Patents Examined by Sheldon J Richter
  • Process for increasing the heat flow density of heat exchangers working with at least one high-velocity gaseous medium, and a heat exchanger apparatus for undertaking the process
    Patent number: 4593749
    Abstract: A method and apparatus are disclosed for increasing the heat flow density of heat exchangers having at least one gaseous fluid flowing therethrough at a high velocity. In one form of the method, which may be used in motor vehicles, the energy for the acceleration of the gaseous fluid is taken from the exhaust gases of an internal combustion engine. In this respect, an exhaust gas heat exchanger used for vehicle interior heating, or a heat exchanger used for cooling the engine coolant, may be used. In order to increase the energy content of the exhaust gas, the exhaust gas undergoes a pressure build-up. The waste heat of the exhaust gas may thus be used at low engine loads, with a relatively low need for engine cooling and a relatively high need for interior heating, in order to increase the heat flow density at the exhaust gas heat exchanger for vehicle heating.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: June 10, 1986
    Inventor: Oskar Schatz
  • Heat exchanger tube cleaning element capturing device with offset stop
    Patent number: 4592417
    Abstract: A heat exchanger (1) has a plurality of fluid flow tubes (5) secured adjacent their ends by tube sheets (6, 7). Cleaning elements (18) are adapted to shuttle back and forth in the tubes and are adapted to be captured by elongated slotted baskets (17). A cleaning element retaining device includes inwardly extending pairs of projections (30, 31) integral with the basket and with the respective pairs being offset longitudinally along the basket axis. A cleaning element can be tiltingly manipulated past the pairs of projections for insertion or removal into or out of the basket without substantial damage to the projections.
    Type: Grant
    Filed: December 5, 1984
    Date of Patent: June 3, 1986
    Assignee: Water Services of America, Inc.
    Inventor: Walter J. Baron
  • Reinforced plate fin heat exchanger
    Patent number: 4592420
    Abstract: A plate fin heat exchanger including generally parallel rows of flattened tubes extending through a stack of generally parallel plate fins. Each of the plate fins is provided with generally H-shaped deformations with the H-shaped deformations being in rows which are staggered with respect to each other. The deformations increase the rigidity of the plate fins during tube pushing and act to induce turbulence in a fluid flowing through the heat exchanger to enhance heat transfer.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: June 3, 1986
    Assignee: Modine Manufacturing Company
    Inventor: Gregory G. Hughes
  • Thin flat heat exchanger and method of making same
    Patent number: 4592415
    Abstract: A flat, very thin fluid heat exchanger of up to about 1/8 inch in thickness is formed from a pair of etched blanks. The blanks are provided with at least a pair of projecting tabs for locating the blanks relative to each other. The tabs are secured prior to brazing of the blanks and are thereafter removed. Posts are provided for facilitating securance of the heat exchanger to objects with which it is to be associated. A thin fluid flow passageway is provided between the blanks, and the heat exchanger provides fluid flow inlet and outlet openings communicating with the fluid flow passageway.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: June 3, 1986
    Inventor: Howard Friedman
  • Heat exchanger core construction utilizing a plate member adaptable for producing either a single or double pass flow arrangement
    Patent number: 4592414
    Abstract: A heat exchanger construction of the plate and fin type comprising a plurality of plate assemblies joined together in a stackable arrangement, each plate assembly being formed by a pair of similar plate members placed in mating face-to-face relationship with each other to form a central flow region therebetween. Each plate member includes a header portion located respectively adjacent each opposite end thereof, each header portion having at least one pair of spaced openings adaptable for receiving and discharging a fluid medium therethrough. A raised partitioning or pass rib is positioned extending between the pair of spaced openings associated with one of the header portions and depending upon the positioning of the respective pass ribs relative to one another when each respective pair of plate members are joined together either a single-pass or a double-pass flow system is formed therebetween.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: June 3, 1986
    Assignee: McCord Heat Transfer Corporation
    Inventor: Marvin D. Beasley
  • Flexible stabilizer for degraded heat exchanger tubing
    Patent number: 4590991
    Abstract: A flexible vibration stabilizer and method for reducing vibration in a tube in a shell and tube heat exchanger wherein the stabilizer is an elongated flexible cable or chain which may have a plurality of rigid members loosely or fixedly mounted thereon. A plug may be used for simultaneously mounting the stabilizer to the tube and for sealing same.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: May 27, 1986
    Assignee: Westinghouse Electric Corp.
    Inventors: Frank W. Cooper, Jr., Thomas M. Epperson, Gregory L. Calhoun, Harvey D. Kucherer
  • Motorcycle radiator
    Patent number: 4589512
    Abstract: A radiator circular or conical in shape for a motorcycle which may be advantageously located in a position adjacent the motorcycle in an arrangement similar to that of a muffler. The radiator includes a core of ring-shaped cross section with an inlet tank and an outlet tank. The inlet and outlet tanks may be positioned on either end of the radiator with radiator tubes extending generally longitudinally therebetween. Alternately, the tubes may be ring-shaped with the inlet and outlet tanks arranged generally along the longitudinal direction. A plurality of corrugated or plate fins may be used to enhance heat transfer. A plate may be positioned at one end of the radiator to insure radial air flow through the core thereof.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: May 20, 1986
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Ken Yamaguchi
  • Pressure protected tubular heat exchanger
    Patent number: 4589478
    Abstract: A heat exchanger of the tube and shell type comprising a shell and a shell enclosed tubular core, the core being removable from the shell for inspection and servicing. Motion of the core relative to the shell, and motion of core components relative to one another, is precluded without loss of core access and removability. In one disclosed form of the invention, abutments, at least one of which is part of a detachable closure, limit endwise core motion as well as a relative separating motion of headers which, together with interconnecting tubes, make up a core assembly. At the same time a rigid interponent element limits a relative approaching motion of the headers. In another disclosed form of the invention, headers have a screw threaded connection to parts of the enclosing shell.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: May 20, 1986
    Assignee: United Aircraft Products, Inc.
    Inventor: John E. Wunder
  • Heat recovery system employing a temperature controlled variable speed fan
    Patent number: 4589475
    Abstract: An energy recovery system includes a source of fluid desired to be cooled which is passed through a heat exchanger which receives input air and passes it through the heat exchanger utilizing a temperature controlled variable volume fan controlled to assure the discharge temperature from the heat exchanger is maintained at a predetermined temperature or within a predetermined temperature range.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: May 20, 1986
    Assignee: Plant Specialties Company
    Inventor: William T. Jones
  • Tube heat exchanger
    Patent number: 4589481
    Abstract: In a tube heat exchanger, each tube in a set has a non-round cross-section and two or more ridges extending helically around the tube's center line for keeping the center lines of the tubes at defined distances from each other, some of the tubes (14) being arranged so that the distance between the center lines of two adjacent tubes is essentially the same as or less than the sum of the radii of the circles circumscribing these tubes. Flattened cross-sections of the tubes may form a pattern of squares; or the center lines of the tubes may form a dividing pattern in the form of equilateral triangles, two adjacent tubes resting against each other at supporting points where the flattened cross-section of one tube forms a right angle with the flattened cross-section of the adjacent tube on the same level.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: May 20, 1986
    Assignee: AB Zander & Ingestrom
    Inventor: Rune Mansson
  • Aluminum heat exchanger provided with fins having hydrophilic coating
    Patent number: 4588025
    Abstract: The fins of an aluminum heat exchanger are treated with a coating composition comprising an alkali silicate and a low-molecular-weight compound having carbonyl and are thereafter heated for drying, whereby a hydrophilic coating is formed over the surfaces of the fins.
    Type: Grant
    Filed: November 7, 1984
    Date of Patent: May 13, 1986
    Assignee: Showa Aluminum Corporation
    Inventors: Takaichi Imai, Takeshi Yamada, Kunio Sakaue, Eizo Isoyama, Masaaki Mizoguchi, Katsumi Tanaka
  • High resolution control system for a pressure-responsive positioning device
    Patent number: 4587883
    Abstract: Two magnetic valves, one of which reduces the pressure and the other one of which increases the pressure by which the displacement of a positioning member is controlled, only one of them operated at a time in accordance to the sign of the error signal, are operated in a pulsed mode with variable pulse width when the error signal is within a range of low absolute value and in a continuous mode of operation when the error signal has a higher absolute value. Variation of the magnitude of the error signal within the intermittent valve operation range controls pulse width variation. Hysteresis is provided in a transition between operating modes of a valve by a time delay of the mode change after the error signal has risen or fallen past a threshold value of signal. High displacement resolution is obtained as well as independence from effect of temperature drifts and magnetic valve characteristics.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: May 13, 1986
    Assignees: Robert Bosch GmbH, Pierburg GmbH & Co. KG
    Inventors: Franz-Josef Ehrentraut, Manfred Henning
  • Anodic protection system and method
    Patent number: 4588022
    Abstract: An anodic protection system particularly useful in heat exchangers for cooling sulphuric acid, in which the cathode projects through both ends of the heat exchanger and a negative potential is applied to both ends of the cathode. The potentials are controlled to ensure that the hot and cool ends of the heat exchanger metal (tubes and shell) which ends have different potential requirements for remaining in the passive range, both remain within their respective passive ranges.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: May 13, 1986
    Assignee: C-I-L Inc.
    Inventor: Delio Sanz
  • Liquid film evaporation type heat exchanger
    Patent number: 4585055
    Abstract: A liquid film evaporation type heat exchanger including a plurality of heat transfer units, with each unit including a plurality of flat heat transfer ducts of square cross section formed with a plurality of warm water passageways extending perpendicular to the direction of flow of a liquid medium, and a plurality of liquid distributing beams formed with a pluraity of cutouts. The heat transfer ducts and the liquid distributing beams being alternately arranged in the respective units, with the heat transfer units being arranged at locations spaced apart from each other in the direction of flow of the liquid medium. Vapor releasing ports are formed in positions between the adjacent heat transfer units. Each heat transfer duct has on either side surface thereof a porous material layer providing a heat exchange surface on which a film of the liquid medium is formed for evaporation.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: April 29, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Wataru Nakayama, Takahiro Daikoku, Tadakatsu Nakajima, Heikichi Kuwahara, Akira Yasukawa
  • Heat exchanger for reactor core and the like
    Patent number: 4585053
    Abstract: A compact bayonet tube type heat exchanger which finds particular application as an auxiliary heat exchanger for transfer of heat from a reactor gas coolant to a secondary fluid medium. The heat exchanger is supported within a vertical cavity in a reactor vessel intersected by a reactor coolant passage at its upper end and having a reactor coolant return duct spaced below the inlet passage. The heat exchanger includes a plurality of relatively short length bayonet type heat exchange tube assemblies adapted to pass a secondary fluid medium therethrough and supported by primary and secondary tube sheets which are releasibly supported in a manner to facilitate removal and inspection of the bayonet tube assemblies from an access area below the heat exchanger.
    Type: Grant
    Filed: September 2, 1982
    Date of Patent: April 29, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Jay S. Kaufman, John A. Kissinger
  • Apparatus for cleaning heat exchanger tubes
    Patent number: 4583586
    Abstract: An improvement in apparatus for cleaning heat exchanger tubes wherein each tube has chambers at its opposite ends for capturing a tube cleaning element, such as a brush, which is adapted to move in opposite directions through the tube upon reversing the direction of flow of heat exchange fluid therethrough. The improvement comprises apparatus for detachably mounting the chambers to the ends of the respective tubes including a holder plate having openings formed therethrough at locations corresponding to locations of the ends of the heat exchanger tubes.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: April 22, 1986
    Assignee: Ebara Corporation
    Inventors: Masakazu Fujimoto, Naoyuki Inoue
  • Assembly device of ferritic stainless steel tubes on a carbon steel tube-plate, and process of manufacturing this device
    Patent number: 4583588
    Abstract: Assembly device of tubes of low carbon ferritic stainless steel having 17 to 18.5% by weight of chromium on a tube-plate of carbon steel. It includes a first overlay of low carbon austenitic stainless steel having 11.50 to 14% by weight of nickel and 22 to 25% by weight of chromium on the surface of the tube-plate opposite the plurality of tubes, a second overlay on the first of low carbon austenitic stainless steel having 10 to 12% by weight of nickel and 19 to 23% by weight of chromium extending beyond the upper level of the ends of the tubes, and weld beads with or without filling metal around these ends between these ends and the stainless steel of the second overlay.
    Type: Grant
    Filed: July 5, 1984
    Date of Patent: April 22, 1986
    Assignee: Stein Industrie
    Inventors: Marc Franzolini, Edmond Maria, Alain Vanderschaeghe, Jean Bezier
  • Fuel cell crimp-resistant cooling device with internal coil
    Patent number: 4583583
    Abstract: A cooling assembly for fuel cells having a simplified construction whereby coolant is efficiently circulated through a conduit arranged in serpentine fashion in a channel within a member of such assembly. The channel is adapted to cradle a flexible, chemically inert, conformable conduit capable of manipulation into a variety of cooling patterns without crimping or otherwise restricting of coolant flow. The conduit, when assembled with the member, conforms into intimate contact with the member for good thermal conductivity. The conduit is non-corrodible and can be constructed as a single, manifold-free, continuous coolant passage means having only one inlet and one outlet. The conduit has an internal coil means which enables it to be bent in small radii without crimping.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: April 22, 1986
    Assignee: Engelhard Corporation
    Inventor: Charles F. Wittel, deceased
  • Central dehumidification (tandem) system
    Patent number: 4582123
    Abstract: A central dehumidification system that will work in tandem with a furnace and a central air conditioner or as a single unit. The aforementioned central dehumidification tandem system is separate and independent of the air conditioner. The controls for operation of the central dehumidifier include a control unit which operates in conjunction with the air conditioner such that the central dehumidifier will not operate during operation of theair conditioner.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: April 15, 1986
    Inventor: Roger Williams
  • Thermal exchanger
    Patent number: RE32169
    Abstract: A heat exchanger for heating or cooling a liquid, comprises a stationary outer shell and an drum rotatable coaxially in the shell. The outer periphery of the drum is adjacent the inner periphery of the shell and a stationary heat exchanger is disposed within the drum. Liquid to be heated or cooled is fed into the drum past the stationary heat exchanger and then between the outer periphery of the drum and the inner periphery of the shell. Impeller structure is disposed on .[.the.]. .Iadd.and .Iaddend.extends axially along the outer periphery of the drum, such as a helicoidal vane, to .[.more.]. .Iadd.move .Iaddend.the liquid is a circuitous path along the inner periphery of the stationary shell upon rotation of the drum.
    Type: Grant
    Filed: August 10, 1982
    Date of Patent: June 3, 1986
    Assignee: Etablissement Euroburner
    Inventor: Tadeusz Piotrowski