a range hood

Abstract

The invention discloses a range hood, which comprises a smoke collecting hood, a fan frame arranged above the smoke collecting hood and a fan system arranged in the fan frame, the fan system includes a volute, and the smoke collecting hood includes a left side wall and a fan frame. On the right side wall, the range hood also includes an anti-smoke device arranged in the smoke collecting hood and the fan frame. The anti-smoke device includes a first duct, a first blowing part, a second duct and a second blowing part. One end of a conduit communicates with the fluid in the volute, and the other end extends to the left side wall; one end of the second conduit communicates with the fluid in the volute, and the other end extends to the right side wall, and the left side wall corresponds to the end of the first conduit Opening, the right side wall is open at the position corresponding to the end of the second conduit, the first blowing part is arranged in the end of the first conduit close to the left side wall, and the second blowing part is arranged in the end of the second conduit close to the right side wall , the first blowing part and the second blowing part both have a retracted state, and an unfolded state that unfolds to the outside of the smoke collecting hood under the action of pressure in the corresponding duct.

Description

technical field [0001] The invention relates to a cooking fume purifying device, in particular to a range hood. Background technique [0002] Range hoods have become one of the indispensable kitchen appliances in modern families. The range hood uses the principle of fluid dynamics to work, sucks and exhausts the range hood through a centrifugal fan installed inside the range hood, and uses a filter to filter some grease particles. The centrifugal fan includes a volute, an impeller installed in the volute and a motor that drives the impeller to rotate. When the impeller rotates, a negative pressure suction is generated in the center of the fan, and the oil fume under the range hood is sucked into the fan, and after being accelerated by the fan, it is collected by the volute and guided out of the room. [0003] Before the installation of household range hoods, the cabinets are generally designed and installed according to the dimensions of the range hoods, the installation s...

AI Technical Summary

Problems solved by technology

[0005] However, the above method will bring the following problems: 1) the cost will increase, and it may also cause problems such as increased noise; 2) it will hinder the user's cooking operation, and there is a safety hazard, and the user's head is easy to hit the barrier plate; 3) affect Appearance, will not be accepted by users

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