(19)
(11) EP 2 009 958 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.03.2011 Bulletin 2011/13

(43) Date of publication A2:
31.12.2008 Bulletin 2009/01

(21) Application number: 08158882.4

(22) Date of filing: 24.06.2008
(51) International Patent Classification (IPC): 
H05B 6/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 25.06.2007 KR 20070062032

(71) Applicant: Daewoo Electronics Corporation
Seoul (KR)

(72) Inventor:
  • Shin, Yong Soo
    Sangam-dong Mapo-gu Seoul (KR)

(74) Representative: Michalski Hüttermann & Partner Patentanwälte 
Neuer Zollhof 2
40221 Düsseldorf
40221 Düsseldorf (DE)

   


(54) Method of preheating microwave oven


(57) Disclosed herein is a method of preheating a microwave oven. The method includes driving a cooling fan motor for a predetermined preheating duration if a preheating operation is performed by setting a preheating temperature and inputting a preheating signal; determining whether an internal temperature of a cooking chamber reaches the preheating temperature while continuously driving all available heaters of the microwave oven; and maintaining the preheating temperature for a preheating temperature maintaining duration by driving the cooling fan motor while selectively driving the available heaters, if the internal temperature reaches the preheating temperature.







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