Range hood with movable smoke deflector and control method thereof

Abstract

A range hood with a movable smoke deflecting plate and its control method, an installation cavity is formed between the fan frame and a decorative outer cover, a smoke collecting hood is installed under the decorative outer cover, and a smoke guiding plate is installed under the air inlet of the smoke collecting hood , the volute positive pressure drainage tube and the lifting mechanism are installed in the installation cavity, the inlet end of the volute positive pressure drainage tube is connected with the inside of the volute of the fan, and the outlet end of the volute positive pressure drainage tube is connected with the driving mechanism. The airflow flowing out from the gas outlet constitutes the driving source of the driving mechanism, and the smoke guiding plate can move relative to the smoke collecting hood driven by the lifting mechanism. The advantage of the present invention is that: the positive pressure drainage pipe of the volute of the range hood draws out the air flow from the inside of the volute as a driving source to drive the lifting mechanism, so that the smoke guide plate can move relative to the smoke collection hood, and the movement posture of the smoke guide plate can be controlled. Intelligent adjustment not only has fewer moving parts, simple structure, low cost, and easy disassembly and assembly, but also realizes the reuse of the airflow inside the volute and reduces the negative pressure loss of the range hood.

Description

technical field [0001] The invention relates to a range hood, in particular to a range hood with a movable smoke guide plate and a control method thereof. Background technique [0002] Existing range hoods generally only have two or three air volume keys. When the motor speed is set, the motor will not adjust the air volume and pressure of the range hood according to the actual kitchen environment or cooking method, so that it can adapt to the current situation at any time. And in the most reasonable working condition. Moreover, the cooking fume and water vapor produced during the cooking process change at any time. The existing range hoods will not actively detect this change, and cannot adjust the motor speed at any time to change the air volume to adapt, but can only manually press the button to continuously Switching is not only not convenient enough to operate, but also not energy-saving and environmentally friendly. For example, the Chinese Invention Patent No. 20121...

AI Technical Summary

Problems solved by technology

[0002] Existing range hoods generally only have two or three air volume keys. When the motor speed is set, the motor will not adjust the air volume and pressure of the range hood according to the actual kitchen environment or cooking method, so that it can adapt to the current situation at any time. and in the most reasonable working condition

Moreover, the cooking fume and water vapor produced during the cooking process change at any time. The existing range hoods will not actively detect this change, and cannot adjust the motor speed at any time to change the air volume to adapt, but can only manually press the button to continuously Switching is not only not convenient enough to operate, but also not energy-saving and environmentally friendly.

For example, the Chinese Invention Patent No. 201210036643.2 (authorized announcement No. CN 102538046B) discloses the "range hood with self-adaptive adjustment of fan speed", the range hood can only adjust the fan speed according to the resistance of the air outlet To compensate the air volume, instead of adjusting the motor output according to the oil fume and water vapor concentration at the air outlet

[0003] Because the overall height of the range hood determines the large negative pressure loss of the range hood, in order to reduce the negative pressure loss, people have invented a range hood with a movable smoke deflector, such as the application number 201610029797.7 (the application publication number is CN105423395A) "European-style range hood with automatic smoke deflector" disclosed in the Chinese invention patent application, the range hood can adjust the distance between the smoke deflector and the pot according to the size of the fume, which better solves the problem of negative pressure loss, but , the smoke deflector of the range hood only moves up and down when the range hood is turned on and off. When the range hood is turned on, the smoke guide sinks and the air inlet of the range hood opens; when the range hood is closed, the guide The smoke plate rises, and the air inlet of the range hood is closed

It can be seen that the lifting movement of the smoke guide plate of the range hood does not consider the change of the working conditions of the range hood, that is, the lifting position of the smoke guide plate cannot be adjusted in real time according to the concentration of oil fume and water vapor. It can be seen that the adjustment function of the smoke guide plate is relatively simple

In addition, various range hoods with liftable smoke deflectors are disclosed in the prior art. The lift of the smoke deflectors is all through the driving mechanism plus connecting rods or gears or screw rods or screw rods, etc., not only the structure is relatively complicated , high cost, poor reliability, and high motion noise generated during work

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