JPH09103759A - Crude refuse treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the degradation in ambient environment by lessening heat loss as far as possible and decreasing the discharge quantity that the exhaust gases contg. a large amt. of moisture is discharged outside. SOLUTION: This crude refuse treating device is constituted to be packed with crude refuse treating materials 2 into a crude refuse treating vessel 1 and to execute the decomposition treatment of the crude refuse put into this crude refuse treating vessel 1 by these crude refuse treating materials 2. The upper part of this crude refuse treating vessel 1 is provided with a discharge chamber 4. This discharge chamber 4 is provided with a discharge section 5 for discharging a part of the waste gases outside and a return section 6 for returning a part of the waste gases. The lower part of the crude refuse treating vessel 1 is provided with an air suction section 3 for mixing part of the waste gases returned from this return section 6 and the outdoor air and supplying the mixture to the lower part in the crude refuse treating vessel 1. This air suction section 3 is provided with a condensing section 7 for condensing and removing moisture from the gaseous mixture formed by mixing the outdoor air and part of the returned waste gases.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste processing apparatus for decomposing food waste in a food waste processing tank.

[0002]

2. Description of the Related Art Conventionally, there has been known a garbage disposal device which fills a garbage disposal tank with a garbage disposal material and decomposes the garbage disposed in the garbage disposal tank by the garbage disposal material. There is. In this conventional food waste processing device, bacteria are made to live in the food waste processing material filled in the food waste processing device, and the activity of the bacteria decomposes the food waste to dispose of it. The outside air is supplied to the garbage processing tank in order to supply oxygen to the bacteria inhabiting the processing material. Then, a heater is provided in the middle of the supply path for supplying the outside air into the food waste processing tank, and the outside air is heated by the heater and supplied as warm air so that the decomposition processing in the food waste processing tank is activated. I have to.
On the other hand, the exhaust containing moisture, heat, and odor generated by the decomposition processing of the food waste in the food waste treatment tank was exhausted to the outside through an exhaust passage having one end opened in the food waste treatment tank.

[0003]

In the former conventional example described above, a heater is provided in the intake passage, and the outside air is heated by the heater to be supplied as warm air into the garbage processing tank.
Further, since the exhaust gas is directly exhausted to the outside, there is a problem that the heat loss is large. In addition, the exhaust air discharged to the outside contains a large amount of moisture generated by the decomposition process, and the moist exhaust air is discharged to the surroundings of the garbage processing device, and odors are also discharged to the surroundings of the garbage processing device. Therefore, there is a problem that the surrounding environment is deteriorated. In addition, when the food waste contains a large amount of water, when the food waste is decomposed by the food waste treatment material, there is a problem that the decomposition treatment efficiency is low, and the decomposition treatment takes time. Further, conventionally, since the outside air is supplied to the upper part of the food waste processing tank, there is a problem that air cannot be sufficiently supplied to the lower part of the food waste processing material filled in the food waste processing tank.

An object of the present invention is to solve the above-mentioned problems of the conventional example, and to recover heat by circulating a part of exhaust gas which has become high temperature due to heat generated by decomposition treatment. Reduce heat loss as much as possible, and reduce the amount of exhaust that contains a large amount of moisture to the outside to prevent the deterioration of the surrounding environment, and also effectively supply air to food waste processing materials. In addition, the water contained in the garbage is effectively drained to effectively treat the garbage with the garbage processing material, and the air volume to the deodorizer is small, resulting in downsizing. It is to provide a possible garbage processing device.

[0005]

In the food waste processing apparatus of the present invention, the food waste processing tank 1 is filled with the food waste processing material 2, and the food waste processing material 2 is put into the food waste processing tank 1. In a food waste processing apparatus for decomposing processed food waste, an exhaust chamber 4 is provided in an upper part of the food waste processing tank 1, and an exhaust unit 5 for discharging a part of exhaust gas to the exhaust chamber 4 and an exhaust gas And a return unit 6 for returning a part of the exhaust gas returned from the return unit 6 to the lower part of the food waste processing tank 1 and the outside air to be mixed and supplied to the lower part of the food waste processing tank 1. And a condensing section 7 for condensing and removing water from the mixed gas obtained by mixing the outside air with a part of the returned exhaust gas. is there. With such a configuration, part of the exhaust gas and the outside air are mixed to generate a high temperature, and the intake air is sucked into the food waste processing tank 1 from the intake portion 3 at the bottom of the food waste processing tank 1. Bacteria inhabiting the food waste processing material filled in 1 are activated to decompose the food waste, and the exhaust gas containing heat and odor generated by the decomposition processing of the food waste disposal material of the food waste disposal tank 1 Although collected in the upper exhaust chamber 4, a part of the exhaust collected in the exhaust chamber 4 is exhausted to the outside from the exhaust unit 5, but the other part of the exhaust collected in the exhaust chamber 4 is returned from the return unit 6. The heated air is mixed with the outside air supplied from the intake section 3 and heats the outside air.
Thus, the moisture in a part of the exhaust gas returned by the above is coagulated and removed, and the heated dry air is supplied again from the lower part of the food waste treatment tank 1.

Further, a lower chamber 9 is provided below the food waste processing tank 1 and is partitioned from the food waste processing tank 1 by a perforated plate 8.
It is also preferable to dispose the intake part 3 having the condensing part 7 in the lower chamber 9 and to provide the lower chamber 9 with a drainage part 10 for draining water accumulated in the lower part of the lower chamber 9. With such a configuration, the raw garbage thrown into the raw garbage processing tank 1 is drained and discharged to the lower chamber 9, and the water aggregated by the aggregating means 7 is drained to the lower chamber 9, The water drained to the lower chamber 9 will be drained to the outside from the drainage unit 10.

It is also preferable to provide a deodorizer 11 in the exhaust unit 5. With such a configuration, the deodorizer 11
The amount of airflow to the air is small and it can be miniaturized.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a schematic view of a food waste processing device. A lower chamber 9 is provided below the processing chamber 12 of the raw garbage processing tank 1, and the lower chamber 9 and the processing chamber 12 are separated by a perforated plate 8. A stirring blade 13 is rotatably provided inside the processing chamber 12, and the processing unit 12 is filled with the raw garbage processing material 2. The raw garbage treating material 2 filled in the raw garbage treating tank 1 is like a sawdust-like wood strip called a biochip in which microorganisms inhabit, and is conventionally known as the raw garbage treating material 2. Wood chips (for example, Japanese Patent Publication No. 2-10398, Japanese Patent Publication No. 30760)
No., Jikkou 3-22385, etc.) can be used. The upper part of the garbage processing tank 1, that is, the upper part of the processing chamber 12 is the exhaust chamber 4
It has become. Although not shown in the drawings, the top surface of the food waste processing tank 1 is provided with an input port for inputting food waste, and a lid (not shown) is provided on the input port so as to be openable and closable.

In the exhaust chamber 4 provided in the upper part of the garbage processing tank 1, an exhaust part 5 for discharging a part of the exhaust gas to the outside and a part of the exhaust gas mixed with the outside air are returned to the intake part 3. And a return unit 6 for the purpose. Exhaust passage 1 communicating with the exhaust unit 5
An exhaust fan 20 and a deodorizer 11 are provided at 4. The lower chamber 9 is provided with an intake section 3, and the intake section 9 is provided with a condenser section 7 such as a condenser. The intake section 3 having the condenser section 7 and the return section 6 are connected by an intake pipe 15. One end of an outside air supply pipe 15a is connected to the intake pipe 15, and a valve 16 is connected to the outside air supply pipe 15a.
Is provided. Further, the intake pipe 15 is provided with an intake fan 17.

The lower half of the lower chamber 9 serves as a water reservoir 21, and the lower chamber 9 is provided with a drain 10 having a drain 18. Then, when disassembling the food waste that has been input from the input port on the upper part of the food waste disposal tank 1, the food waste is decomposed by the activity of the bacteria that inhabit the food waste disposal material 2. In this case, by rotating the stirring blade 13 at regular intervals, the raw garbage processing material 2 and the raw garbage are stirred and mixed to effectively decompose the raw garbage. Heat and odors are generated by the decomposition processing of the food waste, and the exhaust gas containing the heat and the odor is collected in the exhaust chamber 4 in the upper part of the food waste processing tank 1. Here, the exhaust fan 20 and the intake fan 17 are operated at regular intervals. When the exhaust fan 20 is operated, a part of the exhaust collected in the exhaust chamber 4 provided in the upper part of the garbage processing tank 1 is exhausted to the outside from the exhaust unit 5. Exhaust exhausted from the exhaust unit 5 is deodorized by the deodorizer 11 and exhausted to the outside.

When the intake fan 17 is operated, a part of the exhaust gas collected in the exhaust chamber 4 is returned from the return unit 6 to the intake unit 3 via the intake pipe 15, and the outside air supply pipe 15 is also supplied.
The outside air is sucked into the intake pipe 15 from a, and the sucked outside air and a part of the exhaust gas returned from the return unit 6 are mixed and sent to the intake unit 3. Here, the valve 16 provided in the outside air supply pipe 15a adjusts the mixing ratio of the outside air and the exhaust gas returned. The amount of outside air sucked in is the amount of oxygen required for the decomposition processing (fermentation) of food waste, and the effect of the return exhaust due to the temperature difference between the return exhaust and the outside air when the return exhaust and the outside air are mixed It is adjusted by making it possible to dehumidify physically. In this way, when the outside air and a part of the exhaust gas returned from the return unit 6 are mixed and sent to the intake unit 3, the return air is returned due to the temperature difference between the returned exhaust gas and the outside air by the condensation unit 7 provided in the intake unit 3. The exhaust gas is condensed and dehumidified, and at the same time the temperature is higher than the outside air temperature.
2 through the multiple holes in the perforated plate 8, which is the bottom of the processing chamber 1.
2 will be supplied. As described above, by supplying the high-temperature dry air, it is possible to effectively decompose the food waste with the food waste processing material. Further, by supplying the dry air from the lower part of the processing chamber 12 containing the raw garbage processing material 2, the dry air can be uniformly supplied from the lower part to the upper part of the processing chamber 12, and the decomposition processing in each part can be effectively performed. Can be done.

Here, when the food waste contained in the processing chamber 12 contains a large amount of water, it flows down into the lower chamber 9 through many holes of the perforated plate 8 at the bottom of the processing chamber 12, Lower chamber 9
Collects in the water reservoir 21 at the bottom of the. Further, the condensed water that has been condensed and removed in the aggregating unit 7 also collects in the water reservoir 21 below the lower chamber 9. Then, when the water in the water reservoir 21 reaches a certain level or higher, the water is drained from the drain 10 to the outside. Since the drain portion 10 is provided with the drain 18 as shown in the figure, the lower chamber 9
Is never exhausted to the outside.

Then, as described above, by supplying dry air from the lower part of the processing chamber 12 and draining it from a large number of holes of the perforated plate 8 when the garbage contains a large amount of water. The water content of the food waste treating material 2 in the processing chamber 12 can be maintained at a substantially constant water content (for example, about 60%), and the food waste can be stably decomposed. By the way, since a part of the exhaust gas collected in the exhaust chamber 4 is returned from the return unit 6 to the intake unit 3 as described above, the exhaust gas actually discharged from the exhaust unit 5 is the exhaust gas collected in the exhaust chamber 4. The amount of exhaust air exhausted to the outside through the deodorizer 11 is small (the amount of exhaust air to the outside is equal to the amount of fresh air sucked in here), and as a result, the capacity of the deodorizer 11 is increased. Can be made smaller, the exhaust capacity can be made smaller, and it can be made compact. Further, since the amount of exhaust air exhausted to the outside is small, the amount of exhaust air containing moisture exhausted to the outside can be reduced, and the deterioration of the surrounding environment can be prevented.
Moreover, since a part of the exhaust gas is returned to recover the exhaust heat, it is possible to effectively reduce the heat loss and decompose the food waste.

[0014]

According to the invention of claim 1 of the present invention, as described above, the raw garbage processing tank is filled with the raw garbage processing material, and the raw garbage processing material is filled in the raw garbage processing tank. In a food waste processing device for decomposing processed food waste, an exhaust chamber is provided in an upper part of the food waste processing tank, and an exhaust unit for discharging a part of exhaust gas to the outside and a part of exhaust gas. And a return section for returning the mixed waste, and an intake section for mixing a part of the exhaust gas returned from the return section with the outside air in the lower part of the food waste processing tank and supplying it to the lower part in the food waste processing tank. Since the intake section is provided with a condensing section for condensing and removing water from the mixed gas obtained by mixing the outside air with a part of the returned exhaust gas,
Part of the heat generated when decomposing food waste can be collected and taken in, there is no heat loss, and the decomposition of food waste can be effectively performed. Also, from the bottom of the garbage disposal tank. Since fresh air supplies gas containing outside air, air can be supplied evenly from the bottom of the garbage processing tank to the top, enabling more efficient decomposition of garbage, and exhaust containing moisture. When a part of the exhaust gas is returned, the raw garbage processing material can be made to have a constant and stable water content by removing the water by agglomerating, and the decomposition treatment efficiency is not reduced. In addition, since the amount of exhaust air exhausted to the outside is reduced, it is possible to prevent the exhaust environment containing a large amount of moisture from being exhausted to the outside in a large amount and deteriorating the surrounding environment.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the lower part of the garbage disposal tank is separated from the garbage disposal tank by a perforated plate. A lower chamber is provided, and an intake unit having a condenser is arranged in the lower chamber,
Since the lower chamber is equipped with a drainage part for draining the water accumulated in the lower part of the lower chamber, the water contained in the raw garbage is effectively drained to improve the processing efficiency of the raw garbage by the raw garbage processing material. In addition to being able to effectively carry out, the water condensed in the condensing section can be collected together with the water from which the above-mentioned food waste has been drained, and discharged with a simple structure.

According to the invention of claim 3, in addition to the effect of the invention of claim 1, since the deodorizer is provided in the exhaust part, the deterioration of the external environment due to the exhaust can be prevented. Needless to say, even if a deodorizer is provided, the amount of exhaust to the outside can be reduced as described above, so that the deodorizing ability can be reduced and the exhausting ability can also be reduced, thus achieving compactness.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of one embodiment of the present invention.

[Explanation of symbols]

 1 Garbage processing tank 2 Garbage processing material 3 Intake part 4 Exhaust chamber 5 Exhaust part 6 Return part 7 Condensing part 8 Perforated plate 9 Lower chamber 10 Drainage part 11 Deodorizer

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hideaki Yamada 1048 Odomo Kadoma, Kadoma City, Osaka Inside Matsushita Electric Works, Ltd.

Claims (3)

[Claims] 1. A food waste treatment device for filling food waste into a food waste treatment tank and decomposing the food waste put in the food waste treatment tank with the food waste disposal material. An exhaust chamber is provided above the exhaust chamber, an exhaust unit for discharging a part of the exhaust to the outside and a return unit for returning a part of the exhaust are provided in the exhaust chamber, and the exhaust chamber is returned to the lower part of the garbage disposal tank. A part of the exhaust gas returned from the unit is mixed with the outside air to supply it to the lower part of the garbage processing tank, and the intake part is mixed with the outside air and a part of the returned exhaust gas. An apparatus for treating food waste, comprising a condensing section for condensing and removing water from gas. 2. A lower chamber, which is partitioned from the food waste treatment tank by a perforated plate, is provided in a lower portion of the food waste treatment tank, and an intake portion having a condenser is disposed in the lower chamber, and the lower chamber is provided with a lower portion. The food waste processing device according to claim 1, further comprising a drainage unit for draining water accumulated in a lower portion of the room. 3. The food waste processing apparatus according to claim 1, wherein the exhaust unit is provided with a deodorizer.