EP0618408B1 - Appareil de chauffage fermable ayant un espace de traitement avec réglage de température pour une zone de température déterminable - Google Patents

Appareil de chauffage fermable ayant un espace de traitement avec réglage de température pour une zone de température déterminable Download PDF

Info

Publication number
EP0618408B1
EP0618408B1 EP94102250A EP94102250A EP0618408B1 EP 0618408 B1 EP0618408 B1 EP 0618408B1 EP 94102250 A EP94102250 A EP 94102250A EP 94102250 A EP94102250 A EP 94102250A EP 0618408 B1 EP0618408 B1 EP 0618408B1
Authority
EP
European Patent Office
Prior art keywords
control
regulating
heating
temperature
heating apparatus
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.)
Expired - Lifetime
Application number
EP94102250A
Other languages
German (de)
English (en)
Other versions
EP0618408A3 (fr
EP0618408A2 (fr
Inventor
Uwe Dipl.-Ing. Has
Wolfgang Dipl.-Ing. Beifuss
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0618408A2 publication Critical patent/EP0618408A2/fr
Publication of EP0618408A3 publication Critical patent/EP0618408A3/fr
Application granted granted Critical
Publication of EP0618408B1 publication Critical patent/EP0618408B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/647—Aspects related to microwave heating combined with other heating techniques
    • H05B6/6482—Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors

Definitions

  • the invention relates to a lockable heater with a treatment room for e.g. sintering, drying, Cooking, with control devices for definable temperature ranges are selectable, at least one in the treatment room located thermal heater that can be combined with microwave energy.
  • the object of the invention is a control device for a develop a lockable heater with a treatment room, with several definable cooking space temperature ranges adjustable below and above 100 ° C Should be mean.
  • the invention solves this problem in that a control device depending on the relative dielectric constant ⁇ R of the material to be treated is an initial microwave energy dosed that the control device a time-dependent Cycle ratio for the thermal heating device specifies that the control device depending on the Treatment procedure and the target temperature for the thermal Heating device specifies a heating phase, and that the Control device for a treatment goods specific and temperature sensor adapted Minimum time between two heating phases the thermal heater switches off.
  • control device with a control unit 1, an input bus 2, a control bus 3, an output bus 4, a mode selector 11, a Bit generator 12, a temperature setpoint generator 13, one Weight input unit 14, a temperature sensor 21, a Moisture sensor 22, a gas sensor 23, a timer 31, one Heater 32, a microwave generator 33 and a turntable unit 34 shown.
  • the control unit 1 which is a microprocessor or at least can be part of it, is via the input bus 2 with external Setpoint data fed.
  • the input bus 2 is directed towards the control unit 1.
  • the addressable by the control unit 1 via the output bus and units that can be fed with data, such as timer 31, Heater 32, microwave generator 33, turntable drive 34 and other units that can be started by output commands addressed and activated by control unit 1.
  • On the Control bus 3, which is bidirectional, is primarily sensors with the control unit 1, for example a temperature sensor 20, the moisture sensor 22, the gas sensor 23 connected.
  • the hardware devices of the control unit 1 are programmable and can interact with sensor technology control various processes in the treatment room. Especially can the temperature exposure via temperature sensors and gas sensors the goods to be treated are controlled, the solution according to the invention being below temperature ranges and switches off above 100 ° C if it depends on the type of goods to be treated and the required heat treatment to maintain a constant temperature and fast temperature settling behavior arrives. About the process of self-heating the material to be treated to accelerate, the control device becomes dependent from the relative dielectric constant ⁇ R of the material to be treated specify a starting microwave energy dose. This expediently occurs during the transient response of thermal heaters.
  • the Control unit 1 can also be present through tests Empirical values, the dosing of a microwave initial energy for different treatment goods, save and, if selected, via the input bus 2 by starting the microwave generator 33 via the Bring the output bus 4 into the treatment room.
  • the regulation for definable temperature ranges is based on the fact that After the transient response, the material to be treated is preheated as far as possible is that the microwave initial energy is turned off can be, and the thermal heater the necessary Maintains constant temperature. For different ones Treatments can be useful, only microwave energy to use, or entirely on this to renounce. For the required constant temperature of the specified temperature range, it is necessary to the thermal Heating 32 in compliance with time conditions the respective treatment process must be adjusted, clocked to be able to switch on and off.
  • the entire control device via the control unit specifies a heating time.
  • the entire control process is needed one depending on the operating mode and the Set temperature minimum switch-off time between two heating times of thermal heater 32, the minimum should be so long that the settling time of the temperature sensor is taken into account.
  • the Control unit 1 activates the heating time timer 31, the Heating time timer 31 thus directly with the thermal heating device 32 is connected and controls it. It switches the heating time timer 31 is the clocked thermal heating device 32 for a predetermined time.
  • the control unit 1 compares the input values of the temperature sensor 21 with those of a temperature setpoint generator 13, correspondingly the predetermined control quality of the heating time 31 set remains or is reset.
  • the control unit 1 detects via a temperature-target-actual value comparison the steady state and controls it an optimized on-off control cycle of the thermal heating device 32.
  • the control unit 1 is a special microprocessor trained, the almost all control processes of the lockable heater is sensor-controlled. According to of Figures 2 and 3 are control curves for temperature setpoints of 60 ° C, the different operating modes in the Have treatment room as a parameter.
  • FIG. 2 is a control curve for hot air operation and a temperature setpoint of 60 ° C is shown.
  • the dashed The graph is an image of previous control procedures and shows strong deviations from the control value during the steady state Condition. The following control quality is the result with strong overshoots above the temperature setpoint of 60 ° C.
  • the solid control curve represents represents the image of the solution according to the invention. It is without further recognizable that the strong overshoot with in the Result of a relatively large deviation in the steady control range no longer occurs. Rather, it's a much improved one Regular constancy around the setpoint with only a small settling peak reached. At the same time there is a significant reduction the excess temperature, the so-called heating tip, recognizable.
  • the solution according to the invention has the advantage that a temperature control based on a predetermined target temperature almost completely avoiding a temperature rise behavior expires. At the latest after the fifth overshoot the switched on control device can on the specified target temperature was done as one Constant control can be called. The greatly diminished The overshoot and undershoot are then regulated in the steady state Condition back to ⁇ 3 ° C. With the invention Control device it is therefore possible for different definable temperature ranges relatively constant, the given Setpoint corresponding temperature distributions in the treatment room to achieve, and thus reproducible sintering, To guarantee drying and cooking processes.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Control Of Temperature (AREA)
  • Furnace Details (AREA)

Claims (5)

  1. Appareil de chauffage fermable ayant un espace de traitement destiné par exemple au frittage, au séchage, à la cuisson, des dispositifs de réglage étant sélectionnables pour des gammes de température déterminables, dispositifs de réglage qui commandent au moins un dispositif de chauffage thermique placé dans l'espace de traitement et pouvant être combiné avec de l'énergie à micro-ondes, caractérisé en ce que le dispositif de réglage dose une énergie initiale à micro-ondes en fonction de la permittivité relative (s R) du produit à traiter, en ce que le dispositif de réglage détermine un rapport de synchronisation variable en temps pour le dispositif de chauffage thermique, en ce que le dispositif de réglage fixe une phase de temps de chauffage pour le dispositif de chauffage thermique en fonction de la procédure de traitement et de la température de consigne et en ce que le dispositif de réglage coupe le dispositif de chauffage thermique entre deux phases de chauffage, pour une durée minimale spécifique au produit à traiter et adaptée au capteur de température.
  2. Appareil de chauffage fermable selon la revendication 1, caractérisé en ce que le dosage de l'énergie initiale à micro-ondes réalisé par le dispositif de réglage est commandé par capteur.
  3. Appareil de chauffage fermable selon la revendication 1, caractérisé en ce qu'une unité de commande (1) active via un bus de sortie (4) une horloge de temps de chauffage (31) qui branche et débranche le dispositif de chauffage (32) synchronisable dans l'espace de traitement par commande des phases de chauffage.
  4. Appareil de chauffage fermable selon les revendications 1, 3, caractérisé en ce que l'unité de commande (1) lie les valeurs de consigne placées sur un bus d'entrée (2) - par exemple mode, poids du produit à traiter, température de consigne - avec les données de réglage placées sur un bus de commande (3) - par exemple données du capteur de température, données du capteur d'humidité, données du capteur de gaz - pour obtenir des données de réglage et de sortie, et sélectionne via le bus de sortie (4) par exemple une horloge (31), un chauffage (32), un générateur de micro-ondes (33) et un ventilateur (34) en vue d'un jeu de réglage par tout ou rien optimisé d'une moyenne de température sélectionnée.
  5. Appareil de chauffage fermable selon la revendication 1, caractérisé en ce que l'unité de commande (1) fait partie d'un microprocesseur particulier.
EP94102250A 1993-02-19 1994-02-14 Appareil de chauffage fermable ayant un espace de traitement avec réglage de température pour une zone de température déterminable Expired - Lifetime EP0618408B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4305211 1993-02-19
DE4305211A DE4305211C2 (de) 1993-02-19 1993-02-19 Verschließbares Heizgerät mit einem Behandlungsraum mit Temperaturregelung

Publications (3)

Publication Number Publication Date
EP0618408A2 EP0618408A2 (fr) 1994-10-05
EP0618408A3 EP0618408A3 (fr) 1995-01-04
EP0618408B1 true EP0618408B1 (fr) 1999-04-21

Family

ID=6480920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102250A Expired - Lifetime EP0618408B1 (fr) 1993-02-19 1994-02-14 Appareil de chauffage fermable ayant un espace de traitement avec réglage de température pour une zone de température déterminable

Country Status (3)

Country Link
EP (1) EP0618408B1 (fr)
DE (2) DE4305211C2 (fr)
ES (1) ES2132265T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429074A1 (de) * 1994-08-17 1996-02-22 Abb Patent Gmbh Verfahren und Einrichtung zur Leistungsregelung eines Mikrowellen-Sinterofens
DE102014206277A1 (de) * 2014-04-02 2015-10-08 BSH Hausgeräte GmbH Hausgerätevorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102617A (en) * 1980-01-18 1981-08-17 Matsushita Electric Ind Co Ltd Heating cooker
DE3226338C2 (de) * 1982-04-02 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Anordnung zum Darstellen von Kurven auf dem Bildschirm eines nach dem Zeilenrasterverfahren arbeitenden Sichtgerätes
FR2606578B1 (fr) * 1986-11-07 1995-03-31 Dietrich & Cie De Procede et dispositif pour la commande des circuits de puissance d'une enceinte de cuisson mixte
US5075528A (en) * 1989-01-10 1991-12-24 International Flavors & Fragrances Inc. Apparatus for carrying out microwave browning process

Also Published As

Publication number Publication date
DE59408126D1 (de) 1999-05-27
EP0618408A3 (fr) 1995-01-04
DE4305211A1 (de) 1994-08-25
ES2132265T3 (es) 1999-08-16
DE4305211C2 (de) 2001-10-18
EP0618408A2 (fr) 1994-10-05

Similar Documents

Publication Publication Date Title
DE69832329T2 (de) Verfahren und Vorrichtung zur Regelung eines elektrischen Heizelementes
EP0945773B1 (fr) Procédé d'actionnement d'un appareil de chauffage électrique
EP0596263B1 (fr) Four de cuisson
EP0050240B1 (fr) Dispositif de commande pour l'alimentation en énergie de cuisinières électriques
EP1391141B1 (fr) Procede et dispositif pour limiter et/ou reguler la temperature superficielle d'une plaque de cuisson
EP1611396B1 (fr) Procede de fonctionnement d'un four de cuisson
EP2174199B1 (fr) Procédé pour la conduite économe en énergie d'un processus de traitement d'aliments ou d'un processus de nettoyage d'une chambre de traitement et appareil de cuisson correspondant
EP1394472B1 (fr) Procédé de fonctionnement d'un appareil de cuisson
DE19711291A1 (de) Verfahren zur Regelung thermischer Strecken und Heizeinrichtungen in Haushaltgeräten
EP0618408B1 (fr) Appareil de chauffage fermable ayant un espace de traitement avec réglage de température pour une zone de température déterminable
DE3834909A1 (de) Automatisches kochsteuersystem fuer einen mikrowellenherd
CH682345A5 (en) Controlling heating of rooms for economy
EP2280226A2 (fr) Procédé de fonctionnement d'un four de cuisson et four de cuisson
EP1273852B2 (fr) Procédé de fonctionnement d'un appareil de cuisson et appareil de cuisson
DE4029181A1 (de) Beheizung von backoefen
EP0579917A2 (fr) Dispositif de contrôle pour un appareil de cuisson verrouillable
DE4223653C2 (de) Verfahren zum Regeln von Garvorgängen sowie dazugehöriger Backofen
EP0203293A1 (fr) Circuit de commande pour un poêle électrique d'un sauna
DE10027299A1 (de) Verfahren zur Temperaturregelung eines Backofens und Backofen
EP1611492B1 (fr) Procede de commande d'un processus de cuisson
DE4305212A1 (de) Verschließbares Gargerät mit Temperaturregelung für einen unteren Temperaturbereich
EP0280752A1 (fr) Méthode et appareil pour la régulation de la température d'une enceinte
DE2656316C3 (de) Vorwärmofen, insbesondere fur zahntechnische Zwecke
DE4415532C2 (de) Verfahren zur Erhitzung eines Gutes
DE3919136A1 (de) Verfahren zur regelung eines stetigen stellgliedes in einer zentralheizungsanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: H05B 6/68

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19950612

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19980929

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990505

REF Corresponds to:

Ref document number: 59408126

Country of ref document: DE

Date of ref document: 19990527

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2132265

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040202

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20040209

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040218

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050214

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050215

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20051031

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20050215

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090228

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901