With Coated, Roughened Or Polished Surface Patents (Class 165/133)
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Patent number: 6945321Abstract: A heat exchanger includes an aluminum member coated with a resin. The resin-coated aluminum member may be formed as a constituent part, e.g., a heat transfer member, a heater core, or the like, of the heat exchanger. In such heat exchangers, the aluminum member is connected to other resin-coated aluminum members by fusing the resin. Energy consumed during the connection of the aluminum members of the heat exchanger may be effectively reduced, and the manufacturing cost of the heat exchanger may be reduced, compared with that of heat exchangers made according to known methods that use a brazing filler metal.Type: GrantFiled: January 24, 2002Date of Patent: September 20, 2005Assignee: Sanden CorporationInventors: Kazuki Hosoya, Akimichi Watanabe
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Patent number: 6942022Abstract: The heat transfer surfaces of a condensation heat exchanger are provided with a coating according to the invention which comprises a sequence of layers which includes at least one hard layer which comprises amorphous carbon or a plasma polymer and at least one soft layer which comprises amorphous carbon or a plasma polymer. The hard and soft layers are applied alternately, the first layer on the heat transfer surface being a hard layer and the last layer of the coating being a soft layer. The last, soft layer is distinguished in particular by hydrophobic properties. The layer sequence ensures condensation of drops and, at the same time, protects against drop impingement erosion.Type: GrantFiled: November 7, 2001Date of Patent: September 13, 2005Assignee: ALSTOM Technology Ltd.Inventors: Francisco Blangetti, Harald Reiss
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Patent number: 6914218Abstract: A vacuum oven for decontaminating items, a system incorporating multiple such vacuum ovens and a method of operating such system are provided. The ovens are portable. They can have a vacuum drawn in them and can be heated by being coupled to a vacuum and a power source, respectively at a first location and then be decoupled from the vacuum and power sources and moved to a second location such as a glove box or clean room while still maintaining a vacuum.Type: GrantFiled: October 10, 2002Date of Patent: July 5, 2005Assignee: Wems, Inc.Inventors: Dmitry Vernik, Christopher B. Dreike, Terry D. Wolfson
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Patent number: 6913074Abstract: A method of manufacturing an internal grooved tube according to the present invention includes the steps of inserting a grooved plug into a blank tube rotatably, and then pressing the blank tube against the outside surface of the grooved tube with several balls revolving both around the circumference of the blank tube and on its axis in location of the grooved plug inserted, while drawing out the blank tube longitudinally in one direction, wherein the number of balls is limited to 2 to 3. A lead angle ? of the grooves to the tube axis is preferably limited to 26 to 45 degrees.Type: GrantFiled: August 4, 2003Date of Patent: July 5, 2005Assignee: The Furukawa Electric Co., Ltd.Inventors: Koji Yamamoto, Tetsuya Sumitomo, Yasutoshi Mori, Toshiaki Hashizume
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Patent number: 6913073Abstract: A metallic heat transfer tube, in particular for the evaporation of liquids from pure substances or mixtures on the outside of the tube. Fins are integrally formed on the outside of the tube. Recesses are arranged in the area of the base of the primary grooves and extend between the fins. The recesses are in the form of re-entrant secondary grooves. The mechanical stability of the tube is not negatively influenced because material is primarily removed from the fin flanks toward the base of the groove so that the re-entrant secondary grooves are radially open.Type: GrantFiled: January 9, 2002Date of Patent: July 5, 2005Assignee: Wieland-Werke AGInventors: Andreas Beutler, Manfred Knab, Andreas Knoepfler, Axel Kriegsmann, Klaus Menze, Gerhard Schuez, Andreas Schwitalla
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Patent number: 6911267Abstract: The present invention is directed to a brazing sheet comprising an aluminum 3xxx series core alloy wherein at least one side thereof is provided with an aluminum clad material comprising from 0.7-2.0% Mn and 0.7-3.0.0% Zn, wherein the clad is capable of being used as an Inner-liner of a heat exchange product. In one embodiment one side of the core alloy is provided a material that comprises from 0.7-2.0% Mn and 0.7-3.0% Zn and the other side of the core is provided with an aluminum alloy comprising at least 5.5% Si. Thee are further provided methods for preparing brazing sheets as described herein as well as methods for use of brazing sheet materials including as tube stock and as heat exchangers, as well as other applications.Type: GrantFiled: September 10, 2003Date of Patent: June 28, 2005Assignee: Pechiney Rolled ProductsInventors: H. Scott Goodrich, Scott L. Palmer, Gregory R. Johnson, Zayna M. Connor
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Patent number: 6904747Abstract: A heat exchanger for a turbine is provided wherein the heat exchanger comprises a heat transfer cell comprising a sheet of material having two opposed ends and two opposed sides. In addition, a plurality of concavities are disposed on a surface portion of the sheet of material so as to cause hydrodynamic interactions and affect a heat transfer rate of the turbine between a fluid and the concavities when the fluid is disposed over the concavities.Type: GrantFiled: August 30, 2002Date of Patent: June 14, 2005Assignee: General Electric CompanyInventors: Nirm Velumylm Nirmalan, Michael John Bowman
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Patent number: 6904962Abstract: An enthalpy exchanger is disclosed having a heat conducting wall along both sides of which two respective media can flow in mutual enthalpy-exchanging contact. The wall is provided on at least one side with a hydrophilic cover layer having little or no hygroscopic action. The cover layer may serve to absorb and retain a limited amount of moisture for evaporation into the media.Type: GrantFiled: February 10, 2004Date of Patent: June 14, 2005Assignee: Oxycell Holding B.V.Inventor: Johannes Antonius Maria Reinders
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Patent number: 6904961Abstract: A high temperature prime surface heat exchanger is created using adjacent pairs of plates having braze cladding on a first surface thereof that are formed to create fluid flow passages for coolant and fluid flow passages for hot gas when assembled into a core by stacking the plates. The coolant passages are adjacent the first or clad surface of each formed plate to avoid direct contact with the high temperature gas flowing in the hot gas passages. The adjacent plate pairs are joined by brazing of a contacting portion of the first surface on each plate to form sealed coolant passages the core.Type: GrantFiled: January 7, 2003Date of Patent: June 14, 2005Assignee: Honeywell International, Inc.Inventor: Steven Ayres
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Patent number: 6899166Abstract: On the surface of a heat exchanging portion in a heat exchanger, a film made of a polyaniline is formed. When the heat exchanger operates, condensed water is adhered on the surface of the heat exchanger, and contacts the film made of the polyaniline. Accordingly, oxygen dissolved in the condensed water becomes active oxygen by the polyaniline, and organic substances contained in the condensed water is decomposed. Thus, an amount of organic substances attached to a surface of the heat exchanger can be reduced in low cost without equipment extension.Type: GrantFiled: August 29, 2001Date of Patent: May 31, 2005Assignees: Denso CorporationInventors: Hitoshi Kuno, Yasushi Okamoto, Tomomi Takagi, Kengo Kobayashi, Toshiya Nagasawa, Kenichi Morita
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Patent number: 6899170Abstract: A thermal control device for controlling the temperature of a craft/spacecraft is an electrostatic switch causing a large change in apparent emissivity. A flexible covering has a high emissivity and makes close contact with the surface of the spacecraft when electrostatically attracted thereto, when the covering is out of contact, the spacecraft surface emissivity controls radiation. The device can operate with moderate levels of DC voltages. Application of voltage results in high emissivity while removal of voltage allows a separator to move the covering out of contact and thus results in low emissivity.Type: GrantFiled: November 15, 2001Date of Patent: May 31, 2005Inventors: William J. Biter, Sung J. Oh, Stephen M. Hess
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Patent number: 6886628Abstract: A method of manufacturing metal fins suitable for use in a heat exchanger which includes providing a coated patterned fin stock having a series of parallel stripes disposed longitudinally across the width of one surface of the fin stock. The stripe pattern is evenly spaced in the central portion of the fin stock, and staggered or more further spaced apart at the edges of said fin stock. The fin stock is passed through a series of forming dies to form or draw a plurality of tube receiving collared holes in the fin stock, followed by slitting or cutting the fin stock longitudinally to form a plurality of fin strips. The staggered spacing compensates for transverse movement of the fin stock during the drawing operation, and assures for accurate positioning of the collars between the fin stripes. The invention also includes the use of the fins in a high density coil design for use in a heat exchanger.Type: GrantFiled: December 4, 2003Date of Patent: May 3, 2005Assignee: Carrier CorporationInventors: Steven J. Spencer, Paul S. Sacks
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Patent number: 6883597Abstract: An improved heat transfer tube and a method of formation thereof. The inner surface of the tube has a primary set of fins and an intermediate sets of fins positioned in the areas between the primary fins and at an angle relative to the primary fins. While intermediate fins may be used with primary fins arranged in any pattern, in a preferred embodiment of the inner surface tube design, the intermediate fins are positioned relative to the primary fins to result in a grid-like appearance. Tests show that the performance of tubes having the intermediate fin designs of the present invention is significantly enhanced. A first set of rollers creates the primary and intermediate fin designs on at least one side of a board. A second set of rollers may be used to further enhance the performance.Type: GrantFiled: April 17, 2001Date of Patent: April 26, 2005Assignee: Wolverine Tube, Inc.Inventors: Petur Thors, Ramachandran Narayanamurthy
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Patent number: 6863865Abstract: A method of sterilizing a pharmaceutical composition containing a suspension of a pharmaceutical comprises rapidly heating the pharmaceutical composition from ambient temperature to an elevated temperature, maintaining it at or above the elevated temperature for a period of time, and rapidly cooling the pharmaceutical composition to ambient temperature.Type: GrantFiled: September 30, 2002Date of Patent: March 8, 2005Assignee: Breath LimitedInventors: Ian G. C. McAffer, Kailash S. Purohit
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Patent number: 6863984Abstract: A composition and method for improving the adhesion properties of catalytic and adsorptive compositions to a substrate through the addition of clay and/or silicone binder is disclosed. Preferably, the composition includes manganese dioxide and attapulgite clay and/or a silicone polymer which is adhered to a metal substrate, such as a motor vehicle radiator.Type: GrantFiled: January 12, 2001Date of Patent: March 8, 2005Assignee: Engelhard CorporationInventors: Jeffrey B. Hoke, Ronald M. Heck
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Patent number: 6858312Abstract: Use of an aqueous composition, which has been prepared by dissolving (A) dihydroxypropylchitosan and (B) 1,2,3,4-butanetetracarboxylic acid (B) in an aqueous medium, makes it possible to provide articles excellent in hydrophilicity, antibacterial and deodorant activities, touch feeling, antifogging property, paper strength, dyeability, waterproofness, antifouling property and/or the like.Type: GrantFiled: July 6, 2001Date of Patent: February 22, 2005Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Nihon Parkerizing Co., Ltd.Inventors: Nobuyuki Kobayashi, Shinya Tsuchida, Takanori Sannan, Kazuya Tanaka, Tetsuo Otsuki, Ryoji Morita
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Publication number: 20040262579Abstract: A process to reduce the temperature of a hydrogen and carbon monoxide containing gas by contacting the gas with a metal alloy surface having a lower temperature than the temperature of the gas, wherein the metal alloy surface has between 0 and 20 wt % iron, between 0 and 5 wt % aluminium, between 0 and 5 wt % silicon, between 20 and 50 wt % chromium and at least 35 wt % nickel, wherein the metal alloy surface maintains it lower temperature than the temperature of the gas by making use of coolant water.Type: ApplicationFiled: April 21, 2004Publication date: December 30, 2004Inventors: Franciscus Gerardus Van Dongen, Winnifred De Graaf, Thian Hoey Tio, Anthonij Wolfert
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Patent number: 6834515Abstract: In a plate-fin exchanger having a plurality of fins disposed between neighboring parting sheets, at least a portion of at least one of the fins has a textured surface. The textured surface is in the form of grooves or fluting formed on or applied to the surface of the fin material used in the plate-fin exchanger.Type: GrantFiled: September 13, 2002Date of Patent: December 28, 2004Assignee: Air Products and Chemicals, Inc.Inventors: Swaminathan Sunder, Patrick Alan Houghton, Vladimir Vasilievich Kuznetsov
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Publication number: 20040256089Abstract: A method of surface treating an aluminum alloy base body of an heat exchanger which method enables an etching procedure to be carried out uniformly and quickly and a corrosion-resistant chemical conversion coating to be formed, is effected by pretreating the Al heat exchanger base body with an aqueous pre-treating liquid having a pH of 9.0 or less, etching the pretreated base body with an aqueous alkaline solution having a pH of 9.0 or more, and then subjecting the etched base body to a chemical conversion treatment or a hydrophilicity-enhancing treatment.Type: ApplicationFiled: May 12, 2004Publication date: December 23, 2004Inventors: Kengo Kobayashi, Osamu Kasebe, Hiroyoshi Sugawara, Kazuhisa Uchiyama, Kenji Karube, Kazunari Hamamura, Kensuke Shimoda
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Publication number: 20040244954Abstract: A heat exchanger includes plural laminated tubes through which a coolant from a fuel cell flows, fins arranged between the tubes and at outermost sides in a lamination direction of the tubes, core plates connected to longitudinal end portions of the tubes, and tank members attached to the core plates to form tank spaces. The tubes are made of a first insulating material, and the fins and the core plates are bonded to the tubes by using metal parts provided separately from each other on surfaces of the tubes. In addition, a coating portion is coated with a second insulating material on surfaces of the core plates at least at an exposed position of the core plates and at positions around brazing portions of the core plate bonded to the tubes. Accordingly, the heat exchanger can be insulated from the fuel cell without using an electrical insulating liquid.Type: ApplicationFiled: June 2, 2004Publication date: December 9, 2004Inventors: Tetsuya Goto, Takaki Okochi, Yoshihiko Sonoda, Atsushi Hayasaka
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Publication number: 20040244952Abstract: An integrated heat spreader is presented. The heat spreader is constructed and arranged to be adhesively affixed, with a sealant, to at least a portion of a component, such as a substrate. The heat spreader includes a body portion, a lip portion substantially vertically oriented and integrally formed with the body portion, and a step portion integrally formed with the lip portion. As such, adhesion of the heat spreader to the sealant is increased, and failure due to shear stresses at the heat spreader bonding surface is prevented.Type: ApplicationFiled: July 1, 2004Publication date: December 9, 2004Applicant: INTEL CORPORATIONInventors: Sabina Houle, Ashay Dani
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Publication number: 20040226689Abstract: A heat sink arrangement for modular electronic and/or opto-electronic equipment is provided. The equipment module is inserted into an interface and a heat sink is pivotably arranged so as to be brought into contact with the inserted module. The equipment module may have an angled, or partially angled, so as to assist in bringing the module in contact with the heat sink.Type: ApplicationFiled: March 24, 2004Publication date: November 18, 2004Inventors: Andrew Lee Thompson, Kim Leeson
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Publication number: 20040226698Abstract: An enthalpy exchanger is disclosed having a heat conducting wall along both sides of which two respective media can flow in mutual enthalpy-exchanging contact. The wall is provided on at least one side with a hydrophilic cover layer having little or no hygroscopic action. The cover layer may serve to absorb and retain a limited amount of moisture for evaporation into the media.Type: ApplicationFiled: February 10, 2004Publication date: November 18, 2004Inventor: Johannes Antonius Maria Reinders
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Publication number: 20040226704Abstract: A plate heat exchanger, comprising a plurality of mutually facing plates that are hermetically coupled at at least one substantially peripheral portion and form at least two separate circuits for at least two fluids, each one of said plurality of plates having access ports that provide input ducts and output ducts for said at least two fluids, at least one portion of at least one face of at least one of said plurality of plates being uneven.Type: ApplicationFiled: August 13, 2003Publication date: November 18, 2004Applicant: ONDA S.p.A.Inventors: Giuseppe Sella, Giovanni Antonio Longo, Roberto Sartori, Bruno Benetton, Giorgio Lunardi
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Patent number: 6813901Abstract: An absorption refrigerator includes a high temperature regenerator for heating a water solution including a halogen compound to generate steam. An oxide film having thickness of 0.02-5.0 &mgr;m, one of the colors blue, purple and gray, or a hydroxyl group is formed on a surface of at least one of the high temperature regenerators and the heat exchanger.Type: GrantFiled: April 20, 2001Date of Patent: November 9, 2004Assignee: Hitachi, Ltd.Inventors: Katsumi Mabuchi, Heihatiro Midorikawa, Tomoko Kikuchi, Takashi Honda, Michihiko Aizawa, Masahiko Ito
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Patent number: 6810999Abstract: A thin coating of a solution containing a low surface energy material is applied on the inner surface of tubing of a condenser or an evaporator of an air conditioning system. The solution is run through the tubing of the heat exchanger and drained. After drying, a monomolecular layer of the low surface energy material in solution remains on the inner surface of the tubing. A polymer with a lower surface energy and chemical and thermal resistance is employed, such as silane, fluorocarbons, polyetheretherketon (PEEK) and polysulfone. The thin coating of the lower surface energy material in solution prevents lubricating oil from the compressor which mixes with the refrigerant from wetting over the inner surface of the tubing, encouraging the formation of oil droplets. By preventing the build up of lubricating oil, heat transfer is improved.Type: GrantFiled: August 7, 2001Date of Patent: November 2, 2004Assignee: Carrier CorporationInventor: James William Otter
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Publication number: 20040200599Abstract: Process for depositing an amorphous carbon layer on substrates, such as heat exchangers, and the coated substrates so formed, such as an aluminum fined heat exchanger.Type: ApplicationFiled: April 10, 2003Publication date: October 14, 2004Inventor: Michael William Bradley
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Publication number: 20040200603Abstract: In an adsorber for an adsorption type refrigerator of the present invention, aluminum heat exchangers 120, 130 arranged in a casing 110 are provided with films which do not permit moisture to pass therethrough, such as SiO3 films, anodic oxide coating films and several ppm to a hundred and several tens of ppm of inorganic negative ions such as PO43−, SiO32− are added in the water enclosed in the casing.Type: ApplicationFiled: April 6, 2004Publication date: October 14, 2004Inventors: Hisao Nagashima, Junji Otobe, Katsuya Ishii
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Publication number: 20040194924Abstract: A heat sink is manufactured by forming a fin 2 for dissipating heat by separating a length of material from a substrate 1 while leaving the proximal end attached to the substrate 1. The fins are cut from the substrate by stamping process using the stamping single or progressive die tooling cutting the substrate 1 along dotted line 16. The heat sink is a unitary construction, with the fins 2 being integrally formed with the substrate 1.Type: ApplicationFiled: December 24, 2003Publication date: October 7, 2004Inventor: Chee Tieng Wong
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Publication number: 20040194931Abstract: A heat exchanger comprising a heat exchange core (1) including a plurality of tubes (2) flowing a medium for heat exchange and a pair of tanks (4) to which ends of said tubes are connected, each tube formed by shaping a plate member (200) not clad with a row laminated brazing material and having a sacrifice layer (210) on an outer surface thereof and a plurality of recessed portions (203) formed on an outer surface of said sacrifice layer and filled with a brazing material (R).Type: ApplicationFiled: March 1, 2004Publication date: October 7, 2004Inventors: Soichi Kato, Shoji Akiyama
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Publication number: 20040194930Abstract: The invention concerns a welded stainless steel tube for use in fluid evaporation techniques, particularly a food fluid, characterized in that it comprises, on its outer heat-exchanging surface, mostly smooth, localized means for accumulating and conducting condensations generated on the heat-exchanging smooth surface, means consisting of elevations in the form of shoulders extending over the length of the tube and capable of forming recesses distributed over said tube length.Type: ApplicationFiled: December 10, 2003Publication date: October 7, 2004Applicant: SOCIETE MEUSIENNE DE CONSTRUCTIONS MECANIQUESInventors: Laurence Boulange, Francoise Haegeli, Joel Chobert
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Patent number: 6793011Abstract: A folded fin heat sink assembly and a method of fabricating a folded fin heat sink assembly for use as a cooling solution in micro-electronics and/or telecommunication applications. The heat sink assembly is formed by placing a sheet or paste of Sn—Zn solder upon a copper base plate, placing one or more aluminum folded fin assemblies on the solder sheet or paste, heating the base plate, the folded fin assembly and the solder to a temperature exceeding the liquidus temperature of the solder and allowing the solder to flow, and cooling the solder to form a soldered joint between the base plate and the folded fin assembly.Type: GrantFiled: February 14, 2002Date of Patent: September 21, 2004Assignee: ATS Automation Tooling Systems Inc.Inventors: Ross D. Armstrong, Alin Lla, Victor Kheil
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Publication number: 20040168790Abstract: A catalyst coating 5 for decomposing ozone in the air is applied to an outer surface of cooling pipes 3 and radiating fins 4 of a radiator 2. A peel sensor 2 is provided on the catalyst coating 5 of the radiator 2 to detect a loss (remaining amount) of the catalyst coating 5. The position of detection of the peel sensor 2 is determined according to a temperature characteristic of the radiator 2, and a flow rate of the air passing through the radiator 2. The position of detection of the peel sensor 2 can be determined easily and appropriately, such that loss and deterioration of the catalyst coating 5 can be detected with high precision.Type: ApplicationFiled: October 30, 2003Publication date: September 2, 2004Inventors: Hiroki Hosoe, Tatsuya Okayama, Akira Murakami, Kengo Takamizawa
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Patent number: 6780224Abstract: Method and apparatus for treatment of air conditioning systems and the like provides an air treatment element (18) comprising a microbial control medium and an entrainment medium therefor. The air treatment element (18) is adapted to be placed on the upstream side of the air cooling element (14) of an air conditioning system so that the air stream (16) thereto has entrained therein droplets of entrainment medium (32) containing the microbial treatment medium which are then condensed on the cooling surfaces, thereby removed from the air stream (16) and effectively applied to all relevant surfaces for exerting an effective microbial control action.Type: GrantFiled: May 24, 2002Date of Patent: August 24, 2004Assignee: Universal Master Products LimitedInventors: Harry Banham, David Webber
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Publication number: 20040134643Abstract: The present invention discloses an apparatus including a magnesium alloy vessel substantially free of aluminum and zinc, with the vessel having a hollow interior cavity containing a working fluid, wherein the improvement includes the formation of a stable, protective layer on the inside wall of the vessel, the layer establishing compatibility with the working fluid and preventing base metal corrosion by the working fluid, the vessel including magnesium in combination with a gettering metal.Type: ApplicationFiled: August 19, 2003Publication date: July 15, 2004Inventors: John H. Rosenfeld, G. Yale Eastman
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Publication number: 20040131877Abstract: An article includes turbulation material bonded to a surface of a substrate via a bonding agent, such as a braze alloy. In an embodiment, the turbulation material includes a particulate phase of discrete metal alloy particles having an average particle size within a range of about 125 microns to about 4000 microns. Other embodiments include methods for applying turbulation and articles for forming turbulation.Type: ApplicationFiled: June 5, 2003Publication date: July 8, 2004Inventors: Wayne Charles Hasz, Robert Alan Johnson, Ching-Pang Lee, Mark Gerard Rettig, Nesim Abuaf, John Howard Starkweather
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Publication number: 20040129411Abstract: A high temperature prime surface heat exchanger is created using adjacent pairs of plates having braze cladding on a first surface thereof that are formed to create fluid flow passages for coolant and fluid flow passages for hot gas when assembled into a core by stacking the plates. The coolant passages are adjacent the first or clad surface of each formed plate to avoid direct contact with the high temperature gas flowing in the hot gas passages. The adjacent plate pairs are joined by brazing of a contacting portion of the first surface on each plate to form sealed coolant passages the core.Type: ApplicationFiled: January 7, 2003Publication date: July 8, 2004Inventor: Steven Ayres
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Publication number: 20040123980Abstract: A heat exchanger (1) including a foam (14) having hollow ligaments (15) and an interstital volume (13).Type: ApplicationFiled: January 14, 2003Publication date: July 1, 2004Inventors: Douglas T. Queheillalt, Haydn N.G. Wadley, Yasushi Katsumi
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Patent number: 6753091Abstract: A wax decoration item is made by the method including the steps of mixing preparing polyethylene wax, cyanide polymer and white wax to be a mixture by way of heating; pouring the mixture in a mold and obtaining a wax item with fixed shape when removing the mold; melting a colloid material to be a transparent liquid and coating the colloid material onto an outer periphery surface of the wax item and the colloid material being not mixed with the wax item; condensing the colloid material which is fixed on the wax item.Type: GrantFiled: December 10, 2001Date of Patent: June 22, 2004Inventor: Ming-Jen Huang
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Publication number: 20040112585Abstract: A method of controlling temperature of a heat source in contact with a heat exchanging surface of a heat exchanger, wherein the heat exchanging surface is substantially aligned along a plane. The method comprises channeling a first temperature fluid to the heat exchanging surface, wherein the first temperature fluid undergoes thermal exchange with the heat source along the heat exchanging surface. The method comprises channeling a second temperature fluid from the heat exchange surface, wherein fluid is channeled to minimize temperature differences along the heat source. The temperature differences are minimized by optimizing and controlling the fluidic and thermal resistances in the heat exchanger. The resistances to the fluid are influenced by size, volume and surface area of heat transferring features, multiple pumps, fixed and variable valves and flow impedance elements in the fluid path, pressure and flow rate control of the fluid, and other factors.Type: ApplicationFiled: October 30, 2003Publication date: June 17, 2004Applicant: Cooligy Inc.Inventors: Kenneth Goodson, Thomas Kenny, Peng Zhou, Girish Upadhya, Mark Munch, Mark McMaster, James Hom
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Publication number: 20040112571Abstract: A method and apparatus for cooling a hat source configured along a lane. The heat exchanger comprises an interface layer that perform thermal exchanger with the heat source and configured to pass fluid from a first side to a second side. The manifold layer comprises a first layer in contact with the heat source and has an appropriate thermal conductivity to pass heat to the interface layer. The manifold layer further comprises a second layer couple to the first layer and in contact with the second side of the interface layer. The first layer comprises a recess area having a heat conducting region in contact with the heat exchanging layer. The first layer includes at least one inlet and/or outlet port. The second layer includes at least one inlet and/or outlet port. At least one inlet and/or outlet port is positioned substantially parallel or perpendicular with respect to the plane.Type: ApplicationFiled: October 30, 2003Publication date: June 17, 2004Applicant: Cooligy, Inc.Inventors: Thomas W. Kenny, Mark Munch, Peng Zhou, James Gill Shook, Girish Upadhya, Kenneth Goodson, Dave Corbin, Mark McMaster, James Lovette, James Hom
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Publication number: 20040104022Abstract: A heat exchanger apparatus and method of manufacturing comprising: an interface layer for cooling a heat source and configured to pass fluid therethrough, the interface layer having an appropriate thermal conductivity and a manifold layer for providing fluid to the interface layer, wherein the manifold layer is configured to achieve temperature uniformity in the heat source preferably by cooling interface hot spot regions. A plurality of fluid ports are configured to the heat exchanger such as an inlet port and outlet port, whereby the fluid ports are configured vertically and horizontally. The manifold layer circulates fluid to a predetermined interface hot spot region in the interface layer, wherein the interface hot spot region is associated with the hot spot. The heat exchanger preferably includes an intermediate layer positioned between the interface and manifold layers and optimally channels fluid to the interface hot spot region.Type: ApplicationFiled: May 16, 2003Publication date: June 3, 2004Applicant: Cooligy, Inc.Inventors: Thomas W. Kenny, Mark Munch, Peng Zhou, James Gill Shook, Girish Upadhya, Kenneth Goodson, David Corbin
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Publication number: 20040104021Abstract: It is an object of the present invention to provide an inexpensive heat radiating fin having a high cooling effect. A coating metal layer consisting of a metallic material with ionization tendency larger than that of silver is stacked on a surface of a heat radiating fin main body by plating or the like to form the heat radiating fin such that the coating metal layer has a layer thickness which increases a difference between a heat capacity of the coating metal layer and a heat capacity of the air, and facilitates chemical adsorption of molecules in the air. The heat radiating fin radiates heat while being brought into contact with the air serving as a cooling fluid.Type: ApplicationFiled: September 17, 2003Publication date: June 3, 2004Inventor: Masami Kujirai
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Patent number: 6742576Abstract: Heat exchanger structures for conducting fluid are provided in the form of multiple spaced-apart polymeric tubes embedded in foil laminate which includes metal and at least one polymer. Useful polymers are polyolefins, polyesters and polyamides. The metal provides barrier protection making the structure suitable for refrigeration uses as well as providing an extended heat transfer surface between the tubes for when the elements are used for heat transfer, and the polymer on the foil permits it to be sealed closely around the tubes to improve heat transfer. The tubes are of a geometry which provides burst strength, so that the metal can be quite thin.Type: GrantFiled: September 26, 2002Date of Patent: June 1, 2004Assignee: E. I. du Pont de Nemours and CompanyInventor: Kevin Bergevin
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Publication number: 20040099409Abstract: A heat exchanger tube that comprises a tubular member having a longitudinal axis and having an inner surface that is divided into at least two regions along the circumferential direction. A first plurality of polyhedrons are formed on the inner surface along at least one polyhedral axis. Each of the polyhedrons have four opposite sides. The polyhedrons have first and second faces that are disposed parallel to the polyhedral axis and have third and fourth faces disposed oblique to the polyhedral axis. The polyhedral axis is disposed at a first helical angle with respect to the longitudinal axis of the tube. A second plurality of polyhedrons is formed on the inner surface adjacent to the first plurality of polyhedrons. The second plurality of polyhedrons is disposed along at least one polyhedral axis. Each of the polyhedrons has four opposite sides. The polyhedrons have first and second faces disposed parallel to the polyhedral axis and have third and fourth faces disposed oblique to the polyhedral axis.Type: ApplicationFiled: November 25, 2002Publication date: May 27, 2004Inventors: Donald L. Bennett, Liangyou Tang, James E. Bryan
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Patent number: 6736204Abstract: This invention relates to a heat transfer surface (3) or tubular or plate-like bodies (4) having a microstructure (7) projecting out of the base surface (3a) and consisting of projections (6) which are galvanized onto the base surface (3) with a minimum height of 10 &mgr;m. The object of this invention is to create a heat transfer surface (3) of this type which is characterized by an increase in thermal efficiency of its heat transfer surfaces (3) with the smallest possible temperature differences and is suitable for both nucleate boiling and film condensation with a justifiable manufacturing expense. The object is achieved according to this invention by the fact that the base surface (3a) is covered entirely or partially with projections (6); these projections (6) are applied in the form of ordered microstructures (7) and they have a pin shape, extending with their longitudinal axis (6c) either at a right angle to the base surface (3a) or at an angle (&agr;) between 30° and 90°.Type: GrantFiled: November 27, 2002Date of Patent: May 18, 2004Assignee: SDK-Technik GmbHInventors: Dieter Gollan, Jovan Mitrovic, Andreas Schulz, Helmut Pietsch
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Patent number: 6725911Abstract: A condensing heat exchanger structure in contact with a combustion environment and which structure includes a ferrous substrate is provided with a corrosion resistant diffusion coating applied to the ferrous substrate via a fluidized bed application. Also provided is a method for improving the corrosion resistance of a condensing heat exchanger structure which includes a ferrous substrate and a surface portion at least partially exposed to a combustion product-containing environment. In such method, a corrosion resistant diffusion coating is applied onto the ferrous substrate via a fluidized bed application.Type: GrantFiled: September 28, 2001Date of Patent: April 27, 2004Assignee: Gas Research InstituteInventors: Palitha Jayaweera, Angel Sanjurjo, Kai-Hung Lau
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Patent number: 6722134Abstract: A turbine component having a surface provided with a heat transfer enhancement feature formed therein that includes at least one linear surface concavity comprised of plural overlapped surface concavities.Type: GrantFiled: September 18, 2002Date of Patent: April 20, 2004Assignee: General Electric CompanyInventor: Ronald Scott Bunker
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Patent number: 6722420Abstract: A heat transfer tube with a finned inner surface is divided into at least two zones (Z1 to Zm) in a peripheral direction. The fins extend at an angle of inclination &agr; with respect to the longitudinal axis of the tube, are arranged in the individual zones (Z1 to Zm) in any desired periodic combination and sequence of at least two fin heights (H1 to Hn, H1>H2>. . . >Hn). Adjacent zones border thereby on one another so that the fin sequence is staggered for at least one fin in longitudinal direction of the tube. Modifications include the finned inner surface being divided into groups of zones, in which the angle of inclination of the fins is uniform, however, varies between adjacent groups.Type: GrantFiled: September 6, 2002Date of Patent: April 20, 2004Assignee: Wieland-Werke AGInventors: Christoph Walther, Rolf Wamsler
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Publication number: 20040069466Abstract: The heat transfer surfaces of a condensation heat exchanger are provided with a coating according to the invention which comprises a sequence of layers which includes at least one hard layer which comprises amorphous carbon or a plasma polymer and at least one soft layer which comprises amorphous carbon or a plasma polymer. The hard and soft layers are applied alternately, the first layer on the heat transfer surface being a hard layer and the last layer of the coating being a soft layer. The last, soft layer is distinguished in particular by hydrophobic properties. The layer sequence ensures condensation of drops and, at the same time, protects against drop impingement erosion.Type: ApplicationFiled: October 9, 2003Publication date: April 15, 2004Inventors: Francisco Blangetti, Harald Reiss