Patents by Inventor David Grillot
David Grillot 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).
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Patent number: 10753659Abstract: The invention relates to a method for adjusting a cryogenic refrigeration apparatus including a plurality of liquefiers/refrigerators arranged in parallel in order to cool a single device. The method includes a step of calculating in real time the dynamic mean value of at least one operating parameter for all the liquefiers/refrigerators. The apparatus controlling in real time the at least one valve for controlling the stream of working gas of at least one liquefier/refrigerator in accordance with the difference between the instantaneous values of the parameter relative to said dynamic converge toward said dynamic mean value.Type: GrantFiled: June 5, 2015Date of Patent: August 25, 2020Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Pierre Barjhoux, Jean-Marc Bernhardt, Cindy Deschildre, David Grillot
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Patent number: 10060653Abstract: Method and installation for refrigerating the same application by means of several refrigerators/liquefiers disposed in parallel, the refrigerators/liquefiers in parallel using a working gas of the same nature having a low molar mass, that is to say having a mean total molar mass of less than 10 g/mol such as pure gaseous helium, each refrigerator/liquefier comprising a station for compressing the working gas, a cold box intended to cool the working gas at the output from the compression station, the working gas cooled by each of the respective cold boxes of the refrigerators/liquefiers being put in thermal exchange with the application with a view to supplying cold to the latter, in which a single compression station compresses the working gas for each of the respective separate cold boxes of the refrigerators/liquefiers disposed in parallel, the single compression station comprising only compression machines of the lubricated-screw type and systems for removing oil from the working fluid output from the comType: GrantFiled: August 14, 2012Date of Patent: August 28, 2018Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Jean-Marc Bernhardt, Cindy Deschildre, Eric Fauve, David Grillot
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Patent number: 9766002Abstract: An installation for refrigerating a same application by means of a single refrigerator/liquefier or several refrigerators/liquefiers arranged in parallel, the refrigerator(s)/liquefier(s) using a working gas of the same type having a low molar mass, each refrigerator/liquefier comprising a compression station to compress the working gas, a cold box intended for cooling the working gas at the outlet of the compression station, the compression station comprising only compression machines of the lubricated screw type and systems for removing the oil from the working fluid at the outlet of the compression machines, and the compression station comprises a plurality of compression machines defining several levels of pressure for the working fluid, the compression station comprising at least two compression machines defining at least two levels of pressure increasing above the level of pressure of the fluid at the inlet of the compression station, two main compression machines being arranged in series and defining,Type: GrantFiled: August 14, 2012Date of Patent: September 19, 2017Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges ClaudeInventors: Jean-Marc Bernhardt, Cindy Deschildre, Eric Fauve, David Grillot
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Publication number: 20170219265Abstract: The invention relates to a method for adjusting a cryogenic refrigeration apparatus including a plurality of liquefiers/refrigerators arranged in parallel in order to cool a single device. The method includes a step of calculating in real time the dynamic mean value of at least one operating parameter for all the liquefiers/refrigerators. The apparatus controlling in real time the at least one valve for controlling the stream of working gas of at least one liquefier/refrigerator in accordance with the difference between the instantaneous values of the parameter relative to said dynamic converge toward said dynamic mean value.Type: ApplicationFiled: June 5, 2015Publication date: August 3, 2017Inventors: Pierre BARJHOUX, Jean-Marc BERNHARDT, Cindy DESCHILDRE, David GRILLOT
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Patent number: 9657986Abstract: The invention relates to a method and an installation for producing liquid helium, said installation comprising a cooling/liquefaction device comprising a working circuit that subjects a helium-enriched working fluid to a thermodynamic cycle in order to produce liquid helium, said circuit comprising at least one working fluid compression body and a plurality of heat exchangers. The installation also comprises a plurality of fluid recovery lines having respective upstream ends to be selectively connected to respective reservoirs, and a first collection line having an upstream end connected to the recovery lines and a downstream end connected to a receiving body that can supply the working circuit with a working fluid.Type: GrantFiled: January 12, 2012Date of Patent: May 23, 2017Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges ClaudeInventors: Jean-Marc Bernhardt, David Grillot, Veronique Grabie, Eric Fauve, Michel Bonneton
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Patent number: 9285141Abstract: The invention relates to a method and device for pulsed charge cooling of a component of a Tokamak. The method uses a refrigeration device that subjects a working fluid such as helium to a work cycle including: compression, cooling, and decompression, as well as heat exchange with the member and heating. The refrigeration power produced by the refrigeration device is increased to a relatively high level when the Tokamak is in a plasma generation phase and is decreased to a relatively low level when the Tokamak is no longer in a plasma generation phase. The increase in refrigeration power produced by the refrigeration device is automatically triggered in response to a signal produced during a step for starting plasma in the Tokamak.Type: GrantFiled: February 28, 2011Date of Patent: March 15, 2016Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges ClaudeInventors: Gerald Aigouy, Jean-Marc Bernhardt, Pierre Briend, Eric Fauve, David Grillot, Vincent Heloin
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Patent number: 9272963Abstract: The present invention relates to a process for the purification by adsorption of a feed flow rich in methane and comprising at least carbon dioxide.Type: GrantFiled: December 21, 2011Date of Patent: March 1, 2016Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Jean-Marc Bernhardt, Pierre Briend, David Grillot, Elise Renou, Simon Saulquin, Olivier Weitten
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Publication number: 20140238074Abstract: Method and installation for refrigerating the same application by means of several refrigerators/liquefiers disposed in parallel, the refrigerators/liquefiers in parallel using a working gas of the same nature having a low molar mass, that is to say having a mean total molar mass of less than 10 g/mol such as pure gaseous helium, each refrigerator/liquefier comprising a station for compressing the working gas, a cold box intended to cool the working gas at the output from the compression station, the working gas cooled by each of the respective cold boxes of the refrigerators/liquefiers being put in thermal exchange with the application with a view to supplying cold to the latter, in which a single compression station compresses the working gas for each of the respective separate cold boxes of the refrigerators/liquefiers disposed in parallel, the single compression station comprising only compression machines of the lubricated-screw type and systems for removing oil from the working fluid output from the comType: ApplicationFiled: August 14, 2012Publication date: August 28, 2014Applicant: L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges ClaudeInventors: Jean-Marc Bernhardt, Cindy Deschildre, Eric Fauve, David Grillot
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Publication number: 20140238070Abstract: An installation for refrigerating a same application by means of a single refrigerator/liquefier or several refrigerators/liquefiers arranged in parallel, the refrigerator(s)/liquefier(s) using a working gas of the same type having a low molar mass, each refrigerator/liquefier comprising a compression station to compress the working gas, a cold box intended for cooling the working gas at the outlet of the compression station, the compression station comprising only compression machines of the lubricated screw type and systems for removing the oil from the working fluid at the outlet of the compression machines, and the compression station comprises a plurality of compression machines defining several levels of pressure for the working fluid, the compression station comprising at least two compression machines defining at least two levels of pressure increasing above the level of pressure of the fluid at the inlet of the compression station, two main compression machines being arranged in series and defining,Type: ApplicationFiled: August 14, 2012Publication date: August 28, 2014Inventors: Jean-Marc Bernhardt, Cindy Deschildre, Eric Fauve, David Grillot
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Publication number: 20130291585Abstract: The invention relates to a method and an installation for producing liquid helium, said installation comprising a cooling/liquefaction device comprising a working circuit that subjects a helium-enriched working fluid to a thermodynamic cycle in order to produce liquid helium, said circuit comprising at least one working fluid compression body and a plurality of heat exchangers. The installation also comprises a plurality of fluid recovery lines having respective upstream ends to be selectively connected to respective reservoirs, and a first collection line having an upstream end connected to the recovery lines and a downstream end connected to a receiving body that can supply the working circuit with a working fluid.Type: ApplicationFiled: January 12, 2012Publication date: November 7, 2013Applicant: L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges ClaudeInventors: Jean-Marc Bernhardt, David Grillot, Veronique Grabie, Eric Fauve, Michel Bonneton
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Publication number: 20130269523Abstract: The present invention relates to a process for the purification by adsorption of a feed flow rich in methane and comprising at least carbon dioxide.Type: ApplicationFiled: December 21, 2011Publication date: October 17, 2013Inventors: Jean-Marc Bernhardt, Pierre Briend, David Grillot, Elise Renou, Simon Saulquin, Olivier Weitten
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Publication number: 20130000332Abstract: The invention relates to a method and device for pulsed charge refrigeration of a member from a Tokamak. The method uses a refrigeration device that subjects a working fluid such as helium to a work cycle comprising: compression, cooling, and decompression, as well as heat exchange with the member and heating. The refrigeration power produced by the refrigeration device is increased to a relatively high level when the Tokamak is in a plasma generation phase, and the refrigeration power produced by the refrigeration device is decreased to a relatively low level when the Tokamak is no longer in a plasma generation phase. Said method is characterized in that the increase in refrigeration power produced by the refrigeration device is automatically triggered in response to a signal produced during a step for starting plasma in the Tokamak.Type: ApplicationFiled: February 28, 2011Publication date: January 3, 2013Applicant: L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXInventors: Gerald Aigouy, Jean-Marc Bernhardt, Pierre Briend, Eric Fauve, David Grillot, Vincent Heloin