CN211117111U - Floating bearing of turbocharger - Google Patents
Floating bearing of turbocharger Download PDFInfo
- Publication number
- CN211117111U CN211117111U CN201921443174.XU CN201921443174U CN211117111U CN 211117111 U CN211117111 U CN 211117111U CN 201921443174 U CN201921443174 U CN 201921443174U CN 211117111 U CN211117111 U CN 211117111U
- Authority
- CN
- China
- Prior art keywords
- bearing body
- oil
- rotor
- shaft hole
- turbocharger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 3
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 49
- 239000010687 lubricating oil Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Abstract
The utility model discloses a floating bearing of a turbocharger, which comprises a cylindrical bearing body, wherein a shaft hole which extends along the axial direction of the bearing body and is used for inserting a rotor is arranged in the middle of the bearing body; two shaft ends of the inner side wall of the shaft hole are respectively provided with an inclined plane, so that a part on the inner side wall of the shaft hole and between the two inclined planes is formed into a supporting part for supporting the rotor, and the axial width of the supporting part is matched with the model of the rotor; in addition, a circle of oil guide ring groove is concavely arranged on the outer side wall of the bearing body, a plurality of oil inlet holes are formed in the groove bottom of the oil guide ring groove, and the oil inlet holes are respectively opened on the supporting parts. The floating bearing of the turbocharger can ensure that an oil film layer with enough thickness is formed between the shaft hole and the rotor to adapt to the requirement of higher rotating speed, so that the stability of the system is greatly improved; and subsynchronous squeal of the supercharger can be effectively reduced, and the driving experience is optimized.
Description
Technical Field
The utility model relates to a turbo charger technical field specifically provides a turbo charger's floating bearing.
Background
The turbocharger is actually an air compressor, which mainly comprises a pump impeller and a turbine, wherein the pump impeller and the turbine are connected by a shaft, namely a rotor, the pump impeller is driven by exhaust gas discharged by an engine, the pump impeller drives the turbine to rotate, and the turbine rotates to pressurize an air inlet system. The supercharger is arranged on the exhaust side of the engine, so that the working temperature of the supercharger is very high, the rotating speed of a rotor of the supercharger is very high during working, the rotating speed can reach hundreds of thousands of revolutions per minute, common mechanical roller pins or ball bearings cannot work for the rotor due to the high rotating speed and temperature, therefore, the turbocharger generally adopts a floating bearing, the engine oil is used for lubricating the floating bearing, and the cooling liquid is used for cooling the supercharger.
However, the existing floating bearing structure has some disadvantages: in order to adapt to application of higher rotating speed, the rotor needs to rotate at very high rotating speed, a thicker oil film is required to be formed inside the floating bearing to bear pressure generated when the rotor system rotates at high speed, and in addition, the floating bearings sleeved on the rotor are symmetrically arranged, so that oil film oscillation can be caused when the rotor rotates at high speed, and low-frequency oscillation (500-1000 hz) can be transmitted to the outside through the shell to generate sub-synchronous squeal of the supercharger, so that the driving experience is influenced.
In view of this, the present invention is especially provided.
Disclosure of Invention
In order to overcome the defects, the utility model provides a floating bearing of a turbocharger, which can ensure that an oil film layer with enough thickness is formed between the shaft hole and the rotor to adapt to the requirement of higher rotating speed, so that the system stability is greatly improved; and subsynchronous squeal of the supercharger can be effectively reduced, and the driving experience is optimized.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a floating bearing of a turbocharger comprises a cylindrical bearing body, wherein a shaft hole which extends along the axial direction of the bearing body and is used for inserting a rotor is arranged in the middle of the bearing body; two axial ends of the inner side wall of the shaft hole are respectively provided with an inclined plane, so that a part on the inner side wall of the shaft hole and between the two inclined planes is formed into a supporting part for supporting a rotor, and the axial width of the supporting part is matched with the model of the rotor;
in addition the oil annular is led to the concave round that is equipped with on the lateral wall of bearing body, lead and seted up a plurality of inlet ports on the tank bottom of oil annular, and be a plurality of the inlet port still all respectively open in on the supporting part.
As a further improvement of the present invention, both of the two inclined planes extend obliquely along the axial direction of the bearing body, and both of the two inclined planes are annular extending along the circumferential direction of the bearing body;
in addition, two the inclined plane all has first contained angle for the axis of bearing body, and two first contained angle is 200～600。
As a further improvement of the utility model, the oil guide ring groove is arranged at the middle position of the outer side wall of the bearing body; lead the both sides wall of oil annular all to bearing body's axis all has the second contained angle, and two the second contained angle is 600～900。
As the utility model discloses a further improvement, it is a plurality of the inlet port is followed the circumference of bearing body is the equidistance interval and arranges, and is a plurality of the inlet port still is cylindrical hole or circular cone shape hole.
As a further improvement of the utility model, the outer surface of the bearing body and the oil guide ring groove are equally divided into a zinc-nickel alloy layer.
The utility model has the advantages that: the utility model discloses a sunken round of being equipped with on the lateral wall of bearing body leads the oil annular, and lead set up a plurality ofly all link up respectively on the tank bottom of oil annular lead in the inlet port in shaft hole, so when the during operation, lubricating oil can certainly lead the oil inlet on the oil annular and get into in the shaft hole, then, lead the setting of oil annular and just can make lubricating oil get into with a mode that lasts, capacity in the shaft hole, thereby help form the oil film layer of enough thickness between supporting part and the rotor and adapt to higher rotational speed requirement for system stability can promote greatly. Additionally, the utility model discloses still be in the diaxon department of shaft hole inside wall equallys divide and do not is formed with an inclined plane, can make the supporting part width that is used for supporting the rotor on the shaft hole inside wall reduces, works as lubricating oil certainly the inlet port gets into when in the shaft hole the oil film layer width that forms on the supporting part will reduce to make oil film layer oscillation excitation range reduce, and then can effectively reduce the booster subsynchronous squeal, optimize the driving experience.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of a turbocharger floating bearing according to the present invention;
fig. 2 is a schematic cross-sectional structure view of a first embodiment of the turbocharger floating bearing according to the present invention (in a case where two side walls of the oil guide ring groove are inclined walls and the oil inlet hole is a conical hole);
fig. 3 is a schematic cross-sectional structure diagram of a second embodiment of the turbocharger floating bearing according to the present invention (in a case where two side walls of the oil guide ring groove are vertical walls and the oil inlet hole is a conical hole);
fig. 4 is a schematic cross-sectional structure diagram of a third embodiment of the turbocharger floating bearing according to the present invention (in a case where two side walls of the oil guide ring groove are inclined walls and the oil inlet hole is a cylindrical hole);
fig. 5 is a schematic cross-sectional view of a fourth embodiment of the turbocharger floating bearing according to the present invention (in the case where the two side walls of the oil guide ring groove are vertical walls and the oil inlet hole is a cylindrical hole).
The following description is made with reference to the accompanying drawings:
1-bearing body 2-shaft hole
20-inclined plane 21-supporting part
3-oil guide ring groove 4-oil inlet
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and the present invention is not limited to the embodiments described in the present application.
It should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relation or adjustment of the size should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the function and the achievable purpose of the present invention.
Example 1:
referring to fig. 1 and fig. 2, a schematic perspective structure diagram and a schematic cross-sectional structure diagram of a first embodiment of a floating bearing of a turbocharger according to the present invention are shown, respectively.
The floating bearing of the turbocharger comprises a cylindrical bearing body 1, a shaft hole 2 which extends along the axial direction of the bearing body 1 and is used for inserting a rotor is arranged in the middle of the bearing body 1, two shaft ends of the inner side wall of the shaft hole 2 are respectively provided with an inclined plane 20, so that a part between the two inclined planes 20 on the inner side wall of the shaft hole 2 forms a supporting part 21 for supporting the rotor, and the axial width of the supporting part 21 is matched with the model of the rotor; in addition the concave oil ring groove 3 that leads of round is equipped with on the lateral wall of bearing body 1, lead and seted up a plurality of inlet ports 4 on the tank bottom of oil ring groove 3, and be a plurality of inlet ports 4 still all open respectively in on the supporting part 21. When the lubricating oil pump works, lubricating oil enters the shaft hole from the oil guide ring groove and the oil inlet hole on the oil guide ring groove, and the lubricating oil can enter the shaft hole in a continuous and sufficient mode through the arrangement of the oil guide ring groove, so that an oil film layer with sufficient thickness is formed between the supporting part and the rotor to adapt to the requirement of high rotating speed of the rotor, and the stability of the system is greatly improved; and by means of the inclined plane, the width of the supporting part which is arranged on the inner side wall of the shaft hole and used for supporting the rotor can be reduced, so that when lubricating oil enters the shaft hole from the oil inlet hole, the width of an oil film layer formed on the supporting part can be reduced, the oscillation excitation amplitude of the oil film layer is reduced, and the subsynchronous squeal of the supercharger can be effectively reduced.
In this embodiment, preferably, both the inclined surfaces 20 extend obliquely in the axial direction of the bearing body 1, and at the same time, both the inclined surfaces 20 are circular rings extending in the circumferential direction of the bearing body 1;
in addition, two inclined planes 20 have first included angles relative to the axis of the bearing body 1, and the first included angles are both 200～600More preferably 400Left and right. When the oil-spraying device works, the inclined plane with the first included angle can enable redundant lubricating oil in the shaft hole to be discharged quickly, so that a thick oil film is prevented from being formed in the shaft hole.
In this embodiment, preferably, the oil guide ring groove 3 is disposed at a middle position of the outer side wall of the bearing body 1, and of course, the oil guide ring groove 3 is also correspondingly located at a middle position of the support portion; lead the both sides wall of oil ring groove 3 all have the second contained angle for the axis of bearing body 1, two the second contained angle is all not less than 600While the two second included angles are both smaller than 900Namely: relative to the axis of the bearing body 1, two side walls of the oil guide ring groove 3 are inclined walls.
In this embodiment, preferably, the oil inlet holes 4 are arranged along the circumferential direction of the bearing body 1 at equal intervals, and the oil inlet holes 4 are all conical holes.
In this embodiment, it is preferable that the outer surface of the bearing body 1 and the oil guide ring groove 3 are plated with a zinc-nickel alloy layer, respectively, so as to improve the anti-rust performance of the product.
Example 2:
fig. 3 is a schematic cross-sectional view of a floating bearing of a turbocharger according to a second embodiment of the present invention.
The turbocharger floating bearing structure shown in embodiment 2 is basically the same as that shown in embodiment 1, and the main difference is that: in embodiment 2, both side walls of the oil guide ring groove 3 are vertical walls with respect to the axis of the bearing body 1.
Example 3:
fig. 4 is a schematic cross-sectional view of a floating bearing of a turbocharger according to a third embodiment of the present invention.
The turbocharger floating bearing structure shown in embodiment 3 is basically the same as that shown in embodiment 1, and the main difference is that: in embodiment 3, each of the plurality of oil inlet holes 4 is a cylindrical hole.
Example 4:
fig. 5 is a schematic cross-sectional view of a turbocharger floating bearing according to a fourth embodiment of the present invention.
The turbocharger floating bearing structure shown in embodiment 4 is basically the same as that shown in embodiment 1, and the main difference is that: in embodiment 4, both side walls of the oil guide ring groove 3 are vertical walls with respect to the axis of the bearing body 1; and a plurality of the oil inlet holes 4 are cylindrical holes.
To sum up, the floating bearing of the turbocharger of the utility model can ensure that an oil film layer with enough thickness is formed between the shaft hole and the rotor to adapt to the requirement of higher rotating speed, so that the system stability is greatly improved; and subsynchronous squeal of the supercharger can be effectively reduced, and the driving experience is optimized.
The above embodiments are merely illustrative of the efficacy of the present invention, and not intended to limit the present invention, and it should be noted that, for those skilled in the art, a number of modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be considered as within the scope of the present invention.
Claims (4)
1. A floating bearing of a turbocharger comprises a cylindrical bearing body (1), wherein a shaft hole (2) which extends along the axial direction of the bearing body (1) and is used for inserting a rotor is arranged in the middle of the bearing body (1); the method is characterized in that: inclined planes (20) are respectively formed at two axial ends of the inner side wall of the shaft hole (2), so that a part on the inner side wall of the shaft hole (2) and between the two inclined planes (20) is formed into a supporting part (21) for supporting a rotor, and the axial width of the supporting part (21) is matched with the model of the rotor;
in addition, the outer side wall of the bearing body (1) is concavely provided with a circle of oil guide ring grooves (3), the oil guide ring grooves (3) are arranged at the middle position of the outer side wall of the bearing body (1), the two side walls of the oil guide ring grooves (3) are opposite to the axis of the bearing body (1) and are provided with second included angles, and the second included angles are 60 degrees0～900(ii) a Lead and seted up a plurality of inlet port (4) on the tank bottom of oil ring groove (3), and be a plurality of inlet port (4) still all open respectively in on supporting part (21).
2. The turbocharger floating bearing according to claim 1, wherein: the two inclined planes (20) extend obliquely along the axial direction of the bearing body (1), and meanwhile, the two inclined planes (20) are both circular rings extending along the circumferential direction of the bearing body (1);
in addition, the two inclined planes (20) have first included angles relative to the axis of the bearing body (1), and the two first included angles are both 200～600。
3. The turbocharger floating bearing according to claim 1, wherein: a plurality of oil inlet (4) are followed the circumference of bearing body (1) is equidistance interval and arranges, and is a plurality of oil inlet (4) still are cylindrical hole or circular cone shape hole.
4. The turbocharger floating bearing according to claim 1, wherein: and the outer surface of the bearing body (1) and the oil guide ring groove (3) are respectively plated with a zinc-nickel alloy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921443174.XU CN211117111U (en) | 2019-09-02 | 2019-09-02 | Floating bearing of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921443174.XU CN211117111U (en) | 2019-09-02 | 2019-09-02 | Floating bearing of turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117111U true CN211117111U (en) | 2020-07-28 |
Family
ID=71690320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921443174.XU Active CN211117111U (en) | 2019-09-02 | 2019-09-02 | Floating bearing of turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211117111U (en) |
-
2019
- 2019-09-02 CN CN201921443174.XU patent/CN211117111U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7753591B2 (en) | Turbocharger bearing and associated components | |
| CN104870758B (en) | Fluid film taper or the floating type collar bearing of hemispherical | |
| WO2009095985A1 (en) | Supercharger | |
| WO2017046842A1 (en) | Turbocharger | |
| CN103534460A (en) | Bearing device for turbocharger | |
| CN104975941A (en) | Turbocharger bearing housing oil groove | |
| CN205101283U (en) | Turbo charger's compressor end seal structure , turbo charger and car | |
| CN211117111U (en) | Floating bearing of turbocharger | |
| BRPI0617523A2 (en) | rotor for one rotary machine and one rotary machine | |
| JP6704107B2 (en) | Thrust collar and thrust bearing device | |
| KR20170044750A (en) | Supercharger and engine with same | |
| CN109736951B (en) | Bearing lubricating and sealing system of rotor system of micro gas turbine | |
| JP2010127240A (en) | Fitting structure of impeller | |
| CN110425404A (en) | A kind of lubrication system of new-energy automobile power motor bearing | |
| EP3698060B1 (en) | A turbo bearing system | |
| CN104373155A (en) | Cylindrical impeller type power device | |
| JP2011012570A (en) | Thrust bearing structure and turbocharger | |
| JP6865604B2 (en) | Centrifugal compressor and exhaust turbine supercharger | |
| CN218934799U (en) | High-sealing type compressor shaft sleeve of turbocharger | |
| US1089770A (en) | Centrifugal pump. | |
| CN103291753B (en) | A kind of floating bearing and internal combustion engine turbocharger | |
| CN210531165U (en) | Multistage pump with pump shaft unloading device | |
| CN114526129B (en) | Turbocharger with shaft assembly | |
| CN213511271U (en) | Air suspension high-speed centrifugal compressor | |
| CN104100565B (en) | Water pump complement for Diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240319 Address after: 315100 No. 188, Jingu Middle Road (West), Yinzhou District, Ningbo City, Zhejiang Province Patentee after: BORGWARNER AUTOMOTIVE COMPONENTS (NINGBO) Co.,Ltd. Country or region after: Zhong Guo Address before: No. 88 Qingdao East Road, New Area, Taicang Port Economic and Technological Development Zone, Taicang City, Suzhou City, Jiangsu Province 215400 Patentee before: BORGWARNER AUTOMOTIVE COMPONENTS (JIANGSU) CO.,LTD. Country or region before: Zhong Guo |