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US 4,097,227 AGranted
Air moving device with oil fired heating apparatus
AssigneeAerovent, Inc.
InventorJames A. Brock
Life of this patent
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AssigneeAerovent, Inc.
InventorJames A. Brock
Estimating the term…
Apparatus for drying and/or curing cereal grains, tobacco and other materials, elements of which may be ingested by human beings, comprises a tube defining a flow passage in the inlet end of which is positioned a device for moving a pressured flow of air through said passage and in the outlet end of which is positioned and projected therefrom a means defining a combustion chamber. In connection with the combustion chamber are means arranged to deliver and ignite oil to produce a flame capped by and projected interiorly of the combustion chamber. The flame is enveloped in a pressured flow of air the impetus of which has its source in a blower embodied in an oil burner assembly mounted on the outer surface of the tube, which burner assembly provides for a pressured delivery of the oil. Means are provided to insure that the oil burner assembly and its blower are operating under pressure equal to or greater than the pressure of the air flow through said tube. The arrangement of the combustion housing and the flame created is such to provide for a turbulent condition in the burner housing as a result of which the products of combustion issue from the combustion chamber in an essentially clean condition. A secondary chamber is provided in the preferred embodiment illustrated, in which the products of combustion issuing from the combustion chamber may have undesirable content thereof, if any, finally broken down and vaporized before entering the pressured flow of air exiting from the tube. In the drying or curing system illustrated the outlet end of the aforementioned tube is inserted in a wall structure forming part of a flow channel underlying the apertured floor of a drying or curing chamber. The inlet end of the tube is inserted in means defining a chamber communicated on the one hand with the atmosphere and on the other hand with the interior of the drying or curing chamber. On operation of the air moving device in said tube, the pressurized flow of air developed thereby moves through and outwardly of said tube where it entrains the total of the products of combustion of oil which has issued from said combustion chamber, to be heated thereby and to move therewith to and through the floor of the drying or curing chamber to serve its intended function. The exhaust air resulting in such chamber is selectively totally or partially exhausted to the atmosphere. In the latter case a portion is directed to intermingle with the air drawn from the atmosphere to pass through the aforementioned tube for heating as described.
Apparatus for drying and/or curing cereal grains, tobacco and other materials elements of which may be ingested by human beings comprising, a housing having an inlet thereto, an outlet therefrom and means forming a passage connecting said inlet with said outlet, a device operable to produce and move a pressured flow of air through and from said passage by way of said outlet, means defining a combustion chamber positioned within said passage in the path of said pressured flow of air in its movement to and through said outlet, means arranged to deliver and ignite a combustible mixture of air and oil under pressure to produce a flame which is capped by and projects interiorly of said means defining said combustion chamber, said means defining said combustion chamber including an exit for products of combustion in the form of a relatively restricted outlet from said combustion chamber, said means to deliver the combustible mixture of air and oil to said combustion chamber being arranged to deliver said mixture into said chamber in a manner to impact unconsumed oil particles thereof on an interior wall surface of said chamber to facilitate their vaporization, said restricted outlet and the manner of delivery of said combustible mixture promoting turbulence in said combustion chamber leading to a thorough burning therein of combustible materials, and means arranged to provide a surface on which the products of combustion which exit from said restricted outlet impact prior to such products joining the pressured flow of air moving from said housing by way of said outlet.
Apparatus for drying and/or curing cereal grains, tobacco and other materials elements of which may be ingested by human beings comprising, a housing having an inlet thereto, an outlet therefrom and means forming a passage connecting said inlet with said outlet, a device operable to produce and move a pressured flow of air through and from said passage by way of said outlet, means defining a combustion chamber positioned within said passage in the path of said pressured flow of air in its movement to and through said outlet, means arranged to deliver a combustible mixture of air and oil under pressure and to ignite said mixture to produce a flame which is capped by and projects interiorly of said means defining said combustion chamber including an oil burner assembly having a blower mounted on the outer surface of said housing, said oil burner assembly including means for directing oil through delivery means the terminal portion of which is located in communication with said combustion chamber, means facing the flow of air through said passage to directly receive therein a portion thereof and communicate the same with said blower, said blower having in connection therewith means to deliver therefrom a pressured flow of air to intermingle with the delivered fuel and provide said combustible mixture in said combustion chamber, the arrangement providing that said burner assembly is operated under essentially the same pressure conditions as exist in said housing flow passage, said air and oil delivery means being arranged to deliver the air and oil to said combustion chamber in a manner to provide on ignition thereof that unconsumed oil particles will impact on the inner wall surface of said chamber to facilitate vaporization thereof and said combustion chamber including means for exit of products of combustion therefrom by way of a relatively restricted outlet, said restricted outlet and the manner of delivery of said combustible mixture promoting turbulence in said combustion chamber leading to a thorough burning therein of contained combustible materials.
Apparatus for drying and/or curing cereal grains, tobacco and other materials elements of which may be ingested by human beings comprising, a housing having an inlet thereto, an outlet therefrom and means forming a passage connecting said inlet with said outlet, a device operable to produce and move a pressured flow of air through and from said passage by way of said outlet, means defining a combustion chamber positioned within said passage in the path of said pressured flow of air in the course of its movement to and through said outlet, means arranged to deliver and ignite a combustible mixture of air and oil under pressure to produce a flame which is capped and projects interiorly of said means defining said combustion chamber, said delivery and ignition means comprising an oil burner assembly including a blower mounted on the outer surface of said housing, said oil burner assembly including means for directing oil through said delivery means the terminal portion of which is located in communication with said combustion chamber and adjacent ignition means, said oil burner assembly further including an air inlet section for said blower and means defining an enclosure for said air inlet section, an air scoop being provided in said housing flow passage in communication with said air inlet section of said blower to direct air from said passage to said enclosure and provide thereby for said burner assembly to operate under essentially the same pressure conditions as those which exist in said housing flow passage, said means to deliver and ignite said combustible mixture so directing said mixture into said combustion chamber as to cause unconsumed oil particles of the mixture to impact on an inner wall surface of said means defining said combustion chamber to facilitate vaporization thereof, said combustion chamber having a restricted outlet and said restricted outlet and the manner of delivery of said combustible mixture promoting turbulence in said combustion chamber leading to a thorough burning therein of combustible materials.
Apparatus for drying and/or curing cereal grains, tobacco and other materials elements of which may be ingested by human beings comprising, a housing having an inlet thereto, an outlet therefrom and means forming a passage connecting said inlet with said outlet, a device operable to produce and move a pressured flow of air through and from said passage by way of said outlet, means defining a combustion chamber positioned within said passage in the path of said pressured flow of air in its movement to and through said outlet, means arranged to deliver a combustible mixture of air and oil under pressure and ignite the same to produce a flame, which flame is capped by and projects interiorly of said means defining said combustion chamber, said combustion chamber having a relatively restricted outlet for eventual exit of products of combustion therefrom for movement to and with said pressured flow of air to have essentially the total thereof utilized in the drying and/or curing of the materials to which said apparatus is applied, and said means to deliver and ignite a combustible mixture of air and oil being arranged to introduce said mixture into said combustion chamber approximately at right angles to the direction of movement of products of combustion in exiting from said restricted outlet in a manner to impact unconsumed oil particles on the inner wall surface of said chamber to facilitate vaporization thereof, said restricted outlet and the manner of delivery of said combustible mixture promoting turbulence in said combustion chamber leading to a thorough burning therein of combustible materials.
Apparatus for flowing heated air in direct contact with cereal grains, tobacco and like material for drying or curing thereof, including means for generating and directing a forced flow of air, said means operating against a static pressure varying with the restriction to flow imposed by said materials, means for heating the flowing air including means defining a combustion chamber positioned in said forced air flow and providing an outlet from said chamber through which products of combustion escape to join said forced air flow against the resistance of said static pressure, means for pressurizing said combustion chamber using air supplied thereto for combustion, and means for varying the pressurization of said chamber in correspondence with variations in the static pressure.
Dependencies are inferred from the claim text.