CN105275883B - The manufacturing method of compressor and compressor - Google Patents
The manufacturing method of compressor and compressor Download PDFInfo
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- CN105275883B CN105275883B CN201510339747.4A CN201510339747A CN105275883B CN 105275883 B CN105275883 B CN 105275883B CN 201510339747 A CN201510339747 A CN 201510339747A CN 105275883 B CN105275883 B CN 105275883B
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Abstract
The present invention provides the manufacturing method of a kind of compressor and compressor.The performance decline of compressor caused by order to inhibit the corrosion because of shell, compressor includes: compression unit shell；Impeller is rotatably freely set in compression unit shell；And diffuser, it is configured in compression unit shell, make to be reduced by the flow velocity of the gas after wheel compresses, impeller has the blade that the inner peripheral surface towards compression unit shell extends, diffuser has pan portion, the pan portion forms a part in the shroud face opposed with the external end edge of blade, and pan portion is made of the corrosion resistance material higher than the material of compression unit shell.
Description
Technical field
The present invention relates to the manufacturing methods of compressor and compressor.
Background technique
It has been known that there is the rotations by impeller in the past come the compressor of compressed gas.The following patent document 1 discloses this
An example of the compressor of sample.
Centrifugal compressor disclosed in patent document 1 includes shell and is rotatably freely set to the inner space of shell
In impeller.
Shell has with axial one end from impeller the inner peripheral surface of expanding cone cell towards another side.Impeller packet
Include multiple blades of the inner peripheral surface extension towards shell.Each blade has the external end edge opposed with the inner peripheral surface of shell.In shell
Inner peripheral surface and each blade external end edge between be formed with small gap.
The peripheral part of shell is provided with vortex chamber, is provided between the storage space and vortex chamber of impeller and is configured with expansion
Dissipate the flow path of device.The flow path configured with diffuser is passed through by compressed gas by means of the rotation of impeller and flows into vortex chamber,
And it is discharged from compressor.
Existing technical literature
Patent document 1: Japanese Patent Publication 5-12693 bulletin.
Since the shell of compressor is generally formed by casting such as cast iron or cast steels, by being wrapped in compressed object gas
Moisture contained etc. and be easy inner peripheral surface generate corrosion.In above-mentioned previous compressor, when the inner peripheral surface in shell generates corruption
When erosion, the banding clearance as the gap between the inner peripheral surface of shell and the external end edge of each blade expands, thus the property of compressor
It can decline.
Summary of the invention
The present invention is to complete in order to solve above-mentioned problem, caused by being able to suppress the corrosion because of shell
Compressor performance decline.
It in order to achieve the above object, include: shell based on compressor of the invention；Impeller is rotatably freely set to
It states in shell；And diffuser, configuration inside the housing, makes to be reduced by the flow velocity of the gas after above-mentioned wheel compresses, above-mentioned
Impeller has the blade that the inner peripheral surface towards above-mentioned shell extends, and above-mentioned diffuser has shroud forming portion, and above-mentioned shroud is formed
Portion forms at least part in the shroud face opposed with above-mentioned blade, and above-mentioned shroud forming portion is by corrosion resistance than above-mentioned shell
The high material of material is constituted.
In this composition, shroud face is formd by the shroud forming portion that the corrosion resistance material higher than the material of shell is constituted
At least part be therefore able to suppress the expansion of the banding clearance caused by the corrosion because of shell between shroud face and blade.
Therefore, it is able to suppress the performance decline of compressor.Further, it is possible to corrosion resistance is improved using the shroud forming portion of diffuser,
Thus, for example being able to suppress the increase of manufacturing cost compared with the case where forming entire shell by the high material of corrosion resistance.
In above-mentioned compressor preferably, the inner peripheral surface of above-mentioned shroud forming portion shape together with the inner peripheral surface of above-mentioned shell
At continuous above-mentioned shroud face.
According to this constitution, being capable of forming smoothly continuous shroud face using the shroud forming portion of shell and diffuser.
In above-mentioned compressor preferably, above-mentioned shell has the inner space for storing above-mentioned impeller, above-mentioned shroud shape
Above-mentioned shroud face is formed in the exit for the above-mentioned inner space that compressed above-mentioned gas is discharged at portion.
Because of the corrosion of shell, widened banding clearance is difficult to repair, but the widened shroud because of the deformation of shell
It gap can be by adjusting repairing.Therefore, according to this composition, by forming internal sky by the high shroud forming portion of corrosion resistance
Between exit shroud face so that being prevented using shroud forming portion in the outlet of inner space because being difficult to the corrosion repaired
Caused by banding clearance expansion, the reason of banding clearance capable of being expanded be limited to can easily be done adjustment because of deformation
Caused by expand.
Preferably, above-mentioned compressor includes: speed increaser, has gear and the speed increaser shell for said gear configuration,
Speedup is carried out to the rotary force of motor and is transferred to above-mentioned impeller；Case cover covers the above-mentioned speed increaser of above-mentioned inner space
The end of shell side；And gasket, it sandwiches between above-mentioned speed increaser shell and above-mentioned case cover.
According to this constitution, even if in compression unit shell, case cover and speed increaser shell caused by aging with age
Some deformation and make in the widened situation of banding clearance, can also be repaired by adjusting the thickness of gasket.
In above-mentioned compressor preferably, the material of above-mentioned shroud forming portion is stainless steel.
Since the shell of compressor is generally formed by casting such as cast iron or cast steels, by the material for making shroud forming portion
It is stainless steel, is capable of forming the corrosion resistance shroud forming portion higher than shell.
Manufacturing method based on compressor of the invention is the method for manufacturing above-mentioned compressor, and this method includes cutting out
Process cuts out in process at this, in the state that above-mentioned shroud forming portion is in conjunction with above-mentioned shell, while cutting out above-mentioned shell
The inner peripheral surface of inner peripheral surface and above-mentioned shroud forming portion.
According to the manufacturing method, it is able to easily form and does not have between the inner peripheral surface of shell and the inner peripheral surface of shroud forming portion
Stepped smooth shroud face.
In accordance with the invention it is possible to which the performance of compressor caused by the corrosion because of shell is inhibited to decline.
Detailed description of the invention
Fig. 1 is the partial sectional view of the turbo-compressor based on one embodiment of the present invention.
Fig. 2 is the enlarged drawing in the portion A in Fig. 1.
Fig. 3 is the cross-sectional view of compression unit shell.
Fig. 4 is the top view of the compression unit shell from case cover side.
Fig. 5 is the top view of diffuser.
Fig. 6 is the axial cross-sectional view along diffuser.
Specific embodiment
One embodiment of the present invention is illustrated referring to the drawings.
Fig. 1 is the partial sectional view of the turbo-compressor based on present embodiment.Compressor packet based on present embodiment
Include motor, speed increaser 2, compression unit shell 4, case cover 6, impeller 8, diffuser 10 and the gasket 11 of illustration omitted.
Speed increaser 2 carries out speedup to the rotary force of the motor of illustration omitted and is transferred to impeller 8.Speed increaser 2 includes saving
Slow-speed shaft, low-speed gear 12, high gear 14, high speed shaft 16 and the speed increaser shell 18 that sketch map shows.Low-speed gear 12 is externally embedded to
In the slow-speed shaft of illustration omitted, and it is configured in speed increaser shell 18.High gear 14 is set to high speed shaft 16, and with low speed tooth
12 engagement of wheel.The left end of high speed shaft 16 in Fig. 1 is prominent from speed increaser shell 18, and is combined with impeller 8.
As shown in Figure 1, compression unit shell 4 tightens together via case cover 6 and gasket 11 with speed increaser shell 18.At this
In embodiment, compression unit shell 4 is equivalent to shell of the invention.Compression unit shell 4 is formed by casting such as cast iron or cast steels.Pressure
Contracting portion shell 4 includes incorporating section 22, stores impeller 8；And scroll wraps 24, it is configured at the periphery of incorporating section 22, and and incorporating section
22 are integrally formed.
The inner space 22a configured for impeller 8 is provided in incorporating section 22.Inner space in the axial direction of high speed shaft 16
The both ends of 22a are open.Hereinafter referred to as " axial direction " when indicate high speed shaft 16 axial direction.Also, in will being with high speed shaft 16
The radial direction of the heart is referred to as " radial direction ".Case cover 6 covers the end of 18 side of speed increaser shell of inner space 22a.By inner space
The introducing port 22b that gas is constituted with the end of 6 opposite side of case cover of 22a.
Fig. 2 is the enlarged drawing in the portion A in Fig. 1.As shown in Fig. 2, forming the inner peripheral surface of the incorporating section 22 of inner space 22a
22c includes entrance side conical surface 22d, median surface 22e and outlet side conical surface 22f.
Entrance side conical surface 22d, median surface 22e and outlet side conical surface 22f are configured in order from introducing port 22b to 6 side of case cover.
From entrance side conical surface 22d up to the inner peripheral surface 22c of median surface 22e is formed as with the cone cell towards 6 side of case cover and undergauge.Out
Paroral cone face 22f be formed as with towards 6 side of case cover and expanding cone cell.The ora terminalis of 6 side of case cover of outlet side conical surface 22f
Portion 22g is equivalent to the end edge portion of 6 side of case cover of inner peripheral surface 22c.
Fig. 3 is the cross-sectional view axially of 4 monomer of compression unit shell.Compression unit shell 4, which has, is formed in outlet side cone
The chimeric recess portion 25 of the periphery of the end edge portion 22g of face 22f.Recess portion 25, which is fitted into, in end on observation is and the coaxial landform of inner peripheral surface 22c
At circular recess portion.
Scroll wraps 24 are configured at the radial outside of chimeric recess portion 25.Scroll wraps 24 are provided with the compressed gas of discharge
Vortex chamber 24a.Scroll wraps 24 have the end face 24b extended from the outer rim of chimeric recess portion 25 to radial outside.End face 24b perpendicular to
It is axial, and configured with gap with being spaced apart for case cover 6 as shown in Figure 2.
Fig. 4 is the top view of the compression unit shell 4 from 6 side of case cover.The peripheral part of scroll wraps 24 has and case cover 6
The peripheral end face 24d that (referring to Fig. 2) abuts.Peripheral end face 24d is perpendicular to axially configuring.It is formed in peripheral end face 24d
Circular annular groove 24e of the O-ring 50(of embedding sealing referring to Fig. 2).As shown in figure 4, annular groove 24e is configured to from incorporating section
22 axle center O1 eccentric position has center O2.It is empty in peripheral part and configuring annular groove 24e bias in scroll wraps 24
Region out is provided with the notch 24g being recessed to radially inner side.The omission connecting with compressor is avoided using notch 24g
The direct-connected pump of diagram (is located at the positive upside of the scroll wraps 24 in Fig. 1 in the present embodiment.) with the interference of compression unit shell 4.
As shown in Figure 1, impeller 8 is accommodated in the inner space 22a of incorporating section 22, and it is arranged to be pivoted freely.Leaf
Wheel 8 is an example of impeller of the invention.Impeller 8 has wheel hub 26 and multiple blades 28.
As shown in Figure 1, wheel hub 26 is combined in the state of with 16 arranged coaxial of high speed shaft with high speed shaft 16.Wheel hub 26 has
With from top 26a towards case cover 6 and to radial outside extend outer peripheral surface 26b.
Inner peripheral surface 22c and aftermentioned pan portion 32 of multiple blades 28 from the outer peripheral surface 26b of wheel hub 26 towards incorporating section 22
Inner peripheral surface 32a is prominent.Multiple blades 28 are configured in the circumferentially spaced compartment of terrain of wheel hub 26.Multiple blades 28 pass through with wheel hub 26
Metal material is integrally formed.As shown in Fig. 2, each blade 28 has with towards 6 side of case cover and towards radial outside
The external end edge 28a that mode extends.
Fig. 5 is the top view of diffuser 10, and Fig. 6 is the cross-sectional view axially of diffuser 10.As shown in Figure 5 and Figure 6,
Multiple guide vanes 34 that diffuser 10 has the pan portion 32 of plate and annular shape and is integrally formed with pan portion 32.
Pan portion 32 is an example based on shroud forming portion of the invention.As shown in Fig. 2, pan portion 32 and chimeric recess portion 25 are embedding
It closes, is anchored on compression unit shell 4 by multiple bolts 36.The material higher than the material of compression unit shell 4 by corrosion resistance of pan portion 32
Material is constituted.Specifically, the material of pan portion 32 is stainless steel.Pan portion 32 is configured in the state of being combined with compression unit shell 4
It is overlapped radially with the blade 28 of impeller 8.
As shown in Fig. 2, pan portion 32 has the inner peripheral surface 32a of R shape, inner peripheral surface 32a is with from the defeated of compression unit shell 4
Conical surface 22f in side is towards 6 side of case cover and close to expanding with axially vertical mode out.Inner peripheral surface 32a and compression unit shell 4
Inner peripheral surface 22c is formed together the continuous shroud face 38 opposed with the external end edge 28a of blade 28.Shroud face 38 is with towards shell
6 side of body cover and to radial outside extend smooth curved surface.The external end edge 28a of blade 28 has the shape along shroud face 38,
Small banding clearance is formed between shroud face 38 and the external end edge 28a of blade 28.
Pan portion 32 has the end face 32b towards 6 side of case cover.End face 32b is perpendicular to axial direction, and the interval with case cover 6
The configuration of standard width of a room in an old-style house unoccupied place.End face 32b is configured to continuous with the end face 24b of scroll wraps 24.Utilize the end face 32b and scroll wraps of pan portion 32
Gap between 24 end face 24b and case cover 6 forms the access of the inner space 22a and vortex chamber 24a of connection incorporating section 22
40。
Each guide vane 34 is the plate body being made of material identical with pan portion 32, and is integrally formed with pan portion 32.Such as
Shown in Fig. 2, each guide vane 34 is prominent from the end face 32b of pan portion 32 to 6 side of case cover.As shown in figure 5, multiple guide vanes 34
It is configured along the circumferentially spaced compartment of terrain of pan portion 32, and is configured to the radial skew relative to pan portion 32.Guide vane 34 is for making
By access 40(referring to Fig. 2) compressed gas disperse to the direction of rotation of impeller 8 to reducing flow velocity.
As depicted in figs. 1 and 2, gasket 11 be sandwich it is thin flat between case cover 6 and speed increaser shell 18
Component is typically inserted into the different multiple pads 11 of thickness.In addition, being illustrated for convenience in Fig. 2 and using a rectangle come table
Show multiple pads 11.Adjusting range required by gasket 11 is little, thickness (insertion it is multiple in the case where its thickness it is total
Value) planned value (initial value) be 1mm or less left and right.By the way that gasket 11 is arranged, case cover 6 and compression unit shell 4 can be made
In the state of being integrated, the axial position of above-mentioned component is adjusted.
In compressor formed as described above, when carrying out the compression of gas, the slow-speed shaft of illustration omitted is by coming from
The power of the motor of illustration omitted and rotate, the rotary motion of slow-speed shaft from low-speed gear 12(referring to Fig.1) speedup is transferred to
High gear 14.The rotary motion of high gear 14 is passed to impeller 8 from high speed shaft 16, and impeller 8 and high speed shaft 16 are integrally
Rotation.It is compressed as a result, from the gas in the inner space 22a that introducing port 22b is sucked into incorporating section 22 by impeller 8.Compression
Gas afterwards is when flowing to vortex chamber 24a by access 40, by the guide vane 34 of diffuser 10 to the direction of rotation of impeller 8
It spreads and reduces flow velocity.Along with the reduction of flow velocity, gas is boosted, and is discharged by vortex chamber 24a from compressor.
Next, being illustrated to the manufacturing method of the compressor based on present embodiment.
Firstly, forming the blank of the tubular of compression unit shell 4 using casting, chimeric recess portion is only formed by machining
25 and inner peripheral surface 22c(is referring to Fig. 3) etc. require the part of machining accuracy.Then, by the disk for the diffuser 10 being made of stainless steel
The blank in portion 32 is embedded into chimeric recess portion 25, referring to Fig.1 by bolt 36() it is anchored on the blank of compression unit shell 4.
Then, using lathe, rotate the blank of compression unit shell 4 and the blank of pan portion 32 integrally around axis, one
Side cuts out the inner peripheral surface 22c of incorporating section 22 and the inner peripheral surface 32a(of pan portion 32 referring to Fig. 2) simultaneously.That is, to the inner circumferential of incorporating section 22
Face 22c and the inner peripheral surface 32a of pan portion 32 are processed together.As a result, in the end edge portion 22g of outlet side conical surface 22f and pan portion 32
Inner peripheral surface 32a between there is no ladder, to form the inner peripheral surface 22c of incorporating section 22 and the inner peripheral surface 32a of pan portion 32, incorporating section
22 inner peripheral surface 22c and the inner peripheral surface 32a of pan portion 32 form smoothly continuous curved surface.
By above-described process, to form compression unit shell 4 and diffuser 10.
In addition pre-assembly speed increaser 2(is referring to Fig.1).Then, impeller 8 is installed on to the end of high speed shaft 16, and is passed through
The compression unit shell 4 formed in the above described manner is anchored on speed increaser shell 18 by case cover 6 and gasket 11.It makes as described above
Make the compressor based on present embodiment.
In the compressor of present embodiment described above, the inner peripheral surface 32a of pan portion 32 forms one of shroud face 38
Point, above-mentioned pan portion 32 is made of the corrosion resistance stainless steel higher than the cast iron or cast steel of the material as compression unit shell 4.Cause
This, is in the shroud face formed by pan portion 32, the expansion of banding clearance caused by capable of preventing because of corrosion.Therefore, it is able to suppress
The performance of compressor declines.
In addition, in order to prevent because of the expansion of banding clearance caused by corroding, additionally it is possible to form entire pressure using stainless steel
Contracting portion shell 4, but manufacturing cost significantly increases.In contrast, in the present embodiment, the diffusion being formed by stainless steel is utilized
The pan portion 32 of device 10, can be improved the corrosion resistance in shroud face 38, therefore, be able to suppress the increase of manufacturing cost.
Also, sometimes with age the deformation of compression unit shell 4, case cover 6 and speed increaser shell 18 caused by aging and make
Banding clearance expands.Because of corrosion, widened banding clearance is difficult to repair, and widened banding clearance can because of deformation
It could be adjusted to repair by the thickness to the gasket 11 sandwiched between case cover 6 and speed increaser shell 18.Therefore, by making
The shroud face 38 of the near exit of internally positioned space 22a is formed by the high pan portion 32 of corrosion resistance, so that in inner space 22a
Near exit, the reason of expansion of banding clearance, can be limited to expansion caused by can easily be done the deformation of adjustment
Greatly.
Also, in the present embodiment, in the state of making the blank of pan portion 32 in conjunction with the blank of compression unit shell 4,
Simultaneously cut out the inner peripheral surface 22c of incorporating section 22 and the inner peripheral surface 32a of pan portion 32, therefore be able to easily form by inner peripheral surface 22c,
The smooth shroud face 38 that 32a is constituted.
In addition, embodiment of disclosure be considered as in all respects all be illustrate, and and unrestricted embodiment party
Formula.The scope of the present invention not illustrates to indicate, but be indicated by claims by above-mentioned embodiment, includes and right
Being had altered in the claim equivalent meaning and range.
For example, the material of diffuser may not be defined in stainless steel.As long as corrosion resistance is higher than the material of compression unit shell
Material, it will be able to the material application as diffuser.The quantity of gasket 11 is also possible to 1.
Claims (4)
1. a kind of compressor, comprising:
Compression unit shell；
Impeller is rotatably freely set in above-mentioned compression unit shell；And
Diffuser is configured in above-mentioned compression unit shell, makes to be reduced by the flow velocity of the gas after above-mentioned wheel compresses,
Above-mentioned impeller has the blade that the inner peripheral surface towards above-mentioned compression unit shell extends,
Above-mentioned diffuser has shroud forming portion, and above-mentioned shroud forming portion is to be used to form the shroud face opposed with above-mentioned blade
The component of a part,
Above-mentioned shroud forming portion is made of the corrosion resistance material higher than the material of above-mentioned compression unit shell, above-mentioned compression unit shell
Material be cast iron or cast steel, the material of above-mentioned shroud forming portion is stainless steel,
The inner peripheral surface of the inner peripheral surface of above-mentioned shroud forming portion and above-mentioned compression unit shell is formed together continuous above-mentioned shroud face.
2. compressor according to claim 1, wherein
Above-mentioned compression unit shell has the inner space for storing above-mentioned impeller,
Above-mentioned shroud forming portion forms above-mentioned shroud face in the exit for the above-mentioned inner space that compressed above-mentioned gas is discharged.
3. compressor according to claim 2, the compressor include:
Speed increaser carries out speedup to the rotary force of motor and passes with gear and for the speed increaser shell of said gear configuration
It is handed to above-mentioned impeller；
Case cover covers the end of the above-mentioned speed increaser shell side of above-mentioned inner space；And
Gasket sandwiches between above-mentioned speed increaser shell and above-mentioned case cover.
4. a kind of manufacturing method of the compressor for compressor described in manufacturing claims 1, the above method includes cutting out work
Sequence cuts out in process at this, in the state that above-mentioned shroud forming portion is in conjunction with above-mentioned compression unit shell, while cutting out above-mentioned pressure
The inner peripheral surface of the inner peripheral surface of contracting portion shell and above-mentioned shroud forming portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014125357A JP6276117B2 (en) | 2014-06-18 | 2014-06-18 | Compressor and manufacturing method of compressor |
| JP2014-125357 | 2014-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105275883A CN105275883A (en) | 2016-01-27 |
| CN105275883B true CN105275883B (en) | 2019-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510339747.4A Active CN105275883B (en) | 2014-06-18 | 2015-06-18 | The manufacturing method of compressor and compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6276117B2 (en) |
| KR (1) | KR101745098B1 (en) |
| CN (1) | CN105275883B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6818443B2 (en) * | 2016-06-22 | 2021-01-20 | 日立グローバルライフソリューションズ株式会社 | Electric blower and vacuum cleaner equipped with it |
| CN108678974A (en) * | 2018-07-26 | 2018-10-19 | 江苏涞森环保设备有限公司 | A kind of various flow air blower |
| CN109236750B (en) * | 2018-08-06 | 2024-03-19 | 南京磁谷科技有限公司 | Adjusting structure for concentricity of air inlet channel and impeller |
| KR102134975B1 (en) * | 2018-11-23 | 2020-07-16 | 박상동 | Method for converting performance of centrifugal pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5785493A (en) * | 1995-12-20 | 1998-07-28 | Hitachi, Ltd. And Hitachi Car Engineering Co., Ltd. | Turbocharger for internal combustion engine |
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| JP2644110B2 (en) | 1991-07-05 | 1997-08-25 | 三菱電機株式会社 | Optical recording / reproducing device |
| JP3153378B2 (en) * | 1993-04-20 | 2001-04-09 | 株式会社日立製作所 | Supercharger manufacturing method and supercharger |
| JP4028923B2 (en) * | 1997-12-10 | 2008-01-09 | 株式会社協立 | Turbocharger with sliding member |
| EP1991789A2 (en) * | 2005-09-13 | 2008-11-19 | Ingersoll Rand Company | Volute for a centrifugal compressor |
| JP2007332826A (en) * | 2006-06-13 | 2007-12-27 | Kobe Steel Ltd | Centrifugal compressor |
| CN201013667Y (en) * | 2006-11-09 | 2008-01-30 | 北京航天石化技术装备工程公司 | Chemical centrifugal pump |
| JP2010275878A (en) * | 2009-05-26 | 2010-12-09 | Ihi Corp | Impeller, supercharger, and method for manufacturing the impeller |
| JP5533060B2 (en) * | 2010-03-12 | 2014-06-25 | 株式会社Ｉｈｉ | Turbocharger |
| JP4778097B1 (en) * | 2010-04-23 | 2011-09-21 | 株式会社オティックス | Compressor housing for supercharger and method for manufacturing the same |
| US8820072B2 (en) * | 2011-08-23 | 2014-09-02 | Honeywell International Inc. | Compressor diffuser plate |
| JP6085899B2 (en) * | 2012-01-26 | 2017-03-01 | 株式会社Ihi | Rotating machinery and centrifugal compressors |
| JP2014088785A (en) * | 2012-10-29 | 2014-05-15 | Otics Corp | Compressor housing for supercharger |
-
2014
- 2014-06-18 JP JP2014125357A patent/JP6276117B2/en active Active
-
2015
- 2015-06-15 KR KR1020150083841A patent/KR101745098B1/en active IP Right Grant
- 2015-06-18 CN CN201510339747.4A patent/CN105275883B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5785493A (en) * | 1995-12-20 | 1998-07-28 | Hitachi, Ltd. And Hitachi Car Engineering Co., Ltd. | Turbocharger for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016003626A (en) | 2016-01-12 |
| KR20150145185A (en) | 2015-12-29 |
| KR101745098B1 (en) | 2017-06-08 |
| CN105275883A (en) | 2016-01-27 |
| JP6276117B2 (en) | 2018-02-07 |
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