CN207621083U - Hush pipe and lung ventilator with the hush pipe - Google Patents
Hush pipe and lung ventilator with the hush pipe Download PDFInfo
- Publication number
- CN207621083U CN207621083U CN201721646109.8U CN201721646109U CN207621083U CN 207621083 U CN207621083 U CN 207621083U CN 201721646109 U CN201721646109 U CN 201721646109U CN 207621083 U CN207621083 U CN 207621083U
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- China
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- noise reduction
- tube body
- hush pipe
- reduction tube
- pipe
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Abstract
The utility model is related to the field of medical instrument technology, disclose a kind of hush pipe, including noise reduction tube body and the casing for being arranged the noise reduction tube body；The noise reduction tube body is the tubular structure that outlet end is extended to from arrival end, its outer wall is equipped with multiple grooves opened up in an axial direction, the arrival end of noise reduction tube body is run through in described groove one end, and the other end makes to form the recess end wall with end face structure on noise reduction tube body；Multiple silencing cavities for noise reduction are formed when the noise reduction tube body is threaded through in described sleeve pipe, between the multiple groove and the inner wall of described sleeve pipe.The invention also discloses a kind of lung ventilators with the hush pipe.The utility model hush pipe is simple in structure, and compared with traditional hush pipe structure, silencing cavity is easy to be molded, and has Double-noise-reduction effect；The lung ventilator of the utility model can effectively reduce the noise of wind turbine generation, improve the comfort of Use of respirator.
Description
Technical field
The utility model is related to the field of medical instrument technology, and in particular to a kind of hush pipe and with hush pipe breathing
Machine.
Background technology
The noise level of lung ventilator directly affects the usage experience of user, therefore noise is the weight for evaluating lung ventilator performance
Want index.Noise typically is reduced by the way that silencing means is arranged in lung ventilator at present, but is typically in wind in existing lung ventilator
The air inlet end of machine designs the silencing means such as bend, variable cross-section；But during wind turbine accelerates the air of inflow
The noise of different frequency is also will produce, this is the main source of existing lung ventilator noise.
Accordingly, it is desirable to provide a kind of hush pipe and the lung ventilator with the hush pipe, by the air outlet slit end of wind turbine
Joint noise reduction device reduces the noise generated by wind turbine.
Utility model content
The utility model provides a kind of hush pipe and the lung ventilator with the hush pipe, for solve in lung ventilator due to
The excessive problem of noise that wind turbine generates.
One of the utility model is designed to provide a kind of hush pipe, including noise reduction tube body and for being arranged described disappear
The casing of sound tube ontology；The noise reduction tube body is the tubular structure that outlet end is extended to from arrival end, and outer wall is equipped with more
The arrival end of noise reduction tube body is run through in a groove opened up in an axial direction, described groove one end, and the other end makes shape on noise reduction tube body
At the recess end wall with end face structure；When the noise reduction tube body is threaded through in described sleeve pipe, the multiple groove with it is described
Multiple silencing cavities for noise reduction are formed between the inner wall of casing.
Further, length h=c/4f of the groove；The c is the velocity of sound, and f is the frequency for waiting for noise-reducing.
Further, length l >=c/ f of recess end wall tool noise reduction tube body outlet end1。
Further, the noise reduction tube body and casing are made of rubber material.
Second of the utility model is designed to provide a kind of lung ventilator, and the lung ventilator includes wind turbine and any of the above-described
Hush pipe described in kind, the arrival end of the hush pipe are connect with the air outlet slit end of the wind turbine.
Further, the radial dimension of the muffler ontology is more than the radial dimension of the blower air outlet end.
Further, the lung ventilator further includes heating and moistening case, and the heating and moistening case includes sequentially connected heating
Humidification chamber and escape pipe, the heating and moistening chamber connect with the opposite end of escape pipe connecting pin and the cannula exit end of the hush pipe
It connects.
Further, the sectional dimension of the heating and moistening chamber is more than the section of the sectional dimension and escape pipe of described sleeve pipe
Size.Further, the wind turbine is connected with heating and moistening case using removably.
The hush pipe of the utility model is simple in structure, and compared with traditional hush pipe structure, silencing cavity is easy to be molded, and has
Double-noise-reduction effect；The lung ventilator of the utility model can effectively reduce the noise of wind turbine generation, improve Use of respirator
Comfort.
Description of the drawings
Fig. 1 is the phantom of silencing means in the utility model first embodiment.
Fig. 2 is the structural schematic diagram of muffler in the utility model first embodiment.
Fig. 3 is the part-structure schematic diagram of lung ventilator in the utility model second embodiment.
Fig. 4 is the structural schematic diagram of heating and moistening case in the utility model second embodiment.
Fig. 5 is the phantom of lung ventilator in the utility model second embodiment.
Fig. 6 is the phantom of lung ventilator in the another alternate embodiment of the utility model.
Specific implementation mode
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
Mode, the present invention will be further described in detail.
In this specification, each component is arrival end close to one end that noise occurs in definition hush pipe, is occurred far from noise
One end be outlet end；It is axial to define each gas in pipelines flow direction, and the direction of vertical axial is radial.
With reference to figure 1, Fig. 2, the utility model first embodiment provides a kind of hush pipe, including noise reduction tube body 1 and use
In the casing 2 for being arranged the noise reduction tube body 1；The noise reduction tube body is the tubulose knot that outlet end 12 is extended to from arrival end 11
Structure, 1 outer wall of noise reduction tube body are equipped with multiple grooves 13 opened up in an axial direction, and hush pipe sheet is run through in 13 one end of the groove
The arrival end 11 of body 1, the other end make to form the recess end wall 131 with end face structure on noise reduction tube body；The hush pipe sheet
When body 1 is threaded through in described sleeve pipe 2, formed for the multiple of noise reduction between the multiple groove 13 and the inner wall of described sleeve pipe 2
Silencing cavity.
The hush pipe of the utility model is quarter-wave hush pipe, and quarter-wave hush pipe utilizes interface
Reflection, make originally the sound wave propagated forward be returned to origin and turn back again and propagate forward, at the origin with not yet reflected
Other sound waves propagated forward converge, since the two is equal on amplitude, the odd-multiple of poor 180 degree in phase, to mutually
Interference and offset.The principle of noise reduction of the hush pipe of the utility model is as follows：（1）After noise enters from cannula inlet port end, portion
Divide noise to enter silencing cavity from noise reduction tube body arrival end, is reflected by recess end wall so that sound wave is returned to noise reduction tube body
Arrival end realizes the effect for reducing noise；（2）After partial noise enters from cannula inlet port end, by noise reduction tube body arrival end end
Wall reflects so that sound wave returns to cannula inlet port end, realizes the effect for reducing noise.
Compared with traditional hush pipe structure, hush pipe is arranged to dismountable two parts by the utility model so that noise reduction
The molding of chamber is simpler, and the casing of the utility model can also be the pipeline waited in denoising device, only need to be straight by noise reduction tube body
It connects to be arranged in the pipeline for waiting for denoising device and noise reduction can be realized, simplify the structure of hush pipe；In addition, the utility model disappears
Sound tube has Double-noise-reduction, improves noise reduction.
It should be noted that the length of installation position and groove 13 of the noise reduction tube body 1 of the utility model in casing 2
Degree can be adjusted according to noise reduction demand.
In the present embodiment, the length h of the groove1=c/4f1, between described sleeve pipe arrival end and noise reduction tube body arrival end
Length h2=c/4f2；Wherein, the c is the velocity of sound, f1And f2For the frequency of noise to be reduced, can be the same or different.
During reducing noise, the specification of hush pipe can be selected according to the main frequency of noise to be reduced, it is more preferable to realize
Noise reduction.
Further, length l >=c/f of recess end wall tool noise reduction tube body outlet end0；；The f0For to noise tribute
Offer the cutoff frequency of big frequency range.This programme can avoid sound wave from continuing to transmit across hush pipe by diffraction, further
Improve noise reduction.
Further, the material of the noise reduction tube body and casing is rubber.The hush pipe of this programme has preferable drop
It makes an uproar effect.
With reference to figure 3 to Fig. 5, the utility model second embodiment provides a kind of sleep-respiratory machine, the sleep of the present embodiment
Lung ventilator includes wind turbine 3 and hush pipe as in the first embodiment, by the sky of the arrival end of the hush pipe and the wind turbine
Gas outlet end connects, and can effectively reduce the noise that the wind turbine generates.
Further, the radial dimension of the noise reduction tube body is more than the radial dimension at the air outlet slit end of the wind turbine.
This programme can effectively avoid hush pipe from generating resistance to wind turbine.
Further, the sleep-respiratory machine further includes heating and moistening case 4；The heating and moistening case 4 includes being sequentially connected
Air inlet pipe 41, heating and moistening chamber 42 and escape pipe 43, the sectional dimension of the heating and moistening 42 radially be more than air inlet pipe 41
With the sectional dimension of escape pipe 43 radially；The air inlet pipe 41 of the heating and moistening case 4 is connect with the outlet end of the hush pipe.
In the present solution, the variable cross-section design between air inlet pipe, heating and moistening chamber and escape pipe, can further decrease wind turbine generation
Noise.
Further, the wind turbine 3 is connected with heating and moistening case 4 using removably.
In one alternate embodiment of the utility model, difference lies in the hush pipe is plugged in heating with second embodiment
In the air inlet pipe for humidifying case.
In the another alternate embodiment of the utility model, difference lies in as shown in fig. 6, the air inlet with second embodiment
Pipe 41 ' is used as the casing of hush pipe, and the noise reduction tube body 1 is set to air inlet pipe 41 ', and hush pipe is formed with air inlet pipe 41 '.
The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all
It is new to should be included in this practicality for all any modification, equivalent and improvement made by within the spirit and principles of the utility model etc.
Within the protection domain of type.
Claims (9)
1. a kind of hush pipe, which is characterized in that the casing including noise reduction tube body and for being arranged the noise reduction tube body；It is described
Noise reduction tube body is the tubular structure that outlet end is extended to from arrival end, and outer wall is equipped with multiple grooves opened up in an axial direction,
The arrival end of noise reduction tube body is run through in described groove one end, and the other end makes to form the groove with end face structure on noise reduction tube body
End wall；It is formed and is used when the noise reduction tube body is threaded through in described sleeve pipe, between the multiple groove and the inner wall of described sleeve pipe
In multiple silencing cavities of noise reduction.
2. hush pipe according to claim 1, which is characterized in that the length h of the groove1=c/4f1；The c is the velocity of sound,
f1To wait for the frequency of noise-reducing.
3. hush pipe according to claim 2, which is characterized in that the length of recess end wall tool noise reduction tube body outlet end
Spend l >=c/f0；The f0For the cutoff frequency to the big frequency range of noise contribution.
4. hush pipe according to claim 3, which is characterized in that the noise reduction tube body and casing are by rubber material system
At.
5. a kind of lung ventilator, which is characterized in that the lung ventilator include wind turbine and according to any one of claims 1 to 4
Hush pipe, the arrival end of the hush pipe are connect with the air outlet slit end of the wind turbine.
6. lung ventilator according to claim 5, which is characterized in that the radial dimension of the muffler ontology is more than the wind
The radial dimension at machine air outlet slit end.
7. lung ventilator according to claim 6, which is characterized in that the lung ventilator further includes heating and moistening case, described to add
Temperature humidification case includes sequentially connected heating and moistening chamber and escape pipe, the opposite end of the heating and moistening chamber and escape pipe connecting pin
It is connect with the cannula exit end of the hush pipe.
8. lung ventilator according to claim 7, which is characterized in that the sectional dimension of the heating and moistening chamber is more than the set
The sectional dimension of pipe and the sectional dimension of escape pipe.
9. lung ventilator according to claim 7, which is characterized in that the wind turbine and heating and moistening case use removably
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721646109.8U CN207621083U (en) | 2017-11-30 | 2017-11-30 | Hush pipe and lung ventilator with the hush pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721646109.8U CN207621083U (en) | 2017-11-30 | 2017-11-30 | Hush pipe and lung ventilator with the hush pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207621083U true CN207621083U (en) | 2018-07-17 |
Family
ID=62825118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721646109.8U Active CN207621083U (en) | 2017-11-30 | 2017-11-30 | Hush pipe and lung ventilator with the hush pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207621083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854542A (en) * | 2017-11-30 | 2019-06-07 | 深圳市美好创亿医疗科技有限公司 | Hush pipe and ventilator with the hush pipe |
| CN111237137A (en) * | 2020-02-25 | 2020-06-05 | 扬州大学 | Noise reduction device mounted on tower of wind turbine and wind turbine |
-
2017
- 2017-11-30 CN CN201721646109.8U patent/CN207621083U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854542A (en) * | 2017-11-30 | 2019-06-07 | 深圳市美好创亿医疗科技有限公司 | Hush pipe and ventilator with the hush pipe |
| CN111237137A (en) * | 2020-02-25 | 2020-06-05 | 扬州大学 | Noise reduction device mounted on tower of wind turbine and wind turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Longgang District of Shenzhen City, Guangdong province 518116 Longgang Street Community 6 new road bridge Baolong Baolong Industrial Park building B building 1-3 floor Patentee after: Shenzhen meimeimeichuangyi Medical Technology Co., Ltd Address before: Longgang District of Shenzhen City, Guangdong province 518116 Longgang Street Community 6 new road bridge Baolong Baolong Industrial Park building B building 1-3 floor Patentee before: MEHOW INNOVATIVE Ltd. |
|
| CP01 | Change in the name or title of a patent holder |