Abstract: The invention provides a shuttle kiln that can fire ceramic porous bodies containing organic binders in a shorter period of time than in conventional methods without occurring breaks due to a temperature difference between the inside and the outside. The shuttle kiln of the invention is suited for firing of ceramic porous bodies containing organic binders. It includes a gas suction path 4 that suctions in-furnace gas and discharges it via an afterburner 5 and a circulation path 7 that suctions the in-furnace gas to the furnace outside to burn organic binder gas and then returns it into the furnace.

Abstract: An object of the invention is to provide a substrate treatment device that can lengthen the maintenance cycle, and prevent any by-product from falling on substrates even if it is accumulated, and a manufacturing method of such a substrate treatment device, and an embodiment of the invention is directed, comprising: a treatment chamber that subjects a substrate to a treatment while keeping hold of it by a substrate retention member; a reaction tube that configures the treatment chamber; a heating device that is disposed around the reaction tube for heating the treatment chamber; and an exhaust tube that is linked to the reaction tube on an upper side than the substrate inside of the treatment chamber and is extended downward from the heating device, and exhausts a gas inside of the reaction tube in which an extension portion as a result of the extension is disposed away from the reaction tube.

Abstract: A heating apparatus includes at least a pair of regenerative burner units having a fuel injection nozzle and a heat regenerator provided for a combustion air supply path. One regenerative burner unit is supplied with fuel through a fuel shut-off valve and a fuel change-over valve, and supplied with combustion air through a supply and exhaust change-over valve to perform combustion operation. The other regenerative burner unit performs heat regenerating operation by passing a combustion waste gas. Operations of the fuel shut-off valve, the fuel change-over valve and the supply and exhaust change-over valve are controlled depending upon an operation parameter of the heating apparatus.

Abstract: A conveyor oven is described having increased efficiency from enhanced flow therethrough. The oven consists of an upper plenum, a lower plenum, and a return plenum. The upper plenum is disposed above the conveyor and dispenses heated air through nozzles downwardly. The lower plenum is disposed below the conveyor and dispenses heated air upwardly. The upper and lower plenums are tapered from a maximum width of 21/2 inches to a minimum of no more than 15% thereof across the path of travel of the conveyor. A blower having a vertical axis of rotation is located at a midpoint between the upper plenum and the conveyor and a burner is located below the inlet between the inlet thereto and the return plenum. The outlet from the blower directs air through scrolls onto a baffle plate having rounded edges and from there into the upper and lower plenums.

Abstract: A fiber treatment oven is disclosed in which hot gas is flowed parallel to and between fiber pathways within the oven to reduce deflection and breakage of fibers and to reduce end-to-end temperature variations in the oven. Hot gas is emitted centrally of the oven and flows toward ends of the oven. Preferably, an additional, generally tubular stream of hot gas is emitted centrally of the oven and generally surrounds and envelopes the fiber pathways to reduce side-to-side temperature variations.

Abstract: A grain drier comprising a plurality of horizontal conveyor belts arranged one above another in staggered relationship so that grain delivered to one end of the upper conveyor belt will drop onto the lower conveyor belt when it gets to the other end of the upper conveyor belt and will then travel along the lower conveyor belt in opposite direction before being discharged. Hot air is supplied by a hot air generator through conduits to a position below and along each of the conveyor belts, passes upwardly through the conveyor belts which are formed of wire mesh and through the grain thereon and is extracted through discharge conduits from above the conveyor belts. The flow rate and temperature of the hot air may be varied. Heat from the extracted air may be recovered and recycled into the hot air generator. Also heat from the dried grain may be recovered and reconducted by means of a blower fan through a conduit onto the incoming fresh grain.

Abstract: Heating apparatus for a baking oven or the like wherein product to be heated or baked is conveyed through the oven, and a plurality of heating elements are arranged longitudinally along the path of product movement through the oven, the heating elements each comprising a conductive tube extending transversely across the path of product movement, a burner at one tube end for introducing a combustible mixture therein, and combustion products outlet means at the other tube end for discharge into the oven chamber.

Abstract: Apparatus for heat shrinking pre-oriented polyolefin plastic sleeves over the outer surface of a glass bottle. The bottles with sleeves in position thereon are gripped and suspended from rotatable chucks spaced along a movable conveyor means extending through an oven. The oven is constructed with a first zone of infrared burners directed at the mid body of the bottles and a succeeding second zone of infrared burners in upper and lower placement are directed at the neck and heel portions of the bottle, respectively. During travel past the burners, the bottles and sleeves are rotated at controlled speed to prevent collapse of the sleeve as it becomes heated. Opposite the burners is an exhaust section of the oven having plural sets of damper means, each set controlling air flow in plural vertically spaced horizontal rows of exhaust ports along the length of the oven. Air is drawn across the oven and over the conveyor chucks to aid directing heat on the sleeves and cool the chucks.

Abstract: This disclosure relates to glass annealing lehrs in which glass ware is supported on an endless conveyor to convey it through a closed tunnel consisting of separately controllable temperature zones which expose the ware to a glass annealing temperature gradient produced and maintained by gaseous fuel burners and electrical heaters employed separately or jointly, depending upon the availability of the fuel or electrical energy. In accordance with the invention, circulating fans are positioned at both sides of each lehr section, and air inlet ducts are provided for admitting controlled amounts of ambient air to the inlet of each fan.

Abstract: This invention relates to a U-fired soaking pit in which an auxiliary burner 4, e.g. a tunnel burner, is located below the main burner 3 to supplement the heat flow and heat transfer therefrom. The auxiliary burner is mounted between twin exhaust flue 5,6 and is vertically in line with the main burner, the main and auxiliary burners being disposed equi-distantly from one another and from the top and bottom of the furnace, respectively.

Abstract: Small articles such as springs are heat treated as they flow downward by gravity through a straight cylindrical tube. The tube need not be cylindrical or straight and means to assist gravity may be provided. The articles are heated by hot air or other gas introduced to said tube through apertures in its walls and which flows through portions of the tube at high velocity. Hot air thus introduced is withdrawn through other apertures in the walls of the tube in a manner to prevent heat loss by exhaust of the hot air at either end of the tube or by introduction into the tube of ambient cool air at either end of the tube.

Abstract: An oven for heating tubular parisons to a target or orientation temperature. A first plenum on one side of the oven and a second plenum on the opposite side of the oven, both exhaust to a common chamber disposed therebetween. The parisons are heated by a high velocity fluid above the target temperature in the zone defined by the first plenum and the chamber and the parisons are tempered by a lower velocity fluid at the target temperature in the zone defined by the second plenum and the chamber.