Selection Techniques of Chinese Style Hood for Kitchen Appliances

Chinese-style range hoods are simple, lightweight and economical. European-style range hoods have a more luxurious appearance, but the price is slightly higher. The families with small kitchen area mainly buy "Chinese" range hoods. These families pay more attention to cost performance and practicality. The price of Chinese machines on the market is only about one-third of that of European machines. Development, the technology is quite mature, the depth of the smoke collection bin is 2.5 times that of the ordinary European machine, which is more conducive to the collection of rising fume and the smoke extraction effect is more ideal. In addition, the motor fan of the Chinese fume hood is directly facing the fume sucked in directly, and the fume can be quickly discharged, and there will be no stagnation or overflow of the fume in the smoke collecting bin, so the oil dirt will not remain in the smoke collecting bin.

Compared with European-style range hoods, Chinese-style range hoods work in a similar way. They absorb the fume to the fume port through the rotation of the turbine (similar to the reverse operation of the electric fan) (the technical term is called "negative pressure zone"), and are filtered. The net slides into the oil receiving cup, and a very small amount of smoke is discharged outdoors through the smoke hood (chimney).

Generally referring to the design of European and Chinese eating habits, Chinese people pay more attention to oil and fire, and the amount of cooking fumes is relatively large. Therefore, a large-displacement range hood must be used. Therefore, in terms of the ability to absorb fume, Chinese style is more suitable for China People needs.

Chinese characteristics

1. Smoke extraction effect: It belongs to deep-sucking smoke machine. It generally adopts a high-power motor. It has a large smoke collection cavity and a large turbine. It is a direct suction type, which can gather the rising smoke first, and then pass through the oil. The net can drain the fume, and the fume extraction effect is good, which is more suitable for Chinese families who often fry and fry;

2. Energy saving effect: The range hood with Chinese power of 168 is even better than that of the European 200, so the lowest power in the European style is also around 200. In comparison, the Chinese range hood is more energy efficient than the European style;

3. Installation requirements: From the installation position, it basically belongs to the "ceiling type" range hood, the size is generally 700MM-750MM, suitable for families with small kitchens, the requirements for cabinets are relatively small, and the size is suitable;

4. Price problem: the cost of production materials is low, the production process is relatively simple, and the price is moderate;

5. Technical indicators: The corresponding wind pressure of the Chinese strong smoke exhauster is generally 350 Pa, and the wind pressure of the Chinese ordinary smoke machine is generally 280 Pa. The wind pressure of the smoke machine approved by the country in 1999 should not be lower than 80 Pa, and no new standard is currently issued.

6. Disadvantages: The appearance is not beautiful, the noise is large, it is easy to meet, the oil dripping, the oil fume is not cleaned, the oil fume is not separated, there is a certain pollution to the surrounding environment, the cleaning is not convenient, the service life is short, most of the switches are basically mechanical Switch, the heavy feeling is stronger!

Selection tips

Our family likes to fry and fry, and the large kitchen fumes become a headache. In order to buy a high-efficiency cooker hood, our family really used their brains.

First, we ruled out European-style range hoods. Once upon a time, the European-style range hood broke the situation of the Chinese-style machine to dominate the world with a gorgeous appearance, and won the favor of consumers. I have also made several ideas to buy European-style machines. However, many relatives, friends, and counter salesmen have told me that the Chinese machine is good in terms of fume extraction. Because the Chinese range hood is designed according to the characteristics of the Chinese cooking fumes, although the European style is beautiful, it is not necessarily practical and the price is higher. After persuading many people, I finally changed my mind and decided to buy a Chinese machine.

Next, I started to choose the right model in the Chinese smoking machine. The Chinese range hood is dazzling in every way. Some are equipped with large fans, but the noise is loud; some are equipped with two fans, but the inner wall is rough; some are smooth, but the efficiency is not high. Tossing and picking, I came out of a misunderstanding: it is not that the greater the fan power, the better the fume extraction effect. Some fans not only have high power consumption and high noise, but also placed in the middle of the inner wall of the machine, in fact the unit exhaust volume is not large. It's like singing alone. Although I have a loud voice, I don't use gas and I don't understand skills.

Finally, we were interested in a range hood. Although it is not the most powerful, it abandons the traditional single bottom-up suction method, and the two sides of the fan expand the suction space radially. The perfect combination of air volume and ultra-quiet, improve the gas collection efficiency by 30%. Moreover, the outer wall of this model is entirely made of stainless steel, and the inner wall is smooth to the touch and does not form grease.

Good products have a good price. We walked through the market and found that this model is the most expensive of the Chinese range hoods, but I still bought it. However, is this model really as described in the materials? Perhaps, it can only be concluded after a period of time; perhaps, the range hood is not decisive for eliminating the fumes. Only the frequent cleaning and cleaning of the kitchen is the fundamental way to eliminate the fumes.

Purchase Notes

1. Exhaust air volume

This is one of the main quality indicators of range hoods. If the amount of exhaust air is large, the generated fume gas will not overflow the hood, and most of it will be sucked into the hood and discharged outside through the exhaust duct. But the amount of exhaust air is not the greater the better. Excessive exhaust air volume will take away too much heat and affect the normal calorific value of stove fuel. National standards stipulate that the amount of exhaust air should be greater than 6cm3 / min.

2. Exhaust efficiency

Exhaust efficiency refers to the percentage of the amount of pollutants exhausted from the hood and the amount of pollutants generated during cooking. China uses the determination of carbon monoxide content to express. According to the standard, the exhaust efficiency should be greater than 60%. The above two items can be seen in the instruction manual at the time of purchase. If the instruction manual is not marked, it is best to choose another one.

3. Noise

Noise is also an important indicator to measure the performance of the range hood. Abroad, the noise of the range hood is controlled at 30-50 decibels. Because most of China adopts multi-blade centrifugal fans, the rotation speed is relatively high, and the corresponding noise is also large. Therefore, the standard stipulates that the noise cannot exceed 70 dB. When buying, you can turn on the audition to judge.

4. Oil filter device

After the range hood is used for a period of time, the suction surface will be clogged with oil stains, and sometimes the oil will drip, so it is generally equipped with an oil filter device. There are several types of oil filter devices: made of single-layer or double-layer wire mesh, which can be removed and cleaned regularly before being installed in the suction port; labyrinth filter, which uses the principle of collision to filter oil fumes, can be removed and cleaned regularly, and the filtering effect is better Good kind; use the centrifugal effect of the fan to throw out the oil, then flow into the oil cup along the oil tank, and it can be poured out regularly. This is more practical and has fewer cleaning times.

5. The number of hood eyes (number of suction ports)

There are two types of range hoods in the market: monocular and binocular. The single-eye machine has a motor and fan, and an air inlet. Binocular machine is two motors and fans, with two air inlets. You can choose according to the situation of the stove at home. If you are using a coal stove or one-eye gas stove at home, you should buy a single-eye range hood; if you are using a two-eye gas stove at home, it is best to buy a two-eye range hood. When the stoves on both sides are used at the same time, the two fans can be turned on at the same time, and the exhaust efficiency is high. When there is no need to open both sides at the same time, only one side can be used, which is convenient and practical. But the price of double-eye range hood is more expensive than that of single-eye range hood.

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