CN201399147Y - Respirator air-oxygen mixing device with compressed air - Google Patents
Respirator air-oxygen mixing device with compressed air Download PDFInfo
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- CN201399147Y CN201399147Y CN2009200889782U CN200920088978U CN201399147Y CN 201399147 Y CN201399147 Y CN 201399147Y CN 2009200889782 U CN2009200889782 U CN 2009200889782U CN 200920088978 U CN200920088978 U CN 200920088978U CN 201399147 Y CN201399147 Y CN 201399147Y
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Abstract
A respirator air-oxygen mixing device with compressed air is characterized in that the device comprises an oxygen source and a compressed air source which are connected with an air-oxygen mixer (9) through communicating pipelines; and the oxygen source and the compressed air source are respectively connected with the air-oxygen mixer (9) through pressure maintaining valves (3 and 4) and throttles(5 and 6), which are arranged among communicating pipelines of the oxygen source and the compressed air source, wherein pressure difference control devices (7 and 8) used for controlling pressure difference at two ends of each throttle are respectively connected to the two throttles (5 and 6). The utility model has the benefits as follows: the pressure difference is used to control the flow rates,the problem that the flow rates of two airs are different and the error of the concentration difference of the oxygen output through air-oxygen mixing is relatively big; and meanwhile, the structureis so simple and easy to realize, and the device has the characteristics that the power consumption is low, the precision is high, the output flow rate is constant, the concentration of oxygen outputthrough the air-oxygen mixing is accurate and stable, and improves the clinical using effects of the respirator.
Description
Technical field
This utility model relates to the compressed-air actuated respirator air mixing device of being with of a kind of medical breathing machine, particularly a kind of high accuracy.This device can play stablizes the blended input flow rate of empty oxygen, makes the output flow of respirator and oxygen concentration control more accurate.
Background technology
Oxygen and two kinds of implementation methods of the general employing of compressed air hybrid technology of being used for respirator at present: 1, gas control: promptly the proportion of utilization valve is regulated mixed proportion by the spool of rotation adjusting; 2, automatically controlled: the make-and-break time by control oxygen electromagnetic valve and compressed air electromagnetic valve is regulated mixed proportion.
It all is that to be input to the oxygen of sky oxygen mixer identical with compressed-air actuated flow that but these two kinds of methods can access the prerequisite of accurate oxygen concentration output, and mixing the oxygen concentration of output according to preset proportion so just can be accurate.Yet the situation that the pressure that usually occurs two kinds of sources of the gas in reality is used does not wait, when if the pressure difference of two kinds of sources of the gas is big, so only the flow through pressure maintaining valve output after the simple voltage stabilizing has than big difference, and the oxygen concentration by the mixed output of setting under two kinds of gas input flow rates have than the situation of big difference tends to occur bigger error.
Summary of the invention
This utility model purpose causes the non-constant bigger weak point of output oxygen concentration error that makes of flow at existing variation because of the respirator bleed pressure in the above-mentioned prior art just, provides being with of a kind of high accuracy compressed-air actuated respirator air mixing device.This device is realized the accurate output of oxygen concentration by supply with the oxygen and the compressed air of same traffic to empty oxygen mixer.
The purpose of this utility model can realize by following technique measures:
Source of oxygen and the compressed air source that links to each other with empty oxygen mixer by connecting pipeline respectively that comprise with compressed-air actuated respirator air mixing device of the present utility model, pressure maintaining valve between connecting pipeline, choke valve link to each other with empty oxygen mixer described source of oxygen by being successively set on separately respectively with compressed air source, are connected with the pressure reduction control device that is used to control choke valve two ends pressure reduction respectively on described two choke valves.
Pressure reduction control device described in this utility model comprises valve body, described valve body by be arranged on the intravital valve seat in its chamber, pressure-sensitive diaphragm is divided into inlet chamber, outlet chamber and control chamber, the valve rod that is arranged in the valve pocket is installed in the valve pocket in the mode with the valve pocket coaxial line, one end of this valve rod combines with the end cap of valve body inlet chamber by spring and spring base, the other end passes the valve opening that processes on the valve seat and extends to outlet chamber, and combine with pressure-sensitive diaphragm, be provided with the flap that matches with the valve opening of valve seat at the middle part of described valve rod; Be respectively arranged with air inlet and gas outlet on described inlet chamber and the outlet chamber, air inlet is connected with the choke valve two ends by pipeline respectively with the gas outlet; Between outlet chamber and control chamber, be provided with communicating pipe, the end cap of control chamber is provided with the mouth of pipe that is connected with the constant voltage source of the gas, be used to regulate pressure reduction, under the pressure effect that the constant voltage source of the gas is set, pressure-sensitive diaphragm changes the position of flap by valve rod, and then changes the size that circulation area is controlled gas flow.
Operation principle of the present utility model is as follows:
Gases at high pressure enter through the source of the gas port, enter choke valve after being arranged on the pressure maintaining valve voltage stabilizing between its pipeline, and the pressure reduction control device produces a constant pressure difference, and the pressure reduction at control choke valve two ends makes the output flow of choke valve constant; In like manner, oxygen enters through the source of the gas port, enters choke valve after being arranged on the pressure maintaining valve voltage stabilizing between its pipeline, and the pressure reduction control device produces a constant pressure difference, and the pressure reduction at control choke valve two ends makes the output flow of choke valve constant; Because the control of the pressure reduction control device on oxygen channel oxygen choke valve, pressure reduction control device control compressed air choke valve on the compressed air channel, this pressure reduction that also just makes two passage pressure reduction control device produce equates, then the flow of two passages output also equates and is constant, thereby, realize the accurate output of oxygen concentration to the oxygen and the compressed air of empty oxygen mixer supply same traffic.
This utility model compared with prior art, the beneficial effects of the utility model are: utilize pressure reduction control flow, solve the two gas flows oxygen of having leisure that makes inequality and mixed the bigger problem of output oxygen concentration difference error, simple in structure being easy to of this utility model realized simultaneously, and have low-power consumption, high accuracy, output flow constant, supply with accurately stable characteristics of oxygen concentration that empty oxygen mixes output, improved the clinical result of use of respirator.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is the structure chart of pressure reduction control choke valve among Fig. 1.
Among the figure, 1. oxygen source port, 2. the compressed air gas source port 3. is arranged on the pressure maintaining valve between oxygen delivery pipeline, 4. be arranged on the pressure maintaining valve between compressed air conveying pipeline, 5. be arranged on the choke valve between oxygen delivery pipeline, 6. be arranged on the choke valve between compressed air conveying pipeline, 7. be arranged on the pressure reduction control device between oxygen delivery pipeline, 8. be arranged on the pressure reduction control device between compressed air conveying pipeline, 9. empty oxygen mixer, 10. choke valve valve body, 11. choke valve air inlets, 12. choke valve flap, 13, choke valve communicating pipe, 14. springs, 15. choke valve valve rod, 16. the choke valve gas outlet, 17. pressure-sensitive diaphragms, 18. mouths of pipe.
The specific embodiment
This utility model is described further below with reference to embodiment (accompanying drawing):
As shown in Figure 1, source of oxygen and the compressed air source that links to each other with empty oxygen mixer 9 by connecting pipeline respectively that comprise with compressed-air actuated respirator air mixing device of the present utility model, pressure maintaining valve between connecting pipeline 3,4, choke valve 5,6 link to each other with empty oxygen mixer 9 described source of oxygen by being successively set on separately respectively with compressed air source, wherein are connected with the pressure reduction control device 7,8 that is used to control choke valve two ends pressure reduction on choke valve 5,6.
Its operation principle is: oxygen and Compressed Gas enter through separately source of the gas port one, 2 respectively, enter choke valve 5,6 through being arranged on separately after 3,4 voltage stabilizings of pressure maintaining valve between pipeline, pressure reduction control device 7,8 produces a constant pressure difference, and the pressure reduction at control choke valve 5,6 two ends makes the output flow of choke valve constant.The constant current gas of two paths output flows to patient after empty oxygen mixer 9 mixes, thereby realizes the accurate output and the control of oxygen concentration.
As shown in Figure 2, pressure reduction control device 7 described in this utility model, 8 comprise valve body 10, described valve body 10 is by being arranged on the intravital valve seat in its chamber, pressure-sensitive diaphragm 17 is divided into inlet chamber, outlet chamber and control chamber, the valve rod 15 that is arranged in the valve pocket is installed in the valve pocket in the mode with the valve pocket coaxial line, one end of this valve rod combines with the end cap of valve body inlet chamber by spring and spring base, the other end passes the valve opening that processes on the valve seat and extends to outlet chamber, and combine with pressure-sensitive diaphragm 17, be provided with the flap 12 that matches with the valve opening of valve seat at the middle part of described valve rod; Be respectively arranged with air inlet 11 and gas outlet 16 on described inlet chamber and the outlet chamber, air inlet 11 is connected with the choke valve two ends by pipeline respectively with gas outlet 16; Between outlet chamber and control chamber, be provided with communicating pipe 13, the end cap of control chamber is provided with the mouth of pipe 18 that is connected with the constant voltage source of the gas, be used to regulate pressure reduction, under the pressure effect that the constant voltage source of the gas is set, pressure-sensitive diaphragm 17 changes the position of flap 12 by valve rod 15, and then changes the size that circulation area is controlled gas flow.
Claims (2)
1, a kind ofly is with compressed-air actuated respirator air mixing device, it is characterized in that: described device comprises source of oxygen and the compressed air source that links to each other with empty oxygen mixer (9) by connecting pipeline respectively, pressure maintaining valve between connecting pipeline (3,4), choke valve (5,6) link to each other with empty oxygen mixer (9) described source of oxygen by being successively set on separately respectively with compressed air source, are connected with the pressure reduction control device (7,8) that is used to control choke valve two ends pressure reduction on described two choke valves (5,6) respectively.
2, air mixing device according to claim 1, it is characterized in that: described pressure reduction control device comprises valve body (10), described valve body (10) is by being arranged on the intravital valve seat in its chamber, pressure-sensitive diaphragm (17) is divided into inlet chamber, outlet chamber and control chamber, the valve rod (15) that is arranged in the valve pocket is installed in the valve pocket in the mode with the valve pocket coaxial line, one end of this valve rod combines with the end cap of valve body inlet chamber by spring and spring base, the other end passes the valve opening that processes on the valve seat and extends to outlet chamber, and combine with pressure-sensitive diaphragm (17), be provided with the flap (12) that matches with the valve opening of valve seat at the middle part of described valve rod; Be respectively arranged with air inlet (11) and gas outlet (16) on described inlet chamber and the outlet chamber, air inlet (11) is connected with the choke valve two ends by pipeline respectively with gas outlet (16); Be provided with communicating pipe (13) between outlet chamber and control chamber, the end cap of control chamber is provided with the mouth of pipe (18) that is connected with the constant voltage source of the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200889782U CN201399147Y (en) | 2009-03-23 | 2009-03-23 | Respirator air-oxygen mixing device with compressed air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200889782U CN201399147Y (en) | 2009-03-23 | 2009-03-23 | Respirator air-oxygen mixing device with compressed air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201399147Y true CN201399147Y (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200889782U Expired - Lifetime CN201399147Y (en) | 2009-03-23 | 2009-03-23 | Respirator air-oxygen mixing device with compressed air |
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| Country | Link |
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| CN (1) | CN201399147Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507854B (en) * | 2009-03-23 | 2011-04-20 | 王中 | Respirator air-oxygen mixing device with compressed air |
| CN102500023A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | Air source air channel system of breathing machine |
| CN103826685A (en) * | 2011-04-13 | 2014-05-28 | 迈克尔·科林 | Gas delivery method and apparatus |
| CN108042275A (en) * | 2017-12-21 | 2018-05-18 | 重庆馨康阁科技有限公司 | Field ambulance wounded's seat |
-
2009
- 2009-03-23 CN CN2009200889782U patent/CN201399147Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507854B (en) * | 2009-03-23 | 2011-04-20 | 王中 | Respirator air-oxygen mixing device with compressed air |
| CN103826685A (en) * | 2011-04-13 | 2014-05-28 | 迈克尔·科林 | Gas delivery method and apparatus |
| US10576238B2 (en) | 2011-04-13 | 2020-03-03 | Thornhill Scientific Inc. | Gas delivery method and apparatus |
| US11464934B2 (en) | 2011-04-13 | 2022-10-11 | Thornhill Scientific Inc. | Gas delivery method and apparatus |
| CN102500023A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | Air source air channel system of breathing machine |
| CN108042275A (en) * | 2017-12-21 | 2018-05-18 | 重庆馨康阁科技有限公司 | Field ambulance wounded's seat |
| CN108042275B (en) * | 2017-12-21 | 2019-07-30 | 重庆馨康阁科技有限公司 | Field ambulance wounded's seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100210 Effective date of abandoning: 20090323 |