US20150090247A1 - Cooking Device With Pyrolysis Function - Google Patents

Cooking Device With Pyrolysis Function Download PDF

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Publication number
US20150090247A1
US20150090247A1 US14/348,890 US201314348890A US2015090247A1 US 20150090247 A1 US20150090247 A1 US 20150090247A1 US 201314348890 A US201314348890 A US 201314348890A US 2015090247 A1 US2015090247 A1 US 2015090247A1
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US
United States
Prior art keywords
cooking
heating means
cooking cavity
oven
combustion
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.)
Abandoned
Application number
US14/348,890
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English (en)
Inventor
Younghee Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20150090247A1 publication Critical patent/US20150090247A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C9/00—Stoves or ranges heated by a single type of energy supply not covered by groups F24C3/00 - F24C7/00 or subclass F24B
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities
    • F24C15/2014—Removing cooking fumes from oven cavities with means for oxidation of cooking fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type
    • F24C14/025—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type for gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation

Definitions

  • the present invention relates to a combustion device that can remove odor-producing materials in the cooking cavity. Specifically, the present invention relates to a heating means in the cooking cavity that can cause thermal decomposition of odor-producing materials, in addition to cooking the food by radiation of its heat.
  • a number of different ways for disposing cooking fumes such as adsorption method using activated carbon filters, a combustion method, a catalytic converter method, an ionic precipitation method, and a plasma discharging method are well known.
  • the combustion method is highly effective in removing cooking fumes, which are oxidized at high temperature to yield harmless carbon dioxide and water.
  • the combustion method is proven to be economical and reliable enough to be used for the incineration of toxic chemical and biological wastes.
  • Some of the cooking ovens have self-cleaning functions to cause pyrolysis at temperatures of about 400-500° C. in order to remove food contaminants accumulated on the wall of the cooking cavity.
  • the above case adopts a method of re-heating the cooking cavity after taking out the food and cannot solve the problem of diffusing fumes during cooking. Therefore, a device for effectively removing contaminants generated during cooking is desired.
  • the present invention provides cooking device for effectively removing cooking fumes in the cooking cavity.
  • An object of the present invention is to provide an energy efficient combustion device which includes a heating means adapted to heat up food in the cooking cavity and to provide a cleaning effect.
  • Another object of the present invention is to keep the user safe from the harmful cooking fumes by removing the fumes immediately as soon as they are generated in the cooking cavity.
  • the cooking device with pyrolysis function includes a cooking cavity surrounded by cavity walls and an oven door, a heating means located within the cooking cavity for emitting heat therefrom, a combustion tube having a hollow portion formed to surround the heating means, the combustion tube being heated by the heating means and radiating its heat to the center of the cooking cavity, a combustion space formed between the heating means and the combustion tube in which cooking fumes are decomposed by the heat from the heating means, a fan adapted to withdraw air in the cooking cavity and to transfer a part or all of the air through the connection tube into the combustion space, a connection tube for connecting fluid communication between the combustion tube and the fan, and a gas outlet for venting out the steam and air in the combustion space to the outside of the cooking device.
  • the heating means located on the upper portion of the cooking cavity comprises any source selected from flame generated by the oxidation of fuel or a heater connected to power source.
  • the combustion tube has a hollow tube-type structure with a gas outlet formed at one end of the combustion tube and a combustion tube inlet formed at the opposite end where the heating means is connected.
  • the heating means is enclosed by the combustion tube.
  • a combustion space is formed between the heating means and the combustion tube.
  • the combustion space and the combustion tube are heated by the heating means.
  • the combustion tube radiates its heat to the center of the cooking cavity.
  • the fumes generated during cooking are introduced to the combustion tube to be thermally decomposed. Therefore, high energy efficiency is achieved by the heating means which has the dual function of warming food via the combustion tube, which radiates its heat to the cooking cavity, as well as causing thermal decomposition of cooking fumes.
  • the fan receives power generated from a motor and forcibly convects the air within the cooking cavity.
  • the fan is connected to the combustion tube through the connection tube and introduces the air and cooking fumes into the combustion space.
  • the fan prevents the cooking fumes from spreading out of the cooking cavity by maintaining a lower-than-the-atmospheric pressure within the cooking cavity.
  • connection tube is installed between the combustion tube and the fan and functions as a passage for a part or all of the air inhaled by the fan into the combustion space. It is desirable that the connection tube is connected to the combustion tube near the connection tube inlet, maximizing the contacting distance of cooking fumes with the heating means to improve the efficiency of the pyrolysis process.
  • the gas outlet is formed at one end of the combustion tube and functions as a passage for the steam and mixed gas in the combustion tube to the outside of the cooking device.
  • the cooking device further includes a temperature sensor for sensing the operating temperature of the cooking cavity, a bottom heating means adapted to warm the bottom portion of the cooking cavity, and an air supply adapted to accelerate the oxidation of cooking fumes by injecting air into the combustion space.
  • the combustion process of contaminants in the cooking cavity is as follows.
  • a heat source is supplied to the heating means to emit heat, the temperature of the combustion space and the combustion tube increases.
  • steam and fumes from the food are generated in the cooking cavity.
  • the fan withdraws air and fumes in the cooking cavity, and transfer a part or all of the air and fumes through the connection tube into the combustion space.
  • the cooking fumes undergo thermal decomposition (pyrolysis) in the combustion space maintained at 700° C. or higher temperature, and become carbon dioxide and water.
  • the mixed gas in the combustion space travels towards the gas outlet to be vented out of the cooking device.
  • FIG. 1 is a front view showing a cooking device 10 according to the present invention.
  • FIG. 2 is a sectional view taken along the line 2 - 2 of FIG. 1 .
  • FIG. 3 is a side sectional view taken along the line 3 - 3 of FIG. 2 .
  • FIG. 4 is a perspective view of some components showing a flow of air for thermal decomposition.
  • FIG. 1 is a front view showing a cooking device 10 according to the present invention.
  • An oven door 25 having a door knob 28 is rotatably attached to an oven body 20 forming the outward appearance of the oven 10 .
  • the oven door 25 seals the front side of a cooking cavity 30 to prevent volatile compounds or smells from escaping from the cooking cavity 30 , to make racks easily go in and out of the cooking cavity, and to allow a user to check the progress of cooking.
  • a control panel 22 is disposed at one side of the front face of the oven body 20 .
  • the control panel 22 includes at least one controlling means for setting temperature and time so that the inside of the cooking cavity 30 can keep a preset temperature for an appropriate period of time.
  • FIG. 2 is a sectional view taken along the line 2 - 2 of FIG. 1 showing the inside configuration of the cooking cavity 30 and the oven body 20
  • FIG. 3 is a sectional view taken along the line 3 - 3 of FIG. 2 .
  • the cooking cavity 30 is surrounded by a cavity wall 35 and has an open front face with an interior cooking space.
  • the cooking cavity 30 further includes a heating means 50 mounted at the upper part of the cooking cavity 30 and a combustion tube 60 having a hollow portion formed to surround the heating means 50 .
  • the “upper part” indicates that the heating means 50 and the combustion tube 60 are located at the higher position than the center of the cooking cavity 30 .
  • the combustion tube 60 has a hollow tube-type structure with a gas outlet 90 formed at one end of the combustion tube 60 and a combustion tube inlet 62 formed at the opposite end where the heating means 50 is connected.
  • the heating means 50 comprises any heating source selected from a flame generated by the oxidation of fuel or a heater connected to a heat source 100 .
  • a combustion space 65 is formed between the heating means 50 and the combustion tube 60 .
  • the cooking fumes can undergo thermal decomposition (pyrolysis) in the combustion space 65 maintained at 700° C. or higher by the heating means 50 .
  • the combustion tube 60 As the combustion tube 60 is heated by the heating means 50 , the radiant heat of the combustion tube 60 is applied to the center of the cooking cavity 30 to warm the food. Therefore, it is preferable that the combustion tube 60 is configured to extensively circulate air in the upper portion of the cooking cavity 30 to effectively radiate its heat to the center of the cooking cavity 30 .
  • the combustion tube 60 is selected from a group consisting of ceramics, heat-resisting metals, and a combination of both in order to withstand the heat generated by the heating means 50 . It is preferable that the combustion tube 60 made of ceramics be enclosed by a heat resisting metallic cover (not shown) in order to protect it from external physical impacts.
  • the cooking cavity 30 further includes a fan 70 driven by a motor for forcibly convecting the air within the cooking cavity 30 .
  • the fan 70 is a centrifugal an and is connected in fluid communication to the combustion tube 60 .
  • the fan 70 withdraws air from the cooking cavity and discharges a part or all of the air into the combustion space 65 .
  • the air is forcibly convected around the hot combustion tube 60 resulting in a rapid increase of temperature in the cavity and cooking speed.
  • the fan 70 also prevents the cooking fumes from spreading out of the cooking cavity 30 by maintaining a lower than atmospheric pressure within the cooking cavity 30 . It is possible that the amount of air introduced into the combustion space 65 to be controlled by the fan 70 to adjust the pressure of the cooking cavity 30 . The amount of cooking fumes to be pyrolyzed can also be controlled.
  • connection tube 80 is installed between the combustion tube 60 and the fan 70 and functions as a passage for a part or all of the air inhaled by the fan 70 into the combustion space 65 . It is desirable that the connection tube 80 is connected to the combustion tube 60 near the connection tube inlet 62 , maximizing the contacting distance of cooking fumes with the heating means 50 to improve the efficiency of the pyrolysis process.
  • the gas outlet 90 is formed at one end of the combustion tube 60 and functions as a passage for the steam and mixed gas in the combustion space 65 to the outside of the cooking device 10 .
  • An air supply 68 and heat source 100 are installed at the connection tube inlet 62 .
  • the air supply 68 provides fresh air into the combustion space 65 to accelerate the oxidation of cooking fumes.
  • the air supply 68 also provides fresh air required for the oxidation of fuel in the case the heating means 50 comprises a flame.
  • the heat source 100 comprises any source selected from fossil fuel or a wire connected to a power source.
  • the cooking device 10 further includes a bottom heating means 55 adapted to warm the bottom portion of the cooking cavity 30 and expedite the cooking of the food.
  • the bottom heating means 55 comprises any heating source selected from flame generated by the oxidation of fuel or a heater connected to power source. It is desirable that the bottom heating means 55 be located outside of the cooking cavity 30 as illustrated in FIG. 3 if the bottom heating means 55 comprises a flame. In the case the bottom heating means 55 comprises a heater, it is preferred that the bottom heating means 55 be installed inside of the cooking cavity 30 .
  • the cooking device 10 further includes a temperature sensor 40 for sensing the operating temperature of the cooking cavity 30 .
  • the temperature sensor 40 detects the changes of temperature in the cooking cavity 30 and may turn off the operation of the heating means 50 or the bottom heating means 55 in the case the cooking cavity 30 is significantly above the preset temperature.
  • FIG. 4 is a perspective view of some components showing a flow of air for thermal decomposition. Referring to the drawings, the combustion process of contaminants in the cooking cavity will be described in detail as follows.
  • the temperature of the combustion space 65 and the combustion tube 60 increases.
  • the fan 70 withdraws air and fumes from the cooking cavity 30 and discharges a part or all of the air and fumes through the connection tube 80 into the combustion space 65 .
  • the cooking fumes undergo thermal decomposition (pyrolysis) in the combustion space 65 maintained at 700° C. or higher temperature and become carbon dioxide and water.
  • the mixed gas in the combustion space 65 travels towards the gas outlet 90 to be vented out of the cooking device 10 .
  • the heating means 50 and the fan 70 are turned on so as to thermally decompose the contaminants generated during cooking.
  • the combustion cycle comes to an end when the heat source 100 to the heating means 50 and electricity to the fan 70 is terminated.
  • the cooking device 10 is efficient in use of energy because the heating means 50 has the dual function of warming food via the combustion tube 60 , which applies its radiant heat to the cooking cavity 30 , as well as causing the thermal decomposition of the cooking fumes.
US14/348,890 2012-11-15 2013-10-01 Cooking Device With Pyrolysis Function Abandoned US20150090247A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2012-0129222 2012-11-15
KR20120129222A KR101306428B1 (ko) 2012-11-15 2012-11-15 열분해 기능을 가진 조리기기
PCT/KR2013/008770 WO2014077505A1 (ko) 2012-11-15 2013-10-01 열분해 기능을 가진 조리기기

Publications (1)

Publication Number Publication Date
US20150090247A1 true US20150090247A1 (en) 2015-04-02

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ID=49455603

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/348,890 Abandoned US20150090247A1 (en) 2012-11-15 2013-10-01 Cooking Device With Pyrolysis Function

Country Status (10)

Country Link
US (1) US20150090247A1 (ru)
EP (1) EP2921780A4 (ru)
JP (1) JP2016502637A (ru)
KR (1) KR101306428B1 (ru)
CN (1) CN103930006B (ru)
AU (1) AU2013345700A1 (ru)
BR (1) BR112015010869A2 (ru)
CA (1) CA2889658A1 (ru)
RU (1) RU2015122094A (ru)
WO (1) WO2014077505A1 (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110192781A (zh) * 2018-02-24 2019-09-03 青岛海尔智能技术研发有限公司 烤箱
CN110192782A (zh) * 2018-02-24 2019-09-03 青岛海尔智能技术研发有限公司 烤箱
CN110360605A (zh) * 2018-04-10 2019-10-22 深圳驭龙电器有限公司 电加热装置及加热灶

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KR101451063B1 (ko) * 2014-01-21 2014-10-14 이영희 열분해 기능을 가진 볶음기
KR102556755B1 (ko) 2016-09-09 2023-07-18 삼성전자주식회사 오븐

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US2929373A (en) * 1958-02-14 1960-03-22 Berns Air King Corp Portable fan-exhausted cooking device
US3612032A (en) * 1969-10-10 1971-10-12 Inst Gas Technology Muffle-type gas-fired self-cleaning oven
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Publication number Priority date Publication date Assignee Title
CN110192781A (zh) * 2018-02-24 2019-09-03 青岛海尔智能技术研发有限公司 烤箱
CN110192782A (zh) * 2018-02-24 2019-09-03 青岛海尔智能技术研发有限公司 烤箱
CN110360605A (zh) * 2018-04-10 2019-10-22 深圳驭龙电器有限公司 电加热装置及加热灶

Also Published As

Publication number Publication date
WO2014077505A1 (ko) 2014-05-22
KR101306428B1 (ko) 2013-09-09
CN103930006A (zh) 2014-07-16
JP2016502637A (ja) 2016-01-28
BR112015010869A2 (pt) 2017-07-11
AU2013345700A1 (en) 2015-06-11
RU2015122094A (ru) 2017-01-10
EP2921780A1 (en) 2015-09-23
CA2889658A1 (en) 2014-05-22
CN103930006B (zh) 2016-10-12
EP2921780A4 (en) 2016-12-21

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