JPS63279012A - Refuse burner - Google Patents

Abstract

PURPOSE:To dry and burn refuse with high efficiency without rapidly generating a large quantity of combustion gas, by a method wherein a refuse heating means to heat refuse to a temperature higher than its ignition temperature and a far infrared ray generating means to generate infrared rays are provided, and refuse is irradiated from its surface with infrared rays. CONSTITUTION:Refuse 5 is charge through a charge port 2a in to a ceramics container 3, and when, by energizing a heater 4 with the refuse 5 mounted on tray 6, the ceramics container is heated to increase its surface temperature to a value higher than 35 deg.C, the refuse is irradiated with infrared rays being most apt to be absorbed by water. The surface of the refuse is fist dried and burnt by means of infrared rays and a radiant heat from the ceramics container 3, and combustion of the refuse to its center is performed as partial dry and partial combustion are repeated. Combustion gas is exhausted to the outside of an outer casing 2 through an exhaust duct 13 by means of an exhaust passage 11. The combustion gas is re-burnt in a deordorizing device 12 to remove malodor. By feeding the cold open air through a feed duct 14 through rotation of a fan motor 15, the temperature of the combustion gas exhausted through the exhaust duct 13 is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a food waste combustion device suitable for processing food waste mainly discharged from home kitchens.

[Conventional technology]

As this type of garbage combustion device, one has been developed that dries the garbage using microwaves and burns the dried garbage using the action of a microwave-absorbing heating element.

In addition, as a grain drying device, it is possible to shorten the drying time of grains by irradiating them with far infrared rays.
It is known from Japanese Patent Application Laid-Open No. 76871, and it is known from Japanese Patent Application Laid-Open No. 191283 that a heating furnace generates far infrared rays by heating ceramic with a heat source. At the same time, a garbage incineration device for burning the garbage is still unknown.

[Problem that the invention seeks to solve]

In the conventional food waste combustion equipment mentioned above, all of the food waste is air-dried and ignites at once when it is dry, so a large amount of steam is rapidly generated along with the bad smell of the food waste. It is extremely difficult to remove bad odors. Moreover, as food waste burns in a short time after drying, a large amount of high-temperature combustion gas is generated rapidly. It becomes necessary.

An object of the present invention is to solve the above-mentioned problems by drying and burning food waste without rapidly generating a large amount of steam during the food waste drying process and a large amount of combustion gas during the food waste combustion process. An object of the present invention is to provide a garbage combustion device that can efficiently perform the following operations.

[Means for solving problems]

The above object is achieved by providing a garbage heating means for heating the garbage to a temperature higher than its ignition temperature and a far-infrared ray generating means for generating far-infrared rays, and irradiating far-infrared rays from the surface of the garbage.

(Function) When the food waste is heated by irradiating the food waste with far infrared rays using the food waste heating means, the heat energy is efficiently absorbed by the water contained on the surface of the food waste, and the water evaporates. First, the surface of the food waste dries and reaches above the ignition temperature in a short time and burns.

The area below the surface of the garbage is heated by the heating means, far infrared rays, and heated by the combustion of the garbage, locally and continuously repeating drying, ignition, and combustion. The food waste is burned sequentially down to the center. For this reason, all of the moisture contained in the garbage will not evaporate at once, and all the garbage will not be combusted at once, and a large amount of steam and a large amount of combustion gas will not be suddenly generated.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, a garbage combustion device 1 includes a coil-shaped heater 4 wrapped around the outer wall of a heat-resistant material container 3, and a heater 4 provided in a lower portion inside the ceramic container 3, and having honeycomb-shaped partial protrusions. A saucer 6 for the garbage 5; a bottom plate 7 made of heat-resistant steel that is placed below the tray 6 to receive the ash after the garbage 5 is burned; It includes a heat-resistant ash storage container 9 for temporarily storing ash 8, and an inner cylinder 1o below the ceramic container 3 and covering the outside of the ash storage container 9.

At the center of the upper surface of the outer casing 2, an input port 2a is provided for inputting garbage into the ceramic container 3 from above. An outside air inflow passage 2b for introducing outside air into the inner cylinder 10 is provided at the lower side of the outer casing 2. An exhaust passage 11 is communicated with the upper part of the ceramic container 3.

A deodorizing device 12 is provided within the exhaust passage 11.

The exhaust passage 11 is an exhaust duct 13 provided on the top surface of the outer casing 2.
It is connected to the. An air supply duct 14 for introducing outside air into the exhaust passage 11 is connected to the exhaust passage 11 . A fan motor 15 is provided within the air supply duct 14. A part of the exhaust duct 13 is the air supply duct 14
Piping runs through the inside.

The saucer 6 and the bottom plate 7 are connected to a rotating shaft 1 provided in the center of the bottom plate 7.
It has a structure that allows it to rotate around 6.

An ash discharge port 9a is provided at the bottom of the ash storage container 9, and a bottom lid 17 for opening and closing the ash discharge port 9a is attached using a rotating shaft 18. An ash storage bag 19 is installed below the ash storage container 9, with the ash discharge port 9a fitted into the opening of the bag 19.

Although not shown, the rotation of the saucer 6 and the bottom plate 7 and the opening and closing of the bottom cover 17 can be performed manually from outside the outer casing 2. Although not shown, the ash storage bag 19 can be manually attached to and removed from the inner cylinder 10 from outside the outer casing 2.

A heat-resistant input port cover 20 is removably provided at the input port 2a of the outer casing 2. The surface temperature of the ceramic container 3 is the temperature at which cellulosic food waste ignites, that is, 35
It is heated to 0° C. or higher by a heater 4. When the surface temperature of the ceramic container 3 reaches 350° C. or higher, the surface of the ceramic container 3 absorbs wavelengths 3.
A large amount of far infrared rays with a wavelength of 2 μm is radiated toward the garbage inside the ceramic container 3. A heat insulating material 21 such as glass wool or asbestos is provided between the outer casing 2 and the ceramic container 3.

The ceramic container 3 is made of a ceramic material made of β-cordierite crystals, which is a ceramic material that emits a large amount of far-infrared rays that are easily absorbed by water when the container 3 is heated to 350° C. or higher.

The heater 4 uses a nichrome wire whose surface is coated with ceramic. The bottom plate 7 has a dish-like cross-sectional shape so that water falling from the garbage 5 placed on the tray 6 does not spill. The saucer 6 is formed from a wire mesh or a ceramic monolith.

In the above configuration, the food waste 5 is put into the ceramic container 3 through the inlet 2a, and as shown in FIG. When the surface temperature is heated to 350° C. or higher, the garbage is irradiated with far-infrared rays that contain the most far-infrared rays with a wavelength of 3.2 μm, which is most easily absorbed by water.

The surface of the garbage is first dried and burned by the far infrared rays and radiant heat from the ceramic container 3, and then partial drying and partial combustion are repeated until the center of the garbage is burned. It will be done.

In order for this combustion to occur efficiently, the outside air inflow passage 2b
Outside air is supplied around the garbage 5 as shown by arrows Pl and Pz in FIG. The combustion gas is indicated by arrow P3 in FIG. As shown in P4 v Ps, exhaust passage 1
1 to the outside of the outer casing 2 via the exhaust duct 13. At this time, the combustion gas is burned again in the deodorizing device 14 to remove the bad odor. By rotating the fan motor 15 and sending cold outside air from the supply air duct 14 into the exhaust duct 13 as shown by arrows QL and Qz in FIG. 1, the temperature of the combustion gas discharged from the exhaust duct 13 is controlled. is lowered.

The garbage 5 is burned and turned into ash, and the ash falls onto the bottom plate 7. The ash on the bottom plate 7 falls into the ash storage container 9 by turning the bottom plate 7 around the rotating shaft 18.

Once the ash in the ash storage container 9 has cooled down sufficiently, the bottom lid 1
7 is opened, the ash is stored in the ash storage bag 19, and the ash storage bag 19 is discarded.

In the above embodiment, the food waste 5 is sequentially burned from the surface toward the center, and the heat generated by the combustion of the food waste 5 is used for drying the food waste 5. Therefore, the energy applied from the outside of the food waste 5, i.e. , the energy applied by the heater 4 can be reduced, and in addition, it is possible to prevent the food waste 5 from suddenly generating a large amount of steam, or the food waste 5 to burn all at once and producing a large amount of combustion gas. Therefore, it is easy to dispose of the bad odor and combustion gas generated from the garbage 5. The deodorizing device 12 may have an extremely simple structure.

In the above embodiment, due to the function of the heat insulating material 21, the heater 4
can effectively convert electrical energy into far-infrared energy, with a conversion efficiency of 70% or more, which can save energy compared to a structure using microwave energy, which has a conversion efficiency of 50 to 60%.

In the above embodiment, the food waste 5
drying time and combustion time can be shortened.

2 to 4 show other embodiments of the present invention, and parts with the same reference numerals as in FIG. 1 indicate the same contents.

In another embodiment shown in FIG. 2, a deodorizing device 22 provided in the exhaust passage 11 includes a monolithic ceramic provided in the exhaust passage 11, and heats this ceramic with a heater 23 provided outside the exhaust passage 11. This is the composition. Heater 23
is electrically connected to a heater 4 wrapped around the outer wall of the ceramic container 3. The ceramic of the deodorizing device 22 controls the temperature of its wall surface by organic hydrocarbon substances,
The heater 23 maintains the temperature above the oxidation temperature of the sulfur compound and the chlorine compound.

FIG. 3 shows a modification of the bottom plate placed below the saucer 6. That is, as shown in FIG. 3, the bottom plate 24 is provided with an outside air inlet 24a in the center thereof, and a cover 25 is provided above the outside air inlet 24a. A bank 24b is provided around the entire circumference of the outside air inlet 24a. According to this configuration, outside air can easily reach the surroundings inside the garbage 5 from below the saucer 6, and the combustion of the garbage 5 is performed smoothly. This prevents it from entering the entrance 24a.

Another embodiment in FIG. 4 shows an example in which sensible heat of combustion gas is used as heating means for the ceramic container 3. That is, as shown in FIG. 4, the heating means 26 of the ceramic container 3 includes an outer tube 26a provided concentrically outside the ceramic container 3, and a spiral partition plate 26 provided inside the outer tube 26a. 'b, a combustion furnace 26c provided below and outside the outer cylinder 26a, and a gas burner 26d provided in the combustion furnace 26c. Deodorizing device 27
is a protruding cylindrical body 27 formed on the upper part of the ceramic container 3.
a, a heat retainer 27b provided inside the protruding cylinder 27a, and a plurality of inlets 27c for allowing the combustion gas in the outer cylinder 26a to flow into the protruding cylinder 27a. A protruding cylindrical body 27a of the deodorizing device 27 is connected to the exhaust passage 11. The inner surface of the outer cylinder 26a is coated with ceramic to increase the amount of heat transferred from the combustion gas to the ceramic container 3.

〔Effect of the invention〕

According to the present invention, the food waste is heated by heating the food waste to a temperature higher than its ignition temperature, and the far infrared ray generating means is provided to generate far infrared rays. can be sequentially dried and combusted from the surface to the center without suddenly generating large amounts of steam and combustion gas, and the energy from burning food waste can be used as energy for drying food waste. Garbage combustion equipment replaced.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention, FIG. 2 is a schematic diagram showing another embodiment 1 of the present invention, and FIG. 3 is a longitudinal sectional view of main parts showing another embodiment 2 of the present invention. FIG. 4 is a schematic diagram showing another embodiment 3 of the present invention. 2...Outer casing, 2b...Outside air inflow passage, 3...Ceramic container, 4...Heater, 6...Saucer, 7,2
4... Bottom plate, 9... Ash storage container, 11... Exhaust passage, 12... Deodorizing device, 13... Exhaust duct, 14
...Air supply duct, 15...Fan motor. #2 3 eyes of grass 46L

Claims (1)

[Claims] 1. A food waste heating device that heats food waste to a temperature above its ignition temperature, and a far-infrared ray generating device that generates far-infrared rays;
A food waste combustion device characterized in that the food waste combustion device is configured to irradiate the surface of the food waste with the far infrared rays. 2. Claim 1, wherein the far-infrared rays generating means generates far-infrared rays having a wavelength that substantially matches the molecular vibration frequency of water contained in the garbage.
Garbage combustion equipment as described in section. 3. The far-infrared generating means is made of ceramic, and the ceramic is heated to a temperature higher than the ignition temperature of the garbage by the garbage heating means. The garbage combustion device described in item 1. 4. The food waste combustion device according to claim 1, 2, or 3, wherein the food waste heating means is configured to heat the food waste to 350° C. or higher. 5. The far-infrared ray generating means is configured to generate the most far-infrared rays having a wavelength of 3.2 μm band, Claims 1, 2, 3, or 4
Garbage combustion equipment as described in section. 6. A ceramic container made of a ceramic material and a heating means for heating the ceramic container, which irradiates far-infrared rays from the ceramic container to the garbage stored in the ceramic container, and also heats the garbage from the ceramic container. A food waste combustion device characterized in that the food waste is heated to a temperature higher than the ignition temperature of the food waste. 7. The organic waste is heated to 350° C. or higher, and the ceramic container generates far-infrared rays having a wavelength of 3.2 μm at most. Garbage combustion equipment. 8. An outer casing made of a heat-resistant material, a ceramic container made of a ceramic material housed in the outer casing, a heating means for heating the container, and a tray provided in the ceramic container on which food waste is placed. a bottom plate disposed below the tray and receiving ash after combustion of the garbage; an exhaust passage communicating with the upper part of the ceramic container; and an outside air inflow passage for introducing outside air into the ceramic container. The heating means heats the food waste placed on the saucer to a temperature higher than its ignition temperature, and emits far infrared rays having a wavelength substantially matching the molecular frequency of water contained in the food waste to the ceramic material. A food waste combustion device that irradiates the food waste from a container. 9. The garbage combustion according to claim 8, wherein the heating means is composed of a heating wire wrapped around the outer periphery of the ceramic container, and the surface of the heating wire is coated with ceramic. Device. 10. The garbage combustion device according to claim 8, wherein the exhaust passage is provided with a deodorizing device that removes the smell of combustion gas from the garbage. 11. The garbage combustion device according to claim 8, wherein the saucer is made of a ceramic material. 12. The food waste according to claim 8, wherein an ash storage container is provided below the bottom plate to temporarily store the ash after the food waste is burned and turned into ashes. Combustion device. 13. The garbage combustion apparatus according to claim 8, further comprising means for feeding outside air into the combustion gas discharged from the exhaust passage to cool the combustion gas. 14. The garbage combustion apparatus according to claim 8, wherein the saucer and the bottom plate are configured to be reversible. 15. The garbage combustion device according to claim 8, wherein the bottom plate is provided with an outside air inlet.