Hollow Strirrer Or Scraper Patents (Class 165/92)
  • Patent number: 10041701
    Abstract: Embodiments disclosed herein relate to devices, systems, and methods for cooling and/or heating a medium as well as cooling and/or heating an environment containing the medium. More specifically, at least one embodiment includes a heat pump that may heat and/or cool a medium and, in some instances, may transfer heat from one location to another location.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: August 7, 2018
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Jeffrey P. Koplow, Harumichi Arthur Kariya, Wayne Lawrence Staats, Jr.
  • Patent number: 9757700
    Abstract: A stirrer (1; 100) for stabilizing liquid binding unfinished products intended to form ceramic items comprising a support shaft (2) individuating a longitudinal rotation axis (Y) and contained into a mixing tank (V) of the liquid binding unfinished product, motorization means (3) operatively connected with the support shaft (2) in order to rotate it around the longitudinal axis (Y), and a main operating blade (4), coupled with the support shaft (2) through interconnection means (5) in such a way as to be contained into the mixing tank (V) in order to interfere with the liquid binding unfinished product and cause its continuous mechanical mixing action inside the mixing tank (V) itself when the support shaft (2) rotates around the longitudinal axis (Y).
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: September 12, 2017
    Assignee: CER GROUP S.R.L.
    Inventors: Andrea Pozzan, Leonardo Pozzan, Pietro Posenato
  • Patent number: 9295956
    Abstract: An agitator assembly for use with mixers is provided. This agitator assembly includes an agitator shaft adapted to receive a flow of liquid coolant therethrough; a first hub assembly mounted on the agitator shaft; a second hub assembly mounted on the agitator shaft; at least one agitator bar connecting the first hub extension to the second hub extension, wherein the agitator bar further includes a conduit for delivering liquid coolant from the first hub extension to the second hub extension; and at least one agitator bar connecting the second hub extension to the first hub extension, wherein the agitator bar further includes a conduit for returning liquid coolant from the second hub extension to the first hub extension.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: March 29, 2016
    Assignee: Shaffer Manufacturing Corporation
    Inventor: Michael W. Hall
  • Patent number: 9004152
    Abstract: A heat exchange device for powdery and granular materials configured to reduce adherence and accumulation of the materials and manufacturing time. The heat exchange device includes at least one substantially hollow disk-shaped heat exchanger among a plurality of heat exchangers that is disposed on the shaft about which the heat exchanger rotates. The hollow disc-shape heat exchanger includes a cutout recess part, plate surfaces extending from one side edge of the cutout recess part and forming a wedge-shaped plate surface, and a smoothly bulging projection formed at a central part of the heat exchanger. In addition, an opening is provided in the hollow disk-shaped heat exchanger at a tip end of the projection, and a shaft is inserted into the opening and joined to the hollow disc-shaped heat exchanger.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: April 14, 2015
    Assignee: Nara Machinery Co., Ltd.
    Inventor: Ichiro Yoshihara
  • Patent number: 8813833
    Abstract: To provide a heat exchanging device for powder, which is capable of suppressing as much as possible the compression force applied to an object to be processed and reducing the manufacturing man-hour (time), while ensuring the piston flowability of the object to be processed. In order to achieve this object, the present invention is a heat exchanging device for powder, which is configured such that a shaft 13 is rotatably supported within a horizontally long casing 1, that a plurality of heat exchangers 30 are disposed at predetermined intervals on the shaft, and that a heat exchanging medium is supplied into the heat exchangers via the shaft, wherein the heat exchangers 30 are formed as substantially hollow disk-shaped heat exchangers each having a notched recess 31 directed to a center from a circumferential edge.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: August 26, 2014
    Assignee: Nara Machinery Co., Ltd.
    Inventor: Yorioki Nara
  • Patent number: 8211371
    Abstract: A device for heat transfer, particularly in fluidized bed equipment. Several layers of heat exchanger tubes are provided, with radial arms mounted in between to mix and loosen the product. In addition, a process is disclosed for heat transfer in high-temperature processes for bulk material, particularly granulates or powders, in fluidized bed units, where the heat is transferred to and absorbed by the fluidized bed on several levels, and by the fluidized bulk material being agitated mechanically between these levels. This allows transfer of high energy densities without the risk of bridging or local overheating.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: July 3, 2012
    Assignee: Andritz Technology and Asset Management GmbH
    Inventors: Klaus Stanke, Mathias von Lewinski, Paul Kröhl
  • Patent number: 7540651
    Abstract: An agitator able to mix and disperse a variety of fluids of various fluid volumes with different viscosities ranging from low to high, and having excellent, cleanability and improved cooling efficiency is provided. The agitator comprises a rotating shaft 3 extending vertically inside an agitating vessel 2, and a flat paddle blade 4 mounted on the rotating shaft 3. The flat paddle blade has a bottom flat paddle blade portion 4a extending outwards from the bottom of the rotating shaft 3 and a rectangular upper flat paddle blade portion 4b extending upward from an upper part of each side end of the bottom flat paddle blade portion 4a. The dimensional ratio (b/a) of the blade diameter (b) of the bottom flat paddle blade portion 4a to the inner diameter (a) of the agitating vessel 2 is from 0.6 to 0.9, and the dimensional ratio (d/c) of the height (d) of an upper flat paddle blade portion 4b to the height (c) of the bottom flat paddle blade portion 4a is from 1 to 4.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: June 2, 2009
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Hiroyuki Matsumoto, Mutsuo Kuramoto, Masahiko Hiraki
  • Publication number: 20090084523
    Abstract: A vertical self-supporting heat exchanger for cooling or heating viscous liquids, especially for a sugar industry product known as massecuite, that has fixed and reciprocating vertical cooling or heating elements with attached scrapers or wipers that wipe the external surfaces of the elements to improve the heat transfer of the heat exchanger. The vertical reciprocating elements can be slowly moved through the viscous material by means of a hydraulic ram. The heat exchanger may have more than one pass if required.
    Type: Application
    Filed: September 14, 2007
    Publication date: April 2, 2009
    Inventor: James Moir Cargill
  • Patent number: 7511101
    Abstract: A plug flow reactor having an inner shell 27 surrounded by outer shell 21 and having at least one annular flow passage 35 therebetween can be used to prepare compositions, including polymers. The plug flow reactor also includes inlet port 36, an outlet port 37 and a plurality of exchanger tubes 26 wherein the exchanger tubes are in fluid communication to the at least one annular flow passage. Polystyrene and high impact polystyrene can be prepared using the reactor.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: March 31, 2009
    Assignee: Fina Technology, Inc.
    Inventors: Thanh T. Nguyen, Jay L. Reimers
  • Patent number: 7281384
    Abstract: Birds are moved through chilled water by bird moving means such as an auger or by a series of paddles. The birds tend to accumulate in a predetermined path in the water. Streams of water that include an antibacterial additive are directed toward the predetermined path and engage and disperse the birds, and wash the birds with the streams of water and the antibacterial additive, thereby increasing the rate of heat transfer from the birds and increasing the effectiveness of the antibacterial properties of the agents in the chilled water.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: October 16, 2007
    Assignee: Morris & Associates, Inc.
    Inventors: William F. Morris, III, Terry A. Wright, John P. Shell, Robert E. Cathey
  • Patent number: 7207376
    Abstract: A heat exchanger for viscous fluids includes a pair of frustum-shaped bodies (1) and (2) providing the heat-transmitting surfaces. The outer body is confined by gate-flanges (3) and (4) through which is inserted a bearing-and-seal housing (5). The inner body has a hollow center shaft (6) extending through the housing (5). The inner and outer bodies have one or more surface grooves (7). The outer body includes a jacket chamber (8) for a secondary, heat transfer fluid. The inner body is hollow, with channels to improve heat transfer, and the secondary fluid enters and exits through the hollow shaft (6). The angular movement of the inner body is also transferred through the shaft from an outside lever (9). The width of the grooves may exceed that of the scraper, allowing for relative radial movement of the scraper inside the groove. An axial force can be applied to increase the surface pressure of the scrapers.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: April 24, 2007
    Assignee: Delta Process Engineering APS
    Inventor: Einar Dyhr
  • Patent number: 6938435
    Abstract: The invention relates to a method of producing a plurality of portions of a precooked food wherein the food is initially cooked at temperatures above 80° C. and prepared, the food is then cooled in a cooling phase within a maximum time of 120 min passing through the temperature range of 55° C. to 8° C. to a final temperature in the range of 8° C. to 0° C., and stored for a few days at the final temperature. The food is poured into an agitator vessel (22) during the cooling phase wherein the food is simultaneously thoroughly mixed and cooled during the cooling phase by an agitator (01, 26) constructed as a heat exchanger according to the invention.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: September 6, 2005
    Assignee: Metos Oy Ab
    Inventors: Hubert Goseling, Paul Kienzle
  • Publication number: 20040035556
    Abstract: A heat-dissipating device includes a hollow housing adapted to contact a heat source and for receiving a heat-conducting fluid therein, a heat-conducting member contacting the heat-conducting fluid, and a heat-dissipating fin unit driven to move within an ambient fluid so as to dissipate heat from the fin unit to the ambient fluid.
    Type: Application
    Filed: July 8, 2003
    Publication date: February 26, 2004
    Inventor: Amigo Jean
  • Publication number: 20030213585
    Abstract: An improved heat exchange system and methodology, and an improved material treatment system and methodology, based on that heat exchange system, for providing improved pasteurized and sterilized packaged food products is disclosed. Improved pasteurized and sterilized packaged food products produced thereby are also disclosed.
    Type: Application
    Filed: March 20, 2003
    Publication date: November 20, 2003
    Inventor: David Reznik
  • Patent number: 6158237
    Abstract: Heat transfer apparatus comprises a refrigeration assembly having a low pressure region and a high pressure region. The apparatus may also include a power generation assembly connected to the refrigeration assembly between the low and high pressure regions. The refrigeration assembly and the power generation assembly are so arranged that refrigerant in the high pressure region can be passed through the power generation assembly to the low pressure region of the refrigeration assembly. Power may be generated by the power generation assembly on passage therethrough of the refrigerant. The apparatus may also include an absorption region comprising a piston and cylinder, ejector cycles in combination with absorption cycles, fibre heat exchanges, vortex tubes, and one embodiment comprises lamp or a torch.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: December 12, 2000
    Assignee: The University of Nottingham
    Inventors: Saffa Bashir Riffat, Ian William Eames
  • Patent number: 6061924
    Abstract: A dehydrating apparatus includes a chamber for receiving wet material to be dehydrated. A rotatably-mounted agitator is provided with the chamber. The agitator is adapted to agitate material in the chamber when the agitator rotates in a first direction and convey the material out of the chamber when the agitator rotates in the other, second direction.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: May 16, 2000
    Assignee: Rubicon Development Co. L.L.C.
    Inventors: Danny R. Bolton, David L. Bigham
  • Patent number: 6062297
    Abstract: A honeycomb regenerator for receiving a waste heat in an exhaust gas by passing an exhaust gas and a gas to be heated alternately therethrough, which is constructed by stacking a plurality of honeycomb structural bodies, is disclosed. In the honeycomb regenerator according to the invention, cell open rates of the honeycomb structural bodies positioned at an inlet portion of the exhaust gas and at an inlet portion of the gas to be heated are larger than those of the honeycomb structural bodies positioned at a center portion.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: May 16, 2000
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshiyuki Kasai, Kazuhiko Umehara, Wataru Kotani
  • Patent number: 5992504
    Abstract: A honeycomb regenerator for recovering waste heat from exhaust gas, comprises a stacked assembly including at least one first honeycomb body and at least one second honeycomb body stacked thereon, the first honeycomb body being formed of an anti-corrosive material, and the at least one second honeycomb body being formed of a material having a main phase of cordierite. The stacked assembly has an inlet for hot gas and an inlet for cold gas, such that the cold gas flows along a direction opposite the hot gas. Further, the at least one second honeycomb body is provided downstream of the at least one first honeycomb body along a gas flow direction of the hot gas. Accordingly, the at least one first honeycomb body receives the hot gas during flow thereof, while the at least one second honeycomb body receives the cold gas during flow thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 30, 1999
    Assignee: NGK Insulators, Ltd.
    Inventors: Kazuhiko Kumazawa, Wataru Kotani, Masaomi Kamiya
  • Patent number: 5964278
    Abstract: A heat exchanger has been developed with a helical insert (9) permanently mounted in a housing (2). Between the windings in the insert (9) there is formed a helical channel (20) for one heat exchange medium. The insert (9) is designed with a channel (10) for the second heat exchange medium. The heat exchanger is designed with a central tube (13) which is axially movable and rotatable. The central tube (13) is designed with scraper elements for removal of deposits in the channel (20). In one embodiment the scraper element is formed by a helical insert (15) of the same design as the insert (9). The insert (15) is designed with a channel (16) for the second heat exchange medium. In a further embodiment the central tube (13) is designed with one or more scraper arms (23) which may be liquid-cooled. Deposits are often formed on the heat transfer surfaces.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: October 12, 1999
    Assignee: Kvaerner Engineering a.s
    Inventors: Jostein Langoy, Nils Myklebust, Nils I. Viken, deceased, Steiner Lynum, Alfhild Irene Fagervik
  • Patent number: 5924477
    Abstract: A hexagonal refractory brick is constructed with tapered sides so it can be stacked 3-on-1 and 1-on-3, the bottom surface of the brick fitting between projections on the top surfaces of three others. A central vertical channel in the brick is complemented by other vertical channels formed by the assembly of a plurality of bricks, and horizontal channels which are relatively wide at the bottom.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: July 20, 1999
    Inventor: Tatar Doru
  • Patent number: 5755569
    Abstract: A regenerative thermal oxidizer is provided with a combustion chamber and a plurality of heat transfer columns. Heat transfer media within the columns include solid surfaces which define vapor flow passages. To permit higher volumetric vapor flow rates nearer the combustion chamber, the passages are larger in cross-sectional area and the solid surfaces have less total surface area in those portions of the heat transfer media nearer the combustion chamber than in those portions away from the combustion chamber. The larger cross-sectional area of the passages and reduced area of the solid surfaces decreases the resistance to vapor flow and allows the passages to accommodate the higher volumetric flow rate of the vapor stream passing through the hotter portions of the heat transfer media.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: May 26, 1998
    Assignee: Koch Engineering Company, Inc.
    Inventors: Lawrence D. Berg, Christopher R. Harmon, Richard L. Shilling, Neil Yeoman
  • Patent number: 5701747
    Abstract: A system for automatically rapidly chilling liquids and semisolids which includes a frame which supports a drive motor which contains a substantially vertical drive shaft having a connecting member at one end. A sealed, hollow chilling utensil which contains a refrigerant, and which has a neck portion which contains a connecting member which is adapted for fixed engagement with the connecting member of the drive shaft.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: December 30, 1997
    Assignee: Syracuse University
    Inventors: Norman A. Faiola, Christopher J. Crase
  • Patent number: 5673748
    Abstract: A heating chamber is rotatable about its longitudinal axis and contains a number of heating tubes orientated parallel to each other. Solid material which is lifted up during the rotation can become detached from the heating tubes and upon impact can lead to damage to heating tubes which are situated below. In order to prevent such an occurrence, baffle shells are provided on the heating tubes. The baffle shells are formed of a resistant material and offer protection against surface damage. The heating tubes are preferably disposed in radially orientated rows.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: October 7, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventors: Karl May, Hartmut Herm, Karlheinz Unverzagt, Helmut Werdinig
  • Patent number: 5634313
    Abstract: The invention relates to a cylindrical, refractory, hollow brick having tapered wall surfaces in the corner region.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: June 3, 1997
    Assignee: Veitsch-Radex Aktiengesellschaft fur Feuerfeste Erzeugnisse
    Inventor: Gerd Mogling
  • Patent number: 5575160
    Abstract: A freeze crystallization concentration system is disclosed for separating a liquid feed stream into a more purified liquid and a concentrate in which only a single pass through a freeze-crystallizer and ice separator is required. The crystallizer, which converts the initial feed stream into a slurry of ice and concentrate, includes a scraped surface heat exchanger that produces, pumps and removes an ice slurry and uses a secondary cooling system to ensure that the crystallizer will operate in any required position and is not sensitive to motion. The separator includes a rotating drum which separates the ice crystals from the surrounding concentrate by the use of centrifugal force and without the use of screens or filters. An auger, rotating at a different speed than the drum, may be located at the center of the drum for removing the ice crystals.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: November 19, 1996
    Assignee: Waterworks International, Inc.
    Inventor: Arie Keus
  • Patent number: 5555796
    Abstract: Heat is applied to a solid or semi-solid material in a cylindrical container in such a way that a precise, predetermined amount of heat is transferred to a horizontal layer of the material until it softens sufficiently to allow the heating element to sink into the material where it will heat the next layer. The container is rotated about a vertical axis, and a horizontally-oriented heating element is lowered into contact with the material to apply heat to a horizontal layer. The heating element is lowered through the material in a controlled manner to heat progressively lower layers within the container, until the whole container has been heated. The heating element may be heated by pumping hot water therethrough, or by other means. A container of hot liquid may be cooled in a similar fashion, by gradually raising a cooling element from the bottom of the container.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: September 17, 1996
    Assignee: Research Applications Inc.
    Inventors: Cornelis Kortschot, Lowell D. Knieriem
  • Patent number: 5518067
    Abstract: A scraped surface heat exchanger comprises a pair of concentric heat exchange tubes. A heat exchange medium passes through the annular chamber between the tubes and a fluid, in particular one whose viscosity increases as it passes through the heat exchanger and whose temperature is to be modified by heat exchange with the heat exchange medium in the annular chamber, passes through the inner of the tubes. A helical scraper blade arrangement extends along the length of the shaft within the inner chamber. The scraper blade arrangement comprises one or more thin plastics or metal blades set within a helical slot which is angled against the direction of flow of the fluid medium and makes with the internal surface of the inner tube a contact sufficient to allow the blade arrangement to rotate within the inner tube when conveying through it the fluid whose temperature is to be modified.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: May 21, 1996
    Assignee: Crown Chemtech Limited
    Inventors: David G. Finch, Nicholas S. Hall-Taylor
  • Patent number: 5488836
    Abstract: The present invention relates to a device for heat exchange between a refrigerant in the course of vaporization and a fluid to be cooled in the course of freezing. According to the invention, the device comprises a conduit for the fluid to be cooled, a shell making, around the conduit, a chamber for the passage of the refrigerant, and a mechanical means for separating, from the wall of the conduit, any solid phase of the fluid to be cooled, consisting of a rotor provided with radial and flexible filaments. The invention applies in particular to the production of homogeneous mixtures of water and ice.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: February 6, 1996
    Assignee: Thermique Generale et Vinicole
    Inventor: Adrien Laude-Bousquet
  • Patent number: 5358031
    Abstract: An interlocking checker brick used to form a checkerwork for use in recovering heat in thermal regenerators and recuperators. The checker brick is made of a refractory material and comprises a rectangular top, a rectangular base, two side walls and two end walls. The end walls each have a generally trapezoidal shape and therefore each side wall has at least a section forming an acute angle with respect to the base. The preferred brick has spaced side walls each of which includes top and bottom sections adjacent to and perpendicular to top and bottom surfaces respectively. Each side wall also includes a central section flaring outwardly and downwardly from its top to its bottom section. Checkerworks utilizing these bricks are arranged to improve the amount of exposed brick surface that acts as a thermal surface and to increase turbulence while reducing laminar flow during alternating cycles of flowing gases and air. A method and apparatus for making the preferred brick is also disclosed.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: October 25, 1994
    Assignee: North American Refractories Company
    Inventor: Jack Hyde
  • Patent number: 5295533
    Abstract: A heat exchanger for exchanging heat between a first fluid and a second fluid comprises a moving partition member for heat transmission between the first fluid and the second fluid, a housing partitioned by the moving partition member into a first chamber for passing the first fluid and a second chamber for passing the second fluid, and a power source for rotating the moving partition member.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: March 22, 1994
    Assignee: Kokusai Gijutsu Kaihatsu Kabushiki Kaisha
    Inventor: Yasuo Ueno
  • Patent number: 5279637
    Abstract: A method of converting industrial, domestic or other sludge, into a pelletized or granular fertilizer, as well as a sludge converter for practicing the method. The sludge is dewatered to form sludge cake solids which are dried in a dryer, and then sorted with a sorter into a sorted product comprising oversized, undersized, and standard sized product. A portion of the sorted product is recycled for mixing and sizing in a mixer with the dewatered sludge cake solids. To control dust and odors, cyclones and a condenser remove a substantial portion of the gaseous particulate matter and condensable gases from the converter, and any remaining noncondensates are burned in the heat source flame. A waste oil burning heat source supplies heat energy to the dryer.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: January 18, 1994
    Assignees: PCL Environmental Inc., Sludge Management, Inc., Riedel Waste Systems, Inc.
    Inventors: Bart T. Lynam, Gerald F. Nelson, David H. Meese, Ronald V. Peterson, Michael G. Ruby, Alan White
  • Patent number: 5141328
    Abstract: A high speed mixing apparatus is shown for slurry materials which includes a stationary housing and a cylindrical rotor mounted for rotation within the housing. The rotor has an outer surface which is embossed with a repeating pattern of pyramidal shapes, each pyramidal shape having four triangular faces which meet at an apex. Each face has a base edge which forms grooves in the rotor for directing the flow of slurry in directions 45 degrees relative to the rotor's axis of rotation.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: August 25, 1992
    Inventor: Jerry D. Dilley
  • Patent number: 5117655
    Abstract: A heat exchange has a main body and a drive shaft in the main body. There is a motor to drive the drive shaft. A rotor is mounted on the drive shaft and has a central hub. Pairs of spaced blades extend radially from the hub to an outer chamber, attached to the outer ends of the blades. There are openings in the hub to communicate a blade with the hub interior and openings in the outer chamber communicating the outer chamber with a blade. There are closure plates at each end of the main body having pairs of inlet/outlet openings. A valve plate between the rotor and each end plate defines gas pathways between on opening and a first end plate and another opening in the second end plate. There are two gas pathways through the apparatus. In the first pathway gas enters an inlet in the first end plate, passes through a valve plate, over the blades of the rotor, through a second valve plate to an outlet of the second end plate.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: June 2, 1992
    Inventor: Raymond L. Anderson
  • Patent number: 5005635
    Abstract: The invention relates to the regenerators of glass melting furnaces. It relates more particularly to a ceramic element for equipping regenerators of glass melting furnaces, having at least one vertical wall, the mean thickness of which is at the most 40 mm, characterized by the presence, on at least one face of this vertical wall, of a plurality of obstacles forming an integral part of the element, the protrusion of the obstacles relative to the base surface of the wall being at least 5 mm, the ratio of the distance separating two consecutive obstacles in the vertical direction to the said protrusion being comprised between 3 and 15, and the angle x formed by the obstacle with the base surface of the wall in the given direction of movement of the fumes and the angle y formed by the obstacle with the base surface of the wall in the given direction of movement of the air to be heated being such that x is less than or equal to y. Application in the glass industry.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: April 9, 1991
    Assignee: Societe Europeenne des Produits Refractaires
    Inventors: Alain P. B. Zanoli, Joseph Recasens
  • Patent number: 4960168
    Abstract: A heat exchanger fan having a hollow central shaft. Hollow blades are formed on the central shaft and a peripheral flange is attached to the distal ends of the hollow blades. The interior of the shaft communicates with the interior of the blades, and openings at the distal ends of the blades extend through the peripheral flange.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: October 2, 1990
    Inventor: Raymond L. Anderson
  • Patent number: 4941749
    Abstract: In apparatus for mixing or kneading various substances, hollow blades are connected to an agitator hub of the invention which comprises:a fluted ring (9) threaded over the shaft (11) and carrying the roots (20) of hollow blades (2);an axial fastening liner (12) interposed between the shaft and the ring and held axially in position by a stopper; andat least one fluid flow circuit passing through the shaft and the ring and opening out into the blades.The invention is applicable to controlling the reaction of chemical compounds.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: July 17, 1990
    Assignee: Societe Anonyme: Moritz
    Inventors: Alain Bouchez, Patrice Cognard, Gerard Marie, Alain Schmidt
  • Patent number: 4940081
    Abstract: A checker brick has a plurality of walls intersecting at a plurality of spaced intersections. Four walls extend outwardly from each intersection in equidistantly-spaced relationship to one another. One of the four walls at each intersection is a common wall that extends between adjacent intersections. The other three walls at each intersection are independent walls. Mating projections and recesses are provided on the opposite surfaces of the brick at the intersections for interlocking bricks stacked in tiers.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: July 10, 1990
    Assignee: North American Refractories Company
    Inventor: Jack Hyde
  • Patent number: 4934448
    Abstract: A rotary heat exchanger comprises a plurality of hollow disc shaped members which are arranged along a distribution conduit and are rotatable about an axis which is concentric with the axis of the distribution circuit. Two diametrically opposed exhaust conduits fluidly interconnect the disc members at locations proximate their peripheries. Bearings and seals are arranged next to one another along inlet and exhaust pipes so that the bearings protect the seals from damage during rotation of the heat exchanger.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: June 19, 1990
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masakazu Uemura, Yoshinori Hirano, Hitoshi Shimonosono
  • Patent number: 4856580
    Abstract: A conveying screw having a tubular helical flight attached only at its opposite end portions to a hollow conveying screw body. Heat exchange medium introduced into the hollow body is transferred along the tubular helical flight.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: August 15, 1989
    Assignee: Berwind Corporation
    Inventor: Richard A. Ley
  • Patent number: 4813473
    Abstract: A compact and maintenance-free means and method of regenerating the sensible heat from flue gases of fossil fuel furnaces by heat exchange through two circular layers of rock beds rotating under two semi-circular mantles with the first mantle applying hot flue gases to the beds and the second withdrawing preheated ambient air needed for combustion by said furnaces. When used for power plant flue gas treatment, layers of acid-resistant pipes containing boiler feedwater are sandwiched between the two rock bed layers to usefully recover the heat units arising from moisture condensation. The enormous water of condensation collects flyash and sulphur dioxide thus removing these pollutants from the stack gases. The heavy rock beds rotate slowly beneath the fixed mantles in a circular, pan-shaped, steel vessel floating on and cooled by a circular pond of water. Friction of rotation is minimal and gas leakage principally prevented by liquid seals.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: March 21, 1989
    Inventor: Arthur F. Johnson
  • Patent number: 4770236
    Abstract: A paddle type rotary dryer includes a hollow shaft and a plurality of tubular members for interconnecting the interior of a shaft with the interior of each of the paddles. The tubular members extend inwardly into the shaft and prevent the flow of condensate from the shaft into the paddles when the paddles are below the shaft. The tubular members also extend outwardly into the hollow portion of each of the paddles for directing steam into the paddles and define an open passageway or slot so that liquid condensate is drained from the paddles and into the shaft when the vanes are disposed above the shaft, and a fluid conduit is adapted to maintain the level of liquid condensate in the shaft at a height which is less than the height of the inwardly directed tubular member.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: September 13, 1988
    Assignee: Blaw-Knox Food & Chemical Equipment Co.
    Inventor: Ronald A. Kulikowski
  • Patent number: 4711041
    Abstract: A drier for the heating and drying of wet, comminuted organic materials comprises a stationary housing with a revolving, hollow axle or rotor (1) with inlet and outlet for a heating medium, and where the rotor has a number of annular drying elements (2) disposed at intervals. The drying elements (2) are heated by the heating medium through heat channels (3). On or between the drying elements, lifting elements (4) are disposed along the circumference. Adjacent lifting elements are disposed in a displaced manner from each other to the same side along the outer periphery of the annular elements (2), so that the leading edges (11) extend along a helical line. The drier hereby provides an improved drying and mixing and has a better efficiency. Furthermore, one can determine how quickly the material being dried shall travel forwards, or how long it shall remain in a certain zone. The invention also relates to a lifting element for the drier.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: December 8, 1987
    Assignee: A/S Atlas
    Inventor: Henrik Ullum
  • Patent number: 4698310
    Abstract: A horizontal cylindrical tank contains a conveyor screw rotatable on a horizontal axis below the symmetry axis of the tank, the latter having at its lower part an inlet at one end for organic material and an outlet at the other end for fermented material. A heating medium is circulated through one of the bearings, a frame supporting the screw, and the latter's peripheral portion. The screw moves sludge along the tank bottom toward the outlet and recirculates fermented material back to the inlet region via a space at one side of the screw, while evolved gas discharges through an outlet in the top of the tank.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: October 6, 1987
    Assignee: Alfa-Laval AB
    Inventors: Bert S. Wikholm, Torsten L. T. Carlsson, Ake R. ster
  • Patent number: 4660628
    Abstract: A heat exchanger (10) for indirectly heating, drying and cooling materials comprises a hollow rotor (40) having an inlet (46) of heating and cooling medium and an outlet (47) of the medium or its condensate, a casing mounted on the hollow rotor, a plurality of disc-shaped base boards (20), a plurality of annular ducts (21, 23; 22, 24) projected from both side surfaces (11, 12) of the base boards (20), the duct forming a passage communicating with the inlet (46) and the outlet (47), arranged so as to be partly superposed sequentially on both front and back surfaces (11, 12) of the base board (20) from the inner peripheral edges to the outer peripheral edges of the base boards (20) in such a manner that partition plates for shielding the ducts (21, 23; 22, 24) being provided in the superposed positions.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: April 28, 1987
    Assignee: Stord Bartz A/S
    Inventors: Per Solberg, Jan Gronhaug
  • Patent number: 4658891
    Abstract: There is provided a thermal processor and method for thermally processing non-Newtonian, shear sensitive, viscous materials which are difficult-to-dry and difficult-to-handle, in particular dewatered waste water sludge from industrial plants such as metal hydroxide sludge from surface finishing and plating operations. The thermal processor includes a container having two parallel shafts disposed longitudinally therein for counter-rotational movement therebetween, a plurality of working tools attached by radially extending arms to said shafts and extending towards and substantially up to the sidewalls of the container. The parallel shafts are spaced from each other such that the paths of travel of the respective working tools attached to the shafts overlap therebetween in an area of material interaction.
    Type: Grant
    Filed: December 5, 1984
    Date of Patent: April 21, 1987
    Assignee: Willow Technology, Inc.
    Inventor: William O. Wurtz
  • Patent number: 4658890
    Abstract: A condenser is provided with a heat exchanger which is rotated in an airtight cylindrical vessel filled with a fluid to be condensed. The rotated heat exchanger has a structure almost similar to a rotor of a steam turbine, namely, has a structure formed of plural pairs of hollow blades arranged individually opposite to each other on both sidewalls of an elongated rectangular hollow axle rotated in the fluid to be condensed, all of those hollows being communicated with each other, so as to circulate a coolant therethrough. As a result, the fluid to be condensed always uniformly contacts with the coolant through surfaces of the blades with an extremely high performance of condensation.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: April 21, 1987
    Assignee: Saga University
    Inventors: Haruo Uehara, Tsutomu Nakaoka
  • Patent number: 4651810
    Abstract: A checkerwork for two upright regeneration chambers of a glass melting furnace defines a multiplicity of adjacently arranged vertical passages alternatingly providing upwardly directed fresh air flow and downwardly directed exhaust flow, the passages being connected by vertically spaced openings producing air turbulence, and the vertical distance between vertically adjacent openings becoming progressively smaller towards the uppermost checkerwork region.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: March 24, 1987
    Assignee: Veitscher Magnesitwerke-Actien-Gesellschaft
    Inventor: Alois Triessnig
  • Patent number: 4640345
    Abstract: This invention provides a structure of a heat exchanger in which a hollow drum, into which a heating or heated medium can be charged, is rotatably housed in a cylindrical outer casing, a large number of hollow projections are formed on the outer peripheral surface of the hollow drum, heating medium supply and discharge passages defined by a partition are provided within the hollow drum, and these heating medium supply and discharge passages communicate with hollow portions of the projections.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: February 3, 1987
    Inventor: Jinichi Nishimura
  • Patent number: 4621684
    Abstract: The heat exchanger is composed of a plurality of heat conducting finned discs materially shaped and joined to form concentrically and annularly disposed, circumferential passages for isolated flow of fluid streams in indirect countercurrent, cocurrent, and series heat exchange relationship. The circumferential passages are provided with axial flow apertures for axial transport of fluid streams through the rotary heat exchanger and enable recovery of the mechanical energies transferred to the fluid streams by the rotative surfaces. The energy recovery feature facilitates high speed designs in which large relative velocities are maintained between the fluid streams and rotative surfaces. Enhanced heat transfer with low friction losses is achieved.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: November 11, 1986
    Inventor: Terry W. Delahunty
  • Patent number: 4596286
    Abstract: A rotary processor useful in mixing, conveying, and heating or cooling a fluid material. Interchangeable subassemblies each comprise a helical coil permanently affixed at each end to a terminal block. The terminal blocks of each subassembly are removably fastened at a preselected orientation to two polygonal segments of a rotatable shaft. The polygonal segments are rotated relative to one another. A portion of the shaft and the subassemblies are supported within a housing having an inlet and an outlet for flow of the material to be processed.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: June 24, 1986
    Assignee: Joy Manufacturing Company
    Inventor: Gary W. Stetler