WO1996009499A1 - Chaudiere a condensation - Google Patents

Chaudiere a condensation Download PDF

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Publication number
WO1996009499A1
WO1996009499A1 PCT/EP1995/003700 EP9503700W WO9609499A1 WO 1996009499 A1 WO1996009499 A1 WO 1996009499A1 EP 9503700 W EP9503700 W EP 9503700W WO 9609499 A1 WO9609499 A1 WO 9609499A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
heat
boiler according
condensing boiler
ceramic
Prior art date
Application number
PCT/EP1995/003700
Other languages
German (de)
English (en)
Inventor
Rudolf Justl
Original Assignee
Rudolf Justl
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 Rudolf Justl filed Critical Rudolf Justl
Priority to DE19581074A priority Critical patent/DE19581074C1/de
Priority to DE19581074D priority patent/DE19581074D2/de
Publication of WO1996009499A1 publication Critical patent/WO1996009499A1/fr

Links

Classifications

    • 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
    • F24H9/0084—Combustion air preheating
    • 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
    • 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]

Definitions

  • the invention relates to a condensing boiler for hot water heaters for operation with liquid or gaseous fuels according to the preamble of claim 1.
  • the disadvantage is the necessary regulation of the wall cooling in the combustion chamber, the failure of which, overheating or insufficient combustion results in an increased construction effort.
  • a simple coil is provided which forms a cylindrical combustion chamber in which the burner flame burns from top to bottom.
  • the combustion gases are redirected upwards on a baffle plate, which closes the combustion chamber at the bottom, and in an area in which the pipe coils are wound at a distance.
  • the, draft from where they flow inwards through the spaces in the lower part of the coil, which forms a heat exchanger for the return of the heating, and are drained centrally into a chimney under the baffle plate.
  • the fall train is surrounded on the outside by an insulating chamotte cylinder.
  • This boiler is not operated as a condensing boiler with condensation formation.
  • the coils are already flushed in the area of the combustion chamber, which increases the length of the dwell time of the flue gases in the combustion chamber.
  • the insulation area of the boiler is significantly increased by the external draft. The lack of condensate reduces the efficiency of the boiler compared to a condensing boiler.
  • DE-Al-34 21 276 describes a condensing boiler in which the burner flame is formed horizontally in an underlying combustion chamber and in which the combustion gases heat the fireclay walls in front of a surrounding water jacket and are passed through an upper opening into a room above by delivering their heat content to a multi-layer coil of a heat exchanger.
  • the condensate formed flows down through the furnace floor.
  • the arrangement of the heat exchanger above the combustion chamber will make it difficult to remove the condensate and, in particular, it will be difficult to avoid corrosion in the heat exchanger during the boiler shutdown because moisture inevitably remains in the heat exchanger room or in the combustion chamber and is difficult to remove is.
  • the object of the invention is to provide a condensing boiler
  • Hot water heaters for operation with liquid or gas to create combustible fuels in the simplest possible construction and high efficiency, in which the condensate formation takes place only in an area in which no corrosion is possible and which is as simple as possible through the flow of both the flue gases and the liquid heat medium is excellent and has little need for regulation; In addition, the prescribed exhaust gas limit values should be observed.
  • the coiled tubing in the combustion chamber which is sealed against the passage of the flue gases, results in a compact structure and avoids areas in which condensation can lead to corrosion.
  • baffle plate to bring the flue gases to the lower part of the tube coil serves the same purpose and additionally improves the heat absorption through increased convection.
  • the deflection plate which is flown by the flue gases, forms a heat accumulator that protects against condensation, especially when it is at a standstill.
  • the closely installed heat exchanger enables a short flue gas path and thus reduces flow resistance and enables low NOX values for the flue gases.
  • the symmetrical attachment of the deflection plate and thus the symmetrical arrangement of a beam is advantageous because of the uniform exposure to the flue gases, with the deflection plate additionally being heated from below.
  • an upstream draft for the flue gas duct is favorable.
  • the production of the deflection plate from a correspondingly stable material is advantageous for the period of use, while the production of a uniform annular gap is important for the uniform loading of the tube coil and also of the heat exchanger.
  • the sealed-off design of the coiled tubing creates a sealed combustion chamber in which the escape of smoke gases or the entry of false air is avoided;
  • Ceramic wet fiber fleece is an ideal material for this because of its good mechanical adaptability during processing and because of its good sealing properties after solidification.
  • the tube coil is placed in a very simple manner on refractory support plates, with the interposition of the aforementioned material for sealing.
  • the heat transfer to the heating medium in the coiled tubing is improved by using a correspondingly good heat-conducting and corrosion-resistant material, which is important for the length of use.
  • a condensate collector made of plastic with an attached funnel, which extends over the entire cross section of the heat exchanger, for the discharge of the flue gases and the condensate draining off is inexpensive to manufacture, corrosion-resistant, easy to assemble and to seal well.
  • the condensate drain is particularly easy to install in a prepared shaft in the support plates.
  • the utilization of the flue gases can be further improved by connecting an air preheater between the condensate collector and the flue, the condensate of which is also collected in the condensate collector and from there it is subjected to a common aftertreatment. It is part of the tight design of the firebox that the coiled tubing is covered at the top by a cover plate, with a fire-resistant sealing material, such as a nonwoven fiber interlayer, and is clamped together with anchor rods against the boiler frame, which are easy to detach and therefore easy to disassemble allow the boiler.
  • the modular design of the individual components of the boiler is advantageous for easy replacement of the individual components.
  • Fig. 1 shows a vertical section through the middle
  • Fig. 2 is an oblique view of the high heat exchanger with the connection points on the manifolds, schematized.
  • a condensing boiler has a standing, cylindrical combustion chamber 1, which is formed by a closely coiled tube coil 3 made of copper tube, into which a fan burner 2 is inserted, burning downward.
  • the lower part 4 of the pipe coil 3 is made with a deflection plate 5 made of fire-resistant, ceramic material, in particular a ceramic fiber composite material, between the circumference 8 and the pipe coil 3 of a uniform annular gap 6 for the passage of the flue gases. is left.
  • the deflection plate 5 stands with a plurality of spacers 7 on a support plate 16, and thereby forms a lower beam 17 to which a centrally arranged, downwardly directed train 9 connects.
  • the deflection plate 5 is provided with a large-area depression 41 which forms an edge towards the circumference 8 and which serves to catch any liquid fuel which may drip off and with which contamination or sooting, in particular of the heat exchanger 10, is avoided.
  • the pipe coil 3 is placed on the fixed, heat-insulating support plate 16 with the interposition of a sealing, fire-resistant heat-insulating layer 15 '.
  • the lower beam 17 and the downward pull 9 are also lined with this thermal insulation layer 15 '; it consists of a ceramic fleece.
  • the coiled tubing 3 is also sealed and insulated with a sealing, fire-resistant thermal insulation layer 15 made of the aforementioned material.
  • a heat exchanger 10 which is designed as a ceramic high-performance heat exchanger with a thin wall material made of very good heat-conducting and corrosion-resistant material, e.g. from Si-Sic.
  • This heat exchanger has a large number of channels for the liquid heating medium and for the flue gases, in which these are guided in co-current flow or in part also in counter-flow.
  • the heat exchanger 10 is sealed up and down between the support plates 16 of the boiler with insulation plates 19 'made of mineral fiber fleece.
  • the supply line 33 'and the discharge line 33 of the liquid heating medium, in particular water, take place on opposite sides of the heat exchanger 10 arranged distributor pieces 14' and 14, which are connected to one another via anchor bolts 40 which pass through bores 39 ' and in threaded bores 39 Distributors 14 'and 14 are screwed and thereby clamped together.
  • the distributor piece 14 ' is screwed via the connection 33' to the return line 21 of the boiler and the other distributor piece 14 is screwed via the connection 33 to the connecting line 29 which is connected to the lower ends of the coiled tubing 3.
  • the liquid heating medium flows through the distributor channel 34 in the distributor piece 14 through the fluid channels 38 of the heat exchanger 10 and the deflection channels 35 in the distributor pieces 14 and 14 ', each of which is sealed with silicone seals inserted in sealing grooves 36.
  • the flue gases 20 flow through flue gas channels 37 of the heat exchanger 10 and, cooled to below the dew point, pass through the flange funnel 18 into the condensate drain 11.
  • the flue gases 20 flow through an air preheater 12 for the combustion air 28 of the fan burner 2 and from there into the chimney, while the combustion air 28 at the upper end of the air preheater 12 through the entry opening 42 between the inside - tube and the outer tube flows.
  • the condensate flowing out of the heat exchanger 10 and the chimney goes into the condensate collector 11 and, via a condensate drain 32, into an adsorption and ion exchange column (not shown).
  • the flow line 13 is led to the outside.
  • the pipe coil 3 is sealed against an overlying cover plate 23 of the combustion chamber 1 with an insulation sealing plate 19 made of mineral fiber fleece.
  • the cover plate 23 is overlaid by a cover plate 27 made of steel and clamped together with the latter against the heating frame 22 with the aid of anchor rods 26 and screw connections 31.
  • An opening 24 for the burner tube 25 of the forced-air burner 2 is provided in the cover plate 23 and the cover plate 27.
  • the external insulation 30 of the boiler is inserted between the cover plate 23 and the support plates 16.
  • Insulation and sealing plate of the combustion chamber 1 19 'Insulation and sealing plate of the

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Air Supply (AREA)

Abstract

L'invention concerne une chaudière à condensation à foyer vertical (1) dans laquelle est introduit un brûleur à soufflante (2) brûlant vers le bas. Cette chaudière est constituée d'une conduite hélicoïdale (3) enroulée de façon compacte et étanchéifiée afin d'être isolée thermiquement vers l'extérieur. Le foyer (1) est fermé au fond par une plaque de déviation (5) formant une fente annulaire (6) et dont le soufflage sous grille (17) permet l'afflux des fumées (20) dans un échangeur de chaleur (10). Refroidies à une température inférieure au point de rosée, les fumées (20) pénètrent dans un collecteur de purge (11) à partir duquel elles sont déviées tout d'abord dans un préchauffeur d'air (12) destiné à l'air de combustion (28) puis dans une cheminée. Le fluide de chauffage liquide traverse une conduite de retour (21) pour pénétrer dans un élément distributeur (14') de l'échangeur de chaleur (10), et traverse des conduites de liquides (38) de l'échangeur, des canalisations de dérivation (35) des deux éléments distributeurs (14, 14'), ainsi qu'une conduite de raccordement (29) pour pénétrer dans la conduite hélicoïdale (3) à travers laquelle le fluide circule de bas en haut, dans la conduite montante (13) de la chaudière à condensation.
PCT/EP1995/003700 1994-09-21 1995-09-20 Chaudiere a condensation WO1996009499A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19581074A DE19581074C1 (de) 1994-09-21 1995-09-20 Brennwertkessel
DE19581074D DE19581074D2 (de) 1994-09-21 1995-09-20 Brennwertkessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM308/94 1994-09-21
AT30894 1994-09-21

Publications (1)

Publication Number Publication Date
WO1996009499A1 true WO1996009499A1 (fr) 1996-03-28

Family

ID=3487115

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003700 WO1996009499A1 (fr) 1994-09-21 1995-09-20 Chaudiere a condensation

Country Status (2)

Country Link
DE (2) DE19581074D2 (fr)
WO (1) WO1996009499A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819137A1 (de) * 1998-04-29 1999-11-11 Deutsch Zentr Luft & Raumfahrt Feuerungsanlage
US10012413B2 (en) 2014-04-15 2018-07-03 Ecr International, Inc. Heat exchanger
CN111426060A (zh) * 2020-04-28 2020-07-17 西安交通大学 一种采用挤压成型工艺的燃气采暖壁挂炉
CN111433529A (zh) * 2017-11-29 2020-07-17 康德沃公司 热交换单元及方法
CN114719328A (zh) * 2022-05-10 2022-07-08 遵义市播州区鑫巨旺节能炉具有限公司 一种液体燃料炉具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514475A1 (fr) * 1981-10-08 1983-04-15 Bonnet Claude Chaudiere de petite puissance pour installations de chauffage
EP0114980A2 (fr) * 1983-01-26 1984-08-08 Feldmühle Aktiengesellschaft Chauffe-eau pour chauffage central
FR2627262A1 (fr) * 1988-02-11 1989-08-18 Bouellat Paul Chaudiere verticale pour le chauffage de fluides caloporteurs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212066A1 (de) * 1982-04-01 1983-01-20 Peter 8137 Berg Flögel Oel/gas-spezial-heizkessel
DE3421276A1 (de) * 1983-06-07 1984-12-13 Dieter Joachim 6689 Merchweiler Leinenbach Niedertemperatur-zentralheizungskessel mit kontinuierlich geregelter brennstoffzufuhr
DE3701439C3 (de) * 1987-01-20 1994-07-28 Rolf Bommer Verfahren zum Betreiben eines Heizkessels und nach diesem Verfahren betriebener Heizkessel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514475A1 (fr) * 1981-10-08 1983-04-15 Bonnet Claude Chaudiere de petite puissance pour installations de chauffage
EP0114980A2 (fr) * 1983-01-26 1984-08-08 Feldmühle Aktiengesellschaft Chauffe-eau pour chauffage central
FR2627262A1 (fr) * 1988-02-11 1989-08-18 Bouellat Paul Chaudiere verticale pour le chauffage de fluides caloporteurs

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819137A1 (de) * 1998-04-29 1999-11-11 Deutsch Zentr Luft & Raumfahrt Feuerungsanlage
US10012413B2 (en) 2014-04-15 2018-07-03 Ecr International, Inc. Heat exchanger
CN111433529A (zh) * 2017-11-29 2020-07-17 康德沃公司 热交换单元及方法
CN111433529B (zh) * 2017-11-29 2021-12-31 康德沃公司 热交换单元及方法
US11644246B2 (en) 2017-11-29 2023-05-09 Condevo S.P.A. Heat exchange cell and method
CN111426060A (zh) * 2020-04-28 2020-07-17 西安交通大学 一种采用挤压成型工艺的燃气采暖壁挂炉
CN111426060B (zh) * 2020-04-28 2024-04-12 西安交通大学 一种采用挤压成型工艺的燃气采暖壁挂炉
CN114719328A (zh) * 2022-05-10 2022-07-08 遵义市播州区鑫巨旺节能炉具有限公司 一种液体燃料炉具

Also Published As

Publication number Publication date
DE19581074D2 (de) 1997-11-27
DE19581074C1 (de) 2000-05-31

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