The air duct is a pipe device used to exchange dirty air with fresh air and distribute the air evenly in a certain space. The air duct is mainly used to distribute air, reduce turbid gas, and make the air we breathe more fresh. It also has a catalytic effect on our health. Ducting machine is a new type that has emerged in recent years. Due to factors such as aesthetics and economy, ducted air ducts are also used in home central air-conditioning systems. Currently, a 1 to 1 ducting machine is commonly used. Now I will introduce the relevant knowledge of duct installation for everyone, do not understand the duct installation friends quickly and see it!
What is a duct
The air duct is a kind of piping system, which is mainly used for the air transportation. The common air conditioning system is the ventilation duct in the life. With the development of our economy, the air conditioning has been widely popularized in everyone's life. Then, the cleanliness of the air-conditioning system has become a health concern.
Duct Specifications
According to national standards, the length of the side of a rectangular ventilation duct has its series of standards and the ratio of the length of the two sides that are specified, such as 120, 250, 320, 400, 500, 630, 800, 1000, 1250, 2500, etc.
Duct type
At present, there are four main air ducts on the market: galvanized sheet steel ducts, inorganic FRP ducts, composite fiberglass ducts, and fabric fabric ducts. No matter what kind of duct, it has its own advantages and disadvantages. Therefore, due to different places and different requirements, consumers should choose carefully according to their own actual conditions.
Duct effect
Ducts play a large and small role in our daily life. Today, the application of air ducts is very common and almost everywhere.
1. The air duct is mainly used in industrial and construction areas, such as transportation of goods and goods, which brings convenience to the majority of workers.
2. In many areas, air ducts are used as purifying artifacts. The most common ones are the electronics industry factory, factory workshops and other places. These venues need to discharge the indoor pollutants and harmful gases to the outside, while taking in new outdoor air.
3. Air duct air conditioning is now more and more common, it is mainly used to send cold air duct, so that people enjoy the cool feeling of air conditioning.
4. Restaurants, pubs, and kitchens in our homes are the most indispensable ducts, because we need to rely on air ducts to remove fumes and keep the kitchen fresh and clean.
Duct advantage
The modern air duct is favored by the public because it has a good seal, has a certain strength, is easy to install, and looks good. The most important thing is that the ventilation noise of the duct is so small that it is not annoying because of noisyness.
Duct price
The price of a typical duct is difficult to say because it depends on its material, brand, specifications, and so on. For example, a lot of oil smoke ducts used in kitchens range from RMB 100.00 to RMB 300.00; the ducts used in industry will be more expensive, ranging from RMB 200.00 to RMB 1000.00. Price.
Note: This price is for reference only! Due to geographical differences, of course, the price will be different. For more details on the prices, please refer to the local distributors!
Duct installation
First, the production of static pressure box
According to the number of air outlets required by the user and the size of the air outlet of the indoor unit, a static pressure box is prepared. If the user needs 3 outlets, 3 static pressure boxes for the outlets will be made. The static pressure box is made of a galvanized iron plate with a thickness of 0.5 to 0.8 mm. There are several ways to do a few wind outlets. The duct diameter is 200mm and the height is 180mm. The top valgus is curled. The air inlet of the static pressure box is slightly larger than the air outlet of the indoor unit. The box height is 400mm and width is 300mm.
Second, the production of air duct interface
The duct joint is made of a galvanized iron plate of 0.5 to 0.8 mm to make a cylinder of φ200 mm×200 mm, and both ends are crimped.
Third, chisel wind tunnel
First, according to the number of tuyere, determine the size of the duct hole, and then use the electric hammer and the second hammer to open the duct hole on the wall. For example, three air ducts need to open a wall hole of 200mmX800mm, and so on. In the wall of each air duct opening, a slot for inserting insulating sleeves is further opened, with a depth of about 50 mm and a width of 20 to 30 mm, which are used to connect the switches and switches for controlling the air outlet.
Fourth, the assembly static pressure box
Place the inlet of the static pressure box on the outside of the air outlet of the indoor unit, drill with a φ3.2mm drill, and then rivet it with rivets. The entire static pressure box is tightly fixed on the indoor unit, and then the 8 mm thick PE cotton is used to wrap the static pressure box and heat insulation treatment is performed. First put the PE cotton on the air outlet of the static pressure box, press out the stamp of an air outlet by hand, and then use a hacksaw to saw the round hole. Apply glue (such as 309 glue, a good helper) to the PE cotton with a brush, and then apply the glue to the static pressure box and let it cool for a while. Then stick the PE cotton to the static pressure box, and let the air outlet pass through the hole. However, it must be firmly bonded. PE cotton joints, use foil affixed.
Fifth, install the air duct
Place the inner layer of the air duct on the air inlet of the static pressure box, tighten it with the number 12 iron wire in parallel, and stick the foil along the one-circle circle. Then put the asbestos insulation layer and the outer protective layer on the bottom, and tighten it with the parallel No. 12 iron wire, and then stick the foil along the one week. Shake the air duct. There should be no cracks in the foil. According to this method, the various air ducts are fixed.
Sixth, install the indoor unit
According to the distance of the four hanging holes of the indoor unit, use a pencil to draw the position of the fixing screw on the ceiling of the indoor unit. After drilling, tighten the prepared expansion screw (welding a 490mm long wire bolt with a φ8mm expansion screw and then putting the two nuts into the hole) and tighten the four corners of the indoor unit. Lift the indoor unit in the bolt. The installation of the indoor unit must be kept horizontal, otherwise it will cause poor drainage and easy water leakage.
Seven, install the drain
The drainage pipe adopts 3/4′′ PVC pipe, and the outer side of the pipe is covered with insulation layer. The ends of the equal-diameter joint (with screws) are coated with PVC pipe glue, one end is placed on the indoor unit, and the other end is inserted with the glued PVC pipe. Fixed, always connected to the sewer, when installing, pay attention to the height of the drainage pipe and observe whether the drainage is smooth.
Eight, fixed air duct
Use φ8m expansion screws to weld φ8m×690mm steel reinforcements on both sides of the air duct, and then bend the steel bar to wind the air duct. It is also possible to use expansion screws on both sides of the air duct and lift the air duct with a wire.
Nine, sewing air interface bag
The thick canvas was cut into strips of 560 mm x 300 mm and sewn into a cylinder. The air interface bag is then wrapped in the duct joints with one fold and one fold, tightened with a parallel wire, and then the foil is attached to the joint. The other end of the air duct joint is placed on the air duct, and the inner layer of the air duct is firstly sleeved, tightened with iron wire, and then the foil is attached to the joint.
Ten, connect the outlet (standard outlet)
Put the canvas on the tuyere, tighten it with iron wire, and stick the foil on the outside.
Eleventh, installation outboard machine
Install the bracket according to the size of the outdoor unit, and then fix the mounting bracket with the φ14m×l00mm expansion screw. Then fix the outdoor unit on the bracket.
Twelve, indoor and outdoor machine connection
1. Connection of Pipes Copper pipes of φ9.52mm and φ19.05mm are put on the heat pipe, and after the bell mouth is widened, they are connected to the high and low pressure pipes of the indoor and outdoor machines, respectively, and then are emptied. Each interface must be strictly leak tested.
2. Connect the electrical part to the 380V power cable with a cross-sectional area of ​​4mm2x4 core cable, and the signal cable use a φ0.75mm copper core wire, each line must be put on the line number, make a mark, and then one by one correspondence . Each outlet can be supplied with a soft copper wire with a cross-sectional area of ​​1.5 mm2 x 2 cores, which is passed through a serpentine insulated bushing. One end is connected to the indoor unit, and the other is terminated on each air outlet.
3. Connection of the tuyere switch As shown in the left figure, the cable with the cross-sectional area of ​​O.75mm2x3 core is put in the insulating sleeve and buried in the slot opened by each doorway to connect to the switch for controlling the tuyere. Two of the two ends of the cable are connected to two static contacts of the control switch, and the other two lines are connected to the control end of the tuyere motor. The remaining one is cut off, and one of the switches is connected to the main power supply I secondary fire line, and the outlet of the air outlet is connected to the neutral line of the main power supply line.
Finally, during the renovation, it is necessary to leave a 520mm×140mm air outlet, a 820mm×370mm air inlet, and a 300mm×1500mm service outlet. The inspection port must be able to easily remove the two motors.
Duct manufacturers
Hebei Huamei Chemical Building Materials Group Co., Ltd. has always attached importance to the modern management of the company since its inception, always established the guiding ideology of science and technology, and maintained close contact and cooperation with universities, scientific research institutions such as Nankai University, Nanjing University, and companies continuously developing new ones. The quality and performance of products, new varieties, and original products are also constantly improving. Therefore, the company develops rapidly. In order to better rely on the scientific and technological strengths of universities and colleges, in 2002 the company as a shareholder, and Nanjing University, Nankai University jointly established a "Jiangsu Nanda Gold Environmental Protection Technology Co., Ltd.". To become the first domestic high-tech project in Nanjing University: The ion exchange resin production base for the treatment and recycling of toxic organic industrial wastewater.
Editing summary: Nowadays, the development speed of wind pipe is faster and faster, but there are still some deficiencies, so let us look forward to it can gradually improve with the progress of science and technology, and better comply with the requirements of the times it! For more information, please continue to follow our website.
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