EP1789730A1 - Accumulateur thermique et appareil de cuisson comprenant un accumulateur thermique de ce type - Google Patents

Accumulateur thermique et appareil de cuisson comprenant un accumulateur thermique de ce type

Info

Publication number
EP1789730A1
EP1789730A1 EP05791404A EP05791404A EP1789730A1 EP 1789730 A1 EP1789730 A1 EP 1789730A1 EP 05791404 A EP05791404 A EP 05791404A EP 05791404 A EP05791404 A EP 05791404A EP 1789730 A1 EP1789730 A1 EP 1789730A1
Authority
EP
European Patent Office
Prior art keywords
heat
storage device
steam generator
heat storage
steam
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
EP05791404A
Other languages
German (de)
English (en)
Other versions
EP1789730B1 (fr
Inventor
Peter Kohlstrung
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.)
Rational AG
Original Assignee
Rational AG
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 Rational AG filed Critical Rational AG
Publication of EP1789730A1 publication Critical patent/EP1789730A1/fr
Application granted granted Critical
Publication of EP1789730B1 publication Critical patent/EP1789730B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising

Definitions

  • the invention relates to a heat storage device and a cooking appliance with such a heat storage device.
  • Heat storage devices for cooking appliances are already known from the prior art.
  • a convection oven for cooking Spei ⁇ sen by means of hot air is known in which a luftstrombeaufschlagter heat storage for covering an initial heat demand is used.
  • the convection oven and the heat storage can be formed separately.
  • a heat storage device is described which describes a closed aggregate with heating coils which are inserted into the cooking chamber of the circulating air oven and which are filled, for example, with highly heatable salt solutions.
  • a heat storage device for a cooking appliance with a closable by a door housing comprising an interior with a cooking space, at least one heater for generating hot air and / or steam from a steam generator and a blower device for Zirkulie ⁇ ren of hot air and / or steam in the cooking chamber, wherein the heat storage device zu ⁇ least one storage vessel for at least temporarily receiving a fluid at least above a certain temperature medium and at least one lange (2004)erein ⁇ direction in which at least temporarily at least a portion of the medium is pumpable and in the Interior and extends into the steam generator, comprising, wherein the Schuein ⁇ direction comprises the heat exchanger means.
  • a first insulation of the interior and / or a second insulation of the storage vessel may be provided, wherein the first and / or second insulation vorzugswei ⁇ se comprises a vacuum insulation.
  • the heat exchanger device comprises at least three lines, wherein a first Lei ⁇ device from the storage vessel, preferably at least one pump, in the interior and / or in the steam generator, a second line from the interior in extend the storage vessel and a third conduit from the steam generator into the storage vessel.
  • At least one first obturator in the first conduit, at least one second obturator in the second conduit and / or at least one third obturator in the third conduit preferably the first and second or er ⁇ ste and third or the second and third or the first, second and third shut-off integrated in a unit and / or jointly switchable.
  • the heat exchanger device comprises two heat exchangers, one of which extends between the storage vessel and the inner space and the other between the storage vessel and the steam generator.
  • the heater has a first heater in the interior, which is preferably arranged concentrically to the impeller of the fan means, a second heater for the steam generator, which is preferably arranged in the region of the water in the steam generator, and / or a third heater for the storage vessel, which is preferably arranged in the region of the storage medium comprises.
  • the heat exchanger means between the first and the second conduit concentric with the impeller of the fan means, preferably between the impeller and the first heater extends.
  • the heat exchanger device extends between the first and the third line in the water of the steam generator.
  • the invention also proposes that the first, second and / or third heater be connected to a primary heater, comprising at least one power source, at least one device for combustion of auxiliaries and / or at least one external heat carrier, wherein preferably the waste heat of the first, second and / or third heating of the primary heating is at least partially usable.
  • the storage vessel comprises at least two areas, wherein the areas are preferably at least temporarily at least partially connected with each other via a fourth shut-off.
  • the third heater and the first, second and third Lei ⁇ tion with a region of the storage vessel are in communication. It is further proposed with the invention, a control and / or regulating device connected to the heating device, preferably with the first, second and / or third heater, the blower device, the pump, the first Absperrglied, the second Absperrglied, the third Absperrglied, the fourth shut-off, at least one sensing unit, zu ⁇ least one input unit, at least one output unit, a modem and / or the Internet is operatively connected to use.
  • the medium for heat storage is geeig ⁇ net and / or latent heat consumes or releases in a phase transformation
  • the medium preferably comprises a metal, a salt, a polymer, water, steam and / or superheated steam.
  • heating of the medium preferably via the third heating, in cooking phases in which little or no energy is required, and / or cooking pauses, and / or waste heat, such as heat from exhaust air, Kon ⁇ densat, non-condensed portions of a cooking medium, water of the steam generator, steam of the steam generator and / or excess steam, is charged with energy.
  • the invention also relates to a cooking appliance with at least one heat storage device according to the invention.
  • the invention is therefore based on the surprising finding that a heat storage device in the form of a compact heat accumulator can be used in the production of hot air and / or steam for a cooking appliance using at least one heat exchanger device, which is separate from a storage vessel Interior of Gar ⁇ device is arranged, both in the interior of the cooking appliance and the Dampferzeu ⁇ ger extends.
  • a cooking appliance can be operated even without conventional heating in the oven and / or steam generator.
  • This construction opens up the possibility of providing both the storage vessel and the inner space with individual insulation.
  • three lines are provided which enter the storage vessel, namely one for pumping out Storage medium from the storage vessel in the Wä ⁇ neleyer adopted, in the region of the interior and / or the steam generator, and two for returning the Spei ⁇ chermediums from the interior or from the steam generator in the storage vessel, which minimizes the loss of heat energy. Said lines can thereby be made thin, so that an effective operation is possible.
  • the storage vessel into two areas which are separated from one another by a shut-off element, wherein a heating device is arranged in a first area and the heat exchange device extends into the first area, so that, as required, either the entire storage medium in the storage vessel or only the part thereof in the first region is rechargeable with energy or the same energy can be removed.
  • FIG. 1 shows a first cooking appliance according to the invention
  • Fig. 2 shows a second cooking device according to the invention.
  • a cooking device 1 comprises a housing 2 for delimiting an interior, which in turn comprises a cooking chamber 3 and a fan chamber 5 separated from the cooking chamber 3 by an air guiding element 4.
  • a cooking medium 6 is circulatable via an impeller 7.
  • the impeller 7 is driven by an engine 9 via an axle 8.
  • Concentrically around the impeller 7 around a heater 10 is arranged in Geblä ⁇ seraum 5.
  • the interior is insulated by an insulation 11 from the environment.
  • a steam generator 20 is additionally provided, which in turn has a heater 21 for heating water 22. summarizes.
  • the water vapor 22 rising from the water 22 in the event of heating thereof passes via a line 24 into the interior space.
  • a compact heat accumulator 30 is provided.
  • This comprises a storage vessel 31, in which with the interposition of an insulation 32 together with a heater 33, a storage medium 34 is arranged.
  • the storage medium 34 may be solid at room temperature and may only be melted above the room temperature during operation of the heater 33 in order then to be pumpable into a heat exchanger device 35, 36 via a line 37, 38.
  • the sauce (2004)er ⁇ device comprises two areas, namely in the form of the heat exchanger 35, which extends into the steam generator 20, better in the water 22 within the same, and in the form of the heat exchanger 36, in the interior, better in the fan ⁇ space 6 between the impeller 7 and the heater 10 extends.
  • Both the heat exchanger 35 and the heat exchanger 36 is connected via the line 37, 38 with the storage vessel 31 in connection.
  • the conduit 37 includes a first conduit portion 37a which extends out of the storage vessel 31 from the storage medium 34 to then split up into two pumps 39, 40.
  • storage medium 34 may be introduced into the heat exchanger 35 via the conduit portion 37b be pumped to then get over the line area 37c back into the storage vessel 31 can.
  • Storage medium can enter the storage vessel 31 via the second pump 40, with interposition of the line area 38b into the heat exchanger 36 and via the line area 38c.
  • the line region 37a fulfills two functions, namely the sucking in of storage medium both for the heat exchanger 35 and for the heat exchanger 36, which is symbolized in FIG. 1 by the use of the further reference symbol 38a.
  • the cooking appliance 1 is designed to save space;
  • the compact heat accumulator 30 does not cause an oversized additional volume.
  • the heat stored in the compact heat accumulator 30 heat can be transferred lossless either for heating the circulated cooking medium 6 or Er ⁇ generation of steam 23 by the use of only three lines 37 a and 38 a, 37 c and 38 c, which enter the storage vessel 31.
  • the insulation 11 and 32 provide for a further reduction of heat loss.
  • the cooking appliance 1 'shown in FIG. 2 essentially comprises the same components as the cooking appliance 1 of FIG. 1, so that identical parts are identified by the same reference numerals, but provided with an apostrophe.
  • the cooking appliance 1 'according to the invention differs from the cooking appliance 1 in three respects.
  • the storage vessel 31 'in FIG. 2 comprises two regions 31' a and 31 'b which can be separated from one another via a shut-off element 44'.
  • the Auftei ⁇ ment of the storage vessel 31 'in the two Speichergefubb Schemee 3 Ta and 31'b is associated with the advantage that-either the available amount of Speicher ⁇ medium 34' is adjustable, which is a fine adjustment of réellebehenden or congressneh ⁇ allows thermal energy.
  • the complete cooking operation is set via a control and / or regulating device (not shown), including the energy intake and energy output of the storage medium 34, 34'.
  • the control and / or regulating device is connected to the motor 9, 9 ', the heaters 10, 21 and 33, 33', the pumps 39, 40 and 41 'and the shut-off members 42', 43 'and 44' ,
  • the storage medium 34, 34 ' can be charged via the heater 33, 33', the water 22, 22 'and / or the cooking medium 6, 6' with energy.
  • An energy output of the storage medium 34, 34 ' is, simultaneously or successively, both for heating the Garme ⁇ medium 6, 6' and the water 22, 22 'for generating water vapor 23, 23' possible. borrowed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)

Abstract

La présente invention concerne un accumulateur thermique destiné à un appareil de cuisson, comprenant: un boîtier qui peut être refermé par une porte et qui comprend un espace intérieur présentant un espace de cuisson; au moins un dispositif de chauffage qui sert à produire de l'air chaud et/ou de la vapeur à partir d'un générateur de vapeur; et un système de soufflerie qui sert à faire circuler l'air chaud et/ou la vapeur dans l'espace de cuisson. Selon l'invention, l'accumulateur thermique comprend au moins un réservoir d'accumulation destiné à recevoir au moins temporairement une substance fluide au moins au-dessus d'une température donnée, et au moins un dispositif d'échange thermique dans lequel au moins une partie de la substance peut être pompée au moins temporairement, et qui s'étend dans l'espace intérieur et dans le générateur de vapeur, le dispositif de chauffage comprenant le dispositif d'échange thermique. L'invention a également pour objet un appareil de cuisson comprenant au moins un accumulateur thermique de ce type.
EP05791404A 2004-09-13 2005-09-07 Appareil de cuisson comprenant un accumulateur thermique Ceased EP1789730B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004044121A DE102004044121B4 (de) 2004-09-13 2004-09-13 Kombi-Dämpfer mit einer Wärmespeichereinrichtung
PCT/DE2005/001568 WO2006029597A1 (fr) 2004-09-13 2005-09-07 Accumulateur thermique et appareil de cuisson comprenant un accumulateur thermique de ce type

Publications (2)

Publication Number Publication Date
EP1789730A1 true EP1789730A1 (fr) 2007-05-30
EP1789730B1 EP1789730B1 (fr) 2008-03-12

Family

ID=35636739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05791404A Ceased EP1789730B1 (fr) 2004-09-13 2005-09-07 Appareil de cuisson comprenant un accumulateur thermique

Country Status (4)

Country Link
US (1) US20080184986A1 (fr)
EP (1) EP1789730B1 (fr)
DE (2) DE102004044121B4 (fr)
WO (1) WO2006029597A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936285B1 (fr) 2006-12-07 2009-02-11 Rational AG Appareil de cuisson avec accumulateur de chaleur et procédé d'utilisation
DE102007019167B4 (de) 2007-04-20 2011-08-25 Rational AG, 86899 Gargerät mit Wärmespeicher und Abscheidevorrichtung
DE102009006224A1 (de) * 2009-01-27 2010-07-29 Rational Ag Verfahren zur Auswahl und Anordnung von Programmen, Gargerät hierfür und Küchennetzwerk hiermit
KR101623975B1 (ko) * 2009-05-11 2016-05-24 엘지전자 주식회사 조리기기
EP2221545A1 (fr) * 2010-01-08 2010-08-25 V-Zug AG Four de cuisson doté d'un accumulateur thermique latent
US8567386B2 (en) 2011-08-10 2013-10-29 Ty Cox Self-powered air circulating device for use in connection with a radiant heat oven
US9222678B2 (en) 2013-02-25 2015-12-29 General Electric Company Reducing pre-heat time in an oven
GB201911706D0 (en) * 2019-08-15 2019-10-02 Sunphase As Electric heated oven with heat-storing capacity
CN112890574B (zh) * 2021-01-28 2022-03-18 宁波方太厨具有限公司 一种新型蒸汽发生器及蒸制烹饪装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981190A (en) * 1929-04-18 1934-11-20 Kurt Reiss Heating apparatus
CH499070A (de) * 1967-12-06 1970-11-15 Axlander A N A Wärmespeichereinrichtung für den Betrieb von wärmeabgebenden Einheiten mit Temperaturen über 100 Grad Celsius
US4332290A (en) * 1977-01-03 1982-06-01 Skala Stephen F Apparatus for rapid heat transfer and efficient heat storage
DE4302562A1 (de) * 1993-01-29 1994-08-04 Walter Hubert Verfahren und Vorrichtungen zur Einstellung der Temperatur von Lebensmitteln
DE19745827A1 (de) * 1997-10-16 1999-05-06 Bosch Siemens Hausgeraete Wärmeisolierende Wandung
DE19824172A1 (de) * 1998-05-29 1999-12-09 Rational Gmbh Gargerät mit Energiespeicher- und Energieentnahmesystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006029597A1 *

Also Published As

Publication number Publication date
US20080184986A1 (en) 2008-08-07
EP1789730B1 (fr) 2008-03-12
DE102004044121B4 (de) 2007-09-13
DE102004044121A1 (de) 2006-03-30
WO2006029597A1 (fr) 2006-03-23
DE502005003240D1 (de) 2008-04-24

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