Firstly, kitchen fume can cause damage to the human respiratory system. According to statistics, deaths due to respiratory diseases in China take up the first place in various causes of death. Soot-type fluorosis and arsenic poisoning have become endemic diseases in some areas. The purpose of installing the range hood is to remove the fumes in cooking and reduce indoor pollution. Therefore, when selecting a model, it is of first priority to select a high-exhaust-efficiency kitchen extractor fan.
Secondly, the greater the negative pressure of the kitchen extractor fan, the stronger the intake ability. Range hoods on the market can be divided into flat type, semi-deep type, deep type, and cabinet type. They have different negative pressure zones due to different structures. The negative pressure area of most deep range hoods is about 0.14 cubic meters, and the exhaust efficiency is about 60%. The negative pressure area of cabinet-type range hood, however, is about 0.32 cubic meters, and its exhaust efficiency is greater than 95%. But since the cabinet hood adopts a three-sided closed form, it doesn’t appear as luxurious as other types.
According to research, more than 60% of non-smoking women who induce lung cancer have long-term exposure to kitchen fumes. In a kitchen environment with poor smoke exhaustion, the health hazard is equivalent to two packs of cigarettes per day which has caused 1.6 million deaths worldwide each year. Experts pointed out that in addition to the correct control of oil temperature and cooking time, we can also choose the best kitchen extractor fan.
Due to the close-range intake and open design of the side suction range hood, the side suction machine has gradually occupied the market and become mainstream in the range hood market. However, in the face of a variety of side suction machines, consumers should keep their eyes polished and avoid the following misunderstandings on the kitchen extractor fan.
Circular type can’t necessarily guarantee 360°air inlet. There are a number of circular ports in the middle of many side suction machines claiming to be Omni bearing. However, in fact, the fumes generated by the two stoves of the cooker are distributed on both sides, and the smoke at the center position can only ensure air intake of the smoke near the center area, and the smoke far away is easy to escape. Therefore, it is necessary to ensure ample air inlet in order to let the smoke of the two stoves suck in at the same time.
A bigger the air volume doesn’t mean a better intake effect. The effect of smoking can not be judged by the air volume alone. If the air volume is too large, it will not only absorb the fumes but also disturb the flow direction of the soot gas. The “Eleventh Five-Year Project” study shows that the most suitable air volume for public chimneys is 15m3/min. In theory, wind volume and noise of the fan are a natural contradiction. Another issue is that if the air volume is too large, it will cause unbearable noise.
All in all, there are a number of technical problems needed consideration when purchasing a kitchen extractor fan and remember that shop around so you can get the best deal.