With Coated, Roughened Or Polished Surface Patents (Class 165/133)
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Publication number: 20040069467Abstract: An improved heat transfer tube and a method of formation thereof. The inner surface of the tube is enhanced with a plurality of protrusions that reduce tube side resistance and improve overall heat transfer performance. The protrusions create additional paths for fluid flow within the tube and thereby enhance turbulence of heat transfer mediums flowing within the tube. This increases fluid mixing to reduce the boundary layer build-up of the fluid medium close to the inner surface of the tube, such build-up increasing the resistance and thereby impeding heat transfer. The protrusions also provide extra surface area for additional heat exchange. The method of this invention includes using a tool, which can easily be added to existing manufacturing equipment, having a cutting edge to cut through ridges on the inner surface of the tube to create ridge layers and a lifting edge to lift the ridge layers to form the protrusions.Type: ApplicationFiled: June 10, 2003Publication date: April 15, 2004Inventors: Petur Thors, Nikolai Zoubkov
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Patent number: 6713774Abstract: A structure and method for changing or controlling the thermal emissivity of the surface of an object in situ, and thus, changing or controlling the radiative heat transfer between the object and its environment in situ, is disclosed. Changing or controlling the degree of blackbody behavior of the object is accomplished by changing or controlling certain physical characteristics of a cavity structure on the surface of the object. The cavity structure, defining a plurality of cavities, may be formed by selectively removing material(s) from the surface, selectively adding a material(s) to the surface, or adding an engineered article(s) to the surface to form a new radiative surface. The physical characteristics of the cavity structure that are changed or controlled include cavity area aspect ratio, cavity longitudinal axis orientation, and combinations thereof.Type: GrantFiled: November 30, 2000Date of Patent: March 30, 2004Assignee: Battelle Memorial InstituteInventors: John G. DeSteese, Zenen I. Antoniak, Michael White, Timothy J. Peters
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Publication number: 20040050538Abstract: 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: ApplicationFiled: September 13, 2002Publication date: March 18, 2004Inventors: Swaminathan Sunder, Patrick Alan Houghton, Vladimir Vasilievich Kuznetsov
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Patent number: 6705391Abstract: A heat exchanger includes a metal fin assembly and metal tubing for carrying a heat exchange fluid. The tubing is located in passages of the assembly. Films bridge gaps between the tubing exterior surfaces and interior wall surfaces of tubes that form the passages. Exposed, exterior surfaces of the fin assembly and tubing are coated. The films and coatings are formed by electro-depositing electrically insulating powder on the heat exchanger exposed exterior surfaces. The film bridges the gap to prevent transfer of fungi and/or bacteria across the gap. The coating and film are very smooth to reduce the tendency for fungi and bacteria to accumulate. The powder can include an agent having antifungal and/or antibacterial properties.Type: GrantFiled: October 19, 2001Date of Patent: March 16, 2004Inventor: Scott J. Lewin
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Patent number: 6698507Abstract: An aluminum alloy heat exchanger having excellent hydrophilicity and resistance to absorption or impregnation of tobacco odorous components has an organic hydrophilic coating layer formed on at least a portion of a base body of the heat exchanger and containing (A) at least one chitosan compound, (B) at least one two or more carboxyl group-containing organic compound and (C) at least one hydrophilic polymeric substance different from the components (A) and (B), in which the total solid content of components (A) and (B) is 20 mass % or more and the solid content of component (C) is 0.1 to 10 mass %.Type: GrantFiled: January 2, 2003Date of Patent: March 2, 2004Assignees: Nihon Parkerizing Co., Ltd., Denso CorporationInventors: Kazunari Hamamura, Kengo Kobayashi, Hiroyoshi Sugawara, Osamu Kasebe, Kazuhisa Uchiyama
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Publication number: 20040035561Abstract: A heat exchanger, which is able to improve heat transmission function and reduce distances between fins to improve heat exchanging function and reduce a size by coating surfaces of the fins with certain materials to make condensate water attached on the surfaces of the fins discharged smoothly, comprises fins arranged with certain gaps therebetween to flow the air; and a tube, through which the fluid passes, installed to penetrate the fins, and the fins are arranged so that one surfaces treated by hydrophilic material and the other surfaces treated by water repellent material face each other with certain gaps therebetween.Type: ApplicationFiled: January 7, 2003Publication date: February 26, 2004Inventors: Cheol-Soo Ko, Se-Yoon Oh, Sai-Kee Oh, Yong-Cheol Sa, Dong-Yeon Jang
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Publication number: 20040035562Abstract: In a heat exchanger for cooling air, a tube has a streamlined-shaped cross-section so that air flows along an outer surface of the tube without stagnating. Therefore, it is less likely that moisture contained in the air will adhere on the outer surface of the tube. Accordingly, the formation of frost is restricted.Type: ApplicationFiled: July 11, 2003Publication date: February 26, 2004Inventors: Haruyuki Nishijima, Tomoo Honda, Kazuhisa Makida, Toshio Ueno
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Patent number: 6691774Abstract: A process for making a multilayer plastic tube heat exchanger with a ribbon of molten polymer being poured over layers of tubes, and then another layer of tubes being added and another ribbon of polymer. Heat exchanger structures so formed are also disclosed.Type: GrantFiled: September 20, 2002Date of Patent: February 17, 2004Assignee: E. I. du Pont de Nemours and CompanyInventor: Eldon Lawrence Fletcher
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Patent number: 6689481Abstract: An aluminum alloy heat exchanger resistive to impregnation of tobacco odor includes a base body of an aluminum alloy heat exchanger and an organic hydrophilic coating layer formed on the surface of the heat exchanger base body, and including a component (A) containing a chitosan compound selected from chitosan and derivatives thereof, and a component (B) containing a carboxylic compound having two or more carboxyl groups per molecule thereof, in a total solid amount of the components (A) and (B) of 20% by mass or more, based on the total amount by mass of the organic hydrophilic coating layer.Type: GrantFiled: November 7, 2001Date of Patent: February 10, 2004Assignees: Nihon Parkerizing Co., Ltd., Denso CorporationInventors: Kazunari Hamamura, Kengo Kobayashi, Hiroyoshi Sugawara, Osamu Kasebe, Kazuhisa Uchiyama
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Patent number: 6688110Abstract: Where gas turbine engine structure eg combustion equipment, is to be air impingement cooled, the surface which receives the air jets is so shaped as to produce boundary layer separation zones 34, 38 and 44 in the cooling air, as it spreads across the surface. Mixing of the boundary layer with the remainder of the air flow results, followed by the re-establishment of the boundary layer. The new boundary layer is cooler than the original layer and so provides more effective cooling.Type: GrantFiled: November 22, 2002Date of Patent: February 10, 2004Assignee: Rolls-Royce plcInventors: Geoffrey M. Dailey, Changmin Son
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Patent number: 6679317Abstract: In a cooling device for cooling a heat-generating member, a refrigerant tank includes a heat-receiving wall onto which the heat-generating member is attached in an attachment area, and a radiation wall opposite to the heat-receiving wall. A main wick is provided on an approximate entire inner surface of the heat-receiving wall, and an auxiliary wick is arranged opposite to at least a middle portion of an inner surface of the radiation wall within the attachment area. Condensation fins are provided to protrude from an inner surface of the radiation wall, and are separately arranged on both sides of the auxiliary wick. In the cooling device, the auxiliary wick is connected to the main wick and condensation fins.Type: GrantFiled: October 22, 2001Date of Patent: January 20, 2004Assignee: Denso CorporationInventors: Akihisa Kokubo, Tadayoshi Terao
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Patent number: 6675881Abstract: A method for forming a plurality of heat transfer fins on at least an inner surface of a conduit in a heat exchanger, the method comprising: forming a plurality of criss-crossing slots in at least a portion of the inner surface of the conduit, the plurality of slots defining the plurality of heat transfer fins therebetween.Type: GrantFiled: November 7, 2002Date of Patent: January 13, 2004Assignee: Pratt and Whitney Canada Corp.Inventor: Gluseppe Rago
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Publication number: 20040003619Abstract: The present invention relates to the methods for hydrophilization, capable of greatly improving the surface wettability of wet surface heat exchangers by transforming the solid surface to an improved surface having hydrophilic porous structure.Type: ApplicationFiled: July 8, 2003Publication date: January 8, 2004Inventors: Dae Young Lee, Jae Beom Byun
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Publication number: 20040000392Abstract: A radiator device has a heat conductive interface and a plurality of radiation fins. Each of the radiation fins which has a molecular polymeric form is made by a metal granular metallurgy.Type: ApplicationFiled: June 28, 2002Publication date: January 1, 2004Inventors: Jiunn-Liang Chen, Yu-Yu Kuo
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Patent number: 6667115Abstract: 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 0.7-2.0% Mn and 0.7-3.0% Zn, wherein the clad is capable of being used as an inner-liner of a heat exchanger product. In one embodiment, one side of the core alloy is provided with a material that comprises 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. There 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: January 16, 2002Date of Patent: December 23, 2003Assignee: Pechiney Rolled ProductsInventors: H. Scott Goodrich, Scott L. Palmer, Gregory R. Johnson, Zayna M. Connor
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Patent number: 6662860Abstract: In a heat transfer pipe, annular grooves in a direction inclined at an angle of 45° to 90° with respect to an axis of the pipe are continuously formed at an interval in a longitudinal direction of the pipe. The annular grooves desirably have a groove depth of 0.20 mm or more, and a groove pitch of two to five times larger than the groove depth. Moreover, a ratio W/P of a bottom width W of projections of the grooves to the groove pitch P is desirably 0.1 to 0.9.Type: GrantFiled: July 23, 2002Date of Patent: December 16, 2003Assignee: The Japan Steel Works, Ltd.Inventors: Takashi Iwamoto, Shinichi Ono, Yukio Sato, Masayuki Kawai, Yasushi Owaki, Masashi Tomiie, Shunroku Sukumoda, Kohtaroh Nagahara
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Patent number: 6659171Abstract: A hydrophilic modification method comprising a step of forming a coat having a solid coat amount of 0.02 to 3 g/m2 on a heat exchanger with a modifier for hydrophilicity after treatment for rust prevention thereof wherein said modifier for hydrophilicity comprises a modified polyvinyl alcohol (A) having, on a side chain thereof, a group represented by the formula (I): in the formula, n represents an integer of 1 to 500, R1 represents a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, and R2 represents a hydrogen atom or a methyl group, and at least one member (B) selected from the group consisting of phosphorus compound salts and boron compound salts of Ca, Al, Mg, Fe and Zn, said group represented by the formula (I) accounting for 0.01 to 20 mole percent relative to hydroxyl and acetoxy groups contained in said modified polyvinyl alcohol.Type: GrantFiled: March 26, 2002Date of Patent: December 9, 2003Assignees: Nippon Paint Co., Ltd., Denso CorporationInventors: Toshio Inbe, Susumu Maekawa, Akira Ushio, Koichi Saito, Norizumi Matsui, Osamu Kasebe, Kengo Kobayashi, Hiroyoshi Sugawara, Kazuhisa Uchiyama
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Patent number: 6655451Abstract: A heat transfer tube for a falling film type evaporator, in which water spreading characteristics, particularly the water spreading characteristics in the tube axis direction, enhancing the heat transfer ability. Three types of projections 2, 3, and 4 are formed on an external surface 1a of a heat transfer tube body 1. A respective plurality of projections 2 to 4 are arranged spirally in parallel to one another, forming projection groups 2a to 4a. The number of each projection group 2 to 4 is one. Pitches P2 to P4 for the projections 2 to 4 are in the range of 0.35 mm≦P4<P3<P2≦5.95 mm. Heights h2 to h4 of the projections 2 to 4 are in the range of 0.1 mm≦h4<h3<h2≦0.5 mm. Pitches for the projection groups 2a to 4a is in the range of 0.72 to 1.12 mm.Type: GrantFiled: June 11, 2002Date of Patent: December 2, 2003Assignee: Kobe Steel, Ltd.Inventors: Yoshio Tada, Chikara Saeki, Hiroyuki Takahashi
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Publication number: 20030217837Abstract: A heat transfer device includes a thermal superconducting body, which has a hollow heat transfer body and a heat transfer layer. The hollow heat transfer body is made of a heat conductive material and has a flat top portion and a flat bottom portion connected to the flat top portion and cooperating with the flat top portion to form a sealed vacuum receiving space therebetween. The heat transfer layer is made of a thermal superconductor material, is disposed in the vacuum receiving space, and forms a superconductor lining on an inner wall surface of the heat transfer body.Type: ApplicationFiled: July 31, 2002Publication date: November 27, 2003Inventor: Chin-Kuang Luo
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Publication number: 20030213586Abstract: The basis taken is a cooling element (1) made of a metal or of a metal alloy having at least one cooling rib (4) which is connected to a metal housing (11) for an operating means. The intention is to provide a cooling element (1) which has an improved cooling capacity. The inventive cooling element (1) is detachably connected to the housing (11) by means of fixing means. The cooling element (1) is provided with a thermally conductive and electrically insulating coating (2), and it has the same electrical potential as the housing (11), but carries no current.Type: ApplicationFiled: May 12, 2003Publication date: November 20, 2003Applicant: ABB Schweiz AG.Inventors: Markus Keller, Marianne Pleines, Jochen Kiefer, Thomas Schoenemann, Mercedes Dominguez Calvo
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Patent number: 6648066Abstract: A thermoplastic polymer film is directly extruded onto the heated surface of a metal condensing heat exchanger. Any thermoplastic polymer capable of being adhered to the metal surface of the condensing heat exchanger can be utilized. Preferably, the thermoplastic polymer is a polyester, a polyolefin with an added maleate or tackifier to ensure adhesion, polyetherimide, polyethersulfone, polysufone or polyimide. The thermoplastic film must be resistant to the conditions of the condensing heat exchanger, such as the high temperature flue vent gases and the acidic condensate formed from condensation.Type: GrantFiled: August 7, 2001Date of Patent: November 18, 2003Assignee: Carrier CorporationInventor: James William Otter
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Patent number: 6648061Abstract: A heating element is described for a regenerative heat exchanger that is constructed as a profiled steel sheet. The aim of the invention is to produce a heating element that is resistant to acids, has anti-soiling properties and, however, has a good thermal output. To these ends, the heating element is provided with an enameling, and a fluoroplastic coating is applied to the enameled surface.Type: GrantFiled: February 27, 2002Date of Patent: November 18, 2003Assignee: AlstomInventors: Hermann Müller-Odenwald, Friedrich Weyland
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Patent number: 6644388Abstract: A wrought aluminum sheet product having a textured surface for improved heat transfer properties. A plurality of textured features having dimensions of about 1-50 microns is roll textured onto one or both sides of the sheet. The aluminum sheet may be used as the fins or tubing of a heat exchanger.Type: GrantFiled: October 27, 2000Date of Patent: November 11, 2003Assignee: Alcoa Inc.Inventors: Raymond J. Kilmer, John B. Eye, Stephen F. Baumann, Michael P. Danz
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Patent number: 6640575Abstract: A closed circuit cooling tower for evaporative fluid cooler applications such as water-cooled residential and commercial air conditioning, geothermal cooling supplementation, and process cooling applications. Corrugated metal tubes are used for heat transfer to permit mechanical de-fouling, such as flexing the tubes. The cooling tower may operate at high dissolved solids, or gray water may be used in order to reduce water consumption. The cooling tower is lightweight and modular to permit retrofitting of existing rooftop air conditioning systems so that efficient evaporative cooling may be used to lower energy costs.Type: GrantFiled: February 1, 2002Date of Patent: November 4, 2003Inventor: Mac Word
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Publication number: 20030196782Abstract: Hot combustion products exchange heat with air in a heat exchanger of a condensing furnace. The hot combustion products flow on one side of the heat exchanger, and the air flows on the opposing side of the heat exchanger. The heat exchanger is electrochemically coated with a coating of copper metal. The copper coating is oxidized with an aqueous oxidizing alkaline solution to form a matte black layer of cupric oxide. As the layer of cupric oxide is black, the layer has a high emissivity and emits more heat, increasing the efficiency of the primary heat exchanger. Alternatively, iron can be electrochemically coated on the primary heat exchanger and oxidized to black magnetite to increase emissivity.Type: ApplicationFiled: May 28, 2003Publication date: October 23, 2003Inventor: James W. Otter
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Patent number: 6631758Abstract: A heat transfer tube (1) with a finned inner surface, which is divided into at least two zones (Z1 to Zm) in peripheral direction. The fins (2, 3), which 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: August 17, 2001Date of Patent: October 14, 2003Assignee: Wieland-Werke AGInventors: Christoph Walther, Rolf Wamsler
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Publication number: 20030188848Abstract: A complex heat-radiator including a heat conductor made of a material with high thermal conductivity such as copper, and a heat-radiating body made of a material with better heat-radiation efficiency than the heat conductor, such as aluminum. The heat-radiating body includes a heat-contacting board having a heat-contacting face overlaid on a heat source. Multiple projecting heat conductive fins are formed on the heat-contacting board. The heat-radiating body encloses and covers the heat conductive fins of the heat conductor. The heat generated by the heat source can be quickly conducted through the heat conductor with better thermal conductivity to the heat-radiating body. Then, the heat-radiating body with better heat-radiation efficiency quickly radiates the heat to outer side to be quickly dissipated.Type: ApplicationFiled: April 8, 2002Publication date: October 9, 2003Inventor: Yu-Chen Kuo
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Publication number: 20030183376Abstract: A heat exchanger assembly that includes a tube having an internal surface and an external surface. An aluminum-based component is disposed adjacent to the tube, the aluminum-based component has an aluminum-based material that has a magnesium content that is above 0.3%, wherein the aluminum-based component is joined to the tube using a brazing flux applied during a controlled atmosphere brazing process.Type: ApplicationFiled: April 2, 2002Publication date: October 2, 2003Inventors: Bradley David Abell, Jeff Scott Southwood, Timothy Van Evans
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Publication number: 20030178174Abstract: A sealed pouch constructed of thermally conductive flexible material containing a low melting point, thermally conductive material is placed between two components that require thermal continuity. This assembly is then loaded in compression and heated to the melting point of the low melting point, thermally conductive material, which then melts within the sealed pouch, and conforms to the shape of the two components. The sealed pouch also may contain a springy material made of a metal, or a solder compatible plastic or organic to help maintain shape of the pouch in some applications.Type: ApplicationFiled: March 21, 2002Publication date: September 25, 2003Inventors: Christian L. Belady, Eric C. Peterson, Brent A. Boudreaux, Shaun L. Harris, Roy M. Zeighami
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Publication number: 20030173071Abstract: Grooved metal tubes (1), of outer diameter De, the tubes being grooved internally with N helical ribs (2) of an apex angle &agr;, height H, base width LN and helical angle &bgr;, two consecutive ribs being separated by a flat-bottomed groove (3) of width LR, with a pitch P equal to LR+LN.Type: ApplicationFiled: April 12, 2002Publication date: September 18, 2003Inventors: Pascal Leterrible, Nicolas Avanan
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Patent number: 6619067Abstract: A cooling unit adapted for use in an auger type ice making machine, a freezing mechanism of an ice cream making machine or the like, composed of a metallic cylindrical evaporator housing and a metallic freezing pipe helically wound around the evaporator housing through a metallic filler for thermal contact with the evaporator housing, the metallic filler being embedded in a space between the evaporator housing and the freezing pipe, wherein the entirety of the freezing pipe is covered with a metallic surface layer membrane formed thereon.Type: GrantFiled: June 6, 2002Date of Patent: September 16, 2003Assignee: Hoshizaki Denki Kabushiki KaishaInventor: Shinya Hiramatsu
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Patent number: 6620969Abstract: A shell-and-tube heat exchanger for handling an easily polymerizable substance is disclosed, which is characterized by having no part for stagnation of said process fluid on the surfaces for contact with the process fluid. By eliminating undulations from the inner surfaces of the heat transfer tubes, it is made possible to prevent the easily polymerizable substance from polymerizing and, at the same time, prevent adhesion of a polymer to the surfaces. Thus, the efficiency of heat exchange is enhanced and the protracted continuous operation is realized.Type: GrantFiled: March 8, 2000Date of Patent: September 16, 2003Assignee: Nippon Shokubai Co. , Ltd.Inventors: Takeshi Nishimura, Yukihiro Matsumoto
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Publication number: 20030168209Abstract: A heat transfer tube (1) having a ribbed inner surface which is divided into at least two zones (Z1, Z2, . . . , Zn) in circumferential direction, which zones are classified into at least two zone classes (K1, K2, . . . , Kj+1, . . . , Km). Ribs (1) having a rib height h1 extend at a helix angle &agr;1 with respect to the longitudinal direction of the tube in the zones of at least one zone class (K1, K2, . . . , Kj). Ribs (2) having a rib height h2 extend at a helix angle &agr;2 in the zones of at least one further zone class (Kj+1, Kj+2, . . . , Km), which ribs (2) are intersected by ribs (3) having a rib height h3 extending at a helix angle &agr;3 (&agr;3≠&agr;2). Preferably are h2, h3≦h1.Type: ApplicationFiled: March 6, 2003Publication date: September 11, 2003Inventor: Christoph Walther
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Patent number: 6615913Abstract: The invention relates to a method of fabricating a pyrometallurgical reactor cooling element with flow channels. In order to enhance heat transfer capability, the wall surface area of the flow channel, which is traditionally round in cross-section, is increased without increasing the diameter or length of the channel.Type: GrantFiled: June 15, 2001Date of Patent: September 9, 2003Inventors: Eero Hugg, Ilkka Kojo, Pertti Mäkinen, Raimo Koota
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Publication number: 20030150600Abstract: An aluminum alloy heat exchanger having excellent hydrophilicity and resistance to absorption or impregnation of tobacco odorous components has an organic hydrophilic coating layer formed on at least a portion of a base body of the heat exchanger and containing (A) at least one chitosan compound, (B) at least one two or more carboxyl group-containing organic compound and (C) at least one hydrophilic polymeric substance different from the components (A) and (B), in which the total solid content of components (A) and (B) is 20 mass % or more and the solid content of component (C) is 0.1 to 10 mass %.Type: ApplicationFiled: January 2, 2003Publication date: August 14, 2003Inventors: Kazunari Hamamura, Kengo Kobayashi, Hiroyoshi Sugawara, Osamu Kasebe, Kazuhisa Uchiyama
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Patent number: 6604572Abstract: A pipeline device which includes a metal pipe to be disposed on or connected to an appliance in a state wherein an outer periphery of the metal pipe is exposed to air or in contact with moisture or a corrosive gas, in which a refrigerant of a temperature lower than the temperature of the outside flows, and a corrosionproof coating containing a powdery material of a metal or a metal salt, coated on the outer periphery of the metal pipe.Type: GrantFiled: October 13, 1999Date of Patent: August 12, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Takao Kawamoto
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Publication number: 20030140632Abstract: Where gas turbine engine structure eg combustion equipment, is to be air impingement cooled, the surface which receives the air jets is so shaped as to produce boundary layer separation zones 34, 38 and 44 in the cooling air, as it spreads across the surface. Mixing of the boundary layer with the remainder of the air flow results, followed by the re-establishment of the boundary layer. The new boundary layer is cooler than the original layer and so provides more effective cooling.Type: ApplicationFiled: November 22, 2002Publication date: July 31, 2003Applicant: ROLLS-ROYCE PLCInventors: Geoffrey M. Dailey, Changmin Son
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Patent number: 6595271Abstract: A heat exchanger made of aluminum includes a plurality of first plates and a plurality of second plates stacked alternately in the direction along the thickness thereof. The first plates and the second plates each constitute a three-layer structure. A first sacrificing material layer is clad on the side surface of a first core member making up each of the first plates nearer to a cooling water path and a second sacrificing material layer is clad on the side surface of a second core member making up each of the second plates nearer to the cooling water path. A first brazing material layer is clad on the side surface of the first core member nearer to an oil path, and a second brazing material layer is clad on the side surface of the second core member nearer to the oil path.Type: GrantFiled: October 22, 2001Date of Patent: July 22, 2003Assignee: Denso CorporationInventor: Shuji Komoda
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Publication number: 20030131975Abstract: 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: January 11, 2002Publication date: July 17, 2003Inventors: Sabina Houle, Ashay Dani
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Publication number: 20030111215Abstract: A heat transfer tube (1) with a finned inner surface, which is divided into at least two zones (Z1 to Zm) in peripheral direction. The fins (2, 3), which 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: ApplicationFiled: August 17, 2001Publication date: June 19, 2003Inventors: Christoph Walther, Rolf Wamsler
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Patent number: 6578628Abstract: An article comprised of dissimilar metals in contact with one another wherein the exposed surface of the more noble metal is coated with a metal more galvanically compatible with the less noble metal. The article exhibits increased resistance to galvanic corrosion.Type: GrantFiled: October 21, 1996Date of Patent: June 17, 2003Assignee: Carrier CorporationInventor: Thomas J. Garosshen
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Publication number: 20030106675Abstract: An article having a first member formed from a first metal and a second member connected with the first member at a contact area. The second member is formed from a second metal having high reduction reaction kinetics and galvanic corrosion driving force relative the first member, wherein the second metal is more noble than the first metal. A material for substantially eliminating the galvanic corrosion problem by reducing the reduction reaction kinetics of the second metal in the presence of an electrolyte is provided between the first and second metals. In a preferred embodiment, the article is a heat exchanger wherein the first member is a fin collar and the second member a tube and the material for reducing is a coating on the tube has low reduction reaction kinetics relative to copper for reducing corrosion activities between the tube and fin collar.Type: ApplicationFiled: December 4, 2001Publication date: June 12, 2003Inventors: Sandra J. Downey, Daniel P. Gaffaney, Thomas J. Garosshen
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Publication number: 20030106674Abstract: 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: ApplicationFiled: December 10, 2001Publication date: June 12, 2003Inventor: Ming-Jen Huang
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Publication number: 20030106676Abstract: A corrosion-resistant, copper-finned heat exchanger for a water heater is provided. The heat exchanger includes a conduit through which water runs, heat-transfer fins extending from the conduit and an anti-corrosive coating containing electroless nickel. The heat-transfer fins contain copper, and the coating is deposited directly onto at least one of the copper heat-transfer fins.Type: ApplicationFiled: January 21, 2003Publication date: June 12, 2003Applicant: AOS Holding CompanyInventors: Charles J. Bishop, Ming C. Kuo
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Patent number: 6571864Abstract: Fin material for a heat exchanger, which comprises: a fin material; a water-based resin paint coated on said fin material surface; a hydrophilic coated on said paint coating; and, antibacterial and antifungal powders fixed by said hydrophilic coating and paint coating, wherein the half or less portion of respective powders are exposed to the outside of the hydrophilic coated film so that the properties of said powders can be retained for a sustained period of time and heat exchanger for air conditioner provided therewith.Type: GrantFiled: April 28, 1999Date of Patent: June 3, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Baeg Yoon, Hyun-yeon Park, Young-saeng Kim, Hwan-young Park
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Patent number: 6571865Abstract: The present invention relates to a heat transfer surface comprising a layer of carbon, to a heating element or condenser comprising said heat transfer surface, to a method of applying said heat transfer surface, and to a method for carrying out dropwise condensation employing said heat transfer surface. The carbon layer employed in the present invention is tetrahedral amorphous carbon and/or diamond-like carbon. In addition, the carbon layer may be a composite (eg. an alloy) of the above carbon sources with another component such as nickel, chromium or Teflon®. The heat transfer surface of the present invention permits dropwise condensation rather than film wise condensation to proceed. The surface also exhibits improved resistance to fouling such as scale build-up caused by hard water. The heat transfer surface of the present invention has particular application in kettles, washing machines, dishwashers and condensers.Type: GrantFiled: June 18, 1999Date of Patent: June 3, 2003Assignee: Nanyang Technological UniversityInventors: Xu Shi, Hong Siang Tan
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Publication number: 20030098145Abstract: The heat exchanger according to the present invention includes a heat exchanger component in which a fluoride layer 10 is formed at the surface layer portion. It is preferable that the fluoride layer 10 falls within the range of from 2 nm to 10 &mgr;m in thickness. It is preferable that the component is at least one of a fin and a plate. Furthermore, it is preferable that the fluoride layer 10 is formed on a substrate via an intermediate layer 2. It is preferable that the intermediate layer 2 includes an anodized oxide layer 3 and/or a nickel plated layer 4. The heat exchanger is excellent in corrosion resistance against water, vapor and the like The heat exchanger is preferably used, especially, for a fuel cell.Type: ApplicationFiled: October 25, 2002Publication date: May 29, 2003Applicant: SHOWA DENKO K.K.Inventors: Kiyoshi Tada, Yoshitaka Ohira, Tadashi Usui, Yoshinori Nakata, Shintaro Nakagawa, Nobuhiro Wakabayashi, Tadao Ohashi
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Patent number: 6568465Abstract: A heat exchanger/evaporator for transferring heat from a first heat exchange fluid to a liquid to be evaporated into a gaseous second heat exchange fluid that includes a thermally conductive element 30 separating a first flow path 34 for the first heat exchange fluid and a second flow path 36 for the second heat exchange fluid. A first surface is on the element 30 in heat exchange relation with the first flow path 34 and a second surface is on the element 30 opposite the first surface and is in heat exchange relation with the second flow path 36. A hydrophilic coating 50 is bonded on part of the second surface and includes a powder of nominally spherically shaped particles including nickel, chromium, aluminum, cobalt and yttrium oxide bonded together with a braze metal predominantly made up of nickel, chromium and silicon and diffused into the nominally spherically shaped particles and the second surface.Type: GrantFiled: May 7, 2002Date of Patent: May 27, 2003Assignee: Modine Manufacturing CompanyInventors: Alan P. Meissner, Richard G. Parkhill
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Publication number: 20030094272Abstract: The invention relates to a heat-exchanger tube structured on both sides with excellent heat transfer characteristics utilizing both outer and also inner fins and secondary grooves intersecting the inner fins. Two spaced-apart rolling tools are provided in the utilized device in order to form the outer fins of two adjacent rolling tools; the inner structure is formed by two differently profiled mandrels. The first mandrel forms in a first forming area the inner fins. The second mandrel forms in a second forming area the inventive secondary grooves into the earlier created inner fins.Type: ApplicationFiled: November 15, 2002Publication date: May 22, 2003Inventors: Karine Brand, Andreas Knoepfler, Andreas Beutler, Ronald Lutz
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Publication number: 20030094264Abstract: 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: ApplicationFiled: September 26, 2002Publication date: May 22, 2003Inventor: Kevin Bergevin