With Means Spacing Fins On Structure Patents (Class 165/182)
  • Publication number: 20040251016
    Abstract: Disclosed is a heat exchanger including a plurality of tubes through which refrigerants flow, the tubes being spaced away from each other, and a plurality of fins through which the tubes are perpendicularly inserted, the fins being spaced away from each other at a predetermined distance, each of the fin having more than four peak portions and more than four valley portions that are alternately disposed. Heights or depths of at least two peak portions or at least two valley portions being different from each other.
    Type: Application
    Filed: January 13, 2004
    Publication date: December 16, 2004
    Inventors: Sai Kee Oh, Cheol Soo Ko, Dong Yeon Jang, Yong Cheol Sa, Se Yoon Oh, Baik Young Chung
  • Patent number: 6823932
    Abstract: The added expense of providing fixtures for holding side pieces in heat exchangers in place during assembly is avoided in a heat exchanger having a core with at least one row of spaced, parallel, straight runs (12-20); (70-86) of flattened tubing (10) which includes first and last spaced side runs (12), (20); (70), (92) which define an associated side on opposite sides of the row. Fins (36), (62) bridge the spacing between each of the plurality of runs and extend oppositely from outwardly facing sides (42), (44); of the first and last runs (12), (20); (70), (92); and are bonded to the tubing (10). A pair of side pieces (46), one for each side of the row, are provided and are hooked on the associated ends of the first and last runs (12), (20); (70), (92). The side pieces (46) are self-fixturing by reason of being hooked on the tubing.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: November 30, 2004
    Assignee: Modine Manufacturing Company
    Inventor: Donald F. Birkholz
  • Publication number: 20040200609
    Abstract: A heat sink includes multiple heat dissipating fins each with two opposite side walls. Multiple micro bosses are formed on a periphery of the heat dissipating fin. Each heat dissipating fin is securely connected to an adjacent heat dissipating fin via secure engagement between the side walls and a bottom face of the adjacent heat dissipating fin. Each micro boss is in the order between 10−6 to 10−9 mm so that laminar effect to decrease heat dissipating capability of the heat sink is avoided.
    Type: Application
    Filed: April 8, 2003
    Publication date: October 14, 2004
    Inventor: Vincent Chen
  • Patent number: 6802362
    Abstract: An assembly includes a heat pipe and one or more fins. The heat pipe has an envelope with two elongated flat sides and two curved portions connecting the flat sides. The elongated sides have a length that is substantially greater than the radius of curvature of the curved portions. Each fin comprises a plate. The plate has a hole through it. The hole is sized to accommodate the envelope. The hole has two elongated flat sides and two curved portions connecting the flat sides. The elongated sides have a length that is substantially greater than a radius of curvature of the curved portions. The plate has at least one collar portion adjacent to the hole. The collar portion extends approximately in a direction normal to the plate. The collar portion is sized so as to accommodate the method of attachment of the fin to the envelope.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: October 12, 2004
    Assignee: Thermal Corp.
    Inventors: Todd Michael Wenger, David B. Sarraf
  • Patent number: 6789614
    Abstract: A heat exchanger is provided for a refrigerator and includes one or more refrigerant tubes for refrigerant flow, and a plurality of straight fins having lengths different from each other fitted to the refrigerant tubes at fixed intervals in parallel to each other by means of through holes formed therein. The heat exchanger includes sections having different intervals or spaces between fins, wherein sections with the smallest fin spaces have a size 75% or less of a total size of the heat exchanger.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: September 14, 2004
    Assignee: LG Electronics Inc.
    Inventors: Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Seong Hai Jeong, Young Hwan Ko, Young Jeong, Sam Chul Ha
  • Publication number: 20040168456
    Abstract: A refrigerated merchandiser (100) includes an upright, open-front, insulated cabinet (110) defining a product display area (125) connected in airflow communication with a compartment (120) via an air circulation circuit (122, 114, 116). The flow of refrigerant through the coils (46) of evaporator (40) disposed in the compartment (120) to cool the airflow from the product display area of the refrigerated merchandiser.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 2, 2004
    Inventors: Robert Hong Leung Chiang, Eugene Duane Daddis, Kwok Kwong Fung
  • Patent number: 6769196
    Abstract: A condenser of a condensing-type clothes dryer includes a plurality of condensing ducts provided in a middle portion of a circulation duct, the condensing ducts condensing air being circulated there-through after being discharged from a drum; and a plurality of cooling fins provided to be in contact with an outer surface of the condensing ducts, wherein an interval or a pitch of the cooling fins is different partially according to a flow rate of air blown from a cooling fan for a heat-exchange with air flowing through the condensing duct. At this time, the pitch or interval of the cooling fins is narrow at a portion where air blown from the cooling fan flows fast, and the pitch or internal of the cooling fins is wide at a portion where air blown from the cooling fan flows slowly.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: August 3, 2004
    Assignee: LG Electronics Inc.
    Inventors: Young Hwan Park, Choon Myun Chung, Mu Yong Choi, Dae Yun Park, Kyung Seop Hong
  • Publication number: 20040108104
    Abstract: An axial heat-dissipating device includes a heat-dissipating unit and a fan unit. The heat-dissipating unit includes an upright heat-transfer member having a lower end adapted to be disposed on a heat-generating source, a plurality of angularly spaced apart heat-dissipating fins provided on the heat-transfer member, and a hollow shell body that is disposed to surround the heat-dissipating fins. The shell body has a top end portion and a lower end portion which is formed with at least one radial air inlet that permits flow of air into the shell body. The fan unit is mounted on the top end portion of the shell body, and is operable so as to draw hot air out of the shell body.
    Type: Application
    Filed: March 24, 2003
    Publication date: June 10, 2004
    Inventor: Chin-Kuang Luo
  • Patent number: 6741468
    Abstract: A heat dissipating assembly (1) includes a plurality of fins (10), three heat pipes (20), and a base (30). Each fin defines three through holes (11) across a middle portion thereof. A plurality of dome-shaped protruding portions (14) is formed in each fin. The protruding portions are arranged in a regular array of offset rows. Adjacent protruding portions in any row protrude from front and rear faces of the fin in a regular alternating configuration. One end of each heat pipe is respectively inserted into the corresponding through holes of the fins, and an opposite end of each heat pipe is attached in the base. The base is attached on an electronic device, for absorbing heat produced by the electronic device. The protruding portions increase a heat dissipating surface area of the fins, and deflect airflow that passes across the fins in a direction parallel to the fins.
    Type: Grant
    Filed: August 31, 2002
    Date of Patent: May 25, 2004
    Assignee: Hon Hai Precision Ind. Co., Ltd.
    Inventors: Cheng-Du Jing, Ching Huan Lin
  • Patent number: 6712128
    Abstract: An air flow apparatus including an elongate post and a plurality of fin disks disposed on the elongate post, each fin disk including a centrally disposed opening therein for receiving the elongate post, and a plurality of flow openings disposed around the periphery of the centrally disposed opening. The air flow apparatus is preferably used in conjunction with a circulation device to form a heat exchanger.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: March 30, 2004
    Assignee: Thermal Corp.
    Inventors: Peter M. Dussinger, David Sarraf
  • Publication number: 20040026073
    Abstract: A heat sink includes a plurality of spaced laminas made of a thermally conductive material. Each of the laminas is integrally formed with a pair of convexo-concave spacers that each project from a first face of the lamina and define a cavity in a second face of the same lamina. Furthermore, each of the convexo-concave spacers is adapted to be partially and tightly fitted in a mating cavity of the next lamina.
    Type: Application
    Filed: August 9, 2002
    Publication date: February 12, 2004
    Applicant: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Horng Alex, Yin-Rong Hong, Ching-Sheng Horng
  • Publication number: 20030230396
    Abstract: A pivot assembly for the damper vane of a hot water baseboard heater has a base which slides into the channels of the damper vane and a projection which snaps into a hole on a respective support bracket of the baseboard so that fingers of the projection spread on one side of the bracket while a pair of resilient arms are braced against the other side.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 18, 2003
    Applicant: SLANT/FIN CORPORATION
    Inventors: George Weintraub, Stephen Pulaski
  • Publication number: 20030213588
    Abstract: The invention concerns a corrugated heat exchanger element (1) that can be produced from a metal strip and has a corrugation height (h) that lies between the crests (2) of the corrugations, in which the crests (2) form a first and second plane, consisting of several crests (2), at least some of the crests (2) of each plane being connected to the heat exchanger walls (3), and in which each crest (2) of the first plane is connected to the following crest (2) of the second plane by means of flanks (4), and a flow channel (20) is formed between adjacent flanks (4); structures (5), whose direction of alignment (15) in one flank (4) intersects the direction of alignment (15) in the following flank (4), are situated in the flanks (4).
    Type: Application
    Filed: April 28, 2003
    Publication date: November 20, 2003
    Inventor: Jens Nies
  • Patent number: 6640888
    Abstract: A heat sink includes a plurality of spaced fins made of a thermally conductive material. Each of the fins has a through-hole surrounded by an annular wall. The annular wall is additionally provided with an axial slot which has a front end at a certain distance from a distal end of the annular wall and which extends to the related fin to form an aperture therein. A heat-conductive rod is inserted in the through-holes of the fins and fitted in the annular walls. Moreover, a bar is inserted in the apertures in the fins. The bar is made of low melting material so as to join the fins to the heat-conductive rod after the bar has been melt and then hardened.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: November 4, 2003
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Yin-Rong Hong, Ching-Sheng Hong
  • Publication number: 20030188852
    Abstract: An object of the present invention is to provide a heat exchanging fin capable of preventing cracks from forming in the flares of the collared tube holes, even if the metallic plate section is made of the thin and tough material. In the heat exchanging fin, a metallic plate section has a plurality of tube holes. A plurality of collars are respectively extended from edges of the tube holes. A plurality of flares are respectively formed at front ends of the collars. Each flare includes a plurality of radially extended sections, which are radially outwardly extended from the front end of each collar, and separation between the metallic plate section and each radially extended section is fixed.
    Type: Application
    Filed: September 18, 1998
    Publication date: October 9, 2003
    Inventor: MAMORU YAMADA
  • Publication number: 20030150601
    Abstract: The present invention discloses a heat exchanger fin having three rows of slit parts being arranged at the air inlet side and another three rows at the air outlet side relative to the centerline of heat transfer pipes 102, in order to reduce the ventilating resistance, prevent the growth of a boundary layer and reduce a dead zone on the downstream of the heat transfer pipes 102 to thus increase heat transfer performance. The outer slit parts 111 and 111′; and 116 and 116′ at the air inlet side and at the air outlet side are formed in pairs. The middle slit parts 112 and 112′ at the air inlet side are formed in pairs and the middle slit part 114 at the air outlet side is formed in a unit. The inner slit parts 113 and 114 at the air inlet side and at the air outlet side are also formed in a unit.
    Type: Application
    Filed: December 12, 2002
    Publication date: August 14, 2003
    Applicant: Mando Climate Control Corporation
    Inventors: In-kyu Park, Hyun-joo Choi, Woo-hyun Kim
  • Publication number: 20030070797
    Abstract: A widthwise one half portion of a core section 5a is constituted by a first section 20 formed by stacking a plurality of first elements having first and second linear channels 34 and 35 inside them and fins, and a widthwise other half portion thereof is similarly constituted by a second section 21 formed by stacking a plurality of second elements respectively having U-shaped channels 46 inside them and fins. The number of times the refrigerant fed into a thicknesswise one half portion on an inlet tank 47 side of the first section 20 is turned back in an opposite direction concerning a longitudinal direction of the first linear channels 34 inside this thicknesswise one half portion is made more numerous than the number of times the refrigerant fed into a thicknesswise other half portion on an outlet tank 52 side of the first section 20 is turned back in the opposite direction concerning the longitudinal direction of the second linear channels 35 inside this thicknesswise other half portion.
    Type: Application
    Filed: September 26, 2001
    Publication date: April 17, 2003
    Applicant: CALSONIC KANSEI CORPORATION
    Inventors: Mitsunari Narahara, Yoshihiro Sasaki, Kazuhiro Kojima, Toru Asanuma, Yoshiaki Koga
  • Patent number: 6543527
    Abstract: A metallic cooling fin for a motor vehicle heat exchanger has a central part having at least one set of fixed inclined lamellae, of selected form and spaced apart by apertures, the dimensions of which are predetermined to enable a fluid to pass between the lamellae. The lamellae in a common set are distributed in at least two groups, with the respective inclinations of the lamellae varying from one group to the other.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: April 8, 2003
    Assignee: Valeo Thermique Moteur
    Inventors: Samy Bouzida, Christophe Mignot, Mike V. Powers
  • Publication number: 20030034155
    Abstract: A method of making an evaporator and the resultant evaporator. The resultant evaporator comprises a continuous serpentine tube having an inlet and an outlet. The serpentine tube includes at least one column of parallel tube runs. Each tube run is defined by at least one reverse bend. The column of parallel tube runs has an overall length defined by the distance between the outermost tube runs. The evaporator further comprises a plurality of inner fins attached to the individual tubes. Each inner fin extends between two tube runs defined by opposite ends of a reverse bend. The inner fins have a length less than the overall length the column of tube runs.
    Type: Application
    Filed: February 20, 2001
    Publication date: February 20, 2003
    Applicant: TI Group Automotive Systems Corp.
    Inventors: Scot Reagen, Jeff Sensmeier
  • Publication number: 20030024687
    Abstract: A radiation fin set comprising a plurality of metallic radiation fins arranged in parallel for direct welding/bonding to a beat dissipation base panel or mounting on a heat dissipation tube at the heat dissipation base panel, the radiation fins each having a plurality of elongated slots and a plurality of flanges respectively extended along one side of each of the elongated slots and sloping in one direction at an angle of slope for guiding the flow of air of high momentum into mixing with the flow of air of low momentum to repress the formation of boundary layer and to improve heat dissipation efficiency of the radiation fins.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 6, 2003
    Inventors: Chung Pin Cheng, Jimmy Wu, Eric Chung
  • Patent number: 6513587
    Abstract: A heat exchanger fin collar for a plate-fin heat exchanger having close tolerance dimensions for achieving greater contact area on the tube. The fin collar comprises an elongated fin portion for dissipating heat and a leg connected with the fin portion. The leg has a height and includes a straight contact portion substantially perpendicular to the fin portion, wherein the contact portion has a contact height along which the contact portion contacts the tube. The height is in the range of 0.008 to 0.080 inches. It also includes a first curved end portion having a first radius extending from a first end of the contact portion and a stepped transitional portion connecting the contact portion and the elongated fin portion. The transitional portion has a second curved end portion having a second radius, wherein the second curved end portion extends from the contact portion opposite the first end. A method for forming the fin collar and a heat exchanger are also disclosed.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: February 4, 2003
    Assignee: Carrier Corporation
    Inventors: Amer F. Ali, Michael P. McCabe, Daniel P. Gaffaney
  • Patent number: 6491091
    Abstract: A radiating fin assembly for thermal energy engine comprises a plurality of spacer members each having a plurality of insertion holes, a plurality of radiating plates each sandwiched between two adjacent spacer members and each having a plurality of insertion holes, and a plurality of insertion pins passing through corresponding insertion holes of the spacer members and corresponding insertion holes of the radiating plates to assemble the spacer members with the radiating plates. The spacer members and the radiating plates further have central circular apertures and the radiating fin assembly reduces a temperature of a hot body when the hot body is arranged within the central circular apertures.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: December 10, 2002
    Assignees: Polo Technology Corp.
    Inventors: Pao Lung Lin, Chun-Hsiung Han
  • Patent number: 6478079
    Abstract: A recess portion for setting an attachment position is formed in each plate fin at positions adjacent to both longitudinal ends of the plate fins on both upstream and downstream ends in an air flowing direction. Therefore, air passing through the plate fins is disturbed by a standing wall portion of the recess portion around the longitudinal ends of the plate fins. Thus, it can prevent a thermal boundary layer from being expanded in a heat exchanger having the plate fin, and heat-transmission efficiency can be improved in the heat exchanger. As a result, an entire area of the plate fin can be effectively used, thereby improving heat-exchanging capacity of the heat exchanger.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: November 12, 2002
    Assignees: Denso Corporation, Hidaka Seiki Kabushiki Kaisha
    Inventors: Seiichi Kato, Hisashi Nakashima, Akio Ueda, Masakazu Hyodo, Fumio Moriyama
  • Publication number: 20020117295
    Abstract: A heat dissipating structure includes a heat dissipating element which has an upper flange and a lower flange formed respectively at the upper and lower edges thereof, and a convection zone located between the upper and lower flanges. The upper flange has two ends each has a fastening section. The lower flange has one fastening section at the center, two ends extended downwards to form respectively a fastening foot and form an indented zone with the lower flange. Two or more heat dissipating elements may be stacked and engaged through the fastening section to form an assembled element. Two assembled elements may be juxtaposed and bonded at the fastening foot to form a housing chamber therebetween to house a heat dissipating tube thereby to dissipate heat rapidly.
    Type: Application
    Filed: February 26, 2001
    Publication date: August 29, 2002
    Inventor: Ching-Hang Shen
  • Patent number: 6435272
    Abstract: An exhaust gas cooling system for a vehicle includes a cooling fin system retrofit and a side exhaust pipe retrofit having an exhaust gas exit pipe having a first portion having a plurality of mixing portions which are either bends or internal mixing fins configured to mix vehicle exhaust gas, but not to restrict exhaust gas flow, a second portion fastened to the first portion and a chrome coated third portion fastened to the second portion and extending along the side of the vehicle. The cooling fin system retrofit includes an adjustable clamp and one or more cooling fins, each cooling fin having a base having a pair of upstanding arms, with one arm of the pair having a lip for engaging an arm of another cooling fin. An exhaust gas cooling system kit, a side exhaust pipe retrofit kit, a cooling fin kit are included.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: August 20, 2002
    Inventor: Randy E. Voss
  • Publication number: 20020088613
    Abstract: Heat exchange unit for pseudo-isothermal reactors including a substantially cylindrical shell (2) closed at its opposite ends by respective bottoms (3, 4), at least one thereof is provided with at least one manhole opening (5) of predetermined dimensions, a reaction zone (6) inside the shell (2) in order to contain a catalytic bed, comprising at least two modular and assembly heat exchangers (11), having predetermined cross dimensions smaller than those of the manhole opening (5), each heat exchanger (11) comprising at least one heat exchange element (12).
    Type: Application
    Filed: January 4, 2002
    Publication date: July 11, 2002
    Applicant: METHANOL CASALE S.A.
    Inventors: Ermanno Filippi, Enrico Rizzi, Mirco Tarozzo
  • Patent number: 6415854
    Abstract: The invention relates to a heat exchanger unit to be used in a gas-fired water heater in which heater a heat exchanger unit contains tubes with fins. According to the invention the heat exchanger unit contains flat oval tubes (1,21,31) having a fin (3,22,32) at least on one flat part (4,24,33). The flat oval tubes (1,21,31) as well as the fins (3,22,32) are made of copper, copper-based alloy, aluminium or aluminium-based alloy.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: July 9, 2002
    Assignee: Outokumpu Oyj
    Inventors: Anders Falkenö, Per Sandberg
  • Patent number: 6397939
    Abstract: Problems due to fin fall-out in the manufacture of heat exchangers having flattened tubes (14) with interposed serpentine fins (16) are eliminated by providing the exterior sides (22), (24) of the tube (14) with elongated, relatively sharp ridges (36). The ridges (36) form deformations (52) in the crests of the fins (16) which lock the fins (16) and the tubes (14) together during the brazing process, thereby preventing such fall-out.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: June 4, 2002
    Assignee: Modine Manufacturing Company
    Inventors: J. Darin Swiger, Andrew J. De Rosia
  • Patent number: 6377219
    Abstract: A net-shape molded composite heat exchanger is provided which includes a plurality of thermally conductive fins overmolded onto one end of a metallic heat pipe for use both as an antenna in a cellular telephone and a heat exchanger to dissipate the heat generated within the device. The heat exchanger is formed by net-shape molding the fins over one end of the heat pipe, from a thermally conductive composition, such as a polymer composition. The molded heat exchanger is freely convecting through the part, which makes it more efficient and has an optimal thermal configuration. In addition, the metallic heat pipe serves the additional function of conducting radio frequency waves to and from the cellular telephone device.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: April 23, 2002
    Assignee: Cool Options, Inc.
    Inventor: Lyle James Smith
  • Patent number: 6329075
    Abstract: An aluminum alloy composite material includes a higher strength aluminum alloy core material layer and at least one cladding aluminum alloy material layer having a higher electrical conductivity than the core material. The cladding layer is positioned adjacent to the core and the composite is adapted for particular application in heat exchangers where brazing is conducted under controlled atmospheres with special flux materials. The core material has an electrical conductivity less than 50% IACS and the cladding layer has an electrical conductivity greater than 50% IACS. The cladding layer can be on one or both surfaces of the core layer. The thickness of the cladding layer can range between about 2.5 and 40% of the overall composite thickness depending on whether one or more cladding layers are employed. The cladding layer also has a corrosion potential more negative than the core layer for enhanced corrosion resistance.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: December 11, 2001
    Assignee: Reycan, L.P.
    Inventors: Ralph M. Nener, Scott W. Haller
  • Patent number: 6325140
    Abstract: Fin tube heat exchanger including heat exchange tubes each having an inside for flow of fluid therethrough, and sheets of cooling fins stacked at fixed intervals each having the heat exchange tubes passed therethrough in a row pitch L2, a direction along an air flow, in a range of 1.8 D0≦L2≦2.2 D0and in a step pitch S2, a direction perpendicular to the air flow, in a range of 3.3 D0≦S2≦4.5 D0, where D0denotes a diameter of the heat exchange tube, and projection pieces between the tubes opened for the air flow, thereby reducing a power consumption, noise, to improve reliability of the user, and saving production cost and making the heat exchanger compact.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: December 4, 2001
    Assignee: LG Electronics Inc.
    Inventors: Byeong Chul Na, Dae Hyun Jin
  • Patent number: 6321833
    Abstract: A fin and tube heat exchanger includes fins shaped along dynamically, empirically determined isothermal lines. The fins preferably have deflectors along a trailing edge thereof to concentrate heat flux into a back row of tubes. The deflectors bridge adjacent fins to define baffles. The preferred fin shape may be obtained empirically by trimming fin areas exhibiting excessive temperatures during operation.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: November 27, 2001
    Assignee: H-Tech, Inc.
    Inventors: Timothy O'Leary, David L. Schardt, Brady A. Mills, Vance Willis
  • Publication number: 20010042615
    Abstract: A heat sink structure having a pipe attached to a plurality of fins for dissipating heat into an environment. Each fin in the plurality is constructed of a thermally conductive material and has a cavity formed therein dimensioned for seating about the pipe exterior surface. An opening or notch extends from the edge of each of the fins to the cavity to facilitate the spread of an adhesive or solder to the fin/pipe interface for providing thermal and physical coupling of the plurality of fins to the pipe.
    Type: Application
    Filed: April 16, 2001
    Publication date: November 22, 2001
    Applicant: Aavid Thermalloy, LLC
    Inventors: Marvin F. Moore, David W. Gailus, Che M. Cheung
  • Publication number: 20010037875
    Abstract: A stackable heat sink having a core shaft in heat-engaging relation with a semiconductor device and a plurality of individual thin fins having an opening for receiving the core shaft in press fit relation so that a plurality of the fins, when mounted on the shaft, define a plurality of air passageways and the fins and shaft efficiently transfer heat away from the semiconductor device and into the surrounding atmosphere. In an improved version of the heat sink, the heat-dissipating fins may be corrugated so as to increase the surface area of each individual fin without increasing its perimeter. A heat pipe may be used in conjunction with the core shaft or base of the heat sink so as to facilitate heat transfer away from the electronic component. An improved heat sink may also include a base having a plurality of openings and a small fan connected to the portion of the base with the openings, so as to direct air across and between adjacent fins.
    Type: Application
    Filed: August 3, 1999
    Publication date: November 8, 2001
    Applicant: Andrea L. Mays
    Inventor: FRED GUERRERO
  • Patent number: 6253839
    Abstract: A method of making an evaporator and the resultant evaporator. The resultant evaporator comprises a continuous serpentine tube having an inlet and an outlet. The serpentine tube includes at least one column of parallel tube runs. Each tube run is defined by at least one reverse bend. The column of parallel tube runs has an overall length defined by the distance between the outermost tube runs. The evaporator further comprises a plurality of inner fins attached to the individual tubes. Each inner fin extends between two tube runs defined by opposite ends of a reverse bend. The inner fins have a length less than the overall length the column of tube runs.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: July 3, 2001
    Assignee: TI Group Automotive Systems Corp.
    Inventors: Scot Reagen, Jeff Sensmeier
  • Patent number: 6215239
    Abstract: A cathode ray tube includes a deflection unit (11) having a cooling fin (25) which is attached to the surface of a tapering surface on a yoke ring (23) by lugs (27). At least one of the lugs has a free end extending axially and outwardly in thermal contact with the tapering surface, and at least another of the lugs has a free end extending axially in an opposite direction and inwardly in thermal contact with the tapering surface.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: April 10, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Martinus H. E. Jansen, Arnoldus M. C. Kieboom
  • Patent number: 6182743
    Abstract: A heat exchanger tube having an internal surface that is configured to enhance the heat transfer performance of the tube. The internal enhancement has a plurality of polyhedrons extending from the inner wall of the tubing. The polyhedrons have first and second planar faces disposed substantially parallel to the polyhedral axis. The polyhedrons have third and fourth faces disposed at an angle oblique to the longitudinal axis of the tube. The resulting surface increases the internal surface area of the tube and the turbulence characteristics of the surface, and thus, increases the heat transfer performance of the tube.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: February 6, 2001
    Assignee: Outokumpu Cooper Franklin Inc.
    Inventors: Donald L. Bennett, Liangyou Tang
  • Patent number: 6085529
    Abstract: A heat exchanger comprising a precooler and reheater core adjacent a chiller core, first heat transfer passages extending through both cores through which incoming air passes in a first direction, second heat transfer passages extending through the chiller core through which coolant passes in heat exchange relationship with incoming air and perpendicular to the first direction, and third heat transfer passages extending through the precooler and reheater core through which cooled air from the chiller core passes in heat exchange relationship with the incoming air and perpendicular to the first direction. A manifold contiguous with both cores conducts chilled air from the chiller core to the third set of heat transfer passages.Incoming air is chilled in the chiller core and thereafter exchanges heat with the incoming air in the precooler and reheater core to precool the incoming air to form water droplets and to raise the temperature of the chilled air to a usable temperature.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: July 11, 2000
    Assignee: American Precision Industries Inc.
    Inventors: Timothy J. Galus, David F. Fijas
  • Patent number: 6009936
    Abstract: A heat exchanger comprises a tube 11 and fin plates 12 attached to the outer surface of the tube. Each fin plate 12 is in the form of a strip sheet which is wider than the diameter of the tube 11, and each fin plate 12 is fitted on the tube 11 and has a semicylindrical recess 20 in the form corresponding to the cylindrical shape of the tube 11. Flat fins 21 extend from both sides of the semicylindrical recess 20. Cut pieces 22a are formed each by a U-shaped cut 22 at a predetermined pitch in the longitudinal direction of the semicylindrical recess 20, and each cut piece is erected outwardly of the semicylindrical recess to thereby form an upstanding fin 23, which is formed on a first fin plate element 18 as well as a second fin plate element 19. Straight tube portion 15 of the tube 11 is fitted between the semicylindrical recesses 20 of the first fin plate element 18 and the second fin plate element 19. In this way, the tube and the fin plate 12 are secured.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: January 4, 2000
    Assignees: Sanyo Electric Co., Ltd., Sanoh Kogyo Kabushiki Kaisha
    Inventors: Junichi Kubota, Junichi Motegi, Setsuo Matsumoto, Hideaki Kuribara, Kazuaki Mabuchi
  • Patent number: 6006827
    Abstract: A cooling device for cooling a heat-generating component in a computer consists of a heat sink and a heat pipe having a portion fitted into a hole of the heat sink to be totally enclosed thereby. The heat sink consists of a number of mounting plates and heat dissipating fins alternately stacked together. Each mounting plate has two pegs on a top face thereof and two depressions in a bottom face thereof, wherein the pegs extend through a neighboring heat dissipating fin to fit into the depressions in a neighboring mounting plate, whereby the length of the heat sink can be easily adjusted by adding or reducing the number of the mounting plates and the heat dissipating fins. Thermally conductive adhesive is used between the heat sink and the heat pipe to fixedly connect them together.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: December 28, 1999
    Assignee: Hon Hai Precision Ind. Co., Ltd.
    Inventor: Chun-Hsin Lu
  • Patent number: 5966809
    Abstract: A heat exchange unit for a heat exchanger which includes a first tube with an outer surface and extended surface members located axially along the outer surface. Each member has a tube engagement surface and are axially Positioned. There is also taught a heat exchange fin block having a heat exchange unit with a second tube interconnected to the first tube by the extended surface members, wherein the extended surface members being tube fins at predetermined axial spacings. A tube finning machine is disclosed which includes a base with clamping means mounted thereon, carrier means movable relative to the base, and drive means for moving the carrier means. The clamping means clamps a portion of the first tube, and the carrier means transports at least one fin to an axially predetermined position adjacent the portion.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: October 19, 1999
    Assignee: Britannia Heat Transfer Limited
    Inventor: David Bland Pierce
  • Patent number: 5950718
    Abstract: A heat exchange tube useful as a reactor tube for producing ethylene and highly improved in heat transfer efficiency has fins formed on the inner surface of wall of the tube in one or a plurality of regions or all regions arranged from an inlet end of the tube to an outlet end thereof axially of the tube. The fins are positioned in a direction intersecting the axis of the tube and have a suitable pitch. The fins are formed by a projection helically extending on the tube wall inner surface around the axis or are each in the form of an annular projection circumferentially extending on the inner surface in a direction intersecting the axis at right angles therewith. The pitch of the fins, the angle of intersection of the fins with the axis and the height of the fins are suitably determined in conformity with the inside diameter of the tube.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: September 14, 1999
    Assignee: Kubota Corporation
    Inventors: Junichi Sugitani, Ken-ichi Mae, Masao Furuta
  • Patent number: 5927393
    Abstract: A heat exchanger fin having enhanced corrugations is provided. The corrugations define a generally sinusoidal wave pattern in a transverse direction across the fin. The fin is particularly well-suited for use in a heat exchanger, such as an evaporator or condenser, in a refrigeration system where the spacing between adjacent fins tends to be greater than in an air conditioning system. For example, when the spacing between adjacent fins is in a range from about 2 to 8 fins per inch, the height of the corrugations is greater than the fin spacing. The greater corrugation height bends the air passing between adjacent fins to a greater extent than prior art corrugated fins, thereby causing a greater volume of air to follow the contours of the corrugations and to come into contact with the surfaces of the fins to enhance heat transfer between the air and the fins. Further, the airflow upstream of the fin collars is defined by a larger vortices than in prior art corrugated fins, which further improves heat transfer.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: July 27, 1999
    Assignee: Heatcraft Inc.
    Inventors: Ira Z. Richter, Larry L. Shanks
  • Patent number: 5799725
    Abstract: A coil assembly for use in a heat exchanger having air flowing in a predetermined direction. The coil assembly comprises a plurality of parallel linear tubes, a plurality of return tubes interconnecting the linear tubes, and a plurality of fins. Each linear tube has a central portion with an elliptical cross-section and two end portions with round female sockets having circular cross-sections. Each return tube has two end portions with circular cross-sections. Each end portion of a return tube fits into a round female socket of a linear tube regardless of the orientation of the major axes of the linear tubes. The major axis of the elliptical cross-section resides at an oblique angle with respect to the direction of air flow. Each fin comprises a planar sheet of a heat-conductive material with a plurality of holes. The central portion of a linear tube extends through each hole. Each fin securely contacts each linear tube extending therethrough such that heat transfer therebetween is enhanced.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: September 1, 1998
    Assignee: Evapco International, Inc.
    Inventors: Wilson E. Bradley, Jr., Richard P. Merrill, George R. Shriver, Robert S. Weinreich
  • Patent number: 5752567
    Abstract: A heat exchanger having a plurality of tubes for circulating a refrigerant fluid and a plurality of fins in heat exchange contact with the plurality of tubes. Each of the fins includes a plurality of aligned collars defining at least one row of longitudinally spaced apertures, the plurality of tubes extending through the apertures and engaged by the collars. A pair of reinforcing ribs extend longitudinally of the fin, one of the pair on each side of the at least one row of apertures. A plurality of longitudinally spaced flat portions, lying in a common plane, and extend transversely between the ribs, one of the flat portions circumscribing each of the collars. A plurality of central corrugated portions transversely spaced from the ribs, extend longitudinally, one of the corrugated portions lying between each two of the flat portions. At least two sets of longitudinally extending louvers are located transversely between the central corrugated portion and the ribs and longitudinally between the flat portions.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: May 19, 1998
    Assignee: York International Corporation
    Inventor: Charles B. Obosu
  • Patent number: 5742001
    Abstract: A buried armored power transmission line includes a metal jacket housing at least one conductive busbar. The line is equipped with a cooling device operating by transferring heat from the jacket to the surface of the soil, including a metallic structure fixed to the jacket and extending towards the surface of the soil. This structure has a plurality of vertical first plates connected to the jacket having a vertical dimension such that their top edge is at a permissible calculated depth.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: April 21, 1998
    Assignee: GEC Alsthom T & D SA
    Inventor: Edmond Thuries
  • Patent number: 5727625
    Abstract: A heat exchanger includes a plurality of parallel spaced-apart fins and refrigerant-conducting tubes extending perpendicularly therethrough in a zigzagged arrangement. Slits are formed in each fin wherein there is a pair of slits directly in front of each pipe, a pair of slits at an upper front portion of the pipe, a pair of slits at a lower front portion of the pipe, a pair of slits at an upper central portion of the pipe, a pair of slits at a lower central portion of the pipe, a pair of slits at an upper rear portion of the pipe, a pair of slits at a lower rear portion of the pipe, and a pair of slits directly behind the pipe. The two slits of each pair extend from opposite sides, respectively, of the fin without any space formed between the slits, whereby the slits form contiguous air-conducting passages.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: March 17, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Back Youn, Young-Saeng Kim
  • Patent number: 5667006
    Abstract: A fin tube heat exchanger includes a plurality of fin plates disposed in parallel with one another, spaced at regular intervals and adapted to allow air to flow therebetween, and a plurality of refrigerant tubes disposed in at least two rows, inserted into the fin plates in a perpendicular direction and being adapted to allow a fluid medium to pass therein. Each of the fin plates has a plurality of raised strips which extend in a direction perpendicular to a direction of air flow. A plurality of normal raised strips are formed on both sides of the fin plates in at least one row on an air flow outlet side. A plurality of low raised strips or embossings are formed on at least one side of the fin plates in other rows. The height of the low raised strips or embossings in the other rows are lower than the height of the normal raised strips in the at least one row.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: September 16, 1997
    Assignee: LG Electronics, Inc.
    Inventors: Tae Wook Kang, Kam Gyu Lee
  • Patent number: 5660230
    Abstract: A heat exchanger including a heat exchanger conduit and fins arranged on the conduit tubes to further heat transfer between the external fluid flowing over the fins and the fluid flowing within the conduit. The fins include a row of apertures through which tubes of the heat exchanger conduit extend. The leading and trailing edges of the fins are contoured to substantially conform to isotherms around the circulating fluid flowing within the tubes. To achieve this edge configuration while also allowing for a dense packing of fins and tubes in a multi-row heat exchanger, the leading and trailing edges are wave shaped such that adjacent fins can interfit together. Suitable wave shapes include a sinusoidal wave as well as a trapezoidal wave. The isothermally contoured leading and trailing edges result in a fin configuration which efficiently utilizes the materials of its construction as well as results in minimal wastage during construction with a minimal impact on heat transfer.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: August 26, 1997
    Assignee: Inter-City Products Corporation (USA)
    Inventors: Charles B. Obosu, Alexander T. Lim
  • Patent number: D431073
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: September 19, 2000
    Assignee: McGraw-Edison Company
    Inventors: Stewart W. Durian, Stephen Durian