A fan speed deviation control method for a range hood
A range hood and fan speed technology, applied in pump control, oil fume removal, machine/engine, etc., can solve problems such as being easily affected by ambient light, poor user experience, running smoke, etc., to achieve good range hood effect, excellent Working status, energy saving effect
Active Publication Date: 2021-10-29
NINGBO FOTILE KITCHEN WARE CO LTD
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Problems solved by technology
[0006] In the above-mentioned prior art, the automatic control method is to compare the difference between the oil fume image and the smoke-free background image through the pressure or the concentration of the oil fume, and then increase the speed for adsorption after the oil fume diffuses out, which is a hysteresis control method. , the user experience is poor; in addition, the control method of image recognition is easily affected by ambient light, and in the environment of oily smoke for a long time, it is easy to fail, and the accuracy is not high, which is prone to misjudgment
[0007] In addition, if the fan speed deviation is too large, the range hood may not be able to achieve the fume effect of the preset speed, which will seriously cause the phenomenon of "running smoke". In addition, the fan speed deviation may cause back pressure Too large or the phenomenon of oil accumulation in the impeller may cause the fan to be in a bad working state for a long time, wasting energy
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[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.
[0031] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element must have a particular orientation, be constructed, and operate in a particular orientatio...
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The invention discloses a range hood, which comprises a fan and a smoke exhaust pipe for connecting the air outlet of the fan with an external public flue. Valve, characterized in that: the range hood also includes a monitoring device, the monitoring device includes a smoke sensor for monitoring whether the exhaust pipe is leaking smoke, a distance measuring sensor for monitoring the opening and closing degree of the non-return valve, and a A voltage monitor that monitors the input voltage to the fan's motor. Also disclosed is a fan speed deviation control method for the range hood. Compared with the prior art, the present invention has the advantages of: by setting the smoke sensor, distance measuring sensor and voltage monitor, it can intelligently analyze the cause of the deviation of the fan speed, so that the fan speed can be within the preset range and achieve the expected good performance. Excellent oil absorption effect, and at the same time keep the fan in good working condition, saving energy.
Description
technical field [0001] The invention relates to a cooking fume purification device, in particular to a range hood and a method for controlling the speed deviation of the range hood. Background technique [0002] The range hood has become one of the indispensable kitchen appliances in modern families. It is installed above the kitchen stove, which can quickly suck away the waste burned by the stove and the harmful oil fume generated during the cooking process, and discharge it outside, reducing the Pollution, air purification, and anti-virus, anti-explosion safety guarantee function. [0003] 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 ge...
Claims
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IPC IPC(8): F24C15/20F04D27/00F04D29/70
CPCF04D27/001F04D27/004F04D29/703F24C15/2021
Inventor 何勇何立博
Owner NINGBO FOTILE KITCHEN WARE CO LTD