Turbocharger with light-weight water-cooled turbine shell

Abstract

A light-weight turbocharger with a water-cooled turbine shell comprises a turbine assembly, a gas compressor assembly, a bearing body assembly and a shaft system assembly, the turbine assembly comprises the water-cooled turbine shell, a gas inlet and a gas outlet are formed in the water-cooled turbine shell, and a circle of water cavity surrounds the outer portion of a gas cavity, from the gas inlet to the gas outlet, of the water-cooled turbine shell to be used for cooling. The water cavity comprises a water inlet and a water outlet, the water inlet is aligned with the airway throat, and no barb structure exists on the water cavity. In the structure, the water inlet is aligned with the throat of the air channel, no barb structure exists on the inner wall of the water cavity, and the water cooling efficiency can be remarkably improved through the structural improvement.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbochargers, and in particular relates to a lightweight water-cooled turbine shell turbocharger. Background Art

[0002] The turbocharger is an important component of the current automobile engine system. It can allow more air to enter the cylinder and mix it with the fuel more fully for combustion, which can significantly increase the engine's power and torque, and also help improve fuel economy and reduce emissions.

[0003] At present, due to the high exhaust temperature, the turbine shell of the gasoline engine supercharger is mainly made of high-temperature resistant cast steel or cast iron, which is costly and heavy. In addition, the surface temperature of the turbine shell is high and the heat radiation is large, so it needs to be insulated and protected, and the structure is complex and bulky.

[0004] Based on the above defects still existing in the prior art, the present application further designs and improves the water-cooled turbine shell turbocharger. Utility Model Content

[0005] In view of the deficiencies in the above prior art, the utility model provides a lightweight water-cooled turbine shell turbocharger, wherein the water-cooled turbine shell is made of cast aluminum alloy material, and water cooling is adopted inside the turbine shell so that its surface temperature does not exceed 250°C, the heat radiation is small, the supercharger heat radiation protection cover can be omitted and the fastener grade can be reduced, the weight of the supercharger is reduced and the cost is reduced. The engine can also significantly reduce the cost by omitting the protection cover and reducing the material grade of the post-processing parts.

[0006] The utility model solves the problem through the following technical solutions.

[0007] A lightweight water-cooled turbine shell turbocharger comprises a turbine assembly, a compressor assembly, a bearing body assembly, and a shaft assembly. The turbine assembly comprises a water-cooled turbine shell, the water-cooled turbine shell is provided with an air inlet and an air outlet, and a water cavity is surrounded by the outside of the air cavity from the air inlet to the air outlet on the water-cooled turbine shell for cooling, the water cavity comprises a water inlet and a water outlet, and the water inlet is aligned with the airway throat, and there is no undercut structure on the water cavity.

[0008] In this structure, the water inlet is aligned with the airway throat, and there is no undercut structure on the inner wall of the water cavity. These structural improvements can significantly improve the water cooling efficiency.

[0009] In a preferred embodiment, a degassing port is further provided on the water cavity, and the degassing port is arranged at the highest position of the water-cooled turbine shell for exhausting gas.

[0010] In a preferred embodiment, the water outlet and the air inlet are respectively arranged on both sides of the water-cooled turbine shell, the structure is reasonably arranged, and the cooling effect is good.

[0011] In a preferred embodiment, the water-cooled turbine housing and the bearing body are sealed by a sealing ring and connected together by bolts, so that the assembly structure is compact.

[0012] In a preferred embodiment, the water-cooled turbine shell is a turbine shell made of cast aluminum alloy material.

[0013] Compared with the prior art, the utility model has the following beneficial effects: it provides a lightweight water-cooled turbine shell turbocharger, wherein the water-cooled turbine shell is made of cast aluminum alloy material, and the interior of the turbine shell is water-cooled so that its surface temperature does not exceed 250°C, the heat radiation is small, the supercharger heat radiation protection cover can be omitted and the fastener grade can be reduced, the weight of the supercharger is reduced and the cost is reduced, and the engine can also significantly reduce the cost by omitting the protection cover and reducing the material grade of the post-processing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a turbocharger in the present utility model.

[0015] Figure 2 It is a cross-sectional view of the turbocharger in the present utility model.

[0016] Figure 3 It is a schematic diagram of the shape of the water cavity in the water-cooled turbine shell in the utility model.

[0017] Figure 4 It is a cross-sectional view of the water cavity in the water-cooled turbine shell of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] In the following embodiments, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0021] See also Figures 1 to 4 A lightweight water-cooled turbine shell turbocharger involved in the present application includes a turbine assembly, a compressor assembly, a bearing body assembly, and a shaft assembly 22. The turbine assembly includes a water-cooled turbine shell 16, and the water-cooled turbine shell 16 is provided with an air inlet 11 and an air outlet 12, and the air cavity 14 on the water-cooled turbine shell 16 from the air inlet 11 to the air outlet 12 is surrounded by a circle of water cavity 15 for cooling, and the water cavity 15 includes a water inlet 41 and a water outlet 42, and the water inlet 41 is aligned with the airway throat 411, and there is no undercut structure on the water cavity 15, which can be specifically Figure 3 There is no undercut structure at position 1 47, position 2 48, and other similar structures.

[0022] Specifically, in the present application, a degassing port 43 is further provided on the water cavity 15, and the degassing port 43 is arranged at the highest position of the water-cooled turbine shell 16 for exhaust. The water outlet 42 and the air inlet 11 are respectively arranged on both sides of the water-cooled turbine shell 16, and the structure is reasonably arranged and the cooling effect is good.

[0023] In addition, in the present application, the water-cooled turbine shell 16 and the bearing body 3 are sealed by a sealing ring 17 and connected together by bolts 39, and the assembly structure is compact. Further, the water-cooled turbine shell 16 in the present application is a turbine shell made of cast aluminum alloy material.

[0024] In the prior art, the turbine shell is mainly made of high-temperature resistant cast steel or cast iron, which is costly and heavy, and the surface temperature of the turbine shell is high, and the heat radiation is large, so it needs to be insulated and protected. In this application, the water-cooled turbine shell supercharger is made of cast aluminum alloy material, and the inside of the turbine shell is water-cooled so that its surface temperature does not exceed 250°C, and the heat radiation is small. The supercharger heat radiation protection cover can be omitted and the fastener grade can be reduced. The weight of the supercharger is reduced and the cost is reduced. The engine also reduces the cost by omitting the protective cover and reducing the material grade of the post-processing parts.

[0025] The advantages of the water-cooled turbine shell 16 of the turbocharger in the present application are as follows: the turbine shell can reduce the temperature of the entire turbine shell to less than 250°C by cooling the water cavity, so the turbine shell material is cast aluminum alloy, which can reduce the weight of the turbine shell and eliminate the supercharger turbine shell heat shield, and reduce the material grade of the engine post-processing parts. The high-temperature area of ​​the turbine shell is mainly on the airway, especially at the throat of the airway, so the water channel inlet is aligned with the throat of the turbine shell airway at a certain angle (75°~90°), which can increase the coolant flow rate at the throat, thereby improving the cooling effect. The water outlet 42 is symmetrically arranged on the left and right sides of the airway in the direction of the turbine shell air inlet 11, so that the coolant can evenly cool the entire airway. The degassing port is arranged at the highest position of the supercharger turbine shell and there is no hook structure in the direction of the turbine shell air inlet flange in the entire water channel, ensuring that there is no gas gathering in the entire water channel, and the water vapor generated by the boiling of the coolant can be completely discharged from the water channel. After the turbine shell is cooled, the heat transfer from the turbine shell to the bearing body can be greatly reduced, thereby eliminating the water cavity on the original bearing body and reducing the weight of the bearing body. The turbine shell and the bearing body are sealed with O-rings, which have better and more reliable sealing effects than the original plane sealing effects. The bypass hole of the turbine shell is equipped with a bypass seat ring made of high-temperature resistant alloy, which is fitted with interference fit to ensure its wear resistance.

[0026] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A lightweight water-cooled turbine shell turbocharger, comprising a turbine assembly, a compressor assembly, a bearing assembly, and a shaft assembly, wherein the turbine assembly comprises a water-cooled turbine shell (16), characterized in that: The water-cooled turbine shell (16) is provided with an air inlet (11) and an air outlet (12), and a water cavity (15) surrounds the air cavity (14) from the air inlet (11) to the air outlet (12) on the water-cooled turbine shell (16) for cooling, the water cavity (15) comprises a water inlet (41) and a water outlet (42), and the water inlet (41) is aligned with the airway throat (411), and there is no undercut structure on the water cavity (15).

2. A lightweight water-cooled turbine shell turbocharger according to claim 1, characterized in that: The water cavity (15) is also provided with a degassing port (43), and the degassing port (43) is arranged at the highest position of the water-cooled turbine shell (16).

3. A lightweight water-cooled turbine shell turbocharger according to claim 1, characterized in that: The water outlet (42) and the air inlet (11) are respectively arranged on two sides of the water-cooled turbine housing (16).

4. A lightweight water-cooled turbine shell turbocharger according to claim 1, characterized in that: The water-cooled turbine housing (16) and the bearing body (3) are sealed via a sealing ring (17) and are connected together via bolts (39).

5. A lightweight water-cooled turbine shell turbocharger according to any one of claims 1 to 4, characterized in that: The water-cooled turbine shell (16) is a turbine shell made of cast aluminum alloy material.

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