KR200276857Y1 - Uniform Heat Storage Device for Heat Storage of Regenerative Burner - Google Patents
Uniform Heat Storage Device for Heat Storage of Regenerative Burner Download PDFInfo
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- KR200276857Y1 KR200276857Y1 KR2019980025476U KR19980025476U KR200276857Y1 KR 200276857 Y1 KR200276857 Y1 KR 200276857Y1 KR 2019980025476 U KR2019980025476 U KR 2019980025476U KR 19980025476 U KR19980025476 U KR 19980025476U KR 200276857 Y1 KR200276857 Y1 KR 200276857Y1
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- combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
- F27D17/12—Arrangements for using waste heat using heat storage
- F27D17/13—Arrangements for using waste heat using heat storage using regenerative heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
- F27D2099/0053—Burner fed with preheated gases
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
본 고안은 연소가스의 현열을 축열기에 축열할 때 상·하부에 설치된 축열기로 동일한 양의 배기가스를 공급시켜 축열기의 축열온도를 균일하게 유지할 수 있는 축열식 버너용 균등축열장치에 관한 것으로서, 연소로의 양측에 연소부를 설치하여 일측은 연소모드로 설정하고 타측은 배기모드로 설정하여 배기가스에 포함된 현열을 축열기로 축열하는 축열식 버너에 있어서, 상기 연소로의 배기가스를 배출시키기 위하여 연소로의 양측에 설치된 연소부와 연소부의 사이 및 연소부와 연소부의 사이에 각각 형성된 배기공과, 상기 각 배기공을 통하여 배기되는 배기가스가 양분되도록 출측이 분기된 분기관과, 상기 각 분기관의 단부와 연소부 및 축열기에 설치되어 연소모드 및 배기모드에 따라 연소공기 및 배기가스의 이동경로를 절환하는 배기가스 절환밸브를 포함하여 이루어진 것이다.The present invention relates to a uniform heat storage device for a regenerative burner that can maintain the heat storage temperature of the heat storage device evenly by supplying the same amount of exhaust gas to the heat storage devices installed in the upper and lower parts when the sensible heat of combustion gas is stored in the heat storage device. In the regenerative burner for regulating the sensible heat contained in the exhaust gas with a regenerator, a combustion unit is installed on both sides of the combustion furnace, one side is set in the combustion mode and the other side is set in the exhaust mode, thereby discharging the exhaust gas of the combustion furnace. Exhaust pipes respectively formed between the combustion section and the combustion section provided on both sides of the combustion furnace, and between the combustion section and the combustion section, branch pipes having branched outlets so as to divide the exhaust gas exhausted through the respective exhaust holes; Exhaust gas installed at the end of the engine and in the combustion section and the heat storage device to switch the movement path of combustion air and exhaust gas according to combustion mode and exhaust mode It has been made, including a ring valve.
Description
본 고안은 연소가스의 현열을 축열기에 축열할 때 상·하부에 설치된 축열기로 동일한 양의 배기가스를 공급시켜 축열기의 축열온도를 균일하게 유지할 수 있는 축열식 버너용 균등축열장치에 관한 것이다.The present invention relates to a uniform heat storage device for a regenerative burner that can maintain the heat storage temperature of the heat storage device evenly by supplying the same amount of exhaust gas to the heat storage devices installed in the upper and lower parts when the sensible heat of the combustion gas is stored in the heat storage device. .
일반적으로 가열로 및 기타 공업로에는 연소가스에 포함된 폐열을 회수하여 연소공기의 온도를 상승시키는 축열식 버너가 널리 사용되고 있는바, 상기 축열식 버너는 도 1에 도시된 바와같이 연소로(1)의 내부에는 피가열물(A)을 지지하기 위한 스키드(2)가 설치되어 있고 상기 연소로(1)의 양측에는 연소부(3a)(3b)(3c)(3d)가 각각 설치되어 있으며 상기 각 연소부(3a)(3b)(3c)(3d)가 설치된 상부에는 연료가 공급되는 연료노즐(4a)(4b)(4c)(4d)이 설치되어 있다.In general, regenerative burners for recovering the waste heat contained in the combustion gas to increase the temperature of the combustion air are used in heating furnaces and other industrial furnaces, and the regenerative burners are shown in FIG. Skids 2 for supporting the heated object A are provided therein, and combustion parts 3a, 3b, 3c, and 3d are provided on both sides of the combustion furnace 1, respectively. The fuel nozzles 4a, 4b, 4c and 4d to which fuel is supplied are provided in the upper part where the combustion parts 3a, 3b, 3c, and 3d are provided.
그리고 상기 각 연소부(3a)(3b)(3c)(3d)의 단부에는 배기가스에 포함된 잠열을 축열하는 축열기(5a)(5b)(5c)(5d)가 설치되어 있고 각 축열기(5a)(5b)(5c)(5d)의 끝단에는 연결관(6)(6a)이 설치되어 있으며 상기 연결관(6)(6a)은 사방으로 절환되어 연소공기와 배가가스의 이동경로를 변경하는 절환밸브(7)와 각각 연결되어 있다.At the ends of each of the combustion sections 3a, 3b, 3c, and 3d, there are heat accumulators 5a, 5b, 5c, and 5d that accumulate latent heat contained in the exhaust gas. (5a) (5b) (5c) (5d) are provided with connecting pipes (6) and (6a) at the ends, and the connecting pipes (6) and (6a) are switched in all directions to move the paths of combustion air and exhaust gas. It is connected to the switching valve 7 to change, respectively.
한편 상기 절환밸브(7)에는 외부의 연소공기를 흡입하는 흡입관(8a)과 배기가스를 외부로 배출시키는 배기관(8)이 설치되어 있고 상기 흡입관(8a)과 배기관(8)에는 연소공기 및 배기가스를 강제 순환시키기 위한 흡입팬(9a) 및 배기팬(9)이 각각 설치되어 있다.On the other hand, the switching valve 7 is provided with a suction pipe 8a for sucking external combustion air and an exhaust pipe 8 for discharging the exhaust gas to the outside, and the combustion air and exhaust pipes are provided in the suction pipe 8a and the exhaust pipe 8. A suction fan 9a and an exhaust fan 9 for forcibly circulating gas are provided, respectively.
따라서 연소로(1)의 내부에 설치된 스키드(2) 상부에 피가열물(A)을 안착시킨 후 연료노즐(4a)(4b)에 설치된 밸브를 개방시키고 연료노즐(4c)(4d)에 설치된 밸브를 폐쇄시켜 연소부(3a)(3b)측으로만 연료가 공급되도록 하고 흡입팬(9a)을 작동시키면 상기 흡입팬(9a)으로 흡입된 연소공기는 절환밸브(7)를 통해서 축열기(5a)(5b)를 지나면서 열교환을 하여 온도가 상승된 상태로 상기 연소부(3a)(3b)를 통하여 연소로(1)의 내부로 공급되어 연료노즐(4a)(4b)로 공급되는 연료와 혼합된다.Therefore, after the heated object A is seated on the upper part of the skid 2 installed in the combustion furnace 1, the valves installed at the fuel nozzles 4a and 4b are opened, and the fuel nozzles 4c and 4d are installed. When the valve is closed to supply fuel only to the combustion parts 3a and 3b and the suction fan 9a is operated, the combustion air sucked into the suction fan 9a is transferred to the heat storage 5a through the switching valve 7. And fuel supplied to the fuel nozzles 4a and 4b through the combustion parts 3a and 3b and being supplied to the fuel nozzles 4a and 4b in a state where the temperature is increased by heat exchange through the 5b. Are mixed.
이때 연소부(3a)(3b)에 장착된 점화장치(도면 미도시)가 작동되면 공기와 혼합된 연료가 점화되어 연소로(1) 내부에서 연소되며 이때 발생된 고온(1000℃ 이상)의 연소가스는 스키드(2)의 상부에 안착된 피가열물(A)을 가열시킨 후 타측의 연소부(3c)(3d)를 통하여 이의 단부에 각각 설치된 축열기(5c)(5d)에서 열교환을 하여 축열기(5c)(5d)의 온도를 상승시키고, 상기 축열기(5c)(5d)에 설치된 연결관(6a)으로 배출되는 저온(200℃ 이하)의 배기가스는 배기관(8)에 설치된 배기팬(9)에 의해서 강제순환되어 외부로 배출된다.At this time, when an ignition device (not shown) mounted on the combustion parts 3a and 3b is operated, fuel mixed with air is ignited and burned in the combustion furnace 1, and combustion of high temperature (over 1000 ° C) generated at this time is performed. The gas is heated by heating the heated object A seated on the upper part of the skid (2), and then heat-exchanged in the regenerators (5c) (5d) respectively installed at its end through the other combustion section (3c) (3d) The temperature of the heat accumulators 5c and 5d is increased, and the low temperature (200 ° C. or less) exhaust gas discharged to the connecting pipe 6a provided in the heat accumulators 5c and 5d is exhausted in the exhaust pipe 8. It is forcedly circulated by the fan 9 and discharged to the outside.
이와같이 연소부(3a)(3b)를 연소모드로 하여 연속적으로 동작시키면 이의 단부에 설치된 축열기(5a)(5b)의 온도가 점차 하강하게 되며 상기 축열기(5a)(5b)의 온도가 일정온도 이하로 낮아지면 연료노즐(4a)(4b)에 설치된 밸브를 폐쇄시키고 연료노즐(4c)(4d)에 설치된 밸브를 개방시키며 절환밸브(7)를 절환하여 연소부(3c)(3d)를 작동시켜 발생되는 배기가스를 연소부(3a)(3b)측으로 배출시키면서 온도가 낮아진 축열기(5a)(5b)의 온도를 상승시키며 이러한 과정을 반복하면서 피가열물(A)을 가열하게 된다.In this way, when the combustion sections 3a and 3b are operated continuously in the combustion mode, the temperature of the heat accumulators 5a and 5b provided at their ends gradually decreases, and the temperature of the heat accumulators 5a and 5b is constant. When the temperature is lower than the temperature, the valves installed in the fuel nozzles 4a and 4b are closed, the valves installed in the fuel nozzles 4c and 4d are opened, and the switching valve 7 is switched to open the combustion section 3c and 3d. The exhaust gas generated by the operation is discharged to the combustion parts 3a and 3b, while the temperature of the heat accumulators 5a and 5b is lowered, and the heated object A is heated while repeating this process.
그러나 연소로(1) 내부의 배기가스는 상부가 하부보다 온도가 높게되므로 배기모드로 설정된 연소부(3c)로 유입되는 배기가스의 온도가 연소부(3d)로 유입되는 배기가스의 온도보다 높게되어 상기 연소부(3c)에 내장된 축열기(5c)의 온도가 연소부(3d)에 내장된 축열기(5d)의 온도보다 상승된다.However, since the upper part of the exhaust gas inside the combustion furnace 1 has a higher temperature than the lower part, the temperature of the exhaust gas flowing into the combustion section 3c set to the exhaust mode is higher than the temperature of the exhaust gas flowing into the combustion section 3d. Thus, the temperature of the heat accumulator 5c built in the combustion section 3c rises above the temperature of the heat accumulator 5d built in the combustion section 3d.
따라서 일정시간이 경과한 후 연소모드와 배기모드를 절환하여 버너를 작동시키면 연소부(3c)로 공급되는 연소공기에 비하여 연소부(3d)로 공급되는 연소공기의 온도가 낮게 되므로 동일한 연료량으로 연소시킬 때 상·하부의 연소온도가 다르게 되어 피가열물(1a)의 균일한 가열이 불가능하게 되는 문제점이 있었다.Therefore, if the burner is operated by switching the combustion mode and the exhaust mode after a predetermined time has elapsed, the temperature of the combustion air supplied to the combustion section 3d is lower than that of the combustion air supplied to the combustion section 3c. When the upper and lower combustion temperatures are different, the uniform heating of the heated object 1a is impossible.
본 고안은 상기한 문제점을 해결하기 위하여 고안한 것으로서, 배기모드로 설정된 연소부로 배출되는 배기가스의 경로를 동일하게 유지하여 축열기를 균일한 온도로 축열할 수 있는 축열식 버너용 균등축열장치를 제공하는데 그 목적이 있다.The present invention has been devised to solve the above problems, and provides an equal heat storage device for a heat storage burner that can accumulate the heat accumulator at a uniform temperature by maintaining the same path of the exhaust gas discharged to the combustion unit set in the exhaust mode. Its purpose is to.
상기 목적을 달성하기위한 본 고안은 연소로의 양측에 연소부를 설치하여 일측은 연소모드로 설정하고 타측은 배기모드로 설정하여 배기가스에 포함된 잠열을 축열기로 축열하는 축열식 버너에 있어서, 상기 연소로의 배기가스를 배출시키기 위하여 연소로의 양측에 설치된 연소부와 연소부의 사이 및 연소부와 연소부의 사이에 각각 형성된 배기공과, 상기 각 배기공을 통하여 배기되는 배기가스가 양분되도록 출측이 분기된 분기관과, 상기 각 분기관의 단부와 연소부 및 축열기에 설치되어 연소모드 및 배기모드에 따라 연소공기 및 배기가스의 이동경로를 절환하는 배기가스 절환밸브를 포함하여 이루어진 것이다.The present invention for achieving the above object is in the regenerative burner to install the combustion parts on both sides of the combustion furnace to set one side in the combustion mode and the other side in the exhaust mode to accumulate the latent heat contained in the exhaust gas to the heat storage. In order to discharge the exhaust gas from the combustion furnace, the outlet branch is divided so that the exhaust hole formed between the combustion unit and the combustion unit provided on both sides of the combustion furnace, and between the combustion unit and the combustion unit, and the exhaust gas exhausted through the respective exhaust holes are divided. And an exhaust gas switching valve installed at the end of each branch pipe, the combustion section and the heat storage device, and switching the moving paths of the combustion air and the exhaust gas according to the combustion mode and the exhaust mode.
도 1은 일반적인 축열식 버너를 도시한 개략도,1 is a schematic view showing a typical regenerative burner,
도 2는 본 고안에 따른 균등축열장치가 설치된 축열식 버너를 도시한 개략도,Figure 2 is a schematic diagram showing a regenerative burner installed with an equal heat storage device according to the present invention,
도 3a 및 도 3b는 본 고안에 따른 균등축열장치가 설치된 축열기 버너의 동작을 설명하기위한 개략도.3a and 3b is a schematic view for explaining the operation of the heat accumulator burner is installed the equal heat storage device according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
A : 피가열물A: heated object
1 : 연소로1: combustion furnace
3a, 3b, 3c, 3d : 연소부3a, 3b, 3c, 3d: combustion section
4a, 4b, 4c, 4d : 연료노즐4a, 4b, 4c, 4d: fuel nozzle
5a : 5b, 5c, 5d : 축열기5a: 5b, 5c, 5d: heat storage
6, 6a : 연결관6, 6a: connector
10, 10a : 배기공10, 10a: exhaust hole
30, 30a : 분기관30, 30a: branch pipe
20a, 20b, 20c, 20d : 배기가스 절환밸브20a, 20b, 20c, 20d: exhaust gas switching valve
이하 본 고안을 도시한 첨부도면 도 2를 참조하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings showing the present invention in detail as follows.
도 2는 본 고안에 따른 균등축열장치가 설치된 축열식 버너를 도시한 개략도로서, 종래와 동일한 부분은 그 설명을 생략하고 동일부호를 부여하기로 한다.Figure 2 is a schematic diagram showing a regenerative burner installed with an equal heat storage device according to the present invention, the same parts as in the prior art will be omitted and the same reference numerals will be given.
본 고안은 연소로(1)의 양측에 설치된 연소부(3a)와 연소부(3b)의 사이 및 연소부(3c)와 연소부(3d)의 사이에 배기가스를 배기시키기 위한 배기공(10)(10a)이 각각 형성되어 있고 상기 각 배기공(10)(10a)에는 배기가스 절환밸브(20a)(20b)(20c)(20d)에 연결되는 분기관(30)(30a)이 각각 설치되어 있다.The present invention provides an exhaust hole 10 for exhausting the exhaust gas between the combustion section 3a and the combustion section 3b provided on both sides of the combustion furnace 1, and between the combustion section 3c and the combustion section 3d. 10a are formed respectively, and branch pipes 30 and 30a connected to the exhaust gas switching valves 20a, 20b, 20c, and 20d are respectively installed in the exhaust holes 10 and 10a, respectively. It is.
한편 상기 배기가스 절환밸브(20a)에는 연소부(3a)와 축열기(5a)가 연결되어 있고 배기가스 절환밸브(20b)에는 연소부(3b)와 축열기(5b)가 연결되어 있으며 배가가스 절환밸브(20c)에는 연소부(3c)와 축열기(5c)가 연결되어 있고 배기가스 절환밸브(20d)에는 연소부(3d)와 축열기(5d)가 연결되어 있다.On the other hand, the exhaust gas switching valve (20a) is connected to the combustion section (3a) and the regenerator (5a), the exhaust gas switching valve (20b) is connected to the combustion section (3b) and the regenerator (5b), the exhaust gas A combustion section 3c and a heat storage 5c are connected to the switching valve 20c, and a combustion section 3d and a heat storage 5d are connected to the exhaust gas switching valve 20d.
이와같이 구성된 본 고안은 연소모드로 설정되어 작동될 때 연소로(1)의 내부로 공급되는 연소공기는 각 연소부(3a)(3b) 또는 연소부(3c)(3d)를 통하여 공급되고 배기모드로 설정되어 작동될 때 연소로(1)에서 배기되는 배기가스는 배기공(10)또는 배기공(10a)을 통하여 배기된다.According to the present invention configured as described above, the combustion air supplied into the combustion furnace 1 when it is set and operated in the combustion mode is supplied through each combustion section 3a, 3b or the combustion section 3c, 3d and the exhaust mode. The exhaust gas exhausted from the combustion furnace 1 when exhausted from the combustion furnace 1 is exhausted through the exhaust hole 10 or the exhaust hole 10a.
즉 도 3a에 도시된 바와같이 연소모드로 작동될 때에는 연결관(6)을 통하여 공급되는 연소공기는 축열기(5a)(5b)를 지나면서 온도가 상승된 상태로 연소부(3a)(3b)를 통하여 연소로(1)의 내부로 공급되어 연료노즐(4a)(4b)에서 분사되는 연료과 혼합되어 점화장치에 의해서 점화되므로 연소로(1)의 내부에 안착된 피가열물(A)을 가열시키게 된다.That is, when operating in the combustion mode as shown in Fig. 3a, the combustion air supplied through the connecting pipe 6 passes through the heat accumulators 5a and 5b, and the temperature of the combustion air is increased. Is heated to the inside of the combustion furnace 1 and mixed with the fuel injected from the fuel nozzles 4a and 4b, and then ignited by the ignition device. Heated.
이때 피가열물(A)을 가열시키는 화염은 연료노즐(4a)(4b)을 통하여 분사되는 연료의 양을 조절하면 크기의 조절이 가능하게 되므로 피가열물(A)을 균일하게 가열할 수 있게 된다.At this time, the flame that heats the heated object A can be adjusted in size by adjusting the amount of fuel injected through the fuel nozzles 4a and 4b so that the heated object A can be uniformly heated. do.
한편 도 3b에 도시된 바와같이 배기모드로 작동될 때에는 축열기(5a)(5b)와 연결되는 배기가스 절환밸브(20a)(20b)를 절환하면 연소로(1)에서 배기되는 배기가스는 연소부(3a)(3b)측으로 유입되지 못하고 이들의 사이에 형성된 배기공(10)을 통하여 배출되며 배출된 배기가스는 분기관(30)에서 양분되어 동일한 온도의 배기가스는 배기가스 절환밸브(20a)(20b)를 통하여 축열기(5a)(5b)로 이동하게 되고 상기 각 축열기(5a)(5b)를 축열하게 되므로 축열기(5a)(5b)의 온도는 균일하게 유지된다.On the other hand, when operating in the exhaust mode as shown in FIG. 3b, when the exhaust gas switching valves 20a and 20b connected to the heat accumulators 5a and 5b are switched, the exhaust gas exhausted from the combustion furnace 1 is burned. The exhaust gas is discharged through the exhaust hole 10 formed between the portions 3a and 3b and the exhaust gas is bisected in the branch pipe 30 so that the exhaust gas at the same temperature is the exhaust gas switching valve 20a. It is moved to the heat accumulators (5a) and (5b) through the (20b) and each of the heat accumulators (5a) (5b) is thermally stored, so that the temperature of the heat accumulators (5a) (5b) is kept uniform.
상기 도 3a 및 도 3b에서와 같이 연소로(1)의 일측에 설치된 연소부(3a)(3b)와 타측에 설치된 연소부(3c)(3d)는 동일한 동작으로 작동되는 것이며 상기 연소부(3a)(3b)가 연소모드로 동작되면 타측의 연소부(3c)(3d)는 배기모드로 동작하며 상기 연소부(3a)(3b)가 배기모드로 동작되면 타측의 연소부(3c)(3d)는 연소모드로 동작되는 과정을 반복하는 것이다.As shown in FIGS. 3A and 3B, the combustion unit 3a and 3b installed on one side of the combustion furnace 1 and the combustion unit 3c and 3d installed on the other side operate in the same operation, and the combustion unit 3a 3b is operated in the combustion mode, the other combustion unit 3c, 3d is operated in the exhaust mode, and when the combustion units 3a, 3b are operated in the exhaust mode, the other combustion unit 3c, 3d is operated. ) Repeats the process of operating in combustion mode.
이상에서와 같이 본 고안은 온도가 동일한 배기가스를 상·하부 축열기로 균일하게 분배하여 각 축열기의 온도를 균일하게 상승시킬수 있게 되므로 연소공기의 온도편차를 방지하게 되므로 축열식 버너의 효율을 향상시킬 수 있게되는 매우 유용한 고안이다.As described above, the present invention evenly distributes the exhaust gas having the same temperature to the upper and lower heat accumulators to increase the temperature of each heat accumulator uniformly, thereby preventing the temperature deviation of the combustion air, thereby improving the efficiency of the regenerative burner. It's a very useful design that makes it possible.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019980025476U KR200276857Y1 (en) | 1998-12-18 | 1998-12-18 | Uniform Heat Storage Device for Heat Storage of Regenerative Burner |
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| Application Number | Priority Date | Filing Date | Title |
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| KR2019980025476U KR200276857Y1 (en) | 1998-12-18 | 1998-12-18 | Uniform Heat Storage Device for Heat Storage of Regenerative Burner |
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| Publication Number | Publication Date |
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| KR200276857Y1 true KR200276857Y1 (en) | 2002-07-18 |
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