Turbocharger with fins

Abstract

The turbocharger comprises a gas compressor shell, a turbine shell and a connecting body, a rotating shaft is rotationally connected into the connecting body, a circular groove is formed in the upper side face of the connecting body, the rotating shaft penetrates through the circular groove, a sealing sleeve is arranged on the rotating shaft located in the circular groove, and a sealing ring is arranged on the sealing sleeve. A circular groove is formed in the impeller, a sealing ring is installed in the circular groove through a first locking mechanism, the impeller further comprises a wing piece, the upper side inclined face of the wing piece is close to the bottom inclined face of the impeller to form a gap, the wing piece is fixed to the sealing ring through a second locking assembly, when the impeller rotates, a pressure cavity can be formed between the wing piece and the impeller, the oil leakage probability is reduced, and the service life of the impeller is prolonged. The sealing effect is improved; the sealing sleeve is provided with the circular truncated cone, the circular truncated cone, the base plate and the inner ring form a labyrinth structure, and the sealing ring is matched, so that the sealing effect can be further improved, and oil leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of turbochargers, in particular to a turbocharger with vanes. Background Art

[0002] A turbocharger is a device installed in a vehicle, which relies on engine exhaust gas to drive the turbine to rotate, and then drives the coaxial impeller in the compressor to rotate, and compresses air to increase the intake air volume of the engine.

[0003] The impeller and the turbine are connected by a rotating shaft, and the rotating shaft in the turbocharger is installed through a bearing, and the bearing needs to be lubricated. In order to prevent lubricating oil from overflowing, the current sealing solution for one end of the bearing is generally to set a sealing ring and then set two sealing rings abutting against the rotating shaft in the sealing ring for sealing. However, the sealing effect of this sealing solution is poor, so it needs to be improved. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a turbocharger with vanes to solve the problems mentioned in the above background art.

[0005] The utility model provides the following technical solutions: A turbocharger with vanes, including a compressor housing, a turbine housing and a connecting body. A rotating shaft extending into the compressor housing and the turbine housing respectively is rotatably connected in the connecting body through a bearing, and an impeller and a turbine are respectively installed at both ends of the rotating shaft. A circular groove penetrated by the rotating shaft is arranged in the upper side surface of the connecting body. A sealing sleeve is arranged on the rotating shaft located in the circular groove. A sealing ring is installed in the circular groove through a first locking mechanism. A first sealing ring attached to the inner curved surface of the sealing ring is installed in the sealing sleeve;

[0006] It also includes a hollow vane sleeved outside the sealing sleeve. The vane is in a funnel shape, and the upper inclined surface of the vane is close to the bottom inclined surface of the impeller to form a gap. The vane is fixed to the sealing ring through a second locking component.

[0007] Preferably, the second locking component includes a convex ring arranged on the curved surface of the circular groove. The outer edge of the lower side surface of the vane is attached to the upper side of the convex ring, and the vane is fixed to the convex ring through several first screws.

[0008] Preferably, a ring groove is arranged in the upper side surface of the sealing ring, and a snap ring inserted into the ring groove is integrally formed on the lower side surface of the vane.

[0009] Preferably, the inner curved surface of the vane is coplanar with the inner curved surface of the sealing ring.

[0010] Preferably, an inner ring is integrally formed on the lower side surface of the sealing ring. The inner curved surface of the inner ring is coplanar with the inner curved surface of the sealing ring, and a second sealing ring attached to the inner ring is further provided in the sealing sleeve.

[0011] Preferably, the first locking mechanism includes a support ring provided on the curved surface of the circular groove. An installation ring is integrally formed on the lower side surface of the sealing ring. The support ring abuts against the installation ring. A circlip is further provided in the curved surface of the circular groove, and the circlip presses on the upper side of the sealing ring;

[0012] An outer edge of the lower side surface of the installation ring is provided with a first installation groove, and a third sealing ring is installed in the first installation groove, and the third sealing ring abuts against the upper side of the support ring.

[0013] Preferably, it further includes a chassis. An inner edge of the lower side surface of the installation ring is provided with a second installation groove. The chassis is snapped into the second installation groove and fixed in the second installation groove by a second screw. A frustum is integrally formed on the outer curved surface of the sealing sleeve, and a first gap is formed by the lower side surface of the chassis close to the frustum.

[0014] Preferably, a second gap is formed by the lower side surface of the inner ring close to the upper side surface of the frustum, and the first gap and the second gap are between 0.1 - 0.25 mm.

[0015] The present utility model provides a turbocharger with fins, having the following beneficial effects:

[0016] The present utility model is provided with fins close to the impeller on the sealing ring. When the impeller rotates, a pressure chamber can be formed between the fins and the impeller, reducing the probability of oil leakage and improving the sealing effect;

[0017] A frustum is provided on the sealing sleeve in the present utility model, and a labyrinth structure is formed between the frustum and the chassis and the inner ring. Together with the sealing ring, the sealing effect can be further improved and oil leakage can be avoided. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram inside the present utility model;

[0019] Figure 2 is Figure 1 an enlarged schematic diagram of the sealing ring in

[0020] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0021] In the figure:

[0022] 11. Compressor housing; 12. Turbine housing; 13. Connecting body; 14. Rotating shaft; 15. Impeller; 16. Turbine; 17. Circular groove; 18. Sealing sleeve; 19. Sealing ring; 20. First sealing ring; 21. Vane; 22. Convex ring; 23. Snap ring; 24. Support ring; 25. Mounting ring; 26. Second sealing ring; 27. Inner ring; 28. Chassis; 29. Frustum; 30. Bearing; 31. Circlip. Detailed implementation manner

[0023] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Refer to Figures 1-3, according to an embodiment of a turbocharger with fins of the present utility model, it includes a compressor housing 11, a turbine housing 12 and a connecting body 13. A rotating shaft 14 that extends into the compressor housing 11 and the turbine housing 12 respectively is rotatably connected in the connecting body 13 through a bearing 30. Impellers 15 and turbines 16 are respectively installed at both ends of the rotating shaft 14. An oil inlet and an oil outlet are provided in the side surface of the connecting body 13. A circular groove 17 penetrated by the rotating shaft 14 is provided in the upper side surface of the connecting body 13. A sealing sleeve 18 is provided on the rotating shaft 14 located in the circular groove 17. A sealing ring 19 is installed in the circular groove 17 through a first locking mechanism. A first sealing ring 20 that adheres to the inner curved surface of the sealing ring 19 is installed in the sealing sleeve 18. In addition, a shaft sleeve 32 is further provided between the sealing sleeve 18 and the bearing 30. An air sealing cover is provided on the step of the shaft sleeve 32. Both the air sealing cover and the shaft sleeve 32 are prior arts and will not be elaborated here.

[0028] To further improve the sealing effect, it further includes fins 21 that are hollow and sleeved outside the sealing sleeve 18. The fins 21 are in a funnel shape, and the upper inclined surface of the fins 21 is close to the bottom inclined surface of the impeller 15 to form a gap. The fins 21 are fixed to the sealing ring 19 through a second locking component.

[0029] When the rotating shaft 14 and the impeller 15 rotate, a pressure chamber will be formed between the impeller 15 and the fins 21. Through experimental verification, it can effectively reduce the risk of oil leakage and improve the sealing performance.

[0030] In this embodiment, the second locking component includes a convex ring 22 provided on the curved surface of the circular groove 17. The outer edge of the lower side surface of the fins 21 adheres to the upper side of the convex ring 22, and the fins 21 are fixed to the convex ring 22 through several first screws.

[0031] In addition, to further improve the installation stability of the fins 21, a ring groove is provided in the upper side surface of the sealing ring 19. A snap ring 23 that is integrally formed on the lower side surface of the fins 21 and inserted into the ring groove is provided. Moreover, the inner curved surface of the fins 21 is coplanar with the inner curved surface of the sealing ring 19 to reduce the volume of the pressure chamber.

[0032] To increase the sealing effect at the first sealing ring 20, an inner ring 27 is integrally formed on the lower side surface of the sealing ring 19. The inner curved surface of the inner ring 27 is coplanar with the inner curved surface of the sealing ring 19. A second sealing ring that adheres to the inner ring 27 is further provided in the sealing sleeve 18. In this embodiment, both the first sealing ring 20 and the second sealing ring are ceramic sealing rings to improve the service life of the turbocharger with fins.

[0033] In this embodiment, the first locking mechanism includes a support ring 24 provided on the curved surface of the circular groove 17. An installation ring 25 is integrally formed on the lower side surface of the sealing ring 19. The support ring 24 abuts against the installation ring 25. A circlip 31 is further provided in the curved surface of the circular groove 17. The circlip 31 presses on the upper side of the sealing ring 19, that is, the sealing ring 19 is clamped between the circlip 31 and the support ring 24.

[0034] In order to prevent oil leakage from the outer curved surface of the sealing ring 19, a first installation groove is provided at the outer edge of the lower side surface of the installation ring 25. A third sealing ring 26 is installed in the first installation groove, and the third sealing ring 26 is attached to the upper side of the support ring 24.

[0035] In the second embodiment of the turbocharger with fins, in order to further improve the sealing effect, it further includes a chassis 28. A second installation groove is provided at the inner edge of the lower side surface of the installation ring 25. The chassis 28 is snapped into the second installation groove and fixed in the second installation groove by a second screw. A frustum 29 is integrally formed on the outer curved surface of the sealing sleeve 18. The lower side surface of the chassis 28 near the frustum 29 forms a first gap, and the upper side surface of the inner ring 27 near the frustum 29 forms a second gap. The first gap and the second gap are between 0.1 - 0.25 mm to form a labyrinth structure, further improving the sealing effect and preventing oil leakage.

[0036] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A turbocharger with fins, comprising a compressor housing (11), a turbine housing (12) and a connecting body (13), characterized in that: A rotating shaft (14) is rotatably connected within the connecting body (13) through a bearing (30) and extends into the compressor housing (11) and the turbine housing (12) respectively. Impellers (15) and turbines (16) are respectively installed at both ends of the rotating shaft (14). A circular groove (17) penetrated by the rotating shaft (14) is provided in the upper side surface of the connecting body (13). A sealing sleeve (18) is provided on the rotating shaft (14) located within the circular groove (17). A sealing ring (19) is installed in the circular groove (17) through a first locking mechanism. A first sealing ring (20) attached to the inner curved surface of the sealing ring (19) is installed within the sealing sleeve (18). It further includes a wing (21) that is hollow and sleeved outside the sealing sleeve (18). The wing (21) is in a funnel shape, and the upper inclined surface of the wing (21) is close to the bottom inclined surface of the impeller (15) to form a gap. The wing (21) is fixed to the sealing ring (19) through a second locking assembly.

2. The turbocharger with fins according to claim 1, wherein: The second locking assembly includes a convex ring (22) provided on the curved surface of the circular groove (17). The outer edge of the lower side surface of the wing (21) is attached to the upper side of the convex ring (22), and the wing (21) is fixed to the convex ring (22) through several first screws.

3. The turbocharger with fins according to claim 2, characterized in that: A ring groove is provided in the upper side surface of the sealing ring (19), and a snap ring (23) inserted into the ring groove is integrally formed on the lower side surface of the wing (21).

4. A turbocharger with fins according to claim 1, characterized in that: The inner curved surface of the wing (21) is coplanar with the inner curved surface of the sealing ring (19).

5. A turbocharger with fins according to claim 1, characterized in that: An inner ring (27) is integrally formed on the lower side surface of the sealing ring (19). The inner curved surface of the inner ring (27) is coplanar with the inner curved surface of the sealing ring (19), and a second sealing ring attached to the inner ring (27) is further provided within the sealing sleeve (18).

6. A turbocharger with fins according to claim 5, characterized in that: The first locking mechanism includes a support ring (24) provided on the curved surface of the circular groove (17). An installation ring (25) is integrally formed on the lower side surface of the sealing ring (19). The support ring (24) abuts against the installation ring (25). A circlip (31) is further provided in the curved surface of the circular groove (17), and the circlip (31) presses on the upper side of the sealing ring (19). A first installation groove is provided at the outer edge of the lower side surface of the installation ring (25), and a third sealing ring (26) is installed within the first installation groove. The third sealing ring (26) is attached to the upper side of the support ring (24).

7. A turbocharger with fins according to claim 6, characterized in that: It further includes a chassis (28). A second installation groove is provided at the inner edge of the lower side surface of the installation ring (25). The chassis (28) is snapped into the second installation groove and fixed within the second installation groove through second screws. A frustum (29) is integrally formed on the outer curved surface of the sealing sleeve (18). The chassis (28) is close to the lower side surface of the frustum (29) to form a first gap.

8. A turbocharger with fins according to claim 7, characterized in that: The lower side surface of the inner ring (27) is close to the upper side surface of the frustum (29) to form a second gap. The first gap and the second gap are between 0.1 - 0.25 mm.

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