WO2009115447A2 - Appareil de chauffage - Google Patents

Appareil de chauffage Download PDF

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Publication number
WO2009115447A2
WO2009115447A2 PCT/EP2009/052914 EP2009052914W WO2009115447A2 WO 2009115447 A2 WO2009115447 A2 WO 2009115447A2 EP 2009052914 W EP2009052914 W EP 2009052914W WO 2009115447 A2 WO2009115447 A2 WO 2009115447A2
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
flow
combustion chamber
heater according
exchanger tubes
Prior art date
Application number
PCT/EP2009/052914
Other languages
German (de)
English (en)
Other versions
WO2009115447A3 (fr
Inventor
Juergen Rollmann
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to US12/922,388 priority Critical patent/US20110114086A1/en
Priority to EP09721574A priority patent/EP2507562A2/fr
Publication of WO2009115447A2 publication Critical patent/WO2009115447A2/fr
Publication of WO2009115447A3 publication Critical patent/WO2009115447A3/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
    • 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
    • F24H1/403—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes the water tubes being arranged in one or more circles around the burner

Definitions

  • the invention relates to a heater, in particular a condensing boiler, according to the preamble of claim 1.
  • Generic heaters are fired with a gas or oil burner and have a cylindrical combustion chamber, which known devices are usually limited radially by a helically coiled heat exchanger. At least one gap between the coiled tubing for the passage of the hot gases represents the actual heat exchanger surface. Also common are a front cover member for receiving the burner, a rear cover element as a closure for the combustion chamber, supply and return connection pieces and a Abgassammeiraum, which radially outside the heat exchanger arranged under a surrounding jacket and provided with a connection piece for an exhaust pipe. With regard to the heating water-side flow guide, it is a forced-flow heat exchanger. A circulation pump ensures a given water volume flow through the mostly relatively narrow water channels. In this way, despite small
  • DE 10 2004 023 711 B3 likewise shows a heating device with a helically coiled heat exchanger and at least two helically connected helix regions. These are formed differently in diameter and can be arranged helically rotated into each other. The exhaust gas thus flows first through the gaps of the inner coil and then over a gap further through the gaps in the outer coil. Because a one-piece tube, in particular square tube, is also used in this embodiment, it is hardly possible in terms of production technology to influence the gap geometry.
  • the invention is based on the object, the heat exchanger of a heater, in particular a condensing boiler, especially with regard to compact as possible
  • the heater consisting of a cylindrical combustion chamber and a heat exchanger which delimits these heat exchangers is characterized in that the heat exchanger consists of a plurality of annularly arranged, parallel to the longitudinal axis of the combustion chamber heat exchanger tubes. In each case between two adjacent heat exchanger tubes an axially extending gap of preferably only 0.5 mm to 2 mm width is formed for the passage of hot gases in the radial direction.
  • the cross section of the heat exchanger tubes is round, oval or flattened in the radial direction to increase the gap length.
  • the heat exchanger tubes may also have a box-shaped and / or trapezoidal cross-section in order to provide a particularly large heat transfer area in the gap area.
  • the heat exchanger tubes are flowed through on the water side in parallel from one end face to the other.
  • the return connection port is mounted in one cover element and the flow connection in the other. The heating medium is thus distributed evenly in the cover elements to all channels in the heat exchanger tubes or collected at the outlet of these.
  • all the heat exchanger tubes are hydraulically connected in series via end-side deflection zones, so that in the front and / or rear cover element a deflection of the flow into the respectively adjacent heat exchanger tube takes place. This results in a total of a relatively long flow path between the return and supply connection piece with relatively high flow rates.
  • the heat exchanger tubes are flowed through in an alternating sequence on the circumference with flow and return water.
  • a deflection of the flow Either from a first, cooler return water leading, leading to an adjacent, warmer flow water heat exchanger tube, ie in each case a U-shaped flow guide via two pipes with flow and return connection pipe in a cover element. Or it is guided over a common deflection space, the flow of all return water leading heat exchanger tubes to all flow water leading heat exchanger tubes.
  • the heat exchanger tubes are each divided into at least two flow channels.
  • at least two flow channels through at least one partition wall, namely an inner, near the combustion chamber flow channel and at least one outer, larger diameter flow channel.
  • the at least two flow channels can be hydraulically connected to one another within a heat exchanger tube, so that, starting from an end-side water distribution space, the outer, larger diameter flow channel is first flowed through with cooler return water in parallel with the inner, combustion chamber-near flow channel with warmer supply water. It creates a parallel flow through all the individual heat exchanger tubes over the entire circumference.
  • all flow channels in all heat exchanger tubes can be hydraulically connected in series via front-side deflection zones, so that a chaining of all flow channels results.
  • all outer combustion chamber remote flow channels and in each case all inner, combustion chamber near flow channels are connected in series. This ensures that first, starting from the return connection piece in a cover element, all the outer flow channels are annularly passed through and then all the inner flow channels are passed through in a ring shape in succession. Between the resulting inner and outer water rings then only a single overflow in a cover element is necessary. Otherwise, within the cover elements in this case the flow is diverted only from one heat exchanger tube to the next adjacent on the same circumference.
  • the flow exits at an end face in each case from an outer, remote from the combustion chamber flow channel of a first heat exchanger tube and into the inner, close to the combustion chamber flow channel of the next adjacent heat exchanger tube. At the other end face, the flow exits from the inner flow channel of this heat exchanger tube and flows into the outer end
  • the inner, near the combustion chamber flow channel in a heat exchanger tube has a smaller cross-section than the outer, combustion chamber distant Flow channel.
  • the inner, near the combustion chamber near the flow channel in a heat exchanger tube is preferably dimensioned so that set higher flow velocities than in the outer, combustion chamber remote flow channel.
  • the geometry of the gap for the passage of hot gases between the heat-transferring surfaces delimiting the gap can be influenced by the forming process during the production of a heat exchanger tube.
  • one or two adjacent opposing gap-defining surfaces may be provided with projections defining the gap width and supported on each other and / or on the opposite surface.
  • the drawing shows an embodiment of the invention. It shows a heat exchanger of a heater:
  • Fig. 1 In an overall perspective view with a section in the corner and
  • Fig. 2 individual parts in an exploded view.
  • a cylindrical combustion chamber 1 is bounded radially by a heat exchanger, which has at least one gap 2 for the passage of hot gases.
  • a front cover element 3 for receiving a burner, not shown, and a rear cover element 4 serve as a closure for the combustion chamber 1.
  • An exhaust gas collection chamber 5 is located below a surrounding jacket, not shown, with a connecting piece for an exhaust line radially outside the heat exchanger.
  • the heat exchanger consists of a plurality of annularly arranged, with the longitudinal axis of the combustion chamber 1 parallel heat exchanger tubes 6 with a trapezoidal cross-section, which each form an axially extending gap 2 for the passage of hot gases in the radial direction.
  • the heat exchanger tubes 6 are each divided by a partition wall 7 in an inner, near the combustion chamber flow channel 8 and an outer, larger diameter flow channel 9.
  • all the flow channels 8, 9 in all heat exchanger tubes 6 are hydraulically connected in series via end-face deflection zones 10, so that a chaining of all flow channels 8, 9 between the rear and rear
  • annular covers 11 are mounted on the cover elements 3, 4, and receptacles 12 are formed for the heat exchanger tubes, which engage inside them, thus centering them on the front side and providing a good sealable overlapping area in the connection area.
  • cover elements 3, 4 are each a circumferential, after inwardly directed groove 13 for receiving the exhaust gas collecting space 5 surrounding cylindrical shell.

Abstract

L’invention concerne un appareil de chauffage, en particulier un appareil de chauffage à pouvoir calorifique, comprenant un brûleur à gaz ou à mazout dans une chambre de combustion cylindrique (1), laquelle est délimitée radialement par un échangeur thermique ; au moins une fente (2) pour le passage d’un gaz de chauffage à travers l’échangeur thermique dans une chambre de collecte de gaz d’échappement (5) disposée radialement à l’extérieur de l’échangeur thermique, laquelle présente une enveloppe environnante avec une tubulure de raccordement pour une conduite de gaz d’échappement ; un élément de couverture avant (3) pour réceptionner le brûleur ; un élément de couverture arrière (4) en guise de fermeture pour la chambre de combustion (1) ; ainsi que des tubulures de raccordement d’admission et de reflux. L’invention a pour but d’optimiser l’échangeur thermique d’un appareil de chauffage, en particulier d’un appareil de chauffage à pouvoir calorifique, en particulier en termes de dimensions compactes autant que possible et de propriétés de transmission thermique satisfaisantes. L’invention se caractérise en ce que l’échangeur thermique se compose de plusieurs tuyaux d’échangeur thermique (6) disposés de manière annulaire et parallèles à l’axe longitudinal de la chambre de combustion (1), lesquels forment respectivement une fente s’étendant axialement (2) entre deux tuyaux d’échangeur thermique adjacents (6), pour permettre le passage de gaz de chauffage dans une direction radiale.
PCT/EP2009/052914 2008-03-15 2009-03-12 Appareil de chauffage WO2009115447A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/922,388 US20110114086A1 (en) 2008-03-15 2009-03-12 Heating device
EP09721574A EP2507562A2 (fr) 2008-03-15 2009-03-12 Appareil de chauffage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008014523.8 2008-03-15
DE102008014523A DE102008014523A1 (de) 2008-03-15 2008-03-15 Heizgerät

Publications (2)

Publication Number Publication Date
WO2009115447A2 true WO2009115447A2 (fr) 2009-09-24
WO2009115447A3 WO2009115447A3 (fr) 2012-10-18

Family

ID=40953118

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/052914 WO2009115447A2 (fr) 2008-03-15 2009-03-12 Appareil de chauffage

Country Status (5)

Country Link
US (1) US20110114086A1 (fr)
EP (1) EP2507562A2 (fr)
DE (1) DE102008014523A1 (fr)
RU (1) RU2010141583A (fr)
WO (1) WO2009115447A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20160198A1 (it) * 2016-01-18 2017-07-18 Worgas Bruciatori Srl Gruppo bruciatore – scambiatore di calore per un motore a combustione esterna
CN105698387A (zh) * 2016-04-12 2016-06-22 罗欣奎 一种燃气全预混冷凝式壁挂炉的环形热交换器
CN110822714B (zh) * 2019-11-01 2020-10-30 西安交通大学 一种窄间隙燃烧及换热的燃气冷凝锅炉
CN114562813A (zh) * 2020-12-31 2022-05-31 日照亚创电子科技有限公司 一种可充分利用余热的燃气锅炉及使用方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476808A1 (fr) * 1980-02-22 1981-08-28 Sdecc Echangeur de chaleur formant barriere anti-deflagration pour chaudieres domestiques de chauffage central
EP0350388A1 (fr) * 1988-07-05 1990-01-10 Chaffoteaux & Maury Perfectionnements aux appareils de production d'eau chaude
DE29602990U1 (de) * 1995-02-06 1996-04-04 Vaillant Joh Gmbh & Co Wasserheizer
EP0813037A1 (fr) * 1996-05-31 1997-12-17 VIESSMANN WERKE GmbH & CO. Echangeur de chaleur, en particulier pour une chaudière
EP1050721A1 (fr) * 1999-05-04 2000-11-08 Guillot Industrie Echangeur de chaleur destiné à équiper une chaudière à eau chaude

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US2028456A (en) * 1935-05-07 1936-01-21 Karmazin Engineering Company Refrigerating apparatus
US2181927A (en) * 1936-04-03 1939-12-05 Albert J Townsend Heat exchanger and method of making same
JPS57202491A (en) * 1981-06-08 1982-12-11 Toshiba Corp Heat exchanger
AU751139B2 (en) * 1997-10-13 2002-08-08 Astellas Pharma Inc. Amide derivative
CA2305802C (fr) * 1997-10-17 2008-11-18 Yamanouchi Pharmaceutical Co., Ltd. Derives amides ou sels desdits derives
TW200505894A (en) * 2003-08-08 2005-02-16 Yamanouchi Pharma Co Ltd Tetrahydro-2H-thiopyran-4-carboxamide derivative
GB0324269D0 (en) * 2003-10-16 2003-11-19 Pharmagene Lab Ltd EP4 receptor antagonists
DE102004023711B3 (de) 2004-05-11 2005-10-13 Viessmann Werke Gmbh & Co Kg Heizgerät
DE202005011633U1 (de) 2005-07-20 2006-11-30 Viessmann Werke Gmbh & Co Kg Heizgerät
DE102006004900A1 (de) * 2006-02-03 2007-08-16 Viessmann Werke Gmbh & Co Kg Heizgerät
DE102006029854A1 (de) 2006-06-27 2008-01-03 Mhg Heiztechnik Gmbh Wärmetauscher mit ringförmig ausgebildeten Strömungskanälen
DE102007060508A1 (de) * 2007-12-15 2009-06-18 Robert Bosch Gmbh Wärmetauscher für ein Heizgerät
DE102008013086A1 (de) * 2008-03-07 2009-09-10 Robert Bosch Gmbh Gliederheizkessel aus Gusseisen oder Aluminium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476808A1 (fr) * 1980-02-22 1981-08-28 Sdecc Echangeur de chaleur formant barriere anti-deflagration pour chaudieres domestiques de chauffage central
EP0350388A1 (fr) * 1988-07-05 1990-01-10 Chaffoteaux & Maury Perfectionnements aux appareils de production d'eau chaude
DE29602990U1 (de) * 1995-02-06 1996-04-04 Vaillant Joh Gmbh & Co Wasserheizer
EP0813037A1 (fr) * 1996-05-31 1997-12-17 VIESSMANN WERKE GmbH & CO. Echangeur de chaleur, en particulier pour une chaudière
EP1050721A1 (fr) * 1999-05-04 2000-11-08 Guillot Industrie Echangeur de chaleur destiné à équiper une chaudière à eau chaude

Also Published As

Publication number Publication date
EP2507562A2 (fr) 2012-10-10
WO2009115447A3 (fr) 2012-10-18
DE102008014523A1 (de) 2009-09-17
US20110114086A1 (en) 2011-05-19
RU2010141583A (ru) 2012-04-20

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