WO2007037600A1 - Apparatus for disposing of food waste - Google Patents

Apparatus for disposing of food waste Download PDF

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Publication number
WO2007037600A1
WO2007037600A1 PCT/KR2006/003723 KR2006003723W WO2007037600A1 WO 2007037600 A1 WO2007037600 A1 WO 2007037600A1 KR 2006003723 W KR2006003723 W KR 2006003723W WO 2007037600 A1 WO2007037600 A1 WO 2007037600A1
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WO
WIPO (PCT)
Prior art keywords
fermentation tank
air
fermentation
food waste
pipe shaft
Prior art date
Application number
PCT/KR2006/003723
Other languages
French (fr)
Inventor
Chon Chang-Ho
Original Assignee
Tai Ryung, Jung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR10-2005-0089779 priority Critical
Priority to KR20050089779A priority patent/KR100772428B1/en
Application filed by Tai Ryung, Jung filed Critical Tai Ryung, Jung
Publication of WO2007037600A1 publication Critical patent/WO2007037600A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K10/00Animal feeding-stuffs
    • A23K10/10Animal feeding-stuffs obtained by microbiological or biochemical processes
    • A23K10/12Animal feeding-stuffs obtained by microbiological or biochemical processes by fermentation of natural products, e.g. of vegetable material, animal waste material or biomass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B3/00Destroying solid waste or transforming solid waste or contaminated solids into something useful or harmless
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/01Deodorant compositions
    • A61L9/014Deodorant compositions containing sorbent material, e.g. activated carbon
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/015Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/16Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22Ionisation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F7/00Mixers with rotary stirring devices in fixed receptacles, i.e. movement of the receptacle not being meant to effect the mixing; Kneaders
    • B01F7/02Mixers with rotary stirring devices in fixed receptacles, i.e. movement of the receptacle not being meant to effect the mixing; Kneaders with stirrers rotating about a horizontal or inclined axis
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90Apparatus therefor
    • C05F17/914Portable or transportable devices, e.g. transport containers or trucks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00Drying solid materials or objects by processes involving the application of heat
    • F26B3/18Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/04Garbage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/141Feedstock
    • Y02P20/145Feedstock the feedstock being materials of biological origin
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/40Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Abstract

The present invention relates to an apparatus for disposing of food waste, and more particularly, to an apparatus for disposing of food waste which can decompose and ferment the food waste in a shorter time by maintaining temperatures, moisture and air in the interior of a fermentation tank in an optimized condition for activities of fermentation microorganism, to thereby form organic compost and feedstuff or make it extinct, and also can filter an odor or air generated in the fermentation tank. The apparatus comprises a main body including an interior space, a casing and a cover, wherein the casing is provided with an upper portion to be opened and a lower portion having moving wheels for easier movement, and the top of the casing is provided with the cover including an opening and closing lid and a switch pad panel connected to a controller at a predetermined location thereof; a fermentation tank, including the lower portion of a semicircular shape, an interior reaction space, and a connection portion having a plurality of holes that are integrally formed at the upper portion thereof, wherein a double exhaust door is attached at the forward side of the connection portion of a tank body, and an outlet is provided with an exhaust lid, and a fermentation tank cover having an entrance of the waste food is provided at the top of the tank body; an agitator, including a central driving pipe shaft which is mounted to be rotatable to shaft holes, and an impeller integrally disposed on the central driving pipe shaft, wherein the central driving pipe shaft is associated with a circular auxiliary support having a plurality of fixed holes into which bolts are screw-connected, and the impeller is integrally formed with a vertical auxiliary support; a power transfer part, including a driving motor, a chain gear and a chain belt, wherein the chain gear installed at the rotational axle of the driving motor is provided with the chain belt via the chain gear installed at the central driving pipe shaft, in order to transfer a rotational force to the agitator; an air suction part, including an air suction pipe which is disposed at one side of the upper portion of the fermentation tank cover, an air suction fan for compulsorily sucking in air from the outside, to which a rectangular filter portion having a filter is connected, a reverse-flow check valve connected to the other side of the rectangular filter portion, and a purified air emission tube, of which the end passes through the fermentation tank cover to be drawn into the inside of the fermentation tank; a sterilization part, including an ozone generator which is disposed at one side of the upper portion of the fermentation tank cover and is connected to an air supply through an ozone pipe, and an ozone emission tube of which the end is connected to a predetermined position of the purified air emission tube; a temperature supply part, including a ceramic heater rod mounted at the inside of the central driving pipe shaft, an insulator disposed along the outer surface of the fermentation tank, and a hot-wire heater placed between the fermentation tank and the insulator; an air emitting part, including an exhaust vent having a rectangular shape, which is designed to be projected at the right side of the fermentation tank cover so that the gas and moisture generated in the fermentation tank are gathered at a projected upper portion thereof, and an exhaust pipe, connected to the exhaust vent, for compulsorily emitting the gas in the fermentation tank; a deodorizer for filtering the air emitted from the air emitting part; and a controller for controlling the supply of power and driving conditions of respective elements.

Description

Description
APPARATUS FOR DISPOSING OF FOOD WASTE
Technical Field
[1] The present invention relates to an apparatus for disposing of food waste, and more particularly, to an apparatus for disposing of food waste which can decompose and ferment the food waste in a shorter time by maintaining temperatures, moisture and air in the interior of a fermentation tank in an optimized condition for activities of fermentation microorganism, to thereby form organic compost and feedstuff or make it extinct, and also can filter an odor or air generated in the fermentation tank. Background Art
[2] As the conventional apparatuses for disposing the waste food, there have been a dehydration mechanism for eliminating moisture contained in the food waste and compressing the dehydrated materials, mechanisms including a grinder, a disposer and a compressor which drys, minutely grinds and compresses the dehydrated food waste to obtain a reduced volume, and then discharges the resultant waste to a drain or a garbage container, etc.
[3] Also, there have been developed a variety of fermentation methods and apparatuses, including a method of using an earthworm, a method of introducing microorganism into the garbage container to make compost via decomposition, and an apparatus for disposing the food waste using the microorganism that lives at a low temperature, etc. However, the conventional apparatuses for disposing the food waste have several problems or drawbacks.
[4] Firstly, since the fermentation microorganism becomes extinct at a high temperature during fermentation, they should be again fed after a predetermined time lapses to thereby cause the increasing of a maintenance cost and inconvenience in use.
[5] Secondly, an odor generated during or after fermentation is emitted to the outside through an outlet to thereby give out filthy smells, or its part is forced to be emitted to the outside via a hose or a pipe.
[6] Thirdly, the air that is injected through an inlet of a fermentation tank is not uniformly fed into the inside of the fermentation tank with a sufficient amount necessary to the fermentation microorganism, but is mostly sucked or emitted through an air emitting part mounted at an interior upper portion of the fermentation tank, to thereby lower decomposition capacity and generate strong odors of the non- decomposed food waste.
[7] Fourthly, where the food waste disposing mechanism is repeatedly operated at a uniform temperature in a predetermined time, it takes a lot of maintenance costs such as electric charges.
[8] Fifthly, an external hot-wire heater is mainly used to provide an appropriate temperature in the fermentation tank, which is for conveying the heat of a high temperature from the outside to the inside of the fermentation tank so as to maintain an appropriate temperature of the fermentation microorganism. But, there appears a phenomenon that the fermentation microorganism and carriers (sawdust, rice chaff, etc.) are sticked to an inner wall of the fermentation tank, and thus it needs to remove the materials sticked to the inner wall of the fermentation tank by a scraping tool after a predetermined time lapses. Disclosure of Invention Technical Problem
[9] In order to solve the above problems, it is an object of the present invention to provide an apparatus for disposing food waste, comprising a means for properly maintaining the most appropriate temperature to dry the food waste and ferment the microbes in the fermentation tank, which can enhance the disposal efficiency of the food waste, quickly emit odors (exhaust gas) generated in the fermentation reservoir, and also intercept harmful microorganism in advance from the exhaust gas to be emitted by using charcoal and a transition metal catalyst, and eliminate odor components to be thrown off during fermenting the food waste. Technical Solution
[10] In order to achieve the above object, there is provided an apparatus for disposing of food waste, comprising: a main body including an interior space, a casing and a cover, wherein the casing is provided with an upper portion to be opened and a lower portion having moving wheels for easier movement, and the top of the casing is provided with the cover including an opening and closing lid and a switch pad panel connected to a controller at a predetermined location thereof; a fermentation tank, including the lower portion of a semicircular shape, an interior reaction space, and a connection portion having a plurality of holes that are integrally formed at the upper portion thereof, wherein a double exhaust door is attached at the forward side of the connection portion of a tank body, and an outlet is provided with an exhaust lid, and a fermentation tank cover having an entrance of the waste food is provided at the top of the tank body; an agitator, including a central driving pipe shaft which is mounted to be rotatable to shaft holes, and an impeller integrally disposed on the central driving pipe shaft, wherein the central driving pipe shaft is associated with a circular auxiliary support having a plurality of fixed holes into which bolts are screw-connected, and the impeller is integrally formed with a vertical auxiliary support; a power transfer part, including a driving motor, a chain gear and a chain belt, wherein the chain gear installed at the rotational axle of the driving motor is provided with the chain belt via the chain gear installed at the central driving pipe shaft, in order to transfer a rotational force to the agitator; an air suction part, including an air suction pipe which is disposed at one side of the upper portion of the fermentation tank cover, an air suction fan for compulsorily sucking in air from the outside, to which a rectangular filter portion having a filter is connected, a reverse-flow check valve connected to the other side of the rectangular filter portion, and a purified air emission tube, of which the end passes through the fermentation tank cover to be drawn into the inside of the fermentation tank; a sterilization part, including an ozone generator which is disposed at one side of the upper portion of the fermentation tank cover and is connected to an air supply through an ozone pipe, and an ozone emission tube of which the end is connected to a predetermined position of the purified air emission tube; a temperature supply part, including a ceramic heater rod mounted at the inside of the central driving pipe shaft, an insulator disposed along the outer surface of the fermentation tank, and a hot-wire heater placed between the fermentation tank and the insulator; an air emitting part, including an exhaust vent having a rectangular shape, which is designed to be projected at the right side of the fermentation tank cover so that the gas and moisture generated in the fermentation tank are gathered at a projected upper portion thereof, and an exhaust pipe, connected to the exhaust vent, for compulsorily emitting the gas in the fermentation tank; a deodorizer for filtering the air emitted from the air emitting part; and a controller for controlling the supply of power and driving conditions of respective elements.
Advantageous Effects
[11] The present invention having the above structure divides the fermentation temperature of the fermentation tank according to processing steps of the food waste, adjusts an appropriate temperature necessary for the fermentation microorganism in a quick time without applying high heat by providing a ceramic heater rod mounted in the fermentation tank and an external hot-wire heater, to thereby accelerate the fermentation and decompose the food waste at a high speed, and prevents the loss of the heat in the fermentation tank to the outside. Also, since the ceramic heater rod in the fermentation tank emits the radiated heat of far infrared rays, it prevents the food waste, fermentation microorganism and carriers from being charred and sticked to the inner wall of the fermentation tank to thereby suppress a carbonization phenomenon of the carrier, and that the fermentation microorganism becomes extinct due to excessive moisture and high temperature. And, the fermentation of the food waste is completed at a high speed in a short time, and the fermented materials can be used as an organic fertilizer or feedstuff of a high quality. [12] Also, so as to sufficiently supply the air as an essential condition of fermenting the microorganism, a filter of the far infrared rays and anion radiation deodorizes and neutralizes impurities that may be contained in the air supplied to the fermentation tank through an air suction part by radiating the far infrared rays and anion, and then fully supplies fresh air to the fermentation microorganism, to thereby increase high-speed fermentation and self -propagation of the fermentation microorganism and use the same semi-permanently without re-feeding of the microorganism. Also, by using a circular deodorization tube which is filled up with charcoal having a strong absorption property and an ion-combined transition metal catalyst, the gas and odor generated from the fermentation tank are safely eliminated to thereby prevent environmental pollution due to exhaust gases, also the circular deodorization tube can be maintained at a low cost since it needs no separate electric device. Brief Description of the Drawings
[13] FIG. 1 is a perspective view illustrating an apparatus for disposing food waste according to the present invention;
[14] FIG. 2 is a cut-away perspective view illustrating the inner construction of an apparatus for disposing food waste according to the present invention;
[15] FIG. 3 is a plan sectional view illustrating the construction of an apparatus for disposing food waste according to the present invention;
[16] FIG. 4 is a front sectional view illustrating the construction of an apparatus for disposing food waste according to the present invention;
[17] FIG. 5 is a right-side sectional view illustrating the construction of an apparatus for disposing food waste according to the present invention;
[18] FIG. 6 is a left-side sectional view illustrating the construction of an apparatus for disposing food waste according to the present invention;
[19] FIG. 7 is a rear sectional view illustrating the construction of an apparatus for disposing food waste according to the present invention;
[20] FIG. 8 is a perspective view illustrating the construction of a fermentation tank as a main element according to the present invention;
[21] FIG. 9 is a sectional view illustrating a state that an agitator is installed according to the present invention;
[22] FIG. 10 is a perspective view illustrating the structure of the agitator according to the present invention;
[23] FIG. 11 is a sectional view illustrating another embodiment of the agitator according to the present invention;
[24] FIG. 12 is a sectional view illustrating the construction of an air suction part, having a filter, for supplying the air to a fermentation tank in an apparatus for disposing food waste according to the present invention; [25] FIG. 13 is a perspective view showing the structure of a filter according to the present invention; [26] FIG. 14 is a sectional view illustrating the construction of an ozone device having a sterilization function in an apparatus for disposing food waste according to the present invention; [27] FIG. 15 is a sectional view illustrating the construction of a temperature supply part in an apparatus for disposing food waste according to the present invention; [28] FIG. 16 is a sectional view illustrating the construction of an air emitting part in an apparatus for disposing food waste according to the present invention; [29] FIG. 17 is a view illustrating the suction and exhaust of the air according to the present invention; [30] FIG. 18 is a perspective view illustrating the structure of a deodorizer in an apparatus for disposing food waste according to the present invention; [31] FIG. 19 is a sectional view illustrating the construction of a deodorizer in an apparatus for disposing food waste according to the present invention; [32] FIG. 20 is a view illustrating an example of a deodorizer in an apparatus for disposing food waste according to the present invention; and [33] FIG. 21 is an exploded perspective view illustrating an outlet of remainders in an apparatus for disposing food waste according to the present invention.
Best Mode for Carrying Out the Invention [34] The present invention comprises a main body 10 in which moving wheels 102 are mounted, a fermentation tank 20 for fermenting food waste, an agitator 30 for mixing and agitating the food waste, a power transfer part 40 for transferring a rotational force to the agitator 30, an air suction part 50 for feeding air to the fermentation tank 20, a sterilization part 60, a temperature supply part 70 for adjusting the temperature of the interior of the fermentation tank 20, an air emitting part 80 for compulsorily emitting the gas in the fermentation tank 20, a deodorizer 90 for filtering the air emitted from the air emitting part 80, and a controller 100 for controlling the supply of electric power and driving conditions of respective elements.
Mode for the Invention [35] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. [36] FIG. 1 is a perspective view illustrating an apparatus for disposing food waste according to the present invention, FIG. 2 is a cut-away perspective view illustrating the interior construction of an apparatus for disposing food waste according to the present invention, FIGs. 3 to 7 are a plan sectional view, a front sectional view, a right- side sectional view, a left-side sectional view and a rear- sectional view respectively. The apparatus of the present invention comprises a main body 10 in which moving wheels 102 are mounted, a fermentation tank 20 for fermenting food waste, an agitator 30 for mixing and agitating the food waste, a power transfer part 40 for transferring a rotational force to the agitator 30, an air suction part 50 for feeding the air to the fermentation tank 20, a sterilization part 60, a temperature supply part 70 for adjusting the temperature of the interior of the fermentation tank 20, an air emitting part 80 for com- pulsorily emitting the air in the fermentation tank 20, a deodorizer 90 for filtering the air emitted from the air emitting part 80, and a controller 100 for controlling the supply of power and driving conditions of respective elements.
[37] In more specifically explaining the structure of the main body 10, the main body 10 includes an interior space, a casing 10a and a cover 10b. The casing 10a is provided with an upper portion to be opened and a lower portion having moving wheels 102 for easier movement. On the top of the casing 10a, the cover 10b including an opening and closing lid 12 and a switch pad panel 101 connected to the controller 100 at a predetermined location thereof, are provided.
[38] As shown in FIGs. 2 to 6, the fermentation tank 20 is provided with the lower portion of a semicircular shape, an interior reaction space 20-1, and a connection portion 20-2 having a plurality of holes that are integrally formed at the upper portion thereof. As shown in FIG. 16, a double exhaust door 23 is attached at the forward side of the connection portion 20-2 of a tank body 20a, and an outlet 24 is provided with an exhaust lid 22, and a fermentation tank cover 21 having an entrance 21a of the waste food is provided at the top of the tank body 20a.
[39] As shown in FIGs. 8 to 11, the agitator 30 comprises a central driving pipe shaft 31 which is mounted to be rotatable to shaft holes, and an impeller 32 integrally disposed on the central driving pipe shaft 31. The central driving pipe shaft 31 is associated with a circular auxiliary support 32b having a plurality of fixed holes 32c into which bolts are screw-connected, and the impeller 32 is integrally formed with a vertical auxiliary support 32a.
[40] The impellers 32 mounted on the central driving pipe shaft 31 are spaced apart in a zigzag form thereon. Two or three impellers 32 are disposed at a Vi-Vi position over all the length of the central driving pipe shaft 31, and are tilted at an angle of 20 to 45°toward the right or left side to uniformly mix and agitate the fermentation microorganism and carriers of the waste food.
[41] When the central driving pipe shaft 31 is rotated and an agitation action is taken, a certain pressure is applied to the impellers 32. In order to reinforce the impellers 32, the vertical auxiliary support 32a and fixed supports 34a and 34b of the impellers that are integrally incorporated with the central driving pipe shaft 31 are provided to prevent any breakdown.
[42] When the agitator 30 is mounted at the central driving pipe shaft 31 installed in the fermentation tank 20 in sequence of an oil ring 47, a retainer 44, a bearing 46, a bearing housing 45, a chain gear 43a on the central driving pipe shaft 31. The oil ring 47 and the retainer 44 should be necessarily mounted to prevent the leaking of moisture from the fermentation tank 20. In case that disposal of the food waste is made in large quantities, a plurality of agitators can be disposed to increase the efficiency of agitation, as shown in FIGs. 9 to 11.
[43] The power transfer part 40 comprises a driving motor 40a, a chain gear 43a and a chain belt 42, as shown in FIGs. 2 and 8. The chain gear 43 installed at the rotational axle of the driving motor 40a is provided with the chain belt 42 via the chain gear 43 a installed at the central driving pipe shaft 31, in order to transfer a rotational force to the agitator 30.
[44] The air suction part 50, as shown in FIGs. 12 to 14, comprises an air suction pipe 54 which is disposed at one side of the upper portion of the fermentation tank cover 21, an air suction fan 51 for compulsorily sucking in the air from the outside, to which a rectangular filter portion 52 having a filter 53 is connected, a reverse-flow check valve 55 connected to the other side of the rectangular filter portion 52, and a purified air emission tube 56 of which the end passes through the fermentation tank cover 21 to be drawn into the inside of the fermentation tank 20.
[45] The sterilization part 60, as shown in FIG. 14, comprises an ozone generator 61 which is disposed at one side of the upper portion of the fermentation tank cover 21 and is connected to an air supply 62 through an ozone pipe 63, and an ozone emission tube 64 of which the end is connected to a predetermined position between the rectangular filter portion 52 and the reverse-flow check valve 55.
[46] The temperature supply part 70, as shown in FIG. 15, comprises a ceramic heater rod 71 mounted at the inside of the central driving pipe shaft 31, an insulator 73 disposed along the outer surface of the fermentation tank 20, and a hot-wire heater 72 placed between the fermentation tank 20 and the insulator 73. The temperature supply part 70 is connected to a controller 100.
[47] The air emitting part 80, as shown in FIGs. 16 and 17, comprises an exhaust vent 81 having a rectangular shape, which is designed to be projected at the right side of the fermentation tank cover 21, and allows the gas and moisture generated in the fermentation tank 20 to be gathered at a projected upper portion thereof, and an exhaust pipe 83 which is connected to the exhaust vent 81.
[48] The exhaust pipe 83 has a circular shape to minimize the friction of the air and makes the flow of the gas and moisture easier, thereby maximizing its emission, and is connected to an exhaust fan 82 which is rotated according to a signal of the controller 100. The moisture and gas of the fermentation tank 20 is emitted to the deodorizer 90 through the exhaust pipe 83.
[49] The deodorizer 90, as shown in FIGs. 18 and 19, is connected to a ceramic band heater 75. The ceramic band heater 75 is connected to a circular deodorization tube 91 in which a deodorization outlet 92 is integrally incorporated. The circular deodorization tube 91 is filled up with charcoal having a strong absorption property of the gas and odor to be emitted and an ion-combined transition metal catalyst by steps.
[50] In reviewing the operation state of the present invention having the above structure, the driving motor 40a, the temperature supply part 70 and the air emitting part 80 are supplied with electric power by the switching of the switch pad panel 101 connected to the controller 100 at the initial time of the operation.
[51] When the power is applied, the opening and closing lid 12 of the main body 10 isned, and fermentation microorganism and carriers such as rice chaff, sawdust, etc., are introduced into the fermentation tank 20 via the entrance 21a. Then, if a fermentation mode or an automatic mode on the switch pad panel 101 is selected to maintain appropriate temperatures, a fermentation mode LED or an automatic mode LED is turned on, and food waste is introduced via the opening and closing lid 12 one hour later.
[52] Where an optimum condition is maintained in the fermentation tank 20 since initial one hour lapses, the food waste is continuously supplied to the fermentation tank 20 via the entrance 21a. At this time, in a case that power saving is required, if the fermentation mode on the switch pad panel 101 is selected after the food waste is fed, the controller 100 controls the temperatures and operation time to be stirred in the fermentation tank 20 per time, to then obtain the power saving effect therefrom.
[53] If the selection of fermentation modes is troublesome, or power saving is not considered at the intial time of or during the operation, the food waste can be fermented and decomposed by selecting the automatic mode having a predetermined repetition function of the operation.
[54] The fermentation microorganism used in the present invention is aerobic thermophile, and a temperature resistance of the fermentation microorganism is in a range of -10 to 1000C, and has an optimum decomposition capacity at 45 to 650C, which can be used semi-permanently without re-feeding of the microorganism by properly supplying temperature, air and moisture.
[55] The high-speed fermentation microorganism of the present invention is obtained by the mutation culture of complex species of the aerobic thermophile that generally belong to bacillus, and other vegetable enzyme for accelerating the fermentation are included with appropriate quantity to make high-speed decomposition.
[56] Rice chaff, sawdust, etc., are used as the carriers, and particularly the rice chaff which is obtained after the polishing of rice, is anaerobolically fermented since the rice chaff contains a component of enzyme resistant starch of the rice to then generate a short-chain fatty acid. The generated fermentation substances provide synergism of fermentation and decomposition of the food waste, and the fermentation microorganism used in the present invention according to such generation is very appropriate as a carrier to be inhabited and propagated. Also, the completely decomposed remainders after the food waste is fed can be used as an organic fertilizer and feedstuff.
[57] An appropriate temperature in the interior of the fermentation tank can be maintained by the temperature supply part 70 installed at the inside of the central driving pipe shaft 31, which supplies the interior temperature of the fermentation tank 20 from the inside and the outside and adjusts the appropriate temperature for the fermentation microorganism in a short time.
[58] As shown in FIG. 15. the hot-wire heater 72 is circularly attached along the outer surface of the fermentation tank 20 and is covered with the insulator 73 to prevent the loss of heat.
[59] The ceramic heater rod 71 is mounted at the interior of the central driving pipe shaft
31 to generate a predetermined heat for supplying it to the inside of the fermentation tank 20. A temperature sensor 74 senses the temperature of the fermentation tank 20, and outputs a signal of the sensed result to the controller 100 to control the temperature supply part 70.
[60] The hot-wire heater 72 and the ceramic heater rod 71 inside the fermentation tank
20 emit both far infrared rays and heat, and adjust a temperature difference between the center of the fermentation tank and the outside thereof. Such construction can prevent the food waste, fermentation microorganism and carriers from being scorched and sticked to the inner wall of the fermentation tank 20 due to high temperature.
[61] An optimum temperature of the fermentation tank 20 depends on the signal of the controller 100 according to selection of the fermentation mode or the automatic mode. For high-speed fermentation, the interior temperature of the fermentation tank 20 is maintained less than 50~70°C in one to six hours. After fermentation is initiated, the interior temperature of the fermentation tank 20 is less than 40~50°C in six to ten hours, and less than 30~40°C in ten or more hours, respectively, to thereby provide the optimum condition for decomposing the food waste.
[62] The temperature for maintaining the optimum environmental condition in the fermeion tank 20 is in the range of 30~70°C according to the fermentation time. If the food waste is not fed for a long time, for example two days or more, the power saving mode is selected to set the interior temperature of the fermentation tank 20 to be less than 30~40°C. Such selection can prevent the excessive drying and carbonization phenomenon of the carrier, and extinction of the fermentation microorganism due to continuous high temperature, and also preclude a case of raking out the materials sticked to the inner wall of the fermentation tank 20 due to the shortage of moisture or carbonization phenomenon with a tool.
[63] The food waste is fed to the fermentation tank 20 and is agitated by the agitator 30.
The agitator 30 is operated by receiving the control signal of the controller 100 according to selection of the fermentation mode, automatic mode or power saving mode to then turn the LEDs of respective corresponding modes on. Then, the driving motor 40a which is attached to a bottom plate 14 of the present apparatus, is operated to transfer its driving force to the central driving pipe shaft 31 which is installed in the fermentation tank 20 via the chain belt 42 and the chain gear 43.
[64] If the driving force of the driving motor 40a is supplied to the central driving pipe shaft 31, the central driving pipe shaft 31 is rotated. At this time, the central driving pipe shaft 31 to which the impellers 32 are attached is normally rotated for 6-30 minutes, and then stops for 10-30 minutes. Under re-operation, the central driving pipe shaft 31 is invertedly rotated for 6-30 minutes, and then the fermentation microorganism, carriers and food waste thrown into the fermentation tank 20 are mixed.
[65] The impellers 32 of the central driving pipe shaft 31 have a zigzag shape centering on the central driving pipe shaft 31 to mix the materials well. According to capacity of the fermentation tank 20, one to four central driving pipe shafts 31 having the zigzag- shaped impellers 32 can be arranged to make the fermentation microorganism, carriers and food waste to be mixed well, thereby providing the best fermentation condition.
[66] At the time of the operation of the agitator 30, the air suction part 50 is together worked. The air suction part 50 receives the air from the outside by operating the air suction fan 51, and passes the air through the filter 53 which is placed in the rectangular filter portion 52 and is composed of a radiation body of far infrared rays and an anionic radiation body.
[67] The rectangular filter portion 52, as shown in FIG. 13, has the structure of a porous sintered body of a honeycomb shape in which the inorganic substance of the radiation body of far infrared rays and the inorganic substance of the anionic radiation body are mixed.
[68] The filter 53 deodorizes and neutralizes impurities that may be contained in the air, and emits the far infrared rays and anion, and allows the fermentation microorganism to be sufficiently fermented in the fermentation tank 20.
[69] The air introduced into the air suction pipe 54 is sprayed from the upper portion of the fermentation tank cover 21 to the bottom of the fermentation tank 20 using the air suction fan 51 so that the air can be sufficiently supplied to the fermentation microorganism at the lower portion of the fermentation tank 20. The air emitting part 80 may function to greatly reduce an amount of air to be directly emitted. [70] The operation of the suction and emission of the air will be described in detail with reference to FIG. 12. A certain amount of fresh air introduced into the air suction part 50 is sprayed from the upper portion of the fermentation tank cover 21 to the fermentation microorganism and carriers to have the maximum contact with the air.
[71] The exhaust vent 81 of the air emitting part 80 is designed to be elevated higher than the fermentation tank cover 21 of the fermentation tank 20, to make an amount of direct emission of the air introduced from the air suction part 50 less.
[72] Also, the air supplied from the air suction part 50 has the effect of eliminating the odor generated when the food waste is fed into and fermented in the fermentation tank
20, by emitting of the far infrared rays and anion. The filter 53 of the rectangular filter portion 52 in the air suction part 50 emits the far infrared rays and anion to make the fermentation microorganism greatly activated, thereby increasing self -propagation and decomposition ability. The reverse-flow check valve 55 prevents the gas and odor in the fermentation tank 20 from being reversely emitted to the outside through the purified air emission tube 56.
[73] Meanwhile, various kinds of organic substances generated during fermenting and decomposing a variety of the food waste are sterilized by the sterilization part 60. The sterilization part 60 comprises an ozone generator 61, an air supply 62 and an ozone pipe 63. The ozone generator 61 is connected to the air supply 62 that is generally used for aquariums through the ozone pipe 63. The sterilization part 60 functions to sterilize all kinds of odors, unpleasant smells of organic substances,bacterium, etc., generated when the apparatus is operated according to the selection of the fermentation mode or the automatic mode after the food waste is fed to the fermentation tank 20 and the opening and closing lid 12 is closed, or when the agitator 30 is rotated or stirred according to the signal of the controller 100 in the power saving mode.
[74] The air emitting part 80 emits the gas and moisture generated in the fermentation tank 20. The air emitting part 80 comprises an exhaust vent 81 having a rectangular shape, which is designed to be projected at the right side of the fermentation tank cover
21, and allows the gas and moisture generated in the fermentation tank 20 to be gathered at an upper projected portion thereof, and the exhaust pipe 83 which is connected to the exhaust vent 81.
[75] The exhaust pipe 83 has a circular shape to minimize the friction of air and makes the flow of the gas and moisture easier, thereby maximizing its emission, and is connected to the exhaust fan 82 which is rotated according to the signal of the controller 100 to suck in the moisture and air of the fermentation tank 20. The sucked gas and moisture are transferred to the deodorizer 90 through the exhaust pipe 83.
[76] The ceramic band heater 75 is first operated according to the signal of the controller
100 one to five minutes before the exhaust fan 82 works, and is pre-heated to the temperature of 50~ 1000C, and then the radiation heat of the far infrared rays is sufficiently supplied to the interior of the exhaust pipe 83. Therefore, the gas, moisture, unpleasant smells, etc., which pass through the exhaust fan 82 are first vaporized and neutralized. The gas, moisture and unpleasant smells that passed through the ceramic band heater 75 are transferred to the circular deodorization tube 91 which is filled up with charcoal having a strong absorption property and an ion-combined transition metal catalyst 93 by steps, and then various odors, unpleasant smells of organic substances, the remainders of ozone, peculiar smell generated during decomposing the food waste are removed.
[77] The ceramic heater rod 71 is a ceramic heater rod which generally emits far infrared rays, and a heater such as a coil heater, a sheath heater, a cartridge heater, etc., is attached to the fixed support 76 of the ceramic heater rod, and then is separately mounted at the inside of the central driving pipe shaft 31. According to the supply of electric power, the heater of the ceramic heater rod 71 emits the heat and then the heat of the far infrared rays emitted from the ceramic heater rod 71 is transmitted to the central driving pipe shaft 31 and the impellers 32, and then supplied to the fermentation tank 20.
[78] At this time, the emitted gas and moisture uniformly contact with the transition metal catalyst 93 in the circular deodorization tube 91, and the effect of deodorization can be increased by catalystic action therefrom. Also, multi circular deodorization tubes can be properly added per step according to capacity of the food waste disposal apparatus.
[79] The remainders that the fermentation of the food waste is completed in the fermentation tank 20 are automatically discharged through the outlet 24.
[80] In the exhaust process, if the exhaust mode on the switch pad panel 101 is selected, the driving motor 40 is operated according to the signal of the controller 100 to rotate the agitator 30, and then the remainders after the fermentation of the food waste is completed can be automatically drawn out through the outlet 24.
[81] The outlet 24 is provided with a double exhaust door 23 at the outer surface of the fermentation tank 20 and an exhaust lid 22 in order to prevent the food waste, microorganism and carriers in the fermentation tank 20 from being thrown off to the outside during fermentation. Such a double structure prevents doubly the outflow of the above materials. The outlet 24 has an inclined lower surface so that the remainders to be automatically exhausted are easily drawn out to the outside.
[82] When the remainders are discharged, the exhaust fan 82 of the air emitting part 80 is also operated according to the signal of the controller 100 to avoid the emission of the odor to the outside during discharging.
[83] Meanwhile, a safe operation should be secured until the food waste is fed and discharged in agitating the food waste and cultivating the fermentation microorganism, as made by the safety function of the present invention.
[84] As an operation of the above safety function, once the opening and closing lid 12 is opened to feed the food waste, the sensor 13 senses the opening of the lid 12 and transmits a signal to the controller 100 so that an operation of the driving motor 40a for driving the agitator 30 is stopped to prevent any danger factor, such as damage of fingers by the impellers 32.
[85] Also, in order to prevent the fermentation gas generated during fermentation an- domposition from being emitted to the outside when the lid 12 is opened, an automatic exhaust function of the odor is added. For this function, once the lid 12 of the main body is opened, the exhaust fan 82 of the air emitting part 80 is operated to emit the air and moisture to the deodorizer 90 via the exhaust pipe 83. Also, since the safety device is very important, the device of a double structure is provided. The device is a safety mode on the switch pad panel 101. When an emergency factor occurs or is found during the operation of the disposal apparatus, if the safety mode is selected, the power supply of the main body is interrupted to remove the danger factors in advance.
[86]
[87]

Claims

Claims
[1] An apparatus for disposing of food waste, comprising: a main body including an interior space, a casing and a cover, wherein the casing is provided with an upper portion to be opened and a lower portion having moving wheels for easier movement, and the top of the casing is provided with the cover including an opening and closing lid and a switch pad panel connected to a controller at a predetermined location thereof; a fermentation tank, including the lower portion of a semicircular shape, an interior reaction space, and a connection portion having a plurality of holes that are integrally formed at the upper portion thereof, wherein a double exhaust door is attached at the forward side of the connection portion of a tank body, and an outlet is provided with an exhaust lid, and a fermentation tank cover having an entrance of the waste food is provided at the top of the tank body; an agitator, including a central driving pipe shaft which is mounted to be rotatable to shaft holes, and an impeller integrally disposed on the central driving pipe shaft, wherein the central driving pipe shaft is associated with a circular auxiliary support having a plurality of fixed holes into which bolts are screw- connected, and the impeller is integrally formed with a vertical auxiliary support; a power transfer part, including a driving motor, a chain gear and a chain belt, wherein the chain gear installed at the rotational axle of the driving motor is provided with the chain belt via the chain gear installed at the central driving pipe shaft, in order to transfer a rotational force to the agitator; an air suction part, including an air suction pipe which is disposed at one side of the upper portion of the fermentation tank cover, an air suction fan for com- pulsorily sucking in air from the outside, to which a rectangular filter portion having a filter is connected, a reverse-flow check valve connected to the other side of the rectangular filter portion, and a purified air emission tube, of which the end passes through the fermentation tank cover to be drawn into the inside of the fermentation tank; a sterilization part, including an ozone generator which is disposed at one side of the upper portion of the fermentation tank cover and is connected to an air supply through an ozone pipe, and an ozone emission tube of which the end is connected to a predetermined position of the purified air emission tube; a temperature supply part, including a ceramic heater rod mounted at the inside of the central driving pipe shaft, an insulator disposed along the outer surface of the fermentation tank, and a hot-wire heater placed between the fermentation tank and the insulator; an air emitting part, including an exhaust vent having a rectangular shape, which is designed to be projected at the right side of the fermentation tank cover so that the gas and moisture generated in the fermentation tank are gathered at a projected upper portion thereof, and an exhaust pipe, connected to the exhaust vent, for compulsorily emitting the gas in the fermentation tank; a deodorizer for filtering the air emitted from the air emitting part; and a controller for controlling the supply of power and driving conditions of respee elements. [2] The apparatus according to claim 1, wherein the fermentation tank further comprises a sensor for sensing the opening and closing of an entrance. [3] The apparatus according to claim 1, wherein the rectangular filter portion has a structure of the porous sintered body of a honeycomb shape in which the inorganic material of the radiation body of far infrared rays and the inorganic material of the anionic radiation body are mixed. [4] The apparatus according to claim 1, wherein a ceramic heater rod is mounted at the inside of the central driving pipe shaft. [5] The apparatus according to claim 1, wherein the temperature supply part further comprises a temperature sensor. [6] The apparatus according to claim 1, wherein a ceramic band heater is further disposed between the air emitting part and the deodorizer. [7] The apparatus according to claim 1, wherein an end of the ozone pipe is connected to a predetermined position of the rectangular filter portion and a reverse-flow check valve. [8] The apparatus according to claim 1, wherein fixed supports of the impeller is disposed to be parallel to a horizontal central axis at the outside of the central driving pipe shaft. [9] The apparatus according to claim 1, wherein a plurality of the agitators are spaced apart in the fermentation tank. [10] The apparatus according to claim 1, wherein the circular deodorization tube is filled up with charcoal having a strong absorption property of the gas and odor to be emitted and an ion-combined transition metal catalyst by steps.
PCT/KR2006/003723 2005-09-27 2006-09-19 Apparatus for disposing of food waste WO2007037600A1 (en)

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