CN102500020A - Pilot-operated type control air channel system of breathing machine - Google Patents
Pilot-operated type control air channel system of breathing machine Download PDFInfo
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- CN102500020A CN102500020A CN2011102960577A CN201110296057A CN102500020A CN 102500020 A CN102500020 A CN 102500020A CN 2011102960577 A CN2011102960577 A CN 2011102960577A CN 201110296057 A CN201110296057 A CN 201110296057A CN 102500020 A CN102500020 A CN 102500020A
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Abstract
The invention relates to a pilot-operated type control air channel system of a breathing machine, which comprises an oxygen communicating pipe, an oxygen flow adjusting valve (NV1), an air communicating pipe, an air inlet one-way valve (DV1), an air flow adjusting valve (NV2), a Venturi device (WENTURI), an air supply control branch air channel and an air supply control electromagnetic valve (CV1). The oxygen flow adjusting valve is arranged on the oxygen communicating pipe, the air inlet one-way valve (DV1) and the air flow adjusting valve (NV2) are arranged on the air communicating pipe, an outlet end of the Venturi device (WENTURI) is communicated with a system external outlet via a main pipe, an inlet end of the Venturi device (WENTURI) is communicated with the oxygen communicating pipe, a bypass of the Venturi device (WENTURI) is communicated with the air communicating pipe, the oxygen communicating pipe is serially communicated with a pressure reduction pump (REG1) and the oxygen flow adjusting valve via air channels from outside to inside, the air supply control electromagnetic valve (CV1) is arranged on the air supply control branch air channel and is serially communicated with the air supply control air channel via an air channel, an inlet end of the air supply control electromagnetic valve is communicated with the oxygen communicating pipe in front of an air inlet end of the oxygen flow adjusting valve via an air channel, an outlet end of the air supply control electromagnetic valve is communicated with a pneumatic control end of the oxygen flow adjusting valve via an air channel, and an exhaust end of the air supply control electromagnetic valve is communicated with the Venturi device or the main pipe via an air channel. The air channel device can adjust oxygen concentration, the small-drift-diameter air supply control electromagnetic valve can be adopted, safety is increased, and the service life of the pilot-operated type control air channel system is prolonged.
Description
Technical field
The present invention relates to medical electronics, be specifically related to adjust in a kind of respirator the air-channel system of oxygen concentration and longer service life.
Background technology
Respirator is that a kind of normal physiological that can replace, control or change the people is breathed, and increases pulmonary ventilation volume, improves respiratory function, alleviates work of breathing consumption, practices thrift the device of heart reservation ability.It must possess following four basic functions: promptly to lung inflation, air-breathing to the conversion of exhaling, discharge alveolar gas and exhale to air-breathing conversion, move in circles successively.Therefore correspondence must have: ⑴ can provide the power of carrying gas, replaces the work of human body respiration flesh; ⑵ can produce certain respiratory rhythm, comprises respiratory frequency and inspiratory/expiratory, to replace the function of human body respiration nervus centralis domination respiratory rhythm; ⑶ can provide suitable tidal volume (VT) or minute ventilation (MV), to satisfy the needs of respiratory metabolism; ⑷ gas supplied replaces human body nasal cavity function preferably through adding gentle humidifying, and can supply with and be higher than amount of oxygen contained in the atmosphere, with raising oxygen intake concentration, improves oxygenate.Power source: available Compressed Gas be used as power (pneumatic) or motor as power (electronic) respiratory frequency and inspiratory/expiratory pneumatic gas-control also capable of using, electronic automatically controlled, pneumatic type such as automatically controlled; Exhale switching mutually when air-breathing; Switch to expiration (volum-controlled type) after switching to expiration (level pressure type) after often when air-breathing, in breathing loop, reaching predetermined pressure or reaching predetermined volumes when air-breathing, but modern respirator all has above two kinds of forms concurrently.
At present; Respirator adopts air feed control electromagnetic valve to be connected on the control mode of charge flow rate control valve front; Therefore the ventilation bore of air feed control electromagnetic valve needs enough greatly, uses in highly compressed environment, and need open and close repeatedly; High to the requirement of air feed control electromagnetic valve like this, service life is short.
On the other hand, the applicant applies for China's invention " respiratory flow rhythm and pace of moving things control air valve " simultaneously, discloses a kind of flow control valve, controls the main channel through its pneumatic control end air pressure and opens or closes.
Summary of the invention
The technical issues that need to address of the present invention are, how a kind of pilot-operated type control breathing machine air-channel system is provided, and can increase the respirator security performance, improve the service life of respirator; Adjustment oxygen concentration and the service life of improving air feed control electromagnetic valve.
The above-mentioned technical problem of the present invention solves like this: make up a kind of pilot-operated type control breathing machine air-channel system, comprise the oxygen connecting pipe and go up the oxygen flow control valve that gas circuit is ganged up, also comprise:
The air communication pipeline and on the gas circuit breather check valve and the air flow rate adjustment valve of ganging up from outside to inside;
Venturi, the port of export is communicated with the outlet of respirator air-channel system through the trunk line gas circuit, and the arrival end gas circuit is communicated with said oxygen connecting pipe, and the bypass gas circuit is communicated with said air communication pipeline; Said oxygen connecting pipe gas circuit is from outside to inside ganged up drawdown pump and said oxygen flow control valve;
Air feed control is propped up gas circuit and is gone up the air feed control electromagnetic valve that gas circuit is ganged up; Said air feed control electromagnetic valve entrance end gas circuit is communicated with the inlet end oxygen connecting pipe before of said oxygen flow control valve; Port of export gas circuit is communicated with the pneumatic control end of said oxygen flow control valve, and the exhaust end gas circuit is communicated with said Venturi or trunk line.
According to respirator air-channel system provided by the invention, oxygen connecting pipe, air communication pipeline and trunk line constitute the main gas circuit of this air-channel system.
According to respirator air-channel system provided by the invention, said oxygen connecting pipe and said air communication pipeline are all also ganged up the filter at air inlet front end position separately.
According to respirator air-channel system provided by the invention, contact from outside to inside, successively on the said oxygen connecting pipe oxygen filter, said drawdown pump and oxygen flow control valve.
According to respirator air-channel system provided by the invention, said user interface is communicated with the patient respiratory valve through external pipe.
According to respirator air-channel system provided by the invention, also comprise through safety and prop up the relief valve that gas circuit is communicated with said trunk line.
According to respirator air-channel system provided by the invention, also comprise through freely breathing the free breather valve that a gas circuit is communicated with said trunk line.
According to respirator air-channel system provided by the invention, gang up the part that built-in flow transducer on trunk line also belongs to main gas circuit in addition, in a broad sense, also comprise the various pick offs on the gas circuit.
Respirator air-channel system provided by the invention; Venturi, small-bore air feed control electromagnetic valve have been adopted; Each pick off on associative processor, control circuit and program and the gas circuit; Can adjust oxygen concentration, the accurate control breathing rhythm and pace of moving things etc. as required, improve product whole service life and job stability, prior art has following advantage relatively:
1, adopts the pilot valve control mode.Air feed control electromagnetic valve is the pilot-actuated valve of flow control valve, changes the electromagnetic valve of air feed control in the past and connects with flow control valve, and air feed control electromagnetic valve is as the control mode of switch valve.Air feed control electromagnetic valve need not pass through main flow gas only through control gas, and its latus rectum requires very little, and the volume of air feed control electromagnetic valve is very little.Thereby respiratory flow rhythm and pace of moving things control section can unite two into one, and overall volume is very little.Make that air feed control magnetic valve performance is more stable, control more accurately that the life-span is longer;
2, adopt Venturi.Can effectively reduce oxygen concentration,, can realize that the oxygen concentration of respirator is adjustable continuously, satisfy the concrete needs of user through regulating the latus rectum of flow control valve.Adopt this device simultaneously,, reduce the oxygen consumption of gas cylinder, increase the service time of gas cylinder through sucking air.
Description of drawings
Further the present invention is elaborated below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 is a specific embodiment of the invention gas circuit structure sketch map;
Fig. 2 is a control sequence schematic flow sheet in the respirator shown in Figure 1.
Reference numeral wherein:
The F1-oxygen filter, PQ1-high-pressure pick off, REG1-air relief valve, CV1-air feed control electromagnetic valve, NV1-oxygen flow control valve; The WENTURI-Venturi, the built-in flow transducer of FQ1-, SV1-relief valve, OS-oxygen cell; The DV1-check valve, PQ2-first low-pressure sensor, the external flow transducer of FQ2-, F2-air filter; The free outlet valve of EV1-, NV2-air flow rate adjustment valve, EMS-patient respiratory valve, PQ3-second low-pressure sensor.
The specific embodiment
At first, explain that gas circuit of the present invention is crucial:
(1) Venturi and subsidiary conduit structure can suck air from bypass, realize the mixing of air and oxygen, reduce oxygen concentration;
(2) adopts non-series arrangement by the oxygen flow control valve NV1 of air feed control electromagnetic valve CV1 control, and the inside latus rectum of air feed control electromagnetic valve CV1 can be very little.
The second, the air-channel system structure of the specific embodiment of the invention is described:
The respirator air-channel system of the specific embodiment of the invention and the pick off on it; Structure is as shown in Figure 1, comprises main gas circuit and top set's gas circuit thereof, and main gas circuit comprises two inlets, an outlet; Difference corresponding oxygen connecting pipe, air communication pipeline and trunk line; Three pipelines are communicated with through Venturi WENTURI, and the air communication pipeline is bypass, and this air-channel system specifies as follows:
Venturi WENTURI can suck air from bypass, realizes the mixing of air and oxygen, reduces oxygen concentration;
The oxygen connecting pipe can connect oxygen cylinder, inserts high pressure oxygen, gets into Venturi WENTURI through oxygen filter F1, drawdown pump REG1 and oxygen flow control valve NV1 successively, sucks air communication pipeline air; Oxygen flow control valve NV1 can be through the flow velocity of manual adjustments oxygen, the size of the tidal volume of control breathing machine system; High-pressure pick off PQ1 also is set on the oxygen connecting pipe.
An air feed control gas circuit and air feed control electromagnetic valve CV1; Oxygen flow control valve NV1 is by air feed control electromagnetic valve CV1 control; The connection of air feed control electromagnetic valve CV1 arrival end is positioned at oxygen connecting pipe and the oxygen flow control valve NV1 pneumatic control end before the said charge flow rate control valve NV1 inlet end; Start signal control air feed control electromagnetic valve CV1 action is connected source of the gas and is opened oxygen flow control valve NV1 from its port of export, and respirator system is given the user air feed; Shutdown signal control air feed control electromagnetic valve CV1 transposition (disconnection arrival end source of the gas, port of export switching are communicated to exhaust end), this moment, oxygen flow control valve NV1 closed, and respirator system stops air feed, and user is exhaled simultaneously.
The air communication pipeline inserts extraneous air, gets into Venturi WENTURI through air filter F2, breather check valve DV1 and air flow rate adjustment valve NV2 successively; Breather check valve DV1 ensure air thus pipeline get into respirator, and in any case the air feed of system not thus pipeline leak in the air.
Trunk line; Ganged up built-in flow transducer FQ1 on it; Outlet is connected user through connecting pipe with patient respiratory valve EMS; The oxygen cell OS and the first low-pressure sensor PQ2 also are set on the trunk line, and wherein: oxygen cell OS can detect the oxygen concentration that respirator system offers user, and the signal that detects is offered software system; Built-in low-pressure sensor PQ2 detects the actual pressure of patient inhales, and signal is offered software system.
Safety gas circuit and relief valve SV1 are communicated with trunk line, and relief valve SV1 realizes that the pressure of respirator air-channel system supply user is no more than the setting value of relief valve, ensures air-breathing safety;
Freely breathe a gas circuit and a free outlet valve EV1, be communicated with trunk line, free outlet valve EV1 normally open valve; Open or close by signal of telecommunication Synchronization Control; The air feed that can ensure the respirator gas circuit when closing is tight, can discharge the residue air pressure in the air flue during unlatching, ensures the smooth and easy of patient exhales.Under first faults such as respirator quits work, patient from then on valve inhales people's air, ensures not suffocated of patient.
The respirator air-channel system of the specific embodiment of the invention also comprises:
Patient respiratory valve EMS, inside is equipped with and is breathed the mould lobe, and user is through the oxygen of suction respirator output, and the user expiration also directly flows to atmosphere by it, ensures that respirator is not contaminated;
External flow transducer FQ2 is installed near the user end, than the more stable flow that detects more accurately of built-in flow transducer;
The second low-pressure sensor PQ3 detects near patient end, and accuracy of detection is higher.
The two logical air feed control electromagnetic valve CV1 of this air-channel system comprise arrival end, the port of export and exhaust end, switch arrival end through signal of telecommunication control and are communicated with the port of export perhaps that the port of export is communicated with exhaust end, and gas flows to exhaust end from the port of export during aerofluxus.
At last, as shown in Figure 2 in conjunction with the method for work and the principle of the processor internal control program description specific embodiment of the invention that cooperates with air-channel system, this control sequence is that the multi-task parallel mode is moved, and specifically may further comprise the steps:
According to the setting of respirator system, unlatching and the closing time of system signal control air feed control electromagnetic valve CV1 action control oxygen flow control valve NV1 realize needed respiratory frequency of patient and inspiratory/expiratory;
Regulate oxygen flow control valve NV1, realize the needed inspiratory flow adjusting of patient.The flow of flow transducer FQ1 real-time monitoring system feeds back to software system with data.
In addition, the respective operations that " changes valve state according to goal condition " among Fig. 2 has: 1: according to breathing the parameter change valve state is set; 2: realize respective objects value (like specified Peep pressure) according to monitoring of respiration parameter regulation valve state.
The above is merely preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (5)
1. a pilot-operated type control breathing machine air-channel system comprises the oxygen connecting pipe and goes up the oxygen flow control valve (NV1) that gas circuit is ganged up, and it is characterized in that, also comprises:
The air communication pipeline and on the gas circuit breather check valve (DV1) and the air flow rate adjustment valve (NV2) of ganging up from outside to inside;
Venturi (WENTURI), the port of export is communicated with the externally ported of respirator air-channel system through the trunk line gas circuit, and the arrival end gas circuit is communicated with said oxygen connecting pipe, and the bypass gas circuit is communicated with said air communication pipeline; Said oxygen connecting pipe gas circuit is from outside to inside ganged up drawdown pump (REG1) and said oxygen flow control valve (NV1);
Air feed control is propped up gas circuit and is gone up the air feed control electromagnetic valve (CV1) that gas circuit is ganged up; Said air feed control electromagnetic valve entrance end gas circuit is communicated with the inlet end oxygen connecting pipe before of said oxygen flow control valve (NV1); Port of export gas circuit is communicated with the pneumatic control end of said oxygen flow control valve (NV1), and the exhaust end gas circuit is communicated with said Venturi (WENTURI) or trunk line.
2. according to the said respirator air-channel system of claim 1, it is characterized in that said oxygen connecting pipe and said air communication pipeline are all gone back gas circuit and ganged up the filter at air inlet leading portion position separately.
3. according to the said respirator air-channel system of claim 1, it is characterized in that, said externally ported through external pipe gas circuit connection patient respiratory valve (EMS).
4. according to the said respirator air-channel system of claim 1, it is characterized in that, also comprise through safety and prop up the relief valve (SV1) that gas circuit is communicated with said trunk line gas circuit.
5. according to the said respirator air-channel system of claim 1, it is characterized in that, also comprise through freely breathing the free breather valve (EV1) that a gas circuit is communicated with said trunk line gas circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102960577A CN102500020A (en) | 2011-09-28 | 2011-09-28 | Pilot-operated type control air channel system of breathing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102960577A CN102500020A (en) | 2011-09-28 | 2011-09-28 | Pilot-operated type control air channel system of breathing machine |
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| CN102500020A true CN102500020A (en) | 2012-06-20 |
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| CN2011102960577A Pending CN102500020A (en) | 2011-09-28 | 2011-09-28 | Pilot-operated type control air channel system of breathing machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784428A (en) * | 2012-08-14 | 2012-11-21 | 苏州品诺维新医疗科技有限公司 | Linkage adjustment control method of respiratory rate and flow of respirator |
| CN102784429A (en) * | 2012-08-14 | 2012-11-21 | 苏州品诺维新医疗科技有限公司 | Air circuit system for portable respirator |
| CN102793959A (en) * | 2012-08-14 | 2012-11-28 | 苏州品诺维新医疗科技有限公司 | Respirator air path system for stabilizing air and oxygen mixed tidal volume |
| CN104857607A (en) * | 2015-05-26 | 2015-08-26 | 深圳市安保科技有限公司 | Oxygen concentration calibration device |
| CN105169539A (en) * | 2015-10-30 | 2015-12-23 | 深圳市普博科技有限公司 | Emergency ventilator |
| CN105363105A (en) * | 2014-08-15 | 2016-03-02 | 深圳市安保科技有限公司 | Pneumatic electrically-controlled ventilation system and ventilation method thereof |
| CN113769214A (en) * | 2021-08-23 | 2021-12-10 | 河南辉瑞生物医电技术有限公司 | Control system of breathing machine |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784428A (en) * | 2012-08-14 | 2012-11-21 | 苏州品诺维新医疗科技有限公司 | Linkage adjustment control method of respiratory rate and flow of respirator |
| CN102784429A (en) * | 2012-08-14 | 2012-11-21 | 苏州品诺维新医疗科技有限公司 | Air circuit system for portable respirator |
| CN102793959A (en) * | 2012-08-14 | 2012-11-28 | 苏州品诺维新医疗科技有限公司 | Respirator air path system for stabilizing air and oxygen mixed tidal volume |
| CN102784429B (en) * | 2012-08-14 | 2014-12-03 | 苏州品诺维新医疗科技有限公司 | Air circuit system for portable respirator |
| CN105363105A (en) * | 2014-08-15 | 2016-03-02 | 深圳市安保科技有限公司 | Pneumatic electrically-controlled ventilation system and ventilation method thereof |
| CN105363105B (en) * | 2014-08-15 | 2017-09-05 | 深圳市安保科技有限公司 | A kind of Pneumatic electrical control aerating system and its vent method |
| CN104857607A (en) * | 2015-05-26 | 2015-08-26 | 深圳市安保科技有限公司 | Oxygen concentration calibration device |
| CN104857607B (en) * | 2015-05-26 | 2017-09-05 | 深圳市安保科技有限公司 | A kind of oxygen concentration calibrating installation |
| CN105169539A (en) * | 2015-10-30 | 2015-12-23 | 深圳市普博科技有限公司 | Emergency ventilator |
| CN105169539B (en) * | 2015-10-30 | 2017-12-26 | 深圳市普博科技有限公司 | A kind of first-aid respirator |
| CN113769214A (en) * | 2021-08-23 | 2021-12-10 | 河南辉瑞生物医电技术有限公司 | Control system of breathing machine |
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Application publication date: 20120620 |