EP2123991B1 - Fired heat exchanger - Google Patents

Fired heat exchanger Download PDF

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Publication number
EP2123991B1
EP2123991B1 EP08009326A EP08009326A EP2123991B1 EP 2123991 B1 EP2123991 B1 EP 2123991B1 EP 08009326 A EP08009326 A EP 08009326A EP 08009326 A EP08009326 A EP 08009326A EP 2123991 B1 EP2123991 B1 EP 2123991B1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
combustion chamber
panel plates
stage
working
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.)
Active
Application number
EP08009326A
Other languages
German (de)
French (fr)
Other versions
EP2123991A1 (en
Inventor
Tomasz Siemienczuk
Lukasz BADZIAGOWSKI
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.)
AIC SA
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AIC SA
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 AIC SA filed Critical AIC SA
Priority to ES08009326T priority Critical patent/ES2381216T3/en
Priority to DK08009326.3T priority patent/DK2123991T3/en
Priority to PL08009326T priority patent/PL2123991T3/en
Priority to AT08009326T priority patent/ATE543055T1/en
Priority to EP08009326A priority patent/EP2123991B1/en
Publication of EP2123991A1 publication Critical patent/EP2123991A1/en
Application granted granted Critical
Publication of EP2123991B1 publication Critical patent/EP2123991B1/en
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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

Definitions

  • the invention described here is a fired heat exchanger designed to be best used in boilers and pre-heaters.
  • EP-A-1 184 628 disclosed a heat exchanger which has a row of plates forming hollow chambers for a heating medium and intermediate chambers for a heating gas flue.
  • the plates form a modular body with integrated chamber for a burner. Heating medium chambers and heating gas chambers alternate with each other. One plate has flow surfaces for the heating gas and the other one has flow surfaces for the heating medium.
  • a fired heat exchanger comprising a modular block of panel plates connected inseparably together, whereas each panel plate is made of two plate members connected inseparably one with another and creating in one side a combustion chamber and in its other side is integrated with a working heat exchange surface for hot gases, said heat exchange is created by a surface of one of the plate members together with protrusions is characterized in that the combustion chamber is in the upper part of the plate members and is surrounded in its upper side with a water jacket and in its lower side integrated with the working heat exchange surface, said heat exchange surface has creased bands mounted thereon, and the circulation of the liquid heated medium in the unit of panel plates has a medium flow velocity within the range 0.5 - 2 m/s and is of a two stage - type, wherein during the first stage, the main process of heat exchange on the working surface takes palace and during the second stage the combustion chamber is cooled by the water jacket.
  • This layout ensures full integration of the combustion chamber with the working heat exchange surface located in the lower part of the panel plates.
  • the working heat exchange surface is created by the lower lateral sides of the panel plates and the creased bands mounted on them.
  • the bands expand the working heat exchange surface and the gasses created in the combustion chamber flow around this surface.
  • the circulation of the liquid heated medium in the unit of interconnected panel plates has a flow velocity of the medium within the range of 0.5 - 2 m/s and is of a two-stage type. During the first stage, the main process of heat exchange on the working surface takes place. During the second stage, the combustion chamber is cooled by the water jacket, constituting the upper part of panel plates.
  • the structure of the fired heat exchanger ensures full integration of the combustion chamber with the working heat exchange surface, which provides effective cooling for the combustion chamber and a sample compact build obviating the need for additional closing elements.
  • High thermal efficiency has been achieved by means of specially shaped creased bands filling the space between panel plates expanding the working heat exchange surface, which provides the possibility for combustion product condensation and turbulence.
  • the vital advantage of this solution is the high heat exchange surface to weight ratio.
  • This new invention facilitates power scaling by adding or removing additional panel plates and utilising a condensation technique enabling the unit to use less fuel and emit smaller amounts of detrimental compounds to the air. Thanks to this, the device is ecologically efficient. Another important advantage of this solution is the simplified production technology with the possibility of using full automation.
  • Fig.1 shows the perspective view of the fired heat exchanger with a partial pre-installation setting-up of the heat exchanger part
  • Fig. 2 shows the perspective view of the heat exchanger elements set which, having been connected, create a panel plate together with a creased band mounted on the lateral surface
  • Fig. 3 shows the axonometric view of the panel plate together with the creased band.
  • the invented fired heat exchanger described in this document contains a modular block constituting a set of inseparably interconnected panel plates 1 with a combustion chamber water jacket 4 located in its upper part and the working heat exchange surface in the lower part. These surfaces create the lower lateral surfaces 5 of the panel plates 1 together with the creased bands 3 mounted on them. They expand the working heat exchange surface and the gasses created in the combustion chamber flow around this surface.
  • the circulation of the liquid heated medium in the unit of interconnected panel plates has a flow velocity with a medium within the range 0.5 - 2 m/s. It is two-stage type: during the first stage, the main process of heat exchange on the working surface takes place, while during the second stage, the combustion chamber 2 is cooled by the water jacket 4 constituting the upper part of the panel plates 1.

Abstract

The fired heat exchanger is characterised by the fact that it contains a modular block constituting a set of inseparably interconnected panel plates (1) with a combustion chamber located in its upper internal part (2) ensuring full integration of the combustion chamber (2) with the working heat exchange surface located in the lower part of the panel plates (1). This surface is created by the lower lateral surfaces of the panel plates (1) together with chattered lamella bands mounted on them (3). They expand the working heat exchange surface and the gasses created in the combustion chamber (2) flow around this surface. The circulation of the liquid heated medium in the unit of interconnected panel plates (1) has a medium flow velocity within the range 0.5 - 2 m/s and is of a two-stage type. During the first stage, the main process of heat exchange on the working surface takes place. During the second stage, the combustion chamber (2) is cooled by the water jacket constituting the upper part of the panel plates (1).

Description

  • The invention described here is a fired heat exchanger designed to be best used in boilers and pre-heaters.
  • Taking into account the current state of technology, there are well-known and widely utilized fired heat exchanger solutions where the combustion chambers and working surfaces for heat exchange consist of multiple elements, which makes their structure more complicated, rendering their construction and installation difficult. This solution results in a lower heat exchange surface to weight ratio and larger overall dimensions while maintaining the same heat exchanger rate.
  • An example of such a solution is a heat exchanger manufactured by the German Viessman company. Its structure features a cylindrical casing combustion chamber to which specially creased plates have been welded. These plates constitute the working heat exchange surface creating reciprocally parallel layers separated from each other. The media taking part in the heat exchange process flow around the layers in a countercurrent direction.
  • EP-A-1 184 628 disclosed a heat exchanger which has a row of plates forming hollow chambers for a heating medium and intermediate chambers for a heating gas flue. The plates form a modular body with integrated chamber for a burner. Heating medium chambers and heating gas chambers alternate with each other. One plate has flow surfaces for the heating gas and the other one has flow surfaces for the heating medium.
  • Another disadvantage of this current solution is the necessity to weld the plates to the combustion chamber in order to ensure their full integration. Moreover, the whole structure must also be housed in a specially designed casing in order to ensure sealing and properly directed flow of the medium among the plates.
  • According to the invention a fired heat exchanger comprising a modular block of panel plates connected inseparably together, whereas each panel plate is made of two plate members connected inseparably one with another and creating in one side a combustion chamber and in its other side is integrated with a working heat exchange surface for hot gases, said heat exchange is created by a surface of one of the plate members together with protrusions is characterized in that the combustion chamber is in the upper part of the plate members and is surrounded in its upper side with a water jacket and in its lower side integrated with the working heat exchange surface, said heat exchange surface has creased bands mounted thereon, and the circulation of the liquid heated medium in the unit of panel plates has a medium flow velocity within the range 0.5 - 2 m/s and is of a two stage - type, wherein during the first stage, the main process of heat exchange on the working surface takes palace and during the second stage the combustion chamber is cooled by the water jacket.
  • This layout ensures full integration of the combustion chamber with the working heat exchange surface located in the lower part of the panel plates. The working heat exchange surface is created by the lower lateral sides of the panel plates and the creased bands mounted on them. The bands expand the working heat exchange surface and the gasses created in the combustion chamber flow around this surface. The circulation of the liquid heated medium in the unit of interconnected panel plates has a flow velocity of the medium within the range of 0.5 - 2 m/s and is of a two-stage type. During the first stage, the main process of heat exchange on the working surface takes place. During the second stage, the combustion chamber is cooled by the water jacket, constituting the upper part of panel plates.
  • According to the invention, the structure of the fired heat exchanger ensures full integration of the combustion chamber with the working heat exchange surface, which provides effective cooling for the combustion chamber and a sample compact build obviating the need for additional closing elements. High thermal efficiency has been achieved by means of specially shaped creased bands filling the space between panel plates expanding the working heat exchange surface, which provides the possibility for combustion product condensation and turbulence. The vital advantage of this solution is the high heat exchange surface to weight ratio.
  • This new invention facilitates power scaling by adding or removing additional panel plates and utilising a condensation technique enabling the unit to use less fuel and emit smaller amounts of detrimental compounds to the air. Thanks to this, the device is ecologically efficient. Another important advantage of this solution is the simplified production technology with the possibility of using full automation.
  • The invention is shown pictorially, where Fig.1 shows the perspective view of the fired heat exchanger with a partial pre-installation setting-up of the heat exchanger part, while Fig. 2 shows the perspective view of the heat exchanger elements set which, having been connected, create a panel plate together with a creased band mounted on the lateral surface. Fig. 3 shows the axonometric view of the panel plate together with the creased band.
  • The invented fired heat exchanger described in this document contains a modular block constituting a set of inseparably interconnected panel plates 1 with a combustion chamber water jacket 4 located in its upper part and the working heat exchange surface in the lower part. These surfaces create the lower lateral surfaces 5 of the panel plates 1 together with the creased bands 3 mounted on them. They expand the working heat exchange surface and the gasses created in the combustion chamber flow around this surface. The circulation of the liquid heated medium in the unit of interconnected panel plates has a flow velocity with a medium within the range 0.5 - 2 m/s. It is two-stage type: during the first stage, the main process of heat exchange on the working surface takes place, while during the second stage, the combustion chamber 2 is cooled by the water jacket 4 constituting the upper part of the panel plates 1.

Claims (1)

  1. A fired heat exchanger comprising a modular block of panel plates connected inseparably together, whereas each panel plate (1) is made of two plate members (1a, 1b) connected inseparably one with another and creating in one side a combustion chamber (2) and in its other side is integrated with a working heat exchange surface for hot gases, said heat exchange is created by a surface of one of the plate members (1a) together with protrusions, characterized in that the combustion chamber (2) is in the upper part of the plate members (1a, 1b) and is surrounded in its upper side with a water jacket (4) and in its lower side integrated with the working heat exchange surface, said heat exchange surface has creased bands (3) mounted thereon, and the circulation of the liquid heated medium in the unit of panel plates (1) has a medium flow velocity within the range 0.5 - 2 m/s and is of a two stage - type, wherein during the first stage, the main process of heat exchange on the working surface takes palace and during the second stage the combustion chamber (2) is cooled by the water jacket (4).
EP08009326A 2008-05-20 2008-05-20 Fired heat exchanger Active EP2123991B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES08009326T ES2381216T3 (en) 2008-05-20 2008-05-20 Heat exchanger with combustion chamber
DK08009326.3T DK2123991T3 (en) 2008-05-20 2008-05-20 Combustion heat exchanger
PL08009326T PL2123991T3 (en) 2008-05-20 2008-05-20 Fired heat exchanger
AT08009326T ATE543055T1 (en) 2008-05-20 2008-05-20 HEAT EXCHANGER WITH COMBUSTION CHAMBER
EP08009326A EP2123991B1 (en) 2008-05-20 2008-05-20 Fired heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08009326A EP2123991B1 (en) 2008-05-20 2008-05-20 Fired heat exchanger

Publications (2)

Publication Number Publication Date
EP2123991A1 EP2123991A1 (en) 2009-11-25
EP2123991B1 true EP2123991B1 (en) 2012-01-25

Family

ID=40671035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08009326A Active EP2123991B1 (en) 2008-05-20 2008-05-20 Fired heat exchanger

Country Status (5)

Country Link
EP (1) EP2123991B1 (en)
AT (1) ATE543055T1 (en)
DK (1) DK2123991T3 (en)
ES (1) ES2381216T3 (en)
PL (1) PL2123991T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL216290B1 (en) 2010-10-01 2014-03-31 Aic Społka Akcyjna Heat exchanger
US8813688B2 (en) 2010-12-01 2014-08-26 Aic S.A. Heat exchanger
WO2016010500A1 (en) * 2014-07-16 2016-01-21 Zümrüt Ali Combi boiler with heat exchanger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE764949A (en) * 1970-04-04 1971-08-16 Riello Pilade SHEET ELEMENT FOR GAS BOILER
NL8802695A (en) * 1988-11-03 1990-06-01 Rendamax Bv Plate-type heat exchanger - has hollow distance-pieces between plates forming conduits for medium
DE10043283A1 (en) 2000-09-02 2002-03-14 Bosch Gmbh Robert Heat exchanger for a boiler, especially for a condensing boiler

Also Published As

Publication number Publication date
EP2123991A1 (en) 2009-11-25
PL2123991T3 (en) 2012-07-31
DK2123991T3 (en) 2012-05-21
ES2381216T3 (en) 2012-05-24
ATE543055T1 (en) 2012-02-15

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