The structure of the fire door


The structure of the fire door

       The fire door that wholesale hotel supplies is an accredited laboratory designated by the Ministry of Economic Affairs. It has passed the test according to the Chinese National Standard CNS 11227/A3223 Fire Door Fire Test Method, and has obtained the verification registration certificate and authorized logo issued by the Bureau of Standards, Metrology and Inspection It is a fire door.

       According to the United States NFPA and IBC standards, 'fire doors' are defined as 'any combination of fire doors, doors, hardware and other accessories that can jointly provide a certain degree of fire protection at the opening.'

  According to the results of the Chinese National Standard CNS 11227/A3223 fire door heating test, if the fire door test body meets the following conditions (1) to (5), it can be regarded as meeting Class A (with heat resistance) fire protection Door regulations, if only meet the following conditions (1) to (4), it will be deemed to meet the requirements of Class B (without heat resistance) fire doors.

   1. No deformation, damage, peeling, peeling, etc. that are considered harmful in fire protection.

   2. No flames that reach the non-heated surface of the test body and cracks and holes that are harmful to fire prevention are not generated.

   3. In the heating test, any part of the periphery (door leaf) of the test body, the reflex or deflection did not exceed one-half of the thickness of the door leaf.

   4. In the heating test, the non-heated surface of the test body did not produce a burning flame.

   5. The highest non-heated surface temperature of the sample in the heating test did not exceed 260°C.

   In general, within a certain period of time, including door leaf, door leaf and hardware accessories, a complete door set that can meet fire resistance, flame resistance and heat insulation, that is, relatively capable of Only by maintaining the basic properties of a stable body, preventing fire smoke from penetrating and blocking the conduction of heat insulation sources, can the fire be controlled within the fire protection zone, and will not spread or ignite another fire field. Only doors with such basic properties can be called 'fire protection'. 'Door

  Hotel amenity suppliers' safety facilities to prevent underground or building fires from spreading and control airflow with fire-fighting requirements are usually divided into steel and wooden fire doors.

   Class A fire door, fire resistance limit of 1.2 hours

   Class B fire door, fire resistance limit of 0.9 hours

   Class C fire door, fire resistance limit of 0.6 hours

   There are actually many types of fire doors, such as wooden fire doors, steel fire doors, etc. according to materials;

   according to the function of use: there are access control fire doors, indoor fire doors And so on;

   according to technology: there are electronic fire doors, etc.;

   There is no GB1410-93 on the website of the National Standardization Management Committee, but there is one

  GB 14101-1993 Standard for general technical requirements for wooden fire doors.

   This standard specifies the product classification, specifications and dimensions, technical requirements, test methods, inspection rules, marking and packaging, transportation and storage of wooden fire doors. This standard applies to fire doors that use wood or wood products as door frames, door leaf frames, and door leaf panels.

The difference between    electronically controlled fire doors and ordinary fire doors:

  Different points:

   emergency and statistical functions, the system can automatically display the designated support on the computer The physical location of the cardholder is convenient for timely contact.

   In the event of an emergency such as a fire alarm, the electronically controlled fire door will automatically open for easy escape, and the entrance and exit can also be automatically opened; when an illegal entry or exit occurs, it will automatically alarm;

        It is generally used in the boundary isolation of the fire compartment. Its main purpose is to separate the fire compartment. When a fire occurs, it can close the area that has been on fire, leaving more time for people in other areas to escape. The stairwell is a fire evacuation channel. There is no combustible object in the stairwell. As long as there is combustible object burning, the fire is easy to expand rapidly due to the chimney effect of the stairwell. In order to ensure the safety of personnel and avoid the increase of losses, the stairwell should be as close as possible to all Space is divided. According to the fire protection regulations, the water, electricity, heating, fire hoistway and evacuation openings of the fire passage must use fire doors that meet the fire protection requirements. (In addition, the stairwell must be equipped with a positive pressure air outlet to increase the oxygen content to ensure the safety of the evacuees). In addition, fire doors can be divided into self-closing and normally-closed types according to their characteristics. Achieve autism.

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