JP2022036346A - Oxygen concentrator and oxygen concentration method - Google Patents

Abstract

To provide an oxygen concentrator and an oxygen concentration method capable of stabilizing oxygen concentration of air when inhaled by a human or an animal irrespective of a change in a ventilation amount of the human or the animal.SOLUTION: An oxygen concentrator 10 includes: a compressor 12 for supplying air in the atmosphere; oxygen concentration parts 20A and 20B for generating concentrated oxygen from the air supplied by the compressor 12; and a flow rate adjusting part 30B for purging part of the concentrated oxygen that can be supplied to a predetermined object from the oxygen concentration parts 20A and 20B to the atmosphere. By purging part of the concentrated oxygen to the atmosphere from the flow rate adjusting part 30B, oxygen concentration of the concentrated oxygen supplied to the object is reduced.SELECTED DRAWING: Figure 1

Description

The present invention relates to an oxygen concentrator and an oxygen concentrator method for adjusting the oxygen concentration of inhaled air in oxygen therapy of, for example, humans or animals such as cats and dogs.

In conventional oxygen inhalation therapy for humans, it is common to supply high-concentration oxygen with an oxygen concentration of about 90% or more, but depending on the disease or symptom, it is not high-concentration oxygen of about 90% or more, for example, 25. It is also necessary to inhale oxygen with an oxygen concentration reduced to about%.

Here, as a conventional method of lowering the oxygen concentration, for example, the oxygen concentration is lowered by reducing the flow rate of oxygen having an oxygen concentration of 100% and mixing the outside air relatively increased at the time of inhalation. The air-fuel mixture was inhaled by a person.

International release WO2016 / 098180

However, in the above method, when the supply oxygen flow rate is constant, a large amount of outside air is inhaled in a breath with a large ventilation volume, and the outside air is reduced in a breath with a low ventilation volume, and the mixing ratio of the supply oxygen flow rate and the outside air fluctuates. There was a problem that the oxygen concentration of the inhaled air was not stable.

Here, the "ventilation volume" means the volume of air when a person or an animal is breathing, and can fluctuate depending on the depth of breathing or the like.

On the other hand, "vital capacity" is the volume of air when a person or animal inhales the air most deeply and exhales it (also called forced respiration). For this reason, "ventilation volume" and "vital capacity" are essentially different concepts.

"Ventilation volume" can always fluctuate depending on the mood, psychological state, mental state, physical condition, etc. of the same person, whereas "vital capacity" is almost uniform for each individual. It is decided, and if it is the same person, it is basically constant.

Therefore, in view of the above problems, the present invention is an oxygen concentrator and an oxygen concentrator method capable of stabilizing the oxygen concentration of the inhaled air when inhaled by a person or an animal regardless of the fluctuation of the ventilation volume of the person or the animal. The purpose is to provide.

The invention according to claim 1 is a compressor that supplies air in the atmosphere, an oxygen concentrator that generates concentrated oxygen from the air supplied by the compressor, and the concentrated oxygen that can be supplied to a predetermined object from the oxygen concentrator. An oxygen concentrator having a flow rate adjusting unit for purging a part of the concentrated oxygen into the atmosphere, and being supplied to the target by purging a part of the concentrated oxygen from the flow rate adjusting unit into the atmosphere. It is characterized in that the oxygen concentration of the concentrated oxygen is lowered.

The invention of claim 2 is a compressor that supplies air in the atmosphere, an oxygen concentrator that generates concentrated oxygen from the air supplied by the compressor, and the concentrated oxygen that can be supplied to a predetermined object from the oxygen concentrator. An oxygen concentrator having a flow rate adjusting unit for purging a part of the oxygen into the atmosphere, regardless of the magnitude of the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit. As the flow rate of the concentrated oxygen supplied to the subject increases, the oxygen concentration of the concentrated oxygen supplied to the target decreases.

The invention of claim 3 is a compressor that supplies air in the atmosphere, an oxygen concentrator that generates concentrated oxygen from the air supplied by the compressor, and the concentrated oxygen that can be supplied to a predetermined object from the oxygen concentrator. An oxygen concentrator having a flow rate adjusting unit for purging a part of the oxygen into the atmosphere, and the target is increased by increasing the flow rate of the concentrated oxygen purged from the flow rate adjusting unit into the atmosphere. It is characterized in that the oxygen concentration of the concentrated oxygen supplied to the target decreases regardless of the magnitude of the flow rate of the concentrated oxygen supplied.

The invention of claim 4 is a concentrated oxygen generation step of generating concentrated oxygen from the air supplied by a compressor in an oxygen concentrator, and adjusting the flow rate of a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target. A purging step of purging into the atmosphere by the unit and a control step of adjusting the flow rate of the concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit and controlling the oxygen concentration of the concentrated oxygen supplied to the target. In the control step, the oxygen concentration of the concentrated oxygen supplied to the target is reduced by purging a part of the concentrated oxygen into the atmosphere from the flow rate adjusting unit. It is a feature.

The invention of claim 5 is a concentrated oxygen generation step of generating concentrated oxygen from the air supplied by the compressor in the oxygen concentrator, and adjusting the flow rate of a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target. A purging step of purging into the atmosphere by the unit and a control step of adjusting the flow rate of the concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit and controlling the oxygen concentration of the concentrated oxygen supplied to the target. In the control step, the flow rate of the concentrated oxygen supplied to the target increases regardless of the magnitude of the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit. As a result, the oxygen concentration of the concentrated oxygen supplied to the target is reduced.

The invention of claim 6 is a concentrated oxygen generation step of generating concentrated oxygen from the air supplied by the compressor in the oxygen concentrator, and adjusting the flow rate of a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target. A purging step of purging into the atmosphere by the unit and a control step of adjusting the flow rate of the concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit and controlling the oxygen concentration of the concentrated oxygen supplied to the target. It is an oxygen concentrator method to have, and in the control step, the flow rate of the concentrated oxygen supplied to the target is increased by increasing the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit. Regardless, it is characterized in that the oxygen concentration of the concentrated oxygen supplied to the subject decreases.

According to the present invention, it is possible to stabilize the oxygen concentration of air when inhaled by humans or animals without being affected by fluctuations in the ventilation volume of humans or animals.

It is a block diagram of the oxygen concentrator of this invention. It is a graph which shows the relationship between an oxygen flow rate and an oxygen concentration. It is a figure which showed the experimental result of the oxygen concentration method of this invention.

The oxygen concentrator and the oxygen concentrator method according to the embodiment of the present invention will be described.

The oxygen concentrator and the oxygen concentrator method of the present invention are devices or methods for supplying concentrated oxygen to a predetermined object. The "object" assumed by the present invention means, for example, a human or an animal, but in the following embodiments, a patient will be described as an object.

As shown in FIG. 1, the oxygen concentrator 10 mainly includes a compressor 12, a heat exchanger 14, a fan 16, an air control unit 18, a pair of oxygen concentrators 20A and 20B, and a concentrated oxygen tank 22. It has a pressure adjusting unit 24, a plurality of flow meters 26A and 26B, and a plurality of flow rate adjusting units 30A and 30B.

The compressor 12 is a supply source for supplying air in the atmosphere to the downstream side.

The heat exchanger 14 is for lowering the temperature of the compressed air compressed by the compressor 12 and becoming hot. By driving the fan 16, an air-cooled heat dissipation effect can be obtained.

For the air control unit 18, for example, a two-way valve manifold is adopted. The two-way valve manifold is combined with four two-way valves, two valves operating in each cycle to feed air and expel nitrogen. The operation of the two-way valve manifold repeats the first cycle and the second cycle in a predetermined time or a predetermined pressure cycle. The operating cycle depends on the power frequency and flow rate.

The pair of oxygen concentrators 20A and 20B have, for example, a housing and zeolite housed inside the housing. This is also called a molecular sieve and has the ability to separate molecules depending on the size of the molecule. Zeolites adsorb nitrogen and allow oxygen to pass through. The reason for this is that the size of nitrogen molecules is relatively large and is captured by the pores of zeolite, whereas the size of oxygen molecules is relatively small and is not captured by the pores of zeolite. As a result, when compressed air passes through the zeolite, oxygen and nitrogen in the air are separated, nitrogen is adsorbed by the zeolite, and concentrated oxygen is generated.

The generated concentrated oxygen is stored in the concentrated oxygen tank 22, controlled to a predetermined value by the pressure adjusting unit 24, and then branched at the outlet of the flow rate adjusting unit 30A.

That is, two routes, a first flow path 36 and a second flow path 38, are provided on the outlet side of the flow rate adjusting unit 30A. A supply device 28 is connected to the first flow path 36, and the second flow path 38 is open to the atmosphere via the flow rate adjusting unit 30B.

The supply device 28 is, for example, a device used for supplying concentrated oxygen to an object such as a human or an animal, and for example, an anesthesia machine, a nasal cannula, a mask, a cage for accommodating an animal, or the like, depending on the application. It can be selected as appropriate.

The supply device 28 is not limited to an anesthesia machine, a nasal cannula, a mask, and a cage, but includes all devices and other means necessary for supplying concentrated oxygen to a human or an animal.

Here, the relationship between the oxygen concentration and the flow rate will be considered.

As shown in FIG. 2, when an oxygen concentrator is used in which the flow rate when supplying concentrated oxygen is, for example, 2 L / min and the oxygen concentration is about 90%, the flow rate of concentrated oxygen can be adjusted to 30 L / min. The oxygen concentration of concentrated oxygen drops to about 25%. Therefore, the relationship between the flow rate of concentrated oxygen and the oxygen concentration is inversely proportional. Therefore, when supplying high-concentration oxygen to the patient, the concentrated oxygen is supplied to the supply device 28 at the smallest possible flow rate. When supplying low-concentration oxygen to the patient, concentrated oxygen is supplied to the supply device 28 at a flow rate as large as possible. In this way, it is necessary to change the flow rate of concentrated oxygen according to the magnitude of the oxygen concentration of the concentrated oxygen to be targeted.

The supply device 28 has a flow meter 26A and a flow rate adjusting unit 27A. The flow rate adjusting unit 27A adjusts the flow rate of the concentrated oxygen supplied to the supply device 28.

The flow rate adjusting unit 30B of the second flow path 38 has a flow meter 26B.

The flow rate adjusting units 30A and 30B adjust the flow rate of the gas flowing through the flow path.

In particular, the following three methods are proposed as the oxygen concentration method of the present embodiment.

(First oxygen concentration method)
The first oxygen concentrator method is a concentrated oxygen generation step of generating concentrated oxygen from the air supplied by the compressor 12 by the oxygen concentrators 20A and 20B, and a concentrated oxygen concentrator that can be supplied to a predetermined target from the oxygen concentrators 20A and 20B. A purging step of purging a part into the atmosphere by the flow rate adjusting unit 30B and a control step of adjusting the flow rate of concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit 30B and controlling the oxygen concentration of the concentrated oxygen supplied to the target. In the control step, a part of the concentrated oxygen is purged into the atmosphere from the flow rate adjusting unit 30B to reduce the oxygen concentration of the concentrated oxygen supplied to the target. Is.

(Second oxygen concentration method)
The second oxygen concentrator method includes a concentrated oxygen generation step of generating concentrated oxygen from the air supplied by the compressor 12 by the oxygen concentrators 20A and 20B, and a concentrated oxygen concentrator that can be supplied to a predetermined target from the oxygen concentrators 20A and 20B. A purging step of purging a part into the atmosphere by the flow rate adjusting unit 30B and a control step of adjusting the flow rate of concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit 30B and controlling the oxygen concentration of the concentrated oxygen supplied to the target. In the control step, the flow rate of the concentrated oxygen supplied to the target increases regardless of the magnitude of the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit 30B. This is an oxygen concentrating method characterized by a decrease in the oxygen concentration of the concentrated oxygen supplied to the subject.

(Third oxygen concentration method)
The third oxygen concentrator method includes a concentrated oxygen generation step of generating concentrated oxygen from the air supplied by the compressor 12 by the oxygen concentrators 20A and 20B, and a concentrated oxygen concentrator that can be supplied to a predetermined target from the oxygen concentrators 20A and 20B. A purging step of purging a part into the atmosphere by the flow rate adjusting unit 30B and a control step of adjusting the flow rate of concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit 30B and controlling the oxygen concentration of the concentrated oxygen supplied to the target. In the control step, the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit 30B increases, so that the flow rate of the concentrated oxygen supplied to the target is increased. Instead, it is an oxygen concentrating method characterized in that the oxygen concentration of the concentrated oxygen supplied to the target is lowered.

Next, the operation of the oxygen concentrator and the oxygen concentrator method according to the present embodiment will be described.

As shown in FIG. 1, concentrated oxygen is stored in the concentrated oxygen tank 22. A part of the concentrated oxygen of the concentrated oxygen tank 22 is supplied to the first flow path 36, and the rest of the concentrated oxygen is supplied to the second flow path 38.

The concentrated oxygen supplied to the first flow path 36 is supplied to the patient via the supply device 28 while the flow rate is appropriately adjusted by the flow rate adjusting unit 27A.

The concentrated oxygen supplied to the second flow path 38 is purged into the atmosphere while the flow rate is appropriately adjusted by the flow rate adjusting unit 30B. In this way, some of the concentrated oxygen is released into the atmosphere.

Here, as a characteristic of the oxygen concentrator 10, the relationship between the flow rate and the concentration of the concentrated oxygen is shown in FIG. It is shown that the oxygen concentration of the concentrated oxygen decreases as the flow rate of the concentrated oxygen increases.

In conventional oxygen inhalation therapy for humans, it is necessary to adjust the oxygen concentration of oxygen supplied to a person due to a disease or symptom to a medium concentration range of, for example, about 25%, instead of a high concentration of about 90% or more. At this time, as a method of lowering the oxygen concentration, for example, the flow rate of concentrated oxygen is reduced and the mixture is mixed with a predetermined volume of outside air so that a person inhales the air-fuel mixture having the reduced oxygen concentration.

However, in the above method, since the ventilation volume of a person is constantly changing, there is a problem that the oxygen concentration of the air when inhaled by a person is not stable.

The principle (mechanism) in which this problem occurs will be described using a concrete example.

Taking the case of oxygen inhalation of a patient as an example, the ventilation volume of the patient fluctuates depending on the depth of breathing and the like. For example, it is assumed that the ventilation volume of one breath is 700 ml when the breathing of a patient is shallow due to some mental or physical influence, and the ventilation volume of one breath is deep when the breathing is deepened by sighing or the like. It is assumed to be 1200 ml.

(Ventilation volume during shallow breathing 700 ml)
Under the above assumption, for example, when 2 L / min (2000 ml) of pure oxygen (oxygen concentration: about 100%) is supplied to the patient from an oxygen tank, when the patient breathes 10 times per minute, one ventilation is performed. The amount of pure oxygen in the amount is 2000 (ml) ÷ 10 (times) = 200 (ml). In the case of shallow breathing, it is assumed that the ventilation volume of one breath is 700 ml, whereas only 200 ml of pure oxygen can be supplied. The shortage of 500 ml will simultaneously inhale the outside air through the patient's nose and mouth. In this case, since the outside air inhaled through the nose or mouth has an oxygen concentration of about 21%, 500 ml contains about 100 ml (500 (ml) × 21 (%)) of pure oxygen. Will be ingested by the patient. The total amount of pure oxygen (200 ml) taken from the oxygen cylinder and the pure oxygen (100 ml) taken from the outside air is 300 ml. At this time, the patient ingests a total of 300 ml of pure oxygen. Since the pure oxygen amount is 300 ml with respect to the above assumed ventilation volume of 700 ml, the oxygen concentration in this case is about 43%.

(Ventilation volume during deep breathing 1200 ml)
Under the same conditions, in the case of deep breathing, the ventilation volume of one breath is assumed to be 1200 ml, whereas pure oxygen can be supplied only 200 ml. The shortage of 1000 ml will simultaneously inhale the outside air through the patient's nose and mouth. In this case, since the outside air inhaled through the nose or mouth has an oxygen concentration of about 21%, 1000 ml contains about 200 ml (1000 (ml) × 21 (%)) of pure oxygen. Will be ingested by the patient. The total amount of pure oxygen taken from the oxygen cylinder (200 ml) and the pure oxygen taken from the outside air (200 ml) is 400 ml. At this time, the patient ingests a total of 400 ml of pure oxygen. Since the pure oxygen amount is 400 ml with respect to the above assumed ventilation volume of 1200 ml, the oxygen concentration in this case is about 33%.

As described above, the oxygen concentration of the air when inhaled by the patient changes depending on the ventilation volume of the patient. In conventional medical practice, in order to respond to this, the oxygen partial pressure of the patient's arterial blood is continuously measured, it is judged whether or not the oxygen intake is appropriate, and the patient is treated based on the measurement result of the oxygen partial pressure. The treatment was performed while adjusting the flow rate of oxygen supply.

On the other hand, according to the present embodiment, the oxygen concentration of the inhaled air inhaled by the patient can be stably maintained regardless of the ventilation volume of the patient. It is possible to eliminate the above-mentioned complexity and contribute to improving the efficiency and accuracy of medical practice.

That is, according to the present embodiment, a part of the concentrated oxygen supplied from the concentrated oxygen tank 22 is intentionally purged (released) into the atmosphere through the second flow path 38 and not through the supply device 28. This makes it possible to simultaneously reduce the flow rate and oxygen concentration of concentrated oxygen supplied to the patient through the first flow path 36 and through the supply device 28.

As a result, regardless of the ventilation volume of the patient, a constant concentration of oxygen can be supplied to the patient, and the treatment efficiency and the therapeutic effect can be significantly improved. As described above, the oxygen concentrator and the oxygen concentrator method of the present invention bring about a great change or innovation in oxygen therapy.

Further, as a method of stably supplying the oxygen concentration of the inhaled air regardless of the fluctuation of the ventilation volume, there is a method of quantitatively mixing compressed air and nitrogen gas, but these devices are also unnecessary.

Reference numeral 32 is an orifice, and reference numeral 34 is a PE valve.

Next, an experimental example of the oxygen concentration method of the present embodiment will be described.

How the oxygen concentration of the concentrated oxygen provided to the supply device 28 changes according to the change in the flow rate of the concentrated oxygen purged (released) into the atmosphere by adjusting the flow rate adjusting unit 30B shown in FIG. An experiment was conducted to confirm.

In that experiment, as shown in FIG. 3, the flow rate of concentrated oxygen supplied to the supply device 28 was changed between 2 L / min and 5 L / min. Further, the flow rates of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere were changed to 6 L / min, 12 L / min, 23 L / min, and 30 L / min.

As shown in FIG. 3, the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere is 6 L / min, and the flow rate of concentrated oxygen supplied to the supply device 28 is 2 L / min. In this case, the oxygen concentration of the concentrated oxygen was 60%, and in the case of 5 L / min, the oxygen concentration of the concentrated oxygen was 43%.

The oxygen concentration of concentrated oxygen when the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere is 12 L / min and the flow rate of concentrated oxygen supplied to the supply device 28 is 2 L / min. Was 40%, and when 5 L / min, the oxygen concentration of the concentrated oxygen was 35%.

The oxygen concentration of concentrated oxygen is 23 L / min when the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere is 23 L / min, and when the flow rate of concentrated oxygen supplied to the supply device 28 is 2 L / min. Was 30%, and when 5 L / min, the oxygen concentration of the concentrated oxygen was 29%.

The oxygen concentration of concentrated oxygen is 30 L / min when the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere is 30 L / min, and when the flow rate of concentrated oxygen supplied to the supply device 28 is 2 L / min. Was 25%, and when 5 L / min, the oxygen concentration of the concentrated oxygen was 23%.

From the above results, the relationship between the flow rate of concentrated air supplied to the supply device 28 and the oxygen concentration is supplied regardless of the value of the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere. It was found that when the flow rate of the concentrated air supplied to the appliance 28 increased (2 L / min → 5 L / min), the oxygen concentration of the concentrated oxygen decreased. This proved that if the flow rate of the concentrated air supplied to the supply device 28 increases, the oxygen concentration of the concentrated oxygen decreases.

It was also proved that if the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere increases, the oxygen concentration of the concentrated oxygen supplied to the supply device 28 decreases. It was also found that the value of the flow rate of the concentrated air supplied to the supply device 28 had the same tendency at 2 L / min and 5 L / min.

However, if the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere increases, the difference in oxygen concentration of the concentrated air supplied to the supply device 28 will increase the concentration supplied to the supply device 28. It was proved that the air flow rate became smaller in the large and small booths (values of 2 L / min and 5 L / min). That is, if the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere increases, the oxygen concentration of the concentrated oxygen supplied to the supply device 28 becomes the oxygen concentration of the concentrated oxygen supplied to the supply device 28. It was found that regardless of the magnitude of the flow rate, it tends to converge so as to decrease to a constant value.

As described above, it has been found that purging (releasing) concentrated oxygen from the second flow path 38 into the atmosphere greatly contributes to a decrease in the oxygen concentration of the concentrated oxygen supplied to the supply device 28.

Further, regardless of the magnitude of the flow rate of the concentrated oxygen purged (released) from the second flow path 38 into the atmosphere, the concentrated oxygen supplied to the supply device 28 is supplied by increasing the flow rate of the concentrated oxygen. It was found that the oxygen concentration of the concentrated oxygen was reduced.

Further, if the flow rate of concentrated oxygen purged (released) from the second flow path 38 into the atmosphere increases, it is supplied to the supply device 28 regardless of the magnitude of the flow rate of the concentrated oxygen supplied to the supply device 28. It was found that the oxygen concentration of the concentrated oxygen decreased so as to converge to a constant value.

10 Oxygen concentrator 12 Compressor 14 Heat exchanger 16 Fan 18 Air control unit 20A Oxygen concentrator 20B Oxygen concentrator 22 Concentrating oxygen tank 24 Pressure adjustment unit 26A Flow meter 26B Flow meter 27A Flow adjustment unit 28 Supply device 30A Flow adjustment unit 30B Flow rate adjustment unit 32 Orifice 34 PE valve 36 1st flow path 38 2nd flow path

Claims (6)

With a compressor that supplies air in the atmosphere,
An oxygen concentrator that generates concentrated oxygen from the air supplied by the compressor,
A flow rate adjusting unit for purging a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target into the atmosphere, and a flow rate adjusting unit.
It is an oxygen concentrator with
An oxygen concentrator characterized in that the oxygen concentration of the concentrated oxygen supplied to the target is lowered by purging a part of the concentrated oxygen into the atmosphere from the flow rate adjusting unit. With a compressor that supplies air in the atmosphere,
An oxygen concentrator that generates concentrated oxygen from the air supplied by the compressor,
A flow rate adjusting unit for purging a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target into the atmosphere, and a flow rate adjusting unit.
It is an oxygen concentrator with
Regardless of the magnitude of the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit, the flow rate of the concentrated oxygen supplied to the target is increased, so that the concentrated oxygen supplied to the target is of the concentrated oxygen. An oxygen concentrator characterized by a decrease in oxygen concentration. With a compressor that supplies air in the atmosphere,
An oxygen concentrator that generates concentrated oxygen from the air supplied by the compressor,
A flow rate adjusting unit for purging a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target into the atmosphere, and a flow rate adjusting unit.
It is an oxygen concentrator with
By increasing the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit, the concentrated oxygen supplied to the target is irrespective of the magnitude of the flow rate of the concentrated oxygen supplied to the target. An oxygen concentrator characterized by a decrease in oxygen concentration. Concentrated oxygen generation process that generates concentrated oxygen in the oxygen concentrator from the air supplied by the compressor,
A purging step of purging a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target into the atmosphere by the flow rate adjusting unit.
A control step of adjusting the flow rate of the concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit and controlling the oxygen concentration of the concentrated oxygen supplied to the target.
It is an oxygen concentration method having
In the control step, the oxygen concentration method is characterized in that the oxygen concentration of the concentrated oxygen supplied to the target is lowered by purging a part of the concentrated oxygen into the atmosphere from the flow rate adjusting unit. Concentrated oxygen generation process that generates concentrated oxygen in the oxygen concentrator from the air supplied by the compressor,
A purging step of purging a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target into the atmosphere by the flow rate adjusting unit.
A control step of adjusting the flow rate of the concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit and controlling the oxygen concentration of the concentrated oxygen supplied to the target.
It is an oxygen concentration method having
In the control step, regardless of the magnitude of the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit, the flow rate of the concentrated oxygen supplied to the target is increased, so that the concentrated oxygen is supplied to the target. A method for concentrating oxygen, which comprises reducing the oxygen concentration of the concentrated oxygen. Concentrated oxygen generation process that generates concentrated oxygen in the oxygen concentrator from the air supplied by the compressor,
A purging step of purging a part of the concentrated oxygen that can be supplied from the oxygen concentrator to a predetermined target into the atmosphere by the flow rate adjusting unit.
A control step of adjusting the flow rate of the concentrated oxygen to be purged into the atmosphere by the flow rate adjusting unit and controlling the oxygen concentration of the concentrated oxygen supplied to the target.
It is an oxygen concentration method having
In the control step, the flow rate of the concentrated oxygen purged into the atmosphere from the flow rate adjusting unit is increased, so that the concentrated oxygen is supplied to the target regardless of the magnitude of the flow rate of the concentrated oxygen supplied to the target. A method for concentrating oxygen, which comprises reducing the oxygen concentration of the concentrated oxygen.

Images