Fan volute structure with air inlets on double sides for European-style smoke exhaust ventilator
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A range hood and air intake technology, which is applied in the field of parts and components to achieve high wind pressure, low static pressure loss, and high efficiency
Active Publication Date: 2008-02-27
NINGBO FOTILE KITCHEN WARE CO LTD
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The design of the different curvature radii of the upper and lower shell edge contours of the fan volute at the volute tongue cannot be fully applied to the fan volute of the European range hood. For the fan volute of the European range hood that can enter the air from both sides, The radius of curvature needs to be redesigned
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] As shown in Figures 1 to 5, the fan volute structure of the European-style range hood capable of double-sided air intake includes a front cover 1, a rear cover 2 and an annular intermediate casing 3 connecting the two. Both the front cover 1 and the rear cover 2 are provided with air inlets 11, 21, and the front cover 1 and the rear cover 2 have an asymmetric structure at the volute tongue, and the middle housing 3 there The two are connected by a continuous and smooth transitional twisted surface; the actual application state of the fan volute structure is shown in Figure 1 and Figure 2, 4 is the fan cover, 5 is located between the front cover 1 and the rear cover 2 Between the impeller, the motor 6 driving the impeller 5;
[0025] As shown in Figure 6 and Figure 7, ① The edge profile of the front cover 1 is sequentially tangent and s...
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Abstract
The invention discloses a wind engine volute of Europe-type kitchen ventilator, which can adsorb wind via two surfaces. Wherein, the edge of front cover plate (1) is formed by a straight line (AB), several arcs (BC, CD, DE, EF, FG, GH), a straight line (GH), several arcs (HJ, JK) and straight lines (KL, LA); the edge of back cover plate (2) is formed by a straight line (A'B'), several arcs (B'C, C'D', D'E', E'F', F'G, G'H'), a straight line (GH'), several arcs (H'J', J'K') and straight lines (K'L', L'A'); the ratio between the radius of edge (JK) at the volute tongue of front cover plate (1) and the edge radius of edge (J'K') at the volute tongue of back cover plate (2) is 8-18.5. Compared to present technique, the invention has different curves at the edges of front and back cover plats, to control the separation of airflow when passes through the volute to confirm high efficiency, and reduce the rotary noise.
Description
technical field [0001] The invention relates to a component structure of a range hood, in particular to a fan volute structure of a European-style range hood capable of double-sided air intake. Background technique [0002] Now, range hoods have become one of the essential kitchen appliances in ordinary families. At present, European-style range hoods are favored by more and more consumers because of their neat and light appearance and small footprint. European-style range hoods generally include a range hood cover, a fan cover located on the cover and perpendicular to it, a fan volute inside the fan cover, an impeller and a motor driving the impeller, wherein the fan volute includes a front cover and a rear cover. The plate and the ring-shaped intermediate shell connecting the two, the front cover is provided with an air inlet, the rear cover is provided with a motor, and the impeller is located between the front and rear cover. The biggest difference between the European-...
Claims
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