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Rotational flow assisting device of extractor hood

An auxiliary device and the technology of range hoods, which are applied in the field of range hoods, can solve problems such as poor anti-interference performance and the effect of range hoods, and achieve the effects of improving smoke collection and control, anti-interference capabilities, and solving poor range hood capabilities

Active Publication Date: 2017-04-26
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned top-suction range hood has the advantages of being classic and beautiful, but also due to the limitation of installation size, the height from the stove top is required to be 650-750cm, and it is known that the flow velocity is twofold with the increase of the distance from the suction port. Sub-power attenuation, so it has a great impact on the effect of oil fume, and the anti-interference is poor, and needs to be further improved

Method used

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  • Rotational flow assisting device of extractor hood
  • Rotational flow assisting device of extractor hood
  • Rotational flow assisting device of extractor hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see Figure 1 to Figure 6 , a range hood, comprising a smoke collecting hood 1, a fan cover 2 and a fan cover 3, a centrifugal fan is arranged in the fan cover 2, the fan cover 3 is arranged outside the fan cover 2, and between the fan cover 2 and the fan cover 3 A sandwich is formed. For ease of description, in this specification, "upstream" refers to the upstream of the oil fume flow path, and "downstream" refers to the downstream of the oil fume flow path.

[0036] An air inlet 11 is opened on the fume collecting hood 1 , and an auxiliary device 4 for improving the efficiency of oil fume suction is arranged below the air inlet 11 , that is, upstream of the air inlet 11 . Auxiliary device 4 comprises air outlet device 41, air guide pipe 42 and the auxiliary blower fan 43 that is used to generate air-flow, and air guide pipe 42 is used for guiding air-flow to air outlet device 41 from auxiliary blower fan 43, and air outlet device 41 guides air guide pipe 42 guided a...

Embodiment 2

[0045] see Figure 8 ~ Figure 11 , in this embodiment, the difference from Embodiment 1 is that the air outlet of the air outlet device 41 extends around the axis X, including the first air outlet 4141 arranged upstream and the second air outlet downstream 4142, in order to form two swirls in different directions, further improving the effect of oil absorption.

[0046] In addition, in this embodiment, the first end wall 415 is not connected to the first end of the inner wall 412, and the first end wall 415 is inclined to extend a certain distance upstream and away from the axis X direction near the first end of the inner wall 412. The first outer wall 4144 is formed, and the inner side wall 412 is the same. At the first end, it extends upstream and away from the axis X direction for a certain distance to form the first inner wall 4145. The inclination direction and angle of the first outer wall 4144 and the first inner wall 4145 Similarly, the above-mentioned first air outle...

Embodiment 3

[0054] see Figure 12 , in this embodiment, the difference from Embodiment 2 is that the air outlet device 41 only has the first air outlet nozzle 4141 that forms an upward swirling flow, and at this time the second end wall 416 connects the outer wall 411 and the inner wall 412 are connected and closed.

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Abstract

The invention discloses a rotational flow assisting device of an extractor hood. The rotational flow assisting device of the extractor hood is characterized in that the device comprises an annular air outlet device which extends around an axis, the air outlet device comprises an air storage cavity and an air outlet nozzle communicating with the air storage cavity, and the air outlet nozzle is designed to enable airflow jetted by the air outlet device to form a rotational flow field. Through design of the rotational flow assisting device, the jetted airflow can form rotational flow so as to drive upstream lampblack airflow; the rotational flow assisting device is arranged at the upstream position of an air inlet of the extractor hood and matched with a main draught fan in a draught fan hood, so that the distance between the extractor hood and the stove surface is decreased while inward suction force is formed, the smoke gathering and controlling capacities and the anti-interference capacity are improved, and the problem that the extractor hood is poor in oil fume extraction capacity is solved essentially.

Description

technical field [0001] The invention relates to a range hood, in particular to a swirl auxiliary device for the range hood. Background technique [0002] The range hood has become one of the indispensable kitchen appliances in modern families, and it is used to exhaust the oil fume produced during the cooking process of the stove. Generally, range hoods include top-suction and side-suction types, and top-suction range hoods are more and more widely used due to their neatness, lightness, and small footprint. The top-suction range hood usually includes a fume collecting hood, a fan casing positioned on the fume collecting hood, and a centrifugal fan is installed in the fan casing. [0003] Commonly used top-suction range hoods, such as a range hood disclosed in Chinese Patent Application No. 201410704669.9, include a smoke collection hood with an air suction port, a wind cabinet arranged on the top of the smoke collection The fan with a volute inside, through the action of t...

Claims

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Application Information

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IPC IPC(8): F24C15/20
Inventor 陈浩辉李斌李志峰边乐超黄友根茅忠群诸永定
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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