The opening method of doors and windows is required. At present, aluminium windows of the opening methods in our country adopt push-pull type, in addition, flat type and flat type. Each method has its own advantages and disadvantages. Users should choose according to their own needs. Let's talk about it one by one.
Push-pull type: the window is pushed and pulled left and right along the track or up and down. Advantages: it does not occupy indoor and outdoor space and is easy to operate, especially suitable for balconies. Disadvantages: The maximum opening degree can only reach 1/2 of the entire window area; In rainy days, the window can only be closed and cannot be ventilated; It is difficult to clean the outward glass surface; Poor sealing, moisture, dust is easy to enter; The window frame bottom slide rail slides back and forth, with a large space on it and a gap between pulleys on the bottom, causing a large heat loss.
Flat: it is a traditional window type, which is divided into two types: outer casement window and inner casement window. Casement can be single fan or double fan. Advantages: there are rubber sealing strips between Casement and window frame, which have good sealing performance; The outer casement window has good waterproof performance, and does not occupy indoor space when opening; The inner casement window is convenient for frequent scrubbing and keeps the window clean. Disadvantages: the open window will occupy outdoor space; The open window is easy to hit the child's head and easily cause rain and dust to invade the room.
Flat open and upper suspension type: it is the opening method vigorously promoted by the state to choose whether to open inward or top inward by rotating the handle. Advantages: it has good thermal insulation and sound insulation performance; When ventilation, fresh air will swing into the room; When it is windy and rainy, windows can also be opened to keep the indoor air fresh; It is convenient to clean the glass surface facing outside. Disadvantages: its technical content is relatively high, hardware is mostly imported from abroad, and the price is relatively high.
