Abstract: A color erasing apparatus according to an embodiment includes a color erasing unit that heats a recording medium having an image formed with a plurality of decolorable materials to a setting temperature. A controller sets the setting temperature of the color erasing unit to be lower than a highest color erasing temperature among plural color erasing temperatures of the plurality of decolorable materials, and to be equal to or higher than a lowest color erasing temperature among the plural erasing temperatures.

Abstract: A curing oven includes a set of pivoting, rotating trays within a curing chamber. The trays are attached to a mechanism that rotates the trays through a curing cycle, and the speed and timing of the rotation may be set by an operator, as desired. In a preferred embodiment, the oven includes a plurality of heating elements, a commercial dehumidifier, a recirculating fan and system, temperature and humidity sensors, and a series of pivoting trays attached to a motorized rotational assembly. The oven is controlled by a various controllers, which may be programmed to set the temperature, humidity levels, rotation speed and cycle time, and other aspects of oven operation. A loading and unloading chamber is effectively sealed off from the curing chamber within the oven, preventing or reducing a transfer of air between the curing chamber and the ambient air outside of the oven.

Abstract: Provided is a substrate treating apparatus. The substrate treating apparatus includes a chamber, a support member disposed within the chamber to support a substrate, and an exhaust member for exhausting a gas within an inner space of the chamber to the outside of the chamber. A trap space for collecting fumes contained in the gas is defined in the exhaust member.

Abstract: A substrate cooling device includes a cylindrical heat shielding member 30 configured to be movable between an insertion position where the heat shielding member 30 is inserted between the substrate holding member 15 in a processing vessel 11 and a heating member 12 and an unloading position where the heat shielding member 30 is unloaded from the insertion position, and configured to block radiant heat toward the substrates W after completing a heat treatment; and an air cooling port 21 provided at an outside of the processing vessel 11. The heat shielding member 30 includes two half-cylindrical members 31 that are assembled and separated at the unloading position, and is movable between the unloading position and the insertion position. An outer surface and an inner surface of the heat shielding member 30 are made of materials having a relatively low emissivity and a relatively high emissivity, respectively.

Abstract: Provided is an oven that includes an oven chamber through which a product passes to be treated. An oven wall defines apertures through which the product passes to repeatedly enter and exit the oven chamber during treatment. A vestibule chamber is disposed adjacent to the oven wall and encloses a return air duct that draws in ambient air entering the vestibule chamber and the process gas entering the vestibule chamber from the oven chamber through at least one of the apertures in the oven wall. A nozzle is provided externally of the vestibule chamber and oven chamber in fluid communication with the return air duct. The nozzle receives gas drawn in by the return air duct and directs the combination generally toward at least one aperture formed in the vestibule chamber through which ambient air can enter the vestibule chamber to form an air curtain adjacent to the at least one aperture.

Abstract: An erasing apparatus of embodiments has a color erasing device, the color erasing device has: a first heating member; a second heating member provided at a position facing the first heating member so as to form a nip portion therebetween through which the sheet is passed; a halogen lamp configured to heat the second heating member from outside thereof; and a reflector provided at a position opposite to the second heating member with the halogen lamp interposed therebetween and having a reflective surface configured to reflect heat received from the halogen lamp toward the second heating member, the reflector forming a guiding section configured to be in sliding contact with the sheet being conveyed so as to guide the sheet to the nip portion, the guiding section being heated by the halogen lamp.

Abstract: A conveyor oven defines a heated cavity having an inlet opening and an outlet opening. A conveyor within the cavity extends between the openings. A cover plate is coupled to the oven to at least partially define one of the openings. The cover plate includes at least one air intake hole and at least one air return hole in fluid communication with one another through the first cover plate. Heated air in the cavity enters the cover plate through the at least one air intake hole adjacent the opening and exits the cover plate through the at least one air return hole at a location within the cavity that is spaced from the opening, thereby redirecting heated air that would otherwise escape the cavity from the opening back into the cavity.

Abstract: An insulating curtain assembly for a continuous furnace, having an extremely durable woven metal-wire covering protecting a thermal insulating fabric which lacks durability. A plurality of horizontally oriented hinges enable the curtain to closely follow a top surface of products having varying thicknesses when those products are entering or exiting the furnace.

Abstract: A portable griddle stove has two non-stick cooking surfaces, either of which can withstand being on the underside of the cooking surface in use and the heat applied to the underside surface. A heat shield and heat diffuser control the temperature applied to the underside of the cooking surface by providing radiant heat to the center portion of the cooking surface and cooling the combustion gas diffused to the perimeter of the cooking surface. Secondary air provided through openings in case the and heat shield assist in cooling the combustion gas.

Abstract: A forced air heating system has a heat regulating unit assembled therewith, the heating system comprising a furnace having fuel burner and a flue pipe for outlet gases. The heat regulating unit has a metal flue conduit with a flue gas inlet and a flue gas outlet connected to the flue pipe in proximity to the furnace to form a portion of the flue pipe. An elongated casing surrounds the flue conduit and defines with the flue an annulus in which a series of equispaced metal fins extend radially from the flue conduit to the casing to define chambers containing a heat-absorbing material such as metal wool. The heat regulating unit functions as a heat-sink to absorb heat from the hot fuel and a heat source gases for return to the furnace by conduction and convection.

Abstract: In a heat shield (1), in particular for combustion chambers and for thermal fluid flow machines, the heat shield consists of a feltlike material (3) composed of compressed and sintered intermetallic fibers. Advantageously, the intermetallic fibers consist of an iron based or nickel based intermetallic phase.

Abstract: An apparatus including a housing defining a heating process chamber. The housing has an opening communicating the process chamber to the ambient atmosphere. A burner is included that fires into a combustion chamber to heat gas. Also included is a collector structure located outside the opening. The collector structure is configured to collect air and exfiltrated gas from an outside area adjacent to the opening. The apparatus also includes a duct structure communicating the collector structure with the burner so as to supply the collected air and exfiltrated gas to the burner and thereby to supply combustion oxidant to the burner.

Abstract: An apparatus for the treatment of a waste gas that is capable of recovering the heat generated by the catalytic oxidation of a waste gas to the largest possible extent and allowing the temperature of the treated gas in a first waste gas pre-heater to be adjusted to an arbitrary level incapable of condensing moisture and/or corrosive gas is provided.

Abstract: An asphalt plant is provided with a system for containing noxious and nuisance gases and fumes generated therein. The system includes a substantially air tight casing encircling an slat conveyor of the plant, a substantially air tight elevator chute having a substantially air tight connection to each of a drum dryer/mixer and the casing, a batcher chute having a substantially air tight connection to each of the casing and a batcher of the plant, a substantially air tight seal between the batcher and a silo of the plant, and a bypass duct bypassing the seal between the batcher and the silo such that a negative pressure created in the drum dryer/mixer by a power exhaust of the plant is distributed substantially throughout various components of the plant as the batcher and the silo contain sufficient asphalt material being processed by the plant such that air and other gases and fumes contained within the plant are prevented from escaping directly into the ambient atmosphere.

Abstract: An apparatus for coiling strip, in particular, continuously cast thin slabs, which after leaving the continuous caster are wound into a coil in a furnace at a casting speed, and are payed out of this furnace at a rolling speed, whereby preferably two furnaces are preferably located one above the other for alternating coiling and payout. To improve an apparatus of the type described above for the coiling of strip which has only small thermal losses in a largely closed furnace, and has the smallest possible number of moving parts inside the furnace to achieve a high degree of operational safety and reliability. The invention proposes that each furnace has a threading opening for the strip which is largely closed by a pair of pinch rolls, and together with the pair of pinch rolls, can be pivoted around its horizontal axis, which corresponds to the coiling axis, from the coiling position into the payout position.

Abstract: Screens for limiting heat losses from heated material, e.g. bars and slabs in rolling mills. Screens are provided in the form of strings of heat insulating bodies composed of metal shells containing insulating material. These screens may form curtains and/or covers for the hot material. Containing chambers for the hot material may be provided with such strings of elements and the chambers may also comprise structure for limiting heat conduction losses through the material supports therein. The screens may be collapsed over the hot material thereby completely surrounding and insulating the material from loss of heat. A displaceable chamber installation may also be provided for limiting heat loss when holding and transferring hot material between processing stages.

Abstract: A rectangular cross-section housing is provided for an apparatus generating hot gas to shrink a plastic film. A burner is located close to the upper small end of this housing while an outlet nozzle is provided at the lower small end and the gas flows at an obtuse angle from the burner to the outlet. The burner is flanked by lamellae and a venturi action draws cool air between the lamellae and the burner, additional cool air passing between the lamellae and the vertical housing walls. Cold-air nozzles are provided within the housing as well.

Abstract: Screens for limiting heat losses from heated material, e.g. bars and slabs in rolling mills. Screens are provided in the form of strings of heat insulating bodies composed of metal shells containing insulating material. These screens may form curtains and/or covers for the hot material. Containing chambers for the hot material may be provided with such strings of elements and the chambers may also comprise structure for limiting heat conduction losses through the material supports therein. The screens may be collapsed over the hot material thereby completely surrounding and insulating the material from loss of heat. A displaceable chamber installation may also be provided for limiting heat loss when holding and transferring hot material between processing stages.

Abstract: A thermally insulating block array is partially covered by thermal conducting sheets so as to enhance re-radiation of heat losses from a heated product in order to facilitate effective temprature control. The thermal conducting sheets preferably cover the face of the thermal insulating blocks which face the heated product and preferably cover the lateral surfaces of the blocks and portions of the rear surface to resist direct exposure of the thermal insulating block to the heated product.

Abstract: A coiler-furnace unit comprises a coiler having a heatable coiler mandrel, which is disposed in a heat insulating housing, and strip guiding means comprising pressure applying rollers for engaging a strip to be coiled at least two cylindrical guide shoes, which extend around and are engageable with the coiler mandrel. In order to avoid heat losses, at least one heat insulating shielding element is provided, which is adapted to be introduced into the annular clearance defined on one side by the guide shoes when they have been retracted from the coiler mandrel and by the pressure-applying rollers and on the other side by the coiler mandrel or the strip coiled on said mandrel.

Abstract: A refractory block design for re-radiating a substantial amount of heat losses back to a heated product thereby substantially maintaining its required temperature. A relatively thin sheet of stainless steel, i.e. the ratio of the thickness of the sheet being approximately 1/500th of the thickness of the heated product, is wrapped in a sinuous manner around one side of a refractory fiber block arranged in a similar sinuous manner to tightly fit into the folds of the block for storing heat, and radiating heat back to the heated product when thermal equilibrium therebetween is reached.

Abstract: A plurality of cords of heat resistant material are disposed adjacent to one another in a plurality of layers. A heat resistant tape material having an adhesive formed thereon in a pair of beads is wrapped around the center portions of the cord members so as to form a pair of free hanging curtain sections effective to block gas flows in a heat treatment furnace or the like. The adhesive is also heat resistant, and the use of a tape to form this curtain assembly enables the same to be independent of mounting hardware such as clamped mounting plates. The vertical position of the curtain assembly may be adjustable so as to compensate for wear during use.

Abstract: Apparatus and method for substantially blocking the "line-of-sight" between a radiant section of a furnace and a convection section positioned above the radiant section, while at the same time permitting flue gases from the radiant section to travel substantially freely through the shield. The shield may be composed of a plurality of staggered bodies. In a preferred embodiment the bodies are staggered plates, composed of insulating material. The staggered plates are supported by hangers that are hung from convection tubes in the convection section. In another embodiment the staggered bodies are tubes or rods.

Abstract: A composite thermal insulation panel for a metal processing installation has a thin-walled casing providing a cover plate or membrane that will be heated quickly to near the temperature of an adjacent hot metal slab or strip being processed. To allow substantial freedom for movement relative to adjoining regions of the casing due to thermal expansion caused by the large temperature changes, retaining elements of the casing that locate the membrane transversely to its extent but permit relative movement in its own plane, and/or the membrane may have surfaces that slope to a central region to accommodate relative thermal expansion by flexure. Panels below the material path may have membrane surfaces that slope downwards to an escape aperture for scale dropping from the hot metal. Panels above the material path may have apertures aligning with the lower panel apertures for temperature sensors that detect the passage of hot material between the panels.

Abstract: Reaction vessels, furnace tubes, heating and cooling enclosures frequently have parts such as access ports, inlet tubes, inspection windows, etc. made of thermally transparent materials such as plastic, glass, quartz, oxides, nitrides and sulfides. When these parts extend outside the hot zone, they can act as "light pipes" carrying appreciable amounts of thermal radiation which can damage thermally sensitive gaskets or other materials used to secure external couplings or end closure flanges to these parts. Thermal radiation induced gasket damage is a frequent cause of stuck flanges and couplings. This problem is avoided by inserting a thermal radiation scattering region in the thermally transparent material between the hot zone and the end closure or gaskets. The thermal radiation is scattered and dispersed, so that the end zones receive less radiation and remain cooler. Milky quartz is a suitable scattering material for use with quartz furnace tubes or bell jars.

Abstract: Protective panels are disclosed for insulating walls and other combustible surfaces from a nearby stove or other heating device. Simple, economical shallow U-shaped pieces, one positioned upon the other, create two distinct conduits through which air flows upwardly. Also, the panels reflect radiant heat back towards the stove or other heat source and away from the area protected. A plurality of these double conduit panel members provide an insulating barrier between the heat source and the combustible surface to cover areas of any desired size.

Abstract: A coiled arrangement of pipes convey a heated medium, such as a slurry, into, through, and out of a heater or fire box provided with an arrangement of high velocity burners. The heater is fired to a preselected elevated temperature. A plurality of radiation shields are positioned in close proximity to the surfaces of the pipes conveying the medium for heating. The position of the radiation shields relative to the pipes forms inner and outer heating zones within the heater to provide different flame temperatures. The radiation shields function as a physical barrier to prevent direct contact of the fuel flame and combustion products with the pipes. Thus the radiation shields are maintained at a higher temperature than the surfaces of the pipes and at a lower temperature than the combustion products.

Abstract: An open hearth oven having an opening at the front thereof is provided with a shield arrangement for shielding against escape through the oven opening of infrared radiation emitted by radiating elements within the oven chamber. The shielding structure permits the introduction of objects into the oven chamber for being heated therein by infrared radiation while reflecting radiation back into the oven chamber. The shielding is configured and positioned for allowing introduction and removal of the objects without movement or removal of the shielding. Yet it is swingably mounted for being swung upwardly to a retracted position for facilitating access to the oven chamber through the opening. The shielding may be lowered in the retracted position but is selectively released to swing to the radiation blocking position as by use of a peel, such as utilized for handling of food products. The shielding is also readily removable from the oven, such as for cleaning.

Abstract: A combination heat transfer panel and wall shield for use with stoves and other radiant heaters. The device comprises a case housing two parallel, spaced curtains defining first and second convection chambers. The case is adapted for location either against, or in spaced relation to a structural wall behind a radiant heater. It is formed with a large central opening permitting entrance of radiant energy from the stove, a cold air inlet communicating with the convection chambers either at the lower end of the case or at the sides, and a hot air exhaust communicating with the upper end of the convection chambers. The outermost curtain may be constructed for adjustment between positions in which it absorbs or reflects radiant energy, as desired.

Abstract: A diffusion furnace having particular utility in the processing of SOS devices wherein a temperature gradient, per unit length of furnace tube, is provided at a section of a reaction tube extending between the furnace and the scavenger and load-unload chambers in order to minimize the thermal shock to which a sapphire wafer may be subject, either at the commencement of processing when the wafer is first introduced into the furnace or at the conclusion of the processing as the wafer is being withdrawn from the furnace.

Abstract: Pass-through heating device for vacuum coating apparatus having a heating chamber with at least one heating device, a thermal barrier positioned between the walls of the heating chamber and the heating device parallel to the longitudinal axis of the coating apparatus.

Abstract: A combination safety and heat conservation panel is disclosed for use with coal or wood heaters or the like. Where the stove flue passes through a wall, the panel is placed between the wall and stove. The panel is hollow, permitting heat radiating from the stove to pass through the panel wall to the panel interior. From the panel interior, the hot air is directed by appropriate means, including fans, baffle and fins, out an end of the panel where it may more freely circulate within the room itself, or whereby, with appropriate connecting pipes, the heat may be directed to other rooms of the house.By thus absorbing and transferring heat which would otherwise tend to collect in hot spots between the heater and the wall, enhanced safety against fire and heat damage is provided. A further benefit derives from providing better circulation of heat in the room by removing the heat from the unneeded area proximate the heater and the wall and transferring it or allowing it to flow naturally to other parts of the room.

Abstract: A vertical strip heating furnace includes at least two vertical direct fired heating chambers which are arranged in parallel which are communicated with each other. A separation chamber for housing inside furnace rolls at adjacent pairs of the chambers is provided in at least one location. The inside furnace rolls are separated from the main flow of the combustion gases and the temperature of the atmosphere in the chambers housing the inside furnace rolls is adjusted to within a fixed range. This strip heating furnace is capable of large capacity processing and is designed to save energy, and the inside furnace rolls are free from breakage due to thermal stress.

Abstract: Insulating material, of compacted structure and of low thermal conductivity, is formed of silica-based primary particles; it is obtained by heat treatment of a compound of silane, of which the mean diameter is at most equal to 100 A; the apparent density .rho.a expressed in g/cc is between 6.10.sup.-3 and 2.3.10.sup.-3 d, d being the mean diameter of the primary particles expressed in A; in addition, this apparent density is at most equal to two thirds of the density of the solid material.This material is applicable as a thermal insulator in the field involving low temperatures and high temperatures and in the building sector.

Abstract: A cooking apparatus employing a purging device.In the apparatus, an exhaust gas which is produced from food being cooked in a cooking chamber is passed through the purging device and is exhausted to the exterior of the chamber at a temperature of 130.degree. C or at a discharge rate of higher than 0.5 m/sec thereby being purged sufficiently.

Abstract: A fire prevention device for a fixing stage of an electrophotographic copying machine includes a heat shield plate movable to close the fixing stage. The heat shield plate may be controlled by a control mechanism having first and second solenoids so that the heat shield plate shuts the fixing stage only when a driving power for the copying machine is stopped or an abnormality is detected in a fixing step, during the copying operation.

Abstract: In a machine, for making corrugated paper, of the kind including hollow cylindrical rollers, a process and apparatus is provided for improved heating of the rollers. Liquefied gas is burnt within the hollow interiors of the rollers, and the rollers are heated by radiation from the resultant combustion gases. A combustion tube is fitted into the interior of each roller, and a liquefied gas jet burner is located outside each roller and includes a nozzle directed towards one end of the combustion tube. A radiator tube is provided within the roller in surrounding spaced relation to the combustion tube, forming an annular space therebetween through which auxiliary air is supplied. The radiator tube is heated primarily by radiation from the combustion tube, and transmits its heat by radiation to the roller. Means are provided for cooling each bearing of the rollers.

Abstract: A furnace work supporting roll and a spare work roll are mounted on a frame in diametrically opposed positions with the spare roll normally out of the furnace. The frame is mounted on an axis parallel to the roll axis and equal distance therefrom. A water cooled shield is mounted on the frame between the rolls to protect the spare roll from the heat of the furnace and has an outer surface with a diameter equal to that between the outside of the rolls. To inspect and/or remove the work roll from the furnace, the frame is rotated so that the position of the rolls are reversed. A water cooled heat shield is provided at the ends of the diameter perpendicular to the diameter through the roll axes at a distance equal to that between the outside of the rolls. A roll supporting table beneath the position of the spare roll is movable toward and away from the frame.

Abstract: A shutter, adapted for use in a system for the radiation curing of a line of articles, includes a number of adjacent baffle units, the blades of which are configured and spaced to substantially prevent the passage of radiation, while permitting the flow of air through the shutter. To minimize the tendency of thermal expansion to distort the shutter, the units are expandably mounted along the length of the supporting frame, and the blades extend transversely thereof.

Abstract: An apparatus for drying a chemical product containing a burnable liquid by igniting and burning the liquid from the product, consisting of means for contacting the product with a burnable liquid, means for feeding the product and means for cooling the product and liquid to a temperature below the ignition temperature of the liquid, continuous conveyer means for transporting the product to a burning chamber, the burning chamber having inlet means for the product, combustion air inlet means, ignition means for igniting the burnable liquid and outlet means for hot combustion gases and outlet means for the dried product.