CN104784792A - Breathing machine and moisture removing air path system thereof - Google Patents
Breathing machine and moisture removing air path system thereof Download PDFInfo
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- CN104784792A CN104784792A CN201510158968.1A CN201510158968A CN104784792A CN 104784792 A CN104784792 A CN 104784792A CN 201510158968 A CN201510158968 A CN 201510158968A CN 104784792 A CN104784792 A CN 104784792A
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- air
- differential pressure
- electromagnetic valve
- pipeline
- connecting pipe
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
Abstract
The invention relates to a breathing machine and a moisture removing air path system thereof. A first electromagnetic valve of the moisture removing air path system is installed on an air outlet pipeline communicated with the outside world. The two ends of a first monitoring pipeline and the two ends of a second monitoring pipeline are communicated with a differential pressure type flow sensor and a differential pressure generating device used for generating airflow pressure difference. An air capacitor is communicated with the first monitoring pipeline through a first connecting pipeline, communicated with the second monitoring pipeline through a second connecting pipeline, and communicated with an air source device through a third connecting pipeline. A second electromagnetic valve is arranged on the third connecting pipeline. When an air pressure value detected by a pressure sensor reaches a preset air pressure value, the second electromagnetic valve is turned off. When a patient exhales, the air capacitor exhausts air to prevent gas exhaled by the patient from flowing into the first monitoring pipeline and the second monitoring pipeline. The moisture removing air path system can effectively prevent condensed water from being generated in the monitoring pipelines, and the moisture removing process is safer.
Description
Technical field
The present invention relates to field of medical device, particularly relate to the air-channel system of a kind of respirator and vapor-removing thereof.
Background technology
The respirator used in medical treatment usually adopts external differential pressure flow sensor to carry out flow and the pressure monitoring of nearly patient end, external differential pressure flow sensor can the suction of accurate measurements patient and exhalation tidal volume, reliability is high, cost is low relative to hot wire type's flow transducer, therefore, widely use in respirator.
Due to existing employing differential pressure pick-up respirator in use, the gas that patient breathes out can enter two monitoring pipelines of flow transducer, and with a large amount of steam in breath, easily in monitoring pipeline, produce condensed water, time one is long, and condensed water can rest in monitoring pipeline, causes flow transducer to monitor inaccurate, or even damage flow transducer monitoring, cause equipment fault.And in existing solution, have and adopt the mode of heating to remove steam, prevent condensed water, also have the mode adopting high-voltage high-speed airflow to be blown away by condensed water.But above two kinds of modes all Shortcomings, the mode adding heat abstraction steam needs increase heater, and there is cost high, the feature of complex process, easily produces High Temperature.Adopt the mode that condensed water blows away by high-voltage high-speed airflow, it needs to adopt high-pressure air source, also must with one decompression pressure regulating valve, and once the switch electromagnetic valve of vapor-removing breaks down, just be equivalent to together with patient is connected directly between with high-pressure air source, guide high-pressure air source into patient, abnormally dangerous like this.
Summary of the invention
Given this, be necessary to provide a kind of can avoiding to form condensation water problem and the air-channel system of the vapor-removing of safer respirator in monitoring pipeline.
In addition, a kind of respirator of the air-channel system containing above-mentioned vapor-removing is also provided.
An air-channel system for the vapor-removing of respirator, comprising:
Compressed air source unit, for providing source of the gas;
Differential pressure generating, for generation of air-flow differential, described differential pressure generating is communicated with described compressed air source unit by pipeline, described differential pressure generating is also connected with the corrugated hose supplying patient respiratory and the outlet pipe be in communication with the outside;
First electromagnetic valve, is installed on described outlet pipe, is communicated with extraneous for controlling described outlet pipe;
Differential pressure flow sensor, for monitoring gas flow during patient respiratory;
First monitoring pipeline, two ends are communicated with differential pressure flow sensor with described differential pressure generating respectively;
Second monitoring pipeline, two ends are communicated with differential pressure flow sensor with described differential pressure generating respectively;
Air-capacitor, monitors pipeline communication by the first connecting pipe and described first, monitors pipeline communication by the second connecting pipe and described second, is communicated with described compressed air source unit by the 3rd connecting pipe;
Second electromagnetic valve, is arranged in described 3rd connecting pipe, blocks for the connected sum controlling described 3rd connecting pipe;
Pressure transducer, be arranged on described first monitoring pipeline or described second monitoring pipeline, described pressure transducer is for detecting the atmospheric pressure value in described differential pressure generating;
Circuit control unit, all be electrically connected with described differential pressure flow sensor, described first electromagnetic valve, described second electromagnetic valve and described pressure transducer, described circuit control unit controls the opening and closing of described first electromagnetic valve and described second electromagnetic valve, and described circuit control unit is provided with the preset pressure value that an atmospheric pressure value detected with described pressure transducer compares;
Wherein, when the atmospheric pressure value that described pressure transducer detects reaches described preset pressure value, described second closed electromagnetic valve; As described patient expiration, described air-capacitor venting is with the first monitoring pipeline described in the gas flow stoping patient to breathe out and described second monitoring pipeline.
Wherein in an embodiment, also comprise:
First constriction, is arranged in described first connecting pipe;
Second constriction, is arranged in described second connecting pipe;
Wherein, described first constriction and described second constriction are for limiting the speed of described air-capacitor venting.
Wherein in an embodiment, described first constriction is vapour lock or choke valve.
Wherein in an embodiment, described second constriction is vapour lock or choke valve.
Wherein in an embodiment, also comprise the 3rd electromagnetic valve for calibrating described differential pressure flow sensor and the 4th electromagnetic valve, described 3rd electromagnetic valve is arranged on described first monitoring pipeline, and is electrically connected with described circuit control unit; Described 4th electromagnetic valve is arranged on described second monitoring pipeline, and is electrically connected with described circuit control unit.
Wherein in an embodiment, described pressure transducer is between described first connecting pipe and described differential pressure flow sensor; Or described pressure transducer is between described second connecting pipe and described differential pressure flow sensor.
Wherein in an embodiment, described compressed air source unit is turbofan or high-pressure air source assembly.
Wherein in an embodiment, also comprise the air pressure control piece be arranged on the pipeline connecting described compressed air source unit and described differential pressure generating, and described air pressure control piece is between described compressed air source unit and described differential pressure generating.
Wherein in an embodiment, described air pressure control piece is pressure limiting valve or free inlet valve.
A kind of respirator, comprises the air-channel system of the vapor-removing of above-mentioned respirator.
In the course of the work, patient passes through corrugated hose air-breathing to the air-channel system of above-mentioned vapor-removing, now, first closed electromagnetic valve, second electromagnetic valve is opened, and compressed air source unit provides source of the gas to patient, and the source of the gas that compressed air source unit provides is delivered to patient through differential pressure generating, simultaneously, because the second electromagnetic valve opens, compressed air source unit also enters into air-capacitor by the 3rd connecting pipe simultaneously, inflates to air-capacitor, when the atmospheric pressure value in differential pressure generating reaches preset pressure value, the second closed electromagnetic valve, as the patient exhales, first electromagnetic valve is opened, outlet pipe communicates with the external world, along with patient expiration, air-flow in differential pressure generating flows to extraneous from outlet pipe, atmospheric pressure value in differential pressure generating is diminished, when being less than the atmospheric pressure value in air-capacitor when the atmospheric pressure value in differential pressure generating, air-capacitor starts venting, gas in air-capacitor is by the first connecting pipe and the second connecting pipe, again respectively through the first monitoring pipeline and the second monitoring pipeline flow-direction differential pressure generating, namely form the air-flow from the first monitoring pipeline to differential pressure generating respectively and monitor the air-flow of pipeline to differential pressure generating from second, the air flow direction in differential pressure generating first is prevented to monitor pipeline and the second monitoring pipeline, namely the process dewatered is just while patient expiration, condensed water in the steam preventing patient to breathe out and differential pressure generating enters into the first monitoring pipeline and the second monitoring pipeline, efficiently avoid and form condensation water problem in the first monitoring pipeline and the second monitoring pipeline, the method that the mode heated with traditional use removes steam and adopt high-voltage high-speed airflow to be blown away by condensed water mode compared with, the removal process of the air-channel system of above-mentioned steam and the respiratory of patient adapt, what adopt is the respiratory control of patient, more safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air-channel system of the vapor-removing of the respirator of an embodiment.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.
As shown in Figure 1, the respirator of an embodiment, comprises the air-channel system 100 of vapor-removing.The air-channel system 100 of this vapor-removing comprises compressed air source unit 110, differential pressure generating 120, first electromagnetic valve 130, the monitoring of differential pressure flow sensor 140, first monitoring pipeline 150, second pipeline 160, air-capacitor 170, second electromagnetic valve 180, pressure transducer 190 and circuit control unit (not shown).
Compressed air source unit 110 is for providing source of the gas.Concrete, compressed air source unit 110 is turbofan or high-pressure air source assembly.When compressed air source unit 110 is turbofan, turbofan by air intake in respirator.When compressed air source unit 110 is high-pressure air source assembly, when this high-pressure air source assembly comprises the gas cylinder that high-pressure air source is housed and the flow control electromagnetic valve be connected with gas cylinder, control by flow control electromagnetic valve the flow velocity entering source of the gas.
Differential pressure generating 120 is for generation of air-flow differential.Differential pressure generating 120 is communicated with compressed air source unit 110 by pipeline.Differential pressure generating 120 is connected with the corrugated hose 122 supplying patient respiratory and the outlet pipe 124 be in communication with the outside.Specifically in the illustrated embodiment in which, outlet pipe 124 is arranged at and connects differential pressure generating 120 with on the pipeline of compressed air source unit 110.Wherein, differential pressure generating 120 can be a differential pressure flow sensor, is namely the equal of an external differential pressure flow sensor, and now, outlet pipe 124 is arranged on and connects differential pressure generating 120 with on the pipeline of compressed air source unit 110.
Further, the air-channel system 100 of vapor-removing also comprises the air pressure control piece 210 be arranged on the pipeline connecting compressed air source unit 110 and differential pressure generating 120, and air pressure control piece 210 is between compressed air source unit 110 and differential pressure generating 120.The air pressure of air pressure control piece 210 on the pipeline controlling compressed air source unit 110 and differential pressure generating 120.Wherein, air pressure control piece 210 is pressure limiting valve or free inlet valve.
First electromagnetic valve 130 is installed on outlet pipe 124, is communicated with extraneous for controlling outlet pipe 124.Wherein, when the patient inhales, the first electromagnetic valve 130 cuts out, and makes the air-flow in air-channel system not flow to the external world; As the patient exhales, the first electromagnetic valve 130 is opened, and now, outlet pipe 124 communicates with the external world, and air-flow flows to the external world through differential pressure generating 120 to outlet pipe 124.
Differential pressure flow sensor 140 is for monitoring gas flow during patient respiratory.
The two ends of the first monitoring pipeline 150 are communicated with differential pressure flow sensor 140 with differential pressure generating 120 respectively.
The two ends of the second monitoring pipeline 160 are communicated with differential pressure flow sensor 140 with differential pressure generating 120 respectively.
Wherein, gas flow when differential pressure flow sensor 140 monitors patient respiratory by the air-flow differential of monitoring in the first monitoring pipeline 150 and the second monitoring pipeline 160.
Further, the air-channel system 100 of vapor-removing also comprises the 3rd electromagnetic valve 220 for calibrating differential pressure flow sensor 140 and the 4th electromagnetic valve the 230, three electromagnetic valve 220 is arranged on the first monitoring pipeline 150; 4th electromagnetic valve 230 is arranged on the second monitoring pipeline 160.
The effect arranging the 3rd electromagnetic valve 220 and the 4th electromagnetic valve 230 respectively on the first monitoring pipeline 150 and the second monitoring pipeline 160 is: when there is drift at differential pressure flow sensor 140,3rd electromagnetic valve 220 and the 4th electromagnetic valve 230 pass through switched path, differential pressure flow sensor 140 and first are monitored pipeline 150, second to monitor pipeline 160 and disconnect, be communicated with air, thus carry out the school zero of differential pressure flow sensor 140, to ensure accuracy and the reliability of differential pressure flow sensor 140.
Air-capacitor 170 is monitored pipeline 150 by the first connecting pipe 240 and first and is communicated with, and monitors pipeline 160 be communicated with by the second connecting pipe 250 and second, is communicated with compressed air source unit 110 by the 3rd connecting pipe 260.As the patient exhales, pipeline 150 and the second monitoring pipeline 160 are monitored in the gas flow first that air-capacitor 170 exits to stop patient to breathe out.
Further, the 3rd electromagnetic valve 220 is between the second connecting pipe 250 and differential pressure flow sensor 140; 4th electromagnetic valve 230 is between the first connecting pipe 240 and differential pressure flow sensor 140.
Second electromagnetic valve 180 is arranged in the 3rd connecting pipe 260, blocks for the connected sum controlling the 3rd connecting pipe 260.Wherein, when the second electromagnetic valve 180 is opened, compressed air source unit 110 pairs of air-capacitors 170 are inflated.Namely, when the second electromagnetic valve 180 is opened, be communicated with between compressed air source unit 110 and air-capacitor 170, compressed air source unit 110, is inflated to air-capacitor 170 air feed air-capacitor 170 by the 3rd connecting pipe 260.Concrete, when the patient inhales, the second electromagnetic valve 180 is opened.
In respiratory, be subject to the impact of air-flow to reduce patient further, the air-channel system 100 of vapor-removing also comprises the first constriction 270 and the second constriction 280 for limiting the speed that air-capacitor 170 is exitted.First constriction 270 is arranged in the first connecting pipe 240, and the second constriction 280 is arranged in the second connecting pipe 250.Namely when the gas in air-capacitor 170 is by the first connecting pipe 240 and the second connecting pipe 250, respectively after the first constriction 270 and the second constriction 280 current limliting, then the first monitoring pipeline 150 and the second monitoring pipeline 160 is entered into respectively.Namely the speed that first constriction 270 and the second constriction 280 are exitted to control air-capacitor 170 is set, makes air current flow slow, thus reduce the speed dewatered, increase the time of vapor-removing, and reduce the impact that air-flow produces patient.
Wherein, the first constriction 270 is vapour lock or choke valve.Second constriction 280 is vapour lock or choke valve.
Pressure transducer 190 is arranged on the first monitoring pipeline 150 or the second monitoring pipeline 160.Pressure transducer 190 is for detecting the atmospheric pressure value in differential pressure generating 120.Further, pressure transducer 190 is between the first connecting pipe 240 and differential pressure flow sensor 140; Or pressure transducer 190 is between the second connecting pipe 250 and differential pressure flow sensor 140.Specifically in the illustrated embodiment in which, pressure transducer 190 is arranged on the first monitoring pipeline 160, and pressure transducer 190 is between the first connecting pipe 250 and differential pressure flow sensor 140.
Circuit control unit controls the circuit of whole respirator, and processes the signal of telecommunication.Circuit control unit is all electrically connected with differential pressure flow sensor 140, first electromagnetic valve 130, second electromagnetic valve 180 and pressure transducer 190.Circuit control unit controls the opening and closing of the first electromagnetic valve 130 and the second electromagnetic valve 180.Circuit control unit controls the opening and closing of the first electromagnetic valve 130 according to the expiration of patient and air-breathing.Such as, by presetting an expiratory duration and inspiratory duration matched with patient to circuit control unit, in inspiratory duration, then control the first electromagnetic valve 130 close, in expiratory duration, control the first electromagnetic valve 130 open.
Wherein, circuit control unit is provided with the preset pressure value that an atmospheric pressure value detected with pressure transducer 190 compares, when the atmospheric pressure value that pressure transducer 190 detects reaches preset pressure value, circuit control unit controls the second electromagnetic valve 180 and closes, and compressed air source unit 110 stops inflating air-capacitor 170.Concrete, when the patient inhales, circuit control unit controls the second electromagnetic valve 180 and opens, and the first electromagnetic valve 130 cuts out; As the patient exhales, circuit control unit controls the first electromagnetic valve 130 and opens, now, air-capacitor 170 is exitted, gas in air-capacitor 170 enters the first monitoring pipeline 150 and the second monitoring pipeline 160 respectively by the first connecting pipe 240, second connecting pipe 250, then flows out from outlet pipe 124 through differential pressure generating 120.
Specifically in the present embodiment, circuit control unit is also all electrically connected with the 3rd electromagnetic valve 220 and the 4th electromagnetic valve 230.
Concrete, compressed air source unit 110 is also electrically connected with circuit control unit.
The process that the air-channel system 100 of above-mentioned vapor-removing realizes dewatering is as follows:
Initial: the first electromagnetic valve 130 and the second electromagnetic valve 180 are in closed condition.
When the patient inhales: circuit control unit controls the second electromagnetic valve 180 and opens, compressed air source unit 110 gives patient's air feed, and the gas that compressed air source unit 110 provides through differential pressure generating 120, then supplies patient through corrugated hose 122.Meanwhile, because the second electromagnetic valve 180 is opened, compressed air source unit 110, is namely inflated air-capacitor 170 to air-capacitor 170 air feed by the 3rd connecting pipe 260.When the atmospheric pressure value in differential pressure generating 120 reaches preset pressure value, the second electromagnetic valve 180 cuts out.
As the patient exhales, first electromagnetic valve 130 is opened, simultaneously due to patient expiration, the gas that patient breathes out flows to the external world through differential pressure generating 120 from outlet pipe 124, atmospheric pressure value in differential pressure generating 120 is diminished, when the atmospheric pressure value in differential pressure generating 120 is less than the atmospheric pressure value in air-capacitor 170, air-capacitor 170 starts venting, gas in air-capacitor 170 enters the first monitoring pipeline 150 and the second monitoring pipeline 160 through the first connecting pipe 240 and the second connecting pipe 250, then flows to the external world through differential pressure generating 120 from outlet pipe 124.
Because air-capacitor 170 is exitted while patient expiration, make the air-flow that in the first monitoring pipeline 150 and the second monitoring pipeline 160, all oriented differential pressure generating 120 flows, the gas preventing patient to breathe out enters into the first monitoring pipeline 150 and the second monitoring pipeline 160, and also prevent the condensed water in differential pressure generating 120 to enter into the first monitoring pipeline 150 and the second monitoring pipeline 160, efficiently avoid in the first monitoring pipeline 150 and the second monitoring pipeline 160 and form condensation water problem.
When the first connecting pipe 240 and the second connecting pipe 250 are respectively arranged with the first constriction 270 and the second constriction 280, the gas that air-capacitor 170 is released is when the first connecting pipe 240 and the second connecting pipe 250, after the first constriction 270 and the second constriction 280 current limliting, then enter into the first monitoring pipeline 150 and the second monitoring pipeline 160 respectively.
The air-channel system 100 of above-mentioned vapor-removing in the course of the work, patient is by corrugated hose 122 air-breathing, now, first electromagnetic valve 130 cuts out, second electromagnetic valve 180 is opened, compressed air source unit 110 provides source of the gas to patient, the source of the gas that compressed air source unit 110 provides is delivered to patient through differential pressure generating 120, simultaneously, because the second electromagnetic valve 180 opens, compressed air source unit 110 also enters into air-capacitor 170 by the 3rd connecting pipe 260 simultaneously, inflates to air-capacitor 170, when the atmospheric pressure value in differential pressure generating 120 reaches preset pressure value, the second electromagnetic valve 180 cuts out, as the patient exhales, first electromagnetic valve 130 is opened, outlet pipe 124 communicates with the external world, along with patient expiration, air-flow in differential pressure generating 120 flows to the external world from outlet pipe 124, atmospheric pressure value in differential pressure generating 120 is diminished, when the atmospheric pressure value in differential pressure generating 120 is less than the atmospheric pressure value in air-capacitor 170, air-capacitor 170 starts venting, gas in air-capacitor 170 is by the first connecting pipe 240 and the second connecting pipe 250, differential pressure generating 120 is flowed to respectively again through the first monitoring pipeline 150 and the second monitoring pipeline 160, namely form the air-flow from the first monitoring pipeline 150 to differential pressure generating 120 respectively and monitor the air-flow of pipeline 160 to differential pressure generating 120 from second, the air flow direction in differential pressure generating 120 first is prevented to monitor pipeline 150 and the second monitoring pipeline 160, namely the process dewatered is just while patient expiration, condensed water in the steam of breathing out to prevent patient and differential pressure generating 120 enters into the first monitoring pipeline 150 and the second monitoring pipeline 160, efficiently avoid and form condensation water problem in the first monitoring pipeline 150 and the second monitoring pipeline 160, the method that the mode heated with traditional use removes steam and adopt high-voltage high-speed airflow to be blown away by condensed water mode compared with, the removal process of the air-channel system of above-mentioned steam and the respiratory of patient adapt, what adopt is the respiratory control of patient, more safe and reliable.
In addition; 3rd electromagnetic valve 220 is arranged between the second connecting pipe 250 and differential pressure flow sensor 140; 4th electromagnetic valve 230 arranges between the first connecting pipe 240 and differential pressure flow sensor 140; can prevent steam from entering the 3rd electromagnetic valve 220 and the 4th electromagnetic valve 230, play the effect of protection the 3rd electromagnetic valve 220 and the 4th electromagnetic valve 230.
And pressure transducer 190 is arranged between the first connecting pipe 240 and differential pressure flow sensor 140; or; be be arranged between the second connecting pipe 250 and differential pressure flow sensor 140, can prevent steam from entering into pressure transducer 190, play the effect of protection pressure transducer 190.
Because above-mentioned respirator contains the air-channel system 100 of above-mentioned vapor-removing, respirator is made to have the longer life-span, and more safe.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an air-channel system for the vapor-removing of respirator, is characterized in that, comprising:
Compressed air source unit, for providing source of the gas;
Differential pressure generating, for generation of air-flow differential, described differential pressure generating is communicated with described compressed air source unit by pipeline, described differential pressure generating is also connected with the corrugated hose supplying patient respiratory and the outlet pipe be in communication with the outside;
First electromagnetic valve, is installed on described outlet pipe, is communicated with extraneous for controlling described outlet pipe;
Differential pressure flow sensor, for monitoring gas flow during patient respiratory;
First monitoring pipeline, two ends are communicated with described differential pressure flow sensor with described differential pressure generating respectively;
Second monitoring pipeline, two ends are communicated with described differential pressure flow sensor with described differential pressure generating respectively;
Air-capacitor, monitors pipeline communication by the first connecting pipe and described first, monitors pipeline communication by the second connecting pipe and described second, is communicated with described compressed air source unit by the 3rd connecting pipe;
Second electromagnetic valve, is arranged in described 3rd connecting pipe, blocks for the connected sum controlling described 3rd connecting pipe;
Pressure transducer, be arranged on described first monitoring pipeline or described second monitoring pipeline, described pressure transducer is for detecting the atmospheric pressure value in described differential pressure generating;
Circuit control unit, all be electrically connected with described differential pressure flow sensor, described first electromagnetic valve, described second electromagnetic valve and described pressure transducer, described circuit control unit controls the opening and closing of described first electromagnetic valve and described second electromagnetic valve, and described circuit control unit is provided with the preset pressure value that an atmospheric pressure value detected with described pressure transducer compares;
Wherein, when the atmospheric pressure value that described pressure transducer detects reaches described preset pressure value, described second closed electromagnetic valve; As described patient expiration, described air-capacitor venting is with the first monitoring pipeline described in the gas flow stoping patient to breathe out and described second monitoring pipeline.
2. the air-channel system of the vapor-removing of respirator according to claim 1, is characterized in that, also comprises:
First constriction, is arranged in described first connecting pipe;
Second constriction, is arranged in described second connecting pipe;
Wherein, described first constriction and described second constriction are for limiting the speed of described air-capacitor venting.
3. the air-channel system of the vapor-removing of respirator according to claim 2, is characterized in that, described first constriction is vapour lock or choke valve.
4. the air-channel system of the vapor-removing of respirator according to claim 2, is characterized in that, described second constriction is vapour lock or choke valve.
5. the air-channel system of the vapor-removing of respirator according to claim 1, it is characterized in that, also comprise the 3rd electromagnetic valve for calibrating described differential pressure flow sensor and the 4th electromagnetic valve, described 3rd electromagnetic valve is arranged on described first monitoring pipeline, and is electrically connected with described circuit control unit; Described 4th electromagnetic valve is arranged on described second monitoring pipeline, and is electrically connected with described circuit control unit.
6. the air-channel system of the vapor-removing of respirator according to claim 1, is characterized in that, described pressure transducer is between described first connecting pipe and described differential pressure flow sensor; Or described pressure transducer is between described second connecting pipe and described differential pressure flow sensor.
7. the air-channel system of the vapor-removing of respirator according to claim 1, is characterized in that, described compressed air source unit is turbofan or high-pressure air source assembly.
8. the air-channel system of the vapor-removing of respirator according to claim 1, it is characterized in that, also comprise the air pressure control piece be arranged on the pipeline connecting described compressed air source unit and described differential pressure generating, and described air pressure control piece is between described compressed air source unit and described differential pressure generating.
9. the air-channel system of the vapor-removing of respirator according to claim 8, is characterized in that, described air pressure control piece is pressure limiting valve or free inlet valve.
10. a respirator, is characterized in that, comprises the air-channel system of the vapor-removing of the respirator described in claim 1 ~ 9 any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158968.1A CN104784792B (en) | 2015-04-03 | 2015-04-03 | Breathing machine and moisture removing air path system thereof |
| PCT/CN2015/099925 WO2016155392A1 (en) | 2015-04-03 | 2015-12-30 | Ventilator and moisture-removing air circuit system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158968.1A CN104784792B (en) | 2015-04-03 | 2015-04-03 | Breathing machine and moisture removing air path system thereof |
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| CN104784792A true CN104784792A (en) | 2015-07-22 |
| CN104784792B CN104784792B (en) | 2017-05-17 |
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| WO (1) | WO2016155392A1 (en) |
Cited By (4)
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| WO2016155392A1 (en) * | 2015-04-03 | 2016-10-06 | 深圳市科曼医疗设备有限公司 | Ventilator and moisture-removing air circuit system thereof |
| CN109821120A (en) * | 2019-02-25 | 2019-05-31 | 深圳融昕医疗科技有限公司 | Blowing method, system and the ventilator with the system |
| CN110681013A (en) * | 2019-10-23 | 2020-01-14 | 深圳市科曼医疗设备有限公司 | Nonlinear air resistance and flushing module and breathing machine |
| CN113069660A (en) * | 2021-03-23 | 2021-07-06 | 淄博泰雷兹电子有限公司 | Automatic control system for pipeline environment of breathing machine |
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