Intermediate structure and engine supercharger

By designing a central through hole, oil inlet hole, flow branch hole, oil collection chamber and oil drain hole in the intermediate structure of the engine turbocharger, the problem of oil leakage caused by uneven lubrication is solved, and effective lubrication and pressure stability of rotating parts are achieved.

CN223469335UActive Publication Date: 2025-10-24BOMA (TAICANG) TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202423082758.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-10-24
Estimated Expiration
2034-12-13

AI Technical Summary

Technical Problem

The existing turbocharger intermediate structure cannot provide targeted lubrication for the internal rotating parts, causing the engine oil to flow along both sides of the rotor axis and accumulate at the front end of the sealing ring, which may cause oil leakage risk.

Method used

An intermediate structure was designed, including a central through hole, an oil inlet hole, a diversion hole, an oil collection chamber, an oil drain hole, and an oil outlet hole, forming a targeted lubrication oil path to ensure lubrication effect while avoiding oil leakage caused by oil accumulation.

Benefits of technology

This achieves targeted lubrication of the rotating parts inside the intermediate body, avoids oil accumulation at the front end of the sealing ring, reduces the risk of oil leakage, and ensures lubrication while stabilizing the internal pressure of the turbocharger.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223469335U_ABST
    Figure CN223469335U_ABST
Patent Text Reader

Abstract

The intermediate structure comprises a central through hole, the central through hole comprises a middle hole section, a vortex end hole section and a pressure end hole section, the vortex end hole section and the pressure end hole section are located at the two ends of the middle hole section respectively, and two oil grooves are formed in the inner wall of the middle hole section at intervals; one end of the oil inlet communicates with the outside, and the other end communicates with one oil groove; the shunting hole penetrates through the oil inlet hole, one end of the shunting hole communicates with one oil groove away from the oil inlet hole, and the other end of the shunting hole communicates with the pressure end hole section; the oil collecting cavity is formed in the side, away from the oil inlet hole, of the middle body; the two ends of the oil drainage hole communicate with the vortex end hole section and the oil collecting cavity correspondingly; the oil outlet hole is communicated with the oil collecting cavity; according to the intermediate structure, the oil way which can lubricate rotating parts such as a bearing installed in the intermediate structure in a targeted mode is arranged, the oil drainage hole is formed in the position where the sealing ring is installed, the good lubricating effect is achieved, and meanwhile the situation of oil leakage caused by accumulation of lubricating oil at the front end of the sealing ring can be avoided.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine supercharger, especially to an intermediate body structure and engine supercharger. BACKGROUND

[0002] The engine supercharger is a device for increasing the intake pressure of the engine, and is widely used in the engines of various vehicles. It not only improves the power performance of the vehicle, but also improves the fuel economy and emission performance of the vehicle.

[0003] During the operation of the engine supercharger, the lubricating oil is used to lubricate the various components inside the intermediate body. The existing intermediate body structure cannot lubricate the rotating parts inside it. During the lubrication process, the oil inside the intermediate body will flow to both sides along the rotor shaft of the supercharger. The flowing part of the oil will gather in front of the seal ring near the vortex end. When the oil pressure inside the intermediate body is high, the oil may squeeze out of the seal ring, causing the risk of oil leakage. SUMMARY

[0004] Therefore, the utility model solves the problem that the engine supercharger needs to use lubricating oil to lubricate the components inside the intermediate body during operation. The existing intermediate body structure cannot lubricate the rotating parts inside it. During the lubrication process, the oil inside the intermediate body will flow to both sides along the rotor shaft of the supercharger. The flowing part of the oil will gather in front of the seal ring near the vortex end. When the oil pressure inside the intermediate body is high, the oil may squeeze out of the seal ring, causing the risk of oil leakage.

[0005] To solve the above technical problems, the utility model provides an intermediate body structure, which comprises,

[0006] A central through hole is coaxially provided on the intermediate body. The central through hole comprises an intermediate hole section and vortex end hole sections and pressure end hole sections located at both ends of the intermediate hole section. Two oil grooves are arranged on the inner wall of the intermediate hole section along the length direction.

[0007] An oil inlet hole is provided on one side of the intermediate body. One end of the oil inlet hole is connected to the outside, and the other end of the oil inlet hole is connected to one of the oil grooves.

[0008] A shunt hole is provided in the intermediate body. The shunt hole penetrates the oil inlet hole, and one end of the shunt hole is connected to one of the oil grooves away from the oil inlet hole, and the other end is connected to the pressure end hole section.

[0009] An oil collecting cavity is provided in the intermediate body and located away from the oil inlet hole.

[0010] An oil drain hole is provided in the intermediate body, and two ends of the oil drain hole are respectively connected to the vortex end hole section and the oil collecting cavity;

[0011] An oil outlet hole is opened on the side of the intermediate body and is connected to the oil collecting cavity.

[0012] In one embodiment of the present invention, the oil collecting chamber is in a bell-mouth shape, and an end of the oil collecting chamber with a small diameter is connected to the oil outlet hole.

[0013] In one embodiment of the present invention, a buffer cavity is provided between the middle hole section and the turbine end hole section, and the buffer cavity is connected to the oil collecting cavity.

[0014] In one embodiment of the present invention, there is an included angle between the diverter hole and the middle hole section, one end of the diverter hole connected to the pressure end hole section is away from the middle hole section, and the other end of the diverter hole away from the pressure end hole section is close to the middle hole section.

[0015] In one embodiment of the present invention, an annular groove is coaxially formed on the inner wall of the middle hole section, the annular groove is located between the two oil grooves, and a through hole communicating with the oil collecting chamber is formed at the bottom of the annular groove.

[0016] In one embodiment of the present invention, a mounting plane is provided on the side of the intermediate body, the oil outlet hole is opened on the mounting plane, and the mounting plane is further provided with connecting holes located on both sides of the oil outlet hole.

[0017] In one embodiment of the present invention, the oil inlet hole includes a large diameter section and a small diameter section connected to each other, one end of the large diameter section is connected to the outside, one end of the small diameter section is connected to the oil tank, and the diversion hole runs through the small diameter section.

[0018] In one embodiment of the present invention, the pressure end hole section is connected to the oil collecting chamber.

[0019] In one embodiment of the present invention, an annular cooling water channel is coaxially provided in the intermediate body.

[0020] An engine supercharger comprises the intermediate structure as described in any one of the above.

[0021] The above technical solution of the utility model has the following advantages compared with the prior art:

[0022] The utility model discloses an intermediate body structure and an engine supercharger, comprising a central through hole opened on the intermediate body, which comprises an intermediate hole section and a vortex end hole section and a pressure end hole section respectively located at both ends of the intermediate hole section, and two oil grooves are opened on the inner wall of the intermediate hole section; an oil inlet hole is opened on one side of the intermediate body, one end of the oil inlet hole is connected to the outside, and the other end is connected to an oil groove; a diverter hole is opened in the intermediate body, the diverter hole passes through the oil inlet hole, and one end of the diverter hole is connected to an oil groove away from the oil inlet hole, and the other end is connected to the pressure end. Hole section; an oil collecting chamber, which is arranged in the intermediate body and is located on the side away from the oil inlet hole; an oil drain hole, whose two ends are respectively connected to the vortex end hole section and the oil collecting chamber; an oil outlet hole, which is opened on the side of the intermediate body and connected to the oil collecting chamber; an intermediate body structure of the utility model is provided in the intermediate body, which can provide an oil circuit for targeted lubrication of rotating parts such as bearings installed therein, and an oil drain hole is provided at the position where the sealing ring is installed, so as to ensure good lubrication effect while avoiding the occurrence of oil leakage caused by the accumulation of lubricating oil at the front end of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0024] Figure 1 This is a three-dimensional diagram of the intermediate structure of a preferred embodiment of the present utility model;

[0025] Figure 2 It is a cross-sectional view of the intermediate structure of a preferred embodiment of the utility model;

[0026] Figure 3 yes Figure 2 An enlarged view of part a of the intermediate structure shown;

[0027] Figure 4 This is a schematic diagram of the internal structure of the intermediate structure of the preferred embodiment of the present utility model;

[0028] Figure 5 yes Figure 4 A magnified view of part b of the intermediate structure is shown.

[0029] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Center through hole; 11. Intermediate hole section; 111. Oil groove; 112. Through hole; 12. Vortex end hole section; 13. Pressure end hole section; 2. Oil inlet hole; 3. Diverter hole; 4. Oil collecting chamber; 5. Oil drain hole; 6. Oil outlet hole; 7. Cooling water channel; A. Radial bearing; B. Thrust bearing; C. Sealing ring. DETAILED DESCRIPTION

[0030] The utility model makes further illustration to the utility model below combining with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation to the utility model. Embodiment one

[0031] Referring to Figures 1-5 The utility model discloses an intermediate structure, comprising,

[0032] The center through hole 1 is coaxially arranged on the intermediate body, and the center through hole 1 comprises a middle hole section 11 and a vortex end hole section 12 and a pressure end hole section 13 located at both ends of the middle hole section 11 respectively, two oil grooves 111 are arranged on the inner wall of the middle hole section 11 and spaced apart along the length direction of the middle hole section 11;

[0033] The oil inlet hole 2 is arranged on one side of the intermediate body, one end of the oil inlet hole 2 is communicated with the outside, and the other end of the oil inlet hole 2 is communicated with one oil groove 111;

[0034] The oil inlet hole 2 is arranged on one side of the intermediate body, one end of the oil inlet hole 2 is communicated with the outside, and the other end of the oil inlet hole 2 is communicated with one oil groove 111;

[0035] The oil inlet hole 2 is arranged on one side of the intermediate body, one end of the oil inlet hole 2 is communicated with the outside, and the other end of the oil inlet hole 2 is communicated with one oil groove 111;

[0036] The oil inlet hole 2 is arranged on one side of the intermediate body, one end of the oil inlet hole 2 is communicated with the outside, and the other end of the oil inlet hole 2 is communicated with one oil groove 111;

[0037] The oil inlet hole 2 is arranged on one side of the intermediate body, one end of the oil inlet hole 2 is communicated with the outside, and the other end of the oil inlet hole 2 is communicated with one oil groove 111;

[0038] Specifically, the oil inlet hole 2 and the oil outlet hole 6 on the intermediate body are connected with the oil circulation device outside, in the process of operation of the engine supercharger, the oil enters the oil inlet hole 2 and is shunted at the position penetrated by the oil inlet hole 2 and the oil distribution hole 3, part of the oil enters two oil grooves 111 to lubricate two radial bearings A installed in the middle hole section 11 (the installation positions of the two radial bearings correspond to the positions of the two oil grooves 111 respectively, and the oil can enter the oil filling hole of the radial bearing through the oil groove 111), and the other part of the oil enters the pressure end hole section 13 to lubricate the thrust bearing B installed therein (the oil enters the oil filling hole of the thrust bearing through one end of the oil distribution hole 3), in the lubrication process, the oil entering the thrust bearing flows into the oil collection cavity 4 from the gap between the thrust bearing and other components, and the oil flowing along the rotor shaft to the vortex end of the supercharger enters the oil collection cavity 4 through the oil leakage hole 5 before the front end of the sealing ring C installed in the vortex end hole section 12, so that the lubrication effect of each component is ensured, and the risk of leakage caused by oil accumulation is avoided.

[0039] The intermediate body structure is characterized in that an oil passage for targeted lubrication of the rotating parts such as bearings installed in the intermediate body is arranged in the intermediate body, and a drain hole 5 is arranged at the position of the sealing ring to ensure good lubrication effect and avoid oil leakage caused by accumulation of lubricating oil in front of the sealing ring.

[0040] Referring to Figure 2 and Figure 3 It is further shown that the oil collecting cavity 4 is in the shape of a trumpet mouth, and one end of the small-diameter portion of the oil collecting cavity 4 is connected with the oil outlet hole 6. It can be conceived that the trumpet-shaped oil collecting cavity 4 can better collect the lubricating oil flowing into it and introduce it into the oil outlet hole 6.

[0041] Further, a buffer cavity is arranged between the intermediate hole section 11 and the vortex end hole section 12, and the buffer cavity is communicated with the oil collecting cavity 4. The buffer cavity can buffer the lubricating oil flowing to the front end of the sealing ring, avoiding the situation that the lubricating oil leaks due to rapid accumulation and internal pressure rise.

[0042] Further, the shunt hole 3 has an included angle with the intermediate hole section 11, one end of the shunt hole 3 communicated with the pressure end hole section 13 is away from the intermediate hole section 11, and the end of the shunt hole 3 away from the pressure end hole section 13 is close to the intermediate hole section 11.

[0043] Further, an annular groove is coaxially arranged on the inner wall of the intermediate hole section 11, the annular groove is located between the two oil grooves 111, and a through hole 112 communicated with the oil collecting cavity 4 is arranged at the bottom of the annular groove. Specifically, two radial bearings are coaxially arranged in the intermediate hole section 11, and a shaft sleeve is arranged between the two bearings in the intermediate hole section 11, and the annular groove is used for limiting the shaft sleeve; at the same time, the annular groove can also play a certain guiding role, the lubricating oil flowing into the annular groove along the rotor shaft enters the oil collecting cavity 4 through the through hole 112 at the bottom of the annular groove, further avoiding the accumulation of lubricating oil in the local position, ensuring the stability of the internal pressure of the supercharger, and avoiding the occurrence of oil leakage.

[0044] Further, an installation plane is arranged on the side surface of the intermediate body, the oil outlet hole 6 is arranged on the installation plane, and connecting holes are arranged on the installation plane and located on both sides of the oil outlet hole, respectively. The installation plane is conducive to the connection of the intermediate body and the external lubricating oil collecting or circulating device.

[0045] Further, the oil inlet hole 2 includes a large-diameter section and a small-diameter section connected with each other, one end of the large-diameter section is communicated with the outside, one end of the small-diameter section is communicated with the oil groove 111, and the shunt hole 3 penetrates the small-diameter section.

[0046] Further, the pressure end hole section 13 communicates with the oil collecting cavity 4. Specifically, the lubricating oil in the thrust bearing in the pressure end hole section 13 enters the oil collecting cavity 4 through the communication position between the pressure end hole section 13 and the oil collecting cavity 4, and the lubricating oil flowing to the pressure end hole section 13 along the rotor shaft also enters the oil collecting cavity 4 from the position.

[0047] Further, the intermediate body is coaxially provided with an annular cooling water channel 7, the input end and the output end of the cooling water channel 7 are connected with external cooling water circulating devices, the intermediate body can be cooled, and the normal operation of the supercharger is facilitated. Embodiment two

[0048] The utility model discloses still a kind of engine supercharger, including the intermediate body structure as embodiment one.

[0049] Obviously, the above embodiment is only for clearly illustrating the example, and is not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the utility model creation.

Claims

1. An intermediate structure, characterized by, The intermediate body comprises: a central through hole coaxially arranged on the intermediate body, the central through hole comprising a middle hole section and a vortex end hole section and a pressure end hole section respectively arranged at both ends of the middle hole section, two oil grooves being arranged on the inner wall of the middle hole section and spaced along the length direction of the middle hole section; an oil inlet hole arranged on one side of the intermediate body, one end of the oil inlet hole being communicated with the outside, and the other end of the oil inlet hole being communicated with one of the oil grooves; a shunt hole arranged in the intermediate body, the shunt hole penetrating the oil inlet hole, one end of the shunt hole being communicated with the oil groove away from the oil inlet hole, and the other end of the shunt hole being communicated with the pressure end hole section; an oil collecting cavity arranged in the intermediate body and located away from the oil inlet hole; an oil discharge hole arranged in the intermediate body, both ends of the oil discharge hole being communicated with the vortex end hole section and the oil collecting cavity respectively; an oil outlet hole arranged on the side surface of the intermediate body and communicated with the oil collecting cavity.

2. The intermediate structure of claim 1, wherein: The oil collecting cavity is in the shape of a trumpet mouth, and one end of the oil collecting cavity with a small diameter is connected with the oil outlet hole.

3. The intermediate structure of claim 1, wherein: A buffer cavity is arranged between the middle hole section and the vortex end hole section, and the buffer cavity is communicated with the oil collecting cavity.

4. The intermediate structure according to claim 1, characterized in that: The shunt hole and the middle hole section have an included angle, one end of the shunt hole communicated with the pressure end hole section is away from the middle hole section, and the other end of the shunt hole away from the pressure end hole section is close to the middle hole section.

5. The intermediate structure of claim 1, wherein: An annular groove is coaxially arranged on the inner wall of the middle hole section, the annular groove is located between the two oil grooves, and a through hole communicated with the oil collecting cavity is arranged on the bottom of the annular groove.

6. The intermediate structure of claim 1, wherein: An installation plane is arranged on the side surface of the intermediate body, the oil outlet hole is arranged on the installation plane, and a connecting hole is further arranged on the installation plane and located on both sides of the oil outlet hole.

7. The intermediate structure of claim 1, wherein: The oil inlet hole comprises a large diameter section and a small diameter section connected with each other, one end of the large diameter section is communicated with the outside, one end of the small diameter section is communicated with the oil groove, and the shunt hole penetrates the small diameter section.

8. The intermediate structure of claim 1, wherein: The pressure end hole section is communicated with the oil collecting cavity.

9. The intermediate structure of claim 1, wherein: A ring-shaped cooling water channel is coaxially arranged in the intermediate body.

10. An engine supercharger characterized by: The intermediate body structure according to any one of claims 1-9 is provided.