JP6514798B2 - 伝熱器パイプ及び該伝熱器パイプを有する加熱ボイラ - Google Patents
伝熱器パイプ及び該伝熱器パイプを有する加熱ボイラ Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims description 35
- 230000004323 axial length Effects 0.000 claims description 31
- 239000008236 heating water Substances 0.000 claims description 27
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 16
- 239000000567 combustion gas Substances 0.000 description 11
- 230000006872 improvement Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- 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
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
- F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
- F24H1/282—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with flue gas passages built-up by coaxial water mantles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B9/00—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
- F22B9/02—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed upright, e.g. above the combustion chamber
-
- 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
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/205—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes with furnace 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage 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
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
- F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire 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
- F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
-
- 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
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0026—Guiding means in combustion gas channels
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- 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
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0026—Guiding means in combustion gas channels
- F24H9/0031—Guiding means in combustion gas channels with means for changing or adapting the path of the flue gas
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- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0206—Heat exchangers immersed in a large body of liquid
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
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- 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
- F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
-
- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
-
- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
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- 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
- F28F1/105—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being corrugated elements extending around the tubular elements
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- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside 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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2210/00—Heat exchange conduits
- F28F2210/10—Particular layout, e.g. for uniform temperature distribution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/14—Fastening; Joining by using form fitting connection, e.g. with tongue and groove
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Description
‐圧力損失の増大により、燃焼室4及び伝熱器パイプ5の流入口での伝熱の改善が得られる。
‐狭窄部24又は陥没部29、30、35、36の領域における流速の増大により、伝熱の改善が得られる(層流対乱流)。
‐プロフィルインサート11のリブ14を用いた伝熱面積の拡大による、狭窄部24の後方又は下流の伝熱器パイプ5の第1長手部分22における低流速化、及び排ガス温度の低下によって、伝熱の改善が得られる。
2 加熱ボイラ
3 加熱水室
4 燃焼室
5 伝熱器パイプ
9 陥没部
10 アウターパイプ
11 プロフィルインサート
12 長手方向
14 リブ
15、16 シェル要素
17 長手縁辺部
18 窪み、密封溝
19 突起、密封リブ
22 第1長手部分
23 第2長手部分
24 断面狭窄要素
25 第1長手部分の軸方向長さ
26 第2長手部分の軸方向長さ
27 第1パイプ平面
28 第2パイプ平面
29、30 第1陥没部、第1隆起部
31 第1貫流間隙
32 アウターパイプの直径
35、36 第2陥没部、第2隆起部
37 第2貫流間隙
39 貫流断面
Claims (6)
- ボイラ炉の排ガスが貫流でき、かつ外側を加熱水で取り囲むことができるアウターパイプ(10)と、
前記アウターパイプ(10)の内側表面積を大きくするために前記アウターパイプ(10)の長手方向(12)に延在するリブ(14)を備え、かつ前記アウターパイプ(10)と導熱接触している、前記アウターパイプ(10)内に挿入されたプロフィルインサート(11)と
を備える、加熱ボイラ(2)、特にコンデンシングボイラの伝熱器パイプ(5)であって、
前記アウターパイプ(10)の第1長手部分(22)は、平滑な壁で円筒状に形成され、
前記アウターパイプ(10)の第2長手部分(23)は、貫流断面を狭める少なくとも1つの断面狭窄要素(24)を備え、
前記プロフィルインサート(11)は、前記アウターパイプ(10)の第1長手部分(22)のみにわたって延在し、
前記少なくとも1つの断面狭窄要素(24)は、前記アウターパイプ(10)の前記第2長手部分(23)内に挿入される、ノズル状に形成されたパイプインサートとして成形され、
前記第2長手部分(23)は燃焼室(4)と前記第1長手部分(22)との間に配置されるとともに該第1長手部分(22)は前記第2長手部分(23)の軸方向長さの少なくとも2倍に相当する軸方向長さを有する
ことを特徴とする、伝熱器パイプ(5)。 - 前記プロフィルインサート(11)は、それぞれ1つの扇形の断面を備える少なくとも2つのシェル要素(15、16)から形成されたパイプ体を含む
ことを特徴とする、請求項1に記載の伝熱器パイプ(5)。 - 前記パイプ体は、2つの前記シェル要素(15、16)を含み、前記2つのシェル要素(15、16)は、互いに接する長手縁辺部(17)に、溝状の窪み(18)及びリブ状の突起(19)を有して形成され、前記窪み(18)及び前記突起(19)を用いてシール状に係合され、
前記2つのシェル要素(15、16)はその内側に、前記パイプ体の内法断面に突出しかつ前記アウターパイプ(10)の前記長手方向(12)に延在する前記リブ(14)を有して形成され、各前記シェル要素(15、16)は、前記リブ(14)が片側に開いたプロフィルを形成する
ことを特徴とする、請求項2に記載の伝熱器パイプ(5)。 - 前記2つのシェル要素(15、16)はそれぞれ、一方の前記長手縁辺部(17)を密封溝(18)で、かつ別の前記長手縁辺部(17)を、前記密封溝(18)の形状に適合する密封リブ(19)で形成される
ことを特徴とする、請求項3に記載の伝熱器パイプ(5)。 - 前記アウターパイプ(10)は、金属の合金、好適には鋼から形成され、前記プロフィルインサート(11)はアルミニウムから形成される
ことを特徴とする、請求項1〜4のいずれか1項に記載の伝熱器パイプ(5)。 - 加熱水室(3)を画定し、かつ前記加熱水室(3)に前置された燃焼室(4)を備えるハウジング(1)を備える、加熱循環の加熱水を温めるための加熱ボイラ(2)、特にコンデンシングボイラであって、
前記燃焼室(4)から出て前記加熱水室(3)を通って延在する、請求項1に記載の少なくとも1つの伝熱器パイプ(5)が、前記ハウジング(1)内部に配設される
ことを特徴とする、加熱ボイラ(2)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15178123.4A EP3040638B1 (de) | 2015-07-23 | 2015-07-23 | Wärmeübertragerrohr und heizkessel mit einem solchen wärmeübertragerrohr |
EP15178123.4 | 2015-07-23 |
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JP2016125408A Division JP6318195B2 (ja) | 2015-07-23 | 2016-06-24 | 伝熱器パイプ及び該伝熱器パイプを有する加熱ボイラ |
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JP2018119781A JP2018119781A (ja) | 2018-08-02 |
JP6514798B2 true JP6514798B2 (ja) | 2019-05-15 |
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JP2016125408A Active JP6318195B2 (ja) | 2015-07-23 | 2016-06-24 | 伝熱器パイプ及び該伝熱器パイプを有する加熱ボイラ |
JP2018039460A Active JP6514798B2 (ja) | 2015-07-23 | 2018-03-06 | 伝熱器パイプ及び該伝熱器パイプを有する加熱ボイラ |
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Country Status (19)
Country | Link |
---|---|
US (1) | US9739503B2 (ja) |
EP (2) | EP3040638B1 (ja) |
JP (2) | JP6318195B2 (ja) |
KR (2) | KR101882928B1 (ja) |
CN (2) | CN106370042B (ja) |
AU (2) | AU2016204398B2 (ja) |
CA (2) | CA2998329C (ja) |
ES (2) | ES2847858T3 (ja) |
HK (1) | HK1252095A1 (ja) |
HR (2) | HRP20180853T1 (ja) |
HU (2) | HUE037245T2 (ja) |
PL (2) | PL3301378T3 (ja) |
PT (1) | PT3040638T (ja) |
RS (2) | RS61336B1 (ja) |
RU (2) | RU2647012C2 (ja) |
SI (1) | SI3040638T1 (ja) |
TR (1) | TR201807745T4 (ja) |
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KR102120117B1 (ko) * | 2018-11-23 | 2020-06-09 | 주식회사 귀뚜라미 | 경사형 화실을 가지는 저탕식 보일러 |
WO2020132237A1 (en) * | 2018-12-19 | 2020-06-25 | Carrier Corporation | Heat exchanger with sacrificial turbulator |
KR102173136B1 (ko) * | 2019-05-21 | 2020-11-02 | 최성환 | 보일러의 파형 연관 구조 |
CN110749017A (zh) * | 2019-12-09 | 2020-02-04 | 佛山市顺德区雅洛特电器有限公司 | 顶置式上加水加湿器 |
CN114087909B (zh) * | 2021-11-19 | 2022-10-25 | 西安交通大学 | 一种自振动内插折弯挠曲形翅片复合烟管 |
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