Vapor Condensation Vacuum Diffusion Type Patents (Class 417/152)
  • Patent number: 8172548
    Abstract: A driving agent vacuum pump configured as a micropump is presented. The vacuum pump includes an evaporation chamber and a pumping chamber, which are separated by a jet arrangement. The jet arrangement includes a planar arrangement of at least one jet running vertically in depth between two plates. The two plates cover the evaporation chamber and the pumping chamber about the jet arrangement. An opening is provided in the pumping chamber above the jet arrangement for taking in an agent to be pumped. A second opening is provided for driving out a compressed gas below the jet arrangement. A connection is provided between the evaporation chamber and the pumping chamber through which a condensed driving agent is returned.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: May 8, 2012
    Assignee: Bayer Technology Service GmbH
    Inventors: Marco Doms, Jorg Muller
  • Patent number: 7931019
    Abstract: A self-powered pump for heated liquid is provided. The pump includes an airtight container for containing the heated liquid. A heated liquid inlet pipe extends upwardly into the container such that its end is within the container. A heated liquid outlet is lower than the end of the inlet pipe. A breathing pipe extends upwardly into the container such that its end is within the container and is higher than both of the outlet and the end of the inlet pipe but lower than an interior side of the container top. An opposite end of the breathing pipe is outside the container, lower than the container base, and is received by an open container such that the opposite end can become submerged in heated liquid accumulated within the open container during pump operation. A fluid or liquid heating system incorporating the self-powered pump may operate without external power for the pump.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: April 26, 2011
    Inventor: Huazi Lin
  • Patent number: 7206605
    Abstract: A radio receiver disclosed is composed of a signal processing part, which includes a receive band pass filter 2 and a receive low noise amplifier 3, to process receive signal and discharge gas with time, the signal processing part being cooled by the cooling means 6, wherein the radio receiver is provided with an airtight container 10 that operates as inner sealing means to seal the receive band pass filter 2 and the receive low noise amplifier 3 to retain the gas, and a vacuum container 5 that operates as outer sealing means to seal in vacuum the airtight container 10 such that an interspace 12 between that and the airtight container 10 forms a vacuum insulating space to insulate in vacuum the airtight container 10 from outside.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: April 17, 2007
    Assignee: NEC Corporation
    Inventor: Wataru Hattori
  • Patent number: 6955695
    Abstract: This invention discloses improvements on previous inventions for catalytic conversion of coal and steam to methane. The disclosed improvements permit conversion of petroleum residua or heavy crude petroleum to methane and carbon dioxide such that nearly all of the heating value of the converted hydrocarbons is recovered as heating value of the product methane. The liquid feed is distributed over a fluidized solid particulate catalyst containing alkali metal and carbon as petroleum coke at elevated temperature and pressure from the lower stage and transported to the upper stage of a two-stage reactor. Particulate solids containing carbon and alkali metal are circulated between the two stages. Superheated steam and recycled hydrogen and carbon monoxide are fed to the lower stage, fluidizing the particulate solids and gasifying some of the carbon. The gas phase from the lower stage passes through the upper stage, completing the reaction of the gas phase.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: October 18, 2005
    Assignee: Petro 2020, LLC
    Inventor: Nicholas Charles Nahas
  • Patent number: 6767192
    Abstract: A vapor jet vacuum pump includes a housing having an inlet port and a foreline conduit, a vapor jet assembly within the housing, a vapor source for supplying a vapor to the vapor jet assembly, and at least one ejector stage. The ejector stage includes an ejector nozzle mounted in the foreline conduit and a fluid inlet located external to the housing and coupled by an ejector conduit to the ejector nozzle. The fluid inlet may be an air inlet for drawing in air at atmospheric pressure. The ejector stage may be driven by a backing pump coupled to the foreline conduit.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: July 27, 2004
    Assignee: Varian, Inc.
    Inventor: Marsbed Hablanian
  • Publication number: 20030210986
    Abstract: A combination including a diffusion pump and a reservoir for working fluid positioned remotely from the pump and connected to the diffusion pump via a valve and pipework.
    Type: Application
    Filed: February 5, 2003
    Publication date: November 13, 2003
    Inventors: John Hutchinson, Jonathan Lawson
  • Patent number: 6517320
    Abstract: A hose siphon for cleaning sand, dirt and other particulate impurities from tanks or vessels. The hose siphon typically includes an aspirator conduit for receiving the pressurized water and a main conduit for receiving the pressurized water from the aspirator conduit. The main conduit includes a suction end for fluid communication with the tank or vessel and a discharge end for discharging the pressurized water from the main conduit. As the pressurized water flows through the aspirator conduit and into the main conduit, sand filtering medium and trapped impurities are aspirated from the vessel into the suction end of the main conduit, and discharged from the discharge end of the main conduit with the pressurized water. A water discharge hose is provided in fluid communication with the aspirator conduit for distributing a portion of the pressurized water to the tank or vessel and maintaining a suspension or slurry of the sand medium and particulate impurities in the tank or vessel.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: February 11, 2003
    Inventor: Joel M. Reynolds
  • Publication number: 20030026707
    Abstract: A hose siphon for cleaning sand, dirt and other particulate impurities from tanks or vessels. The hose siphon typically includes an aspirator conduit for receiving the pressurized water and a main conduit for receiving the pressurized water from the aspirator conduit. The main conduit includes a suction end for fluid communication with the tank or vessel and a discharge end for discharging the pressurized water from the main conduit. As the pressurized water flows through the aspirator conduit and into the main conduit, sand filtering medium and trapped impurities are aspirated from the vessel into the suction end of the main conduit, and discharged from the discharge end of the main conduit with the pressurized water. A water discharge hose is provided in fluid communication with the aspirator conduit for distributing a portion of the pressurized water to the tank or vessel and maintaining a suspension or slurry of the sand medium and particulate impurities in the tank or vessel.
    Type: Application
    Filed: August 6, 2001
    Publication date: February 6, 2003
    Inventor: Joel M. Reynolds
  • Patent number: 6099266
    Abstract: An air pump (10) having a separation chamber (15) defined by a top wall (11), a bottom wall (12) and generally annular side walls (13). A liquid entry tube (24) configured to draw air into a stream of liquid passing through the liquid entry tube is coupled to the separation chamber so that the air/liquid mixtures rotates within the separation chamber. The rotation of the mixture causes air to accumulate within a central zone (30) and the liquid to accumulate about a peripheral zone (31). The continued flow of the mixture causes the accumulating air to become pressurized where it is released through an air exit tube (20) in fluid communication with the central zone of the separation chamber. The liquid is expelled through a liquid exit port (18).
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: August 8, 2000
    Assignee: Johnson Research & Development Company, Inc.
    Inventors: Lonnie G. Johnson, Shane Matthews
  • Patent number: 5993166
    Abstract: A diffusion pump having a hollow outer body and a heater to heat working fluid that is used in the pump. The hollow outer body includes an outlet for connection to a backing pump and an inlet for communication with the chamber to be evacuated. A sump contains the working fluid and a reservoir for the working fluid surrounds the sump as an integral part of the hollow body. The surrounding reservoir decreases service intervals and reduces heat up and cool down time. The reservoir can be formed of two cylindrical surfaces concentric with the central axis of the pump.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: November 30, 1999
    Assignee: The BOC Group plc
    Inventor: Graeme Huntley
  • Patent number: 5913662
    Abstract: A diffusion pump for evacuating a chamber is provided with a hollow outer body including an outlet for connection to a backing pump and a base for containing a working fluid. A vapor chimney extends from the base within the hollow outer body and includes at least two spaced apart jet stages. The working fluid is heated when present in said base. Two or more inlets are formed in the hollow outer body for communicating with said at least one chamber to be evacuated. The presence of the two inlets provides the possibility of differential pumping.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: June 22, 1999
    Assignee: The BOC Group plc
    Inventor: Graeme Huntley
  • Patent number: 5281245
    Abstract: This invention relates to a flue gas treatment apparatus for treating flue gas in which a contaminant in the form of fine solid particles and a gaseous air pollutant are mixed. In the flue gas treatment apparatus, a gas suction portion (29a) for drawing flue gas therethrough is formed in a funnel (27), jet nozzles (30a,30b,30c) for jetting out compressed gas along an inner peripheral wall of the funnel 27 are provided adjacent the gas suction port (29a), and a discharge port (27a) is formed in a lower part of the funnel (27).
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: January 25, 1994
    Assignee: Sanko' Industry Corporation
    Inventor: Yun Suk Yang
  • Patent number: 5137429
    Abstract: A high vacua diffusion pump for use in a vacuum system including a chamber to be evacuated and a positive displacement pump. The diffusion pump includes a pump body structure having an open upper end and a closed lower end. A boiler and jet assembly is yieldably supported within the pump body and produces jet streams that impel the residual air molecules through the exit port. A ceramic heat break having a labyrinth passage therethrough positively separates the temperature of the condensing wall surface from the boiler temperature. A cooling system permits selective rapid cooling of the boiler and is openable to permit rapid re-heating of the boiler. In one embodiment, the pump includes a room temperature condensing surface, and in another embodiment a non-room temperature condensing surface is provided.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: August 11, 1992
    Assignee: Spectrameasure Inc.
    Inventor: John H. Broadhurst
  • Patent number: 5002464
    Abstract: The subject invention provides a double buffer vacuum system having a high vacuum inner chamber, a rough vacuum outer chamber, two rough vacuum pumps, a high vacuum pump, and two vacuum gauges. The double buffer vacuum system is adaptable for use in equipment requiring high or ultrahigh vacuum. The subject invention facilitates manufacturing and reduces the cost of materials used in the walls of the chambers. In addition, this system minimizes vacuum leakage through its use of a two vacuum system.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: March 26, 1991
    Inventor: Hyeong G. Lee
  • Patent number: 4845360
    Abstract: A counterflow helium mass spectrometer leak detector in which a helium sample passes in a reverse direction through a diffusion pump to a mass spectrometer for measurement. The diffusion pump includes a conventional foreline and a second foreline provided with an ejector stage. A test sample is coupled from a test port through a bypass valve to the conventional foreline in a high sensitivity mode and is coupled to the second foreline in a low sensitivity mode. In the low sensitivity mode, the bypass valve is closed. An apertured control plate in the diffusion pump controls the relative reverse rates of duffusion from each foreline to the diffusion pump inlet by controlling the rates of vapor flow an annular pumping stages and to the ejector stage. The ejector stage includes a nozzle for directing a stream of vapor into the second foreline so as to inhibit flow of helium into the diffusion pump and establish a lower reverse diffusion rate at the second foreline.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: July 4, 1989
    Assignee: Varian Associates, Inc.
    Inventor: Arthur A. Landfors
  • Patent number: 4545739
    Abstract: Several expedients can start-up a hydrokinetic amplifier powered by operating vapor at subatmospheric pressure. One expedient connects an evacuated region to the discharge region of suction chamber 13 so that subatmospheric pressure vapor flows through vapor input nozzle 12 and into the suction chamber. At this time, liquid admitted through nozzle 11 forms a free liquid jet 20 so that vapor impinges on and condenses in jet 20. Once the collapse of condensing vapor produces a suction in chamber 13, the amplifier starts and the evacuated region disconnects from chamber 13. By another expedient, super atmospheric pressure vapor is condensed in jet 20 to establish a suction, whereupon the vapor supply is switched to subatmospheric pressure operating vapor that is drawn in by the suction produced by collapse of the start-up vapor. Another expedient uses high pressure liquid to produce a low pressure entrainment jet for drawing subatmospheric pressure operating vapor into suction chamber 13.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: October 8, 1985
    Assignee: Helios Research Corp.
    Inventor: Carl D. Nicodemus
  • Patent number: 4361418
    Abstract: Water contamination of the oil in vacuum pumps of high vacuum systems is a major problem in maintaining efficient operation of those pumps. The problem is especially acute where a system includes an evacuated work chamber that must be repeatedly opened for loading products into and unloading them from that chamber where the ambient atmosphere has high humidity. The invention involves utilizing first stage mechanical vacuum pump means in conjunction with final stage high vacuum diffusion pump means, and a cryocoil with fast defrost capability located in the vacuum duct leading from the work chamber to the pumps, in combination with an auxiliary low capacity vacuum pump and a flip/flop valving arrangement which connects the discharge side of the diffusion pump selectively to the first stage mechanical pump or to the auxiliary pump.
    Type: Grant
    Filed: May 6, 1980
    Date of Patent: November 30, 1982
    Assignee: Risdon Corporation
    Inventor: Andrew Tscheppe
  • Patent number: 3943330
    Abstract: Fluid heating arrangements and methods are provided wherein liquid is caused to flow through a fluid permeable electrical resistance heater body. Prior to the heater body, the liquid passes through a fluid permeable flow control member which offers a uniform resistance to the entire flow of the liquid. Static pressure head of the fluid varies over the entry surface of the flow control member, and the permeability of the combination of the heater body and the flow control member are such as to cause a pressure drop in the fluid greater than the variations in static pressure head of the fluid at the entry surface of the flow control member. This promotes a uniform flow of the fluid through the heater body even in the presence of significant differences in static pressure head over the fluid entry surface of the flow control member.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: March 9, 1976
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: James Francis Pollock, Peter Douglas Dunn, Graham Rice, Basil Dixon Power