An oil filter device and its rotating collision oil filter structure

Abstract

The invention provides a rotary collision oil filtering structure. The rotary collision oil filtering structure comprises a plurality of rotary collision oil filtering units which are arrayed in parallel, wherein each rotary collision oil filtering unit comprises an upper filtering plate and a lower filtering plate; seen from the cross section, each lower filtering plate comprises a bottom plate, and a third side wall, a second side wall and an intercepting wall which are arranged on the bottom plate; each upper filtering plate comprises an arc-shaped top wall which is reversely buckled above the second side wall; one end of each arc-shaped top wall is located between each second side wall and each third side wall and the end part of each arc-shaped top wall is higher than each intercepting wall and is crossed with each second side wall by the tangent line of the end part of the end; the other end of each arc-shaped top wall is located on the outer side of each second side wall and each first side wall extends downwards from the end part; the connection part of each first side wall and each arc-shaped top wall is in smooth transition; the invention further discloses an oil filtering device applying the rotary collision oil filtering structure. The rotary collision oil filtering structure is used for carrying out a plurality of times of separation so that the amount of oil in cooking fume gas is greatly reduced and the cooking fume separation effect of a cooking fume filtering device is effectively improved; meanwhile, the amount of the oil entering a draught fan system is reduced and the cleaning difficulty of daily maintenance is reduced.

Description

technical field [0001] The invention relates to the field of range hoods, in particular to an oil filter device for range hoods and a rotating collision oil filter structure thereof Background technique [0002] Oil fume is composed of oil mist formed by volatilization or splashing of oil at high temperature and substances oxidized and cracked by oil. It not only affects people's living environment, but also contains many harmful components in oil fume, such as: benzopyrene, volatile nitrous acid , Heteroamine compounds, etc. are highly toxic carcinogens, which will cause great harm to human health. The oil fume filter device in the existing range hood generally includes a filter screen / plate arranged at the air inlet and a fan system installed inside the range hood. Separation, and finally the filtered gas is discharged from the air outlet. Since the filtering capacity of the filter / plate at the air inlet is inversely proportional to the wind resistance, in order to reduc...

AI Technical Summary

Problems solved by technology

The air volume loss of this device is more than 20%, and it can only be used in traditional products with the air inlet facing downwards. It is difficult to apply to European-style range hood products, and there will be an unpleasant sound when used; at the same time, the grease of the device The separation ability is affected by the rotation speed and wind speed. If the back pressure at the outlet is large, the separation effect will be greatly affected. The back pressure at the outlet is affected by different buildings, and it is difficult to control the product. And the device After a long time of use, grease will accumulate on the filter disc, which will greatly increase the air intake resistance and greatly affect the range hood's oil absorption performance. Since the separation device and the motor are installed together, consumers cannot maintain it by themselves and need a professional. On-site maintenance by the company increases the cost of use

The Chinese invention patent "Cyclone Oil Fume Filter" with the publication number CN101676013A discloses a metal plate that is bent to make the oil fume gas flow asymmetrically, and the asymmetric flow causes a vortex, and the rotating air flow has a strong The centrifugal force separates the oil fume gas, but this kind of oil fume filter only separates the oil fume once, the efficiency of filtering oil fume is limited, and the bent channel is formed after the metal plate is bent, and the centrifugal force cannot be used to effectively separate the oil fume , there will still be a large number of grease particles entering the fan system after passing through the filter, and due to the bending shape restriction, the oil fume cannot be fully separated, and a large number of grease particles will remain in the filter, which increases the daily maintenance of the range hood difficulty

The oil fume filtering device in the Chinese invention patent "A Oil Fume Filtering Device" with the authorized notification number 101033865B includes at least two layers of filter plates, and the filter plates have ventilation holes, and the ventilation holes on the adjacent two layers of filter plates are arranged in a misplaced position. And the periphery of the ventilation hole is formed with flanging, and the direction of the flanging of the ventilation hole on all the filter plates is towards the inside of the range hood. The range hood system has the advantages of maintenance-free time, etc., but the filter device uses surface filtration to make the fume gas collide with the surface of the filter plate and condense during movement. Although the filtering effect is better than that of the single-layer plate filter, due to the It contains a variety of components, and the densities of the various components are different, so that the fume gas is stratified. Therefore, a large amount of fume gas is not filtered and enters the fan system during the collision with the filter plate, and some oil droplets condense and accumulate on the filter bar. increase the difficulty of daily maintenance and cleaning

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