CN113374739B - Method for machining radial bearing mounting hole and air cycle machine - Google Patents
Method for machining radial bearing mounting hole and air cycle machine Download PDFInfo
- Publication number
- CN113374739B CN113374739B CN202110707711.2A CN202110707711A CN113374739B CN 113374739 B CN113374739 B CN 113374739B CN 202110707711 A CN202110707711 A CN 202110707711A CN 113374739 B CN113374739 B CN 113374739B
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- mounting
- mounting seat
- machining
- aperture
- 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
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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
-
- 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
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
Abstract
The application provides a processing method of a radial bearing mounting hole and an air cycle machine, comprising the following steps: processing a first mounting seat and a second mounting seat; a first mounting hole is formed in the first mounting seat, a second mounting hole is formed in the second mounting seat, and the aperture of the first mounting hole and the aperture of the second mounting hole are smaller than a preset aperture; assembling the first mounting seat and the second mounting seat according to a working state; simultaneously extending the same machining tool into the first mounting hole and the second mounting hole, and synchronously expanding the aperture of the first mounting hole and the aperture of the second mounting hole to a preset aperture. The application provides a processing method of radial bearing mounting holes and an air cycle machine, which can enable the mounting holes to have good coaxiality, so that the good coaxiality between the bearings is ensured, and the working reliability of a rotor system is further ensured.
Description
Technical Field
The application belongs to the technical field of air conditioning, and particularly relates to a machining method of a radial bearing mounting hole and an air circulator.
Background
A rotor system assembly of an air cycle machine is supported by at least two radial bearings, the rotor system being in high speed rotational movement relative to the radial bearings. The operation condition of the rotor system is directly influenced by the level of the assembly precision control of the radial bearings, the coaxiality between the radial bearings is a key factor influencing the precision control level, and a set of mounting hole machining method capable of ensuring better coaxiality does not exist in the prior art, so that the coaxiality between the mounting holes is larger, and the working reliability of the rotor system is influenced.
Disclosure of Invention
Therefore, an object of the present invention is to provide a method for processing radial bearing mounting holes and an air cycle machine, which can ensure good coaxiality between the mounting holes, thereby ensuring good coaxiality between the bearings, and further ensuring operational reliability of a rotor system.
In order to solve the above problem, the present application provides a method for machining a radial bearing mounting hole, including: processing a first mounting seat and a second mounting seat; a first mounting hole is formed in the first mounting seat, a second mounting hole is formed in the second mounting seat, and the aperture of the first mounting hole and the aperture of the second mounting hole are smaller than a preset aperture; assembling the first mounting seat and the second mounting seat according to a working state; and simultaneously extending the same machining cutter into the first mounting hole and the second mounting hole, and synchronously expanding the aperture of the first mounting hole and the aperture of the second mounting hole to a preset aperture.
Optionally, the coaxiality of the first mounting hole and the second mounting hole is z, the preset aperture is D, and z/D is less than or equal to 0.001.
Optionally, a distance between a plane of the opening of the first mounting hole far away from the second mounting seat and a plane of the opening of the second mounting hole far away from the first mounting seat is L, the preset aperture is D, and L/D is less than or equal to 6.
Optionally, the air cycle machine further comprises a compressor housing;
assembling the first mounting seat and the second mounting seat according to a working state comprises:
the first mounting block is mounted to a first side of the compressor housing and the second mounting block is mounted to a second side of the compressor housing.
Optionally, a first annular protrusion is processed on the first mounting seat, a first connection groove is processed on the first side of the compressor housing, the first annular protrusion is assembled into the first connection groove, the outer diameter length of the first annular protrusion is processed to d1, and the length of the first annular protrusion extending into the first connection groove is processed to w1, where w1/d1= 0.3-1.0.
Optionally, the first connecting groove and the first annular protrusion are processed, so that the inner diameter of the first connecting groove is 0.01mm to 0.05mm larger than the outer diameter of the first annular protrusion.
Optionally, a second annular protrusion is processed on the second side of the compressor housing, a second connecting groove is processed on the second mounting seat, the second annular protrusion is assembled into the second connecting groove, the outer diameter length of the second annular protrusion is processed to be d2, and the length of the second annular protrusion extending into the second connecting groove is processed to be w2, where w2/d2= 0.3-1.0.
Optionally, a first section and a second section are machined in the second connecting groove, the second annular bulge passes through the second section and is assembled into the first section, the length of the inner diameter of the first section is machined to be d3, and the length of the first section along the central axis of the first section is machined to be w3, wherein w3/d3= 0.3-1.0.
Alternatively, d2/=2200 to 8800.
In another aspect of the present application, an air cycle machine is provided, which includes a first mounting seat on which a first mounting hole is machined by the machining method as described above, and a second mounting seat on which a second mounting hole is machined by the machining method as described above.
Optionally, a first radial bearing is disposed in the first mounting hole, and a second bearing is disposed in the second mounting hole.
Optionally, the first radial bearing is fixed in the first mounting hole through a bolt, and the second bearing is fixed in the second mounting hole through a bolt.
Advantageous effects
According to the processing method of the radial bearing mounting holes and the air cycle machine, good coaxiality can be achieved among the mounting holes, so that good coaxiality among the bearings is guaranteed, and working reliability of a rotor system is further guaranteed.
Drawings
FIG. 1 is an exploded view of an air cycle machine of an embodiment of the present application without first and second radial bearings;
FIG. 2 is a cross-sectional view of a second mount of an embodiment of the present application;
FIG. 3 is a cross-sectional view of an air cycle machine of an embodiment of the present application without first and second radial bearings;
FIG. 4 is an exploded view of an air cycle machine including a first radial bearing and a second bearing according to an embodiment of the present application.
The reference numerals are represented as:
1. a first mounting seat; 11. a first mounting hole; 12. a first annular projection; 13. mounting grooves; 2. a second mounting seat; 21. a second mounting hole; 22. a second connecting groove; 221. a first stage; 222. a second stage; 3. a compressor housing; 31. a first connecting groove; 32. a second annular projection; 41. a first radial bearing; 42. a second bearing.
Detailed Description
Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, a method for machining a radial bearing mounting hole includes: processing a first mounting seat 1 and a second mounting seat 2; a first mounting hole 11 is formed in the first mounting seat 1, a second mounting hole 21 is formed in the second mounting seat 2, and the aperture of the first mounting hole 11 and the aperture of the second mounting hole 21 are smaller than a preset aperture; assembling the first mounting seat 1 and the second mounting seat 2 according to a working state; stretch into first mounting hole 11 and second mounting hole 21 with same processing cutter simultaneously in, enlarge the aperture of first mounting hole 11 and the aperture of second mounting hole 21 to predetermineeing the aperture in step, through the aperture of enlarging first mounting hole 11 and second mounting hole 21 simultaneously, can readjust the axiality of first mounting hole 11 and second mounting hole 21, reduce the problem that the axiality is bigger than normal between the mounting hole that assembly error stack brought, can realize improving the axiality of first mounting hole 11 and second mounting hole 21, and then control the axiality of radial bearing assembly effectively, the operational reliability of high-speed rotor has been improved.
Further, before the first mounting base 1 and the second mounting base 2 are assembled according to the working state, the first mounting base 1 and the second mounting base 2 are separated and are not connected.
Further, before the first mounting seat 1 and the second mounting seat 2 are assembled, the first mounting hole 11 may be formed during the manufacture of the first mounting seat 1 or before the assembly, and the second mounting hole 21 may be formed during the manufacture of the second mounting seat 2 or before the assembly.
Furthermore, the first mounting base 1 is a bearing base, and the second mounting base 2 is a fan base.
Further, when expanding the aperture of first mounting hole 11 and the aperture of second mounting hole 21 to predetermineeing the aperture, get rid of the material through honing machining, accomplish reaming operation, air cycle machine still includes the expander, and the one end that first mounting seat 1 was kept away from to second mounting seat 2 is provided with mounting groove 13, and mounting groove 13 is used for connecting the expander to mounting groove 13 enlarges the aperture of first mounting hole 11 and the aperture of second mounting hole 21 to predetermineeing the aperture as the benchmark.
The coaxiality of the first mounting hole 11 and the second mounting hole 21 is z, the preset aperture is D, and the z/D is less than or equal to 0.001, so that the coaxiality of the first mounting hole 11 and the second mounting hole 21 can be ensured to be within an ideal range, the coaxiality of radial bearing assembly is effectively controlled, and the working reliability of the high-speed rotor is improved.
The distance between the plane of the opening far away from the second mounting seat 2 in the first mounting hole 11 and the plane of the opening far away from the first mounting seat 1 in the second mounting hole 21 is L, the preset aperture is D, and L/D is less than or equal to 6, so that the coaxiality of the first mounting hole 11 and the second mounting hole 21 can be effectively controlled after the apertures of the first mounting hole 11 and the second mounting hole 21 are enlarged.
Further, the plane of the opening of the first mounting hole 11 is parallel to the plane of the opening of the second mounting hole 21.
Further, a distance between a plane where the opening of the first mounting hole 11 is located and a plane where the opening of the second mounting hole 21 is located, that is, a shortest distance between an end surface of the first mounting hole 11 and an end surface of the second mounting hole 21.
The air cycle machine also includes a compressor housing 3; assembling the first mounting base 1 and the second mounting base 2 according to the working state comprises: assemble first mount pad 1 to compressor housing 3 on the first side, assemble second mount pad 2 to compressor housing 3's second side on, through setting up compressor housing 3, when realizing providing the mounted position for other parts of compressor, also can guarantee the firm assembly of first mount pad 1 and second mount pad 2.
Further, the first side and the second side are two opposite sides of the compressor housing 3, as shown in fig. 1, the first side is a left side, and the second side is a right side.
Processing first annular protrusion 12 on first mount pad 1, processing first connecting groove 31 on compressor housing 3's first side, assemble first annular protrusion 12 to first connecting groove 31 in, the external diameter length processing of first annular protrusion 12 is d1, the length processing that stretches into first connecting groove 31 with first annular protrusion 12 is w1, w1/d1=0.3 ~ 1.0, when guaranteeing that first mount pad 1 can be connected with compressor housing 3 is stable, improve the precision of assembly, reduce the error, and then improve the axiality of first mounting hole 11 and second mounting hole 21, the too big assembly difficulty of w1/d1 value, the positioning effect is not good if w1/d1 value is the undersize.
Further, the first annular projection 12 is provided with reference to the mounting groove 13.
Further, the first annular protrusion 12 is a circular annular protrusion structure and extends in the axial direction.
The first connecting groove 31 and the first annular bulge 12 are processed, so that the inner diameter of the first connecting groove 31 is 0.01-0.05 mm larger than the outer diameter of the first annular bulge 12, stable connection between the first mounting seat 1 and the compressor shell 3 is further guaranteed, assembly precision is improved, and errors are reduced.
Further, compressor housing 3 is provided with first casing flange face, and first mount pad 1 is provided with first flange face, first casing flange face and the assembly of first flange face laminating, and first annular bulge 12 begins the annular bulge structure of first flange face to outwards outstanding along the axial, first flange face can also play the effect of backstop, and it is spacing to form in the direction that first annular bulge 12 got into first connecting groove 31, prevents that first mount pad 1 from excessively getting into. Threaded holes are formed in the circumferential direction of the first shell flange face, the first flange face is correspondingly provided with the threaded holes, and the first shell flange face and the first flange face are fastened together through penetrating bolts.
Processing second annular protrusion 32 on compressor housing 3's second side, processing second connecting groove 22 on second mount pad 2, assemble second annular protrusion 32 to second connecting groove 22 in, the external diameter length processing of second annular protrusion 32 is d2, the length processing that stretches into in second connecting groove 22 with second annular protrusion 32 is w2, w2/d2=0.3 ~ 1.0, when guaranteeing that second mount pad 2 can be connected with compressor housing 3 is stable, improve the precision of assembly, reduce the error, and then improve the axiality of first mounting hole 11 and second mounting hole 21.
Further, a second annular projection 32 is provided with reference to the first coupling groove 31.
Further, the second annular protrusion 32 is also substantially annular, and the second annular protrusion 32 extends in a radial direction.
The first section 221 and the second section 222 are machined in the second connecting groove 22, the second annular bulge 32 penetrates through the second section 222 to be assembled into the first section 221, the length of the inner diameter of the first section 221 is machined to be d3, the length of the first section 221 along the central axis of the first section 221 is machined to be w3, and w3/d3= 0.3-1.0, so that the stable assembly of the second connecting groove 22 and the second annular bulge 32 is guaranteed, errors are effectively reduced, and the assembly precision is guaranteed.
Further, the first section 221 and the second section 222 are coaxially disposed and are both cylindrical, and the diameter of the second section 222 is larger than that of the first section 221.
d2/d3-d2= 2200-8800, and further ensures the stable assembly of the second connecting groove 22 and the second annular bulge 32, effectively reduces errors, and ensures the assembly precision.
Further, be provided with second casing flange face on compressor housing 3, set up second flange face on second mount pad 2, the effect of backstop can also be played to the second flange face, and it is spacing to form in the direction that second annular bulge 32 got into second spread groove 22, prevents that second mount pad 2 from excessively getting into. And the second shell flange surface is provided with a threaded hole correspondingly, and the second shell flange surface and the second flange surface are fastened together through penetrating bolts.
In another aspect of the present embodiment, an air cycle machine is provided, which includes a first mounting base 1 and a second mounting base 2, wherein the first mounting base 1 is provided with a first mounting hole 11 processed by the processing method, and the second mounting base 2 is provided with a second mounting hole 21 processed by the processing method.
Further, the air cycle machine includes a rotor system, the radial direction of which is supported by a first radial bearing 41 and a second radial bearing.
Further, a first radial bearing 41 is provided in the first mounting hole 11, and a second bearing 42 is provided in the second mounting hole 21.
The first radial bearing 41 is fixed in the first mounting hole 11 through a bolt, and the second bearing 42 is fixed in the second mounting hole 21 through a bolt, so that the first radial bearing 41 and the second radial bearing are prevented from being separated, and the assembly stability is ensured.
Further, the outer cylindrical surface of the first radial bearing 41 is fitted into the shaft hole of the first mounting hole 11, and the first radial bearing 41 is fixed on the first mounting seat 1 by bolts. The outer cylindrical surface of the second radial bearing is matched and assembled with the shaft hole of the second mounting hole 21, the second radial bearing is fixed on the second mounting seat 2 through a bolt, and the coaxiality of the first mounting hole 11 and the second mounting hole 21 can be effectively controlled, so that the coaxiality of the first radial bearing 41 and the second radial bearing is controlled.
The processing method of the radial bearing mounting hole and the air cycle machine provided by the embodiment of the invention can ensure good coaxiality between the bearings, thereby ensuring the working reliability of a rotor system.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (8)
1. A method for machining a radial bearing mounting hole is characterized by comprising the following steps:
processing a first mounting seat (1) and a second mounting seat (2), wherein the first mounting seat (1) is a bearing seat, and the second mounting seat (2) is a fan seat;
a first mounting hole (11) is formed in the first mounting seat (1), a second mounting hole (21) is formed in the second mounting seat (2), and the aperture of the first mounting hole (11) and the aperture of the second mounting hole (21) are smaller than a preset aperture;
assembling the first mounting seat (1) and the second mounting seat (2) according to a working state;
simultaneously extending the same machining tool into the first mounting hole (11) and the second mounting hole (21), and synchronously expanding the aperture of the first mounting hole (11) and the aperture of the second mounting hole (21) to a preset aperture;
further comprising a compressor housing (3);
assembling the first mounting seat (1) and the second mounting seat (2) according to a working state comprises the following steps:
-fitting the first mounting seat (1) to a first side of the compressor housing (3), -fitting the second mounting seat (2) to a second side of the compressor housing (3);
machining a second annular bulge (32) on a second side of the compressor shell (3), machining a second connecting groove (22) on the second mounting seat (2), assembling the second annular bulge (32) into the second connecting groove (22), machining the length of the outer diameter of the second annular bulge (32) into d2, and machining the length of the second annular bulge (32) extending into the second connecting groove (22) into w2, wherein w2/d2= 0.3-1.0;
machining a first section (221) and a second section (222) in the second connecting groove (22), assembling the second annular bulge (32) into the first section (221) through the second section (222), machining the inner diameter length of the first section (221) to be d3, and machining the length of the first section (221) along the central axis of the first section (221) to be w3, wherein w3/d3= 0.3-1.0;
d2/(d3-d2)＝2200～8800。
2. the machining method according to claim 1, wherein the coaxiality of the first mounting hole (11) and the second mounting hole (21) is z, the preset hole diameter is D, and z/D is less than or equal to 0.001.
3. The machining method according to claim 1, characterized in that a distance between a plane of an opening of the first mounting hole (11) far away from the second mounting seat (2) and a plane of an opening of the second mounting hole (21) far away from the first mounting seat (1) is L, the preset hole diameter is D, and L/D is less than or equal to 6.
4. The machining method according to claim 1, characterized in that a first annular protrusion (12) is machined on the first mounting seat (1), a first connecting groove (31) is machined on a first side of the compressor housing (3), the first annular protrusion (12) is fitted into the first connecting groove (31), an outer diameter length of the first annular protrusion (12) is machined to d1, and a length of the first annular protrusion (12) protruding into the first connecting groove (31) is machined to w1, w1/d1= 0.3-1.0.
5. The machining method according to claim 4, characterized in that the first connection groove (31) and the first annular protrusion (12) are machined such that the inner diameter of the first connection groove (31) is 0.01mm to 0.05mm larger than the outer diameter of the first annular protrusion (12).
6. An air cycle machine, characterized by comprising a first mounting seat (1) and a second mounting seat (2), wherein the first mounting seat (1) is provided with a first mounting hole (11) processed by the processing method according to any one of claims 1-5, and the second mounting seat (2) is provided with a second mounting hole (21) processed by the processing method according to any one of claims 1-5.
7. The air cycle machine of claim 6, wherein a first radial bearing (41) is disposed within the first mounting hole (11) and a second bearing (42) is disposed within the second mounting hole (21).
8. The air cycle machine of claim 7, wherein the first radial bearing (41) is bolted into the first mounting hole (11) and the second bearing (42) is bolted into the second mounting hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707711.2A CN113374739B (en) | 2021-06-24 | 2021-06-24 | Method for machining radial bearing mounting hole and air cycle machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707711.2A CN113374739B (en) | 2021-06-24 | 2021-06-24 | Method for machining radial bearing mounting hole and air cycle machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113374739A CN113374739A (en) | 2021-09-10 |
| CN113374739B true CN113374739B (en) | 2023-04-18 |
Family
ID=77579042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110707711.2A Active CN113374739B (en) | 2021-06-24 | 2021-06-24 | Method for machining radial bearing mounting hole and air cycle machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113374739B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI792804B (en) * | 2021-12-23 | 2023-02-11 | 豪力輝工業股份有限公司 | Drive shaft bearing seat mounting device |
| CN114952284A (en) * | 2022-06-29 | 2022-08-30 | 中航力源液压股份有限公司 | Processing method for improving motion stability of high-speed heavy-load axial plunger pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2323066C2 (en) * | 2006-03-10 | 2008-04-27 | Коротков Борис Иванович | Ring blanks with two coaxial different-orientation cone openings working method and apparatus for boring |
| CN103372666B (en) * | 2012-04-26 | 2015-05-13 | 昆山江锦机械有限公司 | Processing method and concentricity measuring tool for coaxial hole of diesel engine oil supply unit casing |
| CN203292515U (en) * | 2013-02-28 | 2013-11-20 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Boring cutter bar |
| CN105499627A (en) * | 2016-01-13 | 2016-04-20 | 北京海普瑞森科技发展有限公司 | Machining process of boring mill for two ends of printing roller |
| CN207777252U (en) * | 2017-12-26 | 2018-08-28 | 利欧集团浙江泵业有限公司 | Pump body component |
| CN111365287A (en) * | 2018-12-25 | 2020-07-03 | 珠海格力电器股份有限公司 | Bearing support assembly, machining method thereof and centrifugal compressor |
-
2021
- 2021-06-24 CN CN202110707711.2A patent/CN113374739B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113374739A (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113374739B (en) | Method for machining radial bearing mounting hole and air cycle machine | |
| JP5060288B2 (en) | Multi-thick film layer bearing cartridge and housing | |
| US10447104B2 (en) | Spindle structure, electric motor, and machine tool formed with through hole for passage of fluid | |
| JP2007244045A (en) | Fan motor | |
| WO2019188068A1 (en) | Thrust magnetic bearing and turbo-compressor with same | |
| KR102552016B1 (en) | Rotor assembly for motor | |
| US6412173B1 (en) | Miniature turbomolecular pump | |
| WO2020134430A1 (en) | Bearing support assembly and machining method therefor, and centrifugal compressor | |
| JP2010159858A (en) | Damper structure and rotating machine | |
| JPWO2018174103A1 (en) | Rotating body, supercharger, and manufacturing method of rotating body | |
| JPWO2018043338A1 (en) | Rotating machine | |
| JP2006194262A (en) | Pulley equipped with damper function | |
| JPH11101128A (en) | Super charger, method for assembling thereof and bearing unit used in supercharger | |
| EP3473875B1 (en) | Tilting pad journal bearing manufacturing method, tilting pad journal bearing, and compressor | |
| JPWO2016199825A1 (en) | Rotating machine | |
| CN206775283U (en) | Motor casing main body, motor casing and motor | |
| CN111365293A (en) | Compressor rotor, compressor and air conditioning equipment | |
| JP6403020B2 (en) | Touchdown bearing and rotating machine | |
| JP5174069B2 (en) | Centrifugal compressor | |
| KR102617404B1 (en) | Compressor rotor, compressor and refrigerant circulation system | |
| CN216199084U (en) | Air compressor | |
| JPH11303867A (en) | Composite hydrostatic and magnetic bearing and spindle device | |
| CN218771467U (en) | Motor rotor and compressor | |
| WO2020246281A1 (en) | Rotary electric machine | |
| KR200169600Y1 (en) | Stator of a motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |