The construction of the sandwich - pipe

How to make a sandwich - pipe.

«Sandwich" - pipes consist of three main elements:

• outer tube;
• inner tube;
• layer of mineral wool.

One pipe is in the middle of the other, an insulating layer located therebetween.Due to this, the outer pipe seal virtually not heated, except mineral wool does not burn, and can not be a source of ignition.This simple design provides greater reliability and durability of the chimney.So there is reason to think about how to connect their own sandwich - pipe, and install it on your site such a system of smoke removal.

His efforts to make the chimney of the "sandwich - pipe" is quite simple, and the materials it will take quite a bit.As the material for the inner tube take a simple stainless steel, the outer shell may be of any material (copper, brass or galvanized iron).The tube is made of stainless steel wrapped with insulation - basalt or mineral wool and inserted into the outer tube.Sometimes you put the outer layer of several pieces.Then you need to particularly pay attention to their attachment to each other.For registration of joint can be used screws or fleas, and interconnect the individual components as well, not only the length of pipe.

Also pay attention to the exit temperature of the smoke, if it is relatively low, as a heater can be used conventional mineral wool.If the planned heating the house with a fireplace or stove, which stoked with coal, it is necessary to take basalt wool, because it can withstand higher temperature conditions.Also, the width of the inner tube should be significantly increased in order to not quickly burned its walls under high loads.

The best and cheapest material for the manufacture and installation of "sandwich - pipe" on a suburban area is stainless steel.It is not exposed to atmospheric agents and will serve for many years, 6He collapsing.

How to install pipes sandwich.After

independent production require proper installation of pipes - "sandwich".It should be noted the fact in the area of ​​fastening outlet pipe to the heating device temperature is very high.Therefore, to isolate this part should be very carefully and attentively.It is necessary to arrange the structure so as to be able to replace blown without disassembling the entire portion of the chimney.At oblique placement of the pipe is necessary to install a special tap for condensate drain, which can occur when a large temperature difference.

In the standard vertical placement of the chimney, follow the instructions below:

• inner shell set up sockets, with this arrangement, the condensate can not get out;
• the outer tube collect the contrary - funnels down in this installation the smoke does not penetrate in the middle of the room.This technology is called "Installation of the smoke."

In order to prevent the possibility of fire is necessary to isolate the pipe from the ceiling.You can use the same mineral wool or special hollow boxes from heat-resistant material.Proper installation of a "sandwich" of the pipe will deliver a lot of trouble in the future and eliminate the possibility of fire.You can also use steel sheet nailed to the ceiling in place of an exit pipe to the outside.In this case, and this provides an additional source of heat in the room, since the metal is heated perfectly and long holding temperature without melting.When connecting a "sandwich" tubes take care and sealing of joints.For this purpose, a special furnace is suitable sealant based on sodium silicate.

Installation "sandwich" - pipe on the roof.

When mounting the outer portion of the chimney on the roof, should take into account several factors:

• by burning solid fuel chimney sparks rise, and there is a danger of ignition coating on the roof;
• in strong winds combustion products can be deposited on a variety of surfaces, including on your laundry, and this should be considered when placing linen rope.

In any case, the height of the tube should be sufficient to avoid the risk of fire and get rid of other troubles.