Patents by Inventor Hans Wallin
Hans Wallin 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: 11946416Abstract: A front centre body (FCB) structure for a geared turbofan engine comprises a plurality of vanes extending across the inlet duct to a low pressure compressor and integrates a heat exchanging arrangement to control the temperature of the gearbox of the turbofan engine.Type: GrantFiled: November 19, 2020Date of Patent: April 2, 2024Assignee: GKN Aerospace Sweden ABInventors: Lars Ellbrant, Hans MÃ¥rtensson, Carlos Arroyo, Fredrik Wallin, Mattias Billson
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Publication number: 20230304505Abstract: A bearing assembly includes a first bearing unit and a second bearing unit for supporting a shaft, in particular a rotor shaft within a centrifugal compressor in which an axial load acts on the shaft in a first or a second axial direction, the second axial direction being opposite to the first axial direction. When the axial load acts in the first axial direction, the first bearing unit is configured to support both an axial load and a radial load and the second bearing unit is configured to support a radial load. Alternatively, when the axial load acts in the second axial direction, the first bearing unit is configured to support a radial load and the second bearing unit is configured to support both an axial load and a radial load.Type: ApplicationFiled: March 17, 2023Publication date: September 28, 2023Inventors: Gregory HOFMANN, Hans WALLIN, Benkui XIA, Jingwen ZHANG
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Patent number: 11493242Abstract: A cooling system and methods of employing the same includes a refrigerant cycle for cycling refrigerant from a compressor to a condenser and from the condenser an evaporator unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly.Type: GrantFiled: November 15, 2019Date of Patent: November 8, 2022Assignee: AKTIEBOLAGET SKFInventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Patent number: 11493243Abstract: Disclosed is a cooling system comprising a refrigerant cycle for cycling refrigerant from at least a compressor unit for com-pressing gaseous refrigerant to a condenser unit for condensing gaseous refrigerant to liquid refrigerant, from the condenser unit to an evaporator unit for evaporating the liquid refrigerant to gaseous refrigerant, and from the evaporating unit back to the compressor unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly, wherein the at least one lubricating refrigerant supply line branches off from the refrigerant cycle at the condenser unit for providing refrigerant to the bearing assembly, and re-unites with the refrigerant cycle at the evaporator unit, for feeding back refrigerant from the bearing assembly to the refrigerant cycle.Type: GrantFiled: November 26, 2019Date of Patent: November 8, 2022Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Patent number: 11473623Abstract: A bearing assembly includes at least two bearings each having an inner ring and outer ring, the inner rings being mounted on a shaft, and a balancing piston being disposed between the two bearings. The balancing piston includes a first part and a second part, the first and second parts each contacting the outer rings of the two bearings in an axial direction. The balancing piston further includes an inlet for directing a pressure fluid between the first and second parts to provide pressure to the first and second parts such that the balancing piston adjusts or exerts axial force on at least one of the two bearings. The balancing piston includes an outlet for directing the pressure fluid to lubricate at least one of the two bearings. Also, the outer diameter of the balancing piston is greater than the outer diameter of the outer rings of the two bearings.Type: GrantFiled: November 6, 2020Date of Patent: October 18, 2022Assignee: AKTIEBOLAGET SKFInventors: Xia Benkui, Hans Wallin
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Patent number: 11143236Abstract: A pair of hybrid ball bearings have stainless steel rings and ceramic balls and are configured such that when the first inner ring and the first outer ring are in contact with the first plurality of ceramic balls under zero measuring load and zero mounting load and the second inner ring and the second outer ring are in contact with the second plurality of ceramic balls under zero measuring load and zero mounting load a certain gap exists between either the inner rings or the outer rings. The gap is based on the diameter of the inner ring or on the pitch diameter of the balls and on whether the bearings have an X configuration or an O configuration.Type: GrantFiled: May 6, 2020Date of Patent: October 12, 2021Assignee: AKTIEBOLAGET SKFInventors: Hans Wallin, Rudolf Hauleitner
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Patent number: 11067129Abstract: A rolling bearing having an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The rolling bearing is media-lubricated or oil-free lubricated. The lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways. At first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, preferably an oil-based preservative fluid. Also, a refrigerant compressor having such a rolling bearing.Type: GrantFiled: September 18, 2019Date of Patent: July 20, 2021Assignee: Aktiebolaget SKFInventors: Hans Wallin, Rudolf Hauleitner, Guillermo Enrique Morales Espejel
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Publication number: 20210156429Abstract: A bearing assembly includes at least two bearings each having an inner ring and outer ring, the inner rings being mounted on a shaft, and a balancing piston being disposed between the two bearings. The balancing piston includes a first part and a second part, the first and second parts each contacting the outer rings of the two bearings in an axial direction. The balancing piston further includes an inlet for directing a pressure fluid between the first and second parts to provide pressure to the first and second parts such that the balancing piston adjusts or exerts axial force on at least one of the two bearings. The balancing piston includes an outlet for directing the pressure fluid to lubricate at least one of the two bearings. Also, the outer diameter of the balancing piston is greater than the outer diameter of the outer rings of the two bearings.Type: ApplicationFiled: November 6, 2020Publication date: May 27, 2021Inventors: Xia Benkui, Hans Wallin
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Patent number: 11009035Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are configured with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.Type: GrantFiled: April 25, 2018Date of Patent: May 18, 2021Assignee: Aktiebolaget SKFInventors: Hans Wallin, Rudolf Hauleitner
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Publication number: 20210079953Abstract: A rolling bearing having an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The rolling bearing is media-lubricated or oil-free lubricated. The lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways. At first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, preferably an oil-based preservative fluid. Also, a refrigerant compressor having such a rolling bearing.Type: ApplicationFiled: September 18, 2019Publication date: March 18, 2021Inventors: Hans Wallin, Rudolf Hauleitner, Guillermo Enrique Morales Espejel
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Publication number: 20200263733Abstract: A pair of hybrid ball bearings have stainless steel rings and ceramic balls and are configured such that when the first inner ring and the first outer ring are in contact with the first plurality of ceramic balls under zero measuring load and zero mounting load and the second inner ring and the second outer ring are in contact with the second plurality of ceramic balls under zero measuring load and zero mounting load a certain gap exists between either the inner rings or the outer rings. The gap is based on the diameter of the inner ring or on the pitch diameter of the balls and on whether the bearings have an X configuration or an O configuration.Type: ApplicationFiled: May 6, 2020Publication date: August 20, 2020Inventors: Hans Wallin, Rudolf Hauleitner
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Publication number: 20200166251Abstract: A cooling system and methods of employing the same includes a refrigerant cycle for cycling refrigerant from a compressor to a condenser and from the condenser an evaporator, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly. The lubricating refrigerant supply line including one or more filters, such as particle filters, acid filters, or desiccant filters.Type: ApplicationFiled: November 21, 2019Publication date: May 28, 2020Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Publication number: 20200166249Abstract: A cooling system and methods of employing the same includes a refrigerant cycle for cycling refrigerant from a compressor to a condenser and from the condenser an evaporator unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly.Type: ApplicationFiled: November 15, 2019Publication date: May 28, 2020Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Publication number: 20200166252Abstract: Disclosed is a cooling system comprising a refrigerant cycle for cycling refrigerant from at least a compressor unit for com-pressing gaseous refrigerant to a condenser unit for condensing gaseous refrigerant to liquid refrigerant, from the condenser unit to an evaporator unit for evaporating the liquid refrigerant to gaseous refrigerant, and from the evaporating unit back to the compressor unit, and a lubrication cycle having at least one lubricating refrigerant supply line for providing refrigerant as lubricant to a bearing assembly, wherein the at least one lubricating refrigerant supply line branches off from the refrigerant cycle at the condenser unit for providing refrigerant to the bearing assembly, and re-unites with the refrigerant cycle at the evaporator unit, for feeding back refrigerant from the bearing assembly to the refrigerant cycle.Type: ApplicationFiled: November 26, 2019Publication date: May 28, 2020Inventors: Rudolf Hauleitner, Christine Matta, Guillermo Enrique Morales Espejel, Hans Wallin
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Patent number: 10544828Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are designed with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.Type: GrantFiled: December 20, 2017Date of Patent: January 28, 2020Assignee: AKTIEBOLAGET SKFInventors: Rudolf Hauleitner, Hans Wallin
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Publication number: 20190331124Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are configured with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.Type: ApplicationFiled: April 25, 2018Publication date: October 31, 2019Inventors: Hans Wallin, Rudolf Hauleitner
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Publication number: 20190331167Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are configured with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.Type: ApplicationFiled: April 25, 2018Publication date: October 31, 2019Inventors: Hans Wallin, Rudolf Hauleitner
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Patent number: 10337773Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 15% by weight and 50% by weight.Type: GrantFiled: November 9, 2016Date of Patent: July 2, 2019Assignee: Aktiebolaget SKFInventors: Rudolf Hauleitner, Mario Kammerhuber, Guillermo Morales Espejel, Hans Wallin
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Publication number: 20190186536Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are designed with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Inventors: Rudolf Hauleitner, Hans Wallin
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Patent number: 10309697Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 15% by weight and 60% by weight.Type: GrantFiled: November 9, 2016Date of Patent: June 4, 2019Assignee: Aktiebolaget SKFInventors: Rudolf Hauleitner, Mario Kammerhuber, Guillermo Morales Espejel, Hans Wallin