to protect the safety of buildings and personnel. Below we will detail how fire dampers work, their uses, and their important role in fire safety.
First, the working principle of fire damper
The working principle of fire dampers is mainly based on temperature control. The fire damper is equipped with temperature-sensitive elements such as fusible alloys or memory alloys. Under normal conditions, the valve is open, allowing air to circulate. However, when a fire breaks out, the temperature inside the pipes can quickly rise as the fire spreads. When the temperature reaches the melting point of the fusible alloy or the deformation temperature of the memory alloy, these temperature-sensitive elements will melt or deform, triggering the closing mechanism of the fire damper, so that the valve closes quickly.
The closing mechanism of the fire damper usually adopts gravity action and spring mechanism. When the temperature-sensitive element melts or deforms, the valve that loses support closes under gravity; At the same time, the spring mechanism also comes into play, helping the valve to close more tightly, ensuring that the fire cannot spread through the pipe.
Second, the use of fire dampers
The main purpose of fire dampers is to prevent the fire from spreading through the pipes of the ventilation and air conditioning system in the event of a fire. Since the ventilation and air-conditioning system pipes run through all areas of the building, once the fire spreads through these pipes, it can quickly spread throughout the building, causing serious consequences. Therefore, installing fire dampers on the pipes of ventilation and air conditioning systems can effectively cut off the propagation path of fire when a fire occurs, buying valuable time for fire extinguishing and personnel evacuation.
In addition, fire dampers can also be used in conjunction with other fire-fighting equipment, such as fire alarm systems, water sprinkler systems, etc., to improve the efficiency of fire disposal. When the fire alarm system detects a fire, it can control the closing of the fire damper and start the sprinkler system to extinguish the fire at the same time. In this way, the fire damper not only prevents the spread of the fire, but also provides strong support for extinguishing the fire.
3. The important role of fire damper in fire safety
Fire dampers play a pivotal role in fire safety. First of all, it can effectively prevent the fire from spreading through the pipes of the ventilation and air conditioning systems, and reduce the scope and degree of fire damage. Secondly, the automatic closing function of the fire damper can detect the fire in time and cut off the fire propagation path, buying time for fire extinguishing and personnel evacuation. Finally, the use of fire damper with other fire-fighting equipment can improve the efficiency of fire disposal and reduce the losses caused by fire.