Microwave oven comprising a defrosting detector
    11.
    发明授权
    Microwave oven comprising a defrosting detector 失效
    微波炉包括除霜检测器

    公开(公告)号:US4870234A

    公开(公告)日:1989-09-26

    申请号:US258355

    申请日:1988-10-17

    IPC分类号: F24C7/02 H05B6/68

    CPC分类号: H05B6/666

    摘要: A microwave oven which includes a defrosting detector in the oven cavity in the proximity of a frozen product to be defrosted, the detector including a material which absorbs microwave energy, the absorption of microwave energy by the detector and by the product causing their temperatures to rise. Variations in the detector temperature are measured by a measuring element producing an electrical signal corresponding thereto, such signal being used to control the defrosting process. The microwave absorbent material is in the form of a layer deposited on a carrier which is positioned behind the product so that most of the detector area can only receive microwave energy through the product, whereby the rate of change of detector temperature with time decreases as the product defrosts and becomes constant when defrosting has been completed. The carrier may be one of the walls of the oven cavity or the oven tray. The material may be a resistive ink deposited on the oven tray by screen-process printing.

    摘要翻译: 一种微波炉,其包括在待冷冻产品附近的炉腔中的除霜检测器,所述除霜检测器包括吸收微波能量的材料,由检测器吸收微波能量,并引起产品使其温度升高 。 检测器温度的变化通过产生与之对应的电信号的测量元件来测量,这种信号用于控制除霜过程。 微波吸收材料是沉积在载体上的层的形式,其位于产品后面,使得大多数检测器区域仅能够通过产品接收微波能量,由此随着时间的推移,检测器温度的变化率随着 产品除霜并在除霜完成后变得恒定。 载体可以是烤箱腔或烤箱托盘的壁之一。 该材料可以是通过丝网印刷沉积在烤箱托盘上的电阻墨水。

    Microwave oven with a door-closing safety device
    12.
    发明授权
    Microwave oven with a door-closing safety device 失效
    微波炉带门关闭安全装置

    公开(公告)号:US4760229A

    公开(公告)日:1988-07-26

    申请号:US53164

    申请日:1987-05-21

    CPC分类号: H05B6/6417

    摘要: A microwave oven with a door-closing safety device is provided wherein a movable door comprises a device wherein the beam of at least one light emitter is guided by means of light guides towards a light beam detector. The light guides are arranged along a substantial portion of at least one side of the oven door frame. The beam of light in its non-guided path between the emitter and the detector passes through diaphragms, integral with the oven door, each diaphragm having an aperture such that the light beam passes through it when the door is properly closed but wherein the light beam is intercepted by the edge of the diaphragm when the door is not properly closed. The detector activates a signal that actuates the magnetron when the light beam is received; however, when the beam is intercepted, activation of the magnetron is prevented thereby preventing leakage of microwave energy.

    摘要翻译: 提供了一种具有关门安全装置的微波炉,其中可移动门包括其中至少一个光发射器的光束通过光导向光束检测器引导的装置。 导光体沿炉门框架的至少一侧的大部分布置。 在发射器和检测器之间的非引导路径中的光束通过与炉门一体的隔膜,每个隔膜具有孔,使得当门被适当地关闭时光束通过它,但是其中光束 当门未正确关闭时,被隔膜的边缘截取。 当接收到光束时,检测器激活致动磁控管的信号; 然而,当光束被截断时,防止磁控管的激活,从而防止微波能量的泄漏。

    Intruder detector with anti-obscuring means
    13.
    发明授权
    Intruder detector with anti-obscuring means 失效
    具有防伪装置的入侵检测器

    公开(公告)号:US4752768A

    公开(公告)日:1988-06-21

    申请号:US800889

    申请日:1985-11-22

    摘要: An apparatus for detecting intruders comprising a housing provided with at least one window, a passive infrared detector (for detecting the radiation emitted by an intruder around a wavelength .lambda..sub.1), and an anti-obscuring device (detecting by infrared radiation having a wavelength .lambda..sub.2 the presence of an obscuring of the appparatus for detecting intruders). The apparatus further includes an electronic circuit intended to operate an alarm when the presence of an intruder or an obscuring element has been detected. The apparatus for detecting intruders has a detector for detecting an obscuring element arranged at small and at large distances. It further includes a self-verification circuit. An obscuring element is detected, inter alia, by a mirror arranged at the end of the zone to be supervised, which returns radiation .lambda..sub.2 emitted by an emitter to a detector, both being situated very close to the detector of radiation having a wavelength .lambda..sub.1.

    摘要翻译: 一种用于检测入侵者的装置,包括设置有至少一个窗口的壳体,被动红外检测器(用于检测由入射者围绕波长λ1发射的辐射)和防遮蔽装置(通过具有波长λ的红外辐射 2存在用于检测入侵者的装置的模糊)。 该装置还包括一个电子电路,用于当已经检测到入侵者或模糊元件的存在时操作警报。 用于检测入侵者的装置具有用于检测以较小和较大距离布置的遮蔽元件的检测器。 它还包括一个自我验证电路。 特别地,通过布置在要监督的区域的端部处的反射镜检测到模糊元件,其将由发射器发射的辐射λ2返回到检测器,两者都非常接近具有波长λ的辐射检测器 1。

    Microwave oven having control means which reduce the risk of no-load
operation
    14.
    发明授权
    Microwave oven having control means which reduce the risk of no-load operation 失效
    微波炉具有降低空载操作风险的控制装置

    公开(公告)号:US4713514A

    公开(公告)日:1987-12-15

    申请号:US919909

    申请日:1986-10-16

    IPC分类号: H05B6/68 H05B6/76

    CPC分类号: H05B6/6417

    摘要: The invention relates to a microwave oven comprising control means which reduce the risk of no-load operation and which co-operate with an actuating element which switches on the magnetron with the aid of power-supply means depending on open and closed states of the oven door. The invention is characterized in that the control means comprise a bistable electromechanical device which responds to closures of the door by counting the number of these closures and which enables the magnetron to be energized after an even number of closures of the door, one cycle of operation of the bistable electromechanical device comprising two open states and two closed states of the door. The bistable device may comprise a lever device which actuates a pendant-type electrical switch or a remote-controlled switch.

    摘要翻译: 本发明涉及一种微波炉,其包括控制装置,该控制装置减少了空载操作的风险,并且其与根据电源装置启动磁控管的致动元件相配合,这取决于烤箱的打开和关闭状态 门。 本发明的特征在于,控制装置包括双稳态机电装置,其通过计数这些闭合件的数量来响应门的闭合,并且使得能够在门的闭合数量之后使磁控管被通电,一个循环的操作 双稳态机电装置包括门的两个打开状态和两个闭合状态。 双稳态装置可以包括杠杆装置,该杠杆装置致动悬挂式电开关或遥控开关。

    Method of and device for determining when a liquid-renewal process is to
be terminated
    15.
    发明授权
    Method of and device for determining when a liquid-renewal process is to be terminated 失效
    用于确定何时终止液体更新过程的方法和装置

    公开(公告)号:US4639137A

    公开(公告)日:1987-01-27

    申请号:US691597

    申请日:1985-01-15

    CPC分类号: D06F39/004 G01N21/53

    摘要: A method of renewing a used liquid for reuse of the same includes establishing a body of a reference liquid for comparison with renewed used liquid, and establishing a separate body of the used liquid adjacent the body of reference liquid. An incident light beam is produced for consecutive traversal of the body of used liquid and the body of reference liquid, the particles in the two liquid bodies thereby diffusing the light beam to provide respective luminous fluxes off the axis of the incident light beam. The two luminous light fluxes are separately detected and compared. This procedure is automatically terminated when the detected luminous light fluxes are substantially equal to each other.

    摘要翻译: 更新使用过的液体以重新使用的方法包括建立用于与更新的使用液体进行比较的参考液体,以及在参考液体的主体附近建立分离的废液体。 产生入射光束,用于连续遍历使用液体和参比液体,两个液体中的颗粒由此扩散光束,从而提供离开入射光束轴线的各个光束。 分别检测和比较两种发光光束。 当检测到的发光光束基本相等时,该过程自动终止。

    Door-open alarm device for a refrigerating appliance
    16.
    发明授权
    Door-open alarm device for a refrigerating appliance 失效
    用于制冷设备的开门报警装置

    公开(公告)号:US4528558A

    公开(公告)日:1985-07-09

    申请号:US393897

    申请日:1982-06-30

    摘要: A door-open alarm device comprises alarm means connected to an electric circuit which comprises, arranged on the stationary part (11), a voltage source, a switch (13) having two positions in which the circuit is interrupted and closed respectively, electrical time delay means responsive to a current flow in the circuit to produce a voltage variation across said alarm means after a time delay, thereby triggering said alarm means. Arranged on the door (12) is a mechanical actuating element (14) for said switch, which opens said switch when the door is wide open or closed, and which closes said switch when the door is ajar.

    摘要翻译: 门开式报警装置包括连接到电路的报警装置,包括布置在固定部分(11)上的电压源,具有两个位置的开关(13),其中电路被中断和闭合,电时间 延迟装置响应于电路中的电流流动,在时间延迟之后在所述报警装置上产生电压变化,从而触发所述报警装置。 在门(12)上布置有用于所述开关的机械致动元件(14),当门被打开或关闭时打开所述开关,并且当门处于闭合状态时关闭所述开关。