a range hood

A range hood and oil cup technology, applied in the field of range hoods, can solve the problem of high noise of range hoods, and achieve the effects of reducing noise radiation to the outside, rational air duct structure, and eliminating hedging losses.

Active Publication Date: 2018-07-17
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the turbulence noise of the range hood is directly generated by the centrifugal fan, it mainly comes from the air intake at the air inlet of the centrifugal fan. If the oil fume flow in the oil fume channel in front of the air inlet of the centrifugal fan is chaotic, it will increase the noise caused by turbulence. Conditions, resulting in louder noise from the range hood

Method used

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] see Figure 1 to Figure 4 , a range hood, comprising a smoke collection hood 1, a box 2 arranged above the smoke collection hood 1, a fan 3 is arranged in the box 2. An air inlet 11 is provided on the fume collecting hood 1, so that the fan 3 in the box body 2 can suck oily fume into the box body 2 through the air inlet 11 and discharge it to the public flue. An oil cup 6 is arranged at the rear bottom of the fume collecting hood 1 .

[0028] The air inlet 11 is provided with a diversion and muffler device 4 and a filter screen 5, wherein the diversion and muffler device 4 is in the shape of a cone with a small top and a large bottom, such as a cone or a square cone, extending from the bottom of the air inlet 11 into the box body 2 and the filter screen 5 is fixed below the air inlet 11.

[0029] see Figure 5 ~ Figure 7 , The diver...

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Abstract

The invention discloses an extractor hood. The extractor hood comprises an exhaust fume collecting hood body and a box body arranged above the exhaust fume collecting hood body, and an air inlet is formed in the exhaust fume collecting hood body. The extractor hood is characterized in that a flow guide silencing device extending into the box body is arranged at the air inlet and comprises a flow guide cone outer layer and a flow guide cone inner layer which is arranged in the flow guide cone outer layer and used for silencing; and the flow guide silencing device is shaped like a big-bottom-down cone. The flow guide silencing device extending into the box body is arranged at the air inlet and can guide exhaust fume to flow along the lateral wall of the flow guide silencing device, so that eddies and flow separation in exhaust fume flow are reduced, and an air channel structure in the box body is more reasonable and smoother. Meanwhile, the hedging loss caused when exhaust fume flow enters from the four sides is eliminated, part of noise conducted and radiated from the air inlet can be eliminated, and the purpose of noise reduction is achieved.

Description

technical field [0001] The invention relates to kitchen appliances, in particular to a range hood. Background technique [0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Generally, range hoods include top-suction and side-suction types. Top-suction range hoods are neat, light, and take up less space. It has more and more widespread applications. The top-suction range hood usually includes a fume collection hood, a fan casing positioned on the fume collection hood, and a volute, an impeller and a motor for driving the impeller are 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 the fan, discharges the gas in the air cabinet and forms a negative pressure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C15/20
CPCF24C15/20F24C15/2035
Inventor 刘逸梁雪斐周佳杰王青山茅忠群诸永定刘戈
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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