INSTALLATION
DESCRIPTION OF THE RANGE HOOD (OPERATING PRINCIPLE)
Operating principle and structure of Chinese range hoods:
Operating principle:
The Chinese range hood is of a separating type rather than a filter type. This type of range hoods has no screen, which saves the trouble of replacing screens, and needs not to be removed for cleanup. It sucks the smoke coming from cooking oil into a closed chamber where the oil droplets carried by the smoke are separated from the smoke by centrifugal force, then the oil collected flows from the oil tray into the oil cup through a tube, while the smoke is removed outdoors through the discharge pipe on the top of the range hood. Therefore, it is necessary that an opening for the discharge pipe be made through the wall. You cannot use the device if you don't want to make the opening.
Structure:
The motor is the essential component of the device. The power of the motor determines the suction of the range hood. Each suction port must have a motor; a port without a motor will not suck, it will discharge. When buying a range hood, you should ask the number of motors, not the number of suction ports. With two motors, the more suction ports the device has, the less the suction is. The motors' power will be scattered by more suction ports. If oil drips from the suction port, the device should be of a single oil tray type, and the rotating speed of the motor may not be high enough to keep a strong suction. So if a range hood is of a single oil tray type and has more suction ports, oil will be likely to drip from the suction ports. Such being the case, oil cups and screens have to be attached to suction ports, which will in turn affect the suction.