Patents Examined by Susanne C. Tinker
  • Patent number: 5836258
    Abstract: A method and apparatus for incinerating loose waste material in which the loose waste material is introduced into a furnace chamber to form a layer in the bottom of the furnace chamber. The layer of loose waste material is subjected to the direct action of technical-grade oxygen, preferably in less than stoichiometric amounts, with the oxygen fed at least at the speed of sound. The oxygen is supplied utilizing a plurality of lances distributed in the furnace chamber. Heat produced by combustion of the waste material melts incombustible constituents of the waste material. Residual unburnt combustible gases can be fed through an outlet stack to a secondary combustion chamber.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: November 17, 1998
    Assignee: Von Roll Umwelttechnik AG
    Inventors: Hans Ruegg, Thomas Ungricht
  • Patent number: 5836257
    Abstract: A circulating fluidized bed processor has a processor enclosure at least partially defined by a front wall and a rear wall spaced away from the front wall. A bottom wall is connected between the front and rear walls and a mechanism is provided for supplying primary air through the bottom wall for fluidizing a circulating bed in the enclosure. Another mechanism is provided for recirculating the bed from a top of the enclosure back to the enclosure. One or more secondary air plenum(s) are provided in the enclosure between the front and rear walls for supplying secondary air into the fluidized bed, above the bottom wall, so that secondary air reaches deep into the enclosure. The plenum(s) are formed of a waterwall which has a plurality of openings therein to allow communication of gases and solids therethrough from one side of the waterwall to the other.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: November 17, 1998
    Assignee: McDermott Technology, Inc.
    Inventors: Felix Belin, David J. Walker
  • Patent number: 5832845
    Abstract: A modular system using molten aluminum alloy for degradation of wastes to innocuous molecular products using a central molten alloy heat source unit and separate reactor units for differing wastes. The molten alloy is pumped to the reactor units and returns by gravity flow to the central heat source which is maintained at about 850 to 950 degrees centigrade.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 10, 1998
    Inventor: Anthony S. Wagner
  • Patent number: 5832848
    Abstract: A fluidized bed heat treatment apparatus is provided to be heated by combusting fuel gas in a manner to minimize or prevent the exhaust of carbon monoxide, the apparatus including a retort containing refractory particles to be fluidized, a first inlet in a lower region of the retort for introducing fuel/air mixture into the retort, a second inlet in a lower region of the retort for introducing secondary air into the retort, a temperature sensor located above the first and second inlets, a flame initiator located above the refractory particles, an externally located mixer to mix fuel and air in desired proportions and to supply same to the first inlet, and a control device arranged to control said externally located mixer in response to temperatures sensed by said temperature sensor whereby when the temperature sensor is below a predetermined temperature indicative of the bed being substantially not fluidized, a stoichiometric fuel/air mixture is supplied to the first inlet and when the temperature sensor sens
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: November 10, 1998
    Assignee: Quality Heat Treatment Pty, Ltd.
    Inventors: Ray William Reynoldson, Andrew Simpson Fitchett
  • Patent number: 5829264
    Abstract: An air conditioner including at least two kinds of refrigerant which are circulated in a refrigerant circuit and have different characteristics, a calculator for calculating the driving capacity of a compressor in accordance with a request load of the refrigerant circuit and outputting a driving capacity signal representing the driving capacity, a driving unit for controlling the driving capacity of the compressor so as to obtain the driving capacity corresponding to the driving capacity signal of the calculator, and correcting means for correcting the driving capacity signal so as to reduce the driving capacity when the refrigerant pressure in the refrigerant circuit exceeds a first pressure value.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: November 3, 1998
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Shigeya Ishigaki, Mikiyasu Sinnsi, Tomohito Koizumi, Katuyuki Tuno, Takahiro Suzuki, Masanori Akutu, Norio Abukawa
  • Patent number: 5826519
    Abstract: A hearth particle bed system is made up of channel members which form an inclined surface upon which a layer of hearth particles downwardly flow. An air inlet is provided underneath the channel member and apertures are provided in the channel members for redistributing the air flow through the hearth particles. A hearth particle incinerating furnace contains the above-described hearth particle bed system and further contains a combustion chamber and a mechanism for removing used hearth particles and combustion residues. This hearth particle incinerating furnace enables combustion air to be uniformly distributed in the hearth particle bed and can operate in a stable fashion for a long period of time without problems associated with pluggage of the air inlets.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: October 27, 1998
    Inventor: Shigeru Saitoh
  • Patent number: 5826438
    Abstract: According to the present invention, in an expansion valve integrated with a electromagnetic valve, there are provided an inlet refrigerant path, a restriction path for decompressing and expanding the refrigerant from the inlet refrigerant path, a valve element for adjusting an opening degree of the restriction path, a diaphragm operating unit, and an outlet refrigerant path for supplying the refrigerant decompressed and expanded in the restriction path to an evaporator. The outlet refrigerant path is opened or closed by the electromagnetic valve 200. When the electromagnetic valve 20 is closed, the diaphragm operating unit operates to close the valve element in the restriction path, based on the refrigerant pressure between the valve element of the electromagnetic and the restriction path. In this way, it is possible to reduce the noise of the refrigerant when the electromagnetic valve is closed.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: October 27, 1998
    Assignee: Denso Corporation
    Inventors: Shigeji Ohishi, Yoshio Miyata
  • Patent number: 5826439
    Abstract: A method and circuit are provided for on/off control of the compressor of a motor vehicle air conditioner, in which the compressor is shut off when the evaporator temperature measured by an evaporator temperature sensor drops below a presettable shutoff temperature value located above C. The shutoff temperature value is set to fall as a function of the evaporator blower power and/or the temperature of the air drawn in by the evaporator blower with rising blower power or with rising intake air temperature. The circuit includes a control stage whose output signal is fed to an on/off switching element of the compressor and depends on the voltage level at an input node, which varies with the supply voltage of the evaporator blower and/or the output voltage of the intake air temperature sensor.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: October 27, 1998
    Assignee: Behr GmbH & Co.
    Inventors: Wilhelm Baruschke, Karl Lochmahr, Markus Speer
  • Patent number: 5823123
    Abstract: In a combustion system for particulate fuel including a combustion chamber with an opening at the base of the combustion chamber and a vertical discharge duct pushing the particulate fuel through the opening there is provided a hopper spaced from the combustion chamber and a transportation duct for carrying the particulate fuel from hopper to the discharge duct. In the transportation duct there is provided an auger shaft with a first long auger flight rotated to carry the material from the hopper to the discharge duct. A second shorter flight is arranged on a side of the discharge duct opposite to the hopper in a short tube portion and is rotated in the direction to feed the material back toward the discharge duct. The two flight portions cooperate in pushing the material into the vertical discharge duct as the shaft of the flight is rotated.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: October 20, 1998
    Assignee: Decker Mfg.
    Inventor: Clarence Waldner
  • Patent number: 5822999
    Abstract: Improved refrigeration system, in particular for domestic use, with a compressor (2), a condenser (3), an evaporator (4) and a valve (5) arranged between the condenser (3) and evaporator (4). The system includes a three-way valve (6) between the condenser (3) and the compressor (2) which establishes a bypass (7) between the compressor (2) and the suction pipe (8) of the system (1) during stoppage of the compressor (2) which blocks the reflux of refrigerant contained in the condenser (3) to the compressor.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: October 20, 1998
    Assignee: Electrolux Espana, S.A.
    Inventor: Miguel Jornet Salo
  • Patent number: 5822996
    Abstract: A heat pump system has a separate outdoor coil which is mounted below the primary outdoor coil and connected in parallel with it by valves. On system start up in the heating mode, the inlet of the auxiliary coil is closed, and the outlet is opened so that compressor vacuum will boil off the more volatile, high pressure components thus filling the system. The outlet valve is then closed trapping the low pressure component in the auxiliary coil. In a second embodiment, the accumulator is utilized to assist the auxiliary coil in vacuum separation of the refrigerant blend. Variants include blocking flow through the expansion valve on start up.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: October 20, 1998
    Assignee: Carrier Corporation
    Inventors: Tobias H. Sienel, Dennis R. Pandy
  • Patent number: 5823124
    Abstract: A system of this invention reduces the emission of NO.sub.x and fuel pollutants from a furnace. The system includes a furnace with a chamber for combusting air, oxygen and fuel flows in an approximately stoichiometric proportion. A reburn unit, that can be a port, is coupled to communicate with and receive the combustion exhaust from the chamber. The reburn unit is also coupled to receive a second fuel flow that is added to the exhaust flow at a stoichiometric ratio and temperature at which a reaction occurs to lower the amount of NO.sub.x in the exhaust flow. The reburn unit is coupled to a burnout unit that can be a regenerator or a recuperator, that is coupled to receive an oxidant flow with air and/or oxygen. The oxidant flow combusts fuel in the exhaust flow to prevent emission of this fuel into the atmosphere.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: October 20, 1998
    Assignee: Gas Research Institute
    Inventor: Richard R. Koppang
  • Patent number: 5823122
    Abstract: A system for the production of fuel gas from solid biomass fuels and for the combustion of said fuel gas is disclosed which comprises a gasification zone for producing a fuel gas from a solid biomass fuel, said gasification zone being adapted for connection to a solid biomass fuel supply and to a gasification air supply, a predetermined ignition point, a pathway for conveying fuel gas from the gasification zone to the ignition point, and a combustion air injection device for mixing fuel gas and combustion air at the ignition point to initiate combustion of the fuel gas and the combustion air, and for shaping and directing the flame produced, said device being adapted for connection to a combustion air supply.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: October 20, 1998
    Assignee: Alternative Energy Development, Inc.
    Inventors: Robert A. Chronowski, William L. Woerner
  • Patent number: 5816061
    Abstract: An apparatus and method for controlling the temperature in a refrigerating chamber of a refrigerator by supplying appropriate cooled air to each of the compartments of the refrigerating chamber according to a temperature in each of the compartments. A cooled air controlling plate is provided for controlling the size of the cooled air discharge outlet according to the individual temperatures in the compartments. The cooled air controlling plate is moved in an up and down direction in multiple stages depending on the temperature in the refrigerating chamber to control the cooled air discharge rate to each of the compartments of the refrigerating chamber so as to make the temperature in the refrigerating chamber uniform.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: October 6, 1998
    Assignee: LG Electronics Inc.
    Inventors: Geun Ho Lee, Seung Myung Baek
  • Patent number: 5809912
    Abstract: A heat exchanger and a fluidized bed combustion system and method utilizing same in which the heat exchanger includes a plurality of stacked sections. The sections include an inlet section for receiving the particles and a plurality of stacked sections and are arranged in such a manner that the particles are introduced into an upper level of the sections and pass through these sections to a lower level of sections before returning to the furnace. A portion of the stacked sections contain heat exchange surfaces for removing heat from the particles, and a multi-sectioned outlet compartment is provided to receive the separated particles from the heat exchange sections and directly from the inlet section and pass the particles back to the furnace.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: September 22, 1998
    Assignee: Foster Wheeler Energy, Inc.
    Inventors: Arthur Magne Hansen, Stephen John Goidich
  • Patent number: 5809911
    Abstract: The novel waste treatment system of the invention employs multiple reactor zones for processing heterogeneous waste. In one embodiment, the reactor system (10) includes the following components: first (12) and second (14) solid waste feed subsystems; and liquid waste feed subsystem (16); a plasma torch assembly (18) for heating a first chamber (20) of the reactor system (10); a joule effect heater assembly (22) for heating a second chamber (24); a gaseous effluent processing subsystem (26); a metal discharge recycling subsystem (28); and first (30) and second (32) slag discharge processing subsystems. In an alternative embodiment, each of the reactor zones is heated by joule effect heaters. The reactor system (10) can be operated in an oxidation or reduction mode. In either mode, the reactor system (10) allows for more complete reaction of a variety of heterogeneous waste.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: September 22, 1998
    Assignee: Allied Technology Group, Inc.
    Inventor: Fred Feizollahi
  • Patent number: 5806442
    Abstract: A feeding apparatus for feeding whole tires into a cement kiln comprising a feed opening in the shell of the kiln, a passageway including a sleeve extending within and outside the kiln, an arcuate sector valve device for closing the passageway and timed to open so as to allow the tires to fall into the kiln through the passageway. The sector valve having an outer perforated wall and an inner wall, the perforated wall allowing ambient air to circulate between the outer and inner wall to keep the outer wall cool for contact with the tires. A transfer device is provided for transferring the tires onto the feeding apparatus wherein the transfer device includes fingers while the feeding apparatus includes a fork receiving tray interdigitated with the fingers to pick up the tires as the kiln rotates.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: September 15, 1998
    Assignee: Lafarge Corporation
    Inventors: Ernie Aldred, Ronald Birchard, Donald Courtney, Jacques Denizeau, Christian Gagnon, Jean-Claude Normandin
  • Patent number: 5806444
    Abstract: Waste treatment. The installation for implementing the method comprises: a furnace (1) defining a confinement enclosure (2) for a fluidized bed (3) of particulate matter; means for recirculating the particles of the bed; means (28) for mixing, coating, and drying the recycled particles and the waste; and means for feeding the furnace from the means (28). The invention is applicable to treating moist waste.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: September 15, 1998
    Assignees: FM Industrie, Michel Figueras, Electricite de France
    Inventors: Michel Figueras, Fran.cedilla.ois Baudequin
  • Patent number: 5799592
    Abstract: An exhauster assembly for a solid fuel pulverizer has an exhauster housing defining an inlet opening. A fan rotatably mounts in the exhauster housing and a duct defining an air stream flow path is in fluid connection with the inlet opening. An inlet guide vane assembly is positioned in the duct adjacent the inlet opening. The inlet guide vane assembly has a plurality of first and second guide vanes defining a plurality of the flow channels generally parallel the air stream flow path. The first and second guide vanes are generally planar and arranged generally orthogonally to each other in cross section.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: September 1, 1998
    Assignee: Combustion Engineering, Inc.
    Inventors: Stanley E. Kmiotek, Gregory R. Strich
  • Patent number: 5799499
    Abstract: A unit incorporating a reservoir tank and an expansion valve into a single built-in structure comprises a reservoir tank 10 sealed by a cover 20, and an expansion valve 30 fixed on the cover 20. A refrigerant pipe 40 extending through the cover 20 introduces a refrigerant from a compressor through a condenser into the reservoir tank 10. The refrigerant introduced into the expansion valve 30 through a pipe 50 increases in volume, and then enters an evaporator. After passing the evaporator, the refrigerant in the gaseous phase flows through pipe 62 into the expansion valve 30, then delivers thermal information of the refrigerant to a heat sensitive member of the expansion valve, and travels in a pipe 70 extending into and from the reservoir tank 10. While traveling along the pipe 70, the gaseous refrigerant exchanges heat with the liquid refrigerant stored in the reservoir tank, and then returns to the compressor.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: September 1, 1998
    Assignee: Fujikoki Corporation
    Inventors: Masamichi Yano, Takuji Furuta