EP2585762A2 - Verfahren zur vorbeugung des austritts eines abgases aus einem lebensmittelabfallentsorgers - Google Patents
Verfahren zur vorbeugung des austritts eines abgases aus einem lebensmittelabfallentsorgersInfo
- Publication number
- EP2585762A2 EP2585762A2 EP11798342.9A EP11798342A EP2585762A2 EP 2585762 A2 EP2585762 A2 EP 2585762A2 EP 11798342 A EP11798342 A EP 11798342A EP 2585762 A2 EP2585762 A2 EP 2585762A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- heater
- exhaust passage
- food waste
- exhaust gas
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 239000010794 food waste Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000001035 drying Methods 0.000 claims abstract description 74
- 230000004044 response Effects 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 113
- 230000008569 process Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000013021 overheating Methods 0.000 description 5
- 235000019645 odor Nutrition 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
Definitions
- the present invention relates, in general, to methods of preventing exhaust gas from leaking out of a food waste disposer and, more particularly, to a method of preventing exhaust gas from leaking out of a food waste disposer in such a way that detecting the temperature of the exhaust gas is done to prevent the internal pressure of the food waste disposer from increasing, and temperature of an exhaust passage and the temperature of a heater are detected to prevent a drying furnace from overheating.
- bad odors generated from food waste disposers are caused by a combination of various kinds of gases.
- gases such as the kind of food, the period over which food waste is left behind, a temperature at which food waste is treated, etc., the ingredients of exhaust gas differ. If food waste decomposes or undergoes abnormal fermentation, that is, anaerobic fermentation, the food waste discharges a large amount of exhaust gas which stinks and has toxicity which may be harmful to human beings.
- Food waste disposers which are connected to the sinks of households or are provided separately from sinks remove water from food waste through a series of processes including stirring, dehydrating, cutting and drying, thus reducing the volume of food waste, and thereby markedly the amount of food waste.
- the following technique merits consideration, that is, measuring the temperature of gas generated in the drying furnace or the temperature of gas drawn into the drying furnace and controlling the operation of a means for heating the drying furnace in response to the measured temperature.
- controlling the heating means in response to only the temperature of the gas causes the problem of reducing the efficiency with which the food waste disposer treats food waste, because only the internal pressure of the drying furnace is taken into account and thus the operation of the heating means frequently stops.
- an object of the present invention is to provide a method of effectively preventing exhaust gas from leaking out of an apparatus, such as a food waste disposer, which includes a drying furnace that generates the exhaust gas.
- Another object of the present invention is to provide a method which can control the operation of a heating means at appropriate times to solve the problem of reducing the food waste treatment efficiency of a food waste disposer which may result from the prevention of leakage of exhaust gas.
- a further object of the present invention is to provide a method which can not only prevent exhaust gas from leaking out but can also prevent the drying furnace from overheating.
- the present invention provides a method of preventing exhaust gas from leaking out of a drying furnace, including: (a) measuring a temperature of an exhaust passage through which the exhaust gas generated in the drying furnace by a heater flows; (b) turning off the heater when the temperature of the exhaust passage is a first temperature or more; and (c) measuring a temperature of the heater when the temperature of the exhaust passage is less than the first temperature, and turning off the heater when the temperature of the heater reaches a second temperature or more.
- the method may further include: after (c) measuring, (d) turning on the heater again when the temperature of the exhaust passage is less than the first temperature and the temperature of the heater is less than the second temperature.
- heat exchange may be performed on the exhaust gas to form recirculation gas and the recirculation gas is re-supplied into the drying furnace through the exhaust passage
- the temperature of the exhaust passage that is measured at (a) may comprise a temperature of the exhaust passage which is measured when the recirculation gas flows through the exhaust passage.
- the exhaust passage may comprise an exhaust gas duct through which the exhaust gas flows, and a recirculation gas duct through which the recirculation gas flows.
- the temperature of the exhaust passage that is measured at (a) may comprise a temperature measured in the recirculation gas duct.
- the temperature of the heater that is measured at (c) may comprise a temperature measured by a sensor disposed on the heater or by a sensor disposed adjacent to the heater.
- the first temperature may range from 60°C to 110°C. Preferably, the first temperature may range from 75°C to 85°C. More preferably, the first temperature may be 80°C.
- the second temperature may range from 100°C to 200°C.
- the second temperature may range from 140°C to 150°C. More preferably, the second temperature may be 145°C.
- the temperature of the exhaust passage or the temperature of the heater may be measured by a temperature sensor or a temperature and humidity sensor.
- the drying furnace may comprise a drying furnace of a food waste disposer, and the exhaust gas may comprise gas generated by heating food waste input into the drying furnace.
- the present invention provides a food waste disposer, including: a drying furnace provided with a heater; a heater temperature sensor disposed on a surface of the heater or at a position adjacent to the heater; an exhaust passage through which exhaust gas generated by the heater flows; an exhaust passage temperature sensor disposed in the exhaust passage; and a control unit controlling the heater in response both to a temperature of the heater measured by the heater temperature sensor and a temperature of the exhaust passage measured by the exhaust passage temperature sensor.
- the exhaust passage may comprise: an exhaust gas duct through which the exhaust gas is discharged out of the drying furnace; and a recirculation gas duct through which heat exchange is performed on the exhaust gas to form recirculation gas and the recirculation gas is re-supplied into the drying furnace.
- the temperature of the exhaust passage may comprise a temperature measured in the recirculation gas duct.
- the present invention can be applied to all kinds of apparatuses having drying furnaces which are heated by heaters and thus generate the exhaust gas and can effectively prevent exhaust gas from leaking out of the apparatuses.
- the present invention can be more effectively applied to food waste disposers which heat food waste containing a large amount of water.
- the present invention is effective for circulation food waste disposers in which exhaust gas is condensed and re-supplied into a drying furnace as recirculation gas.
- the present invention not only measures the temperature of an exhaust passage to control the internal pressure of the drying furnace in response to the measured temperature but also measures the temperature of the exhaust passage and the temperature of a heater to prevent the drying furnace from overheating.
- FIG. 1 is a perspective view of a food waste disposer which can prevent the leakage of exhaust gas generated by food waste, according to the present invention
- FIG. 2 is a flowchart of a method of preventing exhaust gas from leaking out of the food waste disposer according to the present invention.
- FIG. 3 is a graph showing a temperature (a) of a heater, a temperature (b) of a drying furnace measured by a furnace temperature sensor, and a temperature (c) of a recirculation gas measured in a recirculation gas duct as a function of time during which the food waste disposer is operated according to the present invention.
- FIG. 1 is a perspective view of the food waste disposer which can prevent leakage of exhaust gas generated from food waste, according to the present invention.
- the food waste disposer includes a drying furnace 100, a heater 120, a heater temperature sensor 125, an exhaust gas outlet port 150, a furnace temperature sensor 200, a circulation fan 250, an exhaust passage, a buffer unit 400, a heat exchanger 500, a cooling fan 550, a recirculation gas inlet port 650, a recirculation gas temperature sensor 700 and a control unit 800.
- the exhaust passage includes an exhaust gas duct 300 and a recirculation gas duct 600.
- the drying furnace 100 receives food waste and treats it by carrying out a series of processes including stirring, dehydrating, drying and pulverizing, before high-temperature and high-humidity gas evaporated from the food waste is discharged out of the drying furnace 100 through the exhaust gas outlet port 150.
- the furnace temperature sensor 200 detects the temperature in the drying furnace 100 and outputs it.
- the furnace temperature sensor 200 may comprise a temperature and humidity sensor which can sense both temperature and humidity.
- any sensing device can be used as the furnace temperature sensor 200, so long as it can sense temperature.
- the circulation fan 250 receives, from the exhaust gas outlet port 150, high-temperature and high-humidity exhaust gas evaporated from food waste and circulates it.
- the exhaust gas duct 300 functions to transmit the high-temperature and high-humidity exhaust gas of food waste from the circulation fan 250 to the buffer unit 400.
- the buffer unit 400 receives the high-temperature and high-humidity exhaust gas of food waste from the exhaust gas duct 300, condenses it, and discharges condensation water therefrom.
- the heat exchanger 500 receives from the buffer unit 400 food waste exhaust gas from which condensation water has been removed, and then cools the exhaust gas.
- the recirculation gas duct 600 receives the cooled food waste exhaust gas from the heat exchanger 500 and supplies it again into the drying furnace 100 through the recirculation gas inlet port 650.
- the exhaust passage including the exhaust gas duct 300 and the recirculation gas duct 600 is a circulation passage. Exhaust gas may directly condense in the circulation passage, thus forming condensation water.
- the recirculation gas temperature sensor 700 is mounted to the recirculation gas duct 600 or the recirculation gas inlet port 650 to measure the temperature of cooled and dried recirculation gas which is re-supplied into the drying furnace 100.
- the recirculation gas temperature sensor 700 may comprise a temperature and humidity sensor which can sense both temperature and humidity. Furthermore, any sensing device can be used as the recirculation gas temperature sensor 700, so long as it can sense temperature.
- the heater 120 heats the drying furnace 100 in response to the control of the control unit 800 to dry food waste in the drying furnace 100.
- the heater temperature sensor 125 senses the temperature temp2 of the heater 120 and outputs it.
- the heater temperature sensor 125 may be disposed in the heater 120 or, alternatively, it may be disposed adjacent to the heater 120, as will be explained in detail later.
- the control unit 800 controls various operations of the food waste disposer.
- the control unit 800 controls the heater 120 in response to the temperature temp2 of the heater 120 and the temperature temp1 of the exhaust passage according to the method of the present invention. The detailed control method will be described below.
- the main concept of the method of the present invention is to measure the temperature temp1 of the exhaust passage and the temperature temp2 of the heater and control the On/Off status of the heater in response to the temperatures temp1 and temp2.
- the heater when at least either the temperature temp1 of the exhaust passage or the temperature temp2 of the heater is a predetermined reference temperature or more, the heater is turned off to prevent exhaust gas from leaking out and prevent the elements from overheating. After the heater has been turned off, the entire temperature of the elements is reduced. When both the temperature temp1 of the exhaust passage and the temperature temp2 of the heater falls below the reference temperature, the heater is turned on again.
- the exhaust passage includes the exhaust gas duct 300 and the recirculation gas duct 600.
- the temperature temp1 of the exhaust passage can be measured in any one of the exhaust gas duct 300 and the recirculation gas duct 600.
- the temperature temp1 of the exhaust passage will be explained as being a temperature measured in the recirculation gas duct 600, the temperature temp1 of the exhaust passage must be interpreted as a temperature measured in the exhaust passage including the recirculation gas duct 600.
- the temperature temp2 of the heater is measured to detect whether the drying furnace is overheated by the heater. Therefore, the heater temperature sensor 125 must be understood as a concept including not only a temperature sensor which is disposed in the heater or is brought into direct contact with the heater to measure the temperature of the heater, but also a temperature sensor which can measure the surrounding temperature of the heater or the temperature of a member that directly or indirectly covers the heater. Furthermore, the temperature temp2 of the heater must also be regarded as a concept including not only the temperature of the heater itself but also the temperature of the surroundings of the heater.
- step S100 when a user turns on a power button of the food waste disposer after opening an inlet door of the food waste disposer and supplying food waste thereinto, the heater 120, the circulation fan 250 and the cooling fan 550 are turned on and operated.
- the heater 120 heats the drying furnace 100 to dry the food waste in response to the control of the control unit 800.
- the heater temperature sensor 125 senses the temperature temp2 of the heater and outputs it.
- turning the heater 120 on and off is periodically repeated over the time that the food waste disposer is being operated. Thereby, the temperature of the drying furnace 100 repeatedly increases and falls back down.
- the furnace temperature sensor 200 senses the temperature of the drying furnace 100 and outputs it.
- the drying furnace 100 treats the food waste by carrying out a series of processes including stirring, dehydrating, drying and pulverizing on it.
- High-temperature and high-humidity exhaust gas generated during the treatment is discharged out of the drying furnace 100 through the exhaust gas outlet port 150.
- step S130 high-temperature and high-humidity exhaust gas which is discharged from the drying furnace 100 is moved to the exhaust gas duct 300 by the operation of the circulation fan 250.
- step S140 the exhaust gas reaches the heat exchanger 500 and is cooled.
- condensation water forms.
- the condensation water enters the buffer unit 400 and then is discharged out of the food waste disposer.
- high-temperature and high-humidity exhaust gas becomes low-temperature recirculation gas after undergoing heat exchange.
- the low-temperature recirculation gas is re-supplied into the drying furnace 100 through the recirculation gas duct 600, thus forming a circulation cycle, at step S150.
- the furnace temperature sensor 200 measures the temperature of the drying furnace in real time.
- the control unit 800 receives temperature data of the drying furnace from the furnace temperature sensor 200 and determines whether the temperature of the drying furnace has reached a third temperature.
- the third temperature preferably ranges from 105°C to 115°C and, more preferably, it is 110°C.
- the temperature temp1 of the recirculation gas is measured by the recirculation gas temperature sensor 700, at step S210.
- the algorithm for preventing the exhaust gas from leaking out of the food waste disposer of the present invention finishes.
- the control unit 800 receives data about the temperature temp1 of the recirculation gas from the recirculation gas temperature sensor 700 and determines whether the temperature temp1 has reached a first temperature.
- the first temperature ranges from 60°C to 110°C and, more preferably, it ranges from 75°C to 85°C.
- the inventor of the present invention found out from many tests that it is most preferable that the first temperature be 80°C.
- the control unit 800 turns off the heater 120 while maintaining the circulation fan 250 and the cooling fan 550 in their turned-on states so that food waste exhaust gas discharged from the drying furnace 100 sufficiently circulates and is cooled.
- the temperature temp2 of the heater is measured to check whether the heater is overheating, at step S310.
- the control unit 800 receives the temperature temp2 of the heater from the heater temperature sensor 125 and determines whether the temperature temp2 has reached a second temperature.
- the second temperature ranges from 100°C to 200°C and, more preferably, it ranges from 140°C to 150°C.
- the inventor of the present invention found out from many tests that it is most preferable that the second temperature be 145°C.
- step S450 the control unit 800 turns off the heater 120 while maintaining the turned-on state of the circulation fan 250 and the cooling fan 550 so that food waste exhaust gas discharged from the drying furnace 100 sufficiently circulates and is cooled.
- the process is returned to step S110 and repeats the succeeding steps.
- step S450 when the heater 120 is turned off while the circulation fan 250 and the cooling fan 550 are maintained in turned-on states, the temperature temp1 of the recirculation gas slowly falls, at step S460. Furthermore, the internal pressure of the drying furnace 100 can no longer increase but is reduced, at step S470.
- the reason for this is that as the temperature of the drying furnace 100 falls after the heater 120 has been turned off, the amount of high-temperature and high-humidity exhaust gas evaporated from food waste is reduced, and because exhaust gas that has been cooled and dried by the circulation fan 250 and the cooling fan 550 is re-supplied into the drying furnace 100 via the recirculation gas duct 600, the temperature temp1 of the recirculation gas falls.
- the internal pressure of the drying furnace 100 can be prevented from excessively increasing.
- a bad smell and vapors generated from food waste is restrained from leaking out of the food waste disposer, thus fundamentally removing risk factors which may damage the health of the human body and the natural environment.
- the heater be turned on when the temperature temp 1 of recirculation gas which is measured in real time is less than the first temperature and the temperature temp2 of the heater is also less than the second temperature.
- a food waste disposer may be configured in such a way that turning the heater on and off is repeated in section T2 on a cycle shorter than that of section T1 in which drying food waste is continuous.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Drying Of Solid Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20100059319 | 2010-06-22 | ||
PCT/KR2011/004425 WO2011162507A2 (en) | 2010-06-22 | 2011-06-16 | Method of preventing exhaust gas from leaking out of food waste disposer |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2585762A2 true EP2585762A2 (de) | 2013-05-01 |
Family
ID=45371923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11798342.9A Withdrawn EP2585762A2 (de) | 2010-06-22 | 2011-06-16 | Verfahren zur vorbeugung des austritts eines abgases aus einem lebensmittelabfallentsorgers |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130161402A1 (de) |
EP (1) | EP2585762A2 (de) |
JP (1) | JP2013531217A (de) |
KR (1) | KR20110139112A (de) |
CN (1) | CN103119365A (de) |
WO (1) | WO2011162507A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101618222B1 (ko) * | 2014-09-16 | 2016-05-04 | 주식회사 스핀즈이노베이션 | 증기를 응축 및 순환시킬 수 있는 드럼트랩 및 이를 사용한 음식물 쓰레기 처리장치 |
KR102276946B1 (ko) * | 2019-12-27 | 2021-07-13 | (주)지에이 | 음식 폐기물 처리 장치 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11138127A (ja) * | 1997-11-07 | 1999-05-25 | Matsushita Electric Ind Co Ltd | 厨芥処理装置 |
JP3812152B2 (ja) * | 1998-06-19 | 2006-08-23 | 松下電器産業株式会社 | マイクロコンピュータ及び偏向制御回路を内蔵した集積回路 |
JP2002346529A (ja) * | 2001-05-28 | 2002-12-03 | Hitachi Constr Mach Co Ltd | 生ごみ処理機及び生ごみ処理機の攪拌制御方法 |
JP3874631B2 (ja) * | 2001-06-29 | 2007-01-31 | 高木産業株式会社 | 生ごみ処理方法及びその装置 |
JP3914730B2 (ja) * | 2001-09-21 | 2007-05-16 | 日立アプライアンス株式会社 | 厨芥処理機 |
KR200383472Y1 (ko) * | 2005-02-15 | 2005-05-03 | 이명열 | 가정용 음식물 쓰레기 처리기 |
KR101017616B1 (ko) * | 2008-07-28 | 2011-02-28 | 주식회사 매직카라 | 음식물 쓰레기 처리기 및 그 제어 방법 |
-
2011
- 2011-06-16 EP EP11798342.9A patent/EP2585762A2/de not_active Withdrawn
- 2011-06-16 CN CN2011800309679A patent/CN103119365A/zh active Pending
- 2011-06-16 JP JP2013516500A patent/JP2013531217A/ja not_active Withdrawn
- 2011-06-16 WO PCT/KR2011/004425 patent/WO2011162507A2/en active Application Filing
- 2011-06-16 US US13/805,864 patent/US20130161402A1/en not_active Abandoned
- 2011-06-16 KR KR1020110058716A patent/KR20110139112A/ko active Search and Examination
Non-Patent Citations (1)
Title |
---|
See references of WO2011162507A3 * |
Also Published As
Publication number | Publication date |
---|---|
JP2013531217A (ja) | 2013-08-01 |
WO2011162507A3 (en) | 2012-04-26 |
CN103119365A (zh) | 2013-05-22 |
KR20110139112A (ko) | 2011-12-28 |
US20130161402A1 (en) | 2013-06-27 |
WO2011162507A2 (en) | 2011-12-29 |
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