CN206613011U - Amortization cover and breathing machine - Google Patents
Amortization cover and breathing machine Download PDFInfo
- Publication number
- CN206613011U CN206613011U CN201621240217.0U CN201621240217U CN206613011U CN 206613011 U CN206613011 U CN 206613011U CN 201621240217 U CN201621240217 U CN 201621240217U CN 206613011 U CN206613011 U CN 206613011U
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- CN
- China
- Prior art keywords
- air
- air flue
- silencer cover
- blower fan
- air inlet
- Prior art date
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Abstract
The utility model relates to the technical field of medical equipment, especially, relate to a amortization cover and breathing machine. The silencing cover comprises a top cover, a flow guide piece and a bottom cover; the flow guide piece and the bottom cover are arranged inside the top cover; an air flue air inlet is arranged on the top cover; the guide part comprises a plurality of spiral guide vanes which are arranged around the center of the air inlet of the air passage at intervals; a plane spiral air passage is formed among the top cover, the bottom cover and the adjacent guide vanes; the bottom cover is fixedly connected with the top cover through a plurality of guide vanes, and an air passage air outlet is arranged between the bottom cover and the cover wall of the top cover; the ratio of the area of the air inlet of the air passage to the area of the air outlet of the air passage ranges from 1 to 3. The breathing machine comprises the silencing cover. An object of the utility model is to provide a amortization cover and breathing machine to solve the obscure technical problem of effect of making an uproar that falls that current silencing device exists.
Description
Technical field
The utility model is related to technical field of medical instruments, more particularly, to a kind of silencer cover and lung ventilator.
Background technology
Blower fan is widely used in medical field, especially lung ventilator.In current clinical medicine, lung ventilator is used as an energy
The effective means of artificial substituting expiratory positive airway pressure function, has been commonly used to respiratory failure caused by a variety of causes, during major operation
The Breathing Suppotion treatment of anesthesia respiration management, emergency resuscitation and family expenses is medium, occupies particularly significant in Modern Medical Field
Position.Lung ventilator is that one kind can play prevention and treatment respiratory failure, reduces complication, saves and extends patients ' lives
Vital Medical Devices.
Existing blower fan includes being provided with air inlet and air outlet on housing, impeller and motor, housing, and impeller is located at housing
Inside, the output shaft drive connection impeller of motor so that gas along air inlet towards air outlet direction flowing.But it is existing
Blower fan in wheel rotation when, can and surrounding air produce vibrations, so as to generate noise, noise can bring tired to patient
Hot-tempered mood, makes the normal rest of patient, sleep environment be difficult to be guaranteed, is unfavorable for the recovery of patient health.
Existing silencing means can play certain reduction to the noise that the air inlet of blower fan is produced and act on, still, existing
Although the silencing means played the role of can play noise reduction, Noise Reduction is not obvious, by existing silencing means noise reduction
Blower fan, still influence whether rest and the physical recovery of patient.
Therefore, the application provides a kind of new silencer cover and lung ventilator regarding to the issue above.
Utility model content
The purpose of this utility model is to provide a kind of silencer cover, to solve the Noise Reduction that existing silencing means is present
Unconspicuous technical problem.
The purpose of this utility model also resides in a kind of lung ventilator of offer, is filled with the noise reduction for further solving existing lung ventilator
Put the unconspicuous technical problem of Noise Reduction of presence.
The silencer cover provided based on above-mentioned first purpose, the utility model, including overhead guard, conducting element and bottom；
The conducting element and the bottom are arranged on the inside of the overhead guard；
Air flue air inlet is provided with the overhead guard；
The conducting element includes the guide vane of multiple helically wire, and multiple guide vanes are around the air flue air inlet
The center of mouth is arranged at intervals；
Snail air flue is formed between the overhead guard, the bottom and the adjacent guide vane；
The bottom is fixedly connected by multiple guide vanes with the overhead guard, and the bottom and the overhead guard
Air flue gas outlet is provided between cover wall；
The ratio range of the area of the air flue air inlet and the area of the air flue gas outlet is 1-3.
Further, silencer cover described in the utility model, multiple guide vanes are in the air flue air inlet
The heart is uniformly arranged.
Further, snail air flue described in the utility model has 4-10 bars.
Further, snail air flue described in the utility model has 5-8 bars.
Further, one side of the bottom described in the utility model away from the guide vane be provided with multiple length directions with
The vertical support column of the bottom；
The support column is arranged on the inside of the overhead guard.
Further, overhead guard described in the utility model is made up of acoustic material.
The lung ventilator provided based on above-mentioned second purpose, the utility model, including blower fan, the blower fan include impeller, institute
State and air inlet and fan outlet are provided with the body of blower fan, above-mentioned silencer cover is set at the air inlet；
The rotation direction of the snail air flue is identical with the steering of the impeller of the blower fan.
Further, silencer cover described in the utility model and the body snapping.
Further, it is provided with sealing ring between silencer cover described in the utility model and the body.
Further, the material of body described in the utility model is silicon rubber；
The silicon rubber forms air-out passage at the fan outlet.
In summary, during installation, the rotation direction of snail air flue is identical with the steering of the impeller of blower fan to be installed；During work,
During wheel rotation in blower fan, impeller can produce vibrations with the air of surrounding, so as to generate noise, noise can be brought to patient
Irritated mood, makes the normal rest of patient, sleep environment be difficult to be guaranteed, is unfavorable for the recovery of patient health.Existing skill
The silencing means of art can play certain reduction effect to the noise of blower fan, still, on the one hand, the volume of existing silencing means
Greatly, therefore the volume of blower fan is added, it is not readily portable；On the other hand, although existing silencing means can play certain
Noise Reduction, but Noise Reduction is not obvious, by the blower fan of existing silencing means noise reduction, also affects the rest of patient
With physical recovery.
During blower fan work of the present utility model, the wheel rotation of blower fan forms negative pressure at air inlet, and air passes through
The air flue air inlet shunting of silencer cover, enters snail air flue per a air stream after shunting, inlet air is entered from air flue gas outlet
The air inlet of machine, and then enter in blower fan, after the rotation of the identical rotation direction of impeller, discharged from fan outlet, i.e.,：Air
Blower fan is entered back into after silencer cover.On the one hand, air enters back into snail air flue by shunting, reduces air in flowing
Between mutual collision, reduce the generation of noise；On the other hand, silencer cover causes air according to the steering identical with impeller
Rotation direction enters air inlet, so that reduce impeller produces noise with windage；
On the other hand, the small volume of silencer cover, reduces length of flow of the air in snail air flue, so as to reduce
The loss of air energy.
The ratio range of the area of air flue air inlet and the area of air flue gas outlet is 1-3；On the one hand, air flue air inlet
Ratio between area and the area of air flue gas outlet can not be too small, it is too small if, " bottleneck is easily formed at air flue air inlet
Effect ", thus the formation noise at air flue air inlet；On the other hand, the area of air flue air inlet and the area of air flue gas outlet
Between ratio can not be too big, in order to which air-flow is discharged from snail air flue by air flue gas outlet, prevent air in air flue
Accumulated at gas outlet, and occur between air, the collision between air and guide vane, extruding, and produce noise.To sum up, originally
The silencer cover that embodiment is provided is compared with having more preferable noise reduction for prior art, solves disappearing for existing lung ventilator
Mixer exist volume is big and the unconspicuous technical problem of Noise Reduction.
The lung ventilator that the present embodiment is provided, including blower fan, the blower fan include being provided with impeller, the body of the blower fan
Above-mentioned silencer cover is set at air inlet and fan outlet, the air inlet；Further solve existing exhale
The volume that the silencing means of suction machine is present is big and the unconspicuous technical problem of Noise Reduction.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
The dimensional structure diagram of the first state for the silencer cover that Fig. 1 provides for the utility model embodiment；
Dimensional structure diagram (the crown portion of second state of the silencer cover that Fig. 2 provides for the utility model embodiment
Display)；
Dimensional structure diagram (the crown portion of the third state for the silencer cover that Fig. 3 provides for the utility model embodiment
Display)；
The structural representation of the blower fan for the lung ventilator that Fig. 4 provides for the utility model embodiment.
Icon：1- overhead guards；2- bottoms；31- air flues gas outlet；32- air flue air inlets；4- guide vanes；5- snails
Air flue；6- support columns；7- bodies；71- fan outlets.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
The dimensional structure diagram of the first state for the silencer cover that Fig. 1 provides for the utility model embodiment；Fig. 2 is this reality
The dimensional structure diagram of second state of the silencer cover provided with new embodiment (crown portion is shown)；Fig. 3 is this practicality
The dimensional structure diagram of the third state for the silencer cover that new embodiment is provided (crown portion is shown)；Fig. 4 is that this practicality is new
The structural representation of the blower fan for the lung ventilator that type embodiment is provided.
Embodiment one
Referring to shown in Fig. 1-Fig. 4, the present embodiment provides a kind of silencer cover, including overhead guard 1, conducting element and bottom 2；
The conducting element and the bottom 2 are arranged on the inside of the overhead guard 1；
Air flue air inlet 32 is provided with the overhead guard 1；
The conducting element includes the guide vane 4 of multiple helically wire, and multiple guide vanes 4 enter around the air flue
The center of gas port 32 is arranged at intervals；
Snail air flue 5 is formed between the overhead guard 1, the bottom 2 and the adjacent guide vane 4；
The bottom 2 is fixedly connected by multiple guide vanes 4 with the overhead guard 1, and the bottom 2 and the top
Air flue gas outlet 31 is provided between the cover wall of cover 1；
The ratio range of the area of the air flue air inlet 32 and the area of the air flue gas outlet 31 is 1-3.
Preferably, during installation, the rotation direction of snail air flue 5 is identical with the steering of the impeller of blower fan；
During wheel rotation in blower fan, impeller can produce vibrations with the air of surrounding, so as to generate noise, noise can be given
Patient brings the mood of agitation, makes the normal rest of patient, sleep environment be difficult to be guaranteed, is unfavorable for the extensive of patient health
It is multiple.The silencing means of prior art can play certain reduction effect to the noise of blower fan, still, on the one hand, existing noise reduction
The volume of device is big, therefore adds the volume of blower fan, not readily portable；On the other hand, although existing silencing means can
Certain Noise Reduction is played, but Noise Reduction is not obvious, by the blower fan of existing silencing means noise reduction, also affects
The rest of patient and physical recovery.
During the blower fan work of the present embodiment, the wheel rotation of blower fan forms negative pressure, air is by disappearing at air inlet
The air flue air inlet 32 of sound cover is shunted, and is entered snail air flue 5 per a air stream after shunting, is entered from air flue gas outlet 31
The air inlet of blower fan, and then enter in blower fan, after the rotation of the identical rotation direction of impeller, discharged from fan outlet 71, i.e.,：
Air enters back into blower fan after silencer cover.On the one hand, air enters back into snail air flue 5 by shunting, reduces flowing
Mutual collision between middle air, reduces the generation of noise；On the other hand, silencer cover causes air according to the steering with impeller
Identical rotation direction enters air inlet, so that reduce impeller produces noise with windage；
On the other hand, the small volume of silencer cover, reduces length of flow of the air in snail air flue 5, so as to subtract
The small loss of air energy.
Preferably, the ratio range of the area of the air flue air inlet 32 and the area of the air flue gas outlet 31 is 1-3；
For example, the ratio of the area of air flue air inlet 32 and the area of air flue gas outlet 31 can be 1,1.5,1.7,2,2.5,3 etc..
On the one hand, the ratio between the area of air flue air inlet 32 and the area of air flue gas outlet 31 can not be too small, too small
If, " bottleneck effect " easily is formed at air flue air inlet 32, thus the formation noise at air flue air inlet 32；The opposing party
Face, ratio between the area of air flue air inlet 32 and the area of air flue gas outlet 31 can not be too big, in order to which air-flow is from plane
Helical intake 5 is discharged by air flue gas outlet 31, prevents air from being accumulated at air flue gas outlet 31, and occur between air, it is empty
Collision, extruding between gas and guide vane 4, and produce noise.
Table 1 is listed under different motor speeds, using prior art silencing means blower fan apart from blower fan air-out
The noise test value of diverse location at mouth 71
Table 1
| Rotating speed (rev/min) | 10860 | 15060 | 18420 | 21240 |
| Noise (db) at 15cm | 64 | 70 | 72 | 77 |
| Noise (db) at 20cm | 59 | 67 | 69 | 73 |
| Noise (db) at 30cm | 56.3 | 63 | 67 | 70 |
| Noise (db) at 40cm | 56 | 61.4 | 65 | 68 |
Table 2 is listed under different motor speeds, using the present embodiment silencer cover blower fan apart from fan outlet
The noise test value of diverse location at 71
Table 2
| Rotating speed (rev/min) | 10860 | 15060 | 18420 | 21240 |
| Noise (db) at 15cm | 63 | 69 | 71 | 76 |
| Noise (db) at 20cm | 58 | 67 | 70 | 72 |
| Noise (db) at 30cm | 55 | 61.5 | 65 | 70 |
| Noise (db) at 40cm | 54.2 | 61 | 64.3 | 66 |
Data display, the silencer cover that the present embodiment is provided is compared with having more preferable noise reduction, solution for prior art
Determined existing lung ventilator silencing means exist volume is big and the unconspicuous technical problem of Noise Reduction.
Preferably, multiple guide vanes 4 are uniformly arranged around the center of the air flue air inlet 32.Allow air to
Uniformly shunted by silencer cover, further reduce the mutual collision between air in flowing, reduce the generation of noise.
Alternatively, the snail air flue 5 has 4-10 bars.For example, snail air flue 5 have 4,5,6,7
Bar, 8,9,10 etc..
If the bar number of snail air flue 5 is too many, it can make it that the width of every snail air flue 5 is too narrow, guide vane 4
Resistance increase to air-flow, so that power-consuming, power consumption；If the bar number of snail air flue 5 is very little, it can cause to air flow
5 numbers of snail air flue in DeGrain, this number range can make air-flow more smoothly enter air flue air inlet 32,
And more smoothly flowed in snail air flue 5.
Preferably, the snail air flue 5 has 5-8 bars, for example, snail air flue 5 has 5,6,7,8
Deng.Further to prevent the width of every snail air flue 5 too narrow, guide vane 4 increases the resistance of air-flow, it is to avoid so that
To the DeGrain of air flow, so as to further make air-flow more smoothly enter air flue air inlet 32, and more put down
Steady flows in snail air flue 5.
Preferably, one side of the bottom 2 away from the guide vane 4 is provided with multiple length directions and the bottom 2
Vertical support column 6；
The support column 6 is arranged on the inside of the overhead guard 1.
Support column 6 plays support, buffer action so that airflow space is formed between silencer cover and blower fan, prevents the later stage will
When silencer cover and blower fan assembling, bottom 2 is directly contacted with blower fan, and make it that the air in silencer cover is blocked and can not flowed out, shadow
Ring the normal work of blower fan.
Preferably, the overhead guard is made up of acoustic material.It reduce further when air flows through snail air flue 5 and produce
Noise；Alternatively, acoustic material for example can be PC (makrolon), PP (polypropylene), PE (polyethylene), ABS (propylene
Nitrile-BS) etc..
Embodiment two
Embodiment two provides a kind of lung ventilator, and the lung ventilator includes the silencer cover described in embodiment one, embodiment one
The technical characteristic of disclosed silencer cover is also applied for the embodiment, and the technical characteristic of the published silencer cover of embodiment one is no longer
Repeated description.The embodiment to the lung ventilator is described in further detail below in conjunction with the accompanying drawings.
To save length, the improvement feature of the embodiment is equally embodied in Figs. 1-4, therefore, with reference to Fig. 1-Fig. 4 to this
The scheme of embodiment is illustrated.
Referring to shown in Fig. 1-Fig. 4, the lung ventilator that the present embodiment is provided, including blower fan, the blower fan includes impeller, the wind
The above-mentioned silencer cover of setting at air inlet and fan outlet 71, the air inlet is provided with the body 7 of machine；
The rotation direction of the snail air flue 5 is identical with the steering of the impeller of the blower fan.
That is, during the blower fan work of lung ventilator, air is shunted by the air flue air inlet 32 of silencer cover, after shunting
Enter snail air flue 5 per portion air stream, the air inlet of blower fan is entered from air flue gas outlet 31, and then enter blower fan
It is interior, after the rotation of the identical rotation direction of impeller, discharged from fan outlet 71, i.e.,：Air enters back into blower fan, one after silencer cover
Aspect, air enters back into snail air flue 5 by shunting, reduces the mutual collision between air in flowing, reduces and make an uproar
The generation of sound；On the other hand, enter after air flow so that air enters according to the steering identical rotation direction with impeller into blower fan
Air port, so that reduce impeller produces noise with windage, further solves the silencing means presence of existing lung ventilator
Volume is big and the unconspicuous technical problem of Noise Reduction.
Preferably, the silencer cover and the snapping of body 7.For example, away from snail air flue 5 on the bottom plate of silencer cover
One side be provided with projection, blower fan and be provided with corresponding groove；Or, away from snail air flue 5 on the bottom plate of silencer cover
One side set it is fluted, corresponding projection is provided with blower fan.
It should be noted that only listing the embodiment of two kinds of snappings herein, the structure of snapping can be realized not
It is limited to above two specific implementation, it is any to realize the structure of above-mentioned functions.
Preferably, sealing ring (not shown) is provided between the silencer cover and the body 7, so as to strengthen noise reduction
The sealing effectiveness of cover and blower fan, prevents air from being discharged by the gap leakage between silencer cover and blower fan, and produces vibration with making an uproar
Sound.
Preferably, the material of the body 7 is silicon rubber；
The silicon rubber forms air-out passage at the fan outlet 71.
The soft texture of silicon rubber, can reduce the noise that blower fan vibrations are produced, and silicon rubber is at fan outlet 71
The air-out passage of an extension is formed, strengthens the buffering to air-flow, the noise of air outlet is reduced.
Lung ventilator described in the present embodiment has the advantages that silencer cover described in embodiment one, and the advantage is in embodiment one
Describe in detail, be not repeated herein.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. a kind of silencer cover, it is characterised in that including overhead guard, conducting element and bottom；
The conducting element and the bottom are arranged on the inside of the overhead guard；
Air flue air inlet is provided with the overhead guard；
The conducting element includes the guide vane of multiple helically wire, and multiple guide vanes are around the air flue air inlet
Center is arranged at intervals；
Snail air flue is formed between the overhead guard, the bottom and the adjacent guide vane；
The bottom is fixedly connected by multiple guide vanes with the overhead guard, and the cover wall of the bottom and the overhead guard
Between be provided with air flue gas outlet；
The ratio range of the area of the air flue air inlet and the area of the air flue gas outlet is 1-3.
2. silencer cover according to claim 1, it is characterised in that multiple guide vanes are around the air flue air inlet
Center is uniformly arranged.
3. silencer cover according to claim 1, it is characterised in that the snail air flue has 4-10 bars.
4. silencer cover according to claim 3, it is characterised in that the snail air flue has 5-8 bars.
5. silencer cover according to claim 1, it is characterised in that one side of the bottom away from the guide vane is set
There is multiple length directions support column vertical with the bottom；
The support column is arranged on the inside of the overhead guard.
6. silencer cover according to claim 1, it is characterised in that the overhead guard is made up of acoustic material.
7. a kind of lung ventilator, including blower fan, the blower fan include being provided with impeller, the body of the blower fan air inlet and
Fan outlet, it is characterised in that the silencer cover as described in claim any one of 1-6 is set at the air inlet；
The rotation direction of the snail air flue is identical with the steering of the impeller of the blower fan.
8. lung ventilator according to claim 7, it is characterised in that the silencer cover and the body snapping.
9. lung ventilator according to claim 8, it is characterised in that sealing is provided between the silencer cover and the body
Circle.
10. lung ventilator according to claim 7, it is characterised in that the material of the body is silicon rubber；
The silicon rubber forms air-out passage at the fan outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621240217.0U CN206613011U (en) | 2016-11-18 | 2016-11-18 | Amortization cover and breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621240217.0U CN206613011U (en) | 2016-11-18 | 2016-11-18 | Amortization cover and breathing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206613011U true CN206613011U (en) | 2017-11-07 |
Family
ID=60228856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621240217.0U Expired - Fee Related CN206613011U (en) | 2016-11-18 | 2016-11-18 | Amortization cover and breathing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206613011U (en) |
-
2016
- 2016-11-18 CN CN201621240217.0U patent/CN206613011U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171107 Termination date: 20191118 |