KR200311752Y1 - Apparatus for recovering heat of waste gas from gas boiler - Google Patents

Apparatus for recovering heat of waste gas from gas boiler Download PDF

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Publication number
KR200311752Y1
KR200311752Y1 KR20-2003-0001440U KR20030001440U KR200311752Y1 KR 200311752 Y1 KR200311752 Y1 KR 200311752Y1 KR 20030001440 U KR20030001440 U KR 20030001440U KR 200311752 Y1 KR200311752 Y1 KR 200311752Y1
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KR
South Korea
Prior art keywords
gas
boiler
pipe
heat
heat exchanger
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KR20-2003-0001440U
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Korean (ko)
Inventor
박종훈
Original Assignee
주식회사 아이엠코리아가스보일러
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Priority to KR20-2003-0001440U priority Critical patent/KR200311752Y1/en
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Publication of KR200311752Y1 publication Critical patent/KR200311752Y1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0024—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for combustion apparatus, e.g. for boilers

Abstract

본 고안은 가스보일러에서 가스가 연소되어 주 열교환기를 가열시킨 후 배출구를 통해 버려지는 180∼200℃ 온도의 배기가스 폐열을 회수하고져 가스보일러의 가스배출구에 중앙 내부의 가스유통로가 연관되게 내,외 이중벽이 자바라주벽으로 굴곡된 원통형 히트파이프와 그 외주는 물집 외통체로 형성된 급수 예열통을 부설시키고 물집 외통체에는 일편 하부단의 유입구에 난방 환수관을, 타편 상부단의 유출구에 보일러의 환수관을 각각 연결시켜서 버어너 연소실에서 연소되어 주 열교환기를 가열시킨후 배출되는 배기가스가 가스배출구에 부설된 급수예열통의 중앙 내부 가스유통로로 통과하면서 원통형 히트파이프로 배기가스의 폐열이 급속히 전도되어 그 외주의 물집 원통체의 물을 가열시켜 가스보일러 내부의 주 열교환기로 다시 공급시키므로서 열효율을 상승시키고 2차교환시 보조 열교환기에 발생할 수 있는 결로현상을 방지한 가스보일러의 배기가스 폐열 회수장치The present invention recovers the waste heat of 180 ~ 200 ℃ temperature that is discarded through the exhaust port after the gas is burned in the gas boiler to heat the main heat exchanger, so that the gas flow path of the center inside the gas outlet of the gas boiler, A cylindrical heat pipe whose outer double wall is bent into a bellows wall and its outer periphery are provided with a water preheating tube formed of a blister outer cylinder.The blister outer cylinder has a heating return pipe at the inlet of one lower end, and a boiler return pipe at the outlet of the other upper end. The exhaust heat of the exhaust gas is rapidly conducted by the cylindrical heat pipe while the exhaust gas discharged after burning in the burner combustion chamber and heating the main heat exchanger passes through the internal gas flow path of the feedwater preheating tank installed at the gas outlet. The water in the outer blister cylinder is heated and supplied again to the main heat exchanger inside the gas boiler. Exhaust gas waste heat recovery system of a gas boiler that increases the thermal efficiency and prevents condensation which may occur in the secondary heat exchanger during the second exchange

Description

가스보일러의 배기가스 폐열 회수장치 {Apparatus for recovering heat of waste gas from gas boiler}Apparatus for recovering heat of waste gas from gas boiler}

본 고안은 가스보일러에서 연소되어 내부의 주 열교환기를 가열하고 배출되는 배기가스의 폐열을 이용하여 난방후 환수되는 물을 가열시키는 가스보일러의 배기가스 폐열 회수장치에 관한 것이다.The present invention relates to an exhaust gas waste heat recovery apparatus of a gas boiler which burns in a gas boiler to heat the main heat exchanger therein and heats water to be returned after heating by using waste heat of exhaust gas discharged.

종래에도 가스보일러의 연소열로 주 열교환기를 가열시킨 후 배출되는 배기가스의 폐열을 이용하고져 연소열이 발산되어 주 열교환기를 가열시키고 배출되는 방향의 내부공간에 보조 열교환기를 부설시켜 배출되는 배기가스의 폐열을 이용하여 보조 열교환기를 가열하는 방법이 있었으나 난방 후 환수되는 물이 유통하는 보조 열교환기에 180∼200℃ 온도의 배기가스 폐열이 직접 접촉하므로서 온도의 급격한 차이로 인하여 보조 열교환기에 결로현상이 발생하여 다량의 물방울이 생성되어 보일러의 연소굴뚝이 막히고 물기로 인한 부식으로 보일러의 수명이 단축되는 원인이 되었다.Conventionally, the waste heat of the exhaust gas discharged by heating the main heat exchanger with the combustion heat of the gas boiler and using the waste heat of the exhaust gas discharged to heat the main heat exchanger and installing the auxiliary heat exchanger in the inner space of the discharged direction. Although there was a method of heating the auxiliary heat exchanger by using the exhaust gas waste heat of 180-200 ° C in direct contact with the auxiliary heat exchanger in which the water returned after heating is heated, condensation occurs in the auxiliary heat exchanger due to the sudden difference in temperature. Water droplets were generated to block the combustion chimney of the boiler and cause corrosion of the boiler to shorten the life of the boiler.

본 고안에서는 이와같은 폐단을 개선하기 위하여 가스관으로 공급되는 가스를 팬에 의해 버어너 연소실에서 연소하여 주 열교환기를 가열시켜 주는 가스보일러의 가스배출구에 중앙 내부의 가스유통로가 연관되게 내,외 이중벽이 자바라주벽으로 굴곡된 원통형 히트파이프와 그 외주는 물집 외통체로 형성된 급수 예열통을부설시키고 물집 외통체에는 일편 하부단의 유입구에 난방 환수관을, 타편 상부단의 유출구에 보일러 환수관을 각각 연결시켜서 버어너 연소실에서 연소되어 가스보일러 내부의 주 열교환기를 가열시킨후 180∼200℃ 온도로 가스배출구로 배출되는 배기가스가 가스배출구에 부설된 급수예열통의 중앙 내부 가스유통로로 통과하면서 원통형 히트파이프로 배기가스의 폐열이 급속히 전도되어 그 외주의 물집 원통체의 물을 가열시켜 가스보일러 내부의 주 열교환기로 다시 공급시키므로서 열효율을 상승시키고 결로현상을 방지한 것으로 도면에 의거 상세히 설명하면 다음과 같다.In the present invention, the inner and outer double walls are connected to the gas outlet of the gas boiler which burns the gas supplied to the gas pipe in the burner combustion chamber by the fan to heat the main heat exchanger to improve the closed end. The cylindrical heat pipe bent by the bellows wall and its outer periphery are provided with a water supply preheating tube formed of a blister outer cylinder, and a heating return tube is connected to the inlet of one lower end and a boiler return tube is connected to the outlet of the other upper end. The main heat exchanger inside the gas boiler after being burned in the burner combustion chamber, and the exhaust gas discharged to the gas outlet at a temperature of 180 to 200 ° C passes through the central gas passage of the feedwater preheater installed at the gas outlet. When the waste heat of exhaust gas is conducted rapidly through the pipe, it heats the water of the blister cylinder of the outer circumference. When standing the thermal efficiency rises because again supplied to the main heat exchange gas inside the boiler was described in detail based on the drawings that prevent condensation as follows.

도 1은 본 고안의 사용상태를 보인 가스보일러 전체 구성도1 is an overall configuration diagram of a gas boiler showing a state of use of the present invention

도 2는 본 고안의 구성을 보인 부분 확대단면도Figure 2 is a partial enlarged cross-sectional view showing the configuration of the present invention

도 3a,b는 원통체 히트파이프의 열접촉 면적을 극대화 하기 위하여 내,외 이중벽에 링형박판 또는 길이가 긴 박판을 부착시킨 구성을 보인 단면도Figure 3a, b is a cross-sectional view showing a configuration in which a ring-shaped thin plate or a long thin plate attached to the inner and outer double wall in order to maximize the thermal contact area of the cylindrical heat pipe

도면의 중요부분에 대한 부호의 설명Explanation of symbols for important parts of the drawings

1 : 버어너 연소실 2 : 팬 3 : 가스관1: burner combustion chamber 2: fan 3: gas pipe

4 : 주 열교환기 5 : 온수용 열교환기 6 : 가스배출구4 main heat exchanger 5 hot water heat exchanger 6 gas outlet

7 : 난방 환수관 8 : 보일러 환수관 9 : 팽창탱크7: heating return pipe 8: boiler return pipe 9: expansion tank

10 : 급수예열통 11 : 내부 가스유통로 12 : 원통형 히트파이프10: water supply preheating cylinder 11: internal gas flow passage 12: cylindrical heat pipe

12a : 자바라주벽 12b : 링형 박판 12c : 길이가 긴 박판12a: bellows wall 12b: ring-shaped sheet 12c: long sheet

13 : 물집 외통체 14 : 유입구 15 : 유출구13: blister outer cylinder 14: inlet port 15: outlet port

16 : 자동공기 분출구가 있는 물 토출관16: water discharge pipe with automatic air outlet

가스관(3)으로 공급되는 가스를 팬(2)에 의해 버어너 연소실(1)에서 연소하여 주 열교환기(4)를 가열시켜 주는 가스보일러에 있어서 가스보일러의 가스배출구 (6)에 중앙 내부의 가스유통로(11)가 연관되게 내,외 이중벽이 자바라주벽(12a)으로 굴곡된 원통형 히트파이프(12)와 그 외주는 물집 외통체(13)로 형성된 급수예열통(10)을 부설시키고 물집 외통체(13)에는 일편 하부단의 유입구(14)에 난방 환수관(7)을, 타편 상부단의 유출구(15)에 보일러 환수관(8)을 각각 연결시켜서 된 것으로 미설명 부호 (5)는 온수 열교환기 이고, (9)는 팽창탱크 이고, (16)은 자동공기 토출관 이다.In a gas boiler in which the gas supplied to the gas pipe 3 is burned by the fan 2 in the burner combustion chamber 1 to heat the main heat exchanger 4, the gas outlet 6 of the gas boiler has a central inside. Cylindrical heat pipes 12 whose inner and outer double walls are bent into the bellows wall 12a and the outer periphery of the gas flow passage 11 are laid with a water supply preheating tube 10 formed of a blister outer cylinder 13 and blistered. The outer cylinder 13 is connected to the heating return pipe 7 at the inlet 14 at the lower end of one piece and the boiler return pipe 8 at the outlet 15 at the other end of the other end. Is a hot water heat exchanger, 9 is an expansion tank, and 16 is an automatic air discharge tube.

그리고 원통형 히트파이프(12)의 내,외 이중벽에 열접촉면적을 극대화 시키기 위하여 일정한 간격으로 여러개가 내외부로 돌출되게 링형박판(12b)을 직경방향으로 부착시키거나 또는 길이가 긴 박판(12c)을 방사가 되게 길이방향으로 부착시킬 수도 있는 것이다.In order to maximize the thermal contact area on the inner and outer double walls of the cylindrical heat pipe 12, the ring-shaped thin plates 12b are attached in a radial direction so as to protrude in and out at regular intervals, or the long thin plates 12c are provided. It can also be attached in the longitudinal direction to the radiation.

이와같은 구성으로 된 본 고안의 사용상태를 설명하면 가스버어너를 작동하여 가스관(3)에서 공급되는 가스를 팬(2)에 의해 버어너 연소실(1)에서 연소하여 가스보일러 내부의 주 열교환기(4) 가열시키고 180∼200℃ 온도의 배기가스가 가스배출구(6)로 배출되어 가스배출구(6)에 부설된 급수예열통(10)의 중앙 내부 가스유통로(11)로 통과하면서 중앙 내부 가스유통로(11)에 형성된 원통형 히트파이프(12)로 배기가스의 폐열이 급속히 전도되어 외주의 물집 외통체(13)의 급수를 가열시킨후 65℃ 온도의 배기가스로 배출되는 것으로 이때 배기가스의 폐열을 전도한 히트파이프(12)에 의해 폐열이 급속히 물집 외통체(13)로 전달이 되어 물집 외통체 (13) 일편 하부단의 유입구(14)로 유입되는 난방후 환수되는 물을 가열시켜 보일러 환수관(8)을 통해 다시 가스보일러 내부의 주 열교환기로 공급 시키므로서 가스보일러의 열효율을 상승시킬 뿐만 아니라 결로현상을 방지할 수가 있는 것이다.Referring to the use state of the present invention having such a configuration, by operating the gas burner to burn the gas supplied from the gas pipe (3) in the burner combustion chamber (1) by the fan (2) to the main heat exchanger inside the gas boiler (4) Heated and exhaust gas at a temperature of 180 to 200 ° C. is discharged to the gas outlet 6 and passes through the gas flow passage 11 in the center of the feedwater preheating vessel 10 attached to the gas outlet 6. Waste heat of the exhaust gas is rapidly conducted to the cylindrical heat pipe 12 formed in the gas flow passage 11 to heat the water supply of the blister outer cylinder 13 of the outer periphery, and then discharged as exhaust gas at a temperature of 65 ° C. Waste heat is rapidly transferred to the blister outer cylinder 13 by the heat pipe 12 conducting the waste heat of the heat pipe 12 to heat the water returned after heating flowing into the inlet 14 of the lower end of the blister outer cylinder 13. Gas boiler back through the boiler return pipe (8) As well as to increase the thermal efficiency of gas boilers standing because supplied to the main heat exchanger unit which will be to prevent condensation.

Claims (3)

가스관(3)으로 공급되는 가스를 팬(2)에 의해 버어너 연소실(1)에서 연소하여 주 열교환기(4)를 가열시켜 주는 가스보일러에 있어서 가스보일러의 가스배출구 (6)에 중앙 내부의 가스유통로(11)가 연관되게 내,외 이중벽이 자바라주벽(12a)으로 굴곡된 원통형 히트파이프(12)와 그 외주는 물집 외통체(13)로 형성된 급수예열통(10)을 부설시키고 물집 외통체(13)에는 일편 하부단의 유입구(14)에 난방 환수관(7)을, 타편 상부단의 유출구(15)에 보일러 환수관(8)을 각각 연결시켜서 된 가스보일러의 배기가스 폐열 회수장치In a gas boiler in which the gas supplied to the gas pipe 3 is burned by the fan 2 in the burner combustion chamber 1 to heat the main heat exchanger 4, the gas outlet 6 of the gas boiler has a central inside. Cylindrical heat pipes 12 whose inner and outer double walls are bent into the bellows wall 12a and the outer periphery of the gas flow passage 11 are laid with a water supply preheating tube 10 formed of a blister outer cylinder 13 and blistered. The exhaust pipe waste heat recovery of the gas boiler is connected to the outer cylinder 13 by connecting the heating return pipe 7 to the inlet port 14 of one lower end and the boiler return pipe 8 to the outlet 15 of the other upper end, respectively. Device 제1항에 있어서 원통형 히트파이프(12)의 내,외 이중벽에 일정한 간격으로 여러개가 내외부로 돌출되게 링형박판(12b)을 직경방향으로 부착시켜서 된 가스보일러의 배기가스 폐열 회수장치The exhaust gas waste heat recovery apparatus of a gas boiler according to claim 1, wherein a ring-shaped thin plate (12b) is attached to the inner and outer double walls of the cylindrical heat pipe (12) at regular intervals so as to protrude in and out. 제1항에 있어서 원통형 히트파이프(12)의 내,외 이중벽에 일정한 간격으로 여러개가 내외부로 돌출되게 길이가 긴 박판(12c)을 방사가 되게 길이방향으로 부착시켜서 된 가스보일러의 배기가스 폐열 회수장치The exhaust gas waste heat recovery of the gas boiler according to claim 1, wherein the thin plates 12c are elongated to be radially attached to the inner and outer double walls of the cylindrical heat pipe 12 so as to protrude to the inside and the outside at regular intervals. Device
KR20-2003-0001440U 2003-01-17 2003-01-17 Apparatus for recovering heat of waste gas from gas boiler KR200311752Y1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100797493B1 (en) 2007-10-11 2008-01-24 썬보일러 주식회사 Reducing system of nox
KR20140079040A (en) * 2012-12-18 2014-06-26 코웨이 주식회사 Water heating apparatus and water treating apparatus having the same
CN105157452A (en) * 2015-08-26 2015-12-16 武汉钢铁(集团)公司 Efficient heat exchanger for non-self-preheating gas burner type radiation pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100797493B1 (en) 2007-10-11 2008-01-24 썬보일러 주식회사 Reducing system of nox
KR20140079040A (en) * 2012-12-18 2014-06-26 코웨이 주식회사 Water heating apparatus and water treating apparatus having the same
KR102075914B1 (en) 2012-12-18 2020-02-11 웅진코웨이 주식회사 Water heating apparatus and water treating apparatus having the same
CN105157452A (en) * 2015-08-26 2015-12-16 武汉钢铁(集团)公司 Efficient heat exchanger for non-self-preheating gas burner type radiation pipe
CN105157452B (en) * 2015-08-26 2017-07-21 武汉钢铁(集团)公司 High-performance heat exchanger for non-self preheated fuel gas burner formula radiant tube

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