Oil smoke filtering assembly reticular lamina

Abstract

The invention discloses an oil fume filtration combination screen. An air inlet screen comprises an air inlet eye array, the perimeter of each air inlet eye extends towards the inner side of the air inlet screen to form air conduction rings with the top part being opened and thus an air conduction ring array is formed; an air outlet array is arranged on an air outlet screen, the perimeter of each air outlet eye extends towards the inner side of the air outlet scrren to form folded air rings with the bottom part being opened and thus a folded air ring array is formed; each four adjacent folded air rings which are arranged in a quadrilateral way and the bottom wall of the air outlet screen arranged among the folded air rings form a convoluted air chamber, all convoluted air chambers form a convoluted air chamber array which is corresponding to the air conduction rings on the air inlet screen, a clearance is arranged between the air conduction rings and the convoluted air chamber to form an annular air duct; the air inlet openings, the air conduction rings, the convoluted air chambers and the air outlet openings arranged at the perimeter of the convoluted air chambers form a bent air flow duct. The oil fume forms complicated three-dimensional diffusion flow in the bent air flow duct, so the probability of the oil fume atoms are thrown and attached towards the edge of the air flow duct and the purification effect is improved.

Description

technical field [0001] The invention relates to a range hood, in particular to an oil fume filtering combined net plate. Background technique [0002] One of the main technical problems of the range hood at present is exactly how to improve the filtering effect to the lampblack, and improving the structure of the filter screen is an important means to effectively solve this problem. At present, the air inlet panel and the oil and gas filter screen of most range hoods are separated, which makes the installation complicated and not conducive to cleaning. The patent No. 02127948.9 oil fume purifier proposes a kind of oil fume filter plate that integrates the air inlet panel and the oil and gas filter. The oil fume filter plate includes a front plate and a rear plate. There is an air outlet on the top, and the air inlet and the air outlet are arranged in a staggered interval. The air inlet of the front plate is provided with a front wing, and the air outlet of the rear plate is...

AI Technical Summary

Problems solved by technology

The solution provided by this patent greatly overcomes the problems of complex installation and difficult cleaning of traditional range hoods. However, in the lampblack filter plate, there is a turning air intake channel formed between the air inlet, front wing, rear wing, and air outlet. The structure of the filter is simple, and the airflow field is approximately a simple two-dimensional flow field, which affects the purification effect of the inhaled oil fume. With the continuous improvement of the national oil fume emission standards, it is required to further improve the purification ability of the filter.

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