Range hood with movable smoke guide plate and control method thereof

Abstract

The invention discloses a range hood with a movable smoke guide plate and a control method thereof. An installation cavity is formed between a fan frame and a decoration outer cover, a smoke collection cover is installed below the decoration outer cover, a smoke guide plate is installed below an air inlet of the smoke collection cover, a volute positive pressure drainage pipe and a lifting mechanism are installed in the installation cavity, the air inlet end of the volute positive pressure drainage pipe communicates with the interior of a volute of the fan, the air outlet end of the volute positive pressure drainage pipe is connected with a driving mechanism, so that the airflow flowing out from the air outlet end forms a driving source of the driving mechanism, and the smoke guide plate can move relative to the smoke collection cover under the driving of the lifting mechanism. The range hood has the advantages that the airflow led out from the interior of the volute through the volutepositive pressure drainage pipe can be used as a driving source to drive the lifting mechanism, so that the smoke guide plate can move relative to the smoke collection cover, and the motion posture of the smoke guide plate is intelligently adjusted; the moving parts are few, the structure is simple, the cost is low, the disassembly and assembly are easy, the reutilization of airflow inside the volute is realized, and the negative pressure loss of the range hood is reduced.

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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