CN102500025A - Anti-suffocation free aspiration system of respirator - Google Patents
Anti-suffocation free aspiration system of respirator Download PDFInfo
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- CN102500025A CN102500025A CN2011103924332A CN201110392433A CN102500025A CN 102500025 A CN102500025 A CN 102500025A CN 2011103924332 A CN2011103924332 A CN 2011103924332A CN 201110392433 A CN201110392433 A CN 201110392433A CN 102500025 A CN102500025 A CN 102500025A
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- respirator
- gas circuit
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Abstract
The invention relates to an anti-suffocation free aspiration system of a respirator. The anti-suffocation free aspiration system comprises a free respiration valve (SV), a first check valve (CV4) which is in bypass communication with a first air source passage of a mixing cavity, a second one-way valve (CV5) which is in bypass communication with a second air source passage of the mixing cavity, a two-position three-way solenoid operated valve (SOV1) and a control unit, wherein an air passage at the outlet end of the two-position three-way electromagnetic valve is communicated with the pneumatic control end of the free respiration valve, the exhaust port end is communicated with atmosphere, and the inlet end is respectively communicated with the output end of the first one-way valve and the output end of the second one-way valve via the air passages through a bifurcation; when the two-position three-way electromagnetic valve has no control signals or is not electrified, the outlet end of the two-position three-way electromagnetic valve is communicated with the exhaust port end through the air passage; the control unit is electrically connected with the control end of the two-position three-way electromagnetic valve and used for controlling the two-position three-way electromagnetic valve to enable the outlet end of the two-position three-way electromagnetic valve to be communicated with the inlet end through a gas circuit; and when high-pressure gas exists at the pneumatic control end, the free respiration valve can be closed. The anti-suffocation free aspiration system of the respirator can be tightly closed and ensure the safety in respiration of a user.
Description
Technical field
The present invention relates to flow transducer, be specifically related to the anti-free suction system that suffocates of a kind of respirator, especially be applied in the medical electronics.
Background technology
As shown in Figure 1; Free breather valve SV in the respirator is connected between outside atmosphere and the hybrid chamber; When oxygen and compressed air stop supplies, free breather valve SV opens outside atmosphere and hybrid chamber is communicated with, and guarantees user breathing safety; And free breather valve SV closes outside atmosphere and hybrid chamber is broken off when the respirator operate as normal, is supplied to user to breathe by oxygen and compressed air.The free breather valve SV of tradition adopts electronic control or machinery control, adopts that power-down state can't guarantee user breathing safety down when electronic.Not tight when adopting machinery.
Summary of the invention
The technical issues that need to address of the present invention are, how to provide a kind of respirator the anti-free suction system that suffocates, and can close tight and can guarantee that user breathes safety simultaneously.
The above-mentioned technical problem of the present invention solves like this: make up the anti-free suction system that suffocates of a kind of respirator, comprise being communicated with hybrid chamber and atmospheric free breather valve when opening, it is characterized in that, this anti-free suction system that suffocates also comprises:
First check valve, bypass are communicated with the first source of the gas path of said hybrid chamber;
Second check valve, bypass are communicated with the second source of the gas path of said hybrid chamber;
Two-position three way magnetic valve, port of export gas circuit are communicated with the pneumatic control end of said free breather valve, and the exhaust port side gas circuit is communicated with atmosphere, and arrival end bifurcated gas circuit is communicated with the outfan of first check valve and the outfan of second check valve; When said two-position three way magnetic valve did not have control signal or no power, the said port of export was communicated with the exhaust port side gas circuit;
Control unit is electrically connected the control end of said two-position three way magnetic valve, is used to control said two-position three way magnetic valve its port of export is communicated with the arrival end gas circuit; When there were gases at high pressure in said pneumatic control end, said free breather valve cut out.
According to the anti-free suction system that suffocates of respirator provided by the invention, the first source of the gas path comprises string first air relief valve and first proportioning valve above that successively; The other gas circuit of first check valve is communicated with on the pipeline between first air relief valve and first proportioning valve.
According to the anti-free suction system that suffocates of respirator provided by the invention, the second source of the gas path comprises string second air relief valve and second proportioning valve above that successively; The other gas circuit of second check valve is communicated with on the pipeline between second air relief valve and second proportioning valve.
The anti-free suction system that suffocates of respirator provided by the invention, the free breather valve of employing pneumatic control is not supplied high-pressure air source and is opened free breather valve when no control signal or outage, and prior art has following advantage relatively:
1, gases at high pressure are closed free breather valve, close tight;
2, when outage is unusual, open free breather valve and guarantee user safety;
Even 3 free breather valves are connected high-pressure air source, because high-pressure air source and user respiratory gas source homology so can not cause serious security incident yet.
Description of drawings
Further the present invention is elaborated below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 is traditional free breather valve gas circuit structure sketch map;
Fig. 2 is the free breather valve gas circuit structure sketch map that the anti-free suction system that suffocates of respirator of the present invention is set;
Fig. 3 is the sketch map of the anti-work that suffocates of free breather valve gas circuit shown in Figure 2;
Fig. 4 is the sketch map of free breather valve gas circuit operate as normal shown in Figure 2.
The specific embodiment
The anti-free suction system that suffocates of the respirator of the specific embodiment of the invention, gas circuit structure is as shown in Figure 2, is communicated with hybrid chamber and atmospheric free breather valve SV and pneumatic control thereof when opening partly to form, and wherein pneumatic control partly comprises:
(1) with the homologous high-pressure air source of hybrid chamber source of the gas
The first check valve CV4, other gas circuit is communicated with the first source of the gas path of said hybrid chamber; The second check valve CV5, other gas circuit is communicated with the second source of the gas path of said hybrid chamber;
(2) control
Two-position three way magnetic valve SOV1, port of export gas circuit is communicated with the pneumatic control end of said free breather valve SV, exhaust port side is communicated with atmosphere, arrival end through bifurcated respectively gas circuit be communicated with the outfan of the first check valve CV4 and the outfan of the second check valve CV5; When there were gases at high pressure in said pneumatic control end, said free breather valve cut out the path of said hybrid chamber and outside atmosphere, otherwise opened this path.
The anti-free suction system that suffocates of this respirator also comprises the circuit control section; This free breather valve operation principle is: main gas circuit continues air feed; Supplying with free breather valve SV pneumatic control end makes free breather valve SV close hybrid chamber and outside atmosphere communication passage; (1) as shown in Figure 3, when two-position three way magnetic valve SOV1 did not have the control signal no power, free breather valve SV pneumatic control end was communicated with outside atmosphere; No high voltage control is opened valve SV, and user is breathed pipeline and is communicated with outside atmosphere through hybrid chamber; User can be inhaled the gas in the outside atmosphere through free breather valve SV; (2) as shown in Figure 4; Control provides signal when system, and during energising, two-position three way magnetic valve SOV1 connects free breather valve SV pneumatic control end and gases at high pressure; High voltage control gas is closed free inlet valve SV, and main gas circuit does not have external leakage ground and supplies knot user gas.Normal effective use the when guaranteeing user breathing safety like this with work.
The above is merely preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (3)
1. the anti-free suction system that suffocates of respirator comprises being communicated with hybrid chamber and atmospheric free breather valve (SV) when opening, and it is characterized in that, this anti-free suction system that suffocates also comprises:
First check valve (CV4), bypass are communicated with the first source of the gas path of said hybrid chamber;
Second check valve (CV5), bypass are communicated with the second source of the gas path of said hybrid chamber;
Two-position three way magnetic valve (SOV1); Port of export gas circuit is communicated with the pneumatic control end of said free breather valve (SV); Exhaust port side is communicated with atmosphere, arrival end through bifurcated respectively gas circuit be communicated with the outfan of first check valve (CV4) and the outfan of second check valve (CV5); When no control signal of said two-position three way magnetic valve (SOV1) or no power, the said port of export is communicated with the exhaust port side gas circuit;
Control unit is electrically connected the control end of said two-position three way magnetic valve (SOV1), is used to control said two-position three way magnetic valve its port of export is communicated with the arrival end gas circuit; When there were gases at high pressure in said pneumatic control end, said free breather valve cut out.
2. according to the anti-free suction system that suffocates of the said respirator of claim 1, it is characterized in that the first source of the gas path comprises string first air relief valve and first proportioning valve above that successively; The other gas circuit of first check valve (CV4) is communicated with on the pipeline between first air relief valve and first proportioning valve.
3. according to the anti-free suction system that suffocates of the said respirator of claim 1, it is characterized in that the second source of the gas path comprises string second air relief valve and second proportioning valve above that successively; The other gas circuit of second check valve (CV5) is communicated with on the pipeline between second air relief valve and second proportioning valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110392433.2A CN102500025B (en) | 2011-12-01 | 2011-12-01 | Anti-suffocation free aspiration system of respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110392433.2A CN102500025B (en) | 2011-12-01 | 2011-12-01 | Anti-suffocation free aspiration system of respirator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102500025A true CN102500025A (en) | 2012-06-20 |
| CN102500025B CN102500025B (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110392433.2A Expired - Fee Related CN102500025B (en) | 2011-12-01 | 2011-12-01 | Anti-suffocation free aspiration system of respirator |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0188071A1 (en) * | 1984-11-30 | 1986-07-23 | Tottori University | Breath-synchronized concentrated-oxygen supplier |
| CN87201237U (en) * | 1987-04-13 | 1987-12-31 | 上海市医械模具厂 | Multi-functional anaesthesia machine |
| CN88200314U (en) * | 1988-01-20 | 1988-10-19 | 航天工业部中心医院 | Maltifunction anaesthesia respiratory system |
| EP0519742A1 (en) * | 1991-06-21 | 1992-12-23 | Devilbiss Health Care, Inc. | Medical nebulizer control system |
| CN101310790A (en) * | 2007-06-28 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Multifunctional safety valve |
| US20090120438A1 (en) * | 2005-06-23 | 2009-05-14 | Philippe Chalvignac | Breathing Assistance Device Comprising an Independent Secondary Unit |
| CN101618246A (en) * | 2008-07-02 | 2010-01-06 | 北京谊安医疗系统股份有限公司 | Respirator system |
-
2011
- 2011-12-01 CN CN201110392433.2A patent/CN102500025B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0188071A1 (en) * | 1984-11-30 | 1986-07-23 | Tottori University | Breath-synchronized concentrated-oxygen supplier |
| CN87201237U (en) * | 1987-04-13 | 1987-12-31 | 上海市医械模具厂 | Multi-functional anaesthesia machine |
| CN88200314U (en) * | 1988-01-20 | 1988-10-19 | 航天工业部中心医院 | Maltifunction anaesthesia respiratory system |
| EP0519742A1 (en) * | 1991-06-21 | 1992-12-23 | Devilbiss Health Care, Inc. | Medical nebulizer control system |
| US20090120438A1 (en) * | 2005-06-23 | 2009-05-14 | Philippe Chalvignac | Breathing Assistance Device Comprising an Independent Secondary Unit |
| CN101310790A (en) * | 2007-06-28 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Multifunctional safety valve |
| CN101618246A (en) * | 2008-07-02 | 2010-01-06 | 北京谊安医疗系统股份有限公司 | Respirator system |
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| Publication number | Publication date |
|---|---|
| CN102500025B (en) | 2014-04-09 |
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