CN209596354U - Denoising draught fan and ventilator with the blower - Google Patents
Denoising draught fan and ventilator with the blower Download PDFInfo
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- CN209596354U CN209596354U CN201821870316.6U CN201821870316U CN209596354U CN 209596354 U CN209596354 U CN 209596354U CN 201821870316 U CN201821870316 U CN 201821870316U CN 209596354 U CN209596354 U CN 209596354U
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Abstract
The utility model provides a kind of denoising draught fan, is applied to ventilator characterized by comprising fan body, shell and denoising device；The shell wraps up the fan body and constitutes fan main body, and the fan main body is provided with fan air inlet, blower gas outlet；The denoising device includes sound collector, processor and loudspeaker；The sound collector is electrically connected with the processor, and the processor is electrically connected with the loudspeaker；Air inlet air duct is provided at the fan air inlet, the denoising device is set in air inlet air duct；It is provided with reserved space between the fan body and shell, is provided with acoustic damping materials in the reserved space；The collaboration Noise Reduction of acoustic damping materials and denoising device effectively eliminates the noise generated when blower work, improves the comfort that ventilator user uses, promotes the usage experience of user.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of denoising draught fan and with the ventilator of the blower.
Background technique
A kind of effective means of the ventilator as energy artificial substituting expiratory positive airway pressure function, has been commonly used to treatment sleep-respiratory
Pause and other disordered breathings.And ventilator is in use, the friction of draught fan impeller and air, motor rotate impeller
Rotation etc. all can make blower generate biggish noise at runtime.Noise will affect the sleep of patient and other people, especially
At night, not to be affected when making patient using ventilator sleep therapy, therefore reducing ventilator noise as much as possible is to need
It solves the problems, such as.Currently, mainly having the control of fan noise using acoustic material, gas circuit structure transformation and increasing rigidity
The methods of protecting component: using acoustic material, wrapped up blower with acoustic material, or in blower interior sound insulation by filling material,
When having certain effect for the reduction of fan noise, but carrying out noise reduction using acoustic material merely, then to acoustic material
It is required that it is relatively high, while being wrapped blower with acoustic material, increase the volume of ventilator, and used as household and Sleeping Center
Ventilator, for convenient and cost control, ventilator size is limited, and therefore, it is difficult to reach ideal requirement.
Gas circuit structure transformation manufactures sound insulation by gas circuit structure by carrying out more optimized design to blower gas circuit structure
Environment, cost is relatively low for such method, but requires gas circuit structure high, it is not easy to realize.
Increase rigid protection component, by increasing the fixed blower of more rigid elements in blower, reduces fan operation
When the vibrating noise that generates.Such method also results in the problems such as blower fan volume increase and increased costs.
This programme be directed to ventilator noise reduction process problem, a kind of blower is provided, blower the combination active noise reduction and passively
Noise reduction technology has better noise reduction effect.
Utility model content
In order to solve the problems in the existing technology, the utility model is intended to provide a denoising draught fan, applied to exhaling
Suction machine, it is intended to which the noise for reducing the generation of fan operation process makes patient from the influence of noise.
This programme provides a kind of denoising draught fan, is applied to ventilator characterized by comprising fan body, shell and drop
It makes an uproar device；The shell wraps up the fan body and constitutes fan main body, and the fan main body is provided with fan air inlet, blower
Gas outlet；The denoising device includes sound collector, processor and loudspeaker；
The sound collector is electrically connected with the processor, and the processor is electrically connected with the loudspeaker；
Air inlet air duct is provided at the fan air inlet, the denoising device is set in air inlet air duct；
It is provided with reserved space between the fan body and shell, is provided with acoustic damping materials in the reserved space.
Further, the sound collector is sent to the place to acquire noise signal, and by the noise signal
Manage device；
Further, the noise signal that the processor is sent to receive the sound collector, and to described
Noise signal is handled, and noise reduction acoustic signals are obtained, and the noise reduction acoustic signals are sent to the loudspeaking by the processor
Device, wherein the frequency of the noise reducing wave signal is identical as the frequency of the noise signal, the phase of the noise reduction acoustic signals
With the opposite in phase of the noise signal.
Further, the noise reduction acoustic signals that the loudspeaker is sent to receive the processor, and discharge institute
State noise reduction acoustic signals.
Preferably, the sound collector is one or more first microphone.
Preferably, the loudspeaker is one or more second microphone.
Optionally, the acoustic damping materials are sound-isolating sponge.
A kind of ventilator, which is characterized in that including denoising draught fan described above.
A kind of denoising draught fan provided by the utility model includes: fan body, shell and denoising device；Shell wraps up blower
Ontology constitutes fan main body, and fan main body is provided with fan air inlet and blower gas outlet, pre- between fan body and shell
Acoustic damping materials are provided in spacing, denoising device is set in fan air inlet air duct；The association of acoustic damping materials and denoising device
Same Noise Reduction effectively eliminates the noise generated when blower work, improves the comfort that ventilator user uses, promotes user's
Usage experience.
Detailed description of the invention
Attached drawing is to further understand for providing to the utility model embodiment, and constitute part of specification,
It is used to explain the utility model embodiment together with following specific embodiment, but does not constitute to the utility model embodiment
Limitation.In the accompanying drawings:
Fig. 1 is the denoising device structural schematic diagram of one embodiment；
Fig. 2 is that the noise of denoising device eliminates schematic diagram；
Description of symbols:
Ventilator 1；
Fan air inlet 21, fan air inlet air duct 211, blower gas outlet 22；
Sound collector 31, processor 32, loudspeaker 33.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
In one embodiment, a kind of denoising draught fan is applied to ventilator 1, which includes: fan body, shell
And denoising device；Shell wraps up fan body and constitutes fan main body, is provided with fan air inlet 21 on fan main body and blower goes out
Port 22 is provided with fan air inlet air duct 211 at fan air inlet；
Such as Fig. 1, denoising device is set in fan air inlet air duct 211, and denoising device includes sound collector 31, processing
Device 32 and loudspeaker 33；Sound collector 31 is electrically connected with processor 32, and processor 32 is electrically connected with loudspeaker 33.
It is provided with reserved space between fan body and shell, is provided with acoustic damping materials in the reserved space.
Preferably, the acoustic damping materials are sound-isolating sponge.
In the present embodiment, sound collector 31 is converted into acquisition noise signal, and by collected noise signal
Digital signal is simultaneously sent to the processor 32；Processor 32 is to receive the digital signal of the transmission of sound collector 31 simultaneously
After handling it, one group of noise reduction acoustic signals is exported, the frequency of the noise reduction acoustic signals and the frequency of noise signal are identical,
The noise reduction acoustic signals are sent to by the phase of the noise reduction acoustic signals and the opposite in phase of noise signal, the processor 32
The loudspeaker 33.
The noise reduction acoustic signals that the loudspeaker 33 is sent to receive the processor 32, and discharge noise reduction sound wave letter
Number.The noise reduction acoustic signals are first converted into analog signal before discharging the noise reduction acoustic signals by loudspeaker.The noise reduction sound wave
Signal is overlapped with the noise signal, carries out back elimination to noise.
In some embodiments, sound collector 31 is one or more first microphone.
In some embodiments, loudspeaker 33 is one or more second microphone.
Sound-isolating sponge is arranged in the reserved space between fan body and shell, and the high frequency generated when to fan operation is made an uproar
Sound is tentatively damped and is absorbed, and avoids high-frequency noise and noise reduction acoustic signals in the intracavitary generation of the narrow sound in fan air inlet air duct
Phase difference, and reversed noise reduction acoustic signals is made to generate acoustic signals in the same direction under deviation action, cause to increase and make an uproar.
In some embodiments, the denoising device is arranged in the reserved space between fan body and shell.
In some embodiments, the denoising device is arranged in the air duct of blower gas outlet.
Specific noise reduction process when denoising draught fan illustrated below works:
Ventilator work when, gas is entered in blower by fan air inlet 21 by air duct, draught fan impeller rotation, impeller with
The friction of air, generates noise, and acoustic damping materials carry out initial absorption and noise reduction to noise；Sound collector 31 is to the noise at this
It is acquired, and collected noisy analog signal is converted into digital signal and is sent to processor 32,32 reception sound of processor
The noise signal sent in sound collector 31 obtains one group of noise reduction acoustic signals by processing of circuit, the noise reduction acoustic signals with
The frequency of noise signal is identical, opposite in phase, and the noise reduction acoustic signals are sent to loudspeaker 33, and loudspeaker 33 receives the drop
Noise waves signal simultaneously discharges the noise reduction acoustic signals.Such as Fig. 2, the noise reduction sound wave and noise sound wave are overlapped reverse phase elimination, in
And noise, realize active noise reduction.
The utility model provides a kind of denoising draught fan, comprising: fan body, shell and denoising device；Shell wraps up blower
Ontology constitutes fan main body, and fan main body is provided with fan air inlet and blower gas outlet, pre- between fan body and shell
Acoustic damping materials are provided in spacing, denoising device is set in fan air inlet air duct；The association of acoustic damping materials and denoising device
Same Noise Reduction effectively eliminates the noise generated when blower work, improves the comfort that ventilator user uses, promotes user's
Usage experience.The utility model further includes a kind of ventilator, including denoising draught fan described above.
The optional embodiment of the utility model embodiment, still, the utility model is described in detail in conjunction with attached drawing above
Embodiment be not limited to the above embodiment in detail can be in the range of the technology design of utility model embodiment
A variety of simple variants are carried out to the technical solution of the utility model embodiment, these simple variants belong to the utility model implementation
The protection scope of example.It is further to note that specific technical features described in the above specific embodiments, In
In reconcilable situation, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the utility model
No further explanation will be given to various combinations of possible ways for embodiment.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model embodiment, as long as
It equally should be considered as the utility model embodiment disclosure of that without prejudice to the thought of the utility model embodiment.
Claims (7)
1. a kind of denoising draught fan is applied to ventilator characterized by comprising fan body, shell and denoising device；It is described
Shell wraps up the fan body and constitutes fan main body, and the fan main body is provided with fan air inlet, blower gas outlet；It is described
Denoising device includes sound collector, processor and loudspeaker；
The sound collector is electrically connected with the processor, and the processor is electrically connected with the loudspeaker；
Air inlet air duct is provided at the fan air inlet, the denoising device is set in air inlet air duct；
It is provided with reserved space between the fan body and shell, is provided with acoustic damping materials in the reserved space.
2. denoising draught fan according to claim 1, which is characterized in that the sound collector to acquisition noise signal,
And the noise signal is sent to the processor.
3. denoising draught fan according to claim 1, which is characterized in that the processor is to receive the sound collector
The noise signal sent, and the noise signal is handled, noise reduction acoustic signals are obtained, the processor will be described
Noise reduction acoustic signals are sent to the loudspeaker, wherein the frequency phase of the frequency of the noise reducing wave signal and the noise signal
Together, the opposite in phase of the phase Yu the noise signal of the noise reduction acoustic signals.
4. denoising draught fan according to claim 1, which is characterized in that the loudspeaker is sent to receive the processor
The noise reduction acoustic signals, and discharge the noise reduction acoustic signals.
5. denoising draught fan according to claim 1, which is characterized in that the sound collector is one or more first wheats
Gram wind.
6. denoising draught fan according to claim 1, which is characterized in that the loudspeaker is one or more second Mikes
Wind.
7. a kind of ventilator, which is characterized in that including denoising draught fan as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821870316.6U CN209596354U (en) | 2018-11-14 | 2018-11-14 | Denoising draught fan and ventilator with the blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821870316.6U CN209596354U (en) | 2018-11-14 | 2018-11-14 | Denoising draught fan and ventilator with the blower |
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| Publication Number | Publication Date |
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| CN209596354U true CN209596354U (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821870316.6U Active CN209596354U (en) | 2018-11-14 | 2018-11-14 | Denoising draught fan and ventilator with the blower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111210798A (en) * | 2020-01-07 | 2020-05-29 | 珠海格力电器股份有限公司 | Noise reduction assembly, washing machine, and determination method and determination device of noise reduction algorithm |
-
2018
- 2018-11-14 CN CN201821870316.6U patent/CN209596354U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111210798A (en) * | 2020-01-07 | 2020-05-29 | 珠海格力电器股份有限公司 | Noise reduction assembly, washing machine, and determination method and determination device of noise reduction algorithm |
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