The key to energy saving of doors and windows is to meet the function of the use of the premise, has a higher insulation and thermal insulation properties. The most important thing for energy saving of doors and windows is to solve the problem of heat insulation of doors and windows profiles and the glass problem with small thermal resistance value, so that the doors and windows have high strength, high airtightness, high water tightness, high precision, excellent heat insulation and sound insulation performance. . As long as all the fine links from the design, processing and installation of doors and windows work hard, it is entirely possible to design and manufacture doors and windows that meet the requirements for thermal insulation and energy conservation. In recent years, China has done a lot of work on the research and development of energy-saving doors and windows and the introduction of technology. Overall, the energy efficiency of doors and windows has improved, but there is still a big gap compared with advanced countries. With the formulation and implementation of building energy efficiency standards, the state is also taking effective measures, and the situation has forced China's doors and windows and curtain wall industries to develop rapidly. At present, we need to do more research and practice in the following aspects on the energy saving of doors and windows. Establish a comprehensive energy-saving index system, such as the window's summer heat transfer coefficient, window glass's shading coefficient, air permeability, and window lighting performance. Establish energy-saving indicators and technologies for doors and windows that are in line with the characteristics of the region; try to increase the thermal insulation capacity of buildings to meet people's requirements for indoor comfort, reduce building energy consumption, strengthen energy-saving technology publicity, and establish a correct national energy-saving concept. Hardware accessories: Doors and windows rely on hardware accessories to complete the opening and closing functions. It is the most easily worn and continuously active part of building doors and windows. Its functional effectiveness not only directly leads to safety problems, but also affects the insulation performance and watertightness of building doors and windows. Sex and airtightness. Without high-performance hardware accessories as guarantees, it is impossible to produce high-performance energy-saving doors and windows. Door and window hardware accessories include: handle, sliding support, support gear, handle, window lock, pulley and so on. For the casement window, classification according to the sealing performance can be roughly divided into two categories: multi-point hardware and single-point hardware. The lock points and lock seats of the multi-spot hardware are distributed around the entire door and window; when the doors and windows are locked, the lock points and the lock seats are firmly buckled together and cooperate with the hinges or the slide stays to jointly generate a strong seal pressing force. The sealing strip is elastically deformed so as to provide sufficient sealing performance for the door and window, so that the window sash and the window frame are integrated; and the single-spot sealing performance is relatively poor. Therefore, the use of multiple locks and window locks can greatly reduce the deformation of the door and window sash and improve the sealing performance. For other accessories, sliding hinges should be made of stainless steel. For sliding windows with a width of more than 1 meter, or doors with double glass installation, double pulleys or rolling pulleys should be used. Optimize the sectional structure of the door and window frame profile. If there is no corresponding structural cooperation after the emergence of new materials, its role will be limited. The same material used in the structure is different, the difference in performance is very large, such as the use of multi-cavity heat insulation box, sealed with multiple seals and glass, accessories supporting, so that the K value significantly reduced. From this, it can be seen that to increase the thermal resistance of the frame, it is necessary to increase the width of the heat insulation strip or the thickness of the heat insulation core connecting the inner and outer aluminum frames. For the compact frame cross-section, according to the principle of heat flow length, under the same width of the heat insulation strip, a "bow" shape can be designed. Since the length of the heat flow is increased, the thermal resistance R is also increased, and the K value is further reduced. Multi-cavity heat insulation strip design was adopted to reduce the K value. Although widening the insulation strip can effectively reduce the K value, it can only be appropriately widened. If it is added too much, it will result in a structure that is not compact, and measures must be sought to increase the thermal resistance. According to the principle of heat conduction, the thermally conductive surface can be designed as a superimposed multi-cavity to increase the thermal resistance. Widening the insulation strip filled with foam material and matching with a multi-head chamber seal to further reduce the K value. In order to lower the K value step by step, the heat insulation strips can be widened, and the foamed material can be filled. The multi-headed seal is used to form the cavity to match the performance. The sealing structure should be matched with the performance of the frame. There is an opening problem for doors and windows, so that the gap sealing process when closing is a weak link, because the sealing is not good and the convection heat loss is generated. Therefore, in the framework and glass are to take effective measures to reduce the value of K, you must solve the problem of sealing performance, the design of the window seal structure in addition to solving the convection heat loss problem, but also consider solving the loss of heat conduction, so the seal design In addition to considering the sealing performance, it is also necessary to consider a multi-headed sealed cavity to form a multi-chamber space so that the K value can be matched with other parts. The commonly used sunshade facilities are: movable exterior shading. Movable sunshade facilities are a good barrier to solar radiation. The movable shading louver device is installed inside the open aluminum panel curtain wall, and can control the louver to lift and shade reasonably indoors. When not in use, the louver can rise into the interior surface of the curtain wall. This device can block solar radiation outdoors. However, the high cost of such equipment is not suitable for residential buildings. However, simple external shading brings problems such as building appearance and cleanliness. Therefore, residential buildings mostly use indoor shade. However, the energy saving effect of indoor shade is not ideal. Blind insulating glass. Louvre insulating glass window shade facilities. Louvre hollow glass window is installed in the hollow glass between two pieces of glass, can be installed in a variety of window frames instead of ordinary hollow glass, through the magnetic control louvers flip and lifting movements to achieve shade and insulation effect. When the louvers are in the vertical position, the heat conduction in the insulating glass can be effectively reduced, the direct sunlight can be blocked, and the shading coefficient of the insulating glass can be effectively reduced; when the louver is in the horizontal position, both the lighting and the shading effect can be achieved; When in the stowed position, it has the same effect as ordinary insulating glass. At the same time shutters in the hollow glass also solve the problem of cleaning and maintenance. This louvered insulating glass window integrates heat insulation, heat insulation, sound insulation, privacy, and decoration. It is suitable for application in a wide range of areas in China, and is a good product for energy conservation. Improve your creative and installation levels. Installation is an important part of the window structure. The installation of the window has a decisive effect on whether the window can achieve good quality. A window with good test performance does not mean that its performance is better after it is installed on a wall. How to install a window with a tolerance of millimeters on the wall of a wall with a tolerance of centimeters and connect the window and wall parts into a system to make the window and wall seamless and meet certain functional requirements is an important issue . The functions to be installed on the wall of the window are as follows: under the influence of various temperatures, the various functions of the window operate freely; the external force of the window can be reliably decomposed, and the positive and negative wind pressure can be effectively transferred to the wall; the window is not affected The various movements within the wall and the effects of dimensional deformation (settlement, vibration, thermal expansion, contraction, etc.); installation of the isotropic stress should be ruled out, the windows open freely; waterproof and soundproof sealing of the window and wall joints The insulation of the connection between the window and the wall. To meet these requirements, scientific, standardized, and strict construction must be carried out. In addition to meeting the technical requirements for general door and window installation, the energy-saving doors and windows installation should also pay attention to the following points. Doors and windows of the varieties, models, specifications, performance, opening direction and doors and windows sealed treatment must meet the design requirements. Door and window installation must adopt the method of reserving the hole. It is forbidden to install the edge of the door or to install it first. Energy-saving doors and windows should be installed according to different materials, using welding, expansion bolts or shot nails and other methods fixed, but the brick wall is strictly prohibited with a shot screw. Regardless of the fixing method, doors and windows must be firmly installed. Increase the overlap of the window opening gap and reduce the width of the opening seam. According to the materials used, the shape of the cross-section, and the parts of the device, various sealing strips are used for sealing to improve the airtightness of the outer window. The installation of the sealing strips and seals on the doors and windows shall be straight, and the combination with the doors and windows shall be firm and tight. When plastic doors and windows are used, all kinds of hardware, fasteners, sealing strips, spacers, pads, sealing materials and insulation materials, which are in close contact with plastic profiles, shall be compatible with PVC materials in performance. Plastic doors and windows are sensitive to temperature, so after entering the site, doors and windows should be stored in warehouses (shelves) below 50 degrees Celsius and away from heat sources. Pay attention to the installation of plastic doors, windows, and glass. Construction at low temperatures should be avoided. 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