WO2020053010A1 - Échangeur de chaleur à gaz de combustion et dispositif de chauffage équipé d'un échangeur de chaleur à gaz de combustion - Google Patents

Échangeur de chaleur à gaz de combustion et dispositif de chauffage équipé d'un échangeur de chaleur à gaz de combustion Download PDF

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Publication number
WO2020053010A1
WO2020053010A1 PCT/EP2019/073321 EP2019073321W WO2020053010A1 WO 2020053010 A1 WO2020053010 A1 WO 2020053010A1 EP 2019073321 W EP2019073321 W EP 2019073321W WO 2020053010 A1 WO2020053010 A1 WO 2020053010A1
Authority
WO
WIPO (PCT)
Prior art keywords
flue gas
heat exchanger
section
guide section
gas heat
Prior art date
Application number
PCT/EP2019/073321
Other languages
German (de)
English (en)
Inventor
Uwe Armbruster
Original Assignee
Truma Gerätetechnik GmbH & Co. KG
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 Truma Gerätetechnik GmbH & Co. KG filed Critical Truma Gerätetechnik GmbH & Co. KG
Publication of WO2020053010A1 publication Critical patent/WO2020053010A1/fr

Links

Classifications

    • 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
    • F28D9/0031—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 conduits for one heat-exchange medium being formed by paired plates touching each other
    • 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
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
    • 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
    • F28D1/03—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 with plate-like or laminated conduits
    • F28D1/0308—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 with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/035—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 with plate-like or laminated conduits the conduits being formed by paired plates touching each other with U-flow or serpentine-flow inside the conduits
    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0024—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for combustion apparatus, e.g. for boilers

Definitions

  • the invention relates to a flue gas heat exchanger. Furthermore, the invention relates to a heating device for heating a medium with such a flue gas heat exchanger.
  • Heating devices are known in the prior art which are used, for example, to heat industrial water. Such heaters can also be parts of heaters, so that, for. B. the medium to be heated z. B. is air or a water-glycol mixture.
  • the heaters use in particular burners that, for. B. Burn gas-air mixtures.
  • the flue gas that arises and is ultimately discharged as exhaust gas carries the thermal energy that is transferred to the medium, for example, via so-called flue gas heat exchangers.
  • US Pat. No. 4,938,204 shows a heat exchanger that is placed directly in a container that receives the medium to be heated.
  • a heat exchanger consisting of two housing shells is disclosed, for example, in DE 199 61 133 C1.
  • the object of the invention is to propose a heat exchanger and a heating device with a heat exchanger, which allow the highest possible heat transfer from the flue gas to the medium to be heated.
  • the invention achieves the object by means of a flue gas heat exchanger with a combustion chamber, an exhaust gas outlet and four flue gas guide sections, the combustion chamber being located in a first flue gas guide section, the first flue gas guide section being in a second flue gas guide section angled to the first flue gas guide section merges, the second flue gas duct section merging into a third flue gas duct section angled to the second flue gas duct section, the third flue gas duct section merging into a fourth flue gas duct section angled to the third flue gas duct section, and the fourth flue gas duct section merging into the exhaust gas outlet.
  • the combustion chamber is located in the fourth flue gas guide section, which merges into the third smoke gas guide section.
  • the third flue gas duct section merges into the second flue gas duct section and the second flue gas duct section merges into the first flue gas duct section.
  • the first flue gas routing section merges into the exhaust gas outlet. In this alternative embodiment, the arrangement is reversed.
  • flue gas duct sections are present between the flue gas duct sections or adjacent to them.
  • the flue gas is led only through the four flue gas guide sections mentioned.
  • flue gas guide sections are thus provided, each of which - directly or indirectly - merge into one another and are thereby angled with respect to one another.
  • the bend relates at least to the direction of flow of the flue gas in the respective flue gas guide sections.
  • the effective surface for the emission of the thermal energy of the flue gas is intended to be increased by the flue gas guide sections.
  • the surface temperature of the hot components of the heating device is also reduced. This allows, for example, the use of temperature-sensitive materials (eg EPP foam) for insulation of the heating device.
  • temperature-sensitive materials eg EPP foam
  • One embodiment provides that the combustion chamber and the exhaust gas outlet open onto a common side of the flue gas heat exchanger.
  • first flue gas guiding section is tubular and in a further embodiment has a constant inside diameter.
  • first flue gas duct section merges into the second flue gas duct section at an angle of 90 °.
  • second flue gas duct section merges into the third flue gas duct section at an angle of 90 °.
  • third flue gas duct section merges into the fourth flue gas duct section at an angle of 90 °.
  • the transitions between the flue gas guide sections can each be rounded off or have any shape.
  • the second flue gas guide section has an inner diameter that decreases in a flow direction of the flue gas.
  • the fourth flue gas guide section has an internal diameter that increases in a flow direction of the flue gas.
  • the courses of the inner diameters of the second and fourth flue gas guide sections are, in particular, opposite in relation to the flow direction of the flue gas.
  • One embodiment provides that the first flue gas guide section and the third flue gas guide section run parallel to one another.
  • the third flue gas routing section consists of a plurality of sections.
  • the sections are tubular.
  • the partial sections run parallel to one another.
  • the subsections are so relative to one another that the flue gas passes from the third flue gas routing section into the individual subsections.
  • the first, the second and the fourth flue gas guide section each consist of a tubular element, the majority of the tubular partial sections being arranged between the second and fourth flue gas guide sections.
  • tubular sections each have at least one local - that is locally limited - reduction in an inner diameter.
  • the reductions in the inner diameter serve to prevent or at least reduce a laminar flow of the flue gas.
  • in other flue gas duct sections there are locally limited reductions in the inner diameter.
  • each - preferably tubular - section branches off from the second flue gas guide section via an associated outlet connection point.
  • the majority of the sections branches off from the second flue gas routing section, each with its own connection point.
  • each - preferably tubular - section opens into the fourth flue gas routing section via an associated orifice connection point.
  • the individual sections are not brought together to open into the fourth flue gas guide section via a common connection, but each section opens separately and with its own connection point.
  • the flue gas heat exchanger consists of two housing shells.
  • the two housing shells are designed symmetrically to one another.
  • the invention achieves the object with a heating device for heating a medium, with a medium tank, a combustion device and a flue gas heat exchanger, the flue gas heat exchanger being arranged in the medium tank, and the flue gas heat exchanger is designed according to one of the aforementioned embodiments.
  • the above and following explanations therefore also relate to the heating device with the flue gas heat exchanger, so that there is no need to repeat here.
  • the heating device is designed for use in caravans or mobile homes.
  • This relates e.g. B. on weight and external dimensions, which allow the heater to be installed and operated in camping vehicles (e.g., in caravans or mobile homes / motorhomes).
  • camping vehicles e.g., in caravans or mobile homes / motorhomes.
  • This possibility of application also relates, for example, to safety aspects, etc.
  • FIG. 1 is a spatial representation of an embodiment of a flue gas heat exchanger in a cut medium container
  • Fig. 2 is a side view of a purely schematic flue gas heat exchanger
  • Fig. 3 is a schematic representation of a heating device.
  • the 1 shows an exemplary embodiment of a flue gas heat exchanger 1, which is located in a medium container 20.
  • the medium container 20 is shown cut away here.
  • the medium to be heated - not shown here - is, for example, water or a water-glycol mixture.
  • the flue gas heat exchanger 1, the z. B. consists of a deep-drawn part, a flue gas flows through in the application.
  • the flue gas releases thermal energy onto the flue gas heat exchanger 1 and, via this, onto the surrounding medium.
  • the flue gas results from the combustion of an air-fuel mixture, the fuel being, for example, a combustible gas (e.g. propane or butane) or a liquid fuel (e.g. diesel) converted into the gaseous state.
  • a combustible gas e.g. propane or butane
  • a liquid fuel e.g. diesel
  • the flue gas is generated in the combustion chamber 101.
  • the combustion chamber 101 In front of the combustion chamber 101 there is also the entrance of the flue gas heat exchanger 1, via which, for example, the combustion device (or burner) (not shown here) can also be introduced.
  • the flue gas is led from the combustion chamber 101 via four flue gas guide sections 11, 12, 13, 14 to the exhaust gas outlet 102.
  • the combustion chamber 101 is located within the first flue gas guide section 11, which is in the form of a tube with an essentially constant one Is designed inside diameter.
  • the first flue gas routing section 11 merges into a second flue gas routing section 12 on a front side of the flue gas heat exchanger 1, which is opposite the front side from which the combustion chamber 101 starts and on which the exhaust gas outlet 102 opens.
  • the first flue gas guide section 11 and the second flue gas guide section 12 enclose a right angle.
  • angled refers to at least one main flow direction of a flue gas in the respective flue gas duct section.
  • the transition itself can also be rounded off accordingly.
  • the inner diameter of the second flue gas guide section 12 tapers in the direction of flow in which the flue gas flows from the combustion chamber 101 to the exhaust gas outlet 102.
  • the tubular sections 130 of the third flue gas duct section 13 branch off from the second flue gas duct section 12 at a separate outlet connection point 131.
  • the flue gas is thus divided into partial flows via the partial sections 130.
  • the partial sections 130 have inner diameters that are significantly smaller than the inner diameters of the other flue gas guide sections 11, 12, 14.
  • the partial sections 130 run parallel to one another in the illustrated embodiment and parallel to the first flue gas guide section 11.
  • the partial sections 130 each have three reductions 133 of the inner diameter. This reduces the risk of laminar flow of the flue gas, which would reduce heat transfer.
  • the partial sections 130 each open into the fourth flue gas guide section 14, which runs parallel to the second flue gas guide section 12, via an orifice connection point 132.
  • the flue gas is therefore not brought together before the fourth flue gas guide section 14, but the partial flows of the flue gas pass individually into the fourth flue gas guide section 14.
  • the flue gas flows in parallel in the two flue gas guide sections 14 and 12, but in different directions.
  • the fourth flue gas guide section 14 widens here in the direction of flow of the flue gas, ie the inside diameter becomes larger.
  • the fourth flue gas guide section 14 finally opens into the exhaust gas outlet 102, which is also tubular here and which merges into an exhaust gas guide system (not shown here).
  • the exhaust gas outlet 102 is arranged here at the region of the fourth flue gas guide section 14 which has the largest inner diameter of the fourth flue gas guide section 14.
  • the flue gas heat exchanger 1 has four flue gas guide sections 11, 12, 13, 14, which moreover enclose a rectangle in the variant shown.
  • the combustion chamber 101 belongs to the first flue gas duct section 11 and the exhaust gas outlet 102 branches off from the fourth flue gas duct section 14 in the embodiment shown.
  • the flue gas guide sections 11, 12, 13, 14 have identical or different cross-sectional shapes, depending on the design. So z. B. round, oval or rectangular cross-sections possible.
  • the flue gas heat exchanger 1 is completely surrounded by the medium in the medium container 20. Therefore, only the maximum temperature of the medium and the remaining residual temperature of the flue gas, which is discharged as exhaust gas, are the effective outside temperatures. Therefore, with regard to the materials used, only the maximum temperature of the medium (e.g. water) and the exhaust gas in the exhaust system - not shown here - is decisive.
  • the medium e.g. water
  • the flue gas heat exchanger 1 shown consists of two housing shells 10, each having one half of the flue gas guide sections and complementing each other accordingly. This simplifies production and thus reduces costs. For example, it is possible to connect the housing shells 10 to one another without great effort. welding. Since the weld seams that come into contact with the media can be reliably formed, they are particularly insensitive to corrosion.
  • FIG. 3 schematically shows an embodiment of the heating device 100 which is to be used for heating process water.
  • the water is in the medium container 20, in which the flue gas heat exchanger 1 is arranged.
  • the combustion device 30 generates, for example by burning an air-gas mixture, the flue gas which is passed through the flue gas heat exchanger 1 in order to heat the water.
  • An exhaust gas routing system for the removal of the flue gas or the exhaust gas is not shown here.
  • first flue gas duct section second flue gas duct section third flue gas duct section fourth flue gas duct section

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  • 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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur à gaz de combustion (1) qui comprend une chambre de combustion (101) et une sortie de gaz d'échappement (102). La chambre de combustion (101) est située dans une première portion de conduit de gaz de combustion (11) qui est suivie d'une deuxième portion de conduit de gaz de combustion (12), d'une troisième portion de conduit de gaz de combustion (13) et d'une quatrième portion de conduit de gaz de combustion (14). La quatrième portion de conduit de gaz de combustion (14) se transforme en la sortie de gaz d'échappement (102). L'invention concerne en outre un dispositif de chauffage (100) destiné à chauffer un milieu.
PCT/EP2019/073321 2018-09-10 2019-09-02 Échangeur de chaleur à gaz de combustion et dispositif de chauffage équipé d'un échangeur de chaleur à gaz de combustion WO2020053010A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018007129.5A DE102018007129A1 (de) 2018-09-10 2018-09-10 Rauchgas-Wärmetauscher und Heizvorrichtung mit Rauchgas-Wärmetauscher
DE102018007129.5 2018-09-10

Publications (1)

Publication Number Publication Date
WO2020053010A1 true WO2020053010A1 (fr) 2020-03-19

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Family Applications (1)

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PCT/EP2019/073321 WO2020053010A1 (fr) 2018-09-10 2019-09-02 Échangeur de chaleur à gaz de combustion et dispositif de chauffage équipé d'un échangeur de chaleur à gaz de combustion

Country Status (2)

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DE (1) DE102018007129A1 (fr)
WO (1) WO2020053010A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1454295A1 (de) * 1963-07-11 1969-02-06 Philipp Kreis Raumheizgeraet fuer Kleinraeume,insbesondere Wohnwaegen
US4938204A (en) 1989-08-18 1990-07-03 Pvi Industries, Inc. Water heater or boiler with improved thermal efficiency
US4982785A (en) * 1990-03-06 1991-01-08 Inter-City Products Corporation (Usa) Serpentine heat exchanger
US5359989A (en) * 1993-03-04 1994-11-01 Evcon Industries, Inc. Furnace with heat exchanger
DE19961133C1 (de) 1999-12-17 2001-04-26 Truma Geraetetechnik Gmbh & Co Rauchgas-Wärmetauscher
US20020040777A1 (en) * 2000-09-29 2002-04-11 Tomlinson Ronald S. Heat exchanger with enhancements
US20140165990A1 (en) * 2012-12-14 2014-06-19 Lennox Industries Inc. Strain reduction clamshell heat exchanger design
US20180106500A1 (en) * 2016-10-18 2018-04-19 Trane International Inc. Enhanced Tubular Heat Exchanger

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1454295A1 (de) * 1963-07-11 1969-02-06 Philipp Kreis Raumheizgeraet fuer Kleinraeume,insbesondere Wohnwaegen
US4938204A (en) 1989-08-18 1990-07-03 Pvi Industries, Inc. Water heater or boiler with improved thermal efficiency
US4982785A (en) * 1990-03-06 1991-01-08 Inter-City Products Corporation (Usa) Serpentine heat exchanger
US5359989A (en) * 1993-03-04 1994-11-01 Evcon Industries, Inc. Furnace with heat exchanger
DE19961133C1 (de) 1999-12-17 2001-04-26 Truma Geraetetechnik Gmbh & Co Rauchgas-Wärmetauscher
US20020040777A1 (en) * 2000-09-29 2002-04-11 Tomlinson Ronald S. Heat exchanger with enhancements
US20140165990A1 (en) * 2012-12-14 2014-06-19 Lennox Industries Inc. Strain reduction clamshell heat exchanger design
US20180106500A1 (en) * 2016-10-18 2018-04-19 Trane International Inc. Enhanced Tubular Heat Exchanger

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