CN110302457A - Check valve, ventilator and intranasal high flow capacity oxygen therapy device - Google Patents
Check valve, ventilator and intranasal high flow capacity oxygen therapy device Download PDFInfo
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- CN110302457A CN110302457A CN201910614344.4A CN201910614344A CN110302457A CN 110302457 A CN110302457 A CN 110302457A CN 201910614344 A CN201910614344 A CN 201910614344A CN 110302457 A CN110302457 A CN 110302457A
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- Prior art keywords
- spool
- check valve
- movable part
- free end
- groove
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Emergency Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Check Valves (AREA)
Abstract
It include: bracket and flexible membrane the invention discloses a kind of check valve, ventilator and intranasal high flow capacity oxygen therapy device, check valve.Bracket includes connected valve seat and spool, the channel suitable for air-flow flowing is limited between valve seat and spool, channel has airflow inlet and air stream outlet, the circumferentially extending groove along spool is formed on the periphery wall of spool, flexible membrane is set on bracket, and flexible membrane includes connected fixed part and movable part, and fixed part is set on valve seat, movable part is movably set on spool to open and close air stream outlet, and the free end of movable part is adapted to fit in groove.Check valve according to an embodiment of the present invention can avoid in the downside interference in air flow of low-pressure air-flow or blow afloat the free end of flexible membrane, to more reliably realize the unidirectional non-return effect of check valve.
Description
Technical field
The present invention relates to valving fields, fill more particularly, to a kind of check valve, ventilator and intranasal high flow capacity oxygen therapy
It sets.
Background technique
Check valve realizes unidirectional non-return effect in pipeline, such as cures in intranasal high flow capacity oxygen therapy device, ventilator etc.
It treats in instrument, usually has two gas circuits of air and oxygen, two kinds of gases are flowed out from respective gas circuit respectively by a certain percentage, final to converge
The gaseous mixture for being combined into certain oxygen concentration is used to patient.It before mixing can be in gas circuit for the precise proportions for guaranteeing mixed gas
Middle setting check valve, to prevent gas backstreaming from collaborating.However, check valve in the related technology can be in the air-flow of elevated pressures
Realize unidirectional non-return effect, but can there is a phenomenon where leak under certain low-pressure air-flow environment.Therefore, it is cut from unidirectional
The only angle of air-flow, check valve non-return effect in the related technology are unsatisfactory.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of list
To valve, which can more reliably realize unidirectional non-return effect.
The invention also provides a kind of ventilators with above-mentioned check valve.
The invention also provides a kind of intranasal high flow capacity oxygen therapy device with above-mentioned check valve.
A kind of check valve of embodiment according to a first aspect of the present invention, comprising: bracket, the bracket include connected valve seat
And spool, limited between the valve seat and the spool suitable for air-flow flowing channel, the channel have airflow inlet and
Air stream outlet is formed with the circumferentially extending groove along the spool on the periphery wall of the spool；Flexible membrane, the flexibility
Diaphragm is arranged on the bracket, and the flexible membrane includes connected fixed part and movable part, and the fixed part is set in institute
It states on valve seat, the movable part is movably set on the spool to open and close the air stream outlet, the activity
The free end in portion is adapted for engagement in the groove.
Check valve according to an embodiment of the present invention, the free end by the way that groove and movable part are arranged on spool are adapted for engagement with
In the groove, the movable part of flexible membrane in reversed stress or when not stressing, the free end of movable part cooperate in groove and
The free end of movable part can be made to be bonded or be in close contact with the side wall of groove, thus can avoid in low-pressure air-flow downside
Interference in air flow or the free end for blowing afloat flexible membrane, to more reliably realize the unidirectional non-return effect of check valve.
According to some embodiments of the present invention, the groove includes the first side wall along the circumferentially extending of the spool,
By on the central axis to the direction of the periphery wall of the spool of the spool, the first side wall towards the neighbouring air-flow into
The direction of mouth, which tilts, to be extended.
Some alternative embodiments according to the present invention, when the free end of the movable part cooperates in the groove, institute
Movable part is stated to be bonded with the first side wall.
Some alternative embodiments according to the present invention, in the periphery wall of the central axis by the spool to the spool
On direction, the direction of the movable part towards the neighbouring airflow inlet, which tilts, to be extended.
Some alternative embodiments according to the present invention, the angle between the first side wall and the central axis of the spool
Meet for α, the α: 45 °≤α≤60 °.
Some alternative embodiments according to the present invention, the groove include second side along the circumferentially extending of the spool
Wall, the second sidewall is oppositely arranged with the first side wall on the axial direction of the spool.
Optionally, on the direction of the periphery wall of the central axis by the spool to the spool, the second sidewall
It tilts and extends towards the direction of the neighbouring air stream outlet.
Further, the angle between the second sidewall and the central axis of the spool is β, and the β meets: 30 °
≤β≤45°。
Optionally, when the free end of the movable part cooperates in the groove, the free end of the movable part and institute
Stating has gap between second sidewall.
Optionally, the second sidewall smoothly transits with the periphery wall of the spool and connect.
According to some embodiments of the present invention, on one in the internal perisporium of the periphery wall of the valve seat and the fixed part
It is formed with locating slot, is formed with and the locating slot on one in the internal perisporium of the periphery wall of the valve seat and the fixed part
The positioning protrusion of cooperation.
According to some embodiments of the present invention, the air stream outlet includes along the circumferentially spaced multiple of the spool
Sub-stream nozzle outlet, the movable part are circumferentially spaced setting of multiple and multiple movable parts along the spool, the work
The quantity in dynamic portion is identical as the quantity that the sub-stream nozzle exports and corresponds, and each movable part opens and closes corresponding
The sub-stream nozzle outlet.
The ventilator of embodiment according to a second aspect of the present invention, comprising: above-mentioned first aspect embodiment according to the present invention
Check valve.
Ventilator according to an embodiment of the present invention can be realized more reliably unidirectional by the way that above-mentioned check valve is arranged
The unidirectional non-return effect of valve, improves the functional reliability of check valve, so as to improve the functional reliability of ventilator.
The intranasal high flow capacity oxygen therapy device of embodiment according to a third aspect of the present invention, comprising: according to the present invention above-mentioned first
The check valve of aspect embodiment.
Intranasal high flow capacity oxygen therapy device according to an embodiment of the present invention can more may be used by the way that above-mentioned check valve is arranged
The unidirectional non-return effect that check valve is realized by ground, improves the functional reliability of check valve, so as to improve intranasal high flow capacity oxygen
Treat the functional reliability of device.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the perspective view of check valve according to an embodiment of the present invention；
Fig. 2 is the main view of check valve according to an embodiment of the present invention；
Fig. 3 is the cross-sectional view of the line C-C along Fig. 2；
Fig. 4 is the partial enlarged view in Fig. 3 at D.
Appended drawing reference:
Check valve 100；
Bracket 1；Valve seat 11；Positioning protrusion 111；Spool 12；Groove 121；The first side wall 1211；Second sidewall 1212；
Flexible membrane 2；Fixed part 21；Locating slot 211；Movable part 22；Free end 221；
Channel 3；Airflow inlet 31；Air stream outlet 32；Sub-stream nozzle outlet 321.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
Check valve 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Fig. 4.The check valve 100 can be used for curing
It treats in equipment.
With reference to Fig. 1-Fig. 4, the check valve 100 of embodiment according to a first aspect of the present invention, comprising: bracket 1 and flexible membrane
2, flexible membrane 2 is set on bracket 1, and bracket 1 plays a supportive role to flexible membrane 2, and bracket 1 includes connected valve seat 11 and valve
Core 12, limits the channel 3 suitable for air-flow flowing between valve seat 11 and spool 12, channel 3 has the gentle outflow of airflow inlet 31
Mouthfuls 32, the circumferentially extending groove 121 along spool 12 is formed on the periphery wall of spool 12.
Flexible membrane 2 has elastic deformability, and flexible membrane 2 includes connected fixed part 21 and movable part 22, fixes
Portion 21 can be cylindrical, and fixed part 21 is set on valve seat 11, and movable part 22 is movably set on spool 12 to open
With closed gas flow outlet 32, the free end 221 of movable part 22 is adapted to fit in groove 121.
Check valve 100 is flowed to along positive (forward direction refers to the direction from airflow inlet 31 to air stream outlet 32) in air-flow
When, air-flow enters in channel 3 from airflow inlet 31, and positive draft is directed away from air-flow to the application of movable part 22 of flexible membrane 2
The pressure in 31 direction of import, the direction for pushing the movable part 22 of flexible membrane 2 to be directed away from airflow inlet 31 is mobile, movable part 22
Free end 221 be detached from spool on groove 121,2 stress of flexible membrane open, at this time flexible membrane 2 movable part 22 open
Air stream outlet 32 is flowed out into the air-flow in channel 3 from air stream outlet 32, and air-flow can pass through, and realizes check valve 100
One-way conduction function.
Check valve 100 is flowed to along reversed (direction reversely referred to from air stream outlet 32 to airflow inlet 31) in air-flow
When, air-flow applies the pressure towards neighbouring 32 direction of airflow inlet to the movable part 22 of flexible membrane 2, pushes flexible membrane 2
The direction of movable part 22 towards neighbouring airflow inlet 32 is mobile, and the free end 221 of movable part 22 is engaged to the groove on spool 12
In 121,22 closed gas flow of the movable part outlet 32 of flexible membrane 2 at this time, the free end 221 of movable part 22 can be close to groove
121 side wall, air-flow can not pass through, and play sealing effect, realize the unidirectional inverse-stopping functions of check valve 100.
Also, even if in low-pressure air current (referring to Fig. 4, the arrow direction in Fig. 4 is air current flow direction), due to
The free end 221 of movable part 22 and the groove 121 of spool cooperate, and what air-flow directly contacted when coming from side is spool 12, gas
Air-flow can change direction after stream encounters the wall surface of spool 12, it is ensured that the free end 221 of movable part 22 will not be because of by side
Bian Li and deform, interfere or blow afloat the free end 221 of flexible membrane 2 so as to avoid side airflow, be effectively improved gas leakage
Problem, to more reliably realize the unidirectional non-return effect of check valve 100.
When flexible membrane 2 does not stress, with reference to Fig. 3 and Fig. 4, since the free end 221 of movable part 22 is engaged to spool 12
On groove 121 in, 22 closed gas flow of the movable part outlet 32 of flexible membrane 2, can prevent airflow reflux at this time, realize unidirectional
The unidirectional inverse-stopping functions of valve 100.
Check valve 100 according to an embodiment of the present invention, by the freedom that groove 121 and movable part 22 are arranged on spool 12
End 221 is adapted to fit in the groove 121, the movable part 22 of flexible membrane 2 in reversed stress or when not stressing, movable part 22
Free end 221 cooperation in groove 121 and can make the free end 221 of movable part 22 be bonded with the side wall of groove 121 or tightly
Contiguity touching, thus can avoid in the downside interference in air flow of low-pressure air-flow or blows afloat the free end 221 of flexible membrane 2, thus more
Add the unidirectional non-return effect for being reliably achieved check valve 100.
According to some embodiments of the present invention, as shown in Figure 3 and Figure 4, groove 121 includes the circumferentially extending along spool 12
The first side wall 1211, on the direction of the periphery wall of the central axis by spool 12 to spool 12, the first side wall 1211 is towards neighbour
The direction of nearly airflow inlet 31, which tilts, to be extended.As a result, when the cooperation of the free end of movable part 22 221 is in groove 121, pass through work
The cooperation of the first side wall 1211 of the free end 221 and groove 121 in dynamic portion 22, when air-flow is along reverse flow, the of groove 121
One side wall 1211 can play the backstop action to the free end 221 of movable part 22, prevent the free end 221 of movable part 22 from recessed
It is detached from slot 121, guarantees leakproofness, realize the unidirectional non-return effect of check valve 100.Also, by making the first side wall 1211
It tilts and extends towards the direction of neighbouring airflow inlet 31, in the case where the depth of groove 121 is certain, the first side wall can be increased
1211 area, so as to further improve leakproofness.
Some alternative embodiments according to the present invention, as shown in Figure 3 and Figure 4, in the free end of movable part 22 221, cooperation exists
When in groove 121, movable part 22 is bonded with the first side wall 1211, when air-flow edge is reverse flowed to check valve 100, can to live
Dynamic portion 22 is even closer is fitted on the first side wall 1211, it is possible thereby to further improve leakproofness, is better protected from leakage
Generation, be more advantageous to realize check valve 100 unidirectional inverse-stopping functions.
Some alternative embodiments according to the present invention, as shown in Figure 3 and Figure 4, in the central axis by spool 12 to spool
On the direction of 12 periphery wall, movable part 22 is tilted towards the direction of neighbouring airflow inlet 32 to be extended, such as movable part 22 can be with
Be formed as cone-shaped.Thus, it is possible to increase the contact area of movable part 22 Yu the first side wall 1211, list is reverse flowed on air-flow edge
When to valve 100, is conducive to air-flow and the free end 221 of movable part 22 is pressed on the first side wall 1211, be more advantageous to reliably
Realize the unidirectional inverse-stopping functions of check valve 100.
Some alternative embodiments according to the present invention, as shown in Figure 3 and Figure 4, the center of the first side wall 1211 and spool 12
Angle between axis is α, and α meets: 45 °≤α≤60 °.Both movable part 22 can be made to have with the first side wall 1211 as a result,
Biggish contact area, and when air-flow edge is reverse flowed to check valve 100, air-flow (is for the vertical stress component of movable part 22
Refer to air-flow for component of the pressure on the direction perpendicular to movable part 22 of movable part 22) it is larger, being more advantageous to air-flow will live
The free end 221 in dynamic portion 22 is pressed on the first side wall 1211, and sealing effect is more preferable.
Some alternative embodiments according to the present invention, such as Fig. 3 and Fig. 4, groove 121 includes the circumferentially extending along spool 12
Second sidewall 1212, second sidewall 1212 is oppositely arranged with the first side wall 1212 on the axial direction of spool 12.Pass through as a result,
The above-mentioned second sidewall 1212 being arranged, when air-flow edge is reverse flowed to check valve 100, (referring to Fig. 4, the arrow direction in Fig. 4 is
Air current flow direction), second sidewall 1212 can play the barrier effect to air-flow, avoid back draught from side inflow activity
The bottom of the free end 221 in portion 22 and the free end 221 in interfering activity portion 22, to prevent 221 quilt of free end of movable part 22
It blows afloat and leaks, further guarantee sealing effect, to further improve the unidirectional non-return reliable of check valve 100
Property.
Optionally, as shown in Figure 3 and Figure 4, on the direction of the periphery wall of the central axis by spool 12 to spool 12, the
The direction of two side walls 1212 towards neighbouring air stream outlet 31, which tilts, to be extended.As a result, when air-flow edge is reverse flowed to check valve 100,
Second sidewall 1212 can stop the free end in the bottom of the free end 221 of air flow direction movable part 22 and interfering activity portion 22
221, and when air-flow is along forward flow, so that the free end 221 of movable part 22 is easy to be detached from the groove 121 of spool 12, have
Conducive to 100 one-way conduction of check valve and non-return function is better achieved.
Further, as shown in Figure 3 and Figure 4, the angle between second sidewall 1212 and the central axis of spool 12 is β,
The β meets: 30 °≤β≤45 °.As a result, by setting the angle β between second sidewall 1212 and the central axis of spool 12
It sets within the above range, when air-flow edge is reverse flowed to check valve 100, second sidewall 1212 can preferably stop air flow direction
The bottom of the free end 221 of movable part 22 and the free end 221 in interfering activity portion 22, and when air-flow is along forward flow, make
The free end 221 for obtaining movable part 22 is easier to be detached from the groove 121 of spool 12, is conducive to be better achieved check valve 100 unidirectionally
Conducting and non-return function.
Optionally, the first side wall 1211 of groove 121 and second sidewall 1212 can be vertically arranged, so that groove
121 shape is adapted with the shape of the free end 221 of movable part 22, plays preferably sealing effect.For example, the first side wall
Angle α between 1211 and the central axis of spool 12 is 45 °, the folder between second sidewall 1212 and the central axis of spool 12
Angle beta is 45 °.
Optionally, as shown in Figure 3 and Figure 4, when the cooperation of the free end of movable part 22 221 is in groove 121, movable part 22
Free end 221 and second sidewall 1212 between have gap.As a result, when air-flow flows to check valve 100 along forward direction, due to work
There is gap between the free end 221 and second sidewall 1212 in dynamic portion 22, so that the free end 221 of movable part 22 is easier to
It is detached from the groove 121 of spool 12, to be more easily implemented the opening of air stream outlet 32.
Optionally, as shown in Figure 3 and Figure 4, second sidewall 1212 smoothly transits with the periphery wall of spool 12 and connect.As a result,
The free end 221 that movable part 22 can be reduced is detached from the resistance of groove 121, and can reduce the free end 221 of movable part 22
Abrasion.
According to some embodiments of the present invention, as shown in figure 3, in the internal perisporium of the periphery wall of valve seat 11 and fixed part 21
It is formed with locating slot 211 on one, locating slot 211 can be formed as annular circumferentially, the periphery wall of valve seat 11 and solid
Determine to be formed with the positioning protrusion 111 cooperated with locating slot 211 on one in the internal perisporium in portion 21, positioning protrusion 111 can be with shape
As annular circumferentially.For example, when being formed with locating slot 211 on the periphery wall of valve seat 11, the inner circumferential of fixed part 21
Positioning protrusion 111 is formed on wall；When being formed with positioning protrusion 111 on the periphery wall of valve seat 11, the internal perisporium of fixed part 21
On be formed with locating slot 211.The cooperation for passing through positioning protrusion 111 and locating slot 211 as a result, can be by the fixation of flexible membrane 2
Portion 22 is fixed on valve seat 11, prevents fixed part 22 from moving.
According to some embodiments of the present invention, as Figure 1-Figure 4, air stream outlet 32 includes along the circumferentially-spaced of spool 12
Multiple (such as two) sub-stream nozzles outlet 321 being arranged, movable part 22 are circumferential direction of multiple and multiple movable parts 22 along spool 12
It is spaced apart setting, the quantity of movable part 22 is identical as the quantity of sub-stream nozzle outlet 321 and corresponds, and each movable part 22 is opened
321 are exported with corresponding sub-stream nozzle is closed.Thus, it is possible to the flexibility of each movable part 22 be further improved, so that air-flow goes out
The opening and closing operation of mouth 32 is more smoothly.
The ventilator of embodiment according to a second aspect of the present invention, comprising: above-mentioned first aspect embodiment according to the present invention
Check valve 100.
Ventilator according to an embodiment of the present invention can more reliably realize list by the way that above-mentioned check valve 100 is arranged
It is acted on to 100 one-way reverse-blocking of valve, the functional reliability of check valve 100 is improved, so as to improve the functional reliability of ventilator.
The intranasal high flow capacity oxygen therapy device of embodiment according to a third aspect of the present invention, comprising: according to the present invention above-mentioned first
The check valve 100 of aspect embodiment.
Intranasal high flow capacity oxygen therapy device according to an embodiment of the present invention can be more by the way that above-mentioned check valve 100 is arranged
It is reliably achieved the unidirectional non-return effect of check valve 100, the functional reliability of check valve 100 is improved, so as to improve intranasal
The functional reliability of high flow capacity oxygen therapy device.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (14)
1. a kind of check valve characterized by comprising
Bracket, the bracket include connected valve seat and spool, are limited between the valve seat and the spool suitable for air-flow stream
Dynamic channel, the channel have airflow inlet and air stream outlet, are formed on the periphery wall of the spool along the spool
Circumferentially extending groove；
Flexible membrane, the flexible membrane are arranged on the bracket, and the flexible membrane includes connected fixed part and activity
Portion, the fixed part are set on the valve seat, and the movable part is movably set on the spool to open and close
The free end of the air stream outlet, the movable part is adapted for engagement in the groove.
2. check valve according to claim 1, which is characterized in that the groove includes the circumferentially extending along the spool
The first side wall, on the direction of the periphery wall of the central axis by the spool to the spool, the first side wall direction is adjacent
The direction of the nearly airflow inlet, which tilts, to be extended.
3. check valve according to claim 2, which is characterized in that cooperate in the free end of the movable part in the groove
When interior, the movable part is bonded with the first side wall.
4. check valve according to claim 2, which is characterized in that in the central axis by the spool to the spool
On the direction of periphery wall, the direction of the movable part towards the neighbouring airflow inlet, which tilts, to be extended.
5. check valve according to claim 2, which is characterized in that the central axis of the first side wall and the spool it
Between angle be α, the α meets: 45 °≤α≤60 °.
6. check valve according to claim 2, which is characterized in that the groove includes the circumferentially extending along the spool
Second sidewall, the second sidewall is oppositely arranged with the first side wall on the axial direction of the spool.
7. check valve according to claim 6, which is characterized in that in the central axis by the spool to the spool
On the direction of periphery wall, the direction of the second sidewall towards the neighbouring air stream outlet, which tilts, to be extended.
8. check valve according to claim 7, which is characterized in that the central axis of the second sidewall and the spool it
Between angle be β, the β meets: 30 °≤β≤45 °.
9. check valve according to claim 6, which is characterized in that cooperate in the free end of the movable part in the groove
When interior, there is gap between the free end of the movable part and the second sidewall.
10. check valve according to claim 6, which is characterized in that the periphery wall light of the second sidewall and the spool
It slips over and crosses connection.
11. check valve according to claim 1, which is characterized in that the periphery wall of the valve seat and the fixed part it is interior
It is formed with locating slot on one in peripheral wall, shape on another in the internal perisporium of the periphery wall of the valve seat and the fixed part
The positioning protrusion of the cooperation of locating slot described in Cheng Youyu.
12. check valve described in any one of -11 according to claim 1, which is characterized in that the air stream outlet includes along described
Circumferentially spaced multiple sub-stream nozzle outlets of spool, the movable part is multiple and multiple movable parts along the spool
Circumferentially spaced setting, the quantity of the movable part it is identical as the quantity that the sub-stream nozzle exports and correspond, Mei Gesuo
It states movable part and opens and closes the corresponding sub-stream nozzle outlet.
13. a kind of ventilator characterized by comprising check valve described in any one of -12 according to claim 1.
14. a kind of intranasal high flow capacity oxygen therapy device characterized by comprising according to claim 1 described in any one of -12
Check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614344.4A CN110302457B (en) | 2019-07-09 | 2019-07-09 | One-way valve, breathing machine and intranasal high-flow oxygen therapy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614344.4A CN110302457B (en) | 2019-07-09 | 2019-07-09 | One-way valve, breathing machine and intranasal high-flow oxygen therapy device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110302457A true CN110302457A (en) | 2019-10-08 |
| CN110302457B CN110302457B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910614344.4A Active CN110302457B (en) | 2019-07-09 | 2019-07-09 | One-way valve, breathing machine and intranasal high-flow oxygen therapy device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111529869A (en) * | 2020-05-29 | 2020-08-14 | 重庆医科大学附属儿童医院 | Loop type anesthesia ventilation system |
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| CN110302457B (en) | 2022-05-17 |
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