Range hood with auxiliary air inlet channel

Abstract

The invention provides a range hood with an auxiliary air inlet channel. An oil filtering plate is installed on the front face of a cooking fume collecting cover. Main air inlets are formed in the oil filtering plate, and the oil filtering plate of the range hood is obliquely arranged towards the rear lower side from top to bottom. Auxiliary air inlets are formed in at least one of an area adjacent to the upper side edge of the oil filtering plate and an area adjacent to the lower side edge of the oil filtering plate. The auxiliary air inlets are in a long bar shape and are transversely through. Due to the fact that the auxiliary air inlets of the range hood are continuous and uninterrupted air inlet channels, the defect that gate-hole-shaped main air inlets are interrupted and not continuous can be overcome, and the air inlet area can be enlarged and a cooking fume path can be changed through the auxiliary air inlets. In addition, the included angle alpha between the oil filtering plate and the horizontal plane is designed to be larger than or equal to 18 degrees and smaller than or equal to 30 degrees, and under the condition that negative-pressure covering angles are the same, the negative-pressure covering area of a cooking bench is larger; and furthermore, after the auxiliary air inlets are arranged, the phenomenon that negative pressure is weakened and cooking fume escapes due to the fact that the inclination angle of a cooking fume guide plate relative to the horizontal plane becomes smaller can be effectively avoided, and therefore the cooking fume absorbing effect is improved.

Description

technical field [0001] The invention relates to a range hood, in particular to a range hood with an auxiliary air inlet channel. Background technique [0002] The air inlet of the near-suction range hood mostly adopts a grille structure. The grille can not only filter some large particles of oil fume, but also reduce the air intake area of ​​the air inlet of the range hood. In addition, the aesthetics of the grille structure is relatively high. Good and good oil guide effect. There are the following problems in the existing near-suction range hood using the grille: 1. The grid hole of the grille is only used as the air inlet, and there is no other way of air intake; 2. If Figure 8 As shown, the grid holes of the grille are discontinuous at intervals, A is the air inlet, and B is the closed area between two adjacent air inlets, the oil fume rising to A will be smoother than the air inlet at B , so the oily fume at B will escape more easily; 3. The air intake area of ​​the g...

AI Technical Summary

Problems solved by technology

There are the following problems in the existing near-suction range hood using the grille: 1. The grid hole of the grille is only used as the air inlet, and there is no other way of air intake; 2. If Figure 8 As shown, the grid holes of the grille are discontinuous at intervals, A is the air inlet, and B is the closed area between two adjacent air inlets, the oil fume rising to A will be smoother than the air inlet at B , so the oily fume at B will escape more easily; 3. The air intake area of ​​the grille is always limited, and the existing grille form cannot change the path when the oily fume rises, and there is still the phenomenon of oily fume escaping

[0004] Existing common near-suction range hoods such as Figure 9 and Figure 10 As shown, the inclination angle of the oil filter plate a and the smoke deflector b is the same, and part of the oil fume near the upper side of the oil filter plate a will escape upwards, and the angle γ between the oil filter plate a and the horizontal plane is usually greater than 45°, which is common There are 45° and 60°. The larger the γ angle, the smaller the negative pressure coverage area of ​​the cooktop c when the negative pressure coverage angle θ of the range hood is equal. It can be seen that this existing near-suction oil suction The hood does not consider the influence of the negative pressure distribution on the effect of the range fume, resulting in a relatively poor range fume effect

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