Turbocharger volute assembly and turbocharger

Abstract

The utility model discloses a turbocharger volute assembly and a turbocharger. The turbocharger volute assembly comprises a first bypass hole flow channel, a second bypass hole flow channel and a valve seat covering part. The first bypass hole flow channel and the second bypass hole flow channel are both arranged in the volute and separated through the partition wall. The valve seat covering part comprises a sheet-shaped body, a first through hole and a second through hole, wherein the first through hole and the second through hole are axially formed in the sheet-shaped body at intervals. The sheet-shaped body is arranged at the outlets of the first bypass hole flow channel and the second bypass hole flow channel; the first through hole is communicated with the first bypass hole flow channel; and the second through hole is communicated with the second bypass hole flow channel. A turbocharger includes a turbocharger volute assembly. According to the volute bypass valve, the orange-peel-shaped defect of thermal deformation of the surface of the volute bypass valve seat caused by high exhaust temperature can be eliminated, thermal deformation caused by high-temperature waste gas resistance of the surface of the volute bypass valve seat can be reduced, meanwhile, the abrasion resistance of the surface of the volute bypass valve seat can be enhanced, the sealing effect of the bypass valve can be improved, and the service life of the volute can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbochargers, and in particular relates to a turbocharger volute assembly and a turbocharger. Background Art

[0002] The bypass valve of the turbocharger is used to drive the turbine with the exhaust gas discharged from the engine to drive the compressor wheel at the compressor end to increase the engine intake pressure. When the engine compression is too high, the bypass valve of the turbocharger opens to release part of the exhaust gas to reduce the rotation speed of the turbine rotor and adjust the engine intake pressure. In the prior art, when the turbocharger operates under high exhaust temperature conditions for a long time, after a certain mileage, the surface of the bypass valve hole will have orange peel-like defects and severe thermal deformation. This phenomenon will cause the valve plate of the bypass valve to be poorly sealed with the bypass valve hole, which will lead to insufficient power of the engine under certain application conditions, which has been complained by users. Utility Model Content

[0003] The utility model aims to provide a turbocharger volute assembly and a turbocharger in view of the deficiencies in the prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: a turbocharger volute assembly, comprising a volute and a bypass valve device arranged on the volute, the bypass valve device comprising: a first bypass hole flow channel, a second bypass hole flow channel and a valve seat covering member; the first bypass hole flow channel and the second bypass hole flow channel are both arranged in the volute and separated by a partition wall; the valve seat covering member comprises a sheet-like body and a first through hole and a second through hole axially spaced apart on the sheet-like body; the sheet-like body is arranged at the outlet of the first bypass hole flow channel and the second bypass hole flow channel; the first through hole is connected to the first bypass hole flow channel; the second through hole is connected to the second bypass hole flow channel.

[0005] In a specific embodiment, the sheet-like body is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel through fasteners.

[0006] In a specific embodiment, the fastener is a countersunk screw or a countersunk screw.

[0007] In a specific embodiment, the sheet-like body is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel by riveting.

[0008] In a specific embodiment, a circumferential step is provided on the outer surface of the side wall of the sheet-like body, and the sheet-like body is riveted so that a plurality of first deformations at the outlets of the first bypass hole flow channel and the second bypass hole flow channel on the volute are pressed on the circumferential step of the sheet-like body.

[0009] In a specific embodiment, a plurality of first groove portions are circumferentially spaced apart on the outer surface of the side wall of the sheet-like body, and the sheet-like body is riveted so that a plurality of second deformations at the outlets of the first bypass hole flow channel and the second bypass hole flow channel on the volute are squeezed into the plurality of first groove portions of the sheet-like body.

[0010] In a specific embodiment, the first groove portion includes a plurality of first grooves, and the plurality of first grooves on one first groove portion are axially spaced apart along the outer surface of the side wall of the sheet-like body.

[0011] In a specific embodiment, a plurality of second groove portions are circumferentially spaced apart on the inner walls of the first bypass hole flow channel and the second bypass hole flow channel near the outlet, and the sheet-like body is riveted so that the plurality of deformations of the sheet-like body are squeezed into the plurality of second groove portions.

[0012] In a specific embodiment, the second groove portion includes a plurality of second grooves, and the plurality of second grooves of one second groove portion on the first bypass hole flow channel are axially spaced apart along the inner wall of the first bypass hole flow channel near the outlet, and the plurality of second grooves of one second groove portion on the second bypass hole flow channel are axially spaced apart along the inner wall of the second bypass hole flow channel near the outlet.

[0013] In a specific embodiment, the valve seat covering member includes a plurality of connecting portions, and the plurality of connecting portions are axially spaced apart on both sides of the sheet-like body, the top of the connecting portion is connected to the sheet-like body, the bottom of the connecting portion is provided with a hook-like structure, a third groove is provided on the inner wall of the first bypass hole flow channel near the outlet, and a fourth groove is provided on the inner wall of the second bypass hole flow channel near the outlet, and the sheet-like body is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel through the hook-like structure, the third groove and the fourth groove.

[0014] In a specific embodiment, the bypass valve device includes a bypass valve, and the bypass valve includes a first valve plate and a second valve plate, the first valve plate is used to close or open the first through hole, and the second valve plate is used to close or open the second through hole.

[0015] A turbocharger comprises the turbocharger volute assembly.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The turbocharger volute assembly of the utility model forms a new bypass hole valve seat by arranging valve seat covers at the outlets of the first bypass hole flow channel and the second bypass hole flow channel, which can eliminate the orange peel-like defects of thermal deformation on the surface of the volute bypass valve seat caused by high exhaust temperature, and can reduce the thermal deformation of the volute bypass valve seat surface against high-temperature exhaust gas, and at the same time can enhance the wear resistance of the volute bypass valve seat surface, thereby improving the sealing effect of the bypass valve and increasing the service life of the volute.

[0018] 2. The sheet-like body of the turbocharger volute assembly of the utility model is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel through fasteners, which is simple and efficient, and has good stability and reliability.

[0019] 3. The sheet-like body of the turbocharger volute assembly of the utility model is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel by riveting, which is fast and efficient, and has good stability and reliability.

[0020] 4. The sheet-like body of the turbocharger volute assembly of the utility model is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel through the hook structure, the third groove and the fourth groove, which is convenient and efficient, and has good stability and reliability.

[0021] 5. The turbocharger volute assembly of the utility model has a simple structure, is easy to use, has good economy and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A structural schematic diagram of a specific embodiment of a turbocharger volute assembly of the utility model is shown;

[0023] Figure 2 A structural schematic diagram showing a specific embodiment of the utility model in which the sheet-like body of the turbocharger volute assembly is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel through fasteners;

[0024] Figure 3 A cross-sectional schematic diagram of a specific embodiment of the utility model is shown in which the sheet-like body of the turbocharger volute assembly is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel through fasteners;

[0025] Figure 4 A cross-sectional schematic diagram of a specific embodiment of a turbocharger volute assembly of the utility model is shown, in which a first valve plate closes a first through hole and a second valve plate closes a second through hole;

[0026] Figure 5 A structural schematic diagram showing another specific embodiment of a turbocharger volute assembly of the utility model;

[0027] Figure 6 A structural schematic diagram showing a specific embodiment of the utility model in which the sheet-like body of the turbocharger volute assembly is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel by riveting;

[0028] Figure 7 A partial cross-sectional schematic diagram of a specific embodiment of the utility model is shown in which the sheet-like body of the turbocharger volute assembly is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel by riveting;

[0029] Figure 8 A cross-sectional schematic diagram showing another specific embodiment of the turbocharger volute assembly of the utility model in which the first valve plate closes the first through hole and the second valve plate closes the second through hole;

[0030] Fig. 9 A structural schematic diagram showing another specific embodiment of a turbocharger volute assembly of the utility model is shown;

[0031] Fig.10 A structural schematic diagram showing another specific embodiment of the utility model in which the sheet-like body of the turbocharger volute assembly is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel by riveting;

[0032] Fig.11 A partial cross-sectional schematic diagram of another specific embodiment of the utility model is shown in which the sheet-like body of the turbocharger volute assembly is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel by riveting;

[0033] Fig.12 A cross-sectional schematic diagram showing another specific embodiment of the turbocharger volute assembly of the utility model in which the first valve plate closes the first through hole and the second valve plate closes the second through hole;

[0034] Fig.13 A structural schematic diagram of another specific embodiment of a turbocharger volute assembly of the utility model is shown;

[0035] Fig.14 A structural schematic diagram showing a specific embodiment of the utility model in which the sheet-like body of the turbocharger volute assembly is connected to the outlets of the first bypass hole flow channel and the second bypass hole flow channel through a connecting portion;

[0036] Fig.15 A schematic structural diagram of a specific embodiment of a turbocharger volute assembly of the present invention is shown, in which a third groove is provided on the inner wall of the first bypass hole flow channel near the outlet, and a fourth groove is provided on the inner wall of the second bypass hole flow channel near the outlet;

[0037] Fig.16 A structural schematic diagram showing a specific embodiment of a valve seat cover of a turbocharger volute assembly of the utility model;

[0038] Fig.17 A cross-sectional schematic diagram shows another specific embodiment of the turbocharger volute assembly of the utility model, in which the first valve plate closes the first through hole and the second valve plate closes the second through hole.

[0039] Among them, 1-volute; 11-first deformation; 12-second deformation; 2-bypass valve device; 21-first bypass hole flow channel; 211-third groove; 22-second bypass hole flow channel; 221-fourth groove; 23-valve seat cover; 231-sheet body; 2311-circumferential step; 2312-first groove portion; 23121-first groove; 232-first through hole; 233-second through hole; 234-connecting portion; 2341-hook structure; 24-bypass valve; 241-first valve plate; 242-second valve plate; 3-partition wall; 4-fastener. DETAILED DESCRIPTION

[0040] The utility model will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0041] Directional terms such as "inner", "outer", "axial", "circumferential", etc. mentioned in the present invention are only used to refer to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0042] like Figures 1 to 17 As shown, the turbocharger volute assembly of the utility model comprises a volute 1 and a bypass valve device 2 arranged on the volute 1. The bypass valve device 2 comprises: a first bypass hole flow channel 21, a second bypass hole flow channel 22 and a valve seat cover 23. Among them;

[0043] The first bypass hole flow channel 21 and the second bypass hole flow channel 22 are both arranged in the volute 1 and separated by the partition wall 3 .

[0044] The valve seat cover 23 includes a sheet-like body 231 and a first through hole 232 and a second through hole 233 axially spaced apart from each other on the sheet-like body 231. The sheet-like body 231 is disposed at the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22. The first through hole 232 is communicated with the first bypass hole flow channel 21. The second through hole 233 is communicated with the second bypass hole flow channel 22.

[0045] Among them, the first bypass hole flow channel 21 is connected with the first volute inlet flow channel for allowing a part of the exhaust gas in the volute 1 to flow out of the volute 1. The second bypass hole flow channel 22 is connected with the second volute inlet flow channel for allowing another part of the exhaust gas in the volute 1 to flow out of the volute 1. By arranging the valve seat cover 23 at the outlet of the first bypass hole flow channel 21 and the second bypass hole flow channel 22 to form a new bypass hole valve seat, the first valve plate 241 and the second valve plate 242 of the bypass valve 24 can be directly in contact with the valve seat cover 23. In addition, since the valve seat cover 23 has better high temperature resistance and wear resistance than the volute 1, and has strong cold and heat shock resistance, and is not easy to produce thermal fatigue deformation, it can eliminate the orange peel-like defects of thermal deformation of the bypass valve seat surface of the volute 1 caused by high exhaust temperature, and can reduce the thermal deformation of the bypass valve seat surface of the volute 1 caused by high temperature exhaust gas, and can enhance the wear resistance of the bypass valve seat surface of the volute 1, thereby improving the sealing effect of the bypass valve 24 and the service life of the volute 1.

[0046] In a specific embodiment, Figures 1 to 4 As shown, the sheet body 231 is connected to the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22 through the fastener 4, which is simple, efficient, stable and reliable.

[0047] In a specific embodiment, Figures 1 to 3 As shown, the fastener 4 is a countersunk screw or a countersunk screw, which can improve the stability and reliability of the connection between the sheet body 231 and the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, and has a simple structure and is easy to use.

[0048] In a specific embodiment, Figures 1 to 3 As shown, there are multiple fasteners 4, which can further improve the stability and reliability of the connection between the sheet body 231 and the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, and has a simple structure and is easy to use.

[0049] In a specific embodiment, Figures 5 to 12 As shown, the sheet body 231 is connected to the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22 by riveting. The sheet body 231 is located at the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, and is quickly connected by riveting at multiple points, which is fast and efficient, and has good stability and reliability.

[0050] In a specific embodiment, Figures 6 to 8As shown, a circumferential step 2311 is provided on the outer surface of the side wall of the sheet body 231. The sheet body 231 is riveted so that multiple first deformations 11 on the volute 1 close to the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22 are pressed on the step 2311 of the sheet body 231, so that the sheet body 231 can be quickly connected with the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, which is efficient and convenient, and has good stability and reliability.

[0051] In a specific embodiment, Figures 9 to 12 As shown, a plurality of first groove portions 2312 are circumferentially spaced apart on the outer surface of the side wall of the sheet-like body 231. The sheet-like body 231 is riveted so that a plurality of second deformations 12 on the volute 1 close to the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22 are squeezed into the plurality of first groove portions 2312 of the sheet-like body 231, thereby enabling the sheet-like body 231 to be quickly connected with the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, which is efficient, convenient, stable and reliable.

[0052] In a specific embodiment, Fig.11 , Fig.12 As shown, the first groove portion 2312 includes a plurality of first grooves 23121, and the plurality of first grooves 23121 on one first groove portion 2312 are axially spaced apart along the outer surface of the side wall of the sheet-like body 231. The plurality of first grooves 23121 of the plurality of first groove portions 2312 can improve the stability and reliability of the connection between the sheet-like body 231 and the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, and the structure is simple and easy to use.

[0053] In a specific embodiment, a plurality of second groove portions are circumferentially spaced apart on the inner walls of the first bypass hole flow channel 21 and the second bypass hole flow channel 22 near the outlets. The sheet body 231 is riveted so that the plurality of deformations of the sheet body 231 are squeezed into the plurality of second groove portions, thereby enabling the sheet body 231 to be quickly connected to the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, which is efficient, convenient, stable and reliable.

[0054] In a specific embodiment, the second groove portion includes a plurality of second grooves, and the plurality of second grooves of a second groove portion on the first bypass hole flow channel 21 are axially spaced along the inner wall near the outlet of the first bypass hole flow channel 21. The plurality of second grooves of a second groove portion on the second bypass hole flow channel 22 are axially spaced along the inner wall near the outlet of the second bypass hole flow channel 22. Among them, the plurality of second grooves of the plurality of second groove portions can improve the stability and reliability of the connection between the sheet body 231 and the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, and the structure is simple and easy to use.

[0055] In a specific embodiment, Figures 13 to 17 As shown, the valve seat cover 23 includes a plurality of connecting parts 234, which are axially spaced on both sides of the sheet body 231, the top of the connecting part 234 is connected to the sheet body 231, and the bottom of the connecting part 234 is provided with a hook structure 2341. A third groove 211 is provided on the inner wall near the outlet of the first bypass hole flow channel 21. A fourth groove 221 is provided on the inner wall near the outlet of the second bypass hole flow channel 22. The sheet body 231 is connected to the outlets of the first bypass hole flow channel 21 and the second bypass hole flow channel 22 through the hook structure 2341, the third groove 211 and the fourth groove 221, which is convenient and efficient, and has good stability and reliability.

[0056] In a specific embodiment, Figure 1 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 , Fig.12 , Fig.13 , Fig.17 As shown, the bypass valve device 2 includes a bypass valve 24, and the bypass valve 24 includes a first valve disc 241 and a second valve disc 242. The first valve disc 241 is used to close or open the first through hole 232, and the second valve disc 242 is used to close or open the second through hole 233. The first valve disc 241 and the second valve disc 242 simultaneously close or open the first through hole 232 and the second through hole 233. Moreover, when the first valve disc 241 closes the first through hole 232, the first valve disc 241 and the first through hole 232 are well sealed. When the second valve disc 242 closes the second through hole 233, the second valve disc 242 and the second through hole 233 are well sealed.

[0057] When the turbocharger volute assembly of the utility model is used, a new bypass hole valve seat is formed by arranging a valve seat cover 23 at the outlet of the first bypass hole flow channel 21 and the second bypass hole flow channel 22, so that the first valve plate 241 and the second valve plate 242 of the bypass valve 24 can be in direct contact with the valve seat cover 23. And because the valve seat cover 23 has better high temperature resistance and wear resistance than the volute 1, and has strong resistance to cold and hot shock, and is not easy to produce thermal fatigue deformation, it can eliminate the orange peel-like defects of thermal deformation of the bypass valve seat surface of the volute 1 caused by high exhaust temperature, and can reduce the thermal deformation of the bypass valve seat surface of the volute 1 caused by high-temperature exhaust gas, and can enhance the wear resistance of the bypass valve seat surface of the volute 1, thereby improving the sealing effect of the bypass valve 24 and the service life of the volute 1.

[0058] On the basis of the above embodiments, the utility model further proposes a turbocharger, including the turbocharger volute assembly. The turbocharger can eliminate the orange peel-like defects of thermal deformation on the bypass valve seat surface of the volute 1 caused by high exhaust temperature, and can reduce the thermal deformation of the bypass valve seat surface of the volute 1 against high-temperature exhaust gas, and can enhance the wear resistance of the bypass valve seat surface of the volute 1, thereby improving the sealing effect of the bypass valve 24 and increasing the service life of the volute 1.

[0059] The protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the intent of the present invention also includes these modifications and variations.

Claims

1. A turbocharger volute assembly, comprising a volute (1) and a bypass valve device (2) arranged on the volute (1), characterized in that: The bypass valve device (2) comprises: a first bypass hole flow channel (21), a second bypass hole flow channel (22) and a valve seat covering member (23); The first bypass hole flow channel (21) and the second bypass hole flow channel (22) are both arranged in the volute (1) and separated by a partition wall (3); The valve seat covering member (23) comprises a sheet-like body (231) and a first through hole (232) and a second through hole (233) axially spaced apart from each other on the sheet-like body (231); the sheet-like body (231) is arranged at the outlets of the first bypass hole flow channel (21) and the second bypass hole flow channel (22); the first through hole (232) is connected to the first bypass hole flow channel (21); and the second through hole (233) is connected to the second bypass hole flow channel (22).

2. The turbocharger volute assembly according to claim 1, characterized in that: The sheet-like body (231) is connected to the outlets of the first bypass hole flow channel (21) and the second bypass hole flow channel (22) via a fastener (4).

3. The turbocharger volute assembly according to claim 2, characterized in that: The fastener (4) is a countersunk screw or a countersunk screw.

4. The turbocharger volute assembly according to claim 1, characterized in that: The sheet-like body (231) is connected to the outlets of the first bypass hole flow channel (21) and the second bypass hole flow channel (22) by riveting.

5. The turbocharger volute assembly according to claim 4, characterized in that: A circumferential step (2311) is provided on the outer surface of the side wall of the sheet-like body (231), and the sheet-like body (231) is riveted so that a plurality of first deformations (11) at the outlets of the first bypass hole flow channel (21) and the second bypass hole flow channel (22) on the volute (1) are pressed onto the circumferential step (2311) of the sheet-like body (231).

6. The turbocharger volute assembly according to claim 4, characterized in that: A plurality of first groove portions (2312) are circumferentially spaced apart on the outer surface of the side wall of the sheet-like body (231), and the sheet-like body (231) is riveted so that a plurality of second deformations (12) at the outlets of the first bypass hole flow channel (21) and the second bypass hole flow channel (22) on the volute (1) are squeezed into the plurality of first groove portions (2312) of the sheet-like body (231).

7. The turbocharger volute assembly according to claim 6, characterized in that: The first groove portion (2312) includes a plurality of first grooves (23121), and the plurality of first grooves (23121) on one first groove portion (2312) are axially spaced apart along the outer surface of the side wall of the sheet-like body (231).

8. The turbocharger volute assembly according to claim 4, characterized in that: A plurality of second groove portions are circumferentially spaced apart on the inner walls of the first bypass hole flow channel (21) and the second bypass hole flow channel (22) near the outlet, and the sheet-like body (231) is riveted so that a plurality of deformations of the sheet-like body (231) are squeezed into the plurality of second groove portions.

9. The turbocharger volute assembly according to claim 8, characterized in that: The second groove portion comprises a plurality of second grooves, wherein the plurality of second grooves of one second groove portion on the first bypass hole flow channel (21) are axially spaced apart along an inner wall of the first bypass hole flow channel (21) close to the outlet, and the plurality of second grooves of one second groove portion on the second bypass hole flow channel (22) are axially spaced apart along an inner wall of the second bypass hole flow channel (22) close to the outlet.

10. The turbocharger volute assembly according to claim 1, characterized in that: The valve seat covering member (23) comprises a plurality of connecting portions (234), wherein the plurality of connecting portions (234) are axially spaced apart on both sides of the sheet-like body (231), the top of the connecting portion (234) is connected to the sheet-like body (231), the bottom of the connecting portion (234) is provided with a hook-like structure (2341), a third groove (211) is provided on the inner wall of the first bypass hole flow channel (21) near the outlet, and a fourth groove (221) is provided on the inner wall of the second bypass hole flow channel (22) near the outlet, and the sheet-like body (231) is connected to the outlets of the first bypass hole flow channel (21) and the second bypass hole flow channel (22) via the hook-like structure (2341), the third groove (211) and the fourth groove (221).

11. The turbocharger volute assembly according to claim 1, characterized in that: The bypass valve device (2) comprises a bypass valve (24), wherein the bypass valve (24) comprises a first valve plate (241) and a second valve plate (242), wherein the first valve plate (241) is used to close or open the first through hole (232), and the second valve plate (242) is used to close or open the second through hole (233).

12. A turbocharger, characterized in that: It comprises a turbocharger volute assembly according to any one of claims 1 to 11.

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