Several key knowledge points: 1. Kang is built on concrete floor, which is not wet and easy to burn. 2. The kang cave is wide and deep, and there is little resistance and much ash when the smoke flows, so it is not necessary to clean the ash every few years. 3. The brick wall forming the flue is thick, which can store heat and transfer heat evenly. 4. The position where the smoke in the stove enters the kang hole is called the throat eye. The area of this place must be smaller than the sum of the actual air intake areas of the oven door and grate, and also smaller than the area of the chimney mouth. So the stove can smoke. You can try installing a hose on your own faucet. When running water, the pipe head is suddenly pinched, the outlet becomes smaller and the water flow becomes stronger. Sediments that have not moved before may be impactful. This is the principle that the local pumping force becomes larger, which can impact the flue gas. 5. The bottom of the chimney root should be more than one foot lower than the bottom of the kang cave (specifically, the smoke outlet). To put it bluntly, there is a pit. This is the legendary "kennel" and wind tunnel. Its function is to prevent cold air and rain falling from the chimney mouth from directly flowing into the kang cave. 6. Don't care too much about the height of the chimney. A good chimney should be like an inverted horn, thin on the top and thick on the bottom, so that the root of the chimney can not only store more hot air, but also prevent too much cold air from being pressed into the chimney mouth. You can build the chimney as thick as the top and bottom, and add a small cement pipe on it in winter. It doesn't matter whether it is high or low. Some people in rural areas buckle a flat-bottomed basin. In this way, less cold air will be forced into the chimney. ? 7. The room is stuffy and can't provide enough oxygen for the stove, so it is definitely not easy to burn. 8, furnace air leakage, certainly smoke. 9. The position of the oven door is too high, and the oven door has become a smoke exhaust hole, and I am willing to smoke. 10, the oven door is too big and the smoke is scattered. 1 1. The grate is too big or too small. If the grate is too big and the ventilation is not good, put a brick or tile in the furnace hall to hold down part of the grate. 12, the hole where the furnace flame enters the kang is called throat eye, and the height of the kang hole must be higher than the height of the furnace cover and throat eye, so as not to suppress fire or smoke. 13, the kang cave (flue) is too narrow and the resistance is large. 14, there are too many caves in Kangyao, and the resistance is great. If the material permits, the wider the kang hole (flue), the better. The wider and longer the brick wall that forms the kang cave (flue), the better. The kang hole is wide and the exhaust is smooth. Brick walls are wide and long, with uniform heat transfer and storage. The heat of the kang is even, and it can be maintained for a long time after the ceasefire. It is enough for a kang to have two or three rows of kang holes. 15. In the past, kang was easy to burn, but now it is not easy to burn. It may be that the size of the big blank used to be big, but now the size of the brick is small, and the hole of the kang is too narrow. 16. Leave several ash-digging openings in the appropriate position of the kang to facilitate ash digging, and seal them with loess that does not want to crack at ordinary times. 17, the furnace is mixed with burnt coal ash (residue after burning coal) and yellow mud foam, which is unwilling to crack at high temperature. 18, the kang surface can be mixed with white plaster, soaked in white plaster and smoothed. This is mainly clean, flat and less ash, and it is not easy to break when laying kang skin. But the kang won't open when baking. 19. Now a kind of health is popular in Northeast China. To put it bluntly, first, build a four-box on the concrete floor, which looks like a pool, and there is no need to backfill and raise the bottom of the kang, so that the hole in the kang will be deep. A wall is built in the middle to divide the kang into two parts: the flue inlet and the flue outlet, which is equivalent to a "Yue" shape. The entrance flue is wide and the exit flue is narrow (some people's kang is inclined in the middle, which is equivalent to two trapeziums, one large and one small, and the entrance flue is narrowed from wide to narrow, and the exit flue is also narrowed from wide to narrow). It is difficult to make a kang board. I don't know what the principle is. )。 Some of these kangs say that they don't need to be dug once every seven or eight years, while others say that they don't need to be dug once every 10 years. With the transformation and relocation of shanty towns, many people's kang has been pulled open, and there is no windward stone, backfill soil and the like. The trouble with this kind of kang is that the kang surface needs to be made of concrete and steel bars, which is inconvenient. Moreover, there is only one brick wall forming the flue, which has less heat storage and rapid cooling after the ceasefire. But it can lead people to a theory: as long as it is built on the concrete floor, the kang hole can be deeper without backfilling. Don't forget to like it.
I saw this kind of kang in the relocation bungalow area. The wall forming the flue in the middle is inclined, but the depth of the kang is not too deep. Time 202 1 March1. On this trip, the kang in each room was torn apart by others, and there were several internal structures, which were the most special. It was recorded because it was special. It may be that the northeast people have the habit of hiding things in the kang cave, or that the ash of the kang cave is a good fertilizer, so many kang in the old houses in the northeast have been pulled away. At the position of the three red arrows, two of them together are warm smoke ports, and the one in the corner may be the smoke port where the smoke comes down from the fire wall of the stove; The one in the middle is the smoke coming out of the stove on the kang. Only this hole leads to the chimney. This kang is filled with backfill soil, so the kang hole is not too deep. I see that the deepest hole is more than half a meter, which means that the bottom of the kang hole is directly on the concrete floor.
1, looking at the house from the outside.
2. Look at the position of the chimney from the outside.
3. The location of the stove. Next to the stove, there is a sealed ash hole in the chimney root wind tunnel (kennel), which has been opened.
4. There is an ash cleaning hole in the appropriate position of the kang, which has been cut.
There are three holes in the kang: two are hot smoke holes, and the hole near the corner may be the smoke outlet of the fire wall. Go to the chimney alone, and below is the "kennel" in the wind tunnel.
The following is what I saw on April 6, 20021year. The whole kang has two rows of holes, all rectangular. If you look closely, you will find that the kang board made of cement has iron bars.