JP2001178811A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner capable of reducing the replacement frequency of a deodorizing filter or eliminating the necessity for the replacement of the deodorizing filter, by efficiently decomposing an odor component absorbed by the deodorizing filter. SOLUTION: The air cleaner is provided with a filter section 6 having a dust collecting filter 7 and a blower means for blowing air to the filter section 6. A sheet-shape member (c) having ventilating ports provided with a catalyst and an absorbent is arranged in the upstream side of an airflow generated by the blower means in the filter section 6. An electric discharging means is provided, which consists of an upstream conductive electrode (a) arranged in the upstream side of the sheet-shape member (c) and (a) a downstream conductive electrode (b) arranged in the downstream side of the sheet-shape member (c).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier for purifying air by removing dust and odor contained in indoor air.

[0002]

2. Description of the Related Art Conventionally, there has been provided an indoor air purifier provided with means for deodorizing by adsorbing an odor component contained in air by an adsorbent. In such an indoor air purifier, a pre-filter, a discharge electrode and a counter electrode, a dust collecting filter, and a deodorizing filter are sequentially arranged along a blowing direction, and a dust charging unit is configured by the discharge electrode and the counter electrode. . In such an indoor air purifier, after removing large dust with a pre-filter, a small dust in the air passing through the dust charging unit is charged by performing corona discharge between the discharge electrode and the counter electrode. After collecting the charged dust with a dust collection filter, deodorization is performed with an adsorbent incorporated in the deodorization filter.

However, when the amount of adsorbent such as activated carbon is saturated, no further adsorption takes place and the deodorizing function is lost, so that if the amount of adsorbing odorous components in the deodorizing filter increases, the life of the deodorizing filter is exhausted. Had to be replaced frequently. In order to reduce the frequency of replacement of the deodorizing filter, it is conceivable to increase the amount of the adsorbent used. However, in that case, there is a problem that the size of the apparatus is increased and the cost of the deodorizing filter is increased.

Therefore, a catalyst is arranged upstream of the deodorizing filter and a catalyst exciting means for activating the catalyst is provided to decompose the odor component adsorbed on the deodorizing filter. In the case where a pair of discharge electrodes is provided as the excitation means, conventionally, nothing is disposed between the discharge electrodes, and a sheet-shaped member having a vent hole is disposed downstream of the discharge electrodes, and the sheet-shaped member is disposed. A catalyst was placed on the member. Then, active species such as oxygen radicals, ions, and electrons generated by the discharge between the discharge electrodes reach the catalyst of the sheet-shaped member to activate the catalyst.

[0005]

However, in the prior art described above, since the sheet-like member is disposed downstream of the pair of discharge electrodes, active species generated by the discharge are applied to the catalyst of the sheet-like member. The distance to reach is longer,
In addition, oxygen radicals and the like are easily taken into the downstream electrode of the pair of discharge electrodes, so that the probability that active species reach the catalyst is low. Therefore, the decomposition of the odor component cannot catch up with the adsorption of the odor component in the deodorizing filter, and the frequency of replacement of the deodorizing filter cannot be sufficiently reduced.

The present invention has been made in view of the above points, and it is possible to efficiently decompose odor components adsorbed on a deodorizing filter to reduce the frequency of replacement of the deodorizing filter. It is an object of the present invention to provide an air purifier that does not require replacement of a deodorizing filter.

[0007]

According to a first aspect of the present invention, there is provided an air purifier including a blower, a sheet-like member c having a ventilation hole in which a catalyst and an adsorbent are arranged, and a discharger. In the air purifier, the sheet-like member c is disposed so that the sheet-like member c is arranged in an airflow generated by the blowing means, and the discharging means is provided upstream of the sheet-like member c in the airflow. And an upstream conductive electrode a disposed downstream of the sheet-like member c in the airflow.

According to a second aspect of the present invention, in addition to the first aspect, the sheet-like member c is formed of a nonwoven fabric.

The invention of claim 3 is characterized in that, in addition to the constitution of claim 1 or 2, the sheet-like member c is formed of fibrous activated carbon.

According to a fourth aspect of the present invention, in addition to the configuration of the first aspect, the upstream conductive electrode a is disposed in contact with the upstream surface of the sheet-like member c, and the downstream conductive electrode b is provided. It is characterized by being arranged in contact with the downstream surface of the sheet-like member c.

According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, the upstream conductive electrode a and the downstream conductive electrode b are formed of a conductive paint. Things.

According to a sixth aspect of the present invention, there is provided an air purifier, comprising: a blowing member; a sheet-like member c having a ventilation hole in which a catalyst, an adsorbent, and a conductive material are disposed; An air purifier comprising: a sheet-like member c disposed in an airflow generated by air blowing means; and an upstream side of the airflow from the sheet-like member c. And an upstream conductive electrode (a) is disposed on the upper surface.

According to a seventh aspect of the present invention, in addition to the configuration of the sixth aspect, the sheet-like member c is formed of a nonwoven fabric.

According to an eighth aspect of the present invention, in addition to the configuration of the sixth or seventh aspect, the sheet-like member c is formed of a nonwoven fabric in which some or all of the fibers are made of conductive fibers. It is characterized by the following.

According to a ninth aspect of the present invention, in addition to the configuration of the sixth aspect, the sheet-like member c is formed of fibrous activated carbon.

According to a tenth aspect of the present invention, in addition to the configuration of the sixth aspect, the upstream conductive electrode a is disposed in contact with the upstream surface of the sheet-like member c, and the conductive material d is formed in a sheet-like shape. It is characterized by being arranged in contact with the downstream surface of the member c.

According to an eleventh aspect of the present invention, in addition to the configuration of the tenth aspect, the upstream conductive electrode a and the conductive material d are
It is characterized by being formed by a conductive paint.

[0018]

Embodiments of the present invention will be described below.

The air purifier 1 shown in FIGS. 1 and 2 is provided with a housing recess 24 that opens to the front side in the main body case 11 that constitutes the exterior, and the housing recess 24 has a front opening. The front cover 12 is detachably attached so as to cover the opening. In most of the area of the front cover 12, an air inflow portion 13 that connects the outside of the air purifier 1 and the inside of the accommodation recess 24 of the air purifier 1 is formed. The air inflow portion 13 is formed such that most of the front cover 12 is formed in a mesh shape, a large number of small holes are formed in the front cover 12, or a plurality of louver pieces are provided in the front cover 12 and between the louver pieces. It is provided by forming a suction port.

In the housing recess 24, the discharge block mounting portions 25, 25
The filter mounting part 26 and the fan storage part 15 are formed.

A fan 17 is provided in the fan housing 15. The fan housing section 15 and the filter mounting section 26 are separated by a partition wall 27.
A plurality of through holes 22 are formed to communicate the fan housing 15 and the filter mounting part 26. An air outlet 23 for communicating the outside of the main body case 11 and the fan housing part 15 is formed on the upper surface of the rear part of the main body case 11, and the air outlet 23 is provided between the upper surface of the rear part of the main body case 11 and the fan. It is open at the upper bottom surface of the storage section 15. When the fan 17 is operated, as shown by an arrow in the figure, the front cover 12
Air is sucked from the air inflow portion 13 into the housing recess 24, and the air is sequentially purified by passing through the pre-filter 18, the discharge block 2, and the filter portion 6, and then passes through the through hole 22 to be purified. , And further discharged to the outside through the air outlet 23. Hereinafter, the term “upstream side” simply means the upstream side of the airflow generated by the fan 17 as the blowing means, and the term “downstream side” means the downstream side of the airflow generated by the fan 17 as the blowing means. It shall be.

The discharge block 2 serves as dust charging means for charging dust in the air, and includes oxygen radicals, ions,
It is provided as active species generating means for generating active species such as electrons, and as deodorizing means for removing odor components such as formaldehyde, ammonia, acetic acid, acetaldehyde and NOx in the air. A discharge means including an upstream conductive electrode a and a downstream conductive electrode b, and a sheet-like member c are arranged on a rectangular frame-shaped electrode frame 19 that is open to the outside.

The sheet member c is a sheet member having a large number of air holes through which air can pass. A catalyst and an adsorbent are arranged on the sheet member c. Here, as the catalyst, ZnO, CuO, FeO, TiO ₂ , MnO ₂ ,
MgO ₂ , NiO, AlCl ₃ , V ₂ O ₅ , zeolite and the like can be used. Activated carbon can be used as the adsorbent.

The sheet member c is detachably attached to the electrode frame 19 so as to partition the inside of the electrode frame 19 back and forth.

The upstream conductive electrode a is disposed on the front side in the electrode frame 19 partitioned by the sheet-shaped member c, and is therefore disposed upstream of the sheet-shaped member c. FIG.
The upstream conductive electrode a is configured by disposing a discharge wire 28 made of a conductive wire at intervals between the discharge wires 28, and the upstream conductive electrode a Are detachably attached to the electrode frame 19 such that there is a space between the upstream-side conductive electrode a and the sheet-like member c by a spring elastic force of a coil spring or the like provided on the electrode frame 19.
In addition, one end or both ends of the discharge wire 28 are covered with a tube made of rubber or synthetic resin having elasticity and insulating properties to absorb vibration. The discharge wire 28 can be formed of, for example, a thin tungsten wire, a piano wire, or the like. Further, the upstream conductive electrode a may be formed of a wire netting instead of the discharge wire 28.

The downstream conductive electrode b is disposed on the back side in the electrode frame 19 partitioned by the sheet-like member c.
Therefore, it is disposed downstream of the sheet-like member c. The downstream conductive electrode b can be formed of a conductive steel plate. For example, a plurality of louver-shaped small pieces 29 made of a conductive steel sheet are arranged in parallel with an interval between adjacent small pieces 29, 29. At the same time, both ends of each small piece 29 can be fixed to the electrode frame 19 so that there is an interval between the downstream conductive electrode b and the sheet-like member c. Further, the downstream conductive electrode b may be configured by a wire mesh.

The distance between the upstream conductive electrode a and the downstream conductive electrode b is preferably in the range of 5 to 30 mm.

By arranging the upstream conductive electrode a and the downstream conductive electrode b on the upstream side and the downstream side of the sheet-like member c in this manner, the sheet-like member c is moved upward by the upstream-side conductive electrode a. And a discharge field generated between the downstream conductive electrode b.

The mounting and dismounting of the discharge block 2 thus formed from the discharge block mounting portion 25 is performed by removing the front cover 12 from the front opening of the housing recess 24.
In this state, the discharge block 2 is attached to the discharge block mounting portion 25 through the front opening of the accommodation recess 24, or is removed from the discharge block mounting portion 25 through the front opening. When the discharge block 2 is mounted on the discharge block mounting portion 25 of the main body case 11, the voltage V is applied to the upstream conductive electrode a,
This voltage V is between 4 and 15 kV, preferably about 6.5 kV
It is assumed that. On the other hand, the downstream conductive electrode b is connected to the ground side of the circuit together with the dust filter 10 of the filter unit 6.

The filter section 6 is detachably attached to the filter attaching section 26. The attachment / detachment work of the filter section 6 is performed by removing the front cover 12 from the front opening of the accommodation recess 24. In this state, the filter section 6 is attached to the filter attachment section 26 through the front opening of the accommodation recess 24, or It is removed from the mounting part 26 through the front opening. The filter unit 6 includes a deodorizing filter 7
And a dust collection filter 10. The deodorizing filter 7 removes odor components such as formaldehyde, ammonia, acetic acid, acetaldehyde, and NOx, and is mounted on the back side of the filter mounting portion 26, that is, on the downstream side. As the deodorizing filter 7, a filter filled with, for example, granular activated carbon is used. Dust collection filter 1
Reference numeral 0 denotes a filter mounted on the front side, that is, the upstream side of the filter mounting section 26, which is formed as an electric dust filter connected to the ground side of the circuit, and adsorbs dust charged in the discharge block 2. Things.

A pre-filter 18 for removing coarse dust is mounted between the filter section 6 and the front cover 12 on the further upstream side of the discharge block 2.

The discharge block mounting portion 25 is
Filter part 6 attached to the filter attachment part 26 of FIG.
And the front cover 12, and the discharge block mounting portion 25 includes the discharge block 2.
Is detachably attached.

When the air in the room is purified using the air purifier 1 configured as described above, the pre-filter 18 is sequentially placed in the storage recess 24 from the upstream side to the downstream side.
Since the discharge block 2, the filter unit 6, and the fan 17 are provided, the air that has flowed into the housing recess 24 from the air inlet 13 of the air purifier 1 has first coarse dust removed by the prefilter 18. Thereafter, the fine dust is charged by passing through the discharge block 2, and the odor component is adsorbed by the adsorbent disposed on the sheet-like member c. Next, when passing through the filter section 6, the charged fine dust is adsorbed and removed by the dust collecting filter 10, and the remaining odor component is further removed by the deodorizing filter 7 to be cleaned. The purified air is discharged from the air outlet 23 to the outside of the air purifier 1.

At this time, a discharge generated between the upstream conductive electrode a and the downstream conductive electrode b in the discharge block 2 generates active species such as oxygen radicals, ions, and electrons. Upon reaching the sheet-like member c, the catalyst arranged on the sheet-like member c is activated, and the odor component adsorbed by the adsorbent is decomposed. At this time, the upstream conductive electrode a and the downstream conductive electrode b
The active member generated between the upstream conductive electrode a and the downstream conductive electrode b is high without being adsorbed by the downstream conductive electrode b because the sheet-shaped member c is disposed between the upstream conductive electrode b and the downstream conductive electrode b. The odor component reaches the sheet-like member c with a probability, and the decomposition efficiency of the odor component becomes very high. Therefore, the life of the adsorbent can be extended, and the discharge block 2
The replacement frequency of the sheet-shaped member c can be reduced, or the replacement of the sheet-shaped member c becomes unnecessary.
Further, since the odor component can be removed for a long time by the sheet-shaped member c, the amount of adsorption of the odor component in the deodorizing filter 7 of the filter unit 6 is reduced, and the frequency of replacement of the deodorizing filter 7 of the filter unit 6 is reduced. Can also be reduced,
Alternatively, the replacement of the deodorizing filter 7 becomes unnecessary.

Here, if the sheet-like member c is formed of a non-woven fabric, the resistance when air passes through the sheet-like member c can be reduced, and the pressure loss of the air flow flowing into the air purifier 1 can be reduced. Can be reduced, and high-efficiency odor decomposition can be achieved. Further, when the sheet-like member c is formed of a fibrous material as in the case of using a nonwoven fabric, when fibrous activated carbon is applied as a part or all of the fibrous material constituting the sheet-like member c, the adsorbent has excellent adsorption performance By using the fibrous activated carbon, the odor component can be efficiently captured and effectively decomposed, and the sheet-like member c itself has a function as an adsorbent. They do not need to be placed.

Other configurations of the upstream conductive electrode a, the downstream conductive electrode b, and the sheet-like member c in the discharge block 2 include those shown in FIGS.

In the example shown in FIG. 4, the sheet-like member c is formed of an insulating material such as a nonwoven fabric made of resin fiber. As shown in FIGS. 1 to 3, the upstream conductive electrode a is connected to the discharge wire 28 made of a conductive wire.
8 and 28 are provided with a space between them, and the downstream conductive electrode b is also a discharge wire 3 made of a conductive wire in the same manner as the upstream conductive electrode a.
0 is provided by disposing a space between the discharge wires 30, 30. Further, the upstream conductive electrode a and the downstream conductive electrode b are disposed so as to be in contact with the surface of the sheet-shaped member c, and the discharge wire 28 constituting the upstream conductive electrode a and the downstream conductive electrode a The discharge line 30 forming the side conductive electrode b is arranged such that the discharge line 30 (28) forming the other is disposed between the adjacent discharge lines 28 (28, 30) forming one side. They are staggered. Upstream conductive electrode a and downstream conductive electrode b
And the space is not interposed between the sheet member c and the discharge efficiency is improved. Therefore, the probability that the active species generated by the discharge reach the sheet member c is further improved, It improves the efficiency of decomposing odorous components. Further, by arranging the upstream conductive electrode a and the downstream conductive electrode b alternately as described above, the discharge of the upstream conductive electrode a and the downstream conductive electrode b is performed on the surface of the sheet-like member c. And discharge over almost the entire surface of the sheet-like member c is possible, so that the efficiency of decomposition of the odor component is further improved.

In the example shown in FIG. 5, the same member as described above is used as the sheet-shaped member c. One that is bent and formed into a bellows shape is used. Here, a horizontal solid line in FIG. 5A indicates a mountain-folded portion 31, and a horizontal broken line indicates a valley-folded portion 32. Conductive layers 33 and 34 are formed by applying a conductive paint on the front surface and the rear surface of the sheet-shaped member c, respectively. An upstream conductive electrode a and a downstream conductive electrode b are formed on a conductive layer 34 formed on the back side, respectively. Here, as the conductive layers 33 and 34 constituting the upstream conductive electrode a and the downstream conductive electrode b, a plurality of conductive layers 33 and 34 are formed at intervals in a direction orthogonal to the fold direction of the sheet-like member c. Further, the conductive layer 33 forming the upstream conductive electrode a and the conductive layer 34 forming the downstream conductive electrode b are formed of the adjacent conductive layers 33, 33 (34, 34) forming one. The conductive layers 34 (33) constituting the other are alternately arranged between them.

As described above, when the upstream conductive electrode a and the downstream conductive electrode b are formed by applying a conductive paint on the surface of the sheet member c, the upstream conductive electrode a and the downstream conductive electrode b The conductive electrode a and the downstream conductive electrode b can be easily formed. Further, as shown in the figure, as in the case where the sheet-shaped member c is bent and formed into a corrugated shape (bellows shape), the sheet-shaped member c is bent and formed to increase the surface area and improve the deodorizing efficiency. Even if there is an upstream conductive electrode a and a downstream conductive electrode b
Can easily be formed in a shape following the shape of the sheet-like member c, and therefore, the discharge between the upstream-side conductive electrode a and the downstream-side conductive electrode b causes uniform discharge over the entire surface of the sheet-like member c. And the efficiency of decomposing odor components is improved.

In the example shown above, the discharge unit 2 having the discharge means and the sheet-like member c, the filter section 6, and the fan 17 as the blower are moved from the upstream side to the downstream side of the airflow generated by the blower. However, the arrangement order is not limited to this example. For example, the filter unit 6, the discharge unit 2, and the fan 17 are arranged in this order from the upstream side. It is a good thing. In short, the discharge unit 2 having the discharge means and the sheet-like member c is disposed in the airflow generated by the fan 17,
Further, an upstream conductive electrode a is provided on the upstream side of the sheet-like member c,
If the downstream conductive electrode b is disposed on the downstream side, the odor component adsorbed on the adsorbent of the sheet-like member c is efficiently decomposed, and the frequency of replacement of the sheet-like member c is reduced. The replacement of the member c can be made unnecessary.

FIG. 6 shows another embodiment of the present invention. The air purifier 1 is provided with a housing recess 24 that opens to the front side in the main body case 11 that constitutes the exterior, and an opening at the front of the housing recess 24 covers the opening. The front cover 12 is detachably attached. In most of the area of the front cover 12, an air inflow portion 13 that connects the outside of the air purifier 1 and the inside of the accommodation recess 24 of the air purifier 1 is formed. This front cover 12
Is to form a large portion of the front cover 12 in a net shape, to form a large number of small holes in the front cover 12,
2 is provided by providing a plurality of louver pieces and forming a suction port between each louver piece.

In the housing recess 24, a discharge block mounting portion 25, a filter mounting portion 26, and a fan housing portion 15 are formed in this order from the opening portion on the front surface to the back portion on the rear surface.

The fan 17 is provided in the fan housing 15. The fan housing section 15 and the filter mounting section 26 are separated by a partition wall 27.
A plurality of through holes 22 are formed to communicate the fan housing 15 and the filter mounting part 26. An air outlet 23 for communicating the outside of the main body case 11 and the fan housing part 15 is formed on the upper surface of the rear part of the main body case 11, and the air outlet 23 is provided between the upper surface of the rear part of the main body case 11 and the fan. It is open at the upper bottom surface of the storage section 15. When the fan 17 is operated, as shown by an arrow in the figure, the front cover 12
Air is sucked from the air inflow portion 13 into the housing recess 24, and the air passes through the pre-filter 18, the discharge block 2, and the filter portion 6, and is purified. , And further discharged to the outside through the air outlet 23. Hereinafter, the term “upstream side” simply means the upstream side of the airflow generated by the fan 17 as the blowing means, and the term “downstream side” means the downstream side of the airflow generated by the fan 17 as the blowing means. It shall be.

The discharge block 2 serves as dust charging means for charging dust in the air, and includes oxygen radicals, ions,
It is provided as active species generating means for generating active species such as electrons, and as deodorizing means for removing odor components such as formaldehyde, ammonia, acetic acid, acetaldehyde and NOx in the air. A sheet-shaped member c and an upstream conductive electrode a are arranged on a rectangular frame-shaped electrode frame 19 which is open to the outside.

The sheet-like member c has many air-permeable members.
It is a sheet-like material having the above-mentioned ventilation holes. This sheet
In the member c, a conductive material, a catalyst, and an adsorbent are arranged.
It is. Here, as the catalyst, ZnO, CuO, Fe
O, TiO_Two, MnO_Two, MgO _Two, NiO, AlCl_Three,
V_TwoO_Five, Zeolite and the like can be used. Also adsorption
Activated carbon can be used as the agent.

The sheet member c is detachably attached to the electrode frame 19 so as to partition the inside of the electrode frame 19 back and forth.

The upstream-side conductive electrode a is disposed on the front side in the electrode frame 19 partitioned by the sheet-like member c, and is therefore arranged upstream of the sheet-like member c. 6 and 7, the upstream conductive electrode a is configured by arranging discharge wires 28 made of a conductive wire at intervals between the discharge wires 28. ,
It is detachably attached to the electrode frame 19 so that there is a space between the upstream conductive electrode a and the sheet-like member c by a spring elastic force of a coil spring or the like provided at the end. In addition, one end or both ends of the discharge wire 28 are covered with a tube made of rubber or synthetic resin having elasticity and insulating properties to absorb vibration. This discharge line 28
Can be formed of, for example, a tungsten wire or a piano wire having a small wire diameter. Further, as the upstream conductive electrode a,
Instead of the discharge wire 28, a wire net may be used.

The upstream conductive electrode a and the sheet-like member c
Is preferably in the range of 0.5 to 30 mm.

The mounting and dismounting of the discharge block 2 thus formed from the discharge block mounting portion 25 is performed by removing the front cover 12 from the front opening of the housing recess 24.
In this state, the discharge block 2 is attached to the discharge block mounting portion 25 through the front opening of the housing recess 24, or is removed from the discharge block mounting portion 25 through the front opening. When the discharge block 2 is mounted on the discharge block mounting portion 25 of the main body case 11, the voltage V is applied to the upstream conductive electrode a,
This voltage V is between 4 and 15 kV, preferably about 6.5 kV
It is assumed that. On the other hand, the sheet-like member c is connected to the ground side of the circuit together with the dust collecting filter 10 of the filter unit 6.

The filter section 6 is detachably attached to the filter attaching section 26. The attachment / detachment work of the filter section 6 is performed by removing the front cover 12 from the front opening of the accommodation recess 24. In this state, the filter section 6 is attached to the filter attachment section 26 through the front opening of the accommodation recess 24, or It is removed from the mounting part 26 through the front opening. The filter unit 6 includes a deodorizing filter 7
And a dust collection filter 10. The deodorizing filter 7 removes odor components such as formaldehyde, ammonia, acetic acid, acetaldehyde, and NOx, and is mounted on the back side of the filter mounting portion 26, that is, on the downstream side. As the deodorizing filter 7, a filter filled with, for example, granular activated carbon is used. Dust collection filter 1
Reference numeral 0 denotes a filter mounted on the front side, that is, the upstream side of the filter mounting section 26, which is formed as an electric dust filter connected to the ground side of the circuit, and adsorbs dust charged in the discharge block 2. Things.

Further, a pre-filter 18 for removing coarse dust is mounted between the filter section 6 and the front cover 12 on the further upstream side of the discharge block 2.

When the air in the room is purified using the air purifier 1 configured as described above, the air that has flowed into the housing recess 24 from the air inlet 13 of the air purifier 1 first passes through the pre-filter 18. After the coarse dust is removed by passing through the discharge block 2, the fine dust is charged, and the odor component is adsorbed by the adsorbent disposed on the sheet member c. Next, when passing through the filter unit 6,
After the charged fine dust is adsorbed and removed by the dust collecting filter 10, the remaining odor component is further removed by the deodorizing filter 7 to be cleaned, and the purified air is Air purifier 1 from air outlet 23
It is discharged outside.

At this time, a discharge generated between the upstream conductive electrode a and the sheet-like member c in the discharge block 2 generates active species such as oxygen radicals, ions, and electrons. Upon reaching the member c, the catalyst disposed on the sheet-like member c is activated, and the odor component adsorbed by the adsorbent is decomposed. At this time, a discharge is generated between the upstream conductive electrode a and the sheet-like member c, so that the upstream conductive electrode a and the sheet-like member c are discharged.
Then, the active species generated between them reaches the sheet-shaped member c with a high probability, and the decomposition efficiency of the odor component becomes very high. Therefore, the life of the adsorbent can be extended, and the frequency of replacing the sheet-like member c of the discharge block 2 can be reduced.
It is not necessary to replace the battery. The sheet-like member c
The odor component can be removed over a long period of time, so that the amount of adsorption of the odor component in the deodorizing filter 7 of the filter unit 6 is reduced, and the frequency of replacement of the deodorizing filter 7 of the filter unit 6 can be reduced. Or, the replacement of the deodorizing filter 7 becomes unnecessary.

Here, if the sheet-like member c is formed of a nonwoven fabric, the resistance of the sheet-like member c when air passes can be reduced, and the pressure loss of the air flow flowing into the air purifier 1 can be reduced. Can be reduced, and high-efficiency odor decomposition can be achieved. Further, when the sheet-like member c is formed of a fibrous material as in the case of using a nonwoven fabric, if part or all of the fiber material constituting the sheet-like member c is formed of conductive fibers, the sheet-like member c itself becomes It has a function as a conductive material and does not need to be separately provided with a conductive material. In addition, the conductive material can be arranged uniformly over the entire surface of the sheet-shaped member c, and uniform discharge can be performed over the entire surface of the sheet-shaped member c, thereby improving the discharge efficiency. . In the case where the surface area of the sheet-like member c is improved by bending and forming the sheet-like member c, the conductive material can be arranged so as to follow it. As the conductive fiber, a conductive fiber such as a carbon fiber and a copper fiber can be used. Further, when the sheet-like member c is formed of a fibrous material, when fibrous activated carbon is applied as a part or all of the material, the odor component is efficiently captured by using fibrous activated carbon having excellent adsorption performance as an adsorbent. It can be effectively decomposed, and the sheet-like member c itself has a function as an adsorbent, so that there is no need to separately arrange an adsorbent.

Other configurations of the upstream conductive electrode a and the sheet-like member c in the discharge block 2 include those shown in FIGS.

In the example shown in FIG. 4, the sheet-like member c is formed of an insulating material such as a nonwoven fabric made of resin fibers. As shown in FIGS. 6 and 7, the upstream conductive electrode a is connected to a discharge wire 28 made of a conductive wire.
The upstream conductive electrode a is disposed so as to contact the surface of the sheet-like member c. Also,
In arranging the conductive material d on the sheet-like member c, the discharge wires 30 are arranged on the rear surface of the sheet-like member c with an interval between the discharge wires 30, 30 and the surface of the sheet-like member c It is arranged so that it contacts. here,
A discharge wire 28 constituting the upstream conductive electrode a and a discharge wire 30 disposed as a conductive material d on the sheet-like member c
Means that one of the adjacent discharge lines 28, 28 (30,
The discharge wires 30 (28) constituting the other are alternately arranged so as to be arranged between the discharge wires 30). There is no space between the upstream conductive electrode a and the sheet-shaped member c, and the discharge efficiency is improved.
The probability that the active species generated by the discharge reach the sheet member c is further improved, and the decomposition efficiency of the odor component is improved. Further, a discharge wire 28 constituting the upstream conductive electrode a and a discharge wire 28 arranged as the conductive material d
Are alternately arranged via the sheet-shaped member c as described above, so that the discharge of the upstream-side conductive electrode a and the conductive material d becomes a creeping discharge performed along the surface of the sheet-shaped member c. In addition, uniform discharge over almost the entire surface of the sheet-like member c becomes possible, and the efficiency of decomposing odor components is further improved.

In the example shown in FIG. 5, a sheet-like member c similar to that shown in FIGS. 1 to 3 is used, but a plurality of times of the mountain fold and the valley fold in which the fold direction is the same direction is performed. The one repeatedly bent and formed into a wavy cross section (bellows shape) is used. Here, a horizontal solid line in FIG. 5A indicates a mountain-folded portion 31, and a horizontal broken line indicates a valley-folded portion 32. The front surface of the sheet member c is coated with a conductive paint to form a conductive layer 3.
3 is formed, and the conductive layer 33 forms an upstream conductive electrode a. The conductive layer 3 is applied to the back surface of the sheet member c by applying a conductive paint.
The conductive layer 34 forms a conductive material d disposed on the sheet-like member c. Here, as the upstream conductive electrode a and the conductive layers 33 and 34 constituting the conductive material d, a plurality of conductive layers 33 and 34 are formed at intervals in a direction orthogonal to the fold direction of the sheet-like member c. Further, the conductive layer 33 forming the upstream-side conductive electrode a and the conductive layer 34 arranged as the conductive material d are formed of adjacent conductive layers 33, 33 (3
4, 34), the conductive layer 34 (33) constituting the other
Are staggered so that are arranged.

As described above, when the upstream conductive electrode a is formed by applying a conductive paint to the surface of the sheet member c, the upstream conductive electrode a in contact with the surface of the sheet member c can be easily formed. Can be molded. Further, when the conductive material d is disposed on the sheet member c by applying a conductive paint on the surface of the sheet member c, the conductive material d can be easily disposed on the sheet member c. Further, by arranging the conductive layer 33 constituting the upstream conductive electrode a and the conductive layer 34 arranged as the conductive material d alternately via the sheet-shaped member c as described above, The discharge between the side conductive electrode a and the conductive material d is
A creeping discharge is generated along the surface of the sheet-like member c, and a uniform discharge over substantially the entire surface of the sheet-like member c becomes possible, so that the efficiency of decomposition of the odor component is further improved. Further, as shown in the figure, when the sheet-shaped member c is bent and formed into a corrugated shape (bellows shape), the surface area is increased by bending and forming the sheet-shaped member c to improve the deodorizing efficiency. However, it is easy to form the upstream conductive electrode a and the conductive material d in a shape following the shape of the sheet-like member c. Therefore, the upstream conductive electrode a and the conductive material d In this case, the entire surface of the sheet-like member c can be uniformly discharged by the electric discharge during this period, and the decomposition efficiency of the odor component is improved.

In the example shown above, the upstream conductive electrode a
And a discharge unit 2 having a sheet-like member c, a filter unit 6, and a fan 17 serving as a blowing unit, arranged in this order from the upstream side to the downstream side of the airflow generated by the blowing unit. However, the order of the arrangement is not limited to this example. For example, the filter unit 6, the discharge unit 2, and the fan 17 may be arranged in this order from the upstream side. In short, the discharge unit 2 is connected to the fan 17
If the upstream conductive electrode a is provided on the upstream side of the sheet member c, the odor component adsorbed on the adsorbent of the sheet member c is efficiently decomposed. As a result, the frequency of replacing the sheet-like member c can be reduced,
Alternatively, the replacement of the sheet-like member c can be made unnecessary.

[0060]

As described above, the air purifier according to the first aspect of the present invention is provided with the blowing means, the sheet-like member having the ventilation hole in which the catalyst and the adsorbent are arranged, and the discharging means. An air purifier, wherein the sheet-shaped member is disposed so that the sheet-shaped member is disposed in an airflow generated by a blowing unit, and the discharging unit is disposed upstream of the sheet-shaped member in the airflow. Since the upstream-side conductive electrode provided and the downstream-side conductive electrode provided downstream of the sheet-shaped member in the airflow than the sheet-shaped member, the air that has flowed into the air purifier by the blowing means is applied to the sheet-shaped member. Odor components are adsorbed by the disposed adsorbent, and at this time, active species such as oxygen radicals, ions, and electrons are generated by discharge by the discharge means,
When the active species reaches the sheet member, the catalyst disposed on the sheet member is activated, and the odor component adsorbed by the adsorbent can be decomposed.
Also, at this time, the active species generated between the upstream conductive electrode and the downstream conductive electrode will reach the sheet-like member with a high probability, and the decomposition efficiency of the odor component becomes extremely high. It is possible to extend the life of the adsorbent, reduce the frequency of replacing the sheet-like member,
Alternatively, replacement of the sheet-like member can be made unnecessary.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the sheet-like member is formed of a non-woven fabric, so that the resistance when air passes through the sheet-like member can be reduced. It can reduce the pressure loss of the air flow that has flowed into the purifier, and can also perform highly efficient odor decomposition.

According to a third aspect of the present invention, in addition to the constitution of the first or second aspect, since the sheet-like member is formed of fibrous activated carbon, the odor is improved by using fibrous activated carbon having excellent adsorption performance as an adsorbent. The components can be efficiently trapped and effectively decomposed, and the sheet-like member itself has a function as an adsorbent,
There is no need to separately arrange an adsorbent.

According to a fourth aspect of the present invention, in addition to the configuration of the first aspect, the upstream conductive electrode is disposed in contact with the upstream surface of the sheet member, and the downstream conductive electrode is connected to the sheet member. Since it is arranged in contact with the surface on the downstream side, no space is interposed between the upstream conductive electrode and the downstream conductive electrode and the sheet-like member, and the discharge efficiency is improved. Therefore, the probability that the active species generated by the discharge reaches the sheet-like member is further improved, and the decomposition efficiency of the odor component is improved.

According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, the upstream conductive electrode and the downstream conductive electrode are formed of conductive paint, so that the upstream conductive electrode is in contact with the surface of the sheet member. The side conductive electrode and the downstream conductive electrode can be easily formed, and even when the sheet-shaped member is bent and formed, the upstream-side conductive electrode and the downstream-side conductive electrode can be formed into a sheet-shaped member. It is easy to form it into a shape along the shape of.

An air purifier according to a sixth aspect of the present invention includes a blowing means, a sheet-like member having a ventilation hole in which a catalyst, an adsorbent, and a conductive material are arranged, and an upstream conductive electrode. An air purifier, wherein the sheet-like member is disposed so that the sheet-like member is disposed in an airflow generated by the blowing means, and an upstream conductive member is provided on an upstream side of the airflow from the sheet-like member. Since the electrodes are provided, the air that has flowed into the air purifier by the blowing means is such that the odor component is adsorbed by the adsorbent disposed on the sheet-like member, and at this time, the upstream conductive electrode and the sheet-like member Active species such as oxygen radicals, ions, and electrons are generated by the discharge between the active species and the active species reach the sheet-like member, whereby the catalyst disposed on the sheet-like member is activated and adsorbed by the adsorbent. Odor components Those which can be decomposed. Also, at this time, the active species generated between the upstream conductive electrode and the downstream conductive electrode will reach the sheet-like member with a high probability, and the decomposition efficiency of the odor component becomes extremely high. The service life of the adsorbent can be extended, the frequency of replacing the sheet-like member can be reduced, or the replacement of the sheet-like member can be made unnecessary.

According to a seventh aspect of the present invention, in addition to the configuration of the sixth aspect, since the sheet-like member is formed of a nonwoven fabric, the resistance when air passes through the sheet-like member can be reduced. It can reduce the pressure loss of the air flow that has flowed into the purifier, and can also perform highly efficient odor decomposition.

According to the eighth aspect of the present invention, in addition to the constitution of the sixth or seventh aspect, the sheet-like member is formed of a nonwoven fabric in which some or all of the fibers are made of conductive fibers.
Since the sheet-like member itself has a function as a conductive material, there is no need to separately arrange the conductive material, and it is possible to uniformly arrange the conductive material over the entire surface of the sheet-like member. This makes it possible to discharge uniformly over the entire surface of the sheet-like member, thereby improving the discharge efficiency. In addition, by bending the sheet-like member, the surface area of the sheet-like member is improved. In such a case, the conductive material can be disposed following the conductive material.

According to a ninth aspect of the present invention, in addition to the constitution of the sixth aspect, since the sheet-like member is formed of fibrous activated carbon, odor components can be reduced by using fibrous activated carbon having excellent adsorption performance as an adsorbent. The sheet-like member itself can function as an adsorbent, and can be efficiently decomposed and effectively decomposed, so that it is not necessary to separately arrange an adsorbent.

According to a tenth aspect of the present invention, in addition to the configuration of the sixth aspect, the upstream conductive electrode is disposed in contact with the upstream surface of the sheet member, and the conductive material is provided downstream of the sheet member. Because it is disposed in contact with the surface on the side, no space is interposed between the upstream-side conductive electrode and the sheet-like member, thereby improving the discharge efficiency. Thus, the probability of reaching the shaped member is further improved, and the decomposition efficiency of the odor component is improved.

According to an eleventh aspect of the present invention, in addition to the configuration of the tenth aspect, the upstream conductive electrode and the conductive material are formed of conductive paint, so that the upstream conductive electrode in contact with the surface of the sheet-shaped member is provided. The conductive electrode and the conductive material can be easily formed, and even when the sheet-shaped member is bent and formed, the upstream-side conductive electrode and the conductive material are formed into a shape along the shape of the sheet-shaped member. It is easy to form into.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a schematic view showing a configuration of a discharge unit and a filter unit according to the first embodiment.

FIG. 4 is a schematic diagram showing another configuration of the discharge unit.

FIGS. 5A and 5B are schematic diagrams showing still another configuration of the discharge unit, wherein FIG. 5A is a plan view and FIG. 5B is a side view.

FIG. 6 is a sectional view showing another example of the embodiment of the present invention.

FIG. 7 is a schematic diagram showing a configuration of a discharge unit and a filter unit of the above.

[Explanation of symbols]

 a upstream conductive electrode b downstream conductive electrode c sheet member d conductive material 1 air purifier

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 4C080 AA05 AA07 BB02 CC01 JJ05 KK08 MM05 QQ11 QQ17 QQ20 4G066 AA05B BA03 BA16 CA02 CA28 CA29 CA52 DA03

Claims (11)

[Claims] 1. An air purifier comprising a blowing means, a sheet-like member having a ventilation hole in which a catalyst and an adsorbent are disposed, and a discharging means, wherein the sheet is provided in an air flow generated by the blowing means. The sheet-like member is disposed so that the sheet-like member is disposed, and the discharging means is provided with an upstream conductive electrode disposed on the upstream side of the airflow from the sheet-like member, and the downstream of the airflow below the sheet-like member. An air purifier characterized by comprising a downstream conductive electrode disposed on the side. 2. The air purifier according to claim 1, wherein the sheet member is formed of a nonwoven fabric. 3. The air purifier according to claim 1, wherein the sheet-like member is formed of fibrous activated carbon. 4. An upstream conductive electrode is disposed in contact with an upstream surface of a sheet member, and a downstream conductive electrode is disposed in contact with a downstream surface of a sheet member. The air purifier according to claim 1, wherein 5. The air purifier according to claim 4, wherein the upstream conductive electrode and the downstream conductive electrode are formed of a conductive paint. 6. An air purifier comprising a blowing means, a sheet-like member having a ventilation hole in which a catalyst, an adsorbent, and a conductive material are arranged, and an upstream-side conductive electrode, wherein: The sheet-shaped member is arranged so that the sheet-shaped member is arranged in the generated airflow, and an upstream conductive electrode is arranged on the upstream side of the airflow from the sheet-shaped member. air purifier. 7. The air purifier according to claim 6, wherein the sheet member is formed of a nonwoven fabric. 8. The air purifier according to claim 6, wherein the sheet-like member is formed of a nonwoven fabric in which some or all of the fibers are made of conductive fibers. 9. The air purifier according to claim 6, wherein the sheet-like member is formed of fibrous activated carbon. 10. The method according to claim 1, wherein an upstream conductive electrode is disposed in contact with an upstream surface of the sheet member, and a conductive material is disposed in contact with a downstream surface of the sheet member. The air purifier according to claim 6. 11. An upstream conductive electrode and a conductive material,
2. The method according to claim 1, wherein the conductive material is formed of a conductive paint.
The air purifier according to 0.