KR960008179B1 - Heat-exchanger of boiler - Google Patents

Heat-exchanger of boiler Download PDF

Info

Publication number
KR960008179B1
KR960008179B1 KR1019940006146A KR19940006146A KR960008179B1 KR 960008179 B1 KR960008179 B1 KR 960008179B1 KR 1019940006146 A KR1019940006146 A KR 1019940006146A KR 19940006146 A KR19940006146 A KR 19940006146A KR 960008179 B1 KR960008179 B1 KR 960008179B1
Authority
KR
South Korea
Prior art keywords
heat
heat exchanger
weight
parts
combustion
Prior art date
Application number
KR1019940006146A
Other languages
Korean (ko)
Other versions
KR950027354A (en
Inventor
김석구
전세균
Original Assignee
린나이코리아 주식회사
최창선
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 린나이코리아 주식회사, 최창선 filed Critical 린나이코리아 주식회사
Priority to KR1019940006146A priority Critical patent/KR960008179B1/en
Publication of KR950027354A publication Critical patent/KR950027354A/en
Application granted granted Critical
Publication of KR960008179B1 publication Critical patent/KR960008179B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • 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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • 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
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Gas Burners (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

a heating pipe (15) heated by combustion heat of a burner (14) in a casing (11); a blower (12) supplying air for combustion located at the lower part; an exhaust hole (13) for discharging exhaust gas; plate-shape heat absorption pins (16) for increasing a heat absorbing area of the heating pipe (15) located at the heating pipe (15); a ceramic coating layer of soluble metallic phosphate of 100 weight percent; carbon powder of 10 to 100 weight percent; black pigments of 15 to 25 weight percent; metallic oxide powder of 30 to 40 weight percent; and combustion gas purifying catalyst of 1.0 to 3.0 weight percent applied to the outer surface of each of the heating pipe (15) and heat absorption pins (16).

Description

보일러의 열교환기Heat exchanger of boiler

제1도는 열교환기를 일부 절결로하여 보인 정면도.1 is a front view of the heat exchanger with some notches.

제2도는 요부 확대 단면도.2 is an enlarged sectional view of the main part.

*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 열교환기 11 : 케이싱10: heat exchanger 11: casing

14 : 버너 15 : 가열관14: burner 15: heating tube

16 : 흡열핀 20 : 세라믹 코팅층16: endothermic fin 20: ceramic coating layer

본 발명은 주로 가스보일러에 설치되는 열교환기에 관한 것으로서, 더 상세하게는 열교환기의 내부에 배열된 가열관과 흡열핀의 외주면을 특정조성의 세라믹제로 코딩하여 열효율을 증대하고, 부식방지 및 유해가스의 배출을 줄일 수 있도록 된 보일러의 열교환기에 관한 것이다.The present invention relates mainly to a heat exchanger installed in a gas boiler, and more particularly, to improve the thermal efficiency by coding the outer circumferential surfaces of the heating tube and the endothermic fin arranged inside the heat exchanger with a specific composition of ceramic, and to prevent corrosion and harmful gases. It relates to a heat exchanger of a boiler so as to reduce the emission of water.

일반적으로 종래 알려진 가스보일러의 열교환기는 케이싱내에 다수개의 군으로 이루어진 버너가 형성되고, 저면에는 연소용 공기를 공급하는 송풍기(12)가 설치되며, 상부에는 배기가스를 배출시키기 위한 배기구(13)가 가스보일러의 케이싱(11)을 뚫고 형성되어 있다. 또, 난방수 및 온수로 사용하기 위한 가열관이 케이싱을 관통하여 지그재그식으로 버너의 상부로 배관되어, 버너의 연소열에 의해 가열관이 가열되는 열교환 작용이 이루어지며, 이 때 가열관의 흡열면적을 증대시키기 위하여 판상의 흡열핀을 가열관에 직각되게 다수 연접시키는 것이 일반적이다.In general, a gas boiler heat exchanger includes a burner having a plurality of groups in a casing, a blower 12 for supplying combustion air at the bottom thereof, and an exhaust port 13 for discharging exhaust gas at the top thereof. It is formed through the casing 11 of the gas boiler. In addition, a heating tube for use as heating water and hot water passes through the casing and is zigzagly piped to the upper portion of the burner, and a heat exchange action is performed in which the heating tube is heated by the combustion heat of the burner, and at this time, the endothermic area of the heating tube In order to increase the number, it is common to connect a plurality of plate-shaped endothermic pins perpendicular to the heating tube.

이와 같이 구성되는 열교환기의 가열관과 흡열핀 등은 주로 열효율을 위하여 철과 구리, 알루미늄 및 스테인레스재 등의 금속성분으로 제작되는데, 예컨대 대한민국 실용신안공보 제90-9539호는 알루미늄을 주성분으로 해서 압출성형된 압출재료로 이루어지는 연소식 히이터 열교환기를 개시하였으나, 이러한 재료로 된 가열관이나 부품들은 가열원에 함유되는 각종 부식성 가스 및 수분에 의해 쉽게 저온부식된다는 단점을 필연적으로 가졌다.The heating tube and the heat absorbing fin of the heat exchanger configured as described above are mainly made of metal components such as iron, copper, aluminum and stainless steel for thermal efficiency. For example, Korean Utility Model Publication No. 90-9539 uses aluminum as a main component. Although a combustible heater heat exchanger made of an extruded extruded material has been disclosed, it has inevitably had a disadvantage in that heating tubes or parts made of such a material are easily corroded by various corrosive gases and moisture contained in a heating source.

즉 가열관이나 흡열핀의 표면에 경화된 부식층이 침착되어 열전도가 약화되는 결과로, 열요율이 크게 저하되는 원인이 되었을 뿐만 아니라, 표면이 쉽게 훼손되어 기기 전체의 수명이 저하되었던 것이다.In other words, the hardened corrosion layer is deposited on the surface of the heating tube or the heat absorbing fin, resulting in a weakening of the thermal conductivity, which not only causes a large decrease in the heat rate, but also causes the surface to be easily damaged, thereby reducing the life of the entire apparatus.

이러한 문제점을 해소하기 위하여 유기도료 및 법량과 같은 표면처리를 수행하는 것도 제안된 바 있었다. 그러나 유기도료를 형성하는 경우는 내열성이 약하여 고온을 유지하는 열교환기의 내부에는 견디지 못하였다. 또, 법랑처리의 경우에는 열효율이 낮고, 특히 흡열관이 정밀하게 연접되는 비교적 복잡한 형상의 특성을 갖는 열교환기의 내부에는 일정하고 정밀한 피복두께가 형성되지 못하여 적용하는데 문제점이 따랐다.In order to solve this problem, it has also been proposed to carry out surface treatment such as organic paints and law. However, in the case of forming the organic paint, the heat resistance was weak, so that it could not withstand the inside of the heat exchanger maintaining high temperature. In addition, in the case of enamel processing, there is a problem in that a constant and precise coating thickness is not formed inside the heat exchanger having low thermal efficiency and particularly having a relatively complicated shape in which the endothermic tube is precisely connected.

한편 대한민국 실용신안 공보 제85-765호(투관형 고온 열교환기)는 세라믹 성분 구조의 투관형 고온 열교환기를 개시하면서, 열교환기를 구성하는 다수의 세라믹관의 재료로서 실리콘 카바이드(SiC)가 바람직하고 이 대신 베릴륨옥사이드, 고밀도 알루미나 또는 지르코니아, 서멧트와 같은 세라믹재를 이용할 수 있다고 기재하고 있으며, 대한민국 특허공보 제91-8896호(세라믹관형 열교환기)에서는 약 900℃ 이상의 배기가스를 회수키 위한 세라믹관의 재료로서 내산, 내식, 내마모, 내열충격 등에 관한 탄화규소(SiC)질, 알루미나(Al2O3)의 재료를 개시하고 있음을 알 수 있다.On the other hand, Korean Utility Model Publication No. 85-765 (tubing type high temperature heat exchanger) discloses a tubular type heat exchanger having a ceramic component structure, and silicon carbide (SiC) is preferable as a material of many ceramic tubes constituting the heat exchanger. Instead, it describes that ceramic materials such as beryllium oxide, high density alumina or zirconia, and cermet can be used.In Korean Patent Publication No. 91-8896 (ceramic tube heat exchanger), a ceramic tube for recovering exhaust gas of about 900 ° C or more is described. It can be seen that the materials of silicon carbide (SiC), alumina (Al 2 O 3 ) related to acid resistance, corrosion resistance, abrasion resistance, thermal shock, and the like are disclosed.

또한 일본 공개특허공보 소 62-225893호의 세라믹 구조체는 세라믹 열교환체의 핀이 탄화규소질, 질화규소질, 질화알루미늄질 등, 특히 탄화규소질로 대표되는 고열전도율을 가지는 세라믹으로 구성되어 있음을 개시한다.In addition, the ceramic structure of Japanese Patent Laid-Open No. 62-225893 discloses that the fin of the ceramic heat exchanger is made of a ceramic having high thermal conductivity, such as silicon carbide, silicon nitride, aluminum nitride, and especially silicon carbide.

이에 대하여 본 발명은 결합제의 역할을 하는 수용성 금속인산염, 열전도성의 향상을 위한 탄소질 분말, 열과 빛을 효율적으로 흡수하기 위한 흑색안료, 적외선 방사를 위한 산화물 분말 및 가스정화용 촉매로 이루어진 세라믹 층이 열교환기 내부의 가열관과 흡열핀 둘레를 코팅하고 있도록 하여 종래의 것에 비하여 열효율이 상당히 증대된 열교환기를 제공함을 목적으로 한다.On the other hand, the present invention is a heat-exchanging ceramic layer consisting of a water-soluble metal phosphate serving as a binder, carbonaceous powder for improving thermal conductivity, black pigment for efficiently absorbing heat and light, oxide powder for infrared radiation and catalyst for gas purification It is an object of the present invention to provide a heat exchanger having a significantly increased thermal efficiency compared to the conventional one by coating a heating tube and a heat absorbing fin around the inside.

즉, 본 발명의 목적은 열효율을 증대시킬 수 있도록 된 열교환기 및 촉매반응으로 배기가스를 순화시킬 수 있도록 된 열교환기를 제공하는 것이다.That is, it is an object of the present invention to provide a heat exchanger capable of increasing thermal efficiency and a heat exchanger capable of purifying exhaust gas by catalytic reaction.

이하 본 발명을 첨부된 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 열교환기는 속이 빈 함체형의 케이싱(11)내에서 버너(14)의 연소열로 가열관(15)을 가열토록 하고, 하부에는 연소용 공기를 공급하는 송풍기(12)가 설치되며, 상부에는 배기가스를 배출시키기 위한 배기구(13)가 뚫어지고, 가열관(15)의 흡열면적을 증대시키기 위한 판상의 흡열핀(16)들을 가열관(15)에 다수개 고정 설치하여 구성되며, 상기 열교환기(10)의 케이싱(11) 내부로 배열되는 가열관(15)과 흡열핀(16)들의 외주면에 일정 조성의 세라믹 코팅(20)이 도착된 것을 특징으로 한다.The heat exchanger of the present invention allows the heating tube 15 to be heated by the combustion heat of the burner 14 in the hollow enclosure-type casing 11, and a blower 12 for supplying combustion air is installed at the lower portion, The exhaust port 13 for discharging the exhaust gas is formed therein, and a plurality of plate-shaped endothermic fins 16 for increasing the heat absorbing area of the heating tube 15 are fixed to the heating tube 15. A ceramic coating 20 having a predetermined composition arrives on the outer circumferential surfaces of the heating tube 15 and the heat absorbing fins 16 arranged inside the casing 11 of the heat exchanger 10.

상기 열교환기(10)는 그 내부로 설치되는 버너(14)의 연소열로 가열관(1)을 통과하는 물을 가열시켜 난방 및 온수용으로 사용할 수 있도록 보일러에 설치되는 것이다.The heat exchanger 10 is installed in the boiler to be used for heating and hot water by heating the water passing through the heating tube (1) by the heat of combustion of the burner 14 installed therein.

이 열교환기(10)의 구성은 속이 비고, 하부와 상부가 트여져 하부에는 외부 공기를 강제 공급하기 위한 송풍기(12)가 설치되고, 상부에는 배기가스를 배출시키기 위한 배기구(13)가 형성된다.The configuration of the heat exchanger 10 is hollow, and the lower part and the upper part are open so that a blower 12 for forcibly supplying external air is provided in the lower part, and an exhaust port 13 for discharging the exhaust gas is formed in the upper part. .

또, 내부에는 가스 보일러의 경우 가스를 연료로서 연소시키는 버너(14)가 보일러의 연소용량에 따라 다수개 설치되며, 그 상부로는 물이 통과되는 가열관(15)이 지그재그식으로 배열되고, 가열과(15)의 흡열 면적을 증대시키기 위한 수단으로 판상으로 된 흡열핀(16)들이 다수 간격을 유지하며 가열관(15)에 대략 직각되게 고정 부착된 바, 이는 종래와 동일하다.In addition, in the case of a gas boiler, a plurality of burners 14 for burning gas as fuel are installed in accordance with the combustion capacity of the boiler, and a heating tube 15 through which water passes is arranged in a zigzag manner at an upper portion thereof. As a means for increasing the endothermic area of the heating section 15, the plate-shaped endothermic fins 16 have a plurality of intervals and are fixedly attached to the heating tube 15 at approximately right angles, which is the same as in the prior art.

본 발명의 중요한 구성상의 특징은 상기 열교환기(10)의 케이싱(11)내에 있는 가열관(15) 및 흡열핀(16)의 외주면에 형성된 세라믹 코팅층(20)이다.An important structural feature of the present invention is the ceramic coating layer 20 formed on the outer circumferential surface of the heating tube 15 and the heat absorbing fin 16 in the casing 11 of the heat exchanger 10.

상기 세라믹 코팅층은 결합제의 역할을 하는 수용성 금속인산염 100중량부, 열전도성의 향상을 위한 열전도성 탄소질 분말 10 내지 100중량부, 흑색안료 15 내지 25중량부, 적외선 방사를 위한 산화물 분말 30 내지 40중량부 및 가스 정화용 촉매 1.0 내지 3.0중량부로 이루어진다. 이러한 조성성분과 조성비율을 갖는 세라믹 코팅층은 안정된 도막을 형성하여 균열이 생기지 않을 뿐만 아니라 열이나 빛을 효과적으로 흡수하기 위한 흑색안료 및 적외선 방사용 산화물을 포함함으로써 열효율을 극대화하도록 하며, 연소가스를 정화하기 위한 촉매도 포함하여 열교환기의 효율을 최대화하도록 한다.The ceramic coating layer is 100 parts by weight of a water-soluble metal phosphate to act as a binder, 10 to 100 parts by weight of thermally conductive carbonaceous powder for improving thermal conductivity, 15 to 25 parts by weight of black pigment, 30 to 40 weight of oxide powder for infrared radiation Part and 1.0 to 3.0 parts by weight of a catalyst for gas purification. The ceramic coating layer having such a composition component and composition ratio not only forms a stable coating film but does not cause cracks, and also includes black pigment and infrared radiation oxide to effectively absorb heat or light, thereby maximizing thermal efficiency and purifying combustion gas. A catalyst is also included to maximize the efficiency of the heat exchanger.

상기에서 수용성 금속인산염은 MxOy·mP2O5·nH2O로 표시할 수 있는데 여기서 M은 2가 이상의 금속이며, x 또는 y는 M의 원가가에 의해 정해지는 정수이고, m은 수용성 인산염과 다가금속의 몰비를 나타내는 정수로서 4 이하이어야 하며, n은 정수(0,1,2…)이다. 수용성 다가금속은 인산염의 구체적인 예는 인산칼슘, 인산마그네슘, 인산아연, 인산알루미늄 등이다.The water-soluble metal phosphate may be represented by MxOy · mP 2 O 5 · nH 2 O where M is a divalent or higher metal, x or y is an integer determined by the cost of M, and m is a water-soluble phosphate An integer representing the molar ratio of the polyvalent metal, which must be 4 or less, and n is an integer (0, 1, 2 ...). Specific examples of the water-soluble polyvalent metal phosphate include calcium phosphate, magnesium phosphate, zinc phosphate, aluminum phosphate and the like.

상기 세라믹 코팅층은 도막의 열전도성을 위하여 탄소질분말을 10 내지 100중량부 포함하는데, 이러한 탄소질분말로서는 카본블랙, 흑연, 인조흑연 등 천연 또는 인조의 탄소질, 흑연질의 분말이 적당하며, 인조흑연 분말이 내열성, 화학적 안정성 및 품질의 안정성 면에서 바람직하다.The ceramic coating layer contains 10 to 100 parts by weight of carbonaceous powder for the thermal conductivity of the coating film, such as carbonaceous powder, carbon black, graphite, artificial graphite, such as natural or artificial carbonaceous, graphite powder is suitable, Graphite powders are preferred in terms of heat resistance, chemical stability and quality stability.

또한 본 발명의 세라믹 코팅층은 열이나 빛의 흡수를 효율적으로 이루기 위하여 흑색안료를 15 내지 25중량부 포함하며, 흑색안료의 예로서는 망간, 구리, 철, 코발트, 니켈, 크롬, 몰리브덴 등과 같이 전이금속의 산화물이 적당하고, 이들 중 하나 또는 두개의 안료를 사용하는 것이 바람직하다. 즉, 복산화물 또는 페라이트(Ferrite)의 형태로 사용될 수 있다.In addition, the ceramic coating layer of the present invention comprises 15 to 25 parts by weight of a black pigment in order to efficiently absorb heat or light, examples of the black pigment is a transition metal such as manganese, copper, iron, cobalt, nickel, chromium, molybdenum, etc. Oxides are suitable and it is preferred to use one or two of these pigments. That is, it may be used in the form of complex oxide or ferrite.

적외선 방사를 위한 산화물로서는 TiO2, SiO2, Al2O3또는 ZrSiO4등이 30 내지 40중량부만큼 이용될 수 있다.As the oxide for infrared radiation, TiO 2 , SiO 2 , Al 2 O 3, or ZrSiO 4 may be used by 30 to 40 parts by weight.

연소가스 정화용 촉매로서는 팔라듐(Pd)과 로듐(Rh)이 1.0 내지 3.0중량부 만큼 사용되는데, 팔라듐은 일산화탄소 및 탄화수소의 산화반응의 촉매로서 뛰어난 역할을 하며, 로듐은 산화질소(NO2)의 환원반응의 촉매로서 뛰어나다.As a catalyst for purifying combustion gas, palladium (Pd) and rhodium (Rh) are used in an amount of 1.0 to 3.0 parts by weight, and palladium plays an excellent role as a catalyst for oxidation reaction of carbon monoxide and hydrocarbons, and rhodium reduces nitrogen oxide (NO 2 ). Excellent as a catalyst for the reaction.

즉 본 발명의 세라믹 코팅층은 열전도성이 높은 탄소분말 뿐만 아니라 열이나 빛을 효과적으로 흡수하기 위한 흑색안료 및 적외선방사용 산화물을 일정비율로 포함함으로써 열교환기의 열효율을 극대화하도록 하며, 아울러 연소가스를 정화하기 위한 촉매도 포함하여 종래의 열교환기의 효율을 최대화함을 특징으로 하는 것이다.That is, the ceramic coating layer of the present invention includes not only carbon powder having high thermal conductivity but also black pigment and infrared radiation oxide to effectively absorb heat or light at a constant ratio to maximize the thermal efficiency of the heat exchanger, and purify the combustion gas. It is also characterized by maximizing the efficiency of the conventional heat exchanger, including the catalyst for.

본 발명의 실시예를 표로 나타내면 다음과 같다.The embodiment of the present invention is shown in the following table.

상기 표에서 내비등수성은 4시간동안 실험한 결과를 나타낸다.Boiling water resistance in the table shows the results of experiments for 4 hours.

이상과 같은 물질들로 이루어지는 세라믹 코팅층은 열교환기의 내부에 위치되는 가열관 및 흡열핀, 그리고 그 주위에 위치되는 케이싱의 내부 표면에 도포함으로써, 종래의 것에 비하여 열효율이 현저히 향상되고, 내식성이 강화되며 가스의 정화율이 현저히 상승된 열교환기를 제공하게 된다.The ceramic coating layer made of the above materials is applied to the inner surface of the heating tube and the heat absorbing fin located inside the heat exchanger, and the casing located around the heat exchanger, whereby the thermal efficiency is remarkably improved compared to the conventional one, and the corrosion resistance is enhanced. This provides a heat exchanger with a significantly increased gas purification rate.

Claims (1)

속이 빈 함체형의 케이싱(11)내에서 버너(14)의 연소열로 가열관(15)을 가열토록 하고, 하부에는 연소용 공기를 공급하는 송풍기(12)가 설치되며, 상부에는 배기가스를 배출시키기 위한 배기구(13)가 뚫어지고, 가열관(15)의 흡열면적을 증대시키기 위한 판상의 흡열핀(16)들이 가열관(15)에 다수개 고정설치되며, 상기 케이싱(11) 내부로 배열되는 가열관(15)과 흡열핀(16)들의 외주면에 세라믹 코팅층이 도착된 보일러의 열교환기에 있어서, 상기 세라믹 코팅층은 수용성 금속인산염 100중량부, 탄소질분말 10∼100중량부, 흑색안료 15∼25중량부, 금속산화물분말 30∼40중량부 및 연소가스 정화용촉매 1.0∼3.0중량부로 구성되는 것을 특징으로 하는 보일러의 열교환기.In the hollow enclosure-type casing 11, the heating pipe 15 is heated by the combustion heat of the burner 14, and a blower 12 is installed at the lower part to supply air for combustion, and exhaust gas is discharged at the upper part. Vent holes 13 are formed to be drilled, and a plurality of plate-shaped endothermic fins 16 for increasing the heat absorbing area of the heating tube 15 are fixed to the heating tube 15 and arranged inside the casing 11. In the heat exchanger of the boiler in which the ceramic coating layer arrives on the outer circumferential surface of the heating tube 15 and the heat absorbing fins 16, the ceramic coating layer is 100 parts by weight of water-soluble metal phosphate, 10 to 100 parts by weight of carbonaceous powder, and 15 to black pigment. A heat exchanger of a boiler comprising 25 parts by weight, 30 to 40 parts by weight of a metal oxide powder and 1.0 to 3.0 parts by weight of a catalyst for purifying combustion gas.
KR1019940006146A 1994-03-26 1994-03-26 Heat-exchanger of boiler KR960008179B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940006146A KR960008179B1 (en) 1994-03-26 1994-03-26 Heat-exchanger of boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940006146A KR960008179B1 (en) 1994-03-26 1994-03-26 Heat-exchanger of boiler

Publications (2)

Publication Number Publication Date
KR950027354A KR950027354A (en) 1995-10-16
KR960008179B1 true KR960008179B1 (en) 1996-06-20

Family

ID=19379679

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940006146A KR960008179B1 (en) 1994-03-26 1994-03-26 Heat-exchanger of boiler

Country Status (1)

Country Link
KR (1) KR960008179B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030048921A (en) * 2001-12-13 2003-06-25 주식회사 엘지이아이 Heat exchanger and the manufacturing method for air conditioner

Also Published As

Publication number Publication date
KR950027354A (en) 1995-10-16

Similar Documents

Publication Publication Date Title
US4577681A (en) Heat exchanger having a turbulator construction
US4279293A (en) High temperature heat exchanger having porous tube sheet portions
JPS6235013B2 (en)
CA1104052A (en) Catalytic combustion process and system
HU185530B (en) Gas- or oil-fired warm water, hot water or steam boiler
KR960008179B1 (en) Heat-exchanger of boiler
GB2037607A (en) Heat exchangers
JPS6312225B2 (en)
US4852530A (en) Air pollution control electrocatalytic converter
CA1132016A (en) Boiler including a catalyst
JPH0739880B2 (en) Fluid heating device
KR100362846B1 (en) Heat accumulator for furnace regenerative combustion system_
JPH05761Y2 (en)
GB2118859A (en) Ceramic heat recuperator with catalyst
Khela et al. Ceramic heat exchangers--materials and component performance issues
JPS625225Y2 (en)
JPS59229200A (en) Heat exchanger
JPH11211353A (en) Heating furnace using radiant tube as heat source
JPH0282095A (en) Heat exchanger
JPS60240956A (en) Heat exchanger
KR20060000590A (en) Heat exchanger using a condensing gas boiler
Goetschius Heat transfer element assembly
CN1124454C (en) Closed-top combustion chamber smoke return boiler
KR960003691Y1 (en) Radiator pipe attaching circular plate typed heat-converted boby
JPH02122199A (en) Heat exchanger

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20060529

Year of fee payment: 11

LAPS Lapse due to unpaid annual fee