Ventilation deflector with your own hands

Features of the deflector ventilation pipes

Nobody wants to leave in his room part of the smoke, which did not pass through the chimney. And there can be several reasons for this kind of accident:

• a strong and gusty wind on the street gets into the chimney, thus preventing smoke from emerging from it.
• chimney not installed correctly or its height does not meet the standard standards.
• unsuitable pipe cross-section( small value).

To prevent any wind from blocking the combustion products, install a deflector. This device is mounted in the heads of smoke and ventilation pipes. With its help, the gases are sucked up by the wind. The deflector of the chimney changes its direction to the most favorable side for the movement of gases.

Thanks to this tricky solution, the wind does not reduce traction, but rather intensifies. The vent pipe deflector can increase the efficiency of the system up to 20%.Due to this design in the chimney does not fall snow, rain and various debris.

Installation is possible:

• on the collective and individual ventilation duct;
• on a collective and individual chimney;
• on the channel for the removal of gas combustion products;
• on the trunk of the garbage chute.

Design of the deflector. We install the deflector with our own hands

The chimney deflector consists of the following elements:

• lower cylinder;
• diffuser;
• umbrella.

It looks like this: the cylinder consists of a ceramic, asbestos or metal pipe. To him, attach the diffuser widening downwards, and above it mount an umbrella( hood in the form of a cone).For the cylinder and the diffuser, special ring lights are made, which will further deflect the wind from the vertical direction. The umbrella and diffuser are most often made of galvanized steel.

There are several standard types of designs:

• Grigorovich;
• Volper( round design);
• Shenard( star-shaped construction);
• deflector of TsAGI;
• Astato( open design);
• H-shaped deflector.

The operation of the device looks like this:

• When the wind direction is from top to bottom, the bottom annular opening is working;
• When the direction is bottom-up, the upper annular opening works;
• Two rings work in the horizontal direction of the wind.

When the wind direction is from the bottom up, the operation of the device is less effective due to the reflection by the umbrella of the wind in the opposite direction with respect to the movement of the gases. To eliminate this disadvantage, the umbrella is made in the form of two cones connected at the base.

To install the deflector yourself, follow these instructions:

1. Fix the posts on the bottom beaker using M6 bolts and nuts;
2. Use clamps to secure the upper cylinder to the bottom;
3. Use the brackets to attach the hood with the cone back;
4. Using the adapters, install a round deflector on the chimney( actual for square or rectangular pipes);
5. Add steel legs and supports to the deflector( actual for large cross-section pipes).

Chimney wind vane and its operating principle

By installing the weather vane on the pipe, you will also protect it from the wind. It consists of:

• conical cover;
• semi-cylindrical screen;
• cloth.

The screen and the cloth freely rotate on the axis, supported by a thrust bearing. Ie, the weather vane, in contrast to the deflector, is a movable windproof construction. The elements of the wind vane change their location based on the direction of the wind. Semicylindrical screen turns in the direction of the wind, thus preventing its blowing.

To date, invented a considerable number of designs weathercock, but all have the same drawback - a quick failure. This is due to contamination and corrosion on rotating elements. Especially, weathercocks are not suitable for regions with a harsh climate, because the frozen condensate can not work.

Therefore, the deflector, will be the most optimal option for any chimney in any regions. He not only makes the work of heating equipment more correct, but also organizes safe living conditions in the house.