JPH05177182A - Fresh garbage treating device - Google Patents

Abstract

PURPOSE:To prevent fresh garbage in its container from being putrid and producing an offensive odor and bring the garbage into a reduced amount by providing a relatively small-sized and simple garbage treating device capable of drying the garbage into a reduced amount in a sanitary, polution-free, safe and accurate manner. CONSTITUTION:The fresh garbage treating device is provided with a heat insulating container 1 for fresh garbage, a heater 2a for heating the garbage in the container 1 located therein, a flow passage 6 for passing therethrough the vapor produced from the heated garbage, a cooling means 7 for cooling the flow passage at least partially, a condensing part 8 for condensing the cooled vapor and a deodorizer 11 for deodorizing the odoriferous components produced together with the vapor by sending thereinto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended for kitchen wastes of general households, kitchen wastes, and other wastes containing a relatively large amount of water, so-called garbage, and is relatively small and simple and hygienic. The present invention relates to a processing device that can be used for various purposes.

[0002]

2. Description of the Related Art The typical wastes discharged from households are garbage. Most of the garbage is kitchen waste generated around the kitchen. Regarding the disposal of these wastes, it is a general method that a collection vehicle goes to a place for a predetermined time to collect them, and centrally disposes them at a treatment facility such as an incinerator. Therefore, in general households, it is necessary to store the waste until a predetermined time for collection, and it is necessary to transport the waste to a predetermined place for collection. In order to eliminate those inconveniences, some devices and methods have been proposed for processing the belongings at (near) the place where they occur. A typical example of this is the so-called disposer, which is a system that uses mechanical power to atomize food waste and flush it with sewage along with water. For many reasons, its use is often banned at the municipal level (to avoid organic pollution of rivers). Further, as other methods, there are a heating (partial combustion) method using a heater, a microwave, etc., and a freezing method for preventing odor.

[0003]

As described above, it is necessary to store food waste in the vicinity of the place where the garbage is generated, as described above, but since it contains a large amount of water, it decomposes by itself. To create an environment where Therefore, the first major problem is that the rot of raw garbage progresses during storage and an offensive odor is generated. The second major problem is the heavy labor of transporting the bag filled with the water to a predetermined place where it is collected because it contains a lot of water. In addition, water often leaks from the bag that holds kitchen waste during transportation to the collection site, and the traces often cause new (secondary) odors to occur. It was urgent.
On the other hand, looking at the conventional kitchen waste treatment equipment, the disposer can finely crush kitchen waste, but since the wastewater after treatment contains a large amount of solids and organic components, it causes organic pollution in rivers, etc. It was. The incineration method still has problems such as odor generation during incineration and difficult ash treatment. In addition, the refrigeration system cannot reduce the weight of kitchen waste in principle. Therefore, each of the methods has its own problems, and there is still no practical garbage disposal device at a practical level, and it is a problem to realize it at an early stage.

[0004]

In order to solve the above problems, the present invention provides a heat-insulating food waste container and a food waste container for heating food waste contained in the food waste container. Food waste treatment as a configuration having a heater provided, a flow path for water vapor generated from heated food waste, a cooling unit for cooling at least a part of the flow path, and a condensing unit for cooled water vapor It is a device.

Further, there are provided a heat-insulating food waste container mainly made of a metal material, a food waste heater provided in the food waste container, a condensing container provided outside the food waste container, and a condensing container. Food waste treatment as a structure having a cooling means for cooling, a water vapor flow path formed between the condensing container and the food waste container, and means for detecting the degree of dryness of the food waste to be heated and dried. It is a device.

[0006]

The main component of food waste is water, which usually accounts for 70 to 80% of its weight. The present invention is an apparatus for heating raw garbage to evaporate and separate water, to treat raw garbage in a dried state, and to dispose steam as condensed water. At this time, the food waste container is configured to be heat-insulated to minimize the heat loss during heating to improve heating efficiency, and since there is almost no heat dissipation, the internal parts of the food waste container are kept at a uniform temperature. Since it is possible to heat and dry, the unevenness of heating and drying is minimized, and the occurrence of charring is suppressed, so that the condensed water can be discarded in a clean state.

Further, since the odor component gas generated during heating is also cooled and condensed at the same time and collected in the condensed water, the generation of odor during the treatment can be minimized. Furthermore, by providing the condensing container outside the food waste container, it is possible to achieve both efficient water separation and simplification of the device configuration.

Further, in the structure in which the condensing container is provided outside the food waste container, a large heat exchange area can be taken without enlarging the device.

[0009]

FIG. 1 is a vertical sectional view of an essential part of an embodiment according to the present invention.
Shown in. Reference numeral 1 is a heat-insulating food waste container that also serves as a part of the exterior, and a heater block 2 containing a heater 2a is provided therein as a heater for heating the food waste contained therein. Reference numeral 2b is a lead terminal of the heater.
Here, a self temperature controllable (PTC) heater is used as the heater to control the heater temperature to 100 to 130 ° C. However, naturally, the heating temperature is controlled by a combination of a normal heater such as a sheath hitter and a temperature detector. It is also possible to adopt a method. It is also effective to use an induction heating type heater. The food waste container 1 is a vacuum heat insulating container having a double wall made of a metal material and having a hollow portion 1a having a substantially vacuum. In addition to this, heat-resistant (foamed) plastic materials,
A heat insulating container structure made of a ceramic material or a composite material thereof may be used. However, it is advantageous to use the metal vacuum heat insulation container from the viewpoint of heat insulation performance, durability and the like.

Reference numeral 3 denotes a garbage container which is detachable from the garbage container 1 for convenience of use. However, it is also possible to throw the garbage directly into the heater block 2 for processing. Reference numeral 4 denotes a lid for loading and unloading the garbage or the garbage container 3, and it is essential that the entire lid 4 is heat-insulated. Reference numeral 5 is a handle of the lid 4. 6 is a heater 2
The cooling fan 7 is provided as a cooling means for cooling and condensing a part of water vapor generated from the food waste heated by a. Therefore, the condensing part 8 is formed in a part of the water vapor flow path 6. Reference numeral 8a is a cooling fin provided for effectively cooling the cooling fan 7. Although air cooling is adopted as the cooling method here,
Of course, it is also possible to adopt a water cooling system in which a water supply pipe is fixed to the water vapor flow path 6. And it can be applied to the structure that uses the waste water as hot water.

Reference numeral 9 denotes a temperature detector provided to detect the dryness of the food waste, and detects the temperature inside the equipment (water vapor) which rises when the drying process is almost finished, and terminates the process. Other than the above, a weight detection method, a humidity detection method, a heater input detection method, or the like can be adopted as a means for ending the heating and drying process, but the temperature detection method is convenient and inexpensive. Reference numeral 13 denotes a drain port for draining condensed water, and the downstream side thereof can be directly connected to a drain groove, or a condensed water reservoir can be attached to form a portable device. Reference numeral 10 denotes a branch pipe branched from the water vapor flow path 6, and provided with a suction fan 12 for sucking gas through the same portion and a deodorizer 11 for deodorizing a malodorous component contained in the sucked gas. ing.

Although the exhaust path is formed by these, most of the water generated from the garbage is condensed in the condensing section 8 and discharged, and the amount of the odor component gas generated during the processing is small, so the suction fan 12 is used. The amount of suction and exhaust of can be as small as necessary. Further, as the deodorizer 11, a method using an oxidation catalyst (with a heater for heating) is adopted here, but other methods can also be used. Adsorption deodorization method using activated carbon type, silica type, alumina type, zeolite type, ion exchange resin type adsorbent, oxidative decomposition method using ozone, biodeodorization method, neutralization and masking using fragrance, etc. It is possible to select (a plurality may be used) from among the methods according to the usage conditions.

Next, the operation will be described. First, the lid 5 is opened, the garbage container 3 is pulled out, and the garbage is put therein. Set in the garbage container 1 and close the lid 4. Now that the preparation is completed, the heating operation is started. The heater 2a, which is a heater, is energized to start heating the garbage. At the same time or when the temperature of the garbage is measured, the cooling fan 7 and the suction fan 12 also start operating. The temperature of food waste gradually rises and steam begins to be generated. Increasing the heat insulating property of the food waste container 1 is effective for efficiently generating steam (improvement of heating efficiency). The generated water vapor flows out into the water vapor flow path 6, but at this time, since the condenser 8 is cooled by the air sent from the cooling fan 7, the water vapor generated is cooled and condensed in the same portion. The condensed water generated in the condensing section 8 is caused to flow out of the machine through the drain port 13. When a condensed water reservoir is provided on the downstream side of the drainage port 13, it is preferable that the condensed water can be removed and discarded when the condensed water is sufficiently accumulated. This configuration enables use as a portable device. In this way, the garbage is dried and the water is separated.

A small amount of a gaseous odor component generated together with water vapor during this drying process is branched from the water vapor flow path 6 in the branch pipe 1.
0 is sucked by the suction fan 12, and the deodorizer 1
It is sent to No. 1 and is deodorized in the same section and then exhausted to the outside of the machine, resulting in almost no odor. In order to allow the oxidative deodorization reaction to proceed smoothly, it is effective to adopt a configuration in which a small amount of outside air (air) is sucked into the suction fan 12. In addition, by adding a mechanism for interlocking the operation of the suction fan 12 with the opening of the lid 4,
It is possible to prevent the odor from flowing out to the side of the person who operates it when the lid is opened, and it is possible to eliminate the discomfort when the lid 4 is opened. During this heating and drying process, when the water content in the food waste is sufficiently large, the temperature detected by the temperature detector is substantially equal to 100 ° C., which is the boiling point of water. However, when the amount of water decreases, the boiling point rises and the detection temperature starts to rise. The process ends by detecting this state. Further, if the heating temperature is too high, the thermal decomposition of the food waste is promoted during heating, the amount of organic components is scattered, and a large amount of organic components are mixed in the condensed water. This will increase the organic treatment load of sewage and should be avoided. Therefore, it is desirable to set the heating temperature to a value slightly higher than the boiling point of water (approximately in the range of 100 to 130 ° C.). This makes it possible to suppress the generation of organic components due to thermal decomposition and facilitate detection of completion of the drying process.

FIG. 2 shows a longitudinal sectional view of the essential parts of another embodiment according to the present invention. Reference numeral 28 denotes a condensing container, which is made of an aluminum alloy which is a good heat conductive material in order to use it as a condenser, and whose inner surface is coated with a fluorine-based resin in order to prevent the adherence of dirt due to condensed water There is. Reference numeral 24 is a front opening door. Here, a door 24 is provided which opens and closes in order to take in and out the food waste and the food waste container 21, but the door 24 is used as a front plate to pull out the whole with the food waste container 2, or the front plate is pulled up to the front. It is also possible to modify the structure to incline. 40 is an airtight packing provided on the door 24, and 25 is a door handle for opening and closing the door 24. The food waste container 21 provided in the condensing container 28 is a vacuum heat insulating container having a double wall made of a metal material and having a hollow portion 21a in a substantially vacuum state. In addition to this, a heat insulating container structure made of a heat resistant (foamed) plastic material, a ceramic material, a composite material thereof, or the like can be used. However, it is the same as the embodiment in FIG. 1 that the use of the metal vacuum heat insulating container is advantageous from the viewpoint of heat insulating performance, durability and the like.

It is also possible to provide the garbage container 21 with an inner lid. In that case, it is necessary to provide a steam outlet on the inner lid. Inside the food waste container 21, a heater block 22 containing a heater 22a is provided as a heater for heating the contained food waste. 22b is a lead terminal of the heater. These are integrally configured as the garbage container 21, and are configured to be electrically connected to the power transmission terminal 39 when pushed into the condensing container 28. Heater 22a
As for the self temperature controllability (PT
C) The heating temperature is controlled at 100 to 130 ° C. by using the heater. Similar to FIG. 1, it is possible to use other types of heaters. A water vapor flow path 26 is formed between the condensing container 28 and the garbage container 21. A drainage port 33 is provided in the lower portion of the condensing container 28, and reaches the drainage groove through the drainage pipe 34 and the watertight portion 35. It is also possible to improve the portability by providing a condensed water reservoir on the downstream side of the drain port 33 or by using a lower part of the condensation container 28 as the condensed water reservoir. 27 is a cooling fan for sending air to the space 38 between the exterior 23 and the condensing container 28 to cool the condensing container 28 to condense water vapor, 36 is an air intake port, and 37 is an air exhaust port. .. Reference numeral 32 is a suction fan used for sucking and discharging the generated gas being processed through the branch pipe 30 of the drain pipe 34, and 31 is a deodorizer, which form an exhaust path. Most of the generated water is condensed and drained, and the amount of the odorous component gas generated during the treatment is also small. Therefore, the suction exhaust amount of the suction fan 32 can be the minimum necessary amount. Further, as the deodorizer 31, a method using an oxidation catalyst (with a heater for heating) is adopted here, but various other methods can be used as in the embodiment of FIG. Reference numeral 29 denotes a water vapor temperature detector provided to detect the dryness of the food waste heated by the heater 22a. The water vapor temperature detector 29 detects the water vapor temperature which changes as the food waste drying process progresses, and determines the end of the process. Used for. Although the dryness is detected here using the water vapor temperature as an index,
Of course, it is also possible to use the other methods shown in the embodiment of FIG. It is also effective to stir (or crush) the food waste in the food waste container 21 to make heating more effective from the viewpoint of obtaining uniform heating and drying. In that case, a configuration can be adopted in which an operating part for stirring is inserted from the upper part or the lower part of the food waste container 21.

Next, the operation will be described. First, the door 24 is opened, the garbage container 21 is pulled out, and the garbage is put therein. The garbage container 21 is set in the condensing container 28, and the door 24 is closed. Now that the preparation is completed, the heating operation is started. The heater 22a is energized to start heating the garbage. At the same time or after confirming the temperature increase of the garbage, the cooling fan 27 and the suction fan 32 also start to operate. The temperature of food waste gradually rises and steam begins to be generated. Increasing the heat insulation of the food waste container 21 is effective for efficiently generating steam (improvement of heating efficiency). The generated water vapor fills the condensing container 28, but at this time, since the wall surface of the condensing container 28 is cooled from the outside by the air sent from the cooling fan 27, the generated water vapor is cooled on the inner surface of the wall. Is condensed.
Therefore, the condensing portion is formed on the inner wall side of the condensing container 28,
Further, a water vapor flow path 26 is formed between the condensing container 28 and the food waste container 21. Compared with the embodiment shown in FIG. 1, the configuration of the condensing container of this embodiment has an advantage that the entire apparatus can be compactly assembled.

Further, although the air cooling system is adopted here, it is also possible to adopt a water cooling system in which a water supply pipe is fixed to the condensing container 28. And it can be applied to the structure that uses the waste water as hot water. The condensed water generated on the inner wall of the condensing container 28 is discharged from the drain port 33 to the drain pipe 34. In this way, the garbage is dried and the water is separated. A small amount of a gaseous odor component generated together with water vapor in this drying process is sucked by a suction fan 32 through a branch pipe 30 branched from a drain pipe 34, sent to a deodorizer 31, and then deodorized at the same portion to the outside of the machine. Since it is exhausted, it becomes almost odorless. At this time, in order to allow the oxidative deodorization reaction to proceed smoothly, it is effective to suck a small amount of outside air (air) into the suction fan 32 and pass the deodorizer 31. In this processing, the raw garbage is directly put into the raw garbage container 21, and the processing is performed. However, if the bag is set in the inside before the raw garbage is put into the raw garbage container 21, the processing ends. Since the whole bag can be taken out later, the operation becomes easy. Further, by adding a mechanism for interlocking the operation of the suction fan 32 with the opening of the door 24, odor can be prevented from flowing out to the side of the person who operates when the door 24 is opened, and the discomfort when the door 24 is opened is reduced. It can be lost.

Further, by constructing the waste container 21 so that it can be taken in and out by the front opening door 24 (or the front drawer), the height of the entire apparatus can be lowered, and the most difficult place to use in the system kitchen. It is also possible to install it under the sink of the sink. Since the garbage is mainly generated around the sink, the fact that this device can be installed at the location closest to the location improves the operability and convenience of the user.

[0020]

Industrial Applicability The present invention has the extremely simple construction as described above, and is capable of efficiently and non-pollutingly reducing the weight of dry garbage, and has good operability and excellent installability. It is possible to provide a device. As a result, it is possible to prevent spoilage and offensive odors during storage of food waste, and reduce the weight to reduce the labor required for transportation to the collection site, prevent water leakage during transportation, and prevent secondary odor generation. , It produces various effects such as contributing to the reduction of garbage. Further, when the condensing container is provided outside the food waste container, a large heat exchange area can be taken without enlarging the device.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a main part of a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of a second embodiment of the present invention.

[Explanation of symbols]

 1, 21 Food waste container 2a, 22a Heater 6, 26 Water vapor flow path 7, 27 Cooling fan 8 Condensing part 28 Condensing container 29 Temperature detector

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jiro Suzuki, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A heat-insulating food waste container, a heater provided in the food waste container for heating the food waste contained in the food waste container, and the heated food waste. A food waste treatment device comprising: a flow path for generated steam; a cooling unit for cooling at least a part of the flow path; and a condensation section for the cooled steam. 2. A heat-insulating food waste container mainly composed of a metal material, a food waste heater provided in the food waste container, a condensing container provided outside the food waste container, and A cooling means for cooling the condensing container, a water vapor flow path formed between the condensing container and the food waste container, and means for detecting the degree of dryness of the food waste to be dried by heating. Raw garbage processing equipment to have. 3. A drainage port for draining condensed water is provided in a condensation container, a drainage pipe is provided on the downstream side of the drainage port, and gas is sucked from the drainage pipe and exhausted to the outside of the machine. 3. The food waste processing device according to claim 1, further comprising a deodorizer provided in the exhaust passage.