Oil filter device for range hood

Abstract

The invention discloses an oil filter device for a range hood, characterized by that: the oil filter device is provided with a first oil filter, a second oil filter, and a third oil filter from the outer side to the inner side of the range hood, the first oil filter, the second oil filter, and the third oil filter are respectively provided with a first air vent, a second air vent, and a third airvent, the periphery of the first air vent is provided with a first flanging that is closed annular toward the inner part of the range hood, the second air vent is provided with a second n-shaped flanging that is opened at low end relatively toward the inner part of the range hood, a side of the third air vent along with the length direction and the side of the upper end at a relative high position are respectively provided with third flangings toward the outer part of the range hood, the first and second air vent along with the width direction are arranged with staggering each other, the third air vents are arranged right above the first and second air vent, and the third air vents completely cover one of the first and second air vent corresponding underneath. According to the invention, the wind damage is reduced, the suction efficiency is improved, the noise is reduced, and oil dripping is prevented.

Description

technical field [0001] The invention relates to a range hood, in particular to an oil screen device for the range hood. Background technique [0002] At present, there are mainly the following types of oil screen devices used for range hoods: [0003] The first type: the outer layer adopts the oil guide column, and the inner layer adopts the form of dense filter net. This kind of oil net structure is easy to cause the dense filter net to be clogged, and it is easy to cause the oil net to drip oil when the inclination angle of the oil net is not enough; [0004] The second type: double-layer tile structure (such as figure 1 As shown), the air intake resistance of this oil net structure is very large, which makes it difficult to increase the air volume of the range hood and makes a lot of noise; [0005] The third type: double-layer "U"-shaped oil net structure in the same direction (such as figure 2 As shown), this kind of oil net structure is a semi-circular thin plate s...

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Problems solved by technology

[0003] The first type: the outer layer adopts the oil guide column, and the inner layer adopts the form of dense filter net. This kind of oil net structure is easy to cause the dense filter net to be clogged, and it is easy to cause the oil net to drip oil when the inclination angle of the oil net is not enough;

[0004] The second type: double-layer tile structure (such as figure 1 As shown), the air intake resistance of this oil net structure is very large, which makes it difficult to increase the air volume of the range hood and makes a lot of noise;

[0005] The third type: double-layer "U"-shaped oil net structure in the same direction (such as figure 2 As shown), this kind of oil net structure is a semi-circular thin plate structure. When the air flow passes by, a large number of eddy currents will be generated on the back of the "U" shape, resulting in a decrease in the suction efficiency of the range hood and an increase in noise;

[0006] The oil net of the range hood is used as the air inlet of the range hood, and it is also the divergence port of the internal noise of the range hood. The above oil net structures do not have the function of noise reduction and noise reduction, resulting in the noise reduction of the range hood.

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