EP3578911A1 - Échangeur de chaleur tubulaire pour un four de cuisson - Google Patents

Échangeur de chaleur tubulaire pour un four de cuisson Download PDF

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Publication number
EP3578911A1
EP3578911A1 EP19176648.4A EP19176648A EP3578911A1 EP 3578911 A1 EP3578911 A1 EP 3578911A1 EP 19176648 A EP19176648 A EP 19176648A EP 3578911 A1 EP3578911 A1 EP 3578911A1
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EP
European Patent Office
Prior art keywords
heat exchanger
tube
pipe
sections
oven
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
EP19176648.4A
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German (de)
English (en)
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EP3578911B1 (fr
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.)
Werner and Pfleiderer Industrielle Backtechnik GmbH
Original Assignee
Werner and Pfleiderer Industrielle Backtechnik GmbH
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Filing date
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Application filed by Werner and Pfleiderer Industrielle Backtechnik GmbH filed Critical Werner and Pfleiderer Industrielle Backtechnik GmbH
Priority to PL19176648T priority Critical patent/PL3578911T3/pl
Publication of EP3578911A1 publication Critical patent/EP3578911A1/fr
Application granted granted Critical
Publication of EP3578911B1 publication Critical patent/EP3578911B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F28D7/08—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 being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—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 being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—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 being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • F28D7/087—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 being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions assembled in arrays, each array being arranged in the same plane
    • 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
    • F28F9/0243—Header boxes having a circular cross-section
    • 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
    • F28D1/04—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 tubular conduits
    • F28D1/047—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 tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • 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
    • F28D3/00—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 flows in a continuous film, or trickles freely, over the conduits
    • F28D3/02—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 flows in a continuous film, or trickles freely, over the conduits with tubular conduits
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines

Definitions

  • the invention relates to a tube heat exchanger for an oven. Furthermore, the invention relates to a method for producing a coil-tube heat exchanger and a baking oven module and an oven with at least one such tube heat exchanger.
  • Pipe heat exchanger of the type mentioned are known, for example, as Flachrohrsch GmbH or as Kissenradiatoren from the market.
  • a tube heat exchanger is known from the AT 27 736 B
  • An oven is known from the DE-PS 927 861
  • a heat exchanger for a shower or bath is known from the CH 709 194 A2 .
  • a defined small distance of adjacent tube sections of the tube heat exchanger which is smaller than a tube diameter, leads to an efficient transfer of heat from the tube sections to a fluid flowing through in each case between adjacent tube sections, eg by flowing air.
  • the advantages of baking space heating via a radiation output from the tube heat exchanger can thus be combined with the advantages of a convective heat transfer, especially in a circulating air heated baking chamber.
  • one of the heat transfer mechanisms "radiant heat” or “heat transfer to fluid flowing through” can then be dominant.
  • thermal oil can be used as a heat transfer fluid thermal oil can be used.
  • the spacing of adjacent pipe sections may be greater than 2% of the pipe diameter, may be greater than 3% and may, for example, be in the range of 5% of the pipe diameter.
  • the spacing of adjacent pipe sections may be less than 20% of the pipe diameter, may be less than 15% and may be less than 10% of the pipe diameter.
  • An absolute distance between adjacent pipe sections of the tube heat exchanger can be 2 mm.
  • 180 ° diverter sections between two tube sections of the same queue line path are led out of the arrangement plane for at least one of the queue line paths.
  • Such 180 ° deflecting sections, which are led out of the arrangement plane avoid a construction space conflict between the deflecting sections of the various serpentine pathways.
  • a passage extends between the tube sections, which can be interrupted at most longitudinally negligible extension sections by mounting components, along the entire pipe sections. This will increase the effectiveness the heat transfer from the pipe sections to the fluid flowing between them optimized.
  • the tube heat exchanger may also have more than two serpentine pathways according to claim 3.
  • An arrangement of the pipe sections according to claim 4 may increase a minimum bending radius of the tube forming the pipe sections within each of a queue-line path. As a result, the production of the tube heat exchanger is simplified.
  • An inlet side piece of tubing according to claim 5 allows a common heat transfer fluid supply for the various coil line inlets.
  • a corresponding piece of tubing can also be provided on the outlet side.
  • Another object of the invention is to provide a manufacturing method for a coil-tube heat exchanger having at least two serpentine passageways.
  • the advantages of the manufacturing process are the same as those already explained above with reference to the coiled-tube heat exchanger having the at least two serpentine conduction paths.
  • the snake tube heat exchanger can be made of exactly one type of pipe by appropriate sequential bending and optionally An publishedeln further tubes.
  • a method according to claim 8 allows the production of a coil-tube heat exchanger according to claim 6.
  • the bending out of the bent out 180 ° Ummenkabitese can be done by means of a corresponding pipe bending device in the course of the production of the snake pipe routes.
  • a resulting bending angle may be, for example, in the range of 150 °.
  • the pipe sections of the tube heat exchanger can extend horizontally in the oven module or in the oven.
  • the pipe sections of the tube heat exchanger can extend transversely to a conveying direction of the baked good through the oven module or the oven. This transverse extension can be made over a width of the entire oven.
  • the pipe sections of the tube heat exchanger can also extend in the conveying direction of the baked goods.
  • the oven may be a continuous oven, in particular a tunnel oven.
  • the oven can consist of several oven modules be made, which can be constructed in particular similar.
  • Fig. 1 shows an overall side view of running as a tunnel oven continuous oven 1, can be produced with the example as long-pastries in the form of soft biscuits, hard biscuits or lye pastry. Other baked goods, such as toast, can be processed in the oven.
  • the oven 1 is also a roasting and as a special application also a drying or sterilizing possible.
  • Fig. 1 are a total of eight oven modules 2 1 to 2 8 , which belong to an upper flow-baking space, and underneath eight oven modules 3 1 to 3 8 shown belonging to a lower flow-back space of the continuous oven 1.
  • the oven modules are thus arranged two-storey in the continuous oven 1.
  • the furnace modules 2 1 to 2 8 and 3 1 to 3 8 each have the same basic structure, in particular as regards a support frame design and recordings for attachments and built-in parts.
  • the furnace modules 2 1 to 2 8 and 3 1 to 3 8 have the same dimensions, so have regard to height, width and depth, in each case basically the same space requirements.
  • the furnace modules 2 1 to 2 8 and 3 1 to 3 8 initially exist as separate modules and are connected to each other during assembly of the oven 1. In each of the oven modules 2 1 to 2 8 and 3 1 to 3 8 heated circulating air is circulated in each case via heat exchanger described below.
  • the upper furnace modules 2 1 to 2 8 are supported by the lower furnace modules 3 1 to 3 8 .
  • the lower furnace modules 3 1 to 3 8 are supported by a machine floor.
  • a feed module 4 for the dough which in turn is designed two-storey and communicates with the two flow-baking chambers.
  • a dispensing module 5 of the continuous baking oven 1 for taking over the baked baked goods from the through-baking chambers and for dispensing this is arranged, which is also designed two-storey and again with communicates with the two pass-back rooms.
  • the number N of the furnace modules 2 i , 3 i can vary in practice, for example, between 5 and 20.
  • To be baked dough occurs on the feed module 4 in the respective flow-baking chamber 7, 8, ie in the respective leading initial oven module 2 1 , 3 1 , passes through the respective flow-baking chamber 7, 8 along the dough-conveying direction 9 and occurs via the output module 5 after passing through the respective last finishing oven modules 2 i , 3 i from the pass-back rooms 7, 8 finished baked again.
  • a cleaning opening 6 a in each case an inspection opening 6 b and in each case a steam opening 6 c.
  • About the respective damage opening 6c is a loading / Entschwaden the respective baking chamber of the oven module 2 i , 3 i possible.
  • Fig. 2 shows a section through one of the oven modules using the example of the oven module 2 1 .
  • the conveying direction 9 is perpendicular to the cutting or drawing plane of the Fig. 2
  • Fig. 3 shows the example of one of the furnace modules 2 i this more in detail.
  • the furnace modules 3 i are also constructed so that it is sufficient, in the detail representation after Fig. 3 to show an example of the furnace modules 2 i .
  • the Fig. 2 can not be inferred, is so far on the Fig. 3 directed.
  • the oven modules 2 i , 3 i each have a baking chamber 10 which is heated on the one hand directly via the circulating air and on the other hand via radiant heat, which are generated by heat exchangers in the form of two coil tube heat exchangers 11, 12.
  • the baking chambers 10 are each part of the two stacked flow-back rooms 7, 8, which are formed on the one hand by the upper furnace modules 2 i and on the other hand by the lower furnace modules. 3 i .
  • the pipe heat exchanger 11 arranged above the baking chamber thereby generates top heat for the baking chamber 10.
  • the pipe heat exchanger 12 arranged below the baking chamber generates bottom heat for the baking chamber 10.
  • thermal oil As a heat transfer fluid, which flows through the tube heat exchanger 11, 12, thermal oil is used.
  • the upper tube heat exchanger 11 is supported by a holding frame 13, which is mounted on side frame cheeks 14, 15 of the oven module 6. Together with an upper holding plate 16 and a lower holding plate 17, the two frame cheeks 14, 15 form a back space module 18 in which, inter alia, the two tube heat exchangers 11, 12 of the oven module 2 i are housed. Between the upper holding plate 16 and the upper tube heat exchanger 11, an air guide plate 18a is arranged. The latter serves to even out a circulating air flow in the oven 10. The air guide plate 18a can also absorb heat energy from the tube heat exchanger 11 and deliver it to the circulating air, so it can serve as an additional indirect heat exchanger component. A corresponding air guide plate 18 a is arranged between the lower tube heat exchanger 12 and the lower holding plate 17.
  • the continuous oven 1 has according to its two-story structure, two endless conveyor belts 20, namely an upper endless conveyor belt 20 for the oven modules 2 i and a constructed in the same way lower endless conveyor belt for the lower oven modules 3 i . It is therefore sufficient to describe one of these conveyor belts below.
  • the conveyor belt 20 has a plurality of belt members 21, of which in the Fig. 2 an upper band member 21 o and a lower band member 21 u can be seen.
  • the upper band member 21 o is in its current operating position part of the upper conveyor run 19 and is arranged in the baking chamber 10.
  • the lower belt member 21 u is part of a lower belt run 22, which runs below the baking chamber 10 and the lower tube heat exchanger 11 by a return conveyor belt space 23 against the conveying direction 9 as part of the endless conveyor belt 20.
  • an upper recirculating air channel 24 is arranged between the upper holding plate 16 of the back room module 18 and an upper module plate 23a of the oven module 2 i , 3 i .
  • an upper recirculating air channel 24 is arranged between the lower holding plate 17 of the back room module 18 and a lower module plate 25 .
  • a lower recirculating air channel 26 is arranged between the lower holding plate 17 of the back room module 18 and a lower module plate 25 .
  • the two circulating air channels 24, 26 extend over the entire width of the oven module 2 i , 3 i .
  • inlet and outlet air channels 27, 28, 29, 30 are the two circulating air channels 24, 26 with two axial / radial fans 31, 32 in fluid communication. Overall, this results in each case a circulation circuit of the respective furnace module 2 i , 3 i .
  • the baking chamber 10 of the respective oven module 2 i , 3 i is part of this circulating air circulation.
  • the fans 31 and 32 are together with the respective circulating air components of a circulating device of the continuous oven 1.
  • the two fans 31, 32 and the supply air and exhaust air channels 27 to 30 are mounted on lateral, vertically extending frame plates 33, 34 of the oven module 2 i , 3 i .
  • Fig. 3 shows the example of the upper coil heat exchanger tube 11 one of the two tube heat exchanger, which come in the oven module 2 1 are used. All tube heat exchangers 11, 12 of the oven modules 2 i , 3 i of the oven 1 are constructed in the same way, so that it is sufficient to subsequently describe this upper tube heat exchanger 11.
  • the tube heat exchanger 11 has a plurality, in the illustrated embodiment namely thirty-six, in an arrangement plane (see level 35 in the Fig. 2 ) arranged side by side heat exchanger tube sections 36 for guiding a heat transfer fluid.
  • Thermo-oil can be used in particular as a heat transfer fluid.
  • the arrangement of the heat exchanger tube sections 36 side by side in the arrangement plane 35 may be such that in fact in a side view as in Fig. 2 all heat exchanger tube sections 36 are completely aligned with each other.
  • longitudinal axes, in particular of adjacent pipe sections 36 can have different distances to the arrangement plane 35.
  • a bandwidth of the distances of the longitudinal axes of the pipe sections 36 to the assembly plane 35 is also smaller in this case than a diameter of the individual pipe sections 36 and is in particular lower as a fraction of this diameter, for example, less than 80%, less than 70%, less than 60%, less than 50%, less than 40%, less than 30%, less than 20% and in particular may be less than 10% of Diameter of the pipe sections 36.
  • the pipe diameter of the pipe sections 36 may be in the range between 10 mm and 150 mm and for example in the range between 25 mm and 50 mm, for example at 35 mm, 38 mm or 40 mm. Unless the pipe sections 36 in side view not as in the Fig. 2 completely aligned with each other, the longitudinal axes of the pipe sections 36 in this case, the arrangement plane 35 so have a distance that is in the range between 0 mm and +/- 20 mm.
  • a distance A between each two adjacent pipe sections 36 is on the one hand smaller than the pipe diameter and on the other hand greater than 1% of the pipe diameter.
  • This distance A is in the Fig. 6 , which shows a section of the tube heat exchanger 11 in a plan view, exemplified for two adjacent pipe sections 36.
  • An absolute distance between two adjacent pipe sections 36 may be in the range between 1 mm and 50 mm, in particular in the range between 1 mm and 10 mm, in the range between 1 mm and 5 mm and may for example be 2 mm.
  • This distance between the adjacent pipe sections 36 allows passage between these pipe sections.
  • Such a passage extends along an entire extension of the pipe sections 36 through the baking chamber 10 transversely to the conveying direction 9 and is possibly interrupted by holding components. Such interruptions are compared to the total extension of the pipe sections 36 very small and As a rule, less than 5% of the total extension of the pipe sections 36. Due to this, by the distance of each adjacent pipe sections 36 resulting passages results in an effective heat transfer from the pipe sections 36 between each adjacent pipe sections 36 by flowing fluid.
  • the tube heat exchanger 11 is formed as a coil-tube heat exchanger.
  • a first serpentine conduction path 41 extends between a first serpentine conduit inlet 42 and a first serpentine conduit exit 43.
  • a second serpentine conduit route 44 extends between a second serpentine conduit inlet 45 and a second serpentine conduit outlet 46 Fig. 3
  • tube heat exchanger 11 shown has exactly two serpentine conduit paths 41 and 44. In principle, a larger number of corresponding serpentine conduit routes is possible.
  • This alternating membership of the pipe sections 36 to the two snake-cable paths 41 and 44 increases a minimum bending radius of the pipe from which the pipe sections 36 are made, within each one of the two snake-cable paths 41, 44.
  • This enlarged radius of curvature is determined by the course of 180 ° Ummenkabêten 47, 48 of the two snake-line paths 41, 44 clearly, which is particularly from the 4 to 6 results, the corresponding enlarged representations of the snake-line paths 41, 44 of the tube heat exchanger 11 show.
  • An inner bending radius of the 180 ° deflecting sections 47, 48 is greater than the pipe radius, ie greater than half the pipe diameter D.
  • This inner bending radius of the 180 ° deflecting sections 47, 48 is smaller than the pipe diameter D.
  • the two snake line inlets 42, 45 on the one hand and the two snake line outlets 43 and 46 on the other hand are in fluid communication with each other via a stub pipe piece 49, 50 and with a collecting inlet 49a on the one hand and with a collecting outlet 50a on the other hand.
  • the two serpentine conduit inlets 42, 45 are in fluid communication with the collection conduit inlet 49a.
  • the collection line inlet 49a in turn is in fluid communication with a heat carrier fluid source, not shown in the drawing.
  • the two collecting line outlets 43, 46 are in fluid communication with the collecting line outlet 50a.
  • the manifold conduit outlet 50a may be in fluid communication with the manifold conduit inlet 49a to form a heat transfer fluid circuit. Part of this cycle may also be a pump, not shown in the drawing for the heat transfer fluid 37.
  • the 180 ° deflecting sections 47 are led out of the arrangement plane 35 between the two tube sections 36 connected thereto, namely bent out at an obtuse angle.
  • a bending angle ⁇ between the arrangement plane 35 and an arrangement plane of the 180 ° deflecting sections 47 (cf. Fig. 2 , shown at the tube heat exchanger 12) is about 150 ° in the illustrated embodiment. This bending angle can be in the range between 120 ° and 165 °.
  • a tube-and-tube heat exchanger in the manner of the tube-tube heat exchangers 11 and 12 of the oven module 6 is manufactured as follows: First, a tube is provided which has a multiple of the length of one of the tube sections 36 between the respective deflection sections 47, 48. Subsequently, a first hose-line path, for example the hose-line path 41, is produced by bending the pipe in the region of the deflection sections 47 between the pipe sections 36. Subsequently, a second hose path, in this case the hose path 44, is made by bending the tube of the turn portions 48 between the pipe sections 36. As soon as these manufactures bend the end of the tube is reached, if appropriate, another tube of the same diameter pieced, so connected to the tube just processed, for example welded to this end face.
  • the two hose-line paths 41, 44 are inserted into each other in the assembly plane 35.
  • the trouser pipe pieces 49, 50 may be connected to, for example, welded to the serpentine conduit inlets 42, 45 and the serpentine conduit outlets 43, 46, and optionally a fluid passage between the respective bellows member 49, 50 and the respective conduit inlets 42, 45 on the one hand and Outlets 43, 46 on the other hand be created.
  • the 180 ° deflecting sections 47 are bent out of the arrangement plane 35 between the pipe sections 36 of the same hose path 41 before inserting the two hose pathways 41, 44 into one another. This bending out can take place simultaneously during the production of this serpentine conduction path 41 by using a corresponding, in particular flat, bending tool.
  • the baked goods passed through the oven modules 2 to 6 on the conveying strand 19 on the one hand by radiant heat from the tube heat exchangers 11, 12, which are housed in the respective furnace modules 2 to 6, and on the other hand via the circulating air , which flows through the respective baking chamber 10 of the oven module 2 to 6, heated.
  • the heat contributions "radiant heat” on the one hand and “circulating heat” (heat transfer to fluid flowing through) on the other can be specified by appropriate design of the tube heat exchanger 11, 12 and by the temperature and flow of the heat transfer fluid 37 through the tube heat exchanger 11, 12 and on the other hand by the backrooms 10 each flowing air quantity.
  • An air flow through the baking chamber 10 (cf., for example, the air flow 40 in the Fig. 2 ) may be directed from bottom to top or from top to bottom depending on the design of the oven module 2 to 6.
  • the one in the Fig. 2 Left fan 31 that the circulating air flows through the supply air duct 27 first into the lower recirculating air duct 26.
  • right fan 32 ensures that the circulating air flows through the right supply air duct 28 in the lower recirculating air duct 26. Due to the pressure in the lower recirculation 26 then resulting overpressure, the circulating air flows from the lower recirculating air channel 26 upwards and between the adjacent pipe sections 36 of the lower tube heat exchanger 12 through, as above in connection with the Fig. 6 already described.
  • the circulating air then flows through the upper conveying strand 19 of the endless conveyor belt 20 and then flows around the baking dough conveyed thereon through the baking chamber 10.
  • the circulating air then flows through the passages between the pipe sections 36 of the upper tube heat exchanger 11 and then flows into the upper circulating air channel 24, from where from the circulating air then via the fan 31, 32 and the exhaust air ducts 29, 30 is sucked off again to complete the respective recirculation circuit.
  • An overpressure in the circulating air circuit can be controlled by a flap-controlled exhaust pipe 51 (cf. Fig. 2 ) escape.
  • the flow direction of the circulating air through the baking chamber 10 can be predetermined by appropriate control of the respective fan 31, 32 from bottom to top or from top to bottom.
  • different temperature zones can be specified. This can be specified by specifying the temperature and / or the flow rate of the thermal oil and / or the amount of circulating air and the direction of air circulation from bottom to top / from top to bottom.
  • the belt member 21 extends transversely to the conveying direction 9 between lateral guides 53, 54 for the endless conveyor belt 20, which are housed for the upper conveyor run 19 in the oven module 18. With these guides 53, 54, the respective band member 21 is connected via suspension mounting plates 55.
  • the upper conveying strand 19 extends in a conveying plane 56, which runs parallel to the arrangement planes of the tube heat exchangers 11, 12 (see arrangement plane 35).
  • the band member 21 has gas passage openings 57, 58. These gas passage openings 57, 58 have an overall opening area which is at least 30% of a total area of the projection of the band member 21.
  • the band member 21 has between the lateral guides, ie between the two suspension mounting plates 55, a plurality and in the illustrated embodiment 2 from each other perpendicular to the conveying plane 56 spaced-apart member levels 59, 60th
  • the first, upper link plane 59 coincides with the conveying plane 56 and is defined by a plurality of double-link arms 63 extending between the lateral link cheeks 61, 62 along the conveying direction 9.
  • the gas passages 58 are arranged between the links of the respective double link arms 63.
  • Link bracket 63 executed. Further gas passage openings in the upper link plane 59 are executed between each two adjacent double-link stirrups 63.
  • the second, lower link level 60 is formed at the moment the upper conveyor run 19 forming band members 21 below the first link plane 59.
  • the gas passage openings 57 in the stiffening plate 64 extend in the manner of oblong holes.
  • the gas passage openings 57 have a longitudinal extension in the direction of the longitudinal extent of the band member 21st
  • the gas passage openings 58 between the brackets of the respective double-link bracket 63 are designed in the manner of elongated holes.
  • the gas passage openings 58 have a longitudinal extent transversely to the longitudinal extent of the belt member 21, that is, as long as the belt member 21 is part of the upper conveyor run 19, parallel to the conveying direction.
  • the band member 21 is self-supporting executed.
  • the band members 21 run in the operation of the tunnel-passing oven 1 in the manner of chain links between the guides 53, 54 endlessly, the upper conveyor run 19 in the conveying direction 9 and the lower belt run 22 against the conveying direction 9.
  • the area of leading Oven module 2 1 and the final oven module 2 N takes a 180 ° deflection over the correspondingly executed guides 53, 54 between the upper conveyor run 19 and the lower belt run 22 instead.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Baking, Grill, Roasting (AREA)
EP19176648.4A 2018-06-06 2019-05-27 Échangeur de chaleur tubulaire pour un four de cuisson Active EP3578911B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19176648T PL3578911T3 (pl) 2018-06-06 2019-05-27 Rurowy wymiennik ciepła do pieca piekarniczego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018208952.3A DE102018208952A1 (de) 2018-06-06 2018-06-06 Rohrwärmetauscher für einen Backofen

Publications (2)

Publication Number Publication Date
EP3578911A1 true EP3578911A1 (fr) 2019-12-11
EP3578911B1 EP3578911B1 (fr) 2021-04-07

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ID=66655183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19176648.4A Active EP3578911B1 (fr) 2018-06-06 2019-05-27 Échangeur de chaleur tubulaire pour un four de cuisson

Country Status (7)

Country Link
US (1) US11015881B2 (fr)
EP (1) EP3578911B1 (fr)
BR (1) BR102019011650A2 (fr)
DE (1) DE102018208952A1 (fr)
ES (1) ES2879425T3 (fr)
PL (1) PL3578911T3 (fr)
RU (1) RU2019115317A (fr)

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DE102019212937B3 (de) * 2019-08-28 2020-08-13 Werner & Pfleiderer Industrielle Backtechnik Gmbh Durchlauf-Backofen für den kontinuierlichen Backbetrieb

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT27736B (de) 1905-10-12 1907-03-11 Hitz Fa J Verfahren zur Herstellung von Raupenleim.
GB191416746A (en) * 1914-07-14 1915-07-01 Waerme Verwertungs Ges Mit Bes Improvements in Heat-exchanging Apparatus.
DE927861C (de) 1951-06-24 1955-05-20 August Lemke Backoefen, insbesondere mit einem oder mehreren Einschiess- oder Auszugherden
AU524322B2 (en) * 1978-05-29 1982-09-09 South African Coal, Oil + Gas Corp. Ltd. + Gea G.m.b.H. Air cooled heat exchanger for cooling industrial liquids
EP0144040A2 (fr) * 1983-11-25 1985-06-12 STEIN INDUSTRIE Société anonyme dite: Dispositif de solidarisation de tronçons verticaux adjacents rapprochés de tubes d'un échangeur de chaleur à boucles
US20040069470A1 (en) * 2002-09-10 2004-04-15 Jacob Gorbulsky Bent-tube heat exchanger
CH709194A2 (de) 2014-01-17 2015-07-31 Joulia Ag Wärmetauscher für eine Dusche oder Badewanne.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008086489A2 (fr) * 2007-01-10 2008-07-17 Karamanos John C Échangeur thermique incorporé pour systèmes et procédés de chauffage, de ventilation et de climatisation (hvac)

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT27736B (de) 1905-10-12 1907-03-11 Hitz Fa J Verfahren zur Herstellung von Raupenleim.
GB191416746A (en) * 1914-07-14 1915-07-01 Waerme Verwertungs Ges Mit Bes Improvements in Heat-exchanging Apparatus.
DE927861C (de) 1951-06-24 1955-05-20 August Lemke Backoefen, insbesondere mit einem oder mehreren Einschiess- oder Auszugherden
AU524322B2 (en) * 1978-05-29 1982-09-09 South African Coal, Oil + Gas Corp. Ltd. + Gea G.m.b.H. Air cooled heat exchanger for cooling industrial liquids
EP0144040A2 (fr) * 1983-11-25 1985-06-12 STEIN INDUSTRIE Société anonyme dite: Dispositif de solidarisation de tronçons verticaux adjacents rapprochés de tubes d'un échangeur de chaleur à boucles
US20040069470A1 (en) * 2002-09-10 2004-04-15 Jacob Gorbulsky Bent-tube heat exchanger
CH709194A2 (de) 2014-01-17 2015-07-31 Joulia Ag Wärmetauscher für eine Dusche oder Badewanne.

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DE102018208952A1 (de) 2019-12-12
US20190376751A1 (en) 2019-12-12
BR102019011650A2 (pt) 2019-12-24
ES2879425T3 (es) 2021-11-22
PL3578911T3 (pl) 2021-10-25
EP3578911B1 (fr) 2021-04-07
RU2019115317A (ru) 2020-11-20
US11015881B2 (en) 2021-05-25

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