Reversible Or Pulsating Treating Gas Or Vapor Flow Patents (Class 34/191)
  • Patent number: 9833014
    Abstract: Apparatus and method for treatment of a particulate material employs a conveyor belt for supporting the particulate material for transport and a source of gas for delivery through the conveyor belt to fluidize the particulate material. A gas distribution system is used for controlling the gas flow to create regions of greater and lesser fluidization. This approach avoids the use of mechanical agitation of the conveyor belt which improves efficiency and reliability. The apparatus and method find particular application in the handling of particulate foodstuffs in bulk when treatment such as freezing, heating, or blanching of individual food particles is required.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: December 5, 2017
    Assignee: FPS Food Process Solutions Corporation
    Inventors: Kin Hung Jeffrey Chang, Justin Sum Ming Lai
  • Patent number: 9139627
    Abstract: A dried distiller soluble based biopolymer, processes for forming the biopolymer, and articles of manufacture thereof. The produced dried distillers solubles derives from co-products of corn fermentation facilities and is comprised in part of water-soluble proteins. A biopolymer consists essentially of dried distillers solubles, and an article of manufacture includes a biopolymer consisting of dried distillers solubles and an optional additive. The process of forming dried distiller solubles involves separating whole stillage into a liquid fraction and a solid fraction, wherein the liquid fraction comprises water soluble proteins in an amount greater than the solid fraction, and wherein the solid fraction has a higher solid content than the liquid fraction. The liquid fraction is sprayed at an elevated temperature to remove at least a portion of moisture in the liquid fraction and form particles and granules of the liquid fraction.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: September 22, 2015
    Assignee: GS CLEANTECH CORPORATION
    Inventor: Michael J. Riebel
  • Patent number: 9084978
    Abstract: Systems and methods of producing chemical compounds are disclosed. An example chemical production system includes a combustion chamber having intake ports for entry of a gas mixture. An igniter ignites the gas mixture in the intake chamber to facilitate a reaction at a high temperature and high pressure. A nozzle restricts exit of the ignited gas mixture from the combustion chamber. An expansion chamber cools the ignited gas. The expansion chamber has an exhaust where the cooled gas exits the expansion chamber. A chemical compound product is formed in the expansion chamber.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: July 21, 2015
    Inventor: Bruce H. Peters
  • Patent number: 8697156
    Abstract: Dried distiller's solubles is described. Methods for drying condensed distiller's solubles into dried distiller's solubles are presented. The methods may include introducing the condensed distiller's solubles into a drying gas stream and recovering dried distiller's solubles from the drying gas stream.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: April 15, 2014
    Assignee: Pulse Holdings, LLC
    Inventors: Jeffrey L Tate, James A Rehkopf, David A Mirko
  • Publication number: 20130167396
    Abstract: A system for heating, drying or curing an object, the system comprising a housing having a first wall and at least one second wall adjacent the first wall. The first wall and at least one second wall define an interior for holding an object to be heated, dried or cured. The system also includes an air plenum adjacent to, covering and disposed inward from the first wall, and at least one air plenum opening in the air plenum to supply air into the interior. A fan is disposed in the one air plenum opening. The system also includes a ductwork assembly adjacent to, covering and disposed inward from the second wall. The ductwork assembly is in air-communication with the air plenum, and has a ductwork opening so that substantially all air circulation in the interior is between the air plenum opening and the ductwork opening.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Inventor: Jeffrey C. Mitchell
  • Patent number: 8256134
    Abstract: The apparatus and methods disclosed herein relate to the production of dried co-products from stillage produced by an ethanol production facility.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: September 4, 2012
    Assignee: Pulse Holdings LLC
    Inventors: James A. Rehkopf, Jeffrey L. Tate, David A. Mirko
  • Patent number: 8048205
    Abstract: A lint filter device for an airflow in a tumble dryer, comprising an endlessly circulating element, arranged around at least two deflector elements and positioned such as to be crossed by the airflow. The circulating element has an upper edge and a lower edge and first engaging elements are arranged on at least one of the two edges which, on opening a loading door of the tumble dryer may come to cooperate with at least one second engaging element, arranged inside the tumble dryer such that, on the opening process of the loading door, the circulating element may be automatically moved in a circulating direction and may be passed across at least one device for the removal of lint from the circulating element. The invention further relates to a method for cleaning such a lint filter device.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: November 1, 2011
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventor: Hartmut Schaub
  • Patent number: 7984566
    Abstract: An air drying system and process employs a turbofan jet engine for producing high quality dried products. The air drying system uses both thermal and non-thermal air drying. The turbofan jet engine is housed within an air distribution chamber for directing exhaust air and bypass air from the jet engine into a product drying tube, where it is dried through a combination of thermal drying from heat content in an engine exhaust, and by the kinetic energy of air flowing past the product traveling through the drying tube, that may include a physical impediment for retarding retard the speed of the product solids flowing in the air stream through the tube.
    Type: Grant
    Filed: February 19, 2007
    Date of Patent: July 26, 2011
    Inventor: Wesley A. Staples
  • Publication number: 20110173835
    Abstract: Dried distiller's solubles is described. Methods for drying condensed distiller's solubles into dried distiller's solubles are presented. The methods may include introducing the condensed distiller's solubles into a drying gas stream and recovering dried distiller's solubles from the drying gas stream.
    Type: Application
    Filed: April 4, 2011
    Publication date: July 21, 2011
    Applicant: J. JIREH HOLDINGS LLC
    Inventors: Jeffrey L. Tate, James A. Rehkopf, David A. Mirko
  • Patent number: 7937850
    Abstract: Dried distiller's solubles is described. Methods for drying condensed distiller's solubles into dried distiller's solubles are presented. The methods may include introducing the condensed distiller's solubles into a drying gas stream and recovering dried distiller's solubles from the drying gas stream.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: May 10, 2011
    Assignee: J. Jireh Holdings LLC
    Inventors: Jeffrey L. Tate, James A. Rehkopf, David A. Mirko
  • Publication number: 20100192402
    Abstract: To carry out drying of printing ink with the use of Nano sized high-temperature dryness steam. Nano sized high-temperature dryness steam being clustered on Nano oder is generated and jetted to the print side of printed material so that the Nano sized high-temperature dryness steam imparts intramolecular vibrational energy to ink of the print side. Consequently, the Nano sized high-temperature dryness steam being clustered on Nano oder not only passes through fiber pores in the printed material but also collides with the ink of the print side. The Nano sized high-temperature dryness steam having collided with the ink of the print side imparts thermally excited energy as intramolecular vibrational energy to the ink containing polar molecules. The ink is dried by the intramolecular energy.
    Type: Application
    Filed: July 23, 2007
    Publication date: August 5, 2010
    Applicant: DAIDO SANGYO CO., LTD.
    Inventors: Yasuo Yamaguchi, Kentaro Asakura, Yuji Akiduki, Toshiaki Yamaguchi
  • Publication number: 20090269477
    Abstract: Dried distiller's solubles is described. Methods for drying condensed distiller's solubles into dried distiller's solubles are presented. The methods may include introducing the condensed distiller's solubles into a drying gas stream and recovering dried distiller's solubles from the drying gas stream.
    Type: Application
    Filed: March 5, 2009
    Publication date: October 29, 2009
    Inventors: Jeffrey L. Tate, James A. Rehkopf, David A. Mirko
  • Patent number: 7225819
    Abstract: The present invention is a method, apparatus and process for an improved substrate mounting and processing technique for various substrate treatments comprising cleaning, dicing, sawing, polishing, and planarization, among others.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: June 5, 2007
    Inventor: David P Jackson
  • Patent number: 7194822
    Abstract: A system and method are provided for controllably drying moisture-containing work pieces. The system comprises a drying compartment defining an internal workspace for housing and drying the moisture-containing work pieces by introducing heat into the internal workspace and heating the moisture-containing work pieces located in the internal workspace by removing heated moisture from the work pieces and absorbing the heated moisture into the air in the workspace to produce heated humidified air. A multi-directional air flow heat exchanger is employed for receiving heated humidified air and atmospheric air and for recycling waste heat from exhaust air from the drying compartment, and for heating the atmospheric air in the heat exchanger using recovered heat extracted from the heated humidified air to a temperature higher than ambient temperature thereby reducing energy costs and drying time and preventing the loss of circulation air.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: March 27, 2007
    Assignee: American Wood Dryers, Inc.
    Inventor: Gary L. Kolari
  • Patent number: 6988325
    Abstract: A forage bale dryer is described, which is particularly adapted to dry large bales of forage material, such as hay, alfalfa, etc. The dryer has a bale support platform disposed between a lower and an upper plenum chamber, and the upper plenum chamber is spaced from the support platform to define an accessible stacking area for disposing one or more layers of forage bales onto the support platform. An air circulating passage is connected to the plenum chambers to direct a drying air flow there across. A sheet of flexible film material is disposed about the stack of bales and between the plenum chambers, whereby upon the application of a drying air flow, a negative pressure causes the flexible film material to collapse against the circumferential side surface of the stack of bales, whereby the drying air flow is confined through the stack. The drying air flow is also reversible by proper synchronization of valve plates in the air circulating conduits.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: January 24, 2006
    Assignee: Agriculture & Agro-Food Canada
    Inventors: Savoie Philippe, DescĂ´teaux SĂ©bastien
  • Patent number: 6944967
    Abstract: An air dryer and process employs a jet engine for producing high quality dried products. A turbofan jet engine in an air-drying system uses both thermal and non-thermal air-drying. The turbofan jet engine is housed within an air distribution chamber for directing exhaust air and bypass air from the jet engine into a product drying tube, where it is dried through a combination of thermal drying from heat content in an engine exhaust, and by the kinetic energy of air flowing past the product traveling through the drying tube, that may include a physical impediment for retarding retard the speed of the product solids flowing in the air stream through the tube.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: September 20, 2005
    Inventor: Wesley A. Staples
  • Patent number: 6591516
    Abstract: A hair dryer including a main body, a centrifugal fan, at least one air inlet and at least one inlet guide. The main body has an air outlet. The centrifugal fan is provided in the main body and configured to blow air toward the air outlet. The centrifugal fan has an intake side and an outer circumferential surface around a central axis of the centrifugal fan. The at least one air inlet is formed in the main body to face the intake side of the centrifugal fan. The at least one inlet guide is provided to project from an inside surface of the main body and extends along a circumference of the at least one air inlet to surround and face a part of the outer circumferential surface of the centrifugal fan along a circumference of the centrifugal fan.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: July 15, 2003
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Kenji Kamada, Yuji Yamane, Kazunori Nakasai, Kouji Asakawa
  • Patent number: 6393719
    Abstract: A process and an apparatus for removing water from a fibrous web are disclosed. The process comprises providing a fibrous web having a moisture content from about 1% to about 99%; providing an oscillatory flow-reversing impingement gas having a pre-determined frequency; providing a gas-distributing system comprising at least one discharge outlet designed to emit the oscillatory flow-reversing impingement gas onto the web; and impinging the oscillatory flow-reversing gas onto the web through the plurality of discharge outlets, thereby removing moisture from the web. The apparatus comprises a web support designed to receive a fibrous web thereon and to carry it in a machine direction; at least one rotary valve pulse generator designed to produce oscillatory flow-reversing air or gas; and at least one gas-distributing system in fluid communication with the pulse generator for delivering the oscillatory flow-reversing air or gas to the web.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: May 28, 2002
    Assignee: The Procter & Gamble Company
    Inventor: Gordon Keith Stipp
  • Patent number: 6085437
    Abstract: A process and an apparatus for removing water from a fibrous web are disclosed. The process comprises providing a fibrous web having a moisture content from about 10% to about 90%; providing an oscillatory flow-reversing impingement gas having frequency of from 15 Hz to 1500 Hz; providing a gas-distributing system comprising a plurality of discharge outlets designed to emit the oscillatory flow-reversing impingement gas onto the web; and impinging the oscillatory flow-reversing gas onto the web through the plurality of discharge outlets, thereby removing moisture from the web. The apparatus comprises a web support designed to receive a fibrous web thereon and to carry it in a machine direction; at least one pulse generator designed to produce oscillatory flow-reversing air or gas; and at least one gas-distributing system in fluid communication with the pulse generator for delivering the oscillatory flow-reversing air or gas to the web.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: July 11, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Gordon Keith Stipp
  • Patent number: 6054686
    Abstract: An oven for warming food, which includesa carcass (2) delimiting a warming chamber;a rack (8) provided with two opposed perforated sidewalls (12) and placed inside of the carcass (2) so as to create first and second lateral spaces (13A, 13B);a blower unit (14) mounted on the back wall (7) of the carcass (2);unit (15) for guiding the air blown by the blower unit (14).The unit (15) for guiding the air blown by the blower unit (14) and heated directs the air only toward the first lateral space (13A). The blower unit (14) draws the air from the second lateral space (13B).
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: April 25, 2000
    Assignee: Sogerma
    Inventors: Alexis Pauly, Jean-Michel Lequertier, Philippe Braconnier
  • Patent number: 6000145
    Abstract: A method for the continuous treatment of particulate material, such as cement raw meal, in an apparatus comprising a stationary reactor (6) configured as a conical spouted bed, to which the material is fed and treated in a suspended bed by means of gas which, via a centrally arranged gas inlet (21), is injected at the bottom of the reactor (6) and flows upwards through the reactor (6), and wherefrom the material is discharged via an opening (21) at the bottom of the reactor (6).
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: December 14, 1999
    Assignee: F. L. Smidth & Co. A/S
    Inventor: Jorn Touborg
  • Patent number: 5937539
    Abstract: A dual-purpose combustor for ordinary combustion and pulse combustion especially suited to be installed for a spray dryer, which is used not only as an ordinary combustion gas generator but also as a pulse combustion gas generator capable of generating high frequency sound waves and hot blast in large capacity to enhance the drying efficiency. The dual-purpose combustor is composed essentially of successionally connected chambers: a concentric narrow ring form fuel/combustion air mixed gas supply slit, a concentric wider ring form combustion chamber having an ignition means and a narrow outlet portion, a concentric narrow ring form exhaust gas chamber, a concentric wider ring form upper secondary combustion chamber, and a concentric cylindrical form lower secondary combustion chamber having the same diameter with the outer diameter of the concentric ring form upper secondary combustion chamber.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: August 17, 1999
    Assignee: Powdering Japan K.K.
    Inventor: Masashi Takahashi
  • Patent number: 5842289
    Abstract: The present invention is directed to drying and heating processes and to an apparatus incorporating a pulse combustion device that can be used in a drying system or in a heating system. In general, the apparatus includes a pulse combustion device for the combustion of a fuel to produce a pulsating flow of combustion products and an acoustic pressure wave. The pulse combustion device has a combustion chamber connected to at least one resonance tube. A resonance chamber surrounds at least a portion of the pulse combustion device and includes a nozzle downstream from the resonance tube. The nozzle accelerates the combustion products flowing therethrough and creates a pulsating velocity head. In a drying system, the nozzle exits into a drying chamber where the combustion products contact a feed stream.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: December 1, 1998
    Assignee: Manufacturing and Technology Conversion International, Inc.
    Inventors: Ravi Chandran, Momtaz N. Mansour
  • Patent number: 5775003
    Abstract: A dry kiln for wood products that has sample tunnels mounted strategic to each of the charges (stacks) of wood products that are to be dried. A board sample is mounted in the tunnel that is representative of the charges to be dried. A sensing device mounted in the tunnel and supporting the board sample continuously monitors the weight of the board sample and inputs the information to a controller. The moisture content of the board sample at any time during the cycle is ascertained by weight. The board sample in the tunnel is subjected to the same drying conditions as the charge and therefore the moisture content of the charge will be the same as the board sample. The continuous weight monitoring of the board sample is accordingly used by the controller to control the dry cycle.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: July 7, 1998
    Assignee: U.S. Natural Resources, Inc.
    Inventor: Thomas E. Goodwin, III
  • Patent number: 5596817
    Abstract: In a drying or cooling chamber (1) having a mainly cylindrical upper section (2) joining an underlying mainly conical or frusto-conical lower section (3), an inlet (6) for processing gas is provided at the upper end of the cylindrical section (2) and an outlet (7) for the processing gas at the lower or upper end of the chamber. Deposition of products on the inner surfaces of the chamber is minimized by injection by nozzle means (8) of at least one jet of pressurized gas at a high flow velocity but a low flow rate compared to the flow velocity and the flow rate of the processing gas at a level of the cylindrical section (2) remote from the processing gas outlet (7) and at a point close to a circumferential wall (9) of the cylindrical section (2).
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: January 28, 1997
    Assignee: Niro Holding A/S
    Inventor: Ove E. Hansen
  • Patent number: 5551165
    Abstract: Methods are providing for cleansing contaminants from substrates, such as semiconductor wafer handling implements, and thereby reduce the incidence of contamination of semiconductor devices being assembled upon the semiconductor wafers. In one aspect of the invention, a substrate such as a semiconductor cassette or other semiconductor wafer handling implement, is inserted into a chamber that is substantially isolated from a surrounding environment. A pressurized, and optionally purified, cleansing medium is directed against at least one surface of the substrate to dislodge contaminants from the substrate surface. Dislodged contaminants are evacuated with negative pressure from the chamber. In a preferred aspect of the invention, the cleansing medium is an inert gas, such as nitrogen, and is applied to the substrate at a pressure from about 10 p.s.i. to about 100 or more p.s.i.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: September 3, 1996
    Assignee: Texas Instruments Incorporated
    Inventors: Virgil Q. Turner, William D. Light, Hilario T. Trevino, Richard L. Guldi, Frank Poag, Douglas E. Paradis
  • Patent number: 5526583
    Abstract: The present invention provides a portable dry kiln for drying or treating lumber. The kiln can operate with an electrical generator and a gas, oil or waste burning heater to allow use in remote areas. The kiln is small enough to be readily transportable while improving thermal efficiency, humidity control, and eliminating fan motor maintenance problems. A cyclonic circulation of air extending through the kiln chamber is produced by the combined actions of an air supply system and a plurality of fans.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: June 18, 1996
    Inventors: Dwayne E. Hull, Joseph B. Sandbothe
  • Patent number: 5522159
    Abstract: A drying shed includes at least one drying chamber (2) for accommodating wood (3) to be dried in a known manner, and further includes a drying unit arranged in the drying chamber and comprising a heat-exchange battery (6) and fans (4). The invention is characterized in that respective fan wheels or impellers are intended to be driven by a hydraulic motor. The hydraulic motor may be a reversible motor.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: June 4, 1996
    Assignee: Utec Sm AB
    Inventor: Kjell Lundberg
  • Patent number: 5293700
    Abstract: A system for drying a large quantity of wood efficiently, which includes: a wood drying room capable of being sealed; a combustion-gas generator provided with an air-inlet conduit for introducing fresh air for combustion use into a combustion chamber provided in a lower area of the combustion-gas generator; a combustion-gas supplying passage extending from an upper area of the combustion-gas generator to an upper area of the wood drying room; an exhaust-gas discharging conduit extending from a bottom area of the wood drying room to a chimney; a combustion-gas recovery conduit extending from the bottom area of the wood drying room to the combustion-gas generator; and a gas flow-rate control unit provided in at least one of the exhaust-gas discharging conduit and the combustion-gas recovery conduit.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: March 15, 1994
    Inventor: Sachio Ishii
  • Patent number: 5276980
    Abstract: A direct-fired kiln for drying lumber having a reversible powered air-mover mechanism for producing air circulation within the interior of the kiln in either of opposite directions. Selectively controlled air withdrawal conduits returning air to a fuel burner outside the kiln are adjusted so that air is always withdrawn from the side of a load within the kiln where circulated air is exiting from the load.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: January 11, 1994
    Inventors: John L. Carter, Michael M. Sprague
  • Patent number: 5274892
    Abstract: A device for the continuous and tension free treatment of textile sheets is provided. The device comprises an air-permeable endlessly circulating material web bearing surface; an upper stationary and air permeable delimiting wall, the material web bearing surface and the delimiting wall defining a transport channel; at least one upper blower nozzle, the blower nozzle orientated downwardly and running transversely with respect to the direction of the material web bearing surface; at least one lower blower nozzle arranged in a direction in which the material web is moved the lower nozzle offset with respect to said upper blower nozzle; and the upper and lower blower nozzles arranged with respect to each other to very abruptly alternate the movement of the material web, up and down and to contactlessly support the material web above the material web bearing surface while in the transport channel. Additionally, a method of treating the textile sheets is also provided.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: January 4, 1994
    Assignee: Solipat AG
    Inventor: Christian Strahm
  • Patent number: 5269076
    Abstract: A balanced draft vent system for a lumber kiln is shown and described wherein external and internal air pressure differential is taken into account in conjunction with internal humidity measurement in providing a balanced volumetric exchange of cool moisture laden air exiting the kiln and ambient air introduced into the kiln. The air exchange function of the balanced draft vent system operates independent of the driving forces of air circulation within the kiln.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: December 14, 1993
    Assignee: U.S. Natural Resources, Inc.
    Inventor: Leon Breckenridge
  • Patent number: 5226244
    Abstract: A drier which has a reversible power operated air mover for circulating air through multiple loads in either of opposite directions. An exhaust duct means is provided for removing moisture-laden air in a region between the loads, and a dilution air means is provided for introducing dilution air into this region. Means is provided for heating the dilution air introduced. The means for introducing air and with drawing air and for heating the air have the same operating characteristics irrespective of the direction of air movement.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: July 13, 1993
    Inventors: John L. Carter, Michael M. Sprague
  • Patent number: 5209821
    Abstract: Apparatus are set forth for particularly dehydrating products such as corn syrups, fruit and vegetable extracts, dairy products, or other temperature-sensitive or hard-to-handle products. The apparatus include using a pulse combustor to generate a hot, turbulent, gaseous environment in a dehydration chamber and spraying the feedstock into the chamber. As the feedstock droplets travel through the chamber, they are dehydrated and thereafter collected by suitable devices. Temperature and feedstock residence time in the chamber are controlled to prevent product degradation. Where the dehydrated product is hygroscopic, processing aids may be added to control hygroscopicity.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: May 11, 1993
    Assignees: Purdue Research Foundation, JSDC, Ltd.
    Inventors: Alexander J. Shaw, Jay S. Marks, Hayes E. Gahagan
  • Patent number: 5197201
    Abstract: The invention relates to a process for drying timber in which the timber is fed gradually through a drying tunnel while at the same time being permeated by a drying air with a temperature below 80.degree. C. transported primarily in the longitudinal direction of the tunnel. Said drying tunnel is divided into two separate sections with said drying air divided into two circulating substreams, of which one flows through the first section of the tunnel in the direction of motion of the timber and the other through the second section of the tunnel contrary to the direction of motion of the timber, after which said substreams are conditioned and returned to their section.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: March 30, 1993
    Assignee: Ekono Oy
    Inventor: Jarl-Gunnar Salin
  • Patent number: 5195251
    Abstract: A kiln and method for drying material. The kiln includes a drying chamber, a heating system for heating air to be delivered to the drying chamber, and a ducting system for delivering heated air to the drying chamber. Fans are provided for establishing a low air pressure region and a high air pressure region adjacent the ducting system in order to generate a circulation flow of air throughout the drying chamber. The ducting system is arranged to deliver heated air only into the low air pressure region of the fan to ensure proper mixing of the heated air from the ducting and recirculated air. In a second embodiment, the fans are reversible to permit air flow through the drying chamber to be reversed.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: March 23, 1993
    Inventors: Frank T. Gyurcsek, Martin G. Gyurcsek
  • Patent number: 5136793
    Abstract: A heat recovery system is disclosed for a pulse combustion drying system in which the exhaust gas of combustion from a pulse combustor passes successively through a dryer, a product collector and a scrubber. The heat of the exhaust gas is recovered in the scrubber by spraying with water or other liquid and transferring by heat exchange the heat absorbed by the water to compressed air, and passing the heated compressed air successively through a membrane heat exchange tube on the wall of the product collector and a membrane heat exchange tube on the wall of the dryer. The air is discharged finally in an air-injection nozzle of the pulse combustor.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: August 11, 1992
    Assignee: Osaka Fuji Kogyo Kabushiki Kaisha
    Inventor: Atsuyoshi Kubotani
  • Patent number: 5123177
    Abstract: In a wood curing kiln, a chamber is sealed to retain a negative pressure with respect to the ambient and for storing stacked lumber to be cured and having a concrete floor with embedded heating pipes for circulating heated water to heat the concrete floor to a temperature preventing condensation thereon, and with means for circulating heated air within the chamber and through the stacked lumber to remove moisture therefrom and with the chamber being constantly vented to remove moist air and maintain the negative pressure within the chamber. A tarp is suspended from the ceiling of the chamber above the stacked lumber to enable the tarp to be lowered to cover and seal the top of the stacked lumber so that the heated air flows across the top of the tarp and down into and through an end of the stacked lumber.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: June 23, 1992
    Assignee: Forestor-Koetter
    Inventors: Thomas C. Koetter, Richard A. Koetter
  • Patent number: 5107607
    Abstract: A kiln for drying material such as lumber. A primary centrally located support structure supporting a roof which extends outwardly to opposite sides of the support structure. The support structure is hollow, and an air-circulating system uses this hollowness as a passage for circulating air.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: April 28, 1992
    Inventor: Howard C. Mason
  • Patent number: 4974341
    Abstract: An apparatus for the dry treatment of a fabric in which the fabric passes repeatedly from a first chamber to a second chamber and back again through a passage in which air is blown in the appropriate direction. Within each chamber facing the port of the passage, there is a fabric receiving device which allows the air therethrough and receives the fabric without retaining it, whereby the fabric is piled in orderly fashion on a platform of the corresponding chamber. The device avoids irregular piling and entanglement of the fabric in the lengthwise direction. Adjustment of the control means of access of the air to the passage opposes a main current to a secondary current of air, producing compacting of the fabric.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: December 4, 1990
    Assignee: Jaume Anglada Vinas S.A.
    Inventor: Jaime A. Vinas
  • Patent number: 4955146
    Abstract: An improved kiln for seasoning lumber. The kiln includes an air treatment and circulating assembly adjacent the top wall. The air treatment and circulating assembly includes a series of fan assemblies for circulating air to the lumber stacked within said chamber and means for heating air within said chamber. An exhaust venting system located on the downstream side of the airflow from the lumber stack and on the upstream side of the air treatment and circulating assembly is operable to exhaust moisture-ladened wet air prior to the air passing through the air treatment and circulating system. The kiln also includes an intake air vent located downstream of the air flow from the air treatment and circulating assembly and upstream of the stacked lumber which adds additional outside air to make up that portion of air which is exhausted through the exhaust venting system.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: September 11, 1990
    Assignee: Boldesigns, Inc.
    Inventor: Howard E. Bollinger
  • Patent number: 4941820
    Abstract: A pulse combustion energy system including a pulse combustor coupled to a processing tube for flowing material to be processed therethrough, the processing tube being coupled to a pair of cyclone collectors for receiving the material flowing therefrom. An optional recycling section is coupled to the cyclone collectors for flowing vapor from the cyclone collectors back to the upstream end of the processing tube. The pulse combustor includes a rotary valve, a combustion chamber, an inner tail pipe and an outer tail pipe. The combustion chamber and inner tail pipe are conical and tubular sections mounted in longitudinal compression, and the compressive forces are transmitted externally across the junction of the combustion chamber and tail pipe by a strongback assembly. The rotary valve includes first, second, and third closely adjacent cylinders defining an interior air chamber. The cylinders have radially oriented, substantially aligned apertures which define an air intake.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 17, 1990
    Assignee: NEA Technologies, Inc.
    Inventor: Hanford N. Lockwood, Jr.
  • Patent number: 4922624
    Abstract: Lumber is dried in a kiln by controlling the temperature and humidity of air within the kiln during a first cycle, followed by a second cycle allowing humidity to equalize between the coarse and dense lumber in the kiln without adding further energy. Air recirculates across the lumber in the kilm, and the drop in dry bulb air temperature across the lumber indicates the dryness of the lumber. The air temperature within the kiln is maintained at a predetermined setpoint, but no attempt is made to control the temperature drop across the lumber. Upon reaching a predetermined temperature drop across the lumber, corresponding to a relatively high amount of moisture in the kiln, no further energy is supplied to the kiln and air recirculation continues for a time to allow equalization of moisture in all lumber within the kiln. The process yields a desired uniform amount of moisture in the lumber while avoiding overdrying of the relatively coarse lumber in the kiln.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: May 8, 1990
    Inventor: John M. Tharpe
  • Patent number: 4918837
    Abstract: A device for producing a continuous stream of dried gas supplied to a dryer for drying-up a particulate plastics material comprises a number of blowers and a number of adsorbent means-containing containers connected to heating arrangements which are inserted in the conduits leading to the drier. Each blower is immediately connected to an assigned adsorbent means-container and is switchable to operate for conveying dried-up gas and for regenerating adsorbent means in the container.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: April 24, 1990
    Inventor: Roderich W. Graff
  • Patent number: 4916832
    Abstract: Device for reversing an air flow in a drying chamber in which the air flow is created by at least one blower. A drum, rotatable about its longitudinal shaft is arranged about the blower or blowers. The drum has apertures on its casing surface to provide an air flow through the drum. The drum extends from the floor of the drying chamber to its roof, or is sealed in another way at its ends. By rotating the drum about its longitudinal shaft between two different positions, a reversal of the direction of the air flow in the drying chamber is achieved in a very simple way, although the blower is stationary and drives the air continuously in the same direction. A heat battery is arranged on the intake side of the blower.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: April 17, 1990
    Assignee: Utec S.M. AB
    Inventor: Gustav Forssen
  • Patent number: 4892083
    Abstract: A baking oven has a baking chamber (2) which is at both of its sides separated from air channels (12) by partitions (11) being provided with air passage openings (30). The air channels (12) are connected to air supply channels (24) which are supplied with warm air by a blower (14) via a switching equipment (25) being centrally arranged relative to the cover wall (10) of the baking chamber (2), said switching equipment having preferably the shape of a flap (27) being swivellable around a horizontal axis. On account thereof, the baking chamber (2) is uniformly supplied with warm air which flows through the baking chamber (2) in horizontal and alternating direction (FIG. 1).
    Type: Grant
    Filed: October 18, 1988
    Date of Patent: January 9, 1990
    Inventor: Helmut Konig
  • Patent number: 4866858
    Abstract: In a process for fluidizing a bed of particles by passing a gas continuously through the bed, the improvement comprising dividing the bed into at least two sections, and introducing the gas sequentially into each section, one section at a time, the flow of gas and the sequence being at a rate sufficient to maintain the entire bed of particles in a fluidized state.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: September 19, 1989
    Assignee: Union Carbide Corporation
    Inventor: Mark A. Delano
  • Patent number: 4862599
    Abstract: Drying stacked cut wood in a drying chamber is accomplished by conducting air between the layers of cut wood. Before and/or during the drying, the air velocity profile in the plane of admission into the stack is adjusted to a modifiable theoretical value. The drying apparatus has at least two measuring sensors for the wood moisture level and/or the flow velocity of the air. The sensors are arranged at some distance from each other in the area of the stack. A flow control system is adjustable dependent upon the measured values obtained by the measuring sensors.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: September 5, 1989
    Assignee: Gesellschaft Fur Messtechnik mbH
    Inventor: Reinhard Brunner
  • Patent number: 4817300
    Abstract: An apparatus for uniformly subjecting a flow-traversable heatable material, in particular a stack of plates, rods, tubes, pipes, or the like, to a fluid flow comprises a radial-flow fan which serves as flow drive and which is disposed above the plane of flaps which depending on the desired flow direction can be respectively opened or closed. The radial-flow fan comprises a spiral housing discharging on at least two sides, and the volume flow emerging from the discharge openings of said spiral housing is supplied alternately from the one side or from the other side to the heatable material simply by actuating the flaps.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: April 4, 1989
    Assignee: Degussa Aktiengesellschaft
    Inventors: Carl Kramer, Reinhard Grundmann
  • Patent number: RE34784
    Abstract: An apparatus for the dry treatment of a fabric in which an open width fabric is caused to move alternately between an inlet pile and an outlet pile through a duct in which there are currents of air of an appropriate temperature causing the said alternate movements. The fabric is supplied gradually to the inlet pile and is gradually withdrawn from the outlet pile. The apparatus comprises chambers for the said piles and blower and heating means for the air currents.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: November 15, 1994
    Inventor: Jaime A. Vinas