Intelligent range hood
A technology of intelligent range hood and range hood, which is applied in the direction of removing range hood, household heating, lighting and heating equipment, etc., can solve the problems of low current detection accuracy, complicated installation structure, affecting the user experience effect, etc., to improve real-time performance and accuracy, cost reduction
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[0059] Example one
[0060] An intelligent range hood 1, which includes: an impeller, a motor that drives the impeller to operate, and a check valve 11 arranged at the air outlet, and further includes: a check valve capacitor unit 12 and an information processing unit connected in sequence 13. The main control unit 14 and the motor drive unit 15;
[0061] The check valve capacitor unit 12 is used to generate different capacitances according to the opening and closing of the check valve;
[0062] The information processing unit 13 is used to collect the generated capacitance and convert the capacitance into a rectangular wave;
[0063] The main control unit 14 is used to collect the frequency of the rectangular wave and the current operating status of the range hood, and to judge the current opening and closing status of the check valve in real time according to the frequency and operating status of the rectangular wave, and produce differences according to different opening and closin...
Example Embodiment
[0099] Example two
[0100] In this embodiment, on the basis of the first embodiment, the method for the main control unit 14 to determine the blade opening and closing state is further refined.
[0101] Optionally, such as Figure 8 As shown, the main control unit is also used to: make multiple judgments on the on-off state of the check valve within a preset period of time to confirm the on-off state of the check valve;
[0102] Among them, when the range hood is in operation, the frequency of the rectangular wave is compared with the preset third frequency to determine whether the check valve is in a normal open state; the third frequency is equal to the first frequency and the preset floating threshold The sum; the floating threshold is a positive number;
[0103] When the range hood is not in operation, compare the frequency of the rectangular wave with the preset fourth frequency to determine whether the check valve is in a normally closed state; the fourth frequency is equal to ...
Example Embodiment
[0110] Example three
[0111] On the basis of the second embodiment, this embodiment provides a specific embodiment scheme for determining the angle of the blade and adjusting the operating state of the motor according to the opening and closing state of the blade.
[0112] Optionally, the main control unit 14 is also used for:
[0113] When the range hood is in operation and it is determined that the check valve is in an abnormally opened state, or when the range hood is in a non-operational state and it is determined that the non-return valve is in an abnormally closed state, according to the preset multiple frequency ranges Determine the frequency range of the current detected rectangular wave frequency;
[0114] Judge the angle range between the two blades of the check valve according to the determined frequency range;
[0115] Among them, different frequency ranges correspond to different angle ranges one to one;
[0116] In the embodiment of the present invention, such as Figure ...
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