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.

Pending Publication Date: 2021-12-03
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the active noise reduction device in the prior art is easily polluted by oil and reduce the noise reduction effect, thereby providing a method that can reduce the degree of oil pollution of the active noise reduction device, thereby ensuring Protective device and range hood for noise reduction effect

Method used

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  • Protection device, extractor hood and control method of extractor hood
  • Protection device, extractor hood and control method of extractor hood
  • Protection device, extractor hood and control method of extractor hood

Examples

Experimental program
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Effect test

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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PUM

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Abstract

The invention relates to the technical field of household appliances, in particular to a protection device, an extractor hood and a control method of the extractor hood. The protection device comprises a connecting pipe, a first protection part and a second protection part, wherein the connecting pipe is suitable for being mounted in a shell of the extractor hood, and the connecting pipe is provided with a first end and a second end; the first protection part is arranged at the second end, and the first protection part is suitable for sound to penetrate through and not suitable for oil dirt to penetrate through; and the second protection part is arranged at the first end, an active noise reduction device is suitable for being mounted in the second protection part, and the second protection part communicates with the interior of the connecting pipe. The sound generated in the working process of the extractor hood can penetrate through the first protection part, enter the connecting pipe and enter the active noise reduction device, and the active noise reduction device works to reduce noise. The oil dirt generated by working of the extractor hood cannot penetrate through the first protection part and can not pollute the active noise reduction device, so that the active noise reduction device can be protected so as to reduce the degree that the active noise reduction device is polluted by the oil dirt, and therefore the noise reduction effect of the active noise reduction device is guaranteed.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a protective device, a range hood and a control method for the range hood. Background technique [0002] The range hood is a kitchen appliance that purifies the kitchen environment. The range hood can discharge the oil fumes in the kitchen environment in time through the operation of the range hood, and keep the air in the kitchen environment and even the entire indoor environment clean. When the range hood is working, the motor drives the impeller to rotate, and the impeller cuts the air during the rotation, causing the air to collide and generate a lot of noise, which affects the user experience. The noise problem has become an important factor for users to consider when purchasing a range hood. After all, when the user is using the range hood, the distance between the human ear and the range hood is less than 50cm, and the noise has a great impact on the human ear...

Claims

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Application Information

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IPC IPC(8): F24C15/20
CPCF24C15/20F24C15/2021
Inventor 庞宗莉许宁王宏黄斌李刚温汉杰
Owner GREE ELECTRIC APPLIANCES INC
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