JPH1119448A - Air quality activation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air quality activation device in which a dead space due to presence of an adsorption tank is reduced and the whole device is miniaturized and also the efficiency is enhanced. SOLUTION: This air quality activation device generate oxygen-rich air by forcibly feeding air to an adsorbent 54 enabling to adsorb and desorb nitrogen, and is provided with an outer jacket 81 having an internal hollow, an inner jacket 82 with a hollow in the inside, having a specified space in the outer jacket 81 and also provided in non-communicative state with the outer jacket 81, the adsorption tank 22 constituted of sealing the adsorbent 54 between the outer jacket 81 and the inner jacket 82, an air pump for forcibly feeding the sucked air to respective adsorption tanks, and a flow path control means for alternately switching respective adsorption tanks to an adsorption process or a desorption process by switching a flow path of the air discharged from the air pump and also making the adsorption tank on one side to the desorption process in the case that the adsorption tank on the other side is made to the adsorption process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air quality activating device for producing oxygen-enriched air by adsorbing nitrogen in air with an adsorbent.

[0002]

2. Description of the Related Art Conventionally, air purifiers for removing dust in the air and smoke particles of cigarettes have been provided in living rooms and offices of ordinary households or in rooms such as cars. A device has been developed in which oxygen in the air is concentrated to generate oxygen-enriched air to activate indoor air quality.

[0003] In this case, as a means for enriching oxygen, for example, air is circulated through a gas separation membrane, and the nitrogen in the air is prevented from passing through the membrane by this membrane. A method of increasing the oxygen concentration, or a method of enclosing an adsorbent such as zeolite in an adsorption tank, passing air into the adsorption tank and adsorbing nitrogen with the adsorbent to increase the oxygen concentration in the air exiting the adsorption tank. However, in the former case, there is a problem in the ability to activate air in a normal room, so that the latter oxygen enrichment method using an adsorbent is usually used.

[0004] Such an adsorbent adsorbs nitrogen by a pressure swing adsorption method (PSA method) that selectively captures nitrogen gas molecules in the air by utilizing a polar moment. After the nitrogen adsorption for a certain period of time, it is necessary to desorb the adsorbed nitrogen from the adsorbent.

[0005]

Therefore, the production of oxygen-enriched air is stopped during the desorption process with only a single adsorption tank. Therefore, it is conceivable to prepare two identical adsorption tanks and perform the adsorption step while performing the other adsorption / desorption step. However, there is a problem in that the ineffective space increases and the entire device becomes large in size.

Although the adsorbent causes the action of adsorbing nitrogen to generate heat, the efficiency of the adsorption process is improved at a low temperature. Conversely, the effect of the adsorbent desorbing nitrogen is that heat is absorbed, but the efficiency of the desorption process is higher at higher temperatures.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem. The present invention aims at reducing the ineffective space due to the presence of the adsorption tank, reducing the size of the entire apparatus, and improving the efficiency. It is an object of the present invention to provide an air quality activating device.

[0008]

The air quality activating device of the present invention generates oxygen-enriched air by pumping air to an adsorbent capable of adsorbing and desorbing nitrogen, and converts the oxygen-enriched air to the adsorbent. The inner cylinder is provided for supplying and desorbing nitrogen, and has an inner hollow outer cylinder, an inner hollow inner cylinder provided at a predetermined interval in the outer cylinder, and provided in a non-communication state with the outer cylinder. And, a first adsorption tank configured by enclosing an adsorbent in the inner cylinder, a second adsorption tank configured by encapsulating the adsorbent between the outer cylinder and the inner cylinder, and suctioned By switching between an air pump for pumping air to each adsorption tank and a flow path of air discharged from the air pump, each adsorption tank is alternately switched between an adsorption step and a desorption step, and one of the adsorption tanks is switched. When the adsorption step is used, the other adsorption tank is used as the desorption step. It is one that has a stage.

According to the present invention, first and second adsorption tanks each containing an adsorbent are provided, and the air sucked by the air pump is sent to each adsorption tank by pressure, and the flow control means controls the air pump from the air pump. By switching the flow path of the discharged air, each adsorption tank is alternately switched between an adsorption step and a desorption step, and when one adsorption tank is set to the adsorption step, the other adsorption tank is set to the desorption step. Therefore, adsorption and desorption are alternately and simultaneously performed in each adsorption tank, and it is possible to realize continuous generation of oxygen-enriched air.

[0010] In particular, an inner hollow inner cylinder is provided at an interval in an inner hollow outer cylinder, and an adsorbent is sealed in the inner cylinder to constitute a first adsorption tank. Since the second adsorption tank is configured by sealing the adsorbent between the inner cylinders, the ineffective space can be reduced as compared with a case where two separate cylinders are arranged side by side, and the entire apparatus is Can be reduced in size.

Further, since the adsorbent in the inner cylinder and the adsorbent outside the inner cylinder can exchange heat in substantially the entire area of the inner cylinder, heat generated from the adsorption tank in the adsorption process is reduced by the desorption process. Is smoothly transmitted to the adsorption tank. This allows
This makes it possible to improve both the adsorption efficiency of the adsorbent in the adsorption step and the desorption efficiency of the adsorbent in the desorption step.

According to a second aspect of the present invention, there is provided the air quality activating device, wherein a plurality of heat exchange fins are formed on the outer surface of the inner cylinder.

According to the second aspect of the present invention, since a plurality of heat exchange fins are formed on the outer surface of the inner cylinder in addition to the above, the heat exchange area of the adsorbent inside and outside the inner cylinder is expanded, and heat transfer is achieved. It will be further activated and the efficiency can be further improved.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of an air quality activating device 1 of the present invention, and FIG. 2 is an oxygen-enriched air generating unit 1 of the air quality activating device 1.
2, FIG. 3 is a block diagram of an electric circuit of the air quality activation device 1, FIG. 4 is a perspective view of the adsorption device 20 of the air quality activation device 1, and FIG. ing.

The air quality activating device 1 of the present invention is installed, for example, in a living room of a general household, and is constructed by incorporating each device in a main body case 2 having a size that can be easily carried. A slit-shaped air suction port 3 is formed on the front surface of the main body case 2, and an air cleaning filter 4 made of a HEPA filter is mounted inside the air suction port 3. A dust sensor 6 is provided outside the air cleaning filter 4, and a blower 7 is mounted further inside the air cleaning filter 4.

The blower 7 sucks air from the air suction port 3 and removes dust and smoke particles by the air cleaning filter 4. Then, the air blower 7 is formed on the front surface of the main body case 2 above the air suction port 3. It blows out from the exit 8.

Further, an electrical component box 9 is provided at the upper rear side in the main body case 2, and a negative ion generator 11 is provided at the front side thereof. The negative ion generator 11 adds negative ions to the air discharged from the blower 7 and blown out from the air outlet 8.

The main body case 2 further contains an oxygen-enriched air generating section 12 according to the present invention. The oxygen-enriched air generator 12 includes an air pump 13, a suction tank 14, a cooling coil 16, five-way valves 17, 18, an adsorption device 20 in which adsorption tanks 21 and 22 are integrally formed, buffer tanks 23, 24, It comprises check valves 26, 27, 28, silencers 31, 32, blower 33, mask 34 and the like.

The suction tank 14 is an air pump 1
3 is connected to the suction side, and the silencer 3
1 is connected to the inlet of the suction tank 14 and disposed inside the air purification filter 4. The cooling coil 16 is connected to the discharge side of the air pump 13 and the outlet of the cooling coil 16 is connected to the first port 1 of the five-way valve 17.
The pipe is connected to 7A.

The second port 17B of the five-way valve 17 is connected to the air inlet 21A at the lower end of the adsorption tank 21 by a pipe 36, and the third port 17C is connected to the air inlet 22A at the lower end of the adsorption tank 22 by a pipe 37. It is connected. The fourth port 17D and the fifth port 17E of the five-way valve 17 are both connected to the second port 18B of the five-way valve 18 by a three-way pipe 38.

The five-way valve 17 is driven by an electromagnetic coil, and in the ON state, as shown by a solid line in FIG.
7A is communicated with the second port 17B, and the fifth port 17E is communicated with the third port 17C. Also, OFF
In the state, the first port 17A is connected to the third port as shown by the broken line in FIG.
The flow path is switched so as to communicate with the port 17C and communicate the second port 17B with the fourth port 17D.

The third port 18C of the five-way valve 18 is connected via a pipe 39 to the oxygen-enriched air outlet 2 at the upper end of the adsorption tank 22.
It communicates with a pipe 41 connected to 2B. Further, the fifth port 18E of the five-way valve 18 is connected through a pipe 42 to a pipe 43 connected to the oxygen-enriched air outlet 21B at the upper end of the adsorption tank 21.

The five-way valve 18 is driven by an electromagnetic coil, and in the ON state, as shown by a solid line in FIG.
Is connected to the fifth port 18E, and in the OFF state, the third port 18C is switched to the first port 18A as shown by a broken line. The first port 18A is sealed, and the second port 18B and the fourth port 18D are always in communication. A pipe 40 is connected to the fourth port 18D, and the pipe 40 is connected to the silencer 32 via the buffer tank 24 and the check valve 28 in this order. The check valve 28 has the silencer 32 direction as the forward direction.

The pipe 43 is connected to the pipe 44 via the dust / bacteria filter 62 and the check valve 26, and the pipe 41 is connected to the pipe 44 via the dust / bacteria filter 61 and the check valve 27. ing. The check valves 26 and 27 are directed forward in the direction of the pipe 44, and the pipes 41 and 43 are located in front of the filters 61 and 62, respectively.
That is, on the upstream side of each check valve 26, 27, the communication pipe 46
Are communicated with each other. An orifice 47 is provided in the communication pipe 46. Piping 41 or 4
Air flowing toward the pipe 44 in the inside 3 is diverted to the communication pipe 46 by a fifth due to the resistance of the orifice 47.

The pipe 44 is connected to the buffer tank 23.
The outlet of the buffer tank 23 is connected to a flexible hose 49 via a needle valve 48. The mask 3 is attached to the end of the hose 49.
The hose 49 and the mask 34 are stored in a storage section 51 on the upper surface of the main body case 34 so as to be freely delivered. Reference numeral 52 denotes a lid that closes the storage unit 51 so that it can be opened and closed.

Here, the suction device 20 is stored in the outer cylinder 81 at a predetermined interval with a hard resin outer cylinder 81 having an inner hollow body whose upper and lower faces are closed. And a metal inner cylinder 82 having a hollow inside. The air inlet 21A protrudes downward from the center of the lower surface of the inner cylinder 82, and extends downward through the lower surface of the outer cylinder 81. The oxygen-enriched air outlet 21B protrudes upward from the center of the upper surface of the inner cylinder 82, and is drawn upward through the upper surface of the outer cylinder 81.

Further, the air inlet 22A protrudes downward from the lower surface (position shifted from the center) of the outer cylinder 81,
The oxygen-enriched air outlet 22B protrudes upward from the upper surface (off-center position) of the outer cylinder 81. Thus, the space inside the inner cylinder 82 and the space between the inner and outer cylinders 82 and 81 are not communicated. A plurality of metal heat exchange fins 83 are attached to the outer surface of the inner cylinder 82 so as to protrude therefrom, and the tip ends thereof are sufficiently spaced from the inner surface of the outer cylinder 81.

The lower portion of the inner cylinder 82 has a hygroscopic agent 5
3 (350 g) is enclosed, and the adsorbent 54
(1 kg). A hygroscopic agent 53 (350 g) is also sealed in the lower part of the space between the inner cylinder 82 and the outer cylinder 81,
An adsorbent 54 (1 kg) is also sealed on the upper side.
Thereby, the adsorption tank 21 is formed in the inner cylinder 82,
The adsorption tank 22 is formed between the inner cylinder 82 and the outer cylinder 81.

The desiccant 53 in each of the adsorption tanks 21 and 22
Are, for example, granular alumina having a diameter of 2 mm to 3 mm, for example, and a space is formed below each of them in a predetermined range. The moisture absorbent 53 absorbs moisture in the room air flowing from the air inlet 21A or 22A as shown on the left side of FIG.

Also, the adsorbent 54 in each of the adsorption tanks 21 and 22
Is also a granular zeolite, for example, of approximately the same size, and each moisture absorbent 53 and each adsorbent 54 is separated by a permeable member. Further, a space is also formed in a predetermined range above the adsorbent 54.

Here, the zeolite constituting the adsorbent 54 is supplied to the air inlet 21A or 22A as shown on the left side of FIG.
Indoor air at 1.2 to 1.5 kg / square centimeter gauge pressure from A (moisture absorbent 53 removes moisture)
Is pressure-fed, nitrogen molecules, carbon monoxide molecules and carbon dioxide molecules in the room air are selectively adsorbed using the polar moment (pressure swing adsorption method (PSA)).
Law)). Hereinafter, this is referred to as an adsorption process. This allows
Oxygen-enriched air having an oxygen concentration of 35% to 40% comes out from the oxygen-enriched air outlet 21B or 22B at the upper end.

When the oxygen-enriched air flows into the adsorption tank 21 or 22 from the oxygen-enriched air outlet 21B or 22B at a gauge pressure of 0 kg / cm 2 as shown on the right side of FIG. The pressure rises sharply. In this state, the adsorbent 54 releases the nitrogen molecules, carbon monoxide molecules, and carbon dioxide molecules adsorbed in the adsorption process. Hereinafter, this is referred to as a desorption process. Thereby, nitrogen is supplied from the lower air inlet 21A or 22A.
The air enriched with carbon monoxide and carbon dioxide flows out. At this time, moisture is also released from the moisture absorbent 53.

Next, in FIG. 3, reference numeral 56 denotes a control device constituted by a general-purpose microcomputer, which is housed in the electrical box 9. The operation switch 57 and the output of the dust sensor 6 are input to the control device 56. The output of the control device 56 includes the air pump 1
3M, motors 7M and 33M of the blowers 7 and 33, a negative ion generator 11, five-way valves 17, 18
Are connected respectively.

Next, the operation of the oxygen-enriched air generator 12 of the air quality activating device 1 of the present invention will be described with reference to the timing chart of FIG. When the operation switch 57 is operated, the control device 56 starts the operation of the air quality activation device 1. The control device 56 drives the motor 13M of the air pump 13 and also drives the motors 7M and 33M of the blowers 7 and 33. The five-way valve 17 is turned on, and the five-way valve 18 is turned on for one second and then turned off.

When the air pump 13 is operated, the room air that has passed through the air cleaning filter 4 is sucked from the silencer 31 through the suction tank 14 to the air pump 13. In addition, the suction amount is made uniform by the suction tank 14. Then, the sucked room air is discharged from the air pump 13 to the cooling coil 16. The air is blown from the blower 33 to the cooling coil 16, and the room air flowing into the cooling coil 16 is cooled while passing through the cooling coil 16 and then enters the first port 17 </ b> A of the five-way valve 17.

The room air that has entered the first port 17A of the five-way valve 17 flows out of the second port 17B and is fed into the adsorption tank 21 through the pipe 36 from the air inlet 21A at the lower end of the adsorption tank 21. The pressure in the adsorption tank 21 at this time is the above-described gauge pressure of 1.2 to 1.5 kg / cm 2. The indoor air that has entered the adsorption tank 21 is subjected to moisture removal by the moisture absorbent 53 as described above, and then nitrogen, carbon monoxide, and carbon dioxide are adsorbed by the adsorbent 54 to become oxygen-enriched air and become the upper end. From the oxygen-enriched air outlet 21B (adsorption process).

At this time (after a lapse of one second from the start of operation), the oxygen-enriched air discharged from the adsorption tank 21 is supplied to the third port 18C of the five-way valve 18 with the first port 18A. 26 and the direction of the communication pipe 46, 4/5 of which goes to the check valve 26 and 1/5 is diverted to the communication pipe 46 as described above. The oxygen-enriched air flowing to the check valve 26 flows out of the mask 34 via the pipe 44, the buffer tank 23, the needle valve 48, and the hose 49. The user can suck the oxygen-enriched air by putting the mask 34 on the mouth.

The discharge amount from the mask 34 is equalized by the buffer tank 23 and the needle valve 48.

On the other hand, the 1/5 oxygen-enriched air that has flowed into the communication pipe 46 is throttled by the orifice 47, and then flows into the adsorption tank 22 from the outlet 22B via the pipe 41. Adsorption tank 2
When the oxygen-enriched air flows into the fuel cell 2, the internal oxygen partial pressure increases as described above, so that the adsorbent 54 releases the adsorbed nitrogen, carbon monoxide, and carbon dioxide as described above (desorption step). . The internal pressure at this time is 0 kg / cm 2.

Then, the pipe 3 is connected through the air inlet 22A at the lower end.
7, the third port 17C of the five-way valve 17, the fifth port 17E, the piping 38, the second port 18B of the five-way valve 18,
The gas is discharged from the silencer 32 through the fourth port 18D, the pipe 40, the buffer tank 24, and the check valve 28.

In this case, the adsorbent 54 in the adsorption tank 21 in the adsorption process generates heat, and this heat is transmitted through the inner cylinder 82 and the heat exchange fins 83.
Is transmitted to and absorbed by the adsorbent 54 in the inside.

When 20 seconds have elapsed since the start of operation, the control device 51 turns off the five-way valve 17 and simultaneously turns on the five-way valve 18 for one second. When the five-way valve 18 is turned on, the third port 18C and the fifth port 18E communicate with each other, so that the adsorption tank 21 that has been the adsorption step and the adsorption tank 22 that has been the desorption step have Piping 42, 3
9.

Accordingly, the pressure in the adsorption tank 21 and the pressure in the adsorption tank 22 are made uniform within one second, so that the subsequent adsorption tank 22
The internal pressure and the pressure in the adsorption tank 21 can be smoothly increased, and the noise generated in each of the adsorption tanks 21 and 22 when the pressure in the adsorption step is rapidly reduced to the pressure in the desorption step can be reduced. Also, the five-way valve 17 is turned off, and the first
Since the port 17A communicates with the third port 17C, the room air that has flowed out of the cooling coil is pumped into the adsorption tank 22 through the pipe 37 from the air inlet 22A at the lower end.

Then, as described above, oxygen-enriched air is generated in the adsorption tank 22 (adsorption process), flows out from the outlet 22B at the upper end to the pipe 41, and flows toward the check valve 27 and the communication pipe 46. 4/5 goes to check valve 27
/ 5 is diverted to the communication pipe 46. The oxygen-enriched air directed to the check valve 27 similarly flows out of the mask 34 through the pipe 44, the buffer tank 23, the needle valve 48, and the hose 49.

The 1/5 oxygen-enriched air flowing into the communication pipe 46 is throttled by the orifice 47, and then flows into the adsorption tank 21 from the outlet 21B via the pipe 43. Adsorption tank 2
As described above, nitrogen, carbon monoxide, and carbon dioxide adsorbed by the adsorbent 54 are released in 1 (desorption process).

Then, the pipe 3 is connected through the air inlet 21A at the lower end.
6, the second port 17B of the five-way valve 17, the fourth port 17D, the piping 38, the second port 18B of the five-way valve 18,
The gas is discharged from the silencer 32 through the fourth port 18D, the pipe 40, the buffer tank 24, and the check valve 28 in the same manner as described above.

When the five-way valve 17 is switched, the pressure in the adsorption tank during the adsorption process is applied not only to the adsorption tank during the desorption process but also to the pipe 40.
Since the pressure rise is alleviated by the presence of 4, the generation of noise in the path from the pipe 40 to the silencer 32 is also suppressed.

In this case, the adsorbent 54 in the adsorption tank 22 in the adsorption process also generates heat, and this heat also travels through the inner cylinder 82 and the heat exchange fins 83.
Is transmitted to and absorbed by the adsorbent 54 in the inside.

Thereafter, the control device 56 repeats this. That is, after 20 seconds, the five-way valve 17 is turned on again, and the five-way valve 18 is turned on for only one second.

As described above, according to the present invention, the adsorption tank 21 and the adsorption tank 22 each containing the adsorbent 54 are provided, and the air sucked by the air pump 13 is sent to the adsorption tanks 21 and 22 by pressure, and the five-way valve is provided. By switching the flow path of the air discharged from the air pump 13 at 17 and 18, each of the adsorption tanks 21 and 22 is alternately switched between the adsorption step and the desorption step, and when the adsorption tank 21 is in the adsorption step, the adsorption is performed. Since the tank 22 is configured as a desorption step, and the adsorption tank 22 is configured as an adsorption step when the adsorption tank 21 is in a desorption step,
In each of the adsorption tanks 21 and 22, adsorption and desorption are alternately and simultaneously performed, so that continuous generation of oxygen-enriched air can be realized.

In particular, an inner hollow inner cylinder 82 is provided at an interval in an inner hollow outer cylinder 81, and the adsorbent 54 is sealed in the inner cylinder 82 to constitute the adsorption tank 21. Since the adsorption tank 22 is formed by enclosing the adsorbent 54 between the cylinder 81 and the inner cylinder 82, the ineffective space can be reduced as compared with the case where two separate cylinders are arranged side by side. Thus, the entire air quality activating device 1 can be reduced in size.

Further, since the adsorbent 54 inside the inner cylinder 82 and the adsorbent 54 outside the inner cylinder 82 can exchange heat over the entire area of the inner cylinder 82, the heat generated from the adsorption tank in the adsorption process is generated. Is smoothly transmitted to the adsorption tank in the desorption process. Thereby, both the adsorption efficiency of the adsorbent in the adsorption step and the desorption efficiency of the adsorbent in the desorption step can be improved.

Since a plurality of heat exchange fins 83 are formed on the outer surface of the inner cylinder 82, the heat exchange area of the adsorbent 54 inside and outside the inner cylinder 82 is expanded, and heat transfer is further activated. The efficiency can be further improved.

In the embodiment, the adsorption tanks 21 and 22 are constituted by the outer cylinder 81 and the inner cylinder 82. However, three or more adsorption tanks are constituted by combining a plurality of cylinders in a multiplexed manner. A desorption process may be performed. In the embodiment, the inner cylinder 82 is made of metal and the outer cylinder 81 is made of resin. However, both may be made of metal.

[0055]

According to the present invention, as described in detail above, first and second adsorption tanks each containing an adsorbent are provided,
By pumping the air sucked by the air pump to each adsorption tank and switching the flow path of the air discharged from the air pump by the flow path control means, each adsorption tank is alternately switched between the adsorption step and the desorption step, In addition, when one of the adsorption tanks is in the adsorption step, the other adsorption tank is configured to be in the desorption step, so that adsorption and desorption are performed alternately and simultaneously in each of the adsorption tanks, and a continuous oxygen-enriched air is obtained. Can be realized.

In particular, an inner hollow inner cylinder is provided at an interval inside an inner hollow outer cylinder, and an adsorbent is sealed in the inner cylinder to constitute a first adsorption tank. Since the second adsorption tank is configured by sealing the adsorbent between the inner cylinders, the ineffective space can be reduced as compared with a case where two separate cylinders are arranged side by side, and the entire apparatus is Can be reduced in size.

Further, since the adsorbent in the inner cylinder and the adsorbent outside the inner cylinder can exchange heat in substantially the entire area of the inner cylinder, heat generated from the adsorption tank in the adsorption process is reduced by the desorption process. Is smoothly transmitted to the adsorption tank. This allows
This makes it possible to improve both the adsorption efficiency of the adsorbent in the adsorption step and the desorption efficiency of the adsorbent in the desorption step.

According to the second aspect of the present invention, since a plurality of heat exchange fins are formed on the outer surface of the inner cylinder in addition to the above, the heat exchange area of the adsorbent inside and outside the inner cylinder is expanded, and heat transfer is improved. It will be further activated and the efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an air quality activating device of the present invention.

FIG. 2 is a piping configuration diagram of an oxygen-enriched air generation unit of the air quality activation device of the present invention.

FIG. 3 is a block diagram of an electric circuit of the air quality activating device of the present invention.

FIG. 4 is a perspective view of the adsorption device of the air quality activation device of the present invention.

FIG. 5 is a vertical sectional side view of the suction device of FIG. 4;

FIG. 6 is a diagram for explaining the adsorption and desorption actions of nitrogen molecules in an adsorption tank.

FIG. 7 is a timing chart for explaining the operation of the five-way valve of the air quality activation device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air quality activation device 13 Air pump 17, 18 Five-way valve 20 Adsorption device 21, 22 Adsorption tank 26, 27 Check valve 34 Mask 54 Adsorbent 56 Control device 81 Outer cylinder 82 Inner cylinder 83 Heat exchange fin

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Nakayama 2-5-1-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. An air quality activation device for generating oxygen-enriched air by pumping air to an adsorbent capable of adsorbing and desorbing nitrogen and supplying the oxygen-enriched air to the adsorbent to desorb nitrogen. In the above, an inner hollow outer cylinder, an inner hollow inner cylinder provided at a predetermined interval in the outer cylinder, and provided in a non-communication state with the outer cylinder, and the adsorbent is sealed in the inner cylinder. A first adsorption tank constituted by performing the above-mentioned operations, a second adsorption tank constituted by enclosing the adsorbent between the outer cylinder and the inner cylinder, and pumping the sucked air to each of the adsorption tanks. An air pump for switching the flow path of the air discharged from the air pump to alternately switch each of the adsorption tanks to an adsorption step and a desorption step, and to set one of the adsorption tanks to an adsorption step. Flow control means for setting the other adsorption tank to a desorption process. An air quality activation device, comprising: 2. The air quality activating device according to claim 1, wherein a plurality of heat exchange fins are formed on an outer surface of the inner cylinder.