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Centrifugal fan volute for smoke ventilator

A centrifugal fan and range hood technology, which is used in the removal of oil fume, applications, household stoves, etc., can solve the problems of oil fume gas resistance and air volume impact, and achieve the effects of reducing oil fume emissions, increasing temperature difference, and increasing oil fume volume.

Active Publication Date: 2015-09-09
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The above-mentioned range hoods equipped with oil fume interception and separation mechanisms, whether they use filter screens or water mist, will generate resistance to the oil fume gas, thus forming a certain impact on the air volume

Method used

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  • Centrifugal fan volute for smoke ventilator
  • Centrifugal fan volute for smoke ventilator

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] see figure 1 and figure 2 , a centrifugal fan volute for range hoods. The volute is widely used in the field of impeller machinery, and it not only plays the role of collecting and diffusing pressure, but also has the function of cooling and intercepting high-temperature fluid.

[0015] The volute includes a ring wall and an air outlet 9 formed between the circumferential ends of the ring wall, wherein the ring wall includes an inner ring wall 1 and an outer ring wall 2 (inner and outer refer to the radial direction), so that the inner ring An annular cooling circulation channel 3 is formed between the wall 1 and the outer ring wall 2. In the centrifugal fan used for the range hood, the high-temperature oil fume is thrown to the inner ring wall 1 of the volute by centrifugal force, collides with the inner ring wall, and is condensed ...

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Abstract

The invention discloses a centrifugal fan volute for a smoke ventilator. The centrifugal fan volute comprises an annular wall and an air outlet formed in the periphery of the annular wall. The annular wall comprises an inner annular wall and an outer annular wall, and a cooling circulation channel is formed between the inner annular wall and the outer annular wall. A plurality of baffles are arranged in the air outlet at intervals; the air outlet is divided by the baffles for forming at least one main airflow channel; the baffles are hollow and are provided with cooling parts; two ends of each baffle communicate with the end part, adjacent to the air outlet, of the cooling circulation channel, so that a closed fluid path is formed by the baffles and the cooling circulation channel. A channel for flow circulation is formed in the annular wall of the volute; the temperature of the annular wall of the volute is reduced; and the temperature difference between smoke and the annular wall of the volute is increased, so that the amount of smoke intercepted by the annular wall is improved; the fat separation degree of the smoke ventilator is improved; the smoke discharging amount of the smoke ventilator is lowered; and the air pollution is reduced. The interception process does not cause resistance to the air flow, so that the volume of air through the volute is ensured.

Description

technical field [0001] The invention relates to a range hood, in particular to a centrifugal fan volute for the range hood. Background technique [0002] Catering oil fume has caused a certain degree of air pollution. At present, the country is calling for the improvement of atmospheric conditions, and it is very important to improve the oil fume filtering ability of range hoods. [0003] Existing oil fume interception technology mainly contains two types. The first type is to utilize filter screens, such as a new type of range hood disclosed in Chinese patent application No. 200610031989.8, which includes an exhaust chamber arranged on the top of the body The air inlet chamber at the lower part is connected to the air duct of the air inlet chamber and the exhaust chamber, and the air inlet and the air duct are provided with a filter plate for absorbing and filtering oil smoke; another example is a range hood disclosed in Chinese patent application No. 201310081090.2 The sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 李志峰陈漪李斌茅忠群诸永定
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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