Range hood

Abstract

The invention discloses a range hood comprising a fume collecting hood, a fan rack arranged on the upper side of the fume collecting hood and a fan system arranged in the fan rack. The fan system comprises a volute. The fume collecting hood comprises a left side wall and a right side wall. The range hood further comprises a fume escaping preventing device arranged in the fume collecting hood and the fan rack. The fume escaping preventing device comprises a first guide pipe, a first blown roll component, a second guide pipe and a second blown roll component, wherein one end of the first guide pipe communicates with fluid in the volute, the other end of the first guide pipe extends to the left side wall, one end of the second guide pipe communicates with the fluid in the volute, the other end of the second guide pipe extends to the right side wall, the left side wall is provided with an opening at the position corresponding to the end of the first guide pipe, the right side wall is provided with an opening at the position corresponding to the end of the second guide pipe, the first blown roll component is arranged in the end, close to the left side wall, of the first guide pipe, thesecond blown roll component is arranged in the end, close to the right side wall, of the second guide pipe, the first blown roll component and the second blown roll component both have the rolled state and the unrolled state that the first blown roll component and the second blown roll component are spread to the outside of the fume collecting hood under the action of the pressure in the corresponding guide pipes.

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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