DE3236952A1 - Device for the automatic cooking of foodstuffs in the heating space of a microwave apparatus - Google Patents

Device for the automatic cooking of foodstuffs in the heating space of a microwave apparatus

Info

Publication number
DE3236952A1
DE3236952A1 DE19823236952 DE3236952A DE3236952A1 DE 3236952 A1 DE3236952 A1 DE 3236952A1 DE 19823236952 DE19823236952 DE 19823236952 DE 3236952 A DE3236952 A DE 3236952A DE 3236952 A1 DE3236952 A1 DE 3236952A1
Authority
DE
Germany
Prior art keywords
weight
heating space
food
sensor
foodstuffs
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
DE19823236952
Other languages
German (de)
Inventor
Fritz Dipl Ing Brendel
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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
Priority claimed from DE19823205124 external-priority patent/DE3205124A1/en
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19823236952 priority Critical patent/DE3236952A1/en
Publication of DE3236952A1 publication Critical patent/DE3236952A1/en
Granted legal-status Critical Current

Links

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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/6464—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using weight sensors
    • 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
    • H05B6/6458—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using humidity or vapor sensors

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

Device for the automatic cooking of foodstuffs in the heating space of a microwave apparatus, having a sensor arranged in the flow path of the air discharged from the heating space, and a further sensor arranged in the feed air path for the heating space. To determine the initial weight of the material to be cooked and also the weight loss of the material to be cooked during the cooking process, a balance or a weight sensor is provided, which is designed as an inductive displacement transducer in the manner of a differential transformer.

Description

Einrichtung zum automatischen Garen von Nahrungs Device for automatic cooking of food

mitteln im Heizraum eines Mikrowellengerätes Zusatz zum Patent (Patentanmeldung P 32 05 124.7 vom 12.02.1982). agents in the boiler room of a microwave device Addition to the patent (patent application P 32 05 124.7 of February 12, 1982).

Die Erfindung betrifft eine Einrichtung zum automatischen Garen von Nahrungsmitteln im Heizraum eines Mikrowellengeräts nach dem Hauptpatent ......... (Patentanmeldung P 32 05 124.7) entsprechend dem Oberbegriff des Hauptanspruchs.The invention relates to a device for the automatic cooking of Food in the boiler room of a microwave oven according to the main patent ......... (Patent application P 32 05 124.7) according to the preamble of the main claim.

Ein zufriedenstellendes Garergebnis ist von mehreren Parametern, wie z.B. Menge bzw. Gewicht, Art, Zustand des Gargutes, abhängig. Insbesondere aber hat das Anfangsgewicht des Gargutes und dessen Gewichtsverlust während des Garvorganges einen großen Einfluß auf das Garergebnis. Um nun sämtliche wesentlichen Faktoren zur Erzielung eines einwandfreien Garergebnis laufend zuverlässig zu erfassen, ist bei der Einrichtung nach dem Hauptpatent ,(Patentanmeldung P 32 05 124.7) neben den beiden im Luftströmungsweg liegenden Sensoren eine Waage bzw. ein Gewichtsensor zur Erfassung des Gargut-Anfangsgewichtes sowie des relativen Gewichtsverlustes während des Garvorganges vorgesehen.A satisfactory cooking result depends on several parameters, such as e.g. quantity or weight, type, condition of the food, depending on. But in particular has the initial weight of the food and its weight loss during the cooking process a great influence on the cooking result. To now all the essential factors must be recorded continuously and reliably in order to achieve a perfect cooking result in the device according to the main patent, (patent application P 32 05 124.7) next the two sensors located in the air flow path are a scale or a weight sensor for recording the initial weight of the food to be cooked and the relative weight loss provided during the cooking process.

Der vorliegenden Zusatzerfindung liegt nun die Aufgabe zugrunde, einen für den genannten Zweck besonders gut geeig- neten Gewichtsensor anzugeben.The present additional invention is now based on the task of a particularly well suited for the stated purpose neten weight sensor to specify.

Die Lösung dieser Aufgabe gemäß der Erfindung ist dem kennzeichnenden Teil des Patentanspruchs 1 zu entnehmen.The solution to this problem according to the invention is the characteristic one Part of claim 1 can be found.

Der vorgeschlagene Gewichtsensor arbeitet besonders zuverlässig und zeichnet sich durch eine raumsparende Ausgestaltung aus, so daß der Einbau bei Einrichtungen der in- Rede stehenden Art ohne nennenswerte Umkonstruktion des Heizraumes durchführbar ist. Weitere Vorteile sind darin zu sehen, daß dieser Gewichtsensor temperatur-kompensierende Eigenschaften aufweist und schon bei niedriger Frequenz hohe Empfindlichkeit besitzt. Eine Auflösung der Cewichtsänderung von ( 5g (Gramm) ist leicht zu erreichen. Die Auflösung kann durch Frequenzerhöhung noch weiter gesteigert werden.The proposed weight sensor works particularly reliably and is characterized by a space-saving design, so that the installation in facilities of the type in question can be carried out without any significant redesign of the boiler room is. Further advantages can be seen in the fact that this weight sensor is temperature-compensating Has properties and has high sensitivity even at low frequency. A resolution of the change in weight of (5g (grams)) is easy to achieve Resolution can be increased even further by increasing the frequency.

Ein Ausführungsbeispiel der -Erfindung ist in der Zeichnung dargestellt und wird an Hand dieser nachfolgend näher erläutert: Es zeigen: Fig. 1 den Aufbau eines Gewichtsensor und Fig. 2 eine sogenannte elektrische Spannungsverdopplerschaltung für diesen Gewichtsensor.An embodiment of the invention is shown in the drawing and is explained in more detail below with reference to this: FIG. 1 shows the structure a weight sensor and FIG. 2 a so-called electrical voltage doubler circuit for this weight sensor.

Der in Fig. 1 dargestellte Gewichtsensor 1 besteht aus einem zylinderartigen Tragkörper 2, in dem ein Eisenkern 3 verschiebbar untergebracht ist. Am Eisenkern 3 ist eine Zugstange 4 angebracht, die im Zentrum eines im Boden des Heizraumes eines Mikrowellengerätes an vier Punkten federnd gehalterten bzw. abgestützten Gargutträgers angreift. Bei jeder Gewichtsänderung des Gargutes wird damit zwangsläufig über die Zugstange 4 der Eisenkern 3 im zylinderartigen Tragkörper 2 entsprechend verschoben. D-em Tragkörper 2 sind zwei in Reihe geschaltete Senkundär-Spulen 5, 5' und eine Primär-Spule 6 zugeordnet. Die eine Sekundär-Spule 5 ist zwischen zwei Dioden 7, 7' und die andere Sekundär-Spule 5' zwischen zwei Kondensatoren 8, 8' angelegt. Diese Schaltung arbeitet in der Weise, daß zu jeder Halbwelle entweder der Kondensator 8 über die leitende Diode 7 oder der Kondensator 8 über die Diode 7' geladen wird, so daß letzten Endes die periodische Ladung von Kondensator 8' nach jeweils 20 ms die Brummfrequenz bestimmt. Die entsprechenden Ausgangssignale werden einem programmierbaren Mikrocomputer 9 zur Auswertung zugeführt, wie es in dem Patent - (Patentanmeldung P 32 05 124.7) näher beschrieben ist.The weight sensor 1 shown in Fig. 1 consists of a cylinder-like one Support body 2 in which an iron core 3 is slidably housed. At the iron core 3 a tie rod 4 is attached, which is in the center of a in the floor of the boiler room a microwave oven at four points resiliently held or supported food carrier attacks. Every time the weight of the food changes, the Pull rod 4 of the iron core 3 in the cylinder-like support body 2 shifted accordingly. D-em support body 2 are two secondary coils connected in series 5, 5 'and a primary coil 6 assigned. The one secondary coil 5 is between two diodes 7, 7 'and the other secondary coil 5' between two capacitors 8, 8 'created. This circuit works in such a way that for each half-wave either the capacitor 8 via the conductive diode 7 or the capacitor 8 via the diode 7 'is charged, so that in the end the periodic charge of capacitor 8' the hum frequency is determined every 20 ms. The corresponding output signals are fed to a programmable microcomputer 9 for evaluation, as shown in FIG the patent - (patent application P 32 05 124.7) is described in more detail.

Claims (2)

Patentansprüche 1. Einrichtung zum automatischen Garen von Nahrungsmitteln im Heizraum eines Mikrowellengerätes, mit einem Sensor, der im Strömungsweg der aus dem Heizraum abströmenden Luft angeordnet ist, sowie einem weiteren im Zuluftweg des Heizraumes angeordneten Sensor, und zum Erfassen des Gargut-Anfangsgewichtes sowie der Gewichtsveränderung während des Garvorganges für das Gargut eine Waage bzw. ein Gewichtsensor vorgesehen ist, nach Patent ........ (Patentanmeldung P 32 05 124), dadurch gekennzeichnet, daß als Waage bzw. Claims 1. Device for automatically cooking food in the boiler room of a microwave oven, with a sensor located in the flow path of the Air flowing out of the boiler room is arranged, as well as another one in the supply air path of the heating room arranged sensor, and for detecting the initial weight of the food as well as the change in weight during the cooking process for the food a scale or a weight sensor is provided, according to patent ........ (patent application P 32 05 124), characterized in that the scales or Gewichtsensor ein induktiver Wegaufnehmer nach Art eines Differentialtransformators (1) dient.Weight sensor an inductive displacement transducer in the manner of a differential transformer (1) serves. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet daß als Schaltung für den Gewichtsensor eine an sich bekannte Spannungsverdopplerschaltung Verwendung findet.2. Device according to claim 1, characterized in that as a circuit a known voltage doubler circuit is used for the weight sensor finds.
DE19823236952 1982-02-12 1982-10-06 Device for the automatic cooking of foodstuffs in the heating space of a microwave apparatus Granted DE3236952A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823236952 DE3236952A1 (en) 1982-02-12 1982-10-06 Device for the automatic cooking of foodstuffs in the heating space of a microwave apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823205124 DE3205124A1 (en) 1982-02-12 1982-02-12 Device and method for automatic cooking of foods in a microwave appliance
DE19823236952 DE3236952A1 (en) 1982-02-12 1982-10-06 Device for the automatic cooking of foodstuffs in the heating space of a microwave apparatus

Publications (1)

Publication Number Publication Date
DE3236952A1 true DE3236952A1 (en) 1984-04-12

Family

ID=25799576

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823236952 Granted DE3236952A1 (en) 1982-02-12 1982-10-06 Device for the automatic cooking of foodstuffs in the heating space of a microwave apparatus

Country Status (1)

Country Link
DE (1) DE3236952A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491619A2 (en) * 1990-12-18 1992-06-24 Lg Electronics Inc. Method and apparatus for automatic cooking in a microwave oven
TR25844A (en) * 1991-12-27 1993-09-01 Gold Star Co METHOD AND DEVICE FOR AUTOMATIC COOKING IN A MICROWAVE OVEN.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2622308A1 (en) * 1975-05-20 1976-12-02 Matsushita Electric Ind Co Ltd DEVICE FOR REGULATING THE HEATING TIME THROUGH HUMIDITY DETECTION
DE2850094A1 (en) * 1977-11-21 1979-05-23 Gen Electric DIGITAL LEVELING SCALE
DE2935862A1 (en) * 1978-09-05 1980-03-13 Sharp Kk COOKER
DE2706367B2 (en) * 1976-02-17 1980-04-10 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Device for regulating the heating for an oven, in particular a microwave oven
DE2943977A1 (en) * 1978-11-06 1980-05-08 Tokyo Shibaura Electric Co MICROWAVE OVEN / MICROWAVE OVEN
FR2650024A1 (en) * 1989-07-21 1991-01-25 Ferte Sous Jouarre Const Elect Device for locking and unlocking an emergency exit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2622308A1 (en) * 1975-05-20 1976-12-02 Matsushita Electric Ind Co Ltd DEVICE FOR REGULATING THE HEATING TIME THROUGH HUMIDITY DETECTION
DE2706367B2 (en) * 1976-02-17 1980-04-10 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Device for regulating the heating for an oven, in particular a microwave oven
DE2850094A1 (en) * 1977-11-21 1979-05-23 Gen Electric DIGITAL LEVELING SCALE
DE2935862A1 (en) * 1978-09-05 1980-03-13 Sharp Kk COOKER
DE2943977A1 (en) * 1978-11-06 1980-05-08 Tokyo Shibaura Electric Co MICROWAVE OVEN / MICROWAVE OVEN
FR2650024A1 (en) * 1989-07-21 1991-01-25 Ferte Sous Jouarre Const Elect Device for locking and unlocking an emergency exit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491619A2 (en) * 1990-12-18 1992-06-24 Lg Electronics Inc. Method and apparatus for automatic cooking in a microwave oven
EP0491619A3 (en) * 1990-12-18 1992-12-09 Goldstar Co. Ltd. Method and apparatus for automatic cooking in a microwave oven
US5283410A (en) * 1990-12-18 1994-02-01 Goldstar Co., Ltd. Method and apparatus for automatic cooking in a microwave oven
TR25844A (en) * 1991-12-27 1993-09-01 Gold Star Co METHOD AND DEVICE FOR AUTOMATIC COOKING IN A MICROWAVE OVEN.

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