Range hood

A technology for range hoods and fans, applied in the field of range hoods, can solve the problems of inconspicuous noise reduction, reduced flow loss, inability to effectively change the flow field outside the fan, etc., to achieve the effect of improving smoking effect

CN110486763APending Publication Date: 2019-11-22NINGBO FOTILE KITCHEN WARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-11-22

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Abstract

The invention discloses a range hood. The range hood comprises a fan frame and a smoke collecting cover arranged below the fan frame, wherein a fan is arranged in the fan frame; the smoke collecting cover is provided with a lower oil filtering plate, an upper oil filtering plate is arranged in the position, above the lower oil filtering plate, inside the smoke collecting cover; a pressure equalizing cavity is formed between the upper oil filtering plate and the lower oil filtering plate; and a main negative pressure cavity is formed in an inner cavity of the fan frame above the upper oil filtering plate. The range hood has the advantages that the upper oil filtering plate is arranged in the position, above the lower oil filtering plate, inside the smoke collecting cover, the main negativepressure cavity is formed in the inner cavity of the fan frame above the upper oil filtering plate, and the pressure equalizing cavity is formed between the upper oil filtering plate and the lower oilfiltering plate, so that the flow field outside the fan is changed, the air inlet speeds of a strip air inlet of the range hood are uniformly distributed, that is, the negative pressure of the air inlet is uniformly distributed, and the smoking effect on the two sides of the strip air inlet is improved.
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Description

technical field

[0001] The invention relates to a range hood. Background technique

[0002] Chinese cooking will produce a lot of oily fumes. In order to keep the kitchen environment clean and the human body healthy, range hoods have become one of the essential equipment in modern home kitchens. The near-suction range hood is deeply loved by consumers because of its good smoking effect and novel appearance. The fan system of the existing near-suction range hood is usually set in the middle of the box, which makes the wind speed in the middle of the strip-shaped air inlet faster, while the wind speed at the two sides of the strip-shaped air inlet is far away from the fan. , and its inlet wind speed is relatively slow. This occurs when cooking, because the wind speed on both sides is not enough to capture the rising oil fume, causing the oil fume to escape from both sides of the range hood. At present, a common method to improve the smoking effect is to change the internal ...

Examples

Embodiment 1

[0032] Such as Figure 1 to Figure 6 As shown, the range hood of this embodiment includes a fan frame 1 and a smoke collection hood 2 located below the fan frame. A fan 3 is installed inside the fan frame 1. The fan 3 is a centrifugal fan. A lower oil filter plate 4 is installed, and under the action of the blower fan 3, the oil smoke enters the inside of the range hood after being filtered by the lower oil filter plate 4. This is the prior art and will not be described here.

[0033] The range hood of this embodiment is equipped with an upper oil filter plate 5 inside the smoke collecting hood 2, and the upper oil filter plate 5 is located above the lower oil filter plate 4, and the upper oil filter plate 5 and the lower oil filter plate 4 form a The equalizing chamber 6 and the inner chamber of the fan frame 1 above the upper oil filter plate 5 form the main negative pressure chamber 7, and the volume V1 of the main negative pressure chamber 7 and the volume V2 of the equali...

Embodiment 2

[0043] Such as Figure 7 and Figure 8 As shown, the range hood of this embodiment cancels the rear panel, and the lower panel in Embodiment 1 is replaced by a noise-reducing partition 18, that is, the rear side of the upper oil filter plate 5 is connected to the rear side of the noise-reducing partition 18 On the back plate 22 of the smoke collecting hood, in this way, the inside of the pressure equalization chamber is divided into an upper pressure equalization chamber 19 and a noise reduction chamber 20 by a noise reduction partition 18, and a noise reduction hole 181 is opened on the noise reduction partition 18. Other structures of this embodiment are the same as those of Embodiment 1, and will not be further described here.