CN113982985A - Micro-air channel bearing of air compressor for vehicle-mounted fuel cell - Google Patents
Micro-air channel bearing of air compressor for vehicle-mounted fuel cell Download PDFInfo
- Publication number
- CN113982985A CN113982985A CN202111360801.5A CN202111360801A CN113982985A CN 113982985 A CN113982985 A CN 113982985A CN 202111360801 A CN202111360801 A CN 202111360801A CN 113982985 A CN113982985 A CN 113982985A
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- micro
- rotor
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- air compressor
- bearing
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- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 238000010586 diagram Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
Images
Classifications
-
- 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
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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
Abstract
The invention discloses a micro-air channel bearing of an air compressor for a vehicle-mounted fuel cell. The micro-channel bearing is characterized in that a spring piece (2) is arranged between the outer side (1) of the stator and the inner side (3) of the stator, a plurality of micro-grooves are uniformly arranged on the surface of the inner side (3) of the stator or the surface of the outer side (4) of the rotor to form the micro-channel bearing, and the micro-grooves are independently arranged on the inner side of the stator, or arranged on the outer side of the rotor, or dug on the inner side of the stator and the outer side of the rotor simultaneously. The micro-groove can be dug on the inner side of the stator independently, can also be dug on the outer side of the rotor, and can also be dug on the inner side of the stator and the outer side of the rotor simultaneously, and the three modes can reduce the friction resistance of the rotor. Through carrying out micron order grooving on the stator and rotor surface of bearing, frictional force when reducible bearing rotor's rotation improves the efficiency of air compressor machine, promotes the power density of air compressor machine, has reached the effect that comparatively obvious frictional force reduces through simple surface grooving.
Description
Technical Field
The invention relates to the field of air compressors, in particular to a micro-air channel bearing of an air compressor for a vehicle-mounted fuel cell.
Background
In a vehicle fuel cell system, the air compressor is referred to as the "lung" of the fuel cell, and therefore, the role of the air compressor is important in a high-performance fuel cell. Due to the unique properties of the fuel cell itself, there are also specific requirements for an air compressor suitable for the fuel cell, including but not limited to small size, low noise, high efficiency, fast dynamic response speed, oil-free, etc. The reason for using oil-free is mainly that the lubricating oil causes poisoning of the fuel cell, and therefore the air compressor must be oil-free, and therefore this type of air compressor cannot use the conventional oil-lubricated bearing but only the water-lubricated bearing or the air bearing. The air bearing inevitably reduces heat generation due to its extremely low friction, and is therefore more suitable for fuel cell air compressors. In order to further reduce the friction coefficient, the invention further realizes the further reduction of the bearing friction by optimizing the surface structure of the bearing, further reduces the loss of the bearing and improves the efficiency of the whole system.
Disclosure of Invention
The technical problem is as follows: the invention aims to provide a micro-air channel bearing of an air compressor for a vehicle-mounted fuel cell, and aims to further reduce the friction coefficient of the bearing and improve the efficiency of the whole system.
The technical scheme is as follows: the invention relates to a micro-air channel bearing of an air compressor for a vehicle-mounted fuel cell, wherein a spring leaf is arranged between the outer side of a stator and the inner side of the stator, a plurality of micro-grooves are uniformly arranged on the surface of the inner side of the stator or the surface of the outer side of a rotor to form the micro-air channel bearing,
the micro-grooves are separately arranged on the inner side of the stator, or arranged on the outer side of the rotor, or dug on the inner side of the stator and the outer side of the rotor.
The micro grooves are arranged axially or circumferentially.
The axial micro-grooves and the circumferential micro-grooves are dug at equal intervals.
The microchannels are each identical.
The length, width and height of the micro-groove are micron-sized.
The length of the micro groove is one thousandth to five thousandth of the circumference of the rotor.
The cross section of the micro groove is of an asymmetric structure, and the right side of the micro groove is gentler than the left side of the micro groove.
The depth of the left side of the micro groove is between seven ten-thousandths and three thousandths of the outer radius of the rotor, and the depth of the right side of the micro groove is about five-thousandths to one thousandth of the outer radius of the rotor.
The whole micro-groove is streamline.
Has the advantages that:
1. the same micron-level groove is dug on the surface of the stator and the rotor of the whole bearing, so that the surface of the stator and the rotor is conveniently processed.
2. The stator surface, the rotor surface and the stator and rotor surface are grooved, so that the friction force of the bearing rotor is reduced when the bearing rotor rotates, and the bearing rotor can be selectively processed according to requirements.
3. The reduction of bearing friction can reduce thermal production, improves the efficiency of whole air compressor machine, promotes the power density of air compressor machine, can realize the promotion of performance with comparatively simple processing mode.
Drawings
FIG. 1 is a two-dimensional block diagram of the present invention. The inner side of the stator and the outer side of the rotor are both provided with grooves.
FIG. 2 is a two-dimensional block diagram of a single stator sub-slot. And grooving the inner side of the stator.
FIG. 3 is a two-dimensional block diagram of a single rotor sump. And (4) grooving the outer side of the rotor.
The figure shows that: stator outer 1, leaf spring 2, stator inner 3 and rotor outer 4.
Detailed Description
The invention will be further explained with reference to the drawings.
The technical scheme of the invention is as follows:
the invention relates to a micro-air channel bearing of an air compressor for a vehicle-mounted fuel cell, which mainly comprises a stator outer side 1, a spring piece 2, a stator inner side 3 and a rotor outer side 4. Hundreds of micro grooves are uniformly dug on the surface of the inner side 3 of the stator and the surface of the outer side 4 of the rotor, the grooves are dug at equal intervals in the axial direction and the circumferential direction, the dug micro grooves are identical, and the length, the width and the height of each micro groove are micron-sized. The length of each micro-groove is about one-thousandth to five-thousandth of the rotor circumference, for example: one thousandth, two thousandth, three thousandth, four thousandth and five thousandth; this microgroove is asymmetric structure, and the left side is comparatively precipitous, and the right side is comparatively gentle, and the degree of depth on the left side is about between seven ten thousandths to three thousandths of rotor outside 4 radiuses, for example: seven parts per million, nine parts per million, one thousandth, two thousandths, three thousandths; the depth of the right side is about five to one thousandth of the radius of the rotor outer side 4, for example: five parts per million, six parts per million, seven parts per million, eight parts per million and one thousandth, and the micro-grooves are streamline as a whole.
The micro-groove can be dug on the inner side 3 of the stator, the outer side 4 of the rotor or both the inner side 3 of the stator and the outer side 4 of the rotor, and the friction resistance of the rotor can be reduced by the three modes.
The stator and rotor surfaces of the whole bearing are dug with the same micron-scale grooves, and the uniformity can be used for processing the stator and rotor surfaces. Meanwhile, the stator surface, the rotor surface and the stator and rotor surface are provided with grooves which can reduce the friction force when the rotor rotates, so that the selective processing can be carried out according to the requirement. Through this kind of mode, the reduction of frictional force when can making the bearing rotate, and then reduce thermal production, improve the efficiency of whole air compressor machine simultaneously, promote the power density of air compressor machine, can realize the promotion of performance with comparatively simple processing mode.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A micro-air channel bearing of an air compressor for a vehicle-mounted fuel cell is characterized in that a spring piece (2) is arranged between the outer side (1) of a stator and the inner side (3) of the stator, and a plurality of micro-grooves are uniformly arranged on the surface of the inner side (3) of the stator or the surface of the outer side (4) of a rotor to form the micro-air channel bearing.
2. The micro-duct bearing of an air compressor for a vehicle-mounted fuel cell according to claim 1, characterized in that the micro-grooves are provided on the stator inside (3) alone, or on the rotor outside (4), or dug both on the stator inside (3) and the rotor outside (4).
3. The micro-duct bearing of an air compressor for a vehicle-mounted fuel cell according to claim 2, wherein the micro-grooves are arranged in an axial direction or a circumferential direction.
4. The micro-channel bearing of an air compressor for a vehicle fuel cell according to claim 3, wherein the axial and circumferential micro-grooves are equidistantly chamfered.
5. The micro-duct bearing of an air compressor for a vehicle fuel cell according to claim 4, wherein the micro-grooves are each identical.
6. The micro-duct bearing of an air compressor for a vehicle-mounted fuel cell according to claim 5, wherein the micro-grooves have a length, a width, and a height of a micrometer-scale dimension.
7. The micro-channel bearing of an air compressor for a vehicle-mounted fuel cell according to claim 6, wherein the length of the micro-groove is one-thousandth to five-thousandth of the circumference of the rotor.
8. The micro-duct bearing of an air compressor for a vehicle fuel cell according to claim 7, wherein the cross section of the micro-groove has an asymmetrical structure, and the right side is gentler than the left side.
9. The micro air passage bearing of an air compressor for a vehicle-mounted fuel cell according to claim 8, wherein the depth of the left side of the micro groove is between seven ten thousandths and three thousandths of the radius of the rotor outside (4), and the depth of the right side is about five ten thousandths to one thousandth of the radius of the rotor outside (4).
10. The micro-duct bearing of an air compressor for a vehicle-mounted fuel cell according to claim 9, characterized in that the micro-grooves are streamlined as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360801.5A CN113982985A (en) | 2021-11-17 | 2021-11-17 | Micro-air channel bearing of air compressor for vehicle-mounted fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360801.5A CN113982985A (en) | 2021-11-17 | 2021-11-17 | Micro-air channel bearing of air compressor for vehicle-mounted fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113982985A true CN113982985A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111360801.5A Pending CN113982985A (en) | 2021-11-17 | 2021-11-17 | Micro-air channel bearing of air compressor for vehicle-mounted fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113982985A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421216A (en) * | 1987-07-16 | 1989-01-24 | Fanuc Ltd | Pneumatic bearing electrically-driven motor |
| JPH08205459A (en) * | 1995-01-26 | 1996-08-09 | Toshiba Corp | Hydrodynamic bearing type motor and scanner motor for driving polygon mirror |
| CN102322448A (en) * | 2011-09-02 | 2012-01-18 | 西安交通大学 | Cooling structure of motor-driven high-speed centrifugal air compressor |
| CN102428279A (en) * | 2009-05-20 | 2012-04-25 | 爱德华兹有限公司 | Side-channel compressor with symmetric rotor disc which pumps in parallel |
| CN104061175A (en) * | 2014-06-24 | 2014-09-24 | 广东广顺新能源动力科技有限公司 | Air bearing compressor for fuel cell |
| CN104482049A (en) * | 2014-12-12 | 2015-04-01 | 中国航天空气动力技术研究院 | Dynamic-pressure gas bearing |
| CN106438702A (en) * | 2016-11-22 | 2017-02-22 | 江苏工大金凯高端装备制造有限公司 | Aerostatic air-floating bearing |
| CN106812798A (en) * | 2017-04-17 | 2017-06-09 | 南方科技大学 | A kind of bearing and its manufacture method |
| CN111022186A (en) * | 2019-12-25 | 2020-04-17 | 至玥腾风科技集团有限公司 | Rotor system and micro gas turbine |
| CN111237341A (en) * | 2020-03-09 | 2020-06-05 | 南京工业大学 | Gas thrust bearing with hybrid action of dynamic pressure and static pressure |
| CN112211831A (en) * | 2020-11-03 | 2021-01-12 | 潍坊翔云动力科技有限公司 | Air suspension high-speed centrifugal compressor |
| CN113056618A (en) * | 2019-07-16 | 2021-06-29 | 纽若斯有限公司 | Foil air sliding bearing |
-
2021
- 2021-11-17 CN CN202111360801.5A patent/CN113982985A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421216A (en) * | 1987-07-16 | 1989-01-24 | Fanuc Ltd | Pneumatic bearing electrically-driven motor |
| JPH08205459A (en) * | 1995-01-26 | 1996-08-09 | Toshiba Corp | Hydrodynamic bearing type motor and scanner motor for driving polygon mirror |
| CN102428279A (en) * | 2009-05-20 | 2012-04-25 | 爱德华兹有限公司 | Side-channel compressor with symmetric rotor disc which pumps in parallel |
| CN102322448A (en) * | 2011-09-02 | 2012-01-18 | 西安交通大学 | Cooling structure of motor-driven high-speed centrifugal air compressor |
| CN104061175A (en) * | 2014-06-24 | 2014-09-24 | 广东广顺新能源动力科技有限公司 | Air bearing compressor for fuel cell |
| CN104482049A (en) * | 2014-12-12 | 2015-04-01 | 中国航天空气动力技术研究院 | Dynamic-pressure gas bearing |
| CN106438702A (en) * | 2016-11-22 | 2017-02-22 | 江苏工大金凯高端装备制造有限公司 | Aerostatic air-floating bearing |
| CN106812798A (en) * | 2017-04-17 | 2017-06-09 | 南方科技大学 | A kind of bearing and its manufacture method |
| CN113056618A (en) * | 2019-07-16 | 2021-06-29 | 纽若斯有限公司 | Foil air sliding bearing |
| CN111022186A (en) * | 2019-12-25 | 2020-04-17 | 至玥腾风科技集团有限公司 | Rotor system and micro gas turbine |
| CN111237341A (en) * | 2020-03-09 | 2020-06-05 | 南京工业大学 | Gas thrust bearing with hybrid action of dynamic pressure and static pressure |
| CN112211831A (en) * | 2020-11-03 | 2021-01-12 | 潍坊翔云动力科技有限公司 | Air suspension high-speed centrifugal compressor |
Non-Patent Citations (1)
| Title |
|---|
| 王云飞: "气体润滑理论与气体轴承设计", 1 February 1999, 机械工业出版社, pages: 460 * |
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