Patent
Rotor with non-through shaft and associated rotary electric machine
| العنوان: | Rotor with non-through shaft and associated rotary electric machine |
|---|---|
| Patent Number: | 11923,735 |
| تاريخ النشر: | March 05, 2024 |
| Appl. No: | 17/413930 |
| Application Filed: | December 12, 2019 |
| مستخلص: | The rotor with a non-through shaft for a rotary electric machine comprises a cylindrical magnetic body clamped between two half-shafts, each comprising an attachment flange connected to the magnetic body, axial housings being uniformly provided in the magnetic body on at least one diameter of the magnetic body in order to house conductive bars. At least one attachment flange comprises insertion holes, each arranged facing a housing for inserting the conductive bars into the housings and the exterior diameter of the attachment flange is substantially equal to the exterior diameter of the magnetic body, the attachment flange comprising as many insertion holes as housings. |
| Inventors: | GE Energy Power Conversion Technology Limited (Warwickshire, GB) |
| Assignees: | GE Energy Power Conversion Technology Limited (Warwickshire, GB) |
| Claim: | 1. A rotor with a non-through shaft for a rotary electric machine, comprising a cylindrical magnetic mass clamped between two half-shafts each comprising an attachment flange connected to the cylindrical magnetic mass, axial housings being uniformly provided in the cylindrical magnetic mass on an implantation diameter of the cylindrical magnetic mass in order to house conductive bars, at least one attachment flange comprising insertion holes each disposed facing an axial housing of the plurality of axial housings for inserting the conductive bars into the axial housings with the exterior diameter of the attachment flange being substantially equal to the exterior diameter of the cylindrical magnetic mass, the attachment flange including as many insertion holes as the axial housings, and each insertion hole comprising an internal thread, a plug being screwed into the internal thread so as to close the free end of the attachment flange, two short-circuit discs each interposed between one of the attachment flanges of the half-shafts and one of the ends of the cylindrical magnetic mass, and conductive bars inserted into the axial housings so that the conductive bars and the short-circuit discs form a squirrel cage. |
| Claim: | 2. The rotor according to claim 1 , wherein the axial housings are cylindrical and the insertion holes are circular, the axial housings and the holes being substantially coaxial. |
| Claim: | 3. The rotor according to claim 1 , wherein the axial housings and the insertion holes have a substantially identical rectangular or rounded rectangular section. |
| Claim: | 4. The rotor according to claim 1 , wherein the insertion holes open towards the outer periphery of the rotor. |
| Claim: | 5. The rotor according to claim 1 , further comprising coils inserted into the axial housings and the insertion holes, each coil comprising several strands held in an insulating sleeve and extending in the axial direction so as to form an asynchronous or synchronous wound rotor. |
| Claim: | 6. The rotor according to claim 5 , wherein the insertion holes and the axial housings open in a radial direction to allow the insertion of the coils, a wedge being inserted into the cylindrical magnetic mass between each coil and the outer periphery of the cylindrical magnetic mass to hold the coil in its housing. |
| Claim: | 7. The rotor according to claim 1 , wherein the axial housings and the insertion holes have a substantially identical rectangular or rounded rectangular section. |
| Claim: | 8. The rotor according to claim 1 , wherein the cylindrical magnetic mass comprises compacted magnetic sheets. |
| Claim: | 9. The rotor according to claim 1 , wherein the cylindrical magnetic mass comprises a stack of metal plates. |
| Claim: | 10. The rotor according to claim 1 , wherein the cylindrical magnetic mass comprises a metal body. |
| Claim: | 11. The rotor according to claim 1 , further including screws distributed uniformly on at least one diameter of the rotor so as to keep the cylindrical magnetic mass compacted between the half-shafts, the implantation diameter of the screws being less than the implantation diameter of the axial housings. |
| Claim: | 12. The rotor according to claim 1 , further including tie rods distributed uniformly on at least one diameter of the rotor so as to keep the cylindrical magnetic mass compacted between the half-shafts, the implantation diameter of the tie rods being less than the implantation diameter of the axial housings. |
| Claim: | 13. The rotor according to claim 1 , wherein the attachment flange comprises a chamfer on its face opposite to the cylindrical magnetic mass and extending from the outer periphery of the attachment flange so as to cover the insertion holes. |
| Claim: | 14. The rotor according to claim 13 , wherein the attachment flange further comprises countersinks distributed uniformly on the implantation diameter of the insertion holes so as to reduce the length of the insertion holes. |
| Claim: | 15. The rotor according to claim 1 , wherein the attachment flange comprises a peripheral recess so as to reduce the length of the insertion holes. |
| Claim: | 16. The rotor according to claim 1 , wherein each insertion hole further comprises a groove comprising a seal so as to seal the contact between the plug and the attachment flange. |
| Claim: | 17. The rotor according to claim 1 , wherein the plug further includes a check valve for depressurising the axial housing. |
| Claim: | 18. A rotary electric machine comprising a rotor with a non-through shaft, the rotor comprising, a cylindrical magnetic mass clamped between two half-shafts each comprising an attachment flange connected to the cylindrical magnetic mass, axial housings being uniformly provided in the cylindrical magnetic mass on at least one diameter of the cylindrical magnetic mass in order to house conductive bars, at least one attachment flange comprising insertion holes each disposed facing an axial housing of the plurality of axial housings for inserting the conductive bars into the axial housings with the exterior diameter of the attachment flange being substantially equal to the exterior diameter of the cylindrical magnetic mass, the attachment flange including as many insertion holes as the axial housings, and each insertion hole comprising an internal thread, a plug being screwed into the internal thread so as to close the free end of the attachment flange, two short-circuit discs each interposed between one of the attachment flanges of the half-shafts and one of the ends of the cylindrical magnetic mass, and conductive bars inserted into the axial housings so that the conductive bars and the short-circuit discs form a squirrel cage. |
| Claim: | 19. A rotor with a non-through shaft for a rotary electric machine, comprising a cylindrical magnetic mass clamped between two half-shafts each comprising an attachment flange connected to the cylindrical magnetic mass, axial housings being uniformly provided in the cylindrical magnetic mass on at least one diameter of the cylindrical magnetic mass to house conductive bars, at least one attachment flange comprising insertion holes each disposed facing an axial housing of the plurality of axial housings for inserting the conductive bars into the axial housings with the exterior diameter of the attachment flange being substantially equal to the exterior diameter of the cylindrical magnetic mass, the attachment flange including as many insertion holes as the axial housings, and the attachment flange comprising a chamfer on its face opposite to the cylindrical magnetic mass and extending from the outer periphery of the attachment flange so as to cover the insertion holes, two short-circuit discs each interposed between one of the attachment flanges of the half-shafts and one of the ends of the cylindrical magnetic mass, and conductive bars inserted into the axial housings so that the conductive bars and the short-circuit discs form a squirrel cage. |
| Claim: | 20. The rotor according to claim 19 , wherein the attachment flange further comprises countersinks distributed uniformly on the implantation diameter of the insertion holes so as to reduce the length of the insertion holes. |
| Patent References Cited: | 2333538 August 1941 Liwschitz 2350012 May 1942 Brady 3395299 July 1968 Quay 3742595 July 1973 Lykes 3832583 August 1974 Chang 4363986 December 1982 Joho 4453101 June 1984 Nelson 5642010 June 1997 Carosa et al. 6064172 May 2000 Kuznetsov 6232692 May 2001 Kliman 6515395 February 2003 Jansen 6874221 April 2005 Jansen et al. 7451538 November 2008 Pizzichil 7504756 March 2009 Caprio et al. 7893589 February 2011 Yu et al. 8344581 January 2013 Yabe et al. 8361559 January 2013 Chan et al. 8421296 April 2013 Lateb et al. 8466597 June 2013 Yabe et al. 8631559 January 2014 Meyer et al. 9154008 October 2015 Hashish 9166462 October 2015 Yabe et al. 9263929 February 2016 Arimatsu 11218044 January 2022 Galmiche et al. 11303173 April 2022 Galmiche et al. 11316393 April 2022 Galmiche et al. 11381135 July 2022 Galmiche et al. 20020145357 October 2002 Li et al. 20030102762 June 2003 Jansen et al. 20050134137 June 2005 Sweo 20120262024 October 2012 Kleynhans et al. 20130049517 February 2013 Lang 20130154430 June 2013 Dragon et al. 20150372576 December 2015 Hembroff 20170054351 February 2017 Ishikawa 20180026505 January 2018 Galmiche 20190181736 June 2019 Frohlich 20200112216 April 2020 Galmiche et al. 509042 May 2011 2325899 May 2001 2325899 May 2001 104485773 April 2015 578782 June 1933 905044 February 1954 19956042 May 2001 102012110147 April 2014 102012110157 June 2014 0280192 August 1988 0608675 August 1994 0609645 August 1994 1009090 June 2000 2615726 July 2013 3051674 August 2016 3051675 August 2016 H06153470 May 1994 2015035870 February 2015 2015109743 June 2015 2015208102 November 2015 2013033292 March 2013 2015200033 December 2015 2017116089 July 2017 2018036760 March 2018 2020/120658 June 2020 |
| Other References: | International Search Report from International Appl. No. PCT/EP2019/084834, dated Jan. 16, 2020. cited by applicant |
| Primary Examiner: | Singh, Alexander A |
| Attorney, Agent or Firm: | WOOD IP LLC |
| رقم الانضمام: | edspgr.11923735 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |