[특허]Turbocharger

Bosch Mahle Turbo Systems GmbH & Co. KG

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Turbocharger

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-017/16 F02B-037/22
출원번호	US-0863607 (2009-01-09)
등록번호	US-9163557 (2015-10-20)
우선권정보	DE-10 2008 005 404 (2008-01-21)
국제출원번호	PCT/EP2009/050211 (2009-01-09)
§371/§102 date	20101005 (20101005)
국제공개번호	WO2009/092636 (2009-07-30)
발명자 / 주소	Blümmel, Dirk Fleig, Claus Stein, Matthias Wengert, Andreas
출원인 / 주소	Bosch Mahle Turbo Systems GmbH & Co. KG
대리인 / 주소	Fishman Stewart Yamaguchi PLLC
인용정보	피인용 횟수 : 0 인용 특허 : 16

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A turbocharger, comprising: at least one of a turbine housing, a bearing housing and a turbine wheel, wherein the turbine wheel is rotatably mounted about an axis and includes a guide apparatus with a plurality of guide vanes rotatably mounted in pivot bearings on a guide vane support, wherein the guide vanes influence the flow in a flow channel of the turbine housing; and a spring element, which moveably loads the guide apparatus in an axial direction against a wall of the turbine housing, and wherein the disc springs seal a displacement chamber provide...

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1. A turbocharger, comprising: at least one of a turbine housing, a bearing housing and a turbine wheel, wherein the turbine wheel is rotatably mounted about an axis and includes a guide apparatus with a plurality of guide vanes rotatably mounted in pivot bearings on a guide vane support, wherein the guide vanes influence the flow in a flow channel of the turbine housing; and a spring element, which moveably loads the guide apparatus in an axial direction against a wall of the turbine housing, wherein two disc springs are between the guide apparatus and the bearing housing and are arranged such that a proximate end of each disc spring is in direct contact with the guide apparatus and a distal end of each disc spring is in direct contact with the bearing housing, wherein a first disc spring is arranged in a radial direction between the rotational axis of the turbine wheel and the pivot bearings of the guide vanes and a second disc spring is arranged in a radial direction on the side of the pivot bearings facing away from the rotational axis of the turbine wheel, wherein each disc spring includes a single member extending linearly between the proximate end and the distal end, and is oriented at an angle with respect to the rotational axis of the turbine such that the proximate end of each disc spring is axially closer to the guide vanes than the distal end of each disc spring such that the guide apparatus is pressed against the wall of the turbine housing, and wherein the disc springs seal a displacement chamber provided with a displacement mechanism of the guide apparatus against the flow channel. 2. The turbocharger according to claim 1, wherein at least one of the disc springs forms a heat shield. 3. The turbocharger according to claim 1, wherein the first disc spring and the second disc spring each form a heat shield. 4. The turbocharger according to claim 1, wherein at least one of the disc springs consists of a temperature-resistant spring material, wherein the spring resists high temperatures that occur in the flow channel of the turbine housing, and wherein the disc springs exert a spring force sufficient to axially secure and load the guide apparatus with a predetermined clamping force. 5. The turbocharger according to claim 1, wherein the first disc spring and the second disc spring each support themselves on the bearing housing with at least one end facing away from the pivot bearings of the guide vanes. 6. The turbocharger according to claim 1, wherein the first disc spring and the second disc spring each support themselves on the guide vane support with at least one end facing the pivot bearings of the guide vanes. 7. The turbocharger according to claim 2, wherein at least one of the disc springs consists of a temperature-resistant spring material, wherein the spring resists high temperatures that occur in the flow channel of the turbine housing, and wherein the disc springs exert a spring force sufficient to axially secure and load the guide apparatus with a predetermined clamping force. 8. The turbocharger according to claim 2, wherein the first disc spring and the second disc spring each support themselves on the bearing housing with at least one end facing away from the pivot bearings of the guide vanes. 9. The turbocharger according to claim 4, wherein the first disc spring and the second disc spring each support themselves on the bearing housing with at least one end facing away from the pivot bearings of the guide vanes. 10. The turbocharger according to claim 2, wherein the first disc spring and the second disc spring each support themselves on the guide vane support with at least one end facing the pivot bearings of the guide vanes. 11. The turbocharger according to claim 4, wherein the first disc spring and the second disc spring each support themselves on the guide vane support with at least one end facing the pivot bearings of the guide vanes. 12. A turbocharger, comprising: a turbine housing;a bearing housing;a turbine wheel rotatably mounted about an axis, wherein the turbine wheel includes a guide apparatus having a plurality of guide vanes that are rotatably mounted in at least one pivot bearing on a guide vane support, and wherein the guide vanes influence the flow in the turbine housing; anda spring element, which moveably loads the guide apparatus in an axial direction against a wall of the turbine housing, wherein two disc springs are between the guide apparatus and the bearing housing and are arranged such that a proximate end of each disc spring is in direct contact with the guide apparatus and a distal end of each disc spring is in direct contact with the bearing housing, wherein a first disc spring is arranged in a radial direction between the rotational axis of the turbine wheel and the pivot bearings of the guide vanes and a second disc spring is arranged in a radial direction on the side of the pivot bearings facing away from the rotational axis of the turbine wheel, wherein each disc spring is oriented at an angle with respect to the rotational axis of the turbine with the proximate end of each disc spring being axially closer to the guide vanes and radially closer to the pivot bearings than the distal end of each disc spring such that the guide apparatus is pressed against the wall of the turbine housing, and wherein the disc springs seal a displacement chamber provided with a displacement mechanism of the guide apparatus against the flow channel;wherein the first disc spring and the second disc spring each supports itself on the bearing housing with the distal end facing away in a radial direction from the at least one pivot bearing of the guide vanes, and supports itself on the guide vane support with the proximate end facing the at least one pivot bearing of the guide vanes in the vicinity of the at least one pivot bearing. 13. The turbocharger according to claim 12, wherein at least one of the disc springs forms a heat shield. 14. The turbocharger according to claim 12, wherein at least one of the disc springs consists of a temperature-resistant spring material, wherein the spring resists high temperatures that occur in the flow channel of the turbine housing, and wherein the disc springs exert a spring force sufficient to axially secure and load the guide apparatus with a predetermined clamping force. 15. The turbocharger according to claim 12, wherein the first disc spring and the second disc spring each support themselves on the guide vane support with at least one end facing the pivot bearings of the guide vanes. 16. The turbocharger according to claim 1, wherein the guide apparatus further comprises a cover disc spaced apart from the guide vane support via at least one spacer, the plurality of guide vanes being positioned between the guide vane support and the cover disc, and the guide vanes are spaced from the guide vane support and the cover disc. 17. A turbocharger comprising: a turbine housing;a bearing housing;a turbine wheel rotatably mounted about an axis, the turbine wheel including a guide apparatus having a plurality of guide vanes that are rotatably mounted in at least one pivot bearing on a guide vane support, the guide vanes being configured to influence flow in the turbine housing, and a cover disc spaced apart from the guide vane support such that the plurality of guide vanes are positioned between the guide vane support and the cover disc, and the guide vanes are spaced from the guide vane support and the cover disc;a first disc spring arranged in a radial direction between the rotational axis of the turbine wheel and the at least one pivot bearing of the guide vanes, the first disc spring supporting itself on the guide apparatus and the bearing housing; anda second disc spring arranged in a radial direction on the side of the at least one pivot bearing facing away from the rotational axis of the turbine wheel, the second disc spring supporting itself on the guide apparatus and the bearing housing;wherein the first disc spring and the second disc spring each includes a single member extending linearly between the proximate end and the distal end, and are each oriented at an angle with respect to the rotational axis with a proximate end of each disc spring being axially closer to the guide vanes than a distal end of each disc spring such that the disc springs moveably load the guide apparatus in an axial direction against a wall of the turbine housing;wherein the first disc spring and the second disc spring each is in direct contact with the guide apparatus and the bearing housing and each supports itself on the bearing housing with the distal end facing away in a radial direction from the at least one pivot bearing of the guide vanes, and supports itself on the guide vane support with the proximate end facing the at least one pivot bearing of the guide vanes in the vicinity of the at least one pivot bearing. 18. The turbocharger according to claim 17, wherein at least one of the disc springs consists of a temperature-resistant spring material, wherein the spring resists high temperatures that occur in the flow channel of the turbine housing, and wherein the disc springs exert a spring force sufficient to axially secure and load the guide apparatus with a predetermined clamping force. 19. The turbocharger according to claim 1, wherein the proximate ends of the first disc spring and the second disc spring are radially closer to the pivot bearings than the distal ends of the first disc spring and the second disc spring. 20. The turbocharger according to claim 1, wherein the distal ends of the first disc spring and the second disc spring are pressed against respective corner edges formed in the bearing housing.

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