KR20050005716A - Catalytic deodorizing device - Google Patents

Abstract

PURPOSE: To provide a catalytic deodorization apparatus which is able to change amount of ultraviolet rays generated from a discharge device in accordance with concentration of odor. CONSTITUTION: The apparatus that excites photocatalyst (12) by ultraviolet rays generated by a discharge device includes a power for generation of high voltage (11) having a discharge voltage variable circuit (32) that varies discharge amount of the discharge device in accordance with concentration of odor detected by a odor detection device (24).

Description

Catalyst deodorizer {CATALYTIC DEODORIZING DEVICE}

The present invention relates to a discharge type catalyst deodorization apparatus for exciting a catalyst by ultraviolet rays generated by discharge between discharge electrodes, thereby deodorizing indoor air and decomposing organic matter.

This type of so-called discharge catalyst deodorizing device is formed by sandwiching a catalyst between a pair or a plurality of electrodes constituting a discharge device, for example, as disclosed in Patent Literature 1, and generated by discharge between these electrodes. By exciting the catalyst with ultraviolet rays, the organic matter causing the odor in the gas is decomposed.

(Patent Document 1)

Japanese Patent Publication No. 2002-159829

The catalytic reaction apparatus as described above is not limited to the deodorizing apparatus, but is also used as the NOx decomposition apparatus and the exhaust gas treating apparatus. However, in Patent Literature 1, although the odor concentration in the air is lowered due to the photocatalytic reaction, The amount of ultraviolet rays generated is constant, resulting in high costs such as electricity bills. In addition, even when the odor concentration is high, since the amount of ultraviolet rays generated by the discharge is constant, it takes time to decompose the odor component. In addition, in order to generate ultraviolet rays, a high voltage is applied between the electrodes to perform corona discharge, and at the same time, insulation of the air is destroyed and ozone is generated. Since ozone is harmful in nature, a catalyst for decomposing ozone is required. However, even in a state where the odor concentration is low, the voltage applied between the electrodes is constant, which may cause the life of the ozone decomposition catalyst to decrease.

In addition, under the situation where the odor concentration of air to be deodorized changes, if the odor concentration in the air exceeds the amount of odor that can be decomposed by the photocatalyst excited by ultraviolet rays and ozone, the deodorizing effect is sufficient as an apparatus. I can't show it. For this reason, it is considered to have the necessary malodor decomposition ability so as to correspond to the maximum malodor concentration, but in this case, each component in the apparatus becomes large in capacity. In addition, if the amount of corona discharge is to be increased while the device capacity is suppressed, the amount of ozone generated together with the ultraviolet rays also increases at this time, and the ozone decomposition catalyst cannot be completely processed, and harmful ozone may be discharged into the air. have.

On the other hand, conventionally, in the case of removing odors of indoors, volatile organic compounds generated from building materials, furniture, and the like, indoor air is discharged to the outside by a ventilation fan, or a deodorizer equipped with activated carbon is employed. However, there is a problem that if the indoor air is discharged to the outside by the ventilation fan to remove odors or volatile organic compounds, if the room is cooled or heated, the effect is lost. In addition, energy loss is also great because air cooled or heated is discharged to the outside. On the other hand, the use of a deodorizer has a problem that it cannot be sufficiently coped with when a strong odor occurs temporarily or when the odor or volatile organic compounds are filled in the room while the deodorizer is stopped in a long period of absence. .

In view of the above problems, it is a first object of the present invention to provide a catalyst deodorization device capable of varying the amount of ultraviolet rays generated from the discharge device according to the odor concentration.

A second object of the present invention is to provide a catalyst deodorizing device capable of exhibiting a sufficient deodorizing effect even when the odor concentration of air to be deodorized changes.

Further, the third object of the present invention is that the efficiency of cooling and heating is less impaired, and even when a strong odor is generated temporarily or the odor or organic compound is filled in the room, sufficient deodorizing effect can be exhibited. A catalyst deodorization apparatus is provided.

1 is a longitudinal sectional view of a catalyst deodorization device showing a first embodiment of the present invention.

2 is a longitudinal sectional view of the catalyst deodorization apparatus seen from another angle of the first embodiment.

3 is a schematic configuration diagram of the photocatalytic reaction device of the first embodiment.

4 is a schematic explanatory diagram of a state in which the catalyst deodorizer of the first embodiment is installed in a pet toilet.

Fig. 5 is a block diagram showing the electrical configuration of the photocatalytic reaction device of the first embodiment.

FIG. 6 is a graph showing test results of odor concentrations of respective parts in the case where the catalyst deodorization device of the first embodiment is installed in a pet toilet. FIG.

7 is a flowchart showing the operation procedure of the discharge voltage variable circuit of the first embodiment.

Fig. 8 is a longitudinal sectional view of the catalyst deodorization device showing the second embodiment of the present invention.

Fig. 9 is a longitudinal sectional view of the catalyst deodorization device seen from another angle in the second embodiment.

Fig. 10 is a longitudinal sectional view of the catalyst deodorization device showing the third embodiment of the present invention.

Fig. 11 is a longitudinal sectional view of the catalyst deodorization device seen from another angle in the third embodiment.

<Explanation of symbols for the main parts of the drawings>

2: intake port 3: exhaust port

6: photocatalytic reaction device (reaction part) 7: adsorption filter (filter part)

8: ozone decomposition catalyst (decomposition catalyst) 12: photocatalyst (catalyst)

17: discharge device 41: outside air intake port (intake section)

45: outside air intake amount adjusting mechanism (adjustment section)

In the catalyst deodorizing device of claim 1 of the present invention, the excitation ratio of the catalyst to be deodorized can be changed by varying the discharge amount of the discharge device and the amount of ultraviolet light generated from the discharge device according to the odor concentration of the air. Therefore, when the odor concentration decreases, if the amount of ultraviolet rays generated from the discharge device is reduced accordingly, the cost such as unnecessary electricity bill can be saved. In addition, when the odor concentration increases, the odor component can be quickly decomposed by increasing the amount of ultraviolet rays generated from the discharge device. In addition, when the odor concentration decreases, the discharge amount of the discharge device decreases, and not only ultraviolet rays but also the amount of ozone generated decreases, so that the life of the ozone decomposition catalyst required to decompose ozone can be extended.

In the catalyst deodorizing apparatus of claim 2 of the present invention, a catalyst excited by ultraviolet rays and an excess of malodorous components exceeding the amount of malodors decomposed by ozone generated in the discharge device are temporarily adsorbed by the filter unit, It is gradually decomposed by this filter part. Therefore, even in a place where strong strong odor occurs, for example, in a bathroom, while exhibiting sufficient deodorizing ability, the odor component adsorbed by the filter is gradually decomposed afterwards, so that a good deodorizing function can always be maintained as a filter. have.

In the catalyst deodorizing apparatus of claim 3 of the present invention, if the odor component in the air is temporarily larger than the amount of supply ozone generated in the discharge device, the odor component which cannot be oxidized and decomposed entirely by this ozone remains in the filter portion, but the odor concentration is increased. In the process of deterioration, the odor component remaining in the filter part is gradually decomposed by the amount of supplied ozone. Therefore, it is possible to prevent the odor component from being left in the filter part by using ozone generated in the discharge device.

In the catalyst deodorization apparatus of claim 4 of the present invention, by using manganese dioxide as a component of the filter portion, the adsorption performance of the odor and the ozone decomposition performance can be combined.

In the catalyst deodorization apparatus of claim 5 of the present invention, when a strong odor is temporarily generated or a odor or organic compound is filled in the room, the control unit sufficiently receives gas and operates the apparatus and the ventilation at the same time. In a short time, indoor odor components and organic compounds can be effectively removed. On the contrary, when cooling and heating do not receive gas, and if the device is operated alone, odor components and organic compounds can be removed without ventilating during cooling and heating, thereby reducing the efficiency of cooling and heating caused by ventilation. And energy loss can be reduced.

In the catalyst deodorizing apparatus of claim 6 of the present invention, when a strong odor is temporarily generated or the odor or the organic compound is filled in the room, the odor or the organic compound can be adsorbed by the adsorbent, and the odor and It becomes possible to remove each component of an organic compound.

In the catalyst deodorization apparatus of claim 7 of the present invention, when activated carbon is used as the adsorbate, a relatively high adsorption force and an inexpensive adsorbate can be provided.

In the catalyst deodorization apparatus of claim 8 of the present invention, when a low temperature catalyst is used as the adsorbent, high adsorption performance is exhibited with respect to a specific volatile organic compound component such as formaldehyde, for example, and ozone generated by discharge is adsorbed. No water is consumed and high adsorption performance can be maintained for a long time.

In the catalyst deodorizing device of claim 9 of the present invention, it is possible to exhibit both inexpensive and large adsorption power, which is a feature of activated carbon, and high adsorption performance of a specific component over a long period, which is a feature of a low temperature catalyst. In addition, by unitizing the adsorbate, operations such as exchange can be easily performed.

EMBODIMENT OF THE INVENTION Hereinafter, each Example of the preferable catalyst deodorization apparatus in this invention is described based on an accompanying drawing.

1 to 4 show a first embodiment of the present invention. In Figs. 1 and 2 showing the overall configuration of the apparatus, reference numeral 1 denotes a housing forming the outer portion of the catalyst deodorization apparatus 21. In the example, it is comprised combining several resin molding parts. Reference numeral 2 is an air inlet formed on one side of the housing 1, 3 is an exhaust port formed on the surface of the housing 1, and an air passage communicating from the inlet 2 to the exhaust port 3 inside the housing 1. (4) is formed. Reference numeral 5 denotes a fan motor as a blowing means provided in the air passage 4 inside the housing 1, and in the air passage 4 on the exhaust side of the fan motor 5, a discharge type photocatalytic reaction device 6, The adsorption filter 7 and the ozone decomposition catalyst 8 as filters are arranged in this order. As a result, the air to be deodorized by the fan motor 5 sucked from the intake port 2 is removed from the photocatalytic reaction device 6, the adsorption filter 7, and the ozone decomposition catalyst on the exhaust side of the fan motor 5. Passed in the order of (8), it is discharged | emitted from the exhaust port 3 to the exterior.

Here, when the schematic structure of the photocatalytic reaction apparatus 6 is demonstrated based on FIG. 3, the code | symbol 11 is a high voltage generation power supply which produces the high voltage of several KV-several tens of KV, and 12, 12 are a pair of photocatalysts. In addition, the positive electrode 13 is disposed between the photocatalysts 12 and 12, and the photocatalysts 12 and 12 are sandwiched by the electrode 13, so that the opposite electrode serving as the negative electrode ( 14, 14) are arranged. In addition, the positive side lead terminal 15 of the high voltage generator 11 is connected to the electrode 13, and the negative side lead terminal 16 of the high voltage generator 11 is provided with the counter electrodes 14 and 14, respectively. The high voltage from the high voltage power supply 11 is applied between the electrode 13 and the counter electrodes 14 and 14. The ultraviolet light is generated by the discharge between the electrode 13 and the counter electrode 14 by the electrodes 13, the counter electrodes 14 and 14, and the high voltage power supply 11 to excite the photocatalyst 12. The discharge device 17 is configured.

1 and 2, the pretreatment filter 18 is provided at the inlet side of the fan motor 5 to remove dust and the like from the inlet port 2. Reference numeral 19 denotes a high voltage generator incorporating the high voltage generator 11 and the like, and these pretreatment filters 18 and the high voltage generator 19 are also disposed inside the housing 1, respectively. The adsorption filter 7 has the capability of adsorbing and decomposing the extra malodorous component which could not be completely decomposed and removed by the photocatalytic reaction device 6, and the main component thereof is preferably manganese dioxide (MnO ₂ ), in addition to activated carbon, Ferric oxide (Fe ₂ O ₂ ), nickel oxide (NiO), alumina (Al ₂ O ₃ ), and silica (SiO ₂ ) may be used. The reason for using manganese dioxide as the main component of the adsorption filter 7 is that manganese dioxide has not only the adsorption performance of odor but also the decomposition performance of ozone generated in the photocatalytic reaction device 6. In addition, the ozone decomposition catalyst 8 provided separately from the adsorption filter 7 decomposes and removes ozone generated in the photocatalytic reaction device 6.

4 shows an example in which the catalyst deodorization device 21 in the present embodiment is used. In Fig. 4, reference numeral 23 denotes a main body of a pet toilet, and a catalyst deodorizing device 21 is disposed at the odor outlet 24 of the main body 23 toward the intake port 2. Odor from dirt, such as dogs and cats, which are left unattended, is deodorized when passing through the catalyst deodorizer 21 from the odor outlet 24.

FIG. 5 is a block diagram showing the electrical configuration of the photocatalytic reaction device 6 shown in FIG. 3. In Fig. 5, reference numeral 31 denotes an operating power source for each block, and the voltage generated by this power supply circuit 31 is the discharge voltage variable circuit 32, the discharge circuit 33, and the odor detection device 34. Supplied to. Incidentally, reference numeral 34 denotes a odor detection device for detecting a odor concentration contained in the air received from the intake port 2, and when the odor detection device 34 sends information of the odor concentration to the discharge voltage variable circuit 32, the discharge occurs. The voltage variable circuit 32 determines the discharge voltage on the basis of the information, and the discharge circuit 33 at the rear end of the discharge amount to be applied between the electrode 13 and the counter electrodes 14 and 14, which are positive and negative electrodes. And the discharge circuit 33 generates the determined discharge voltage. In other words, the high voltage generation power supply 11 shown in FIG. 3 is constituted by the power supply 31, the discharge voltage variable circuit 32, and the discharge circuit 33.

In addition, the discharge amount here includes not only the peak voltage value of the high voltage pulse applied between the electrode 13 and the counter electrodes 14 and 14, but the width | variety and period of a high voltage pulse. The high voltage generation power supply 11 in this embodiment measures the discharge amount of the high voltage pulse applied between the electrode 13 and the counter electrodes 14 and 14 according to the odor concentration detected by the odor detection device 34. It is equipped with variable function.

Next, the operation of the above configuration will be explained. As for the air sucked into the air passage 4 in the housing 1 by the fan motor 5, dust or the like is prevented by the pretreatment filter 18. After it is removed, it is sent to the photocatalytic reaction device 6. In the photocatalytic reaction device 6, a high voltage pulse of several KV to several tens of KV is applied between the electrode 13 and the counter electrodes 14 and 14 from the power supply 11 for high voltage generation, whereby the electrode 13 and the counter electrode 14 are provided. , 14) and the insulation of the air flowing through the photocatalyst 12 are partially broken, and corona discharge occurs between the electrodes 13 and the counter electrodes 14, 14 on both sides of the photocatalyst 12. When corona discharge occurs, ultraviolet rays and ozone are generated, and the photocatalyst 12 is excited by the ultraviolet rays, and organic substances and the like, which are sources of odors in the air, are decomposed to a certain amount in accordance with the irradiation amount of ultraviolet rays. In addition, due to the oxidizing action of ozone generated at the same time, organic matters in the air are decomposed, and the deodorizing effect can be enhanced together with the reaction of the photocatalyst 12. However, in the gas phase, the reaction efficiency of ozone oxidation is low, so that most of the ozone is not consumed and is sent to the adsorption filter 7 together with the odor component.

The odor component that could not be removed entirely by the photocatalytic reaction device 6 is temporarily adsorbed by the adsorption filter 7 and gradually oxidatively decomposed by ozone supplied there, but the odor component which should be oxidatively decomposed is an adsorption filter. If it is less than the amount of ozone supplied to (7), no odor component accumulates in the adsorption filter 7, and the ozone remaining in the adsorption filter 7 is decomposed by the ozone decomposition catalyst 8 in the subsequent stage, and becomes oxygen and the odor component It is exhausted to the outside from the discharge port 3 with no air. On the other hand, when the malodorous component to be oxidized and decomposed in the adsorption filter 7 becomes larger than the supply ozone amount, the malodorous component which could not be completely decomposed by the ozone supplied to the adsorption filter 7 temporarily remains in the adsorption filter 7. . However, in the process of lowering the odor component to the normal concentration, it is gradually decomposed by the amount of ozone supplied to the adsorption filter 7, and finally the odor component does not remain in the adsorption filter 7.

In addition, in this embodiment, since manganese dioxide is used as a main component of the adsorption filter 7, not only does it adsorb the odor component which could not be removed by the photocatalytic reaction device 6, but also the ozone generated in the photocatalytic reaction device 6 It also has a decomposition performance. Therefore, even when there is almost no odor component, since the adsorption filter 7 exhibits high ozone decomposition performance and the corona discharge amount can be set high with the photocatalytic reaction device 6, in the photocatalytic reaction device 6 It is possible to improve the decomposition ability of the malodorous component.

As shown in FIG. 4, when the catalyst deodorization apparatus 21 of this Example is installed in the main body 23 of the pet toilet, the test result of the odor concentration of each part is shown. In FIG. 6, S1 represents a change over time in the odor concentration (ammonia concentration) in the main body 23 after leaving the dirt, and S2 similarly shows a change over time in the ammonia concentration in the exhaust port 3. It is shown. In addition, as a comparison, A1 represents the odor intensity 1 level (0.15 ppm) which can barely detect a odor, and A2 represents the level (9.2 ppm) of odor intensity 2 which feels a strong odor.

As is clear from the test results, the main body 23 of the pet toilet immediately generates a strong odor exceeding the level of the odor intensity 2 immediately after the dirt is put therein, but afterwards, the catalyst deodorizer 21 By the deodorizing effect by this, it turns out that odor concentration falls, and after one hour, odor concentration falls to about 2 ppm. In addition, on the exhaust port 3 side of the catalyst deodorizer 21, regardless of the degree of odor in the main body 23, the odor concentration can be suppressed to an extremely low level below the level of the odor intensity 1, and the living space of a person Even if it was installed inside, it did not feel the smell of the manure of a pet animal. In other words, the catalyst deodorization device 21 in the present embodiment shows that the adsorption decomposition ability of the malodorous component is extremely high.

Next, the operation of the discharge voltage variable circuit 32 shown in FIG. 5 will be described with reference to the flowchart of FIG. 7. When the operation as the catalyst deodorizer 21 is started, the fan motor 5 is driven to rotate, and air to be deodorized from the inlet port 2 through the air passage 4 in the housing 1 passes through the exhaust port 3. . Here, the odor detection device 34 detects the odor concentration of the air before deodorization, and the discharge voltage variable circuit 32 receives this detection information from time to time to determine how the odor concentration has changed (step S1). If it is determined that the odor concentration is rising, the process proceeds to step S2 and is transmitted from the discharge voltage variable circuit 32 to the discharge circuit 33 so as to raise the level of the discharge voltage from the previous time. On the contrary, in the case where it is determined that the odor concentration is decreasing, the flow advances to step S3 and is transmitted from the discharge voltage variable circuit 32 to the discharge circuit 33 so as to lower the level of the discharge voltage from the previous time. If there is no change in the odor concentration, the flow advances to step S4 to transfer the same level of the discharge voltage from the discharge voltage variable circuit 32 to the discharge circuit 33 as before. In either case, the discharge circuit 33 applies a pulsed high voltage between the electrode 13 and the counter electrodes 14 and 14 at the level of the discharge voltage transmitted from the discharge voltage variable circuit 32, and the photocatalyst ( Generates ultraviolet light at the place where 12) is placed.

In this way, in this embodiment, the amount of ultraviolet rays generated by the discharge device 17 and the ratio of the excitation of the photocatalyst 12 can be varied according to the odor concentration of the air taken in from the intake port 2, so that the odor is When the concentration is lowered, the peak level of the pulsed high voltage can be lowered, thereby reducing the cost of electricity bills and the like. In addition, when the odor concentration of the air taken in from the intake port 2 increases, the peak level of the pulsed high voltage can be increased accordingly to increase the rate of excitation of the photocatalyst 12, so that the odor component can be quickly decomposed. Can be. In addition, in the state where the odor concentration is low, since the amount of ozone generated together with the ultraviolet rays can be reduced by the discharge device 17, the life of the ozone decomposition catalyst 8 can be extended.

As described above, in the present embodiment, in the catalyst deodorization device which generates ultraviolet rays by the discharge device 17 to excite the photocatalyst 12 as a catalyst, the odor detection device 34 detects discharge according to the odor concentration detected. A high voltage power supply 11 having a discharge voltage variable circuit 32 for varying the discharge amount of the device 17 is provided.

In this case, the amount of ultraviolet rays generated from the discharge device 17 and the amount of ultraviolet rays generated from the discharge device 17 are varied according to the odor concentration of the air detected by the odor detection device 34, thereby reducing the amount of the photocatalyst 12. You can change the rate here. Therefore, when the odor concentration decreases, if the amount of ultraviolet rays generated from the discharge device 17 is reduced accordingly, the cost of unnecessary electricity bills and the like can be saved. In addition, when the odor concentration is increased, when the amount of ultraviolet rays generated from the discharge device 17 is increased, the odor component can be quickly decomposed. In addition, when the odor concentration decreases, the discharge amount of the discharge device 17 decreases, and not only the ultraviolet rays but also the amount of ozone generated decreases, so that the life of the ozone decomposition catalyst 8 necessary for decomposing ozone can be extended.

Moreover, in the present Example, in the catalyst deodorization apparatus provided with the photocatalytic reaction apparatus 6 as a reaction part which generate | occur | produces an ultraviolet-ray by a discharge apparatus, and excites a catalyst, the photocatalytic reaction apparatus 6 could not fully decompose | disassemble. The adsorption filter 7 as a filter part which adsorbs and decompose | disassembles excess odor component is provided separately.

In this case, the adsorption filter 7 temporarily adsorbs the photocatalyst 12 excited by ultraviolet rays and the excess malodorous component exceeding the amount of malodor that can be decomposed by ozone generated in the discharge device 17. This adsorption filter 7 gradually decomposes. Therefore, in the place where strong strong odors generate temporarily, for example, a toilet, while exhibiting sufficient deodorizing ability, the odor component adsorbed to the adsorption filter 7 gradually decomposes after that, and therefore the adsorption filter 7 As a result, a good deodorizing function can be maintained at all times.

In this case, as in this embodiment, for example, an ozone decomposition catalyst 8 is further provided as a decomposition catalyst for decomposing ozone generated from the discharge device 17, and the air to be deodorized is photocatalytic reaction device 6 ), The adsorption filter 7 and the ozone decomposition catalyst 8 are preferably configured to pass in order.

That is, if the malodorous component in the air which reaches the adsorption filter 7 temporarily exceeds the amount of supply ozone which generate | occur | produces in the discharge device 17, the malodorous component which was not able to oxidatively decompose | disassemble with this ozone is the adsorption filter 7 However, in the process of lowering the odor concentration, the odor component remaining in the adsorption filter 7 is gradually decomposed by the amount of supplied ozone. Therefore, the adsorption filter 7 is utilized by using ozone generated in the discharge device 17. The odor component can be prevented from being left on.

In addition, in this embodiment, by using manganese dioxide as a component of the adsorption filter 7, the adsorption performance of an odor and an ozone decomposition performance can be combined. Therefore, even when there is almost no odor component, since the adsorption filter 7 exhibits high ozone decomposition performance and can set a high corona discharge amount in the photocatalytic reaction device 6, in the photocatalytic reaction device 6 It is possible to improve the decomposition ability of the malodorous component.

Next, a second embodiment of the present invention will be described based on FIGS. 8 and 9. In addition, the same code | symbol is attached | subjected to the same part as the said 1st Example, and description of the common part is abbreviate | omitted since it overlaps.

In each of these drawings, the inlet port 2 for receiving outside air, which is a gas, is formed in the lower surface of the housing 1, and the fan motor 5 and the photocatalytic reaction device 6 are formed inside the housing 1. Plural number is installed in. In addition, the number of the fan motor 5 and the photocatalytic reaction device 6 is not specifically limited including another Example. In the present embodiment, the pretreatment filter 18, the fan motor 5, the photocatalytic reaction device 6, and the ozone decomposition catalyst 8 are formed in the first air passage 4 from the inlet port 2 to the exhaust port 3. Are placed in order. As a result, the air to be deodorized by the fan motor 5 sucked from the inlet port 2 is exhausted from the fan motor 5 in the order of the photocatalytic reaction device 6 and the ozone decomposition catalyst 8. It passes through and is discharged | emitted to the exterior from the exhaust port 3 formed in the upper side of one side of the housing 1.

On the other hand, at the upper side of the other side of the housing 1, an outside air intake port 41 having a tubular shape is formed, and from the outside air intake port 41 to the exhaust port 3 on the opposite side of the housing 1; In the second air path 42, a flat air intake amount adjusting mechanism 45 that rotates around the shaft portion 44 is installed to be opened and closed by manually operating the handle 43 protruding to the outside of the housing 1. do. Although not shown here, the outside air intake port 41 is formed outdoors, while the intake port 2 and the exhaust port 3 are formed on the indoor side, and the air intake port section is located close to the exhaust port 3. A ventilation fan is installed to exhaust the outdoor air sucked from the air from the exhaust port 3 into the room and to ventilate the room. In the present embodiment, the outside air intake air amount adjusting mechanism 45 can be manually operated by the handle 43, but the air intake air amount adjusting mechanism 45 may be opened and closed automatically in conjunction with the ventilation fan. In addition, about another structure, it is common to what is shown to 1st Example.

Next, the above-described configuration will be described. The volatile organic compounds in which the indoor odor component sucked from the intake port 2 by the fan motor 5, the organic solvent or adhesive used in building materials, furniture, etc. are volatilized. After the dust or the like is removed by the pretreatment filter 18, the air to be included is sent to the photocatalytic reaction device 6 in the air path 4 in the housing 1. In the photocatalytic reaction device 6, a high voltage pulse of several KV to several tens of KV is applied between the electrode 13 and the counter electrodes 14 and 14 from the power supply 11 for high voltage generation, whereby the electrode 13 and the counter electrode 14 , 14) and the insulation of the air flowing through the photocatalyst 12 are partially broken, and corona discharge occurs between the electrodes 13 and the counter electrodes 14, 14 on both sides of the photocatalyst 12. When a corona discharge occurs, ultraviolet rays and ozone are generated, and the photocatalyst 12 is excited by the ultraviolet rays, and odor components and volatile organic compounds, which are sources of odors in the air, are decomposed by the excited photocatalyst 12. do. In addition, the odor component and the like in the air are also decomposed by the oxidizing action of ozone generated at the same time.

Ozone generated in the discharge device 17, remaining odorous components, and the like flow downstream in the air passage 4, and the odorous components and the like are oxidatively decomposed by ozone in the air. In addition, ozone which has reached the ozone decomposition catalyst 8 is adsorbed thereon, and likewise oxidatively decomposes the malodorous component or the like which is to pass through the ozone decomposition catalyst 8. In this way, the air containing indoor odor components and volatile organic compounds is purified inside the catalyst deodorizing device 21 and exhausted from the exhaust port 3 to the room. In addition, the excess ozone is adsorbed by the ozone decomposition catalyst 8, reacts with each other, becomes oxygen, and is discharged from the exhaust port 3.

On the other hand, when the ventilation fan installed separately in the room is operated, the outside air intake air amount adjusting mechanism 45 is provided from the outside air intake port 41 formed in the housing 1 of the catalyst deodorizer 21. It passes through the 2nd air path 42, and is discharged | emitted from the exhaust port 3 to the room, and air of the room is ventilated. In this case, the outside air intake amount adjusting mechanism 45 can be rotated between the fully closed position (the position of the solid line shown in FIG. 9) and the fully open position (the position of the broken line shown in FIG. 9) by manual operation of the handle 43. As a result, the amount of air passing through the second air path 42 can be arbitrarily adjusted and varied. Therefore, when a strong odor occurs temporarily or the room is closed for a long time, and the odor and volatile organic compounds are filled to the room, an outside air intake amount adjusting mechanism (in order to remove odor and volatile organic compounds in a short period of time) 45) is rotated to the fully open position, the ventilation fan is operated, and the maximum amount of air is taken into the room from the second air path 42, and the room is quickly ventilated. At the same time, when the catalyst deodorizer 21 is operated to adsorb and remove the malodorous components and volatile organic compounds as described above, the indoor air can be purified in a short time.

In addition, while cooling or heating the room with an air conditioner (not shown) or the like, in order to avoid the loss of energy for discharging the indoor air to the outside as much as possible, the outside air intake amount adjusting mechanism 45 is rotated to a completely closed position to operate the ventilation fan. Is stopped, and only the catalyst deodorizer 21 is operated. In this way, the indoor air can be purified by the catalyst deodorizer 21 while circulating the indoor air.

As described above, in the present embodiment, the photocatalytic reaction device 6 serving as a reaction part for generating ultraviolet rays by the discharge device 17 to excite the photocatalyst 12 as a catalyst is provided in the first air path 4 as the air path. In the catalyst deodorization apparatus 21 which deodorizes the air from the intake port 2 in the 1st air path 4 and discharges it from the exhaust port 3, the outside air intake port as an intake part which sucks outside air and discharges it to the exhaust port 3 The unit 41 and the outside air intake amount adjusting mechanism 45 as an adjusting unit for adjusting the intake amount of the outside air are provided.

In this case, only when the strong odor is temporarily generated or the volatile organic compound, which is an odor or an organic compound, is filled in the room, the outside air intake amount adjusting mechanism 45 allows the outside air intake port 41 to sufficiently receive the outside air, By operating the catalyst deodorizer 21 and ventilation at the same time, it is possible to effectively remove the odor components and volatile organic compounds in the room in a short time. On the contrary, when cooling or heating does not take in outside air from the outside air intake port 41, and operation is performed by the catalyst deodorizer 21 alone, odor components and volatile organic compounds can be removed without ventilation during cooling or heating. It can prevent the cooling and heating efficiency fall by ventilation, and can reduce energy loss.

Next, a third embodiment of the present invention will be described based on FIGS. 10 and 11. In addition, the same code | symbol is attached | subjected to the same part as the said 1st Example or 2nd Example, and description of the common part is abbreviate | omitted since it overlaps.

The present embodiment differs from the second embodiment in that the adsorbent unit 51 corresponding to the adsorption unit is installed in the air passage 4 in a detachable manner. The adsorbent unit 51 is composed of activated carbon, a low temperature catalyst, or a combination of both. Since the adsorbent unit 51 adsorbs the strong odor component temporarily generated, and part of it is decomposed by ozone generated by the discharge device 17, the adsorbent unit 51 is provided with an adsorbent unit 51 to provide a deodorizing function. Improvement is further planned. In addition, the structure other than that is common to 2nd Example.

Also in this embodiment, since the outside air intake port portion 41 serving as the outside air intake portion for sucking the outside air and exhausting it to the exhaust port 3 and the outside air intake amount adjusting mechanism 45 as the adjustment unit for adjusting the intake amount of the outside air, Only when the strong odor is temporarily generated or the odor or the volatile organic compound is filled in the room, the outside air intake amount adjusting mechanism 45 is allowed to sufficiently receive the outside air from the outside air intake port 41, and the catalyst deodorizer 21 By operating both the and ventilation at the same time, it is possible to effectively remove the odor components and volatile organic compounds in the room in a short time. On the contrary, when cooling or heating does not take in outside air from the outside air intake port 41, and operation is performed by the catalyst deodorizer 21 alone, odor components and volatile organic compounds can be removed without ventilation during cooling or heating. It can prevent the cooling and heating efficiency fall by ventilation, and can reduce energy loss.

In this embodiment, the adsorbent unit 51 serving as an adsorbate for adsorbing odors and volatile organic compounds in the air passage 4 is provided.

In this case, when a strong odor is generated temporarily or when a odor or volatile organic compound is filled in the room, the odor or volatile organic compound can be adsorbed by the adsorbent unit 51, and the odor or volatile organic compound can be adsorbed in a short time. It becomes possible to remove each component of.

In this case, when activated carbon is used as the adsorbate constituting the adsorbent unit 51, an adsorbate having a relatively high adsorption force and a low cost can be provided.

In addition, when a low temperature catalyst is used as the adsorbent, high adsorption performance is exhibited with respect to specific organic volatile compound components such as formaldehyde, for example, and ozone generated by discharge does not consume the adsorbate, High adsorption performance can be maintained throughout.

In particular, in the present embodiment, the adsorbent is composed of an adsorbent unit 51 as a detachable adsorbent composed of a combination of activated carbon and a low temperature catalyst. This makes it possible to exhibit both inexpensive and large adsorption power, which is characteristic of activated carbon, and high adsorption performance of certain components over a long period of time, which is characteristic of low temperature catalysts. In addition, by uniting the adsorbent, operations such as exchange can be easily performed.

In addition, this invention is not limited to the said Example, A change is suitably within the range of the summary of this invention. For example, you may comprise combining the characteristic part in each said Example.

According to the catalyst deodorizer of claim 1 of the present invention, the amount of ultraviolet rays generated from the discharge device can be varied according to the odor concentration, and when the odor concentration is low, the amount of ozone generated from the discharge device together with the ultraviolet rays can be reduced. have.

According to the catalyst deodorizing apparatus of claim 2 of the present invention, even when the odor concentration of air to be deodorized is changed, a sufficient deodorizing effect can be exerted, and the deodorizing function can always be maintained as a filter.

According to the catalyst deodorizer of claim 3 of the present invention, it is possible to prevent the odor component from being left in the filter by using ozone generated in the discharge device.

According to the catalyst deodorization apparatus of claim 4 of the present invention, the filter can have both an adsorption performance of odor and an ozone decomposition performance.

According to the catalyst deodorizing apparatus of claim 5, the deodorizing effect of the catalyst is less likely to be impaired in cooling and heating, and even when a strong odor is generated temporarily or a odor or an organic compound is filled in the room. It becomes possible.

According to the catalyst deodorization apparatus of claim 6 of the present invention, it becomes possible to remove odors and components of organic compounds in a short time by using an adsorbate.

According to the catalyst deodorizing apparatus of claim 7 of the present invention, a relatively high adsorption force and an inexpensive adsorbate can be provided.

According to the catalyst deodorization apparatus of claim 8 of the present invention, it is possible to maintain high adsorption performance over a long period of time for a specific component.

According to the catalyst deodorizing apparatus of claim 9 of the present invention, the characteristics of both activated carbon and the low temperature catalyst can be utilized, and further, operations such as exchange can be easily performed by the unitized adsorbate.

Claims (9)

A catalyst deodorizer which generates ultraviolet rays by a discharge device and excites a catalyst, wherein the amount of discharge is varied in accordance with odor. A catalyst deodorizer which generates ultraviolet rays by a discharge device and includes a filter portion for adsorbing and decomposing malodors. The catalyst deodorizing apparatus according to claim 2, further comprising a decomposition catalyst for decomposing and configured to allow gas to pass through the reaction section, the filter section, and the decomposition catalyst. The catalyst deodorizing device according to claim 2, wherein manganese dioxide is used as a component of the filter part. A catalyst deodorization device which generates ultraviolet rays by a discharge device, includes a reaction section in a wind path, and deodorizes a gas and discharges it from an exhaust port, wherein the suction part which sucks gas and discharges it to the exhaust port and adjusts the amount of the gas. A catalyst deodorization device comprising an adjustment unit. The catalyst deodorization apparatus according to claim 5, wherein an adsorbate for adsorbing malodors or organic compounds is provided in the air passage. 7. The catalyst deodorization apparatus according to claim 6, wherein the adsorbate is made of activated carbon. 7. The catalyst deodorization apparatus according to claim 6, wherein the adsorbate is a low temperature catalyst. The catalyst deodorization apparatus according to claim 6, wherein the adsorbate is an adsorbent composed of activated carbon and a low temperature catalyst.