JP2023170937A - Oxygen concentration device, oxygen concentration system, control method of oxygen concentration device, and control program of oxygen concentration device - Google Patents

Abstract

To provide an oxygen concentration device and the like which can automatically adjust the oxygen concentration according to the change in the oxygen flow rate in the oxygen concentration device.SOLUTION: An oxygen concentration device 1 comprises: a plurality of adsorption parts 21, 22 which introduce the compressed air to generate oxygen; a tank part 45 which stores the oxygen; and a uniform pressure valve part 23 which makes the oxygen pressure in the plurality of adsorption parts arranged on the outlet part side of the plurality of adsorption parts the uniform pressure. The oxygen generated in advance so as to be the specific concentration at the specific flow rate is stored in the tank part, and a pressure measurement part 51 which measures the pressure in the tank part is connected to the tank part. The oxygen concentration device also comprises: an oxygen flow rate information determination part 121 which determines oxygen flow rate change information of the oxygen flow rate on the basis of the fluctuation in the pressure of the pressure measurement part; and a uniform pressure valve adjustment part 118 which adjusts the oxygen concentration by changing the opening time of the uniform pressure valve part on the basis of the oxygen flow rate change information.SELECTED DRAWING: Figure 1

Description

The present invention relates to an oxygen concentrator for providing oxygen, an oxygen concentrator system, an oxygen concentrator control method, and an oxygen concentrator control program.

Conventionally, oxygen concentrators have been able to arbitrarily adjust the concentration of oxygen gas supplied to an anesthesia machine or the like within a range of about 25% to 90% (for example, Patent Document 1).
In addition, with anesthesia machines, oxygen is generally obtained from an "oxygen cylinder (oxygen concentration is about 100%)" rather than an oxygen concentrator, and this is mixed with laughing gas etc. to create an anesthetic (gas). is often supplied.
In this case, it is said that the desired oxygen concentration is preferably 22% to 100%, but when the animal to which the anesthetic is administered is awake, the risk of atelectasis due to high concentration oxygen supply should be avoided. Therefore, it is desired to continuously increase the atmospheric oxygen concentration to 21%.
On the other hand, some anesthesia machines mix oxygen with artificial air or nitrogen gas when used in surgery, and the oxygen concentration cannot be adjusted arbitrarily, so there is a need for an oxygen concentrator that can adjust the oxygen concentration arbitrarily. It is being

International publication WO2019/008949

However, as the operator adjusts the flow rate of anesthetic or oxygen in the anesthesia machine or other object, the flow rate of oxygen supplied from the oxygen concentrator to the anesthesia machine or other object will also be adjusted accordingly. It's going to change.
When the flow rate of oxygen changes, the concentration of oxygen supplied from the oxygen concentrator also changes, and there is a problem in that it is difficult to obtain a desired oxygen concentration by operating the anesthesia machine.

Therefore, the present invention provides an oxygen concentrator, an oxygen concentrator system, a method for controlling an oxygen concentrator, and a control program for an oxygen concentrator, which can automatically adjust the oxygen concentration according to changes in the oxygen flow rate in the oxygen concentrator. The purpose is to provide.

The above object is to provide a plurality of adsorption parts that generate oxygen by introducing compressed air and adsorbing nitrogen with an adsorbent, and a tank part that accommodates the oxygen discharged from the adsorption parts. It has an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing the oxygen pressure in the plurality of adsorption sections, and an oxygen concentration setting means for arbitrarily setting the concentration of the oxygen. The oxygen concentrator is an oxygen concentrator, in which the tank section stores oxygen that has been generated in advance to a specific concentration at a specific flow rate, and the tank section measures the pressure inside the tank section. an oxygen flow rate information determining unit to which a pressure measuring unit is connected and determining oxygen flow rate change information, which is change information of the oxygen flow rate, based on the pressure fluctuation of the pressure measuring unit; This is achieved by an oxygen concentrator characterized in that it includes an equal pressure valve adjustment section that adjusts the oxygen concentration to the above-mentioned oxygen concentration by changing the opening time of the pressure valve section.

According to the above configuration, oxygen of a specific concentration at a specific flow rate is stored in the tank section in advance, and this stored oxygen is supplied to another object, such as an anesthesia machine, at a specific flow rate. .
On the other hand, if a flow rate adjustment unit is installed in an anesthesia machine, etc. that receives a specific flow rate of oxygen, the operator of the anesthesia machine, etc. may operate the flow rate adjustment unit of the anesthesia machine, etc. to change the flow rate. can.
For example, an anesthesia machine generates anesthetic gas (medicine) by mixing oxygen and laughing gas, etc., but when the operator of the anesthesia machine adjusts the flow rate of the anesthetic gas, the flow rate adjustment part etc. You will need to operate it to adjust the flow rate of anesthetic gas.
When the operator of the anesthesia machine or the like adjusts the flow rate, the flow rate of oxygen supplied from the oxygen concentrator to the anesthesia machine or the like is also changed.

Therefore, in order to obtain this oxygen flow rate change information, the above configuration includes an oxygen flow rate information determination unit that determines oxygen flow rate change information, which is oxygen flow rate change information, based on the pressure change of the pressure sensor. There is.
Furthermore, it has an equal pressure valve adjustment section that adjusts the oxygen concentration by changing the opening time of the equal pressure valve section based on the oxygen flow rate change information.
As described above, in the present invention, changes in the oxygen flow rate can be determined based on changes in the pressure inside the tank section, and the oxygen concentration can be adjusted based on this determination. Therefore, the oxygen concentration can be automatically adjusted based on the change in the oxygen flow rate. It becomes possible to make adjustments.

Preferably, the oxygen concentrator includes a correspondence information storage section that stores correspondence information between pressure change information in the tank section and the oxygen flow rate, and the oxygen flow rate information judgment section determines the correspondence information based on the information in the correspondence information storage section. The oxygen flow rate change information is determined based on the oxygen flow rate change information.

According to the above configuration, since it has a correspondence information storage section that stores correspondence information between pressure change information in the tank section and oxygen flow rate, by referring to this information, oxygen flow rate change information can be quickly and accurately obtained. can be judged.

Preferably, the oxygen concentrator includes a correlation information storage unit that stores correlation information between opening time information, oxygen concentration information, and oxygen flow rate information of the equal pressure valve of the oxygen concentrator, and the equal pressure valve adjustment unit The method is characterized in that the equal pressure valve opening time is specified based on related information.

According to the above configuration, since it has a correlation information storage unit that stores correlation information among the opening time information of the equal pressure valve, oxygen concentration information, and oxygen flow rate information, by referring to this information, Moreover, the oxygen concentration can be adjusted with high precision.

Preferably, the equal pressure valve adjusting unit of the oxygen concentrator specifies a first equal pressure valve opening time that is the equal pressure valve opening time based on the correlation information, and specifies a first equal pressure valve opening time that is the equal pressure valve opening time. The second equal pressure valve opening time can be set based on the second equal pressure valve opening time.

According to the above configuration, even if it is not possible to set the target oxygen concentration with the first equal pressure valve opening time, the oxygen concentration can be set close to the target oxygen concentration with the first equal pressure valve opening time. With an equal pressure opening time of , the target oxygen concentration can be easily set.

The above object is to provide a plurality of adsorption parts that generate oxygen by introducing compressed air and adsorbing nitrogen with an adsorbent, and a tank part that accommodates the oxygen discharged from the adsorption parts. It has an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing the oxygen pressure in the plurality of adsorption sections, and an oxygen concentration setting means for arbitrarily setting the concentration of the oxygen. An oxygen concentrator system comprising an oxygen concentrator and an object that is connected to the oxygen concentrator and is an oxygen supply destination, the tank section of the oxygen concentrator having a specific Oxygen generated to have a specific concentration at a flow rate is stored, and a pressure measuring section that measures the pressure inside the tank section is connected to the tank section, and based on fluctuations in the pressure of the pressure measuring section, the tank section is connected to the tank section. , an oxygen flow rate information determining unit that determines oxygen flow rate change information that is change information of the oxygen flow rate; and adjusting the oxygen concentration to the oxygen concentration by changing the opening time of the equal pressure valve unit based on the oxygen flow rate change information. This is achieved by an oxygen concentrator system characterized by comprising: an equal pressure valve regulator;

Preferably, the object of the oxygen concentrator system is characterized in that a flow rate adjustment section is formed therein.

According to the configuration, even when the flow rate is changed by the flow rate adjusting section formed in the object, the change in the flow rate can be automatically detected and the oxygen concentration can also be adjusted.

The above object is to provide a plurality of adsorption parts that generate oxygen by introducing compressed air and adsorbing nitrogen with an adsorbent, and a tank part that accommodates the oxygen discharged from the adsorption parts. The apparatus includes an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing the oxygen pressure in the plurality of adsorption sections, and an oxygen concentration setting means for arbitrarily setting the concentration of the oxygen. The tank section contains oxygen that has been generated in advance to a specific concentration at a specific flow rate, and a pressure measuring section that measures the pressure inside the tank section is connected to the tank section. A method of controlling an oxygen concentrator, wherein the oxygen flow rate information determining unit of the oxygen concentrator determines oxygen flow rate change information that is change information of the oxygen flow rate based on a change in pressure of the pressure measuring unit. The control of the oxygen concentrator is characterized in that the equal pressure valve adjustment section of the oxygen concentrator adjusts the oxygen concentration to the oxygen concentration by changing the opening time of the equal pressure valve section based on the oxygen flow rate change information. This is accomplished by a method.

The above object is to provide a plurality of adsorption parts that generate oxygen by introducing compressed air and adsorbing nitrogen with an adsorbent, and a tank part that accommodates the oxygen discharged from the adsorption parts. The apparatus includes an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing the oxygen pressure in the plurality of adsorption sections, and an oxygen concentration setting means for arbitrarily setting the concentration of the oxygen. The tank section contains oxygen that has been generated in advance to a specific concentration at a specific flow rate, and a pressure measuring section that measures the pressure inside the tank section is connected to the tank section. The oxygen concentrator includes a function in which an oxygen flow rate information determining unit of the oxygen concentrator determines oxygen flow rate change information that is change information of the oxygen flow rate based on a change in pressure of the pressure measuring unit; An oxygen concentrator control program for realizing a function in which an equal pressure valve adjustment section of the concentrator adjusts the oxygen concentration by changing the opening time of the equal pressure valve section based on the oxygen flow rate change information. achieved.

As explained above, the present invention provides an oxygen concentrator, an oxygen concentrator system, a method for controlling an oxygen concentrator, and an oxygen concentrator that can automatically adjust the oxygen concentration according to changes in the oxygen flow rate in the oxygen concentrator. It has the advantage of being able to provide control programs.

1 is a schematic diagram showing the main configuration of an "animal oxygen concentrator system 500" which is an example of an oxygen concentrator system according to an embodiment of the present invention. 2 is a schematic diagram showing the upper part of the animal oxygen concentrator 1 shown in FIG. 1. FIG. 1 is a schematic diagram showing an example of the internal configuration of a main body 2 of an animal oxygen concentrator 1 and an animal anesthesia machine 200. FIG. It is a schematic diagram showing an oxygen concentrator for animals 1 and an anesthesia machine for animals 200. 2 is a schematic block diagram showing the main configuration of the "animal oxygen concentrator 1" in FIG. 1. FIG. 6 is a schematic block diagram showing the main configuration of the various information storage section 110 of FIG. 5. FIG. It is a schematic flowchart which shows the main operation example of the oxygen concentrator system 500 for animals. It is another schematic flowchart which shows the main operation example of the oxygen concentrator system 500 for animals. It is another schematic flowchart which shows the main operation example of the oxygen concentrator system 500 for animals.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and the like.
Since the embodiments described below are preferred specific examples of the present invention, various technically preferable limitations are attached thereto. Unless otherwise specified, the embodiments are not limited to these embodiments.

(Overall configuration of animal oxygen concentrator system 500)
FIG. 1 is a schematic diagram showing the main configuration of an "animal oxygen concentrator system 500" which is an example of an oxygen concentrator system according to an embodiment of the present invention.
As shown in FIG. 1, the animal oxygen concentrator system 500 includes an animal oxygen concentrator 1, which is an example of an oxygen concentrator, and a target object, such as a veterinary anesthesia machine 200. However, the animal anesthesia machine 200 is configured to supply oxygen.
Therefore, the veterinary anesthesia machine 200 is an example of the "oxygen provider".
The "animal oxygen concentrator 1", the "animal anesthesia machine 200", etc. will be explained below.

(Main external configuration of animal oxygen concentrator 1)
FIG. 1 is a perspective view showing an embodiment of the animal oxygen concentrator 1 of the present invention, and FIG. 2 is a schematic diagram showing the upper part of the animal oxygen concentrator 1 shown in FIG.
The animal oxygen concentrator 1 shown in FIGS. 1 and 2 is also referred to as an animal oxygen concentrator, and is preferably a portable (also referred to as portable or mobile) oxygen concentrator.

As the principle of generating concentrated oxygen in the animal oxygen concentrator 1, for example, compressed air force fluctuation adsorption method (PSA) using compressed air is used.
In the animal oxygen concentrator 1 shown in FIGS. 1 and 2, the value of the oxygen concentration is not fixed, and the user can select the The oxygen concentration value can be arbitrarily set on the oxygen concentrator 1 side.

As an example, the basic oxygen generation performance of the animal oxygen concentrator 1 is that the oxygen flow rate is 10 L/min and the oxygen concentration is 50%.
The animal oxygen concentrator 1 can adjust the oxygen concentration between 25% and 95% in a predetermined flow rate range, for example, 2 L/min.
However, the numerical examples of the oxygen flow rate and oxygen concentration described above are merely examples, and are not limited thereto. An example of an object to which oxygen is supplied is an anesthesia machine for animals, and structural examples thereof will be explained in detail later.

As shown in FIGS. 1 and 2, the animal oxygen concentrator 1 includes a main body 2, an operation panel section 3, and casters 4 at four corners.
The main body 2 has a front part 5 and a rear part 6. Four casters 4 are attached to the bottom of the main body 2, and the animal oxygen concentrator 1 can be freely moved on the floor using the casters 4.

As shown in FIGS. 1 and 2, the operation panel section 3 is provided on the upper part of the front section 5, and the operation panel section 3 includes a power switch 7 and an oxygen concentration setting for arbitrarily setting the oxygen concentration. For example, the device includes an oxygen concentration adjustment operation section 8, an oxygen concentration display section 9, and an oxygen outlet section 10.
As shown in FIG. 1, the operation surface of the operation panel section 3 is slightly inclined forward toward the user to facilitate operation by the user.

As shown in FIG. 2, the oxygen concentration adjustment operation section 8 and the display section 9 are arranged between the power switch 7 and the oxygen outlet section 10.
The power switch 7 can be pressed to start the animal oxygen concentrator 1, and can be pressed again to stop the operation of the animal oxygen concentrator 1.
The oxygen concentration adjustment operation section 8 can arbitrarily set the concentration of oxygen supplied from the oxygen outlet section 10 through the tube 11 to the veterinary anesthesia machine 200, which will be described later.

The oxygen concentration adjustment operation section 8 has an upward arrow 8A, a downward arrow 8B, and an oxygen concentration adjustment enable button 8C.
The up arrow 8A, the down arrow 8B, and the oxygen concentration adjustment enable button 8C are electrically connected to the control section 100 shown in FIG. 2.
When the user presses the up arrow 8A, the value of the oxygen concentration to be adjusted increases, and when the user presses the down arrow 8B, the value of the oxygen concentration to be adjusted decreases.
Further, only when the user presses the oxygen concentration adjustment enable button 8C, the control unit 100 can confirm and enable the operation of adjusting the oxygen concentration value using the up arrow 8A and the down arrow 8B.

This prevents the oxygen concentration value from changing due to the user carelessly touching the up arrow 8A and down arrow 8B.
That is, unless the user presses the oxygen concentration adjustment enable button 8C, the control unit 100 does not accept changes in oxygen concentration using the up arrow 8A and down arrow 8B, thereby preventing erroneous operation.

The display unit 9 in FIGS. 1 and 2 is, for example, a liquid crystal display device, and is capable of two-digit, seven-segment color digital display.

The oxygen concentration value set by the user is displayed on the oxygen concentration display section 9 as, for example, "50"% or "40"%.
If you press the up/down switch 8A or 8B to set a desired oxygen concentration and leave it for 3 seconds, the control unit 100 automatically determines the oxygen concentration value and sets the oxygen concentration. The display section 9 changes from a blinking state to a constantly lit state.

As shown in FIG. 1, the oxygen outlet section 10 of the main body 2 can be removably connected to a flexible tube 11 using a connector 12, and oxygen at a predetermined concentration is passed through the tube 11 for animal anesthesia. It can be supplied to the container 200.

(Example of internal configuration of main body 2 of animal oxygen concentrator 1, etc.)
FIG. 3 is a schematic diagram showing an example of the internal configuration of the main body 2 of the animal oxygen concentrator 1 and the animal anesthesia machine 200.
The oxygen outlet section 10 of the animal oxygen concentrator 1 is removably connected in an airtight manner to one end of the tube 11 using a connector 12.
The other end of the tube 11 is airtightly and removably connected to the animal anesthesia machine 200 using a connector 11C. Thereby, oxygen of a predetermined concentration generated in the animal oxygen concentrator 1 is supplied to the animal anesthesia machine 200 through the tube 11 at a predetermined oxygen flow rate required by the animal anesthesia machine 200 side.

As shown in FIG. 3, the oxygen concentrator unit section 20 is housed within the main body 2. As shown in FIG.
The oxygen concentrating unit section 20 includes an adsorption section such as a first adsorption section 21 and a second adsorption section 22, a first switching valve 31 and a second switching valve 32, and an equal pressure valve section such as an equal pressure valve 23. , two check valves 41 and 42, a tank section such as a product tank 45, a silencer 46, a compressor 50, a pressure measuring section such as a pressure sensor 51, an oxygen sensor 55, and a throttle valve 56. , and a control unit 100.

As shown in FIG. 3, pipes 60, 61, 62, 63, 64, 65, and 66 for passing compressed air and generated oxygen are shown in bold lines.
The first adsorption part 21 is a cylindrical body having an inlet part 21P and an outlet part 21Q, and houses an adsorbent 21R inside.

Similarly, the second adsorption part 22 is a cylinder having an inlet part 22P and an outlet part 22Q, and houses an adsorbent 22R inside.
The raw air AR is compressed by driving the compressor 50 to generate compressed air.
The first adsorption section 21 and the second adsorption section 22 each introduce compressed air, adsorb nitrogen from the compressed air with internal adsorbents 21R and 22R, and discharge generated and concentrated oxygen from each outlet section 21Q and 22Q. do.
This discharged concentrated oxygen is temporarily stored in the product tank 45 through the pipe 66.

As the adsorbents 21R and 22R, a nitrogen adsorbent such as zeolite is used, but the present invention is not limited thereto.
In FIG. 3, the compressor 50, the first switching valve 31, and the second switching valve 32 are connected through pipes 61 and 62, and the first switching valve 31 and the second switching valve 32 are connected through a pipe 63.
The first suction section 21 is connected to the middle of the pipe 64, and the second suction section 22 is connected to the middle of the pipe 65. Each end of the pipes 64 and 65 is connected to the equal pressure valve 23.

The first switching valve 31 and the second switching valve 32 are switched by a command from the control unit 100.
The first switching valve 31 and the second switching valve 32 are arranged on the inlet portions 21P and 22P sides of the first suction section 21 and the second suction section 22, respectively.
The control unit 100 alternately introduces compressed air into the first suction section 21 and the second suction section 22 by switching the first switching valve 31 and the second switching valve 32. When the adsorption state of the adsorbent becomes saturated in one of the two adsorption sections 22, nitrogen is discharged to the outside, and oxygen is taken out from the other of the first adsorption section 21 and the second adsorption section 22.

Further, the equal pressure valve 23 is arranged on the side of the outlet section 21Q of the first suction section 21 and the outlet section 22Q of the second suction section 22, so that one of the first suction section 21 and the second suction section 22 has a predetermined internal pressure. The pressure of the exhausted oxygen is equalized by opening when the gas is discharged.
Check valves 41 and 42 as non-return valves shown in FIG. 3 are connected between the pipe 66 and the outlet section 21Q of the first suction section 21 and the outlet section 22Q of the second suction section 22, respectively.
The check valves 41 and 42 send the generated oxygen to the product tank 45 side while preventing the generated oxygen from flowing back from the piping 66 side to the first adsorption section 21 and second adsorption section 22 side.

A product tank 45 is connected between the oxygen outlet section 10 and the pipe 66.
The product tank 45 has a pressure sensor 51 that detects the pressure of oxygen within the product tank 45 (an example of pressure change information).
The pressure sensor 51 notifies the control unit 100 of a pressure signal SP representing the pressure of oxygen in the product tank 45 detected by the pressure sensor 51.
Thereby, the control unit 100 can grasp the amount of concentrated oxygen stored in the product tank 45, etc.

In this embodiment, as will be described later, changes in the flow rate of the animal anesthesia machine 200 are automatically determined based on the value of the pressure sensor.

An oxygen sensor 55 is arranged in the middle of the pipe 66 to detect the concentration of oxygen passing through the pipe 66.
The oxygen sensor 55 notifies the control unit 100 of an oxygen concentration signal SS representing the concentration of oxygen passing through the pipe 66 detected by the oxygen sensor 55.
This oxygen sensor 55 is preferably a zirconia type oxygen sensor, and detects the concentration of oxygen discharged from the first adsorption section 21 and the second adsorption section 22 to the oxygen outlet section 10 side.

(Configuration of animal anesthesia machine 200)
Next, with reference to FIG. 4, the animal anesthesia machine 200 will be described.
FIG. 4 is a schematic diagram showing the animal oxygen concentrator 1 and the animal anesthesia machine 200 described above.
The animal oxygen concentrator 1 and the animal anesthesia machine 200 constitute an animal oxygen concentrator system 500 for anesthetizing animals.
In addition, in FIG. 4, the animal oxygen concentrator 1 is shown in a simplified manner to simplify the drawing.

The animal anesthesia machine 200 shown in FIG. 4 anesthetizes an animal by supplying an anesthetic gas consisting of oxygen at a predetermined concentration, medical gas such as N ₂ O (laughing gas), and air.
Oxygen at a predetermined concentration is supplied from the animal oxygen concentrator 1 through the tube 11, mixed with N ₂ O and gas with a predetermined oxygen concentration, and sent to the breathing circuit section 202.
The animal anesthesia machine 200 has a flow rate adjustment section 219, and the flow rate adjustment section 219 is configured to be able to adjust the flow rate of anesthetic gas by being operated by an operator.
That is, by operating the flow rate adjustment section 219, the flow rate of the anesthetic gas can be changed.

In the anesthesia circuit section 201 shown in FIG. 4, an anesthesia gas containing oxygen and N ₂ O is circulated in the breathing circuit section 202 while adjusting the flow rate as shown by arrows R1 and R2, and is circulated through the supply member 205. fed to animals.
The anesthetic gas exceeding the predetermined pressure is discharged to the outside from the path 206 as unnecessary anesthetic gas by the operation of the bag 203.

The animal oxygen concentrator 1, the animal anesthesia machine 200, etc. in FIG. 1 include a computer, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a hard disk, etc. connected via bus.

FIG. 5 is a schematic block diagram showing the main configuration of the "animal oxygen concentrator 1" shown in FIG.
As shown in FIG. 5, the animal oxygen concentrator 1 includes a "control unit 100", a "communication device 101" for communicating with other devices, etc., and a "communication device 101" for generating time information. In addition to controlling the clock device 102, oxygen sensor 55, pressure sensor 51, etc., it also controls various information storage units 110, etc.

FIG. 6 is a schematic block diagram showing the main configuration of the various information storage section 110 in FIG. 5, and the contents thereof will be described later.

7 to 9 are schematic flowcharts showing main operation examples of the animal oxygen concentrator system 500.
In this embodiment, an example will be described in which an anesthetic gas is provided to an animal using the animal oxygen concentrator system 500 shown in FIG. 1.

First, the process proceeds to step (hereinafter referred to as "ST") 1 in FIG.
In ST1, for example, a veterinarian A who is a user of the veterinary anesthesia machine 200 sets the oxygen flow rate on the veterinary anesthesia machine 200 side to 2 L/min. Operate the concentration adjustment operation section 8 to set the oxygen concentration to 50%.

The input "oxygen concentration (50%)" data is then stored as input information in the "input information storage section 112" in FIG. 6.
In addition, the “oxygen flow rate information judgment unit 121 (program) 121” of the animal oxygen concentrator 1 makes settings in the animal anesthetizer 200 based on the value of the “pressure sensor 51” that detects the oxygen pressure in the product tank 45. The flow rate (for example, 2 L/min) is recognized and stored.

Specifically, the animal oxygen concentrator 1 uses the "pressure/flow table" shown in FIG. /Flow rate table storage unit 122 (an example of a correspondence information storage unit)”.
Therefore, the "oxygen flow rate information determining unit 121" determines the oxygen flow rate by referring to the value of the "pressure sensor 51" and the "pressure/flow rate table" and stores it.

For example, information that the pressure in the "product tank 45" when the oxygen flow rate is 2 L/min varies from "maximum pressure 140 KPa" to "lower pressure limit: 120 KPa" is stored in the "pressure/flow rate table".

Next, proceed to ST2. In ST2, the animal oxygen concentrator 1 has an "equal pressure valve opening time table" which is an example of correlation information that is a table of opening times of the equal pressure valve 23.
This equal pressure valve opening time table includes the equal pressure valve opening time (for example, 50%) to achieve a specific oxygen concentration (an example of oxygen concentration information) (for example, 50%) at a specific oxygen flow rate (for example, 2 L/min). .1 second) is stored in the "equal pressure valve opening time table storage section (an example of a "correlation information storage section") 113" in FIG.

Therefore, the "equal pressure valve opening time determining unit (program) 114" shown in FIG. For example, the opening time of the "equal pressure valve" (for example, 5.1 seconds) is specified by referring to the "equal pressure valve opening time table" (for example, 2 L/min) and the "equal pressure valve opening time table".
Then, it is stored in the "specific equal pressure valve opening time storage unit 115" in FIG. 6 as "specific equal pressure valve opening time (5.1 seconds)".

Next, proceed to ST3. In ST3, the "equal pressure valve adjustment section (program) 118" in FIG. 6 operates, and based on the "specific equal pressure valve opening time (5.1 seconds)" in the "specific equal pressure valve opening time storage section 115" in FIG. The opening time of the "equal pressure valve 23" in FIG. 1 is specified.

Next, the process proceeds to ST4, where the "oxygen concentration adjustment unit (program) 119" in FIG. 6 operates, and the "specific equal pressure valve opening time (5.1 seconds) (an example of the first equal pressure valve opening time)" described above Based on this, the "equal pressure valve 23" is opened to generate oxygen. (First oxygen concentration adjustment step)

Next, proceed to ST5. In ST5, after a certain period of time (for example, 2 minutes, etc.), the oxygen concentration generated in ST4 is measured by the oxygen sensor 55 shown in FIG. 3 or the like.
Then, the "oxygen concentration judgment unit (program) 120" in FIG. Determine whether it fits or not.

Next, in ST6, if the oxygen concentration determining section 120 determines that the oxygen concentration is not within ±1% of the input information (50%), the process proceeds to ST7.

In ST7, the "equal pressure valve adjustment section 118" in FIG. 6 operates, and changes the "specific equal pressure valve opening time (5.1 seconds)" in the "specific equal pressure valve opening time storage section 115" in FIG. A changed equal pressure valve opening time (an example of a second equal pressure valve opening time) is generated.
Then, oxygen is generated based on this "changed equal pressure valve opening time". (Second oxygen concentration adjustment step).

Specifically, the oxygen concentration (for example, 52%) detected by the oxygen sensor 55 is compared with the oxygen concentration (for example, 50%) of the input information, a difference (for example, 2%) is calculated, and the difference is calculated. The "opening time" of the "equal pressure valve 23" is adjusted by the time corresponding to .

For example, if the actual oxygen concentration is higher than the oxygen concentration setting (50%), the opening time of the equal pressure valve 23 is further increased by 0.1 seconds, and the difference is detected again after 2 minutes.
On the other hand, if the actual oxygen concentration is lower than the oxygen concentration setting (50%), 0.1 seconds is subtracted.
In this way, the target oxygen concentration is achieved by detecting the difference at a certain time and adding or minus the opening time of the equal pressure valve 23.

Then, the "equal pressure valve opening time table data update unit (program) 116" in FIG. 6 operates, corrects the "specific equal pressure valve opening time" based on the "opening time" that has reached the target value, and The "equal pressure valve opening time" is calculated and stored in the "corrected specific equal pressure valve opening time table storage unit 117" in FIG. 6, and the "equal pressure valve opening time table" is updated.
Therefore, from the next time (for example, ST11, etc. described later), the opening time of the equal pressure valve 23 will be specified based on this "corrected specific equal pressure valve opening time", so the opening time of the "equal pressure valve 23" will be specified with extremely high accuracy. can do.
In particular, even if the zeolite has deteriorated, the "equal pressure valve opening time" can be set to match the state of deterioration.

Furthermore, in this embodiment, if the oxygen concentration in the input information is not within plus or minus 1% in the first "second oxygen concentration adjustment step", the "second oxygen concentration adjustment step" is repeated. Therefore, the oxygen concentration can be reliably kept within plus or minus 1% of the input information (50%).

In this way, in this embodiment, even if the target oxygen concentration cannot be set in the "first oxygen concentration adjustment step", the "first oxygen concentration adjustment step" can reach the target oxygen concentration. By executing the subsequent "second oxygen concentration adjustment step," the target value can be easily and quickly set.

On the other hand, if the oxygen concentration determination unit 120 determines in ST6 that the oxygen concentration is within 1% of the input information (50%), the process proceeds to ST8.
In ST8, oxygen is supplied to the animal anesthesia machine 200 with the input information "oxygen concentration 50%".

In this manner, in this embodiment, oxygen can be automatically provided to the animal anesthesia machine 200 at a desired oxygen concentration (50%).

Next, proceed to ST9. In ST9, whether or not the "anesthetic (gas)" flow rate adjustment section 219 on the animal anesthesia machine 200 side has been changed by the user is determined by checking the "oxygen The flow rate information judgment unit (program) 121 makes the judgment.

Specifically, the animal oxygen concentrator 1 uses the "pressure/flow table" shown in FIG. /Flow rate table storage unit 122 (an example of a correspondence information storage unit)”.
Therefore, the "oxygen flow rate information determining unit 121" refers to the value of the "pressure sensor 51" and the "pressure/flow rate table" to determine the change in the oxygen flow rate.

For example, information that the pressure in the "product tank 45" when the oxygen flow rate is 2 L/min varies within the range of "maximum pressure 140 KPa" to "lower pressure limit: 120 KPa" is stored in the "pressure/flow table". (Example of oxygen flow rate change information)

Therefore, the "oxygen flow rate information determining unit 121" of the present embodiment monitors the oxygen pressure in the "product tank 45", and if the pressure changes within the range of 140 KPa to 120 KPa, the oxygen flow rate information judgment unit 121 monitors the oxygen pressure in the "product tank 45", and if the pressure changes within the range of 140 KPa to 120 KPa, the oxygen flow rate information judgment unit 121 monitors the oxygen pressure in the "product tank 45", and if the pressure changes within the range of 140 KPa to 120 KPa, it is determined that the oxygen pressure is 2 L/min. I judge that.

On the other hand, when the pressure change is from 140 KPa to 80 KPa, which is less than 120 KPa, it is determined that the pressure exceeds 2 L/min, and it is determined that the flow rate has been changed on the animal anesthesia machine 200 side.
In this embodiment, an example in which the "flow rate" is changed from "2 L/min" to "10 L/min" will be described below.

As described above, in this embodiment, even if the operator or the like changes the flow rate in the animal anesthesia machine 200, the animal oxygen concentrator 1 can automatically detect the change in the flow rate. .

In ST9, a change in the flow rate is detected, and if left as is, the oxygen concentration will drop from the input information (50%).
Therefore, the process advances to ST10. In ST10, the "equal pressure valve opening time determining unit 114" operates, and the "corrected specific equal pressure valve opening time" which is the opening time of the equal pressure valve 23 to become "50%" at "10 L/min" is set to the "corrected specific equal pressure valve opening time". It is acquired from the data of the "corrected equal pressure valve opening time table" in the "equal pressure valve opening time table storage unit 117".

As described above, in this embodiment, the opening time of the "equal pressure valve" is specified in order to match the oxygen concentration to the input information (desired information) based on the automatically acquired flow rate change.

Next, the process advances to ST11. In ST11, the "oxygen concentration adjustment unit 119" in FIG. 6 opens the "equal pressure valve 23" based on the "corrected specific equal pressure valve opening time" of the "corrected specific equal pressure valve opening time table" in ST10, and in ST12, the oxygen concentration adjustment unit 119 in FIG. (first oxygen concentration adjustment step).

Next, the process advances to ST13. In ST13, the generated oxygen concentration is measured by the "oxygen sensor 55", and the "oxygen concentration determination unit 120" in FIG. Determine whether it is within 1%.

Next, in ST14, when it is determined that the value of the "oxygen sensor 55" is not within plus or minus 1% of the oxygen concentration of 50% of the input information, the process proceeds to ST15.

In ST15, the "oxygen concentration adjustment unit 119" in FIG. 6 changes the "corrected specific equal pressure opening time" to generate a "changed equal pressure valve opening time", and applies the "changed equal pressure valve opening time" to the "changed equal pressure valve opening time". Based on the oxygen concentration, oxygen is generated (second oxygen concentration adjustment step).

Specifically, the oxygen concentration (for example, 52%) detected by the oxygen sensor 55 is compared with the oxygen concentration (for example, 50%) of the input information, a difference (for example, 2%) is calculated, and the difference is calculated. The "open time (an example of open time information)" of the "equal pressure valve 23" is adjusted by the time corresponding to .

Next, the process advances to ST16. In ST16, oxygen is supplied to the animal anesthesia machine 200 with the input information "oxygen concentration 50%".

In this embodiment, even if the operator or the like changes the flow rate in the animal anesthesia machine 200, the animal oxygen concentrator 1 can automatically detect the change in the flow rate. can.
Furthermore, based on the automatically acquired flow rate change, the opening time of the "equal pressure valve" is also automatically calculated in order to match the oxygen concentration to the input information (desired information).
Furthermore, even if it is not possible to set the target oxygen concentration in the above-mentioned "first oxygen concentration adjustment step", the "first oxygen concentration adjustment step" will reach near the target, so the subsequent "oxygen concentration adjustment step" By executing "Oxygen concentration adjustment step 2", the target value can be easily and quickly set.

As described above, in the present embodiment, the result of adjusting the flow rate by the flow rate adjustment unit 219 of the animal anesthetizer 200 is determined by the flow rate on the animal oxygen concentrator 1 side, and the flow rate is determined on the animal oxygen concentrator 1 side. The opening time of the equal pressure valve 23 is controlled by the oxygen concentration arbitrarily set on the section 3, and as a result, a flow rate of an arbitrary oxygen concentration is output from the flow meter outlet (supply member 205) attached to the animal anesthesia machine 200. It is something that can be achieved.

In the embodiments described above, the case where it is realized as an apparatus has been described as an example, but the present invention is not limited to this, and the present invention can be implemented as a program that can be executed by a computer on a magnetic disk, optical disk, magneto-optical disk, etc. It may be stored and distributed on a storage medium such as a disk or a semiconductor memory.

Further, the storage medium may be any storage medium that can store a program and is readable by a computer. The storage format of the storage medium is not particularly limited.

In addition, the OS (operating system), MW (middleware) such as database management software, network software, etc. that are running on the computer based on the instructions of the program installed on the computer from the storage medium realize this embodiment. A part of each process may be executed.

Furthermore, the storage medium in the present invention is not limited to a medium independent of a computer, but also includes a storage medium in which a program transmitted via a LAN, the Internet, etc. is downloaded and stored or temporarily stored.

Further, the computer in the present invention may execute each process in the present embodiment based on a program stored in a storage medium, and may be a device consisting of a single personal computer or the like, or a plurality of devices connected to a network. It may also be a system that is

In addition, the computer in the present invention is not limited to a personal computer, but also includes arithmetic processing units included in information processing equipment, and is a general term for equipment and devices that can realize the functions of the present invention by a program. .

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the scope of the claims. A part of the configuration of the above embodiment may be omitted or may be arbitrarily combined in a manner different from that described above.

DESCRIPTION OF SYMBOLS 1...Animal oxygen concentrator, 2...Main body, 3...Operation panel section, 4...Casters, 8...Oxygen concentration adjustment operation section, 11...Tube, 20... Oxygen concentration unit section, 21... First adsorption section, 22... Second adsorption section, 23... Equal pressure valve, 45... Product tank, 55... Oxygen sensor, 100... Control section , 101... Communication device, 102... Timing device, 110... Various information storage section, 111... Zeolite start time information storage section, 112... Input information storage section, 113... Equal pressure valve Opening time table storage section, 114... Equal pressure valve opening time determining section, 115... Specific equal pressure valve opening time storage section, 116... Equal pressure valve opening time table data updating section (program), 117... Correction Specific equal pressure valve opening time table storage unit, 118... Equal pressure valve adjustment unit (program), 119... Oxygen concentration adjustment unit (program), 120... Oxygen concentration determination unit (program), 121... Oxygen Flow rate information judgment unit (program), 122... Pressure/flow rate table storage unit, 200... Veterinary anesthesia machine, 219... Flow rate adjustment unit, 500... Animal oxygen concentrator system

Claims (8)

Multiple adsorption units that generate oxygen by introducing compressed air and adsorbing nitrogen with an adsorbent;
a tank section that accommodates oxygen discharged from the adsorption section;
an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing oxygen pressure in the plurality of adsorption sections;
An oxygen concentrator comprising an oxygen concentration setting means for arbitrarily setting the concentration of oxygen,
Oxygen generated in advance at a specific concentration at a specific flow rate is stored in the tank section, and a pressure measuring section that measures the pressure inside the tank section is connected to the tank section,
an oxygen flow rate information determination unit that determines oxygen flow rate change information that is change information in the oxygen flow rate based on a change in pressure of the pressure measurement unit;
An oxygen concentrator comprising: an equal pressure valve adjustment section that adjusts the oxygen concentration to the oxygen concentration by changing an opening time of the equal pressure valve section based on the oxygen flow rate change information. a correspondence information storage section that stores correspondence information between pressure change information in the tank section and the oxygen flow rate;
The oxygen concentrator according to claim 1, wherein the oxygen flow rate information determining unit determines the oxygen flow rate change information based on information in the correspondence information storage unit. comprising a correlation information storage unit that stores correlation information between opening time information, oxygen concentration information, and oxygen flow rate information of the equal pressure valve,
The oxygen concentrator according to claim 1 or 2, wherein the equal pressure valve adjustment section specifies the equal pressure valve opening time based on the correlation information. The equal pressure valve adjusting section specifies a first equal pressure valve opening time, which is the equal pressure valve opening time, based on the correlation information, and specifies a second equal pressure valve opening time based on the first equal pressure valve opening time. The oxygen concentrator according to claim 3, characterized in that the oxygen concentrator is configured to be able to set a time. Multiple adsorption units that generate oxygen by introducing compressed air and adsorbing nitrogen with an adsorbent;
a tank section that accommodates oxygen discharged from the adsorption section;
an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing oxygen pressure in the plurality of adsorption sections;
an oxygen concentrator having an oxygen concentration setting means for arbitrarily setting the concentration of oxygen;
An oxygen concentrator system that is connected to the oxygen concentrator and includes an object that is an oxygen supply destination that supplies oxygen,
The tank section of the oxygen concentrator contains oxygen that has been generated in advance to a specific concentration at a specific flow rate, and the tank section includes a pressure measurement device that measures the pressure inside the tank section. parts are connected,
an oxygen flow rate information determination unit that determines oxygen flow rate change information that is change information in the oxygen flow rate based on a change in pressure of the pressure measurement unit;
An oxygen concentrating system comprising: an equal pressure valve adjustment section that adjusts the oxygen concentration to the oxygen concentration by changing an opening time of the equal pressure valve section based on the oxygen flow rate change information. The oxygen concentrating system according to claim 5, wherein the object has a flow rate adjustment section formed therein. Multiple adsorption units (and
a tank section that accommodates oxygen discharged from the adsorption section;
an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing oxygen pressure in the plurality of adsorption sections;
an oxygen concentration setting means for arbitrarily setting the concentration of oxygen;
Oxygen generated in advance at a specific concentration at a specific flow rate is stored in the tank section, and a pressure measuring section that measures the pressure inside the tank section is connected to the tank section. 1. A method for controlling an oxygen concentrator, comprising:
The oxygen flow rate information determination unit of the oxygen concentrator determines oxygen flow rate change information, which is change information of the oxygen flow rate, based on the pressure fluctuation of the pressure measurement unit,
A method for controlling an oxygen concentrator, characterized in that an equal pressure valve adjustment section of the oxygen concentrator adjusts to the oxygen concentration by changing an opening time of the equal pressure valve section based on the oxygen flow rate change information. Multiple adsorption units that generate oxygen by introducing compressed air and adsorbing nitrogen with an adsorbent;
a tank section that accommodates oxygen discharged from the adsorption section;
an equal pressure valve section disposed on the outlet side of the plurality of adsorption sections for equalizing oxygen pressure in the plurality of adsorption sections;
an oxygen concentration setting means for arbitrarily setting the concentration of oxygen;
Oxygen generated in advance at a specific concentration at a specific flow rate is stored in the tank section, and a pressure measuring section that measures the pressure inside the tank section is connected to the tank section. In the oxygen concentrator,
A function in which the oxygen flow rate information determination unit of the oxygen concentrator determines oxygen flow rate change information that is change information of the oxygen flow rate based on the fluctuation in pressure of the pressure measurement unit;
Control of the oxygen concentrator to achieve a function in which the equal pressure valve adjustment section of the oxygen concentrator adjusts the oxygen concentration by changing the opening time of the equal pressure valve based on the oxygen flow rate change information. program.

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