JPH10103864A - Garbage processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garbage processor capable of deodorizing odor in a drying chamber and lowering the odor when a cover is opened by recirculating deodorized gas into the drying chamber. SOLUTION: A garbage processor comprises a drying chamber 1 for accommodating and drying garbage, a blower mechanism 13 for supplying hot air to the drying chamber 1, and a catalyst deodorizer 2 having a catalyst layer 6 for deodorizing the odor component of odor gas and a heater 7. In the garbage processor, are provided in the downstream side of the catalyst deodorizer 2 a recirculating pipe 8b for returning the deodorized gas to the drying chamber 1 and recirculating it and an exhaust pipe 8c for exhausting outside the deodorized gas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a garbage processing machine. More specifically, the present invention relates to a garbage disposer capable of deodorizing the odor in the drying chamber and reducing the odor when the lid is opened by recirculating the gas after deodorization (hereinafter, referred to as deodorizing gas) into the drying chamber.

[0002]

2. Description of the Related Art Conventionally, as a garbage processing machine for drying garbage, a drying chamber for storing and drying garbage, a heating means for heating the drying chamber, and a cooling section for condensing steam discharged from the drying chamber. And a deodorizer for deodorizing odor components of odor gas. In such a kitchen waste treatment machine, the kitchen waste is heated and dried by the drying heater as the heating means, and the generated odor gas is passed through the catalyst heating heater and the catalyst of the deodorizer. And then mixed with low-temperature ambient air by a cooling fan to reduce the temperature before discharging to the outside of the main body.

[0003] Further, the odor of the residue at the time of opening the lid is unpleasant because it is accompanied by a strong odor in addition to the odor inherent in kitchen garbage. Such a residual odor is softened by ozone deodorization in the case of a conventional kitchen waste treatment machine. Specifically, it is softened by using an ozone generator, using a special spraying mechanism or the like for spraying a chemical for ozone deodorization, or by manually spraying the inside of the drying chamber.

[0004]

However, ozone deodorization generally has a low deodorizing effect, and it is difficult to completely deodorize residual odor when the lid is opened. On the other hand, if the ozone concentration is increased, there is a problem that the irritating odor of ozone itself becomes strong.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is an object of the present invention to recirculate deodorized gas into a drying chamber to deodorize the odor inside the drying chamber and reduce the odor when the lid is opened. It is an object of the present invention to provide a garbage disposer capable of performing the above.

[0006]

According to the present invention, there is provided a garbage processing machine,
A garbage disposer comprising a drying chamber for storing and drying the garbage, a blowing means for blowing hot air into the drying chamber, and a deodorizer having a catalyst and a heater for deodorizing odor components of odor gas, Downstream of the deodorizer, a recirculation pipe for returning the deodorized gas to the drying chamber for recirculation and an exhaust pipe for exhausting the deodorized gas to the outside are provided.

[0007] It is preferable that an adjustment valve for changing the ratio of the deodorizing gas flowing through the recirculation pipe and the exhaust pipe is provided downstream of the deodorizer.

[0008] It is preferable that the ratio of the deodorizing gas flowing through the recirculation pipe and the exhaust pipe is approximately 1: 1.

According to the present invention, a part of the high-temperature deodorizing gas immediately after passing through the catalyst and being deodorized is returned to the drying chamber to dry the garbage. In this case, since the deodorizing gas is recirculated into the drying chamber, the odor in the drying chamber is forcibly pushed out to the deodorizer, and as a result, the odor in the drying chamber can be deodorized. In addition, while the kitchen waste is being dried, the odor inside the drying chamber is constantly exhausted, so that the odor during the drying or when the lid is opened after the drying is completed is reduced.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a kitchen waste disposal machine according to the present invention. 1 is a cross-sectional explanatory view showing one embodiment of the garbage disposal machine of the present invention, FIG. 2 is a plan view showing the arrangement of a catalytic deodorizer and a blowing mechanism inside a lid of FIG. 1, and FIG. 3 is a garbage disposal of FIG. FIG. 4 is a block diagram showing a control system of the machine, FIG. 4 is a flowchart showing an example of an operation method of the kitchen waste treatment machine of FIG. 1, and FIG. 5 is a graph showing changes in the drying temperature and the catalyst temperature of the kitchen waste treatment machine of FIG.

The kitchen waste treatment machine shown in FIG. 1 stores a kitchen garbage such as garbage and dries it, a blowing mechanism 13 for blowing hot air into the drying chamber 1, and a drying chamber 1. And a catalyst deodorizer 2 for deodorizing generated steam and odor components. The drying chamber 1 is provided in the processing machine main body 3, and a processing container 4 containing kitchen waste is detachably mounted in the drying chamber 1. The upper part of the drying chamber 1 has a lid 5
The inside of the drying chamber 1 is kept airtight by a packing 1a. The material of the processing container 4 is preferably stainless steel which is hard to corrode or a material coated with polytetrafluoroethylene so that dust is not adhered.

As the catalyst deodorizer 2, a honeycomb-shaped catalyst layer 6 and a catalyst heater 7 as a heating section are arranged in series with a case 8 made of stainless steel or the like having good thermal conductivity and corrosion resistance. What is covered with a heat insulating material 23 is used. The catalyst deodorizer 2 is installed inside the lid 5 outside the drying chamber 1. The catalyst layer 6,
Oxidation catalysts such as platinum-based, platinum-palladium-based, and nickel-based have a honeycomb structure. The reason why the catalyst is used for deodorization is that the treatment can be carried out without increasing the temperature so much, that it is easy to maintain and that the treatment capacity is high. As the heater 7, a sheathed heater formed in a coil shape is used.

As shown in FIG. 2, a suction pipe 8a is connected to an end of the case 8 upstream of the heater 7, while a suction pipe 8a is connected to an end of the case 8 downstream of the catalyst layer 6. Is provided with a recirculation pipe 8b for returning the deodorized gas to the drying chamber 1 for recirculation, and an exhaust pipe 8c for exhausting the deodorized gas to the outside.

Further, downstream of the catalytic deodorizer 2, an adjusting valve (not shown) for changing the ratio of the deodorizing gas flowing through the recirculation pipe 8b and the exhaust pipe 8c is provided.

The blower mechanism 13 may include a motor 14 mounted on the lid 5, a hot air fan 15 and a cooling fan 16. The cooling fan 16 has two functions of air-cooling the motor 14 and forcibly exhausting the deodorizing gas exhausted from the exhaust pipe 8c of the catalyst deodorizer 2 to the outside of the processing machine. Since the motor 14 of the blower mechanism 13 is arranged at a position shifted in the horizontal direction with respect to the heater 7 of the catalyst deodorizer 2, the motor 14 is easily cooled by the cooling fan 16.

Although not shown, a stirring blade and a fixed blade are provided inside the processing container 4 of the present embodiment, similarly to the conventional garbage processing machine. The garbage is stirred and crushed by rotating the stirring blade with a motor or the like. Therefore, it is possible to promote the drying of the garbage and to reduce the size of the garbage after the drying process.

In the heating and drying of the garbage in the present embodiment, first, the heater 7 is heated and the hot air fan 15 is operated to allow the drying between the drying chamber 1 and the catalyst deodorizer 2 in the direction of the arrows in FIGS. Force circulation of air. The air (warm air) heated by the heater 7 is blown into the drying chamber 1 by the warm air fan 15 to dry the kitchen garbage. The odor gas generated during drying of the garbage is forcibly sent to the catalytic deodorizer 2 through the suction pipe 8a by being pushed by the warm air introduced into the drying chamber 1,
It is heated to about 500 ° C. and deodorized in the catalyst layer 6.

The high-temperature gas immediately after being deodorized in the catalyst layer 6 advances in two paths.

That is, a part of the deodorized gas is returned to the drying chamber 1 through the recirculation pipe 8b, and the hot air fan 15
The air is blown into the drying chamber 1 to dry the kitchen waste. In this case, since the deodorizing gas is recirculated inside the drying chamber 1, the odor inside the drying chamber 1 is diluted and forcedly pushed out to the catalytic deodorizer 2.
Internal odor can be deodorized. In addition, while the kitchen waste is being dried, the odor inside the drying chamber is constantly exhausted, so that the odor during the drying or when the lid is opened after the drying is completed is reduced. In addition, the drying efficiency can be improved by using a high-temperature (200 ° C. or higher) deodorizing gas.

The remaining deodorized gas is discharged to the outside of the catalytic deodorizer 2 through the exhaust pipe 8c, and then mixed with ambient air by the cooling fan 16 to adjust the temperature to 60.degree.
It is forcibly exhausted to the outside of the processing machine through an exhaust port 5a formed on the side surface of the lid 5.

The ratio of the deodorizing gas flowing through the recirculation pipe 8b and the exhaust pipe 8c is controlled by the regulating valve (not shown) by the amount of garbage and the state of garbage (especially,
Since it can be appropriately changed depending on conditions such as wetness, the kitchen waste can be suitably dried. When it is desired to shorten the drying time, the recirculation pipe 8b is used.
What is necessary is just to increase the deodorizing gas flowing on the side.

When drying standard kitchen waste,
The ratio of the deodorizing gas flowing through the recirculation pipe 8b and the exhaust pipe 8c may be set to about 1: 1.

In this embodiment, an example in which a regulating valve is provided has been described. However, the present invention is not limited to this, and the proportion of the deodorizing gas is set to a predetermined ratio, for example, 1: 1 without providing the regulating valve. It may be fixed to a degree.

In the kitchen waste treatment machine of the present embodiment, there is almost no waste of electric power because drying of the kitchen waste and heating of the catalyst are performed by one heater.

The kitchen waste disposal apparatus of this embodiment eliminates the need for a special mechanism for deodorizing the odor in the drying chamber 1 by using the existing catalyst. Therefore, the manufacturing cost can be reduced.

As a method of operating the kitchen waste disposal machine of the present embodiment,
There are three operation methods that can suitably respond to changes in conditions such as the amount of kitchen waste. These operation methods can be applied not only to the kitchen waste processing machine of the present embodiment but also to a kitchen waste processing machine conventionally used. Hereinafter, three operation methods will be described in order.

Operation method (1) Conventionally, in a garbage processing machine provided with a switch for selecting a processing course according to the amount of garbage, the processing time is changed in each course, but in the operation method (1), the processing time is changed. In addition, by changing the way of pulverization and drying according to the amount of garbage by using a selection switch (not shown), it is possible to perform optimal processing for each amount of garbage. Specifically, the stirring speed, the drying temperature, and the air volume are changed in each course.

As shown in Table 1, there are three courses, "small", "standard" and "large", and parameters such as a stirring speed, a drying temperature and a ventilation flow rate are set according to each course.

[0029]

[Table 1]

In this operation method (1), the processing course is divided into "small", "standard" and "large", and not only the processing time but also the stirring speed, the drying temperature and the ventilation amount are set. Therefore, it is possible to carry out the optimal treatment with each amount of garbage.

Each parameter in Table 1 is determined as follows.

Stirring speed and number (stirring sequence) Generally, the higher the stirring speed and the number of times, the shorter the drying time.

2. In general, the higher the stirring speed and number of times,
Garbage tends to be powdery. And, as the powder becomes powdery, it circulates through the inside of the container, and the catalyst is clogged, so that the deodorizing ability tends to be lowered.

3. In general, the lower the stirring speed and number of times,
Garbage is easily crushed. And it becomes easy to stick to a container, so that it collapses.

4. Therefore, in the case of a small amount of garbage (about 350 g) and a standard amount of garbage (700 g), the drying speed is fast, so the stirring speed and the number of garbage are large (about 1.2 kg).
And drying time can be further reduced. However, if the rotation speed is 60 rpm (ON for 10 seconds / OFF for 75 seconds) or more, the garbage tends to become powdery, circulates inside the container, clogs the catalyst, and tends to cause a reduction in deodorizing ability.

5. On the other hand, in the case of a large amount of garbage, the drying progress is slow, so in the initial operation (within 4 hours), if the stirring speed and number of times are set to the same level as the standard amount of garbage, the garbage tends to be crushed and stick to the container, so it is necessary to increase the stirring speed and number . After that, since the drying proceeds and the garbage is close to the standard amount, the stirring speed and the number of times are returned to the standard amount.

About the drying temperature Generally, the higher the drying temperature, the shorter the drying time.

2. In the case of a small amount of garbage, the drying proceeds quickly, so if the drying temperature is set to the same level as the standard amount of garbage (about 130 ° C.), the temperature is too high and a burning smell is likely to occur, so the temperature is set a little lower (about 110 ° C.).

3. In the case of a large amount of garbage, the drying proceeds slowly, and if the drying temperature is set to the same level as the standard amount of garbage (about 130 ° C.), the drying time becomes longer.

Ventilation flow rate By the ventilation, the residual water vapor inside the drying chamber 1 is released to the outside.

2. In the case of a small amount of garbage, the amount of generated steam is small, but if the ventilation flow rate is too small, the amount of remaining steam in the drying chamber 1 is large, and the drying time is extended. Even if the ventilation flow rate is excessive, the generation of water vapor is not promoted, and the vaporization is performed at a constant rate, so that an appropriate ventilation flow rate is required.

3. In the case of a large amount of garbage, a large amount of steam is generated, and it is necessary to discharge this to the outside.

According to the above-mentioned operation method (1), the processing course is divided into a small quantity, a standard quantity, and a large quantity, and not only the processing time but also the stirring speed, the drying temperature and the ventilation flow rate are set. Optimum processing for each kitchen waste is possible.

In particular, in a small-volume course, drying can be performed at a low temperature and in a short time, so that power can be saved. Further, too much drying causes less garbage to stick to the processing container 4 and generate less burning smell.

On the other hand, in the large-volume course, since the number of times of stirring is reduced and the stirring speed is increased, the garbage is less likely to be crushed and adhere to the processing container 4. Further, since the drying temperature is set higher, the drying time can be reduced.

Operation method (2) In this operation method (2), the drying time, the drying temperature, the stirring control and the fan control are changed depending on the difference in the power supply frequency.

In the conventional garbage processing machine, the only factor that changes the control sequence such as the drying temperature or the stirring speed is the amount of garbage. Therefore, when the commercial frequency changes, the timing of stirring and the like is not changed. When the commercial frequency changes, the number of revolutions (speed) of a hot-air fan, a stirring blade, or the like using the above-mentioned method may change, and optimum control may not be performed.

Therefore, in the operation method (2), when the commercial frequency is changed, by changing the stirring timing, the drying time and the temperature, the optimum control becomes possible, and the garbage is not dried or wasted due to overheating. Power consumption can be suppressed.

A control system for executing the operation method (2) is shown in a block diagram of FIG. In FIG. 3, on the input side, there are a frequency detecting means for detecting the frequency and a drying temperature detecting means 21 (see FIG. 1), which are respectively connected to the control means 22 (see FIG. 1). The control means 22 is connected to the heater 7 on the output side, the motor 15 for the hot air fan, and the stirring motor.

In the above control system, when the commercial frequency is 50
Hz or 60 Hz is determined by the frequency detecting means. Next, one of the modes in Table 2 is selected, and an operation corresponding to each frequency is executed as shown in the flowchart of FIG.

[0051]

[Table 2]

As can be seen from Table 2 and FIG.
When using 60 Hz with respect to z, the warm air fan and the stirring speed change with the change in the rotation speed of the motor. 60
At Hz, the rotation speed of the hot air fan increases, and the intake air flow rate increases. Therefore, since a large amount of air is drawn into the processing container, the drying temperature is set higher than usual in the early stage of the drying process to promote the drying of the garbage.

According to the above-mentioned operation method (2), even if the commercial frequency is changed, optimal control is always possible, and wasteful power consumption due to undried or overheated garbage can be suppressed.

Operation method (3) In this operation method (3), the drying temperature is changed as the drying process proceeds.

In the conventional kitchen waste disposal machine, two heaters, a drying heater and a catalyst heater, are required, and the temperature is controlled by each heater, so that power is wasted.

In the garbage processing machine of the present embodiment, the drying of the garbage and the heating of the catalyst are performed by a single heater 7, so that the power is hardly wasted.

However, the drying temperature of the kitchen waste is set to, for example, 120
When the heater is controlled at ℃, as the degree of drying of the garbage progresses, the output required to maintain 120 ℃ decreases, and accordingly, the temperature of the catalyst also decreases, and as a result, the desired deodorizing effect cannot be obtained. There is a case where the problem arises.

Therefore, in the operation method (3), if the degree of drying of the garbage advances, the drying temperature is increased to, for example, 140 ° C., and the heater output is increased to prevent the temperature of the catalyst from lowering and to keep the catalyst temperature constant. That makes it possible.

A control system for executing the operation method (3) is a system in which the blocks of the input-side drying temperature detecting means 21, the control means 22, and the heater 7 in the block diagram of FIG. 3 are connected. .

According to this operation method (3), as shown in the graph of FIG.
Although the catalyst temperature T ₁ gradually decreases with the decrease in the output of
When OFF time for ON-OFF current to the heater 7 becomes more than the predetermined time (time t ₁ in FIG. 5), dried temperature T ₂
14 due to the intermittent change of ON-OFF of the heater 7
Raise to 0 ° C.

Thus, the catalyst temperature is set to the optimum operating temperature (4
(About 00 ° C.).

According to the above operating method (3), by varying the drying temperature, the temperature of the catalyst becomes constant, and deodorization can be performed efficiently.

As for the operation method (3), a garbage disposal machine previously proposed by the present applicant (Japanese Patent Application No. 8-1315).
No. 78), that is, the case of the catalytic deodorizer is protruded from the lower part of the lid, and the same process is performed using a garbage disposer that generates a hot air fan by directly blowing the air of the hot air fan onto the case. Deodorization can be performed efficiently.

[0064]

According to the present invention, the odor inside the drying chamber can be deodorized by returning a part of the deodorizing gas passing through the catalyst to the drying chamber and recirculating it. In addition, while the kitchen waste is being dried, the odor inside the drying chamber is constantly exhausted, so that the odor during the drying or when the lid is opened after the drying is completed is reduced.

Moreover, by using the existing catalyst, a dedicated device for deodorizing the odor in the drying chamber becomes unnecessary. Therefore, the manufacturing cost can be reduced.

Further, the drying efficiency can be improved by using a high-temperature (200 ° C. or higher) deodorizing gas.

Moreover, the garbage disposer of the present invention can be simplified in configuration by using one heater, and the cost can be reduced by reducing the number of parts. In addition, the thermal efficiency of the heater increases, and heating with little waste can be performed.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing an embodiment of a kitchen waste disposal machine according to the present invention.

FIG. 2 is a plan view showing an arrangement of a catalyst deodorizer and a blowing mechanism inside a lid of FIG.

FIG. 3 is a block diagram showing a control system of the garbage processing machine of FIG.

FIG. 4 is a flowchart illustrating an example of an operation method of the kitchen waste treatment machine of FIG. 1;

FIG. 5 is a graph showing a change in a drying temperature and a catalyst temperature of the garbage processing machine of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drying room 2 Catalyst deodorizer 5 Lid 6 Catalyst layer 7 Heater 8a Suction pipe 8b Recirculation pipe 8c Exhaust pipe 13 Blow mechanism

Continuation of the front page (51) Int.Cl. ⁶ Identification symbol FI B09B 5/00 ZAB (72) Inventor Jun Yoshida 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Invention Person Ken Fujita 2-5-5-Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Akihiro Yoneyama 2-5-5-Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A garbage disposal comprising a drying chamber for storing and drying garbage, a blowing means for blowing hot air into the drying chamber, and a deodorizer having a catalyst and a heater for deodorizing odor components of odor gas. Machine, on the downstream side of the deodorizer,
A garbage disposal machine comprising a recirculation pipe for returning the deodorized gas to the drying chamber for recirculation and an exhaust pipe for exhausting the deodorized gas to the outside. 2. An adjusting valve for changing the ratio of deodorized gas flowing through the recirculation pipe and the exhaust pipe, respectively, is provided downstream of the deodorizer.
A garbage disposal machine as described. 3. The kitchen waste treatment machine according to claim 1, wherein the ratio of the deodorized gas flowing through each of the recirculation pipe and the exhaust pipe is approximately 1: 1.