CN214528139U - Energy-saving oxygen generator - Google Patents
Energy-saving oxygen generator Download PDFInfo
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- CN214528139U CN214528139U CN202120665030.XU CN202120665030U CN214528139U CN 214528139 U CN214528139 U CN 214528139U CN 202120665030 U CN202120665030 U CN 202120665030U CN 214528139 U CN214528139 U CN 214528139U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses an energy-saving oxygenerator relates to oxygen generating equipment technical field, and mainly used solves the problem that current PSA oxygenerator can consume a large amount of energy when preparing high-purity oxygen. The main structure is as follows: including the buffer tank that admits air, air compressor, filtration cooling module, air buffer tank exit end parallel connection has two adsorption towers, and two adsorption tower exit ends are connected with the oxygen buffer tank jointly, and oxygen buffer tank exit end parallel connection has product gas pipeline and unqualified gas pipeline, and two adsorption tower exit ends still are connected with the oxygen-enriched gas buffer tank, and the oxygen-enriched gas buffer tank exit end is connected with the buffer tank that admits air. The utility model provides a pair of energy-saving oxygenerator, the oxygen-enriched gas after will the equalized pressure retrieves and send into the air inlet buffer tank, increases air compressor export oxygen concentration, reduces air compressor load, reaches energy-conserving purpose, also is favorable to the plateau system oxygen simultaneously.
Description
Technical Field
The utility model relates to an oxygen generating equipment technical field especially relates to an energy-saving oxygenerator.
Background
The existing PSA oxygen generator mainly adopts a pressure swing adsorption air separation oxygen generation technology to prepare oxygen. In the pressure swing adsorption oxygen production technology, air is generally used as a raw material gas, and the air is purified, separated and sieved to finally obtain high-concentration fresh oxygen. The technology comprises two-tower, three-tower and multi-tower processes, and the process comprises the working procedures of adsorption, uniform descending, reverse discharging, purging, pressure boosting, final charging, adsorption and the like. Finally, the product oxygen is continuously sent out from the top of the adsorption tower. However, the existing pressure swing adsorption oxygen production technology generally has the following disadvantages:
the existing PSA oxygen generator consumes a large amount of energy when preparing high-purity oxygen. And, as the altitude of the oxygen generator rises, the air becomes thinner and thinner, and at this time, the oxygen generator needs to consume more energy in order to reach the oxygen production equivalent to that in the low altitude area.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy-saving oxygenerator, the oxygen-enriched gas after will the equalized pressure retrieves and send into the air inlet buffer tank, increases air compressor export oxygen concentration, reduces air compressor load, reaches energy-conserving purpose and also is favorable to the plateau system oxygen simultaneously.
The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides an energy-saving oxygenerator, is including the buffer tank that admits air that can input fresh air, the buffer tank exit end that admits air has connected gradually air compressor, filtration cooling module, air buffer tank exit end parallel connection has two adsorption towers, two the adsorption tower exit end is connected with the oxygen buffer tank jointly, oxygen buffer tank exit end parallel connection has product gas pipeline and unqualified gas pipeline, two the adsorption tower exit end still is connected with the oxygen-enriched gas buffer tank through the oxygen-enriched gas recovery pipeline, the oxygen-enriched gas buffer tank exit end is connected with the buffer tank that admits air.
As a further improvement of the utility model, the filtering and cooling module comprises a C-level filter, a cold dryer and an active carbon filter which are connected in sequence.
As a further improvement of the utility model, a T-level filter and an A-level filter which are connected in sequence are arranged between the cold dryer and the activated carbon filter.
As a further improvement, the outlet end of the air buffer tank is connected with an instrument air source pipeline, and the instrument air source pipeline is provided with a switch valve.
As a further improvement, the utility model discloses a two first control flap is all installed to the entrance point and the exit end of adsorption tower.
As a further improvement, two the entrance point of the adsorption tower is connected with the muffler through a pressure relief pipeline, and a fourth control valve is arranged on the pressure relief pipeline.
As a further improvement, the utility model discloses a two the exit end of adsorption tower still sweeps the tube coupling through one, it sweeps the flow valve door to be equipped with on the pipeline to sweep.
As a further improvement, two on the oxygen-enriched gas recovery pipeline between adsorption tower and the oxygen-enriched gas buffer tank, on the product gas pipeline, all be equipped with second control flap on the unqualified gas pipeline, be equipped with third control flap on the oxygen-enriched gas recovery pipeline between oxygen-enriched gas buffer tank and the inlet buffer tank.
As a further improvement, the oxygen buffer tank outlet end is connected with the filter, the filter outlet end is connected with oxygen concentration analyzer sample pipeline, product gas pipeline and unqualified gas pipeline in parallel, oxygen concentration analyzer sample pipeline is connected with oxygen concentration analyzer.
As a further improvement of the utility model, the oxygen concentration analyzer is connected with the PLC control system.
Advantageous effects
Compared with the prior art, the utility model discloses an energy-saving oxygenerator's advantage does:
1. the utility model discloses when making oxygen, send into the buffer tank that admits air earlier fresh air to send into air compressor after the first buffering in, the air forms high temperature high-pressure gas after through the compression. And the high-temperature and high-pressure gas enters the filtering and cooling module, is purified and cooled, and is sent into the air buffer tank after being purified and cooled. Carry out the steady voltage to the air through the air buffer tank, the air after the steady voltage is sent into in one of them or two adsorption towers and is stepped up, adsorb to send into the oxygen buffer tank with adsorbed product oxygen and cushion. After buffering, the oxygen with qualified concentration is sent into a gas using system through a product gas pipeline, and the oxygen with unqualified concentration is discharged through an unqualified gas pipeline. In the whole oxygen production process, pressure equalizing treatment can be carried out between the two adsorption towers. After the primary pressure equalization is finished, the oxygen concentration at the upper part of the adsorption tower is between 35 and 45 percent and is higher than the oxygen content in the ambient air. At the moment, part of the oxygen-enriched gas on the upper part of the adsorption tower after primary pressure equalization is finished is collected through an oxygen-enriched gas recovery pipeline and an oxygen-enriched gas buffer tank. Then, the oxygen-enriched gas collected by the oxygen-enriched gas buffer tank is sent into the air inlet buffer tank to be mixed with the raw material air. Finally, the mixed gas is sent to an air compressor. After the process is finished, the concentration of oxygen at the outlet of the air compressor is 3-5% higher than that of oxygen in the air, and the load of the compressor and the dosage of the adsorbent are reduced under the condition of the same oxygen production amount, so that the aim of saving energy is fulfilled. In addition, because the oxygen is thin on the plateau, the power of the air compressor is high for compressing the same amount of oxygen, so the action point of the device for reducing the power of the air compressor has obvious technical advantages when the device is used for oxygen generation on the plateau.
2. The filtering and cooling module comprises a C-grade filter, a cold dryer and an active carbon filter which are sequentially connected. And a T-grade filter and an A-grade filter which are sequentially connected are also arranged between the cold dryer and the activated carbon filter. High temperature high pressure air after air compressor compression carries out the prefilter back through C level filter, is cooled down the drying by cold machine to continue to be filtered by T level filter and A level filter after cooling down the drying, make the filtration of air more thorough, and then make the air better at the adsorption effect who enters into behind the adsorption tower through the air buffer tank.
3. The outlet end of the air buffer tank is also connected with an instrument air source pipeline, and a switch valve is arranged on the instrument air source pipeline, so that high-pressure air containing oxygen can be directly sent into other gas appliances according to use requirements, and the use under other states can be met.
4. First control valves are arranged at the inlet ends and the outlet ends of the two adsorption towers, so that the air inlet and the air outlet of the two adsorption towers can be independently controlled. In the oxygen generation process, the two adsorption towers can be switched to continuously generate oxygen, and the two adsorption towers can also generate oxygen together; when two adsorption towers switch and make oxygen in succession, when one of them adsorption tower carried out the pressure boost, absorption, another adsorption tower accessible pressure-equalizing, evacuation, sweep adsorbed gas in the adsorbent of discharging prepared for next absorption to make whole system oxygen in-process need not shut down, guarantee the efficiency of system oxygen.
5. The inlet ends of the two adsorption towers are connected with a silencer through pressure relief pipelines, and fourth control valves are arranged on the pressure relief pipelines. When two adsorption towers need carry out the pressure release, the muffler can carry out the pressure release in-process noise reduction at the adsorption tower, makes whole system oxygen in-process more quiet, avoids causing noise pollution to the surrounding environment.
6. And a second control valve is arranged on an oxygen-enriched gas recovery pipeline between the two adsorption towers and the oxygen-enriched gas buffer tank, and the on/off of the oxygen-enriched gas recovery system can be controlled through the second control valve. Meanwhile, a third control valve and an adjusting valve are arranged on an oxygen-enriched gas recovery pipeline between the oxygen-enriched gas buffer tank and the air inlet buffer tank, and oxygen-enriched gas can enter the air inlet buffer tank to be mixed with raw material air at stable pressure and flow after being processed by the adjusting valve and then enters an inlet of the air compressor.
7. On the product gas pipeline, all be equipped with the second control flap on the unqualified gas pipeline, conveniently open and close product gas pipeline and unqualified gas pipeline. Meanwhile, unqualified gas can be prevented from being sent into a gas using system or qualified gas can be prevented from being sent into an unqualified gas pipeline.
8. The oxygen buffer tank outlet end still is connected with the filter, and the filter outlet end is parallelly connected with oxygen concentration analysis appearance sample pipeline, product gas pipeline and unqualified gas pipeline, and wherein oxygen concentration analysis appearance sample pipeline is connected with oxygen concentration analysis appearance. The oxygen concentration analyzer is connected with a PLC control system. Through setting up oxygen concentration analysis appearance, can detect the concentration of product oxygen to give PLC control system after detecting. Meanwhile, the filter is arranged at the outlet end of the oxygen buffer tank, so that oxygen stabilized by the oxygen buffer tank can be filtered again through the filter, and the prepared oxygen meets the use requirement of the gas system.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow diagram of an oxygen plant of the present invention.
Wherein: 1-an air inlet buffer tank; 2-an air compressor; a grade 3-C filter; 4-a cold dryer; a 5-T grade filter; a 6-class A filter; 7-an activated carbon filter; 8-an air buffer tank; 9-an adsorption column; 10-a silencer; 11-a first control valve; 12-an oxygen buffer tank; 13-oxygen concentration analyzer; 14-a PLC control system; 15-a filter; 16-product gas line; 17-off-spec product gas pipeline; 18-instrument gas source line; 19-switching the valve; 20-an oxygen-enriched gas recovery pipeline; 21-oxygen-enriched gas buffer tank; 22-a second control valve; 23-a third control valve; 24-a pressure relief line; 25-a fourth control valve; 26-a purge line; 27-purge flow valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; of course, mechanical connection and electrical connection are also possible; alternatively, they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Examples
The specific implementation mode of the utility model is shown in figure 1, and the energy-saving oxygen generator comprises an air inlet buffer tank 1 which can input fresh air. The outlet end of the air inlet buffer tank 1 is sequentially connected with an air compressor 2, a filtering and cooling module and an air buffer tank 8. The outlet end of the air buffer tank 8 is connected with two adsorption towers 9 in parallel, and the outlet ends of the two adsorption towers 9 are connected with an oxygen buffer tank 12. The outlet end of the oxygen buffer tank 12 is connected in parallel with a product gas pipeline 16 and an unqualified gas pipeline 17. The outlet ends of the two adsorption towers 9 are also connected with an oxygen-enriched gas buffer tank 21 through an oxygen-enriched gas recovery pipeline 20. The outlet end of the oxygen-enriched gas buffer tank 21 is connected with the air inlet buffer tank 1.
In the oxygen production process, fresh air is firstly sent into the air inlet buffer tank 1 and then sent into the air compressor 2 after primary buffering, and the air forms high-temperature and high-pressure gas after being compressed. The high-temperature high-pressure gas enters the filtering and cooling module for purification and cooling, and is sent into the air buffer tank 8 after being purified and cooled. Air is stabilized through the air buffer tank 8, the air after being stabilized is sent into one or two adsorption towers 9 to be boosted and adsorbed, and the adsorbed product oxygen is sent into the oxygen buffer tank 12 to be buffered. After buffering, oxygen of acceptable concentration is fed to the gas utilization system through product gas line 16, and oxygen of unacceptable concentration is discharged through off-specification gas line 17. In the whole oxygen production process, pressure equalizing treatment can be carried out between the two adsorption towers 9. After the primary pressure equalization is finished, the oxygen concentration at the upper part of the adsorption tower 9 is between 35 and 45 percent and is higher than the oxygen content in the ambient air. At this time, part of the oxygen-enriched gas in the upper part of the adsorption column 9 after the completion of the primary pressure equalization is collected by the oxygen-enriched gas recovery line 20 and the oxygen-enriched gas buffer tank 21. Then, the oxygen-enriched gas collected in the oxygen-enriched gas buffer tank 21 is sent to the intake gas buffer tank 1 to be mixed with the raw material air. Finally, the mixed gas is sent to the air compressor 2. Moreover, because the oxygen is thin on the plateau, the power of the air compressor 2 for compressing the same amount of oxygen is high, so the action point of the device for reducing the power of the air compressor 2 has obvious technical advantages when the device is used for oxygen generation on the plateau.
After the process is finished, the concentration of oxygen at the outlet of the air compressor 2 is 3-5% higher than that in the air, and the load of the compressor and the dosage of the adsorbent are reduced under the condition of the same oxygen production amount, so that the aim of saving energy is fulfilled. Specifically, the power consumption of the air compressor 2 can be reduced by 23% by using the device under the condition of the same oxygen production amount.
Wherein, filter cooling module is including C level filter 3, cold dry machine 4 and active carbon filter 7 that connect gradually. A T-stage filter 5 and an A-stage filter 6 which are connected in sequence are also arranged between the cold dryer 4 and the activated carbon filter 7. High temperature high pressure air after air compressor 2 compression carries out the prefilter back through C level filter 3, is cooled down the drying by cold machine 4 to continue to be filtered by T level filter 5 and A level filter 6 after cooling down the drying, make the filtration of air more thorough, and then make the air better at the adsorption effect that enters into 9 back in the adsorption tower through air buffer tank 8.
In this embodiment, the outlet end of the air buffer tank 8 is also connected with an instrument air source pipeline 18, and a switch valve 19 is arranged on the instrument air source pipeline 18, so that high-pressure air containing oxygen can be directly sent into other gas appliances according to the use requirements, and further the use under other states is satisfied. In this embodiment, the instrument gas is used as a power source for controlling the opening and closing of the valve.
Moreover, the inlet ends and the outlet ends of the two adsorption towers 9 are respectively provided with a first control valve 11, so that the air inlet and the air outlet of the two adsorption towers 9 can be independently controlled. In the oxygen production process, the two adsorption towers 9 can be switched to produce oxygen continuously, and the two adsorption towers 9 can also produce oxygen together; when two adsorption towers 9 switch and make oxygen in succession, when one of them adsorption tower 9 steps up, adsorbs, the adsorbed gas in another adsorption tower 9 accessible pressure-equalizing, evacuation, the purge discharge adsorbent is prepared for next absorption to make whole system oxygen in-process need not shut down, guarantee the efficiency of system oxygen.
Meanwhile, the inlet ends of the two adsorption towers 9 are connected with a silencer 10 through a pressure relief pipeline 24, and a fourth control valve 25 is arranged on the pressure relief pipeline 24. When the pressure in two adsorption towers 9 is too big and need carry out the pressure release, muffler 10 can carry out the in-process noise reduction of pressure release at adsorption tower 9, makes whole system oxygen in-process more quiet, avoids causing noise pollution to the surrounding environment.
In this embodiment, the outlet ends of the two adsorption towers 9 are further connected through a purge pipeline 26, and a purge flow valve 27 is arranged on the purge pipeline 26.
In addition, a second control valve 22 is arranged on the oxygen-enriched gas recovery pipeline 20 between the two adsorption towers 9 and the oxygen-enriched gas buffer tank 21, and the on/off of the oxygen-enriched gas recovery system can be controlled through the second control valve 22. Meanwhile, a third control valve 23 and an adjusting valve are arranged on an oxygen-enriched gas recovery pipeline 20 between the oxygen-enriched gas buffer tank 21 and the air inlet buffer tank 1, and oxygen-enriched gas can enter the air inlet buffer tank 1 to be mixed with raw material air at stable pressure and flow after being processed by the adjusting valve and then enters an inlet of the air compressor 2.
In this embodiment, on the product gas pipeline 16, all be equipped with second control valve 22 on the unqualified gas pipeline 17, conveniently open and close product gas pipeline 16 and unqualified gas pipeline 17. Meanwhile, it is possible to prevent the unqualified gas from being sent into the gas using system or the qualified gas from being sent into the unqualified gas piping 17.
It should be noted that:
the outlet end of the oxygen buffer tank 12 is also connected with a filter 15, and the outlet end of the filter 15 is connected in parallel with a sampling pipeline of an oxygen concentration analyzer, a product gas pipeline 16 and an unqualified gas pipeline 17. Wherein, the sampling pipeline of the oxygen concentration analyzer is connected with the oxygen concentration analyzer 13. The oxygen concentration analyzer 13 is connected with a PLC control system 14, and the PLC control system controls the on-off of all control valves except the manual valve in the device. By arranging the oxygen concentration analyzer 13, the concentration of the product oxygen can be detected, and the detected product oxygen is transmitted to the PLC control system 14. Meanwhile, the filter 15 is arranged at the outlet end of the oxygen buffer tank 12, so that oxygen stabilized by the oxygen buffer tank 12 can be filtered again through the filter 15, and the prepared oxygen can meet the use requirement of the gas system.
Specifically, the effect of the present apparatus can be obtained from the following series of data.
1. Implementation effect at altitude of 500m
The technical indexes of the device compared with the conventional PSA oxygen generator are as follows:
a. under the same oxygen production condition:
b. under the condition that the compressor is unchanged:
2. implementation effect at an altitude of 2500m
The technical indexes of the device compared with the conventional PSA oxygen generator are as follows:
a. under the same oxygen production condition:
b. under the condition that the compressor is unchanged:
3. implementation effect at altitude of 3500m
The technical indexes of the device compared with the conventional PSA oxygen generator are as follows:
a. under the same oxygen production condition:
b. under the condition that the compressor is unchanged:
as can be seen from the data in the table, when the oxygen yield is certain, the energy consumption of the air compressor 2 can be obviously reduced by using the device, when the power of the air compressor 2 is certain, the oxygen yield of the device is obviously higher than that of a conventional device, and along with the increase of the altitude, the increase of the oxygen yield is especially obvious.
The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the above-disclosed embodiments, and various modifications, equivalent combinations, which are made according to the essence of the present invention, should be covered.
Claims (10)
1. The utility model provides an energy-saving oxygenerator, its characterized in that, including the buffer tank (1) of admitting air that can input fresh air, buffer tank (1) exit end of admitting air has connected gradually air compressor (2), filters cooling module, air buffer tank (8) exit end parallel has two adsorption towers (9), two adsorption tower (9) exit end connects jointly has oxygen buffer tank (12), oxygen buffer tank (12) exit end parallel has product gas pipeline (16) and unqualified gas pipeline (17), two adsorption tower (9) exit end still is connected with oxygen-enriched gas buffer tank (21) through oxygen-enriched gas recovery pipeline (20), oxygen-enriched gas buffer tank (21) exit end is connected with buffer tank (1) of admitting air.
2. The energy-saving oxygen generation device according to claim 1, wherein the filtering and cooling module comprises a C-stage filter (3), a freeze dryer (4) and an activated carbon filter (7) which are connected in sequence.
3. An energy-saving oxygen generation device according to claim 2, characterized in that a T-stage filter (5) and an A-stage filter (6) are arranged between the cold dryer (4) and the activated carbon filter (7) and are connected in sequence.
4. The energy-saving oxygen generating device according to claim 1, characterized in that the outlet end of the air buffer tank (8) is further connected with an instrument air source pipeline (18), and the instrument air source pipeline (18) is provided with a switch valve (19).
5. An energy-saving oxygen generating device according to claim 1, characterized in that the inlet and outlet ends of the two adsorption towers (9) are provided with first control valves (11).
6. The energy-saving oxygen generator according to claim 1, wherein the inlet ends of the two adsorption towers (9) are connected with the silencer (10) through a pressure relief pipeline (24), and a fourth control valve (25) is arranged on the pressure relief pipeline (24).
7. An energy-saving oxygen generating device according to claim 1, characterized in that the outlet ends of the two adsorption towers (9) are further connected through a purging pipeline (26), and the purging pipeline (26) is provided with a purging flow valve (27).
8. The energy-saving oxygen generator according to claim 1, wherein a second control valve (22) is arranged on the oxygen-enriched gas recovery pipeline (20) between the two adsorption towers (9) and the oxygen-enriched gas buffer tank (21), the product gas pipeline (16) and the unqualified gas pipeline (17), and a third control valve (23) is arranged on the oxygen-enriched gas recovery pipeline (20) between the oxygen-enriched gas buffer tank (21) and the inlet gas buffer tank (1).
9. The energy-saving oxygen generation device according to any one of claims 1 to 8, characterized in that a filter (15) is connected to the outlet end of the oxygen buffer tank (12), and a sampling line of an oxygen concentration analyzer, a product gas pipeline (16) and a reject gas pipeline (17) are connected in parallel to the outlet end of the filter (15), and the sampling line of the oxygen concentration analyzer is connected with the oxygen concentration analyzer (13).
10. An energy-saving oxygen generating device according to claim 9, characterized in that the oxygen concentration analyzer (13) is connected with a PLC control system (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120665030.XU CN214528139U (en) | 2021-03-31 | 2021-03-31 | Energy-saving oxygen generator |
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| CN202120665030.XU CN214528139U (en) | 2021-03-31 | 2021-03-31 | Energy-saving oxygen generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784166A (en) * | 2022-12-13 | 2023-03-14 | 湖南卓誉科技有限公司 | Modularization system oxygen host |
| CN116603362A (en) * | 2023-05-19 | 2023-08-18 | 湖南比扬医疗科技有限公司 | Oxygenerator control system and oxygenerator |
-
2021
- 2021-03-31 CN CN202120665030.XU patent/CN214528139U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784166A (en) * | 2022-12-13 | 2023-03-14 | 湖南卓誉科技有限公司 | Modularization system oxygen host |
| CN115784166B (en) * | 2022-12-13 | 2024-04-12 | 湖南卓誉科技有限公司 | Modularized oxygen-making host |
| CN116603362A (en) * | 2023-05-19 | 2023-08-18 | 湖南比扬医疗科技有限公司 | Oxygenerator control system and oxygenerator |
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