Life in the modern metropolis is so active that many are drawn to outdoor recreation. Increasingly, people began to install barbecues in summer cottages, in the yards of private houses and even in an apartment or on a balcony. However, the smoke and fumes emanating from the grill when frying meat, fish or vegetables can spoil the mood not only to the instigator of the picnic, but also to neighbors. Exactly for this, exhaust hoods are created.
Design features
Such an umbrella is a kind of chimney - an exhaust hood. It serves to purify air from combustion products, smoke and unpleasant odors. It is installed directly above the barbecue. In addition, the umbrella will help to get rid not only of soot and burning, but also protect the barbecue itself from the weather and precipitation during operation.
The design of the umbrella for the barbecue is quite simple, so do not neglect your own comfort. There are 3 main structural elements:
- smoke collector;
- trumpet;
- umbrella.
The smoke collector serves to collect all volatile vapors and compounds emanating from frying. Combustion products become lighter than air at high temperatures, so they easily climb up the pipe and exit a safe distance from it. The umbrella will protect from the entry of precipitation into the chimney, at the same time it does not interfere with the free exit of smoke from the chimney. Further - about the most popular exhaust umbrellas.
Metal
It will be most correct to turn to a specialist who will manufacture a high-quality metal umbrella in accordance with all the rules, focusing on the individual features of the landscape, and correctly determine the required dimensions of the structure. If the owner of the site himself owns welding and is familiar with metal, you can make the device yourself.
For metal construction, stainless steel or copper is suitable. However, the price of such a material is quite high, so you can choose another metal that has been pretreated with protective agents. Umbrellas are made from sheets of selected material with a thickness of 3 mm. A thinner will quickly burn out, and a thick one will significantly increase the weight of the entire structure, which is also impractical.
You can use several types of metal to make the ventilation system umbrella an exceptional design solution. If the natural color of the metal does not suit, the product can be painted in any color with refractory paint.
Pros and Cons of Metal Structures
A metal exhaust hood will last a long time if all the conditions for its manufacture, use and proper care are met. Cleaning umbrellas from such products is very simple. No need to buy special care products, any detergent compositions that are at home will do.
It so happens that over time, the place chosen for the barbecue is no longer suitable. In this case, it will not be difficult to transfer the entire structure, but first it must be disassembled into parts.
Despite all the advantages, the material has one drawback - the metal is susceptible to corrosion, so the treatment with protective agents is best done several times a year.
Brick
The structure principle of the brick exhaust hood is the same as that of the metal hood. The design also has a smoke collector (nozzle), a pipe and an umbrella (visor).
However, such a structure has some features, if not observed, the entire structure will quickly fail. This can be dangerous for others. During operation, the brazier tends to heat up to very high temperatures, in which case the usual silicate brick will be destroyed. Therefore, it is best to build such an umbrella from refractory or ceramic bricks.
To give the building maximum strength, a special metal mesh is laid between the layers of brick. It is important that such a barbecue umbrella does not come in contact with a conventional roof. Slate cracks when heated, paint peels off the metal tile, and the soft roof deforms under the influence of high temperatures. In this case, the roll insulation will serve as the laying material between the chimney and the roof. It does not burn and perfectly takes any form.
The disadvantage of this type of umbrella is that it will not be possible to transfer it, having previously disassembled it into bricks. It is also quite difficult, sometimes impossible, to clean the surface of carbon deposits.
Selection tips
There is no big difference in functionality between a brick and a metal umbrella, both of them perfectly perform their task. Metal are easy to install. They can be easily moved to another place. Brick, in turn, will last longer, but are difficult to install and take up more space, but look more attractive in appearance.
Which exhaust hood is better to install depends on the availability of free space around the grill and financial security. It can even be constructed with your own hands. It is important to consider the place where you plan to install the barbecue and the material that will be appropriate for a particular site.
If you decide to install a supply and exhaust umbrella in a wooden gazebo, it is important to treat it with a fire-fighting solution before that. It should also be noted that from the ground to the very top of the pipe there must be at least 3 meters.