EP3646671B1 - Mikrowellenbackofen mit extra-niederspannungs-sicherheitsmechanismus - Google Patents

Mikrowellenbackofen mit extra-niederspannungs-sicherheitsmechanismus Download PDF

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Publication number
EP3646671B1
EP3646671B1 EP17734975.0A EP17734975A EP3646671B1 EP 3646671 B1 EP3646671 B1 EP 3646671B1 EP 17734975 A EP17734975 A EP 17734975A EP 3646671 B1 EP3646671 B1 EP 3646671B1
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EP
European Patent Office
Prior art keywords
switch
door
microwave oven
microwave
safety
Prior art date
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Active
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EP17734975.0A
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English (en)
French (fr)
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EP3646671A1 (de
Inventor
Andreas RANALDER
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.)
V-Zug AG
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V-Zug AG
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Publication date
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Publication of EP3646671A1 publication Critical patent/EP3646671A1/de
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    • 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
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus
    • H05B6/6417—Door interlocks of the microwave heating apparatus and related circuits

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Electric Ovens (AREA)

Claims (10)

  1. Ein Mikrowellenherd umfassend
    eine Steuereinheit (10),
    eine Garkammer (3),
    eine Tür (2), die die Garkammer (3) verschliesst,
    einen Mikrowellengenerator (8), der mit der Garkammer (3) gekoppelt ist und mindestens einen Halbleiterschalter (T1 - T6) aufweist,
    eine Treiberschaltung (14), die so angeschlossen ist, dass sie Steuersignale an den mindestens einen Halbleiterschalter (T1 - T6) liefert,
    eine Treiberstromversorgung (18), die die Treiberschaltung (14) mit Kleinspannungsenergie versorgt, und
    einen ersten und einen zweiten Sicherheitsschalter (S1 - S3), die durch Öffnen und Schliessen der Tür (2) mechanisch betätigbar sind, wobei die Sicherheitsschalter (S1 - S3) in Reihe in der Versorgungsleitung (26) zwischen der Treiberstromversorgung (18) und der Treiberschaltung (14) angeordnet sind, wobei der erste Sicherheitsschalter (S1) so angeordnet und strukturiert ist, dass er sich in einer ersten Position der Tür (2) öffnet, während die Tür (2) geöffnet wird,
    wobei der Mikrowellenofen durch einen Steuerschalter (Sc) gekennzeichnet ist, der zwischen einer stromabwärtigen Stelle des ersten Sicherheitsschalters (S1) und einem Nullspannungspotential angeordnet ist,
    wobei der Steuerschalter (Sc) so angeordnet und strukturiert ist, dass er in einer zweiten Position der Tür (2) schliesst, während die Tür (2) geöffnet wird,
    wobei nach dem Öffnen der Tür (2) die erste Position vor der zweiten Position eintritt.
  2. Der Mikrowellenherd nach Anspruch 1, wobei der Mikrowellengenerator (8) Folgendes umfasst
    ein Magnetron (20) und
    eine Magnetronstromversorgung (T1 - T6, 22, 24) mit mindestens einem Transformator (22) und einem Wechselstromgenerator (T1 - T6), der mit einer Primärwicklung des Transformators (22) verbunden ist, wobei der mindestens eine Halbleiterschalter (T1 - T6) Teil des Wechselstromgenerators ist.
  3. Der Mikrowellenherd nach Anspruch 2, wobei der Wechselstromgenerator eine Brücke oder Halbbrücke umfasst und wobei der mindestens eine Halbleiterschalter (T1 - T6) in der Brücke oder Halbbrücke angeordnet ist.
  4. Der Mikrowellenherd nach Anspruch 1, wobei der Mikrowellengenerator (8) einen Mikrowellenfrequenzgenerator (8') auf Halbleiterbasis umfasst, wobei der mindestens eine Halbleiterschalter (T1 - T6) Teil des Mikrowellenfrequenzgenerators (8') auf Halbleiterbasis ist.
  5. Der Mikrowellenherd nach einem der vorangehenden Ansprüche, der einen dritten Sicherheitsschalter (S3) aufweist, der in Reihe mit dem ersten und zweiten Sicherheitsschalter (S1, S2) angeordnet ist.
  6. Der Mikrowellenherd nach einem der vorangehenden Ansprüche, wobei die Steuereinheit (10) mindestens einen Eingang (IN1 - IN4) aufweist, der mit einer Stelle (L1 - L4) stromabwärts des ersten oder zweiten Sicherheitsschalters (S1, S2) verbunden ist.
  7. Der Mikrowellenherd nach Anspruch 6, wobei der mindestens eine Eingang (IN1 - IN4) ein Analog-Digital-Wandlereingang ist.
  8. Der Mikrowellenherd nach einem der vorangehenden Ansprüche, der weiter eine Sicherung (30) umfasst, die zwischen der Treiberstromversorgung (18) und dem ersten Schalter angeordnet ist.
  9. Der Mikrowellenherd nach einem der vorangehenden Ansprüche, der weiter einen thermischen Überlastschalter (St) aufweist, der durch eine Übertemperatur im Mikrowellengenerator (8) geöffnet werden kann und in Reihe mit dem mindestens einen Sicherheitsschalter (S1 - S3) angeordnet ist.
  10. Der Mikrowellenherd nach einem der vorangehenden Ansprüche, bei dem die Treiberschaltung (14) eine Gate-Basisspannung für den mindestens einen Halbleiterschalter (T1 - T6) erzeugt.
EP17734975.0A 2017-06-26 2017-06-26 Mikrowellenbackofen mit extra-niederspannungs-sicherheitsmechanismus Active EP3646671B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2017/000065 WO2019000108A1 (en) 2017-06-26 2017-06-26 MICROWAVE OVEN HAVING EXTRA LOW VOLTAGE SAFETY MECHANISM

Publications (2)

Publication Number Publication Date
EP3646671A1 EP3646671A1 (de) 2020-05-06
EP3646671B1 true EP3646671B1 (de) 2023-04-05

Family

ID=59276468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17734975.0A Active EP3646671B1 (de) 2017-06-26 2017-06-26 Mikrowellenbackofen mit extra-niederspannungs-sicherheitsmechanismus

Country Status (2)

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EP (1) EP3646671B1 (de)
WO (1) WO2019000108A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113365379A (zh) * 2021-06-29 2021-09-07 广东美的厨房电器制造有限公司 集成芯片和烹饪设备
WO2023020675A1 (en) 2021-08-16 2023-02-23 V-Zug Ag Microwave oven with optical interlock

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049079A1 (en) * 1999-12-09 2001-07-05 Samsung Electronics Co., Ltd. Driving circuit of dc microwave oven and method of controlling the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557333A (en) 1969-01-21 1971-01-19 Westinghouse Electric Corp Solid state microwave oven
CA1202090A (en) 1982-09-20 1986-03-18 Hisashi Okatsuka Microwave heating apparatus with solid state microwave oscillating device
JPS63195991A (ja) * 1987-02-10 1988-08-15 松下電器産業株式会社 高周波加熱装置
KR100399138B1 (ko) * 2000-08-19 2003-09-26 삼성전자주식회사 전자렌지
US20150136760A1 (en) 2013-11-15 2015-05-21 Stmicroelectronics (Canada), Inc. Microwave oven using solid state amplifiers and antenna array
EP2854480B1 (de) 2014-04-24 2016-06-22 V-Zug AG Mikrowellenofen mit schwankungsgesteuerter Heizleistung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049079A1 (en) * 1999-12-09 2001-07-05 Samsung Electronics Co., Ltd. Driving circuit of dc microwave oven and method of controlling the same

Also Published As

Publication number Publication date
EP3646671A1 (de) 2020-05-06
WO2019000108A1 (en) 2019-01-03

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