EP2784429A2 - Dispositif caloporteur et four équipé de celui-ci - Google Patents

Dispositif caloporteur et four équipé de celui-ci Download PDF

Info

Publication number: EP2784429A2
Authority: EP; European Patent Office
Prior art keywords: heat; transfer device; heat transfer; channel; absorber
Prior art date: 2013-03-12
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

EP14000881.4A

Other languages

German (de)

English (en)

Other versions

EP2784429A3 (fr

EP2784429B1 (fr

Inventor

Johann Rainer

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.)

Individual

Original Assignee

Individual

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.)

2013-03-12

Filing date

2014-03-12

Publication date

2014-10-01

2014-03-12 Application filed by Individual filed Critical Individual

2014-10-01 Publication of EP2784429A2 publication Critical patent/EP2784429A2/fr

2015-04-01 Publication of EP2784429A3 publication Critical patent/EP2784429A3/fr

2019-05-08 Application granted granted Critical

2019-05-08 Publication of EP2784429B1 publication Critical patent/EP2784429B1/fr

Status Active legal-status Critical Current

2034-03-12 Anticipated expiration legal-status Critical

Links

Images

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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
- F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
- F28D21/0007—Water heaters
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
- F24B9/00—Stoves, ranges or flue-gas ducts, with additional provisions for heating water
- F24B9/006—Stoves, ranges or flue-gas ducts, with additional provisions for heating water flue-gas ducts
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/34—Elements and arrangements for heat storage or insulation
- 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
- F24H9/0026—Guiding means in combustion gas channels
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- 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
- F24H2230/00—Solid fuel fired boiler

Definitions

the invention relates to a heat transfer device, comprising a gas inlet for a heat-containing gas, at least one pulling channel, which is flowed through by the gas, a heat absorber, which receives heat emitted by the flowing gas, and a gas outlet for the thus cooled gas, as well as a oven equipped with such a heat transfer device.
Such heat transfer devices are well known in the art. They serve to deliver the heat contained in the flue gas of the furnace, which has a temperature of about 900 °, not unused to the environment, but to withdraw the flue gas before to use them selectively.
the flue gas is usually cooled to temperatures below 200 °, even up to about 120 ° or 110 °.
the heat absorbers receiving the heat removed from the gas can be designed as classic heat exchangers, in which a circulating fluid near the draw channel flows past and absorbs heat, which it otherwise, for example in radiators, again gives off.
the heat can also be stored by the heat absorber (so-called fireclay masses). It is said to store the heat in bulk. The stored heat is then released over a longer period of time to the environment.
the invention is therefore an object of the invention to improve a heat transfer device of the type mentioned in particular with respect to a more uniform heat transfer in particular still satisfactory efficiencies.
the invention is based on the finding that a Buchkanal arrangement differently than vertically upwardly extending channels with symmetrical, d. H. Circular or square / rectangular cross-section (i.e., without excellent side) improves the flow conduction and uniformity of heat transfer. Under the predominant heat emission to the one excellent side out with respect to the outer boundary of the Werkanals clearly asymmetric to this one side shifted heat flow to understand.
the shape and / or attitude property causes a shift in the weight of the flow distribution orthogonal to the flow direction of the flowing gas toward the side of the heat absorber.
a corresponding outer excellent boundary surface of the Glaskanals be formed by the inner surface of the heat absorber. The main heat transfer takes place via this excellent site.
the invention provides several shape and location properties that contribute to this desired asymmetric heat transfer.
a positional property relates to an inclination of the boundary of the Buchkanals relative to the vertical and seen in the flow direction away from the heat absorber. This limitation is repeatedly flown through by the naturally perpendicular rising flue gas.
the angle of inclination should be 2 ° or greater, preferably 4 ° or greater, in particular 6 ° or greater, on the other hand, it is preferred that it is not greater than 30 °, preferably not greater than 20 °, in particular not greater than 12 °, whereby boundary conditions with regard to size and space requirements are to be taken into account.
Another positional feature provides a taper of the cross section of the Buchkanals. This ensures a more uniform heat transfer, in particular with regard to the height direction.
the boundary, which limits the heat absorber, opposite boundary is preferably inclined in the same direction from the vertical, for producing the taper, however, at a lower angle of inclination, preferably in the range between 20% and 80%, preferably between 30% and 70%, in particular between 40% and 60% of the angle of inclination of the heat absorber side is.
inclination angles of 2 ° or more, but also 4 ° or more are preferred, with preferred upper limits of 24 °, more preferably 16 °, in particular 8 °.
a particularly preferred embodiment provides for the simultaneous realization of the tapering cross-sectional shape with asymmetrical flow resistance in the case of an inclined boundary of the pulling channel facing the heat receiver.
a shape characteristic refers to the shape of the cross-sectional area of the pulling channel. On the one hand, this preferably has a region of the boundary opposite the boundary facing the heat absorber, the shape of which generates an increased flow resistance with respect to the other side. This shifts the flow weight in turn further to the excellent boundary side to the heat absorber.
a preferred cross-sectional constriction preferably only one transverse dimension of the Buchkanals shortens, while the other remains unchanged. The shape of the cross section of the Werkanals thus changes over the height, but not their basic shape.
the shape of a right triangle with the hypotenuse formed by the heat receiver would lose the right-angled shape and change to an obtuse-angled triangle.
the corresponding transverse dimension is reduced to half.
triangular shape instead of the triangular shape, however, other shapes are conceivable, such as a trapezoidal shape with a longer side edge to the side of the heat absorber, but also semicircular geometries or semi-elliptical.
the heat transfer device has a plurality of such pull channels, which are in particular divided into two groups and form a right and a left part of a Glaskanal Modell. These are constructed, for example, axially symmetrical to a center plane of the furnace, wherein the heat absorber is also divided into two and each extending on the outside of the two halves of the Glaskanal Modell. To the inside, the two halves of the Werkanalstructure are limited by the respective plurality of Werkanälen by insulating material, the latter can be realized, for example in the form of a particular hanging insert that forms the area of the boundary of the Werkanäle that do not correspond to the excellent side to the heat absorber out.
the heat transfer device has a mechanism with which the cross-sectional area of the sum of the Werkanäle is variable within certain limits, in particular feasible by the type of suspension of the insert, which defines the remaining part of the boundaries of the Werkanäle.
a cleaning device in particular for cleaning the inner surfaces of the heat absorbers.
This is also preferably achieved by the type of suspension of the insert, which allows a suitably actuated pendulum movement of the insert.
the invention also provides a furnace equipped with such a heat transfer device under protection.
the gas inlet of the heat transfer device is connected to a flue gas outlet of the combustion chamber, so that the flue gas can flow through the draft channels of the heat transfer device.
the advantages of the furnace according to the invention result from the above-described advantages of the heat transfer device according to the invention and in particular relate to a particularly uniform heat transfer over the entire surface of the heat absorber with very good efficiencies.
the in Fig. 1 illustrated furnace 100 has a supported on legs 30 combustion chamber 20 which is accessible via a provided with a handle 60 door 50 for operators of the furnace 100.
the legs 30 are based on, for example, height-adjustable feet 40.
a flange plate 70 is arranged, which has a central opening 71 for the withdrawal of the combustion chamber 20 during operation resulting flue gas.
a heat transfer device 10 is placed, which is flowed through by the upwardly flowing from the opening 71 flue gas.
the flue gas enters a downstream of a baffle 88 arranged Endabzug 90th
the oven 100 has features known in the art.
the structure of the heat transfer device 10 will be described in more detail.
Fig. 2 It can be seen that the heat transfer device 10 in this embodiment, the furnace front side facing and remote heat absorber 8 has. These extend into Fig. 2 perpendicular to the plane of the paper over substantially the full width of the furnace 100 between two structural side parts, not shown, of the heat transfer device 10.
the heat receivers 8 define with their inner surfaces 7, the outwardly facing sides of a Buchkanal Quilt 6L, 6R, which will be described in more detail below.
An inner boundary of the Buchkanal Modell 6L, 6R is formed by an insert 4, which has at its end facing the combustion chamber 20, a support 5, on which portions of the insert 4, which determine the shape of the Buchkanal Modell 6L, 6R support.
the carrier 5 serves by the shape of its downwardly facing surface of the uniform distribution of the flowing from the combustion chamber 20 flue gas on the two sides 6L, 6R.
the latter has no direct access to the entrances of the Glaskanal Modell 6L, 6R in the region of the central opening 71 of the flange plate 70 in this embodiment, but is guided around a protective plate 21 which is disposed in the upper region of the combustion chamber 20.
Fig. 3 is a bottom view of the heat transfer device 10, in the center of the carrier 5 and laterally outside the heat receivers 8 are shown.
Each side 6L and 6R of the pull channel structure 6L, 6R has a plurality of pull channels 3 bounded on its outside by the inner surface 7 of the heat absorber 8.
a pulling channel 3 is bounded by two along the edge 4c an angle with each other enclosing side surfaces 4a, 4b, so that the pulling channel 3 in a horizontal section assumes a triangular shape in this embodiment. Since the edge 4c connecting the two side surfaces 4a, 4b does not have the same inclination ⁇ as the inner surface 7 of the heat absorber 8, the cross section of the pulling channel 3 tapers with increasing height.
the edge 4c is also inclined inwardly, but by an angle ⁇ , which in this embodiment is about 4 °, ie about half of the angle ⁇ .
the course of the edge 4c thus turns in the height direction of the height direction corresponding to the natural slope direction of the flue gas. This also contributes to the fact that the flow weight shifts toward the inner surface 7 of the heat absorber 8.
due to the reduced in cross-section cross-section of the Werkanals 3 with the height increasing speed of the flue gas due to the uniform heat transfer is achieved in the heat absorber 8 despite the fact that the flue gas continues to cool down on its flow path.
the area around the edge 4c which is predetermined by the geometry of the side surfaces 4a, 4b, furthermore forms a zone of higher flow resistance, which shifts the main flow and thus the main heat transfer further in the direction of the inner surface 7 of the heat absorber 8.
this leads to a special asymmetric heat transfer in the pulling channel 3, on one side towards the outside, ie to the inner surface 7 of the heat absorber 8.
the heat absorber 8 is configured as a heat storage, and for example by a fireclay mass (burned fireclay, pressed refractory bricks, soapstone, etc.) is formed, which is able to absorb larger amounts of heat and slowly return to the environment.
a fireclay mass burned fireclay, pressed refractory bricks, soapstone, etc.
the material of the insert 4 is a barely absorbing heat insulating material, which also hardly sooty.
Fig. 4 is configured as a heat accumulator heat accumulator 8 composed of blocks that are simply stacked on top of each other.
the heat absorber 8 may consist of a plate-like part or a plurality of plate-like parts (ribs) which are suitably fastened to the structuring side parts, not shown, for example, guided in a groove.
the latter variant also allows configurations with a lower total weight.
the forming parts of the insert 4 can be installed. These may be provided, for example, in sentences that define, for example, two or three of the draft channels 3. Optionally, longer pieces defining more than three pull channels could be made in one piece. Subsequently, the installation of the other part of the heat absorber 8 on the other side (to page 6L) take place. Finally, the heat transfer device 10 is surrounded by a housing, not shown, which is arranged in any case in the case of an embodiment of the heat absorber 8 as a heat storage spaced therefrom.
the altitude of the insert 4 can be changed and adjusted to a desired height. Due to the conical contour of the Buchkanal Modell 6L, 6R and the insert 4 can thus change the entire cross-sectional area of the Werkanal Modell 6L, 6R and set to a desired value. This is particularly advantageous if, for any reason, an overall trigger does not work well enough, but can still be positively influenced by a cross-sectional enlargement in the area of the heat transfer device. The stove builder can thus make adjustments and optimize.
the insert 4 Due to the substantially point-shaped mounting of the end portions 2 on the screws 1, the insert 4 has a total of a movement in a in Fig. 2 perpendicular to the paper plane direction, so the oven width direction.
a back and forth of the insert 4 in the oven width direction can be performed for example by an unillustrated actuator by hand, which can be realized for example by a push rod with direct power transmission or via a transmission.
the edges 4d scrape between a face 4a of the insert and its side face 4b of an adjacent pulling channel 3 (see FIG Fig. 3 ) on the inner surface 7 of the heat absorber 8 along and scratch off soot deposits. These fall down into a reachable via the door 50 area of the combustion chamber 20 and can thus be easily removed.
the heat transfer device 10 also allows very simple cleaning options. Ideally, the distance between two consecutive outer edges 4d is smaller than the clearance for this movement in the direction of movement.
Fig. 3 The cross-sectional shape of the Buchkanäle 3 is not on in Fig. 3 shown triangular shape restricted.
other cross-sectional geometries could also be used, some of which are still preferred, for example Fig. 5 are shown, namely trapezoidal, semicircular (or more generally schkegelintroducingförmig).

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Physics & Mathematics (AREA)
Thermal Sciences (AREA)
Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

EP14000881.4A 2013-03-12 2014-03-12 Dispositif caloporteur et four équipé de celui-ci Active EP2784429B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102013004370.0A DE102013004370A1 (de)	2013-03-12	2013-03-12	Wärmeübertragungsvorrichtung und damit ausgestatteter Ofen

Publications (3)

Publication Number	Publication Date
EP2784429A2 true EP2784429A2 (fr)	2014-10-01
EP2784429A3 EP2784429A3 (fr)	2015-04-01
EP2784429B1 EP2784429B1 (fr)	2019-05-08

Family

ID=50280114

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP14000881.4A Active EP2784429B1 (fr)	2013-03-12	2014-03-12	Dispositif caloporteur et four équipé de celui-ci

Country Status (2)

Country	Link
EP (1)	EP2784429B1 (fr)
DE (1)	DE102013004370A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202006000391U1 (de)	2006-01-11	2006-03-02	Rainer, Johann	Reinigungsvorrichtung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE382428A (fr) *
FR596112A (fr) *	1924-03-24	1925-10-16		Dispositif de transmission de chaleur ou de froid à des gaz ou un liquide renfermés dans un réservoir
CH109666A (de) *	1924-07-30	1925-04-16	Stettler Hans	Vorrichtung zur Ausnützung der in den Abgasen von Zimmeröfen, Kochherden usw. enthaltenen Wärme.
CH170375A (de) *	1933-08-23	1934-07-15	Keller Wiggenhauser Gottlieb	Einrichtung zur besseren Wärmeausnützung der Verbrennungsgase von Heizungsöfen.
CH224915A (de) *	1942-03-14	1942-12-31	Loew & Co	Einrichtung zur Flüssigkeitserhitzung mit einem als Aufsatz an Herden usw. ausgebildeten Wasserbehälter.
US2557712A (en) *	1947-10-20	1951-06-19	Wenger Edgar	Water heater
ES349259A1 (es) *	1967-01-04	1969-04-01	Hourwitz	Perfeccionamientos en los intercambiadores termicos de gas-liquido.
DE3708386A1 (de) *	1987-03-14	1988-09-22	Hans Peter Wittrock	Rekuperator
AT7216U1 (de) *	2003-09-26	2004-11-25	Johann Perhofer	Wärmetauscher zur rückgewinnung der wärme von abgas
US7000572B1 (en) *	2004-10-02	2006-02-21	Schimmeyer Werner K	Telescopic baffle for water heater
DE102006019057A1 (de) *	2006-04-25	2007-10-31	Johann Rainer	Ofen mit Primärzuluft und Verfahren zum Betreiben eines solchen Ofens
DE102008002096A1 (de) *	2008-05-30	2009-12-03	Robert Bosch Gmbh	Wärmeübertrager
AT507528B1 (de) *	2008-10-09	2013-01-15	Kalkgruber Johann	Wärmetauscher für einen heizkessel

2013
- 2013-03-12 DE DE102013004370.0A patent/DE102013004370A1/de not_active Withdrawn
2014
- 2014-03-12 EP EP14000881.4A patent/EP2784429B1/fr active Active

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202006000391U1 (de)	2006-01-11	2006-03-02	Rainer, Johann	Reinigungsvorrichtung

Also Published As

Publication number	Publication date
EP2784429A3 (fr)	2015-04-01
EP2784429B1 (fr)	2019-05-08
DE102013004370A1 (de)	2014-09-18

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