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EP2395294A2 - Chaudière sectionnable - Google Patents

Chaudière sectionnable Download PDF

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Publication number
EP2395294A2
EP2395294A2 EP11168881A EP11168881A EP2395294A2 EP 2395294 A2 EP2395294 A2 EP 2395294A2 EP 11168881 A EP11168881 A EP 11168881A EP 11168881 A EP11168881 A EP 11168881A EP 2395294 A2 EP2395294 A2 EP 2395294A2
Authority
EP
European Patent Office
Prior art keywords
region
boiler according
sectional boiler
flow
water
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP11168881A
Other languages
German (de)
English (en)
Other versions
EP2395294A3 (fr
EP2395294B1 (fr
Inventor
Gerhard Jung
Christian Buchczyk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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
Publication of EP2395294A2 publication Critical patent/EP2395294A2/fr
Publication of EP2395294A3 publication Critical patent/EP2395294A3/fr
Application granted granted Critical
Publication of EP2395294B1 publication Critical patent/EP2395294B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24H1/24—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
    • F24H1/30—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 being built up from sections
    • F24H1/32—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 being built up from sections with vertical sections arranged side by side
    • 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
    • F24H9/0015—Guiding means in water channels
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/146—Connecting elements of a heat exchanger
    • 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
    • F28D7/005—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 for only one medium being tubes having bent portions or being assembled from bent tubes or being tubes having a toroidal configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2230/00—Sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded

Definitions

  • the invention relates to a sectional boiler, in particular a condensing boiler made of cast iron or aluminum materials, according to the preamble of claim 1.
  • Such sectional boiler consist of several integrally cast boiler members, which are arranged one behind the other and water side connected by hubs.
  • the water channels and pockets formed by the boiler members are flowed through between the return connection and the supply connection.
  • generic sectional heating boilers have a lower return connection and a top feed connection, preferably in the respective hub.
  • the hot gases flow from the combustion chamber via downstream hot gas flues to an exhaust gas outlet and release heat to the boiler water on their way.
  • the links are arranged in series one behind the other.
  • the combustion chamber extends through the front and middle links to the rear link, which forms the bottom of the combustion chamber with its lid-shaped design.
  • All of the boiler members have similar external dimensions in these embodiments because they form parts of the combustion chamber, Schugastecn and water space over the entire boiler cross-section.
  • boilers for low power ranges are known, which consist of only two or even only one boiler member.
  • heating value technology With regard to the exhaust system and the efficiency of the heaters, a distinction is made between heating value technology and condensing boiler technology. For reasons of energy saving more and more condensing boilers are used.
  • the design of their heat exchanger provides the opportunity to cool the resulting in the combustion of fuel and air moist exhaust gases below the Abgastauddling. The moisture of the exhaust gases condenses and in addition to the sensible heat, the heat of condensation is transferred to the heating water.
  • the heat exchangers of conventional calorifiers are often made of cast iron. They are characterized by high robustness and long life. Their construction of mostly identical casting segments allows cost-effective production and easy scalability with regard to different output sizes and offers good mounting options even under tight installation conditions. The material endures the short exhaust gas condensation phases very well at startup and cold heat exchanger. Only for condensing operation with a prolonged accumulation of condensation is cast iron in its present form and design not suitable.
  • the invention has the object to optimize a sectional boiler made of cast iron or aluminum, in particular with regard to compactness and robustness.
  • the sectional boiler is characterized in that the heat exchanger has as heating flues in each case annular gaps between two adjacent members with an associated geometry, each extending from the combustion chamber approximately radially outwards and open into an exhaust gas collecting space on the outside of the links.
  • the individual members are flowed through serially on the heating water side, wherein the return water first enters the rear link via the return connection. Then, an overflow into an adjacent member in the region of the upper hubs, because the lower hubs are sealed from each other.
  • sealing means are provided for heating water-side sealing of the lower hubs against each other in the direct area of the respective hubs or between the hubs of two adjacent links.
  • sealing washers can be inserted in the joints.
  • the links are each hydraulically provided with overflow openings only at one point on the circumference and connected to these on at least one side with an adjacent member.
  • This overflow serve as a hydraulic connection in the respective adjacent member.
  • at least one flow-guiding means is arranged in the water space, inter alia also for achieving a low pressure loss during the flow deflection.
  • a flow-guiding means preferably exists in the connection region of the water space from a substantially transverse to the water space, approximately vertically aligned with the axis of the connecting portion wall which closes the respective flow channel in a member and the incoming flow from the axial direction in the circumferential direction and the exiting flow from the circumferential to the axial direction adjacent member directs.
  • a flow directing means in the form of a water space transversely dividing, approximately vertically aligned to the axis of the connecting region wall is arranged at an angle of 30 to 50 degrees obliquely in the respective flow channel of a member.
  • the flow channel is in the region of the upper hub above the overflow and leads the flow of water from the upper region of the front member to the flow connection in the rear member.
  • each member as a flow channel in the region of the upper hub with each other corresponding, axially aligned and sealed to the rest of the water space openings.
  • a pipe is provided as a flow channel in the region of the upper hub, which also serves as a traction means for bracing the members. Therefore, it has a thread on the flow connection and is provided with a flange-like beading edge on one side, which rests against an associated surface in the region of the upper hub of the front element.
  • a screw may be provided as a tensioning means for bracing the links.
  • the screw is arranged as a traction means within the lower hub and optionally has a sealing means for sealing the adjacent links. This may for example be a blocking element fixed thereto.
  • the screw is arranged as a traction means within the upper hub below the flow channel in the region of the overflow openings, wherein the screw itself optionally has and carries flow guidance means and / or otherwise engages with the screw attached to the limbs Strömungsleitstoff.
  • a sectional boiler with the best suitability for condensing operation is created in which the positive material properties of cast iron or aluminum are selectively applied and used to ensure good heat transfer properties, compactness and robustness. There are minimized corrosion-triggering operating conditions and loads by the inventive water supply.
  • the temperature distribution in the heat exchanger is optimized and increased the effectiveness over known principles.
  • a corrosion protection coating according to the invention is not only easy to apply and to control, but it is also protected in the gaps from possible mechanical stresses.
  • the sectional construction also offers the advantage of being able to variably cover different lengths for different combustion and heat exchanger capacities by inserting further center elements. Nevertheless, then remain all front-mounted attachments and the water-side connections the same, because all water-side connections are easily accessible on the back, so in the rear member. Only the surrounding cylindrical shell around the exhaust gas collection chamber varies. Because of the low exhaust gas temperatures, this can even be made of plastic.
  • the sectional boiler consists essentially of annular members, namely a front member 1, a lid-shaped rear member 2 and a plurality of middle members 3. These form a combustion chamber 4 and each have annular water spaces 5, 5 ', 5 ". They communicate with each other via an upper and lower hub 6, 6'.
  • the heat exchanger formed by the block member has as Walkergasfeld respectively annular column 7 between two adjacent members 1, 2, 3 with an associated geometry, each extending from the combustion chamber 4 approximately radially outwards and in a non-illustrated, outside the members 1, 2, 3 embrace exhaust gas collection chamber.
  • the members 1, 2, 3 are serially flowed through the heating water side, wherein return water passes through the return port RL in the rear member 2 and then an overflow takes place in an adjacent member 3 of this or the next member 3 in the region of the upper hub 6. After respective circulation in the members 3, the heating medium then passes into the front member 1.
  • the lower hubs 6 ' are each sealed against each other, so that the front member 1 and the at least one central member 3 always, starting from the upper hub 6, are flowed through annularly , From the front member 1, in particular from the upper region, supply water is guided through a to the surrounding water space 5, 5 ', 5 "sealed flow channel 8 from the upper region of the front member 1 to the flow connection VL in the rear member 2.
  • sealing means 9 here drawn as sealing disks, for heating water-side sealing of the hubs 6' against each other.
  • the members 1, 2, 3 are each hydraulically provided with overflow openings 10 as connection in the respective adjacent member 1, 2, 3 only at one point on the circumference.
  • the flow channel 8 in the region of the upper hub 6 is arranged above the overflow openings 10 and leads the flow of water from the upper region of the front member 1 to the flow connection VL in the rear member 2 from.
  • a tube 13 which at the same time as a traction means for bracing the members 1, 2, 3, at the flow connection VL not shown in detail has a thread and is provided with a bead 14 on one side, which rests against an associated surface in the region of the upper hub 6 of the front member 1.
  • the supply channel 8 is formed in the region of the upper hub 6 by mutually corresponding, axially aligned and to the remaining water space 5, 5 ', 5 "sealed openings 12, which each member 1, 2, 3 has.
  • 6 ' is a screw 15 as a traction means for bracing the members 1, 2, 3.
  • This screw 15 is disposed within the lower hub and may optionally also the sealing means 9 for sealing the adjacent members 1, 2, 3 wear.

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)
  • Details Of Fluid Heaters (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP11168881.8A 2010-06-11 2011-06-07 Chaudière sectionnable Not-in-force EP2395294B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010023556A DE102010023556A1 (de) 2010-06-11 2010-06-11 Gliederheizkessel

Publications (3)

Publication Number Publication Date
EP2395294A2 true EP2395294A2 (fr) 2011-12-14
EP2395294A3 EP2395294A3 (fr) 2015-09-23
EP2395294B1 EP2395294B1 (fr) 2017-01-11

Family

ID=44118288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11168881.8A Not-in-force EP2395294B1 (fr) 2010-06-11 2011-06-07 Chaudière sectionnable

Country Status (2)

Country Link
EP (1) EP2395294B1 (fr)
DE (1) DE102010023556A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018206574A1 (de) * 2018-04-27 2019-10-31 Mahle International Gmbh Stapelscheibenwärmetauscher

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29621817U1 (de) 1996-12-16 1997-03-13 Buderus Heiztechnik Gmbh, 35576 Wetzlar Heizkessel für Brennwertbetrieb
DE4425302C2 (de) 1994-07-18 1998-08-06 Buderus Heiztechnik Gmbh Gußeiserner Gliederheizkessel
DE102004023711B3 (de) 2004-05-11 2005-10-13 Viessmann Werke Gmbh & Co Kg Heizgerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1809073A1 (de) * 1968-11-15 1970-06-11 Strebelwerk Gmbh Sammelheizungskessel
DE102004061824B3 (de) * 2004-12-22 2006-08-10 Robert Bosch Gmbh Gliederheizkessel
DE102008013086A1 (de) * 2008-03-07 2009-09-10 Robert Bosch Gmbh Gliederheizkessel aus Gusseisen oder Aluminium
DE102008037762A1 (de) * 2008-08-14 2010-02-18 Robert Bosch Gmbh Gliederheizkessel aus Gusseisen oder Aluminium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425302C2 (de) 1994-07-18 1998-08-06 Buderus Heiztechnik Gmbh Gußeiserner Gliederheizkessel
DE29621817U1 (de) 1996-12-16 1997-03-13 Buderus Heiztechnik Gmbh, 35576 Wetzlar Heizkessel für Brennwertbetrieb
DE102004023711B3 (de) 2004-05-11 2005-10-13 Viessmann Werke Gmbh & Co Kg Heizgerät

Also Published As

Publication number Publication date
DE102010023556A1 (de) 2011-12-15
EP2395294A3 (fr) 2015-09-23
EP2395294B1 (fr) 2017-01-11

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