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WO2019182530A2 - Compact portable oxygen system - Google Patents

Compact portable oxygen system Download PDF

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Publication number
WO2019182530A2
WO2019182530A2 PCT/TR2018/050667 TR2018050667W WO2019182530A2 WO 2019182530 A2 WO2019182530 A2 WO 2019182530A2 TR 2018050667 W TR2018050667 W TR 2018050667W WO 2019182530 A2 WO2019182530 A2 WO 2019182530A2
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
pressure
compressor
air
low
Prior art date
Application number
PCT/TR2018/050667
Other languages
French (fr)
Other versions
WO2019182530A3 (en
Inventor
Ata ÖZCAN
Original Assignee
Oezcan Ata
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oezcan Ata filed Critical Oezcan Ata
Publication of WO2019182530A2 publication Critical patent/WO2019182530A2/en
Publication of WO2019182530A3 publication Critical patent/WO2019182530A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M16/101—Preparation of respiratory gases or vapours with O2 features or with parameter measurement using an oxygen concentrator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0063—Compressors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • A61M16/209—Relief valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated
    • A61M2205/8212—Internal energy supply devices battery-operated with means or measures taken for minimising energy consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/12—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/102—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4541—Gas separation or purification devices adapted for specific applications for portable use, e.g. gas masks

Definitions

  • the invention relates to systems used in oxygen production.
  • the invention relates in particular to a compact portable oxygen system which produces high pressure medical oxygen from ambient air, having a mobile and a compact design with automatic and/or manual control, without needing air tanks and oxygen tanks, independent of copper piping systems and/or copper piping systems.
  • Increasing the pressure of the air absorbed by the compressor to 8 bars causes the system to consume more electricity.
  • compressors require 3-phase electrical sources to boost the ambient air pressure.
  • 79.1 % of the air obtained in 8 bars consists of nitrogen gas that we want to separate from oxygen. Since the nitrogen gas that is decomposed does not used for anything from there, it is discharged from the exhaust at the end of the process. In other words, electricity is also consumed to raise the nitrogen gas, which is not used by 80% of the time, to 8 bars.
  • the air obtained by the compressor is sent to the air tank serving as an expansion vessel. Even for an only one expansion vessel, the volume, the area it occupies and the weight of the system is increasing. Due to the weight and volume of the tanks, the transportation becomes also difficult.
  • the invention relates to a method and system of compression for supplying an oxygen enriched gas to a user of an oxygen concentrator wherein the oxygen concentrator comprises of at least two containers, a gas separation adsorbent placed in at least two containers, where the gas separation container is decomposed at least some nitrogen from the air in the tank to produce oxygen-enriched gas, and at least one compressor connected to at least one canister.
  • the present invention relates to a compact portable oxygen system that meets the above- mentioned requirements, eliminates all disadvantages and brings some additional advantages.
  • the fundamental purpose of the compact portable oxygen system is to create a compact mobilized system to provide lightness and ease of transportation.
  • Ambient air is absorbed and sent to the oxygen generator between the range of 0-1 bars. If the air production capacity of the low pressure air production source running in the range of 0 to 1 bar is as much as the amount of air consumption of the oxygen production generator, there is no need to use an air backup tank in the system.
  • the air we get at low pressure is sent directly to the oxygen generator. Pure medical oxygen is obtained by separating nitrogen gas from air at low pressure. Low pressure medical oxygen is obtained at an average value of 0,5 bar. The oxygen obtained is compressed by the compressor to increase the pressure to 4 bars.
  • valves and vanes used in the system it is ensured that the system has fixed 4 bar oxygen. In this way, when the oxygen outlet at the system output is closed or opened, constant pressure oxygen is provided. In this way, no oxygen backup tank is needed. Since there is no need for an air backup tank and/or an oxygen backup tank, the system is designed to be lightweight and small. The system is provided to be compact and portable.
  • Another purpose of the invention is to save energy.
  • the system operates at low pressure between 0-1 bar. Since no high pressures are needed, the compressor works less to produce the necessary oxygen.
  • the nitrogen gas that is separated in the system should not be increased to high pressures, unnecessary energy is not consumed. By using less energy, medical oxygen can be obtained at a pressure of 4 bar. Due to the automatic and/or manual flow switch, the system is stopped by avoiding unnecessary operation and it only works when necessary. The flow switch supports energy saving.
  • compact portable oxygen system for producing high pressure medical oxygen from ambient air to achieve all the advantages mentioned above and which will be understood from the following detailed description, wherein; compact portable oxygen system comprises,
  • oxygen generator that separates nitrogen gas from the low pressure air coming from low-pressure air source and provides pure oxygen
  • Figure - 1 A schematic view of a compact portable oxygen system of the invention.
  • the invention is a compact portable oxygen system (10) for producing high pressure medical oxygen from ambient air, wherein; it comprises,
  • an oxygen generator (12) that separates nitrogen gas from the low pressure air coming from low-pressure air source (1 1 ) and provides pure oxygen
  • FIG. 1 shows a schematic view of a compact portable oxygen system (10) of the invention.
  • the compact portable oxygen system (10 using low pressure air source (1 1 ) which operates at low pressure between 0 and 1 bar, low pressure air is produced and low electricity consumption is provided. Ambient air is absorbed by the low pressure air source (1 1 ) and sent to the oxygen generator (12). The amount of air production of the low pressure air source (1 1 ) is equal to the amount of air consumed by the oxygen generator (12).
  • At least one adjustable precision pressure regulator (13) is located between the oxygen generator (12) and the compressor (14).
  • Precision pressure regulator (13) is set to the maximum operating output pressure of the oxygen generator (12). Normally, when the oxygen generator (12) works above the maximum working pressure, it automatically stops to prevent damage. This issue leads to the degradation of purity in oxygen production and to the unwanted interruptions in the process of oxygen production.
  • the precision pressure regulator (13) releases excess oxygen, which causes high pressure on the line, into the environment when the oxygen generator (12) approaches towards its maximum pressure limit. In this way, it will be ensured that the oxygen generator (12) produces high purity oxygen and continues to operate in harmony with compressor (14) by keeping the pressure value in the line at the desired level.
  • the check valve (15) is positioned at the outlet of the compressor (14) in order to prevent the pressurized oxygen in the flow line (16) from returning back to the compressor (14).
  • a compact portable oxygen system (10) is provided with a constant 4 bar oxygen pressure.
  • the second precision pressure regulator (13) is located on the mobilized oxygen flow line (16) to prevent decrease in oxygen purity, to produce medical oxygen at constant 4 bar exit pressure, to prevent even stopping the production of oxygen and if the output control valve (18) positioned on the flow line (16) is closed while the compressor (14) is operating, the oxygen pressure above the 4 bar will be formed on the flow line (16) to prevent damage to the flow line (16) or the compressor (14).
  • the pressure value of the second precision pressure regulator (13) is adjusted to the maximum operating pressure of 4 bars of the oil-free high-pressure compressor (14).
  • the high pressure compressor (14) will want to increase the pressure of the oxygen above the 4 bars that will be sent to the flow line (16).
  • the compressor (14) will open the second precision pressure regulator (13) which is set to the maximum working pressure, will release the oxygen concentration that will be caused by the high pressure, and thus provide a fixed 4 bars oxygen in the flow line (16). Since the oxygen pressure in the flow line (16) falls below 4 bars when the output control valve (18) of the compact mobile oxygen system (10) is re-opened, for example, when the operation is resumed, the second precision pressure regulator (13) is then closed again to fix the oxygen pressure to the 4 bars in the compact mobile oxygen system (10). In this way, when the output control valve (18) at the outlet of the compact mobile oxygen system (10) is closed and/or opened, continuous and constant pressured high purity oxygen production is provided.
  • the compact portable oxygen system (10) With a switch(17) connected to the output of the flow line (16), the compact portable oxygen system (10) becomes to have automatic start-up and automatic stop control functions.
  • the output control valve (18) at the outlet of the compact portable oxygen system (10) is open and oxygen flows from the flow line (16)
  • the dry contact of the switch (17) is in the closed position and the compact portable oxygen system (10) continues to operate.
  • the switch (17) for the flow path is switched on to engage a time limit relay. If there is no oxygen flow in a given time, the time limit relay stops the compact portable oxygen system (10). In this way, the compact portable oxygen system (10) does not work in vain.
  • the check valve (15) is positioned at the outlet of the compressor (14) in order to prevent the pressurized oxygen in the flow line (16) from returning back to the compressor (14) and to prevent the decrease in the pressure of oxygen in the flow line (16).
  • the outlet of the flow line (16) is provided with a constant 4 bars oxygen pressure.
  • the automatic start-up mechanism is as follows. When the output control valve (18) which is one end of the system oxygen flow line (16) is closed and the check valve (15) which is positioned to the other end is preventing the back flow, the pressure of the oxygen gas in the flow line (16) is normally at 4 bars. However, since the switch (17) has no oxygen flow, the dry contact is in the open position and the system is at rest. When the output control valve (18) is opened, oxygen in 4 bars of pressure on the output line passes through the switch (17) and takes the dry contact end of the switch (17) to the closed position. This starts to operate the compact portable oxygen system (10). In this way, when oxygen is needed, the compact mobilized oxygen system (10) automatically generates oxygen gas or when oxygen is not needed, the compact mobilized oxygen system (10) automatically stops.
  • Precision pressure regulators (13) positioned on the flow line (16) were preferred as membrane/diaphragm in the present embodiment.
  • the precision pressure regulator (13) which has membrane structure, has a flexible structure and allows the direct transmission of the oxygen gas from the case where the pressure is fixed. If the pressure is too high, the flexible structure of the membrane is enlarged and the discharge channel on it is opened to discharge the excess oxygen gas.
  • Precision pressure regulators (13) may also be preferred as mechanical or electronic embodiments to perform the required air evacuation function.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

The invention is a compact portable oxygen system (10) for producing high pressure medical oxygen from ambient air, wherein; it comprises, a low-pressure air source (11) for producing air with low-pressure by taking in the ambient air, an oxygen generator (12) that separates nitrogen gas from the low pressure air coming from low-pressure air source (11) and provides pure oxygen, a compressor (14) that boosts the low pressure oxygen coming from the oxygen generator (12) to the required pressure, an output control valve (18) for controlling the outlet of the produced oxygen from the system, and a flow line (16) that allows the air produced in the low pressure air source (11) to be transmitted to the oxygen generator (12), the oxygen obtained from the oxygen generator (12) to the compressor (14) and the oxygen conditioned in the compressor (14) to be finally discharged out.

Description

COMPACT PORTABLE OXYGEN SYSTEM
Technical Field
In general, the invention relates to systems used in oxygen production.
The invention relates in particular to a compact portable oxygen system which produces high pressure medical oxygen from ambient air, having a mobile and a compact design with automatic and/or manual control, without needing air tanks and oxygen tanks, independent of copper piping systems and/or copper piping systems.
Prior Art
At present, there are systems that produce medical oxygen gas at high pressure from ambient air. These systems comprising compressor, dryer, air tank, oxygen generator and oxygen tank. In these systems, the air absorbed from the environment by the compressor is produced with 8 bar pressure. The humidity and oil in the pressurized air obtained by the compressor are separated by the dryer in the system. The dry air obtained at 8 bar pressure is sent to the air tank. Dry air is sent from the air tank to the oxygen generator. The oxygen generator separates the oxygen gas in the air from the nitrogen gas. As a result of this separation, oxygen gas is obtained at 5 bar pressure. The oxygen gas obtained at the pressure of 5 bar is sent to the oxygen backup tank. The oxygen obtained is then sent to the hospital piping systems via copper pipes. In applications in patients, it is used in operating rooms, in intensive care and patient rooms at 4 bar pressure.
Increasing the pressure of the air absorbed by the compressor to 8 bars causes the system to consume more electricity. In addition, compressors require 3-phase electrical sources to boost the ambient air pressure. On the other hand, 79.1 % of the air obtained in 8 bars consists of nitrogen gas that we want to separate from oxygen. Since the nitrogen gas that is decomposed does not used for anything from there, it is discharged from the exhaust at the end of the process. In other words, electricity is also consumed to raise the nitrogen gas, which is not used by 80% of the time, to 8 bars. The air obtained by the compressor is sent to the air tank serving as an expansion vessel. Even for an only one expansion vessel, the volume, the area it occupies and the weight of the system is increasing. Due to the weight and volume of the tanks, the transportation becomes also difficult.
An example of an oxygen production machine can be given with the US patent document numbered as US2017087326 and entitled as "Oxygen Concentrator Systems And Methods". The invention relates to a method and system of compression for supplying an oxygen enriched gas to a user of an oxygen concentrator wherein the oxygen concentrator comprises of at least two containers, a gas separation adsorbent placed in at least two containers, where the gas separation container is decomposed at least some nitrogen from the air in the tank to produce oxygen-enriched gas, and at least one compressor connected to at least one canister. However, in that application, there is no mention of a compact portable oxygen system which produces high pressure medical oxygen from ambient air in a mobile, having a compact design with automatic and/or manual control, without needing air tanks and oxygen tanks, independent of copper piping systems and/or copper piping systems, and also there are disadvantages that are encountered in the above-mentioned technique.
As a result; the need for a compact portable oxygen system and the inadequacy of existing solutions necessitated an improvement in the technical field.
The Purpose of Invention
The present invention relates to a compact portable oxygen system that meets the above- mentioned requirements, eliminates all disadvantages and brings some additional advantages.
The fundamental purpose of the compact portable oxygen system, which is the subject of the invention, is to create a compact mobilized system to provide lightness and ease of transportation. Ambient air is absorbed and sent to the oxygen generator between the range of 0-1 bars. If the air production capacity of the low pressure air production source running in the range of 0 to 1 bar is as much as the amount of air consumption of the oxygen production generator, there is no need to use an air backup tank in the system. The air we get at low pressure is sent directly to the oxygen generator. Pure medical oxygen is obtained by separating nitrogen gas from air at low pressure. Low pressure medical oxygen is obtained at an average value of 0,5 bar. The oxygen obtained is compressed by the compressor to increase the pressure to 4 bars. With the valves and vanes used in the system, it is ensured that the system has fixed 4 bar oxygen. In this way, when the oxygen outlet at the system output is closed or opened, constant pressure oxygen is provided. In this way, no oxygen backup tank is needed. Since there is no need for an air backup tank and/or an oxygen backup tank, the system is designed to be lightweight and small. The system is provided to be compact and portable.
Another purpose of the invention is to save energy. The system operates at low pressure between 0-1 bar. Since no high pressures are needed, the compressor works less to produce the necessary oxygen. In addition, the nitrogen gas that is separated in the system should not be increased to high pressures, unnecessary energy is not consumed. By using less energy, medical oxygen can be obtained at a pressure of 4 bar. Due to the automatic and/or manual flow switch, the system is stopped by avoiding unnecessary operation and it only works when necessary. The flow switch supports energy saving.
The present invention is a compact portable oxygen system for producing high pressure medical oxygen from ambient air to achieve all the advantages mentioned above and which will be understood from the following detailed description, wherein; compact portable oxygen system comprises,
• a low-pressure air source for producing air with low-pressure by taking in the ambient air,
• oxygen generator that separates nitrogen gas from the low pressure air coming from low-pressure air source and provides pure oxygen,
• a compressor that boosts the low pressure oxygen coming from the oxygen generator to the required pressure,
• an output control valve for controlling the outlet of the produced oxygen from the system,
• a flow line that allows the air produced in the low pressure air source to be transmitted to the oxygen generator, the oxygen obtained from the oxygen generator to the compressor and the oxygen conditioned in the compressor to be finally discharged out.
The structural and characteristic features and all advantages of the invention outlined in the drawings below and in the detailed description made by referring these figures will be understood clearly, therefore the evaluation should be made by taking these figures and detailed explanation into consideration. Brief Description of the Figures
Figure - 1 : A schematic view of a compact portable oxygen system of the invention.
Reference Numbers
10 Compact portable oxygen system
1 1 Low pressure air source
12 Oxygen generator
13 Precision pressure regulator
14 Compressor
15 Check valve
16 Flow line
17 Switch
18 Output control valve
Detailed Description of the Invention
In this detailed description, preferred structures of the compact portable oxygen system
(10) are explained only for a better understanding of the subject matter and without any restrictive effect.
The invention is a compact portable oxygen system (10) for producing high pressure medical oxygen from ambient air, wherein; it comprises,
• a low-pressure air source (1 1 ) for producing air with low-pressure by taking in the ambient air,
• an oxygen generator (12) that separates nitrogen gas from the low pressure air coming from low-pressure air source (1 1 ) and provides pure oxygen,
• a compressor (14) that boosts the low pressure oxygen coming from the oxygen generator (12) to the required pressure,
• an output control valve (18) for controlling the outlet of the produced oxygen from the system,
• a flow line (16) that allows the air produced in the low pressure air source (1 1 ) to be transmitted to the oxygen generator (12), the oxygen obtained from the oxygen generator (12) to the compressor (14) and the oxygen conditioned in the compressor (14) to be finally discharged out. Figure 1 shows a schematic view of a compact portable oxygen system (10) of the invention. In the compact portable oxygen system (10), using low pressure air source (1 1 ) which operates at low pressure between 0 and 1 bar, low pressure air is produced and low electricity consumption is provided. Ambient air is absorbed by the low pressure air source (1 1 ) and sent to the oxygen generator (12). The amount of air production of the low pressure air source (1 1 ) is equal to the amount of air consumed by the oxygen generator (12). Thus, there is no need to use (10) air backup tanks in the compact portable oxygen system. Since the air backup tank is not needed, in addition to saving space for the system, it is also beneficial in terms of weight. With the dehumidification systems connected to the front and/or rear sides of the low pressure air source (1 1 ), the produced air is dehumidified. The air we get at low pressure is sent directly to the oxygen generator (12). At low pressure, medical pure oxygen is obtained by separating nitrogen gas from air. Low pressure medical oxygen, obtained at an average pressure of 0.5 bar, is sent to the compressor (14) to increase its pressure to 4 bars. In the compressor (14), the pressure of medical oxygen is increased to 4 bars. Thus, the pressure value of the oxygen at low pressure is increased by means of the compressor (14) connected to the oxygen generator (12), that is, conditioned.
Choosing the same oxygen gas production flow of the oxygen production generator (12) with compressor (14) flow enables the system to operate more efficiently. In the case where the production capacity of the oxygen generator (12) exceeds the capacity of the compressor (14) and/or when the compressor (14) is stopped while the oxygen generator (12) is operating, in order to make the oxygen generator (12) continue to operate smoothly, to prevent reducing or stopping the quality of the pure oxygen produced, at least one adjustable precision pressure regulator (13) is located between the oxygen generator (12) and the compressor (14). Precision pressure regulator (13) is set to the maximum operating output pressure of the oxygen generator (12). Normally, when the oxygen generator (12) works above the maximum working pressure, it automatically stops to prevent damage. This issue leads to the degradation of purity in oxygen production and to the unwanted interruptions in the process of oxygen production. In order to prevent low oxygen purity and prevent interruption in the process, the precision pressure regulator (13) releases excess oxygen, which causes high pressure on the line, into the environment when the oxygen generator (12) approaches towards its maximum pressure limit. In this way, it will be ensured that the oxygen generator (12) produces high purity oxygen and continues to operate in harmony with compressor (14) by keeping the pressure value in the line at the desired level. In addition, the check valve (15) is positioned at the outlet of the compressor (14) in order to prevent the pressurized oxygen in the flow line (16) from returning back to the compressor (14). Thus, a compact portable oxygen system (10) is provided with a constant 4 bar oxygen pressure.
Oxygen storage tanks are not used in the compact portable oxygen system (10) to save space and weightiness. The second precision pressure regulator (13) is located on the mobilized oxygen flow line (16) to prevent decrease in oxygen purity, to produce medical oxygen at constant 4 bar exit pressure, to prevent even stopping the production of oxygen and if the output control valve (18) positioned on the flow line (16) is closed while the compressor (14) is operating, the oxygen pressure above the 4 bar will be formed on the flow line (16) to prevent damage to the flow line (16) or the compressor (14). The pressure value of the second precision pressure regulator (13) is adjusted to the maximum operating pressure of 4 bars of the oil-free high-pressure compressor (14). In this way, when the output control valve (18) is closed or the oxygen flow stops in the flow line (16), the high pressure compressor (14) will want to increase the pressure of the oxygen above the 4 bars that will be sent to the flow line (16). On the other hand, the compressor (14) will open the second precision pressure regulator (13) which is set to the maximum working pressure, will release the oxygen concentration that will be caused by the high pressure, and thus provide a fixed 4 bars oxygen in the flow line (16). Since the oxygen pressure in the flow line (16) falls below 4 bars when the output control valve (18) of the compact mobile oxygen system (10) is re-opened, for example, when the operation is resumed, the second precision pressure regulator (13) is then closed again to fix the oxygen pressure to the 4 bars in the compact mobile oxygen system (10). In this way, when the output control valve (18) at the outlet of the compact mobile oxygen system (10) is closed and/or opened, continuous and constant pressured high purity oxygen production is provided.
With a switch(17) connected to the output of the flow line (16), the compact portable oxygen system (10) becomes to have automatic start-up and automatic stop control functions. As the output control valve (18) at the outlet of the compact portable oxygen system (10) is open and oxygen flows from the flow line (16), the dry contact of the switch (17) is in the closed position and the compact portable oxygen system (10) continues to operate. When the output control valve (18) is closed, and the flow is stopped, the switch (17) for the flow path is switched on to engage a time limit relay. If there is no oxygen flow in a given time, the time limit relay stops the compact portable oxygen system (10). In this way, the compact portable oxygen system (10) does not work in vain. In addition, the check valve (15) is positioned at the outlet of the compressor (14) in order to prevent the pressurized oxygen in the flow line (16) from returning back to the compressor (14) and to prevent the decrease in the pressure of oxygen in the flow line (16). In this case, in the compact portable oxygen system (10), the outlet of the flow line (16) is provided with a constant 4 bars oxygen pressure.
The automatic start-up mechanism is as follows. When the output control valve (18) which is one end of the system oxygen flow line (16) is closed and the check valve (15) which is positioned to the other end is preventing the back flow, the pressure of the oxygen gas in the flow line (16) is normally at 4 bars. However, since the switch (17) has no oxygen flow, the dry contact is in the open position and the system is at rest. When the output control valve (18) is opened, oxygen in 4 bars of pressure on the output line passes through the switch (17) and takes the dry contact end of the switch (17) to the closed position. This starts to operate the compact portable oxygen system (10). In this way, when oxygen is needed, the compact mobilized oxygen system (10) automatically generates oxygen gas or when oxygen is not needed, the compact mobilized oxygen system (10) automatically stops.
Precision pressure regulators (13) positioned on the flow line (16) were preferred as membrane/diaphragm in the present embodiment. The precision pressure regulator (13), which has membrane structure, has a flexible structure and allows the direct transmission of the oxygen gas from the case where the pressure is fixed. If the pressure is too high, the flexible structure of the membrane is enlarged and the discharge channel on it is opened to discharge the excess oxygen gas. Precision pressure regulators (13) may also be preferred as mechanical or electronic embodiments to perform the required air evacuation function.

Claims

1. The invention is a compact portable oxygen system (10) for producing high pressure medical oxygen from ambient air, wherein; it comprises,
• a low-pressure air source (1 1 ) for producing air with low-pressure by taking in the ambient air,
• an oxygen generator (12) that separates nitrogen gas from the low pressure air coming from low-pressure air source (11 ) and provides pure oxygen,
• a compressor (14) that increases the low pressure oxygen coming from the oxygen generator (12) to the required pressure,
• an output control valve (18) for controlling the outlet of the produced oxygen from the system,
• a flow line (16) that allows the air produced in the low pressure air source (1 1 ) to be transmitted to the oxygen generator (12), the oxygen obtained from the oxygen generator (12) to the compressor (14) and the oxygen conditioned in the compressor (14) to be finally discharged out.
2. A compact portable oxygen system (10) according to Claim 1 characterized in comprises a precision pressure regulator (13) positioned between the oxygen generator (12) and the compressor (14) on the flow line (16) and between the compressor (14) and the output control valve (18), allowing the oxygen to be transmitted at certain pressure.
3. A compact portable oxygen system (10) according to Claim 2, wherein said precision pressure regulators (13) are membrane/diaphragm.
4. A compact portable oxygen system (10) according to Claim 1 , characterized in comprises a check valve (15) which is positioned at the outlet of the compressor (14) in order to prevent the pressurized oxygen obtained in the compressor (14) from returning back to the compressor (14).
5. A compact portable oxygen system (10) according to Claim 1 , characterized in comprises a switch (17) connected to the output of the flow line (16) that makes the system to operate automatically.
PCT/TR2018/050667 2017-11-08 2018-11-08 Compact portable oxygen system WO2019182530A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2017/17549 2017-11-08
TR201717549 2017-11-08

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WO2019182530A3 WO2019182530A3 (en) 2019-12-05

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6551384B1 (en) * 2001-07-05 2003-04-22 Praxair Technology, Inc. Medical oxygen concentrator
JP4473580B2 (en) * 2002-01-31 2010-06-02 エアーセップ・コーポレーション Portable oxygen concentrator
US8753435B2 (en) * 2006-04-03 2014-06-17 Ric Investments, Llc Portable oxygen concentrator

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