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    • 2. 发明公开
    • Cooking oven having function to automatically clean soils attached to inner walls thereof
    • 烹饪炉具有用于自动移除已沉积在内壁上的污染物的装置。
    • EP0380733A1
    • 1990-08-08
    • EP89101938.2
    • 1989-02-03
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Nagai, TakeshiFukuda, HiroshiItoh, MasahikoShitaya, Takao
    • F24C7/00F24C15/20
    • F24C14/02
    • A self-cleaning type cooking oven with a cooking chamber (1) which has a function to pyrolytically eliminate food soils (15) accumulated on walls (2, 3) of the cooking chamber (1). The cooking oven includes a heater (4, 5) for supplying heat into the cooking chamber (1) so as to allow to pyrolytically degrade the food soils (5) and an exhausting passage (6) coupled to the cooking chamber (1) to exhaust gases (16) generated due to the pyrolytical degradation to an ambient atmosphere. In the exhausting passage (6) is provided an oxidizing catalyst (7) which oxidizes the gases (16) introduced thereinto for exhausting and also provided a gas sensor (8) to detect a gas component therearound. Also included in the cooking oven is a heat control unit (9) electrically connected to the heater for controlling heat supply into the cooking chamber, the heat control unit (9) being responsive to a gas signal therefrom to determine a heating time preiod for chamber cleaning. With the temperature of the cooking chamber being kept at a predetermined cleaning temperature, the heat control unit samples the gas signal at a given time interval to detect a variation of amount of the gas component and detect an inflection point from decresing to increasing or vice versa in the gas-component variation to determine the heating time period in conjunction with the inflection point, the food soils being substantially degraded by heating during the heating time period.
    • 的自清洁型烹饪烤箱具有烘烤腔室(1),其具有上累积的壁的功能,热解消除食品污物(15)(2,3)烹调室(1)。 烹饪炉包括加热器(4,5),用于供应热到烹饪室(1),以便允许热解降解食物污垢(5)和在排气通路(6),其耦合到所述烹饪室(1)至 在环境大气下,由于所产生的降解pyrolytical到废气(16)。 在排气通路(6)在氧化催化剂(7),氧化引入其中用于排出并且因此提供了一种气体传感器的气体(16)(8),以检测那里周围的气体成分提供。 所以包括在烹调炉是一个热控制单元(9)电连接到所述加热器,用于控制供热到烹饪室中,所述热控制单元(9)被从确定性矿为腔室中的加热时间preiod响应于气体信号那里 清洗。 与烹饪室的温度保持在预定的清洗温度,热控制单元的样品在给定时间间隔中的气体信号,以检测气体组分的量的变化,并在拐点从渐渐收窄到增加或反之亦然检测 在气体成分的变化,以确定矿与拐点连词加热时间期间,食物污垢基本上由加热的加热期间TIMEPERIOD降解。
    • 6. 发明公开
    • High frequency heating apparatus using inverter-type power supply
    • Hochfrequenzheizapparat mit Netzanschlussvorrichtung,die einen Wechselrichter aufweist。
    • EP0279514A1
    • 1988-08-24
    • EP88300400.4
    • 1988-01-19
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Maehara, NaoyoshiMatsumoto, TakahiroSakamoto, KazuhoNiwa, TakashiShitaya, TakaoBessyo, DaisukeKusunoki, Shigeru
    • H05B6/68F24C7/08F24C7/02H05B6/64
    • H05B6/666H05B6/685
    • A high-frequency heating apparatus comprises an inverter (33) including a semiconductor switch (32) and a resonance capacitor (56), a boosting transformer (35) for supplying a high-voltage power and a heater power to a magnetron (39), an inductance device (41) inserted in the heater circuit of the magnetron (39), and an inverter control unit (34) for controlling the semiconductor switch (32). The inverter control unit (34) is controlled by start control means (42) at the start time of the inverter (33) so that the conduction time of the semiconductor switch (32) becomes shorter than that under a normal operating condition and the non-conduction time thereof becomes longer than that under a normal operating condi­tion and so that the switching period of the semiconductor switch (32) becomes substantially an integral multiple of a resonance period of the resonance circuit (35, 56) formed by the resonance capacitor (56), whereby the operating frequency of the inverter (33) at the time of starting thereof becomes substantially equal to its normal operating frequency.
    • 高频加热装置包括:包括半导体开关(32)和谐振电容器(56)的反相器(33),用于向磁控管(39)提供高压电力和加热器功率的升压变压器(35) 插入在磁控管(39)的加热器电路中的电感装置(41)和用于控制半导体开关(32)的逆变器控制单元(34)。 逆变器控制单元(34)在逆变器(33)的启动时由启动控制装置(42)控制,使得半导体开关(32)的导通时间比正常工作条件下的导通时间短, 其导通时间长于正常工作状态,并且使得半导体开关(32)的开关周期基本上变成由谐振电容器形成的谐振电路(35,56)的谐振周期的整数倍 56),由此逆变器(33)启动时的工作频率变得基本上等于其正常工作频率。