CN102500025B - Anti-suffocation free aspiration system of respirator - Google Patents
Anti-suffocation free aspiration system of respirator Download PDFInfo
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- CN102500025B CN102500025B CN201110392433.2A CN201110392433A CN102500025B CN 102500025 B CN102500025 B CN 102500025B CN 201110392433 A CN201110392433 A CN 201110392433A CN 102500025 B CN102500025 B CN 102500025B
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- aspiration system
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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 a kind of Anti-suffocation free aspiration system of respirator, be especially applied in medical electronics.
Background technology
As shown in Figure 1, free breather valve SV in respirator is connected between outside atmosphere and hybrid chamber, when oxygen and compressed air stop supplies, free breather valve SV opens outside atmosphere and hybrid chamber is communicated with, guarantee user breathing safety, and when respirator is normally worked, free breather valve SV closes outside atmosphere and hybrid chamber is broken off, and by oxygen and compressed air, is supplied to user to breathe.The free breather valve SV of tradition adopts electronic control or machinery to control, and adopts and under power-down state, cannot guarantee that user breathes safety when electronic.Not tight while adopting machinery.
Summary of the invention
The technical issues that need to address of the present invention are, how a kind of Anti-suffocation free aspiration system of respirator is provided, and can close tight and can guarantee that user breathes safety simultaneously.
The above-mentioned technical problem of the present invention solves like this: build a kind of Anti-suffocation free aspiration system of respirator, comprise the free breather valve that is communicated with hybrid chamber and atmosphere while opening, it is characterized in that, this anti-free suction system that suffocates also comprises:
The first check valve, bypass is communicated with the first source of the gas path of described hybrid chamber;
The second check valve, bypass is communicated with the second source of the gas path of described hybrid chamber;
Two-position three way magnetic valve, port of export gas circuit is communicated with the pneumatic control end of described free breather valve, and exhaust port side gas circuit is communicated with atmosphere, and arrival end bifurcated gas circuit is communicated with the outfan of the first check valve and the outfan of the second check valve; Described two-position three way magnetic valve is during without control signal or no power, and the described port of export is communicated with exhaust port side gas circuit;
Control unit, is electrically connected to the control end of described two-position three way magnetic valve, for controlling described two-position three way magnetic valve, its port of export is communicated with arrival end gas circuit; When described pneumatic control end exists gases at high pressure, described free breather valve cuts out.
According to Anti-suffocation free aspiration system of respirator provided by the invention, the first source of the gas path comprises string the first air relief valve and the first proportioning valve thereon successively; The other gas circuit of the first check valve is communicated with on the pipeline between the first air relief valve and the first proportioning valve.
According to Anti-suffocation free aspiration system of respirator provided by the invention, the second source of the gas path comprises string the second air relief valve and the second proportioning valve thereon successively; The other gas circuit of the second check valve is communicated with on the pipeline between the second air relief valve and the second proportioning valve.
Anti-suffocation free aspiration system 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 without control signal or power-off, and prior art has following advantage relatively:
1, gases at high pressure are closed free breather valve, close tight;
2, when power-off is abnormal, open free breather valve and guarantee user safety;
Even if 3 free breather valves are connected high-pressure air source, due to high-pressure air source and user respiratory gas source homology, so can not cause serious security incident yet.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, further the present invention is described in detail.
Fig. 1 is traditional free breather valve gas circuit structure schematic diagram;
Fig. 2 is the free breather valve gas circuit structure schematic diagram that Anti-suffocation free aspiration system of respirator of the present invention is set;
Fig. 3 is the schematic diagram of the anti-work that suffocates of free breather valve gas circuit shown in Fig. 2;
Fig. 4 is the schematic diagram of the normal work of free breather valve gas circuit shown in Fig. 2.
The specific embodiment
The Anti-suffocation free aspiration system of respirator of the specific embodiment of the invention, as shown in Figure 2, the free breather valve SV and the pneumatic control thereof that are communicated with hybrid chamber and atmosphere when opening partly form gas circuit structure, and wherein pneumatic control partly comprises:
(1) with the high-pressure air source of hybrid chamber source of the gas homology
The first check valve CV4, other gas circuit is communicated with the first source of the gas path of described hybrid chamber; The second check valve CV5, other gas circuit is communicated with the second source of the gas path of described hybrid chamber;
(2) control
Two-position three way magnetic valve SOV1, port of export gas circuit is communicated with the pneumatic control end of described free breather valve SV, exhaust port side is communicated with atmosphere, arrival end by 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 described pneumatic control end exists gases at high pressure, described free breather valve cuts out the path of described hybrid chamber and outside atmosphere, otherwise opens this path.
This Anti-suffocation free aspiration system of respirator also comprises 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 communicating passage, (1) as shown in Figure 3, when two-position three way magnetic valve SOV1 is during without control signal no power, free breather valve SV pneumatic control end is communicated with outside atmosphere, without high voltage control, open valve SV, user breathing pipeline is communicated with outside atmosphere through hybrid chamber; User can be inhaled the gas in outside atmosphere by free breather valve SV; (2) as shown in Figure 4, when system, control and provide signal, 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 is revealed and supplied knot user gas without outside.Guarantee like this user normal effectively use when breathing safely and working.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the claims in the present invention scope change and modify, and all should belong to the covering scope of the claims in the present invention.
Claims (3)
1. an Anti-suffocation free aspiration system of respirator, comprises the free breather valve (SV) that is communicated with hybrid chamber and atmosphere while opening, and it is characterized in that, this anti-free suction system that suffocates also comprises:
The first check valve (CV4), bypass is communicated with the first source of the gas path of described hybrid chamber;
The second check valve (CV5), bypass is communicated with the second source of the gas path of described hybrid chamber;
Two-position three way magnetic valve (SOV1), port of export gas circuit is communicated with the pneumatic control end of described free breather valve (SV), exhaust port side is communicated with atmosphere, arrival end by bifurcated respectively gas circuit be communicated with the outfan of the first check valve (CV4) and the outfan of the second check valve (CV5); Described two-position three way magnetic valve (SOV1) is during without control signal or no power, and the described port of export is communicated with exhaust port side gas circuit;
Control unit, is electrically connected to the control end of described two-position three way magnetic valve (SOV1), for controlling described two-position three way magnetic valve, its port of export is communicated with arrival end gas circuit; When described pneumatic control end exists gases at high pressure, described free breather valve cuts out.
2. Anti-suffocation free aspiration system of respirator according to claim 1, is characterized in that, the first source of the gas path comprises string the first air relief valve and the first proportioning valve thereon successively; The first check valve (CV4) bypass is communicated with the pipeline between the first air relief valve and the first proportioning valve.
3. Anti-suffocation free aspiration system of respirator according to claim 1, is characterized in that, the second source of the gas path comprises string the second air relief valve and the second proportioning valve thereon successively; The second check valve (CV5) bypass is communicated with the pipeline between the second air relief valve and the 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 CN102500025A (en) | 2012-06-20 |
| CN102500025B true 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 (6)
| 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***股份有限公司 | Multifunctional safety valve |
| CN101618246A (en) * | 2008-07-02 | 2010-01-06 | 北京谊安医疗***股份有限公司 | Respirator system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101203263B (en) * | 2005-06-23 | 2012-10-24 | 瑞思迈巴黎公司 | Respiratory assistance apparatus having independent assistance unit |
-
2011
- 2011-12-01 CN CN201110392433.2A patent/CN102500025B/en not_active Expired - Fee Related
Patent Citations (6)
| 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***股份有限公司 | Multifunctional safety valve |
| CN101618246A (en) * | 2008-07-02 | 2010-01-06 | 北京谊安医疗***股份有限公司 | Respirator system |
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| Publication number | Publication date |
|---|---|
| CN102500025A (en) | 2012-06-20 |
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