One of the most common and at the same time simplest ventilation elements is the grill. It performs two main functions - mechanical protection of the air duct against the penetration of foreign objects and regulation of the mine throughput. Standard vent. a check valve grille, the photo of which is presented below, demonstrates the classic plastic design of this component. At the same time, there are various structural and functional options for the grilles, which can be used both in the supply and supply and exhaust systems.
The device and principle of construction
The basic design is made of two main parts - directly grilles with ribs and valve system, which can be implemented in different ways. Adjustable models are usually equipped with a rolling shutter mechanism through which the user can adjust the throughput. The main advantage of this design is the ability to individually control the movement of air flows. Unregulated vents are less common. gratings with a non-return valve, the ribs of which are firmly fixed and cannot be changed in position. But on the inside, the valve can completely block the air circulation. The most practical and convenient in operation is considered to be an inertial grating that independently blocks the channel at moments of a certain intensity of air mass movement. The disadvantage of such a system is the possibility of one-way flow control - only as an exhaust system to remove exhaust air.
Types of construction materials
The popularity of plastic models has already been noted, which is due to the practicality, ease and convenience of installing this ventilation element. Modern plastic is also characterized by durability and a variety of design solutions. Nevertheless, in terms of its reliability and mechanical resistance, it loses to metal structures.
Gratings made of galvanized steel and aluminum last about 10 years, do not deform and protect the channel from various physical threats. However, steel models in conditions of high humidity and chemical influences can be affected by corrosion - even in the presence of a galvanized coating. Therefore, as an optimal solution, it is worth using an aluminum vent. a check valve grille, which also has a solid margin of safety and a service life of more than 10 years, but at the same time its structure is not afraid of moisture and temperature changes.
Classification of gratings at the installation site
There are three main types of ventilation grilles: internal, overflow and external. Just plastic models are more often used for indoor furnishings with ventilation ducts. Structures of this type are integrated into the openings of wall ducts, providing optimal dispersion of flows. Such devices include a ceiling ventilation grille, which can provide interfloor air exchange.
Transfer structures are specially oriented to the organization of the exchange of air masses between rooms. In order to preserve the sound and light insulation of the rooms, the blinds of such grilles in some versions have a V-shape.
Models for outdoor installation, respectively, are installed on the street side on the walls. They serve to a greater extent to protect the ventilation ducts from the penetration of precipitation, dirt, debris and small rodents, therefore they are more often made of metal. For such grilles, the presence of a check valve, which in winter will not allow the passage of cold air, is especially important.
What to consider before mounting the grill?
It is advisable to deal with the organization and arrangement of ventilation ducts at the design stage of the house. In particular, from the point of view of integration of vents. check valve grids the following aspects will be important:
- Appearance of the design - form and stylistic performance.
- Specific grid locations.
- Type of lattice in terms of regulation.
- Dimensional design parameters - the opening must match the dimensions of the grill.
- The presence of equipment or communications near the ventilation channel - in particular, the thermal energy from the working units should not affect the circulation in the served mine.
Construction Installation Methods
The configuration of the placement of the lattice is very important, as it will affect both the aesthetic qualities of the structure and its reliability. There are four options for installing vent. check valve grilles:
- Embedded method. Surface mounted, in which the lattice frames are simply screwed to the wall with screws.
- Integration in the opening. In this case, the design of the lattice is deepened into the prepared niche in the wall and is twisted from the back in it.
- Lateral installation. Also, the box is built into the existing end, after which it is attached with screws to the side surfaces of the wall opening.
- Installation in a profile design. Initially, a supporting metal base is installed in the opening, to which the grille is then fixed with special clamps.
Installation instructions
The installation process is usually performed in the following sequence:
- Preparation of tools and fasteners. At a minimum, a set of screws, a hammer drill and an electric screwdriver will be required.
- Mounting points are marked.
- Holes are formed to install hardware.
- The vent design should be disassembled. check valve grilles. Reviews note that the most reliable systems with a minimum set of elements - for example, models from the lattice itself and the blinds.
- A frame is mounted in the ventilation shaft, which should be screwed to the wall with screws.
- The main structure of the grill and its blinds are installed in the prepared box.
In what cases is the device used?
The grill itself is used as an alternative for supply and exhaust systems working in conjunction with fans. Such systems are less efficient and not so convenient in terms of control capabilities, but they provide natural ventilation with regulatory elements. For example, a ventilation grill with a non-return valve for drawing in the kitchen can also carry out the task of removing contaminated air and provide a fresh supply. Depending on the model of the device, the user configures it either for stand-alone operation, or for a specific mode in accordance with current needs.
Construction Service
The frame elements of ventilation openings are most susceptible to various kinds of negative influences. Therefore, it will not be out of place to periodically look after the design, taking into account the characteristics of the material of manufacture. So, metal vent. the grill with a non-return valve for the hood will require comprehensive care, since both its external and internal sides will come into contact with aggressive media. If it is installed at the exit from the kitchen, it is especially necessary to clean the surfaces from soot and visible dirt. The same nuance will be important at the installation stage when choosing the installation method. Mounting with a support box is the optimal solution for exhaust grilles, since the removal of the structure for cleaning internal surfaces is facilitated.