KR20030073114A - Structure for mixing gas of burner in gas radiation oven range - Google Patents
Structure for mixing gas of burner in gas radiation oven range Download PDFInfo
- Publication number
- KR20030073114A KR20030073114A KR1020020012508A KR20020012508A KR20030073114A KR 20030073114 A KR20030073114 A KR 20030073114A KR 1020020012508 A KR1020020012508 A KR 1020020012508A KR 20020012508 A KR20020012508 A KR 20020012508A KR 20030073114 A KR20030073114 A KR 20030073114A
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- South Korea
- Prior art keywords
- gas
- burner
- radiation
- air
- supply pipe
- Prior art date
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 42
- 238000002485 combustion reaction Methods 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims description 58
- 239000002737 fuel gas Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000567 combustion gas Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 11
- 239000011521 glass Substances 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 7
- 238000010411 cooking Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/04—Stoves or ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate
- F24C3/047—Ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/002—Radiant burner mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/1412—Special features of gas burners for radiant burners
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Description
본 발명은 가스복사조리기용 복사버너의 가스혼합구조에 관한 것으로, 특히 복사버너의 가스혼합관에서 연료가스와 공기가 충분히 혼합되어 분사되도록 함으로써 연소성능을 향상시키도록 하는데 적합한 가스복사조리기용 복사버너의 가스혼합구조에 관한 것이다.The present invention relates to a gas mixing structure of a radiant burner for a gas radiation cooker, and more particularly to a gas burner radiant burner suitable for improving combustion performance by allowing a mixture of fuel gas and air to be injected in a gas mixing tube of a radiant burner. The gas mixing structure of the present invention.
복사조리기는 발열체를 가열하여 발생되는 복사열(RADIATION HEAT)을 이용하여 조리물을 조리하는 기기로서 세라믹글래스가 상면에 복개되므로 화염이 외부로 노출되지 않게 되어 화재의 위험이 없고, 청소성이 양호하여 최근에 점차 사용이 증가되고 있고, 그에 대한 활발한 연구가 진행되고 있다.Radiation cooker is a device that cooks food by using radiant heat generated by heating the heating element. Ceramic glass is covered on the upper surface so that the flame is not exposed to the outside. In recent years, the use is gradually increasing, and active research on it is in progress.
그 일예가 발열체로 히팅코일을 사용하고, 그 히팅코일을 전기를 이용하여 발열시키는 복사조리기로서, 이와 같은 복사조리기는 기존에 개발되어 콘도나 업소에 주로 설치 및 사용되어 지고 있다.One example is a radiating cooker that uses a heating coil as a heating element, and generates the heating coil using electricity. Such a radiating cooker has been developed in the past and is mainly installed and used in a condo or a business.
그러나 상기와 같이 히팅코일을 이용하는 복사조리기는 여러가지 잇점이 있음에도 불구하고 히팅코일을 가열하기 위한 전기소모가 많아서 경제성이 좋지 못하여 일반가정에는 쉽게 설치 또는 사용할 수 있도록 개발되지 못하는 문제점을 가지고 있는 것이었다.However, the radiating cooker using the heating coil as described above has a problem in that it is not developed to be easily installed or used in a general household due to the poor economic efficiency due to the large amount of electric power for heating the heating coil despite the advantages.
최근에는 이 분야의 개발자들에 의하여 전기 대신에 비교적 저렴한 가스를 이용하여 발열체를 가열하는 형태의 가스복사조리기의 개발에 많은 연구가 진행되고 있으나, 복사버너에 연료가스와 공기가 충분히 혼합됨과 아울러 분사되도록 하여 연소성능을 획기적으로 향상시키는데는 많은 어려움이 있는 문제점이 있었다.Recently, many researches have been carried out by developers in this field to develop a gas radiation cooker in which a heating element is heated by using a relatively inexpensive gas instead of electricity. However, fuel gas and air are sufficiently mixed and injected into the radiation burner. There was a problem that there are a lot of difficulties in improving the combustion performance significantly.
본 발명의 주목적은 상기와 같은 여러 문제점들을 해소하고자 하는 것이다.The main object of the present invention is to solve the above problems.
본 발명의 다른 목적은 연료가스와 공기가 가스혼합관에서 충분히 혼합됨과 아울러 분사되도록 하여 연소성능을 향상시키도록 하는데 적합한 가스복사조리기용 복사버너의 가스혼합구조를 제공함에 있다.It is another object of the present invention to provide a gas mixing structure of a radiation burner for a gas radiation cooker which is adapted to improve the combustion performance by allowing fuel gas and air to be sufficiently mixed and injected in the gas mixing tube.
도 1은 본 발명의 가스혼합구조가 구비된 가스복사조리기를 부분단면하여 보인 사시도.1 is a perspective view showing a partial cross-sectional view of the gas radiation cooker equipped with a gas mixing structure of the present invention.
도 2는 본 발명에 따른 복사버너를 보인 단면도.2 is a cross-sectional view showing a radiation burner according to the present invention.
도 3은 본 발명의 복사버너에서 혼합가스가 분사되는 상태를 보인 단면도.Figure 3 is a cross-sectional view showing a state in which the mixed gas is injected in the radiation burner of the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
201 : 연소실 202 : 버너헤드201: combustion chamber 202: burner head
203 : 버너매트 204 : 점화 및 염검지수단203: burner mat 204: ignition and salt detection means
205 : 공기공급관 206 : 연료가스공급관205: air supply pipe 206: fuel gas supply pipe
207 : 가스혼합관 300 : 축소관부207: gas mixing pipe 300: reduced tube portion
상기와 같은 본 발명의 목적을 달성하기 위하여 혼합가스가 연소되는 연소실이 내측에 구비되어 있는 버너 헤드와, 그 버너 헤드의 상측에 연소가스의 연소시 발생되는 열에 의하여 가열되어 복사파를 방사하는 버너 매트와, 그 버너 매트를 통하여 분출되는 혼합가스를 점화함과 아울러 연소상태를 검지하는 점화 및 염검지수단 및 상기 버너 헤드의 일측에 연통되도록 연결되어 공기를 공급하기 위한 공기공급관과, 상기 공기공급관에 연통되도록 연결되어 연료가스를 공급하기 위한 연료가스공급관과, 그 연료가스공급관이 연결되는 공기공급관에 연장형성됨과 아울러 버너 헤드의 내부에 위치되어 공기와 연료가스를 혼합함과 아울러 분사하는 가스혼합관을 구비하여 구성되는 가스복사 조리기의 복사 버너에 있어서,In order to achieve the object of the present invention as described above, a burner head having a combustion chamber in which a mixed gas is combusted is provided inside, and a burner heated by heat generated when combustion gas is burned above the burner head to radiate radiation waves. A mat, an ignition and salt detecting means for igniting a mixed gas ejected through the burner mat and detecting a combustion state, and an air supply pipe connected to one side of the burner head to supply air, and the air supply pipe It is connected to communicate with the fuel gas supply pipe for supplying the fuel gas and the air supply pipe connected to the fuel gas supply pipe is formed in the interior of the burner head is mixed with the air and fuel gas, and the gas mixture to be injected In the radiation burner of the gas radiation cooker having a tube,
상기 가스혼합관에는 공기와 연료가스의 혼합가스가 충분히 혼합됨과 동시에 분사될 수 있도록 단면적이 축소된 축소관부를 형성한 것을 특징으로 하는 가스복사조리기용 복사버너의 가스혼합구조가 제공된다.The gas mixing tube is provided with a gas mixing structure of a radiation burner for a gas radiation cooker, characterized in that the reduction pipe portion is reduced in size so that the mixed gas of air and fuel gas is sufficiently mixed and injected.
이하, 상기와 같이 구성되는 본 발명의 가스복사조리기용 복사버너의 가스혼합구조를 첨부된 도면의 실시예를 참고하여 보다 상세히 설명하면 다음과 같다.Hereinafter, the gas mixing structure of the radiation burner for a gas radiation cooker of the present invention configured as described above will be described in detail with reference to an embodiment of the accompanying drawings.
도 1은 본 발명의 가스혼합구조가 구비된 가스복사조리기를 부분단면하여 보인 사시도이고, 도 2는 본 발명에 따른 복사버너를 보인 단면도이다.1 is a perspective view showing a partial cross-sectional view of the gas radiation cooker equipped with a gas mixing structure of the present invention, Figure 2 is a cross-sectional view showing a radiation burner according to the present invention.
도시된 바와 같이, 가스복사조리기는 상측이 개방되도록 소정의 내부공간을 가지는 외곽케이스(101)와, 그 외곽케이스(101)의 상측에 개방부에 복개되어 조리물을 얹어 놓을 수 있도록 설치되는 세라믹글래스(102)와, 그 세라믹글래스(102)의 하부에 배치되며 세라믹글래스(102)와의 사이에 배기통로(103)가 형성되도록 결합되는 버너하우징(104)과, 그 버너하우징(104)에 결합되며 혼합가스를 연소시켜서 복사파를 발생시키는 복사버너(105)와, 상기 배기통로(103)에 연통되도록 버너하우징(104)의 하측에 배치되어 배기가스를 백가드부(400)로 배출하기 위한 배기통(106)과, 그 배기통(106)과 버너하우징(104)이 고정되어 외곽케이스(101)의 내측에 안정적으로 안착될 수 있도록 외곽케이스(101)의 내부에 설치되는 받침대(107)로 구성되어 있다.As shown, the gas radiation cooker is an outer case 101 having a predetermined inner space so that the upper side is opened, and a ceramic which is installed on the upper side of the outer case 101 to be covered with an open portion to place food thereon. A burner housing 104 which is disposed under the glass 102 and the ceramic glass 102 and is coupled to form an exhaust passage 103 between the glass glass 102 and the ceramic glass 102, and is coupled to the burner housing 104. And a radiant burner 105 which burns a mixed gas to generate radiation waves, and is disposed under the burner housing 104 so as to be in communication with the exhaust passage 103 so as to discharge the exhaust gas to the back guard unit 400. And a pedestal 107 which is installed inside the outer case 101 so that the exhaust cylinder 106 and the burner housing 104 are fixed and stablely seated inside the outer case 101. have.
상기 복사버너(105)는 상기 버너하우징(104)의 장착구멍에 고정되며 연소실(201)이 형성되어 있는 버너헤드(202)와, 그 버너헤드(202)의 연소실(201) 상면에 복개되도록 결합되어 연소실(201)에서 혼합된 가스가 분출되면서 연소되어 복사파를 방사할 수 있도록 설치되는 복사체인 버너매트(203)와, 그 버너매트(203)의 측부에 설치되며 버너매트(203)를 통하여 분출되는 혼합가스를 점화시킴과 아울러 그 혼합가스의 연소상태를 검지하는 점화 및 염검지수단(204)과, 상기 버너 헤드(202)의 측면에 연소실(201)에 연통되도록 연결되어 공기를 공급하기 위한 공기공급관(205)과, 상기 공기공급관(205)에 연통되도록 연결되어 연료가스를 공급하기 위한 연료가스공급관(206)과, 그 연료가스공급관(206)이 연결되는 공기공급관(205)에 연장형성됨과 아울러 버너헤드(202)의 내부에 위치되어 공기와 연료가스를 혼합함과 아울러 분사하는 가스혼합관(207)과, 상기 공기공급관(205)의 후단부에는 모터(208)와 송풍팬(209)이 결합되어 있다.The radiation burner 105 is coupled to the burner head 202 fixed to the mounting hole of the burner housing 104 and to which the combustion chamber 201 is formed, and to the upper surface of the combustion chamber 201 of the burner head 202. And the burner mat 203 which is a radiating body which is installed so that the gas mixed in the combustion chamber 201 is ejected and combusted to radiate radiation waves, and is installed on the side of the burner mat 203 and through the burner mat 203. Ignition and salt detection means 204 for igniting the mixed gas ejected and detecting the combustion state of the mixed gas and the side of the burner head 202 connected to the combustion chamber 201 to supply air It is connected to the air supply pipe 205, the air supply pipe 205 is connected to the fuel gas supply pipe 206 for supplying fuel gas, and the air supply pipe 205 to which the fuel gas supply pipe 206 is connected And inside the burner head 202 A gas mixing tube 207 which is located and mixes and injects air and fuel gas, and a motor 208 and a blowing fan 209 are coupled to a rear end of the air supply tube 205.
그리고, 상기 가스혼합관(207)에는 공기공급관(205)을 통하여 공급되는 공기와 연료가스공급관(206)을 통하여 공급되는 연료가스가 압력차이에 의하여 급속이 흡입 및 혼합되어 분사될 수 있도록 단면이 축소되는 축소관부(300)가 형성되어 있다.In addition, the gas mixing pipe 207 has a cross section so that the air supplied through the air supply pipe 205 and the fuel gas supplied through the fuel gas supply pipe 206 can be rapidly sucked and mixed by the pressure difference and injected. The reduction pipe part 300 is reduced.
즉, 상기 축소관부(300)는 유속과 압력의 관계를 이용한 벤츄리관 형태로 제작한 것으로서, 축소관부(300)를 지날때 유체의 유속과 압력이 급속히 변화하는 원리를 이용한 것이다.That is, the reduction pipe part 300 is manufactured in the form of a venturi tube using the relationship between the flow rate and the pressure, and uses the principle that the flow velocity and pressure of the fluid change rapidly when the reduction pipe part 300 passes.
상기와 같이 구성되어 있는 본 발명의 가스복사조리기용 복사버너의 가스혼합구조의 작용효과를 설명하면 다음과 같다.Referring to the effect of the gas mixture structure of the radiation burner for a gas radiation cooker of the present invention configured as described above are as follows.
사용자가 세라믹글래스(102)의 상면에 조리물이 담겨진 조리용기를 얹어 놓고, 동작버튼을 작동시키면 모터(208)의 구동에 의하여 송풍팬(209)이 회전하며 공기가 공기공급관(205)을 통하여 가스혼합관(207)으로 공급되고, 이와 동시에 연료가스도 연료가스공급관(206)을 통하여 가스혼합관(207)으로 공급되는데, 그와 같이 공급된 연료가스와 공기는 가스혼합관(207)에서 혼합됨과 아울러 버너헤드(202)의내측 연소실(201)로 분사되고, 그 분사된 혼합가스가 버너매트(203)를 통하여 분출되어지며, 그때 점화 및 염검지수단(204)에서 발생되는 점화불꽃에 의하여 점화 및 연소가 이루어진다.When the user places a cooking vessel containing food on the upper surface of the ceramic glass 102 and operates the operation button, the blowing fan 209 is rotated by the driving of the motor 208 and the air is supplied through the air supply pipe 205. It is supplied to the gas mixing pipe 207, and at the same time the fuel gas is also supplied to the gas mixing pipe 207 through the fuel gas supply pipe 206, the fuel gas and air supplied in such a way that the gas mixing pipe 207 In addition to the mixture, it is injected into the inner combustion chamber 201 of the burner head 202, and the injected mixed gas is ejected through the burner mat 203, and then to the ignition flame generated by the ignition and salt detection means 204. By means of ignition and combustion.
그리고 상기와 같이 혼합가스의 연소에 의하여 버너매트(203)가 가열되어지는데, 그 가열되는 버너매트(203)에서 복사파가 방사되고, 그 방사되는 복사파는 세라믹글래스(102)를 투과하면서 조리용기를 가열하여 조리용기에 담겨진 조리물을 조리하게 된다.And the burner mat 203 is heated by the combustion of the mixed gas as described above, the radiation is radiated from the burner mat 203 is heated, the radiated radiation is transmitted to the ceramic glass 102 cooking vessel Heating to cook the food contained in the cooking vessel.
또한, 상기와 같이 버너매트(203)를 가열하면서 연소되는 연소가스는 상기 버너하우징(104)와 세라믹글래스(102) 사이에 형성되어 있는 배기통로(103)를 통하여 백가드부(400)쪽으로 배출되어 지고, 배기통(106)에 연통되도록 설치된 버너하우징(104)에서 배출되는 연소가스는 배기통(106)을 통하여 백가드부(400)쪽으로 배출되어 진다.In addition, the combustion gas that is burned while heating the burner mat 203 as described above is discharged toward the back guard unit 400 through the exhaust passage 103 formed between the burner housing 104 and the ceramic glass 102. The combustion gas discharged from the burner housing 104 installed to communicate with the exhaust cylinder 106 is discharged toward the back guard part 400 through the exhaust cylinder 106.
한편, 상기와 같이 복사버너(105)에서 연소가 이루어질때에 공기공급관(205)으로 공급된 공기와 연료가스공급관(206)으로 공급된 연료가스는 가스혼합관(207)의 입구부에서 일부가 혼합되어지고, 그와 같이 일부 혼합이 이루어진 혼합가스는 단면적인 축소된 축소관부(300)를 지나며 압력과 유속이 증가함과 동시에 유동이 되며 완전히 혼합이 이루어진 후에 도 3에서 점선으로 표시된 것과 같이 연소실(201)로 분사되어 진다. 따라서, 그와 같이 충분히 혼합된 혼합가스가 연소실(201)로 분사되므로 연소율이 획기적으로 향상되어지고, 그와 같은 연소율의 향상에 따라 버너매트(203)의 복사강도가 증대되어 복사효율을 향상시키게 된다.On the other hand, the air supplied to the air supply pipe 205 and the fuel gas supplied to the fuel gas supply pipe 206 when the combustion is made in the radiation burner 105 as described above is partially at the inlet of the gas mixing pipe 207. The mixed gas, which is mixed and partially mixed, passes through the reduced tube section 300 having a cross-sectional area and flows at the same time as the pressure and flow rate are increased, and after the mixing is completed, the combustion chamber as indicated by the dotted line in FIG. 3. Sprayed to 201. Therefore, the combustion gas is drastically improved because such a sufficiently mixed gas is injected into the combustion chamber 201, and the radiation intensity of the burner mat 203 is increased in accordance with the improvement of the combustion rate to improve the radiation efficiency. do.
이상에서 상세히 설명한 바와 같이, 본 발명 가스복사조리기용 복사버너의 가스혼합구조는 버너헤드의 내측에 위치하는 가스혼합관에 혼합가스의 유속과 압력을 증가시키기 위하여 단면적이 축소되는 축소관부를 형성하여, 공기공급관을 통하여 공급된 공기와 연료가스공급관을 통하여 공급된 연료가스가 가스혼합관의 입구부에서 일부혼합이 이루어진후, 그 혼합가스가 축소관부를 지나며 유속과 압력이 증가되며 유동이 되며 충분히 혼합되어 연소실로 분사되도록 함으로써, 완전연소에 가까운 연소가 이루어져서 연소율을 획기적으로 증대시키고, 그에따라 버너매트의 복사강도가 증가되는데 따른 복사효율을 향상시키는 효과가 있다.As described in detail above, the gas mixing structure of the radiation burner for a gas radiation cooker of the present invention forms a reduction pipe portion whose cross-sectional area is reduced in order to increase the flow velocity and pressure of the mixed gas in the gas mixing pipe located inside the burner head. After the air supplied through the air supply pipe and the fuel gas supplied through the fuel gas supply pipe are partially mixed at the inlet of the gas mixing pipe, the mixed gas passes through the reduction pipe section, and the flow rate and pressure are increased and flowed. By being mixed and injected into the combustion chamber, combustion close to complete combustion is achieved, which greatly increases the combustion rate, thereby improving the radiation efficiency according to the increase in the radiant strength of the burner mat.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020012508A KR20030073114A (en) | 2002-03-08 | 2002-03-08 | Structure for mixing gas of burner in gas radiation oven range |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020012508A KR20030073114A (en) | 2002-03-08 | 2002-03-08 | Structure for mixing gas of burner in gas radiation oven range |
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| Publication Number | Publication Date |
|---|---|
| KR20030073114A true KR20030073114A (en) | 2003-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020020012508A KR20030073114A (en) | 2002-03-08 | 2002-03-08 | Structure for mixing gas of burner in gas radiation oven range |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR880000994Y1 (en) * | 1985-08-22 | 1988-03-17 | 장영기 | A eraser |
| JPH0669699U (en) * | 1993-02-26 | 1994-09-30 | 住友金属鉱山株式会社 | Concentration burner for self-smelting |
| KR950009403U (en) * | 1993-09-08 | 1995-04-19 | Oven Burner Structure of Gas Oven Range | |
| KR970043878U (en) * | 1995-12-28 | 1997-07-31 | Combustion device of gas stove |
-
2002
- 2002-03-08 KR KR1020020012508A patent/KR20030073114A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR880000994Y1 (en) * | 1985-08-22 | 1988-03-17 | 장영기 | A eraser |
| JPH0669699U (en) * | 1993-02-26 | 1994-09-30 | 住友金属鉱山株式会社 | Concentration burner for self-smelting |
| KR950009403U (en) * | 1993-09-08 | 1995-04-19 | Oven Burner Structure of Gas Oven Range | |
| KR970043878U (en) * | 1995-12-28 | 1997-07-31 | Combustion device of gas stove |
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