CN102500024B - Flow detection system of respirator - Google Patents
Flow detection system of respirator Download PDFInfo
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- CN102500024B CN102500024B CN201110392426.2A CN201110392426A CN102500024B CN 102500024 B CN102500024 B CN 102500024B CN 201110392426 A CN201110392426 A CN 201110392426A CN 102500024 B CN102500024 B CN 102500024B
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Abstract
The invention relates to a flow detection system of a respirator. The flow detection system comprises first, second, third and fourth two-position three-way electromagnetic valves (SOV2, SOV3, SOV6, SOV7), first and second electromagnetic valves (SOV4, SOV5) and a control unit, wherein an air passage at a first air inlet end of each of the two-position three-way electromagnetic valves is respectively communicated with a detection branch air passage in the two-position three-way electromagnetic valve, a second air inlet end of each of the two-position three-way electromagnetic valves is communicated with outside atmosphere, and an air outlet end of each of the two-position three-way electromagnetic valves is communicated with a detection port corresponding to a respective flow sensor; lateral air passages at the air outlet ends of the magnetic valves are communicated with a pipeline between an external detection branch interface and a second flow sensor, and the air inlet ends of the electromagnetic valves are communicated with high-pressure gas; and the control unit is used for controlling the first, the second, the third and the fourth two-position three-way electromagnetic valves to communicate with the corresponding flow sensors and the outside atmosphere for performing program zero calibration, or controlling the first and the second electromagnetic valves to open for removing water, or controlling the first, the second, the third and the fourth two-position three-way electromagnetic valves to communicate with the corresponding flow sensors and a detection air passage and closing the first and the second electromagnetic valves for flow detection.
Description
Technical field
The present invention relates to armarium, be specifically related to a kind of flow detection system of respirator.
Background technology
Tradition respirator, as shown in Figure 1, its flow quantity detecting system comprises inner detection and external detection to gas circuit structure, is made up of first flow sensor, second quantity sensor and first flow sensor probe FQ1 and second quantity sensor probe FQ2.Because this flow quantity detecting system is together with whole respirator gas circuit, be difficult to carry out routine on-line calibration.Although also can calibrate, certainly will affect normal use or the flow detection precision of respirator.On the other hand, external detection is near user, due to the cold and hot irregular inner solidifying water of second quantity sensor probe FQ2 that makes, especially detect the solidifying water of a gas circuit, cause second quantity sensor to detect inaccurate, accuracy of detection is inadequate, accurately control, and these technology also do not occur in respirator or correlation technique is not also disclosed thereby affect respirator.
Summary of the invention
The technical issues that need to address of the present invention are, how a kind of flow detection system of respirator is provided, and automatic on-line routine calibration can convenient, be promptly provided.
The above-mentioned technical problem of the present invention solves like this: build a kind of flow detection system of respirator, comprise that gas circuit is communicated with the second quantity sensor that the first flow sensor of first flow sensor probe in internal main gas circuit and gas circuit are communicated with the first outer detection branch interface and the second outer detection branch interface on respirator shell, it is characterized in that, this flow quantity detecting system also comprises:
The first two-position three way magnetic valve, its first inlet end gas circuit is communicated with first of first flow sensor probe and detects hole, and the second inlet end is communicated with outside atmosphere, and outlet side is communicated with the first detection mouthful of first flow sensor;
The second two-position three way magnetic valve, its first inlet end gas circuit is communicated with the second interior detection hole of first flow sensor probe, and the second inlet end is communicated with outside atmosphere, and outlet side is communicated with second of first flow sensor and detects mouth;
The 3rd two-position three way magnetic valve, its first inlet end gas circuit is communicated with the first outer detection branch interface, and the second inlet end is communicated with outside atmosphere, and outlet side is communicated with first of second quantity sensor and detects mouth;
The 4th two-position three way magnetic valve, its first inlet end gas circuit is communicated with the second outer detection branch interface, and the second inlet end is communicated with outside atmosphere, and outlet side is communicated with second of second quantity sensor and detects mouth;
Control unit, be electrically connected the control end of the first two-position three way magnetic valve, the control end of the second two-position three way magnetic valve, the control end of the control end of the 3rd two-position three way magnetic valve and the 4th two-position three way magnetic valve, be used for controlling the first two-position three way magnetic valve and the second two-position three way magnetic valve gas circuit connection first flow sensor and first flow sensor probe and carry out inner stream flow detection, or control the first two-position three way magnetic valve and the second two-position three way magnetic valve gas circuit and be communicated with first flow sensor and outside atmosphere, then taking outside atmosphere as datum mark, first flow sensor is carried out to program school zero, or control the 3rd two-position three way magnetic valve and the 4th two-position three way magnetic valve gas circuit connection second quantity sensor and described outer detection branch interface and carry out external flow detection, or control the 3rd two-position three way magnetic valve and the 4th two-position three way magnetic valve gas circuit and be communicated with second quantity sensor and outside atmosphere, then taking outside atmosphere as datum mark, second quantity sensor is carried out to program school zero.
According to flow detection system of respirator provided by the invention, this flow quantity detecting system also comprises:
The first electromagnetic valve, the other gas circuit in outlet side is communicated with the first pipeline detecting between mouth of the first outer detection branch interface and second quantity sensor, and inlet end is communicated with gases at high pressure;
The second electromagnetic valve, the other gas circuit in outlet side is communicated with the second pipeline detecting between mouth of the second outer detection branch interface and second quantity sensor, and inlet end is communicated with gases at high pressure;
Described control unit is also electrically connected the control end of the first electromagnetic valve and the control end of the second electromagnetic valve, also opens and utilizes described gases at high pressure to dewater and in the time that described external flow detects, control the first electromagnetic valve and the second closed electromagnetic valve for controlling the first electromagnetic valve and the second electromagnetic valve.
According to flow detection system of respirator provided by the invention, described gases at high pressure comprise dual gas supply, be communicated with high pressure oxygen by the first check valve and a corresponding gas circuit, with be communicated with pressure-air by the second check valve and corresponding gas circuit, the outfan of the outfan of the first check valve and the second check valve is interconnected and pass through same pipeline gas circuit and export.
According to flow detection system of respirator provided by the invention, described flow transducer is pressure difference sensor.
According to flow detection system of respirator provided by the invention, described control unit is also electrically connected first flow sensor and second quantity sensor.
According to flow detection system of respirator provided by the invention, described control unit is the single-chip microcomputer of built-in control sequence.
Flow detection system of respirator provided by the invention, adopts Electronic Control, and using after certain hour, do not need can flow sensor carry out automatic calibration and dewater in time of flow detection, prior art has following advantage relatively:
1, need not from machine, remove or stop normal work carries out equipment Alignment or dewaters;
2, can autotest routine, accuracy of detection is high and reliable;
3, extend flow transducer and probe service time and life-span.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, further the present invention is described in detail.
Fig. 1 is traditional respirator gas circuit structure schematic diagram;
Fig. 2 is the respirator gas circuit structure schematic diagram that flow quantity detecting system of the present invention is set.
Detailed description of the invention
The flow detection system of respirator of the specific embodiment of the invention, gas circuit structure as shown in Figure 2, on the basis of traditional flow detection system of respirator, all increase automatic calibration part in inside detection and external detection, and also increased automatic water-removing part in external detection.Wherein:
(1) automatic calibration part
Comprise four two-position three way magnetic valve SOV2, SOV3, SOV6 and SOV7 that the present invention is newly-increased, they select to be respectively communicated with first flow sensor probe FQ1 and second quantity sensor probe FQ2 separately by corresponding gas circuit first flow sensor and second quantity sensor, or connection the present invention increases the outside atmosphere of connection.When first flow sensor is communicated with second quantity sensor probe FQ2 with first flow sensor probe FQ1 connected sum second quantity sensor, carry out respectively inside and outside flow detection, first flow sensor and second quantity sensor carry out program school zero separately while being communicated with outside atmosphere.Second quantity sensor probe FQ2 is external devices, and by user's selection and when needed by two outside bronchus connection second quantity sensors, and input is communicated with the output of breathing owner gas circuit by free breather valve PEEP, and outfan gas circuit is communicated with user.
(2) automatic water-removing part
Two two-position three way magnetic valve SOV4 that comprise that the present invention increases newly and SOV5, and the high-pressure air source that forms of two check valve CV4 that increased newly by the present invention and CV5.Wherein: a selection in the two is communicated with second quantity sensor and flow transducer probe FQ2 and high-pressure air source for two two-position three way magnetic valve SOV4 and SOV5.When two-position three way magnetic valve SOV4, SOV5, SOV6 and SOV7 select to be communicated with second quantity sensor and second quantity sensor probe FQ2, carry out external flow detection, while being communicated with high-pressure air source, dewater.Two check valve CV4 and CV5 introduce high pressure oxygen or pressure-air, while work, have all the time one in high pressure oxygen and pressure-air or two kinds due to respirator, and therefore high-pressure air source can be used always.
The flow detection system of respirator of the specific embodiment of the invention also comprises circuit control section, and its flow detection principle is: in the time of normal work, control two-position three way magnetic valve SOV2, SOV3, SOV4, SOV5, SOV6 and SOV7 and be communicated with corresponding flow transducer and carry out inside or external flow detection with its detection gas circuit; Be communicated with corresponding flow transducer and outside atmosphere in normal working clearance or the time of stopping using and carry out program compared with zero or be communicated with gases at high pressure and detection gas circuit dewaters to external detection gas circuit, thus the precision of the machine flow detection that ensures respiration.
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 (6)
1. a flow detection system of respirator, comprise that gas circuit is communicated with the second quantity sensor that the first flow sensor of first flow sensor probe (FQ1) in internal main gas circuit and gas circuit are communicated with the first outer detection branch interface and the second outer detection branch interface on respirator shell, it is characterized in that, this flow quantity detecting system also comprises:
The first two-position three way magnetic valve (SOV2), its the first inlet end gas circuit is communicated with first of described first flow sensor probe (FQ1) and detects hole, the second inlet end is communicated with outside atmosphere, and outlet side is communicated with first of described first flow sensor and detects mouth;
The second two-position three way magnetic valve (SOV3), its the first inlet end gas circuit is communicated with second of described first flow sensor probe (FQ1) and detects hole, the second inlet end is communicated with outside atmosphere, and outlet side is communicated with second of described first flow sensor and detects mouth;
The 3rd two-position three way magnetic valve (SOV6), its first inlet end gas circuit is communicated with described the first outer detection branch interface, and the second inlet end is communicated with outside atmosphere, and outlet side is communicated with first of described second quantity sensor (FQ2) and detects mouth;
The 4th two-position three way magnetic valve (SOV7), its first inlet end gas circuit is communicated with described the second outer detection branch interface, and the second inlet end is communicated with outside atmosphere, and outlet side is communicated with second of described second quantity sensor (FQ2) and detects mouth;
Control unit, be electrically connected the control end of described the first two-position three way magnetic valve (SOV2), the control end of described the second two-position three way magnetic valve (SOV3), the control end of the control end of described the 3rd two-position three way magnetic valve (SOV6) and described the 4th two-position three way magnetic valve (SOV7), be used for controlling described the first two-position three way magnetic valve and described the second two-position three way magnetic valve gas circuit is communicated with described first flow sensor and described first flow sensor probe (FQ1) carries out inner stream flow detection, or control described the first two-position three way magnetic valve (SOV2) and described the second two-position three way magnetic valve (SOV3) gas circuit is communicated with described first flow sensor and outside atmosphere, then taking outside atmosphere as datum mark, described first flow sensor is carried out to program school zero, or control described the 3rd two-position three way magnetic valve (SOV6) and described the 4th two-position three way magnetic valve (SOV7) gas circuit is communicated with described second quantity sensor and described outer detection branch interface carries out external flow detection, or control described the 3rd two-position three way magnetic valve (SOV6) and described the 4th two-position three way magnetic valve (SOV7) gas circuit is communicated with described second quantity sensor and outside atmosphere, then taking outside atmosphere as datum mark, described second quantity sensor is carried out to program school zero.
2. flow detection system of respirator according to claim 1, is characterized in that, this flow quantity detecting system also comprises:
The first electromagnetic valve (SOV4), the other gas circuit in outlet side is communicated with the first pipeline detecting between mouth of described the first outer detection branch interface and described second quantity sensor, and inlet end is communicated with gases at high pressure;
The second electromagnetic valve (SOV5), the other gas circuit in outlet side is communicated with the second pipeline detecting between mouth of described the second outer detection branch interface and described second quantity sensor, and inlet end is communicated with gases at high pressure;
Described control unit is also electrically connected the control end of described the first electromagnetic valve (SOV4) and the control end of described the second electromagnetic valve (SOV5), also open and utilize described gases at high pressure to dewater for controlling described the first electromagnetic valve (SOV4) and described the second electromagnetic valve (SOV5), and control described the first electromagnetic valve and described the second closed electromagnetic valve in the time that described external flow detects.
3. flow detection system of respirator according to claim 2, it is characterized in that, described gases at high pressure comprise the input of two tunnel branches, the first via is communicated with high pressure oxygen by the first check valve (CV4) and a corresponding gas circuit, and the second tunnel is communicated with pressure-air by the second check valve (CV5) and a corresponding gas circuit; The outfan of the outfan of the first check valve (CV4) and the second check valve (CV5) is communicated with and passes through same pipeline gas circuit and export.
4. flow detection system of respirator according to claim 1, is characterized in that, described flow transducer is pressure difference sensor.
5. flow detection system of respirator according to claim 1, is characterized in that, described control unit is also electrically connected first flow sensor and second quantity sensor.
6. according to flow detection system of respirator described in claim 1 or 5, it is characterized in that, described control unit is the single-chip microcomputer of built-in control sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110392426.2A CN102500024B (en) | 2011-12-01 | 2011-12-01 | Flow detection system of respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110392426.2A CN102500024B (en) | 2011-12-01 | 2011-12-01 | Flow detection system of respirator |
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| Publication Number | Publication Date |
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| CN102500024A CN102500024A (en) | 2012-06-20 |
| CN102500024B true CN102500024B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110392426.2A Expired - Fee Related CN102500024B (en) | 2011-12-01 | 2011-12-01 | Flow detection system of respirator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874085B (en) * | 2014-02-28 | 2018-11-16 | 北京谊安医疗系统股份有限公司 | The self checking method and ventilator of oxygen solenoid valve for ventilator |
| CN104258491A (en) * | 2014-09-03 | 2015-01-07 | 南京舒普思达医疗设备有限公司 | Breathing machine sampling pipe water removing method and device |
| CN112045548B (en) * | 2020-08-24 | 2022-09-06 | 华海清科股份有限公司 | Wafer bearing device for chemical mechanical polishing and chemical mechanical polishing equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5918597A (en) * | 1998-01-15 | 1999-07-06 | Nellcor Puritan Bennett | Peep control in a piston ventilator |
| US6289890B1 (en) * | 1998-03-20 | 2001-09-18 | Valley Inspired Products, Llc | Portable rescue breathing device |
| US6892726B1 (en) * | 1998-12-08 | 2005-05-17 | Instrumentarium Corp. | Arrangement in connection with equipment used in patient care |
| CN1777454A (en) * | 2003-04-22 | 2006-05-24 | 医疗物理有限公司 | MRI/NMR-compatible,tidal volume control and measurement systems,methods,and devices for respiratory and hyperpolarized gas delivery |
| CN101312761A (en) * | 2005-09-21 | 2008-11-26 | 因诺治疗有限责任公司 | System and method of administering a pharmaceutical gas to a patient |
| 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 |
-
2011
- 2011-12-01 CN CN201110392426.2A patent/CN102500024B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5918597A (en) * | 1998-01-15 | 1999-07-06 | Nellcor Puritan Bennett | Peep control in a piston ventilator |
| US6289890B1 (en) * | 1998-03-20 | 2001-09-18 | Valley Inspired Products, Llc | Portable rescue breathing device |
| US6892726B1 (en) * | 1998-12-08 | 2005-05-17 | Instrumentarium Corp. | Arrangement in connection with equipment used in patient care |
| CN1777454A (en) * | 2003-04-22 | 2006-05-24 | 医疗物理有限公司 | MRI/NMR-compatible,tidal volume control and measurement systems,methods,and devices for respiratory and hyperpolarized gas delivery |
| CN101312761A (en) * | 2005-09-21 | 2008-11-26 | 因诺治疗有限责任公司 | System and method of administering a pharmaceutical gas to a patient |
| 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 |
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