JPH09145253A - Live garbage processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a live garbage processing time by a method wherein one passage of a heat exchanger communicates with a drying container, the other passage communicates with a heating passage at a bottom part, a gas discharging cylinder is connected to the heating passage at a bottom part, a combustion chamber and the drying container communicate with each other by a returning passage and a suction fan is arranged at the returning passage at a side of the combustion chamber. SOLUTION: One passage A of a heat exchanger 5 and a drying container 6 communicate to each other by a heating air supplying passage 10. An upstream side of a bonut-shaped bottom part heating passage 13 formed at a bottom part of the drying container 6 communicates with the other passage B of the heat exchanger 5, and its downstream end communicates with the gas discharging cylinder 15 having a discharging port 14 at its extremity end. Then, a returning passage 11 for use in communicating the combustion chamber 6 with the drying container 6 is arranged within the gas discharging cylinder 15, and a suction fan 12 is installed in the returning passage 11 at a side of the combustion chamber 3. With such an arrangement as above, a drying efficiency of the live garbage is high and the processing of the live garbage can be completed in a short period of time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating food waste which uses combustion heat of a burner to dry the food waste to reduce the volume and volume.

[0002]

2. Description of the Related Art Conventionally, as this type of food waste processing device,
For example, the one disclosed in JP-A-5-131184 is known. Explaining the configuration with reference to FIG. 3, the heat exchanger 52 is heated by the combustion gas of the burner 51.
The outside air taken in by the fan 53 rises in temperature while passing through the heat exchanger 52 and flows into the drying container 54 to dry the food waste.

The odorous air flowing out of the drying container 54 after drying the garbage is heated by the heat exchanger 55 and supplied to the burner 51 as combustion air. And burner 5
1 burns, and the combustion gas is discharged to the outside of the device through the exhaust pipe 56.

[0004]

By the way, such conventional food waste processing apparatus has an offensive odor component in its exhaust gas, and odor is generated on the basis of this. This is because odorous air is supplied to the burner 51 as combustion air to decompose the malodorous components by heating, but (1) since combustion air is excessively supplied for complete combustion, The malodorous component of the part remains without being decomposed by heat. (2) The malodorous component flowing here is not decomposed by heat because the temperature between the flame and the surrounding wall surface is not so high. It is inevitable to be discharged. Also, the odorous air is fan 5
Since it flows by pushing in 3, if there is a defect or deterioration of the sealing property, an odor is generated as described above. Furthermore, since the amount of heated air that reaches the bottom of the drying container 54, in which the moisture of the food waste is accumulated, is small and the temperature is unlikely to rise, it takes time to process the food waste.

The present invention has been made in view of the above-mentioned various problems, and an object of the present invention is to provide a food waste processing apparatus which does not generate odor and requires a short processing time for food waste. .

[0006]

In order to achieve the above object, a food waste treatment apparatus of the present invention has an orthogonal heat exchanger arranged on a burner via a combustion chamber, and a catalyst is placed in the heat exchanger. Carrying, one path of the heat exchanger is connected to the drying container, the other path is connected to the bottom heating passage formed in the bottom of the drying container, the exhaust pipe is connected to the bottom heating passage, and the combustion chamber and the drying container are connected. Is communicated with a recirculation passage, and an intake fan is arranged on the combustion chamber side of the recirculation passage.

Further, the orthogonal heat exchanger and the catalyst were arranged in this order on the burner through the combustion chamber, and one path of the heat exchanger was formed in the drying container and the other path was formed in the bottom of the drying container. The bottom heating passage is communicated with each other, the exhaust pipe is connected to the bottom heating passage, the combustion chamber and the drying container are communicated with each other through the recirculation passage, and the suction fan is arranged on the combustion chamber side of the recirculation passage. is there.

[0008]

According to this structure, the heat exchanger is heated by the combustion of the burner, and the outside air passing therethrough enters the drying container as heated air, while the combustion gas that has heated the heat exchanger is dried. Heat the bottom of the. In this way, in the drying container, the heated air diffuses inside and the bottom portion where the water contained in the garbage is accumulated is also heated, so that the drying container is efficiently dried, and the treatment is completed in a short time. Further, since the suction fan is provided on the combustion chamber side of the return passage, the entire amount of the odorous air flowing out from the drying container flows into the combustion chamber, and thereafter, the odorous components are thermally decomposed by catalytic combustion.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a burner, 2 is an air supply fan that supplies combustion air to the burner 1, and 3 is a combustion chamber. An orthogonal heat exchanger 5 carrying a catalyst 4 is provided immediately above the combustion chamber 3. The catalyst 4 used here is one that is active at low temperature, such as platinum or palladium, and is supported on at least the path through which the combustion gas passes among the two paths that intersect at right angles. In addition to the above, the catalyst 4 includes a heat exchanger 5 as shown in FIG.
It may be independently provided above. The heat exchanger 5 is preferably made of ceramic, and in this case, heat resistance can be ensured and it is convenient for supporting the catalyst 4. Reference numeral 6 denotes a drying container, which has an opening / closing lid 7, a mixing fan 8, an agitating blade 9 appropriately equipped with a cutting blade, and the like.

Reference numeral 10 is a heated air supply passage for connecting one path A of the heat exchanger 5 to the drying container 6, and 11 is a reflux passage for connecting the drying container 6 and the combustion chamber 3. Reference numeral 12 denotes an intake fan, which is provided in a portion of the return passage 11 near the combustion chamber 3 side.

Reference numeral 13 denotes a donut-shaped bottom heating passage formed in the bottom of the drying container 6. The upstream side of the bottom heating passage 13 communicates with the other path B of the heat exchanger 5, and the downstream side is discharged to the end. It communicates with an exhaust pipe 15 having a port 14. Exhaust stack 15
Has a so-called double tube structure in which the return passage 11 is inserted. The exhaust stack 15 and the return passage 11
May be configured by using a commercially available double tube. Also,
Reference numeral 16 is a cylinder, 17 is a discharge port, and 18 is a waste container.

The operation of the above configuration will be described. When the opening / closing lid 7 is opened, raw garbage is put into the drying container 6, and a switch or the like is operated to start the operation, the stirring blade 9 starts rotating. Garbage generally contains several tens of percent water. Therefore, when the stirring blade 9 rotates, the tissue is destroyed, and the water flowing out from this is gradually accumulated at the bottom of the drying container 6. Further, at the same time as the stirring blade 9 rotates, the mixing fan 8 and the air supply fan 2 are also started, the combustion air is supplied from the air supply fan 2, and the burner 1 starts combustion. Then, the combustion gas heats each of the heat exchanger 5, the bottom of the drying container 6 and the recirculation passage 11, and is thereafter discharged from the exhaust port 14 to the outside of the device.

When the temperature becomes higher than the temperature at which the catalyst becomes active (eg, 250 ° C.) due to such combustion, the suction fan 12 is driven. Therefore, the outside air flows into the heat exchanger 5, and heat is exchanged while passing therethrough to become heated air, which then flows into the drying container 6 through the heated air supply passage 10. The heated air that has flowed in is diffused to every corner of the drying container 6 by the mixing fan 8. Thus, as described above, in combination with the fact that the bottom of the drying container 6 in which the moisture of the food waste is accumulated is also heated to a high temperature, the food waste is efficiently dried. Then, with the drying, the heated air becomes moist and odorous air and flows out into the return passage 11.

The recirculation passage 11 is heated by the combustion gas as described above. Therefore, the odorous air rises in temperature while passing through it, and flows into the combustion chamber 3 without causing drainage,
It flows in the direction of the bottom heating passage 13 together with the combustion gas.

By the way, since the catalyst 4 located upstream of the bottom heating passage 13 is in an active state, the malodorous components in the odorous air passing therethrough are catalytically burned and decomposed by heating. In addition,
Since the intake fan 12 does not start until the catalyst becomes active, it goes without saying that the malodorous component does not flow into the combustion chamber 3. From this, it is possible to prevent odors from being generated outside the device in connection with the processing of food waste.

In the waste treatment, since the drying container 6 receives the inflow of heated air and the heating of the bottom, the drying efficiency is high,
Waste disposal is completed in a shorter time than before. Then, when the completion of drying the food waste is detected by an appropriate sensor, the burner 1 stops the combustion, the driving of the cylinder 16 opens the discharge port 17, and the dry dust blown by the rotation of the stirring blade 9 enters there. It falls into the waste container 18.

[0017]

As described above, the apparatus for treating food waste of the present invention has a high drying efficiency of food waste and can complete the treatment in a short time, and the odorous air is sucked in by the suction fan, so that the piping is improved. As a result, leakage is less likely to occur, and since the malodorous component is thermally decomposed by catalytic combustion between the combustion chamber and the bottom heating passage, it is possible to prevent odor from being generated outside the device.

Further, since the recirculation passage is inserted into the exhaust pipe, the combustion gas passing through the exhaust pipe heats the recirculation passage, so that the moist odorous air flowing through the recirculation passage may generate a drain. Instead, the entire amount of the malodorous component enters the combustion chamber, and after that, catalytic combustion is performed to effect thermal decomposition.

Further, since the intake fan is constructed to start after the temperature of the catalyst becomes active, the malodorous component does not flow into the combustion chamber when the catalyst is inactive, and the malodorous component passes through the catalyst. The effect that it can be prevented from being discharged to the outside of the device.

[Brief description of the drawings]

FIG. 1 is a structural diagram illustrating a food waste processing device according to an embodiment of the present invention.

FIG. 2 is a structural diagram illustrating a food waste processing device according to another embodiment of the present invention.

FIG. 3 is a diagram illustrating a conventional food waste processing device.

[Explanation of symbols]

 1 Burner 3 Combustion Chamber 4 Catalyst 5 Heat Exchanger 6 Drying Container 11 Reflux Passage 12 Intake Fan 13 Bottom Heating Passage 15 Exhaust Cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Goto 1-3-12 Nishishinbashi, Minato-ku, Tokyo Inside Nippon Oil & Oil Co., Ltd. Incorporated (72) Inventor Miyuki Watanabe 651 Izumi, Shirone, Niigata Prefecture Dainichi Kogyo Co., Ltd.

Claims (4)

[Claims] 1. An orthogonal heat exchanger is arranged on a burner via a combustion chamber, a catalyst is supported on the heat exchanger, and one path of the heat exchanger is a drying container and the other path is a drying container. To the bottom heating passage formed at the bottom of the chamber, the exhaust pipe is connected to the bottom heating passage, the combustion chamber and the drying container are connected to each other through the recirculation passage, and the suction fan is provided on the combustion chamber side of the recirculation passage. Garbage processing equipment. 2. An orthogonal heat exchanger and a catalyst are arranged in this order on a burner via a combustion chamber, one path of the heat exchanger is formed in a drying container, and the other path is formed in the bottom of the drying container. A food waste processing apparatus in which a bottom heating passage is connected to each other, an exhaust pipe is connected to the bottom heating passage, a combustion chamber and a drying container are connected to each other through a recirculation passage, and an intake fan is disposed on the combustion chamber side of the recirculation passage. 3. The food waste processing device according to claim 1 or 2, wherein a recirculation passage is inserted into the exhaust stack. 4. The food waste processing device according to claim 1, wherein the suction fan is started after the temperature of the catalyst reaches a temperature at which the catalyst becomes active.