JP2001149457A - Ozone deodorization unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ozone deodorization unit having superior deodorizing ability. SOLUTION: The ozone deodorization unit is constituted in such a way that four ozone degrading filters 17 are arranged with gaps in between in a ventilation path 4 and, when a blower 10 and an ozone generator 16 are actuated, air is sucked in a machine frame 1 through a suction port 13 and discharged from an exhaust port 8 after passing through the filters 17. In this case, turbulent flows are generated in the gaps among the filters 17 and the mixing ratio of an odor component with ozone is increased. In addition, since thin honey- comb metallic cores are used in the filters 17, the blowing capacity of the blower 10 is increased and the deodorizing ability of the ozone deodorization unit is significantly improved in general.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone deodorizing apparatus for deodorizing odor components in air by reacting the odor components with ozone.

[0002]

2. Description of the Related Art In the above-mentioned ozone deodorizing apparatus, a blower and an ozone generator are arranged in a machine frame, air containing an odor component is sucked into the machine frame, and ozone is generated in the machine frame. There are things. In this configuration, a honeycomb-shaped ceramic ozonolysis filter is provided in the machine frame, the odor component reacts with ozone on the surface of the ozonolysis filter to be deodorized, and the remaining ozone is removed from the ozonolysis filter. Decomposed on the surface and clean air is exhausted from the machine frame.

[0003]

In the case of the above-mentioned ozone deodorizing apparatus, the wall thickness of the cell part of the ozone decomposition filter is several hundred μm.
As described above, the pressure loss in the ozone decomposition filter is large. For this reason, the blowing capacity was low, and the deodorizing efficiency was poor.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ozone deodorizing device having excellent deodorizing performance.

[0004]

According to a first aspect of the present invention, there is provided an ozone deodorizing apparatus, comprising: a machine frame having an intake port and an exhaust port; a blower for sucking air from the intake port and discharging the air from the exhaust port; An ozone generator provided in a frame, and an ozone decomposition filter in which an ozone decomposition catalyst is fixed to the surface of a honeycomb-shaped metal core provided in the machine frame at a position downstream of the ozone generator. It is characterized in that the plate thickness of the cell portion of the metal core is set to 10 to 20 μm. According to the above means, since the honeycomb-shaped metal core is used for the ozone decomposition filter, the wall thickness of the cell portion can be made thinner than that of the ceramic ozone decomposition filter. For this reason, the pressure loss in the ozone decomposition filter is reduced, so that the blowing capacity is enhanced and the deodorizing ability is improved. Moreover, the wall thickness of the cell part is 1
Since the thickness is set to 0 μm to 20 μm, the strength of the ozone decomposition filter can be sufficiently satisfied.

According to a second aspect of the present invention, an ozone deodorizing apparatus is provided in the machine frame, the machine frame having an intake port and an exhaust port, a blower for sucking air from the intake port and discharging the air from the exhaust port. An ozone generator, and a plurality of ozone decomposition filters provided in the machine frame at a position downstream of the ozone generator and arranged in a gap along a blowing direction of the blower. The filter is characterized in that the ozone decomposition catalyst is fixed on the surface of a honeycomb-shaped metal core. According to the above means, since the honeycomb-shaped metal core is used for the ozone decomposition filter, the blowing capacity is increased. Moreover, since a plurality of ozone decomposition filters are arranged along the blowing direction,
The contact rate between the ozonolysis filter and the off-flavor component increases. Furthermore, a turbulent flow is formed in the gap between the ozone decomposition filters, and the mixing efficiency of the odor component and ozone is increased, so that the deodorizing performance is largely improved as a whole.

According to a third aspect of the present invention, there is provided an ozone deodorizing apparatus, wherein a machine frame having an intake port and an exhaust port, a blower for sucking air from the intake port and discharging the air from the exhaust port, are provided in the machine frame. An ozone generator, and a plurality of ozone decomposition filters provided in the machine frame at a position downstream of the ozone generator and arranged along a gap along a blowing direction of the blower. Among the decomposition filters, the one adjacent to the ozone generator was formed of a honeycomb-shaped ceramic core, and the remaining one of the plurality of ozone decomposition filters was fixed with an ozone decomposition catalyst on the surface of a honeycomb-shaped metal core. It has a feature in the configuration. According to the above means, since the honeycomb-shaped metal core is used for the ozone decomposition filter, the blowing capacity is increased. Moreover, since the plurality of ozonolysis filters are arranged along the blowing direction, the contact rate between the ozonolysis filter and the off-flavor component increases. Furthermore, since a turbulent flow is formed in the gap between the ozonolysis filters, the mixing efficiency of the odor component and ozone is increased, and the deodorizing performance is largely improved as a whole. In addition, since the insulation performance between the ozone generator and the adjacent ceramic ozone decomposition filter is improved, spark discharge or the like is prevented from being generated between the two, and a stable discharge state can be obtained with the ozone generator. .

According to a fourth aspect of the present invention, in the ozone deodorizing apparatus, the gap dimension W between the ozone decomposition filters is "0 mm <W ≦ 5 m
m ”is set. According to the above-mentioned means, the size of the gap between the ozone decomposition filters is large enough to efficiently generate turbulence and small enough to effectively reduce the pressure loss, so that the deodorizing performance is further improved. .

According to a fifth aspect of the present invention, there is provided an ozone deodorizing apparatus, wherein a rectifying chamber having an inner surface coated with an ozonolysis catalyst or a rectifying chamber having an inner wall formed of an ozonolysis catalyst is provided downstream of an intake port in the machine frame. It has a characteristic in the place where it is provided. According to the above-described means, ozone flowing backward toward the intake port is decomposed by the ozone decomposition catalyst in the rectifying chamber, so that ozone is prevented from leaking from the intake port to the outside.

According to a sixth aspect of the present invention, the ozone deodorizing apparatus is characterized in that a foamed cushioning material made of EPDM is provided between the outer peripheral surface of the ozonolysis filter and the machine frame. According to the above-mentioned means, EPDM having excellent ozone resistance and high elasticity is provided between the ozonolysis filter and the machine frame.
Ozone is sealed by the foam cushioning material, so that leakage of ozone from between the two is stably prevented over a long period of time, and furthermore, mechanical damage such as deformation of the ozone decomposition filter is prevented. You.

[0010] The ozone deodorizing device according to claim 7 is characterized in that air passing through an ozone generator is selectively passed through an ozone decomposition filter in both forward and reverse directions. According to the above-described means, when air flows in the ozonolysis filter in the forward direction, one end of the ozonolysis filter may be poisoned and deteriorated by the adsorption of the odorous component, but may flow in the opposite direction to the ozonolysis filter. Since one end of the ozonolysis filter is regenerated while the air is flowing, deterioration of the ozonolysis filter is suppressed, and the life of the ozonolysis filter is extended.

The ozone deodorizing device according to the present invention is characterized in that air flows in a positive direction from an intake port through an ozone generator to an ozone decomposition filter and is exhausted from an exhaust port. It is characterized in that a variable ventilation path is provided in the machine frame, in which the ventilation path is switched between a state in which air flows in the reverse direction through the ozone decomposition filter and the air is exhausted from the exhaust port. According to the above-described means, ozone generators are individually arranged at both ends of the ozone decomposition filter, and air passing through the ozone generator is generated based on the normal rotation of the blower in the operation state of one of the ozone generators. Since there is no need to flow air through the ozone generator in the reverse direction based on flowing in the forward direction or reversing the blower while the other ozone generator is in operation, the insulation structure for high voltage measures is simplified. Only needs to be done.

According to a ninth aspect of the present invention, the ozone deodorizing device is characterized in that the direction of air flow to the ozone decomposition filter is switched based on the accumulated time of the deodorizing operation. According to the above means, since the deterioration of the ozonolysis filter due to the odor component can be stopped within a predetermined range corresponding to the integrated time of the deodorizing operation, the ozonolysis filter can be regenerated, so that the life of the ozonolysis filter is further extended.

According to a tenth aspect of the present invention, the ozone deodorizing apparatus is characterized in that the direction of air flow to the ozone decomposition filter is switched based on the integrated value of the amount of air flow. According to the above means, the ozone decomposition filter can be regenerated while the deterioration of the ozone decomposition filter due to the odor component is stopped within a predetermined range corresponding to the integrated value of the air flow, so that the life of the ozone decomposition filter is further extended.

[0014] The ozone deodorizing device according to the eleventh aspect is characterized in that the direction of ventilation to the ozone decomposition filter is switched in conjunction with the start or stop of the deodorizing operation. According to the above-described means, since the complicated process of calculating the integrated time of the deodorizing operation and the integrated value of the ventilation amount is not required, the electrical configuration of software and the like is simplified.

According to a twelfth aspect of the present invention, the ozone deodorizing apparatus is characterized in that the switching of the ventilation direction to the ozonolysis filter is performed while the ozone generator and the blower are stopped. According to the above means, unlike the case where the variable ventilation path is operated and the ventilation direction is switched in the operating state of the ozone generator and the blower, ozone is prevented from leaking to the outside of the machine frame through the variable ventilation path. .

[0016]

FIG. 1 shows a first embodiment of the present invention.
A description will be given with reference to FIG. In this embodiment, the present invention is applied to an ozone deodorizing apparatus for air purification installed in a room of a house, in a car, in a refrigerator, in a toilet, or the like. First, in FIG. 1, a substantially L-shaped partition plate 2 is fixed in a machine frame 1. The partition plate 2 includes a machine chamber 3 that is horizontally long in the machine frame 1, a horizontally long ventilation path 4 located above the machine room 3, and a vertically long intake chamber 5 that is located to the right of the machine room 3 and the ventilation path 4. A fan motor 6 composed of an AC motor is fixed to the left end in the machine room 3. The fan motor 6 has a rotating shaft 7 extending in the vertical direction, and the rotating shaft 7 projects into the ventilation passage 4.

An exhaust port 8 is provided at the left end of the ventilation path 4. The exhaust port 8 has a short cylindrical shape (bell-mouth shape) directed vertically, and a rotating shaft 7 of a fan motor 6 is connected to an axial fan 9 located in the exhaust port 8. ing. Note that reference numeral 10 denotes a blower including the fan motor 6 and the fan 9.

A current plate 11 is fixed in the intake chamber 5. The rectifying plate 11 is formed in a vertically elongated flat plate shape extending in the up-down direction, and forms a rectifying chamber 12 in the right half of the intake chamber 5. An intake port 13 is provided on the right side wall of the intake chamber 5, and the intake port 13 has a louver shape that descends from right to left.

An electrical component storage section 14 is provided in the machine room 3. In the electrical component storage section 14, a fan motor 6 is provided.
An electric component such as a drive circuit (not shown) for applying drive power is stored in the drive circuit. When drive power is applied to the fan motor 6 from the drive circuit, the fan motor 6 is driven. Then, air flows through the following path based on the rotation of the fan 9.

<Regarding Air Flow Path> (1) Air outside the machine casing 1 is sucked into the rectifying chamber 12 along the slope of the intake port 13 and collides with the rectifying plate 11. (2) After the air flows downward in the rectifying chamber 12 along the rectifying plate 11, the air flows upward through a gap between the lower end portion of the rectifying plate 11 and the machine frame 1. (3) The air flows from the right side to the left side in the ventilation path 4, and is discharged to above the machine frame 1 through the exhaust port 8. The arrows indicate the flow of air.

A transformer 15 is fixed to the right end in the machine room 3. The transformer 15 generates an AC high voltage for discharge from a commercial AC power supply.
A surface discharge type ozone generator 16 is electrically connected between the two output terminals. The ozone generator 16 mainly includes a pair of parallel electrode plates (not shown) fixed to the downstream side of the rectification chamber 12, and a pair of parallel electrodes from the transformer 15 when the blower 10 is operating. When an AC high voltage for discharge is applied between the plates, oxygen atoms are generated from oxygen molecules in the air, and ozone is generated based on the bonding of the oxygen atoms with the oxygen molecules in the air.

In the ventilation passage 4, four ozone decomposition filters 17 are fixed in parallel along the flow direction of the outside air.
Width W is 1 m between adjacent ozone decomposition filters 17
m gap is formed. As shown in FIG. 2, each of these ozonolysis filters 17 includes a metal core 18 made of honeycomb formed of aluminum and a metal mesh 19 covering both ends of the metal core 18 (the metal mesh 1 at one end).
9) and a manganese oxide-based ozonolysis catalyst (not shown). The ozonolysis catalyst adheres to the surface of the hexagonal cylindrical cell portion extending in the length direction L of the metal core 18. Have been.

The shape of each metal core 18 is shown below. Length dimension L: 20 mm Wall thickness of cell part: 15 μm Cell density: 350 per 25.4 mx 25.4 m
Pieces

A main switch (not shown) is mounted on the machine casing 1, and the main switch is electrically connected to a control device (not shown). This control device is mainly configured by a microcomputer, and upon detecting the ON of the main switch, supplies power to the coil of the fan relay and the coil of the transformer relay (both not shown) in that order.

The contacts of the fan relay and the contacts of the transformer relay (both not shown) are interposed in the power supply path for the fan motor 6 and the power supply path for the transformer 15, and power is supplied to the coil of the fan relay and the coil of the transformer relay. When supplied, power is supplied to the fan motor 6 and the transformer 15 in this order based on the fact that the contacts of the fan relay and the contacts of the transformer relay are closed in that order. Then, the blower 10 and the ozone generator 16 operate in this order, and the ozone deodorizing operation is started.

When the ozone deodorizing operation is started, air flows through the above-described path, and the ozone generator 16 generates ozone. Then, based on the adsorption of ozone on the surface of the ozone decomposition filter 17 with the odor component in the air, an oxidation reaction occurs to decompose the odor component. At the same time, the remaining ozone that does not contribute to the decomposition of the odor component is removed by the ozone decomposition filter 17.
Is decomposed into oxygen and carbon dioxide on the surface of the air, and clean air is discharged from the exhaust port 8.

When the main switch is turned on during execution of the ozone deodorizing operation, the control device cuts off the coil of the transformer relay and the coil of the fan relay in that order based on the turning on of the main switch. Then, the contacts of the transformer relay and the contacts of the fan relay are turned off in that order,
The ozone deodorizing operation is stopped based on the fact that the operation of the transformer 15 and the fan motor 6 is stopped in this order.

According to the first embodiment, since the honeycomb-shaped metal core 18 is used for the ozone decomposition filter 17, the wall thickness of the cell portion can be made smaller than that of the ozone decomposition filter using the honeycomb-shaped ceramic score. For this reason, the pressure loss in the ozone decomposition filter 17 is reduced, so that the blowing capacity is enhanced and the deodorizing ability is improved. In addition, since the wall thickness of the cell portion is set to 15 μm, the mechanical strength of the ozone decomposition filter 17 can be sufficiently satisfied.

Further, since the rectifying chamber 12 is provided in the machine frame 1 at a position downstream of the intake port 13, the flow of air is adjusted and the pressure loss is further reduced. For this reason, since the amount of blown air is further increased, the deodorizing performance is further improved.

FIG. 3 shows the pressure loss (mmH 2 O) and the wind speed (m
/ Sec), where white squares indicate metal-made ozonolysis filters 17 and black squares indicate ceramic ozonolysis filters. As is apparent from FIG. 3, the pressure drop of the metal ozone decomposition filter 17 is reduced by about 60 to 70% as compared with the ceramic ozone decomposition filter, and the metal ozone decomposition filter 17 is replaced with the ceramic ozone decomposition filter. It can be seen that the air flow increases when used with the same pressure loss as the ozone decomposition filter, and the noise decreases when used with the same air flow. The ceramic ozone decomposition filter used in the experiment has the same cell density as the metal ozone decomposition filter 17.

Further, since a plurality of ozone decomposition filters 17 are arranged along the blowing direction of the blower 10, the contact rate between the ozone decomposition filter 17 and the off-odor component is increased. Moreover,
A gap was provided between the ozone decomposition filters 17. For this reason, a turbulent flow is formed in the gap and the mixing ratio of the odor component and ozone is increased, so that the deodorizing performance is largely improved as a whole.
At the same time, it is not necessary to perform a difficult operation for manufacturing a long honeycomb-shaped metal core, so that manufacturing workability is also improved.

The gap W between the ozone decomposition filters 17 is set to a value "1" large enough to efficiently generate turbulence and small enough to reduce pressure loss efficiently.
mm ", the deodorizing performance is further improved and the apparatus becomes compact.

FIG. 4A is an experimental result showing the relationship between the pressure loss (mmH 2 O) and the gap size W (mm), and FIG. 4B is the deodorizing efficiency (%) and the gap size W ( mm). As is clear from FIG. 4A, when the gap size W is “0 mm <W ≦ 5 mm”, the pressure loss is suppressed to 10% or less of the case where the “width dimension W = 0”. In this case, as shown in FIG.
It can be seen that a deodorizing efficiency of 95% or more is obtained, and excellent deodorizing performance is obtained when the gap size W is set to 1 mm.

Next, a second embodiment of the present invention will be described with reference to FIG. Substantially the entire inner surface of the rectifying chamber 12 is coated with a manganese oxide-based ozone decomposition catalyst 20 in the form of particles as shown by oblique lines.

According to the second embodiment, the ozone flowing backward toward the intake port 13 immediately after the stop of the ozone deodorizing operation or at the time of a power failure is decomposed in the rectification chamber 12, so that the ozone flows from the intake port 13 to the outside. Is prevented from leaking. In addition, intake port 1
It has been experimentally confirmed that the external ozone concentration of No. 3 is as follows during 30 seconds when the ozone deodorizing device is turned off from the operating state. When the above processing is not performed: 0.04 ppm or more
0.17 ppm When the above processing is performed …… Not more than the detection limit

In the second embodiment, the rectifying chamber 1
2 is coated with the ozone decomposition catalyst 20, but is not limited to this.
The ozone decomposition catalyst 20 may be coated on a part of the inner surface of the second. In this case, it is preferable to coat the ozone decomposition catalyst 20 on the corners and the like of the rectification chamber 12 where ozone collides and stays when flowing backward.

In the second embodiment, the inner surface of the rectifying chamber 12 is coated with the ozone decomposition catalyst 20, but the present invention is not limited to this.
May be formed of an ozone decomposition catalyst as a material.

Next, a third embodiment of the present invention will be described with reference to FIG. Two partition plates 22 extending in the left-right direction are fixed in the machine casing 21. These partition plates 22 are attached to the machine frame 21.
1st bypass ventilation passage 23, normal ventilation passage 2
4, the second bypass ventilation passage 25 is formed in three vertical rows, and a first damper 26 is mounted at the right end of the first bypass ventilation passage 23 so as to be rotatable about a shaft 27. I have. The first damper 26 is connected to a first damper motor (not shown), and switches between an upright state (see a solid line) and an inverted state (see a two-dot chain line) based on driving of the first damper motor. Rotate.

A second damper 28 is mounted at the left end of the normal ventilation path 24 so as to be rotatable about a shaft 29. The second damper 28 is connected to a second damper motor (not shown), and switches between an inverted state (see a solid line) and an upright state (see a two-dot chain line) based on driving of the second damper motor. Rotate.

At the right end of the normal ventilation path 24, a third damper 30 is mounted so as to be rotatable about a shaft 31. The third damper 30 is connected to a third damper motor (not shown), and switches between an inverted state (see a solid line) and an upright state (see a two-dot chain line) based on driving of the third damper motor. Rotate.

A fourth damper 32 is mounted at the left end of the second bypass ventilation passage 25 so as to be rotatable about a shaft 33. The fourth damper 32 is connected to a fourth damper motor (not shown), and switches between an upright state (see a solid line) and an inverted state (see a two-dot chain line) based on driving of the fourth damper motor. Rotate.

An intake chamber 34 is formed at the right end in the machine casing 21, and a louver-shaped intake port 35 is provided on the right side wall of the intake chamber 34. The transformer 15 is fixed in the intake chamber 34. An ozone generator 16 is electrically connected to the transformer 15, and the ozone generator 16 is mechanically fixed in an intake chamber 34.

An exhaust chamber 36 is formed at the left end of the machine casing 21, and a bell mouth-shaped exhaust port 37 is provided on the left side wall of the exhaust chamber 36. Further, the fan motor 6 of the blower 10 is fixed in the exhaust chamber 36 and the blower 1
The zero fan 9 is housed in the exhaust port 37. Also,
Normally, four metal ozone decomposition filters 17 are fixed in the ventilation passage 24, and a gap having a width W of 1 mm is formed between the ozone decomposition filters 17.

The first damper motor to the fourth damper motor are electrically connected to a control device, and the control device operates the first damper motor.
The following ozone deodorizing operation is executed based on the drive control of the damper motor to the fourth damper motor. The following operation is performed by the control device based on a control program recorded in a memory in advance.

<Normal Operation> When the control device detects that the main switch has been turned on, as shown by the solid line, the control device rotates the first damper 26 to the upright state, and the first bypass air passage 23
Close the right end of the. In addition, the second damper 28 is turned upside down to open the left end of the first bypass ventilation passage 23 and the left end of the normal ventilation passage 24. Further, the third damper 30 is turned upside down to open the right end of the normal ventilation passage 24 and the right end of the second bypass ventilation passage 25. Further, the fourth damper 32 is turned to the upright state, and the left end of the second bypass ventilation passage 25 is closed.

When the control device rotates the first damper 26 to the fourth damper 32, it drives the blower 10 and the ozone generator 16 in that order. Then, air outside the machine casing 21 is sucked into the suction chamber 34 through the suction port 35, passes through the four ozone decomposition filters 17 in the normal ventilation path 24 from right to left, and passes through the exhaust chamber 36. And is discharged through the exhaust port 37. At this time, the ozone generator 16
Ozone is generated by the above, and the odor component is decomposed based on the adsorption of the odor component on the surface of the ozone decomposition filter 17. At the same time, residual ozone is decomposed on the surface of the ozone decomposition filter 17, and clean air is discharged from the exhaust port 37. The arrow A on the ozone decomposition filter 17 indicates the forward flow of air during normal operation.

<When the accumulated operation time exceeds the reference value> The control device accumulates the operation time of the ozone generator 16 using a timer and records the accumulated time in a memory. When it is detected that it has exceeded, the operation of the ozone generator 16 and the blower 10 is stopped in this order. Then, while the deodorizing operation is interrupted, the first to fourth damper motors are drive-controlled, and the first to fourth dampers 26 to 32 are rotated as indicated by the two-dot chain lines. Hereinafter, the operation states of the first damper 26 to the fourth damper 32 will be described.

The control device rotates the first damper 26 in an inverted state, and opens the right end of the first bypass ventilation passage 23. Further, the second damper 28 is turned upright so that the left end of the first bypass ventilation passage 23 communicates with the left end of the normal ventilation passage 24. Further, the third damper 30 is turned upright so that the right end of the normal ventilation passage 24 communicates with the right end of the second bypass ventilation passage 25. Further, the fourth damper 32 is rotated in an inverted state, and the second bypass air passage 25 is rotated.
Open the left end of the.

When the control device rotates the first damper 26 to the fourth damper 32, the operation of the blower 10 and the ozone generator 16 is restarted in that order. Then, the machine frame 21
Is sucked into the suction chamber 34 through the suction port 35, flows from the right to the left in the first bypass ventilation path 23, and flows into the normal ventilation path 24 from the left end. And
It passes through the four ozone decomposition filters 17 based on the flow from the left to the right in the normal ventilation passage 24, and flows into the second bypass ventilation passage 25 from the right end. Thereafter, the air flows from right to left in the second bypass ventilation passage 25 and is discharged through the exhaust port 37.

The arrow B on the ozone decomposition filter 17 indicates the flow of air in the reverse direction when the integrated operation time exceeds the reference value. Reference numeral 38 denotes a first bypass ventilation path 23, a normal ventilation path 24, and a second bypass ventilation path 2.
5 shows a variable ventilation path composed of the first damper 26 to the fourth damper 32. As is clear from the above description, the variable ventilation path 38 includes the first damper motor to the fourth damper motor.
With the damper motor as a drive source, a state in which air flows in the direction of arrow A from the intake port 35 through the ozone generator 16 to the ozone decomposition filter 17 and is exhausted from the exhaust port 37, and the ozone generator 16 is The ventilation path is switched between a state in which air flows in the direction of arrow B through the ozone decomposition filter 17 and the air is exhausted from the exhaust port 37.

According to the third embodiment, the ozone generator 1
6 was selectively passed through the ozonolysis filter 17 in both directions of arrows A and B. For this reason, while air is flowing in the direction of arrow A through the ozone decomposition filter 17, the left end of the ozone decomposition filter 17 may be poisoned and deteriorated by the adsorption of the odor component, but the ozone decomposition filter 17 Since the left end of the ozone decomposition filter 17 is regenerated while the air is flowing in the direction, the deterioration of the ozone decomposition filter 17 is suppressed, and the life of the ozone decomposition filter 17 is extended.

Further, a variable ventilation path 38 is provided which switches the ventilation path between a state in which air flows in the direction of arrow A and a state in which air flows in the direction of arrow B through the ozone decomposition filter 17. For this reason, the ozone generator 16 is provided at the left and right ends of the normal ventilation path 24.
Are individually arranged, and the air passing through the ozone generator 16 at the right end is caused to flow in the direction of arrow A based on the normal rotation of the blower 10 in the operating state of the ozone generator 16 at the right end.
By inverting the blower 10 while the ozone generator 16 at the left end is in operation, the air passing through the ozone generator 16 at the left end does not need to flow in the direction of arrow B. Is easy.

The direction of air flow to the ozone decomposition filter 17 was switched based on the accumulated time of the deodorizing operation. Therefore, the deterioration of the ozone decomposition filter 17 due to the odor component can be stopped within a predetermined range corresponding to the integrated time of the deodorizing operation, so that the ozone decomposition filter 17 can be regenerated.

The operation of the blower 10 and the ozone generator 16 was stopped when the direction of air flow to the ozone decomposition filter 17 was switched from the direction of arrow A to the direction of arrow B. Therefore, unlike the case where the ventilation direction is switched in the operation state of the blower 10 and the ozone generator 16, ozone flows from the left end of the first bypass ventilation passage 23 and the left end of the second bypass ventilation passage 25 to the exhaust port. Leakage to the outside through 37 is prevented.

In the third embodiment, the direction of air flow to the ozone decomposition filter 17 is switched from the direction of arrow A to the direction of arrow B based on the accumulated time of the deodorizing operation. However, the present invention is not limited to this. For example, the following <Modification 1>
Alternatively, it may be configured as in <Modification 2>.

<Modification 1> A flow meter is provided in the normal ventilation path 24. Then, based on the output signal from the flow meter, the integrated value of the ventilation amount to the ozone decomposition filter 17 is calculated and recorded in the memory of the control device. In this state, when the integrated value of the ventilation amount exceeds the reference value recorded in the memory in advance, the variable ventilation passage 38 is driven, and the ventilation direction for the ozone decomposition filter 17 is switched from the direction of arrow A to the direction of arrow B. In the case of this configuration, the ozone decomposition filter 17 can be regenerated by stopping the deterioration of the ozone decomposition filter 17 within a predetermined range corresponding to the integrated value of the air flow.
7 has a longer life.

<Modification 2> Each time the deodorizing operation is started based on the turning on of the main switch, or each time the deodorizing operation is stopped based on the turning on of the main switch, the variable ventilation passage 38 is provided.
To alternately switch the ventilation direction to the ozone decomposition filter 17 in the direction of arrow A → the direction of arrow B → the direction of arrow A. In the case of this configuration, since a complicated process of calculating the integrated time of the deodorizing operation and the integrated value of the ventilation amount is not required, the electrical configuration such as software of the control device is simplified.

In the first to third embodiments, all of the four ozonolysis filters 17 are made of metal. However, the present invention is not limited to this. Of these, the one at the right end adjacent to the ozone generator 16 may be composed of only a honeycomb-shaped ozone-decomposable ceramic score.

In the case of this configuration, one ozonolysis filter made of ceramics and three ozonolysis filters 17 made of metal are arranged with a gap parallel to the blowing direction, so that the deodorizing performance is improved. Moreover, the ozone generator 16
The insulation performance between the filter and the adjacent ceramic ozone decomposition filter is improved, and the occurrence of spark discharge or the like between them is prevented, so that a stable discharge state can be obtained in the ozone generator 16. The metal ozone decomposition filter 1
It has been experimentally confirmed that the spark discharge onset voltage when using a ceramic ozone decomposition filter is 15 kV or more, while the spark discharge onset voltage when using No. 7 is 8.4 kV.

Next, a fourth embodiment of the present invention will be described with reference to FIG. EP on the outer peripheral surface of each ozone decomposition filter 17
A foam cushioning material 39 having a base material of DM (ethylene propylene diene rubber) is provided. The outer peripheral surface of each foaming cushioning material 39 corresponds to the inner peripheral surface of the ventilation passage 4 of FIG. 1 or the normal ventilation passage 24 of FIG. It is in close contact with the inner peripheral surface.

According to the fourth embodiment, the space between the ozonolysis filter 17 and the ventilation passage 4 or the ozonolysis filter 1
7 between the normal ventilation path 24 and the foam cushioning material 3 made of EPDM
Blocked by 9. Since the foam buffer 39 made of EPDM is excellent in ozone resistance, the ozone decomposition filter 17 is used.
Leakage of ozone from between the air passage 4 and between the ozone decomposition filter 17 and the normal air passage 24 is stably prevented over a long period of time. In addition, since the foam cushioning material 39 made of EPDM is rich in elasticity, the ozone decomposition filter 17 can be fixed without giving any mechanical damage such as deformation or distortion.

When the amount of the ozone decomposition catalyst dropped from the ozonolysis filter 17 was experimentally compared with the case where the foam cushioning material 39 was used, the amount of the drop was detected by weight detection in the former case. While it was below the limit value, in the latter case, it was 20 to 30 mg for one ozonolysis filter 17.

In the first to fourth embodiments, the gap W between the four ozone decomposition filters is set to 1
mm, but is not limited to this.
It is preferable to set within the range of “0 mm <W ≦ 5 mm”.

In the first to fourth embodiments, the start and stop of the ozone deodorizing operation are executed based on the operation of the main switch. However, the present invention is not limited to this. For example, the ozone deodorizing operation is started. A start switch and a stop switch for stopping the ozone deodorizing operation may be separately provided.

In the first to fourth embodiments, four ozone decomposition filters 17 are arranged in the ventilation passage 4 and the normal ventilation passage 24. However, the present invention is not limited to this. One to three ozonolysis filters may be arranged, or five or more ozonolysis filters 17 may be arranged.

In the first to fourth embodiments, the ozone generator 16, the ozone decomposing filter 17, and the blower 10 are arranged in the machine frame 1 or the machine frame 21 in this order. However, the present invention is not limited to this. For example, the blower 10, the ozone generator 16, and the ozone decomposition filter 17 may be arranged in this order. In this case, it is preferable to discharge air from the blower 10 toward the ozone generator 16.

In the first to fourth embodiments, aluminum is used as the material of the metal core 18. However, the present invention is not limited to this. For example, iron may be used.

In the first to fourth embodiments, the manganese oxide-based ozone decomposition catalyst is used.
The invention is not limited to this, and for example, an ozone decomposition catalyst based on lead oxide may be used.

In the first to fourth embodiments, the plate thickness of the cell portion of the metal core 18 is set to 15 μm. However, the present invention is not limited to this.
It is good to set within the range of m.

[0070]

As is clear from the above description, the ozone deodorizing apparatus of the present invention has the following effects. Claim 1
According to the means described above, since the honeycomb-shaped metal core is used for the ozone decomposition filter, the deodorizing ability is improved. Moreover, the wall thickness of the metal core cell portion is 10 μm.
Since the thickness is set to m to 20 μm, the mechanical strength of the ozonolysis filter can be sufficiently satisfied. According to the second aspect of the present invention, since the honeycomb-shaped metal core is used for the ozone decomposition filter, and the plurality of ozone decomposition filters are arranged via the gap, the deodorizing performance is greatly improved.

According to the third aspect of the present invention, since a honeycomb-shaped metal core is used for the ozonolysis filter and a plurality of ozonolysis filters are arranged with a gap therebetween, the deodorizing performance is greatly improved. In addition, since the ozone decomposition filter adjacent to the ozone generator is made of ceramics, spark discharge or the like is prevented from being generated between the two, and a stable discharge state can be obtained with the ozone generator. According to the fourth aspect of the present invention, the gap size between the ozone decomposition filters is large enough to efficiently generate turbulence and small enough to effectively reduce the pressure loss, ie, “0 mm <W ≦ 5mm "
Deodorization performance is further improved.

According to the fifth aspect of the present invention, the rectification chamber whose inner surface is coated with the ozonolysis catalyst or the rectification chamber whose inner wall is formed of the ozonolysis catalyst is provided downstream of the intake port. Also, ozone is prevented from leaking from the intake port to the outside. According to the means of claim 6, since the foaming buffer material made of EPDM is provided between the ozone decomposition filter and the machine casing, the leakage of ozone between the two can be stably performed for a long period of time. Moreover, mechanical damage such as deformation of the ozonolysis filter is prevented.

According to the seventh aspect of the present invention, since the air passing through the ozone generator is selectively passed to the ozone decomposition filter in both the forward and reverse directions, the deterioration of the ozone decomposition filter is suppressed, and the ozone decomposition filter is suppressed. Longer lifespan.
According to the eighth aspect of the present invention, since the ventilation direction to the ozone decomposition filter is switched by the variable ventilation path, the insulating structure related to the high voltage measure can be simplified.

According to the ninth aspect of the present invention, the ventilation direction of the ozone decomposition filter is switched based on the integrated time of the deodorizing operation, so that the life of the ozone decomposition filter is further extended. According to the tenth aspect, since the switching is performed based on the integrated value of the ventilation amount in the ventilation direction to the ozone decomposition filter, the life of the ozone decomposition filter is further extended.

According to the eleventh aspect, the direction of air flow to the ozone decomposition filter is switched in conjunction with the start or stop of the deodorizing operation, so that the electrical configuration is simplified. According to the twelfth aspect, the switching of the ventilation direction to the ozone decomposition filter is performed while the ozone generator and the blower are stopped, so that ozone is prevented from leaking to the outside of the machine frame.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention (a diagram showing an internal configuration of an ozone deodorizing apparatus).

FIG. 2 is a perspective view showing the ozonolysis filter partially cut away.

FIG. 3 is a view experimentally showing a relationship between pressure loss and wind speed.

FIG. 4 (a) is a diagram experimentally showing a relationship between pressure loss and gap size, and FIG. 4 (b) is a diagram experimentally showing a relationship between deodorizing efficiency and gap size.

FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG. 1, showing a third embodiment of the present invention.

FIG. 7 is a view showing a fourth embodiment of the present invention (a view showing an ozonolysis filter).

[Explanation of symbols]

1 is a machine frame, 8 is an exhaust port, 10 is a blower, 12 is a rectification room,
Reference numeral 13 denotes an intake port, 16 denotes an ozone generator, 17 denotes an ozone decomposition filter, 18 denotes a metal core, 21 denotes a machine frame, 35 denotes an intake port, 37 denotes an exhaust port, 38 denotes a variable ventilation path, and 39 denotes a foam cushioning material.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C080 AA07 BB02 CC01 MM08 QQ11 4D048 AA12 AA22 AB03 AC07 BA10Y BA39Y BB02 CA07 CC02 CC25 CC32 CC36 CC40

Claims (12)

[Claims] A machine frame having an intake port and an exhaust port; a blower that sucks air from the intake port and discharges the air from the exhaust port; an ozone generator provided in the machine frame; And an ozone decomposition filter having an ozone decomposition catalyst fixed on the surface of a honeycomb-shaped metal core, the metal core having a cell part having a thickness of 10 mm. An ozone deodorizing device characterized in that the thickness is set to ２０20 μm. 2. A machine frame having an intake port and an exhaust port; a blower that sucks air from the intake port and discharges the air from the exhaust port; an ozone generator provided in the machine frame; A plurality of ozone decomposing filters provided at a position downstream of the ozone generator and arranged in a gap along a blowing direction of the blower, wherein each of the ozone decomposing filters has a honeycomb shape. An ozone deodorizing device having a configuration in which an ozone decomposition catalyst is fixed on a surface of a metal core. 3. A machine frame having an intake port and an exhaust port, a blower that sucks air from the intake port and discharges the air from the exhaust port, an ozone generator provided in the machine frame, and the machine frame. And a plurality of ozone decomposition filters arranged downstream of the ozone generator and arranged along a gap along the blowing direction of the blower, wherein the ozone generation filter of the plurality of ozone decomposition filters is provided. The one adjacent to the vessel is formed of a honeycomb-shaped ceramic score, and the remaining one of the plurality of ozonolysis filters is configured such that an ozonolysis catalyst is fixed to the surface of a honeycomb-shaped metal core. Characteristic ozone deodorizer. 4. A gap dimension W between ozonolysis filters.
The ozone deodorizing device according to claim 2 or 3, wherein is set to "0 mm <W ≤ 5 mm". 5. A rectification chamber whose inner surface is coated with an ozonolysis catalyst or a rectification chamber whose inner wall is formed of an ozonolysis catalyst is provided in the machine casing at a position downstream of the air inlet. The ozone deodorizing device according to any one of claims 1 to 3, wherein: 6. A foam cushioning material comprising EPDM as a base material is provided between an outer peripheral surface of an ozonolysis filter and a machine frame. Ozone deodorizer. 7. The ozone deodorizing apparatus according to claim 1, wherein air passing through an ozone generator is selectively passed through the ozone decomposition filter in both forward and reverse directions. 8. A state in which air flows in a positive direction from an intake port to an ozonolysis filter via an ozone generator and is exhausted from an exhaust port, and a state where ozone is supplied from an intake port via an ozone generator. 4. A variable ventilation path for switching a ventilation path between a state in which air flows in a reverse direction to the decomposition filter and a state in which air is exhausted from an exhaust port is provided.
The ozone deodorizing device according to any one of the above. 9. The ozone deodorizing apparatus according to claim 7, wherein the direction of air flow to the ozone decomposition filter is switched based on the accumulated time of the deodorizing operation. 10. The ozone deodorizing device according to claim 7, wherein the direction of air flow to the ozone decomposition filter is switched based on an integrated value of air flow. 11. The ozone deodorizing apparatus according to claim 7, wherein the direction of ventilation to the ozone decomposition filter is switched in conjunction with the start or stop of the deodorizing operation. 12. The ozone deodorizing apparatus according to claim 9, wherein the switching of the ventilation direction to the ozonolysis filter is performed when the ozone generator and the blower are stopped.