CN106089791B - Automobile purification pump module supported by foil dynamic pressure air bearing - Google Patents
Automobile purification pump module supported by foil dynamic pressure air bearing Download PDFInfo
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- CN106089791B CN106089791B CN201610647954.0A CN201610647954A CN106089791B CN 106089791 B CN106089791 B CN 106089791B CN 201610647954 A CN201610647954 A CN 201610647954A CN 106089791 B CN106089791 B CN 106089791B
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- Prior art keywords
- pressure air
- bearing
- air bearing
- dynamical pressure
- shaft sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/057—Bearings hydrostatic; hydrodynamic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/26—Systems consisting of a plurality of sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/08—Rigid support of bearing units; Housings, e.g. caps, covers for spindles
- F16C35/10—Rigid support of bearing units; Housings, e.g. caps, covers for spindles with sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/024—Sliding-contact bearings for exclusively rotary movement for radial load only with flexible leaves to create hydrodynamic wedge, e.g. radial foil bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/042—Sliding-contact bearings for exclusively rotary movement for axial load only with flexible leaves to create hydrodynamic wedge, e.g. axial foil bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an automobile purification pump module supported by a foil dynamical pressure air bearing, which adopts a modularized design idea to make a thrust foil dynamical pressure air bearing, a radial foil dynamical pressure air bearing, a bearing seat and a shaft sleeve into an integral module; thrust foil dynamical pressure air bearings are respectively arranged on the outer sides of the two end faces of the shaft sleeve, and radial foil dynamical pressure air bearings are arranged on the outer sides of the outer diameter cylindrical surfaces of the shaft sleeve. The modularized design is convenient to install, and is beneficial to large-batch production. The foil dynamical pressure air bearing is adopted to replace a traditional rolling bearing or an oil bearing to serve as a supporting part of the automobile purifying pump, and the foil dynamical pressure air bearing has the advantages of high rotating speed and rotation precision, low power consumption, no pollution, long service life, capability of working in a severe working environment and the like of the traditional gas bearing, and also has the advantages of good adaptability, low requirement on manufacturing and assembling precision, good impact resistance, high stability, no need of a special lubricating system, low maintenance cost and the like.
Description
Technical Field
The invention relates to an automobile clean pump bearing, in particular to an automobile clean pump module supported by a foil dynamic pressure air bearing.
Background
With rapid progress of science and technology, a small-sized rotating machine with high rotation speed and high stability is required to have a bearing as a core support member. An air purge pump is a small high-speed rotary machine driven by a motor and having an operating speed of 40000rpm to 100000rpm as a part of an automotive EVAP system (fuel tank vapor control system), and has special requirements for the rotational speed, stability, noise, service life, and the like of a bearing as a support member. Foil sheet dynamic pressure air bearing is a novel dynamic pressure air bearing, and compared with the traditional rolling bearing and oil bearing, the foil sheet dynamic pressure air bearing has the advantages of high rotating speed, low friction power consumption, wide working temperature range, impact resistance, low assembly centering requirement, long service life and the like.
The air purification pump is used as a part of an automobile EVAP system, a supporting bearing of the air purification pump can inevitably contact oil gas, if the traditional grease lubrication ball bearing is adopted, on one hand, the working temperature range of the bearing is strictly limited, and meanwhile, the oil gas can cause the deterioration of lubricating grease, the service life is reduced, and meanwhile, the problem of higher working noise can exist; if oil bearings are used, additional oil lubrication lines are required, increasing the complexity of the system. The foil dynamical pressure air bearing is used as a non-contact high-speed bearing, has the advantage of being unique in application in an automobile purifying pump, can effectively meet the working condition requirement of the automobile purifying pump, is beneficial to mass production of the purifying pump, and can effectively reduce the occupied space of the foil dynamical pressure air bearing in an automobile, and the layout scheme of the foil dynamical pressure air bearing in the automobile purifying pump is particularly important.
Existing systems that use foil hydrodynamic air bearings as bearings typically have a thrust disk structure at one end or the middle of the sleeve. After the outer diameter of the bearing seat is determined, the journal size of the radial foil dynamical pressure air bearing is obviously smaller than that of the journal of the shaft sleeve without the thrust disc, and when the dynamic unbalance amount of the impeller and the motor is large, the bearing capacity of the radial bearing cannot meet the use requirement. In addition, the radial foil dynamic pressure air bearing and the thrust foil dynamic pressure air bearing have the conflict of trade-off in performance, namely, the radial foil dynamic pressure air bearing journal is enlarged (the radial bearing performance is improved), and the inner diameter of the thrust foil dynamic pressure air bearing is inevitably enlarged (the thrust bearing performance is reduced); reducing the inner diameter of the thrust foil dynamical air bearing (improving thrust bearing performance) necessarily reduces the journal of the radial foil dynamical air bearing (reducing radial bearing performance).
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an automobile purification pump module supported by foil dynamical pressure air bearings. On one hand, the requirements of the automobile purifying pump on high rotating speed, high stability and longer service life are met, and meanwhile, the shafting structure is simplified, the production and processing cost is reduced, and the mass production is facilitated.
The patent refers to the field of 'pumps specially adapted for liquids'.
The automobile purification pump module comprises a thrust foil dynamical pressure air bearing, a radial foil dynamical pressure air bearing, a left bearing seat, a right bearing seat and a shaft sleeve; the shaft sleeve is positioned in a cavity formed by the left bearing seat and the right bearing seat. The thrust disc structure is omitted on the shaft sleeve; thrust foil dynamic pressure air bearings are respectively arranged on the outer sides of the two end faces of the shaft sleeve to provide axial bearing capacity; and a radial foil dynamical pressure air bearing is arranged on the outer side of the outer diameter cylindrical surface of the shaft sleeve to provide radial bearing capacity. The outer diameter cylindrical surface of the shaft sleeve is used as the working surface of the radial foil dynamical pressure air bearing, and two end surfaces of the shaft sleeve are used as the working surfaces of the thrust foil dynamical pressure air bearing.
In the technical scheme, the thrust foil dynamical pressure air bearing and the radial foil dynamical pressure air bearing are used in a combined mode, axial and radial bearing capacity is provided for the automobile purifying pump, and the influence of dynamic unbalance acting force of impellers at two ends of the mandrel and the motor during high-speed operation can be overcome.
Thrust foil dynamic pressure air bearings are respectively fixed on the inner walls of the left bearing seat and the right bearing seat; the radial foil dynamical pressure air bearing is fixed on the inner wall of the bearing seat opposite to the outer diameter cylindrical surface of the shaft sleeve.
The left bearing seat and the right bearing seat are connected through a spigot and are in interference fit.
Furthermore, in the above technical scheme, a mandrel can be arranged on the shaft sleeve, and when the purification pump works, the mandrel drives the shaft sleeve to rotate at a high speed.
Furthermore, in the above technical solution, the left bearing seat and the right bearing seat may be disposed in the housing.
Further, in the above technical scheme, an impeller and a motor may be respectively disposed at two ends of the spindle.
In the technical scheme, the thrust disc structure is omitted from the shaft sleeve, two end faces of the shaft sleeve are used as working surfaces of the thrust foil dynamical pressure air bearing, and the outer diameter cylindrical surface of the shaft sleeve is used as the working surface of the radial foil dynamical pressure air bearing, so that the bearing capacity of the module is improved.
The invention has the advantages of
1. The foil dynamical pressure air bearing is adopted to replace a traditional rolling bearing or an oil bearing to serve as a supporting part of the automobile purifying pump, and the foil dynamical pressure air bearing has the advantages of high rotating speed and rotation precision, low power consumption, no pollution, long service life, capability of working in a severe working environment and the like of the traditional gas bearing, and also has the advantages of good adaptability, low requirement on manufacturing and assembling precision, good impact resistance, high stability, no need of a special lubricating system, low maintenance cost and the like.
2. The thrust foil dynamical pressure air bearing, the radial foil dynamical pressure air bearing, the shaft sleeve and the bearing seat are made into an integral module by adopting a modular design idea, so that the assembly problem of the foil dynamical pressure air bearing is solved, the installation is convenient, and the mass production is facilitated.
3. The automobile purifying pump module eliminates a thrust disc structure in the traditional gas bearing design, and two end surfaces of the shaft sleeve are used as thrust surfaces, so that the shaft sleeve structure is simplified, and the production cost is reduced; the size of the radial foil dynamic pressure air bearing is increased in a limited space, the bearing capacity of the module is improved, and the high-speed stable operation of the whole rotor is facilitated.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
Fig. 2 is a partially enlarged view of a portion a of the cross-sectional structure of the present invention.
In the figure: 1 thrust foil dynamic pressure air bearing; 2, radial foil dynamic pressure air bearing; 3, a left bearing seat; 4, a right bearing seat; 5, shaft sleeve; 6, a shell; 7, a mandrel; 8, an impeller; 9 motor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the automobile purification pump module comprises a thrust foil hydrodynamic air bearing 1, a radial foil hydrodynamic air bearing 2, a left bearing seat 3, a right bearing seat 4 and a shaft sleeve 5, wherein the shaft sleeve 5 is positioned in a cavity formed by the left bearing seat 3 and the right bearing seat 4.
And 1 thrust foil hydrodynamic air bearing 1 is respectively arranged between one end face of the shaft sleeve 5 and the left bearing seat 3 and between the other end face of the shaft sleeve 5 and the right bearing seat 4 to provide axial bearing capacity. 1 radial foil dynamical pressure air bearing 2 is arranged between the outer diameter cylindrical surface of the shaft sleeve 5 and the left bearing seat 3 to provide radial bearing capacity
The 2 thrust foil dynamical pressure air bearings 1 are respectively fixed on the inner walls of the left bearing seat 3 and the right bearing seat 4 in a spot welding mode; the 1 radial foil dynamical pressure air bearing 2 is fixed on the inner wall of the left bearing seat 3 opposite to the outer diameter cylindrical surface of the shaft sleeve 5 in a spot welding mode.
The left bearing seat 3 and the right bearing seat 4 are connected through a spigot and are assembled together in an interference fit mode. In the technical scheme, a thrust disc structure is omitted on the shaft sleeve 5; two end surfaces of the shaft sleeve 5 are used as working surfaces of the thrust foil dynamic pressure air bearings 1 on two sides; the outer diameter cylindrical surface of the sleeve 5 serves as the working surface of the radial foil aerodynamic air bearing 2.
Above-mentioned technical scheme adopts the modularized design thinking, makes thrust foil dynamic pressure air bearing 1 and radial foil dynamic pressure air bearing 2, left bearing frame 3, right bearing frame 4 and axle sleeve 5 into an integral module, simple to operate is favorable to large batch production.
In the above technical solution, the thrust foil dynamical pressure air bearing 1 and the radial foil dynamical pressure air bearing 2 may be further fixed by a fixing pin.
In the technical scheme, the shaft sleeve 5 can be further provided with the mandrel 7, and the mandrel 7 is assembled into the shaft sleeve 5 in an interference fit mode through a press-fitting technology; when the purifying pump works, the spindle 7 drives the spindle sleeve 5 to rotate at high speed together.
In the above technical solution, the left bearing seat 3 and the right bearing seat 4 can be arranged in the housing 6 by press fitting.
In the above technical scheme, the left bearing seat 3 and the right bearing seat 4 can also be exchanged in position.
In the technical scheme, the impeller 8 and the motor 9 can be arranged at the two ends of the mandrel 7 in an interference fit mode through a press-fitting technology.
According to the technical scheme, on one hand, a thrust disc structure in the traditional design is eliminated, two end faces of the shaft sleeve are used as thrust faces, the shaft sleeve structure is simplified, and the processing cost is reduced; on the other hand, the diameter of the radial bearing is increased in a limited space, the bearing capacity of the module is improved, and the stable operation of the whole rotor is facilitated.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides an adopt car scavenging pump module of foil dynamical pressure air bearing support, includes thrust foil dynamical pressure air bearing (1), radial foil dynamical pressure air bearing (2), left bearing frame (3), right bearing frame (4) and axle sleeve (5), axle sleeve (5) are located in the cavity that left bearing frame (3) and right bearing frame (4) formed, its characterized in that: thrust foil dynamical pressure air bearings (1) are respectively arranged on the outer sides of two end faces of the shaft sleeve (5), and radial foil dynamical pressure air bearings (2) are arranged on the outer sides of the outer diameter cylindrical surfaces of the shaft sleeve (5);
the thrust foil dynamical pressure air bearing (1) is respectively fixed on the inner walls of the left bearing seat (3) and the right bearing seat (4); the radial foil dynamical pressure air bearing (2) is fixed on the inner wall of the bearing seat opposite to the outer diameter cylindrical surface of the shaft sleeve (5);
the thrust foil hydrodynamic air bearing (1) and the radial foil hydrodynamic air bearing (2) are fixed in a spot welding or fixing pin mode.
2. The module of claim 1, wherein: the left bearing seat (3) and the right bearing seat (4) are connected through a spigot and are in interference fit.
3. The module according to any one of claims 1 to 2, wherein: and a mandrel (7) is arranged on the shaft sleeve (5).
4. The module of claim 3, wherein: the left bearing seat (3) and the right bearing seat (4) are arranged in the shell (6).
5. The module of claim 4, wherein: and an impeller (8) and a motor (9) are respectively arranged at two ends of the mandrel (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610647954.0A CN106089791B (en) | 2016-08-10 | 2016-08-10 | Automobile purification pump module supported by foil dynamic pressure air bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610647954.0A CN106089791B (en) | 2016-08-10 | 2016-08-10 | Automobile purification pump module supported by foil dynamic pressure air bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089791A CN106089791A (en) | 2016-11-09 |
| CN106089791B true CN106089791B (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610647954.0A Active CN106089791B (en) | 2016-08-10 | 2016-08-10 | Automobile purification pump module supported by foil dynamic pressure air bearing |
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Families Citing this family (7)
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| CN108757492B (en) * | 2018-06-01 | 2024-05-07 | 昆明理工大学 | Vertical centrifugal pump with air dynamic pressure bearing |
| CN109751254B (en) * | 2019-01-30 | 2021-06-25 | 青岛科技大学 | Vertical small and miniature air suspension centrifugal compressor |
| CN109707638B (en) * | 2019-01-30 | 2021-06-25 | 青岛科技大学 | Bearing and sealing integrated small and miniature centrifugal compressor |
| CN111322311A (en) * | 2020-02-27 | 2020-06-23 | 至玥腾风科技集团有限公司 | Dynamic pressure sliding vane bearing rotor system, motor and electric appliance |
| KR102289217B1 (en) * | 2021-03-31 | 2021-08-13 | 주식회사 뉴로스 | Air foil thrust bearing |
| CN113894500B (en) * | 2021-09-30 | 2023-01-03 | 西安交通大学 | Manufacturing method of patch type thrust dynamic pressure gas bearing |
| CN114635872B (en) * | 2022-04-19 | 2023-09-05 | 广东美芝制冷设备有限公司 | Fan and cleaning equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100644966B1 (en) * | 2004-10-19 | 2006-11-15 | 한국과학기술연구원 | Micro power generating device |
| CN103306995B (en) * | 2013-05-30 | 2015-08-26 | 西安交通大学 | A kind of spline tooth pull bar combined rotor high speed direct-drive compressor structure |
| CN103670672B (en) * | 2013-12-19 | 2016-03-02 | 湖南大学 | A kind of turbosupercharger |
| CN104179712B (en) * | 2014-08-20 | 2015-10-14 | 石家庄金士顿轴承科技有限公司 | A kind of air suspension centrifugal blower |
| CN104329262A (en) * | 2014-10-30 | 2015-02-04 | 江苏海天泵阀制造有限公司 | Magnetic-drive multilevel radially-splitting symmetrically-arranged self-balancing centrifugal pump |
| CN104912838A (en) * | 2015-05-19 | 2015-09-16 | 湖南大学 | Split air foil bearing easy to disassemble and air compressor with same |
| CN205918632U (en) * | 2016-08-10 | 2017-02-01 | 石家庄金士顿轴承科技有限公司 | Adopt car purification pump module of paillon foil dynamic pressure air bearing supporting |
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2016
- 2016-08-10 CN CN201610647954.0A patent/CN106089791B/en active Active
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| CN106089791A (en) | 2016-11-09 |
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Address after: 052360 South Weiyi Road, Xinji Economic Development Zone, Shijiazhuang City, Hebei Province Patentee after: Hebei Kingston Technology Co.,Ltd. Address before: 052360 south of Weiyi Road, Xinji Economic Development Zone, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG KINGSTON BEARING TECHNOLOGY Co.,Ltd. |
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Denomination of invention: An automotive purification pump module supported by foil dynamic pressure air bearings Effective date of registration: 20220729 Granted publication date: 20200121 Pledgee: Bank of China Limited by Share Ltd. Xinji branch Pledgor: Hebei Kingston Technology Co.,Ltd. Registration number: Y2022130000053 |