Stainless steel fire protection 3c smoke exhaust fire damper smoke exhaust fan

Stainless steel fire protection 3c smoke exhaust fire damperOverview

1、 The normally open smoke exhaust fire damper has the following functions:

1. Normally in a normally open state, the valve remains open in the event of a fire.

2. When the pipeline temperature reaches 280 ℃, the fuse will activate and the valve will automatically close.

3. Output valve closing signal, interlock smoke exhaust fan stops.

4. Manually close, manually open.

2、 The normally closed smoke exhaust fire damper has the following functions:

1. Normally in a normally closed state, when a fire occurs, the control center inputs DC24V power and the valve quickly opens.

2. Output valve opening signal, interlock control fire exhaust fan.

3. Manually open. Manually reset and close.

4. When the pipeline temperature reaches 280 ℃, the fuse will activate and the valve will close again.

Stainless steel fire protection 3c smoke exhaust fire damperFire dampers can be divided into various structures according to their functions, such as smoke exhaust valves, smoke exhaust fire dampers, fire control valves, smoke and fire control valves, etc.

(1) In order to prevent the spread and expansion of fire and toxic high-temperature smoke through ducts during a fire, fire dampers need to be installed on the ducts of ventilation and air conditioning systems.

(2) Corresponding measures should also be taken when connecting the exhaust ducts of kitchens, bathrooms, and toilets to vertical shafts to prevent the spread of fire along the exhaust ducts between floors. When the exhaust ducts of kitchens, bathrooms, toilets, etc. are connected to vertical shafts, if there are no measures to prevent backflow, fire dampers should be installed on the branch pipes; When there are measures to prevent backflow, fire dampers may not be installed.

(3) The 3c fire damper should be able to automatically close when the temperature reaches 70 ℃. Generally, the fire damper can be made of a fusible element and interlocked with the fan for automatic closure.

When the smoke exhaust system is also used as a ventilation and air conditioning system, it is not only necessary to consider the requirements for air dispatch during ventilation, but also to consider the requirements for agile smoke exhaust and fire prevention in the event of a fire. In addition, smoke exhaust fire dampers are also suitable for situations where ventilation and air conditioning pipelines are installed on the ceiling and cannot be manually reset.

The smoke exhaust fire damper is an important component of the active system, installed on the site to control the flow path. Therefore, when it smells like medicine, it is the primary equipment to cut off the flow path and prevent flammable fluids from entering the fire environment. It is crucial whether the smoke exhaust fire damper is open or closed in the event of a fire.