The difference between fire windows and fire windows

The difference between fire windows and fire windows Fire windows have a long history of use. The earliest fire window is steel fire window, and its technical index is based on GB 16809- 1997 Steel Fire Window. There is no requirement for automatic closing of window sash, but there is requirement for heat insulation. Later, GB 16809- 1997 Steel Fire Windows was revised, and GB 16809-2008 Fire Windows was published in 2008, which increased the static working temperature of heat-sensitive elements, the reliability of window sash closing, the automatic closing time of window sash, and the test method of movable fire windows. This is mainly based on the unsafe consideration of fire windows without automatic closing function of window sash. Fire windows are also more diversified. According to the frame material, it is divided into steel fire windows, wood fire windows, steel-wood composite fire windows and other materials, and according to the fire resistance grade, it is divided into thermal insulation fire windows and non-thermal insulation fire windows. Thermal insulation and fire-proof windows are divided into Grade A, Grade B and Grade C. The word "fire-proof window" has no clear definition in China's standard system, and it is a conventional name for external windows with fire-proof integrity in the door and window industry at present. The so-called "fire window" is a new product gradually put into use with the implementation of the Code for Fire Protection Design of Buildings (GB500 16-20 14). According to the requirements of this specification, windows with fire integrity need to be tested in accordance with the Fire Test Method for Glass Components (GB/T 125 13-2006) to meet the corresponding fire integrity requirements of 0.5h or1.0h. However, the specification does not clearly stipulate whether such windows should have automatic closing function, which also leads to. However, in practice, for this kind of windows, that is, non-insulated glass components (with movable sash), the fire inspection department requires that the movable sash must be equipped with a sash opening and closing control device, which is in line with the Fire Test Method for Glass Components (GB/T 125 13-2006) and Fire Windows (GB/KLOC-0 In fact, the premise of safety is implied. The automatic closing device of the window should at least have the function of automatically controlling the closing of the window sash by the heat sensitive element, otherwise the fire safety of the window will not be guaranteed. As the external window of the building, the "fire window" needs daily ventilation and is always open. Family members often live in an unmanned state because they go out. If the external window has no self-closing function, it will be useless in case of fire, leaving a great safety hazard. Therefore, it is more scientific and reasonable to understand "fire window" as a non-thermal insulation fire window with the function of automatic control and closing of window sash by thermal sensitive elements. 17, which came into effect in July, can also prove this understanding. The standard is based on the relevant provisions of the new regulations, which explicitly requires that the external windows used in residential shelters have the function of automatic closing after the fuse blows in a fire. When the inside of the open corridor is not more than 2 meters away from the external wall of the residential building, the external window facing the corridor should adopt fire-proof glass windows with fire integrity not less than 1.00, and it should have the function of automatically closing after the fuse blows in case of fire. In the Code for Fire Protection Design of Buildings (GB500 16-20 14), "fire-resistant windows" are mainly used as external windows of buildings, such as the refuge room of residential buildings with a building height of more than 54 meters, buildings with B 1 B2 external insulation materials, external windows of buildings with open corridors facing residential buildings and between the upper and lower openings of buildings. There are two traditional fire windows, A and B, which have certain fire-resistant and heat-insulating properties. They are often used as firewalls or partitions in indoor fire zones, such as doors and windows connected with buildings and atriums, shops on both sides of indoor pedestrian streets, and refuge floors (rooms, high-rise ward buildings, etc. ) 100 meters above. Traditional fire windows are usually made of steel, wood and steel-wood composite materials. The glass is Class A insulating and fireproof glass or Class C non-insulating and fireproof glass. Although steel fire windows are durable and have good fire-resistant and heat-insulating properties, their heat-insulating and sealing properties are poor, and they are not corrosion-resistant and weather-resistant. Their external window closers and temperature-sensitive support devices are short of lightness and beauty, which cannot meet the use requirements and aesthetic requirements of building external windows. "Fire-proof window" generally adopts aluminum alloy and plastic steel as window profiles, and the glass adopts C-type non-heat insulation fire-proof glass. The fire resistance of "fire window" is slightly worse than that of traditional fire window, but it overcomes the shortcoming that traditional fire window can not be used for building exterior wall. At present, domestic manufacturers have developed aluminum alloy and plastic steel non-thermal insulation fire windows which can be used for building exterior walls. They have the function of automatically closing window sashes with heat-sensitive elements and can be installed in a hidden way. The structure is lighter and more beautiful, which represents the new development trend and trend of fire windows in the future. Based on the characteristics that traditional fire windows are mainly used indoors, it emphasizes fire resistance and has certain air tightness and wind pressure resistance, but it does not require water tightness, heat preservation and opening and closing force. The performance requirements of "fire windows" used for building exterior windows are more demanding. In addition to meeting the requirements of GB 16809-2008 "Fire-resistant Windows", it should also meet the requirements of the corresponding national standards for building exterior windows (such as GB/T8478-2008 "Aluminum Alloy Doors and Windows"). Fire-resistant integrity is one of many performance indexes of building doors and windows. To sum up, the so-called "fire window" refers to a non-thermal insulation fire window that can fully meet the performance requirements of building exterior windows and has the function of automatically controlling the closing of window sash through thermal components.