Volute for extractor hood

Abstract

The invention discloses a volute for an extractor hood. A volute air flue is arranged in the volute. The volute is provided with a volute air inlet and a volute air outlet. The volute comprises a fixed shell and a movable shell. The movable shell can move between the closing position and the opening position relative to the fixed shell. When the movable shell is located at the closing position, the fixed shell is matched with the movable shell, and air in the volute air flue is allowed to be discharged out of the volute air outlet. When the movable shell is located at the opening position, the movable shell is staggered relative to the fixed shell, so that a volute circulation air outlet is limited between the movable shell and the fixed shell. The volute circulation air outlet is arranged to allow air in the volute air flue to be discharged towards the indoor part through the volute circulation air outlet. According to the volute for the extractor hood, the flowing distance of air when the extractor hood exhausts towards the indoor part can be shortened.

Description

technical field [0001] The invention relates to the field of kitchen utensils, in particular to a volute for a range hood. Background technique [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 lifted, there will be a high-frequency airflow whistling sound, and the sound quality is poor. Contents 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. For this...

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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