JPH08198602A - Ozonizer provided with oxygen extractor - Google Patents

Abstract

PURPOSE: To surely prevent the generation of NOx and the highly dangerous nitric acid thereafter by making the moisture, etc., in the atmosphere adsorbed before the atmosphere is introduced into an ozonizer, forcing the atmosphere under pressure into an adsorbent bed to concentratedly separate gaseous oxygen and the obtain concd. gaseous oxygen, automatically detecting the deterioration of the adsorbent due to the moisture generated with time and recognizing an appropriate adsorbent replacing time. CONSTITUTION: Two adsorption tanks 7 and 8 each contg. an adsorbent 9 and a gaseous oxygen extractor 1 formed of a gaseous oxygen tank 18 into which the concd. gaseous oxygen leaving the adsorption tanks is introduced are installed in a line connecting a compressor 4 and an ozonizer 30. Further, a humidity sensor 17 for detecting a set humidity value and operating the driving source for the compressor 4, ozonizer 30, etc., under control is set in the oxygen tank 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone generator equipped with an oxygen extractor, and is particularly useful in food processing plants and the like where hygiene requires special attention. It relates to an ozone generator with a recognized oxygen extractor.

[0002]

2. Description of the Related Art In processing plants for foods, especially seafood, meat, and fresh vegetables, ozone is used from the viewpoint of environmental hygiene, that is, ozone air and ozone water are used in the processing room to make indoors. Comprehensive sanitary management within the processing plant is widely implemented by cleaning the air and cleaning the floor.

More specifically, by flowing ozone water in which tap water is mixed with ozone onto a floor surface, a drain, etc.,
The odor that tends to fill the room can be removed, and ozone is supplied to the entire room at night when work is not performed to prevent the generation of mold and to prevent slime on the floor and food poisoning. Effectively sterilizes the airborne bacteria that cause
Can be removed.

Conventionally, in order to ensure the hygiene of food processing plants, cleaning has been carried out using residual chemicals such as chlorine, but it is not safe and it is specified every cleaning operation. Diluting work was required, and the extra work for this was a big downside in terms of work efficiency.

When the raw material air supplied to the ozone generator in the ozone supply mechanism for producing ozone air and ozone water contains nitrogen and water, knox occurs,
Knox reacts with water to produce dangerous nitric acid.

In recent years, in order to avoid the generation of this dangerous nitric acid, a dehumidifier, an oxygen extractor, etc. are installed as a pretreatment step for the raw material air supplied to the ozone generator,
It is widely recognized that increasing the concentration of oxygen gas as the raw material air supplied to the ozone generator further enhances the effectiveness and safety of the ozone supply mechanism. However, with the lapse of time, the functions of the dehumidifier and the oxygen extractor are deteriorated, so that there is a danger of knox and the subsequent generation of nitric acid.

Conventionally, the degree of progress of the functional deterioration of the dehumidifier and the oxygen extractor, which is directly related to the above-mentioned Knox and the subsequent generation of nitric acid, is calculated based on the durability time based on the past data of each of these devices, and However, after a predetermined operating time of each device, the parts of each device are replaced to prevent the generation of knox and the subsequent generation of nitric acid.

[0008] Further, the present invention is provided with a technical constitution corresponding to the moisture removing device or the oxygen extraction tank of the present invention, which is provided for removing moisture in oxygen gas having a high concentration sent to the ozone generator in advance. In the invention described in JP-A-5-23382 as one, in the ozone generator, by heating the hygroscopic agent in the dehumidifier by a heater, to remove the water adsorbed in the hygroscopic agent, The moisture absorbent can be regenerated and the water vapor generated by heating the moisture absorbent can be discharged out of the system by the water vapor permeable membrane of the water vapor separator.

As a result, it is described that it is not necessary to replace the hygroscopic agent, maintenance is free, the filling amount of the hygroscopic agent can be reduced to a necessary minimum, and the ozone generator as a whole can be downsized. There is.

[0010]

Conventionally, the replacement work of an oxygen extractor, particularly the adsorbent used in the oxygen extractor due to the deterioration thereof, is carried out by using the past data as a guide only when the endurance time of the adsorbent is reached. However, the durability of the adsorbent equipped in the device is not always constant, and the installation location of the oxygen extraction device or the surrounding environment where this device is installed greatly affects the durability time of those devices. A large error naturally occurs, and in this respect, it is difficult to accurately grasp the generation of Knox and subsequent nitric acid, etc. during the operation of the equipment, and particularly dangerous nitric acid generation is a safety factor in food processing plants. Will result in a large loss.

Also in the invention described in the above-mentioned JP-A-5-23382, the hygroscopic agent in the dehumidifier is not repeatedly regenerated for a long period of time by repeating heating, so that it does not regenerate over time. With the progress of the deterioration of the hygroscopic agent, it has a great influence on the production of ozone by the ozone generator, and it is not possible to completely avoid the generation of Knox and the subsequent highly dangerous nitric acid.

This invention grasps the change in humidity in oxygen gas whose concentration is directly linked to Knox in the oxygen extractor and the subsequent generation of nitric acid, and in addition, the amount of oxygen flowing down from the oxygen extractor to the ozone generator. That is, an object of the present invention is to provide an ozone generator equipped with an oxygen extractor capable of preventing more accurate knox and subsequent generation of nitric acid by grasping the oxygen concentration and controlling the operating state of the oxygen extractor. To do.

[0013]

In order to achieve the above object, an ozone generator equipped with an oxygen extractor according to the present invention has the following construction. In other words, an oxygen extraction device consisting of two adsorption tanks and an oxygen gas tank, which contains an adsorbent that adsorbs and traps moisture and permeates oxygen gas, is installed in the path connecting the compressor and the ozone generator. However, a humidity sensor for braking a drive source such as the compressor or the ozone generator is arranged in an oxygen gas tank constituting the apparatus.

In the above apparatus, the compressor, in the path connecting the oxygen extractor and the ozone generator,
It is characterized by an oxygen concentration sensor that brakes a drive source such as an ozone generator.

Further, the sequencer for controlling the operation of the oxygen gas extraction work alternately carried out in the two adsorption tanks measures the total number of times the adsorption tanks are operated per unit of time, and determines the durability of the set adsorbent. In comparison with time,
It is characterized in that a drive source such as a compressor or an ozone generator is braked by the sequencer.

[0016]

[Function] Due to the deterioration of the adsorbent or due to unforeseen causes such as poor maintenance of the adsorbent, the adsorbent's moisture and nitrogen gas adsorption and trapping power weaken, and finally the oxygen gas tank has moisture above the set value, That is, the rise in humidity is observed.

When the humidity reaches or exceeds the set value, the humidity sensor detects this atmosphere and the power source of the humidity sensor sends a signal to the sequencer, which then brakes the drive source such as the compressor or ozone generator. By issuing a signal to stop the drive source in each direction, the arrival of the adsorbent replacement time or maintenance inspection time is displayed.

For some reason, the humidity sensor is inconvenient, and a large amount of water and nitrogen gas remain without being sufficiently separated in the oxygen gas flowing out of the oxygen extraction device and before reaching the ozone generator. As a result, when the concentration of oxygen gas decreases, the oxygen concentration sensor as the second barrier detects the concentration set value, and at this time, the sequencer also issues a signal for braking each drive source.

Further, due to some circumstances, when the detection sensors installed at the two locations do not exhibit their detection ability sufficiently, water and nitrogen gas in the adsorption tank containing the adsorbent are alternately repeated. The number of times of adsorption work is measured, and when the total measurement time of the sequencer reaches the preset adsorbent endurance time, the sequencer is activated regardless of the two detection sensors, and the third A signal for braking each drive source is issued as a gateway.

[0020]

EXAMPLE Next, a concrete example of an ozone generator equipped with an oxygen extraction device according to the present invention will be described as an ozone generator, more specifically, as a device connected to supply of ozone air and ozone water. However, description will be made with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an ozone generator equipped with an oxygen extractor according to the present invention. Reference numeral 1 is an oxygen extractor, which is connected to an air inlet provided with a fan 2 also serving as a compressor cooling. A compressor 4 is installed via a filter 3, and the compressor 4 and an adsorbent 9 suitable for adsorbing and capturing a plurality of, i.e., two, nitrogen gases and water, such as synthetic zeolite (Molecular Sieve (trade name) ), Manufactured by Union Carbide Co., Ltd.) and the first adsorption tank 7 and the second adsorption tank 8 are connected by a press-fitting pipe which is a connection path via electromagnetic valves SV1 and SV2, respectively.

A purge speed controller 11 is arranged in the circulation pipe connecting the adsorption tanks 7 and 8, and a shuttle valve 12 is arranged in the joint portion of the outflow pipe branched from the circulation pipe.

Two solenoid valves SV5 and SV6 are interposed in the second circulation pipe connecting between the adsorption tanks 7 and 8,
Both electromagnetic valves are generated between the adsorption tanks 7 and 8, and oxygen gas remaining in the tanks is sent to the adsorption tanks 7 and 8, respectively. Further, exhaust pipes with solenoid valves SV3 and SV4 interposed respectively extend from the adsorption tanks 7 and 8,
The shared silencer 15 is reached and the exhaust from the adsorption tank is executed.

The pipe extending from the shuttle valve 12 is
It is connected to an oxygen gas tank 18 in which a humidity sensor 17 is installed. A pressure gauge 20 for measuring the internal pressure of the oxygen gas tank 18 is installed in the middle of the pipe, and a pipe extending from the oxygen gas tank 18 to the ozone generator 30 is provided with a regulator 21 for adjusting the pressure of the oxygen gas tank and oxygen. A gas extraction pressure gauge 22 and a flowmeter 23 are further installed via a solenoid valve SV7.

An oxygen concentration sensor 25 is installed in the pipe section leading to the ozone generator 30. A bypass pipe is arranged in the pipe connecting the oxygen gas tank 18 and the ozone generator 30 so as to hold the solenoid valve SV7 and the flow meter 23, and the solenoid valve SV8 is interposed in the bypass pipe portion. By extending the interior of the ozone generator 30 stopped by the timer and the subsequent passage of ozone air, the life of each part is extended and the flow rate meter 23 from the ozone generator 30 is extended.
It prevents the backflow of ozone air to the.

When the solenoid valve SV7 is closed by the timer and the ozone generator 30 described later is stopped, the sequencer 1
The solenoid valve SV8 and the compressor 4 are operated by 9. The compressor 4 operates, the solenoid valve SV8 opens,
After the timer for ozone water ends, go to the ozone water circuit for 2 seconds,
After the timer for ozone air ends, go to the ozone air circuit 1
At the same time for 0 seconds, the additional air blower 33, which will be described later, is also 10
Supply air for each second.

Reference numeral 27 denotes an exhaust fan installed at the exhaust port of the oxygen extracting device 1 for discharging a gas body containing a large amount of water and nitrogen to the outside of the oxygen extracting device 1 via the silencer 15.

FIG. 2 is a block diagram showing a stopping mechanism of each drive source, which has a humidity sensor and an oxygen concentration sensor as starting means, which accompanies deterioration of the adsorbent in the adsorption tank. Humidity installed in the oxygen gas tank 18 is shown in FIG. The sensor 17 is connected to a sensor power supply unit 16, which sends a predetermined signal to a sequencer 19, and the sequencer sends various driving sources to a compressor 4, an ozone generator 30, and a solenoid valve 43 for water described later. Call out and sequencer 1
A signal is emitted from 9 to turn on the alarm lamp 14.

The oxygen concentration sensor 25 installed between the oxygen gas supply pipes connecting the oxygen gas tank 18 and the ozone generator 30 is also connected to the sensor power supply 24, and thereafter, the humidity sensor 17 is operated. The same mechanism is used for stopping various drive sources and turning on the alarm lamp 14 via the sequencer 19.

FIG. 3 is a flow chart of the ozone generator shown in FIG. 1, and FIG. 4 is a flow chart for supplying ozone air and ozone water to the ozone generator shown in FIG.

The constitution of the main members of the ozone generator shown in FIG. 3 is sufficient for the explanation of the constitution of FIG. 1 described above, but in order to further improve the efficiency of the oxygen gas extraction device 1, the compressor 4 and the first adsorption device are used. If necessary, an aftercooler 5 and a dew condensation tank 6 for the purpose of dehumidifying a single step in the atmosphere can be interposed in a pipe connecting the tank 7 and the second adsorption tank 8.

Next, referring to FIG. 4, the oxygen gas extraction apparatus 1
An ozone supply device subsequent to the ozone generator having the above will be described. An ozone generator 30 capable of generating high-purity ozone by supplying oxygen gas having a high concentration
In the ozone gas pipe extending further, a three-way switching electromagnetic valve 32 with a timer 35 is arranged, and a gas phase path and a liquid phase path are branched from the electromagnetic valve 32. First,
An air pipe communicating with the air blower 33 merges in the middle of the gas phase path, and a plurality of ozone air outlets 34, 3 are provided in the gas phase path extending toward a plurality of places in the food processing factory.
4 are installed.

On the other hand, a three-way switching electromagnetic valve 36 for preventing backflow is arranged in the liquid phase path, and a drain pipe 37 having a drain pan (not shown) at its tip is provided from the electromagnetic valve 36.
Then, the check valve 38 is interposed in the middle, and the ejector 39
The regular liquid-phase pipe 40 reaching the position is branched.

A water source (not shown) connected to a water supply pipe 41 is arranged for the ejector 39 to which ozone gas is supplied, and a water supply pressure reducing valve 42 and a water solenoid valve are provided in the water supply pipe 41. From the ejector 40 in which 43 is interposed and which further mixes ozone gas and water,
An ozone water pipe 44 provided with an ozone water cock 43 at its tip extends, and a gas-liquid separation tank 46 provided with an exhaust ozone gas air vent 45 is interposed in the path.

Next, a more specific function of the entire ozone supply device will be described, centering on the ozone generator according to the present invention. Air is sucked and compressed by the compressor 4, and the air sent to the aftercooler 5 arranged as necessary is subjected to preliminary dehumidification and cooling work by a water circulation system, and then the aftercooler 5 is used to form a dew condensation tank. It is sent to 6. Air is temporarily stored and condensed in the tank 6, and the trapped water is discharged through the opened solenoid valve SV9 (see FIG. 3).

The dehumidified air is operated by the sequencer 19 so that the solenoid valve SV1 is opened and flows through the adsorbent 9 in the first adsorption tank 7 as shown by the dotted arrow in FIG. The nitrogen gas and the moisture therein are adsorbed and captured by the adsorbent. On the other hand, a small part of the extracted oxygen gas passes through the shuttle valve 12 and enters the oxygen gas tank 18. Most of the remaining oxygen gas passes through the purge speed controller 11, enters the second adsorption tank 8, and reverses the nitrogen gas and water captured by the adsorbent in the second adsorption tank 8. After being discharged, the adsorbent 9 in the tank 8 is regenerated and activated.

Exhaust gas containing nitrogen and moisture from the second adsorption tank 8 is exhausted to the outside of the oxygen extraction device 1 through the silencer 15 through the exhaust port provided with the exhaust fan 27 by opening the solenoid valve SV4.

After the exhaust work from the second adsorption tank 8 is completed, the solenoid valve SV2 on the second adsorption tank 8 side is opened this time.
In the second adsorption tank 8, the same oxygen gas extraction work as described above is performed, and in the first adsorption tank 7, the regeneration and activation work of the adsorbent 9 is performed. The extraction of oxygen gas, the feeding of the same gas to the oxygen gas tank 18, the regeneration work of the adsorbent with a partial oxygen gas and the subsequent exhaust work are all automatically performed by the operation of each solenoid valve SV operated by the sequencer 19. Is executed.

A part of the oxygen gas separated and extracted by the adsorbent flows into the oxygen gas tank 18, and the humidity sensor 17 installed in the tank 18 detects the humidity in the oxygen gas and adsorbs it. The humidity value in oxygen gas, which tends to increase with the fatigue deterioration of the agent, is constantly monitored.

As the adsorbent 9 in both adsorption tanks 7 and 8 deteriorates, the oxygen production rate of the atmosphere pressurized by the compressor 4 decreases, and conversely nitrogen gas and water (humidity).
The oxygen gas, which tends to increase the content rate thereof, is fed into the oxygen gas tank 18. When the moisture (humidity) in the oxygen gas tank 18 reaches the set value of the humidity sensor 17, the sensor power supply unit 16 senses the set value and sends a signal to the sequencer 19, which causes the sequencer 19 to generate the compressor 4 and ozone. Signals are sent to drive sources such as the machine 30 and the solenoid valve 43 for water, and these drive sources are automatically stopped. At the same time, a signal is also issued to the alarm lamp 14 from the sequencer 19 to turn on the lamp and externally display the replacement timing of the adsorbent 9 in both the adsorption tanks 7 and 8.

The oxygen gas having a high purity, which flows out from the oxygen gas tank 18, is constantly metered by the flow meter 23, and the flow rate is suppressed so that, for example, the oxygen amount of 2 liters per second flows through the oxygen gas. It is sent into the ozone generator 30.

During this flow-down process, the deterioration of the adsorbent 9 in equilibrium with the decrease in the gas concentration of the oxygen gas progresses with the passage of time, and the change in this oxygen gas concentration causes the oxygen concentration sensor 25 installed in the flow-down path. The sensor power source 24 senses the set value when the value reaches the set value of the oxygen concentration sensor 25, and sends a signal to the sequencer 19 to cause the sequencer 19 to drive the drive sources 4, 4. Three
Stop the drive system by outputting signals to 0 and 43,
Moreover, the alarm lamp 14 is turned on to externally display the replacement time of the adsorbent 9 in two stages.

Further, the sequencer 19 further carries out its own measurement so that the replacement time of the adsorbent 9 due to its deterioration is separately displayed. In other words, the time to operate the adsorption tanks 7 and 8 alternately is set as one set once, and how many sets are set in the operating time of one day is calculated. The endurance time of the adsorbent 9 that has been indexed, for example, the number of lots in which 10,000 hours are counted, is measured in the sequence 19, and when the measured time is reached, the humidity sensor 17 and oxygen concentration sensor Regardless of the activation of 25, the sequencer 19 outputs a stop signal to each drive source to automatically stop the drive source and display the arrival of the replacement time of the adsorbent 9 by turning on the alarm lamp 14 in multiple stages. I am busy.

The oxygen gas flowing out of the oxygen extraction device 1 reaches the ozone generator 30, and the oxygen gas is efficiently converted into high-purity ozone gas by irradiation with the silent discharge method or an ozone lamp, and the ozone generator 30 is discharged. Ozone gas flowing out of 30 is distributed by the timer 35 to the gas phase path side at night and to the liquid phase path side at daytime by operating the three-way switching solenoid valve 36 (FIG. 3).
reference).

Atmosphere is supplied from the air blower 33 to the ozone gas branched to the gas phase path side. 34, ozone air is sprayed over a wide range, and synergistic effects such as sterilization in the processing chamber, removal of offensive odors, and prevention of mold are exhibited.

On the other hand, the ozone gas branched to the liquid phase path side is an ejector 39 for mixing tap water and ozone gas.
Sent to A backflow preventing three-way switching solenoid valve 36 and a check valve 38 are provided in the path through which the ozone gas flows,
The backflow of tap water from the ejector side is prevented, and when the backflow water is generated, the trapped water is discharged to the drain pan through the pipe 37 by the electromagnetic valve 36.

During the process of supplying water from the water supply source to the ejector 39, the pressure reducing valve 38 adjusts the primary water pressure and the water amount, and the water solenoid valve 43 controls the remote control when the water pressure suddenly changes. Stop the water supply on the primary side by operating the switch valve.

The ozone gas and the tap water supplied into the ejector 39 are mixed, and the ozone water is mixed with the ozone gas and the tap water in the gas-liquid separation tank 46 in the process of flowing down to the cock 43 to increase the mixing ratio. Part of the ozone gas that is not mixed is discharged to the drain pan via the air vent 45. On the other hand, the ozone water supplied from the ozone water cock 47 is supplied to the floor surface or the like in the food processing chamber to remove slime on the floor surface, improve the drainage capacity of the grease trap, remove the foul odor of the drainage groove, etc. Along with the supply of ozone air, comprehensive hygiene control of the food processing room is realized.

[0049]

The high-purity ozone gas generated by the ozone generator is a high-purity oxygen gas with a low content of water and nitrogen, which is constantly and evenly supplied to the ozone generator over a long period of time. To be realized.

Before the oxygen gas of high purity, that is, the oxygen gas in which the content of water and nitrogen, which causes the generation of knox and nitric acid generated thereafter, is suppressed is sent to the ozone generator, the oxygen gas is efficiently removed from the atmosphere. The work of extracting with priority is realized by highly accurate separation of oxygen gas and water or nitrogen gas, but in the present invention, the deterioration of the adsorbent in the oxygen extraction device, which greatly affects the separation work, is reduced by oxygen. The humidity sensor installed in the gas tank detects the humidity change in the tank and immediately connects it to the operation stop of the drive source such as the air compressor which is the atmospheric supply source.
By stopping the supply of oxygen gas containing a large amount of impurities such as water and nitrogen gas to the ozone generator,
It is possible to prevent the generation of NOX and the subsequent generation of nitric acid that adversely affect the human body and the other surface, and it is possible to reliably produce high-purity ozone gas.

Further, in the present invention, an oxygen concentration sensor for detecting a change in the generated oxygen concentration is installed in the oxygen gas path just before the introduction of the oxygen gas into the ozone generator, and the oxygen concentration sensor has a predetermined concentration value or less. Changes to the above, and the deterioration of oxygen gas that affects the production of high-purity ozone gas is grasped in multiple stages in the next stage, and this detection is immediately linked to the operation stop of the air compressor etc. By collaborating with the sensor, it is possible to realize highly accurate production of high-purity oxygen gas.

Furthermore, in comparison with the endurance time of the adsorbent calculated empirically, the number of times of operation of the adsorbent tanks alternately operated for oxygen gas extraction was measured by a separate sequencer, and the adsorbent When a predetermined measurement time (number of times) that substantially matches the endurance time is reached, the sequencer outputs a signal and the drive source such as the compressor is automatically stopped, so that the adsorbent replacement timing can be changed. Independently of the activation of the sensor, the replacement time of the adsorbent can be grasped globally, and the accuracy of the oxygen gas can be more surely improved by maintaining the adsorbent in multiple stages.

Further, by externally recognizing the arrival of the adsorbent replacement time due to the deterioration of the adsorbent in the adsorption tank in the oxygen extraction device in several stages, the knox with a high degree of danger and the subsequent occurrence of the nox occur. Generation of nitric acid can be prevented in advance.

In addition, the operation of separating the oxygen gas and the water by making the suction atmosphere, using two adsorbent tanks, that is, two adsorbents, the adsorption of the water etc. by the adsorbent on one side, At the same time, by alternately performing the work of discharging the water adsorbed and captured by the adsorbent from the adsorbent on the other side, the separation work of the oxygen gas is continuously and efficiently performed, and the durability of the adsorbent is improved. It can be maintained for a long time.

Further, by adopting a step of preliminarily removing and eliminating water in the atmosphere before the introduced air is injected into the adsorbent in the adsorption tank, the work of adsorbing water on the adsorbent is burdened. Is reduced by that amount, the durability of the adsorbent is enhanced, and the adsorption effect can be maintained for a long time.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an ozone generator including an oxygen extractor according to the present invention.

FIG. 2 is a configuration diagram showing a stop mechanism of each drive source using a humidity and oxygen concentration sensor as a starting means.

FIG. 3 is a flowchart of the ozone generator shown in FIG.

FIG. 4 is a flow chart for each supply port of ozone air and ozone water following the ozone generator shown in FIG.

[Explanation of symbols]

 1 Oxygen Extractor 4 Compressor 7 First Adsorption Tank 8 Second Adsorption Tank 9 Adsorbent 11 Purge Speed Controller 12 Shuttle Valve 14 Alarm Lamp 16, 24 Sensor Power Supply 17 Humidity Sensor 18 Oxygen Gas Tank 19 Sequencer 25 Oxygen Concentration Sensor 30 Ozone Generator SV Solenoid valve group

Claims (6)

[Claims] 1. An oxygen extractor comprising two adsorption tanks and an oxygen gas tank, each containing an adsorbent for adsorbing and capturing water, nitrogen gas, etc., is arranged in a path connecting a compressor and an ozone generator. An ozone generator equipped with an oxygen extractor comprising a humidity sensor as a starting means for braking a drive source such as the compressor and the ozone generator in the oxygen gas tank. 2. The oxygen extraction device according to claim 1, wherein an oxygen concentration sensor as a starting means for braking a drive source such as a compressor or an ozone generator is arranged in a path connecting the oxygen extraction device and the ozone generator. Ozone generator equipped with. 3. A sequencer that controls the operation of oxygen extraction work performed alternately in the adsorption tank containing the two adsorbents measures the number of times of operation of both adsorption tanks per unit of time, and sets the preset number of times. The oxygen extraction device according to claim 2, wherein the drive source such as a compressor or an ozone generator whose operation time of the adsorption tank has reached the endurance time of the adsorbent as compared with the endurance time of the adsorbent is braked. Ozone generator. 4. Two of the adsorption tanks containing the adsorbent are used to extract oxygen gas by adsorption separation of water, nitrogen gas, etc. in one tank, while adsorbing water and nitrogen adsorbed from the other tank. An ozone generator equipped with the oxygen extraction device according to claim 1, wherein discharge work of gas and the like is performed at the same time. 5. An ozone generator equipped with an oxygen extractor according to claim 1, wherein a water removing device is installed in a path connecting the compressor and the oxygen extractor. apparatus. 6. The ozone generator provided with the oxygen extractor according to claim 1, wherein the adsorbent is composed of synthetic zeolite.