With Means Flexing, Jarring Or Vibrating Heat Exchange Surface Patents (Class 165/84)
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Publication number: 20090090613Abstract: Targeted application of anti-fouling mechanisms in a heat exchange system produces higher rates of energy recovery. The anti-fouling mechanisms with high mitigation rates can be deployed at only the hottest portions of a pre-heat train that experience the highest rates of fouling and heat loss. In application, bundles of corrosion resistant smoothed tubes are deployed in the late pre-heat train to significantly reduce the formation of harder deposits. Vibration can be used as an adjunct approach in conjunction with the corrosion resistant, smooth tubes, or deployed alone on existing bundles. The use of high performing, more durable exchangers in select locations justifies the increased cost of these components.Type: ApplicationFiled: September 26, 2008Publication date: April 9, 2009Applicant: ExxonMobil Research and Engineering CompanyInventors: Ian A. Cody, Amar S. Wanni, Robert C. Welch, James E. Feather, Mark A. Greaney, Limin Song, Jasmina Poturovic
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Patent number: 7497673Abstract: In a scroll fluid machine, a driving shaft has an eccentric axial portion around which an orbiting scroll revolves while the orbiting scroll engages with a fixed scroll. A cooling path extends through the driving shaft to a gap between the outer circumferential surface of the eccentric axial portion and the inner circumferential surface of an axial hole of the orbiting scroll. A cooling gas is introduced into the cooling path to cool bearings around the driving shaft. A forced convection generating portion is provided on the driving shaft for sucking the cooling gas into the gap and discharging the gas.Type: GrantFiled: March 23, 2007Date of Patent: March 3, 2009Assignee: Anest Iwata CorporationInventor: Ryusuke Muto
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Publication number: 20090032222Abstract: A ultrasonic transducer is associated with a heat exchanger and is operable to vibrate a tube associated with the heat exchanger to break up accumulated solids which may have formed on an outer periphery of the tube. A gas flow passes over the tube to remove the pulverized solids.Type: ApplicationFiled: August 3, 2007Publication date: February 5, 2009Inventors: Philip J. Birbara, Arthur K. Colling
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Publication number: 20090000770Abstract: The present invention relates generally to a rapper alignment plug used in the custom alignment of one or more portions of a rapper device through the walls of a vessel, and methods for forming and using same.Type: ApplicationFiled: June 27, 2007Publication date: January 1, 2009Inventor: Rickey A. Wilson
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Publication number: 20080295997Abstract: A device (103) is provided which comprises (a) a housing (115) equipped with a viewing window (253); (b) a diaphragm (301), visible through said viewing window; (c) an actuator (126) adapted to vibrate said diaphragm at an operating frequency; and (d) a strobe light (121).Type: ApplicationFiled: June 4, 2008Publication date: December 4, 2008Inventors: Samuel N. Heffington, Michael D. Wilcox, Randall P. Williams, Robert T. Reichenbach
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Patent number: 7395760Abstract: A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility (31) such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives (101) to prevent them from detonating due to the heat of the on-line facility. Thus, controlled, appropriately-timed detonation can be initiated as desired, and boiler scale and slag is removed without the need to shut down or cool down the facility.Type: GrantFiled: September 7, 2005Date of Patent: July 8, 2008Assignee: NorthAmerican Industrial Services, Inc.Inventors: Francis Zilka, Timothy Zilka, Kurt Prouty, Donald Howard
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Patent number: 7387503Abstract: In a scroll fluid machine, a fixed scroll has a fixed wrap, and an orbiting scroll has an orbiting wrap which engages with the fixed wrap to form a compressing chamber between the orbiting and fixed wraps. The orbiting scroll is rotatably mounted around an eccentric axial portion of a driving shaft and revolved by the driving shaft. A gas introduced from the outer circumference of the fixed scroll is compressed in the compressing chamber as it flows towards the center. Parts near the center is heated by a compressed gas. On the other surface of the fixed scroll to the surface having the fixed wrap, a plurality of cooling fins are provided. Air is introduced between the cooling fins to cool the machine. Between the cooling fins, a heat-releasing projection is provided to improve cooling efficiency.Type: GrantFiled: January 10, 2007Date of Patent: June 17, 2008Assignee: Anest Iwata CorporationInventors: Minako Toda, Masatomo Tanuma, Yuki Takada, Naohiro Minekawa
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Publication number: 20080121373Abstract: A heat-dissipation device with dust-disposal function for removing dust from cooling metallic fins is provided, which includes a heat-conducting module and a vibrator. The heat-conducting module has a plurality of metallic fins, and the vibrator is directly or indirectly connected to the heat-conducting module to provide a vibrating source for the metallic fins, such that the dust accumulated on the metallic fins is shook off by vibration. The vibrator may be a piezoelectricity element or an eccentric motor. In addition, the vibrator may be an ultrasonic generator disposed near the heat-conducting module to provide a non-contact vibrating source for the metallic fins.Type: ApplicationFiled: February 6, 2007Publication date: May 29, 2008Applicant: INVENTEC CORPORATIONInventors: Frank Wang, Chih-Kai Yang
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Publication number: 20080041322Abstract: An embodiment in accordance with the present invention provides a device and method for removing ash from an interior surface of a radiant synthesis gas cooler. The device for removing ash includes a rapper actuator, a striker pin coupled to the rapper actuator including a proximal end and a distal end, and a striker target assembly disposed such that a proximal surface of the striker target assembly is in contact with the distal end of the striker pin and a distal surface is in contact with the surface of the radiant synthesis gas cooler.Type: ApplicationFiled: August 14, 2007Publication date: February 21, 2008Applicant: THE BABCOCK & WILCOX COMPANYInventors: Steven R. Fry, Harry E. Hillegass, David L. Kraft
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Publication number: 20070267175Abstract: A device is coupled to a heat exchanger for mitigating fouling by applying a mechanical force to a fixed heat exchanger to excite a vibration in the heat exchange surface and produce shear waves in the fluid adjacent the heat exchange surface while the heat exchanger is in operation. An electromagnetic driven impulse device induces vibration onto heat exchanger tubes and/or an acoustic wave through the liquid service fluid to reduce fouling. The device can be mounted directly onto the outer part or piping and produces acoustical/vibrational modes onto the tube or near the surface of tubes.Type: ApplicationFiled: May 19, 2006Publication date: November 22, 2007Applicant: Exxon Mobil Research and Engineering CompanyInventors: Mohsen S. Yeganeh, Glen B. Brons, Henry Alan Wolf, Limin Song
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Publication number: 20070267176Abstract: Fouling of heat exchange surfaces is mitigated by a process in which a mechanical force is applied to a fixed heat exchanger to excite a vibration in the heat exchange surface and produce shear waves in the fluid adjacent the heat exchange surface. The mechanical force is applied by a dynamic actuator coupled to a controller to produce vibration at a controlled frequency and amplitude output that minimizes adverse effects to the heat exchange structure. The dynamic actuator may be coupled to the heat exchanger in place and operated while the heat exchanger is on line.Type: ApplicationFiled: May 19, 2006Publication date: November 22, 2007Applicant: ExxonMobil Research and Engineering CompanyInventors: Limin Song, Julio D. Lobo, Glen B. Brons, San Chhotray, Himanshu M. Joshi, George A. Lutz
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Patent number: 7264039Abstract: An apparatus removing material accumulated on the exterior surfaces of adjacent heat exchanger plates arranged side-by-side in a spaced relationship in a bulk material heat exchanger and a bulk material heat exchanger incorporating the apparatus is provided. In one aspect, the apparatus develops vibratory shock waves through each coil to dislodge material that has accumulated on the surfaces of the heat exchanger plates. In another aspect, the apparatus translates each heat exchanger plate in a sequential back-and-forth motion to create a shearing effect in material that has accumulated between the adjacent surfaces of heat exchanger plates. In one aspect, the apparatus includes a driven cam and a cam follower, where the cam or cam follower includes a profile to achieve the desired motion of each heat exchanger plate.Type: GrantFiled: August 18, 2006Date of Patent: September 4, 2007Inventor: Peter Dawson
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Patent number: 7147079Abstract: The invention relates to a device to prevent the formation of solid matter due to projections on an air outlet, for example that of an armored vehicle, located near to such projections. It comprises a shutter 1 incorporating at least two vibrating fins 3 fixed onto a support 2, said fins being of two different types mounted alternatively and vibrating differently. One vibrating fin 3a is connected to the support by a number N of fastenings and the other vibrating fin 3b by a number N+/?1 fastenings. The support 2 for the vibrating fins is constituted by an assembly of bars 2a, 2b that are substantially perpendicular to the fins 3. Abutments 5 are placed on the fins 3 or on the support 2.Type: GrantFiled: December 22, 2003Date of Patent: December 12, 2006Assignee: Giat IndustriesInventors: Michel Brun, Sylvain Carlier, Antoine Saunier
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Patent number: 7021366Abstract: A heat dissipation apparatus and method for dissipating heat from a heat source includes a thermal conductive element bonding to the heat source to transfer heat energy generated by the heat source and a vibration source located on the thermal conductive element to accelerate heat transfer to the edges of the thermal conductive element to perform heat exchange with external cooling air and improve cooling efficiency.Type: GrantFiled: November 12, 2004Date of Patent: April 4, 2006Assignee: Risun Expanse Corp.Inventors: Chiang-Cheng Huang, Chien-Chung Sun
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Patent number: 7023697Abstract: An apparatus including an actuation membrane unit to generate air movement in a direction of a heat generating device to reduce an ambient temperature of the device.Type: GrantFiled: March 5, 2004Date of Patent: April 4, 2006Assignee: Intel CorporationInventors: Himanshu Pokharna, Eric DiStefano
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Patent number: 6953083Abstract: A condenser is provided that makes a liquid droplet of a liquid phase medium drop effectively, the liquid phase medium residing in a lower end opening of a medium passage of the condenser, thereby preventing any degradation in the performance of the condenser. In the condenser, vapor, which is supplied to a cooling pipe (14) connected to cooling fins (16), is cooled, condensed into water, and recovered in a water-collecting tray (21) provided beneath the cooling pipe (14), and a needle-shaped member (24) provided so as to face the lower end opening of the cooling pipe (14) ruptures the droplet that, due to surface tension, resides in the lower end opening of the cooling pipe (14) and makes it drop into the water-collecting tray (21).Type: GrantFiled: March 16, 2001Date of Patent: October 11, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yasunobu Kawakami, Tsutomu Takahashi, Hiroyoshi Taniguchi, Hiroyuki Niikura, Kiyoshi Katahira
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Patent number: 6935281Abstract: An on-line method and a device for cleaning of contamination such as caking or slag deposits from surfaces in vessels and combustion installations by means of blasting technology. An explosive gas mixture is made to detonate in the proximity of the deposits and thereby clean the deposits from the surfaces.Type: GrantFiled: March 25, 2002Date of Patent: August 30, 2005Assignee: Bang & Clean GmbHInventor: Hans Ruegg
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Patent number: 6801430Abstract: An apparatus including an actuation membrane unit to generate air movement in a direction of a heat generating device to reduce an ambient temperature of the device.Type: GrantFiled: May 9, 2003Date of Patent: October 5, 2004Assignee: Intel CorporationInventor: Himanshu Pokharna
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Publication number: 20040123979Abstract: A multi-stage thermoacoustic device includes a resonance tube mounted therein a plurality of stacks and a plurality of heat exchangers interlaid with each other adjacent to a second end of the resonance tube. A working fluid is filled in the resonance tube. A driver mounted on a first end of the resonance tube drives the working fluid oscillate in the resonance tube, the working fluid is compressed and expanded and causes temperature oscillation and thermal energy flowing from one end of the stack to the other end. The thermal energy, such as cooling capacity, is finally transferred outward through the heat exchangers on sides of the stacks. The multiple stacks and heat exchangers perform a multiple stage temperature gradient. More thermal energy is transferred, and the working efficiency is improved.Type: ApplicationFiled: December 30, 2002Publication date: July 1, 2004Inventors: Ming-Shan Jeng, Ya-Wen Chou
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Patent number: 6755156Abstract: A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility (31) such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives (101) to prevent them from detonating due to the heat of the on-line facility. Thus, controlled, appropriately-timed detonation can be initiated as desired, and boiler scale and slag is removed without the need to shut down or cool down the facility.Type: GrantFiled: March 5, 2002Date of Patent: June 29, 2004Assignee: NorthAmerican Industrial Services, Inc.Inventors: Francis Zilka, Timothy Zilka, Kurt Prouty, Donald Howard, Christopher Scaringe, William Youngs
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Publication number: 20040035555Abstract: A counter-stream-mode oscillating-flow heat transport apparatus improves heat transport capability by imparting oscillatory displacement to a fluid located near a heat-generating element such that the fluid is directed toward the heat-generating element. Turning portions of serpentine flow paths are disposed to face the heat-generating element. The flow paths are stacked in multiple layers in the direction from the heat-generating element to the flow paths, and a plurality of flow paths are disposed adjacent to the heat-generating element in the direction of fluid oscillation.Type: ApplicationFiled: August 5, 2003Publication date: February 26, 2004Inventors: Kenichi Nara, Yasumasa Hagiwara, Kimio Kohara, Shinichi Yatsuzuka, Seiji Inoue, Akito Akimoto, Makoto Sugiura, Kouji Kishita, Nobunao Suzuki
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Patent number: 6644201Abstract: A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives to prevent them from detonating due to the heat of the on-line facility. Thus, controlled, appropriately-timed detonation can be initiated as desired, and boiler scale and slag is removed without the need to shut down or cool down the facility.Type: GrantFiled: May 2, 2002Date of Patent: November 11, 2003Assignee: NorthAmerican Industrial Services, Inc.Inventors: Francis Zilka, Timothy Zilka, Kurt Prouty, Donald Howard, Christopher Scaringe, William Youngs
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Patent number: 6619383Abstract: A vibrated bed of particles is created by vibrating a chamber. Particles are flowed to a ceiling of the chamber and cascade through a gas flowing though the chamber, exchanging heat with the gas. Particles spouted to the ceiling spread there and cascade. Larger particles, raised above the ceiling by a lateral vibrated elevator, cascade from channels beneath openings in the ceiling. A plenum and tubes release protective gas through the vibrated bed. Tubes embedded in the vibrated bed move fluid to exchange heat with the particles in the vibrated beds. Serialized chambers are reversed and particles flow from one chamber to another.Type: GrantFiled: July 25, 2001Date of Patent: September 16, 2003Inventor: Arthur M. Squires
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Patent number: 6604573Abstract: A tube is provided with elastically deformable tube deforming sections (tube curved sections), and a fin is provided with the quality of spring so that the fin deforms in accordance to changes of dimension between the tubes. Accordingly, it is possible to weaken (absorb) stress by the tube deforming sections (tube curved sections), and to prevent the fin from separating from the tube even when the tube deforming section (tube curved section) deforms.Type: GrantFiled: December 14, 2000Date of Patent: August 12, 2003Assignee: Denso CorporationInventors: Shingo Morishima, Tadayoshi Terao, Toshihiro Mafune
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Patent number: 6588497Abstract: One embodiment of a thermal management system comprises a heated body, where a heat energy is contained within this heated body. This first embodiment also comprises an ambient fluid adjacent to an exterior surface of the heated body. Walls forming a channel are disposed within an interior of the heated body. The heat contained in the heated body is moved into at least one of these channel walls. The first embodiment comprises a synthetic jet actuator adjacent to one of the channel walls. The synthetic jet actuator is positioned so as to direct a synthetic jet flow through the channel. The operation of the synthetic jet actuator creates a flow consisting of the ambient fluid though the channel. This flow of ambient fluid cools the walls of the channel and thereby also cools the heated body itself.Type: GrantFiled: April 19, 2002Date of Patent: July 8, 2003Assignee: Georgia Tech Research CorporationInventors: Ari Glezer, Raghavendran Mahalingam, Mark G. Allen
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Patent number: 6431073Abstract: A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility (31) such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives (101) to prevent them from detonating due to the heat of the on-line facility. Thus, controlled, appropriately-timed detonation can be initiated as desired, and boiler scale and slag is removed without the need to shut down or cool down the facility.Type: GrantFiled: July 8, 1999Date of Patent: August 13, 2002Assignee: North American Industrial Services, Inc.Inventors: Francis Zilka, Timothy Zilka, Kurt Prouty, Donald Howard
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Publication number: 20020079089Abstract: An apparatus enhances the condensation and boiling of a fluid in heat exchange machines, by directly applying time-periodic acoustic waves with a resonance oscillation frequency to liquid drops and/or bubbles formed on a solid surface, when the fluid is in the process of condensation or boiling, thereby effectively removing them therefrom. The apparatus comprises a signal generator for generating a driving signal based on a resonant oscillation frequency of at least one of the liquid drops and the bubbles; and a vibrator, in response to the driving signal, for providing an acoustic pressure wave to said at least one of the liquid drops and the bubbles, to thereby detach them from the solid surface.Type: ApplicationFiled: March 16, 2001Publication date: June 27, 2002Applicant: KOREA INSTITUTE OF SCIENCE & TECHNOLOGYInventors: Byung-Ha Kang, Seo-Young Kim, Ho-Young Kim
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Patent number: 6405794Abstract: A convective cooling apparatus cools an electronic device including at least one heat-generating component and enclosed in a case having cooling medium such as air or fluid therein. The convective cooling apparatus neither attempts to increase the velocity of flow in the cooling medium nor replaces the cooling medium with other material as prior art cooling apparatus did. Instead, it utilizes the instability which is inherent in the flow of the cooling medium. In the convective cooling apparatus, by using a driver for generating a signal tuned to the characteristic frequency of the flow, a an acoustic vibrator is driven to provide acoustic waves. The acoustic waves induce resonance of flow, which renders the cooling medium vigorously mixed, which, in turn, enhances the heat dissipation from the device.Type: GrantFiled: June 13, 2000Date of Patent: June 18, 2002Assignee: Korea Institute of Science and TechnologyInventors: Seo Young Kim, Byung Ha Kang, Jin Wook Paek, Sung Ki Kim
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Publication number: 20020011328Abstract: A vibrated bed of particles is created by vibrating a chamber. Particles are flowed to a ceiling of the chamber and cascade through a gas flowing though the chamber, exchanging heat with the gas. Particles spouted to the ceiling spread there and cascade. Larger particles, raissed above the ceiling by a lateral vibrated elevator, cascade from channels beneath openings in the ceiling. A plenum and tubes release protective gas through the vibrated bed. Tubes embendded the vibrated bed move fluid to exchange heat with the particles in the vibrated beds. Serialized chambers are reversed and particles flow from one chamber to another.Type: ApplicationFiled: July 25, 2001Publication date: January 31, 2002Inventor: Arthur M. Squires
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Publication number: 20020007622Abstract: On tree shaking harvesters, shaker heads with padding engage tree trunks of nut and fruit trees and shake the trunks to dislodge the fruit/nuts. The invention disclosed is directed toward an improved pad or padding filler and cooling arrangement for the pads of a shaker machine/harvester. The pad is improved by having an improved filler material within a main chamber of the pad, the filler being ceramic material to supply body and help maintain a cool pad; and an improved cooling liquid circulation fitting is connected to the pad in one embodiment.Type: ApplicationFiled: July 20, 2001Publication date: January 24, 2002Inventors: Christopher Compton, Ira Compton
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Patent number: 6334480Abstract: A cooling device with micro cooling fins is provided. The cooling device includes a substrate, a plurality of vibrating type cooling fins extending from the substrate, and a blast fan for ventilating the substrate to cool the substrate and the vibrating type cooling fins and for causing the vibrating type cooling fins to vibrate. Accordingly, micro cooling fins formed on the surface of a substrate change the flowing path of the air and improve the performance of heat transfer near the surface of the substrate due to their vibration. In other words, the resistance to heat transfer is decreased and the performance of heat transfer is improved by disturbing the formation of a heat boundary layer, which is formed on a smooth surface. Since the cooling device provides improved heat transfer performance compared to an existing cooling device, an area and volume for heat transfer can be decreased so that the cooling device can be miniaturized.Type: GrantFiled: November 1, 2000Date of Patent: January 1, 2002Assignee: Samsung Electronics Co., Ltd.Inventors: Geunbae Lim, Hayong Yun, Jung Hyun Lee, Yukeun Eugene Pak, Jung-sang Ko, Sung-jin Kim
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Patent number: 6321690Abstract: A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives to prevent them from detonating due to the heat of the on-line facility. Thus, controlled, appropriately-timed detonation can be initiated as desired, and boiler scale and slag is removed without the need to shut down or cool down the facility.Type: GrantFiled: September 10, 1999Date of Patent: November 27, 2001Assignee: North American Industrial Services, Inc.Inventors: Francis Zilka, Timothy Zilka, Kurt Prouty, Donald Howard, Christopher Scaringe, William Youngs
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Patent number: 6059020Abstract: An apparatus for acoustically cooling automotive electronics in which an acoustic driver and acoustic reflector are disposed within a hollow member, such as a cross-car-beam of a vehicle. The frequency of the acoustic driver and the distance between the acoustic driver and the acoustic reflector are selected to generate a standing acoustic wave within the hollow member.Type: GrantFiled: January 16, 1997Date of Patent: May 9, 2000Assignee: Ford Global Technologies, Inc.Inventors: Vivek Amir Jairazbhoy, Prathap Amerwai Reddy, George Mozurkewich, Jr.
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Patent number: 5873408Abstract: The technical field of the invention is that of manufacturing heat treatment apparatuses such as furnaces for thermally cracking chemical substances, in particular hydrocarbons.Type: GrantFiled: April 18, 1997Date of Patent: February 23, 1999Assignee: NaphtachimieInventors: Serge Bellet, Guy Louradour, Rebecca Paterson
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Patent number: 5840130Abstract: In a combined gas/steam power plant with a once-through forced-flow steam generator, a separation bottle (25) is connected between the evaporator (22) and the superheater (23). To clean the water/steam circuit, in the full-load or the part-load mode, a larger quantity of water than necessary is conveyed through the economizer (21) and the evaporator (22) via a feed pump (20). The quantity of water is selected such that wet steam passes into the separation bottle (25). This water fraction, together with all the impurities contained therein, is separated in the separation bottle and is drawn off via a clarifying line (29). Overfeeding can be regulated in such a way that the fresh steam temperature corresponds to the nominal value of the respective load point. When cleaning of the water/steam circuit is intended in the full-load mode, and without overfeeding the system, steam from a stage of incomplete evaporation can be extracted out of the evaporator and led into the separation bottle.Type: GrantFiled: November 12, 1996Date of Patent: November 24, 1998Assignee: Asea Brown Boveri AGInventors: Erhard Liebig, Christoph Ruchti
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Patent number: 5816317Abstract: The present invention relates to an apparatus for heat transfer from hot particulate laden gas to a coolant fluid within a heat transfer tube. The apparatus is comprised of layers of vertically aligned strips which are offset at an angle to adjacent layers and form channels which extend through the layers. Heat transfer tubes are located in the channels formed by the vertically aligned strips. The hot particulate laden gas introduced into the apparatus is divided into a number of streams moving in two different directions by the layers of vertically aligned strips. The streams of gas cross each other spatially and thus generate vortices. The vortices force the particles away from the heat transfer tube in the center of the channel and to precipitate on the vertically aligned strips where they fall due to gravitational forces or are removed by a shaking apparatus. Heat is then drawn from the resulting substantially particulate free gas.Type: GrantFiled: August 16, 1996Date of Patent: October 6, 1998Assignee: Caldyn, Inc.Inventor: Jogindar Mohan Chawla
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Patent number: 5813451Abstract: The present invention relates to an apparatus for heat transfer from hot particulate laden gas to a coolant fluid within a heat transfer tube. The apparatus is comprised of layers of vertically aligned strips which are offset at an angle to adjacent layers and form channels which extend through the layers. Heat transfer tubes are located in the channels formed by the vertically aligned strips. The hot particulate laden gas introduced into the apparatus is divided into a number of streams moving in two different directions by the layers of vertically aligned strips. The streams of gas cross each other spatially and thus generate vortices. The vortices force the particles away from the heat transfer tube in the center of the channel and to precipitate on the vertically aligned strips where they fall due to gravitational forces or are removed by a shaking apparatus. Heat is then drawn from the resulting substantially particulate free gas.Type: GrantFiled: September 9, 1997Date of Patent: September 29, 1998Assignee: Caldyn, Inc.Inventor: Jogindar Mohan Chawla
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Patent number: 5769034Abstract: A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives to prevent them from detonating due to the heat of the on-line facility. Thus, controlled, appropriately-timed detonation can be initiated as desired, and boiler scale and slag is removed without the need to shut down or cool down the facility.Type: GrantFiled: January 17, 1997Date of Patent: June 23, 1998Inventors: Frank Zilka, Tim Zilka, Kurt Prouty, Don Howard
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Patent number: 5597417Abstract: With a method and apparatus for the percussive cleaning of objects disposed in a chamber that is under process pressure, whereby an elongated percussive element is held below and in contact with the object that is to be cleaned and percussive energy is applied to the percussive element via an accelerated elongated striker, it is provided for a more simple pressure balancing that at least during the acceleration of the striker, the two ends of the striker be maintained at the same pressure, which essentially corresponds to the pressure in the process chamber.Type: GrantFiled: October 6, 1994Date of Patent: January 28, 1997Assignee: L. & C. Steinmuller GmbHInventors: Gustav Thones, Ulrich Rottlander
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Patent number: 5558156Abstract: A heat exchanger has heat exchange members for performing heat exchanging with a fluid to flow along surfaces thereof. Fins are fixed, at only one end thereof in the direction of flow of the fluid, to the respective heat exchange members in a cantilevered manner. Each of the fins has a piezoelectric material layer laminated on at least one of the surfaces of each fin. Vibrations are given to the fins, with the fixed end thereof operating as a fulcrum, by applying an alternating voltage to the piezoelectric material layer such that the fins are extended and contracted in the direction of the flow of the fluid. As a modified example, each fin may be provided at its rear end with a weight. Piezoelectric actuators are disposed inside a frame in which the heat exchanger is contained, in a manner to pinch the heat exchanger in a vertical direction. By causing the actuators to vibrate, the fins are also vibrated.Type: GrantFiled: December 21, 1994Date of Patent: September 24, 1996Assignee: Honda Giken Kogyo KabushikiInventor: Toshihiro Tsutsui
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Patent number: 5553571Abstract: An apparatus and method of operating a steam generator tube bank are disclosed in which a water drum of a typical steam drum/water drum combination is replaced with a plurality of smaller readers to permit the use of rapping, or mechanical rappers, to clean the tubes extending between the steam drum and the headers. The steam generator tube bank of the present invention comprises a steam drum or collecting header, a plurality of headers extending below the steam drum, and a plurality of tubes extending between the steam drum and the headers and placing the steam drum and headers in fluid flow communication. The headers are sized to permit debris or deposits which accumulate on the tubes to be removed by rapping the headers, thereby inducing vibration of the headers and the tubes. The tubes are arranged in rows, and the headers are arranged to form rows of axially-aligned pairs of headers.Type: GrantFiled: December 7, 1994Date of Patent: September 10, 1996Assignee: Foster Wheeler Energy CorporationInventors: Walter R. Campbell, John W. Phalen, Stephen J. Goidich
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Patent number: 5540275Abstract: A rapping hammer system adapted for periodically rapping and cleaning tubes of a heat exchanger unit to remove undesired deposits from outside the tubes. A plurality of rapping hammers are each pivotably attached to a radial arm extending outwardly from and spaced apart along a rotatable shaft. A spring device is attached to each radial arm and arranged to contact the rapping hammer with sufficient force so as to substantially restrain repeated striking movements of the rapping hammer against an impact stem of the heat exchange unit following an initial impact of the hammer. A method is also disclosed for operating the rapping hammer system for periodically rapping and cleaning the outside surface of heat exchanger tubes such as boiler tubes of accumulated ash and soot deposits.Type: GrantFiled: March 17, 1995Date of Patent: July 30, 1996Assignee: Foster Wheeler Energy CorporationInventor: Frantisek L. Eisinger
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Patent number: 5482110Abstract: A device for cooling a gas that forms deposits has an upright container through which the gas to be cooled flows. At least two heating surface units with at least one heating surface of a closed geometry are provided. The heating surface units are positioned within the upright container one atop the other. A cooling medium flows through the heating surface units. Each heating surface has coordinated therewith a beating device. The container has a support and an upper one of the heating surface units is supported at the support of the container. At least one array of connecting tubes for conveying the cooling medium is provided. The array of connecting tubes connects respectively a lower one of the heating surfaces units to an adjacent upper one of the heating surface units such that the cooling medium flows sequentially through the heating surface units.Type: GrantFiled: July 22, 1994Date of Patent: January 9, 1996Assignee: L. & C. Steinmuller GmbHInventors: Ralf-Uwe Hartermann, Hubert Scheid, Reinald Schulze-Eckel, Joachim Papendick
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Patent number: 5429077Abstract: An apparatus and method by which deposits are removed from the heat exchange surfaces of heat exchange element in a boiler. According to the present invention, a heat exchange medium flowing through the element at a first temperature has injected into it a fluid at a second temperature. The injection of the fluid and the temperature difference between the fluid and the medium causes a pressure wave to be produced in the heat exchange element at a specific location whereby the pressure wave in the medium causes mechanical vibration of the element. The result is that ash, scale, soot and other deposits are fractured, loosened and removed from the surfaces of the element.Type: GrantFiled: July 15, 1994Date of Patent: July 4, 1995Assignee: The Babcock & Wilcox CompanyInventor: Thomas E. Moskal
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Patent number: 5367605Abstract: A boiler for the production of steam and/or hot water has a principal enclosure limited by a watertight wall for containing water, a bottom water extraction outlet,a water supply inlet, an upper steam outlet and a level detector controlling the water level in the enclosure. Electric immersion heating elements are provided in the enclosure for heating the water to generate steam. At least one section of the enclosure wall adjacent the water level on which scale deposits are likely to form is deformable by flexion and is stressed by time-varying deformations of the wall produced by variations of water and/or steam pressure in the enclosure which causes the film of scale deposited on the inner surface of the at least one deformable section to break up and become detached so that they fall to the bottom of the enclosure for easy elimination by drainage of the water from the enclosure through the bottom water extraction outlet.Type: GrantFiled: June 8, 1992Date of Patent: November 22, 1994Assignee: Societe Cooperative de Production BourgeoisInventor: Raymond Violi
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Patent number: 5353864Abstract: A mass flow cooler for cooling particulate material comprising a vertical bin having a top end, a bottom end, a material inlet near the top end and a material discharge in the bottom end; the material discharge comprising a plurality of orifices through which the particulate material may flow; a plurality of vertical, tubular heat exchanger elements, each having an open top end and a sealed bottom end and extending from the top of the bin toward the bottom of the bin; a plurality of fluid distribution tubes corresponding to the number of heat exchanger elements, each fluid distribution tube having an open top end and an open bottom end and extending through the top end of a corresponding heat exchanger element toward the bottom end of the heat exchanger element; each fluid distribution tube being connected to a source of cooling fluid; and a discharge orifice plate positioned below the material discharge for controlling the rate at which the material flows through the bin.Type: GrantFiled: March 1, 1993Date of Patent: October 11, 1994Assignee: FMC CorporationInventors: Harvey R. Greenland, John A. Canterbury
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Patent number: 5315966Abstract: To clean boiler tubes, a hammering device for shaker rods comprises a series of hammers mounted on a horizontal shaft for vertical rotation. The hammers are moved clockwise around the shaft somewhat less than 180.degree. from the face of the rod, and then released circumferentially around the shaft axis to fall by gravity in anticlockwise direction, thereby hitting the surface of the shaker rod in a straight line. The hammer comprises a hitting surface and a support shank on which a piece of lug is installed parallel to the hitting surface. To move the hammer, a cam fixed to the shaft engages eccentrically the lug so the cam releases the lug at 100.degree. to 130.degree., that is somewhat less than a half turn. The lug is provided with an outer rotating ring. The hammer impact surface defines a cam such that an apex point faces the impact transfer axis of the shaker rod in a series of positions of hammer varying between -2.degree. and +8.degree..Type: GrantFiled: January 19, 1993Date of Patent: May 31, 1994Inventors: Serge Gamache, Louis-Paul Gauvin
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Patent number: 5316076Abstract: A method and arrangement for enforced heat transmission between a solid or liquid alimentary body and an ambient gas takes place in connection with cooling/freezing or when cooking, frying or drying the entire part or parts of the alimentary body. This method and arrangement uses a low-frequency standing sound wave. The apparatus uses a low-frequency sound generator having a pulsator part and a resonator part. The resonator part is acoustically virtually closed and is designed so that the alimentary body, which is to be exposed to enforced heat transmission, is located within a zone inside the resonator part where the standing sound wave has a particle velocity anti-node.Type: GrantFiled: June 18, 1991Date of Patent: May 31, 1994Assignee: Frigoscandia Food Process Systems ABInventors: Roland Sandstrom, Ann Maxe, Tore Strandberg, Lars Lundsten, Alvar Andersson
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Patent number: 5307743Abstract: A method and apparatus for deslagging a cyclone furnace in which a series of flexible hollow tubes are inserted into the combustion chamber and the explosive charges in each hollow tube are detonated sequentially. Each of the hollow tubes is biased outwardly against the accumulated slag and ash in the combustion chamber. The hollow tubes may be formed in arcs or rings in planes perpendicular to the longitudinal axis of the combustion chamber, and spacer rings may be positioned between each ring.Type: GrantFiled: December 22, 1992Date of Patent: May 3, 1994Assignee: Halliburton CompanyInventor: Linza J. Jones
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Patent number: RE40512Abstract: A convective cooling apparatus cools an electronic device including at least one heat-generating component and enclosed in a case having cooling medium such as air or fluid therein. The convective cooling apparatus neither attempts to increase the velocity of flow in the cooling medium nor replaces the cooling medium with other material as prior art cooling apparatus did. Instead, it utilizes the instability which is inherent in the flow of the cooling medium. In the convective cooling apparatus, by using a driver for generating a signal tuned to the characteristic frequency of the flow, a an acoustic vibrator is driven to provide acoustic waves. The acoustic waves induce resonance of flow, which renders the cooling medium vigorously mixed, which, in turn, enhances the heat dissipation from the device.Type: GrantFiled: June 18, 2004Date of Patent: September 23, 2008Assignees: Samsung Electronics Co., Ltd., Korea Institute of Science and TechnologyInventors: Seo Young Kim, Byung Ha Kang, Jin Wook Paek, Sung Ki Kim