CN104874085B - The self checking method and ventilator of oxygen solenoid valve for ventilator - Google Patents
The self checking method and ventilator of oxygen solenoid valve for ventilator Download PDFInfo
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- CN104874085B CN104874085B CN201410073848.7A CN201410073848A CN104874085B CN 104874085 B CN104874085 B CN 104874085B CN 201410073848 A CN201410073848 A CN 201410073848A CN 104874085 B CN104874085 B CN 104874085B
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Abstract
The present invention proposes a kind of self checking method of oxygen solenoid valve for ventilator, wherein oxygen solenoid valve is for controlling oxygen-supplying amount, and oxygen solenoid valve includes first kind oxygen solenoid valve, the second class oxygen solenoid valve and third class oxygen solenoid valve, and this approach includes the following steps：Open first to third class oxygen solenoid valve any one；After preset time is stablized in first to third class oxygen solenoid valve any one unlatching and the inspiratory flow rate of ventilator, the oxygen concentration of ventilator is obtained；According to the type for the oxygen solenoid valve that oxygen concentration judgement is opened.Method of the invention can accurately detect whether the installation site of oxygen solenoid valve in ventilator is correct, improve the safety of ventilator, and this method is easy to operate, is easily achieved.The present invention also provides a kind of ventilators.
Description
Technical field
The present invention relates to Medical Devices manufacturing technology field, in particular to the self-test of a kind of oxygen solenoid valve for ventilator
Method and ventilator.
Background technique
Solenoid valve is a kind of device by electric control, and energization is switched on, and gas flows to the other end by one end of solenoid valve, is broken
Electricity is shut off, and air-flow also just stops circulation.Oxygen solenoid valve in ventilator be for controlling oxygen concentration, unlatching just have oxygen into
Enter ventilator.
Generally, ventilator may need the oxygen solenoid valve using different flow, but the volume of oxygen solenoid valve according to its demand
Size all, is difficult to differentiate between from appearance, if the installation site mistake of the oxygen solenoid valve of different flow, it will cause ventilators
Oxygen concentration controls mistake, and there are security risks.Therefore, ventilator, which carries out self-test to its oxygen solenoid valve before on probation, seems especially heavy
It wants, directly determines the control precision of oxygen concentration, however, there is presently no relatively simple, accurate methods to realize electromagnetism
The self-test of valve.
Summary of the invention
The present invention is directed at least solve one of above-mentioned technical problem.
For this purpose, an object of the present invention is to provide a kind of self checking method of oxygen solenoid valve for ventilator, the party
Method can accurately detect whether the installation site of oxygen solenoid valve in ventilator is correct, improve the safety of ventilator, and should
Method is easy to operate, it is easy to accomplish.
Second object of the present invention is to provide a kind of ventilator.
To achieve the goals above, the embodiment of first aspect present invention proposes a kind of oxygen solenoid valve for ventilator
Self checking method, wherein for the oxygen solenoid valve for controlling oxygen-supplying amount, the oxygen solenoid valve includes first kind oxygen solenoid valve, the
Two class oxygen solenoid valves and third class oxygen solenoid valve, the described method comprises the following steps：Described first is opened to third class oxygen electromagnetism
Any one of valve；Described first to third class oxygen solenoid valve any one open and the ventilator inspiratory flow rate it is steady
After determining preset time, the oxygen concentration of the ventilator is obtained；According to the class for the oxygen solenoid valve that oxygen concentration judgement is opened
Type.
The self checking method of oxygen solenoid valve according to an embodiment of the present invention for ventilator, the solenoid valve are divided into first to
Three classes oxygen solenoid valve, by any one of unlatching first to third class oxygen solenoid valve, and after the unlatching of any one solenoid valve
The inspiratory flow rate for controlling ventilator is stablized in some value, after preset time, obtains the oxygen concentration of ventilator at this time, and according to
The type for the oxygen solenoid valve that oxygen concentration judgement is opened.To, the oxygen solenoid valve for ventilator of the embodiment of the present invention oneself
Detecting method can accurately detect whether the installation site of oxygen solenoid valve in ventilator is correct, avoid installing due to oxygen solenoid valve
Positional fault and cause ventilator oxygen concentration control mistake, improve the safety of ventilator, and this method is easy to operate, be easy to
It realizes.
In addition, the self checking method of the oxygen solenoid valve according to the above embodiment of the present invention for ventilator can also have as
Under additional technical characteristic：
In some instances, described first to third class oxygen solenoid valve when being separately turned on, and the ventilator is in the unit time
Interior oxygen-supplying amount is different.
In some instances, the type of the oxygen solenoid valve opened according to oxygen concentration judgement, is further wrapped
It includes：If the oxygen concentration is located at the first preset range, judge the oxygen solenoid valve opened for first kind oxygen solenoid valve；Such as
Oxygen concentration described in fruit is located at the second preset range, then judges the oxygen solenoid valve opened for the second class oxygen solenoid valve；If institute
It states oxygen concentration and is located at third preset range, then judge the oxygen solenoid valve opened for third class oxygen solenoid valve, wherein described the
The upper limit value of one preset range is less than the lower limit value of second preset range, and the upper limit value of second preset range is less than institute
State the lower limit value of third preset range.
In some instances, after the oxygen concentration for obtaining the ventilator, further include：It is opened according to oxygen concentration judgement
The oxygen solenoid valve opened whether there is failure.
In some instances, the oxygen solenoid valve opened according to oxygen concentration judgement whether there is failure, into
One step includes：If the oxygen concentration is equal to the first preset value, judge that there are failures for the oxygen solenoid valve opened.
The embodiment of second aspect of the present invention additionally provides a kind of ventilator, including：Oxygen solenoid valve, the oxygen solenoid valve are used
In control oxygen-supplying amount, the oxygen solenoid valve includes first kind oxygen solenoid valve, the second class oxygen solenoid valve and third class oxygen solenoid valve；It inhales
Gas velocity sensor, the inspiratory flow rate sensor are used to detect the inspiratory flow rate of the ventilator；Oxygen concentration sensor, it is described
Oxygen concentration sensor is used to detect the oxygen concentration of the ventilator；Controller, the controller is for opening described first to the
Any one of the oxygen solenoid valve of three classes, and described first to third class oxygen solenoid valve any one open and control described in
After the inspiratory flow rate of ventilator stablizes preset time, according to the oxygen solenoid valve of the oxygen concentration of ventilator judgement unlatching
Type.
Ventilator according to an embodiment of the present invention, controller are any one by unlatching first to third class oxygen solenoid valve
Kind, and the inspiratory flow rate of control ventilator is stablized in some value, after preset time, oxygen after the unlatching of any one solenoid valve
Concentration sensor obtains the oxygen concentration of ventilator at this time, the type for the oxygen solenoid valve that controller is opened according to oxygen concentration judgement.
To which the ventilator of the embodiment of the present invention can accurately detect whether the installation site of oxygen solenoid valve is correct, avoids due to oxygen
Solenoid valve installation site mistake and cause ventilator oxygen concentration control mistake, improve safety, and the ventilator-structure is simple,
It is easy to use.
In addition, ventilator according to the above embodiment of the present invention can also have following additional technical characteristic：
In some instances, described first to third class oxygen solenoid valve when being separately turned on, and the ventilator is in the unit time
Interior oxygen-supplying amount is different.
In some instances, the controller is used for when the oxygen concentration is located at the first preset range, judges unlatching
The oxygen solenoid valve is first kind oxygen solenoid valve, and when the oxygen concentration is located at the second preset range, judges to open described
Oxygen solenoid valve is the second class oxygen solenoid valve, and when the oxygen concentration is located at the second preset range, judges the oxygen opened
Solenoid valve is third class oxygen solenoid valve, wherein the upper limit value of first preset range is less than under second preset range
Limit value, the upper limit value of second preset range are less than the lower limit value of the third preset range.
In some instances, whether the controller is also used to judge according to the oxygen concentration oxygen solenoid valve opened
There are failures.
In some instances, the controller is used to judge the unlatching when the oxygen concentration is equal to the first preset value
The oxygen solenoid valve there are failures.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the self checking method of the oxygen solenoid valve according to an embodiment of the invention for ventilator；With
And
Fig. 2 is the structural block diagram of ventilator according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Referring to following description and drawings, it will be clear that these and other aspects of the embodiment of the present invention.In these descriptions
In attached drawing, some particular implementations in the embodiment of the present invention are specifically disclosed, to indicate to implement implementation of the invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, of the invention
Embodiment includes all changes, modification and the equivalent fallen within the scope of the spirit and intension of attached claims.
The self checking method of the oxygen solenoid valve according to an embodiment of the present invention for ventilator is described below in conjunction with attached drawing and is
System.
Fig. 1 is the flow chart of the self checking method of the oxygen solenoid valve according to an embodiment of the invention for ventilator.Such as
Shown in Fig. 1, the self checking method of the oxygen solenoid valve according to an embodiment of the invention for ventilator, wherein oxygen solenoid valve is used
In control oxygen-supplying amount, oxygen solenoid valve includes first kind oxygen solenoid valve, the second class oxygen solenoid valve, third class oxygen solenoid valve.Including with
Lower step：
Step S101, open first to third class oxygen solenoid valve any one.Wherein, in one embodiment of the present of invention
In, when first to third class oxygen solenoid valve is separately turned on, oxygen-supplying amount of the ventilator within the unit time is different.Have as one
The example of body, such as：The flow of first kind oxygen solenoid valve is 4LPM（Liter/min）, the flow of the second class oxygen solenoid valve is 12LPM,
The flow of third class oxygen solenoid valve is 30LPM.In other words, when first kind oxygen solenoid valve is opened, ventilator is in the unit time
（Refer to 1 minute）The oxygen-supplying amount obtained is 4L, and when the second class oxygen solenoid valve is opened, ventilator is in the unit time（1 minute）Interior confession
Oxygen amount is 12L, and when third class solenoid valve is opened, ventilator is in the unit time（1 minute）Interior oxygen-supplying amount is 30L.
Step S102, any one first to third class oxygen solenoid valve is opened and the inspiratory flow rate of ventilator stablize it is pre-
If after the time, obtaining the oxygen concentration of ventilator.
Specifically, oxygen can be with air mixing, warp i.e. after opening the first any one to third class oxygen solenoid valve
The inspiratory flow rate sensor of ventilator is crossed, then enters the lung of patient by pipeline.Due to the oxygen concentration sensor of ventilator
Installation site guarantees that gas is introduced into flow sensor, passes through oxygen concentration again after mixing in the rear end of inspiratory flow rate sensor
Sensor sample.Therefore, open oxygen can be judged by the sampled value of inspiratory flow rate sensor and the sampled value of lambda sensor
The type of solenoid valve.In this example, such as by the switching value size of control proportioning valve the flow velocity of flow sensor is adjusted
Size after a preset time lapses, can be passed so that inspiratory flow rate be made to stablize in some value, for example, 50LPM by oxygen concentration
The oxygen concentration of sensor acquisition at this time.Wherein, preset time is set according to actual needs, and in this example, preset time is for example
It is 3-5 seconds.
Step S103, according to the type for the oxygen solenoid valve that oxygen concentration judgement is opened.Acquired according in above-mentioned steps S102
Obtained oxygen concentration come judge open oxygen solenoid valve type.It specifically includes：If oxygen concentration is located at the first preset range,
Judge the oxygen solenoid valve opened for first kind oxygen solenoid valve（In this example, i.e., flow be 4LPM oxygen solenoid valve）.If oxygen
Concentration is located at the second preset range, then judges the oxygen solenoid valve opened for the second class oxygen solenoid valve（In this example, i.e., flow is
The oxygen solenoid valve of 12LPM）.If oxygen concentration is located at third preset range, judge the oxygen solenoid valve opened for third class oxygen electricity
Magnet valve（In this example, i.e., flow be 30LPM oxygen solenoid valve）, wherein the upper limit value of the first above-mentioned preset range is less than
The lower limit value of second preset range, the upper limit value of the second preset range are less than the lower limit value of third preset range.
Flow as a specific example, such as first kind oxygen solenoid valve is 4LPM, the stream of the second class oxygen solenoid valve
Amount is 12LPM, and the flow of third class oxygen solenoid valve is 30LPM, and is stablized in 50LPM, then by proportional valve control inspiratory flow rate
Open the first kind oxygen solenoid valve when theoretical oxygen concentration sampled value be（4+50*0.21）/ 50=0.29=29%, and set first and take
Value range is 26%-32%.Similarly, theoretical oxygen concentration sampled value when the second class oxygen solenoid valve of unlatching is（50*0.21+12）/50=
0.45=45%, and the second value range is set as 42%-48%.Similarly, theoretical oxygen concentration when opening third class oxygen solenoid valve is adopted
Sample value is 50*0.21+30）/ 50=0.81=81%, and third value range is set as 78%-84%.
To when the value of the practical oxygen concentration of the ventilator of acquisition is located at（26%-32%）Between when, then judge to open at this time
Oxygen solenoid valve be first kind oxygen solenoid valve, i.e., flow be 4LPM oxygen solenoid valve.When the practical oxygen concentration of the ventilator of acquisition
Value be located at（42%-48%）Between when, then judge the oxygen solenoid valve opened at this time as the second class oxygen solenoid valve.When the breathing of acquisition
The value of the practical oxygen concentration of machine is located at（78%-84%）Between when, then judge the oxygen solenoid valve opened at this time as that class of third oxygen electricity
Magnet valve.To according to above-mentioned judgment method, before using ventilator, carry out self-test to ventilator, judge all kinds of oxygen electricity
Whether the installation site of magnet valve is correct, if installation site mistake（Such as the oxygen solenoid valve of 12LPM is mounted on to the oxygen electricity of 4LPM
On the position of magnet valve）, then fail self-test can be prompted, and show the prompt information of valve setup error, to facilitate user to adjust in time,
So as to avoid causing because of oxygen solenoid valve installation site mistake oxygen concentration from controlling mistake, the safety of ventilator is improved.
Further, in one embodiment of the invention, in above-mentioned steps S103 obtain ventilator oxygen concentration it
Afterwards, further include：It whether there is failure according to the oxygen solenoid valve that oxygen concentration judgement is opened.Specifically, if oxygen concentration is equal to the
One preset value then judges that there are failures for the oxygen solenoid valve opened.
As a specific example, during Use of respirator, it is assumed that oxygen solenoid valve has been had already turned on, but if oxygen
Solenoid valve breaks down, that is, oxygen solenoid valve is still not switched on after being powered, then will lead to oxygen concentration control mistake.When the event of oxygen solenoid valve
It when barrier, can not be supplied oxygen in ventilator, therefore, the value of the oxygen concentration of ventilator can maintain 21%（That is the first preset value）Left and right.Cause
This then judges oxygen solenoid valve failure at this time when the value of the oxygen concentration detected is 21%（It is not opened after oxygen solenoid valves
It opens）.Further, software can prompt fail self-test, and prompt to send information alert user oxygen solenoid valve failure, to tie up in time
It repairs or replaces.
In conclusion in a specific embodiment, for example, first by three flows be respectively 4LPM, 12LPM and
In the oxygen solenoid valve installation in correct position of 30LPM, then start self-check program, and the present invention according to foregoing description is implemented
The method of example carries out self-test, finally can self-test success.And if the plug wire of wherein some oxygen solenoid valve pulled out, then again
Starting self-test can prompt fail self-test then when detecting the oxygen solenoid valve, and show that valve is not turned on, i.e. the oxygen solenoid valve
Failure.In addition, deliberately the installation site of oxygen solenoid valve can be adjusted（Such as the valve of 30LPM is mounted on to the position of the valve of 4LPM
It is first-class）, restart self-check program, then can prompt fail self-test quickly, and show valve installation error message.To staff
It can be according to self-test prompt information, on-call maintenance or replacement oxygen solenoid valve, with the normal use for the machine of ensuring respiration.
The self checking method of oxygen solenoid valve according to an embodiment of the present invention for ventilator, the solenoid valve are divided into first to
Three classes oxygen solenoid valve, by any one of unlatching first to third class oxygen solenoid valve, and after the unlatching of any one solenoid valve
The inspiratory flow rate for controlling ventilator is stablized in some value, after preset time, obtains the oxygen concentration of ventilator at this time, and according to
The type for the oxygen solenoid valve that oxygen concentration judgement is opened.In addition, can also judge whether the oxygen solenoid valve opened is deposited according to oxygen concentration
In failure, and fault message can be prompted to user.To the self-test of the oxygen solenoid valve for ventilator of the embodiment of the present invention
Method, can accurately detect whether the installation site of oxygen solenoid valve in ventilator correct and oxygen solenoid valve with the presence or absence of therefore
Barrier is avoided causing ventilator oxygen concentration to control mistake due to oxygen solenoid valve installation site mistake and oxygen solenoid valve failure, be mentioned
The high safety of ventilator, and this method is easy to operate, it is easy to accomplish.
The present invention also provides a kind of ventilators.
Fig. 2 is the structural block diagram of ventilator according to an embodiment of the invention.As shown in Fig. 2, one according to the present invention
The ventilator 200 of embodiment, including：Oxygen solenoid valve 210, inspiratory flow rate sensor 220, oxygen concentration sensor 230 and controller
240。
Wherein, oxygen solenoid valve 210 is for controlling oxygen-supplying amount.Oxygen solenoid valve 210 includes first kind oxygen solenoid valve 211, second
Class oxygen solenoid valve 212 and third class oxygen solenoid valve 213（It is not shown in Fig. 2）.
Inspiratory flow rate sensor 220 is used to detect the inspiratory flow rate of ventilator 200.
Oxygen concentration sensor 230 is used to detect the oxygen concentration of ventilator 200.
Controller 240 be used to open first to third class oxygen solenoid valve any one, and first to third class oxygen
After the stable preset time of inspiratory flow rate of ventilator 200 is opened and controlled to any one of solenoid valve, according to the oxygen of ventilator 200
The type for the oxygen solenoid valve that concentration judgement is opened.Wherein, in one embodiment of the invention, when first to third class oxygen electromagnetism
When valve is separately turned on, oxygen-supplying amount of the ventilator 200 within the unit time is different.As a specific example, such as：The first kind
The flow of oxygen solenoid valve 211 is 4LPM（Liter/min）, the flow of the second class oxygen solenoid valve 212 is 12LPM, third class oxygen solenoid valve
213 flow is 30LPM.In other words, when first kind oxygen solenoid valve 211 is opened, ventilator 200 is in the unit time（Refer to 1 point
Clock）Interior oxygen-supplying amount is 4L, and when the second class oxygen solenoid valve 212 is opened, ventilator 200 is in the unit time（1 minute）Interior confession
Oxygen amount is 12L, and when third class solenoid valve 213 is opened, ventilator 200 is in the unit time（1 minute）Interior oxygen-supplying amount is 30L.
Specifically, oxygen can pass through with air mixing after opening the first any one to third class oxygen solenoid valve
The inspiratory flow rate sensor 220 of ventilator 200, then enter by pipeline the lung of patient.Due to the peace of oxygen concentration sensor 230
Holding position guarantees that gas is introduced into flow sensor 220, passes through oxygen again after mixing in the rear end of inspiratory flow rate sensor 220
Concentration sensor 230 samples.Therefore, can by the sampled value of inspiratory flow rate sensor 220 and the sampled value of lambda sensor 230 come
Judge the type for the oxygen solenoid valve 210 opened.In this example, such as the switching value size by controlling proportioning valve flows to adjust
The flow velocity size of fast sensor 220 is passing through preset time so that inspiratory flow rate be made to stablize in some value, for example, 50LPM
Afterwards, oxygen concentration at this time can be acquired by oxygen concentration sensor 230.Wherein, preset time is set according to actual needs,
In this example, preset time is, for example, 3-5 seconds.
In the examples described above, controller 240 is used for when oxygen concentration is located at the first preset range, judges the oxygen electromagnetism opened
Valve is first kind oxygen solenoid valve 211（In this example, i.e., flow be 4LPM oxygen solenoid valve）, and it is located at second in advance in oxygen concentration
If when range, judging the oxygen solenoid valve opened for the second class oxygen solenoid valve 212（In this example, i.e., flow is electric for the oxygen of 12LPM
Magnet valve）, and when oxygen concentration is located at the second preset range, judge the oxygen solenoid valve opened for third class oxygen solenoid valve 213（?
In this example, i.e., flow be 30LPM oxygen solenoid valve）, wherein the upper limit value of the first preset range is less than the second preset range
Lower limit value, the upper limit value of the second preset range are less than the lower limit value of third preset range.
Flow as a specific example, such as first kind oxygen solenoid valve 211 is 4LPM, the second class oxygen solenoid valve
212 flow is 12LPM, and the flow of third class oxygen solenoid valve 213 is 30LPM, and is stablized by proportional valve control inspiratory flow rate
In 50LPM, then theoretical oxygen concentration sampled value when controller 240 opens first kind oxygen solenoid valve 211 is（4+50*0.21）/50=
0.29=29%, and the first value range is set as 26%-32%.Similarly, when second class oxygen solenoid valve 212 of the unlatching of controller 240
Theoretical oxygen concentration sampled value is（50*0.21+12）/ 50=0.45=45%, and the second value range is set as 42%-48%.Similarly,
Theoretical oxygen concentration sampled value when controller 240 opens third class oxygen solenoid valve 213 is 50*0.21+30）/ 50=0.81=81%,
And third value range is set as 78%-84%.
To when the value of the practical oxygen concentration of the ventilator 200 of acquisition is located at（26%-32%）Between when, then controller 240
Judge the oxygen solenoid valve opened at this time as first kind oxygen solenoid valve 211, i.e., flow be 4LPM oxygen solenoid valve.When the breathing of acquisition
The value of the practical oxygen concentration of machine 200 is located at（42%-48%）Between when, then controller 240 judges that the oxygen solenoid valve opened at this time is
Second class oxygen solenoid valve 212.When the value of the practical oxygen concentration of the ventilator 200 of acquisition is located at（78%-84%）Between when, then control
Device 240 judges the oxygen solenoid valve opened at this time as third class oxygen solenoid valve 213.To, the above-mentioned ventilator 200 of the present invention,
Before use, progress self-test first judges whether the installation site of all kinds of oxygen solenoid valves is correct, if installation site mistake
（Such as the oxygen solenoid valve of 12LPM is mounted on the position of oxygen solenoid valve of 4LPM）, then fail self-test can be prompted, and show valve
The prompt information of setup error, to facilitate user to adjust in time, so as to avoid leading because of oxygen solenoid valve installation site mistake
It causes oxygen concentration to control mistake, improves the safety of ventilator.
Further, in another embodiment of the present invention, controller 240 is also used to be judged to open according to oxygen concentration
Oxygen solenoid valve whether there is failure.More specifically, controller 240 is used for when oxygen concentration is equal to the first preset value, and judgement is opened
There are failures for the oxygen solenoid valve opened.
As a specific example, in 200 use process of ventilator, it is assumed that oxygen solenoid valve 210 has been had already turned on, but
If oxygen solenoid valve 210 breaks down, that is, oxygen solenoid valve 210 is still not switched on after being powered, then will lead to oxygen concentration control mistake.
And can not be supplied oxygen when oxygen 210 failure of solenoid valve, in ventilator 200, therefore, the value of the oxygen concentration of ventilator 200 can maintain
21%（That is the first preset value）Left and right.Therefore, when the value of the oxygen concentration detected is 21%, then controller 240 judges oxygen at this time
210 failure of solenoid valve（It is not turned on after oxygen solenoid valves）.Further, software can prompt fail self-test, and prompt to send
Information alert user's oxygen solenoid valve failure, so as to on-call maintenance or replacement.
In conclusion in a specific embodiment, such as be respectively by three flows in ventilator 200 first
4LPM, 12LPM and 30LPM oxygen solenoid valve installation in correct position on, then start self-check program, finally can self-test at
Function.And if the plug wire of wherein some oxygen solenoid valve pulled out, then restart self-test, then when detecting the oxygen solenoid valve
When, fail self-test can be prompted, and show that valve is not turned on, i.e. the oxygen solenoid valve failure.In addition, can be deliberately by the peace of oxygen solenoid valve
Holding position adjustment（Such as the valve of 30LPM is mounted on 4LPM valve position on etc.）, restart self-check program, then can mention quickly
Show fail self-test, and shows valve installation error message.To which, staff can be according to self-test prompt information, on-call maintenance or more
Oxygen solenoid valve is changed, with the normal use of the machine of ensuring respiration 200.
Ventilator according to an embodiment of the present invention, controller are any one by unlatching first to third class oxygen solenoid valve
Kind, and the inspiratory flow rate of control ventilator is stablized in some value, after preset time, oxygen after the unlatching of any one solenoid valve
Concentration sensor obtains the oxygen concentration of ventilator at this time, the type for the oxygen solenoid valve that controller is opened according to oxygen concentration judgement.
In addition, controller can also according to oxygen concentration judge open oxygen solenoid valve whether there is failure, and can prompt fault message to
User.To, the ventilator of the embodiment of the present invention, can accurately detect oxygen solenoid valve installation site whether correct and oxygen
Solenoid valve whether there is failure, avoid leading to ventilator oxygen due to oxygen solenoid valve installation site mistake and oxygen solenoid valve failure
Concentration controls mistake, improves safety, and the ventilator-structure is simple, easy to use.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is by claim and its equivalent limits.
Claims (10)
1. a kind of self checking method of the oxygen solenoid valve for ventilator, which is characterized in that the oxygen solenoid valve is for controlling oxygen supply
Amount, the oxygen solenoid valve include first kind oxygen solenoid valve, the second class oxygen solenoid valve and third class oxygen solenoid valve, the method includes
Following steps：
Open described first to third class oxygen solenoid valve any one；
When any one described first to third class oxygen solenoid valve is opened and the inspiratory flow rate of the ventilator stablizes default
Between after, obtain the oxygen concentration of the ventilator；
According to the type for the oxygen solenoid valve that oxygen concentration judgement is opened.
2. the self checking method of the oxygen solenoid valve according to claim 1 for ventilator, which is characterized in that described first to
When third class oxygen solenoid valve is separately turned on, oxygen-supplying amount of the ventilator within the unit time is different.
3. the self checking method of the oxygen solenoid valve according to claim 1 for ventilator, which is characterized in that described according to institute
The type that oxygen concentration judges the oxygen solenoid valve opened is stated, further comprises：
If the oxygen concentration is located at the first preset range, judge the oxygen solenoid valve opened for first kind oxygen solenoid valve；
If the oxygen concentration is located at the second preset range, judge the oxygen solenoid valve opened for the second class oxygen solenoid valve；
If the oxygen concentration is located at third preset range, judge open the oxygen solenoid valve for third class oxygen solenoid valve,
Wherein, the upper limit value of first preset range is less than the lower limit value of second preset range, the second default model
The upper limit value enclosed is less than the lower limit value of the third preset range.
4. the self checking method of the oxygen solenoid valve according to claim 1 for ventilator, which is characterized in that described in acquisition
After the oxygen concentration of ventilator, further include：
It whether there is failure according to the oxygen solenoid valve that oxygen concentration judgement is opened.
5. the self checking method of the oxygen solenoid valve according to claim 4 for ventilator, which is characterized in that described according to institute
Stating the oxygen solenoid valve that oxygen concentration judgement is opened whether there is failure, further comprise：
If the oxygen concentration is equal to the first preset value, judge that there are failures for the oxygen solenoid valve opened.
6. a kind of ventilator, which is characterized in that including：
Oxygen solenoid valve, for the oxygen solenoid valve for controlling oxygen-supplying amount, the oxygen solenoid valve includes first kind oxygen solenoid valve, the second class
Oxygen solenoid valve and third class oxygen solenoid valve；
Inspiratory flow rate sensor, the inspiratory flow rate sensor are used to detect the inspiratory flow rate of the ventilator；
Oxygen concentration sensor, the oxygen concentration sensor are used to detect the oxygen concentration of the ventilator；
Controller, the controller be used to open described first to third class oxygen solenoid valve any one, and described the
One to third class oxygen solenoid valve any one open and control the ventilator inspiratory flow rate stablize preset time after, according to
The type for the oxygen solenoid valve that the oxygen concentration judgement of the ventilator is opened.
7. ventilator according to claim 6, which is characterized in that described first to third class oxygen solenoid valve is separately turned on
When, oxygen-supplying amount of the ventilator within the unit time is different.
8. ventilator according to claim 6, which is characterized in that the controller is used to be located at first in the oxygen concentration
When preset range, judge open the oxygen solenoid valve for first kind oxygen solenoid valve, and the oxygen concentration be located at second preset
When range, judge that the oxygen solenoid valve opened is located at the default model of third for the second class oxygen solenoid valve, and in the oxygen concentration
When enclosing, judge the oxygen solenoid valve opened for third class oxygen solenoid valve, wherein the upper limit value of first preset range is less than
The lower limit value of second preset range, the upper limit value of second preset range are less than the lower limit of the third preset range
Value.
9. ventilator according to claim 6, which is characterized in that the controller is also used to be judged according to the oxygen concentration
The oxygen solenoid valve opened whether there is failure.
10. ventilator according to claim 9, which is characterized in that the controller is used to be equal to the in the oxygen concentration
When one preset value, judging the oxygen solenoid valve of the unlatching, there are failures.
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