CN212105977U

CN212105977U - Turbocharger with improved oil way structure

Info

Publication number: CN212105977U
Application number: CN202020592990.3U
Authority: CN
Inventors: 李亚静; 毕金光; 刘湘; 蒋华锋; 王群
Original assignee: NINGBO WEIFU TIANLI TURBOCHARGING TECHNOLOGY CO LTD
Current assignee: NINGBO WEIFU TIANLI TURBOCHARGING TECHNOLOGY CO LTD
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-12-08
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a turbo charger with improved generation oil circuit structure, includes the casing and assembles the pivot in the casing, the both ends of pivot are equipped with impeller and turbine respectively, be equipped with the floating bearing in the pivot, be equipped with oil inlet and oil-out on the casing, wherein, the position towards the oil inlet on the floating bearing is equipped with first oilhole, the position towards the oil-out on the floating bearing is equipped with the second oilhole. In this application, lubricating oil enters into the casing through the oil inlet after, during the most direct floating bearing that flows in through first oilhole, then: a part of lubricating oil enters a gap between the floating bearing and the rotating shaft and then flows into an oil cavity through the gap, and the oil cavity is a first oil way; the other part of the lubricating oil enters a gap between the floating bearing and the shell through the second oil hole and then flows into the oil cavity through the gap, and the gap is a second oil path. Two oil circuits make the flow of the lubricating oil more convenient and faster, and the lubricating effect is good.

Description

Turbocharger with improved oil way structure

Technical Field

The utility model belongs to the technical field of turbo charger, concretely relates to turbo charger with improved generation oil circuit structure.

Background

With the development of economy, automobiles are more and more popular, and the quantity of automobiles owned by everyone is gradually increased. At present, in order to reduce the oil consumption of an automobile and improve the dynamic property of the automobile, a turbocharger is generally adopted to improve the power of an engine, and the turbocharging technology utilizes the exhaust energy after the combustion of the engine to do work to push a turbine to rotate at a high speed so as to compress fresh air, so that the air inflow is increased, and the dynamic property of the engine is improved.

The turbocharger belongs to a typical rotating machine, two ends of the same rotating shaft are connected with a turbine and an impeller, the turbine uses the energy of exhaust gas exhausted by an engine to do work through expansion, the impeller is driven to compress more fresh air to be supplied to the engine, and the dynamic property and the economical efficiency of the engine are improved.

The turbocharger generally includes a housing, a rotating shaft, a turbine, an impeller, a floating bearing, a shaft seal, an end cover, and the like, wherein the floating bearing and the shaft seal are sleeved on the rotating shaft and are in clearance fit with the rotating shaft. An oil inlet and an oil outlet are formed in the shell, lubricating oil flows into a gap position between the assemblies after entering the supercharger from the oil inlet to play a role in lubrication and oil pressure floating support, and finally the lubricating oil flows into the oil cavity and is discharged through the oil outlet. In the oil path structure, lubricating oil generally has only one oil path, so that the lubricating oil cannot be quickly filled in gaps when the engine is started, and a certain time is needed.

Therefore, based on the above problems, the present invention has been made to further study and improve the existing turbocharger structure.

SUMMERY OF THE UTILITY MODEL

To not enough among the above prior art, the utility model provides a turbo charger with improved generation oil circuit structure has two way oil road ways, makes the lubricating oil flow faster.

In order to solve the above technical problem, the present invention solves the above technical problems.

The utility model provides a turbo charger with improved generation oil circuit structure, includes the casing and assembles the pivot in the casing, the both ends of pivot are equipped with impeller and turbine respectively, be equipped with the floating bearing in the pivot, be equipped with oil inlet and oil-out on the casing, wherein, the position towards the oil inlet on the floating bearing is equipped with first oilhole, the position towards the oil-out on the floating bearing is equipped with the second oilhole.

In the turbocharger in the prior art, after lubricating oil enters a shell, the lubricating oil flows into the gap position between each component to play the functions of lubrication and oil pressure floating support, and the oil way is single. In this application, lubricating oil enters into the casing through the oil inlet after, during the most direct floating bearing that flows in through first oilhole, then: a part of lubricating oil enters a gap between the floating bearing and the rotating shaft and then flows into an oil cavity through the gap, and the oil cavity is a first oil way; the other part of the lubricating oil enters a gap between the floating bearing and the shell through the second oil hole and then flows into the oil cavity through the gap, and the gap is a second oil path. Two oil circuits make the flow of the lubricating oil more convenient and faster, and the lubricating effect is good.

In a preferred embodiment, the oil inlet is provided with a positioning pin through which oil can be introduced, and one end of the positioning pin is inserted into the first oil hole. In the structure, the positioning pin does not influence the lubricating oil to enter the supercharger, and simultaneously the positioning pin also has a positioning function.

In a preferred embodiment, the floating bearing and the shell are positioned through the positioning pin, the structure is more simplified, the assembly is convenient, meanwhile, the positioning action point of the positioning pin and the floating bearing is approximately in the middle of the floating bearing, so that the positioning stress is more balanced, and the coaxiality of the floating bearing and the rotating shaft is high during the operation. In the existing structure, the positioning is carried out through the positioning lug boss at the end part of the floating bearing, and the phenomenon of unbalanced stress exists.

In a preferred embodiment, the positioning pin is a hollow tubular structure for oil feeding.

In a preferred embodiment, a shaft seal is arranged on the rotating shaft, and an end cover is arranged outside the shaft seal.

Compared with the prior art, the utility model discloses following beneficial effect has: the turbocharger with the improved oil circuit structure is provided with two oil circuit channels, so that lubricating oil flows faster, meanwhile, the whole structure is more compact through the change of the positioning structure of the floating bearing, the positioning stress of the floating bearing is more stable, the deviation is small, the rotating precision of the rotating shaft is high, and the dynamic balance of a rotor is improved.

Drawings

Fig. 1 is a schematic view of a turbocharger according to the present invention.

Fig. 2 is a schematic diagram of a turbocharger according to the present invention.

Fig. 3 is a third schematic diagram of a turbocharger according to the present invention.

Fig. 4 is a cross-sectional view of a turbocharger of the present invention.

Fig. 5 is an enlarged view of the area a in fig. 4.

Fig. 6 is a perspective view of the turbocharger with the housing structure omitted.

Fig. 7 is a schematic view of a floating bearing according to the present invention.

Fig. 8 is a perspective view of the floating bearing and the positioning pin of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it should be understood that the term: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the drawing shows, just for the convenience of description the utility model discloses and simplified description, consequently can not be understood as the restriction of the utility model. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 2 to 8, the utility model provides a turbo charger with improved generation oil circuit structure, including casing 1 and the pivot 2 of assembly in casing 1, the both ends of pivot 2 are equipped with impeller and turbine respectively, be equipped with floating bearing 23 on the pivot 2, be equipped with oil inlet 11 and oil-out 12 on the casing 1, wherein, the position towards oil inlet 11 is equipped with first oilhole 233 on floating bearing 23, the position towards oil-out 12 is equipped with second oilhole 234 on floating bearing 23. The rotating shaft 2 is provided with a shaft seal 21, and an end cover 22 is arranged outside the shaft seal 21.

Specifically, in the embodiment of the present application, the oil inlet 11 is provided with a positioning pin 15, which can take oil, for example, may be a hollow tubular structure, for taking oil, and one end of the positioning pin 15 is inserted into the first oil hole 233. In this structure, the positioning pin 15 does not affect the entry of lubricating oil into the supercharger, and the positioning pin 15 also performs a positioning function. Correspondingly, the floating bearing 23 and the shell 1 are positioned through the positioning pin 15, the structure is more simplified, the assembly is convenient, meanwhile, the positioning action points of the positioning pin 15 and the floating bearing 23 are approximately in the middle of the floating bearing 23, so that the positioning stress is more balanced, and the coaxiality of the floating bearing 23 and the rotating shaft 2 is high during the operation. In the existing structure, the positioning is carried out through the positioning lug boss at the end part of the floating bearing 23, and the phenomenon of unbalanced stress exists.

In this application, after the lubricating oil enters the housing 1 through the oil inlet 11, most of the lubricating oil directly flows into the floating bearing 23 through the first oil hole 233, and then: a part of lubricating oil enters a clearance between the floating bearing 23 and the rotating shaft 2 and then flows into an oil cavity through the clearance, and the oil cavity is a first oil path; the other part of the lubricating oil enters the gap between the floating bearing 23 and the housing 1 through the second oil hole 234, and then flows into the oil chamber through the gap, which is a second oil passage. The two oil paths enable the lubricating oil to flow more conveniently and quickly, and the lubricating effect is good, and the oil paths are shown by dotted lines in figure 5.

More than, the utility model provides a turbo charger with improved generation oil circuit structure has two way oil circuit ways, makes the lubricating oil flow faster, and through the change to floating bearing location structure, it is compacter to make overall structure simultaneously, makes floating bearing's location atress more stable, and the deviation is little, and pivot rotation accuracy is high, has improved rotor dynamic balance.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. The utility model provides a turbo charger with improved generation oil circuit structure, includes casing (1) and pivot (2) of assembly in casing (1), the both ends of pivot (2) are equipped with impeller and turbine respectively, be equipped with floating bearing (23) on pivot (2), be equipped with oil inlet (11) and oil-out (12) on casing (1), its characterized in that, the position towards oil inlet (11) is equipped with first oilhole (233) on floating bearing (23), the position towards oil-out (12) is equipped with second oilhole (234) on floating bearing (23).

2. The turbocharger with the improved oil passage structure according to claim 1, wherein the oil inlet (11) is provided with a positioning pin (15) into which oil can be fed, and one end of the positioning pin (15) is inserted into the first oil hole (233).

3. The turbocharger with the improved oil circuit structure according to claim 1, characterized in that the positioning between the floating bearing (23) and the housing (1) is realized by a positioning pin (15).

4. The turbocharger with the improved oil passage structure according to claim 2 or 3, wherein the positioning pin (15) is a hollow tubular structure.

5. The turbocharger with the improved oil circuit structure according to claim 1, wherein a shaft seal (21) is arranged on the rotating shaft (2), and an end cover (22) is arranged outside the shaft seal (21).