摘要:
An inductive hot point heating system is regulated or controlled by an oscillation packet control, which uses a symmetrical pattern of complete mains half-waves. The switching takes place in the zero passage and is symmetrical in such a way that there is no d.c. voltage component in the mains. It also contains an optical temperature monitoring of the plate covering the cooking point with an infrared photosensor, which determines the temperature on the basis of its predetermined spectral range.
摘要:
An adjusting shaft for an electric regulating or control device, which operates equipment functions by means of a control cam, is profiled to engage the control cam and can be installed subsequent to the complete assembly of the control device and fixed relative to the control device by a spring detent and associated stop. The stop can also serve to prevent unintentional rotation of the control cam until displacement of the stop against the opposition of a biasing spring. The subsequently installed shaft can allow use of universal control devices with random shaft lengths and types.
摘要:
To a lower coverplate of an electric hotplate a side plate is fitted, onto which can subsequently be mounted an insulator by means of a locking connection. The insulator receives connecting leads from the hotplate and corresponding connections, such as flat connecting tongues. As a result of the subsequent mountability of the insulator, the transportation height is reduced, and by a desired bending point, the entire connecting unit can easily be adapted to different installation shapes and heights.
摘要:
A temperature switch, used more particular as a temperature limiter for a radiation heating element (11) for heating a glass-ceramic plate (12), has radiation heaters (13, 14). Its rod-shaped temperature sensor (20) has an expansion rod (24) which is disposed in a tube (25) acting as a comparison norm and can be made of a chromium-iron-aluminum alloy and is heat-treated above 1100.degree. C. The tube (25) can be made of a radiation-absorbing material or is coated with such a material, for example, cordierite, non-transmissive glass-ceramics or quartz material. The result of both steps is that the temperature switch has an enhanced switching amplitude and therefore a reduced switching frequency.
摘要:
A radiant heater with a light radiator constructed in the manner of a halogen radiator and a conventional dark radiator radiant heater is arranged in such a way that the dark radiator is arranged in a ring zone surrounding the circular light radiator. The central zone below the light radiator remains unheated. The dark radiator is positioned on an inner shoulder of the rim made from stronger insulating material and which consequently forms a ring with a L-shaped cross-section, which rests on a insulating layer.
摘要:
A radiant element (11) contains a light radiator, e.g. a substantially circular halogen tubular lamp (15) and a dark radiator (18) in the form of standard open, electric radiant heating coils. For damping or attenuating the high starting or transient current of the light radiator (15), a damping resistor (21) is connected in series therewith, namely during the warming-up phase of the light radiator (15). Following the rise of the resistance of the light radiator due to its heating or after a certain time lapse, a damping switching device (22) disables the series resistor by shorting across it.
摘要:
The lower cover plate of an electric hotplate is fixed to the hotplate body by a resilient fixing structure provided on the cover plate, engaging with gripping edges on the outer face of a downwardly directed, central cast pin. The fixing structure can be defined by radial or flap-like, inwardly-directed portions of the cover plate and additionally can have portions engaging on the lower face of the pin and which are firmly held by the final screwing down of the electric hotplate.
摘要:
A mounting device for an electric cooker plate in which the relatively heavy cooker plate (11) is so mounted in a stove top plate (19) of glass, that even during transportation, destruction of the glass stove top plate under lateral impacts will not, or is unlikely to, occur. The device includes U-shaped centering U-profiles (46) which are mounted on the inner face of an insert ring (31), which rests in a rubber profile (26) surrounding the mounting opening (50), the insert ring and rubber profile absorbing the affects of the impacts.
摘要:
In a radiant heater (1) a support tray (3) receiving the radiant heating elements (10, 11) and hotplate (4) are displaceable with respect to one another by sliding guides (27) immediately adjacent to hotplate (4) and are self-adjustably tensioned with respect to one another by tension springs that an insulating material bearing rim (9) of support tray (3) always reliably engages on the inside of hotplate (4). The thus formed, self-adjusting unit can be supported as an entity on base (6) by means of actuating spindles (31), so that its level can be adjusted at any time without impairing the engagement of support tray (3) on hotplate (4).