DE2621149A1 - Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action - Google Patents

Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action

Info

Publication number
DE2621149A1
DE2621149A1 DE19762621149 DE2621149A DE2621149A1 DE 2621149 A1 DE2621149 A1 DE 2621149A1 DE 19762621149 DE19762621149 DE 19762621149 DE 2621149 A DE2621149 A DE 2621149A DE 2621149 A1 DE2621149 A1 DE 2621149A1
Authority
DE
Germany
Prior art keywords
microwave oven
exhaust air
cooking
oven
fan
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.)
Pending
Application number
DE19762621149
Other languages
German (de)
Inventor
Donald Hellmann
Heinrich Stork
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.)
Stephan Witte GmbH and Co KG
Original Assignee
Stephan Witte GmbH and Co KG
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 Stephan Witte GmbH and Co KG filed Critical Stephan Witte GmbH and Co KG
Priority to DE19762621149 priority Critical patent/DE2621149A1/en
Priority to NO770418A priority patent/NO770418L/en
Priority to SE7701402A priority patent/SE7701402L/en
Priority to LU76745A priority patent/LU76745A1/xx
Priority to NL7701428A priority patent/NL7701428A/en
Priority to FR7703884A priority patent/FR2341101A1/en
Priority to YU00380/77A priority patent/YU38077A/en
Priority to DK61177A priority patent/DK61177A/en
Priority to ES455882A priority patent/ES455882A1/en
Priority to JP1489577A priority patent/JPS52112842A/en
Priority to DD19757077A priority patent/DD128423A5/en
Publication of DE2621149A1 publication Critical patent/DE2621149A1/en
Pending 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
    • H05B6/66—Circuits
    • H05B6/666—Safety circuits
    • 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
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type
    • 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
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels
    • 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
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities
    • F24C15/2014—Removing cooking fumes from oven cavities with means for oxidation of cooking fumes
    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B17/00—Screening
    • G12B17/02—Screening from electric or magnetic fields, e.g. radio waves
    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B17/00—Screening
    • G12B17/06—Screening from heat
    • 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
    • H05B6/6402—Aspects relating to the microwave cavity
    • H05B6/6405—Self-cleaning cavity
    • 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
    • H05B6/642—Cooling of the microwave components and related air circulation systems
    • 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
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • H05B6/766—Microwave radiation screens for windows

Abstract

An oven is contained in an outer casing. A microwave generator in the space between inner and outer casings is connected by a wave guide to a plate in the back of the oven. The oven contains an infra-red grill which is used to brown the food. The door has a double glazed panel the inner leaf of which is impervious to micro-waves. The oven has electric heating elements on all four sides which are switched on to produce an inside temperature sufficiently high to give the self cleaning action.

Description

"Mikrowellenherd" "Microwave oven"

Die Erfindung betrifft einen Mikrowellenherd mit einer pyrolytischen Selbstreinigungseinrichtung im Garraum und einer Abluftabsaugung über einen zwischengeschalteten Katalysator für eine Nachverbrennung, bei dem ein Gebläse Luft aus dem Garraum und dem Raum aschen Garrohr und Herdgehäuse ansaugt und über einen Abluftkanal aus dem Gehäuse herausdrückt nach Patent .........The invention relates to a microwave oven with a pyrolytic Self-cleaning device in the cooking space and an exhaust air extractor via an interposed Catalyst for post-combustion, in which a fan removes air from the cooking space and The ashes of the cooking tube and oven housing are sucked in and via an exhaust duct out of the room Housing pushes out according to patent .........

(Patentanmeldung P 26 05 699.5).(Patent application P 26 05 699.5).

Bei der bekannten pyrolytischen Selbstreinigung in herkömmlichen Backherden wird im Gar-oder Backraum eine Temperatur von ca.With the well-known pyrolytic self-cleaning in conventional baking ovens a temperature of approx.

4750 C. erzeugt, bei der sämtliche Rückstände verascht werden.4750 C. produced in which all residues are incinerated.

Die sich bildenden Gase werden bei einem Herd gemäß der klauptanmeldung in einem Katalysator nachverbrannt. Dazu wird der Garraum des Garrohres abgesaugt. Der Abluftstutzen am. Katalysator soll dabei in einen Abluftkanal eingeführt sein, durch den von einem Gebläse die aus dem Raum zwischen Garrohr und Herdrehäuse angesaugte Luft aus dem Gehäuse herausgedrückt wird.The gases that are formed are used in a stove according to the klauptanmeldung post-burned in a catalyst. To do this, the cooking space of the cooking tube is vacuumed. The exhaust port on the catalytic converter should be inserted into an exhaust duct, by the sucked in by a fan from the space between the cooking tube and the rotating housing Air is forced out of the housing.

Es hat sich gezeigt, daß sich bei einer derartigen Absaugung im Katalysator die für die Nachverbrennung notwendigen Temperaturen nur schwer konstant halten lassen und daß bereits geringe Anderungen in den Abmessungen des Abluftstutzens, des Abluftkanales und auch der Luftzufuhr bereits zu erheblichen Schwankungen der Temperaturen im Katalysator führen, die jedoch mit relativ engen Toleranzen genau eingehalten werden müssen.It has been shown that with such a suction in the catalyst Keeping the temperatures necessary for the afterburning constant is difficult and that even small changes in the dimensions of the exhaust air nozzle, the exhaust duct and the air supply already lead to considerable fluctuations in the Temperatures in the catalytic converter lead, however, with relatively narrow tolerances precisely must be adhered to.

Die Aufgabe der vorliegenden Zusatzerfindung besteht daher darin, die Abluftabsaugung aus dem Garraum über den Katalysator mit der Hachverbrennung zu verbessern.The object of the present additional invention is therefore to the exhaust air extraction from the cooking chamber via the catalytic converter with the top combustion to improve.

Zur Lösung dieser Erfindungsaufgabe ist der Mikrowellenherd der eingangs genannten Art dadurch gekennzeichnet, daß der Abluftstutzen der katalytischen Nachverbrennung in einen Raum aschen Garrohr und Abluftkanal mündet. Nach einer bevorzugten Ausführungsart der Erfindung ist der Abluftkanal mit dem vorgeschalteten Gebläse unter der Gehäusedecke angeordnet, wobei der entgegengesetzt der Ansaugrichtung des Gebläses abgewinkelte Abluftstutzen der katalytischen Nachverbrennung in den Raum unterhalb des Kanales mündet. Der Austritt des Abluftstutzens kann dabei regelbar gedrosselt sein.To solve this problem of the invention, the microwave oven is the initially introduced mentioned type characterized in that the exhaust air connection of the catalytic afterburning A cooking tube and exhaust duct opens into a room. According to a preferred embodiment The invention is the exhaust duct with the upstream fan under the housing cover arranged, the angled opposite to the suction direction of the fan Exhaust port of the catalytic afterburning in the space below of the channel opens. The outlet of the exhaust air nozzle can be throttled in an adjustable manner be.

Bei der erfindungsgemäßen Anordnung des Ansaugstutzens vom Katalysator wird die über das Gebläse angesaugte Luft zunächst in den relativ großen Raum zwischen Abluftkanal und Garrohr hineingesaugt und dort mit der übrigen Umluft vermischt. Geringfügige konstruktive Anderungen wirken sich auf das vom Gebläse erzeugte Druckgefälle relativ geringfügig aus, so daß ständig nahezu die gleiche Luftmenge aus dem Garraum abgesaugt wird.In the inventive arrangement of the intake manifold from the catalytic converter the air sucked in via the fan is initially in the relatively large space between The exhaust duct and cooking tube are sucked in and mixed there with the rest of the circulating air. Slight design changes affect the pressure gradient generated by the fan relatively slightly off, so that almost the same amount of air from the oven is constantly is sucked off.

Anhand eines abgebildeten Ausführungsbeispieles wird die Erfindung im folgenden näher erläutert.The invention is based on an illustrated embodiment explained in more detail below.

Die Abbildung zeigt in einer prinzipiellen Darstellung einen Querschnitt durch einen Mikrowellenherd.The figure shows a basic representation of a cross-section by a microwave oven.

Das geschlossene Blechgehäuse 1 ist an seiner Vorderfront in der Höhle des eingesetzten Garrohres 5 mit einer aufschwenkbaren Tür verschließbar. In Pfeilrichtung kann Außenluft an der Unterseite der Tür 2 in den Garraum 51 des Garrohres 5 eintreten.The closed sheet metal housing 1 is on its front in the cave of the cooking tube used 5 can be closed with a swing-open door. In the direction of the arrow Outside air can enter the cooking chamber 51 of the cooking tube 5 on the underside of the door 2.

Insbesondere während der pyrolytischen Selbstreinigung, bei der im Garraum 51 Temperaturen über 475 C eintreten, treten um das mit der Isolierung 57 verkleidete Garrohr 51 relativ hohe Temperaturen auf, denen andere Aggregate nicht ausgesetzt werden dürfen. Die dem Garraum 15 zugeführte Luft während dieser Reinigung muß abgesaugt werden. Daher ist im Raum 15 oberhalb des Garrohres 5 ein Gebläse 14 angeordnet, welches Luft zwischen dem Gehäuse 1 und dem Garrohr 5 und aus dem Garraum 51 ansaugt und durch den Abluftkanal 11, der an der Gehäusedecke 16 befestigt ist, nach außen durch die Lüftungsleiste 4 drückt.Especially during pyrolytic self-cleaning, in which im Cooking chamber 51 temperatures above 475 C occur around the insulation 57 Covered cooking tube 51 at relatively high temperatures, which other units do not may be exposed. The air supplied to the cooking chamber 15 during this cleaning must be vacuumed. Therefore, in the space 15 above the cooking tube 5 a Fan 14 arranged, which air between the housing 1 and the cooking tube 5 and Sucks from the cooking chamber 51 and through the exhaust duct 11, which is on the housing cover 16 is attached, pushes outward through the ventilation strip 4.

Die während der pyrolytischen Reinigung auftretenden Verbrennungsgase werden im zwischengeschalteten Katalysator 55 nachverbrannt.The combustion gases occurring during pyrolytic cleaning are afterburned in the intermediate catalyst 55.

Auf diesem Katalysator ist ein Abluftstutzen 56 aufgesetzt, der durch die zusätzliche, nicht gezeigte Isolierung hindurchragt und dessen Ende entgegengesetzt der Ansaugrichtung des Gebläses 14 abgewinkelt ist. Dieses abgewinkelte Ende 58 mündet in den Raum 15 zwischen dem Abluftkanal 11 und dem Garrohr 5. Am Ende des Abluftstutzens ist eine Drosselscheibe 59 vorgesehen, über die die abzusaugende Abluftmenge einregulierbar ist in Anpassung an das Druckgefälle des Gebläses und die unterschiedlichen konstruktiven Gegebenheiten.An exhaust air connection 56 is placed on this catalytic converter, through which the additional, not shown insulation protrudes and its end opposite the suction direction of the fan 14 is angled. This angled end 58 opens into the space 15 between the exhaust duct 11 and the cooking tube 5. At the end of the A throttle disk 59 is provided for the exhaust air connection, through which the The amount of exhaust air can be adjusted to match the pressure gradient of the blower and the different structural conditions.

LeerseiteBlank page

Claims (3)

Patentansprüche Mikrowellenherd mit einer pyrolytischen Selbstreinigungseinrichtung im Garraum und einer Abluftabsaugung über einen zwischengeschalteten Katalysator für eine Nachverbrennung, bei dem ein Gebläse Luft aus dem Garraum und dem Raum zwischen Garrohr und Herdgehäuse ansaugt und über einen Abluftkanal aus dem Gehäuse herausdrückt nach Patent (Patentanmeldung P 26 05 695.5) dadurch gekennzeichnet, daß der Abluftstutzen (cd6) der katalytischen Nachverbrennung (55) in einen Raum (15) zwischen Garrohr (5) und Abluftkanal (11) mündet. Claims microwave oven with a pyrolytic self-cleaning device in the cooking space and an exhaust air extraction system via an intermediate catalytic converter for post-combustion, in which a fan removes air from the cooking space and the room sucks in between the cooking tube and the oven housing and out of the housing via an exhaust air duct expresses according to patent (patent application P 26 05 695.5) characterized in that that the exhaust air connection (cd6) of the catalytic afterburning (55) in a room (15) opens between the cooking tube (5) and exhaust air duct (11). 2c Mikrowellenherd nach Anspruch 1, dadurch gekennzeichnet, daß der Abluftkanal (11) mit dem vorgeschalteten Gebläse (14) unter der Gehäusedecke (16) angeordnet ist, wobei der entgegengesetzt der Ansaugrichtung des Gebläses abgewinkelte Abluftstutzen (56,58) der katalytischen Nachverbrennung (55) in den Raum (15) unterhalb des Kanales (11) mündet.2c microwave oven according to claim 1, characterized in that the Exhaust air duct (11) with the upstream fan (14) under the housing cover (16) is arranged, the opposite to the suction direction of the fan angled Exhaust connection (56,58) of the catalytic post-combustion (55) in the space (15) below of the channel (11) opens. 3. Mikrowellenherd nach Anspruch 1, dadurch gekennzeichnet, daß der Austritt des Abluftstutzens (56,58) gedrosselt ist.3. Microwave oven according to claim 1, characterized in that the The outlet of the exhaust air connection (56,58) is throttled.
DE19762621149 1976-02-13 1976-05-13 Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action Pending DE2621149A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DE19762621149 DE2621149A1 (en) 1976-05-13 1976-05-13 Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action
NO770418A NO770418L (en) 1976-02-13 1977-02-09 MICROWAVE STOVE.
SE7701402A SE7701402L (en) 1976-02-13 1977-02-09 MICROWAVE
LU76745A LU76745A1 (en) 1976-02-13 1977-02-10
NL7701428A NL7701428A (en) 1976-02-13 1977-02-10 ELECTRIC STOVE.
FR7703884A FR2341101A1 (en) 1976-02-13 1977-02-11 Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action
YU00380/77A YU38077A (en) 1976-02-13 1977-02-11 Microwave stove
DK61177A DK61177A (en) 1976-02-13 1977-02-11 MICROWAVE
ES455882A ES455882A1 (en) 1976-02-13 1977-02-12 Electronic range
JP1489577A JPS52112842A (en) 1976-02-13 1977-02-14 Electronic range
DD19757077A DD128423A5 (en) 1976-02-28 1977-02-25 MICROWAVE OVEN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762621149 DE2621149A1 (en) 1976-05-13 1976-05-13 Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action

Publications (1)

Publication Number Publication Date
DE2621149A1 true DE2621149A1 (en) 1977-12-01

Family

ID=5977814

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762621149 Pending DE2621149A1 (en) 1976-02-13 1976-05-13 Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action

Country Status (1)

Country Link
DE (1) DE2621149A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921995A1 (en) * 1978-06-13 1979-12-20 Bosch Siemens Hausgeraete MICROWAVE HEATER
DE3346019A1 (en) * 1983-12-20 1985-06-20 Bosch Siemens Hausgeraete Baking oven
DE4238660A1 (en) * 1992-11-16 1994-06-09 Bosch Siemens Hausgeraete Oven, in particular with a device for pyrolytic self-cleaning

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921995A1 (en) * 1978-06-13 1979-12-20 Bosch Siemens Hausgeraete MICROWAVE HEATER
DE3346019A1 (en) * 1983-12-20 1985-06-20 Bosch Siemens Hausgeraete Baking oven
DE4238660A1 (en) * 1992-11-16 1994-06-09 Bosch Siemens Hausgeraete Oven, in particular with a device for pyrolytic self-cleaning
US5500508A (en) * 1992-11-16 1996-03-19 Bosch-Siemens Hausgeraete Gmbh Oven, particularly with an apparatus for pyroltic self cleaning

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