CN102793959B - Respirator air path system for stabilizing air and oxygen mixed tidal volume - Google Patents
Respirator air path system for stabilizing air and oxygen mixed tidal volume Download PDFInfo
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- CN102793959B CN102793959B CN201210287871.7A CN201210287871A CN102793959B CN 102793959 B CN102793959 B CN 102793959B CN 201210287871 A CN201210287871 A CN 201210287871A CN 102793959 B CN102793959 B CN 102793959B
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Abstract
The invention relates to the technical field of respiration equipment in medical equipment, in particular to a respirator air path system for stabilizing air and oxygen mixed tidal volume. The respirator air path system comprises components such as a switching valve, a sequence valve, a linkage flow adjusting valve and a venturi tube, wherein a flow regulator of a first needle valve and a flow regulator of a second needle valve in the linkage flow adjusting valve are arranged according to a set proportion in a linkage way, so that the flow of respired gas in the venturi tube is equal to the flow of gas output by the second needle valve in a pure oxygen state of a respirator. Accordingly, control of low power consumption and large flow is realized, the system energy consumption is 1/3 of that of the normal respirator or even lower. The respirator air path system has the advantages of stability, high safety, long life and simpler and safer application.
Description
Technical field
The present invention relates to the breathing apparatus technical field in armarium, refer in particular to exhaling of a kind of stable empty oxygen mixed tide tolerance
Suction machine air-channel system.
Background technology
At present, in the breathing apparatus of medical field, breathing apparatus supply oxygen is to patient respiratory or carry out first aid, has
Time, need oxygen and air to be realized automatic switching function and be arranged in breathing apparatus to reach the requirement for patient respiratory, order
Before, the multiplication of respirator tidal volume when pure oxygen turns the mixing of empty oxygen, the tidal volume reduction half when empty oxygen mixing turns pure oxygen.This
The change of tidal volume brings huge potential safety hazard to patient, and make the complicated operation of doctor, step is many simultaneously.In view of this, as
What improves existing air channel system of breathing machine makes it apply more simply, and safety becomes problem to be solved.
Summary of the invention
Object of the present invention is exactly the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance provided for the deficiencies in the prior art part.
For achieving the above object, the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance of the present invention, includes: hyperbaric oxygen source of the gas and outside atmosphere, also include:
One air relief valve, this air relief valve has the valve body pressure of the hyperbaric oxygen source of the gas of input being reduced to setup pressure value;
One switch valve, this switch valve has the valve body being realized input gas path on-off by open and close two states;
One sequence valve, this sequence valve is provided with control gas entrance, oxygen intake, air intake and the outlet of switching gas, and the existing oxygen intake connection of control QI excess had by controlling the input of gas entrance of this sequence valve switches gas outlet or air intake is communicated with the valve body switching the switched path function that gas exports;
One interlock flow control valve, this interlock flow control valve is formed in parallel by first needle-valve and the second needle-valve with reduction gas flow function;
One Venturi tube, this venturi pipe has the parts that can realize gas and vapor permeation from bypass from suction inlet suction gas;
One patient respiratory valve, respirator passes through this patient respiratory valve to patient's air feed;
During assembling, hyperbaric oxygen source of the gas is communicated in air relief valve, and the outlet side of air relief valve is divided into two-way, and the first via of air relief valve outlet side is communicated to switch valve, and the outlet side of switch valve is communicated to the control gas entrance of sequence valve; Second tunnel of air relief valve outlet side is communicated with the second needle-valve in flow control valve with the first needle-valve in interlock flow control valve respectively, and the first needle-valve reaches patient after being communicated with Venturi tube, patient respiratory valve successively; Second needle-valve is communicated to the oxygen intake of sequence valve, and the switching gas outlet of sequence valve is communicated with from suction inlet with the bypass of Venturi tube, and the air intake of sequence valve is communicated with outside atmosphere;
In interlock flow control valve, the Flow-rate adjustment of the first needle-valve and the Flow-rate adjustment of the second needle-valve are arranged by setting proportional linkage, when making respirator be switched to sky oxygen admixture, the gas flow of the suction in Venturi tube is equal with the gas flow that the second needle-valve exports under respirator pure oxygen state.
Electromagnetic valve, amplifying valve and free outlet valve, amplifying valve is connected between air relief valve and interlock flow control valve, free outlet valve is connected on the interface channel of Venturi tube and patient respiratory valve, the gas input port of electromagnetic valve is connected with the second tunnel of air relief valve outlet side, the control delivery outlet of electromagnetic valve is connected to the air port of amplifying valve and the control port of free outlet valve, and the bypass that the air vent of electromagnetic valve is connected to Venturi tube is from suction inlet or be connected to outside atmosphere to discharge the waste gas in amplifying valve and free outlet valve.
The relief valve of overvoltage protection was installed before between described free outlet valve and Venturi tube.
Pressure transducer, oxygen filter is connected with in turn between described hyperbaric oxygen source of the gas and air relief valve.
Air filter and check valve is connected with in turn between described outside atmosphere and sequence valve.
Described patient respiratory valve is connected with Pressure gauge and low pressure sensor.
Also include: described switch valve is the two-position three way mechanical valve of mechanical, hand-driven on-off control.
Described patient respiratory valve inside is equipped with and is breathed mould lobe.
Adopt after said system, hand switch gauge tap valve can be adopted, by sequence valve, the switching that circulation of qi promoting road is communicated with is mixed into pure oxygen and empty oxygen, realizes oxygen concentration two grades adjustable; The Flow-rate adjustment of the first needle-valve and the Flow-rate adjustment of the second needle-valve in interlock flow control valve is utilized to arrange by setting proportional linkage, when making respirator be switched to sky oxygen admixture, the gas flow of the suction in Venturi tube is equal with the gas flow that the second needle-valve exports under respirator pure oxygen state; Thus the ventilation realized when air channel system of breathing machine of the present invention switches between pure oxygen mixes with empty oxygen is constant.Utilize the control of solenoid control amplifying valve large discharge in the present invention, start signal Controlling solenoid valve is to patient's air feed, and the transposition of shutdown signal Controlling solenoid valve makes respirator stop air feed, and patient is breathed by free outlet valve.As from the foregoing, the present invention realizes the control of low-power consumption large discharge, and system power consumption is the 1/3 even lower of common respirator, and present system is more stable, safer, and the life-span is longer, application is more simple, safety.
Accompanying drawing explanation
Fig. 1 is the gas circuit structure schematic diagram of air channel system of breathing machine of the present invention.
Fig. 2 is switch valve in the embodiment of the present invention and sequence valve gas circuit catenation principle figure.
Detailed description of the invention
Embodiment as shown in Figure 1-2, a kind of air channel system of breathing machine of stable empty oxygen mixed tide tolerance, includes: hyperbaric oxygen source of the gas O
2with outside atmosphere AIR, hyperbaric oxygen source of the gas O
2can adopt the products such as oxygen cylinder, outside atmosphere AIR is exactly the air of normal atmospheric pressure, also includes:
One air relief valve REG1, this air relief valve REG1 have the hyperbaric oxygen source of the gas O by input
2pressure be reduced to the valve body of setup pressure value; This air relief valve REG1 provide stable operating pressure to air-channel system;
One switch valve SW1, this switch valve SW1 have the valve body being realized input gas path on-off by open and close two states; Described switch valve SW1 is the two-position three way mechanical valve of mechanical, hand-driven on-off control, and it is the pilot-actuated valve of sequence valve SEV1, controls manually to select open and close to control gas, the commutation of control sequence valve SEV1; Realize the pure oxygen of air-channel system or the conversion of empty oxygen mixing.
One sequence valve SEV1, this sequence valve SEV1 is provided with and controls gas entrance a1, oxygen intake a2, air intake a3 and switch gas outlet a4, this sequence valve SEV1 existing oxygen intake a2 of control QI excess had by controlling gas entrance a1 input to be communicated with the valve body switching gas outlet a4 or air intake a3 and be communicated with the switched path function switching gas outlet a4;
One interlock flow control valve NV, this interlock flow control valve NV are formed in parallel by having the first needle-valve NV1 reducing gas flow function and the second needle-valve NV2 with reduction gas flow function;
One Venturi tube WENTURI, this Venturi tube WENTURI have the parts that can realize gas and vapor permeation from bypass from suction inlet suction gas; Venturi tube WENTURI, after empty oxygen mixing, is the device of the oxygen concentration that can reduce respirator.
One patient respiratory valve EMS, respirator passes through this patient respiratory valve EMS to patient's air feed; Described patient respiratory valve EMS inside is equipped with and is breathed mould lobe.Respirator air feed is through giving patient herein, and the expiration of patient flows to air from here, and the waste gas that such patient breathes out does not enter respirator, ensures not contaminated.
During assembling, hyperbaric oxygen source of the gas O
2be communicated in air relief valve REG1, the outlet side of air relief valve REG1 is divided into two-way, and the first via of air relief valve REG1 outlet side is communicated to switch valve SW1, and the outlet side of switch valve SW1 is communicated to the control gas entrance of sequence valve SEV1; Second tunnel of air relief valve REG1 outlet side is communicated with the second needle-valve NV2 in flow control valve NV with the first needle-valve NV1 in interlock flow control valve NV respectively, and the first needle-valve NV1 reaches patient after being communicated with Venturi tube WENTURI, patient respiratory valve EMS successively; Second needle-valve NV2 is communicated to the oxygen intake a2 of sequence valve SEV1, and the switching gas outlet a4 of sequence valve SEV1 is communicated with from suction inlet with the bypass of Venturi tube WENTURI, and the air intake a3 of sequence valve SEV1 is communicated with outside atmosphere AIR;
In interlock flow control valve NV, the Flow-rate adjustment of the first needle-valve NV1 and the Flow-rate adjustment of the second needle-valve NV2 are arranged by setting proportional linkage, when making respirator be switched to sky oxygen admixture, the gas flow of the suction in Venturi tube WENTURI is equal with the gas flow that the second needle-valve NV2 exports under respirator pure oxygen state.
Air-channel system of the present invention also includes electromagnetic valve SV1, amplifying valve AV and free outlet valve EV1, amplifying valve AV is connected between air relief valve REG1 and interlock flow control valve NV, free outlet valve EV1 is connected on the interface channel of Venturi tube WENTURI and patient respiratory valve EMS, the gas input port of electromagnetic valve SV1 is connected with the second tunnel of air relief valve REG1 outlet side, the control delivery outlet of electromagnetic valve SV1 is connected to the air port of amplifying valve AV and the control port of free outlet valve EV1, the bypass that the air vent of electromagnetic valve SV1 is connected to Venturi tube WENTURI is from suction inlet or be connected to outside atmosphere to discharge the waste gas in amplifying valve AV and free outlet valve EV1.
Amplifying valve AV is the mechanical valve of the 2/2-way of big orifice, is the control valve of its guide, realizes by small flow controlling large flow, the reliable opening and closing of the machine gas circuit that ensures respiration by electromagnetic valve as SV1.
Free outlet valve EV1 is a kind of normally open valve, is opened or closed by electromagnetic valve SV1 Synchronization Control.Can ensure during closedown that the air feed of respirator gas circuit is tight, the residue air pressure in air flue during unlatching, can be discharged, ensure that patient expiration's is smooth and easy.Under respirator such as to quit work at the Fisrt fault, from then on patient can suck air, ensures not suffocated of patient.
Be provided with the relief valve SV2 of overvoltage protection before between described free outlet valve EV1 and Venturi tube WENTURI, when exceeding setup pressure value, relief valve SV2 can open pressure release automatically, ensures the safety of patient breaths.
Described hyperbaric oxygen source of the gas O
2and be connected with pressure transducer PQ1, oxygen filter F1 between air relief valve REG1 in turn, pressure transducer PQ1 is used for detecting oxygen pressure, data is transported in software system;
Air filter F2 and check valve CV1 is connected with in turn between described outside atmosphere AIR and sequence valve SEV1, check valve CV1 makes air enter respirator thus, can only enter, can not oppositely flow out, under any circumstance the gas of respirator not thus road be leaked in air.
Described patient respiratory valve EMS is connected with Pressure gauge PG and low pressure sensor PQ2, and low pressure sensor PQ2 is used to detect patient respiratory pressure in real time, and signal is supplied to software system.
During work, when first being opened by control signal Controlling solenoid valve SV1, electromagnetic valve SV1 is exported and controls gas to amplifying valve AV and free outlet valve EV1, make amplifying valve AV be in connected state, and free outlet valve EV1 is in closed condition;
When the hand switch of closing switch valve SW1, do not control gas entering order valve SEV1, sequence valve SEV1 replaces under the action of the spring, the oxygen that second needle-valve NV2 is exported is communicated with from suction inlet with the bypass of Venturi tube WENTURI, oxygen is divided into two-way through interlock flow control valve NV, one tunnel arrives Venturi tube WENTURI after the flow of the first needle-valve NV1 reduces, another road is order of arrival valve SEV1 after the flow of the second needle-valve NV2 reduces, sucked by the suction of Venturi tube bypass from suction inlet by the switching gas outlet a4 of sequence valve SEV1 again, patient is supplied to use through patient respiratory valve EMS after two parts of oxygen mix in Venturi tube WENTURI.
When the hand switch of opening switch valve SW1, make to enter in the high voltage control gas entering order valve SEV1 of switch valve SW1, make the oxygen open circuit of the second needle-valve NV2, and outside atmosphere AIR is communicated with from suction inlet with Venturi tube bypass,
The outside atmosphere AIR tolerance that the suction that Venturi tube bypass produces from suction inlet absorbs and after the flow of the second needle-valve NV2 reduces oxygen tolerance equal, like this, thus realize when air channel system of breathing machine of the present invention switches between pure oxygen mixes with empty oxygen
Ventilation is constant.
When control signal Controlling solenoid valve SV1 closes, the control QI GUAN making electromagnetic valve SV1 export to amplifying valve AV and free outlet valve EV1 is closed, make amplifying valve AV be in closed condition, and free outlet valve EV1 is in open mode, patient breathes extraneous air by free breather valve EV1.
As from the foregoing, the present invention realizes the control of low-power consumption large discharge, and system power consumption is the 1/3 even lower of common respirator, and present system is more stable, safer, and the life-span is longer, application is more simple, safety.
Claims (8)
1. stablize an air channel system of breathing machine for empty oxygen mixed tide tolerance, include: hyperbaric oxygen source of the gas and outside atmosphere, is characterized in that, also includes:
One air relief valve, this air relief valve has the valve body pressure of the hyperbaric oxygen source of the gas of input being reduced to setup pressure value;
One switch valve, this switch valve has the valve body being realized input gas path on-off by open and close two states;
One sequence valve, this sequence valve is provided with control gas entrance, oxygen intake, air intake and the outlet of switching gas, and the existing oxygen intake connection of control QI excess had by controlling the input of gas entrance of this sequence valve switches gas outlet or air intake is communicated with the valve body switching the switched path function that gas exports;
One interlock flow control valve, this interlock flow control valve is formed in parallel by first needle-valve and the second needle-valve with reduction gas flow function;
One Venturi tube, this venturi pipe has the parts that can realize gas and vapor permeation from bypass from suction inlet suction gas;
One patient respiratory valve, respirator passes through this patient respiratory valve to patient's air feed;
During assembling, hyperbaric oxygen source of the gas is communicated in air relief valve, and the outlet side of air relief valve is divided into two-way, and the first via of air relief valve outlet side is communicated to switch valve, and the outlet side of switch valve is communicated to the control gas entrance of sequence valve; Second tunnel of air relief valve outlet side is communicated with the second needle-valve in flow control valve with the first needle-valve in interlock flow control valve respectively, and the first needle-valve reaches patient after being communicated with Venturi tube, patient respiratory valve successively; Second needle-valve is communicated to the oxygen intake of sequence valve, and the switching gas outlet of sequence valve is communicated with from suction inlet with the bypass of Venturi tube, and the air intake of sequence valve is communicated with outside atmosphere;
In interlock flow control valve, the Flow-rate adjustment of the first needle-valve and the Flow-rate adjustment of the second needle-valve are arranged by setting proportional linkage, when making respirator be switched to sky oxygen admixture, the gas flow of the suction in Venturi tube is equal with the gas flow that the second needle-valve exports under respirator pure oxygen state.
2. the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance according to claim 1, it is characterized in that, also include: electromagnetic valve, amplifying valve and free outlet valve, amplifying valve is connected between air relief valve and interlock flow control valve, free outlet valve is connected on the interface channel of Venturi tube and patient respiratory valve, the gas input port of electromagnetic valve is connected with the second tunnel of air relief valve outlet side, the control delivery outlet of electromagnetic valve is connected to the air port of amplifying valve and the control port of free outlet valve, the bypass that the air vent of electromagnetic valve is connected to Venturi tube is from suction inlet or be connected to outside atmosphere to discharge the waste gas in amplifying valve and free outlet valve.
3. the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance according to claim 2, is characterized in that: the relief valve being provided with overvoltage protection before between described free outlet valve and Venturi tube.
4. the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance according to claim 3, is characterized in that: be connected with pressure transducer, oxygen filter in turn between described hyperbaric oxygen source of the gas and air relief valve.
5. the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance according to claim 4, is characterized in that: between described outside atmosphere and sequence valve, be connected with air filter and check valve in turn.
6. the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance according to claim 5, is characterized in that: on described patient respiratory valve, be connected with Pressure gauge and low pressure sensor.
7. the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance according to any one of claim 1-6, is characterized in that, also include: described switch valve is the two-position three way mechanical valve of mechanical, hand-driven on-off control.
8. the air channel system of breathing machine of a kind of stable empty oxygen mixed tide tolerance according to claim 7, is characterized in that, also include: described patient respiratory valve inside is equipped with and is breathed mould lobe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287871.7A CN102793959B (en) | 2012-08-14 | 2012-08-14 | Respirator air path system for stabilizing air and oxygen mixed tidal volume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287871.7A CN102793959B (en) | 2012-08-14 | 2012-08-14 | Respirator air path system for stabilizing air and oxygen mixed tidal volume |
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| CN102793959A CN102793959A (en) | 2012-11-28 |
| CN102793959B true CN102793959B (en) | 2015-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN108635649A (en) * | 2018-05-03 | 2018-10-12 | 北京易世恒电子技术有限责任公司 | Lung ventilator and its empty oxygen mixing valve |
| CN116159220A (en) * | 2023-03-14 | 2023-05-26 | 深圳市安保医疗科技股份有限公司 | Breathing gas circuit structure and breathing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4238011A1 (en) * | 1992-11-11 | 1994-05-19 | Linde Ag | Method and device for mixing gases |
| US7509957B2 (en) * | 2006-02-21 | 2009-03-31 | Viasys Manufacturing, Inc. | Hardware configuration for pressure driver |
| CN200954306Y (en) * | 2006-03-10 | 2007-10-03 | 张培林 | Air-oxygen mixing deivce of compressed-air-free smart respirator |
| CN101584901B (en) * | 2008-05-23 | 2011-02-09 | 北京航天长峰股份有限公司 | Oxygen and laughing gas linkage device adopting pneumatic valve |
| CN102380150B (en) * | 2011-09-28 | 2014-07-30 | 于邦仲 | Pneumatic gas-controlled breathing machine |
| CN102500020A (en) * | 2011-09-28 | 2012-06-20 | 于邦仲 | Pilot-operated type control air channel system of breathing machine |
| CN102500021B (en) * | 2011-09-28 | 2014-07-30 | 于邦仲 | Air channel system of pilot type control belt intelligent PEEP (positive end expiratory pressure) breathing machine |
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