CN204840566U - Empty oxygen mixing arrangement of breathing machine - Google Patents
Empty oxygen mixing arrangement of breathing machine Download PDFInfo
- Publication number
- CN204840566U CN204840566U CN201520513881.7U CN201520513881U CN204840566U CN 204840566 U CN204840566 U CN 204840566U CN 201520513881 U CN201520513881 U CN 201520513881U CN 204840566 U CN204840566 U CN 204840566U
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- nozzle
- giant
- small nozzle
- trunnion
- little
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Abstract
The utility model discloses an empty oxygen mixing arrangement of breathing machine, it includes the choke, and the one end of choke is provided with air intlet and the nozzle assembly that is used for adjusting the oxygen flow, and the other end of choke is provided with the gas outlet, and the big nozzle of nozzle assembly in the embedding choke is provided with little nozzle in the big nozzle, and little nozzle is provided with little orifice, forms annular big orifice between the inner wall of the outer wall of little nozzle and the terminal surface department of big nozzle, and its axial removal size in order to adjust big orifice in big nozzle can be followed to little nozzle, the utility model discloses an empty oxygen mixing arrangement of breathing machine, the accessible removes the size that big orifice was adjusted to little nozzle, selects different orifice apertures under the output flow rate of difference to reach stronger adsorption efficiency and anti back pressure ability, compare in prior art, can reach lower oxygen concentration under same output flow rate and back pressure, and the oxygen concentration under same back pressure, different flow is little for prior art's fluctuation, stability is higher.
Description
Technical field
This utility model relates to respirator technical field, particularly relates to a kind of empty oxygen mixing device of respirator.
Background technology
Respirator is that one can play prevention and therapy respiratory failure, reduces complication, saves and extend the vital armarium of patients ' lives, and the gas oxygen concentration level that patient sucks has a direct impact therapeutic effect.Portable first-aid, the transhipment respirator with sky oxygen mixed function of the prior art is utilize the principle of Venturi effect to reach the object sucking air substantially, but to there is oxygen concentration controlled resolution in this type of respirator low in empty oxygen mixing, only have pure oxygen and empty oxygen two grades adjustment, and the accessible minimum oxygen concentration of empty oxygen mixing is higher, the oxygen concentration of 50% can only be accomplished, and lower problem cannot be accomplished.
Utility model content
The purpose of this utility model is the empty oxygen mixing device providing a kind of respirator, it regulates the size of large spray orifice by mobile small nozzle, different spray orifice apertures is selected under different output flows, to reach stronger absorbability and anti-reflective pressure energy power, compared to prior art, can reach lower oxygen concentration under same output flow and back-pressure, and oxygen concentration under same back-pressure, different flow is little relative to the fluctuating margin of prior art, stability is higher.
For reaching this object, this utility model by the following technical solutions:
A kind of empty oxygen mixing device of respirator, comprise trunnion, one end of trunnion is provided with air intlet and for regulating the nozzle assembly of oxygen flow, the other end of trunnion is provided with gas outlet, nozzle assembly comprises the giant embedded in trunnion, and be provided with small nozzle in giant, small nozzle is provided with little spray orifice, form the large spray orifice of annular between the inwall of the outer wall of small nozzle and the end of giant, small nozzle can be axially mobile with the size regulating large spray orifice in giant along it.
Wherein, the axis of the axis of giant, small nozzle all with the axes coincide of trunnion.
Wherein, giant is the conically shaped of both ends open, and the large end face of giant is concordant with the end face of trunnion, and the large end face of giant has extended radially outward collar flange, and the outer circumference surface of collar flange and the inner surface of trunnion closely cooperate.
Wherein, one end of small nozzle is provided with tapered portion, form the large spray orifice of annular between the inwall at the outer wall of tapered portion and the small end face place of giant, the maximum outside diameter of tapered portion is greater than the internal diameter at the small end face place of giant, and the minimum outer diameter of tapered portion is less than the internal diameter at the small end face place of giant.
Wherein, the inwall at the large end face place of giant is provided with the sampling apparatus for detected pressures value, and sampling apparatus is connected with control device, and the force value that control device can detect according to sampling apparatus controls the displacement of small nozzle.
Wherein, the other end of small nozzle is provided with the driving device for driving small nozzle to move along its axis, and small nozzle has been disposed radially through hole at the sidewall near driving device, and through hole and little spray orifice are conducted.
Wherein, driving device is voice coil motor, is provided with back-moving spring between voice coil motor and small nozzle.
The beneficial effects of the utility model: a kind of empty oxygen mixing device of respirator, comprise trunnion, one end of trunnion is provided with air intlet and for regulating the nozzle assembly of oxygen flow, the other end of trunnion is provided with gas outlet, nozzle assembly comprises the giant embedded in trunnion, small nozzle is provided with in giant, small nozzle is provided with little spray orifice, form the large spray orifice of annular between the inwall of the outer wall of small nozzle and the end of giant, small nozzle can be axially mobile with the size regulating large spray orifice in giant along it.When output flow is larger, scalable small nozzle moves to the direction deviating from trunnion, until the area of large spray orifice is greater than the area of little spray orifice, high pressure oxygen sprays from large spray orifice, now, under same output flow and back-pressure, this utility model, relative to prior art, can reach lower oxygen concentration, have employed larger spray orifice aperture simultaneously, less and the problem that output flow that is that cause is less than normal in the aperture avoiding prior art, can realize larger tidal volume; When output flow is less, scalable small nozzle moves to the direction near trunnion, until the inwall of the outer wall of small nozzle and the end of giant is conflicted, namely the area of large spray orifice is zero, high pressure oxygen sprays from little spray orifice, now, under same output flow and back-pressure, this utility model is relative to prior art, have employed less spray orifice aperture, can produce stronger absorbability and anti-reflective pressure energy power, the air sucked from air intlet is more, to reach lower oxygen concentration.The empty oxygen mixing device of respirator of the present utility model, the size of large spray orifice is regulated by mobile small nozzle, different spray orifice apertures is selected under different output flows and back-pressure, to reach stronger absorbability and anti-reflective pressure energy power, compared to prior art, can reach lower oxygen concentration under same output flow, and oxygen concentration under same back-pressure, different flow is little relative to the fluctuating margin of prior art, stability is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of empty oxygen mixing device of the present utility model.
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Fig. 3 is the oxygen concentration schematic diagram of empty oxygen mixing device of the present utility model under different back-pressure, different flow.
Fig. 4 is the oxygen concentration schematic diagram of respirator under different back-pressure, different flow of prior art.
Reference numeral is as follows:
1-trunnion; 11-air intlet; 12-gas outlet; 2-giant; The large spray orifice of 21-; 22-collar flange; 3-small nozzle; The little spray orifice of 31-; 32-tapered portion; 33-through hole; 4-sampling apparatus; 5-voice coil motor; 6-back-moving spring
Detailed description of the invention
The technical solution of the utility model is further illustrated by specific embodiment below in conjunction with Fig. 1 to Fig. 4.
A kind of empty oxygen mixing device of respirator, as depicted in figs. 1 and 2, comprise trunnion 1, one end of trunnion 1 is provided with air intlet 11 and for regulating the nozzle assembly of oxygen flow (not shown), the other end of trunnion 1 is provided with gas outlet 12, nozzle assembly comprises the giant 2 embedded in trunnion 1, small nozzle 3 is provided with in giant 2, small nozzle 3 is provided with little spray orifice 31, form the large spray orifice 21 of annular between the inwall of the outer wall of small nozzle 3 and the end of giant 2, small nozzle 3 can be axially mobile with the size regulating large spray orifice 21 in giant 2 along it.
From nozzle assembly input high pressure oxygen, the negative pressure produced when utilizing high pressure oxygen to spray from nozzle assembly, suck the air air from air intlet 11, and mix with the high pressure oxygen of input, the mist that high pressure oxygen and air are mixed to form exports from gas outlet 12.When output flow is larger, scalable small nozzle 3 moves to the direction deviating from trunnion 1, until the area of large spray orifice 21 is greater than the area of little spray orifice 31, high pressure oxygen sprays from large spray orifice 21, now, under same output flow and back-pressure, this utility model, relative to prior art, can reach lower oxygen concentration, have employed larger spray orifice aperture simultaneously, less and the problem that output flow that is that cause is less than normal in the aperture avoiding prior art, can realize larger tidal volume; When output flow is less, scalable small nozzle 3 moves to the direction near trunnion 1, until the inwall of the end of the outer wall of small nozzle 3 and giant 2 is conflicted, namely the area of large spray orifice 21 is zero, high pressure oxygen sprays from little spray orifice 31, now, under same output flow and back-pressure, this utility model is relative to prior art, have employed less spray orifice aperture, can produce stronger absorbability and anti-reflective pressure energy power, the air sucked from air intlet 11 is more, to reach lower oxygen concentration.
In the present embodiment, the axis of giant 2, the axis of small nozzle 3 all with the axes coincide of trunnion 1, make the high pressure oxygen sprayed be positioned at the center of trunnion 1, be convenient to mix with the air sucked.
In the present embodiment, giant 2 is the conically shaped of both ends open, the large end face of giant 2 is concordant with the end face of trunnion 1, the large end face of giant 2 has extended radially outward collar flange 22, the outer circumference surface of collar flange 22 and the inner surface of trunnion 1 closely cooperate, to avoid leaking gas between giant 2 and trunnion 1.
In the present embodiment, one end of small nozzle 3 is provided with tapered portion 32, the large spray orifice 21 of annular is formed between the inwall at the outer wall of tapered portion 32 and the small end face place of giant 2, the maximum outside diameter of tapered portion 32 is greater than the internal diameter at the small end face place of giant 2, and the minimum outer diameter of tapered portion 32 is less than the internal diameter at the small end face place of giant 2.The setting of tapered portion 32, makes the position being adjusted tapered portion 32 by mobile small nozzle 3, to regulate the area of large spray orifice 21.
In the present embodiment, the inwall at the large end face place of giant 2 is provided with the sampling apparatus 4 for detected pressures value, sampling apparatus 4 can detect the back pressure of spray orifice front end, sampling apparatus 4 is connected with control device (not shown), the force value that control device can detect according to sampling apparatus 4 controls the displacement of small nozzle 3, reaches desirable absorbability and anti-reflective pressure energy power to make this device.
In the present embodiment, the other end of small nozzle 3 is provided with the driving device for driving small nozzle 3 to move along its axis; Preferably, driving device is voice coil motor 5, is provided with back-moving spring 6 between voice coil motor 5 and small nozzle 3.Small nozzle 3 can move under the driving of voice coil motor 5 vertically, and can reset under the active force of back-moving spring 6.During original state, under the active force of back-moving spring 6, the inwall at the outer wall of the tapered portion 32 of small nozzle 3 and the small end face place of giant 2 is conflicted, and to make the area of large spray orifice 21 for zero, now, high pressure oxygen sprays from little spray orifice 31; Further preferably, small nozzle 3 has been disposed radially through hole 33 at the sidewall near driving device, and through hole 33 and little spray orifice 31 are conducted, and when high pressure oxygen sprays from little spray orifice 31, through hole 33 is the air inlet of high pressure oxygen.
As shown in Figure 3, be the oxygen concentration schematic diagram of empty oxygen mixing device of the present utility model under different back-pressure, different flow, transverse axis represents output flow, and longitudinal axis representative exports the oxygen concentration of mist.As the 60mbar curved section in Fig. 3, represent that airway pressure is now 60mbar, this curved section embodies output flow when being the flow of 0 ~ 120L/min, the change of the oxygen concentration of corresponding output mist.As can be seen from Figure 3, minimum oxygen concentration of the present utility model can reach about 33%, and less in the oxygen concentration fluctuating margin of same back-pressure, different flow, and stability is higher, and namely curve is comparatively mild, and in addition, the maximum output flow that can reach is 120L/min.
As shown in Figure 4, be the oxygen concentration schematic diagram of respirator under different back-pressure, different flow of prior art, transverse axis represents output flow, and longitudinal axis representative exports the oxygen concentration of mist.As can be seen from Figure 4, the minimum oxygen concentration of prior art can only reach about 48%, and comparatively large in the oxygen concentration fluctuating margin of same back-pressure, different flow, and namely curve is comparatively steep, and not gently, in addition, the maximum output flow that can reach is 50 ~ 60L/min.
Comparison diagram 3 and Fig. 4 known:
(1) limit oxygen concentration of empty oxygen mixing device of the present utility model under same back-pressure is low relative to prior art by about 15%;
(2) empty oxygen mixing device of the present utility model is little relative to the fluctuating margin of prior art at the oxygen concentration of same back-pressure, different flow, and stability is higher;
(3) the maximum output flow of empty oxygen mixing device of the present utility model under same back-pressure is about 2 times of prior art.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (7)
1. the empty oxygen mixing device of a respirator, comprise trunnion (1), it is characterized in that, one end of described trunnion (1) is provided with air intlet (11) and for regulating the nozzle assembly of oxygen flow, the other end of described trunnion (1) is provided with gas outlet (12), described nozzle assembly comprises the giant (2) embedded in described trunnion (1), small nozzle (3) is provided with in described giant (2), described small nozzle (3) is provided with little spray orifice (31), the large spray orifice (21) of annular is formed between the inwall of the outer wall of described small nozzle (3) and the end of described giant (2), described small nozzle (3) can be axially mobile with the size regulating described large spray orifice (21) in described giant (2) along it.
2. empty oxygen mixing device according to claim 1, is characterized in that, the axis of the axis of described giant (2), described small nozzle (3) all with the axes coincide of described trunnion (1).
3. empty oxygen mixing device according to claim 1, it is characterized in that, the conically shaped that described giant (2) is both ends open, the large end face of described giant (2) is concordant with the end face of described trunnion (1), the large end face of described giant (2) has extended radially outward collar flange (22), and the outer circumference surface of described collar flange (22) and the inner surface of described trunnion (1) closely cooperate.
4. empty oxygen mixing device according to claim 3, it is characterized in that, one end of described small nozzle (3) is provided with tapered portion (32), the described large spray orifice (21) of annular is formed between the inwall at the outer wall of described tapered portion (32) and the small end face place of described giant (2), the maximum outside diameter of described tapered portion (32) is greater than the internal diameter at the small end face place of described giant (2), and the minimum outer diameter of described tapered portion (32) is less than the internal diameter at the small end face place of described giant (2).
5. empty oxygen mixing device according to claim 3, it is characterized in that, the inwall at the large end face place of described giant (2) is provided with the sampling apparatus (4) for detected pressures value, described sampling apparatus (4) is connected with control device, and the force value that described control device can detect according to sampling apparatus (4) controls the displacement of described small nozzle (3).
6. empty oxygen mixing device according to claim 1, it is characterized in that, the other end of described small nozzle (3) is provided with the driving device for driving described small nozzle (3) to move along its axis, described small nozzle (3) has been disposed radially through hole (33) at the sidewall near described driving device, and described through hole (33) and described little spray orifice (31) are conducted.
7. empty oxygen mixing device according to claim 6, it is characterized in that, described driving device is voice coil motor (5), is provided with back-moving spring (6) between described voice coil motor (5) and described small nozzle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513881.7U CN204840566U (en) | 2015-07-15 | 2015-07-15 | Empty oxygen mixing arrangement of breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513881.7U CN204840566U (en) | 2015-07-15 | 2015-07-15 | Empty oxygen mixing arrangement of breathing machine |
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| Publication Number | Publication Date |
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| CN204840566U true CN204840566U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520513881.7U Withdrawn - After Issue CN204840566U (en) | 2015-07-15 | 2015-07-15 | Empty oxygen mixing arrangement of breathing machine |
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| CN (1) | CN204840566U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958817A (en) * | 2015-07-15 | 2015-10-07 | 深圳市安保科技有限公司 | Air and oxygen mixing device and method for respirator |
| CN105963838A (en) * | 2016-06-08 | 2016-09-28 | 湖南明康中锦医疗科技发展有限公司 | Air-oxygen mixing structure for breathing machine and breathing machine |
| WO2018217711A1 (en) | 2017-05-22 | 2018-11-29 | Vayu Global Health Innovations, LLC | An adjustable ambient air-oxygen blender |
| CN112935461A (en) * | 2021-03-15 | 2021-06-11 | 上海酷奥制冷设备有限公司 | Multi-stage oxygen uptake welding gun nozzle and welding gun |
-
2015
- 2015-07-15 CN CN201520513881.7U patent/CN204840566U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958817A (en) * | 2015-07-15 | 2015-10-07 | 深圳市安保科技有限公司 | Air and oxygen mixing device and method for respirator |
| CN105963838A (en) * | 2016-06-08 | 2016-09-28 | 湖南明康中锦医疗科技发展有限公司 | Air-oxygen mixing structure for breathing machine and breathing machine |
| WO2018217711A1 (en) | 2017-05-22 | 2018-11-29 | Vayu Global Health Innovations, LLC | An adjustable ambient air-oxygen blender |
| CN110662574A (en) * | 2017-05-22 | 2020-01-07 | 瓦优全球健康创新有限责任公司 | Adjustable ambient air-oxygen mixer |
| EP3624882A4 (en) * | 2017-05-22 | 2020-11-11 | Vayu Global Health Innovations, LLC | An adjustable ambient air-oxygen blender |
| US11524132B2 (en) | 2017-05-22 | 2022-12-13 | Vayu Global Health Innovations, LLC | Adjustable ambient air-oxygen blender |
| CN110662574B (en) * | 2017-05-22 | 2023-02-17 | 瓦优全球健康创新有限责任公司 | Adjustable ambient air-oxygen mixer |
| CN112935461A (en) * | 2021-03-15 | 2021-06-11 | 上海酷奥制冷设备有限公司 | Multi-stage oxygen uptake welding gun nozzle and welding gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151209 Effective date of abandoning: 20170711 |
|
| AV01 | Patent right actively abandoned |