Rang hood and exhaust fume collecting hood for range hood

Abstract

The invention relates to an exhaust fume collecting hood for a range hood and the range hood with the exhaust fume collecting hood. The exhaust fume collecting hood comprises a shell, wherein the shell is internally provided with a separating chamber; and the shell is provided with an air intake and an air outlet which are communicated with the separating chamber. The exhaust fume collecting hoodis characterized in that the structure of the separating chamber can be used for realizing that the fume in the form of vortex-type rotary can be exhausted from the separating chamber after entering into the separating chamber from the air intake, and the outlet of the separating chamber is communicated with the air outlet. Compared with the prior art, the exhaust fume collecting hood has the advantages that the fume can be in the form of high-speed vortex-type rotary state in the separating chamber after entering into the separating chamber from the air intake, thus generating strong centrifugal force; and because liquid in the fume is heavier than gas in the fume, the liquid is thrown to the inner wall of the separating chamber along with the centrifugal force, thus only the gas are left in the central zone of the separating chamber, and are exhausted from the air outlet, thereby reaching the purpose of efficient separation of the fume, keeping cleanness and smoothness of a draught fan system, and prolonging cleaning period and service life.

Description

technical field [0001] The invention relates to a fume collecting hood for a range hood and a range hood using the above-mentioned fume collecting hood. Background technique [0002] The lampblack produced by kitchen operations will seriously damage the health of the human body. For this reason, the range hood is one of the indispensable appliances in modern kitchen furniture. At present, the common oil and gas separation device of the range hood generally adopts a single-layer or multi-layer filter screen (metal mesh or plastic screen) placed in the shield of the air inlet of the range hood. When the oil fume passes through the single-layer or multi-layer filter screen, it is filtered Separate the oil droplets. The filter hole of the filter device with this structure cannot be made infinitely small, and the separation efficiency of the flue gas containing water vapor, oil droplets and tiny solid particles is low, and the filtered gas is directly discharged outdoors, which ...

AI Technical Summary

Problems solved by technology

The filter holes of the filter device with this structure cannot be made infinitely small, and the separation efficiency for the flue gas containing water vapor, oil droplets and tiny solid particles is low, and the filtered gas is directly discharged outside, which will still pollute the environment and further pollute at the same time Fan system

Moreover, when the flue gas is filtered by the filter screen, the oil droplets will adhere to the grid, which will increase the resistance of the fluid flow after a long time, and will also increase the output power of the motor, increase the power consumption of the range hood, and increase the noise. The filter is difficult to clean

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