volute for range hood

Abstract

The invention discloses a volute for a range hood, the volute has a volute air duct inside, the volute includes a fixed shell part and a moving shell part, and the moving shell part is opposite to the fixed shell part It is movable, and when the moving shell part moves to an open position relative to the fixed shell part, a volute circulating air outlet is defined between the moving shell part and the fixed shell part, and the volute circulating air outlet is set To allow the wind in the volute air channel to be discharged to the room through it, wherein when the movable shell part is in the open position, the shortest distance between the movable shell part and the wind wheel located in the volute air channel L satisfies the relational formula: 5mm≤L≤30mm. According to the volute for the range hood of the present invention, the flow distance of the wind when the range hood exhausts indoors can be shortened, and the output volume of the range hood is suitable when the range hood exhausts indoors, and the pressure of the wind in the volute air duct can be reduced. The mobile housing can be pressed back to the closed position under suitable conditions.

Description

technical field [0001] The invention relates to the field of kitchen appliances, in particular to a volute for a range hood. Background technique [0002] In the related art, although the range hood can achieve indoor exhaust and outdoor exhaust, when exhausting indoors, the internal circulation air duct is too long, resulting in a large loss of air volume and air pressure. The size of the left and right sides of the machine is large and the cost is high; because the switching plate is opened and closed in the direction of the outer spiral of the volute, in the closed state, the wind pressure in the volute air duct will push up the moving shell, especially in the high-grade wind pressure. When the connection gap is raised, a high-frequency airflow whistle will appear, and the sound quality is poor. SUMMARY OF THE INVENTION [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present i...

AI Technical Summary

Problems solved by technology

[0002] In the related art, although the range hood can exhaust indoors and outdoors, when exhausting indoors, the internal circulation air duct is too long, resulting in a large loss of air volume and wind pressure, while the range hood of the double fan The left and right dimensions of the machine are large and the cost is high; since the switching plate is opened and closed toward the spiral direction of the volute, in the closed state, the wind pressure in the air duct of the volute will lift up the moving shell, especially at the high-end position. When the connection gap is raised, there will be a high-frequency airflow whistling sound, and the sound quality is poor.

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