Top-suction range hood: At present, most of the traditional range hoods on the market are "top-suction type", that is, the range hood is installed above the stove and the lampblack is sucked away by the exhaust fan on it. Top-suction range hood is very thin, deep and half-deep in between. Thin range hoods can't achieve the effect of quickly discharging lampblack because they are very shallow, and the net extraction rate of lampblack is only about 40%, which is basically eliminated now. Because the smoke collecting hood of the deep range hood is deep, the lampblack that is not completely discharged during the exhaust can be temporarily contained in the hood, which avoids the local lampblack diffusion phenomenon that cannot be discharged for a while and plays a buffering role. The lampblack extraction effect is better than that of the thin range hood, and the lampblack extraction rate is 50% ~ 60%. Top-suction range hood is also cabinet type, which is the combination of range hood and smoke collection cabinet. Now the well-known brand "Kebao" started from this cabinet range hood. Cabinet hood is a kind of hood with a metal frame and a glass smoke collection cabinet, just like a large-volume smoke collection hood. When cooking, the oil fume can be gathered in the semi-closed smoke collecting hood and discharged, which can effectively prevent the oil fume from spreading. Cabinet lampblack machine can achieve higher lampblack exhaust efficiency with a lampblack machine with average performance, and the lampblack exhaust rate is about 90%. Most top-suction range hoods are installed above the cooker, which will bring many inconveniences such as meeting and dripping oil when cooking. It can be said that the traditional top-suction range hood is no longer suitable for China's national conditions, and will gradually be replaced by side-suction range hood and down-suction range hood with better oil smoke absorption effect.
Side-suction range hood: Side-suction range hood is a product developed in recent years, which has changed the design of traditional range hood and the way of oil smoke absorption. When cooking, the oil fume is sucked away from the side, which basically achieves the effect of removing oil fume. The patented product in the side-suction range hood, the oil fume separation plate, completely solved the problem of difficult removal of Chinese cooking oil fume. This range hood adopts the technology of side air intake and oil fume separation, which makes the oil fume absorption rate as high as 99% and the oil fume purification rate as high as 90%. It is a range hood that truly conforms to the cooking habits of China families. However, after trial, the side-suction range hood with oil fume separator generally has a loud reaction noise, and this range hood has not become the mainstream product in the range hood market, so the varieties and styles available to consumers are not very rich.
Downdraft range hood: There are few varieties of this type of range hood. Now, there is a range hood combined with a cooker. The main engine of the range hood is directly placed on the cooker. It is said that the oil fume exhaust effect is excellent. When cooking, hot air, burning waste gas and oil fume can be discharged together, even if cooking in summer, it does not feel hot. Low noise during use, saving energy; This kind of lampblack machine cancels the traditional lampblack machine shell, and the top of the stove is spacious, which is especially suitable for the back balcony. Because the range hood and the cooker are placed directly under the window, there is no need for any device on the cooker, which completely solves the problem of installing the range hood on the window. However, although the range hood is sold together with the cooker (it seems that there is a disinfection cabinet), the price of five or six thousand yuan is still unacceptable, and the cost performance is not dominant. And its style, it looks like a stove burning firewood. Style is also an important factor when choosing a range hood. Although the cabinet range hood has high smoke exhaust rate and low price, the purchase rate is not high because the overall effect is not good.
* * * Selection and comparison of range hoods * * *
I think "the degree of smoke exhaust in the kitchen", "whether the smoke can be separated by the way of smoke exhaust" and "whether the cleaning of the range hood is convenient" are the three main criteria for selecting and comparing range hoods. The following explanation one by one:
First, the degree of smoke exhaust in the kitchen.
Because China's cooking style is vigorous and stir-fried, a lot of oil fume will be sucked into the body, and the spilled oil fume will be scattered in every corner of the room, and it is greasy everywhere. Therefore, the net absorption rate of lampblack should be the primary criterion for choosing lampblack machine.
As I said in my previous diary, as long as the range hood can absorb and exhaust oil smoke, the oil smoke absorption rate will be high. If an ordinary top-suction range hood is directly buckled above the pot, you can still get this effect, but you really can't do this: first, you can't cook, and second, the range hood will emit flames if it is installed so low. The installation height of the traditional top-suction range hood is generally about 700mm, and the cooking fume spreads around, so that only a part of the fume can enter the range hood and be discharged, and the rest of the fume will spread around. If there is a family with a top-suction range hood, they basically cook at home, not only inhaling a lot of lampblack when cooking, but also greasy everywhere in the kitchen. Therefore, in addition to the cabinet type, the oil smoke absorption rate of the top suction range hood is not ideal. Although the cabinet machine has a high net output rate, it is not recognized by most consumers because of its poor decorative effect and low grade.
Near-suction range hood takes air from the side, and the air inlet is greatly reduced. It only smokes lampblack, not flame. The near-suction range hood with oil fume separation plate can not only absorb oil fume, but also absorb harmful gases in the gas together. In particular, the oil fume separation filter plate of this near-suction range hood is really a feat of range hood transformation, and its oil fume absorption rate can reach over 99%, and the oil fume purification rate can reach 90%. Even the fried peppers can't smell the smell in the kitchen, which is especially suitable for open kitchens. Side-suction range hood with oil fume separating plate, with its high standard of oil fume removal rate and oil fume purification rate, has become a range hood that truly conforms to China's family cooking habits.
Downdraft range hood can be directly placed on the cooker, which can isolate the pollution source. The reason why the traditional range hood can't be cleaned is because it is installed above the pot and the distance from the pot surface is more than 50 cm. This space can't rise straight from the lampblack, but it will spread everywhere. It is said that if the distance between the suction port of the range hood and the plane of the pot mouth is less than 10 cm, the spread of oil fume can be effectively prevented. The new down-suction range hood is designed according to this argument, and the exhaust effect is excellent. It is said that its oil fume exhaust rate is no less than that of near-suction type, which completely solves the problem of kitchen oil fume spreading around and avoids kitchen pollution.
Second, whether the smoke exhaust method can separate oil from smoke.
Whether the smoke can be separated by the smoke exhaust method is not only an important factor affecting the smoke exhaust effect of the range hood, but also plays a decisive role in the convenience of cleaning and the service life of the fan in the future. When the traditional smoke machine exhausts air, the oil fume is inhaled first and then discharged. Due to the low extraction rate of oil fume, after a period of use, a large number of oil stains will accumulate in the machine cavity and blades, which is very difficult to clean. In order to isolate the oil fume, some manufacturers use oil filter screens to block the oil fume, but after years of use, the effect is not good, and the practical problems have not been completely solved, because most of the filter holes of general range hoods are about 0.04 square centimeters, while some filter holes are as small as 0.0 1 square centimeter, and some oil fume can still pass through. In addition, the traditional range hood can't separate oil from smoke, so a lot of oil will stick to the inner wall of the range hood and the fan impeller. Anyone who has used a traditional range hood will feel this way. After the newly bought traditional range hood is used for a period of time, its efficacy will decline. It is for these reasons. I have also seen a filter paper on the filter screen of a range hood. When smoking, all the oil stains are separated on that paper. Just change the filter paper directly for a while, but this will inevitably affect the exhaust effect.
Because of the oil fume separation technology, the near-suction range hood with oil fume separation plate can instantly suck the oil fume into the machine after starting, and physically separate the oil fume when it passes through the filter plate at high speed. Oil fume pollutants enter the oil tank below the filter plate through the "collision" of the filter plate, and are discharged by breeze, thus achieving 90% oil fume separation and purification effect, preventing oil fume from adhering to the machine and ensuring that the fan does not accumulate oil, thus ensuring that the fan does not need to be cleaned in the future.
3. Is the range hood easy to clean?
Because the traditional range hood has no effective purification function and cannot separate the oil fume, after working for a period of time, it will cause a large amount of oil accumulation in the machine cavity and fan, which is very difficult to clean. I have seen the TV advertisement of the range hood before, saying that it doesn't stick to paint, and the oil stains will fall off as soon as they dry. All this is a lie. At that time, there was no range hood to scrub. Although there are many special cleaning agents for range hoods on the market, the use effect is not as good as advertised. A bottle of expensive cleaning agent for range hood is sprayed out, and only a part of lampblack can be removed. If you want to clean the fan thoroughly, only professionals can take it out and soak it in strong acid and alkali to clean it thoroughly. This cleaning method is not only time-consuming and laborious, but also does great damage to the fan, which will inevitably affect the service life of the range hood.
Side-suction range hood with oil fume separation plate adopts oil fume separation technology. The inhaled oil fume is separated on the separator, and the oil flows into the oil tank below the range hood. The separated oil fume and gas are discharged to the outside, which is pollution-free fresh air, so that the inner wall of the machine and the fan will not accumulate oil, and there is no need to disassemble and wash, only the surface of the range hood and the filter plate for separating oil fume are needed to be cleaned, which truly realizes the disassembly and washing-free of the range hood. The separated oil fume filter plate can be easily disassembled, and users can easily clean it by themselves. When cleaning, you only need to remove the oil fume separation plate to clean, which truly realizes the disassembly and washing-free of the range hood.
* * * Comparison of near-suction range hoods * * *
From the comparison of the above three aspects, it can be seen that the side suction range hood with oil fume separation plate has obvious advantages (the lower suction range hood is not compared for price reasons). Although it has not yet become the mainstream product in the range hood market, I think consumers still don't understand the functions of such range hoods. I had a misunderstanding about this type of range hood before. I have always felt that the oil smoke separation filter plate has only a small gap and is tightly blocked. How to suck the lampblack clean? In addition, we were fooled by merchants, including some brand-name products. Almost every well-known brand of range hood business can come up with a test report and tell a bunch of data, but the actual result is disappointing. Practice is the only criterion for testing truth. After practical use, the oil fume purification rate of this side-suction range hood with oil fume separation plate is really beyond the reach of traditional range hoods.
There are some well-known online game users with smoking machines, such as Ruixin, Goehringer and Enoch. I have read many netizens' decoration diaries (I don't know if they are merchants), which list a bunch of power, wind speed, soot removal rate, soot purification rate and so on. I am basically skeptical about things that I have not experienced personally, especially the evaluation of their products by manufacturers. In fact, for consumers, we can't compare the oil fume removal rates of Ruixin, Gelinda and Enoch, and the oil fume purification rate is the most thorough, because we can only buy one range hood instead of three, and we can't test whether the oil fume removal rate of the range hood we bought reaches 99% or not, and whether the oil fume purification rate is above 90%. I have only used Ruixin range hood, so I will write about the feeling of this range hood. I think this lampblack machine can completely meet my requirements in use, and there is basically no lampblack, so I don't care whether the lampblack removal rate of the oil machine really reaches 99%. I don't think the smoke exhaust effect of other near-suction range hoods with oil smoke separation plates will be too bad. If there is any difference, it should also be related to the position and distance of the cooker. Since the smoke exhaust function is similar, let's introduce it from other aspects.
Appearance: The appearance of the near-suction range hood is similar, and the main difference is whether the shape of the lampblack filter plate is flat or arc. The arc-shaped filter plate is not only smooth in line and beautiful in shape, but also convenient to put the pot, especially the large steamer. In addition, this kind of arc baffle feels that the smoke collection effect is better (not verified). Therefore, netizens who don't care much about the price still choose a near-suction range hood with an arc baffle. However, the price reduction of flat panel is very severe now, and it still has certain advantages in cost performance.
Cleaning: Ruixin, Goehringer and Yinuo Drink all adopt the lampblack technology, so it is not necessary to clean the inside of the lampblack machine and the fan, but only the baffle for separating lampblack. I bought Ruixin and specially experienced it when cleaning. Except for the oil stain on the filter plate, there is basically no oil fume in the cabinet. See the link for details: the cleaning mother of Ruixin range hood decorates her diary for her son. Generally speaking, it is more convenient to clean up. I washed it with dishwashing liquid and scouring pad. Online introduction is more troublesome. I use a small brush and a special cleaning agent from the manufacturer to clean it. It is said that it is more difficult to clean the small brush at last than to clean the range hood. Ruixin's oil fume separation plate is also easy to disassemble, just unscrew the nut on it. It is said on the internet that the oil baffle of some range hoods needs to be removed with a screwdriver, and the removal and installation are not smooth, so when choosing this type of range hoods, you should go to the mall to remove the filter plates of various range hoods yourself, so you can experience the feeling.
Fuel tank: In the past, my son was very dissatisfied with Enoch's lack of fuel tank. He thought that when cleaning like this, the oil would flow to his hands by unscrewing the nut under the hood. He likes to put a fuel tank under it like Geiringer. Finally, I bought a Ruixin range hood without an oil box. After using it for a period of time, I personally think it is better to choose a hood without an oil box. If the fuel tank is plastic, it is unsafe to be too close to the fire. After seeing the metal oil tank, I can't see how much oil is stored in it, so I can't clean it in time. The oil box of my Tai Fang range hood has to be cleaned every few months, and I often get it. My family doesn't often cook, but my son cooks a lot. If there is an oil box, it will be cleaned in less than a month, so a lazy person like me had better not use the oil box and leave the oil in the range hood. It is said that one kilogram of waste oil can be stored. The manufacturer said that half a year's cleaning is enough. I'm going to challenge this limit and explore for lazy netizens like me.
Price: I think the average person's psychological price for a range hood should be around 1,000 yuan. After all, this is a high-tech range hood, and the cost is there. I classify all the manufacturers of range hoods with a price of more than 1,000 yuan as "profiteers". I didn't plan to buy this kind of range hood at first. First, I don't know this kind of range hood. Another reason is the price. I used to be too close to the buyer's suction type. In recent years, four or five renovations have been installed, and the effect was not bad at that time (the effect with Ruixin is really incomparable this time). Another reason is that Tai Fang is cost-effective. I bought it at a discount in ganjiakou Shopping Mall, around 800 yuan (the old model), and bought it in oriental home 1040 in the new Xiaoling style. However, there is no such price now. Brand-name cigarette makers on the market, not to mention the function, are not soft on the price. If you can't avoid being slaughtered, take a step back and buy a functional one. At the same price, the performance-to-price ratio of the near-suction range hood that can separate lampblack is much higher.
* * * Summary * * *
Over the past ten years, I have used and installed many range hoods for others, including Panasonic, Yuli and Sakura, with more than seven or eight brands. The smell of smoke in the kitchen has always been the biggest headache for people like me who often cook. Later, I used a square that was too close to the suction type, and I thought it was ok. Last year, I installed Ruixin, which is really better than what I didn't know. This kind of range hood is incomparable to traditional range hoods in both smoke exhaust effect and future cleaning.
This kind of near-suction range hood has a unique structure. Its oil smoke separation plate is double-layered, so that the oil can be "bumped" when exhausting, and the oil can be separated below, so that the blades on the motor will not hang oil. This is very important. Although the near-suction range hood in my home has a good oil smoke absorption effect (but not as good as Ruixin's), it will affect the use effect if it is not cleaned in time. Before installing Ruixin range hood, I always felt that the vertical seam on the oil fume separation plate was too thin. If there is too much oil, the exhaust effect will be affected if the filter plate is not cleaned in time. In fact, this is worrying. After the trial, it doesn't matter if I don't clean it for two months, but the oil stains on it are really unbearable, otherwise I can persist for a long time.
I especially admire the man who invented the patent for oil fume separation of range hoods. He did a good deed for the country and the people. To a great extent, he contributed to the environmental protection in China. If every family emits cool air instead of oil smoke, it will not pollute the air. For people who often cook, it really frees us from the kitchen fumes. Unfortunately, this patent was invented late, and my lungs have been filled with smoke for 30 years.
The oil fume separation technology of the range hood makes the inner cavity of the range hood clean and free from oil pollution, and the fan does not accumulate oil, and the input power is only 160W, while the power of the traditional range hood is generally around 200-230W, and the near-suction range hood can save about 30% electricity. It can be said that the generation of side-suction range hood with oil fume separation plate has solved the problems of low oil fume absorption rate, inability to separate and purify oil fume, four leaks of oil fume and inconvenient cleaning of existing oil fume absorption products. With its advantages of oil fume absorption rate as high as 99% and oil fume purification rate as high as 90% (the manufacturer says it can't be detected, but the oil fume is indeed cleaner than other range hoods), it will gradually occupy the range hood market and become the mainstream product.
I feel sorry for the high price of this range hood. Of course, I generally have such regrets about all the materials. I once discussed the price with the manufacturer, and thought that just one iron case and one motor would never exceed 1000 yuan. I doubt that Manager Song (who has now sold Ruixin) had to pay the patent fee, and the reply from another manufacturer was even worse. When I put forward the price of Tai Fang, the other party said that they could not compare with Tai Fang, and their sales volume was not that big. It seems that when they can't make small profits but quick turnover, they have to sell less and earn more. But now raw materials have gone up, wages have gone up, and the price of range hoods seems to have dropped a little. I think with the increase of market share, the price will fall. Therefore, friends who choose a range hood, if the price is similar, must choose a near-suction range hood with an oil fume separator. If the price difference is large (for example, the neighbor bought a set meal, and the range hood and cooker were only in 880 yuan), I still suggest that you choose the range hood above, because after all, you can still make money, and how much money you spend on health is economical.