Turbocharger guide device and turbocharger

Abstract

To provide a new guide device for a turbocharger, and a turbocharger with the guide device.SOLUTION: A guide device 10 for a turbocharger has a plurality of guide vanes 12 in which each guide vane 12 has a blade plate 13 and a blade leg 14, and a carrier 11 for the guide vanes 12, in which each guide vane 12 is attached to the carrier 11 through its blade leg 14. The carrier 11 has, for each guide vane 12, a groove with a bottom wall 20 and a surrounding side wall 21, or a slot-like recess 19. Each guide vane 12 is fitted into the corresponding recess 19 through its blade leg 14 such that a wall 22 of the blade leg 14 facing away from the blade plate 13 abuts on the bottom wall 20 of each recess 19. Each guide vane 12 is fixed to the carrier 11 through fixing means 24 arranged on its blade leg 14.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a guiding device for a turbocharger. The present invention further relates to a turbocharger having the guiding device.

Background Art

[0002] From Patent Document 1, a guiding device for a turbomachine configured as a compressor or a turbine is known. The guiding device has a guide vane carrier and a plurality of guide vanes. The guide vanes have blade legs and blade plates. The guide vanes are attached to the guide vane carrier at their blade legs, and each guide vane is fitted into a recess of the guide vane carrier. At this time, the guide vane legs are received in the recesses of the guide vane carrier. At this time, each guide vane completely penetrates the guide vane carrier.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] On the premise of the above, an object of the present invention is to create a new guiding device for a turbocharger and a turbocharger having the guiding device.

Means for Solving the Problems

[0005] According to the present invention, the problem is solved by the turbocharger guide device described in claim 1. According to the present invention, each guide vane carrier has a groove or slot-shaped recess having a bottom wall and surrounding side walls, and each guide vane is fitted into each recess through its blade leg such that the wall of the blade leg facing away from the blade plate abuts against the bottom wall of each recess, and each guide vane is fixed to the carrier through fixing means disposed on its blade leg.

[0006] In the guide device according to the present invention, the guide vanes are configured either individually or as individually manufactured assemblies. The guide vanes are fixed to the carrier of the guide device, specifically through the blade legs of the guide vanes fitted into grooves or slot-shaped recesses of the carrier. Fixing means disposed on the guide vane legs of the guide vanes are used to fix the guide vanes to the carrier through the guide vane legs. The guide device according to the present invention can be manufactured easily and inexpensively. When worn, the blades can be replaced individually.

[0007] Preferably, each fixing means is a plunger fitted into a recess in the blade leg of each guide vane. The engaging body of each plunger is displaceable parallel to the bottom wall of each recess of the carrier when fitting the blade leg of each guide vane into the respective groove or slot-shaped recess of the carrier, and the engaging body of each plunger engages with a notch or groove in the side wall surrounding each recess of the carrier. It is particularly preferable to fix each guide vane through a plunger. There is no risk of the plunger reaching the flow path and damaging other assemblies of the turbocharger.

[0008] The turbocharger according to the present invention is defined in claim 7.

[0009] Preferably, the guide device carrier is functionally integrated into the turbocharger assembly, particularly the turbocharger insert, bearing housing, or sealing cover. Integrating the guide device carrier with the other turbocharger assemblies eliminates the need for separate carriers. This makes it possible to reduce the number of assemblies and the weight of the turbocharger.

[0010] Preferred further developments of the present invention will become apparent from the dependent claims and the following description.

[0011] Embodiments of the present invention will be described in detail with reference to the drawings, but are not limited thereto. The following figures are shown. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view showing the first guide device of a turbocharger according to the present invention. [Figure 2] Figure 1 is a perspective view showing the guide vanes of the guidance device. [Figure 3] This is a partial cross-sectional view showing the guide device shown in Figure 1 within the region of the guide vane. [Figure 4] This is a perspective view showing a second guide device for a turbocharger according to the present invention. [Figure 5] Figure 4 is a perspective view showing the guide vanes of the guidance device. [Figure 6] This is a partial cross-sectional view showing the guide device shown in Figure 4 within the region of the guide vane. [Modes for carrying out the invention]

[0013] The present invention relates to a guide device for a turbocharger. The guide device may be a guide device for the compressor of the turbocharger, or a guide device for the turbine of the turbocharger. Typically, the compressor guide device is located downstream of the compressor impeller on the flow side. The turbocharger turbine guide device is typically located upstream of the turbine impeller when viewed in the direction of flow.

[0014] Figures 1 to 3 show different views and details of the first guide device 10 of a turbocharger according to the present invention. The guide device 10 has a carrier 11 and a plurality of guide vanes 12, two guide vanes 12 are shown as an example in Figure 1. Figure 2 shows a guide vane 12 alone.

[0015] Each guide vane 12 has a blade plate 13 and a blade leg 14. The blade plate 13 includes an inlet side edge 15 and an outlet side edge 16, as well as flow guide surfaces 17 and 18 extending between the inlet side edge 15 and the outlet side edge 16, the flow guide surfaces 17 and 18 being typically configured as the suction side and compression side of the blade plate 13.

[0016] The carrier 11 of the guide device 10 has grooves or slot-shaped recesses 19 with respect to each guide vane 12, each recess having a bottom wall 20 and surrounding side walls 21. Each guide vane 12 is fitted into each recess 19 through its blade leg 14 such that the wall 22 of the blade leg 14 of each guide vane 12 facing away from the blade plate 13 abuts against the bottom wall 20 of each recess 19 of the carrier 11. Furthermore, the peripheral edge 23 surrounding the blade leg 14 of each guide vane 12 abuts against the side wall 21 surrounding each recess 19 of the carrier 11.

[0017] When each guide vane 12 is fitted into a groove or slot-shaped recess 19 of the carrier 11 through its respective blade leg 14, each guide vane 12 is fixed to the carrier 11 through fixing means 24 provided on the blade leg 14 of the guide vane 12.

[0018] In the embodiments of FIGS. 1 to 3, each fixing means 24 is a plunger fitted into the recess 25 of the blade leg 14 of each guide vane 12. At this time, the plunger 24 is a spring plunger having an engaging element 26, and the plunger 24 is displaceable against the elastic force of the spring element 27. Specifically, it is displaceable parallel to the bottom wall 20 of each recess 19 into which each guide vane 12 is fitted.

[0019]

[0018] If each guide vane 12 is to be fitted into each recess 19 of the carrier 11 through its blade leg 14, the engaging element 26 of the plunger 24 is pushed into the blade leg 14 parallel to the bottom wall 20 against the elastic force of the spring element 27, and when the wall 22 of the blade leg 14 of each guide vane 12 is in full contact with the bottom wall 20 of the recess 19, it engages with the notch or indentation 28 of the side wall 21 surrounding each recess 19.

[0020] Through such a spring plunger, each guide vane 12 can be fitted into each recess 19 of the carrier 11 of the guiding device 10 and fixed to the carrier 11 in the form of an engagement connection or a clip connection.

[0021] FIGS. 4 to 6 show a second embodiment of the guiding device 10 of the turbocharger according to the present invention. Hereinafter, in FIGS. 4, 5 and 6, the same reference numerals are used for the same assemblies as in FIGS. 1, 2 and 3.

[0022]

[0019] In order to avoid unnecessary repetition, only the detailed parts in which the embodiments of FIGS. 4 to 6 are different from the embodiments of FIGS. 1 to 3 will be taken up. <​​In the embodiments shown in Figures 4, 5, and 6, each fixing means 24 used to secure each guide vane 12 to the carrier 11 is configured as a screw. According to Figure 6, the screw penetrates the blade leg 14 of each guide vane 12 and enters the carrier 11 through the wall 22 of the blade leg 14 facing away from the blade plate 13 and the bottom wall 20 of each recess 19. That is, in Figures 1, 2, and 3, the fixing means 24 extends parallel to the bottom wall 20 of each recess 19, whereas in Figures 4, 5, and 6, the fixing means 24 extends perpendicular to the bottom wall 20 of each recess 19.

[0024] The present invention relates not only to the guide device 10 but also to a turbocharger having the guide device 10. In this case, the guide device 10 shown in Figures 1, 2, and 3 is preferred. This is because the fixing means 24 cannot be released unintentionally and cannot reach the flow path area.

[0025] The carrier 11 is either a functionally separate assembly of the turbocharger or an assembly functionally integrated into another assembly of the turbocharger. Preferably, the carrier 11 is supplied by an insert or bearing housing or sealing cover of the turbocharger.

[0026] The guide device 10 may be a guide device for the compressor of the turbocharger, or it may be a guide device for the turbine of the turbocharger.

[0027] The guide vanes 12 are manufactured separately, for example, by casting, additive manufacturing, or by a mixed manufacturing method. Furthermore, the carrier 11 is manufactured separately. The guide vanes 12 are fitted into recesses 19 of the carrier 11 and fixed to the carrier 11 through each fixing means 24. In this case, the embodiments shown in Figures 1, 2, and 3 are preferred. [Explanation of symbols]

[0028] 10 Guide device 11 Careers 12 Guide vanes 13 blade plates 14 Blade Legs 15. Inlet side edge 16 Outlet side edge 17 Flow guidance surface 18 Flow guidance surface 19 Recess 20 Bottom wall 21 Side wall 22 Wall 23 Peripheral area 24 fixed elements 25 recesses 26 Engagement means 27 Spring elements 28 notches

Claims

1. Each of the guide vanes (12) has a blade plate (13) and a blade leg portion (14), and there are multiple guide vanes (12), A carrier (11) for the guide vanes (12), wherein each of the guide vanes (12) is attached to the carrier (11) through the blade legs (14) of the guide vanes, In a turbocharger guide device (10) having, The carrier (11) has a groove or slot-shaped recess (19) with respect to each of the guide vanes (12), which has a bottom wall (20) and surrounding side walls (21). Each of the guide vanes (12) is fitted into each of the recesses (19) such that the wall (22) of the blade leg (14) facing away from the blade plate (13) abuts against the bottom wall (20) of each of the recesses (19), through the blade leg (14) of the guide vane. Each of the guide vanes (12) is fixed to the carrier (11) through fixing means (24) provided on the blade leg portion (14) of the guide vane. The guide device (10) is characterized in that each of the fixing means (24) is a plunger fitted into a recess (25) of the blade leg portion (14) of each of the guide vanes (12).

2. The guide device according to claim 1, characterized in that each of the plunger's engaging members (26) is displaceable parallel to the bottom wall (20) of each of the recesses (19) of the carrier (11) when the blade legs (14) of each of the guide vanes (12) are fitted into the grooves or slot-shaped recesses (19) of the carrier (11).

3. The guide device according to claim 2, characterized in that the engaging body (26) of each plunger engages with a notch or groove (28) in the side wall (21) surrounding each of the recesses (19) of the carrier (11).

4. The guide device according to any one of claims 1 to 3, characterized in that the plunger is a spring plunger.

5. A turbocharger having a guide device (10) according to any one of claims 1 to 3.

6. The turbocharger according to claim 5, characterized in that the carrier (11) of the guide device (10) is a functionally separate assembly of the turbocharger.

7. The turbocharger according to claim 5, characterized in that the carrier (11) of the guide device (10) is functionally integrated into the turbocharger assembly, particularly the turbocharger insert or bearing housing or sealing cover.

8. The turbocharger according to claim 5, characterized in that the guide device (10) is a guide device for the turbine of the turbocharger or a guide device for the compressor of the turbocharger.

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