Range hood selection tips range hood details

In the kitchen, the Range Hood is an important kitchen appliance, so I believe everyone pays great attention when choosing a range hood. In order to let everyone better choose the range hood products, Xiaobian will introduce some range hood selection skills.

Range hood selection tips

shell material

At present, the outer casing of the range hood on the market is mainly made of two kinds of materials, one is stainless steel (note that some manufacturers use iron alloy, the surface is covered by spraying or so-called baking process to cover its real material, so when purchasing Pay special attention to.) One is tempered glass or a composite of two materials. Easy to clean: tempered glass>stainless steel; durability: basically flat. However, stainless steel also has a thick and thin part, of course, thicker will be better. You can basically determine by touching and pressing by hand. If your home's kitchen is small, it is recommended that you choose a tempered glass with better transparency, because it does not seem to take up too much space. gas cooktops,cooktop gas,glass gas cooktop,table gas cooker cooktop,hob gas cooktop

Smoke chamber

The function of the collecting chamber is mainly to form a certain negative pressure near the exhaust outlet to form a smoke-closing effect. Generally speaking, the Chinese machine has the largest smoke collection chamber (the Chinese machine range hood has a deeper cover), the European machine is slightly shallower, and the near suction type medium plate near suction type uses negative pressure mesh or circular smoking. The way to achieve the effect of smoke collection, and because of its low installation height, closest to the soot, the soot begins to adsorb at the time of soot formation. Therefore, the Chinese machine will have a slightly better smoking effect than the European machine. The near-suction type is the most effective in smoking because of its advanced installation and structure.

Four oil filter net

For the traditional Chinese or European hood, the oil filter net has a square shape, a diamond shape, a round shape, a strip shape, etc. Generally, each oil filter net has its length in filtering soot and preventing dripping. Like the large mesh oil net, due to the lack of contact surface with the soot, the mesh is too large, the effect of separating the oil smoke is poor, and easy to drip oil; while the fine oil net is slightly better in separating the oil smoke, we can also be on the market. I saw many manufacturers spraying water mist to do experiments and seeing the water drops hanging on the oil net to show that it is not easy to leak oil, but everyone knows that the oil is sticky, the mesh is too small to block, affecting suction, and because The problem of the production process, the overall rigidity of the oil net is insufficient, and it is easy to be concave, so it is not easy to clean. Therefore, many manufacturers currently adopt the practice of superimposing a fine oil net with a large mesh oil net.

The near-suction type has created a corrugated double-staggered oil net. As the name implies, it uses the corrugated principle. Everyone thinks that when the tile roof is raining, it does not leak rain, but the ventilation is very good, and the summer is cool. When the oil molecules hit the metal surface, they stick to the metal surface, and the smoke is sucked away by the suction force generated by the turbine, so that the effect of the soot separation is achieved, and the cleaning can be freely removed and cleaned, and the cleaning is extremely convenient. Some people are worried that the double-layer filter oil net will make the soot take a detour, and the net smoke effect will be bad. In fact, this problem does not exist, because a good soot opportunity creates a huge negative pressure zone in the body (the same range hood, the double-stack filter net is often larger than the negative pressure zone formed by other oil nets) The action of atmospheric pressure and the fluidity of the gas work together, and the soot will be pressed into the negative pressure zone in a very short time. The flat near-suction type directly replaces the oil net with a smoke guide plate, and it is easier and simpler to clean a single piece of stainless steel or glass panel when cleaning.

wind mill

The wind wheel is a key component of the range hood. It is driven by a motor in a volute (as shown below). The size, style and installation position of the wind wheel are not only related to the smoking effect, but also affect the mute effect of the range hood. Therefore, the choice of the wind wheel is particularly important. The first is the diameter of the wind wheel. Many domestic range hood brands have a diameter of 200mm or 220mm, compared to 240mm diameter wind turbines. The reason is very simple, just like the wind of a big fan is definitely bigger than a small fan, which is for sure. In addition, it is not necessarily the wind wheel is larger, it is heavier, because the weight is also related to the material, the blade density and the like. Secondly, the wind wheel is generally subjected to dynamic balancing to ensure that the noise does not become too large after prolonged operation and grease adhesion. Nowadays, in order to make their products different from others, the major brands have realized the so-called differentiation, so that they can make some concepts and publicize them. Some divide a wind wheel into two small ones, and then put them together; some install two wind wheels; some turn the direction of the wind wheel rotation, anyway, it is varied. In particular, the double wind wheel is in the same smoke chamber, and when it is opened at the same time, it will cause mutual interference, which not only increases the noise but also weakens the suction force.

Motor

At present, the motors of domestic manufacturers are generally ball bearing shaft motors, the power is generally 200W, and the slightly larger one is 218W. Do not underestimate this big 18W, although the electricity is a little bigger, but the net smoke effect is very good. Because the voltage of household electricity is unstable, there are often differences between day and night, and this is the reason why peak and valley electricity prices are implemented in many places. Therefore, the extra power is obtained after a large amount of data statistics and calculations, so that the range hood can always be in the best working condition, and the function of sucking the soot can be maximized. Of course, the power of the motor is not as big as possible. Because it is too big, it is really power consumption, and the noise naturally follows.

In addition, the motor is a source of noise from the range hood. The noise of range hoods in some advanced countries such as Japan can be controlled to 30-50dB, and the service life is also long, because the motor and its bearings are of good quality. The technology of domestic motors in this area is still slightly inferior.

noise

Noise is an important indicator of the choice of range hoods. The size of the noise is closely related to the motor of the range hood, the wind wheel, the structure of the casing, the length of the flue, the straightness of the flue, and the path of the exhaust, which are the result of the combined influence of these factors. The state stipulates that the value of this indicator is not more than 74dB, but there are many brands that exaggerate the propaganda on the noise. This is best when you buy it, it is better to "see the truth, listen to the truth", believe your ears. In 2010, industry-related professionals conducted performance tests on color TVs, refrigerators, range hoods, rice cookers and other household appliances, and found that many products have exaggerated publicity. In terms of noise, the noise of many brands of range hoods is larger than that of color pages.

Wind pressure

At rated voltage and rated frequency, the range hood is operated at the highest speed. In a specific test device, the static pressure should be no less than 80Pa when the air volume is 7 m/min. The greater the wind pressure value, the stronger the anti-winding ability of the range hood, that is, the stronger the resistance to oil fume recharge. The wind pressure is large, even if the flue that is discharged outside is in the upwind position, the soot can be forcibly discharged, but if the wind pressure is small, the soot may be discharged very slowly, or it may not be exhausted at all. If the exhaust pipe is long or connected to the public flue, due to the large loss of the exhaust pressure, a larger wind pressure is required to ensure that the flue gas is discharged. Therefore, wind pressure is an important indicator for selecting a range hood.

Air volume

Air volume refers to the volume of air that a range hood exhausts per minute. At present, the state stipulates that the air volume index value must be greater than or equal to 7 cubic meters per minute. All major brands have achieved a substantial increase in air volume on the basis of ensuring low noise, generally reaching 15 cubic meters per minute. The large amount of air can make the range hood discharge more soot in a unit time, ensuring that smoking is faster and more timely, and avoiding the stay and spread of the soot indoors. Therefore, the air volume is an important indicator of the net smoke performance of the range hood.

Easy to clean

Although there are also hoods that claim to be “free to wash and wash” on the market, they are basically just conceptual speculations. Because the soot is subjected to two soot separation processes before being excluded from the outdoor, the first is through the separation of the oil net, and the second is through the turbine force to separate the soot. Therefore, where the hood and oil are inevitably going through the turbine, the turbine must be cleaned, so that it is a gimmick that is not detachable. Then, when we choose the hood, we should naturally pay attention to the advertisements of some manufacturers that are “free to wash and wash” and should not be deceived.

Since there is no "free wash", then we need to find an "easy to clean". Generally speaking, the most common cleaning is the hood panel and the oil net. Relatively speaking, the near-suction oil net is easy. Disassembled, low installation, easy to clean oil net and inner cavity, you want to clean every day. The oil nets of the Chinese and European machines are generally installed high and fixed with a few screws. It is extremely difficult to disassemble. Professionals need to be cleaned at home. Even if they love a clean family, they usually wash it once every three months to half a year. Rubbing the surface, in the long run, the oil will penetrate into the inner cavity and the oil net and the corners, not only breeding bacteria, but also easy to leak oil. If you drip a drop of oil into the pot when cooking, it will taste more.

For the cleaning of the turbine, the general recommendation is 1-3 years, depending on the frequency of household use, because if the turbine has too much oil, the motor will be difficult to drive the turbine to rotate at full speed, which will affect the suction and noise. It will get bigger and bigger, so the turbine should be cleaned regularly. However, this is a technical job, only professionals can clean, we need to ask the factory personnel to come to the door.

Detailed range of range hoods

Chinese: The biggest difference between the Chinese range hood and the European and near suction type is that there is a deep smoke collecting chamber. When the cooking fumes of the cooking are rising, they will temporarily gather in the collecting chamber and be sucked away. This feature is more suitable for the cooking habits of Chinese households with more fumes. The main disadvantage of the Chinese machine is that it is too bulky and not aesthetically pleasing. However, the Chinese machine can choose to be hidden in the cabinet, so that the aesthetic problem is basically solved.

European style: European-style range hood can be divided into two types, one is inverted T-shaped, one is curved, and there is a tower-shaped. This range hood is probably installed at 65CM above the stove. The European style is stylish, and the obvious shortcoming is that when cooking, it obstructs the line of sight, it is easy to touch the head, it is difficult to clean, and it is not convenient.

Near-suction type: Generally, the soot starts to spread when it rises above 40CM, and the near-suction type is installed at about 35CM away from the stove. When the cooking fumes are generated in the pot, they are adsorbed, so the net smoke effect is better. In terms of comprehensive smoking ability, aesthetics, convenience, etc., the near-suction type is more like the third-generation machine, the European-style machine is the second-generation machine, and the Chinese-style machine is the first generation machine.

The above small series not only introduces you to the selection of range hoods, but also tells you what are the common types of range hoods. I don't know if the introduction of Xiaobian is helpful for everyone to buy range hood products?