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    Ceramic top range surface temperature cut-off thermostatic device
    1.
    发明授权
    Ceramic top range surface temperature cut-off thermostatic device 失效
    陶瓷顶部范围表面温度切断温度装置

    公开(公告)号：US3624352A

    公开(公告)日：1971-11-30

    申请号：US3624352D

    申请日：1970-09-22

    Applicant: GEN MOTORS CORP

    Inventor： DEATON HOMER W ,  SIEGLA DONALD C

    IPC: H05B3/74 ,  H05B3/68

    CPC classification number: H05B3/748 ,  H05B2213/04 ,  H05B2213/07

    Abstract: An infrared ceramic cooking assembly having a plurality of radiant heating units wherein each unit has an underlying low density refractory fiber thermal insulating heater block supporting an open coil resistance element in spaced relation to a glass-ceramic cover plate located on the heater blocks. Each unit has a surface temperature limiting device in combination therewith including a thermostat supporting bracket having a heat sensing flange in direct pressure contact with the undersurface of the cover plate and supported on the heater block surface such that the temperature of each bracket flange serves as an analog of the cover plate utensil heating area temperature influencing its associated thermostat for preventing energization of the unit when the overlying heating area exceeds a predetermined temperature.

    Infrared radiant open coil heating unit with reflective fibrous-ceramic heater block
    7.
    发明授权
    Infrared radiant open coil heating unit with reflective fibrous-ceramic heater block 失效
    红外线辐射式开放式线圈加热单元，具有反射纤维 - 陶瓷加热块

    公开(公告)号：US3612828A

    公开(公告)日：1971-10-12

    申请号：US3612828D

    申请日：1970-06-22

    Applicant: GEN MOTORS CORP

    Inventor： SIEGLA DONALD C

    IPC: H05B3/74 ,  H05B3/68

    CPC classification number: H05B3/748 ,  H05B3/74

    Abstract: An infrared radiant-type heating unit including a utensil support cover plate of infrared transmissive material, an underlying infrared reflective heater support block having a low thermal mass, and an open coil resistance element directly and continuously supported on the heater block in spaced relation to the cover plate. The heater block is a low density, homogeneous fibrous-ceramic rigid block rendered infrared reflective within a selected wavelength range of approximately 2 to 5 microns by having dispersed throughout the block a defined amount of finely divided pacifiers selected from a group consisting of titanium oxide, zirconium oxide, tin oxide and potassium titanate. The rigid low-density block has tie members extending therein which retain the deeply undulating patterned resistance element within a continuous spiral groove formed in the block permitting controlled accordionlike thermal expansion and contraction of the element.

    Power divider circuit for two-unit hotplate
    8.
    发明授权
    Power divider circuit for two-unit hotplate 失效
    用于两个单元HOTPLATE的分路器电路

    公开(公告)号：US3610886A

    公开(公告)日：1971-10-05

    申请号：US3610886D

    申请日：1970-07-15

    Applicant: GEN MOTORS CORP

    Inventor： PANSING NELSON J ,  SIEGLA DONALD C

    IPC: F24C15/10 ,  H05B1/02

    CPC classification number: F24C15/106

    Abstract: In preferred form, an electric hotplate with dual resistancetype heating elements which produce a maximum power output at a predetermined current level when operated separately. When operated simultaneously, the current is divided between the elements to energize them at less than the maximum power output without exceeding the predetermined current level. The hotplate circuit includes two parallel branches each containing a heating element, a heat control switch and a diode for energizing one element with the positive half wave of alternating current and the other element with the negative half wave of alternating current. A current-responsive bypass circuit which is normally in parallel with the diodes opens when both elements are energized simultaneously.

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