A range hood with a noise reduction device

Abstract

The utility model relates to kitchen appliance technical field, concretely is a kind of exhaust hood with noise reduction device, including body, the bottom of body is equipped with suction port, the bottom of suction port is equipped with oil screen, and the bottom of oil screen is equipped with oil cup, the side of body is fixedly connected with main control switch, the top of body is fixedly installed with wind box;Beneficial effects are: through buffer spring, telescopic link, mounting bracket, sound-absorbing cotton and perforated sound-absorbing board structure design, mounting bracket and the volute fixedly connected with motor, when motor-driven wind wheel rotates, sound-absorbing cotton and perforated sound-absorbing board can effectively absorb the vibration of motor and the noise generated by wind flow circulation, play the effect of noise reduction, simultaneously cooperate with the air guide ring fixedly connected with the air inlet of wind wheel, sound-absorbing cotton and perforated baffle, noise can also be absorbed by wind flow, further enhance the noise reduction effect of range hood, by active noise reduction equipment, active generation and noise reverse's sound-absorbing wave, significantly reduce noise.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically to a range hood equipped with a noise reduction device. Background Technology

[0002] As people's living standards continue to improve, the comfort of the kitchen environment is receiving increasing attention. As an indispensable appliance in the kitchen, the main function of a range hood is to remove cooking fumes promptly during cooking and maintain fresh air in the kitchen. However, in actual use, the noise generated by range hoods during operation causes significant annoyance to users. This noise not only interferes with communication in the kitchen but may also cause some damage to users' hearing. Utility Model Content

[0003] The purpose of this invention is to provide a range hood with a noise reduction device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a range hood with a noise reduction device, comprising a body, a smoke inlet at the bottom of the body, an oil filter at the bottom of the smoke inlet, an oil cup at the bottom of the oil filter, a main control switch fixedly connected to the side of the body, and a fan box fixedly installed on the top of the body.

[0005] Preferably, a volute is fixedly installed on the top inner side of the bellows, sound-absorbing plates are installed on both the inner side and the top side of the bellows, and an active noise reduction device is fixedly installed on the side of the bellows.

[0006] Preferably, a telescopic rod is fixedly installed on the inner bottom of the bellows, a buffer spring is sleeved on the side of the telescopic rod, a mounting bracket is fixedly connected to the top of the telescopic rod, sound-absorbing cotton is fixedly installed on the top of the mounting bracket, a perforated sound-absorbing plate is provided on the top of the sound-absorbing cotton, and the top of the perforated sound-absorbing plate is fixedly connected to the volute.

[0007] Preferably, the active noise cancellation device includes a control motherboard, a microphone collector is fixedly connected to the side of the control motherboard, a speaker is fixedly mounted on the side of the control motherboard, and the control motherboard is electrically connected to the microphone collector and the speaker.

[0008] Preferably, a motor is built into the front of the volute, a fan is synchronously installed on the side of the motor, an air guide ring is fixedly connected to the side of the volute, and sound-absorbing cotton is fixedly connected to the side of the air guide ring. A perforated partition is fixedly installed on the side of the sound-absorbing cotton, and the perforated partition is bolted to the side of the volute.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the structural design of buffer spring, telescopic rod, mounting bracket, sound-absorbing cotton and perforated sound-absorbing plate, the mounting bracket is fixedly connected to the volute housing where the motor is located. When the motor drives the impeller to rotate, the sound-absorbing cotton and perforated sound-absorbing plate can effectively absorb the noise generated by the motor vibration and airflow, thus achieving a noise reduction effect. At the same time, in conjunction with the air guide ring, sound-absorbing cotton and perforated partition fixedly connected to the air inlet of the impeller, the noise brought by the airflow can also be absorbed, further enhancing the noise reduction effect of the range hood. Through the active noise reduction device, a sound-absorbing wave opposite to the noise is actively generated, significantly reducing noise. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the internal structure of the bellows of this utility model;

[0012] Figure 3 This is a schematic diagram showing the unfolded structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the overall structure of the volute of this utility model.

[0014] In the diagram: 1. Main body; 2. Suction port; 3. Oil filter; 4. Oil cup; 5. Main control switch; 6. Air box;

[0015] 7. Volute; 8. Silencing plate; 9. Telescopic rod; 10. Buffer spring; 11. Mounting bracket; 12. Sound-absorbing cotton; 13. Perforated sound-absorbing plate; 14. Control main board; 15. Microphone collector; 16. Speaker; 17. Motor; 18. Fan wheel; 19. Air guide ring; 20. Perforated partition. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a range hood with a noise reduction device, including a body 1, a smoke inlet 2 at the bottom of the body 1, an oil filter 3 at the bottom of the smoke inlet 2, and an oil cup 4 at the bottom of the oil filter 3, a main control switch 5 fixedly connected to the side of the body 1, and a fan box 6 fixedly installed on the top of the body 1.

[0018] A volute 7 is fixedly installed on the top inner side of the bellows 6. Silencing plates 8 are installed on both the inner side and the top side of the bellows 6. An active noise cancellation device is fixedly installed on the side of the bellows 6. The active noise cancellation device includes a control motherboard 14. A microphone collector 15 is fixedly connected to the side of the control motherboard 14. A speaker 16 is fixedly installed on the side of the control motherboard 14. The control motherboard 14 is electrically connected to the microphone collector 15 and the speaker 16. The microphone collector 15 collects the original noise sound waves generated by the operation of the volute 7 inside the bellows 6, and then performs algorithm processing on the control motherboard 14 to emit an anti-phase noise cancellation wave from the speaker 16, achieving the effect of active noise cancellation.

[0019] A telescopic rod 9 is fixedly installed on the bottom inner side of the bellows 6. A buffer spring 10 is sleeved on the side of the telescopic rod 9. A mounting bracket 11 is fixedly connected to the top of the telescopic rod 9. A sound-absorbing cotton 12 is fixedly installed on the top of the mounting bracket 11. A perforated sound-absorbing plate 13 is provided on the top of the sound-absorbing cotton 12. The top of the perforated sound-absorbing plate 13 is fixedly connected to the volute 7. The sound-absorbing cotton 12 and the perforated sound-absorbing plate 13 can effectively absorb the vibration of the motor 17 and the noise generated by the airflow, thus achieving a noise reduction effect.

[0020] The front of the volute 7 houses a motor 17, and a fan 18 is synchronously installed on the side of the motor 17. A guide ring 19 is fixedly connected to the side of the volute 7, and sound-absorbing cotton 12 is fixedly connected to the side of the guide ring 19. A perforated partition 20 is fixedly installed on the side of the sound-absorbing cotton 12 and bolted to the side of the volute 7. The guide ring 19, sound-absorbing cotton 12, and perforated partition 20 together guide the air at the air inlet into the volute 7, thereby increasing the air volume and reducing noise. Together with the sound-absorbing cotton 12 and perforated partition 20, they further enhance the noise reduction effect of the range hood.

[0021] In use, firstly, the motor 17 and impeller 18 are started via the main control switch 5. The impeller 18 rotates, generating negative pressure, and begins to draw smoke from the smoke inlet 2. During the operation of the motor 17, the mounting bracket 11 is fixedly connected to the volute 7 where the motor 17 is located. When the motor 17 drives the impeller 18 to rotate, the sound-absorbing cotton 12 and perforated sound-absorbing plate 13 on the top of the mounting bracket 11 can effectively absorb the vibration of the motor 17, achieving a noise reduction effect. At the same time, in conjunction with the design of the air guide ring 19 fixedly connected to the air inlet of the impeller 18, the air guide ring 19 can guide the air box 6. The air at the bottom air inlet flows into the volute 7 to increase airflow and reduce noise. In conjunction with the sound-absorbing cotton 12 and perforated baffle 20 on the side of the air guide ring 19, the airflow noise inside the volute is further absorbed. Finally, when the rotation speed of the motor 17 and the impeller 18 is large, the active noise reduction device can be activated. The microphone collector 15 collects the original noise sound waves generated by the operation of the volute 7 in the air box 6, and then performs algorithm processing on the control motherboard 14 to emit an anti-phase noise reduction wave from the speaker 16 to achieve the effect of active noise reduction.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A range hood having a noise reduction device, characterized by: The device includes a body (1), a smoke inlet (2) at the bottom of the body (1), an oil filter (3) at the bottom of the smoke inlet (2), an oil cup (4) at the bottom of the oil filter (3), a main control switch (5) fixedly connected to the side of the body (1), and a bellows (6) fixedly installed on the top of the body (1).

2. The range hood with noise reduction device according to claim 1, characterized in that: A volute (7) is fixedly installed on the top inner side of the bellows (6), and a sound-absorbing plate (8) is installed on both the inner side and the top side of the bellows (6). An active noise reduction device is fixedly installed on the side of the bellows (6).

3. The range hood with noise reduction device according to claim 1, characterized in that: A telescopic rod (9) is fixedly installed on the inner bottom of the bellows (6). A buffer spring (10) is sleeved on the side of the telescopic rod (9). A mounting bracket (11) is fixedly connected to the top of the telescopic rod (9). A sound-absorbing cotton (12) is fixedly installed on the top of the mounting bracket (11). A perforated sound-absorbing plate (13) is provided on the top of the sound-absorbing cotton (12), and the top of the perforated sound-absorbing plate (13) is fixedly connected to the volute (7).

4. The range hood with noise reduction device according to claim 2, characterized in that: The active noise cancellation device includes a control motherboard (14), a microphone collector (15) is fixedly connected to the side of the control motherboard (14), a speaker (16) is fixedly installed on the side of the control motherboard (14), and the control motherboard (14) is electrically connected to the microphone collector (15) and the speaker (16).

5. The range hood with noise reduction device according to claim 2, characterized in that: The front of the volute (7) has a motor (17) built in, and the side of the motor (17) is synchronously equipped with a fan wheel (18). The side of the volute (7) is fixedly connected to a wind guide ring (19), and the side of the wind guide ring (19) is fixedly connected to a sound-absorbing cotton (12). The side of the sound-absorbing cotton (12) is fixedly installed with a perforated partition (20), and the perforated partition (20) is bolted to the side of the volute (7).

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