CN213630585U

CN213630585U - Active noise reduction sounding module and range hood

Info

Publication number: CN213630585U
Application number: CN202022046365.1U
Authority: CN
Inventors: 刘志华; 朱丽平; 陈成; 李彬; 何志超
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-07-06
Anticipated expiration: 2030-09-17

Abstract

The utility model provides an initiative active noise reduction sound production module and lampblack absorber relates to lampblack absorber technical field, has solved the relatively poor technical problem of performance of making an uproar of falling of sound production module in the lampblack absorber that exists among the prior art. The sound production module is used for being installed in the range hood, and the sound production module includes sound generating mechanism, resonance box and inverted tube, and wherein, sound generating mechanism's speaker setting is in the resonance box, and the inverted tube sets up on the resonance box, can improve low frequency sound in order to be used for reducing the noise of lampblack absorber during operation after the sound stack that follow speaker and follow inverted tube sent. The utility model is used for reduce the well low frequency channel noise of hydraulic press, improve sound production module's life.

Description

Active noise reduction sounding module and range hood

Technical Field

The utility model belongs to the technical field of the lampblack absorber technique and specifically relates to a sound production module and lampblack absorber of making an uproar falls in initiative activity is related to.

Background

When the active noise reduction device is used for the operation of the range hood, the loudspeaker in the sound production module is often in the environment with high temperature, high humidity and more oil smoke, and the service life and the noise reduction performance are greatly attenuated; on the other hand, the noise components of the range hood are mainly concentrated in the middle and low frequency bands, so that the noise reduction effect of the prior art and the patent scheme is very limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an initiative active noise reduction sound production module and lampblack absorber has solved the relatively poor technical problem of performance of making an uproar in the sound production module in the lampblack absorber that exists among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of active noise reduction sound production module of taking the initiative, sound production module is used for installing in the lampblack absorber, sound production module includes sound generating mechanism, resonance box and paraphase pipe, wherein, sound generating mechanism's speaker sets up in the resonance box, the paraphase pipe sets up on the resonance box, follow the speaker and follow can improve low frequency sound so that be used for reducing behind the sound stack that the paraphase pipe sent the noise of lampblack absorber during operation.

Further, the lampblack absorber comprises an oil smoke fan, the sound outlet end of the loudspeaker sucks one side of the oil smoke fan towards oil smoke, and the sound outlet end of the phase inversion pipe and the sound outlet end of the loudspeaker are arranged on the same side face or not arranged on the same side face.

Further, the range hood comprises a rectangular outer pipe, and the resonance box is fixed on the inner side wall of the rectangular outer pipe; the number of the resonance boxes is one, or the number of the resonance boxes is two or more, and each resonance box is connected with the loudspeaker and the phase inversion tube.

Further, the distance between the center position of the loudspeaker and the bottom of the oil smoke fan is not less than 5 cm.

Further, the bottom plate of resonance box is the arc, resonance box bottom is close to the height that one side was in the middle of the lampblack absorber is greater than resonance box bottom is kept away from the height of one side in the middle of the lampblack absorber.

Further, the resonance box includes end casing and upper cover body, the upper cover body sets up end casing open-ended one side and both are connected, end casing is kept away from one side of upper cover body is fixed on the rectangle outer tube of lampblack absorber, end casing with be formed with the resonant cavity between the upper cover body, the speaker sets up in the resonant cavity and fix on the upper cover body, be equipped with on the upper cover body the phase reversal pipe.

Furthermore, a loudspeaker assembling hole and an inverter tube assembling hole are formed in the upper cover body, a wiring hole is formed in the bottom shell, and a connecting wire connected with the loudspeaker is connected with a controller of the sound generating device through the wiring hole.

Furthermore, a protective mesh enclosure is arranged on one side of the resonance box, which faces the oil smoke suction fan.

Further, the protective mesh cover still includes carriage and the blade of falling oil, the blade level of falling oil sets up and follows the direction of height and distribute in proper order on the carriage, the bottom of the blade of falling oil with the carriage is connected, the top is to keeping away from the lopsidedness of resonance box, the blade of falling oil with be formed with the sound outlet between the carriage.

A range hood comprises the active noise reduction and sound production module.

The utility model provides an active noise sound production module of making an uproar that falls of initiative is provided with speaker and paraphase pipe on the resonance box, and the sound wave from the paraphase pipe paraphase hole radiation can be the homophase stack with the sound wave of speaker radiation to strengthen the radiation of low frequency sound, makeed the sound of low frequency channel obtain the enhancement, sound wave and noise sound wave opposite phase after the stack, in order to realize reducing the well low frequency noise phase place in the range hood

The utility model discloses preferred technical scheme can also produce following technological effect at least:

due to the design of the arc-shaped structure at the bottom of the resonator, on one hand, the wind resistance can be effectively reduced, and meanwhile, the oil guide effect is achieved;

one side of the resonance box towards the oil smoke suction fan is provided with a protective mesh enclosure, the protective mesh enclosure effectively protects the loudspeaker, oil accumulation is prevented, fumigation of the loudspeaker by the oil smoke can be reduced, and the service life of the loudspeaker is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an internal structure of a range hood provided by an embodiment of the present invention;

fig. 2 is an exploded schematic view of an active noise reduction and sound generation module provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a bottom shell of a resonator provided by an embodiment of the present invention;

fig. 4 is a schematic front view of a bottom shell of a resonator provided in an embodiment of the present invention;

fig. 5 is a schematic top view of a bottom shell of a resonator box provided in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an upper cover body of a resonance box according to an embodiment of the present invention;

fig. 7 is a schematic front view of an upper cover body of a resonance box according to an embodiment of the present invention;

fig. 8 is a schematic top view of an upper cover body of a resonance box according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a protective mesh enclosure according to an embodiment of the present invention;

fig. 10 is a schematic front view of a protective mesh enclosure according to an embodiment of the present invention;

fig. 11 is a schematic top view of a protective mesh enclosure according to an embodiment of the present invention.

In the figure, 1-a range hood; 11-a lampblack fan; 12-a rectangular outer tube; 2-a resonance box; 21-bottom shell; 211-a base plate; 212-a wiring hole; 22-upper cover body; 221-speaker mounting holes; 222-inverter tube assembly holes; 223-speaker fixing holes; 224-a protective mesh enclosure fixing hole; 3-a loudspeaker; 4-a controller; 5-protective net cover; 51-oil pouring leaves; 52-positioning columns; 6-inverter tube; 7-oil guide plate; 8-oil guiding net; 9-oil receiving groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-11, the utility model provides an active noise reduction sound production module, sound production module are used for installing in lampblack absorber 1, and sound production module includes sound generating mechanism, resonance box 2 and inverted tube 6, and wherein, sound generating mechanism's speaker 3 sets up in resonance box 2, and inverted tube 6 sets up on resonance box 2, can improve low frequency sound so that be used for reducing the noise of hydraulic press 1 during operation after the sound stack that follow speaker 3 and send from inverted tube 6. The principle of noise reduction by adopting the sounding module is as follows: the noise reduction module can generate and play noise with the same amplitude and opposite phase with the noise generated by the range hood, and can effectively reduce the medium and low frequency noise in the range hood. The utility model provides a sound production module is provided with speaker 3 and inverted phase pipe 6 on resonance box 2, and the sound wave of radiating from 6 inverted phase holes of inverted phase pipe can be the homophase stack with the sound wave of speaker 3 radiation to strengthened the radiation of low frequency sound, made the sound of low frequency channel obtain strengthening, the sound wave phase place of the produced noise of sound wave after the stack and lampblack absorber is opposite, in order to realize reducing the well low frequency noise in the range hood.

The opposite phase sound wave radiated behind the loudspeaker 3 (behind the cone) is reflected by the resonance box 2 and then is radiated outside the resonance box 2 through the phase inversion tube 6, wherein the phase of the low-frequency part sound wave can be close to the phase of the same-frequency sound wave radiated by the loudspeaker 3 (in front of the cone), so that the two same-phase sound waves are superposed and enhanced, thereby expanding the low-frequency response, and the medium-high frequency sound wave is easily absorbed by the resonance box 2 due to the short wave length.

As the embodiment of the utility model provides an optional implementation mode, lampblack absorber 1 includes oil smoke fan 11, and speaker 3's sound-emitting end inhales one side of oil smoke fan 11 towards the oil smoke, and the sound-emitting end of paraphase pipe 6 and speaker 3's sound-emitting end are on same side or not on same side. Referring to fig. 2, it can be illustrated that the loudspeaker 3 and the inverter tube 6 are located on the same side of the resonance box 2, so that the sound waves radiated from the inverter hole of the inverter tube 6 can be superimposed in phase with the sound waves radiated from the loudspeaker 3. The inverter tube 6 may also be designed on the other side of the resonance box 2 (i.e. not on the same side as the loudspeaker 3). The shape of the inverter tube 6 is not limited to a circular tube shape, and may be a square shape or other structural shape.

As an optional implementation manner of the embodiment of the present invention, referring to fig. 1, the range hood 1 includes a rectangular outer tube 12, and the resonance box 2 is fixed on an inner side wall of the rectangular outer tube 12; the number of the resonance boxes 2 is one, or the number of the resonance boxes 2 is two or more, and each resonance box 2 is connected with a loudspeaker 3 and an inverter tube 6. Referring to fig. 1, it is illustrated that two resonance boxes 2 are symmetrically arranged on a rectangular outer tube 12 to facilitate reducing noise generated by the range hood, and a speaker 3 and a sound outlet end of an inverter tube 6 on each resonance box 2 face to one side of a lampblack suction fan 11.

As the embodiment of the utility model provides an optional implementation mode, the distance between speaker 3's central point and the 11 bottoms of oil smoke fan is not less than 5cm to be favorable to reducing the noise that produces among the range hood.

As the embodiment of the utility model provides an optional embodiment, the bottom plate 211 of resonance box 2 is the arc, and 2 bottoms of resonance box are close to the height that lampblack absorber 1 middle one side was kept away from to 2 bottoms of resonance box highly be greater than the height of one side in the middle of lampblack absorber 1. Referring to fig. 1, the position of the bottom plate 211 of the resonance box 2 in the range hood 1 is illustrated; referring to fig. 2, the shape of the bottom plate 211 of the resonant tank 2 is illustrated, and the bottom of the box body 31 at the bottom of the resonant cavity is designed to be arc-shaped, so that on one hand, the wind resistance can be effectively reduced, and meanwhile, the oil guiding effect is achieved.

As the embodiment of the present invention can be optionally implemented, the resonance box 2 includes a bottom casing 21 and an upper cover 22, the upper cover 22 is disposed on one side of the opening of the bottom casing 21 and connected to the bottom casing, one side of the bottom casing 21 away from the upper cover 22 is fixed on the rectangular outer tube 12 of the range hood 1, a resonance cavity is formed between the bottom casing 21 and the upper cover 22, the speaker 3 is disposed in the resonance cavity and fixed on the upper cover 22, and the upper cover 22 is equipped with the phase reversal tube 6. Referring to fig. 2, a bottom casing 21 and an upper cover 22 are illustrated, assembling holes are provided along the circumferential direction of the bottom casing 21 and the upper cover 22, the upper cover 22 is inserted into one side of the opening of the bottom casing 21, and screws pass through the corresponding assembling holes to fixedly connect the bottom casing 21 and the upper cover 22. The upper cover 22 is provided with a speaker 3 and an inverter tube 6, and the sound output ends of the speaker 3 and the inverter tube 6 face the side of the lampblack suction fan 11. In addition, the volume of the resonant cavity should be not less than 1.4L for ensuring the resonance effect.

As an optional implementation manner of the embodiment of the present invention, the upper cover 22 is provided with a speaker assembling hole 221 and an inverter assembling hole 222, the bottom shell 21 is provided with a wire hole 212, and a wire connected to the speaker 3 is connected to the controller 4 of the sound generating apparatus through the wire hole 212. The controller 4 is used for controlling the loudspeaker 3, so that the loudspeaker 3 can emit corresponding noise reduction sound waves, the sound waves radiated from the phase inversion holes of the phase inversion pipes 6 can be superposed with the sound waves radiated by the loudspeaker 3 in the same phase, the radiation of low-frequency sound is enhanced, and the phases of the superposed sound waves are opposite to the phases of the noise sound waves, so that the noise reduction function of the range hood is realized. Referring to fig. 3, a wiring hole 212 is illustrated, the wiring hole 212 being located at the bottom of the bottom case 21, and a wiring connected to the speaker 3 passing through the wiring hole 212.

Referring to fig. 2, 6 and 8, which illustrate the upper cover 22, the upper cover 22 is provided with speaker mounting holes 221 and inverter tube mounting holes 222. referring to fig. 2, the speaker 3 can be inserted into the speaker mounting holes 221, and screws are inserted into the speaker 3 and screwed into the speaker fixing holes 223 to fix the speaker 3 to the upper cover 22. Referring to FIG. 6, inverter tube 6 is shown with inverter tube 6 mounted in inverter tube mounting hole 222.

As the embodiment of the utility model provides an optional embodiment, 2 resonance box are provided with protection screen panel 5 towards one side that oil smoke suction oil cigarette fan 11, and protection screen panel 5 effectively protects speaker 3, prevents long-pending oil, can reduce the stifling of oil smoke to speaker 3 simultaneously, improves speaker 3's life. Referring to fig. 9, the positioning column 52 is disposed on the protective mesh enclosure 5, the upper cover 22 is disposed with a protective mesh enclosure fixing hole 224, and the positioning column 52 is inserted into the corresponding protective mesh enclosure fixing hole 224 to fixedly connect the protective mesh enclosure 5 and the upper cover 22.

As the embodiment of the utility model provides an optional implementation mode, protection screen panel 5 specifically connects can be as follows: the protective mesh enclosure 5 can be the shutter type structure, and the protective mesh enclosure 5 still includes carriage and the blade 51 of falling oil, falls the blade 51 level setting and follow the direction of height and distribute in proper order on the carriage, fall the bottom of blade 51 of oil and be connected with the carriage, the top to keeping away from the lopsidedness of resonance box 2, is formed with the sound outlet between blade 51 of falling oil and the carriage. The angle of inclination of the oil pouring blade 51 can be reasonably selected according to actual conditions, and for example, the angle of inclination of the oil pouring blade 51 can be 45 °. Under the drive of oil smoke fan 11, the oil smoke is inhaled in oil smoke fan 11, and resonance box 2 sets up in the below of oil smoke fan 11, through the design of shutter formula protection screen panel and the setting of the incline direction of oil pouring blade 51, effectively protects speaker 3, prevents long-pending oil, can reduce the stifling of oil smoke to speaker 3 simultaneously, improves speaker 3's life.

A range hood comprises an active noise reduction and sound production module. Referring to fig. 1, the range hood 1 includes a rectangular outer tube 12, a resonance box 2 of the sound generating module is fixed on the inner side wall of the rectangular outer tube 12, sound emitting ends of the speaker 3 and the inverter tube 6 face one side of the lampblack suction fan 11, sound waves radiated from the inverter hole of the inverter tube 6 can be in-phase superposed with sound waves radiated from the speaker 3, so that radiation of low-frequency sound is enhanced, and the superposed sound waves are opposite in phase to sound waves of noise generated by the range hood, so that low-frequency and medium-frequency noise in the range hood is reduced.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An active noise reduction sound production module is characterized in that the sound production module is arranged in a range hood (1) and comprises a sound production device, a resonance box (2) and an inverter tube (6),

the utility model discloses a lampblack absorber, including sound generating mechanism, resonance box (2), paraphase pipe (6), loudspeaker (3) and follow can improve low frequency sound and be used for reducing behind the sound stack that paraphase pipe (6) sent on resonance box (2) the noise of sound generating mechanism's speaker (3) setting in resonance box (2) can improve low frequency sound in order to be used for reducing after the sound stack lampblack absorber (1) during operation.

2. Active noise reduction and sound production module according to claim 1, characterized in that the range hood (1) comprises a fume fan (11), the sound outlet end of the speaker (3) is sucked into one side of the fume fan (11) towards the fume, and the sound outlet end of the phase inversion tube (6) is on the same side or not on the same side as the sound outlet end of the speaker (3).

3. The active noise reduction and sound production module according to claim 2, wherein the range hood (1) comprises a rectangular outer tube (12), and the resonance box (2) is fixed on the inner side wall of the rectangular outer tube (12);

the number of the resonance boxes (2) is one, or the number of the resonance boxes (2) is two or more, and each resonance box (2) is connected with the loudspeaker (3) and the phase inversion tube (6).

4. The active noise reduction and sound production module according to claim 2, wherein the distance between the center position of the speaker (3) and the bottom of the lampblack blower (11) is not less than 5 cm.

5. The active noise reduction and sound production module according to any one of claims 1 to 4, wherein the bottom plate (211) of the resonance box (2) is an arc-shaped plate, and the height of the bottom of the resonance box (2) close to the middle side of the range hood (1) is larger than the height of the bottom of the resonance box (2) far away from the middle side of the range hood (1).

6. The active noise reduction and sound production module according to any one of claims 1 to 4, wherein the resonance box (2) comprises a bottom shell (21) and an upper cover (22), the upper cover (22) is disposed on one side of the opening of the bottom shell (21) and connected to the bottom shell, one side of the bottom shell (21) away from the upper cover (22) is fixed on the rectangular outer tube (12) of the range hood (1), a resonance cavity is formed between the bottom shell (21) and the upper cover (22), the speaker (3) is disposed in the resonance cavity and fixed on the upper cover (22), and the phase inversion tube (6) is assembled on the upper cover (22).

7. The active noise reduction and sound production module according to claim 6, wherein the upper cover (22) is provided with a speaker assembly hole (221) and an inverter tube assembly hole (222), the bottom case (21) is provided with a wire hole (212), and a connection wire connected with the speaker (3) is connected with a controller (4) of the sound production device through the wire hole (212).

8. Active noise reduction and sound production module according to any of claims 2-4, characterized in that the side of the resonance box (2) facing the lampblack suction fan (11) is provided with a protective mesh (5).

9. The active noise reduction and sound production module according to claim 8, wherein the guard net (5) further comprises a supporting frame and oil pouring blades (51), the oil pouring blades (51) are horizontally arranged and sequentially distributed on the supporting frame along the height direction, the bottom ends of the oil pouring blades (51) are connected with the supporting frame, the top ends of the oil pouring blades are inclined towards one side far away from the resonance box (2), and sound outlets are formed between the oil pouring blades (51) and the supporting frame.

10. A range hood, characterized by comprising an active noise reduction and sound production module according to any one of claims 1 to 9.