Large kitchens also cannot do without range hoods. You should know that the space of the canteen is relatively large. If the range hood cannot be used well, there will be a problem of high noise from the range hood. So, what should I do if the range hood in a large canteen is noisy? The following SHINELONG editor will introduce it to you. Reasons and treatments for the high noise of range hoods in large canteens 1. Equipment quality: First of all, we must consider whether there is a problem with the quality of the range hood and whether the purchased equipment is regular; the second is whether the engineering company we find is professional, and whether the design and construction of the oil fume system are reasonable. These are all reasons that affect the high noise of the range hood. 2. Is the range hood purchased regular? Is the engineering design and construction of the kitchen oil fume system reasonable? 3. Improper installation position or unstable installation: Generally speaking, the installation height of the range hood is about 80-90cm from the top of the range hood control panel to the top of the stove; if the range hood is not installed firmly, it will resonate with the machine when the range hood is working and make noise. At this time, we can reinstall and fix the range hood; the range hood must be installed properly to avoid head collision and ensure the oil fume absorption effect of the range hood. 4. The exhaust pipe is too long or has a "dead bend": The more bends the exhaust pipe of the range hood has, the greater the pressure loss, resulting in reduced suction and poor exhaust. The exhaust pipe should be as short as possible and the turning radius should be as large as possible, so that the air can be discharged smoothly, the exhaust effect can be increased and the noise can be reduced. 5. Improper installation of the check valve: For a range hood with a check valve, you must first check whether it is fully opened. 6. The range hood has not been cleaned for a long time: the motor, turbine and the inner surface of the range hood are too oily, the weight of the fan is unbalanced on the left and right, causing the range hood to make too much noise or vibration. The range hood should be cleaned regularly. 7. The exhaust impeller of the range hood is deformed or improperly installed: It may be that the impeller is not cleaned correctly, resulting in deformation and imbalance of the dynamic balance of the impeller, or the impeller is not installed in place, resulting in incompatibility with the motor shaft, causing noise. If the impeller of the range hood is deformed, it can only be replaced. If it is improperly installed, reinstalling it can solve the problem. 8. Poor air circulation: When using the range hood, keep the air in the kitchen circulating, which can prevent the air in the kitchen from forming negative pressure and ensure the suction capacity of the range hood. How to choose a large canteen range hood 1. When buying a hood, first look at the overall structure of the machine, the overall shape and the surface of the range hood have no flaws, the plane is relatively symmetrical, and the quality of the range hood. 2. We must check each seam of the range hood to see if these places are relatively tight, because the quality of the range hood is important for these delicate places. If the seams are rough, then the quality will be poor. 3. We need to see if the fan position of the range hood is appropriate. Generally speaking, the position of the fan is crucial. The more evenly the position between two or more fans, the stronger the suction capacity, and vice versa. 4. When choosing a range hood, let's look at the convenience of use. Generally speaking, it is very important to clean the range hood because we often clean the range hood. To sum up: It is really important to choose a good large canteen range hood, which can be more convenient when using it. If you want to know more about canteen range hoods, please continue to pay attention to our SHINELONG equipment website.