A furnace system including an outer shell which comprises a top flange, an elongated body portion, and a bottom flange, wherein the outer shell is a pressure vessel, with no penetrations in the elongated body portion; a heater assembly which comprises (i) a single-piece annular shaped insulation layer, and (ii) a plurality of heaters embedded in the insulation layer, wherein the heater assembly is disposed within the elongated body portion of the outer shell; and an innermost layer disposed within the annular-shaped insulation layer, wherein the innermost layer is a baffle tube configured to force a natural convective flow, wherein each of the plurality of heaters is individually controllable and the plurality of heaters are configured to heat different zones within the furnace to different temperatures and/or at different rates. The system may be used to heat treat magnet materials, such as those formed of Bi-2212, therein.

Apparatus for heating metal products, able to heat by electromagnetic induction at least one metal product positioned in a heating chamber and mobile in a direction of feed, in which said heating apparatus comprises one or more heating coils positioned in a ring around said heating chamber and said metal product to be heated; said one or more heating coils are positioned substantially transversely to the direction of feed of the metal product and are able to generate a magnetic field having a direction substantially parallel or coincident to the direction of feed of the product to be heated and directed in the same direction as said direction of feed of the product to be heated; said heating apparatus also comprises at least one heat shield positioned between said one or more heating coils and the metal product to be heated; said heat shield comprises walls provided with blocks of thermal and electric insulating material and positioned around the metal product to be heated and also comprises cooling pipes positioned in said walls and configured to allow the flow of at least one cooling fluid.

A system and method for utilizing corner-cube reflector technology for irradiation control in direct radiant heating systems is described. The system and method has application in many types of direct irradiation heating systems and is applicable to both narrowband or broadband directed irradiation heating systems. The purpose and result of the implementation is to improve the overall system efficiency through the redirection of photons back to a targeted item which is being heated or treated with the irradiation energy.

A dental furnace for firing dental-ceramic compounds comprises a firing chamber for receiving ceramic elements to be fired. Further, a heating device for heating and firing the ceramic element is provided. The heating device comprises at least one heating element for producing IR radiation in the range of 0.8-5 μm.

A double insulating wall structure heating furnace capable of preventing its inner pipe whose strength has decreased due to high-temperature heating from being damaged. A double insulating wall structure heating furnace 1 includes an outer pipe 2 and an inner pipe 3 disposed inside the outer pipe 2, in which a sealed space 8 formed between the outer and inner pipes 2 and 3 is depressurized and a heating space 13 formed inside the inner pipe 3 is heated, and in which a tubular reinforcing member 6 is disposed so as to cover an outer circumference of the inner pipe 3, the tubular reinforcing member being formed of a material having a higher heat resistance and a higher strength than those of the material of the inner pipe 3.

A system and method for utilizing corner-cube reflector technology for irradiation control in direct radiant heating systems is described. The system and method has application in many types of direct irradiation heating systems and is applicable to both narrowband or broadband directed irradiation heating systems. The purpose and result of the implementation is to improve the overall system efficiency through the redirection of photons back to a targeted item which is being heated or treated with the irradiation energy.

A high temperature vacuum furnace including a prefabricated tongue-and-groove, low-mass insulation ring assembly hot zone, resulting in decreased energy costs and increased energy efficiency, faster heating and cooling cycles, and expedited maintenance capability resulting in lower maintenance costs. Decreased time of a workpiece in the furnace improves production turnaround and lowers energy costs for each heat treating cycle. Furnace manufacturing is also easier and less expensive compared to prior art vacuum furnaces. A bottom support structure replaces the prior art metal support ring resulting in an approximately 80-85% weight saving in the furnace hot zone. This reduces the time and energy required to heat and cool the furnace components and workpiece.

The present invention relates to a process of making power-saving electric stoves, particularly having a large size and outer shapes similar to the conformations of traditional Tyrolean heaters or stoves, while having a very light weight and being easily movable to multiple locations of a house. The main characteristic of the present invention is that it includes making a hollow stove body, particularly having a large size, from expanded polystyrene or a similar thermoplastic polymer, with the application of an electric resistor, particularly a constant-power, and hence low-power consuming heating cable arranged around its outer surface in one or more coil loops with the interposition of a layer of adhesive material with at least one thread formed therein for supporting the resistor, with contiguous insulating grooves, and with later application of a final coating layer, made e.g. of tire-resistant cement mortar, whose outer surface may be provided with decorative designs or finishes and ornaments made of wood or other materials, which designs and ornaments may be similar to those formed on the outer surfaces of traditional Tyrolean stoves, whereas the basement of the hollow body is preferably supported by a smooth metal plate, allowing displacement thereof to any location of the house, proximate to a power outlet.

A dental furnace for firing dental-ceramic compounds comprises a firing chamber for receiving ceramic elements to be fired. Further, a heating device for heating and firing the ceramic element is provided. The heating device comprises at least one heating element for producing IR radiation in the range of 0.8-5 m.

The present invention provides a high temperature vacuum furnace that includes a prefabricated solid tongue-and-groove HEFVAC insulation ring assembly hot zone with significantly reduced overall mass, resulting in increased energy efficiency, faster heating and cooling cycles, reduced electricity costs, and expedited maintenance capability thus resulting in lower maintenance costs. The present design eliminates the prior art heavy, fully enclosed metal support ring designed to ensure retention of the insulation shield packages, including all retainer pins and nozzles in place during the heating and high pressure gas quenching cycles, found in prior art vacuum furnaces. The prior art metal support ring is replaced with a bottom support structure whose mass is approximately 80-85% less than the mass of the old support ring. Reducing the mass within the furnace chamber reduces the time and energy it takes to heat and cool the furnace components and the workload being heat treated. Decreased time in the furnace improves production turnaround and lowers energy costs for each heat treating cycle. In one embodiment the prefabricated HEFVAC insulation assembly outer surface contains a very thin stainless steel sheet of approximately 0.030 inches thick, which acts as a low emissivity reflective shield between the prefabricated insulation board ring assembly and the outer water-cooled furnace chamber wall. In another embodiment the prefabricated HEFVAC insulation assembly has no stainless steel sheet on its outside surface adjacent to the furnace plenum and the outer water-cooled furnace chamber wall. The present furnace is easier and less expensive to manufacture compared to prior art vacuum furnaces, and requires less energy to operate.