Disclosed is a heating element for a dental furnace including a tube element for accommodating a heating coil inside the tube element. At least one closing element may be connected to at least one open end of the tube element, wherein electrical connectors may be led through the closing element and fused with the element. The tube element may be made from a ceramic material, such as oxide ceramics, that may be connected to the connector via a plurality of intermediate glasses/transition glasses and glass solder to compensate for different heat expansion coefficients such that up to 500° C. gas escaping from the tube element may not enter due to a thermal action, providing that operational safety of the heating element is ensured. Further, disclosed is a dental furnace including such a heating element.

Disclosed is a heating element for a dental furnace including a tube element for accommodating a heating coil inside the tube element. At least one closing element may be connected to at least one open end of the tube element, wherein electrical connectors may be led through the closing element and fused with the element. The tube element may be made from a ceramic material, such as oxide ceramics, that may be connected to the connector via a plurality of intermediate glasses/transition glasses and glass solder to compensate for different heat expansion coefficients such that up to 500° C. gas escaping from the tube element may not enter due to a thermal action, providing that operational safety of the heating element is ensured. Further, disclosed is a dental furnace including such a heating element.

A device, system and method for depositing crystalline layers on at least one crystalline substrate is described. The disclosure includes the use of a multi zone heater, the multi zone heater is disposed between a reactor housing and a process chamber. The multi zone heater has different electrical properties along its length, whereby the multi zone heater when heated by eddy currents induced by an RF field generated by a RF heating coil provides a temperature profile inside the multi zone heater that varies along the length of the multi zone heater for heating the process chamber.

The invention relates to a device for heat treatment of a product, including: an enclosure comprising a casing made of refractory material; a screw mounted to turn in the casing about a geometric axis of rotation in order to move the product between an inlet of the casing and an outlet of the casing, the screw furthermore forming a heating means for heat treatment of the product by supplying electricity to the screw. According to the invention, the device comprises at least one heating element for heating the casing in operation, the heating element being arranged inside at least one of the walls of the casing. The invention also relates to a corresponding method.

The invention relates to a device for heat treatment of a product, including: an enclosure comprising a casing made of refractory material; a screw mounted to turn in the casing about a geometric axis of rotation in order to move the product between an inlet of the casing and an outlet of the casing, the screw furthermore forming a heating means for heat treatment of the product by supplying electricity to the screw. According to the invention, the device comprises at least one heating element for heating the casing in operation, the heating element being arranged inside at least one of the walls of the casing. The invention also relates to a corresponding method.

An apparatus (10) comprising a heating chamber (12). The heating chamber (12) comprises electric heating means (14) for heating the interior (16) of the heating chamber (12) to denature asbestos or asbestos in asbestos comprising structures located in the interior (16) of the heating chamber (12). The apparatus (10) comprises a primary filter (18) downstream of the heating chamber (12). The apparatus (10) comprises an induced draft fan (20) downstream of the primary filter (18), wherein the apparatus (10) is configured such that in use the induced draft fan (20) draws emissions from the heating chamber (12) through the primary filter (18). The apparatus (10) comprises a discharge stack (22) downstream of the primary filter (18). The discharge stack (22) comprises an outlet (24) for venting emissions to external atmosphere.

A furnace for relieving glass products of stress is provided. The furnace has a furnace interior and a thermal element that measures temperatures in the furnace interior. The thermal element is enclosed by an enveloping tube composed of an inorganic material.

The present invention relates to a furnace device for heating a plate, in particular a metal plate, by convection. The furnace device has a housing, in which a temperature control region for temperature-controlling a component part and an adjustment region are formed, wherein the adjustment region has a temperature control device for adjusting a temperature of a temperature control fluid. Further, the furnace device has a positioning device for positioning the plate in the temperature control region in a predetermined orientation, and a ventilator, which is arranged in the housing and which is adapted to circulate the temperature control fluid in the housing between the temperature control region and the adjustment region such that the temperature control fluid is flowable in a flow direction along a surface of the plate.

The present invention relates to a furnace device for heating a plate, in particular a metal plate, by convection. The furnace device has a housing, in which a temperature control region for temperature-controlling a component part and an adjustment region are formed, wherein the adjustment region has a temperature control device for adjusting a temperature of a temperature control fluid. Further, the furnace device has a positioning device for positioning the plate in the temperature control region in a predetermined orientation, and a ventilator, which is arranged in the housing and which is adapted to circulate the temperature control fluid in the housing between the temperature control region and the adjustment region such that the temperature control fluid is flowable in a flow direction along a surface of the plate.

In a heater unit for a carburizing furnace that carburizes a workpiece, a heater that heats a furnace atmosphere; and a heater supporting member that reflects radiant heat of the heater are provided, in which a heat generation part of the heater is attached to the heater supporting member, and a heat generation body composing the heat generation part is formed in a bellows shape.