CN203971101U - Exhalation differential pressure flow sensor automatic cleaning apparatus - Google Patents
Exhalation differential pressure flow sensor automatic cleaning apparatus Download PDFInfo
- Publication number
- CN203971101U CN203971101U CN201420356562.5U CN201420356562U CN203971101U CN 203971101 U CN203971101 U CN 203971101U CN 201420356562 U CN201420356562 U CN 201420356562U CN 203971101 U CN203971101 U CN 203971101U
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- isocon
- differential pressure
- electromagnetic valve
- cleaning apparatus
- centre bore
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- Withdrawn - After Issue
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Abstract
This utility model relate to a kind of respirator the exhalation differential pressure flow sensor automatic cleaning apparatus of anesthetic machine, belong to technical field of medical instruments.This device comprises the flow transducer body being made up of tubular body, the incoming call end of flow transducer 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 electromagnetic valve and the second electromagnetic valve by control circuit, clean air source connects the first isocon and the second isocon through the first electromagnetic valve and the second electromagnetic valve respectively.When work, in the time that obstruction trend appears in flow transducer, 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 body, keeps flow transducer as before unimpeded.
Description
Technical field
This utility model relate to a kind of respirator the cleaning device of anesthetic machine, especially a kind of respirator the exhalation differential pressure flow sensor automatic cleaning apparatus of anesthetic machine, belong to technical field of medical instruments.
Background technology
The differential pressure flow sensor of respirator exhalation end is the important devices of monitoring respirator working condition.But owing to often containing more foreign body and the larger gas of humidity in patient's expiration, therefore easy choked flow quantity sensor, cannot normally work it, therefore needs continuous clean.
The current mode of keeping a public place clean is that respirator flow transducer is heated, and makes the temperature of its temperature and patient exhalation air consistent, thereby avoids dewfall in flow transducer.This mode can only solve condensation trouble, but can not fundamentally eliminate the foreign body 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 purpose of this utility model is: 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 body 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 utility model is: comprise the flow transducer body being made up of tubular body, the incoming call end of described flow transducer 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 electromagnetic valve and the second electromagnetic valve by control circuit, described clean air source connects the first isocon and the second isocon through the first electromagnetic valve and the second electromagnetic valve respectively.
When work, in the time that obstruction trend appears in flow transducer, 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 body, keep flow transducer as before unimpeded.Also can timing controlled automated cleaning.
This utility model 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.
This utility model further improves, and described clean air source connects electromagnetic valve by air relief valve, and described electromagnetic 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, this utility model is further described.
Fig. 1 is the flow transducer body construction schematic diagram of an embodiment of this utility model.
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 embodiment schematic diagram of gas circuit of this utility model.
Fig. 8 is the control circuit schematic diagram of an embodiment of this utility model.
Fig. 9 is embodiment control logic flow chart of this utility model.
Detailed description of the invention
Embodiment mono-
The respirator 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 transducer body being formed by tubular body 1, the incoming call end of this flow transducer 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 electromagnetic valve 9 and the second electromagnetic 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 electromagnetic valve 9 and the second electromagnetic valve 10 by three respectively by air relief 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 electromagnetic valve 9 and the second electromagnetic 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 electromagnetic valve and the second electromagnetic 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 electromagnetic valve and the second electromagnetic 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 electromagnetic valve and the second electromagnetic 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 electromagnetic valve and the second electromagnetic 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 medical apparatus and instruments of respirator, anesthetic machine and so on all the time in clean conditions, guarantee that it normally works.
In addition to the implementation, this utility model 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 this utility model requirement.
Claims (6)
1. an exhalation differential pressure flow sensor automatic cleaning apparatus, comprise the flow transducer body being formed by tubular body, the incoming call end of described flow transducer 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 electromagnetic valve and the second electromagnetic valve by control circuit, described clean air source connects the first isocon and the second isocon through the first electromagnetic valve and the second electromagnetic 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 electromagnetic valve by air relief valve, and described electromagnetic 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356562.5U CN203971101U (en) | 2014-06-27 | 2014-06-27 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356562.5U CN203971101U (en) | 2014-06-27 | 2014-06-27 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203971101U true CN203971101U (en) | 2014-12-03 |
Family
ID=51968571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420356562.5U Withdrawn - After Issue CN203971101U (en) | 2014-06-27 | 2014-06-27 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203971101U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043168A (en) * | 2014-06-27 | 2014-09-17 | 计宁翔 | Automatic cleaning device of exhalation differential pressure flow sensor |
| CN110870780A (en) * | 2018-08-29 | 2020-03-10 | 深圳迈瑞生物医疗电子股份有限公司 | Computer readable storage medium, medical instrument and control method of dust removing device |
-
2014
- 2014-06-27 CN CN201420356562.5U patent/CN203971101U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043168A (en) * | 2014-06-27 | 2014-09-17 | 计宁翔 | Automatic cleaning device of exhalation differential pressure flow sensor |
| CN104043168B (en) * | 2014-06-27 | 2016-05-04 | 计宁翔 | Exhalation differential pressure flow sensor automatic cleaning apparatus |
| CN110870780A (en) * | 2018-08-29 | 2020-03-10 | 深圳迈瑞生物医疗电子股份有限公司 | Computer readable storage medium, medical instrument and control method of dust removing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160504 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |