CN101983738B - Pressure control valve for breathing machine - Google Patents
Pressure control valve for breathing machine Download PDFInfo
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- CN101983738B CN101983738B CN 201010562279 CN201010562279A CN101983738B CN 101983738 B CN101983738 B CN 101983738B CN 201010562279 CN201010562279 CN 201010562279 CN 201010562279 A CN201010562279 A CN 201010562279A CN 101983738 B CN101983738 B CN 101983738B
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- sliding sleeve
- motor
- air distribution
- spool
- distribution
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Abstract
The invention relates to a control valve for adjusting air channel pressure and flow of a breathing machine. The control valve comprises a valve body, a valve core, an air distribution sliding sleeve, a motor and a fan exhaust pipe. The control valve is characterized in that: the motor is provided with a motor shock-proof sleeve and a motor sleeve, a motor shaft is provided with a magnetic coil and a Hall sensor, the outer side of the valve core is provided with the air distribution sliding sleeve, a certain movable clearance is formed between the valve core and the air distribution sliding sleeve, a rack is fixedly connected on the air distribution sliding sleeve, a guide rail is arranged below the rack, and the rack is engaged with a motor gear; the air distribution sliding sleeve is provided with a positioning sensor, a sealing ring and a sealing cover; the middle of the hollow valve core is provided with a partition board, and the valve core on two sides of the partition board is provided with an exhaust hole and an air inlet respectively; the same circumference of the air distribution sliding sleeve is provided with at least two air distribution holes; and the air distribution holes can respond to the exhaust hole and the air inlet on the valve core respectively. The control valve has the advantages of simple structure, low cost, low noise during use, safety, reliability and capability of realizing stepless voltage adjustment.
Description
Technical field
The invention belongs to technical field of medical instruments, particularly relate to a kind of control valve for respirator gas circuit pressure and Flow-rate adjustment.
Background technology
Sleep-apnea (Sleep Apnea Syndrome.SAS) is a kind of common and sleep disordered breathing disease of day by day coming into one's own.China SAS patient is more than 2,000 ten thousand. and its sickness rate in the adult is very high, and especially its sickness rate of old people is 50% left and right.Snoring when its l clinical manifestation is sleep, hypopnea or the asphyxia of outbreak repeatedly.SAS has a strong impact on patient and other people sleep quality. and severe patient can cause the complication of the important vital organs such as cardio-cerebral-pulmo and kidney.Treatment to SAS can be adopted the methods such as continuous positive airway pressure, behavior therapy, operative treatment and Drug therapy, and wherein the continuous positive airway pressure treatment has become the generally acknowledged the most effective and safe method of SAS treatment.
The key that sleep apnea occurs is the stenosis or occlusion of air flue, therefore treat the various noinvasive ventilators of SAS all based on a kind of like this ultimate principle: provide suitable Positive Airway Pressure when the patient sleeps, strut air flue unimpeded with the air-flow that ensures respiration, reach the purpose of eliminating apnea.The characteristics of this kind machine are that the pressure of inspiratory phase and expiratory phase can be regulated respectively, and when namely air-breathing, the sleep machine is sent higher default pressure of inspiration(Pi), help the patient with in more gas suction body; During expiration, the sleep machine is converted to default lower expiratory pressure automatically, and the patient is easy to the gas in lung is breathed out.
Breather valve mainly adopts turbofan that airborne gas is pressed into internal cavity at present, by breather valve, air-flow is transported to hose again, be transported to again patient's face shield part by flexible pipe, to reach the effect that patient is applied gas pressure, when patient is in the expiration state, gas from face shield to the direction of breather valve
Flow, need to switch this time to valve, the cavity of patient end is communicated with air vent, with Exhaled gasesS discharged to atmosphere.In prior art, another kind of breather valve adopts the structure of air inlet driving device, air driving device, by the direct switching of valve at several cavitys, can not realize stepless adjust blood pressure process, pressure in breathing process can only be regulated by the speed of blower fan, pressure in exhaust process is regulated by the aperture of delivery outlet, has caused and has breathed the difficulty that phase pressure is regulated; Be direct switching due to what adopt, the centre does not have transient process, causes air pressure directly to communicate with lower from height, produces very large noise, therefore need to install silencing means additional, has not only improved noise, has increased cost yet.
Summary of the invention
That the object of the invention is to provide is simple in structure, with low cost, noise is little, safe, reliable, can realize the breather valve that is used for respirator gas circuit pressure and Flow-rate adjustment of stepless voltage regulation.
the objective of the invention is to adopt such technical solution to realize: it comprises valve body, spool, the distribution sliding sleeve, motor and blower fan exhaustor, described valve body is provided with blowing mouth, described spool is fixedly installed in the valve body intracavity, the two ends of spool are respectively equipped with blower fan exhaustor and back cavity, on described motor, gear is installed, it is characterized in that motor is provided with motor anti-vibration sleeve and motor cover, motor shaft is provided with magnetosphere and Hall element, the described spool outside is provided with the distribution sliding sleeve, between spool and distribution sliding sleeve, certain free gap is arranged, be connected with tooth bar on the distribution sliding sleeve, the tooth bar below is provided with guide rail, this tooth bar is meshed with motor gear, the distribution sliding sleeve is provided with alignment sensor and sealing ring and lid, be provided with dividing plate in the middle of the spool of described hollow, be respectively equipped with steam vent and return port on the spool of dividing plate both sides, at least be provided with two air distribution holes on the same circumference of distribution sliding sleeve, air distribution hole on described distribution sliding sleeve can be corresponding with steam vent and return port on spool respectively.
The present invention compares with background technology, due to dividing plate being set in spool, on spool, clearance fit has the distribution sliding sleeve, and the distribution sliding sleeve on demand can be respectively with the steam vent of spool with return port is corresponding, the structure of sensor is set on the distribution sliding sleeve, when valve is in maximum ventilation or maximum reflux state, this sensor provides framing signal, and control circuit makes motor reciprocating in the travel range that presets.Motor shaft is provided with the reliability that magnetosphere and Hall element can be guaranteed machine operation, when motor blocks, namely reports to the police after sensor detects, and the guide rail that the tooth bar below is provided with can stop distribution to slide under the effect of gear radial force around Spool rotating.All these have created condition for effectively controlling gas flow and adjustable pressure, and it is one of desirable control valve that is used at present respirator gas circuit pressure and Flow-rate adjustment, has the characteristics such as noise is little, safe, reliable.
Description of drawings
Fig. 1 is plan structure schematic diagram of the present invention
Fig. 2 is side-looking structural representation of the present invention
Fig. 3 is the structural representation of facing of the present invention
Fig. 4 is partial structurtes schematic diagram of the present invention
Label declaration: 1. the cover that refluxes, 2. Hall element, 3. sensor holder, 4. valve body, 5. gear, 6.
Motor cover, 7. motor anti-vibration sleeve, 8. magnetosphere, 9. motor, 10. guide rail, 11. return ports, 12. spools, 13. blower fan exhaustors, 14. steam vent, 15. distribution sliding sleeves, 16. air distribution holes, 17. sealing rings, 18. alignment sensor, 19. sender unit caps, 20. tooth bars, 21. screws, 22. sealing ring, 23. back cavities, 24. blowing mouths, 25. anti-vibration sleeve, 26. hold-down screws, 27. dividing plates.
The specific embodiment
with reference to accompanying drawing 1, the present invention includes valve body 4, spool 12, distribution sliding sleeve 15, motor 9 and blower fan exhaustor 13, described valve body is provided with blowing mouth 24, described spool 12 is fixedly installed in valve body 4 intracavity, the two ends of spool 12 are respectively equipped with blower fan exhaustor 13 and back cavity 23, on described motor 9, gear 5 is installed, it is characterized in that motor 9 is provided with motor anti-vibration sleeve 7, motor cover 6, with screw 21, motor cover 6 is fixed on motor anti-vibration sleeve 7 outsides, motor 9 axles are provided with magnetosphere 8 and Hall element 2, described spool 12 outsides are provided with distribution sliding sleeve 15, between spool 12 and distribution sliding sleeve 15, certain free gap is arranged, be connected with tooth bar 20 on distribution sliding sleeve 15, tooth bar 20 belows are provided with guide rail 10, this tooth bar 20 is meshed with motor gear 5, distribution sliding sleeve 15 is provided with alignment sensor 18 and sensor holder 3 and sealing ring and covers 22, be provided with dividing plate 27 in the middle of the spool 12 of described hollow, be respectively equipped with steam vent 14 and return port 11 on the spool 12 of dividing plate 27 both sides, at least be provided with two air distribution holes 16 on the same circumference of distribution sliding sleeve 15, air distribution hole 16 on described distribution sliding sleeve 15 can be corresponding with steam vent 14 and return port 11 difference on spool.
When the present invention uses, with anti-vibration sleeve 25, hold-down screw 26, pressure-control valve of the present invention is fixed on respirator.Motor 9 and induction apparatus 2,18 adopt known mode to be connected to controller.Through blower fan exhaustor 13, enter spool return port 11 1 side cavitys from blower fan compressed air out, when the air distribution hole on distribution sliding sleeve 15 was communicated with return port 11, Compressed Gas namely was transported to patient end from air distribution hole 16 through delivery outlet 24.When patient exhales, blowing mouth 24 increased pressure, motor 9 driven gears 5, drag magnetic stripe 20 and whole distribution cover 15, when air distribution hole 16 on distribution sliding sleeve 15 is communicated with steam vent 14, compressed air is blocked by dividing plate 27, and the breath of blowing mouth 24 is transported to back cavity 23 from air distribution hole 16 through steam vent 14.Because return port 11 and steam vent 14 have adopted triangle or fan-shaped, can overlap in sliding process in distribution, realize electrodeless connection that air distribution hole 16 and return port 11 are connected with steam vent, reach the purpose of adjustment pressure flow between each cavity.
Claims (1)
1. the pressure-control valve of used for respirators, comprise valve body, spool, the distribution sliding sleeve, motor and blower fan exhaustor, described valve body is provided with blowing mouth, described spool is fixedly installed in the valve body intracavity, the two ends of spool are respectively equipped with blower fan exhaustor and back cavity, on described motor, gear is installed, it is characterized in that motor is provided with motor anti-vibration sleeve and motor cover, motor shaft is provided with magnetosphere and Hall element, the described spool outside is provided with the distribution sliding sleeve, between spool and distribution sliding sleeve, certain free gap is arranged, be connected with tooth bar on the distribution sliding sleeve, the tooth bar below is provided with guide rail, this tooth bar is meshed with motor gear, the distribution sliding sleeve is provided with alignment sensor and sealing ring and lid, described spool is hollow, and the middle dividing plate that is provided with of described spool, be respectively equipped with steam vent and return port on the spool of dividing plate both sides, at least be provided with two air distribution holes on the same circumference of distribution sliding sleeve, air distribution hole on described distribution sliding sleeve can be corresponding with steam vent and a hole in return port on spool respectively, described return port and steam vent be shaped as inverted triangle or fan-shaped in a kind of, when air-breathing, through the blower fan exhaustor, enter spool steam vent one side cavity from blower fan compressed air out, when the air distribution hole on the distribution sliding sleeve was communicated with steam vent, Compressed Gas namely was transported to patient end from air distribution hole through delivery outlet, during expiration, the blowing mouth increased pressure, motor driven gear, drag magnetic stripe and whole distribution cover, when air distribution hole on the distribution sliding sleeve is communicated with steam vent, compressed air is blocked by dividing plate, and the breath of blowing mouth is transported to back cavity from air distribution hole through outlet, realizes that air distribution hole is connected 14 with return port with steam vent) electrodeless the connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010562279 CN101983738B (en) | 2010-07-20 | 2010-11-21 | Pressure control valve for breathing machine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010231587 | 2010-07-20 | ||
| CN201010231587.9 | 2010-07-20 | ||
| CN 201010562279 CN101983738B (en) | 2010-07-20 | 2010-11-21 | Pressure control valve for breathing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101983738A CN101983738A (en) | 2011-03-09 |
| CN101983738B true CN101983738B (en) | 2013-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010562279 Expired - Fee Related CN101983738B (en) | 2010-07-20 | 2010-11-21 | Pressure control valve for breathing machine |
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| Country | Link |
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| CN (1) | CN101983738B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104906677B (en) * | 2015-05-27 | 2017-12-19 | 西安汇智医疗集团有限公司 | A kind of flow measurement and control module that can correct valve opening automatically |
| JP6898912B2 (en) * | 2015-07-16 | 2021-07-07 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Systems and methods for analyzing the upper respiratory tract, as well as respiratory pressure support systems |
| CN106695247A (en) * | 2015-07-28 | 2017-05-24 | 北京谊安医疗系统股份有限公司 | Plastic shaft sleeve and metal seat combined machining and surface treatment method |
| CN106267497B (en) * | 2016-10-24 | 2018-10-23 | 湖南万脉医疗科技有限公司 | A kind of high-accuracy ventilation flow rate control system and medical breathing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267832A (en) * | 1978-04-18 | 1981-05-19 | Haekkinen Taisto | Expiration valve apparatus for use with a respirator or like apparatus |
| CN101168077A (en) * | 2006-10-23 | 2008-04-30 | 杨福生 | Ventilation proportion valve for respirator |
| CN101584899A (en) * | 2008-05-23 | 2009-11-25 | 沈阳新松维尔康科技有限公司 | A kind of noninvasive ventilator proportion valve that is used for |
| CN201939849U (en) * | 2010-07-20 | 2011-08-24 | 浙江玉升医疗器械股份有限公司 | Pressure control valve for breather |
-
2010
- 2010-11-21 CN CN 201010562279 patent/CN101983738B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267832A (en) * | 1978-04-18 | 1981-05-19 | Haekkinen Taisto | Expiration valve apparatus for use with a respirator or like apparatus |
| CN101168077A (en) * | 2006-10-23 | 2008-04-30 | 杨福生 | Ventilation proportion valve for respirator |
| CN101584899A (en) * | 2008-05-23 | 2009-11-25 | 沈阳新松维尔康科技有限公司 | A kind of noninvasive ventilator proportion valve that is used for |
| CN201939849U (en) * | 2010-07-20 | 2011-08-24 | 浙江玉升医疗器械股份有限公司 | Pressure control valve for breather |
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| Publication number | Publication date |
|---|---|
| CN101983738A (en) | 2011-03-09 |
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Granted publication date: 20130508 Termination date: 20201121 |