JP2003080022A - Deodorization apparatus using mixture of adsorbing material with photocatalyst - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that malodorous gas is discharged to the outside of a deodorization apparatus as it is treated unsatisfactorily and an adsorbing material is apt to become a break through state (adsorption-saturated state) when only one deodorization unit provided with a photocatalyst is installed in the deodorization apparatus. SOLUTION: The mixture of the adsorbing material with the photocatalyst is incorporated in the deodorization unit 13 and a plurality of the units 13 are installed in this deodorization apparatus. A treatment step and a regeneration step are carried out repeatedly as a working cycle of each unit 13. At the treatment step, malodorous gas is adsorbed on each unit 13 and is decomposed. At the regeneration step, the unit 13 is regenerated by decomposing the adsorbed malodorous gas. The treated gas discharged from one unit 13 during the treatment step is made to flow into another unit 13 during the regeneration step. The treatment step and the regeneration step to be performed on each unit 13 are changed to one after the other every specified time according to a timer 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing device using a mixture of an adsorbent for adsorbing malodorous gas and a photocatalyst for decomposing malodorous gas, and more particularly to a technique for improving the capability of decomposing malodorous gas. Regarding

[0002]

2. Description of the Related Art Hitherto, there has been known a deodorizing device for performing a deodorizing process using a photocatalyst in order to remove a bad odor contained in exhaust gas from a garbage processor or the like. Such a deodorizing device,
The deodorizing unit provided with a photocatalyst is provided, and the deodorizing unit contains, for example, a filter to which particulate titanium dioxide and activated carbon are attached. And
The odorous gas is adsorbed and fixed by activated carbon which is an adsorbent, and the odorous gas is decomposed by titanium dioxide which is a photocatalyst.

[0003]

In the conventional deodorizing device, only one deodorizing unit equipped with a photocatalyst is provided in the device, and the processing of the malodorous gas flowing into the deodorizing device is performed by the photocatalytic unit. You only have to pass once to finish.
On the other hand, the photocatalyst has a strong oxidizing power but a slow decomposition rate. Therefore, if there is a large variation in the amount of the malodorous gas that flows into the deodorizing device (inflow amount per unit time), the malodorous gas is exhausted from the deodorizing device while being insufficiently treated. Also, with only one unit, the adsorbent easily breaks through (adsorption saturation), and under conditions of use where exhaust gas containing malodorous gas is continuously discharged, such as a garbage processor, exhaust gas that is not sufficiently treated Will be discharged, which is inappropriate.

[0004]

The problems to be solved by the present invention are as described above, and the means for solving the problems will be described below.

That is, as described in claim 1, there is provided a deodorizing unit, wherein the deodorizing unit contains a mixture of an adsorbent and a photocatalyst. The deodorizing unit is provided with a plurality of deodorizing units, and the operation of each deodorizing unit is performed. The cycle includes a treatment process and a regeneration process, and both processes are configured to be repeated.Each deodorizing unit adsorbs malodorous gas in the treatment process and decomposes malodorous gas, and in the regeneration process, the malodorous substance adsorbed. The gas is decomposed and the unit is regenerated.

According to a second aspect of the present invention, the processing gas discharged from the deodorizing unit in the processing step is made to flow into the deodorizing unit in the regeneration step.

As described in claim 3, in each deodorizing unit, a processing step and a regeneration step are switched by a timer at regular intervals.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, referring to FIG. 1, a food waste processing machine 1 to which a deodorizing device 10 according to an embodiment of the present invention is applied.
This will be described with reference to FIG. FIG. 1 is a front sectional view of the garbage processing machine, and FIG. 2 is a side view of the same. As shown in FIGS. 1 and 2, the garbage treatment device 1 has a configuration in which hot water supplied from a cogeneration device or the like is used as a heat source for raising the temperature in the treatment tank 2. It is composed of a casing 3 forming an "L" shape, and can be freely moved by the casters 4, 4 or wheels mounted on the lower surface.

The processing tank 2 is a tank of a substantially "U" shape in a side view (FIG. 2) supported by frames 5 and 5 (FIG. 1) provided upright from the bottom plate of the casing 3, and is placed on the upper front side. Mouth 8
Is opened, and the raw dust input lid 7 provided on the front of the raw dust processing machine 1 is opened to allow the input of raw dust and decomposed base material (processed material). An operation panel 46, which is an operation means, is provided on the front surface of the casing 3 near the lower part of the garbage throwing lid 7, and the user starts / stops the disassembling process and inputs the type / feeding amount of the garbage. And so on. Further, below the operation panel 46, a controller 70 as a control means is provided, and controls the drive of each device constituting the garbage processing machine 1 on the basis of a command input on the operation panel 46. .

In the processing tank 2, a rotary shaft 6c having a plurality of stirring blades 6d protruding in the radial direction is laterally provided, and the rotary shaft 6c is provided.
By a stirring motor 6a that is distributed to the side of the processing tank 2.
It is configured to be driven via the gear box 6b. By periodically rotating the stirring blade 6d clockwise / counterclockwise in a side view, the contents such as the garbage and the decomposition base material are stirred so that the decomposition treatment by the aerobic fermenting bacteria is performed. Has become.

The operation of the stirring motor 6a is controlled by the controller 70. For more details,
In the "stirring mode", in which the stirring motor 6a stirs the processed material to decompose the processing object, the stirring motor 6a operates so that the rotating direction of the stirring blade 6d is switched clockwise / counterclockwise at regular intervals. On the other hand, in the "discharging mode" in which the stirring motor 6a discharges the processed material after the decomposition processing, the stirring blade 6d rotates in one direction (in the present embodiment, in the right side view shown in FIG. 2). It works by rotating it clockwise.

An exhaust fan 15 is provided above the processing tank 2. Further, an opening 2a is formed on the upper surface of the processing tank 2, and the air in the processing tank 2 is discharged from the opening 2a by driving the exhaust fan 15. In addition, the opening 2 a of the processing tank 2 and the exhaust fan 15
An exhaust filter 16 is provided between and to prevent dust generated from the contents in the processing tank 2 from being discharged to the outside of the garbage processing machine 1. Similarly, above the processing tank 2, a deodorizing device 10 according to an embodiment of the present invention is arranged beside the exhaust fan 15. The deodorizing device 10, which will be described in detail later, is a device that decomposes the malodorous gas contained in the exhaust gas from the processing tank 2 into a clean gas. The exhaust fan 15 and the deodorizing device 10 include an exhaust pipe 11
The exhaust gas in the processing tank 2 is decomposed by the deodorizing device 10 by being connected so that the exhaust gas communicates with each other. Also,
An exhaust port 3a is opened at the top of the casing 3. The deodorizing device 10 and the exhaust port 3a are connected by the exhaust pipe 12,
Exhaust gas is connected so as to communicate with each other, and the exhaust port 3a
As a result, the exhaust gas processed into the clean gas by the deodorizing device 10 is discharged to the outside of the garbage processing machine 1.

Below the treatment tank 2, a hot water jacket 18 is provided.
Are arranged. The hot water jacket 18 is a means for supplying heat to the treatment tank 2 and promotes decomposition treatment of raw garbage and decomposition base material in the treatment tank 2. As shown in FIG. 2, the hot water jacket 18 is a closed container having a shape that covers the outer surface of the circular arc portion of the bottom portion of the “U” of the processing tank 2, that is, a semicircular shape in side view, and the lower surface thereof. It is supported by the installation legs 19 and 19 standing upright from the bottom surface of the casing 3. Hot water from a cogeneration device or the like is supplied to the hot water jacket 18 from a hot water inlet header 52 provided on the lower side surface of the casing 3 through a hot water supply pipe 53, and heat of the hot water is supplied to the treatment tank 2 Heat is exchanged with the processed material on the inner surface of the
The water is returned from the hot water outlet header 55 to the cogeneration system through the return pipe 54. That is, hot water is circulated between the cogeneration device and the hot water jacket 18.

In the hot water supply pipe 53, as shown in FIG.
A motor valve 57 whose valve is opened and closed by a valve opening / closing actuator 56 is provided. The operation of the valve opening / closing actuator 56 is controlled by the controller 70 (FIG. 2). The motor valve 57 is for adjusting the supply amount of hot water, and in the present embodiment, the motor valve 57 is provided inside the garbage processing machine 1. However, the motor valve 57 is provided in the pipe between the cogeneration system or the cogeneration system. It may be configured to be provided in the generation device. In addition, processing tank 2
The heat source is not limited to the hot water jacket 18 using the hot water supply from the cogeneration device, but may be in the form of heat supply using an electric heater.

A discharge duct 43 is provided on the side portion of the processing tank 2 and on the side surface on the side of the stirring motor 6a and in front of the rotary shaft 6c. A discharge mechanism 40 is provided in the discharge duct 43, and by the discharge mechanism 40,
The contents processed in the processing tank 2 are discharged from the processing tank 2. In the processing tank 2, an opening is formed in the side wall on the exhaust duct 43 side so as to communicate with the exhaust duct 43.
A discharge plate 44 that can open and close the opening is rotatably provided on the side wall of the processing tank 2. The rotation support shaft of the discharge plate 44 is provided at the lower end of the discharge plate 44. The discharge plate 44 forms a part of the side surface of the processing tank 2 in a state where the discharge mechanism 40 does not work, that is, in the “stirring mode”.

The discharge mechanism 40 includes an opening / closing motor 41,
A link 42 for swinging the opening / closing plate 44 by driving the opening / closing motor 41 is provided. In the “discharging mode”, the upper end of the discharging plate 44 is tilted to the inside of the processing tank 2 and the opening is formed in the side wall of the processing tank 2 through the opening.
The processing tank 2 and the discharge duct 43 communicate with each other. Then, the decomposed material scraped up by the stirring blade 6d is placed on the inclined discharge plate 44, and then slides on the discharge plate 44 to be guided into the discharge duct 43. Below the discharge duct 43, a recovery tray 45 with casters is arranged so as to continuously recover the processed material introduced into the discharge duct 43.

The deodorizing device 10 which is an embodiment of the present invention will be described below. In the treatment tank 2, a malodorous gas such as ammonia, amines, hydrogen sulfide, and mercaptan is generated as the food waste and the decomposition base material are decomposed. These malodorous gases are contained in the exhaust gas discharged from the processing tank 2. The deodorizing device 10 has a deodorizing filter 13 built-in in order to decompose these malodorous gases contained in the exhaust gas.
3 is provided.

The deodorizing unit 13 will be described with reference to FIGS. FIG. 3 is a partial cross-sectional plan view showing the configuration of the deodorizing unit 13A, and FIG. 4 is a perspective view showing a part of the deodorizing filter 14. As shown in FIG. 3, the casing of the deodorizing unit 13 is provided with an exhaust gas inflow port 13a and an exhaust gas outlet 13b. A light source 17 is arranged between the inflow port 13a and the discharge port 13b, and deodorizing filters 14 and 14 are arranged so as to face each other with the light source 17 as the center. The light source 17 is means for causing a photocatalyst (titanium dioxide) provided on the deodorizing filter 14 to cause a photocatalytic reaction. The deodorizing filters 14 and 14 are respectively arranged so as to block the exhaust gas passage from the inflow port 13a to the exhaust port 13b, and the exhaust gas flowing into the deodorizing unit 13 is
After passing through the two deodorizing filters 14, 14, they are discharged to the outside of the deodorizing unit 13.

The deodorizing filter 14 used in the deodorizing device 10 of the present embodiment is a filter formed of glass fibers having mixed particles (mixture) in which particulate activated carbon and titanium dioxide are mixed. . Activated carbon is a porous substance and is an adsorbent capable of adsorbing the above-mentioned malodorous gas. Further, titanium dioxide is a photocatalyst and has a function of decomposing the malodorous gas under ultraviolet rays. In addition, in order to prevent the glass fiber as the base material from being deteriorated by titanium dioxide as the photocatalyst, silica is mixed into the mixed particles to act as a carrier for the photocatalyst.

With the above structure, the deodorizing filter 14 firstly adsorbs the malodorous gas on the filter surface by the action of the activated carbon as the adsorbent. Second, by the action of titanium dioxide, which is a photocatalyst, the malodorous gas adsorbed and fixed on activated carbon or the malodorous gas that comes into contact with the filter surface (titanium dioxide particles) is decomposed by oxidation to eliminate odor. Chemically change to gas. At this time, in order to cause a photocatalytic reaction on the surface of the titanium dioxide particles, light is applied to the surface of the deodorizing filter 14 by the light source 17. By the photocatalytic reaction, the malodorous gas is decomposed.

The odorous gas adsorbent is not limited to activated carbon, but may be ceramics, apatite, or zeolite (zeolite). Since these adsorbents can also be processed into particles, it is possible to form a deodorizing filter by forming mixed particles of the adsorbent and the photocatalyst in place of the activated carbon, and adhering the mixed particles to the filter surface. is there. As the photocatalyst, there are organic polymer photocatalysts such as polyparaphenylene and metal oxides other than titanium dioxide. Some metal oxides such as zinc oxide and tungsten oxide have a stronger photocatalytic action than titanium dioxide, but they are not suitable for use because they dissolve in water vapor (in an aqueous solution) or are toxic. Often difficult, titanium dioxide is suitable as a photocatalyst.

The deodorizing filter 14 applied to this embodiment is
As shown in FIG. 4, a partially enlarged view is a honeycomb filter in which openings are formed in a honeycomb shape, and the mixed particles of activated carbon and titanium dioxide are adhered to the surface of the filter. The deodorizing filter for absorbing and decomposing malodorous gas is not limited to this material configuration. For example, the base material of the photocatalyst may be a fluororesin that allows water vapor to pass therethrough instead of the glass fiber, and a filter formed in a sheet shape may be configured. The above-mentioned mixed particles (activated carbon and titanium dioxide) are attached to the surface of the filter formed into a sheet.

The means for adsorbing and decomposing the malodorous gas is not limited to the deodorizing unit incorporating the deodorizing filter. For example, the mixed particles (activated carbon and titanium dioxide) may be attached to the surface of the glass beads to form deodorizing beads, and the deodorizing beads may be filled in the case (in the deodorizing unit).

The treatment process and the regeneration process provided in the work cycle of the deodorizing unit 13 will be described. As described above, the deodorizing filter 14 built in the deodorizing unit 13 is provided with activated carbon as an adsorbent and titanium dioxide as a photocatalyst. Here, both activated carbon and titanium dioxide are attached to the surface of the filter, and the attachment area and the attachment amount are proportional to each other. In the above, when the activated carbon and the titanium dioxide are compared per the adhered area, the adsorption rate of the activated carbon is higher than the treatment rate of the titanium dioxide. Therefore, the short-term deodorizing ability is higher when the filter provided with only activated carbon is used than the mixture filter of activated carbon and titanium dioxide. Although activated carbon alone cannot decompose malodorous gas (deodorizing gas),
It is possible to prevent the discharge of malodorous gas to the outside. It is because whether or not the malodorous gas is decomposed is not a problem in terms of preventing the malodorous gas from being discharged to the outside. That is, in the mixed particles, the short-term deodorizing ability of the deodorizing unit 13 can be improved as the mixed amount of the activated carbon particles is increased as compared with the titanium dioxide particles. On the other hand, as the amount of titanium dioxide mixed in the mixed particles decreases, the ability to decompose malodorous gas decreases. This means a state in which the ability to regenerate the activated carbon that has adsorbed a malodorous gas and has a reduced adsorption ability has been reduced, which leads to a reduction in the deodorizing ability in the long term. To some extent, short-term capacity building and long-term capacity maintenance are in a conflicting relationship. In addition, the above-mentioned short-term ability improvement and long-term ability maintenance means
This is an effect under operating conditions in which exhaust gas containing malodorous gas is continuously discharged, such as a garbage processor. Under a use condition in which a sufficient exhaust pause time is provided, the filter (adsorbent) is automatically regenerated if it is a deodorizing filter containing a photocatalyst. Therefore, under such usage conditions, even a filter mainly composed of an adsorbent can be used while maintaining its performance for a long period of time without replacement of the filter.

In the present invention, the rate of adsorption of the malodorous gas by the whole adsorbent contained in the deodorizing unit 13 is higher than the rate of decomposition of the malodorous gas by the entire photocatalyst also incorporated therein.
The mixing ratio of the adsorbent and the photocatalyst is determined so as to be fast. As described above, the adsorption rate of activated carbon is faster than the treatment rate of titanium dioxide in terms of the area of adhesion to the filter. Even if there is such a difference, if the amount of the photocatalyst is greatly increased compared to the adsorbent, the decomposition rate of the malodorous gas by the photocatalyst as a whole is
It is possible to speed up. And, as a person responsible for preventing the discharge of the malodorous gas to the outside, the activated carbon which is the adsorbent is mainly used, so that the malodorous gas is suddenly emitted to the deodorizing unit 13,
In addition to improving the ability to handle short-term increases, it also has the ability to regenerate the adsorbent.

Therefore, when an amount of malodorous gas that exceeds the processing capacity of the deodorizing unit 13 flows into the deodorizing unit 13, first, the malodorous gas is adsorbed by the adsorbent, and the adsorbent passes through (adsorbs). Saturate). At this time, a decomposition treatment with a photocatalyst is also performed. However, due to the above mixing ratio, the adsorption rate by the adsorbent is faster than the decomposition rate by the photocatalyst, so that the malodorous gas continues to be adsorbed by the adsorbent. Therefore, if a sufficient amount of malodorous gas continues to flow in, the adsorbent will eventually break through. In the present invention, the process in which the deodorizing process of the exhaust gas is mainly performed by the adsorbent while the deodorizing process of the malodorous gas is performed by the photocatalyst is referred to as the process step of the deodorizing unit 13 in the present invention.

In order to regenerate the deodorizing ability of the deodorizing unit 13, it is necessary to decompose the malodorous gas accumulated in the breakthrough activated carbon. The deodorizing unit 13 can be regenerated by blocking the inflow of the malodorous gas into the deodorizing unit 13 in a state where the activated carbon has passed through for a certain period of time. This is because during this time (the above-mentioned fixed time), the titanium dioxide as the photocatalyst is decomposed by the ultraviolet rays from the light source 17 to decompose the malodorous gas accumulated in the activated carbon, and the activated carbon is regenerated. Note that in reproducing the deodorizing ability of the deodorizing unit 13, it is not always necessary to block the inflow of the malodorous gas.
The amount (the amount per unit time) of the malodorous gas flowing into the deodorizing unit 13 may be equal to or less than the decomposition treatment capacity of titanium dioxide which is the photocatalyst. In this case, since the decomposition process is performed while the malodorous gas flows in, the time required to regenerate the deodorizing unit 13 is increased as compared with the case where the malodorous gas is blocked. As described above, the process of decomposing the malodorous gas mainly by the photocatalyst while the malodorous gas is adsorbed by the adsorbent in some cases is referred to as a regeneration process of the deodorizing unit 13 in the present invention.

In the present invention, the deodorizing device 10 is provided with a plurality of deodorizing units 13, and the processing cycle and the regenerating step described above are provided in the work cycle of each deodorizing unit 13 so that both steps are repeated. ing. Therefore, of the plurality of deodorizing units, the deodorizing unit 13 in the processing step can perform the deodorizing process of the malodorous gas, and the deodorizing unit in the regenerating step can regenerate the deodorizing ability. The deodorizing ability is maintained even in the long term, and a stable deodorizing effect can be obtained.

The exhaust circuit 20 provided in the deodorizing device 10 will be described with reference to FIG. FIG. 5 is a circuit diagram showing the configuration of the exhaust circuit 20. As shown in FIG. 5, an exhaust gas inflow port 10a and an exhaust gas exhaust port 10b are formed in the casing of the deodorizing device 10. Inlet 10
a is connected to the exhaust pipe 11 on the inflow side, and the exhaust port 10
b and the exhaust pipe 12 on the discharge side are connected. And
Inside the deodorizing device 10, there are an inlet 10a and an outlet 10b.
An exhaust circuit 20 including the deodorizing units 13 and 13 is formed with both ends of and. The exhaust circuit 20 includes two deodorizing units 13 and 13, which are connected by using pipes, valves, and the like. The working cycle of each unit is configured such that when one of the two deodorizing units 13 and 13 is in the treatment process, the other is in the regeneration process. In addition, below, when it is necessary to specify each of the two deodorizing units 13 and 13 provided in the deodorizing device 10, one of them is deodorizing unit 13A.
And the other is the deodorizing unit 13B to be distinguished.

The exhaust circuit 20 is operated by switching the five valves 21, 22, 23, 24, 25 provided on the circuit.
The exhaust path from the inflow port 10a to the exhaust port 10b can be changed. The valves 21, 22, ... Are directional control valves, and may be electromagnetic control or hydraulic control. Then, the controller 70 controls the switching operation of these valves. The exhaust path that can be formed from the inflow port 10a to the exhaust port 10b under the control of the controller 70 is only two paths in this embodiment. The first exhaust path is, as shown in FIG.
Inflow port 10a → deodorizing unit 13A → deodorizing unit 13
The route is from B to the discharge port 10b. The second exhaust path is, as shown in FIG. 7, an inflow port 10a → the deodorizing unit 1
The route is 3B → deodorizing unit 13A → exhaust port 10b. In other words, by changing the exhaust path, the deodorizing unit 1
The passing order of 3A and 13B is changed.

The exhaust circuit 20 whose exhaust path can be changed as described above will be specifically described with reference to FIGS. 5 to 7. FIG. 6 is a circuit diagram showing the exhaust circuit 20 in which the first exhaust path is formed, and FIG. 7 is a circuit diagram showing the exhaust circuit 20 in which the second exhaust path is formed. Below, it demonstrates according to the passage order of the exhaust gas in a 1st exhaust path. One end of the pipe 30 is connected to the inflow port 10a, and the other end of the pipe 31 is connected to the valve 21. Valve 21
In addition to the pipe 30, the pipe 31 connected to the deodorization unit 13A side and the pipe 3 connected to the deodorization unit 13B side
2 and are connected. When the controller 70 determines the formation of the first exhaust path, the controller 70 directs the pipe 30 and the pipe 31 toward the valve 21 to connect the pipe 3 to the valve 21.
For 2, the control to cut off from the other two pipes (pipes 30 and 31) is commanded. When the controller 70 determines the formation of the second exhaust path, the pipe 30 and the pipe 32 are communicated with each other, and the pipe 31 is disconnected from the communicating pipes 30 and 32. Here, the controller 70 selects switching from the first exhaust path to the second exhaust path and vice versa based on a determination criterion described later. Further, three pipes are connected to the valves 22, 23, ... Other than the valve 21, and the two pipes are connected to each other based on a command from the controller 70, and the remaining one pipe is connected. , It is cut off from the two pipes in communication.

At the other end (opposite the valve 21 side) of the pipe 31,
The valve 22 is connected. The valve 22 has a pipe 3
In addition to 1, the pipe 33 that goes to the deodorizing unit 13A and the pipe 34 are connected. The pipe 34 is a pipe that connects the deodorizing units 13A and 13B when the second exhaust path is formed. When the first exhaust path is formed, the pipes 31 and 33 communicate with each other and the pipe 34 is cut off from the two communicating pipes. The pipe 33 is the deodorizing unit 1
The deodorizing unit 1 is connected to the inflow port 13a of 3A.
The discharge port 13b of 3A is connected to the pipe 35. The exhaust gas from which the malodorous gas is completely or partially removed is discharged to the pipe 35 by the deodorizing unit 13A.

The other end of the pipe 35 (the anti-deodorization unit 13A
The valve 23 is connected to the side). In the valve 23, in addition to the pipe 35, a pipe 36 directed to the deodorizing unit 13B and a pipe 37 directed to the discharge port 10b of the deodorizing device 10.
And are connected. When the first exhaust path is formed, the pipes 35 and 36 communicate with each other, and the pipe 37 is cut off from the two communicating pipes.

The other end of the valve 36 (opposite the valve 23 side),
The other end (opposite the valve 21 side) of the pipe 32 is the valve 2
4 is connected. The valve 24 has pipes 32 and 36.
Besides, a pipe 38 is connected. The pipe 38 is a pipe to the deodorizing unit 13B. Then, when the first exhaust path is formed, the pipes 36 and 38 communicate with each other, and the pipe 32 is cut off from the two communicating pipes. The pipe 38 is connected to the inflow port 13a of the deodorizing unit 13B, and the discharge port 13b of the deodorizing unit 13B is connected to the pipe 39. The pipe 38 has a deodorizing unit 13A.
The exhaust gas from which the malodorous gas is completely or partially removed flows in. Then, the exhaust gas that has been further deodorized by the deodorizing unit 13B is discharged to the pipe 39.

The other end of the pipe 39 (the anti-deodorization unit 13B
The valve 25 is connected to the side). In addition to the pipe 39, the valve 25 is connected to the pipe 34 and a pipe 50 directed to the discharge port 10b of the deodorizing device 10. When the first exhaust path is formed, the pipes 39 and 50 communicate with each other, and the pipe 34 is cut off from the two communicating pipes. Then, the malodorous gas is made odorless, and the exhaust gas that does not contain the malodorous gas and has been deodorized is discharged from the discharge port 10b of the deodorizing device 10.

In summary, when the first exhaust passage is formed, the exhaust gas passes through the exhaust circuit 20 in the following order as shown in FIG. Inflow port 10a → piping 30 → valve 21 → piping 31 → valve 22 → piping 33
→ Deodorizing unit 13A → Pipe 35 → Valve 23 → Pipe 3
6 → valve 24 → pipe 38 → deodorizing unit 13B → pipe 39 → valve 25 → pipe 50 → discharge port 10b. Especially for the deodorizing unit, the order is 13A → 13B. Further, when the second exhaust path is formed, the exhaust gas passes through the exhaust circuit 20 as follows, as shown in FIG. 7. Inlet 10a → Piping 30 → Valve 21 → Piping 3
2-> valve 24-> piping 38-> deodorizing unit 13B-> piping 39-> valve 25-> piping 34-> valve 22-> piping 33->
Deodorizing unit 13A → piping 35 → valve 23 → piping 37
→ It is the discharge port 10b. Especially regarding the deodorizing unit,
13B → 13A.

In the present invention, of the two deodorizing units 13 and 13 provided in the deodorizing device 10, the processing gas processed in one deodorizing unit 13 (exhaust gas after the malodorous gas processing) is used in the other deodorizing unit 13. I am trying to make it flow into. When the first exhaust path is formed in the exhaust circuit 20, the processing gas processed by the deodorizing unit 13A flows into the deodorizing unit 13B. Here, the deodorizing unit 13A is in the processing step, and the deodorizing unit 13B is in the regenerating step. And the deodorizing unit 13
When it is considered that the deodorizing ability of A is lowered, the first exhaust path is switched to the second exhaust path, the deodorizing unit 13A is moved to the regeneration step, and instead, the deodorizing unit 13B is moved to the processing step. In the second exhaust path, the processing tank 2
Exhaust gas flows from the deodorizing unit 13B to the deodorizing unit 13A in this order.

The following effects can be obtained by causing the processing gas processed by the deodorizing unit 13 in the processing step to flow into the deodorizing unit 13 in the regeneration step. The first effect is that the deodorizing unit 13 in the regeneration process is in a windy state instead of a non-winding state, so that the effect of decomposing the malodorous gas adsorbed on the activated carbon is increased. This is because the odorous gas that is hidden in the porous activated carbon is taken out to the outside and flows toward the titanium dioxide side that is the photocatalyst by setting the windy state. When the extracted malodorous gas comes into contact with the surface of titanium dioxide, the malodorous gas is decomposed by the photocatalytic action. As a second effect, even when the deodorizing process by the first stage deodorizing unit 13 (deodorizing unit 13 in the processing step) is incomplete, the second stage deodorizing unit 13 (deodorizing unit 13 in the reproducing step) Thus, the deodorizing process is performed again, so that the two-stage process can be performed. Therefore, a more reliable deodorizing process can be performed. Further, as a third effect, the deodorizing process is performed while the deodorizing unit 13 which is the first stage (processing step) of the two deodorizing units is replaced, so that the load on one deodorizing unit 13 is reduced. , Which leads to improvement in durability of the entire deodorizing device 10.

Under the conditions of use of the deodorizing device 10, most of the malodorous gas in the exhaust gas is removed by the first-stage deodorizing unit 13 (deodorizing unit 13 in the processing step). This is a deodorizing unit 13 depending on the usage conditions.
You can change the number of deodorizing filters installed in the
This is performed by changing the number of the deodorizing units 13 provided in the above. Therefore, almost clean gas flows into the deodorizing unit 13 in the regeneration process (second stage). Therefore, even if the processing gas is allowed to flow from the deodorizing unit 13 in the treatment step (first stage) to the deodorizing unit 13 in the regeneration step, there is no burden of regeneration, and the first effect due to the windy state (decomposition treatment) Improvement of effect) is obtained. Also, almost clean gas can be made even cleaner (second effect).

Switching of the steps of each deodorizing unit 13 will be described with reference to FIGS. FIG. 8 is a diagram showing working steps of the deodorizing units 13A and 13B. Deodorizer 1
In the deodorizing unit 13/13 provided in 0, switching from the processing step to the regeneration step and vice versa,
This is performed by switching the exhaust path formed in the exhaust circuit 20. Further, in the exhaust circuit 20, switching between the first and second exhaust paths is performed by the controller 70 by the valve 22.2.
3 and so on are controlled.

As shown in FIG. 5, the deodorizing device 10 is provided with a timer 51 (time switch), which is connected to the controller 70 so that signals can be transmitted. In addition,
The timer 51 may be inside or outside the casing of the deodorizing device 10. Also, the garbage processor 70
Instead of using the controller 70 as a mechanism for controlling each of the above devices, a controller dedicated to the deodorizing device 10 may be provided.

The timer 51 is constructed so as to issue a signal to the controller 70 every time a fixed time has elapsed. When the controller 70 receives a signal from the timer 70, the valves 22 and 23 provided in the exhaust circuit 20 are
... is controlled. With the above configuration, during the exhausting operation of the food waste disposer 2, the exhaust gas is formed in the exhaust circuit 20 every time a certain time elapses (first and second).
The exhaust path is switched. Then, by switching the exhaust path, each of the deodorizing units 13, 13 provided on the exhaust circuit 20.
The work steps of are switched as shown in FIG. That is, when the first exhaust path is formed on the exhaust circuit 20, the deodorization unit 13A is switched from the regeneration process to the treatment process, and the deodorization unit 13B is switched from the treatment process to the regeneration process. Further, when the second exhaust path is formed on the exhaust circuit 20, the deodorizing unit 13A is switched from the treatment process to the regeneration process, and the deodorization unit 13B is switched from the regeneration process to the treatment process.

Therefore, the deodorizing unit 1 has a simple structure.
It is possible to switch the work process of 3.13. Therefore, the deodorizing unit whose deodorizing ability is lowered can be automatically regenerated, and the deodorizing ability of the entire deodorizing device 10 can be stably maintained.

[0044]

Since the present invention is constructed as described above, it has the following effects. That is, the deodorizing device according to claim 1, comprising a deodorizing unit, and a mixture of an adsorbent and a photocatalyst in the deodorizing unit. The deodorizing unit is provided with a plurality of deodorizing units, and a processing step is provided in a work cycle of each deodorizing unit. A deodorizing unit is configured so that both processes are repeated, and each deodorizing unit adsorbs malodorous gas and decomposes malodorous gas in the treatment process, and decomposes the adsorbed malodorous gas in the regeneration process. Since the unit is regenerated, the deodorizing unit 13 in the processing step performs deodorizing treatment of the malodorous gas, and the deodorizing unit in the regenerating step can regenerate the deodorizing ability. Also, the deodorizing ability is maintained, and a stable deodorizing effect can be obtained.

Further, as described in claim 2, since the processing gas discharged from the deodorizing unit in the processing step is made to flow into the deodorizing unit in the regenerating step, the first effect is the regenerating step. Since the inside of the deodorizing unit 13 is in a windy state instead of a non-winding state, the effect of decomposing the malodorous gas adsorbed by the adsorbent is increased. Further, even if the deodorizing process by the deodorizing unit in the treatment process is incomplete, the deodorizing process is performed again by the deodorizing unit in the regenerating process, so that a two-stage process can be performed. For this reason,
A more reliable deodorizing process can be performed. Furthermore, of the two deodorizing units, the deodorizing unit, which is the first stage (processing step), is replaced and the deodorizing process is performed, so the load on one deodorizing unit is reduced and the durability of the entire deodorizing device is improved. Connected to.

Further, as described in claim 3, since the processing step and the regeneration step of each deodorizing unit can be switched at regular intervals by the timer, the working steps of the deodorizing unit can be switched with a simple configuration. it can. Therefore, it is possible to automatically regenerate the deodorizing unit having a reduced deodorizing ability, and it is possible to stably maintain the deodorizing ability of the entire deodorizing device.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of a garbage processing machine.

FIG. 2 is a side view of the same.

FIG. 3 is a plan partial cross-sectional view showing a configuration of a deodorizing unit 13A.

FIG. 4 is a perspective view showing a part of a deodorizing filter 14.

5 is a circuit diagram showing a configuration of an exhaust circuit 20. FIG.

FIG. 6 is a circuit diagram showing an exhaust circuit 20 in which a first exhaust path is formed.

FIG. 7 is a circuit diagram showing an exhaust circuit 20 in which a second exhaust path is formed.

FIG. 8 is a diagram showing working steps of the deodorizing units 13A and 13B.

[Explanation of symbols] 1 garbage processing machine 2 processing tanks 10 Deodorizer 13 Deodorization unit 14 Deodorizing filter 51 timer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01D 53/81 B01D 53/36 H 53/86 J F term (reference) 4C080 AA05 AA07 BB02 CC12 HH05 JJ04 JJ05 KK08 LL03 MM01 MM02 MM05 NN01 QQ01 4D002 AA03 AA06 AA13 AA14 AB02 AC10 BA03 BA05 BA09 DA41 DA45 DA70 EA07 GA03 GB20 4D048 AA22 AB03 BA05X BA07X BA41X BB02 CD05 EA01

Claims (3)

[Claims] 1. A deodorizing device comprising a deodorizing unit, wherein the deodorizing unit contains a mixture of an adsorbent and a photocatalyst.
In addition to having multiple deodorizing units, each deodorizing unit has a work process and a regenerating process in the work cycle, and both processes are configured to be repeated.Each deodorizing unit adsorbs malodorous gas in the process and The deodorizing device using a mixture of an adsorbent and a photocatalyst, characterized by decomposing the adsorbed malodorous gas and regenerating the unit in the regeneration step. 2. The adsorbent and the photocatalyst according to claim 1, wherein the processing gas discharged from the deodorizing unit in the treatment step is allowed to flow into the deodorizing unit in the regeneration step. A deodorizing device using a mixture. 3. The mixture of the adsorbent and the photocatalyst according to claim 1 or 2, wherein each deodorizing unit switches between a treatment step and a regeneration step at regular time intervals by a timer. Deodorizing device using the body.