How to make a cap on the chimney pipe with your own hands -
Through the chimney on the street goes a mixture of gases with the combustion products of the fuel from fireplaces, stoves and heating boilers. Looking at private houses, you can see that the head of the pipe is crowned with a special visor or umbrella. At first glance, these devices, decorated with figured forging, intricate patterns and figures, it seems that they are just an element of decor. In fact, the hood on the chimney is an important element of the smoke removal system, the correct design and installation of which affects the efficiency of its work. This article will talk about the principles of work, types and methods of self-manufacturing deflectors with their own hands.
Design
Chimney hood - a device that looks like an umbrella or visor installed on the head of the pipe to protect it from moisture. Существует огромное множество вариаций внешнего облика флюгарок, в зависимости от формы и размера канала дымоудаления. Design колпаков всех видов состоит из следующих элементов:
- Protective umbrella. Top of the cap in the form of a cone, pyramid, semicircle or other, more complex forms. The umbrella protects the pipe from precipitation, debris, and birds entering the chimney.
- Apron-drip. This cap element protects the tube tip from drops bouncing off of an umbrella. It helps to increase the life of the chimney, prevents the appearance of corrosion, fungus. An apron is used when the cap is installed on a rectangular or square tube.
- Brackets. Sheet metal plates that are used to connect the visor to the apron. The number of brackets depends on the size of the chimney and the weight of the umbrella. Fasteners perform by welding.
Important! For the chimney, you can make a hood with your own hands from sheet metal, however, more complex models are easier to buy or order. The most convenient to maintain and use of the form - a protective umbrella with an opening lid. Due to the mobility of this element, the protective visor is not removed during cleaning or inspection of the chimney.
To make a durable cap for the chimney pipe, use a non-corrosive sheet metal. It is common to make your own hands from galvanized steel, copper or aluminum. Umbrella on the tip of a copper has a noble shade, it looks respectable, but often becomes a "victim" of collectors of non-ferrous metal.
Varieties
The abundance of forms and types of chimneys forced manufacturers to produce caps of various shapes, styles, sizes. In hardware stores there are products of the following types:
- Standard vane. Her umbrella is a pyramid, made of sheet metal, with brackets attached to an apron-drip.
- Quadro vane. The top of such models resembles a hip hip roof. As a rule, they are used for rectangular pipes made of bricks.
- Flyugarka with a semicircular umbrella. It is used for installation on the roofs of houses in the European style. In terms of increased traction, it has low efficiency, however, it looks beautiful on the ramp.
- Flat vane. It is equipped with a flat rectangular umbrella, used for buildings in the style of minimalism and modern. The flat cap of the cap does not allow the snow to slide, which is why the brackets of such models experience an increased load and sometimes become deformed.
- Round vane with a cone-shaped umbrella. Because it is used to protect stainless steel round pipes, such models do not equip with a drip.
Note! Flyugarki provide additional functional elements: flaps, double roofs, hinged doors. You should not get involved in elaborate details, because the most important thing in choosing a deflector is durability and efficiency. Poor shape can cause noise or vibration in the pipe.
Principles of operation and functions
The cap on the chimney not only protects against the ingress of debris and water into the smoke exhaust channel, it affects the traction force. The air flow, moving horizontally or at an angle, splits and goes down, this causes a “sucking” effect. Due to this, a zone with reduced pressure is created, into which the smoke from the furnace rushes. The protective deflector performs the following functions:
- It prevents the penetration of moisture into the chimney. Dampness in the chimney increases fuel consumption and creates favorable conditions for the spread of fungus.
- Closes the opening of the pipe from falling branches, leaves, debris, as well as bird nesting. Umbrella reduces the risk of fire, blockages. Thanks to him, the chimney less often clogs and functions more efficiently.
- Optimizes chimney operation. Properly selected visor by 10-15% increases the efficiency of the chimney. And with the help of special aerodynamic deflectors with turbines solve the problem of lack of thrust.
Important! Although the protective umbrella of the chimney is considered an element of decor, first of all it is a functional element of smoke removal. A properly selected baffle should not create noise or vibration inside the flue duct.
Making your own hands
To make a chimney hood with your own hands, it is better to choose a simpler model. To work, galvanized sheet steel, metal shears, bends, marker, cardboard, welding machine are required. The process is performed in the following order:
- Making a protective cap with your hands begins with the removal of measurements from the chimney. For this, it is more convenient to use a metal ruler or measuring tape. Measurements are made accurately, without haste.
- The next stage - the creation of patterns on cardboard. Consider that the umbrella should be put on the chimney easily, without effort, therefore a gap of 4-5 mm is added to the dimensions of the pipe.
- After final approval, the drawing is transferred to the metal sheet with a marker. Using scissors for metal, cut out the billet umbrella.
- The workpiece is placed on a convenient surface marking up and bending of the bending line, marked in the drawing by a dotted line, to an angle of 90 degrees. Then bend the lines marked with the letter "d". At the junction, make 3 holes with a pitch of 15-20 cm and fix the visor with rivets.
- The pattern of an apron-drip is also transferred onto a sheet of metal and cut out. Bends are treated with a sheet bending machine and connect the parts with rivets.
- Brackets of the required length are made of metal plates and welded to the apron and the umbrella. Places of welding treated with a primer for metal.
- On the cap put a corrosion-resistant coating and 1-2 layers of paint. 1-2 days are required for complete drying. Then it is put on the tip of the pipe.
Important! It is easiest to make a hood cap on a chimney, if you make a sheet of metal curved by an arc. When creating a drawing, keep in mind that in winter the weight of the snow cap falls on the brackets, so choose a metal of sufficient thickness and strength.
Independently making an umbrella to protect the chimney from moisture penetration, accurately measure the dimensions of the pipe. The correct model of the deflector improves the appearance of the roof and optimizes the operation of the smoke removal system.