In recent years, interest in the plastic windows in our country is constantly growing. Today, manufacturers offer a wide selection of window systems. And although their design is based on the same principles, differences still exist. Most features of window systems that control climate in the region for which they are intended, and the design developed for the southern regions, is not suitable for operation in the north. In addition, the specificity is determined by social and housing needs of the consumer (eg, acoustic performance or economy). As you know, translucent design consists of a frame, fittings and glazing. The concept of "window profile" relates to the first element of the system - the frame. It represents a set of core components. For example, distinguish the main profiles (the most important of them - the frame, sash, glazing bead and impost), as well as support (it's connectors, expanders, different decorative profiles, etc.). Structural performance of a system is determined by the interaction and functional characteristics of these elements. Kinds of systems in itself a hollow profile and is divided by partitions into several chambers filled with air. Depending on the number and geometrical characteristics (size, location) is determined by the type of window system - dual-chamber, three-chamber, etc. At present, their number may reach eight. But the most popular three-compartment system. The number of airbags depend insulation and energy-saving properties of window construction. Thus, when one chamber thermal conductivity is about 2.4 W / (m2.K), with two - about 2 W / (m2.K), but three - is 1.8 W / (m2.K). On the other hand, a significant increase in the number of cameras leads to a significant decrease in their volume. Thereby nullified the potential benefits of insulation. The optimal number of cells is calculated on the basis of the required technical performance profile system. In addition, it is necessary to take into account the conditions of its potential location. Separation profile of the cameras not only serves to increase the insulation. Each cell performs a more specific and technological problem. In general, the camera can be classified as drainage, basic, and additional dowel. For example, the dowel sections serve as a mechanism for attaching the loop fittings. Drainage chamber is designed to remove moisture. Thus, in the frame and sash of modern window designs provided slanted seam and the system of drainage holes. Through them, water gets into the corresponding chamber and is discharged from the outside. In this case, drainage channels are chosen in such a way as to prevent the interaction of water with metal profile system designs. To install the auxiliary profile elements or to enhance the thermal resistance of the product in the profile frame made additional slots. Finally, the main node in the design of the profile system - the main chamber, which houses a metal amp. Metal reinforcement amplifier called a reinforcing profile. As a rule, it is made of galvanized steel, sometimes of aluminum. As you know, with sharp temperature drops, and large external and internal loads, the plastic material may be deformed. This is due to the fact that the coefficient of elasticity of PVC construction is relatively small. Same weight, for example, triple-pane windows with shutters, can be greater than 50 kilograms. Also need to consider the fact that the profile system will regularly affect the natural factors (rain, wind). External loads can reach large values, especially in high-rise buildings. Thus, the main task of installing a metal amp in the main camera frame profile - increasing the rigidity of the window construction. Amplifiers are both a closed (rectangular or square), and U-shaped cross section. On strength performance and statistical indicators first exceeds the second. Because the closed form involves four support ribs, while the U-shape - only two. Located amplifier, usually between small cameras, which prevents the formation of cold joints, displacement of heat flows from the metal rod. Profile set Another element of the profile system is an impost. It represents a vertical or horizontal profile, interior space is divided into chambers. In one of them is a metal amp. Impost is designed to connect the wing box, and such that they can open independently of each other. In addition, it provides rigidity window construction. Shtulp by Functionality comparable to the impost, but it serves to connect the dependent of each other valves (ie opening of the one only possible after the discovery of another). Thus, shtulp, unlike the impost is not part of the frame, and a component of sash. Profiles, securely fastened to the sash windows, said bead. They are plastic strips required shapes and sizes, built-in grooves frame. Often, when construction works (especially in older buildings) have to increase the height of a window box. For this purpose, subject to special profiles - extensions. For complex structures consisting of multiple frames, connectors are used. They are used for the manufacture of specialized systems, complex configurations, and window designs of large size. Drainage from the window system is implemented using these profiles as the ebb-connectors. They can also be used for fixing window sills. In addition, there are a lot of finishing profiles, such as false Imposts (for the separation and surface decoration glass wings), and various trims (frames for framing window aperture) naschelniki (protection of construction joints), corners, etc. Seal Integrity - one of the fundamental properties of modern core systems, which to a large extent ensures their growing popularity. This characteristic determines the thermophysical parameters of the entire window structure. Sealed to provide contours of seals of various configurations. They are made of elastic strips around the perimeter of the window. Thereby greatly increase performance audio, hydro and thermal window construction. Manufacturers offer several ways to seal profile systems. For example, often used a two-seal. This is performed by internal and external contours, ie, in the frame and sash. Less commonly used three-loop seal, which is a combination of external, internal and mean. According to experts, profile systems with this type of seal on the basic parameters practically does not exceed the counterparts with only two circuits except for soundproofing. Much depends on the choice of material seal. If we speak about synthetic rubber (EPDM), then it has a high degree of flexibility that allows the seals closed circuit as a whole, not individual segments. Alternative to it can be silicone sealant, which, unlike rubber, the most adapted to harsh climatic conditions. Seals are attached either by koekstrudirovaniya (welded to the profile), or simply inserted into special grooves on the frame and sash. Increasing consumer demand and the geographic expansion of the use of plastic windows in Russia encourages manufacturers to produce specialized systems with different technological characteristics. The differences lie primarily in the number of cameras frame profile, its mounting depth, shape, reinforcing profile and the number of condensing units. In short, today the consumer is practically unlimited in the choice of window products, and can choose the best option.
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