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    • 6. 发明公开
    • High frequency heating apparatus utilizing inverter power supply
    • Hochfrequenz-Heizapparat mit einem Wechselrichter als Stromversorgungseinheit。
    • EP0477633A1
    • 1992-04-01
    • EP91115153.8
    • 1991-09-07
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Bessyo, DaisukeMaehara, NaoyoshiNakabayashi, YujiMatsumoto, Takahiro
    • H05B6/68F24C7/02F24C7/08
    • H05B6/6426H01H9/226H05B6/642H05B6/666
    • A high frequency heating apparatus which comprises a unitary structure comprising a magnetron (12) for generating a microwave, an inverter power supply (11) for supplying a high voltage electric power to the magnetron (12), and a cooling unit (26) for cooling the magnetron (12) and the inverter power supply (11), all of which are accommodated within a common metallic casing (27). The unitary structure is provided at least one of a detector (25) for detecting an operating condition of the cooling unit (26) and a safety device including a detector (42) for detecting a mounting of the metallic casing (27) to a cabinet. For avoiding an electric shock, the unitary structure is divided into high and low voltage portions and the magnetron (12) and the inverter power supply (11) are electrically connected directly with each other without relying on the unitary structure thereby to accomplish a structure effective to minimize noises and to improve the reliability and the safety factor.
    • 一种高频加热装置,包括一个包括用于产生微波的磁控管(12)的整体结构,用于向磁控管(12)提供高压电力的逆变器电源(11),以及用于 冷却磁控管(12)和逆变器电源(11),所有这些都被容纳在公共金属壳体(27)内。 整体结构设置有用于检测冷却单元(26)的操作状态的检测器(25)和包括用于检测金属壳体(27)安装到柜体的检测器(42)的安全装置中的至少一个 。 为了避免电击,整体结构分为高压部分和低压部分,磁控管(12)和逆变器电源(11)直接彼此电连接,而不依赖于单一结构,从而实现有效的结构 以减少噪音,提高可靠性和安全系数。
    • 7. 发明公开
    • High Voltage power source device
    • Vorrichtungfüreine Leistungs-Hochspannungsquelle。
    • EP0389976A2
    • 1990-10-03
    • EP90105517.8
    • 1990-03-23
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Sakamoto, KazuhoNiwa, TakashiSuenaga, HaruoMatsumoto, Takahiro
    • H05K1/00H05K1/02H05K1/16
    • H05K1/0256H05K1/0219H05K1/0262H05K2201/0969H05K2201/09781H05K2201/09972
    • A high voltage power source device which comprises an electric power source; a low voltage circuit constituted by an inverter circuit including a semiconductor switching element and a capacitor for converting an electric power from the electric power source into a high frequency electric power; a magnetron; a high voltage transformer for converting the high frequency electric power into a high voltage and supplying the high voltage to the magnetron; and a printed circuit board having an electric wiring system formed thereon for connection with and support thereon of the inverter circuit and a high voltage circuit for the voltage boosted by the high voltage transformer. The printed circuit board has separate areas defined therein, and the low and high voltage circuits are formed respectively on the separate areas of the printed circuit board. The printed circuit board includes a patterned grounding conductor formed at the boundary between the sepa­rate areas and also has either a plurality of openings defined therein so as to extend completely through a thickness of the printed circuit in alignment with the patterned grounding conductor, or a plurality of generally elongated electrocon­ductive pieces each having opposite ends connected with the patterned grounding conductor.
    • 一种高压电源装置,包括电源; 由包括半导体开关元件的反相器电路和用于将来自电源的电力转换为高频电力的电容器构成的低压电路; 磁控管 用于将高频电力转换成高电压并将高电压提供给磁控管的高压变压器; 以及其上形成有用于与逆变器电路连接并支撑在其上的电气布线系统的印刷电路板,以及用于由高压变压器升压的电压的高压电路。 印刷电路板具有限定在其中的单独区域,并且低压和高压电路分别形成在印刷电路板的分开的区域上。 印刷电路板包括形成在分离区域之间的边界处的图案化接地导体,并且还具有限定在其中的多个开口,以便完全延伸穿过印刷电路的厚度与图案化的接地导体对准,或多个 大致细长的导电片,其各自具有与图案化的接地导体连接的相对端。