CN108457911A - A kind of lung ventilator and its centrifugal blower fairing - Google Patents
A kind of lung ventilator and its centrifugal blower fairing Download PDFInfo
- Publication number
- CN108457911A CN108457911A CN201710087251.1A CN201710087251A CN108457911A CN 108457911 A CN108457911 A CN 108457911A CN 201710087251 A CN201710087251 A CN 201710087251A CN 108457911 A CN108457911 A CN 108457911A
- Authority
- CN
- China
- Prior art keywords
- fixed ring
- centrifugal blower
- diversion pipe
- fairing
- air outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000004072 lung Anatomy 0.000 title claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000008676 import Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of lung ventilator and its centrifugal blower fairings, including the first fixed ring, the second fixed ring and diversion pipe；The first fixation ring outer surface is connect with one side external surface of diversion pipe；Another side external surface of diversion pipe is connect with the second fixation ring outer surface；First fixed ring is fixed on the inner wall of lower spiral case；Second fixed ring is fixed in the low-pressure side screw position of lower spiral case air outlet；By the cooperation of the first fixed ring and the second fixed ring, diversion pipe is mounted on low-pressure side when centrifugal blower works at air outlet.Diversion pipe is mounted on low-pressure side when centrifugal blower works at air outlet by centrifugal blower fairing provided by the invention by the cooperation of the first fixed ring and the second fixed ring.When blower fan work, diversion pipe imports fraction the inside of diversion pipe, exports to the low-pressure area of centrifugal fan air outlet, to alleviate the air turbulence at centrifugal fan air outlet, reduces noise.
Description
Technical field
The present invention relates to a kind of lung ventilator more particularly to a kind of lung ventilators and its centrifugal blower fairing.
Background technology
The use environment of lung ventilator is typically night, and is placed on close to the position of bedside, therefore noise is lung ventilator
One important indicator, the noise of lung ventilator is lower, be more conducive to user night sleep.Lung ventilator is in the process of running
One of dominant noise source is aerodynamic noise, i.e. the air of the high speed and high pressure noise that duct flows generate inside lung ventilator.Centrifugation
Wind turbine is as where the source of unique power source and aerodynamic noise in lung ventilator.The operation principle of centrifugal blower is to pass through
High-speed rotating blade drives air rotation, the centrifugal force generated using rotation to throw away the air in blade passage, then will be high
Fast high pressure and with rotation status air-flow collect in spiral case, finally from air outlet send out.Due to the effect of inertia, outlet air
Air-flow at mouthful can be biased to the same side of direction of rotation, and the opposite other side then will produce whirlpool or reflux, this is centrifugation
The reason of fan outlet air turbulence.When disorderly air-flow flows through the air duct of lung ventilator, larger aerodynamic noise just will produce.
Therefore, the existing technology needs to be improved and developed.
Invention content
In view of the deficiencies in the prior art, the present invention provides a kind of lung ventilator and its centrifugal blower fairings, it is intended to solve
The certainly noise problem of lung ventilator.
In order to reach above-mentioned technique effect, this invention takes following technical schemes：
A kind of centrifugal blower fairing, wherein including the first fixed ring, the second fixed ring and diversion pipe；Described first
Fixed ring outer surface is connect with one side external surface of diversion pipe；Another side external surface of the diversion pipe and second is fixed ring outer surface and is connected
It connects；First fixed ring is fixed on the inner wall of lower spiral case；Second fixed ring is fixed on the low pressure of lower spiral case air outlet
In the screw position of side；By the cooperation of the first fixed ring and the second fixed ring, diversion pipe is mounted on outlet air when centrifugal blower works
Low-pressure side at mouthful.
The centrifugal blower fairing, wherein the centrifugal blower fairing uses silica gel material, and hardness is
20°-50°。
The centrifugal blower fairing, wherein the shape of first fixed ring is circular ring shape.
The centrifugal blower fairing, wherein the low pressure of the shape of second fixed ring 2 and lower spiral case air outlet
Side screw non-colinear position, thickness 0.1-0.5mm.
The centrifugal blower fairing, wherein the diversion pipe is to wait wall thickness hollow circular tube, wall thickness 0.2-
1.5mm, outer diameter 1-20mm, length 10-100mm.
The centrifugal blower fairing, wherein the diversion pipe has angle of inclination, and it is 0- to tilt down angle
90 °, it is 0-90 ° to be inclined outwardly angle.
It is a kind of breathing and, wherein be provided on lung ventilator such as above-mentioned centrifugal blower fairing.
Beneficial effects of the present invention：A kind of centrifugal blower fairing provided by the invention, can be to the height in centrifugal blower
Fast high pressure draught carries out rectification so that the overall noise of lung ventilator air flue reduces 2dB (A) and (makes an uproar according to YY0671-1 standards
Sound is tested)；The centrifugal blower fairing also has easily die sinking, easy to assembly, the high advantage of reliability.
Description of the drawings
Fig. 1 is the three-dimensional view of centrifugal blower fairing of the present invention；
Fig. 2 is the installation view of centrifugal blower fairing of the present invention；
Fig. 3 is the vertical view of centrifugal blower fairing of the present invention；
Fig. 4 is the front view of centrifugal blower fairing of the present invention；
Fig. 5 is the left view of centrifugal blower fairing of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, referring to the drawings to the present invention make into
One step is described in detail.
Refering to fig. 1, centrifugal blower fairing provided by the invention includes the first fixed ring 1, the second fixed ring 2 and water conservancy diversion
Pipe 3；The first fixation ring outer surface is connect with one side external surface of diversion pipe；Another side external surface of the diversion pipe and second solid
Determine ring outer surface connection.
Referring to Fig.2, first fixed ring solid 1 is scheduled on the inner wall 5 of lower spiral case；Second fixed ring 2 is fixed on down
In the low-pressure side screw position 6 of spiral case air outlet；By the cooperation of the first fixed ring and the second fixed ring, diversion pipe 3 is mounted on
Low-pressure side when centrifugal blower works at air outlet.
Referring to Fig.2, lung ventilator is in normal work, air enters from air inlet, and centrifugal blower passes through high-speed rotating leaf
Piece drives air rotation, the centrifugal force generated using rotation to throw away the air in blade passage, then by high speed and high pressure and band
There is the air-flow of rotation status to collect in spiral case, is finally sent out from air outlet.Due to the effect of inertia, the air-flow meeting at air outlet
It is biased to the same side of direction of rotation, and the opposite other side then will produce whirlpool or reflux, diversion pipe 3 can make centrifugal blower
A part for interior high-speed rotating air-flow enters inside diversion pipe, forces this fraction along diversion pipe by the effect of tube wall
3 inclined direction outflow, this fraction can just supplement the air-flow amesiality because of rotatory inertia rearward left by
Low-pressure area can alleviate the air turbulence at centrifugal fan air outlet, to reduce noise to a certain extent.Preferably, water conservancy diversion
The gradient and length of pipe 3 can be designed according to the flow field of air in centrifugal blower.
Refering to Fig. 3, Fig. 4 and Fig. 5, first fixed ring 1 is circular ring shape, by the elastic force and spiral case of silica gel when assembly
Wall 5 forms close-fitting fixed structure.Preferably, the first fixation ring diameter is more smaller than the inner wall of lower spiral case.Described second fixes
The low-pressure side screw non-colinear position of the shape of ring 2 and lower spiral case air outlet, thickness 0.1-0.5mm.
In conclusion centrifugal blower fairing provided by the invention matching by the first fixed ring and the second fixed ring
It closes, diversion pipe is mounted on low-pressure side when centrifugal blower works at air outlet.When wind turbine works normally, diversion pipe is part
Air-flow import diversion pipe inside, export to the air-flow amesiality because of rotatory inertia rearward left by low-pressure area, one
Determine that the air turbulence at centrifugal fan air outlet can be alleviated in degree, to reduce noise；The centrifugal blower fairing
With easy die sinking, easy to assembly, the high advantage of reliability.
The present invention is described in detail above, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (7)
1. a kind of centrifugal blower fairing, it is characterised in that：Including the first fixed ring, the second fixed ring and diversion pipe；It is described
First fixation ring outer surface is connect with one side external surface of diversion pipe；Another side external surface of the diversion pipe and the second fixed ring appearance
Face connects；First fixed ring is fixed on the inner wall of lower spiral case；Second fixed ring is fixed on lower spiral case air outlet
In low-pressure side screw position；By the cooperation of the first fixed ring and the second fixed ring, when diversion pipe is mounted on centrifugal blower work
Low-pressure side at air outlet.
2. centrifugal blower fairing according to claim 1, it is characterised in that：The centrifugal blower fairing uses
Silica gel material, hardness range are 20 ° to 50 °.
3. centrifugal blower fairing according to claim 1, it is characterised in that：The shape of first fixed ring is circle
Annular.
4. centrifugal blower fairing according to claim 1, it is characterised in that：The shape of second fixed ring is under
The low-pressure side screw non-colinear position of spiral case air outlet, thickness 0.1-0.5mm.
5. centrifugal blower fairing according to claim 1, it is characterised in that：The diversion pipe is to wait the hollow circle of wall thickness
Pipe, wall thickness 0.2-1.5mm, outer diameter 1-20mm, length 10-100mm.
6. centrifugal blower fairing according to claim 1, it is characterised in that：The diversion pipe has angle of inclination,
It is 0-90 ° that it, which tilts down angle, and it is 0-90 ° to be inclined outwardly angle.
7. a kind of lung ventilator, it is characterised in that：Centrifugation wind as claimed in any one of claims 1 to 6 is provided on lung ventilator
Machine fairing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710087251.1A CN108457911B (en) | 2017-02-17 | 2017-02-17 | Breathing machine and centrifugal fan rectifying device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710087251.1A CN108457911B (en) | 2017-02-17 | 2017-02-17 | Breathing machine and centrifugal fan rectifying device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108457911A true CN108457911A (en) | 2018-08-28 |
| CN108457911B CN108457911B (en) | 2024-05-10 |
Family
ID=63228789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710087251.1A Active CN108457911B (en) | 2017-02-17 | 2017-02-17 | Breathing machine and centrifugal fan rectifying device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108457911B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852862A (en) * | 2012-10-09 | 2013-01-02 | 宁波风机有限公司 | Air inlet flow guide device for small centrifugal fan |
| CN203291462U (en) * | 2012-11-12 | 2013-11-20 | 易特联合科技股份有限公司 | Breathing training device |
| US20150184878A1 (en) * | 2013-12-26 | 2015-07-02 | Sunonwealth Electric Machine Industry Co., Ltd. | Air-Guiding Casing of a Ventilation Fan |
| CN104806573A (en) * | 2015-03-26 | 2015-07-29 | 深圳开蓝能源科技有限公司 | Centrifugal water pump energy saving method and centrifugal water pump outlet flow-guiding energy-saving device |
| CN105736480A (en) * | 2016-04-28 | 2016-07-06 | 深圳市大雅医疗技术有限公司 | Small fan, air inlet denoising device thereof and respirator adopting same |
| CN206530550U (en) * | 2017-02-17 | 2017-09-29 | 深圳市大雅医疗技术有限公司 | A kind of lung ventilator and its centrifugal blower fairing |
-
2017
- 2017-02-17 CN CN201710087251.1A patent/CN108457911B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852862A (en) * | 2012-10-09 | 2013-01-02 | 宁波风机有限公司 | Air inlet flow guide device for small centrifugal fan |
| CN203291462U (en) * | 2012-11-12 | 2013-11-20 | 易特联合科技股份有限公司 | Breathing training device |
| US20150184878A1 (en) * | 2013-12-26 | 2015-07-02 | Sunonwealth Electric Machine Industry Co., Ltd. | Air-Guiding Casing of a Ventilation Fan |
| CN104806573A (en) * | 2015-03-26 | 2015-07-29 | 深圳开蓝能源科技有限公司 | Centrifugal water pump energy saving method and centrifugal water pump outlet flow-guiding energy-saving device |
| CN105736480A (en) * | 2016-04-28 | 2016-07-06 | 深圳市大雅医疗技术有限公司 | Small fan, air inlet denoising device thereof and respirator adopting same |
| CN206530550U (en) * | 2017-02-17 | 2017-09-29 | 深圳市大雅医疗技术有限公司 | A kind of lung ventilator and its centrifugal blower fairing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108457911B (en) | 2024-05-10 |
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| GR01 | Patent grant |