Range hood with air-suction double-injection acceleration function

Abstract

The invention belongs to the technical field of range hoods, and discloses a range hood with an air-suction double-injection acceleration function, which is provided with a case and a fume collecting hood; a scroll is arranged in the case; an impeller and a motor are arranged in the scroll; an air outlet hood is connected onto a fume outlet on the top of the scroll; the fume collecting hood is provided with a fume inlet; the scroll is provided with a front air inlet and a rear air inlet; the range hood with the air-suction double-injection acceleration function is characterized in that a first fume channel is arranged from the initial end of a fume collecting area of the fume collecting hood to the front air inlet, a second fume channel is arranged from the initial end of the fume collecting area of the fume collecting hood to the rear air inlet, and the calibers of the two fume channels are gradually reduced in a direction from beginning to end. Because the calibers of the fume channels are gradually reduced from beginning to end, the acceleration of the airflow ascension is facilitated, the suction of the fume is accelerated, the fume suction effect is improved, and the range hood with the air-suction double-injection acceleration function is particularly applicable to home kitchens.

Description

technical field [0001] The invention belongs to the technical field of range hoods, and in particular relates to a range hood with the function of increasing the speed of suction and double ejection. Background technique [0002] The range hood has become an indispensable electrical appliance in modern families. It can not only improve the comfort of the kitchen when cooking, but also prevent the oil fume from contaminating other items in the kitchen. The current range hood usually includes a fume collecting hood, a body, and the body has an air inlet and an air outlet, and a fan is arranged inside, and a fume passage is formed between the air inlet and the air outlet, and the gas in the body is discharged by the action of the fan. At the same time, a negative pressure is formed to suck the external oil fume into the body to achieve the purpose of oil fume absorption. The cross-sectional area of ​​the existing oil fume passage has no certain rules, so as the oil fume rises,...

AI Technical Summary

Problems solved by technology

The cross-sectional area of ​​the existing oil fume passage has no certain rules, so as the oil fume rises, the flow speed of the oil fume will change in speed in the oil fume passage, especially the situation that the speed of the rear section may be slower than the speed of the front section, so that the wind pressure Parameters such as air resistance and air resistance are not conducive to the change of the suction and discharge of oil fume, so the effect of the existing oil fume exhaust machine needs to be improved

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