CN209168729U - A kind of active noise reducing device and dish-washing machine - Google Patents
A kind of active noise reducing device and dish-washing machine Download PDFInfo
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- CN209168729U CN209168729U CN201821673616.5U CN201821673616U CN209168729U CN 209168729 U CN209168729 U CN 209168729U CN 201821673616 U CN201821673616 U CN 201821673616U CN 209168729 U CN209168729 U CN 209168729U
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Abstract
The utility model provides a kind of active noise reducing device.Active noise reducing device includes Noise Acquisition module, noise signal processing module and sound source generators；Noise Acquisition module is used for acquisition noise signal, and by noise signal transmission to noise signal processing module；Noise signal processing module is used for when receiving noise signal, generates noise reduction instruction, and noise reduction instruction is transmitted to sound source generators；Sound source generators are used to instruct in response to noise reduction and issue noise reduction sound wave, wherein the phase of noise reduction sound wave and the opposite in phase of noise signal.Since the noise reduction instruction generated of noise signal processing module can drive sound source generators to issue the opposite in phase noise reduction sound wave with noise signal, therefore noise source can be effectively eliminated from the root, and the excessive space layout of dish-washing machine will not be occupied, effectively reduce cost, the safety coefficient of product is improved, and then improves the user experience effect of dish-washing machine.
Description
Technical field
The utility model relates to active noise reduction fields, in particular to a kind of active noise reducing device and dish-washing machine.
Background technique
Dish-washing machine can generate stronger noise in the operating condition, be in current kitchen environment main noise pollution source it
One, the user experience effect of dish-washing machine is greatly reduced, since the dishwasher into operation time is longer, for a long time by the body to user
Body causes centainly to injure.The core technology of dishwasher product is realized based on principles such as water flow, mechanical reciprocations, therefore
Noise source can not be inherently eliminated.
It is mainly at present based on passive noise reduction to the Research of Noise Reduction direction of dish-washing machine inside industry, practice weekly notes are logical
Structure optimization is crossed, the mode of the materials such as sound insulation, sound-absorbing, damping is increased, although such passive noise reduction schemes can also reduce noise,
Its noise reduction effect is not obvious, and the available capacity that can be occupied a large amount of space layout, reduce product, and product figure is caused to add
Greatly, so as to cause the rising of product overall cost.Simultaneously as most of sound insulation, sound-absorbing material all have certain combustibility,
Therefore passive noise reduction schemes also will be greatly reduced the safety coefficient of product simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of active noise reducing devices, to realize the purpose of noise reduction.
The utility model is realized in this way:
In a first aspect, the active noise reducing device includes Noise Acquisition the utility model proposes a kind of active noise reducing device
Module, noise signal processing module and sound source generators, the noise signal processing module and the Noise Acquisition module and
The sound source generators are electrically connected；
The Noise Acquisition module is used for acquisition noise signal, and the noise signal transmission to noise signal is handled mould
Block；
The noise signal processing module is used for when receiving the noise signal, generates noise reduction instruction, and will be described
Noise reduction instruction is transmitted to the sound source generators；
The sound source generators issue noise reduction sound wave for responding the noise reduction instruction, wherein the noise reduction sound wave
The opposite in phase of phase and the noise signal.
Further, the noise signal processing module includes processing chip, and the processing chip is for obtaining described make an uproar
The noise spectrum of acoustical signal, and noise control acoustic field signal is generated according to the noise spectrum, and by the noise control sound field
Signal is scaled the noise reduction instruction.
Further, the noise signal processing module further includes signal amplification circuit, the processing chip and the letter
The electrical connection of number amplifying circuit, the signal amplification circuit are used to amplify noise reduction instruction.
Further, the Noise Acquisition module includes multiple Noise Acquisition devices, and each Noise Acquisition device is and institute
State the electrical connection of noise signal processing module.
Further, the Noise Acquisition device includes first shell and acoustic sensor, the acoustic sensor setting
In the inner surface of the first shell, the side of the first shell is formed opening and is adopted using the noise as the Noise Acquisition device
Collect port.
Further, the Noise Acquisition device further includes waterproof membrane, and the waterproof membrane is covered in the Noise Acquisition port.
Further, micropore is offered on the waterproof membrane, the micropore is in threadiness and is interconnected.Further,
The first shell is made of waterproof material.
On the other hand, the utility model proposes a kind of dish-washing machine, the dish-washing machine includes second shell and above-mentioned active
Denoising device, the active noise reducing device include Noise Acquisition module, noise signal processing module and sound source generators, described
Noise signal processing module is electrically connected with the Noise Acquisition module and the sound source generators；
The Noise Acquisition module is used for acquisition noise signal, and the noise signal transmission to noise signal is handled mould
Block；
The noise signal processing module is used for when receiving the noise signal, generates noise reduction instruction, and will be described
Noise reduction instruction is transmitted to the sound source generators；
The sound source generators issue noise reduction sound wave for responding the noise reduction instruction, wherein the noise reduction sound wave
The opposite in phase of phase and the noise signal.
The sound source generators and the Noise Acquisition module are all set in the inner surface of the second shell.
Further, the dish-washing machine inner surface is made of waterproof material.
Compared with the prior art, the utility model has the following beneficial effects: a kind of active noise reduction provided by the utility model
Device, active noise reducing device include Noise Acquisition module, noise signal processing module and sound source generators, noise signal processing
Module is electrically connected with Noise Acquisition module and sound source generators；Noise Acquisition module is used for acquisition noise signal, and by noise
Signal is transmitted to noise signal processing module；Noise signal processing module is used for when receiving noise signal, is generated noise reduction and is referred to
It enables, and noise reduction instruction is transmitted to sound source generators；Sound source generators are used to instruct in response to noise reduction and issue noise reduction sound wave,
In, the phase of noise reduction sound wave and the opposite in phase of noise signal.Since noise signal processing module noise reduction generated instructs energy
It drives sound source generators to issue the opposite in phase noise reduction sound wave with noise signal, therefore can effectively eliminate noise from the root
Source, and the excessive space layout of dish-washing machine will not be occupied, cost is effectively reduced, the safety coefficient of product is improved, into
And improve the user experience effect of dish-washing machine.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
Fig. 1 shows a kind of Noise Acquisition device structural schematic diagram provided by the utility model.
Fig. 2 shows a kind of structural schematic diagrams of Noise Acquisition device provided by the utility model.
Fig. 3 shows a kind of collected noise audiogram of Noise Acquisition device institute provided by the utility model.
Fig. 4 shows the noise reduction sound wave waveform diagram that a kind of sound source generators provided by the utility model are issued.
Fig. 5 shows noise signal sound wave provided by the utility model and noise reduction sound wave complex superposition waveform diagram.
Fig. 6 shows a kind of dishwasher structure schematic diagram provided by the utility model.
Primary symbols explanation: 100- active noise reducing device；110- noise signal acquisition module；120- noise processed module；
200- Noise Acquisition device；210- Noise Acquisition port；220- acoustic sensor；230- first shell；300- dish-washing machine；310-
Second shell；320- sound source generators.
Specific embodiment
Below in conjunction with attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to
The range of the utility model protection.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "inner", "outside" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship usually put, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.The above descriptions are merely preferred embodiments of the present invention, and it is practical new to be not limited to this
Type, for those skilled in the art, the present invention may have various modifications and changes.All essences in the utility model
Mind and principle within, any modification, equivalent replacement, improvement and so on, should be included in the protection scope of the utility model it
It is interior.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile it is practical new at this
In the description of type, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relatively important
Property.
First embodiment
Fig. 1 is please referred to, is a kind of block diagram of active noise reducing device 100 provided by the utility model.Active drop
Device 100 of making an uproar includes Noise Acquisition module 110, noise signal processing module 120 and sound source generators 320, at noise signal
Reason module 120 is electrically connected with Noise Acquisition module 110 and sound source generators 320.
Noise Acquisition module 110 is used for acquisition noise signal, and by noise signal transmission to noise signal processing module
120。
In a kind of preferred embodiment, the Noise Acquisition module 110 includes multiple Noise Acquisition devices 200, Mei Gesuo
Noise Acquisition device 200 is stated to be electrically connected with the noise signal processing module 120.
It referring to figure 2., is a kind of structural schematic diagram of Noise Acquisition device 200 provided by the utility model.The noise is adopted
Storage 200 includes first shell 230 and acoustic sensor 220.
First shell 230 is made of waterproof material, is made an uproar to avoid the water flow intrusion in 300 course of work of dish-washing machine
Inside sound collector 200, while the side of first shell 230 is formed opening and is adopted using the noise as the Noise Acquisition device 200
Collect port 210.In a kind of preferred embodiment, a kind of 210 surface of the Noise Acquisition port film ventilative using water-proof sound-transmitting
It is covered., can be to avoid during acquisition noise by the way that the ventilative film of the water-proof sound-transmitting is arranged, spray arm ejects
Water flow to being had an impact inside Noise Acquisition device 200.
The acoustic sensor 220 is set to the inner surface of the first shell 230, which is used for will
Collected noise signal is converted to electric signal and is transmitted to noise signal processing module 120.
It should be noted that the quantity of the acoustic sensor 220 is at least two.
Noise signal processing module 120 is used for when receiving noise signal, generates noise reduction instruction, and noise reduction is instructed and is passed
Transport to sound source generators 320.
Noise signal processing module 120 includes processing chip and signal amplification circuit.The processing chip and the letter
The electrical connection of number amplifying circuit.
Processing chip is used to obtain the noise spectrum of the noise signal, and generates noise control according to the noise spectrum
Acoustic field signal, and the noise control acoustic field signal is scaled the noise reduction and is instructed.
Processing chip is used to noise signal being converted to noise spectrum, to generate noise control sound according to the noise spectrum
Field signal, and then the noise control acoustic field signal is scaled the noise reduction and is instructed.
It should be noted that noise reduction instruction is that noise reduction drives audio signal, noise reduction driving audio signal is for driving sound
Source generator 320 issues noise reduction sound wave.
Amplifying circuit is electrically connected with processing chip, and amplifying circuit is used to carry out signal to the noise reduction instruction that processing chip generates
Amplification.
Sound source generators 320 are used to instruct in response to noise reduction and issue noise reduction sound wave, to realize active noise reduction.
It please gather referring to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is acquired by a kind of Noise Acquisition device 200 provided by the utility model
The noise audiogram arrived；Fig. 4 is by a kind of noise reduction acoustic waveform that sound source generators 320 issue provided by the utility model
Figure；Fig. 5 is noise signal sound wave provided by the utility model and noise reduction sound wave complex superposition waveform diagram.
Wherein, the opposite in phase of the phase and noise signal of noise reduction sound wave, the voice signal of opposite in phase theoretically can
It significantly balances out, therefore the enough effective counteracting noise sound waves of noise reducing wave energy that sound source generators are issued, reaches drop
The effect made an uproar.
In conclusion the working principle of the active noise reducing device 100 are as follows: the Noise Acquisition device 200 of Noise Acquisition module 110
For acquisition noise signal, and by noise signal transmission to noise signal processing module 120.Receiving for signal processing module is made an uproar
The processing chip of acoustical signal, noise signal processing module 120 carries out operation to noise signal, and exports the noise of the noise signal
Frequency spectrum to generate noise control acoustic field signal according to the noise spectrum, and then the noise control acoustic field signal is scaled
The noise reduction instruction.The amplifying circuit of last noise signal processing module 120, which instructs noise reduction, carries out signal amplification.It is amplified
Noise reduction instruction is transferred to sound source generators 320, and sound source generators 320 instruct according to noise reduction and issue the phase with noise signal
Opposite noise reduction sound wave.
Second embodiment
The utility model embodiment additionally provides a kind of dish-washing machine 300, and it is high to have noiseless, at low cost and safety coefficient
The advantages that.
Fig. 6 is please referred to, is a kind of 300 structural schematic diagram of dish-washing machine provided by the utility model.The dish-washing machine 300 includes
Active noise reducing device 100 described in second shell 310 and first embodiment.The active noise reducing device 100 includes Noise Acquisition
Module 110, noise signal processing module 120 and sound source generators 320, noise signal processing module 120 and Noise Acquisition mould
Block 110 and sound source generators 320 are electrically connected.
Noise Acquisition module 110 is used for acquisition noise signal, and by noise signal transmission to noise signal processing module
120.In a kind of preferred embodiment, the Noise Acquisition module 110 includes multiple Noise Acquisition devices 200, each described to make an uproar
Sound collector 200 is electrically connected with the noise signal processing module 120, and Noise Acquisition device 200 is located at dish-washing machine 300
Inner surface.
It referring to figure 2., is a kind of structural schematic diagram of Noise Acquisition device 200 provided by the utility model.The noise is adopted
Storage 200 includes first shell 230 and acoustic sensor 220.
First shell 230 is made of waterproof material, is made an uproar to avoid the water flow intrusion in 300 course of work of dish-washing machine
Inside sound collector 200, while the side of first shell 230 is formed opening and is adopted using the noise as the Noise Acquisition device 200
Collect port 210, which is handled using water-proof sound-transmitting ventilating structure, to avoid during acquisition noise, is sprayed
The water flow that ejects of leaching arm inside Noise Acquisition device 200 to having an impact.
In a kind of preferred embodiment, 210 surface of Noise Acquisition port using a kind of water-proof sound-transmitting breathe freely film into
Row covering.
Noise signal processing module 120 is used for when receiving noise signal, generates noise reduction instruction, and noise reduction is instructed and is passed
Transport to sound source generators 320.
Noise signal processing module 120 includes processing chip and signal amplification circuit.The processing chip and the letter
The electrical connection of number amplifying circuit.
Processing chip is used to obtain the noise spectrum of the noise signal, and generates noise control according to the noise spectrum
Acoustic field signal, and the noise control acoustic field signal is scaled the noise reduction and is instructed.
Processing chip is used to noise signal being converted to noise spectrum, to generate noise control sound according to the noise spectrum
Field signal, and then the noise control acoustic field signal is scaled the noise reduction and is instructed.Amplifying circuit is electrically connected with processing chip,
Amplifying circuit is used to carry out signal amplification to the noise reduction instruction that processing chip generates.
Sound source generators 320 are used to instruct in response to noise reduction and issue noise reduction sound wave, to realize active noise reduction.
It please gather referring to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is acquired by a kind of Noise Acquisition device 200 provided by the utility model
The noise audiogram arrived；Fig. 4 is by a kind of noise reduction acoustic waveform that sound source generators 320 issue provided by the utility model
Figure；Fig. 5 is noise signal sound wave provided by the utility model and noise reduction sound wave complex superposition waveform diagram.
Wherein, the opposite in phase of the phase and noise signal of noise reduction sound wave, the voice signal of opposite in phase theoretically can
Significantly balance out.
In a kind of preferred embodiment, which is located at the inner surface of dish-washing machine 300, and quantity is at least
It is two.
To sum up, a kind of active noise reducing device provided by the utility model, active noise reducing device include Noise Acquisition module, make an uproar
Underwater Acoustic channels module and sound source generators, noise signal processing module are electrically connected with Noise Acquisition module and sound source generators
It connects；Noise Acquisition module is used for acquisition noise signal, and by noise signal transmission to noise signal processing module；At noise signal
It manages module to be used for when receiving noise signal, generates noise reduction instruction, and noise reduction instruction is transmitted to sound source generators；Sound source hair
Raw device is used to instruct in response to noise reduction and issue noise reduction sound wave, wherein the phase of noise reduction sound wave and the opposite in phase of noise signal.By
Sound source generators can be driven to issue in the noise reduction instruction generated of noise signal processing module to drop with the opposite in phase of noise signal
Noise waves, therefore noise source can be effectively eliminated from the root, and will not occupy the excessive space layout of dish-washing machine, effectively
Reduce costs, improve the safety coefficient of product, and then improve the user experience effect of dish-washing machine.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of active noise reducing device, which is characterized in that the active noise reducing device includes Noise Acquisition module, at noise signal
It manages module and sound source generators, the noise signal processing module and the Noise Acquisition module and the sound source generators is equal
Electrical connection；
The Noise Acquisition module is used for acquisition noise signal, and by the noise signal transmission to noise signal processing module；
The noise signal processing module is used for when receiving the noise signal, generates noise reduction instruction, and by the noise reduction
Instruction is transmitted to the sound source generators；
The sound source generators issue noise reduction sound wave for responding the noise reduction instruction, wherein the phase of the noise reduction sound wave
With the opposite in phase of the noise signal.
2. active noise reducing device according to claim 1, which is characterized in that the noise signal processing module includes processing
Chip, the processing chip is used to obtain the noise spectrum of the noise signal, and generates noise control according to the noise spectrum
Acoustic field signal processed, and the noise control acoustic field signal is scaled the noise reduction and is instructed.
3. active noise reducing device according to claim 2, which is characterized in that the noise signal processing module further includes letter
Number amplifying circuit, the processing chip are electrically connected with the signal amplification circuit, and the signal amplification circuit is used for the drop
Instruction of making an uproar amplifies.
4. active noise reducing device according to claim 1, which is characterized in that the Noise Acquisition module includes multiple noises
Collector, each Noise Acquisition device are electrically connected with the noise signal processing module.
5. active noise reducing device according to claim 4, which is characterized in that the Noise Acquisition device include first shell with
And acoustic sensor, the acoustic sensor are set to the inner surface of the first shell, the side of the first shell is formed
It is open using the Noise Acquisition port as the Noise Acquisition device.
6. active noise reducing device according to claim 5, which is characterized in that the Noise Acquisition device further includes waterproof membrane,
The waterproof membrane is covered in the Noise Acquisition port.
7. active noise reducing device according to claim 6, which is characterized in that micropore is offered on the waterproof membrane, it is described
Micropore is in threadiness and is interconnected.
8. active noise reducing device according to claim 5, which is characterized in that the first shell uses waterproof material system
At.
9. a kind of dish-washing machine, which is characterized in that the dish-washing machine includes second shell and any one of such as claim 1-8
The active noise reducing device, the sound source generators and the Noise Acquisition module are all set in the interior table of the second shell
Face.
10. dish-washing machine according to claim 9, which is characterized in that the dish-washing machine inner surface is made of waterproof material.
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| CN201821673616.5U CN209168729U (en) | 2018-10-15 | 2018-10-15 | A kind of active noise reducing device and dish-washing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192191A (en) * | 2018-10-15 | 2019-01-11 | 广东万家乐厨房科技有限公司 | A kind of active noise reducing device and dish-washing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192191A (en) * | 2018-10-15 | 2019-01-11 | 广东万家乐厨房科技有限公司 | A kind of active noise reducing device and dish-washing machine |
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