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    • 10. 发明申请
    • MICROWAVE HOUSEHOLD OR COMMERCIAL APPLIANCE
    • 微波炉家用或商业用具
    • US20160366729A1
    • 2016-12-15
    • US15178790
    • 2016-06-10
    • Electrolux Professional S.p.A.
    • Gilberto PinAlessandro MorassutMattia Pennasilico
    • H05B6/66H05B6/64G05F5/00
    • H05B6/662G05F5/00H05B6/6426H05B6/6482H05B6/664H05B6/666H05B6/683H05B6/80H05B2206/044H05B2206/046
    • The present invention relates to a household or commercial appliance (1) comprising: a heating chamber (7), a couple of magnetrons (8a)(8b) having relative anodes (TA1)(TA2) and cathodes (TC1)(TC2), a power unit (5, 40, 140) comprising at least a high voltage circuit (9) configured to power-on magnetrons (8a)(8b). The high voltage circuit (9) comprises: a high voltage transformer (13) comprising a primary winding (13a) connected to an alternating voltage source (17) and a secondary high-voltage winding (13b) providing an alternating high voltage (V2) having a period (W) comprising two half periods (W1)(W2), a couple of half-wave voltage doubler circuits (15)(16) which are configured to cooperate with the secondary high-voltage winding (13b) in order to provide a doubled high-voltage (DVH), a first and second unidirectional conducting devices (31)(32) which are connected respectively between the half-wave voltage doubler circuits (15)(16) and a reference terminal (30)(33) having a predetermined potential (GND). The first and second unidirectional conducting devices (31)(32) being configured to cause the half-wave voltage doubler circuits (15)(16) to supply, during a period (W) of the alternating high-voltage (V2), the doubled high-voltage (DVH) to the cathode (TC1)(TC2) of the respective magnetron (8a)(8b) alternately. One of the half-wave voltage doubler circuits (15) supplying the doubled high-voltage (DVH) during one half-period (W1) of the alternating high-voltage (V2), and the other half-wave voltage doubler circuit (16) supplying the doubled high-voltage (DVH) during the other half-period (W2).
    • 本发明涉及一种家用或商业用具(1),包括:加热室(7),具有相对阳极(TA1)(TA2)和阴极(TC1)(TC2))的一对磁控管(8a) 包括至少一个配置成加电磁控管(8a)(8b)的高压电路(9)的功率单元(5,40,140)。 高压电路(9)包括:高压变压器(13),包括连接到交流电压源(17)的初级绕组(13a)和提供交替高压(V2)的次级高压绕组(13b) 具有包括两个半周期(W1)(W2)的周期(W),配置成与次级高压绕组(13b)配合的一对半波倍压电路(15)(16),以便 提供双重高电压(DVH),分别连接在半波倍压电路(15)(16)和参考端子(30)(33)之间的第一和第二单向导通装置(31)(32) )具有预定电位(GND)。 第一和第二单向导电装置(31)(32)被配置为使得半波倍压电路(15)(16)在交流高压(V2)的周期(W)期间提供 交替地将相应磁控管(8a)(8b)的高电压(DVH)加倍到阴极(TC1)(TC2)。 在交替高压(V2)的一个半周期(W1)期间提供双倍高压(DVH)的半波倍压器电路(15)中的一个,另一个半波倍压器电路(16) )在另一个半周期(W2)期间提供双倍高电压(DVH)。