A food heating apparatus includes a housing, a conveyor assembly, a first heating element, a second heating element, a control unit, and a power source. The housing comprises a base portion and a top portion. The base portion forms a first interior space in which the conveyor assembly is located. The top portion forms a second interior space in which the second heating element is located. The top portion further forms a tunnel. The tunnel comprises an entrance and an exit. The conveyor assembly comprises a belt, a motor, a driving pulley, and a driven pulley. The belt comprises an upper food-carrying run and a lower return run. The control unit comprises a control circuit that is configured to control a speed of the motor.

A heating module for a furnace with a process zone. The module includes one or more Silicon Carbide heating elements in a refractory plug. The heating lengths of the elements extend, exposed, from the plug and do not engage one another, but may be positioned to cross over each other. The plug is releasably positioned in the furnace with the heating lengths exposed to the process zone. The plug can be positioned in an array of heating modules, which can be releasably positioned in the furnace with the heating lengths exposed to the process zone.

A heating module for a furnace with a process zone. The module includes one or more Silicon Carbide heating elements in a refractory plug. The heating lengths of the elements extend, exposed, from the plug and do not engage one another, but may be positioned to cross over each other. The plug is releasably positioned in the furnace with the heating lengths exposed to the process zone. The plug can be positioned in an array of heating modules, which can be releasably positioned in the furnace with the heating lengths exposed to the process zone.

The invention relates to a dental furnace, in particular a high-temperature dental furnace for oxide ceramics such as zirconium dioxide having sintering temperatures of between 1300 and 1850 C., comprising a heating element (10) which is intended to give off heating energy to the firing chamber. It is provided that the heating element (10) comprises at least two heating element sections (48, 50) adjoining one another at a transition area (34) which is not current-carrying and/or which extends away laterally, that the transition area (34) is supported on a position, in particular on the free end, spaced apart from the electrical connections (16, 18) on the dental furnace and carries at least the two adjoining parts of heating element sections (48, 50).

The invention relates to a dental furnace, in particular a high-temperature dental furnace for oxide ceramics such as zirconium dioxide having sintering temperatures of between 1300 and 1850 C., comprising a heating element (10) which is intended to give off heating energy to the firing chamber. It is provided that the heating element (10) comprises at least two heating element sections (48, 50) adjoining one another at a transition area (34) which is not current-carrying and/or which extends away laterally, that the transition area (34) is supported on a position, in particular on the free end, spaced apart from the electrical connections (16, 18) on the dental furnace and carries at least the two adjoining parts of heating element sections (48, 50).

The present invention relates to an ingot growing device for growing a single crystal silicon ingot. According to one embodiment of the present invention, the ingot growing device comprises: a growing chamber having an inner space; a growing container located in the inner space and having a silicon solution accommodated therein; a heating unit encompassing the growing container and located thereat, and generating heat; and a susceptor for supporting the growing container, wherein the heating unit comprises: a first ring heater having a ring shape; a second ring heater having a ring shape and located at the lower part of the first ring heater; a first coupling part for coupling the first ring heater and the second ring heater; and a first ring support unit located between the first ring heater and the second ring heater and supporting the first ring heater.

An electric heating device includes: a radiant tube made of metal; a plurality of heater wires disposed in the radiant tube so as to be parallel to each other; a heater fixing shaft disposed on a center axis line of the radiant tube, the heater fixing shaft having a surface covered by an insulator; and disk-shaped ceramic insulators mounted to the heater fixing shaft at predetermined intervals so as to support the heater wires. A center hole in which the heater fixing shaft is inserted penetrates through each ceramic insulator at a center thereof, and heater wire holding holes that are equally spaced on a circumference concentric with the center hole penetrate through each ceramic insulator.

An electric heating device includes: a radiant tube made of metal; a plurality of heater wires disposed in the radiant tube so as to be parallel to each other; a heater fixing shaft disposed on a center axis line of the radiant tube, the heater fixing shaft having a surface covered by an insulator; and disk-shaped ceramic insulators mounted to the heater fixing shaft at predetermined intervals so as to support the heater wires. A center hole in which the heater fixing shaft is inserted penetrates through each ceramic insulator at a center thereof, and heater wire holding holes that are equally spaced on a circumference concentric with the center hole penetrate through each ceramic insulator.

The present invention relates to an ingot growing device for growing a single crystal silicon ingot. According to one embodiment of the present invention, the ingot growing device comprises: a growing chamber having an inner space; a growing container located in the inner space and having a silicon solution accommodated therein; a heating unit encompassing the growing container and located thereat, and generating heat; and a susceptor for supporting the growing container, wherein the heating unit comprises: a first ring heater having a ring shape; a second ring heater having a ring shape and located at the lower part of the first ring heater; a first coupling part for coupling the first ring heater and the second ring heater; and a first ring support unit located between the first ring heater and the second ring heater and supporting the first ring heater.

A sample encapsulation system (10) includes a fixture, a base (12), a chamber (14) having an inlet and a chamber housing (16). The housing (16) has inner (36) and outer (38) housings. The chamber (14) is fixedly mounted in the inner housing (36). The base, chamber (14) and housing (16) are affixed relative to one another and movable relative to the fixture. The system includes a cap (78) and a first ram (80) operably mounted to the cap (78) for engaging the chamber inlet. A second ram (24) is positioned in the chamber (14) opposite the inlet and moves toward and away from the first ram (80). The second ram (24) is driven by a cylinder. A heating assembly is positioned in the inner housing (36) and a cooling assembly which includes a cooling jacket (50) defined in part by the inner housing (36) and the outer housing (38) includes a manifold (60). The chamber (14), chamber housing (16) and base (12) are movable toward the cap (78) for engaging the first ram (80) with the chamber inlet during an encapsulation cycle and away from the cap (78), disengaging the first ram (80) from the chamber inlet following an encapsulation cycle. The cooling system includes a vacuum breaker (62) to self-drain following cooling.