TURBOCHARGER TURBINE

• US 20120099964A1
• Filed: 12/31/2011
• Published: 04/26/2012
• Est. Priority Date: 07/03/2009
• Status: Active Grant

• Current Assignee: Kangyue Technology Co., Ltd.
• Original Assignee: Kangyue Technology Co., Ltd.
• Inventors: Wang, Hang, Li, Yanzhao, Guo, Xilu, Yang, Hengxing, Guo, Lunhai
• Granted Patent: US 8,480,360 B2
• Time in Patent Office: Days
• US Class Current: 415/144
• CPC Class Codes: F01D 17/105 by passing part of the fluid
• CPC Class Codes: F01D 17/14 varying effective cross-sectional area of nozzles or guide conduits
• CPC Class Codes: F01D 17/18 varying effective number of nozzles or guide conduits , e.g. sequentially operable valves for steam turbines
• CPC Class Codes: F01D 9/026 Scrolls for radial machines or engines
• CPC Class Codes: F02B 37/025 Multiple scrolls or multiple gas passages guiding the gas to the pump drive
• CPC Class Codes: F02B 37/24 by using pumps or turbines with adjustable guide vanes
• CPC Class Codes: F05D 2220/40 in turbochargers
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A turbocharger turbine having a double-layer flow passage and a variable cross-section, including a turbine housing, a volute diffuser channel, a power turbine, a volute gas feeding passage, and a partition wall. The volute gas feeding passage is arranged in the turbine housing. The partition wall is arranged in the volute gas feeding passage and divides the volute gas feeding passage into an external volute gas feeding passage and an internal volute gas feeding passage. The external volute gas feeding passage is located outside the internal volute gas feeding passage. The combination of the external and internal volute gas feeding passages forms different flow areas, sufficiently utilizing the waste gas energy of engines in a segmented mode. The variable cross-section turbine has a simple structure, is easy to upgrade at low cost, and can be easily mass-manufactured.

Claims

1. A turbine of a turbocharger, comprising:

a) a turbine housing (5);

b) a volute diffuser channel (7);

c) a power turbine (9);

d) a volute gas feeding passage; and

e) a partition wall (21);

wherein

the volute gas feeding passage is arranged in the turbine housing (5);

the partition wall (21) is arranged in the volute gas feeding passage and divides the volute gas feeding passage into an external volute gas feeding passage (19) and an internal volute gas feeding passage (11); and

the external volute gas feeding passage (19) is located outside the internal volute gas feeding passage (11).

2. The turbine of claim 1, wherein the partition wall (21) is integrated with a shell of the turbine housing (5) through a connector.

3. The turbine of claim 2, wherein the connector is a flow passage rib (17) arranged in the external volute gas feeding passage (19).

4. The turbine of claim 1, wherein the external volute gas feeding passage (19) is provided with a reduced outlet communicated with the volute diffuser channel (7), and a gas flow internal guiding face (16) and a gas flow external guiding face (18) are respectively arranged on two sides of the reduced outlet.

5. The turbine of claim 4, wherein the internal volute gas feeding passage (11) is a single flow passage, and a position of the reduced outlet close to the external volute gas feeding passage (19) is provided with an outlet (35) of the internal volute gas feeding passage (11) communicated with the volute diffuser passage (7).

6. The turbine of claim 5, wherein

the turbine housing (5) is provided with a by-pass hole (26) communicated with the external volute gas feeding passage (19);

an outlet of the by-pass hole (26) is equipped with a by-pass valve (27); and

the by-pass hole (26) can be opened or closed through the by-pass valve (27).

7. The turbine of claim 5, wherein a fixed pressure internal flow passage diffusing width (b1) of the outlet of the internal volute gas feeding passage (11) before the gas enters the power turbine (9) along the circumference tail edge of the internal volute gas feeding passage (11) is smaller than a fixed pressure external flow passage diffusing width (b2) of the outlet of the external volute gas feeding passage (19) before the gas enters the power turbine (9) along the circumference tail edge of the external volute gas feeding passage (19).

8. The turbine of claim 6, wherein a fixed pressure internal flow passage diffusing width (b1) of the outlet of the internal volute gas feeding passage (11) before the gas enters the power turbine (9) along the circumference tail edge of the internal volute gas feeding passage (11) is smaller than a fixed pressure external flow passage diffusing width (b2) of the outlet of the external volute gas feeding passage before the gas (19) enters the power turbine (9) along the circumference tail edge of the external volute gas feeding passage (19).

9. The turbine of claim 1, wherein a pulse internal flow passage rib (30) is arranged in the internal volute gas feeding passage (11) and divides the internal volute gas feeding passage (11) into a left pulse internal flow passage (29) and a right pulse internal flow passage (31).

10. The turbine of claim 9, wherein the pulse internal flow passage rib (30) is longitudinally arranged in the internal volute gas feeding passage (11) in a suspended mode, the top of the pulse internal flow passage rib (30) is integrated with the partition wall (21), and the lower portion thereof is close to the volute diffuser passage (7).

11. The turbine of claim 10, wherein a pulse internal flow passage diffusing width (c1) of the outlet of the internal volute gas feeding passage (11) before the gas enters the power turbine (9) along the circumference tail edge of the left pulse internal flow passage (29) and the right pulse internal flow passage (31) is smaller than a pulse internal flow passage diffusing width (c2) of the outlet of the external volute gas feeding passage (19) before the gas enters the power turbine (9) along the circumference tail edge of the external volute gas feeding passage (19).