Patents by Inventor Etienne Werlen

Etienne Werlen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210317951
    Abstract: Device for filling pressurized gas tanks, particularly hydrogen tanks of vehicles, comprising a fluid transfer circuit comprising an upstream end having a plurality of pressurized fluid sources and a downstream end comprising at least two dispensers, each designed to be connected to different tanks to be filled, each source comprising a fluid outlet connected to an outlet valve, at least some of the outlet valves being connected in parallel to each of the at least two dispensers via at least two parallel transfer pipes.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 14, 2021
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Etienne WERLEN, Clemence DEVILLIERS
  • Patent number: 11079067
    Abstract: The present invention is to provide a hydrogen refueling system capable to cool down the H2 pre-cooling heat exchanger fast enough when a FCV enters the HRS, so that there is no or very minimal waiting time for the customer before starting refueling. A hydrogen refueling system including a cryogenic fluid tank that stores a cryogenic fluid, a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the cold and/or cryogenic fluid provided from the cryogenic fluid tank, an inlet line that sends the cold and/or cryogenic fluid to the heat exchanger from the cryogenic fluid tank, an outlet line that collects the cryogenic fluid fed from the heat exchanger, and an injection valve that is provided in the inlet line.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: August 3, 2021
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Etienne Werlen, Thierry Ott
  • Patent number: 11079069
    Abstract: The present invention is to provide a hydrogen refueling system capable to cool down the H2 pre-cooling heat exchanger fast enough when a FCV enters the HRS, so that there is no or very minimal waiting time for the customer before starting refueling. A hydrogen refueling system includes a chiller including a cooling unit that cools a circulating refrigerant by a cooling medium, a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the circulating refrigerant provided from the chiller, a circulation line that circulates the circulating refrigerant between the cooling unit and the heat exchanger, a chiller compressor that is provided in the chiller; a cold generation valve that is provided close to an inlet of the heat exchanger in the circulation line.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: August 3, 2021
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Etienne Werlen, Thierry Ott
  • Publication number: 20210222832
    Abstract: Station for filling one or more tank(s) with pressurized gas, in particular pressurized hydrogen, comprising at least two pressurized gas source stores, a transfer pipe having an upstream end connected parallel to the source stores and a downstream end intended to be connected to a tank to be filled, the station comprising a valve assembly for controlling the transfer of gas between the sources and the tank to be filled and an electronic controller connected to the valve assembly and configured to control the valve assembly, the electronic controller being configured to implement successive transfers of gas between the source stores and the tank to be filled via successive pressure balancing sequences, the electronic controller being configured to determine the temperature attained by the gas in the source stores or by the source stores during transfers of gas and, when said attained temperature is below a determined threshold, to prevent or to interrupt this transfer of gas or to reduce the flow of gas trans
    Type: Application
    Filed: January 20, 2021
    Publication date: July 22, 2021
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Laurent ALLIDIERES, Mathilde WEBER, Etienne WERLEN
  • Patent number: 10920933
    Abstract: A device and process for refuelling containers with pressurized gas comprising a pressurized gas source, a transfer circuit intended to be removably connected to a container, the device comprising a refrigeration system for cooling the gas flowing from the gas source prior to its entering into the container and comprising a refrigerant cooling loop circuit comprising, arranged in series, a compressor, a condenser section, an expansion valve and an evaporator section, the refrigeration system comprising a cold source in heat exchange with the condenser section and a heat exchanger located in the transfer circuit and comprising a heat exchange section between the gas flowing in the transfer circuit and the evaporator section, the device comprising an electronic controller configured to switch the refrigeration system in first standby mode when the device is not refuelling a container wherein the compressor is switched off when the temperature of the heat exchanger is equal or below a predefined first standby te
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: February 16, 2021
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Etienne Werlen, Marcus Buck
  • Publication number: 20200206686
    Abstract: A process for purifying a feed gas stream containing at least 90% of CO2, at least 20% RH and at least one impurity chosen from chlorinated, sulfur-bearing, nitrated or fluorinated compounds is provided. The process includes a) subjecting the feed gas stream to catalytic oxidation producing a stream containing at least one of HCl, NOx, SOx or hydrofluoric acid; b) maintaining the temperature of the gas stream above the highest value between the dew points of water and the acid(s) contained in the gas; c) removing at least a part of the acid impurities by bringing the gas stream into contact with a corrosion-resistant heat exchanger to condense the acid compounds while regulating the temperature of the gas stream exiting below the dew point of water; and d) separating the acid condensates with a corrosion-resistant separator in such a way as to produce a CO2-enriched gas stream.
    Type: Application
    Filed: July 13, 2018
    Publication date: July 2, 2020
    Inventors: Guillaume RODRIGUES, Philippe ARPENTINIER, Aurélien FRANCO, Rémi JABES, François LAGOUTTE, Laurent PERRU, Etienne WERLEN
  • Publication number: 20200072417
    Abstract: The present invention is to provide a hydrogen refueling system capable to cool down the H2 pre-cooling heat exchanger fast enough when a FCV enters the HRS, so that there is no or very minimal waiting time for the customer before starting refueling. A hydrogen refueling system including a cryogenic fluid tank that stores a cryogenic fluid, a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the cold and/or cryogenic fluid provided from the cryogenic fluid tank, an inlet line that sends the cold and/or cryogenic fluid to the heat exchanger from the cryogenic fluid tank, an outlet line that collects the cryogenic fluid fed from the heat exchanger, and an injection valve that is provided in the inlet line.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 5, 2020
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des procedes Georges Claude
    Inventors: Etienne WERLEN, Thierry OTT
  • Publication number: 20200063917
    Abstract: The present invention is to provide a hydrogen refueling system capable to cool down the H2 pre-cooling heat exchanger fast enough when a FCV enters the HRS, so that there is no or very minimal waiting time for the customer before starting refueling. A hydrogen refueling system includes a chiller including a cooling unit that cools a circulating refrigerant by a cooling medium, a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the circulating refrigerant provided from the chiller, a circulation line that circulates the circulating refrigerant between the cooling unit and the heat exchanger, a chiller compressor that is provided in the chiller; a cold generation valve that is provided close to an inlet of the heat exchanger in the circulation line.
    Type: Application
    Filed: December 6, 2016
    Publication date: February 27, 2020
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Etienne WERLEN, Thierry OTT
  • Publication number: 20200041072
    Abstract: A device and process for refuelling containers with pressurized gas comprising a pressurized gas source, a transfer circuit intended to be removably connected to a container, the device comprising a refrigeration system for cooling the gas flowing from the gas source prior to its entering into the container and comprising a refrigerant cooling loop circuit comprising, arranged in series, a compressor, a condenser section, an expansion valve and an evaporator section, the refrigeration system comprising a cold source in heat exchange with the condenser section and a heat exchanger located in the transfer circuit and comprising a heat exchange section between the gas flowing in the transfer circuit and the evaporator section, the device comprising an electronic controller configured to switch the refrigeration system in first standby mode when the device is not refuelling a container wherein the compressor is switched off when the temperature of the heat exchanger is equal or below a predefined first standby te
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges Claude
    Inventors: Etienne WERLEN, Marcus BUCK
  • Publication number: 20200039811
    Abstract: A device for refuelling containers with pressurized gas, comprising a pressurized gas source, a transfer circuit intended to be removably connected to a container, the device comprising a refrigeration system for cooling the gas flowing from the gas source prior to its entering into the container, the refrigeration system comprising a refrigerant cooling loop circuit comprising, arranged in series, a compressor, a condenser section, an expansion valve and an evaporator section, the refrigeration system comprising a cold source in heat exchange with the condenser section and a heat exchanger located in the transfer circuit, the device comprising an electronic controller connected to the expansion valve and configured for controlling cooling power produced by the refrigeration system via the control of the opening of the expansion valve, the device comprising a differential temperature sensor system measuring the difference between the temperature of the refrigerant in the refrigerant cooling loop circuit at th
    Type: Application
    Filed: July 30, 2019
    Publication date: February 6, 2020
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Etienne WERLEN, Marcus BUCK
  • Publication number: 20200041070
    Abstract: A device and process for refuelling containers comprising a pressurized gas source, a transfer circuit intended to be removably connected to a container, the device comprising a refrigeration system comprising a refrigerant cooling loop circuit comprising, arranged in series, a compressor, a condenser section, an expansion valve and an evaporator section, the refrigeration system comprising a cold source in heat exchange with the condenser section and a heat exchanger located in the transfer circuit, the refrigerant cooling loop circuit comprising a bypass conduit comprising an upstream end connected to the outlet of the compressor and a downstream end connected to the refrigerant cooling loop circuit upstream the compressor inlet, the device further comprising a bypass regulating valve for controlling the flow of refrigerant flowing into the by-pass conduit, the device comprising a pressure sensor for sensing the refrigerant pressure in the cooling loop circuit between the compressor inlet and the heat excha
    Type: Application
    Filed: July 30, 2019
    Publication date: February 6, 2020
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges Claude
    Inventors: Etienne WERLEN, Marcus BUCK
  • Publication number: 20200041071
    Abstract: A device and process for refuelling containers with pressurized gas comprising a pressurized gas source, a transfer circuit comprising one upstream end, the device comprising a refrigeration system for cooling the gas flowing from the gas source prior to its entering into the container, the refrigeration system comprising a refrigerant cooling loop circuit comprising, arranged in series, a compressor, a condenser section, an expansion valve and an evaporator section, the refrigeration system comprising a cold source in heat exchange with the condenser section and a heat exchanger located in the transfer circuit and comprising a heat exchange section between the gas flowing in the transfer circuit and the evaporator section, the refrigerant cooling loop circuit comprising a bypass conduit comprising an upstream end connected to the outlet of the compressor and a downstream end connected to the refrigerant cooling loop circuit upstream the compressor inlet and bypassing the condenser section and expansion valve
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Etienne WERLEN, Marcus BUCK
  • Patent number: 7445040
    Abstract: A heat exchange fin spacer. The fin may be sandwiched between two plates in a brazed-plate heat exchanger. The fin is based upon a corrugated product having wave legs which, when mounted, define flow channels for a gas to be condensed. The fin has at least one condensed liquid drainage channel on the wave legs and deviation elements that drain the liquid towards at least one lateral edge of the wave legs. The deviation elements are provided with at least one leading edge and/or at least one inclined trailing edge. The invention is suitable for use in the main heat exchanger of an air separation unit.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: November 4, 2008
    Assignee: L'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Claire Szulman, Etienne Werlen, Fabienne Chatel
  • Publication number: 20080245651
    Abstract: A distillation installation comprises a cross-corrugated packing module formed from strips of sheet material, comprising corrugations (8) that form alternately first and second main peaks (10; 12), the corrugations (8) defining channels (14) having a general orientation (Dc) that is inclined to a general flow direction (Df) of a liquid. The strip 2 comprises adjacent rows (R) of inverted portions (22) that lie in the cross section of a channel (14). The strip defines a peak length (LC) between the said rows (R) and an inverted portion length (LPI).
    Type: Application
    Filed: May 30, 2005
    Publication date: October 9, 2008
    Inventors: Etienne Werlen, Francois Leclercq, Gilles Lebain
  • Publication number: 20080017497
    Abstract: This distillation column comprises a cross-corrugated packing module formed from strips having corrugations that define channels (14), each channel lying between two main peaks (12; 10) and each channel having two channel legs (16) that are joined together by a top main peak (10; 12). The strip (2) comprises an inverted portion (22) which lies within the cross section of one of the channels (14) and which includes a first intermediate peak (26) oriented in the opposite direction to the top main peak (10; 12). The inverted portion (22) includes a second intermediate peak (28; 30) oriented in the direction of the top main peak (10; 12). Application to air distillation installations.
    Type: Application
    Filed: May 30, 2005
    Publication date: January 24, 2008
    Applicant: L'Air Liquide, Societe Anonyme A Directoire Et Conseil De Surviellance Pour L'Etude Et L'Expl....
    Inventors: Etienne Werlen, Francois Leclercq, Gilles Lebain
  • Patent number: 7147215
    Abstract: A corrugated strip made of sheet material, which may be used in a packing module. The peaks and the troughs of the strip, when viewed in a side view, define lines which have a general sloping direction relative to the direction the fluid flow. Each strip includes a spanning zone and a transition zone. In the transition zone, each peak/trough line extends inside a specific area centered on a curve which extends tangentially from the peak/trough line of the spanning zone. The structured interface region between the spanning and transition zones helps to reduce head loss across the strip.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: December 12, 2006
    Assignee: L'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Georges Claude
    Inventors: Jean-Yves Lehman, Etienne Werlen, Gilles Lebain
  • Patent number: 7059397
    Abstract: The invention concerns a heat exchanger which includes a stack of plates defining passages, containing corrugated fins which include a transverse section with repeated corrugated pattern extending between two upper and lower end planes. The pattern includes a base corrugated pattern that includes corrugated legs linked to corrugated summits and corrugated bases, this base pattern being modified by a sub-pattern which defines, between at least some corrugated legs, additional leading edges located at an intermediate level between the end planes. The invention is applicable to cryogenic gas—gas heat exchangers.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: June 13, 2006
    Assignee: L'Air Liquide, Societe Anonyme A Directoire et Conseil de Surveillance Pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Fabienne Chatel, Gilles Lebain, Claire Szulman, Etienne Werlen
  • Patent number: 7024907
    Abstract: A folding-pressing operation is carried out on the strip (17) in successive steps, by means of two opposed dies (11,12) with a relative movement alternating between coming together and moving apart, these dies having active surfaces (11,12) which are substantially conjugate with the two faces of the corrugation.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: April 11, 2006
    Assignee: L'air Liquide - Societe Anonyme a Directoire et Conseil de Surveillance Pour L'Etude et L'Exploitation des Procedes Georges Claude
    Inventors: Jean-Claude Beauvois, Son Ha Giang, Gilles Lebain, Etienne Werlen
  • Publication number: 20050121181
    Abstract: A heat exchange fin spacer. The fin may be sandwiched between two plates in a brazed-plate heat exchanger. The fin is based upon a corrugated product having wave legs which, when mounted, define flow channels for a gas to be condensed. The fin has at least one condensed liquid drainage channel on the wave legs and deviation elements that drain the liquid towards at least one lateral edge of the wave legs. The deviation elements are provided with at least one leading edge and/or at least one inclined trailing edge. The invention is suitable for use in the main heat exchanger of an air separation unit.
    Type: Application
    Filed: January 10, 2003
    Publication date: June 9, 2005
    Inventors: Claire Szulman, Etienne Werlen, Fabienne Chatel
  • Publication number: 20050040549
    Abstract: The invention concerns a corrugated packing module for treating a fluid delimited by two channels (18). It comprises a running zone (4) whereof the channels define ridge lines (26) having a global sloping direction (D1) relative to a general direction of circulation (Df) of the fluid. The strip comprises a transition zone (6, 8) adjacent to the running zone (4). Each ridge line (26) of the transition zone (6, 8) extends inside a specific zone centered on a curve (A) which extends tangentially the ridge line (26) of the running zone (4). The radial width (Lr) is 10% of the corresponding radius of curvature of the curve (A). The radius of curvature (Rc) of the curve (A) is at all points 1.5 times greater than the hydraulic diameter (Dh) of a channel (18). The invention is applicable to air distillation columns.
    Type: Application
    Filed: December 6, 2002
    Publication date: February 24, 2005
    Inventors: Jean-Yves Lehman, Etienne Werlen, Gilles Lebain