Centrifugal type kitchen ventilator provided with axial fan

Abstract

The invention discloses a centrifugal type kitchen ventilator provided with an axial fan. The centrifugal type kitchen ventilator comprises an exhaust fume collecting hood, a volute mounted in the exhaust fume collecting hood, a centrifugal type fan mounted in the volute, a motor driving the centrifugal type fan, and an oil-filter screen mounted at an air inlet of the exhaust fume collecting hood and is characterized in that the axial fan is arranged at the air inlet of the exhaust fume collecting hood; and the oil-filter screen blocks the outer side of the axial fan and collects greasy dirt thrown out by the axial fan. When the centrifugal type kitchen ventilator is under operation, the axial fan rotates along with the centrifugal type kitchen ventilator. When lampblack contacts the axial fan, the lampblack is thrown around under the action of centrifugal force, collected by the oil-filter screen, and flows into an oil cup along the oil way, so that the lampblack separating effect of the oil-filter screen is improved, and the supply air rate of the centrifugal type kitchen ventilator is increased at the same time. Compared with the traditional kitchen ventilator, the centrifugal type kitchen ventilator greatly improves the first-time lampblack separating capacity, increases lampblack entering into the kitchen ventilator and decreases the kitchen ventilator cleaning times with fewer cleaning times or even zero cleaning.

Description

technical field [0001] The invention relates to the technical field of kitchen oil fume removal, in particular to a centrifugal range hood with an axial fan. Background technique [0002] The range hood is a very common kitchen fume removal device. When working, drive the motor to make the wind wheel rotate at high speed, so that a negative pressure zone is formed in a certain space above the stove, and the indoor fume gas is sucked into the range hood. Then it enters the inside of the hood air duct, and the oil fume gas is separated for the second time through the rotation of the turbine. The oil fume in the fan cabinet is subjected to the action of centrifugal force, and the oil mist condenses into oil droplets, which are collected into the oil cup through the oil circuit and purified. The flue gas is finally discharged along a fixed path. [0003] However, the oil filter screens of the range hoods on the market are often fixed, and the oil filtering effect of the oil fi...

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Problems solved by technology

[0003] However, the oil filter screens of the range hoods on the market are often fixed, and the oil filtering effect of the oil filter screen is low, which makes the amount of oil pollution from the secondary oil fume separation larger, which not only requires frequent cleaning, but also shortens the life of the range hood. reduce

An application number of 201420264166.X designed an oil filter that can rotate coaxially with the motor. Although this structure has a better oil filter effect, it also greatly reduces the air intake of the hood. The effect is not ideal

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