CN104043168B - Exhalation differential pressure flow sensor automatic cleaning apparatus - Google Patents
Exhalation differential pressure flow sensor automatic cleaning apparatus Download PDFInfo
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- CN104043168B CN104043168B CN201410305529.4A CN201410305529A CN104043168B CN 104043168 B CN104043168 B CN 104043168B CN 201410305529 A CN201410305529 A CN 201410305529A CN 104043168 B CN104043168 B CN 104043168B
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- magnetic valve
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Abstract
The present invention relates to a kind of lung ventilator the exhalation differential pressure flow sensor automatic cleaning apparatus of Anesthesia machine, belong to technical field of medical instruments. this device comprises the flow sensor body being made up of tubular body, the incoming call end of flow sensor body is equipped with check valve, also comprise clean air source, tubular body middle part has radially extension the first isocon and the second isocon that two axially spaced-aparts distribute, the first isocon and the second isocon connect respectively the input of differential pressure pickup by vent line, the signal output part of differential pressure pickup connects the controlled end of the first magnetic valve and the second magnetic valve by control circuit, clean air source connects the first isocon and the second isocon through the first magnetic valve and the second magnetic valve respectively. when work, in the time that obstruction trend appears in flow sensor, differential pressure pickup changes experiencing the pressure reduction that two isocons pass, thereby by control circuit opens solenoid valve, by clean air blowback, removes in time foreign matter, keeps flow sensor as before unimpeded.
Description
Technical field
The present invention relates to a kind of lung ventilator the cleaning device of Anesthesia machine, especially a kind of lung ventilator the exhalation differential pressure flow sensor automatic cleaning apparatus of Anesthesia machine, belong to technical field of medical instruments.
Background technology
The differential pressure flow sensor of lung ventilator exhalation end is the important devices of monitoring lung ventilator working condition. But, owing to often containing more foreign matter and the larger gas of humidity in patient's expiration, therefore easily block flow sensor, it cannot normally be worked, therefore need continuous cleaning.
The current mode of keeping a public place clean is that lung ventilator flow sensor is heated, and makes the temperature of its temperature and patient exhalation air consistent, thereby avoids dewfall in flow sensor. This mode can only solve condensation trouble, but can not fundamentally eliminate the foreign matter containing in patient exhalation air, and the effect of therefore keeping a public place clean is undesirable, can not meet actual user demand.
Summary of the invention
The object of the invention is to: the problem existing for above-mentioned prior art, proposes a kind of exhalation differential pressure flow sensor automatic cleaning apparatus that can get rid of in time foreign matter and dewfall, thereby guarantee that it processes normal operating conditions all the time.
In order to reach above object, the basic technical scheme of exhalation differential pressure flow sensor automatic cleaning apparatus of the present invention is: comprise the flow sensor body being made up of tubular body, the incoming call end of described flow sensor body is equipped with check valve, in addition, also comprise clean air source, described tubular body middle part has radially extension the first isocon and the second isocon that two axially spaced-aparts distribute, described the first isocon and the second isocon connect respectively the input of differential pressure pickup by vent line, the signal output part of described differential pressure pickup connects the controlled end of the first magnetic valve and the second magnetic valve by control circuit, described clean air source connects the first isocon and the second isocon through the first magnetic valve and the second magnetic valve respectively.
When work, in the time that obstruction trend appears in flow sensor, flow changes, differential pressure pickup changes experiencing the pressure reduction that two isocons pass, thereby by control circuit opens solenoid valve, by clean air blowback, remove in time foreign matter, keep flow sensor as before unimpeded. Also can timing controlled automated cleaning.
The present invention further improves, described tubular body middle part has the first centre bore extending towards the end of breathing out from incoming call end, and from breathe out end towards incoming call end extend the second centre bore, described the first centre bore and the second centre bore respectively by first radially pore and second radially pore be communicated with the first isocon and the second isocon. This structure can reflect that the pressure reduction that changes in flow rate causes changes more sensitively.
The present invention further improves, and described clean air source connects magnetic valve by pressure-reducing valve, and described magnetic valve connects corresponding vent line by three. Like this, can regulate and control as required the pressure of clean air, simplify gas circuit structure.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the flow sensor body construction schematic diagram of one embodiment of the invention.
Fig. 2 is the C-C cutaway view of Fig. 1.
Fig. 3 is the perspective view of Fig. 1.
Fig. 4 is the side view of Fig. 1.
Fig. 5 is the A-A cutaway view of Fig. 1.
Fig. 6 is the B-B cutaway view of Fig. 1.
Fig. 7 is one embodiment of the invention schematic diagram of gas circuit.
Fig. 8 is the control circuit schematic diagram of one embodiment of the invention.
Fig. 9 is one embodiment of the invention control logic flow chart.
Detailed description of the invention
Embodiment mono-
The lung ventilator exhalation differential pressure flow sensor automatic cleaning apparatus basic structure of the present embodiment as shown in Figure 1,2,3, 4, comprise the flow sensor body being formed by tubular body 1, the incoming call end of this flow sensor body is equipped with check valve (not shown), in addition as shown in Figure 7, also comprise clean air source A. Tubular body 1 middle part has radially extension the first isocon 2 and the second isocon 3 that two axially spaced-aparts distribute. The first isocon 2 and the second isocon 3 connect respectively the input of differential pressure pickup 6 after plug-in unit part 4 by vent line 5, the signal output part of differential pressure pickup 6 connects the controlled end of the first magnetic valve 9 and the second magnetic valve 10 by the control circuit shown in Fig. 8. Clean air source A connects corresponding the first isocon 2 and the second isocon 3 through the first magnetic valve 9 and the second magnetic valve 10 by three respectively by pressure-reducing valve 11 is rear.
As Fig. 5, shown in Fig. 6, the the first centre bore 2-1 extending towards the end of breathing out from incoming call end is supported by having the first trident support 1-1 of radial spoke in tubular body 1 middle part, and support by thering is the second trident support 1-2 of radial spoke the second centre bore 3-1 extending towards incoming call end from the end of breathing out, the first centre bore 2-1 and the second centre bore 3-1 respectively by first in corresponding radial spoke radially pore 2-2 and second radially pore 3-2 be communicated with the first isocon 2 and the second isocon 3, the latus rectum of the first isocon 2 is greater than the second isocon 3, the pressure reduction change that therefore can very sensitively changes in flow rate be caused is delivered to differential pressure pickup 6.
As shown in Figure 8, intelligent device MCU wherein receives the pressure difference signal that differential pressure pickup 6 is exported to the concrete formation of control circuit, and its control output end connects the controlled end of the first magnetic valve 9 and the second magnetic valve 10 by amplification chip U6. MCU has storage device---for storing cleaning time interval, reading device---for reading pressure difference signal, the first comparison means---for judging whether timing arrives cleaning time interval, in this way, control and open the first magnetic valve and the second magnetic valve; The second comparison means---for judging whether the pressure difference of pressure difference signal reflection is less than the threshold value of setting, in this way, controls and opens the first magnetic valve and the second magnetic valve, shorten revision cleaning time interval to be scheduled to revision value simultaneously.
When work, MCU storage cleaning time interval, is receiving after pressure difference signal, judge whether timing arrives cleaning time interval, in this way, control and open the first magnetic valve and the second magnetic valve, make the gas of clean air source enter the first isocon and the second isocon, realize blowback automated cleaning; As no, judge whether the pressure difference of pressure difference signal reflection is less than the threshold value of setting, in this way, controls and opens the first magnetic valve and the second magnetic valve, realizes blowback automated cleaning, shorten revision cleaning time interval to be scheduled to revision value simultaneously; As no, continue to receive pressure difference signal.
Facts have proved, the device of the present embodiment can be used the gas (oxygen of clean sensor, air all can) after the proper parameter of decompression and current limliting arrival coincidence senser, flow sensor body automated cleaning, according to the requirement of taking the circumstances into consideration to set, MCU detects automatically, timing is clean, once and there is obstruction trend in discovery, after automated cleaning, also can automatically adjust the time parameter of setting, thereby make the medicine equipment of lung ventilator, Anesthesia machine and so on all the time in clean conditions, guarantee that it normally works.
In addition to the implementation, the present invention can also have other embodiments. All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (7)
1. an exhalation differential pressure flow sensor automatic cleaning apparatus, comprise the flow sensor body being formed by tubular body, the incoming call end of described flow sensor body is equipped with check valve, it is characterized in that: also comprise clean air source, described tubular body middle part has radially extension the first isocon and the second isocon that two axially spaced-aparts distribute, described the first isocon and the second isocon connect respectively the input of differential pressure pickup by vent line, the signal output part of described differential pressure pickup connects the controlled end of the first magnetic valve and the second magnetic valve by control circuit, described clean air source connects the first isocon and the second isocon through the first magnetic valve and the second magnetic valve respectively.
2. exhalation differential pressure flow sensor automatic cleaning apparatus according to claim 1, it is characterized in that: described tubular body middle part has the first centre bore extending towards the end of breathing out from incoming call end, and from breathe out end towards incoming call end extend the second centre bore, described the first centre bore and the second centre bore respectively by first radially pore and second radially pore be communicated with the first isocon and the second isocon.
3. exhalation differential pressure flow sensor automatic cleaning apparatus according to claim 2, is characterized in that: described clean air source connects magnetic valve by pressure-reducing valve, and described magnetic valve connects corresponding vent line by three.
4. exhalation differential pressure flow sensor automatic cleaning apparatus according to claim 3, it is characterized in that: the first centre bore that extend towards the end of breathing out from incoming call end by having the first trident stent support of radial spoke at described tubular body middle part, the second centre bore extending towards incoming call end from the end of breathing out by thering is the second trident stent support of radial spoke.
5. exhalation differential pressure flow sensor automatic cleaning apparatus according to claim 4, is characterized in that: described the first centre bore and the second centre bore respectively by first in corresponding radial spoke radially pore and second radially pore be communicated with the first isocon and the second isocon.
6. exhalation differential pressure flow sensor automatic cleaning apparatus according to claim 5, is characterized in that: the latus rectum of described the first isocon is greater than the second isocon.
7. according to the arbitrary described exhalation differential pressure flow sensor automatic cleaning apparatus of claim 1 to 6, it is characterized in that: the contained intelligent device of described control circuit has
Storage device---for storing cleaning time interval;
Reading device---for reading pressure difference signal;
The first comparison means---for judging whether timing arrives cleaning time interval, in this way, control and open the first magnetic valve and the second magnetic valve;
The second comparison means---for judging whether the pressure difference of pressure difference signal reflection is less than the threshold value of setting, in this way, controls and opens the first magnetic valve and the second magnetic valve, shorten revision cleaning time interval to be scheduled to revision value simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410305529.4A CN104043168B (en) | 2014-06-27 | 2014-06-27 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410305529.4A CN104043168B (en) | 2014-06-27 | 2014-06-27 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
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| CN104043168A CN104043168A (en) | 2014-09-17 |
| CN104043168B true CN104043168B (en) | 2016-05-04 |
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| CN201410305529.4A Active CN104043168B (en) | 2014-06-27 | 2014-06-27 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107803365B (en) * | 2016-09-09 | 2022-09-23 | 鸿富锦精密工业（深圳）有限公司 | Powder cleaning device and powder cleaning method |
| CN111772681A (en) * | 2020-07-01 | 2020-10-16 | 深圳市步锐生物科技有限公司 | Cleaning and back-blowing mechanism of handheld expired air collecting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6959610B1 (en) * | 2004-02-02 | 2005-11-01 | Bowers James R | Manual purge system for instrumentation flow element tubing |
| CN202041249U (en) * | 2011-03-02 | 2011-11-16 | 蔡玮凤 | Intelligent full-automatic reverse-blowing anti-blocking detection device |
| CN202083419U (en) * | 2011-05-26 | 2011-12-21 | 上海华强浮罗仪表有限公司 | On-line purging type Verabar flow meter |
| CN202956160U (en) * | 2012-08-10 | 2013-05-29 | 南京钢铁股份有限公司 | Automatic sweeping device of converter smoke flowmeter |
| CN203971101U (en) * | 2014-06-27 | 2014-12-03 | 计宁翔 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3845615B2 (en) * | 2002-03-12 | 2006-11-15 | アドバンス電気工業株式会社 | Flow sensor |
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- 2014-06-27 CN CN201410305529.4A patent/CN104043168B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6959610B1 (en) * | 2004-02-02 | 2005-11-01 | Bowers James R | Manual purge system for instrumentation flow element tubing |
| CN202041249U (en) * | 2011-03-02 | 2011-11-16 | 蔡玮凤 | Intelligent full-automatic reverse-blowing anti-blocking detection device |
| CN202083419U (en) * | 2011-05-26 | 2011-12-21 | 上海华强浮罗仪表有限公司 | On-line purging type Verabar flow meter |
| CN202956160U (en) * | 2012-08-10 | 2013-05-29 | 南京钢铁股份有限公司 | Automatic sweeping device of converter smoke flowmeter |
| CN203971101U (en) * | 2014-06-27 | 2014-12-03 | 计宁翔 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
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Effective date of registration: 20170829 Address after: 211100 No. 93 Sheng Cheng Xi Road, Jiangning District, Jiangsu, Nanjing Patentee after: Nanjing morning Wei medical equipment Co., Ltd. Address before: In Qinhuai You Fang Xiang District of Nanjing City, Jiangsu Province, No. 210006 57-1 Co-patentee before: Chenwei Electronic Co., Ltd., Shenzhen Patentee before: Ji Ningxiang |
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