High-grease-separation-degree extractor hood and built-in spiral separation device thereof

Abstract

The invention provides a high-grease-separation-degree extractor hood and a built-in spiral separation device thereof. The built-in spiral separation device comprises an inner shell, a cylinder and spiral plates; the inner shell is connected with the interior of an outer shell of an overall machine of the extractor hood; the outer edge of the upper end of the inner shell and the interior of the outer shell of the overall machine are in sealed connection, a ventilating duct for smoke discharging is formed in the middle portion of the inner shell, and a flue is formed by the outer side of the inner shell and the outer shell of the overall machine; the top of the cylinder is connected with the inner shell, at least one ventilating opening is formed in the periphery of the top of the cylinder, and the bottom of the cylinder is closed and is provided with an oil collecting pipe; the cylinder is vertically fixed into the flue and divides the flue into an outer side flue close to the outer shell of the overall machine and an inner side flue close to the inner shell; the outer side flue is communicated with a smoke inlet of the extractor hood, and the inner side flue is communicated with the ventilating duct; and the spiral plates are fixedly installed on the inner side and the outer side of the cylinder correspondingly. The smoke inlet of the extractor hood is communicated with a smoke outlet of the extractor hood through the outer side flue, the ventilating openings, the inner side flue and the ventilating duct in sequence.

Description

technical field [0001] The invention relates to a range hood, in particular to a range hood with high oil separation degree and a built-in spiral separation device thereof. Background technique [0002] There are often grease residues on the fan wheel of the range hood, which not only affects the efficiency of the range hood, but also causes a large amount of grease particles and pollutants in the exhaust gas, affecting the environmental quality. In the new national standard GB / T17713-2011 of "Cooker Hood" promulgated in 2012, specific index requirements were put forward for the degree of grease separation, indicating that the degree of grease separation has formally become an important indicator for evaluating the performance of range hoods, and has become more and more popular. The attention of production enterprises and user groups. How to improve the separation degree of oil has become one of the important contents of the technical development and performance evaluation...

AI Technical Summary

Problems solved by technology

In addition, it is easy to cause more grease droplets to adhere to the inside of the range hood, which affects the emission of oil fume, increases the noise and vibration of the range hood, and in severe cases will shorten the life of the range hood components and affect the safety of use.

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