Compressor composite pressure shell, compressor and turbocharger

Abstract

The utility model discloses a gas compressor composite pressing shell, a gas compressor and a turbocharger. The composite pressure shell of the gas compressor comprises a shell body and a reinforcing ring. An air inlet channel is defined by the shell, and the shell is a cast aluminum part; the reinforcing ring is connected to the shell in an integrated forming mode, at least part of the reinforcing ring is located in the air inlet channel and covers the inner wall of the air inlet channel, and the reinforcing ring is a structural steel part. The composite pressure shell of the gas compressor can have high inclusiveness under the condition that the weight is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the turbocharger technical field, especially to a compressor composite pressure shell, a compressor and a turbocharger. BACKGROUND

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] In the related art, the cast iron pressure shell of the turbocharger has good containment, but has high weight and is prone to resonance, and the cast aluminum pressure shell has low weight but poor containment. The containment refers to the ability of the shell of the compressor to contain the fragments of the burst pressure wheel.

[0004] Therefore, how to make the pressure shell of the turbocharger have high containment with low weight is an important research direction. Utility model content

[0005] The purpose of the present application is to at least solve the problem of how to make the pressure shell of the turbocharger have high containment with low weight. The purpose is achieved in the following way:

[0006] The first aspect of the present application provides a compressor composite pressure shell, comprising a shell and a reinforcing ring. The shell defines an air inlet channel, and the shell is a cast aluminum part; the reinforcing ring is connected to the shell in an integral forming manner, at least part of the reinforcing ring is located in the air inlet channel and covers the inner wall of the air inlet channel, and the reinforcing ring is a structural steel part.

[0007] The compressor composite pressure shell of the present application makes the reinforcing ring a structural steel part, so that the strength of the reinforcing ring is high. Since at least part of the reinforcing ring is located in the air inlet channel and covers the inner wall of the air inlet channel, when the pressure wheel bursts, the fragments generated by the pressure wheel can be intercepted by the reinforcing ring with high strength when flying to the inner wall of the air inlet channel. Therefore, by making the reinforcing ring a structural steel part and locating at least part of the reinforcing ring in the air inlet channel and covering the inner wall of the air inlet channel, the compressor composite pressure shell of the present embodiment can have high containment. By making the shell a cast aluminum part, the weight of the shell can be reduced, thereby reducing the probability of resonance of the compressor composite pressure shell of the present embodiment. By connecting the reinforcing ring to the shell in an integral forming manner, the connection stability between the reinforcing ring and the shell can be improved, so that the reinforcing ring and the shell can vibrate integrally when vibrating, so as to avoid independent vibration between the reinforcing ring and the shell.

[0008] In some embodiments, the reinforcing ring comprises a reinforcing portion and an extending portion, the reinforcing portion covers the inner wall of the air inlet channel, the shell further defines a compression cavity in communication with the air inlet channel, the compression cavity is used for compressing gas, the extending portion is located in the compression cavity and covers the inner wall of the compression cavity.

[0009] In some embodiments, the shell further defines a first fitting groove on the inner wall of the air inlet channel, and the reinforcing ring further comprises a first fitting rib connected to the reinforcing portion, the first fitting rib is fitted in the first fitting groove.

[0010] In some embodiments, the first fitting rib extends along the circumferential direction of the reinforcing portion and is annularly arranged on the reinforcing portion, and the first fitting groove extends along the circumferential direction of the reinforcing portion and is annularly arranged on the inner wall of the air inlet channel.

[0011] In some embodiments, the first fitting rib and the first fitting groove are both provided with a plurality of first fitting ribs and a plurality of first fitting grooves, and the plurality of first fitting ribs are fitted in the plurality of first fitting grooves one by one.

[0012] In some embodiments, the shell further defines a second fitting groove outside the air inlet channel, and the reinforcing ring further comprises a second fitting rib connected to the extending portion, the second fitting rib is fitted in the second fitting groove.

[0013] In some embodiments, the second fitting rib extends along the circumferential direction of the extending portion and is annularly arranged on the extending portion, and the second fitting groove extends along the circumferential direction of the extending portion and is annularly arranged on the inner wall of the compression cavity.

[0014] In some embodiments, the second fitting rib and the second fitting groove are both provided with a plurality of second fitting ribs and a plurality of second fitting grooves, and the plurality of second fitting ribs are fitted in the plurality of second fitting grooves one by one.

[0015] The second aspect of the present application provides a compressor, comprising: the compressor compound shell and the compressor wheel as described in the first aspect above, the compressor wheel is rotatably installed on the shell, and at least part of the compressor wheel is located in the air inlet channel.

[0016] The third aspect of the present application provides a turbocharger, comprising a turbine and the compressor as described in the second aspect above. The turbine comprises a shell and a turbine wheel, the turbine wheel is rotatably arranged on the shell, and the turbine wheel and the compressor wheel are in transmission connection. BRIEF DESCRIPTION OF DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting, of the present application. Furthermore, where used in the appended claims, the singular "a", "an" and "the" are to be read as meaning "at least one" and "one or more". In the drawings:

[0018] Figure 1 Partial view of a turbocharger according to some embodiments of the present application;

[0019] Figure 2 Partial view of a turbocharger according to some embodiments of the present application;

[0020] The reference signs in the drawings represent the following items:

[0021] 100 turbocharger;

[0022] 110 compressor; 111 compressor composite shell; 112 compressor wheel;

[0023] 1 housing; 11 intake passage; 12 compression chamber;

[0024] 2 reinforcing ring; 21 reinforcing portion; 22 extension portion; 23 first fitting rib; 24 second fitting rib. DETAILED DESCRIPTION

[0025] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are illustrated, it is to be understood that the present application is not limited to the embodiments described herein, but can be practiced with variation within the scope and spirit of the present application. Rather, the present application is provided as illustrative examples so as to convey the scope and breadth of the present application to those skilled in the art.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are to be construed to be inclusive (i.e. to mean "including, but not limited to"), unless otherwise indicated as being term of exclusivity by context. Method steps, processes, and operations described and claimed herein are not to be construed as necessarily requiring their performance in the particular order

[0027] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure rotates, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0029] In the description of the application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "height direction", "first direction", "second direction", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0030] In this application, unless otherwise clearly indicated and limited, the terms "mount", "connect", "connection", "fix", and like terms should be understood broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, or electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0031] In the related art, the containment of the cast iron pressure shell of the turbocharger is good, but the weight is high, and resonance is easy to occur, so that the cast iron pressure shell is difficult to pass in the modal calculation test. The modal calculation test refers to the process of analyzing the natural frequency, mode shape and damping ratio of the structure under different vibration modes through mathematical model. Containment refers to the ability of the shell of the compressor to contain the fragments of the impeller burst when the impeller bursts.

[0032] The cast aluminum pressure shell has a lower weight, but the containment is poor, so that the fragments generated when the impeller bursts can easily penetrate the cast aluminum pressure shell.

[0033] Therefore, how to make the pressure shell of the turbocharger have high containment with low weight is an important research direction.

[0034] In order to at least solve the problem of how to make the pressure shell of the turbocharger have high containment with low weight, the embodiments of the present application propose a compressor composite pressure shell 111 which can have high containment with low weight.

[0035] The embodiments of the present application also propose a compressor 110 comprising the compressor composite pressure shell 111 of the above embodiments.

[0036] The embodiments of the present application also propose a turbocharger 100 comprising the compressor 110 of the above embodiments.

[0037] The compressor composite pressure shell 111, the compressor 110 and the turbocharger 100 of the embodiments of the present application will be described below with reference to the accompanying drawings. Among them, Figure 1 The turbocharger of some embodiments of the present application is shown schematically, Figure 2 The turbocharger of some embodiments of the present application is shown schematically.

[0038] As Figure 1As shown, the compressor composite casing 111 of this application embodiment includes a casing 1 and a reinforcing ring 2. The casing 1 defines an air intake duct 11, and the casing 1 is made of cast aluminum; the reinforcing ring 2 is integrally formed and connected to the casing 1, at least a portion of the reinforcing ring 2 is located inside the air intake duct 11 and covers the inner wall of the air intake duct 11, and the reinforcing ring 2 is made of structural steel.

[0039] The reinforcing ring 2 is made of structural steel, therefore it has high strength. Since at least part of the reinforcing ring 2 is located inside the intake duct 11 and covers the inner wall of the intake duct 11, when the pressure roller 112 bursts, the fragments generated by the pressure roller 112 can be intercepted by the high-strength reinforcing ring 2 as they fly towards the inner wall of the intake duct 11. For example... Figure 1 As shown, a portion of the pressure roller 112 is located within the intake duct 11, and fragments generated when the pressure roller 112 bursts easily fly into the intake duct 11. Therefore, by positioning at least a portion of the reinforcing ring 2 within the intake duct 11 and covering its inner wall, the interception capacity of the reinforcing ring 2 for fragments is increased. In summary, by positioning the reinforcing ring 2 as structural steel and positioning at least a portion of the reinforcing ring 2 within the intake duct 11 and covering its inner wall, the compressor composite casing 111 of this embodiment can achieve higher containment capacity.

[0040] By making the housing 1 a cast aluminum component, the weight of the housing 1 can be reduced, thereby reducing the probability of resonance in the compressor composite housing 111 of this embodiment. For example, the weight of the compressor composite housing 111 of this embodiment can be reduced by 37% compared to the weight of a cast iron housing, and the frequency of the first-order modal calculation test can be increased by 14 Hz, thereby reducing the frequency at which resonance occurs.

[0041] By connecting the reinforcing ring 2 to the housing 1 in an integral manner, the connection stability between the reinforcing ring 2 and the housing 1 can be increased, thereby enabling the reinforcing ring 2 and the housing 1 to vibrate as a whole during vibration, so as to avoid the independent vibration between the reinforcing ring 2 and the housing 1.

[0042] The compressor composite casing 111 of this embodiment features a high-strength reinforcing ring 2 made of structural steel. Since at least a portion of the reinforcing ring 2 is located within the intake duct 11 and covers its inner wall, fragments from the pressure roller 112 can be intercepted by the high-strength reinforcing ring 2 when they fly towards the inner wall of the intake duct 11 during a burst. Therefore, by using structural steel for the reinforcing ring 2 and ensuring at least a portion of it is located within the intake duct 11 and covers its inner wall, the compressor composite casing 111 of this embodiment exhibits high containment capacity. By making the casing 1 a cast aluminum component, its weight is reduced, thereby lowering the probability of resonance in the compressor composite casing 111 of this embodiment. By integrally connecting the reinforcing ring 2 to the casing 1, the connection stability between the reinforcing ring 2 and the casing 1 is increased, allowing the reinforcing ring 2 and casing 1 to vibrate as a unit during vibration, thus preventing independent vibrations between them.

[0043] Preferably, the reinforcing ring 2 is connected to the housing 1 by die casting, so that the reinforcing ring 2 and the housing 1 can be integrally connected, thereby increasing the connection stability between the reinforcing ring 2 and the housing 1.

[0044] Combination Figure 1 and Figure 2 As shown, in some embodiments, the reinforcing ring 2 includes a reinforcing portion 21 and an extension portion 22 connected to each other. The reinforcing portion 21 covers the inner wall of the air intake duct 11. The housing 1 also defines a compression chamber 12 communicating with the air intake duct 11. The compression chamber 12 is used to compress gas. The extension portion 22 is located in the compression chamber 12 and covers the inner wall of the compression chamber 12.

[0045] like Figure 2 As shown, another part of the pressure roller 112 is located inside the air compression chamber 12 and is used to compress gas.

[0046] The extension 22 is located inside the compressor chamber 12 and covers the inner wall of the compressor chamber 12. When the compressor wheel 112 bursts, the extension 22 can intercept the fragments generated by the compressor wheel 112 inside the compressor chamber 12, thereby further increasing the containment of the compressor composite casing 111 of this embodiment.

[0047] Furthermore, the housing 1 also defines an exhaust passage that communicates with the compression chamber 12. Gas enters the compression chamber 12 through the intake passage 11, is compressed, and is discharged through the exhaust passage.

[0048] Combination Figure 1 and Figure 2As shown in the drawings, in some embodiments, the shell 1 further defines a first embedding groove (not shown in the drawings) on the inner wall of the air inlet channel 11, and the reinforcing ring 2 further comprises a first embedding rib 23 connected with the reinforcing portion 21, the first embedding rib 23 being embedded in the first embedding groove.

[0049] By setting the first embedding groove and the first embedding rib 23, and embedding the first embedding rib 23 in the first embedding groove, the connection stability and strength between the reinforcing portion 21 and the shell 1 can be increased, so that the reinforcing ring 2 can be more stably connected with the shell 1.

[0050] In combination Figure 1 and Figure 2 As shown in the drawings, in some embodiments, the first embedding rib 23 extends along the circumferential direction of the reinforcing portion 21 and is annularly arranged on the reinforcing portion 21, and the first embedding groove (not shown in the drawings) extends along the circumferential direction of the reinforcing portion 21 and is annularly arranged on the inner wall of the air inlet channel 11.

[0051] By annularly arranging the first embedding rib 23 on the reinforcing portion 21 and the first embedding groove on the inner wall of the air inlet channel 11, the size of the first embedding rib 23 embedded in the first embedding groove can be increased, so that the connection stability and strength between the reinforcing portion 21 and the shell 1 can be further increased.

[0052] In combination Figure 1 and Figure 2 As shown in the drawings, in some embodiments, the first embedding rib 23 and the first embedding groove (not shown in the drawings) are both provided with a plurality of ones, and the plurality of first embedding ribs 23 are embedded in the plurality of first embedding grooves one by one.

[0053] By setting the plurality of first embedding ribs 23 and the first embedding grooves, the connection stability and strength between the reinforcing portion 21 and the shell 1 can be further increased.

[0054] In combination Figure 1 and Figure 2 As shown in the drawings, in some embodiments, the shell 1 further defines a second embedding groove (not shown in the drawings) outside the air inlet channel 11, and the reinforcing ring 2 further comprises a second embedding rib 24 connected with the extending portion 22, the second embedding rib 24 being embedded in the second embedding groove.

[0055] By setting the second embedding groove and the second embedding rib 24, and embedding the second embedding rib 24 in the second embedding groove, the connection stability and strength between the extending portion 22 and the shell 1 can be increased, so that the reinforcing ring 2 can be more stably connected with the shell 1.

[0056] In combination Figure 1 and Figure 2As shown, in some embodiments, the second embedded ribs 24 extend along the circumferential direction of the extension 22 and are arranged around the extension 22, and the second embedded grooves (not shown in the figure) extend along the circumferential direction of the extension 22 and are arranged around the inner wall of the compression cavity 12.

[0057] By arranging the second embedded ribs 24 around the extension 22 and arranging the second embedded grooves around the inner wall of the compression cavity 12, the size of the second embedded ribs 24 embedded in the second embedded grooves can be increased, thereby further increasing the connection stability and strength between the extension 22 and the shell 1.

[0058] In some embodiments, a plurality of second embedded ribs 24 and a plurality of second embedded grooves are arranged, and the plurality of second embedded ribs 24 are one-to-one embedded in the plurality of second embedded grooves.

[0059] By arranging a plurality of second embedded ribs 24 and a plurality of second embedded grooves, the connection stability and strength between the extension 22 and the shell 1 can be further increased.

[0060] As shown, the turbocharger 100 of the embodiment of the present application comprises the turbocharger composite compression shell 111 and the compressor wheel 112 of the above embodiment, and the compressor wheel 112 is rotatably arranged in the shell 1. Figure 1

[0061] The turbocharger 100 of the embodiment of the present application comprises the turbocharger composite compression shell 111 of the above embodiment. By arranging the reinforcing ring 2 as a structural steel part, the strength of the reinforcing ring 2 is higher. Since at least part of the reinforcing ring 2 is arranged in the air inlet channel 11 and covers the inner wall of the air inlet channel 11, when the compressor wheel 112 bursts, the fragments generated by the compressor wheel 112 can be intercepted by the reinforcing ring 2 with higher strength when flying towards the inner wall of the air inlet channel 11. Therefore, by arranging the reinforcing ring 2 as a structural steel part and arranging at least part of the reinforcing ring 2 in the air inlet channel 11 and covering the inner wall of the air inlet channel 11, the turbocharger composite compression shell 111 of the embodiment can have higher containment. By arranging the shell 1 as a cast aluminum part, the weight of the shell 1 can be reduced, thereby reducing the probability of resonance of the turbocharger composite compression shell 111 of the embodiment. By arranging the reinforcing ring 2 to be connected to the shell 1 in an integral manner, the connection stability between the reinforcing ring 2 and the shell 1 can be increased, thereby enabling the reinforcing ring 2 and the shell 1 to vibrate integrally when vibrating, so as to avoid independent vibrations between the reinforcing ring 2 and the shell 1.

[0062] The turbocharger 100 of the embodiment of the present application comprises a turbine (not shown in the figure) and the turbocharger 110 of the above embodiment. The turbine comprises an outer shell (not shown in the figure) and a turbine wheel (not shown in the figure), and the turbine wheel is rotatably arranged in the outer shell; the turbine wheel and the compressor wheel 112 are in transmission connection.

[0063] ​The turbocharger 100 of the embodiment of the present application comprises the compressor 110 of the above embodiment, the compressor compound casing 111 of the compressor 110, by making the reinforcing ring 2 a structural steel piece, so that the strength of the reinforcing ring 2 is higher, since at least part of the reinforcing ring 2 is located in the air inlet channel 11 and covers the inner wall of the air inlet channel 11, when the impeller 112 explodes, the fragments generated by the impeller 112 when flying to the inner wall of the air inlet channel 11 can be intercepted by the reinforcing ring 2 with higher strength. Therefore, by making the reinforcing ring 2 a structural steel piece, and locating at least part of the reinforcing ring 2 in the air inlet channel 11 and covering the inner wall of the air inlet channel 11, the compressor compound casing 111 of the embodiment can have higher containment. By making the casing 1 a cast aluminum piece, the weight of the casing 1 can be reduced, thereby reducing the probability of resonance of the compressor compound casing 111 of the embodiment. By making the reinforcing ring 2 connected to the casing 1 in an integral manner, the connection stability between the reinforcing ring 2 and the casing 1 can be increased, so that the reinforcing ring 2 and the casing 1 can vibrate integrally when vibrating, so as to avoid independent vibration between the reinforcing ring 2 and the casing 1.

[0064] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A composite compressor casing, characterized in that, include: A housing that defines an air intake passage; the housing is a cast aluminum component. A reinforcing ring is integrally formed and connected to the housing. At least part of the reinforcing ring is located inside the air intake and covers the inner wall of the air intake. The reinforcing ring is a structural steel component.

2. The compressor composite casing according to claim 1, characterized in that, The reinforcing ring includes a reinforcing portion and an extension portion connected to each other. The reinforcing portion covers the inner wall of the air intake passage. The housing also defines a compression chamber communicating with the air intake passage. The compression chamber is used to compress gas. The extension portion is located in the compression chamber and covers the inner wall of the compression chamber.

3. The compressor composite casing according to claim 2, characterized in that, The housing further defines a first fitting groove located on the inner wall of the air intake, and the reinforcing ring further includes a first fitting rib connected to the reinforcing portion, the first fitting rib being fitted into the first fitting groove.

4. The compressor composite casing according to claim 3, characterized in that, The first fitting rib extends along the circumferential direction of the reinforcing part and is arranged around the reinforcing part; the first fitting groove extends along the circumferential direction of the reinforcing part and is arranged around the inner wall of the air intake.

5. The compressor composite casing according to claim 4, characterized in that, Multiple first interlocking ribs and multiple first interlocking grooves are provided, and multiple first interlocking ribs are embedded in multiple first interlocking grooves in a one-to-one correspondence.

6. The compressor composite casing according to claim 2, characterized in that, The housing further defines a second fitting groove located outside the air intake, and the reinforcing ring further includes a second fitting rib connected to the extension, the second fitting rib being fitted into the second fitting groove.

7. The compressor composite casing according to claim 6, characterized in that, The second fitting rib extends along the circumferential direction of the extension and is arranged around the extension. The second fitting groove extends along the circumferential direction of the extension and is arranged around the inner wall of the air chamber.

8. The compressor composite casing according to claim 7, characterized in that, Both the second interlocking rib and the second interlocking groove are provided in multiples, and the multiple second interlocking ribs are embedded in the multiple second interlocking grooves in a one-to-one correspondence.

9. A compressor, characterized in that, include: The compressor composite casing as described in any one of claims 1 to 8; The pressure roller is rotatably mounted on the housing, with a portion of the pressure roller located within the air intake duct.

10. A turbocharger, characterized in that, include: A turbine includes a housing and a turbine, the turbine being rotatably disposed on the housing; The compressor as described in claim 9, wherein the turbine and the pressure wheel are driven together.

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