The eight-day "11" holiday will surely set off a peak in home renovation. At present, the appliance stores in many cities have formed a “water storage†state, and the number of “reservative purchases†has increased intensively. The author conducted a week-long visit to Gome and Suning stores in Beijing and Shanghai, and found a special phenomenon: the sales of Fangtai range hoods equipped with high-efficiency static suction technology system are far ahead, and the “efficient suction†selling point has surpassed “bigâ€. Traditional indicators such as air volume and large suction have refreshed the rules and become an important decision factor for the purchase of range hood products. In stark contrast, it is increasingly difficult to justify the emphasis on technical indicators such as “big windsâ€. ——In recent days, with the fact that industry people frequently expose some anti-scientific facts of “high-volume technology†of some range hood manufacturers, consumers have become more rational when purchasing range hood products, even if there are still some store promotions. The staff eager to show their strong suction, desperately recommending the bigger the better, but the results are beginning to be counterproductive. “The range hood is like a windmill. Once the air outlet is blocked, what is the significance of blindly turning the wind wheel?†Some customers refuted the promoters.
As we all know, China's kitchen environment and flue environment are very complicated. The kitchen environment is complex, mainly reflected in the constant changes in cooking methods such as frying and frying, and the total amount of soot exhaust gas is large. The flue environment is complex, but there are many reasons: on the one hand, some real estate developers have modified the pool area and modified the flue, resulting in a narrow public haze. Secondly, many residents will also tamper with the public chimney during the renovation process. In this case, plus the Chinese people's "three meals a day, eat on time" rhythm is very strong habits, will directly lead to the concentration of cooking, the load of the public flue will increase rapidly, the hood encountered The greater the resistance, the more difficult it is to discharge.
Faced with this situation, some manufacturers of range hoods have adopted the savage “increasing air volume†and “strengthening suction†to deal with this. This is the source of high air volume technology. But practice has proved that this is "anti-science". Experts believe that the ability to exhaust smoke depends on the ratio of air pressure inside and outside. The high air volume can only form a local high pressure zone, and can not really let the smoke out of the outdoor. Compared with the large air volume, in the public flue environment to achieve efficient exhaust fumes, "internal pressure" is a good solution. ——The so-called “in-pressurization†is to let the soot instantaneously increase the speed in the exhaust passage, and improve the kinetic energy of the air under the same power, thus solving the problem of insufficient exhaust power under the condition of the common flue. Experts call: "The industry needs correct innovation. Blindly improving the 'maximum air volume' of the range hood will only increase the resistance and noise during work, and waste power. The noise generated by high-power work will also damage the health of users. To aggravate ear diseases, cardiovascular and other diseases."
The reason why large winds, large suction and other technologies are alleged to be a "scam" for chasing commercial interests is largely because their "demonstration effect" and "practical effect" are different. Users often wonder: "When I first demonstrated in the mall, I felt that the suction and smoke exhaustion effect was really good. I can easily pick up a brochure. The air volume at the exhaust vent is also very large, and the noise is low. Why is it installed at home? What has changed?†Experts explained that this is because when the cooker hood is demonstrated in a shopping mall and other places, there is no real flue resistance. The user can only feel the wind volume and suction by intuition, and will be blinded by the “nominal maximum air volumeâ€. After the actual installation, the actual smoke exhausting capacity will be greatly reduced. The experiment confirmed that the "nominal maximum air volume" is 18 cubic meters / sec range hood products, in the real kitchen environment and flue resistance, the actual maximum exhaust air volume can only reach 5 cubic meters / sec, this is not Meet the needs!
Fang Tai’s “Efficient Static Suction†is in line with the scientific principle of “in-pressurization work†that experts can say, and can achieve comprehensive smoke exhaustion effect. This is the real reason for the popularity of this smoke machine product. Fang Tai engineer introduced that as a scientific and technological achievement of the “Eleventh Five-Year†national support project, “Efficient Static Suction†is a “three-in-one†technology that systematically solves the problem of soot, and can take into account “improving the efficiency of exhausting smoke†and “reducing Noise pollution, so that the noise level of the hood is as low as 48 decibels. The high-efficiency static absorption II technology equipped with the “automatic cruise boost†mode is in line with the trend of energy saving and environmental protection. By sensing the concentration, pressure and wind resistance of the flue gas, the resistance of the cooking is enhanced when the cooking resistance is increased. "Automatic combat", when the resistance is weakened or disappeared, it maintains the normal operation mode, which can achieve a good smoke exhausting effect while maintaining the best noise level.
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