JP2000061240A - Deodorizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorizing device capable of executing efficiently the heating of a catalyst carrier and high in reliability of a heater heating the catalyst carrier. SOLUTION: An odor introducing passage 34 provided at one end of an outer wall 311 and externally introducing odor to an odor passage 313 and a discharge port 33 provided on one end side of an inner wall 312 and discharging the air after deodorization to the outside are provided, and the heater 315 is disposed attachably/detachably to the catalyst carrier 314 from the other end side of the outer wall 311 and the inner wall 312 and the heater 315 is arranged so as to heat directly the catalyst carrier 314.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing device for decomposing various malodorous substances with a catalyst, and is applied to, for example, a garbage disposal machine.

[0002]

2. Description of the Related Art Heretofore, as a catalyst reaction type deodorizing apparatus for reducing heat loss to the outside of the deodorizing apparatus, there has been known one described in Japanese Patent Laid-Open No. 5-187623. In this conventional technique, the outer passage is formed by the outer wall and the inner wall,
A middle passage is formed by the inner wall and the inner wall, and an inner passage is formed in the inner wall. A catalyst carrier is arranged in the inner passage, and a heater is provided on the inner passage side of the inner wall.

In the catalytic reaction type deodorizing device, the catalyst carrier for deodorizing the odor is used in order to enhance the reactivity with the odor.
It is necessary to heat to a high temperature of 00 ° C or higher. Further, in the catalyst activated at high temperature, the higher the temperature of the odor supplied to the catalyst, the higher the catalytic reactivity and the greater the deodorizing effect.
Therefore, in the above conventional technique, the odor in the middle passage is heated by the heater to enhance the catalytic reactivity, and the heater heats the catalyst carrier to a high temperature through the inner wall. Further, the heat of the air after deodorization is also collected through the inner wall to the odor in the middle passage before being discharged to the outside, and is used for preheating the odor, thereby reducing heat dissipation loss.

[0004]

However, in the above-mentioned configuration of the prior art, since the catalyst carrier is indirectly heated from the heater through the inner wall, the catalyst carrier cannot be efficiently heated. Further, in the above-mentioned conventional technique, since the heater for heating the catalyst carrier is not structured to be taken out from the deodorizing device, only the heater cannot be taken out of the deodorizing device at the time of maintenance and inspection of the heater. Therefore, maintenance and inspection cannot be performed easily, and it is difficult to maintain the reliability of the heater.

The present invention has been made in view of the above problems, and in a catalytic reaction type deodorizing device for reducing heat loss to the outside of the deodorizing device, a deodorizing device capable of efficiently heating a catalyst carrier is provided. The purpose is to provide. Also,
An object of the present invention is to provide a deodorizing device with a highly reliable heater for heating a catalyst carrier.

[0006]

In order to achieve the above object, in the invention described in claim 1, the odor passage (313) formed by the outer wall (311) and the inner wall (312) and the inner wall (312). A catalyst carrier (314) which is disposed inside and carries a catalyst for adsorbing odorous components, and a catalyst carrier (314)
And a heater (315) for heating the inner wall (312) and an air passage (31) formed in the inner wall (312) downstream of the catalyst carrier (314).
6) In the deodorizing device having and, a heater (315)
Is characterized in that the catalyst carrier (314) is directly heatable.

According to this, since the heater (315) is arranged so as to be able to directly heat the catalyst carrier (314), the heat generated by the heater (315) can be directly transmitted without passing through other members. The catalyst carrier (3
It is possible to heat 14). In the invention according to claim 2, the odor introduction passage (34) provided at one end of the outer wall (311) for introducing the odor into the odor passage (313) from the outside.
And an exhaust port (33) provided on one end side of the inner wall (312) for discharging deodorized air to the outside.
5) is characterized in that it is removably installed on the catalyst carrier (314) from the other end side of the outer wall (311) and the inner wall (312).

According to this, since the odor introducing passage (34) and the exhaust port (33) are provided at one end side of the deodorizing device, the odor introducing passage (34) and the exhaust port (33) are not provided. A heater (315) can be detachably arranged on the other end of the deodorizing device. Therefore, the heater (315) is taken out of the deodorizing device, and the heater (31
It becomes easy to perform maintenance and inspection of 5), and the heater (31
The reliability of 5) can be improved.

Further, as in the third aspect of the present invention, it is preferable that the heater (315) is arranged so that the catalyst carrier (314) can be directly heated and is detachably attached. By adopting such a configuration, it becomes possible to efficiently heat the catalyst carrier (314) and to obtain a deodorizing device in which the reliability of the heater (315) is improved.

In the invention according to claim 4, the outer wall (31
1), the inner wall (312) and the catalyst carrier (314) are cylindrical, and the heater (315) is inserted in the center of the catalyst carrier (314). According to this, heating of the catalyst carrier (314) from the heater (315),
In addition, heat transfer from the air passage (316) to the odor passage (313) can be uniformly and efficiently performed.

The reference numerals in the parentheses above indicate the correspondence with the concrete means described in the embodiments described later.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention shown in the drawings will be described. (First Embodiment) FIG. 1 is a schematic overall configuration diagram of a food waste processing device 1 to which a deodorizing device of the present invention is applied. The raw garbage processing device 1 includes a raw garbage input unit 10, a decomposing unit 20 for decomposing the raw garbage, and a deodorizing unit 30 for deodorizing and discharging the odor generated when the raw garbage is decomposed in the decomposing unit 20.

The charging section 10 is partitioned by a case 11. A charging tank 12 is installed in the case 11. On the upper surface of the charging tank 12, a charging port 13 which is an opening through which food waste is charged is formed. Further, a lid 1 for opening and closing the charging port 13 is provided at the opening on the upper surface of the charging tank 12.
4 are provided. When the lid 14 is closed, a seal member (not shown) seals between the inlet 13 and the lid 14. Therefore, when the lid 14 is closed, the air in the loading tank 12 does not leak from between the loading port 13 and the lid 14.

A suction port 15 for sucking air from the outside is provided on the upper side surface of the charging tank 12. Air is sucked from the suction port 15 by the operation of the ventilation pump 32 described later. A transfer path 18 for transferring food waste to a decomposition tank 32 described later is connected to a side surface of a lower portion of the input tank 12. The garbage in the charging tank 12 is finely crushed by the crushing blade 17 which is rotationally driven by the motor 16. The crushed raw garbage is blown off by centrifugal force by the crushing blade 17 and transferred to the decomposition tank 32 through the transfer path 18.

In the disassembling section 20, the material is charged in the charging section 10.
The food waste carried in through the transfer path 18 is decomposed.
In the decomposition tank 22 arranged in the closed case 21,
Garbage is carried in and stored through the transfer path 18. A microorganism carrier 23 carrying aerobic bacteria resistant to high temperature is present in the decomposition tank 22, and the microorganism carrier 23 and the garbage are stirred by a stirring blade 24.

The stirring blade 24 is rotationally driven in conjunction with the driving of a stirring motor (not shown). The stirring motor is adapted to operate for a few minutes every predetermined time if the food waste processing apparatus 1 is powered on. Case 21 and decomposition tank 22
The space between and forms a heat circulation path 25. A temperature control heater 26 that controls the temperature of the microorganism carrier 23 in the decomposition tank 22 to a predetermined temperature is installed in the heat circulation path 25.
The heat generated by the temperature adjustment heater 26 is circulated in the heat circulation path 25 by the fan 27, and the temperature of the microorganism carrier 23 in the decomposition tank 22 is adjusted from around the decomposition tank 22.

A temperature sensor 28 is provided in the decomposition tank 22 to detect the temperature in the decomposition tank 22. The temperature detected by the temperature sensor 28 is transmitted to the heat generation control device 29. Then, the heat generation control device 29 controls the duty ratio of energization to the temperature control heater 26 so as to maintain the inside of the decomposition tank 22 at a predetermined temperature. In the present embodiment, the decomposition tank 22 has a predetermined temperature range, for example, 40 ° C., in which the insects and its eggs generated in the microorganism carrier 23 are killed, while the microorganisms carried by the microorganism carrier 23 are not killed. 60
Maintained in the ° C range.

The deodorizing section 30 is composed of a deodorizing device 31 for deodorizing the odor generated in the disassembling section 20, a ventilation pump 32 and the like. The ventilation pump 32 is installed outside the disassembling unit 20. The ventilation pump 32 communicates with the inside of the decomposition tank 32 via the exhaust passage 33, the deodorizing device 31, and the odor introducing passage 34. Therefore, due to the operation of the ventilation pump 32, the odor generated in the decomposition tank 22 is supplied to the deodorizing device 31 through the odor introducing passage 34. Then, by the catalyst activated at high temperature in the deodorizing device 31,
After the odorous components are adsorbed to be deodorized, they are exhausted from the exhaust port 35.

FIG. 2 is a diagram illustrating a specific structure of the deodorizing device 31, and FIG. 3 is a sectional view taken along line AA in FIG. The deodorizing device 31 includes an odor passage 313 formed by a hollow cylindrical outer wall 311 and a bottomed cylindrical inner wall 312 housed in the outer wall 311, and a catalyst carrier 31 installed in the inner wall 312.
4, heater 315 for heating catalyst carrier 314, inner wall 31
2 is an air passage 3 formed on the downstream side of the catalyst carrier 314.
16 and a heat exchanger 317 provided on the inner wall 312.

The outer wall 311 has a double wall structure, and a heat insulating material 318 such as glass wool is arranged between the double walls. Further, an odor introduction passage 34, which is a supply port for the odor from the decomposition tank 22, is connected to the bottom of the outer wall 311 on one end side of the deodorizing device 31. The inner wall 312 is the deodorizing device 31.
Is arranged with the opening facing the other end side of. On the opening side of the inner wall 312, a honeycomb-shaped catalyst carrier made of a ceramic such as cordierite or the like or a metal (alloy) such as SUS (stainless steel) carrying a three-way catalyst containing a noble metal such as platinum or rhodium as a main component. 314 is installed. The catalyst carrier 314 has a cylindrical shape, and a rod-shaped heater 315 for heating the catalyst carrier 314 is arranged in the center hole portion thereof. When heated by the heater 315, the catalyst carrier 314 becomes a high temperature of 250 ° C. or higher. The catalyst carrier 314 may have various shapes such as a pellet shape, a mat shape, and a net shape other than the honeycomb shape.

The heater 315 is inserted into the center hole of the catalyst carrier 314 through an insertion hole 311a formed in the other end of the outer wall 311. In the central hole of the catalyst carrier 314, the heater 315 is arranged in contact with the entire length of the catalyst carrier 314 in the axial direction. Then, the heat generated by the heater 315 is directly transferred to the catalyst carrier 314. Heater 315
A flange 315a is fixed to the end portion of the heater 315, and the flange 315a is screwed to the bottom portion of the outer wall 311 on the other end side from outside to fix the heater 315 to the deodorizing device 31. The flange 315a has
A material having high heat resistance and low thermal conductivity such as ceramics is used. Lead wire 31 for supplying current to the heater 315
5b extends from the end of the heater 315 on the flange 315a side, that is, the portion exposed to the outside of the deodorizing device 31, to the power supply.

The inner wall 312 is provided with a heat exchanger 317 for transferring the heat of the air in the air passage 315 to the odor in the odor passage 313. As shown in FIG.
The heat exchanger 317 has the odor passage 313 and the air passage 31.
6 is a corrugated fin type in which triangular or corrugated fins are formed on both wall surfaces of the inner wall 312 over the entire circumference of the inner wall 6. An exhaust passage 33 is connected to the bottom of the air passage 316 on the downstream side. Therefore, in this embodiment,
Both the odor introduction passage 34 and the exhaust passage 33 are provided on one end side of the deodorizing device 31.

Next, the operation of the garbage processor 1 of this embodiment will be described. The garbage put into the feeding tank 12 through the feeding port 13 is finely crushed by the crushing blade 17 which is rotationally driven by the motor 16. Then, it is blown off by the centrifugal force of the crushing blade 17, passes through the transfer path 18, and decomposes into the decomposition tank 22.
Be transferred to. The food waste sent to the decomposition tank 22 is stirred with the microorganism carrier 23 by the stirring blade 24. And the decomposition tank 2
In 2, the garbage is decomposed by the microbial carrier 23.

The ventilation pump 32 sucks fresh air from the outside of the food waste processing apparatus 1 into the decomposition tank 22 through the transfer port 18 from the intake port 15 and also produces an odor generated when the food waste is decomposed. Is discharged from the decomposition tank 22 to the outside through the deodorizing device 31. Decomposition tank 22 by ventilation pump 32
The odor introduced from the one end side of the deodorizing device 31 passes through the odor passage 313 to the other end side of the deodorizing device 31. Then, it is introduced into the catalyst carrier 314 from the other end side of the deodorizing device 31. The catalyst carrier 314 is heated to a high temperature of 250 ° C. or higher by the heater 315 arranged in the center hole of the catalyst carrier 314, and the odor is carried by the catalyst carrier 314 when passing between the catalyst carriers 314, Odor components are adsorbed and deodorized by the catalyst activated at high temperature. The deodorized air has a high temperature, and when the heat of the air passes through the air passage 316, it passes through the heat exchanger 317,
The odor passing through the odor passage 313 is transmitted. That is,
Before the odor passes through the catalyst carrier 314, the odor passage 313
Preheated inside.

As described above, in the present embodiment, the odorous components generated during the decomposition of food waste are adsorbed on the catalyst activated at high temperature to deodorize. Therefore, the reliability of deodorization can be improved. In the catalyst activated at high temperature, the higher the temperature of the odor supplied to the catalyst, the higher the catalytic reactivity and the greater the deodorizing effect. In the present embodiment, the odor introduced to the one end side in the deodorizing device 31 is preheated by the heat exchanger 317 before passing through the catalyst carrier 314. Therefore, the deodorizing effect can be enhanced.

The odor is preheated by the high temperature air after passing through the high temperature activated catalyst. Therefore, a special heater for preheating the odor is not required and the heat of the exhaust air can be used, so that the deodorizing device 31 can be saved in power. In particular, in this embodiment, since the outer wall 311 has a double structure and the heat insulating material 318 is arranged therein,
Since the heat of the odor preheated in the odor passage 313 is released to the outside of the deodorizing device 31 and the odor can be efficiently preheated, the power saving effect becomes remarkable.

Further, in order to improve the deodorizing performance of the catalyst carried on the catalyst carrier 314, it is necessary to heat the catalyst carrier 314 to a high temperature. In the present embodiment, the heater 315 that heats the catalyst carrier 314 is arranged in contact with the central hole of the catalyst carrier 314 over the entire axial length of the catalyst carrier 314. Therefore, the contact area between the heater 315 and the catalyst carrier 314 can be increased. Also, the heater 31
The heating from 5 to the catalyst carrier 314 is directly performed without passing through the inner wall 312 where the catalyst carrier 314 is arranged. Therefore, it becomes easy to efficiently transfer the heat from the heater 315 to the catalyst carrier 314 and heat the catalyst carrier 314 to a high temperature.

In this embodiment, the outer wall 311, the inner wall 312, and the catalyst carrier 314 are cylindrical, and the rod-shaped heater 315 is inserted in the central hole of the catalyst carrier 314.
Therefore, heating of the catalyst carrier 314 from the heater 315 and heat transfer from the air passage 316 to the odor passage 313 can be uniformly and efficiently performed. Further, in the present embodiment, since both the odor introducing passage 34 and the exhaust passage 33 are provided on one end side of the deodorizing device 31, the heater 315 can be detachable from the other end side. . Further, since the heater 315 can be easily removed, the maintenance and inspection work can be easily performed, and the reliability of the heater 315 can be maintained. Further, in the present embodiment, a current is supplied to the heater 315. The lead wire 315b is connected to the exposed portion of the deodorizing device 31. Therefore,
Since the lead wire 315b is not arranged in the deodorizing device 31 which has a high temperature, the reliability of the heater 315 can be secured.
(Other Embodiments) FIG. 4 is a sectional view showing another embodiment of the deodorizing device of the present invention. In the embodiment shown in FIG. 4, the air passage 316 portion of the inner wall 312 ′ has a small diameter, and the air passage 316 is provided outside the inner wall 312 ′ having the small diameter.
The present embodiment is different from the first embodiment in that a beam-shaped span fin 317 'extending in a direction perpendicular to the axial direction is provided. Even with such a configuration, heat can be exchanged with the odor in the odor passage 313 from the high temperature air that has passed through the catalyst carrier 314. Further, the heater 315 is the catalyst carrier 3
14 is arranged so that it can be heated directly, and the deodorizing device 3
It is also similar to the first embodiment in that it is detachably arranged in the first embodiment. Therefore, also in the embodiment shown in FIG. 4, the same effect as that of the first embodiment can be obtained.

Further, in the first embodiment, the heater 315 is arranged in contact with the catalyst carrier, but in order to improve the heating efficiency of the catalyst carrier 314, it is not always necessary to arrange it in contact with it. That is, even if the heater 315 is arranged close to the catalyst carrier 314, the heating efficiency of the catalyst carrier 314 can be improved.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a food waste processing device according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a specific structure of the deodorizing device in FIG.

FIG. 3 is a cross-sectional view taken along the line AA of the deodorizing device in FIG.

FIG. 4 is a vertical cross-sectional view showing a specific structure of a food waste processing device according to another embodiment of the present invention.

[Explanation of symbols]

31 ... Deodorizing device, 311 ... Outer wall, 311a ... Insertion hole, 3
12 ... Inner wall, 313 ... Odor passage, 314 ... Catalyst carrier, 3
15 ... Heater, 315a ... Flange, 315b ... Lead wire, 316 ... Air passage, 317 ... Heat exchanger, 318 ... Heat insulating material.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4D002 AB02 BA04 BA05 CA07 DA25                       EA05 GA03 GB11 HA01                 4D012 CA09 CB01 CB02 CB07 CE01                       CF08 CG03 CH05 CK03                 4D048 AA22 AB01 AB05 BA30Y                       BA33Y BA39Y BB01 BB02                       BB07 BD01 CA07 CC38 CC43                       CC53 EA04                 4G069 AA01 AA03 BA13B BA17                       BC71B BC75B CA07 CA17                       DA06 EA02Y EA18

Claims (4)

[Claims] 1. An odor passage (313) formed by an outer wall (311) and an inner wall (312), and a catalyst carrier (3) arranged in the inner wall (312) and carrying a catalyst for adsorbing odor components. 314) and a heater (315) for heating the catalyst carrier (314)
And an air passage (316) formed in the inner wall (312) on the downstream side of the catalyst carrier (314), the heater (315) directly heats the catalyst carrier (314). A deodorizing device characterized by being placed as much as possible. 2. An odor passage (313) formed by an outer wall (311) and an inner wall (312), and a catalyst carrier (3) arranged in the inner wall (312) and carrying a catalyst for adsorbing odor components. 314) and a heater (315) for heating the catalyst carrier (314)
And an air passage (316) formed in the inner wall (312) on the downstream side of the catalyst carrier (314), the deodorizing device being provided at one end of the outer wall (311) and externally introducing the odor passage. Odor introduction path (34) for introducing odor to (313)
And an exhaust port (33) provided on one end side of the inner wall (312) for discharging deodorized air to the outside, and the heater (315) includes the outer wall (311) and the inner wall (312). A deodorizing device, which is removably installed on the catalyst carrier (314) from the other end side. 3. The deodorizing device according to claim 2, wherein the heater (315) is arranged so as to directly heat the catalyst carrier (314). 4. The outer wall (311) and the inner wall (31)
2) and the catalyst carrier (314) are cylindrical, and the heater (315) is inserted in the center of the catalyst carrier (314). Deodorizing device described in.