CN206903893U - The lung ventilator of Small Centrifugal Fan and the application centrifugal blower - Google Patents
The lung ventilator of Small Centrifugal Fan and the application centrifugal blower Download PDFInfo
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- CN206903893U CN206903893U CN201720295242.7U CN201720295242U CN206903893U CN 206903893 U CN206903893 U CN 206903893U CN 201720295242 U CN201720295242 U CN 201720295242U CN 206903893 U CN206903893 U CN 206903893U
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Abstract
The utility model discloses the lung ventilator of a kind of Small Centrifugal Fan and the application centrifugal blower, the blower fan includes fan blade, upper volute and lower spiral case, positioning hole is provided with the lower spiral case center, installation for motor positions, axis hole is set at the axle center of the fan blade, fan blade is arranged on motor shaft by axis hole, the upper volute assembles with the locking of lower spiral case, it is characterized in that, the air outlet pipe of oriented snail tongue side deflection is set at the snail tongue of the upper volute, the inflection point of air outlet pipe is arranged at snail tongue radius tangent, and deflection angle is 30 ° 90 °.Air turbulence degree at centrifugal fan air outlet can be reduced using the utility model, reduce the noise in air channel inside lung ventilator, make to improve comfort level and usage experience when being not connected to humidification machine using the lung ventilator of the centrifugal blower.
Description
Technical field
It the utility model is related to a kind of lung ventilator, more particularly to a kind of lung ventilator provided with Small Centrifugal Fan.
Background technology
Lung ventilator is a kind of can aid in or instead of the breathing of people, increase pulmonary ventilation volume, the one kind for improving respiratory function
Device, is generally used for lung functions exhaustion or airway obstruction is unable to the patient of eupnea.Existing home ventilator is considered
Portability and aesthetic property, it is intended to minimize, it is less and less to leave the space of blower fan for, and blower fan is offer power in lung ventilator
Part, and most important noise source.
To solve the problems, such as that home ventilator noise is big, our company is on November 4th, 2015 in date of publication, and publication No. is
A kind of small-sized low-noise centrifugal fan is disclosed in CN105020174A application for a patent for invention file and applies the centrifugal blower
Lung ventilator, its middle-size and small-size low-noise centrifugal fan includes fan blade, upper volute and lower spiral case, and fan blade is by the short leaf of multiple circular arcs
The quantity of piece, multiple circular arc linear leafs and lower wall composition, circular arc short blade and circular arc linear leaf is equal, and alternately equal
It is even to be arranged on lower wall.Fan blade is arranged alternately the blade grid passage to be formed using diagonal flow type passage and deviated splitter vane, improves fan blade
Separation whirlpool in runner, reduce the noise of blower fan.
And the factor such as portable is considered in environment relative warmth, the relatively large area of humidity, some lung ventilators user, it can select
The humidification machine (volume almost reduces half) for removing lung ventilator is selected, directly connects breathing machine host with mask conduit to use, by
In having lacked rectified action of the humidification machine water tank to air-flow, it may appear that mask end air turbulence, noise increase, usage experience decline
Situations such as.
The reason for above mentioned problem be present is because the air turbulence of the centrifugal fan air outlet output in lung ventilator.Air-flow with
Centrifugal blower fan blade rotates into diffusion chamber, and then into air outlet, due to the viscous effect of air, air-flow can be inclined to rotate
The same side in direction, air outlet is impacted, and whirlpool low-pressure area is produced in the dorsal part of air outlet, so as to cause the air-flow of air outlet disorderly
Disorderly.When the air-flow of disorder enters mask by pipeline, larger aerodynamic noise will be produced, declines the experience of user.Cause
This, prior art has yet to be improved and developed.
Utility model content
The purpose of this utility model is the lung ventilator for providing a kind of Small Centrifugal Fan and the application centrifugal blower, it is intended to
Solves the problems, such as the air turbulence of the centrifugal fan air outlet output of existing lung ventilator.
The technical solution of the utility model is as follows：
A kind of Small Centrifugal Fan, including fan blade, upper volute and lower spiral case, positioning hole is provided with the lower spiral case center,
Installation for motor positions, and axis hole is set at the axle center of the fan blade, fan blade is arranged on motor shaft by axis hole, described
Upper volute is assembled with the locking of lower spiral case, and the air outlet pipe of oriented snail tongue side deflection is set at the snail tongue of the upper volute, is gone out
The inflection point of tuyere tube is arranged at snail tongue radius tangent, and deflection angle is 30 ° -90 °.
Described Small Centrifugal Fan, it is provided with honeycomb cylinder in the air outlet pipe, and edge goes out inside the honeycomb cylinder
Tuyere tube direction is provided with some circular through holes.
Described Small Centrifugal Fan, the through-hole diameter in its described honeycomb cylinder is 1-10mm, number of openings 1-100
It is individual.
Described Small Centrifugal Fan, its axially disposed two sensor at the air outlet pipe of the upper volute connect
Mouthful, the honeycomb cylinder is placed between two sensor interfaces.
Described Small Centrifugal Fan, a diameter of 20-100mm of its upper volute, be highly 10-70mm, it is described enter
A diameter of 10-50mm in air port, a diameter of 10-60mm of air outlet pipe, the length of air outlet pipe is 10-200mm.
Described Small Centrifugal Fan, the ratio range of the cross-sectional area of its air inlet and air outlet is 0.5-2.
Described Small Centrifugal Fan, its described fan blade are made up of linear leaf, short blade and lower wall, the linear leaf with it is short
Blade alternate is evenly arranged on lower wall, and total leaf number is 4-30 pieces, and linear leaf and short blade are fixedly connected with lower wall.
Described Small Centrifugal Fan, a diameter of 20-80mm of its fan blade, it is highly 5-30mm.
Described Small Centrifugal Fan, the lower wall 14 of its fan blade have 1 ° -20 ° of axially inclined angle.
A kind of lung ventilator, it sets the Small Centrifugal Fan described in just like claim 1-9 any one on lung ventilator.
The beneficial effects of the utility model：The utility model is a kind of applied to the small-sized of continuous positive pressure breathing machine by providing
Centrifugal blower.The centrifugal blower has been adapted to the deflection of air-flow at air outlet, has been reduced air-flow to going out using the air outlet pipe of deflection
The impact in air port and the whirlpool low-pressure area of dorsal part, so that the problem of improving air turbulence at air outlet to a certain extent,
Lung ventilator is set to remove humidification machine in use, the experience at mask end improves, moreover it is possible to reduce the noise in air channel inside lung ventilator.Institute
State and honeycomb cylinder is set in air outlet pipe, air-flow is made air outlet export stable air-flow, entered by the wall action of honeycomb cylinder inner via hole
One step improves the disorderly problem of air-flow at air outlet.In axially disposed two sensor interfaces of air outlet pipe, differential pressure is passed
The air passage portion of sensor and pressure sensor is incorporated into inside centrifugal blower, is so not only saved space, is advantageous to lung ventilator
Miniaturization, and without being molded again to the air passage portion of differential pressure, pressure sensor, reduce manufacturing cost.Air outlet
Deflection the pressure loss of centrifugal blower can't be caused to increase, but because the deflection of air outlet make it that air-flow is more smooth,
The pressure of centrifugal blower can raise under same rotational speed.The centrifugal blower is disorderly by the air-flow at air outlet in the course of the work
Random degree effectively reduces, so that centrifugal blower has, output gas flow is steady, the advantage of low noise, using exhaling for the centrifugal blower
Suction machine, which has, not to be connect humidification machine and can also keep the advantage of mask end comfort level.
Brief description of the drawings
Fig. 1 is the disassembled view for the Small Centrifugal Fan that the utility model is related to.
Fig. 2 is the three-dimensional view of upper volute in the Small Centrifugal Fan that the utility model is related to.
Fig. 3 is the front view of upper volute in the Small Centrifugal Fan that the utility model is related to.
Fig. 4 is the assembling figure for the Small Centrifugal Fan that the utility model is related to.
Fig. 5 is the front view of fan blade in the Small Centrifugal Fan that the utility model is related to.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, clear and definite, develop simultaneously implementation referring to the drawings
The utility model is further described example.
As shown in figure 1, the Small Centrifugal Fan provided by the utility model available for lung ventilator includes fan blade 1, upper volute 2
With lower spiral case 3, positioning hole 5 is provided with the lower center of spiral case 3, the installation for motor positions, at the axle center of the fan blade 1
Axis hole 4 is set, and fan blade 1 is arranged on motor shaft by axis hole 4, and the upper volute 2 is positioned by neck with lower spiral case 3 and passes through spiral shell
Silk locking.
As shown in Figures 2 and 3, the air outlet pipe 8 of deflection is provided with the snail tongue 7 of the upper volute 2, yawing moment leans on
The nearly side of snail tongue 7, the inflection point of air outlet pipe 8 are arranged at the radius tangent of snail tongue 7, and deflection angle is 30 ° -90 °.Due to snail
Tongue 7 serves the effect of separation spiral case internal rotation air-flow, so the air-flow by snail tongue 7 still may proceed to by the effect of viscosity
The direction of rotation is inclined to, therefore, the inflection point of air outlet pipe 8 is arranged at the tangent line of the radius of snail tongue 7, makes air-flow to air outlet
Impact reduce, similarly, the whirlpool low-pressure area of the opposite side relative with snail tongue 7 can also weaken.
As shown in figures 1 and 3, along air outlet pipe inside the interior setting honeycomb cylinder 6 of the air outlet pipe 8, the honeycomb cylinder 6
8 directions are provided with some circular through holes, through-hole diameter 1-10mm, and number of openings is 1-100.In the upper volute 2
Axially disposed two sensor interfaces 9, the honeycomb cylinder 6 are placed between two sensor interfaces 9 at air outlet pipe 8.Honeybee
The effect of nest cylinder 6, first, producing the pressure differential that differential pressure pick-up needs；Second, using the guide functions of several through holes, to going out
Air-flow at air port carries out rectification.
A diameter of 20-100mm of the upper volute 2, it is highly 10-70mm, a diameter of 10- of the air inlet 10
50mm, a diameter of 10-60mm of air outlet pipe 8, the length of air outlet pipe 8 is 10-200mm.As shown in figure 4, the air inlet
10 and the ratio range of the cross-sectional area of air outlet 11 are 0.5-2.
As shown in figure 5, the fan blade 1 is made up of linear leaf 12, short blade 13 and lower wall 14, the linear leaf 12 and short leaf
Piece 13 is alternately evenly arranged on lower wall 14, and total leaf number is that 4-30 pieces, linear leaf 12 and short blade 13 fix company with lower wall 14
Connect.A diameter of 20-80mm of the fan blade 1, it is highly 5-30mm, the lower wall 14 of fan blade 1 has 1 ° -20 ° of axially inclined angle
Degree.
When centrifugal blower works, the fan blade 1 of rotation drives air rotation, under the influence of centrifugal force, the gas of rotation at a high speed
Stream is thrown out of along the runner between linear leaf 12 and short blade 13, the spiral case diffusion entered between upper volute 2 and lower spiral case 3
In chamber, because spiral case diffusion chamber is the circle concentric with fan blade 1, so air-flow is still and fan blade 1 in spiral case diffusion chamber
Rotation direction unanimously rotates.When air-flow reaches snail tongue 7, a part of air-flow is kept apart by snail tongue 7, enters air outlet 11
In, and another part air-flow then continues to rotate in spiral case diffusion intracavitary.Due to the viscous effect of air, air-out is entered
Mouthfuls 11 air-flow is influenceed by spiral case diffusion intracavitary rotary air, can be inclined to the same side of direction of rotation, and the utility model
In the air outlet deflection angle of centrifugal blower then just adapted to the deflection of air-flow at air outlet, reduce air-flow to air outlet
Impact and dorsal part whirlpool low-pressure area.But now air-flow still has certain disorder in air outlet 11, further,
Air-flow is by the through hole in honeycomb cylinder 6, and due to the wall action of some through holes, air-flow is limited to parallel to air outlet 11 by wall
Axial direction, make the more stable air-flow of centrifugal blower final output.In summary, the centrifugal blower that the utility model is related to
The disorderly degree of air-flow at air outlet can be reduced.
According to a kind of Small Centrifugal Fan of above-mentioned offer, the utility model also provides a kind of lung ventilator, by the centrifugation
Blower fan is applied in continuous positive pressure breathing machine.When being not connected to humidification machine, the lung ventilator can improve the comfort level used.
The utility model makes dismounting lung ventilator by providing a kind of Small Centrifugal Fan applied to continuous positive pressure breathing machine
Humidification machine after, the air-flow at ventilator mask end is steady, improves the comfort level used, lifts the usage experience of user.The centrifugation
Blower fan has adapted to the deflection of air-flow at air outlet using the air outlet pipe of deflection, reduce impact of the air-flow to air outlet and
The whirlpool low-pressure area of dorsal part, so as to the problem of improving air turbulence at air outlet to a certain extent, removing lung ventilator
Humidification machine is in use, the experience at mask end improves, moreover it is possible to reduces the noise in air channel inside lung ventilator, is set in the air outlet pipe
Honeycomb cylinder is put, air-flow is made air outlet export stable air-flow, further improve air-out by the wall action of honeycomb cylinder inner via hole
The disorderly problem of air-flow at mouthful.In axially disposed two sensor interfaces of air outlet pipe, by differential pressure pick-up and pressure sensing
The air passage portion of device is incorporated into inside centrifugal blower, so not only saves space, is advantageous to the miniaturization of lung ventilator, Er Qiewu
The air passage portion of differential pressure, pressure sensor need to be molded again, reduce manufacturing cost.The deflection of air outlet can't cause
The pressure loss increase of centrifugal blower, but because the deflection of air outlet make it that air-flow is more smooth, centrifuged under same rotational speed
The pressure of blower fan can raise.The centrifugal blower in the course of the work effectively reduces the air turbulence degree at air outlet,
So that centrifugal blower has, output gas flow is steady, the advantage of low noise, have using the lung ventilator of the centrifugal blower do not connect it is wet
The advantage of mask end comfort level can also be improved by changing device.
It should be appreciated that application of the present utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
Say, can according to the above description be improved or converted, all these modifications and variations should all belong to the appended power of the utility model
The protection domain that profit requires.
Claims (10)
1. a kind of Small Centrifugal Fan, including fan blade (1), upper volute (2) and lower spiral case (3), set at lower spiral case (3) center
There is positioning hole (5), the installation for motor is positioned, and axis hole (4) is set at the axle center of the fan blade (1), and fan blade (1) passes through axle
Hole (4) is arranged on motor shaft, and the upper volute (2) assembles with the locking of lower spiral case (3), it is characterised in that in the upper volute
(2) snail tongue (7) place sets the air outlet pipe (8) of oriented snail tongue (7) side deflection, and the inflection point of air outlet pipe (8) is set
At snail tongue (7) radius tangent, deflection angle is 30 ° -90 °.
2. Small Centrifugal Fan according to claim 1, it is characterised in that be provided with honeybee in the air outlet pipe (8)
Nest cylinder (6), the honeycomb cylinder (6) is internal to be provided with some circular through holes along air outlet pipe (8) direction.
3. Small Centrifugal Fan according to claim 2, it is characterised in that the through-hole diameter in the honeycomb cylinder (6) is
1-10mm, number of openings are 1-100.
4. the Small Centrifugal Fan according to Claims 2 or 3, it is characterised in that in the air outlet pipe of the upper volute (2)
(8) axially disposed two sensor interfaces (9) in place, the honeycomb cylinder (6) are placed between two sensor interfaces (9).
5. Small Centrifugal Fan according to claim 1, it is characterised in that a diameter of 20- of the upper volute (2)
100mm, it is highly 10-70mm, a diameter of 10-50mm of the air inlet (10) on upper volute (2), the diameter of air outlet pipe (8)
For 10-60mm, the length of air outlet pipe (8) is 10-200mm.
6. Small Centrifugal Fan according to claim 5, it is characterised in that the air inlet (10) and air outlet (11)
The ratio range of cross-sectional area is 0.5-2.
7. Small Centrifugal Fan according to claim 1, it is characterised in that the fan blade (1) is by linear leaf (12), short
Blade (13) and lower wall (14) composition, the linear leaf (12) replaces with short blade (13) to be evenly arranged on lower wall (14), always
The number of blade is 4-30 pieces, and linear leaf (12) and short blade (13) are fixedly connected with lower wall (14).
8. Small Centrifugal Fan according to claim 7, it is characterised in that a diameter of 20-80mm of the fan blade (1),
Highly it is 5-30mm.
9. the Small Centrifugal Fan according to claim 7 or 8, it is characterised in that the lower wall (14) of the fan blade (1) has
1 ° -20 ° of axially inclined angle.
10. a kind of lung ventilator, it is characterised in that set on lung ventilator just like small-sized described in claim 1-9 any one
Centrifugal blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295242.7U CN206903893U (en) | 2017-03-24 | 2017-03-24 | The lung ventilator of Small Centrifugal Fan and the application centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295242.7U CN206903893U (en) | 2017-03-24 | 2017-03-24 | The lung ventilator of Small Centrifugal Fan and the application centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206903893U true CN206903893U (en) | 2018-01-19 |
Family
ID=61295531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720295242.7U Active CN206903893U (en) | 2017-03-24 | 2017-03-24 | The lung ventilator of Small Centrifugal Fan and the application centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206903893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626144A (en) * | 2017-03-24 | 2018-10-09 | 深圳市大雅医疗技术有限公司 | The lung ventilator of Small Centrifugal Fan and the application centrifugal blower |
| WO2021129223A1 (en) * | 2019-12-27 | 2021-07-01 | 日本电产科宝电子株式会社 | Blower and ventilator |
-
2017
- 2017-03-24 CN CN201720295242.7U patent/CN206903893U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626144A (en) * | 2017-03-24 | 2018-10-09 | 深圳市大雅医疗技术有限公司 | The lung ventilator of Small Centrifugal Fan and the application centrifugal blower |
| WO2021129223A1 (en) * | 2019-12-27 | 2021-07-01 | 日本电产科宝电子株式会社 | Blower and ventilator |
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