CN104689441B - A kind of lung ventilator fan noise reduction device - Google Patents
A kind of lung ventilator fan noise reduction device Download PDFInfo
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- CN104689441B CN104689441B CN201510129126.3A CN201510129126A CN104689441B CN 104689441 B CN104689441 B CN 104689441B CN 201510129126 A CN201510129126 A CN 201510129126A CN 104689441 B CN104689441 B CN 104689441B
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- fan
- flexible
- blower fan
- lower cover
- davit
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- 210000004072 lung Anatomy 0.000 title claims abstract description 24
- 230000009467 reduction Effects 0.000 title claims abstract description 23
- 238000013016 damping Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 210000000988 bone and bone Anatomy 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 241000270295 Serpentes Species 0.000 claims 1
- 239000000725 suspension Substances 0.000 abstract description 16
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 206010022000 influenza Diseases 0.000 description 2
- 239000012814 acoustic material Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 201000002859 sleep apnea Diseases 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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Abstract
A kind of lung ventilator fan noise reduction device, the denoising device includes flexible lower cover (3), (5) are covered in flexibility, Fan Box bottom vibration damping sheet (2) and Fan Box top vibration damping sheet (7), Fan Box bottom vibration damping sheet (2) is provided with blower fan back box (1), Fan Box top vibration damping sheet (7) is provided with blower fan top box (4), the flexible lower cover (3) is provided with Fan Box bottom vibration damping sheet (2), had in Fan Box top vibration damping sheet (7) and cover (5) in the flexibility, lid (5) cooperatively forms the closed cavity for accommodating the blower fan (8) on the flexible lower cover (3) and the flexibility, in the flexibility at least three suppending hole is provided with lid (5), provided with flexible davit (6) in each suppending hole, the blower fan (8) is suspended on flexible davit (6), snakelike closed airway (3 1) is formed between the flexible lower cover (3) and Fan Box bottom vibration damping sheet (2), present invention suspension coordinates parcel, the transmission that wind is made an uproar with fan noise is greatly lowered.
Description
Technical field
The present invention relates to lung ventilator field, and in particular to a kind of lung ventilator fan noise reduction device.
Background technology
Family expenses sleep type lung ventilator is mainly used among personal family, Sleeping Center and mini clinic, mainly for
Patient with apnea syndrome, in whole therapeutic process, patient is to be in sleep state, it is desirable to which surrounding enviroment are pacified
It is quiet, comfortable.Lung ventilator is that the gas in pipeline is pressurizeed by blower fan, and then plays therapeutic action to patient, worked
Blower fan inevitably sends noise in journey, and how to influence patient to sleep in minimum zone, not Noise measarement is each exhale
The key subjects that Xi Ji manufacturers will face.
Fan noise is broadly divided into two kinds, and one kind is blower fan quick rotation, the wind whistle that blade is produced with windage, one
It is vibrations caused by the reason such as blower fan own rotation and placement to plant, and mutually collides generation noise during vibrations with miscellaneous part.
The noise that general the latter produces is more much larger than the former, is main noise source.
In the prior art, the control for fan noise mainly has three kinds：1st, blower fan parcel there is into sound insulation material to abundant
Expect in the box (typically using EVA material), but so do higher to acoustic material requirement, and the volume of box typically can all be wanted
Ask larger, be unfavorable for the control of cost and the control of lung ventilator volume, because home ventilator be mainly within the family with sleep
The heart is used, for convenience, and what will not typically be done is too big.2nd, by gas circuit structure manufacture sound insulation environment, this method low cost, but it is right
Structural requirement is high, general difficult to realize.3rd, rigid connecting components fixation blower fan, reduction are increased by increasing special protective treatment
Blower fan vibrations reduce noise, but this scheme equally exists the problem of volume increase and cost increase.
CN202010337U discloses a kind of lung ventilator regulation silencing shock-reduction device, and two foams are fastened up and down, are provided with foam
Blower fan fixing groove, blower fan by fixing groove be fixed on above and below two foams fastening space in.The vibration of blower fan can equally be passed
It is delivered on foam, causes blower fan and foam to resonate together.
The CN103736186A of Changzhou Ke Mai Electronics Co., Ltd.s discloses a kind of blower fan denoising structure, surrounding tight
The fan body for having ventilative soft layer is encapsulated in sealed compartment together, and the sealed compartment surrounding closely connects with the ventilative soft layer
Touch, the sealed compartment upper and lower part is provided with air circulation room.The fan body of above-mentioned blower fan denoising structure still through
Ventilative soft layer is in close contact with sealed compartment, and such time length being hardened with ventilative soft layer, the vibration of fan body is same
Ventilative soft layer can be delivered to on sealed compartment, causing resonance.
The content of the invention
The problem of existing for above-mentioned prior art, the present invention, which provides one kind, really can effectively reduce by two kinds of noises of blower fan
The lung ventilator fan noise reduction device in source.
The present invention is achieved in that a kind of lung ventilator fan noise reduction device, and blower fan is arranged on by the denoising device
In the space of blower fan back box and the formation of blower fan top box, the denoising device includes lid, the damping of Fan Box bottom in flexible lower cover, flexibility
Piece and Fan Box top vibration damping sheet, are provided with Fan Box bottom vibration damping sheet in blower fan back box, and the blower fan is provided with blower fan top box
Box top vibration damping sheet, is provided with the flexible lower cover, vibration damping sheet has the flexibility on Fan Box top on the vibration damping sheet of Fan Box bottom
Lid cooperatively forms the closed cavity for accommodating the blower fan in upper lid, the flexible lower cover and the flexibility, is covered in the flexibility
It is provided with least three suppending hole, each suppending hole provided with flexible davit, the blower fan is suspended on flexible davit.
Further, the bottom design of the flexible lower cover has snakelike air channel groove, in the flexible lower cover and wind after assembling
Snakelike closed airway is formed between machine cassette bottom vibration damping sheet, using blower fan as origin, air inlet is located under the positive flexibility in 90 degree of directions
The sidewall bottom of lid, the snakelike closed airway, at least through two bendings, is then up through described since the air inlet
Flexible lower cover enters the top of the closed cavity, then drops to the fan air inlet of the blower fan bottom.
Further, the snakelike closed airway is smooth curve, at least two convex portions of the smooth curve and one
Recess.
Further, provided with connection flexible pipe at the blower fan gas outlet of the blower fan, the connection flexible pipe connects switching bend pipe,
Air flue outside the switching bend pipe connecting fan box.
Further, the flexible davit includes davit body and is located on the flange of the end of davit body, the davit body
Provided with buckling groove, the flexible davit is suspended in the suppending hole covered in the flexibility by flange, has card on the blower fan
Hole is connect, the blower fan is fixedly connected by blocked hole with the buckling groove of the flexible davit.
Further, the buckling groove of the davit body is thread groove, and the flexible davit further passes through flexible fastener spiral shell
Female buckling groove with davit body coordinates the fastening blower fan.
Further, lid is made of EVA material on the flexible lower cover and flexibility.
Further, the flexible davit strengthens bone comprising metal, and the metal strengthens bone and the rubber, EVA material
Integrated injection molding.
Further, the blower fan has at least three blocked hole.
The above-mentioned denoising device of the present invention is the technical purpose that noise reduction is reached by following technical concept, distinctive
" flexibility parcel " cooperation " flexible suspension ", suspension type is fitted to each other flexible upper and lower covers, effectively prevents the transmission of fan vibration；It is described
Lid and flexible lower cover formation closed cavity is provide the sound insulation environment strengthened in its interior suspension assembling blower fan in flexibility, while soft
Property on lid again for suspension assemble provide flexible support, achieve the technique effect of more preferable vibration damping, above-mentioned suspension and flexible bag
Wrap up in and functionally mutually support, total technique effect after this combination is than individually " flexibility parcel " and individually " flexible
The technique effect sum of suspension " is more superior.
Meanwhile, wind is made an uproar must be while solve to can be only achieved the basic demand of denoising device, above-mentioned technology with blower fan itself vibration
Design devises snakelike air channel on lid also under flexibility, wind is greatly lowered in addition to it can substantially reduce blower fan itself vibration
The transmission made an uproar with fan noise.Snakelike closed airway is formd between flexible lower cover and Fan Box bottom vibration damping sheet, is effectively declined
The wind whistle for subtracting import and preventing fan blade from being produced with windage；Pass through simultaneously via the extraneous gas of snakelike closed airway
Closed cavity top drops to the fan air inlet of blower fan bottom again, produces blower fan when extraneous air passes through closed cavity
Heat takes blower fan gas outlet to, plays a part of cooling for blower fan.
Brief description of the drawings
Fig. 1 is the main sectional view of embodiment of the present invention lung ventilator fan noise reduction device；
Fig. 2 is the snakelike closed channel schematic diagram of embodiment of the present invention lung ventilator fan noise reduction device；
Fig. 3 is Fig. 2 of embodiment of the present invention lung ventilator fan noise reduction device B-B sectional views.
Fig. 4 hangs front view for the flexible davit of embodiment of the present invention lung ventilator fan noise reduction device.
Fig. 5 hangs top view for the flexible davit of embodiment of the present invention lung ventilator fan noise reduction device.
Reference in above-mentioned figure：
In 1 blower fan back box, 2 Fan Box bottom vibration damping sheets, 3 flexible lower covers, the snakelike closing air flues of 3-1,4 blower fan top boxs, 5 flexibilities
Lid, 6 flexible davits, 7 Fan Box top vibration damping sheets, 8 blower fans, 9 connection flexible pipes, 10 switching bend pipes, 11 blower fan gas outlets, 12 blower fans enter
Gas port, 13A air flues hole, F extraneous airs
Embodiment
Following examples are used for illustrating the present invention, but are not limited to the scope of the present invention.
As shown in figure 1, a kind of lung ventilator fan noise reduction device, the blower fan 8 is arranged on blower fan by the denoising device
In back box 1 and the closing space of the formation of blower fan top box 4, the denoising device includes lid 5, Fan Box bottom in flexible lower cover 3, flexibility
Vibration damping sheet 2 and Fan Box top vibration damping sheet 7, Fan Box bottom vibration damping sheet 2 is provided with blower fan back box 1, is provided with blower fan top box 4
Fan Box top vibration damping sheet 7, is provided with the flexible lower cover 3, under Fan Box top vibration damping sheet 7 on Fan Box bottom vibration damping sheet 2
Provided with the flexible upper lid 5, the flexible lower cover 3 and the flexible upper lid 5 cooperatively form the closed cavity for accommodating blower fan 8,
The flexible upper lid 5 is provided with least three suppending hole, each suppending hole provided with flexible davit 6, and the flexible davit 6 includes
Davit body and the flange for the end for being located at davit body, the davit body are provided with buckling groove, and the flexible davit 6 is outstanding by flange
In the suppending hole for hanging over the flexible upper lid 5, there is blocked hole on the blower fan 8, the blower fan by blocked hole with it is described soft
The buckling groove of property davit is fixedly connected.The flexible lower cover 3 and flexible upper lid 5 are made of EVA material.The flexible davit 6
Using rubber, EVA material integrated injection molding, it is preferable that the flexible davit 6 strengthens bone comprising metal, the metal is strengthened
Bone and the rubber, EVA material integrated injection molding.Preferably, the buckling groove of the davit body is thread groove, and the flexibility is hung
Post 6 further comprises flexible fastener nut, and the flexible fastener nut coordinates the fastening blower fan 8 with the buckling groove of davit body.
Preferably, as shown in figure 3, position in order to fix blower fan 8, blower fan has blocked hole described at least three, and can root
Increase is needed according to different, equally, corresponding flexible davit can also increase and reduce.
The technical concept of above-mentioned denoising device is to reach the technology of noise reduction by " flexibility parcel " cooperation " flexible suspension "
Purpose, in Fan Box, the flexible upper lid 5 and the flexible formation of lower cover 3 closed cavity parcel blower fan 8, EVA material damping sound insulation
Effect is good, and above-mentioned denoising device causes blower fan 8 wherein even if there occurs that dither can also inhale by the denoising device immediately
Receive, the conduction of vibration is greatly reduced, so as to reduce the vibration noise of blower fan.In order to further reduce the vibration of blower fan,
Using flexible davit 6 at least three fixed hole positions of blower fan, the property davit 6 is fixed on through flexible upper lid 5 by flange
Its top.Blower fan 8 by flexible davit 6 and flexible upper lid 5 realize suspension it is fixed and meanwhile can damping, greatly reduce due to
Shake the noise produced.
In addition to blower fan is hung and wrapped up, also by the connection provided with one section of about 3cm length at the gas outlet of blower fan
Outside flexible pipe 9, the connection flexible pipe 9 connection switching bend pipe 10, the switching connecting fan gas outlet of bend pipe 10 and Fan Box
Air flue, it is to avoid due to producing noise when blower fan gas outlet collides with outer flue caused by blower fan vibrations, as shown in Figure 1.
In addition to above-mentioned functions, lid 5 and flexible lower cover 3 provide the function of ambient atmos and cooling for blower fan in flexibility.
As shown in Fig. 2 the bottom of flexible lower cover 3 makes full use of the spatial design to have snakelike air channel groove, in flexible lower cover 3 and blower fan after assembling
Snakelike closed airway 3-1 is formd between cassette bottom vibration damping sheet 2, using blower fan as origin, air inlet is located at positive soft in 90 degree of directions
Property lower cover 3 sidewall bottom, the snakelike closing air flue 3-1 is since the air inlet, and first 90 degree direction negative senses are kept straight on 40-60mm
Again along 0 degree of direction forward direct movement 30-40mm again to 90 degree of direction forward direct movement 30-40mm, then along 0 degree of direction forward direct movement 20-
30mm reaches the side wall of the flexible lower cover 3 and not penetrated, then the whole flexibility side wall of lower cover 3 of keeping straight on along 90 degree direction negative senses length
The A stomatas road 13 of the snakelike closing air flue 3-1 ends is upward through after degree and enters the upper of cavity through the flexible lower cover 3
Side, then drop to the fan air inlet 12 of blower fan bottom, the snakelike closed airway 3-1 is at least through two bendings, it is preferable that
The snakelike closed airway 3-1 is smooth curve, at least two convex portions of the smooth curve and a recess, path it is longer and
Tortuous snakelike closed airway 3-1 can effectively decay import and the wind whistle that prevents fan blade from being produced with windage；Separately
On the one hand, extraneous air F enters the snakelike closed airway 3- of flexible lower cover 3 and the formation of Fan Box bottom vibration damping sheet 2 by air inlet
1, as shown in figure 3, then entering back into the top of cavity, then drop to the fan air inlet of blower fan bottom, via blower fan gas outlet
11 blowouts.The heat for producing blower fan when extraneous air F passes through closed cavity takes blower fan gas outlet to, and blower fan is discharged in the lump
Box, plays a part of cooling for blower fan.
The present invention has the design of following inventive technique：" flexibility parcel " cooperation " flexible suspension " reaches the technology of noise reduction
Purpose, effectively prevents the transmission of fan vibration；" flexibility parcel " cooperation " flexible suspension ", suspension type is fitted to each other in flexibility
Lower cover, effectively prevents the transmission of fan vibration；The flexible upper lid 5 and the flexible formation of lower cover 3 closed cavity parcel blower fan 8, shape
Into the sound insulation environment of fan noise, vibrated by the way that flexible davit 6 is fan suspended with reducing itself, above-mentioned suspension and flexible parcel
Functionally mutually support, therefore the flexible upper lid 5 and the flexible formation of lower cover 3 closed cavity are suspension assembling wind in it
Machine provides the sound insulation environment strengthened, while flexible upper lid 5 provides flexible support for suspension assembling again, achieves and preferably subtracts
The technique effect shaken, total technique effect after this combination is imitated than the technology of individually flexible parcel and single flexible suspension
Fruit sum is more superior.
Claims (7)
1. a kind of lung ventilator fan noise reduction device, blower fan (8) is arranged on blower fan back box (1) and blower fan top by the denoising device
In the space of box (4) formation, it is characterised in that the denoising device includes lid (5), Fan Box bottom in flexible lower cover (3), flexibility
Vibration damping sheet (2) and Fan Box top vibration damping sheet (7), Fan Box bottom vibration damping sheet (2) is coated with the inside of blower fan back box (1),
Fan Box top vibration damping sheet (7) is coated with the inside of blower fan top box (4), is coated with Fan Box bottom vibration damping sheet (2) described soft
Property lower cover (3), be coated with Fan Box top vibration damping sheet (7) in the flexibility and cover (5), the flexible lower cover (3) and described soft
Property on lid (5) cooperatively form the closed cavity for accommodating the blower fan (8), it is described flexibility on lid (5) on provided with least three hang
Provided with flexible davit (6) in hole, each suppending hole, the blower fan (8) is suspended on flexible davit (6), under the blower fan (8)
End is with the flexible lower cover (3) separately with hanging；
Blower fan gas outlet (11) place of the blower fan (8) is provided with connection flexible pipe (9), connection flexible pipe (9) the connection switching bend pipe
(10), the air flue outside described switching bend pipe (10) connecting fan box；
The flexible davit (6) includes davit body and is located at the flange of the end of davit body, and the davit body is provided with buckling groove,
The flexible davit (6) is suspended in the flexibility in the suppending hole of lid (5) by flange, has clamping on the blower fan (8)
Hole, the blower fan is fixedly connected by blocked hole with the buckling groove of the flexible davit.
2. a kind of lung ventilator fan noise reduction device according to claim 1, it is characterised in that the flexible lower cover (3)
Bottom design has snakelike air channel groove, and snakelike envelope is formed between the flexible lower cover (3) and Fan Box bottom vibration damping sheet (2) after assembling
Hold one's breath (3-1), using blower fan as origin, and air inlet is located at the sidewall bottom of the positive flexible lower cover (3) in 90 degree of directions, the snake
Shape closed air flue (3-1) is since the air inlet, and first 90 degree of direction negative senses keep straight on 40-60m again along 0 degree of direction forward direct movement 30-
40mm reaches the flexible lower cover (3) again to 90 degree of direction forward direct movement 30-40mm, then along 0 degree of direction forward direct movement 20-30mm
Side wall and do not penetrate, at least through two bendings, then kept straight on whole flexibility lower cover (3) sidewall lengths along 90 degree direction negative senses again
The stomata road (13) of snakelike closing air flue (3-1) end is upward through after degree and enters institute through the flexible lower cover (3)
The top of closed cavity is stated, then drops to the fan air inlet (12) of the blower fan (8) bottom.
3. a kind of lung ventilator fan noise reduction device according to claim 2, it is characterised in that the snakelike closed airway
(3-1) is smooth curve, at least two convex portions of the smooth curve and a recess.
4. a kind of lung ventilator fan noise reduction device according to claim 1, it is characterised in that the buckling groove of the davit body
For thread groove, the flexible davit (6) is further coordinated by the buckling groove of flexible fastener nut and davit body fastens the wind
Machine (8).
5. a kind of lung ventilator fan noise reduction device according to claim 1, it is characterised in that the flexible lower cover (3) and
(5) are covered in flexibility to be made of EVA material.
6. a kind of lung ventilator fan noise reduction device according to claim 1, it is characterised in that the flexible davit (6) is adopted
With rubber, EVA material integrated injection molding, the flexible davit (6) strengthens bone comprising metal, the metal strengthen bone with it is described
Rubber, EVA material integrated injection molding.
7. a kind of lung ventilator fan noise reduction device according to claim 1, it is characterised in that the blower fan (8) has at least 3
Individual blocked hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129126.3A CN104689441B (en) | 2015-03-24 | 2015-03-24 | A kind of lung ventilator fan noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129126.3A CN104689441B (en) | 2015-03-24 | 2015-03-24 | A kind of lung ventilator fan noise reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104689441A CN104689441A (en) | 2015-06-10 |
| CN104689441B true CN104689441B (en) | 2017-07-11 |
Family
ID=53337242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510129126.3A Expired - Fee Related CN104689441B (en) | 2015-03-24 | 2015-03-24 | A kind of lung ventilator fan noise reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104689441B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10806877B2 (en) * | 2015-03-24 | 2020-10-20 | Micomme Medical Technology Development Co., Ltd. | Portable breathing machine |
| CN106139345B (en) * | 2016-07-28 | 2019-06-11 | 湖南明康中锦医疗科技发展有限公司 | A kind of turbine box and ventilator |
| CN112842118A (en) * | 2021-01-19 | 2021-05-28 | 深圳市魔品科技有限公司 | Mute foot drying machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003903139A0 (en) * | 2003-06-20 | 2003-07-03 | Resmed Limited | Breathable gas apparatus with humidifier |
| US20050112013A1 (en) * | 2003-08-04 | 2005-05-26 | Pulmonetic Systems, Inc. | Method and apparatus for reducing noise in a roots-type blower |
| NZ711507A (en) * | 2011-08-05 | 2017-03-31 | Resmed Motor Technologies Inc | Blower |
| CN103736186B (en) * | 2013-12-13 | 2016-01-13 | 科迈（常州）电子有限公司 | A kind of breathing machine pipeline denoising structure |
| CN104132003B (en) * | 2014-07-30 | 2016-08-17 | 邵阳万脉科技有限公司 | A kind of silencing means of positive airway pressure equipment |
| CN204582200U (en) * | 2015-03-24 | 2015-08-26 | 湖南明康中锦医疗科技发展有限公司 | A kind of respirator fan noise reduction device |
-
2015
- 2015-03-24 CN CN201510129126.3A patent/CN104689441B/en not_active Expired - Fee Related
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| CN104689441A (en) | 2015-06-10 |
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