CN112327956A - Intelligent pressure regulating device of oxygen generator - Google Patents
Intelligent pressure regulating device of oxygen generator Download PDFInfo
- Publication number
- CN112327956A CN112327956A CN202011275457.5A CN202011275457A CN112327956A CN 112327956 A CN112327956 A CN 112327956A CN 202011275457 A CN202011275457 A CN 202011275457A CN 112327956 A CN112327956 A CN 112327956A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- pipe connection
- regulating device
- pressure regulating
- connection spare
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 116
- 239000001301 oxygen Substances 0.000 title claims abstract description 116
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 22
- 238000005070 sampling Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000001706 oxygenating effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
- C01B13/0262—Physical processing only by adsorption on solids characterised by the adsorbent
- C01B13/027—Zeolites
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model provides an oxygenerator intelligence pressure regulating device, is including ball valve (1) that is located oxygen output pipeline, ball valve (1) front portion is equipped with preceding pipe connection spare, and the rear portion is equipped with back pipe connection spare, and the oxygen that makes flows through ball valve (1) from back pipe connection spare after the past pipe connection spare flows, still be equipped with choke valve (9) between preceding pipe connection spare and the back pipe connection spare, choke valve (9) front end links to each other with preceding pipe connection spare through first hose (7), inside stopper of first hose (7) and choke valve (9) link has micropore (10), be equipped with one or more through-hole along oxygen flow direction in micropore (10). This oxygenerator intelligence pressure regulating device when oxygen jar start oxygenating, can directly close the ball valve switch, lets oxygen flow out from the micropore, and the micropore size matches with oxygenerator system oxygen ability, can guarantee that the oxygen concentration that flows into in the oxygen jar is greater than 90%, easy operation, anyone can operate.
Description
Technical Field
The invention relates to the technical field of pressure control, in particular to an intelligent pressure regulating device of an oxygen generator.
Background
The medical molecular sieve oxygen-making equipment generally uses zeolite molecular sieve as adsorbent, adopts Pressure Swing Adsorption (PSA) method to prepare oxygen, then stores in oxygen tank. When a power failure accident occurs in a hospital, the oxygen pressure in the oxygen tank is reduced to zero, and after the hospital receives a power supply, oxygen needs to be input into the oxygen tank again to enable the oxygen pressure in the oxygen tank to return to more than 90% so as to meet the oxygen demand of a patient.
The conventional oxygen generator has the oxygen outlet pressure of 4-5 kilograms, and the oxygen output pipeline is provided with a ball valve for controlling the opening and closing of the oxygen output pipeline. When the hospital has a power failure, the oxygenerator goes out the pressure differential of oxygen pressure and oxygen jar great, if the ball valve is in the state of opening completely, can far exceed the system oxygen ability of oxygenerator, and large-traffic outflow oxygen can certainly lead to the fact oxygen export concentration to reduce. In order to control the oxygen output pressure of the oxygen generator, the opening of the ball valve is manually adjusted, the opening of the ball valve is made smaller at the beginning, the oxygen concentration entering the oxygen tank is ensured to be greater than 90%, and then the opening of the ball valve is gradually increased along with the rising of the concentration in the oxygen tank. The adjusting method has high requirements on operators, needs to accurately control the opening of the ball valve, needs to be always stared on site by the operators, and is time-consuming and labor-consuming. At present, no device capable of intelligently adjusting the oxygen outlet pressure of the oxygen generator when the oxygen tank is started is available in the market.
Disclosure of Invention
In order to solve the problems that when the oxygen tank is started, the oxygen outlet pressure of the oxygen generator is time-consuming and labor-consuming to adjust manually on site, the invention provides the intelligent pressure adjusting device of the oxygen generator, when the oxygen tank is started for oxygen charging, a ball valve switch can be directly closed, oxygen flows out from micropores, the size of the micropores is matched with the oxygen generating capacity of the oxygen generator, the concentration of oxygen flowing into the oxygen tank can be ensured to be more than 90%, the operation is simple, and any person can operate the intelligent pressure adjusting device.
The technical scheme of the invention is as follows:
the utility model provides an oxygenerator intelligence regulator, is including being located the ball valve on the oxygen output pipeline, the ball valve front portion is equipped with preceding pipe connection spare, and the rear portion is equipped with back pipe connection spare, and the oxygen that makes flows through the ball valve from preceding pipe connection spare after from back pipe connection spare outflow, still be equipped with the choke valve between preceding pipe connection spare and the back pipe connection spare, the choke valve front end links to each other with preceding pipe connection spare through first hose, first hose has the micropore with the inside stopper of choke valve link, micropore external dimension and the cooperation of first hose internal diameter size, be equipped with one or more through-hole along oxygen flow direction in the micropore, oxygen passes from the through-hole in the micropore and gets into the choke valve.
Further, the inner diameter of the first hose is smaller than that of the front pipeline connecting piece. The micropore material stuffed in the porous material comprises polytetrafluoroethylene.
Preferably, a through hole is formed in the center of each micro hole, so that oxygen transmission is facilitated.
Furthermore, the size of the through hole in the micropore is 1.4-2 mm. The size of the through holes in the micropores can be determined according to the oxygen production amount of the oxygen generator per hour, and the size of the through holes in the micropores is continuously increased along with the increase of the oxygen production amount.
According to the intelligent pressure regulating device for the oxygen generator, the rear end of the throttle valve is connected with the rear pipeline connecting piece through the second hose, and the first hose and the second hose are parallel to the ball valve.
According to the intelligent pressure regulating device for the oxygen generator, the front pipeline connecting piece comprises a three-way joint.
As above oxygenerator intelligent pressure regulating device, be connected with oxygen sampling relief pressure valve on the back pipe connection spare at ball valve rear portion, oxygen sampling relief pressure valve rear end is connected with oxygen analyzer for the oxygen concentration of the back pipe connection spare of assay flow through. Preferably, the rear pipeline connecting piece comprises a four-way joint, and is convenient for connecting the ball valve, the second hose, the oxygen sampling pressure reducing valve and the oxygen outlet pipeline.
Compared with the prior art, the invention has the advantages that: the invention relates to an intelligent pressure regulating device of an oxygen generator, wherein a three-way joint and a four-way joint are respectively arranged at the front and the rear of a ball valve, a second oxygen transmission channel is built between the three-way joint and the four-way joint and comprises a first hose, a second hose and a throttle valve, micropores are arranged in the first hose to control the concentration of an oxygen outlet, when an oxygen tank is started to be oxygenated, a ball valve switch can be directly closed to enable oxygen to flow out from the micropores, the size of the micropores is matched with the oxygen generating capacity of the oxygen generator, the oxygen concentration flowing into the oxygen tank can be ensured to be more than 90%, and compared with the existing mode requiring skilled and accurate operation, the intelligent pressure regulating device is.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
fig. 1 is a schematic structural diagram of an intelligent pressure regulating device of an oxygen generator in embodiment 1;
FIG. 2 is a partial enlarged view of the location of micropores in example 1;
FIG. 3 is a schematic view of the structure of micropores in example 1;
the components represented by the reference numerals in the figures are:
1. the device comprises a ball valve, 2, a three-way joint, 3, a four-way joint, 4, an oxygen sampling pressure reducing valve, 5, a pipe joint, 6, an elbow, 7, a first hose, 8, a second hose, 9, a throttle valve, 10 and a micropore.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
The directions "front and back", "left and right", etc. mentioned in the present invention are only used to express the relative positional relationship, and are not restricted by any specific directional references in practical application.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of an intelligent pressure regulating device of an oxygen generator in this embodiment 1, including a ball valve 1 located on an oxygen output pipeline, the front portion of the ball valve 1 is connected with a three-way joint 2 through a pipe joint 5, the rear portion of the ball valve is connected with a four-way joint 3 through the pipe joint 5, oxygen produced by the oxygen generator flows through the ball valve 1 from the three-way joint 2 and then flows out from the rear end of the four-way joint 3, which is a first oxygen output pipeline.
Furthermore, the opening at the upper end of the three-way joint 2 is connected with a first hose 7, the opening at the upper end of the four-way joint 3 is connected with a second hose 8, a throttle valve 9 is connected between the first hose 7 and the second hose 8, a micropore 10 is plugged inside the connecting end of the first hose 7 and the throttle valve 9, and the outer size of the micropore 10 is matched with the inner diameter of the first hose 7, as shown in fig. 2. One or more through holes are arranged in the micro holes 10 along the oxygen flow direction, and oxygen can pass through the through holes in the micro holes 10 and enter the throttling valve 9. This is the second oxygen output line.
In this embodiment, the inner diameter of the first hose 7 is smaller than that of the three-way joint 2, and the oxygen output pipeline which is lowered layer by layer facilitates the output of oxygen from the micropores 10.
Referring to fig. 3, a through hole is formed at the center of the micro-hole 10 to facilitate oxygen transmission. The material of the micropores 10 is non-toxic polytetrafluoroethylene.
Furthermore, the size of the through hole in the micropore 10 is 1.4-2 mm. The size of the through holes in the micropores 10 is continuously increased along with the increase of the oxygen production amount. At the same time, the throttle valve 9 connected to the micro bore 10 can also be fine-tuned for the oxygen concentration flowing through it.
In this embodiment, between three way connection 2 and first hose 7 to and between four way connection 3 and second hose 8, all be connected with right angle coupling 5, so, can guarantee first hose 7 and second hose 8 are in the horizontal direction, and are parallel with ball valve 1 direction. The field installation arrangement and the oxygen transmission are convenient.
In this embodiment, 3 right-hand members of four way connection are connected with ball valve 1, and the top is connected with coupling 5 and second hose 8, and the left side is connected with oxygen outlet pipe, and the below is connected with oxygen sampling relief pressure valve 4, oxygen sampling relief pressure valve 4 rear end is connected with the oxygen analysis appearance for the oxygen concentration of the analysis flow through four way connection 3.
Of course, the four-way joint 3 can be replaced by two three-way joints, and the same effect can be achieved.
The oxygenerator intelligent pressure regulating device of this embodiment can have a power failure in the hospital, perhaps the oxygen jar is when beginning, uses when the oxygen jar internal pressure is 0 promptly, during the use, closes ball valve 1, makes first oxygen output pipeline not circulate, lets oxygen walk second oxygen output pipeline. At this time, oxygen flows into the first hose 7 from the upper part of the three-way joint 2, flows into the throttle valve 9 from the micropore 10 in the first hose 7, and through the adjustment of the micropore 10 and the throttle valve 9, the oxygen concentration entering the second hose 8 is made to be more than 90%, and high-concentration oxygen is transmitted to the oxygen output pipeline from the left side of the four-way joint 3 and enters the oxygen tank.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. The utility model provides an oxygenerator intelligence pressure regulating device, is including ball valve (1) that is located oxygen output pipeline, a serial communication port, ball valve (1) front portion is equipped with preceding pipe connection spare, and the rear portion is equipped with back pipe connection spare, and the oxygen that makes flows through ball valve (1) from preceding pipe connection spare and flows out from back pipe connection spare, still be equipped with choke valve (9) between preceding pipe connection spare and the back pipe connection spare, choke valve (9) front end links to each other with preceding pipe connection spare through first hose (7), first hose (7) have micropore (10) with inside the stopper of choke valve (9) link, it is equipped with one or more through-holes to follow oxygen flow direction in micropore (10).
2. The intelligent pressure regulating device of an oxygen generator as claimed in claim 1, wherein the inner diameter of the first hose (7) is smaller than the inner diameter of the front pipe connector.
3. The intelligent pressure regulating device of the oxygen generator as claimed in claim 2, wherein the material of the micropores (10) comprises polytetrafluoroethylene.
4. The intelligent pressure regulating device of the oxygen generator as claimed in any one of claims 1 to 3, wherein a through hole is formed in the center of the micropore (10).
5. The intelligent pressure regulating device of the oxygen generator as claimed in claim 4, wherein the size of the through hole in the micropore (10) is 1.4-2 mm.
6. The intelligent pressure regulating device of the oxygen generator as claimed in claim 1, wherein the rear end of the throttle valve (9) is connected with a rear pipeline connector through a second hose (8), and the first hose (7) and the second hose (8) are parallel to the ball valve (1).
7. The intelligent pressure regulating device of oxygen generator as claimed in claim 1 or 6, wherein said front pipe connection comprises a tee fitting (2).
8. The intelligent pressure regulating device of the oxygen generator as claimed in claim 1 or 6, wherein the rear pipe connector at the rear part of the ball valve is connected with an oxygen sampling pressure reducing valve (4).
9. The intelligent pressure regulating device of oxygen generator as claimed in claim 8, wherein said rear pipe connector comprises a four-way joint (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275457.5A CN112327956B (en) | 2020-11-16 | 2020-11-16 | Intelligent pressure regulating device of oxygen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275457.5A CN112327956B (en) | 2020-11-16 | 2020-11-16 | Intelligent pressure regulating device of oxygen generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112327956A true CN112327956A (en) | 2021-02-05 |
| CN112327956B CN112327956B (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011275457.5A Active CN112327956B (en) | 2020-11-16 | 2020-11-16 | Intelligent pressure regulating device of oxygen generator |
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| CN (1) | CN112327956B (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1098006A (en) * | 1977-07-05 | 1981-03-24 | Bendix Corporation (The) | Oxygen regulator |
| US4567971A (en) * | 1982-06-23 | 1986-02-04 | Deere & Company | Hydraulic circuit for activating a clutch and a throttle valve used in the circuit |
| US4750485A (en) * | 1985-08-05 | 1988-06-14 | Respirator Research Ltd. | Portable emergency breathing apparatus |
| JPH0686107U (en) * | 1993-05-26 | 1994-12-13 | 株式会社コガネイ | Pressure reducing valve |
| JPH0921384A (en) * | 1995-07-05 | 1997-01-21 | Fuji Koki:Kk | Pressure regulating valve |
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| US20140013954A1 (en) * | 2011-03-25 | 2014-01-16 | Fujikura Rubber Ltd. | Oxygen tank unit for oxygen enricher |
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| CN104671213A (en) * | 2015-03-12 | 2015-06-03 | 肖永初 | Closed-loop system oxygenator and flow/concentration regulating closed-loop control system thereof |
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| CN206889204U (en) * | 2017-06-29 | 2018-01-16 | 中国工程物理研究院总体工程研究所 | Quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand |
| CN208619767U (en) * | 2018-07-03 | 2019-03-19 | 脉象医疗科技(苏州)有限公司 | A kind of medical molecular-sieve oxygen generator electromagnetism valve oxygen flow regulating device |
| CN209052401U (en) * | 2018-10-17 | 2019-07-02 | 湖南一特电子医用工程股份有限公司 | A kind of device for avoiding medical oxygen generator from generating low pressure unpure oxygen |
| CN210366987U (en) * | 2019-08-06 | 2020-04-21 | 济源正宇实业有限公司 | Oxygen generator for glass production |
| CN210620244U (en) * | 2019-09-12 | 2020-05-26 | 山东泰山钢铁集团有限公司 | High-efficient starting device of oxygenerator |
| CN210736206U (en) * | 2019-09-02 | 2020-06-12 | 济源向前玻璃制品有限公司 | Oxygen supply device for producing medicinal glass tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH667211A5 (en) * | 1985-05-21 | 1988-09-30 | Maag Technic Ag | Oxygen supply and breathing appts. - has mask connected by flexible hose to valve block which is attached to bottle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1098006A (en) * | 1977-07-05 | 1981-03-24 | Bendix Corporation (The) | Oxygen regulator |
| US4567971A (en) * | 1982-06-23 | 1986-02-04 | Deere & Company | Hydraulic circuit for activating a clutch and a throttle valve used in the circuit |
| US4750485A (en) * | 1985-08-05 | 1988-06-14 | Respirator Research Ltd. | Portable emergency breathing apparatus |
| JPH0686107U (en) * | 1993-05-26 | 1994-12-13 | 株式会社コガネイ | Pressure reducing valve |
| JPH0921384A (en) * | 1995-07-05 | 1997-01-21 | Fuji Koki:Kk | Pressure regulating valve |
| US20070039466A1 (en) * | 2003-08-26 | 2007-02-22 | Teijin Pharma Limited | Oxygen concentration apparatus |
| CN201722142U (en) * | 2010-06-24 | 2011-01-26 | 杭州明晨气体设备有限公司 | Oxygen generator with automatic start and stop function |
| US20140013954A1 (en) * | 2011-03-25 | 2014-01-16 | Fujikura Rubber Ltd. | Oxygen tank unit for oxygen enricher |
| CN202173548U (en) * | 2011-04-08 | 2012-03-28 | 北京中交海神救险制品有限公司 | Soft oxygen chamber used with oxygenator |
| CN104627965A (en) * | 2013-11-07 | 2015-05-20 | 佛山市凯亚医疗科技有限公司 | Oxygen producing machine |
| CN204324871U (en) * | 2014-11-28 | 2015-05-13 | 浙江善时生物药械(商丘)有限公司 | The device of fast lifting medical oxygen generator oxygen concentration |
| CN204287800U (en) * | 2014-11-28 | 2015-04-22 | 浙江善时生物药械(商丘)有限公司 | Make the device of defective medical oxygen automatic evacuation |
| CN104671213A (en) * | 2015-03-12 | 2015-06-03 | 肖永初 | Closed-loop system oxygenator and flow/concentration regulating closed-loop control system thereof |
| CN205773326U (en) * | 2016-02-02 | 2016-12-07 | 查特生物医疗（成都）有限公司 | A kind of oxygenerator of band throttle orifice |
| CN206635026U (en) * | 2017-02-24 | 2017-11-14 | 方富友 | A kind of oxygen making machine molecular sieve adsorption tower end cap adjusting means |
| CN107055478A (en) * | 2017-05-03 | 2017-08-18 | 辽宁沃德玛克工业设备制造有限公司 | A kind of molecular-sieve oxygen generator |
| CN206889204U (en) * | 2017-06-29 | 2018-01-16 | 中国工程物理研究院总体工程研究所 | Quantitative fuel supply flow rate adjusting means for piston cooling nozzle performance test stand |
| CN208619767U (en) * | 2018-07-03 | 2019-03-19 | 脉象医疗科技(苏州)有限公司 | A kind of medical molecular-sieve oxygen generator electromagnetism valve oxygen flow regulating device |
| CN209052401U (en) * | 2018-10-17 | 2019-07-02 | 湖南一特电子医用工程股份有限公司 | A kind of device for avoiding medical oxygen generator from generating low pressure unpure oxygen |
| CN210366987U (en) * | 2019-08-06 | 2020-04-21 | 济源正宇实业有限公司 | Oxygen generator for glass production |
| CN210736206U (en) * | 2019-09-02 | 2020-06-12 | 济源向前玻璃制品有限公司 | Oxygen supply device for producing medicinal glass tube |
| CN210620244U (en) * | 2019-09-12 | 2020-05-26 | 山东泰山钢铁集团有限公司 | High-efficient starting device of oxygenerator |
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| Publication number | Publication date |
|---|---|
| CN112327956B (en) | 2023-03-14 |
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Denomination of invention: An intelligent pressure regulating device for oxygen concentrators Granted publication date: 20230314 Pledgee: Postal Savings Bank of China Limited Jinan Branch Pledgor: Shandong still Medical Technology Co.,Ltd. Registration number: Y2024980014900 |