Patents by Inventor Sung Hwa JEUNG
Sung Hwa JEUNG 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: 11892031Abstract: A compressor includes a housing, a shaft that is rotated relative to the housing to compress a working fluid, and a foil bearing that supports the shaft. The foil bearing includes a top foil. The foil bearing is a foil gas bearing that is backed up by a ball bearing, or a mesh foil bearing with an actuator to compress a wire mesh dampener. A heat transfer circuit includes a compressor and a working fluid. The compressor includes a shaft that is rotated to compress the working fluid, and a foil bearing for supporting the shaft as it rotates.Type: GrantFiled: January 30, 2023Date of Patent: February 6, 2024Assignee: TRANE INTERNATIONAL INC.Inventors: Sung Hwa Jeung, Charles Roesler, Donald Lee Hill, Jay H. Johnson, Joseph M. Heger
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Patent number: 11867230Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a damping system including a biasing member, the biasing member being disposed in a passageway that extends along the longitudinal direction of the aperture and circumferentially about the aperture, wherein the biasing member is arranged radially outward from the porous surface layer.Type: GrantFiled: October 17, 2022Date of Patent: January 9, 2024Assignee: TRANE INTERNATIONAL INC.Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Publication number: 20230349421Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a damping system including a biasing member, the biasing member being disposed in a passageway that extends along the longitudinal direction of the aperture and circumferentially about the aperture, wherein the biasing member is arranged radially outward from the porous surface layer.Type: ApplicationFiled: October 17, 2022Publication date: November 2, 2023Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Publication number: 20230184286Abstract: A compressor includes a housing, a shaft that is rotated relative to the housing to compress a working fluid, and a foil bearing that supports the shaft. The foil bearing includes a top foil. The foil bearing is a foil gas bearing that is backed up by a ball bearing, or a mesh foil bearing with an actuator to compress a wire mesh dampener. A heat transfer circuit includes a compressor and a working fluid. The compressor includes a shaft that is rotated to compress the working fluid, and a foil bearing for supporting the shaft as it rotates.Type: ApplicationFiled: January 30, 2023Publication date: June 15, 2023Inventors: Sung Hwa Jeung, Charles Roesler, Donald Lee Hill, Jay H. Johnson, Joseph M. Heger
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Publication number: 20230106287Abstract: A heat transfer circuit that includes a compressor with a gas bearing, a condenser, an expander, an evaporator, a lubricant stream, and a heat source. The lubricant stream receives a portion of the working fluid and supplies the portion of the working fluid to the gas bearing of the compressor. A method of supplying lubricant to a gas bearing of a compressor in a heat transfer circuit includes compressing and further heating at least a portion of the working fluid heated in the evaporator, and supplying the compressed and further heated working fluid to the gas bearing of the compressor. A method of the supplying lubricant to a gas bearing of a compressor in a heat circuit includes generating compressed gaseous working fluid within a lubricant stream.Type: ApplicationFiled: December 12, 2022Publication date: April 6, 2023Inventors: Sung Hwa Jeung, Jay H. Johnson, Charles Roesler, Joseph M. Heger
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Publication number: 20230037942Abstract: A scroll compressor includes a first scroll member, a second scroll member, and an aerostatic thrust bearing. The aerostatic thrust bearing forms a layer of gas between the second scroll member and a fixed supporting member to support the second scroll member as the second scroll member rotates and/or orbits. Also disclosed is a method of supporting a rotating/orbiting scroll member in a scroll compressor. The method including supplying pressurized gas to an aerostatic thrust bearing such that a layer of gas is formed between the rotating/orbiting scroll member and a fixed supporting member.Type: ApplicationFiled: August 15, 2022Publication date: February 9, 2023Inventors: Jay H. JOHNSON, Michael G. BENCO, Sung Hwa JEUNG, Scott J. SMERUD, James Joseph WILTZIUS
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Patent number: 11566663Abstract: A compressor includes a housing, a shaft that is rotated relative to the housing to compress a working fluid, and a foil bearing that supports the shaft. The foil bearing includes a top foil. The foil bearing is a foil gas bearing that is backed up by a ball bearing, or a mesh foil bearing with an actuator to compress a wire mesh dampener. A heat transfer circuit includes a compressor and a working fluid. The compressor includes a shaft that is rotated to compress the working fluid, and a foil bearing for supporting the shaft as it rotates.Type: GrantFiled: June 26, 2019Date of Patent: January 31, 2023Assignee: TRANE INTERNATIONAL INC.Inventors: Sung Hwa Jeung, Charles Roesler, Donald Lee Hill, Jay H. Johnson, Joseph M. Heger
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Patent number: 11473621Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a damping system including a biasing member, the biasing member being disposed in a passageway that extends along the longitudinal direction of the aperture and circumferentially about the aperture, wherein the biasing member is arranged radially outward from the porous surface layer.Type: GrantFiled: September 14, 2020Date of Patent: October 18, 2022Assignee: TRANE INTERNATIONAL INC.Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Patent number: 11415135Abstract: A scroll compressor includes a first scroll member, a second scroll member, and an aerostatic thrust bearing. The aerostatic thrust bearing forms a layer of gas between the second scroll member and a fixed supporting member to support the second scroll member as the second scroll member rotates and/or orbits. Also disclosed is a method of supporting a rotating/orbiting scroll member in a scroll compressor. The method including supplying pressurized gas to an aerostatic thrust bearing such that a layer of gas is formed between the rotating/orbiting scroll member and a fixed supporting member.Type: GrantFiled: June 15, 2018Date of Patent: August 16, 2022Assignee: TRANE INTERNATIONAL INC.Inventors: Jay H. Johnson, Michael G. Benco, Sung Hwa Jeung, Scott J. Smerud, James Joseph Wiltzius
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Publication number: 20210095682Abstract: A heat transfer circuit includes a compressor, a condenser, an expander, and an evaporator. The compressor includes a shaft that is rotated to compress a working fluid and a gas bearing to support the shaft. A conduit is configured to supply a portion of the working fluid to the compressor to cool the gas bearing. A method of controlling a heat transfer circuit includes directing a working fluid through a main flow path of the heat transfer circuit that directs the working fluid through a compressor, a condenser, an expander, an evaporator, and back to the compressor. The method also includes suppling supplying a portion of the working fluid in the main flow path to the compressor to cool a gas bearing of the compressor.Type: ApplicationFiled: September 30, 2020Publication date: April 1, 2021Inventors: Sung Hwa JEUNG, Joseph M. HEGER, Charles E. ROESLER, JR., Jay H. JOHNSON, Robert S. BAKKESTUEN
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Publication number: 20200408256Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a damping system including a biasing member, the biasing member being disposed in a passageway that extends along the longitudinal direction of the aperture and circumferentially about the aperture, wherein the biasing member is arranged radially outward from the porous surface layer.Type: ApplicationFiled: September 14, 2020Publication date: December 31, 2020Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Publication number: 20200408245Abstract: A compressor includes a housing, a shaft that is rotated relative to the housing to compress a working fluid, and a foil bearing that supports the shaft. The foil bearing includes a top foil. The foil bearing is a foil gas bearing that is backed up by a ball bearing, or a mesh foil bearing with an actuator to compress a wire mesh dampener. A heat transfer circuit includes a compressor and a working fluid. The compressor includes a shaft that is rotated to compress the working fluid, and a foil bearing for supporting the shaft as it rotates.Type: ApplicationFiled: June 26, 2019Publication date: December 31, 2020Inventors: Sung Hwa Jeung, Charles Roesler, Donald Lee Hill, Jay H. Johnson, Joseph M. Heger
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Publication number: 20200378657Abstract: A heat transfer circuit that includes a compressor with a gas bearing, a condenser, an expander, an evaporator, a lubricant stream, and a heat source. The lubricant stream receives a portion of the working fluid and supplies the portion of the working fluid to the gas bearing of the compressor. A method of supplying lubricant to a gas bearing of a compressor in a heat transfer circuit includes compressing and further heating at least a portion of the working fluid heated in the evaporator, and supplying the compressed and further heated working fluid to the gas bearing of the compressor. A method of the supplying lubricant to a gas bearing of a compressor in a heat circuit includes generating compressed gaseous working fluid within a lubricant stream.Type: ApplicationFiled: May 31, 2019Publication date: December 3, 2020Inventors: Sung Hwa Jeung, Jay H. Johnson, Charles Roesler, Joseph M. Heger
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Patent number: 10774873Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a damping system including a biasing member, the biasing member being disposed in a passageway that extends along the longitudinal direction of the aperture and circumferentially about the aperture, wherein the biasing member is arranged radially outward from the porous surface layer.Type: GrantFiled: June 11, 2018Date of Patent: September 15, 2020Assignee: TRANE INTERNATIONAL INC.Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Patent number: 10753392Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer includes a plurality of segments arranged in a longitudinal direction of the aperture. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a plurality of dampers. The plurality of dampers is disposed circumferentially about the aperture. The plurality of dampers is arranged in between a first segment of the plurality of segments of the porous surface layer and a second segment of the plurality of segments of the porous surface layer.Type: GrantFiled: June 11, 2018Date of Patent: August 25, 2020Assignee: TRANE INTERNATIONAL INC.Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Publication number: 20190376555Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer includes a plurality of segments arranged in a longitudinal direction of the aperture. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a plurality of dampers. The plurality of dampers is disposed circumferentially about the aperture. The plurality of dampers is arranged in between a first segment of the plurality of segments of the porous surface layer and a second segment of the plurality of segments of the porous surface layer.Type: ApplicationFiled: June 11, 2018Publication date: December 12, 2019Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Publication number: 20190376556Abstract: A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a damping system including a biasing member, the biasing member being disposed in a passageway that extends along the longitudinal direction of the aperture and circumferentially about the aperture, wherein the biasing member is arranged radially outward from the porous surface layer.Type: ApplicationFiled: June 11, 2018Publication date: December 12, 2019Inventors: Sung Hwa Jeung, Jay H. Johnson, Donald Lee Hill, Matthew Cambio
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Publication number: 20180363658Abstract: A scroll compressor includes a first scroll member, a second scroll member, and an aerostatic thrust bearing. The aerostatic thrust bearing forms a layer of gas between the second scroll member and a fixed supporting member to support the second scroll member as the second scroll member rotates and/or orbits. Also disclosed is a method of supporting a rotating/orbiting scroll member in a scroll compressor. The method including supplying pressurized gas to an aerostatic thrust bearing such that a layer of gas is formed between the rotating/orbiting scroll member and a fixed supporting member.Type: ApplicationFiled: June 15, 2018Publication date: December 20, 2018Inventors: Jay H. JOHNSON, Michael G. BENCO, Sung Hwa JEUNG, Scott J. SMERUD, James Joseph WILTZIUS