Range hood with purifying and sterilizing functions

Abstract

The invention discloses a range hood with purifying and sterilizing functions. The range hood comprises a box body as well as a draught fan and a smoke collecting cavity which are installed in the box body, wherein a flow mixing box is installed at the rear of the smoke collecting cavity and in the box body, and is internally provided with an ozone and plasma generator and a flow mixing device which can be taken as a purification reaction area for smoke, ozone and plasma ions, the ozone and plasma generator comprises a glass tube, a conductive electrode in the glass tube and a metal net wrapping the glass tube, the conductive electrode, the glass tube and the metal net are integrally fixed in a shell of the flow mixing box. According to the range hood, after smoke enters from the smoke collecting cavity, the smoke is purified in the flow mixing box through a series of physical corrosion and electrochemical reaction, smoke fluid with ozone and plasma is constantly disturbed for reacting in the box body of the range hood, and finally, after purification and deodorization, clean and environment-friendly smoke fluid is discharged out of the box body.

Description

technical field [0001] The invention relates to a range hood, in particular to a range hood capable of purifying and disinfecting the range hood. Background technique [0002] When edible oil is cooked at a high temperature above 220°C, a large amount of volatile edible oil pyrolysis products and some volatile edible oil itself will be produced. The mixture of these smokes produced by edible oil under high temperature conditions is collectively called cooking oil fume. The composition of lampblack is mainly volatile oil, organic matter and its thermal decomposition or pyrolysis products. Kitchen fumes are directly related to the oil temperature when cooking. Due to the eating habits of Chinese people, they generally like to heat the oil temperature to 200°C. At this time, the main component is acrolein, which has a strong spicy taste. When the fire is fired, the oil temperature exceeds 300°C. In addition to acrolein, coagulation (BEC) will also be produced in the oil fume. ...

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Problems solved by technology

Among them, inertial separation is to separate the oil mist particles from the air flow by inertia through the change of the air flow direction. This technology requires simple equipment and small pressure drop, but the purification efficiency is not high, and it is only suitable for oil fume pretreatment and treatment of oil fume. For occasions where the purification effect is not high; electrostatic deposition adopts dual-zone electrodeposition or flushing dual-zone electrostatic precipitator. The efficiency is high and the pressure drop is small, but it is difficult to clean the plate of the equipment, and the daily maintenance is very complicated, and there is still a waste liquid treatment problem when using the flushing method; there are filter cloth filters, fiber filters, etc. When passing through the filter layer, it is removed by power trapping, etc. This technology has high purification efficiency, reliable operation, and large pressure drop, but the protection time of the single layer is short; there are Venturi scrubbers, spray towers, etc. for washing. It transfers the fume from the gas phase to the liquid phase through gas-liquid contact. According to the nature of the washing liquid, it can remove the smell of oil fume at the same time. However, this technology has low purification efficiency for submicron oil fume particles, and there are also problems in the treatment of washing liquid.

Some products are troublesome to install and have a large heat loss. Some products have a high smoke exhaust rate, but the purification problem has not been solved. The oil fume is still polluting the air space and subtly endangering people's living environment.

For the use of chemical purification fume technology, the existence and treatment of the final compound has become a problem of secondary pollution and high treatment costs. Because of this, it is difficult or impossible to promote these purification technologies, basically staying in the status quo of words and ideas

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