Protection device, extractor hood and control method of extractor hood
A technology for a protective device and a range hood, which is applied in the removal of oil fume, heating methods, and household heating, can solve problems such as pollution and reduce noise reduction effects, and achieve the effect of ensuring noise reduction effects and reducing the degree of oil pollution.
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Embodiment 1
[0032] There is a relatively active noise reduction technology in the prior art, which mainly collects the sine wave of the noise through the microphone, and after the data processor analyzes it, the speaker emits an opposite sound wave to counteract the noise and weaken the energy of the noise. to achieve the noise reduction effect. This active noise reduction technology can greatly reduce noise. The most important components of active noise reduction technology are data processors, microphones and speakers. As an important collection device, the microphone is installed in the inner cavity of the range hood, so it is extremely easy to be polluted by oil, especially the small hole in the head of the microphone is easily blocked by oil, which directly affects the sound reception effect, thereby affecting data processing, and further affecting The opposite sound wave is emitted, which ultimately affects the noise reduction effect.
[0033] For this reason, this embodiment prov...
Embodiment 2
[0048] This embodiment provides a range hood.
[0049] In one embodiment, as figure 2 As shown, it includes a housing 6 , a volute assembly 7 disposed in the housing 6 , the protection device provided in Embodiment 1 and the active noise reduction device 4 disposed in the second protection member 3 . The volute assembly 7 specifically includes a volute and an impeller arranged in the volute. In this embodiment, when the range hood is in operation, the noise generated by the rotation of the impeller enters the connecting pipe 1 through the first guard 2, and finally enters the active The noise reduction device 4, the active noise reduction device 4 collects the sine wave of the noise through the microphone, and after the data processor analyzes it, the speaker emits an opposite sound wave waveform to counteract the noise sound wave, weaken the energy of the noise, and realize noise reduction Effect. The oil stains generated by the range hood cannot pass through the first pro...
Embodiment 3
[0052] This embodiment provides a method for controlling a range hood. The range hood includes a housing 6, a volute assembly 7 disposed in the housing 6, the protection device provided in Embodiment 1, and the second protection member 3 The active noise reduction device 4, the outer side of the connecting pipe 1 is provided with a heating structure, such as image 3 As shown, the control method includes the following steps:
[0053] S1: Obtain the cumulative working time of the range hood;
[0054] S2: When the cumulative working time of the range hood is greater than or equal to the first preset time, and the range hood is not working, make the heating structure heat the connecting pipe 1 for the second preset time, and set the cumulative working time of the range hood cleared.
[0055] In this embodiment, when the cumulative working time of the range hood is greater than or equal to the first preset time length, a certain amount of oil will accumulate inside the connectin...
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Abstract
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