We tell the advantages and disadvantages of each type of ventilation valve and installation features.
Now in many homes, sealed glass windows are installed. In order to "in the burden" to the expected warmth and silence, the hosts did not appear discomfort caused by a shortage of fresh oxygen, the formation of mold on the walls, fogging window glass and slopes, you need to take care of solving this problem in advance. In most standard houses, the influx and extract occur due to the difference in pressure inside and outside the room, as well as wind. The cold in the housing penetrates through the gaps in the frames, doors, walls and sex, and removes through the exhaust channels in the toilet, bathroom and kitchen, in rare cases - and in residential rooms. Further on the general exhaust mine, it enters the roof or on the technical floor. If the thread is closed, the ventilation will not work properly and you will need to install the ventilation valve for plastic windows. We tell about this device.
Vanny valve for plastic windows
Why valves are neededViews
- Fold systems
- Curvage devices
- Slotted
- Overhead
- Mounting inside the wall
Why do you need ventilation?
- Too strong or weak influx. Even in good condition, natural circulation has a number of flaws. In winter, the shaft in the mine is strong because of the big difference in the densities of the warm environment in the apartment and cold on the street. As a result, indoors begins to blow from all the cracks, which leads to drafts. In summer, the thrust is too small, especially on the upper floors.
- Increased humidity. Sources of the appearance of vapors are quite a lot (cooking, cleaning, washing, the products of the vital activity of the owners, animals and plants). A family of four per day "evaporates" 5-7 liters of water, and the formation of humidity goes at a speed of about 300 g / h. This is enough that relative humidity (RH) in a modern apartment (with an area of 120 m2) was at least 70% (at t = 20c). This indicator does not provide proper comfort. Yes, and carbon dioxide, a person exhales up to 19 l / h, and to achieve its critical concentration in the clogged room (0.1%) can be quickly. Therefore, it is necessary that the wet atmosphere replaced fresh, more dry, in sufficient quantity: at least 30 m3 / h per person.
- Condensate. If, with constant pressure, the concentration of the pair will gradually increase, at some temperature (the so-called dew point) it will begin to condense. The higher the air temperature, the more moisture it is able to absorb. The dampness appears on the coldest surfaces of the room, for example, on a double-glazing. Heating devices and additional sealing are hardly help to cope with constant fogging.
For the room it takes an influx of at least 30 m3 / h. Meanwhile, construction regulations require that no more than 7m3 / h be through the frame. How to resolve such a contradiction? It is proposed to air the rooms, slightly opening the sash. The way it seems to be simple, but also there are a lot of flaws. It is dust, drafts, noise (the sound isolation index is reduced by 2 times).
Firms offer a variety of ventilating valves for plastic windows. They can be divided into several species depending on the features of the conductive channels.
Types of ventilation valves for plastic windows
Fold systems
These are the most simple designs. Fresh stream falls into the apartment through cutouts in the seals of the convener, passing to them quite a long way (1-2,5m) on the folds of the profiles of the frames from the inlet holes. The latter are usually located at the bottom of the frame and are also made in the form of cutouts in the seal of the gunner or in the folds of special grooves on the frame and casual profiles. A long journey helps the air to warm up from warm plastic - it reduces the risk of icing and dispels the sound energy.
When installing, the seal fragment is first removed, and then rinsed or screw the body of the product. The latter is equipped with a petal flap reacting to the pressure of the outer air: when the wind is strengthened, the petal is partially overlaps the vent hole. In addition, the damper can be adjusted manually. On heat and sound insulation, such devices practically do not affect.
The main disadvantage is low bandwidth. They provide an air exchange about 5-6 m3 / hour, but, according to sanitary and building standards, it takes an influx of 30 m3 / h for each person or 3 m3 / h per square meter of the square. In addition, such systems do not react to the state of the atmosphere inside the building. The advantage is the ability to mount on the already installed double-glazed windows, the absence of visible binding elements. When using them, sound insulation does not deteriorate.
One example is Ventotherm - provides forced flow and flux filtering, as well as heated by heat recovery (up to 45%). It is mounted over the frame through the expansion profile. Management automatically by indications of humidity sensors and CO2 content. Consumes 1 kWh per week.
Curvage systems
They are mounted on the top profile of the sash, having previously done in it one or two holes of the elongated shape. A reasonable question may occur - how to install such a ventilation valve on a plastic window and can it be done yourself at home?
Installation is not too hardwater and, as a rule, is carried out on the installed double-glazed. Performance is also quite sufficient, but a draft of a heavy frost may appear.
Slit devices
The working channel in them is a cross-cutting slot with a height of 12-16 mm and a length of 170-400 mm, made in a horizontal impression or in the top bar of the sash. From the street it is closed by an intake unit protecting against rain and insects. On the inside, the slot closes the control unit. The system provides an influx in a volume of 25-35 m3 / h (at p = 10pa), which almost meets the norms.
Most of them can be mounted on any profiles from plastic, wood and aluminum, both when assembling windows at the factory and on the already installed. Installation lasts 40-60 minutes. True, on aluminum flaps, if both blocks are also aluminum, the "cold bridge" occurs, and the channel is frozen. It is in the gap to insert a plastic tube to create a thermal survey that does not always guarantee success.
The problems of thermal protection, the fight against dust and the noise of the company are solved in different ways (various shapes of capofira, lattice, deflectors, filters). For example, in the Aerovent and Ventair valves in the outer block, an adjusting plate is installed closing with strong wind. From the output block, the flap sends the air up so as not to create direct drafts. In the VENTEC system, the stream is preheated by the outgoing heat in the cavity between the outer glass and the glass.
Internal damper deflector is usually controlled manually, but there are models with cord drive, barbell, or engine.
Among the slot devices are highlighted by hygrorgulate automatic action. They use a special principle of controlling the regulatory damper - depending on the humidity of the room air (in all other valves - from the difference of pressure of street and room air). At the heart of the idea - Energy Saving: People appeared - the damper is open, life has become more active - more air, fell asleep - smaller. And all this automatically.
In AERECO systems, the flap turns due to the deformation of the nylon tape beam. It is placed in the chamber, where the temperature is maintained at the level below room by cooling the incoming flow. This makes the device less dependent on external conditions. It reacts to the change in humidity in the room in the range Rh = 30-70% in summer and Rh = 15-31% in winter, passing through itself a volume of 5-35 m3 / h. In the "off" state, the slot is not closed to the end and passes 5 m3 / h.
If the house is located on a busy street, the slotted devices on them are not the best means to combat dust and noise. True, special accessories, such as acoustic visors and sounding inserts, reduce the transport noise of approximately 5 dB (on the volume of sound - subjectively by about 50%).
Overhead
The feature of the structures is a large area of the working slot channel (up to 200 cm2), elongated for the entire length of the profile. Since to make a channel without weakening the frame, it is impossible, such systems make false. Installing the ventilation valves on plastic windows can be made in two ways:- in the gap between the frame and opening;
- Between the sash profile and the end of the glass package.
They have a greater bandwidth (some - up to 160 m3 / h per 1 time of length at p = 10 Pa), but at the same time there are difficulties with sound, dust and heat shield. Overcome them using manually managed dampers and filters. However, there are also specific problems. This is a considerable construction height (60-150 mm) and a box shape, changing the appearance of the sash and the facade, so their installation can be opposed to the city's architectural services. Significant depth (95-150 mm) does not give the elegance of the interior of the room. To give them strength, the hulls are made from an aluminum profile, but with a thermal master of PVC and a small width (20-24 mm), therefore, the risk of freezing is increased. And the higher the bandwidth, the worse the sound insulation.
Use similar devices is recommended in two cases:
- If the thrust is small (for example, in country houses with a low exhaust pipe or in apartments on the upper floors of high-rise buildings);
- When using controlled mechanical exhaust.
Wall valves
They are usually installed near the heating radiator so that the air receives from the street is heated by the battery. In the outer wall, it is a hole with a diameter of about 90 mm (in order not to affect the reinforcement, the construction metal detector is used). Constructions offered by Aereco, Hausevent, Marley, Siegenia are quite varied.
The simplest on performance does not differ from the mortise, but are adjusted manually. More complex are equipped with humidity sensor, and the most advanced - fan, touch control panel and a multilayer filter. Some devices are capable of working alternately in the tributary and exhaust mode, and the outgoing flow gives the heat of a special membrane, which then heats the one that comes from the street.
If you read the feedback and opinion of specialists about the ventilation valves for plastic windows, their opinion is unanimously - they approve such technical solutions. Their advantages are more than flaws.
Boris Buttsev, Head of Technological Representative Office of Aereco
Many residents find themselves in a situation where gas devices with an open combustion chamber (gas plates, gas water heaters, boilers) are exploited in the apartment (gas plates, gas water heaters), and the rooms are "clogged" with hermetic glass windows. All slots are closed, and the oxygen for combustion is needed. There were already sad cases when, with a quarter heating with a fence of air for a burner from the volume of kitchen, oxygen fused, the flame was gaslo, and the automation did not work. As a result, people were situated. What to do? Be sure to use the supply devices, which even in the closed state would provide an influx, sufficient to maintain burning. An example of 22-50 (Aereco) can be an example, in which the flap has a special protrusion that does not allow it to close hermetically - thus ensure a stream of at least 22 m3 / h. It should be installed in the kitchen (according to the requirements of fire safety).