Air curtain type range hood

Abstract

The invention relates to an air curtain type range hood, which comprises a machine body provided with an oil smoke suction inlet, and is characterized in that an air curtain mechanism is arranged on the outer side of the oil smoke suction inlet, an air inlet is arranged on the machine body, the air curtain mechanism is provided with an air outlet, the air inlet and the air outlet are in fluid communication through an air outlet channel, and an air outlet fan is arranged in the air outlet channel. And a driving mechanism for driving the air curtain mechanism to do lifting motion is arranged in the machine body. The air curtain type range hood has the advantages that the air curtain mechanism of the air curtain type range hood can be driven by the driving mechanism to ascend and descend, the rotation angle of the driving motor is detected in real time through the control panel according to the output signal of the detection circuit, and then the ascending and descending distance of the air curtain mechanism can be accurately obtained and controlled; in addition, the air outlet angle of the air curtain can be accurately controlled, and therefore a good oil smoke diffusion prevention effect can be achieved under different working conditions.

Description

technical field [0001] The invention relates to a range hood, in particular to an air curtain type range hood. Background technique [0002] At present, the overall installation height of the European-style range hood determines that the range hood is far away from the pot that produces the oil fume, and the negative pressure loss is relatively large. Also, traditional range hoods cannot suck the fumes back once they leave the area. In order to improve the range hood effect of the range hood, people have improved the structure of the range hood, and the usual method is to improve the fan system of the range hood, such as increasing the power of the fan, such as improving the structure of the impeller, etc. etc. Although this improvement can effectively improve the range hood's range hood effect, it needs to improve the structure of the entire fan system, which is not only more complicated, but also cannot improve the distribution of the negative pressure area when the range...

AI Technical Summary

Problems solved by technology

Although the above-mentioned range hood equipped with a cross-flow fan has the above-mentioned advantages, this energy-saving and environmentally friendly high-efficiency side-suction range hood is only suitable for occasions where a rectifying plate is not installed in the fume hood. Installing a cross-flow fan on the edge of the fume hood not only cannot greatly improve the suction rate of the range hood, but will destroy the negative pressure distribution under the fume collection hood, resulting in a decline in the fume suction effect

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