Once the range hood is over-aged, a lot of oil will be deposited inside. During frying or cooking, preheating may produce carcinogenic substances harmful to health, which may lead to lung cancer or cardiovascular and cerebrovascular diseases if inhaled by human body.
At the same time, after the service life exceeds the limit, the main structure of the internal accessories of the range hood will be constantly oxidized in the cooking environment, such as oil pollution, overtime and high temperature environment, including motor speed, smoke exhaust effect of the wind wheel, etc., and even lead to safety accidents such as fire when the range hood falls. Therefore, if the range hood reaches the service life of 7 years, it must be eliminated in time.
Extended data:
Range hood, also called range hood, is a kind of kitchen appliance to purify the kitchen environment. Installed above the kitchen stove, it can quickly pump away the waste burned by the stove and the oil fume harmful to human body generated in the cooking process, and discharge it outdoors, thus reducing pollution, purifying the air, and having anti-virus and anti-explosion functions.
The range hood needs to be cleaned regularly, and simple cleaning can't remove oil stains. To clean the range hood, professional cleaning agents must be used.
The range hood is mainly composed of shell, air duct, fan, one-way valve, oil collecting and discharging device, lighting device, power switch and power cord. ?
situation
It consists of a shell and a panel, and is formed by spraying cold-rolled steel plates. It is not only smooth and beautiful, but also durable and easy to clean.
electrical machinery
The motor is the core part of the range hood, which uses fully enclosed single-phase capacitor to run asynchronous motor. The iron shell is fully enclosed, the motor bearing is double-row ball bearing, the insulation level is E-pole insulation, and the starting capacitor capacity is about 4 microfarads.
wind wheel
Adopt centrifugal wind wheel. Its diameter is 220 mm/240 mm, and it is stamped with silicon alloy aluminum sheet, which is durable and has good dynamic balance performance.
air passage
It is a flue gas channel, which is formed by spraying plastic on the surface of cold-rolled steel sheet. The rationality of the air duct structure determines the exhaust air volume and noise of the whole range hood.
check valve
Plastic material, the role is to prevent smoke from flowing backwards.
Smoke exhaust device
It consists of an oil collecting box, an exhaust pipe, an oil collecting cup and an oil guide ring.
lighting equipment
Ordinary Chinese-style machines use 15~40W incandescent screw bulbs: European-style machines and proximity machines use cold light source lamps, and the lamps are sealed with detachable transparent plexiglass sheets to avoid oil smoke pollution and corrosion during cooking and ensure the safety of electrical appliances.
power switch
The touch switch or mechanical switch is used to control the working state.
References:
Range hood-Baidu encyclopedia