In the decoration of the kitchen, it is often because of the neglect of some small links that major irrationality is caused, and the installation of range hoods in the kitchen is a link that is prone to problems. So, how much do you know about the installation steps and precautions of the range hood? Today, Xiaobian will give you a detailed introduction here.

1. Installation steps of range hood:

1. Opening of flue

Developers usually reserve smoke holes, which can save this step, but it is necessary to confirm in advance whether the smoke exhaust aperture of flue matches the exhaust aperture of range hood:

If the smoke holes reserved by developers are not ideal, for example, they are too low to hide in the ceiling, they can choose to re-open holes. Before opening the hole, you should know the diameter of the smoke pipe with the manufacturer. The diameter of the hole is 1-2 cm larger than the diameter of the smoke pipe, and the extra size is used for sealing with foaming agent.

2. Install non-return valve

The smoke hole is connected to the public flue. If there is no non-return valve, the neighbor's oil smoke will flow backwards from this hole. Non-return valve can control the one-way discharge of gas to ensure that the gas in the flue can not enter the house.

The check valve provided by general developers has the function of fire prevention: when the temperature in the flue reaches 151, it is assumed that there is an open flame in the flue by default. After the temperature control element on the back of the valve body senses it, it will open the spring and forcibly close the valve to prevent the fire from spreading to the room through the fume exhaust port. If you buy your own check valve, you must choose one with fire prevention function.

3. Install the smoke pipe

If the smoke pipe is too long, it needs to be fixed on the ceiling or wall to prevent the flue from shaking during exhaust: the smoke pipe is sleeved on the interface of the check valve and carefully wrapped with aluminum foil tape or electrical tape. If it is not sealed, it will affect the smoke exhaust effect and cause oil accumulation in the ceiling.

4. Installation of hanging strips

It is necessary to hang the main engine of the range hood on the wall with hanging strips, and punch holes in the wall to fix the hanging strips.

when installing the hanging strip, three points should be paid attention to:

(1). Is there enough supporting strength for the wall? Non-load-bearing walls cannot directly hang range hoods. If it is a hollow board, its solid layer must be greater than 3 cm (the overall thickness is greater than 8 cm) to bear the weight of the range hood of about 31 kg (why is there such a hollow wall? Its wall is close to vacuum, so the temperature in the room will not be affected by the outside world, just like a big thermos. If the load-bearing condition of the wall is insufficient, for the sake of safety, you can weld a long pole suspension frame with angle iron and take root from the roof to bear the load:

(2) Be clear about the direction of the wires and water pipes at home (both in the construction drawing), so as to avoid hitting the wires and water pipes when punching.

(3) The lowest end of the European range hood should be 65-75cm away from the table top; The lowest end of side-suction range hood (also called near-suction range hood) should be 35-45 cm away from the table (usually the corresponding distance is recommended in the installation manual of range hood). If the installation is too low, when the flame of the cooker is high, it will cause the panel of the range hood to be hot. If the installation is too high, the suction will be weakened.

after measuring the height, mark the hole of the hanging bar with a pen: Virgo who is obsessed with cleanliness should do a good job before punching to prevent the table top from getting dirty. When punching, dust will fall into this plastic bag, which can reduce the pollution to the table top. If there is no suitable large plastic bag, waste newspapers are also a good choice: it should be noted that the kitchen walls are all ceramic tiles, and if you punch holes with an impact drill, the ceramic tiles will be easily trimmed. To use a hollow tubular diamond drill for drilling glass, or a spear drill (also called a triangular drill): adjust the impact drill to the flat drilling mode (there is no impact), adjust the rotation speed to the lowest, and pay attention to spraying water to cool the drill when drilling. After the tiles are drilled through, change back to the impact drilling mode to drill the back wall. Finally, fix the hanging strip with the expansion screw:

5. Install the main machine

The kitchen decoration is completed, and the range hood can finally appear: first, fix the air outlet base (the second check valve) above the range hood; then hang the range hood on the hanging strip; finally, connect the smoke pipe to the upper end of the air outlet of the range hood and wrap it with aluminum foil tape; the side-suction range hood is also hung on the wall; the hanging strip bears this big guy. There is no pressure: many owners choose to make a baffle above the main engine to hide the flue, which is beautiful and convenient to clean. This also needs to be taken into account when designing the hanging cabinet:

2. Precautions for installing the range hood:

Installation environment of the range hood: too many doors and windows should be avoided when installing the range hood, because when there are too many doors and windows, the air convection is too large, so that the effective suction range of the lampblack rises to less than 251mm, and the effect of absorbing and discharging lampblack is affected.

the range hood should be installed directly above the exhaust gas that produces oil fume, and the height is preferably 651 ~ 711 mm.

the gas discharged from the range hood should not be discharged into the hot flue used to discharge the smoke from burning gas or other fuels, in case of fire.

the range hood is used when the stove consumes gas or other fuels, and the room must be well ventilated.

it is forbidden to directly bake the range hood by the fire.

a reliably grounded power outlet must be used.

if the power cord is damaged, it must be replaced with a special cord or a special component bought from its manufacturer or maintenance department.

If the method specified by Mingzhu is not clear, the range hood will catch fire.

When replacing bulbs, please unplug the power supply first, and the power of each bulb is not more than 21W.

When cleaning, please wear rubber gloves to prevent metal parts from hurting people, and the removed parts should be handled with care to avoid deformation.

when cleaning the wind wheel, you should be especially careful not to collide, deform or move the balance weights of the blades, otherwise the whole machine will vibrate and the noise will increase.

please unplug the power cord when it is not used for a long time.

No matter how gorgeous and excellent the range hood is, there will always be various problems when it is installed and used incorrectly, so Xiaobian hopes to make your kitchen beautiful and durable through this article.