posted by: AUGUST 17, 2015
Kitchen exhaust hood systems includes the exhaust hood which is a device essential in the kitchen exhaust system in controlling the flow of smoke, air and smell regulating around the area in the course of cooking and other operations inside the kitchen.
This apparatus is also known as extractor hood or range hood which contains a mechanical fan that hangs above the stove or cook top in the kitchen to remove airborne grease, combustion products, fumes, smoke, odors, heat, and steam from the air by evacuation of the air and filtration. The chief help of an exhaust hood is that it can easily filter the airflow, without harming the edible materials and can be easily installed if it is semi-automatic.
Exhaust hood is likewise called in different names varying in location like in the United Kingdom it is known as extractor hood while it is known as range hood in the United States and in Australia. It is also called in different tags like a kitchen, stove, exhaust, cooker, vent, ventilation hood, cooking canopy, extractor fan, fume extractor, and electric chimney.
Exhaust hood has two main configurations be it ducted or vented application and ductless or re-circulating application. A ducted system allocates for elimination of all forms of airborne contamination and it also abolishes the need for regular replacement of the filters and avoids the airflow restriction caused by them. On the other hand, a ductless extractor hood only re-circulates heat and moisture into the kitchen. But some range hood designs allow for both types of applications.
It also comes from a variety of materials; take account of stainless steel, copper, bronze, nickel silver, zinc, tempered glass, wood, aluminum, brass, heat-resistant plastics, and more. Moreover, they are almost always incorporated with built-in lighting like incandescent, fluorescent or halogen to shed light on the cooking surface.
Into the bargain, some manufacturers tender corresponding accessories for the hoods like backsplash panels, pot racks, shelf units, or dish racks. Due to the advance in technology, extractor hoods control are now typically electronic although there are still some that come in low-end models but still use electromechanical controls. Such designs that come with electronic controls set out with remote control, motorized height adjustment, thermal sensor, overheat protection, boost mode, delayed shut-off, filter cleaning reminder, active noise cancellation, temperature display, user presets or memory and so on.
Exhaust hoods are generally used in filtration system in removing grease and other particles. But in commercial kitchens, these are often used together with fire suppression devices so that fumes from a grease fire are properly vented and the fire is put out quickly. Commercial vent hoods may also be combined with a fresh air fan that draws in exterior air, moving it with the cooking fumes which are then protracted by the hood.