JP2001054778A - Device for treating organic matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the odor stayed in a treating tank from being directly discharged even if one air discharging passage is provided for using when deodorized and the other for using when not deodorized and both are switched. SOLUTION: This device is provided with a treating tank 1 for decomposing the organic matter such as garbage to be thrown into the tank 1, a first air discharging passage 15 for discharging exhaust gas to the outside through a deodorizing device 18 for heating and deodorizing the exhaust gas from the tank 1, a second air discharging passage 16 for discharging the exhaust gas directly to the outside, a switching means (switching valve 17) for switching the air discharging passage from the passage 15 to the passage 16 when the deodorization is stopped and a control means for increasing the discharging air volume of the passage 15 before the air discharging passage is switched from the passage 15 to the passage 16 by the valve 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic material processing apparatus for decomposing organic substances such as garbage, and more particularly to a deodorizing apparatus for heating and deodorizing exhaust gas containing malodor generated during decomposition processing of organic substances. And an organic matter processing apparatus.

[0002]

2. Description of the Related Art Conventionally, a device equipped with a deodorizing device for heating and removing odors in exhaust gas is disclosed in
As disclosed in JP-296216-B09B 3/00, etc., a garbage disposal apparatus provided with a deodorizer for deodorizing exhaust gas using a heater and a catalyst in an exhaust passage of exhaust gas from a processing tank. There is.

[0003]

However, in the above-mentioned conventional apparatus, even when deodorization is not required (when no deodorization is performed), the same exhaust passage is used, and the deodorizing apparatus with the heater turned off passes through the deodorizing apparatus, so that the inside of the processing tank is removed. Exhaust gas is being exhausted. Condensation may occur due to exhaust gas passing through the cold deodorizing device, and catalyst may easily become clogged when dry carrier or organic fine powder is mixed with exhaust gas, which shortens the life of the deodorizing device. Cause you to

[0004] In order to solve the above-mentioned problems, it is conceivable to provide an exhaust passage for directly discharging exhaust gas to the outside when deodorization is not required, in addition to the above-mentioned exhaust passage, and to switch the exhaust gas.

[0005] However, in the case of switching by providing respective exhaust passages for deodorization and non-deodorization, the exhaust air volume is small at the time of deodorization. The smell is in the tank. Therefore, even if it is switched to exhaust directly after the generation of odor is reduced, the odor trapped in the processing tank is exhausted at once, so it is temporarily, but compared to the exhaust through the deodorizer up to that time. There is a possibility that exhaust with a high odor level may be emitted.

[0006] In addition, in the case of switching by providing respective exhaust passages for deodorization and non-deodorization, when deodorization is stopped, exhaust air passing through the deodorization device is suddenly cut off, and heat is generated even when power is stopped. Since the heating heater or the like that continues for a while cannot be cooled, the temperature of the deodorizing device increases, and there is a concern that resin parts and the like near the deodorizing device may be thermally deformed.

Accordingly, the present invention has been made to solve such a problem, and even if switching is performed by providing respective exhaust passages for deodorization and non-deodorization, the invention is kept in a processing tank. It is an object of the present invention to provide an organic matter processing apparatus capable of preventing odors from being directly discharged.

It is another object of the present invention to provide an organic material processing apparatus which can cool a deodorizing device whose temperature rises by switching an exhaust passage when deodorizing is stopped and can prevent thermal deformation of resin parts and the like near the deodorizing device. Things.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a treatment tank for decomposing organic substances such as garbage and the like, and heating exhaust gas from the treatment tank. A first exhaust passage for discharging exhaust gas to the outside via a deodorizing device for deodorizing, a second exhaust passage for directly discharging exhaust gas from the processing tank to the outside, and an exhaust passage for stopping the deodorization. Switching means for switching from the first exhaust passage to the second exhaust passage, and increasing the exhaust air volume in the first exhaust passage before switching the exhaust passage from the first exhaust passage to the second exhaust passage. And control means.

Further, a ventilation means for blowing cooling air to the first exhaust passage when the deodorization is stopped is provided.

Further, the ventilation means drives a ventilation passage for ventilating the deodorizing device in the first exhaust passage even when deodorization is stopped, and drives a fan provided in the first exhaust passage for a fixed time even after the deodorization is stopped. And control means.

In addition, the switching means includes a switching valve for switching between the first exhaust passage and the second exhaust passage. When the switching valve switches the exhaust passage to the second exhaust passage, the switching valve is operated. A ventilation passage for taking in outside air is formed in the first exhaust passage through the first exhaust passage.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of a main part on the back side of an organic matter processing apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part on the upper side when there is no deodorization, and FIG. FIG. 4 is an enlarged perspective view of the switching valve, and FIG. 5 is a sectional view taken along line AA of FIG.

This organic matter treatment apparatus accommodates a carrier of microorganisms (woody chips such as sawdust), and a treatment tank 1 having an upper surface opening into which organic matter such as garbage is charged is placed in an outer case 2 composed of upper and lower two parts. It is housed and configured.

The upper surface of the outer case 2 is opened corresponding to the upper surface opening 3 of the processing tank 1, and an input port 4 for inputting microbial carriers, garbage and the like is formed. An upper lid 5 is provided which can be opened and closed by a hinge or the like. The opening / closing of the upper lid 5 is detected by a detecting means (not shown), and is input to a control unit including a microcomputer or the like.

In the processing tank 1, a stirring shaft 7 having a plurality of stirring blades 6 is provided between the front and rear walls so as to be rotatable forward and backward. Both ends of the stirring shaft 7 are supported by bearings 8 and 9 on the front and rear walls of the processing tank 1, and a shaft end 10 on the rear wall is connected to a rotating shaft 12 of a stirring motor via a speed reduction mechanism 11. The rotation of the motor is transmitted at a reduced speed and driven to rotate.

A large number of exhaust holes 13 are formed in the upper rear wall of the processing tank 1, and an exhaust fan 14 is provided downstream thereof.
Is attached. On the downstream side of the exhaust fan 14, a switchable automatic switching between a first exhaust passage 15 to which a deodorizing device described later is attached and a second exhaust passage 16 for directly discharging exhaust gas to the outside is provided. A valve 17 is provided.

In the deodorizing device 18 attached to the first exhaust passage 15, a U-shaped heater 19 is arranged on the upstream side, and a catalyst 20 formed of a ceramic honeycomb structure is arranged on the downstream side. These are housed in a metal tubular body 21 made of stainless steel or the like having heat resistance and corrosion resistance. As a result, the inflowing exhaust gas is heated by the heater 19, and the heated exhaust gas passes through the catalyst 20, thereby heating the catalyst 20 and promoting the decomposition reaction of the malodorous component contained in the exhaust gas. Has become.

An air guide 22 made of a resin that is easy to mold is connected to the outlet side of the deodorizing device 18, and this air guide 22 is connected to an exhaust port 23 opening at the lower part on the back side of the outer case 2. I have. A dilution fan 24 for diluting (mainly reducing the temperature) the temperature and odor of the high-temperature exhaust gas discharged from the deodorizing device 18 is attached to the exhaust port 23 side of the air guide 22. 18
On both sides of the joining portion 25 between the metal tubular body 21 and the air guide 22, ventilation holes 26 and 27 for taking in outside air for dilution and cooling of the joining portion are formed.

As a result, the exhaust gas that has become hot air through the deodorizing device 18 is diluted by the outside air from the ventilation holes 26 and 27, and the joint 25 between the metal tubular body 21 and the resin air guide 22 is cooled. Therefore, even if the air guide 22 is formed of a resin that can be easily molded, problems such as thermal deformation can be prevented.

When the dilution fan 24 operates,
Exhaust gas from the deodorizing device 18 is sucked, the exhaust gas can be reliably discharged, and the inside of the deodorizing device 18 has a negative pressure. There is no problem such as a bad odor or corrosion of interior parts by gas or water vapor.

If only the joint 25 between the metal tubular body 21 and the resin air guide 22 is to be cooled, the ventilation hole 26 may be provided only on the metal tubular body 21 side. Air guide 2 on the metal tubular body 21 side for dilution
A large number of ventilation holes including the ventilation holes 27 on the two sides must be formed. In this case, the metal cylindrical body 21 side may be excessively cooled, which may adversely affect the heating temperature of the catalyst 20. Accordingly, by providing the ventilation holes 26 and 27 on both sides of the joint 25 as described above, the adverse effect of lowering the heating temperature of the catalyst 20 is minimized, and the dilution and the cooling of the joint 25 are realized. Can be.

On the other hand, the second exhaust passage 16 communicates with an exhaust port 28 that opens on the back side of the exhaust fan 14, that is, on the back side of the exterior case 2.

As shown in FIG. 5, an intake port 29 for taking in outside air is formed on the bottom side of the outer case 2, and the outside air taken in from the intake port 29 is supplied to the air guide 22 and the deodorizing device. Through a space between the cooling tank 18 and the processing tank 1, a suction path 32 extending from an upper ventilation hole 30 (see FIGS. 2 and 3) to an intake hole 31 formed in an upper side wall of the processing tank 1. It is taken into the processing tank 1. In addition,
During the operation of the dilution fan 24, a part of the outside air taken in from the intake port 29 is supplied to the metal cylinder 21 and the air guide 22.
5 are taken into the first exhaust passage 15 from the ventilation holes 26 and 27 formed on both sides of the joint portion 25 as shown by the one-dot broken line arrow in FIG.

At the bottom of the processing tank 1, as shown in FIG. 5, a discharge port 33 for the processed material (compost) stored therein is opened and opened by a drawer-type shutter 34 so as to be openable and closable. At the bottom of the outer case 2 below the outlet 33, a discharge chute 35 inclined forward is integrally formed, and by pulling out the shutter 34, the compost is fed to the front side of the outer case 2 via the discharge chute 35. The processed material can be taken out.

On the other hand, as shown in FIG. 4, the switching valve 17 has a valve body 17a having an arc-shaped cross section for opening and closing the respective inlets of the first exhaust passage 15 and the second exhaust passage 16, and a lower portion thereof. The rotating shaft 41 of the motor 40 is connected to and driven by the central portion of the sector formed on the side.

On the upper surface side of the switching valve 17, when the switching valve 17 is switched from the deodorized state in FIG. 3 to the non-deodorized state in FIG. A ventilation groove 17c that forms a ventilation path for blowing air is formed. When the switching valve 17 is in the non-deodorized state shown in FIG. 2, a ventilation hole 2a communicating with the ventilation groove 17c is formed on the upper surface of the outer case 2 corresponding to the formation position of the ventilation groove 17c.

Therefore, if the dilution fan 24 is operating in the state of FIG. 2, the outside air is taken in from the gap between the upper wall of the outer case 2 and the upper lid 5 as shown by the solid arrow in FIG. The air flows into the first exhaust passage 15 through the hole 2a and the ventilation groove 17c, and becomes cooling air for cooling the deodorizing device 18.

The downstream side of the exhaust hole 13 (the deodorizing device 18)
An odor sensor 43 for detecting the odor level in the tank is provided on the (upstream side), and a thermistor 44 for detecting the catalyst temperature is provided on the downstream side of the catalyst 20. The outputs of the odor sensor 43 and the thermistor 44 are input to a control unit such as a microcomputer (not shown). The control unit controls the motor 40 to switch the switching valve 17, and turns on / off the heater 19 and temperature. Control, ON / OFF of the fans 14 and 24, and air volume control are performed.

That is, when the odor level in the tank becomes equal to or higher than the preset required level for deodorization, the odor sensor 43 detects this level, and the switching valve 17 is rotated by the motor 40 to the position shown in FIG. The deodorizing device 18 is supplied to the first exhaust passage 15 where the deodorizing device 18 is provided to perform deodorizing. When the odor level in the tank falls below the required level for deodorization, the deodorization is turned off (the heater 19 is turned off) as shown in FIG. 6, and then the exhaust air volume by the exhaust fan 14 and the dilution fan 24 is temporarily increased to perform processing. After the odor trapped in the tank 1 is discharged, the switching valve 17 is turned to the position shown in FIG. 2 to discharge the exhaust gas directly from the second exhaust passage 16 to the outside.

On the other hand, the heater 19 is energized (turned on) in conjunction with the switching of the switching valve 17 when the odor level in the tank exceeds the deodorizing required level, and the catalyst temperature detected by the thermistor 44 is predetermined. The temperature is controlled so as to be maintained within the temperature range (for example, 250 to 300 ° C.).

In this embodiment, the amount of exhaust air at the time of deodorization, that is, the amount of exhaust air discharged from the processing tank 1 to the first exhaust passage 15 is determined by considering the size of the catalyst 20, the deodorizing ability, the running cost, and the like. ５０50 l / min.
In addition, the amount of exhaust air at the time of no deodorization, that is,
The air volume of the direct exhaust through the exhaust passage 16 of 20 to 20
0 l / min. The air flow has a range because the exhaust air flow is controlled by the water content of the object detected by a water content sensor (not shown).

In the above configuration, at the start of use of the present apparatus, a predetermined amount of a microorganism carrier (woody chips such as sawdust) is previously charged into the treatment tank 1. When processing garbage, open the upper lid 5 and put the processing tank 1 through the input port 4.
Put garbage inside and close the top lid 5. When the upper lid 5 is closed, this is detected by a detecting means (not shown), and a control unit composed of a microcomputer or the like energizes the stirring motor and the exhaust fan 14 based on the output.

By controlling the power supply to the stirring motor, the stirring shaft 7 on which the stirring blades 6 are erected intermittently rotates forward and backward to stir and mix the carrier and the garbage. Further, by controlling the power supply to the exhaust fan 14, air (exhaust gas) containing water vapor in the processing tank 1 is flowed as shown by the solid line arrow in FIG. To prevent the inside from becoming high humidity. In addition, as the air in the processing tank 1 is discharged to the outside, as indicated by a one-dot broken line arrow in FIGS.
Fresh outside air is introduced into the processing tank 1 through the air inlet 29 at the bottom of the outer case 2, the ventilation hole 30 at the top of the outer case 2, and the air inlet 31 at the side wall, and oxygen necessary for activating microorganisms is introduced into the processing tank 1. Supply.

As described above, when the microorganisms are activated and the fermentation treatment proceeds, an odor may be generated. Here, when the odor level in the tank detected by the odor sensor 43 becomes equal to or higher than a predetermined deodorization required level, the control unit drives the motor 40 to switch the switching valve 17 to the state shown in FIG. When the heater 19 is energized, the dilution fan 24 is energized, and the exhaust gas from the processing tank 1 flows into the first exhaust passage 15 where the deodorizing device 18 is provided.

The energization of the heater 19 of the deodorizing device 18 is controlled based on the catalyst temperature detected by the thermistor 44 so that the catalyst temperature is maintained, for example, within 250 to 300 ° C.

The exhaust gas discharged into the first exhaust passage 15 as described above is heated to a catalyst reaction temperature of 250 to 300 ° C. and supplied to the catalyst 20. The high-temperature exhaust gas supplied into the catalyst 20 heats the catalyst 20 to the same temperature,
The odor is deodorized by the oxidative decomposition reaction of the malodor promoted by the catalytic action, and is almost completely deodorized while passing through the catalyst 20. The deodorized exhaust gas is sucked by the dilution fan 24 and diluted by the outside air sucked through the ventilation holes 26 and 27, cooled down to a temperature of about 60 ° C., and provided on the lower rear side of the outer case 2. The air is exhausted from the exhaust port 23 to the outside.

The outside air taken into the processing tank 1 during the above-mentioned deodorizing operation is warmed through the intake path 32 along the deodorizing device 18 at a high temperature, so that the temperature in the processing tank 1 is used to activate microorganisms. Maintains a suitable temperature to promote the fermentation process. In this way, the garbage is decomposed into carbon dioxide and water by the microorganisms cultured on the carrier and composted.

When the above processing proceeds and the odor level in the tank detected by the odor sensor 43 falls below the required level for deodorization, the control unit performs the deodorizing operation as shown in FIG.
After the FF (heater 19 is turned off), the exhaust fan 14
After the exhaust air volume from the dilution fan 24 is temporarily increased and the odor trapped in the processing tank 1 is discharged, the motor 40
To rotate the switching valve 17 to the state shown in FIG.
Switch from 8 to discharge exhaust gas directly to the outside.

As described above, the amount of exhaust air is increased and the odor trapped in the processing tank 1 is exhausted to the first exhaust passage 15 having the deodorizing device 18 and then switched to the second exhaust passage 16 to directly exhaust. By performing the above, it is possible to prevent the smell trapped in the processing tank 1 from being directly discharged. In addition, there is also a cooling effect of the deodorizing device 18 whose temperature rises when deodorizing is stopped.

The switching valve 17 is connected to the second exhaust passage 1
Even after switching to 6, the dilution fan 24 is turned off after continuing to rotate for a certain period of time (about 10 to 15 minutes). Such control can be easily realized by performing timer control by a control unit including a microcomputer or the like.

As a result, as shown by solid arrows in FIG. 1, outside air is taken in from the gap between the upper wall of the outer case 2 and the upper lid 5, and the ventilation holes 2a and the ventilation grooves overlapping as shown in FIGS. 17c, flows into the first exhaust passage 15,
The cooling air is used to cool the deodorizing device 18. Accordingly, the deodorizing device 18 in which the heating of the heater 19 continues for a while even when the energization is stopped can be effectively cooled, and the thermal deformation of the resin parts and the like near the deodorizing device 18 can be reliably prevented.

As described above, according to the present embodiment, in addition to the first exhaust passage 15 having the deodorizing device 18,
Exhaust passage 1 that directly discharges exhaust gas from the outside to the outside
6 and can be switched by the switching valve 17, so when the deodorization is not necessary, the exhaust gas is directly discharged to the outside from the second exhaust passage 16 to reduce the pressure loss and to achieve a smooth exhaust. It becomes possible, and the water vaporized from the garbage can be quickly discharged.

Also, compared to the conventional exhaust gas which always passes the exhaust gas through the exhaust passage having the deodorizing device irrespective of whether or not it is deodorized, dew condensation and drying in the cooled deodorizing device 18 with the heater 19 turned off are performed. Thus, it is possible to prevent clogging or the like due to the exhaust gas mixed with the fine powder scattered by passing through the catalyst 20 more than necessary, and it is possible to extend the life of the deodorizing device 18.

Even if the first and second exhaust passages 15 and 16 for deodorization and non-deodorization can be switched as described above, the odor trapped in the processing tank 1 can be increased to increase the exhaust air volume. Is discharged to the first exhaust passage 15 where the deodorizing device 18 is provided, and then is switched to the second exhaust passage 16 to perform direct exhaust, thereby preventing the odor trapped in the processing tank 1 from being directly discharged. Can be. In addition, a cooling effect of the deodorizing device 18 that increases in temperature when the deodorizing is stopped can be obtained.

Further, even after switching to the second exhaust passage 16, cooling air (outside air) is blown into the first exhaust air passage 15,
Since the temperature of the deodorizing device 18 that rises in temperature when deodorizing is stopped can be cooled more effectively, thermal deformation of the resin parts and the like near the deodorizing device 18 can be more reliably prevented.

Further, by simply forming the ventilation holes 2a and the ventilation grooves 17c as described above, it can be realized by continuing to rotate the dilution fan 24 of the first exhaust passage 15 for a certain period of time after stopping the deodorization. .

Further, in conjunction with the switching from the first exhaust passage 15 to the second exhaust passage 16 by the switching valve 17 when the deodorization is stopped, a ventilation passage for cooling the deodorizing device 18 by the outside air is formed. The deodorizing device 18 can be efficiently cooled only when it is necessary to stop deodorizing.

In the above embodiment, the switching valve 17 is used as the switching means for switching between the first exhaust passage 15 and the second exhaust passage 16. However, for example, in the case of the above embodiment, the second exhaust passage 15 is used. An opening / closing valve that opens and closes by air pressure is provided at an exhaust port 28 of the exhaust gas generator 16, and only the dilution fan 24 is driven to exhaust air during deodorization, and the exhaust fan 14
Can be driven to exhaust air.

In the above embodiment, the switching valve 17 driven by the motor 40 is used. However, a solenoid may be used as a switching drive source, and the shape of the deodorizing device 18 may be adjusted by utilizing the heat of the heater 19. The switching valve 17 may be driven by a shape memory spring made of a memory alloy.

[0052]

As described above, according to the present invention, the first exhaust passage for discharging the exhaust gas to the outside through the deodorizing device for heating and deodorizing the exhaust gas from the processing tank, A second exhaust passage for directly discharging the exhaust gas to the outside, a switching unit for switching the exhaust passage from the first exhaust passage to the second exhaust passage when the deodorization is stopped, and an exhaust passage for the first exhaust passage by the switching unit. By providing control means for increasing the exhaust air volume of the first exhaust passage before switching from the passage to the second exhaust passage, even if the exhaust passage for deodorization and non-deodorization can be provided for switching, Since the odor trapped in the processing tank is discharged to the first exhaust passage having the deodorizing device and then switched to the second exhaust path to perform direct exhaust, the odor trapped in the processing tank is directly discharged. Can be prevented.
In addition, since the temperature of the deodorizing device that rises when the deodorizing operation is stopped can be cooled, thermal deformation of the resin parts and the like near the deodorizing device can be prevented.

Further, by providing a ventilation means for sending cooling air to the first exhaust passage at the time of the deodorization stop, the deodorizing device whose temperature rises at the time of the deodorization stop can be more effectively cooled. Thermal deformation of a resin component or the like near the device can be more reliably prevented.

The ventilation means may further comprise: a ventilation passage for ventilating the deodorizing device in the first exhaust passage even when deodorization is stopped;
Control means for driving the fan provided in the exhaust passage for a certain period of time even after the deodorization is stopped, so that the fan in the first exhaust passage is kept rotating for a certain period of time after the stop of the deodorization only by forming a ventilation path. The above can be realized by
Inexpensive configuration.

Further, a switching valve for switching between the first exhaust passage and the second exhaust passage is provided as the switching means, and the switching valve switches the exhaust passage to the second exhaust passage, and switches the exhaust passage to the second exhaust passage. Forming a ventilation passage for taking in outside air into the first exhaust passage, whereby the ventilation passage for taking in outside air into the first exhaust passage in conjunction with switching of the switching valve from the first exhaust passage to the second exhaust passage. Is formed, the deodorizing device can be efficiently cooled only when it is necessary to stop deodorizing.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part on the back side of an organic matter processing apparatus according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part on the upper surface when no deodorization is performed.

FIG. 3 is a cross-sectional view of a main part on the upper surface when deodorization is performed.

FIG. 4 is an enlarged perspective view of the switching valve of the embodiment.

FIG. 5 is a sectional view taken along line AA of FIG. 3;

FIG. 6 is a diagram showing a change in an exhaust air volume of a first exhaust passage in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing tank 2 Outer case 5 Upper lid 13 Exhaust hole 14 Exhaust fan 15 First exhaust passage 16 Second exhaust passage 17 Switching valve 18 Deodorizer 19 Heater 20 Catalyst 23, 28 Exhaust port 24 Dilution fan 29 Intake port 32 Intake path 40 motor 43 odor sensor 44 thermistor

Continuation of the front page (72) Inventor Masahiko Asada 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term (reference) in Sanyo Electric Co., Ltd. 4D004 AA03 CA19 CA48 CB50

Claims (4)

[Claims] 1. A first exhaust system for discharging exhaust gas to the outside via a processing tank for decomposing organic substances such as garbage to be supplied and a deodorizing device for heating and deodorizing the exhaust gas from the processing tank. A second exhaust passage that directly discharges exhaust gas from the processing tank to the outside; a switching unit that switches the exhaust passage from the first exhaust passage to the second exhaust passage when deodorization is stopped; And a control means for increasing the amount of exhaust air in the first exhaust passage before switching the exhaust passage from the first exhaust passage to the second exhaust passage. 2. The organic matter processing apparatus according to claim 1, further comprising a ventilation unit for blowing cooling air to the first exhaust passage when the deodorization is stopped. 3. The ventilation device according to claim 2, wherein the ventilation means is configured to ventilate the deodorizing device in the first exhaust passage even when deodorization is stopped,
3. A control means for driving a fan provided in the exhaust passage for a predetermined time even after the deodorization is stopped.
The organic matter processing apparatus according to the above. 4. A switching valve for switching between the first exhaust passage and the second exhaust passage, wherein the switching valve switches the exhaust passage to a second exhaust passage. 4. The organic matter processing apparatus according to claim 3, wherein a ventilation path for taking in outside air is formed in the first exhaust passage via the first exhaust passage.