Range hood

Abstract

The invention discloses a range hood. The range hood comprises a shell, an first cyclone separator and a flow guide pipe, wherein the shell is internally provided with an impeller; and the first cyclone separator is arranged in the shell, a first air inlet of the first cyclone separator is suitable for oil fume to enter, a first air outlet of the first cyclone separator communicates with the impeller, and a first dirt discharge hole is formed in the bottom of the first cyclone separator and is suitable for discharging oil dirt outwards. The invention discloses an air-cooled refrigerator defrosting control system supporting big data continuous optimization and a method. The method comprises the steps that a refrigerator control module obtains initial defrosting parameter variables and refrigerator state parameters of refrigerators and uploads the parameters to a big data processing module; Thus, according to a principle of the cyclone separator, in a rotation process, liquid oil drops are thrown to the periphery due to the fact that the density is larger than that of gas and the liquid oil drops bear larger centrifugal force, the liquid oil drops are discharged downwards from the first dirt discharge hole along the inner wall of the cyclone separator under the combined action of downward airflow and gravity, and clean airflow without the liquid oil drops is upwards led out from the center of the cyclone separator, so that the oil-fume separation effect is achieved. Therefore, the liquid oil dirt cannot be attached to the inner side part and the inner surface of the range hood, and the cleanliness of the interior of the range hood is improved.

Description

technical field [0001] The invention relates to the technical field of range hoods, in particular to a range hood. Background technique [0002] When the existing range hood absorbs the oil fume, the air and the oil fume will be sucked into the impeller at the same time, and then discharged to the outside through the exhaust pipe. However, during use, due to the low fume separation degree of the range hoods currently on the market, the low gaseous fume will condense into liquid oil stains after contacting the impeller and adhere to the inner parts and inner surfaces of the range hood, resulting in smoke. The inside of the hood is covered with oil, which seriously affects the range hood efficiency, operational reliability and service life. [0003] In order to improve the oil fume separation efficiency of the hood, a range hood is disclosed in the reference document, which includes: a housing, a fan, a fume collection hood and an oil cup, the upper part of the housing is con...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that after the oil fume from the outside enters the cyclone separator in the prior art, its trajectory inside the cyclone separator is relatively scattered, which leads to small contact area with the cyclone separator Insufficient thermal efficiency, thus providing a range hood

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