Abstract:
Ein Leistungssteuergerät zum Steuern einer Leistung einer elektrischen Heizeinrichtung ist als Baueinheit ausgebildet und weist einen Leistungsschalter und eine Auslösevorrichtung dafür auf. Die Auslösevorrichtung weist einen Bimetall-Auslöser und eine Heizvorrichtung dafür auf. Die Heizvorrichtung weist einen flächigen Träger mit einer elektrisch isolierenden Oberseite auf, auf der ein Heizleiter angeordnet ist. Für ein schnelleres Schaltverhalten kann der Träger aus Keramik bestehen und eine Dicke von weniger als 1,5 mm aufweisen und/oder das Leistungssteuergerät kann ein längliches Kompensationsbimetall aufweisen, das ein frei bewegbares Kompensations-Ende aufweist. Dieses ist gegen die Auslösevorrichtung angedrückt und kann Änderungen der Umgebungstemperatur ausgleichen, die auch den Bimetall-Auslöser betreffen.
Abstract:
A method of fabricating thermal bimorph actuators using high permittivity ferroelectric thin films is disclosed. The device is a thermal can¬ tilever actuator employing barium titanate (BaTiO 3 ) for RF applications. Com¬ pared to electrostatic actuators, this MEMS structure is designed to handle high RF transmitted power while maintaining a high capacitance ratio due to the high permittivity of the ferroelectric thin film employed and without the stiction problems normally associated with other MEMS actuators.
Abstract:
An overheat protection control unit for a liquid heating vessel includes a control body (1). A single-integrated dual-actuation heat sensitive bimetal actuator (2) is provided on the upper face of the control body (1). The bimetal actuator (2) is two integrated bimetal strips which are formed on a piece of bimetal strip and they have relatively independent actuating units. An outer kick limb (3) of each actuating unit should actuate downward when the overheat state occurs. Two groups of switch contacts (6) are also provided on the control body (1). Each group of switch contact (6) cooperates with the outer kick limb (3) of a corresponding actuating unit. The outer kick limb (3) should open a group of corresponding switch contact (6) when actuating downward and cuts off the power supply of the liquid heating vessel.
Abstract:
A thermal switch includes a low abrasive and wear resistant disc seat for holding a bimetallic disc. The disc seat includes a disc body with a flange extending from a periphery of the disc body. A centralized through opening may be located in the disc body to prevent warping of the disc body during its manufacture. In addition, the disc seat may be made from brass where at least a first surface of the disc body is plated with Teflon Electroless Nickel, which may take the form of sub-micron particles of polytetrafluoroethylene with auto-catalytically applied nickel.
Abstract:
A creepless snap acting bimetallic switch having flexible contact members. The bimetallic switch comprises: a bimetallic element being adapted to snap between a first mode and a second mode, the first mode corresponding to a closed position of the switch, and the second mode corresponding to an open position of the switch; a first flexible contact member disposed adjacent the bimetallic element and having a first contact portion thereon; a first terminal electrically conductively coupled to the first flexible contact member; a second flexible contact member disposed adjacent the first flexible contact member and having a second contact portion thereon, the first contact portion and the second contact portion being disposed relative to one another such that, when the switch is in a closed position, the first contact portion and the second contact portion are biased against one another by the bimetallic element to be in engagement with one another, and when the switch is in an open position, the first contact portion and the second contact portion define an open contact gap therebetween; a second terminal electrically conductively coupled to the second contact portion such that when the switch is closed, electrical continuity exists between the first terminal and the second terminal; wherein, when the bimetallic element exhibits creep by deforming prior to a snapping thereof from its first mode into its second mode, the first flexible contact member and the second flexible contact member flex in a deformation direction of the bimetallic element such that the first contact portion and the second contact portion remain engaged until the snapping of the bimetallic element from its first mode into its second mode. Advantageously, the bimetallic element may be configured as a bimetallic disc. An alternate embodiment of the switch latches into an open configuration.
Abstract:
The invention relates to creep-resistant iron-nickel alloys with a low expansion coefficient that contain (in weight %), in addition to 0.02 to 0.3 % C, a maximum of 1 % Mn, and a maximum of 1 % Si, an Mo content of 0.1 to 2.5 % and/or a Cr content of 0.1 to 2.5 % /K in the temperature range of 20 to 100 DEG C.
Abstract:
The invention relates to a heating assembly for an aerosol-generating device. The heating assembly may comprise a first solder spot and a second solder spot. The heating assembly may further comprise a connection strip electrically connecting the first solder spot with the second solder spot. One of the first solder spot and the second solder spot may be configured as a soft solder spot with a melting temperature between 200 °C and 300 °C. The connection strip may be configured as a bimetal strip. The invention further relates to an aerosol-generating device comprising the heating assembly.