Alloy doors and windows are a kind of doors and windows that are widely used now.
Foshan aluminum alloy door and window manufacturer let's introduce the waterproof seal design of aluminum alloy doors and windows.
1. Water tightness of aluminum alloy doors and windows? Shijiao Tu Yupu deputy Yuliang has jurisdiction over Yunuo eight? Review? Cape Oval vice Xin sha cong rate dumplings ≈ Deng also ∮ ∮? 50Pa (that is, whether the watertightness of aluminum alloy doors and windows can be lower than the level 2 index):P = k × μz × μs × wo formula P: watertightness design value (Pa);wo: basic wind pressure (N/?); Μz: height variation factor of wind pressure; Μs: body shape coefficient, 1.2;k: coefficient, k value in coastal tropical storm and Typhoon area is 0.3, and other places are 0.25.
2. Waterproof design of door and window structure
(1) it is an effective way to improve the waterproof and sealing performance of doors and windows by actively adopting isobaric principle when designing the structure of aluminum alloy doors and windows.
(2) the overlap between the movable leaf and the window frame cannot pass the school casement window the overlap between the movable leaf and the window frame should not be less than 6mm.
(3) for high-rise buildings, cold areas and areas with high energy saving requirements, try to adopt flat-open doors and windows structure, and use less or no push-pull doors and windows structure. Since there is a large gap between the sliding door and window movable fan and the upper and lower sliding rails, and the two adjacent Casement are not on the same plane, there is no sealing pressing force between the two casement, only rely on wool tops to overlap, but there is a gap between wool tops, and the sealing effect is very weak, so the waterproof sealing performance of sliding doors and windows is very poor. The flat open doors and windows Casement and window frames are equipped with 2 to 3 sealing rubber strips to seal. After closing and locking at Casement, the sealing rubber strip is pressed tightly, and the middle cavity is easy to form an isobaric cavity, therefore, doors and windows with excellent sealing performance can be designed.
(4) aluminum alloy glass pressure line for installing glass on doors and windows should be designed in indoor direction to avoid water seepage between the glass pressure line and window frame.
(5) push-pull type doors and windows sliding indoor side should be designed high enough water baffle, otherwise when the outdoor rain has a certain pressure, the rain will cross the water baffle into the indoor.
(6) the upper part of the door and window movable fan should be set with water covering plate, and the lower part should be set with drainage hole.
(7) combine doors and windows to minimize exposed joints, because tiny gaps cannot be sealed with sealant and leakage occurs. When the exposed joint cannot be avoided due to structural reasons, the two contact surfaces of the profile at the joint form 90 °, which is convenient for sealing with sealant.
