CN104024650B - For accommodating the compressor housing of impeller - Google Patents
For accommodating the compressor housing of impeller Download PDFInfo
- Publication number
- CN104024650B CN104024650B CN201280065755.9A CN201280065755A CN104024650B CN 104024650 B CN104024650 B CN 104024650B CN 201280065755 A CN201280065755 A CN 201280065755A CN 104024650 B CN104024650 B CN 104024650B
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- China
- Prior art keywords
- impeller
- swirler passages
- scroll element
- circumferential direction
- compressor housing
- Prior art date
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- 238000011144 upstream manufacturing Methods 0.000 claims description 34
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 4
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 4
- 230000001154 acute effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/026—Scrolls for radial machines or engines
-
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
Compressor housing (1) includes scroll element (2), shield part (4) and annular element (6).Scroll element (2) has the first position portion (31) and the second position portion (32), first position portion contact shield part (4) to determine the position of shield part (4) along the circumferential direction of impeller (8) relative to scroll element (2), and the second position portion contact annular element (6) to determine the position of annular element (6) along the circumferential direction of impeller (8) relative to scroll element (2).First position portion (31) is formed at the second position portion (32) along the identical position of the circumferential direction of impeller (8).
Description
Technical field
The present invention relates to a kind of pressure such as used in the centrifugal compressor of exhaust turbine supercharger
Contracting casing body.
Background technology
Such as, Patent Document 1 discloses this compressor housing.The pressure of patent documentation 1
Contracting casing body accommodates impeller and has for the suction inlet towards impeller conduct air with around impeller
The swirler passages extended circlewise.Compressor housing farther includes scroll element, guard section
Part and annular element.
Hereinafter, compressor housing, along impeller axial direction near the side of suction inlet
It is referred to as distally, and is referred to as nearside farther away from the side of suction inlet.Impeller is positioned at suction
On the nearside of mouth.
The distally that scroll element has the tubulose suction part forming suction inlet, forms swirler passages
The vortex wall part of wall surface, and it is partially toward, from vortex wall, the outer wall section that nearside extends.Outward
Wall part is positioned at outside swirler passages along impeller radial direction and prolongs along impeller circumferential direction
Stretch.
Shield part has cover portion and the department of assembly of the suction part that will fit into scroll element
Point.Wall surface on the nearside of the inner circumferential that cover portion is included in swirler passages, in the face of impeller
Guard shield surface, and the diffusing surface extended towards swirler passages from guard shield surface.
Annular element includes contacting the outer surface of the inner side of the outer wall section of scroll element and being positioned at
Proximal wall surface on the periphery of swirler passages.
Scroll element is formed by molding.Shield part and annular element are by molding one landform
Become then to be isolated after being installed to scroll element.
In swirler passages, air flows to downstream along impeller circumferential direction from upstream extremity.Whirlpool
The cross-sectional area of rotation passage increases towards downstream from upstream extremity.
And, tubulose discharge part forms with scroll element.Discharge is attached partially to whirlpool
The downstream of rotation passage is with air-out.
Scroll element and shield part have the contact site contacted with each other along impeller axial direction
Divide, and scroll element and annular element have the contact contacted with each other along impeller axial direction
Part.By making contact portion contact with each other, along impeller axial direction relative to scroll portion
Part determines the position of shield part and annular element.
Guard section must be determined relative to scroll element also along the circumferential direction of impeller scroll element
Part and the position of annular element.But, patent documentation 1 does not has disclosure and along impeller circumference side
To position determine relevant any configuration.
Patent document 2 discloses that a kind of compressor housing, wherein corresponding to the part of shield part
Form with the part corresponding to annular element.Near swirler passages downstream,
Compressor housing, corresponding in the part of annular element formed position portion.Position portion edge
Impeller circumferential direction relative to scroll element determine compressor housing, corresponding to annular element
Position with the part of shield part.
Traditionally, determine the position of shield part relative to scroll element along impeller circumferential direction
Position portion be formed at the upstream extremity of swirler passages.That is, position portion be formed at vortex lead to
At road, the part with cross-sectional area.
Having been proposed for the traditional compressor housing of another type, it includes for along impeller
Circumferential direction determines the position portion of shield part and for determining ring part relative to scroll element
The position portion of the position of part.The position portion of such compressor housing be formed at along
The position that impeller circumferential direction is different.Therefore, when shield part and annular element are assembled into
During scroll element, workman should be noted that the part that the two is different: for determining shield part
The position portion of position and for determining both position portions of the position of annular element.This makes
It is laborious for shield part and annular element must being assembled into scroll element.
Reference listing
Patent documentation
[patent documentation 1] JP spy 2011-231620A
[patent documentation 2] US7179051B2
Summary of the invention
Technical problem
Correspondingly, it is an object of the invention to, it is provided that a kind of permission shield part and annular element
Easily and accurately it is assembled into the compressor housing of scroll element.
The solution of problem
Will be discussed for now realizing the means of object above and advantage thereof.
(1) according to an aspect of the present invention, it is provided that a kind of compression case for accommodating impeller
Body, this compressor housing includes for sucking the suction inlet of air towards impeller and being positioned at impeller
The swirler passages around and along impeller circumferential direction extended.Along impeller axial direction,
The distally of compressor housing it is defined as near the side of suction inlet.Farther away from suction inlet one
Side is defined as nearside.This compressor housing includes scroll element, shield part and annular element.
Scroll element includes forming the tubulose suction part of suction inlet, forming the distal walls table of swirler passages
The vortex wall part in face, and it is partially toward, from vortex wall, the outer wall section that nearside extends.Outside wall portions
Divide and be positioned at outside swirler passages along impeller radial direction and extend along impeller circumferential direction.
Shield part includes assembled portion and cover portion.Assembled portion is assembled to the suction of scroll element
Part.Cover portion has first of the swirler passages on the nearside of the inner circumferential being positioned at swirler passages
Proximal wall surface, in the face of the guard shield surface of impeller, and extend from guard shield surface towards swirler passages
Diffusing surface.Annular element includes on the nearside of outer surface and the periphery that is positioned at swirler passages
The second proximal wall surface of swirler passages.Annular element is assembled to the outer wall section of scroll element
Thus the inner side of the outer surface of annular element contact outer wall section.By assemble scroll element,
Shield part forms compressor housing together with annular element.Scroll element includes that contact is protected
Cap assembly to determine the of the position of shield part along impeller circumferential direction relative to scroll element
One position portion, and contacts annular element with true relative to scroll element along impeller circumferential direction
Second position portion of the position of annular parts.First position portion and the second location division are fractal
Become at the same position along impeller circumferential direction.
According to configuration as above, determine shield part along impeller circumferential direction relative to scroll element
The first position portion of position and determine annular along impeller circumferential direction relative to scroll element
Second position portion of the position of parts is formed at along the identical position of impeller circumferential direction.
That is, the first position portion and the second position portion are formed on the same level comprising impeller axis.
Therefore, shield part can be in the position identical along impeller circumferential direction with the position of annular element
The place of putting determines.Therefore, shield part and annular element are easily and accurately assembled into vortex
Parts.
Especially, when by forming shield part and annular element and by guard section
Part and annular element be assembled into scroll element after by shield part and annular element from isolating each other
And when manufacturing compressor housing, this configuration is easy to assemble.
(2) preferably, in swirler passages, air leads to along impeller circumferential direction from vortex
The upstream extremity in road flow to downstream, the cross-sectional area of swirler passages from upstream extremity towards downstream
End increases, and the first position portion and the second position portion are formed at the upstream extremity of swirler passages
Place.
First position portion of scroll element contacts shield part and ring respectively with the second position portion
Shape parts.This structure is likely to be formed between components step.If shape in swirler passages
Becoming, the most this step will increase for the flowing resistance by the air of swirler passages, and because of
This reduces the performance of compressor.
In this respect, the first position portion and second position portion of above-mentioned configuration is formed at vortex
At the upstream extremity of passage.That is, the first position portion and the second position portion exist at the step formed
Increase herein for flow resistance has the position formation of minimum influence.Therefore, it is reliably prevented
The flow resistance that the step formed by the first position portion and the second position portion increases in swirler passages is
Possible.
(3) preferably, tubulose discharge part forms with scroll element, discharges part
It is connected to the downstream of swirler passages with air-out, and discharges part in following position
Be connected to scroll element, described in be located along the upstream extremity of impeller circumferential direction and swirler passages
Identical position and along impeller axial direction offset.
According to configuration as above, swirler passages maximizes along the length of impeller circumferential direction.And,
It is reliably prevented the step formed by the first position portion and the second position portion further and increases whirlpool
Flow resistance in rotation passage is possible.
Accompanying drawing explanation
[Fig. 1] Fig. 1 is that signal has compressor housing according to an embodiment of the invention
The cross sectional view of centrifugal compressor.
[Fig. 2] Fig. 2 is as being the compressor housing of embodiment of Fig. 1 from cartridge housing unilateral observation
The plan view of scroll element of a part.
[Fig. 3] Fig. 3 is the perspective view of the scroll element of the embodiment of schematic diagram 1.
[Fig. 4] Fig. 4 is the aperspective cross section side view of the line 4-4 intercepting along Fig. 2.
[Fig. 5] Fig. 5 be signal be the protecting an of part of the compressor housing of the embodiment of Fig. 1
The perspective view of cap assembly.
[Fig. 6] Fig. 6 is as from the suction inlet unilateral observation of the compressor housing ground embodiment of Fig. 1
The plan view of shield part.
[Fig. 7] Fig. 7 is the aperspective cross section side view of the line 7-7 intercepting along Fig. 6.
[Fig. 8] Fig. 8 be signal be the ring of a part of the compressor housing of the embodiment of Fig. 1
The perspective view of shape parts.
[Fig. 9] Fig. 9 is as from the suction inlet unilateral observation of the compressor housing ground embodiment of Fig. 1
The plan view of annular element.
[Figure 10] Figure 10 is the aperspective cross section side view of the line 10-10 intercepting along Fig. 9.
[Figure 11 A] Figure 11 A is the perspective view of the scroll element of the embodiment of schematic diagram 1.
[Figure 11 B] Figure 11 B is the saturating of the shield part of the embodiment of schematic diagram 1 and annular element
View.
[Figure 12 A] Figure 12 A is the perspective view of the scroll element of signal comparative example.
[Figure 12 B] Figure 12 B is shield part and the perspective of annular element of signal comparative example
Figure.
Detailed description of the invention
Hereinafter, with reference to accompanying drawing, compressor according to an embodiment of the invention will be described
Housing.This compression is used in forming the centrifugal compressor of a part of exhaust turbine supercharger
Casing body.
In the following description, along the axial direction of impeller 8 closer to the side of suction inlet 22
(on the left of when observing in FIG) will be referred to as the distally of compressor housing 1, and away from suction
The side (on the right side of when observing in FIG) of entrance 22 will be referred to as the nearside of compressor housing 1.
The axial direction of impeller 8, radial direction and circumferential direction will be referred to as respectively axial direction,
Radial direction and circumferential direction.
As shown in FIG. 1, impeller 8 has hub 81 and along the radial direction of impeller 8 from hub
81 outward extending blades 82.Hub 81 has the centre bore of the far-end for receiving axle 9.Axle 9
In a rotative pattern by the bearings in cartridge housing 100.Axle 9 extends through bearing, and
The near-end of axle 9 is couple to wheel (not shown).
Compressor housing 1 accommodates impeller 8 on nearside.Compressor housing 1 also has for court
Suck the suction inlet 22 of air to impeller 8 and be positioned at around impeller 8 and along impeller 8
The swirler passages 12 that circumferential direction extends.Compressor housing 1 includes scroll element 2, guard section
Part 4 and annular element 6.
Scroll element 2 includes main body 20 and is connected to the tubulose discharge part 35 of main body 20.
Main body 20 have tubulose suction part 21, from the near-end of suction part 21 along radially to
The vortex wall part 25 of outer extension, and from the proximally facing extension in the periphery of vortex wall part 25
Wall part 27.Outer wall section 27 is positioned at outside swirler passages 12 along the axial direction of impeller 8
And the circumferential direction along impeller 8 extends.
Opening on the nearside of suction part 21 is used as to suck the suction inlet of air towards impeller 8
22.Locking projections 24 is formed along whole inner peripheral surface 23 of suction part 21.Locking projections
24 from inner peripheral surface 23 along radially inwardly projecting.
Vortex wall part 25 include from impeller 8 along radially-inwardly position near surface 25a (
Hereinafter, it is referred to as inner near surface), and the nearly table from the radially outward location of impeller 8
Face 25b (hereinafter, be referred to as outer proximal surface), and in inner near surface 25a and outside
The distal walls surface 26 extended between near surface 25b.Distal walls surface 26 is in the face of swirler passages
12 and form the distal walls surface of swirler passages 12.Distal walls surface 26 has in cross section
Semicircular in shape.
Shield part 4 has basic tubular form, and includes assembled portion 41 and cover portion
43。
Assembled portion 41 has a tubular form, and press-fits and fit in suction part 21, thus
The inner peripheral surface 23 of the suction part 21 of its outer surface contact scroll element 2.Assembled portion
41 have remote surface 42, and this remote surface 42 contacts the locking projections 24 of suction part 21.Make
Remote surface 42 contacts the locking projections 24 axial direction along impeller 8 relative to scroll element 2
Determine the position of guard shield 4.
Cover portion 43 extends from the near-end of assembled portion 41 towards the nearside of compressor housing 1.
First proximal wall surface 44 is formed on the outer surface of cover portion 43.First proximal wall table
Face 44 from swirler passages 12 along the proximal wall radially-inwardly positioning and being formed swirler passages 12
Surface.In the face of the guard shield surface 45 of impeller 8 is formed in the inner peripheral surface of cover portion 43.
Diffusing surface 46 is formed in the nearside of cover portion 43.Diffusing surface 46 is from guard shield surface 45
Extend radially outward.That is, diffusing surface 46 from guard shield surface 45 towards swirler passages 12
Extend.First proximal wall surface 44 has basic quadrant shape shape in cross section.
Additionally, cover portion 43 has remote surface 48, remote surface 48 axially faced by
Inner near surface 25a of vortex wall part 25.
Annular element 6 has outer surface 61 and forms the interior weekly form on the second proximal wall surface 63
Face.
Annular element 6 press-fits and fits in scroll element 2, thus the outer surface of annular element 6
The inner peripheral surface of the outer wall section 27 of 61 contact scroll elements 2.
Second proximal wall surface 63 forms proximal wall surface on the periphery of swirler passages 12.The
Two proximal wall surfaces 63 have quadrant shape shape in cross section.
The remote surface 68 of annular element 6 is axially in the face of the outside of vortex wall part 25
Near surface 25b.
Scroll element 2, shield part 4 and annular element 6 are all formed by molding.
With reference to figs. 2 to 4, the structure of scroll element 2 be will now be described.
In swirler passages 12, air is from the three position being in Fig. 2, swirler passages
The upstream extremity counterclockwise flow of 12 to be in from Fig. 2 four position to three position
In scope, the downstream of swirler passages 12.As shown in Figure 2 to 4, form vortex to lead to
The distal walls surface in road 12, vortex wall part 25 distal walls surface 26 is formed as having edge
The cross-sectional area that circumferential direction is amplified towards downstream.That is, the cross section of swirler passages 12
Area little by little amplifies along the counter clockwise direction in Fig. 2.
As shown in FIG. 3, swirler passages 12 is formed as having spiral in shape, thus along with
Reducing along the distance of swirler passages 12 away from downstream, its centrally directed far-end in cross section moves
Position.
In the main body 20 of scroll element 2, the downstream of swirler passages 12 is connected to extension
The discharge part 35 stretched.Specifically, swirler passages 12 downstream end along discharge part 35
Axial direction extend.
Boundary between the upstream extremity and downstream of swirler passages 12, step part 30 shape
Become in vortex wall part 25.Step part 30 extends along the axial direction of impeller 8.Platform
Exponent part 30 has along the end of the downstream of swirler passages 12 faced by the circumferential direction of impeller 8
Face.This end face forms the first position portion of the inner side and outer side being respectively located in swirler passages 12
31 and second position portion 32.
First position portion 31 is so configured so that when shield part 4 contacts the first position portion
When 31, determine the position of shield part 4 relative to scroll element 2.
Second position portion 32 is so configured so that when annular element 6 contacts the second position portion
When 32, determine the position of annular element 6 relative to scroll element 2.
That is, to have circumferentially direction fixed generally within first at same position for scroll element 2
Bit position 31 and the second position portion 32.Discharge part 35 and be connected to whirlpool in following position
The main body 20 of rotation parts 2, described in be located along the circumferential direction of impeller 8 and swirler passages 12
The identical position of upstream extremity and offset along the axial direction of impeller 8.
With reference to Fig. 5 to 7, the structure of shield part 4 be will now be described.
At Fig. 5 to as shown in 7, the first proximal wall surface 44 is at the nearside of swirler passages 12
Upper formation inner circumferential wall.Width base along radial direction the first proximal wall surface 44 of impeller 8
In basis, circumferentially direction increases towards downstream.Swirler passages 12 is formed along the first nearside
Wall surface 44 is clockwise from the swirler passages 12 of the three position being in Fig. 6
Upstream extremity extend to be in from Fig. 6 two position in the scope of three position
The downstream of swirler passages 12.Radial direction the first proximal wall surface 44 along impeller 8
Width increases from the upstream extremity of swirler passages 12 clockwise.
But, along the width on radial direction the first proximal wall surface 44 of impeller 8 from an o'clock
Position is incrementally decreased to three position.The remote surface 48 of shield part 4 is formed spirally,
Thus along with the downstream away from swirler passages 12 reduces along the distance of swirler passages 12, remote table
Face 48 shifts towards distally.At remote surface 48, circumferential direction contact surface 47 is formed at whirlpool
Boundary between upstream extremity and the downstream of rotation passage 12.Circumferential direction contact surface 47 shape
Become the step of the axial direction extension along impeller 8.
Then, with reference to Fig. 8 to 10, the structure of annular element 6 be will now be described.
At Fig. 8 to as shown in 10, the second proximal wall surface 63 is at the nearside of swirler passages 12
Upper formation outer circumference wall.Width base along radial direction the second proximal wall surface 63 of impeller 8
In basis, circumferentially direction increases towards downstream.Swirler passages 12 is formed as from being in Fig. 9
The upstream extremity of swirler passages 12 of three position along the second proximal wall surface 63 along suitable
Clockwise extends.Along impeller 8 radial direction the second proximal wall surface 63 width along
The clockwise direction of Fig. 9 increases from the upstream extremity of swirler passages 12.
Width along the remote surface 68 of the radial direction annular element 6 of impeller 8 leads to towards vortex
The downstream in road 12 is incrementally decreased.And, remote surface 68 is located at the upper of swirler passages 12
Near the position in distally at trip end.Additionally, remote surface 68, corresponding to swirler passages 12
A part of upstream extremity and the second proximal wall surface 63, corresponding to swirler passages 12
One part circumferentially direction of downstream is adjacent one another are.Second proximal wall surface 63, right
Should be in the downstream of swirler passages 12 a part with remote surface 68, logical corresponding to vortex
One part of the upstream extremity in road 12 is compared and is positioned to closer to nearside.That is, formed along leaf
The circumferential direction contact surface 67 of the step that the axial direction of wheel 8 extends is formed at remote surface 68
, corresponding to the part of upstream extremity of swirler passages 12 and the second proximal wall surface 63,
Corresponding to swirler passages 12 downstream and circumferentially direction be adjacent to remote surface 68 should
Boundary between one part of part.
With reference to Figure 11 A, 11B, 12A and 12B, the operation of above-described embodiment will be described.
As shown in Figure 11 A, for the circumferential direction along impeller 8 relative to scroll element
First position portion 31 of 2 positions determining shield part 4 and for the circumference along impeller 8
Direction determines that relative to scroll element 2 second position portion 32 of the position of annular element 6 is positioned at
The position that circumferentially direction is identical.That is, the first position portion 31 and the second position portion 32
It is formed on the same level of the axis comprising impeller 8.
When shield part 4 and annular element 6 are assembled into scroll element 2 and its position is able to really
Regularly, the circumferential direction contact surface 47 of shield part 4 and the circumferential direction of annular element 6 connect
Touch surface 67 to be positioned at along the identical position of circumferential direction.Now, the circumference of shield part 4
Direction contact surface 47 contacts the first position portion 31, and the circumferential direction of annular element 6 connects
Touch surface 67 and contact the second position portion 32.
Figure 12 A and 12B illustrates comparative example, wherein the first position portion 131 and the second location
Part 132 is positioned at along the different position of circumferential direction.Compressor according to above-described embodiment
Housing 1, shield part 4 and annular element 6 are positioned at along the identical position of circumferential direction, this
Comparative example unlike Figure 12 A and 12B.
In the comparative example of Figure 12 A and 12B, the second position portion 132 of scroll element 102
Protrude further along the circumferential direction of impeller 8 than the first position portion 131, and discharge portion
135 are divided to be present between the first position portion 131 and the second position portion 132.Therefore, exist
In the comparative example of Figure 12 A and 12B, as by replacing shape by dash with short stroke in fig. 12
Become line surround fragment shown in meaning ground, scroll element 102, include the second position portion
One part of 132 is according to the profile bending discharging part 135.In the above-described embodiments, first
Position portion 31 and the second position portion 32 are in the identical position of the circumferential direction along impeller 8
Place.In the above-described embodiments, as by passing through dash and the short stroke of line being alternatively formed in Figure 11 B
Meaning ground shown in the fragment surrounded, a part of annular element 6 is according to discharging outside part 35
Shape bends.
Additionally, discharge part 35 to be connected to the main body 20 of scroll element 2 in following position,
The position that the described circumferential direction being located along impeller 8 is identical with the upstream extremity of swirler passages 12
And the axial direction along impeller 8 offsets.Therefore, along the circumferential direction vortex of impeller 8
The length of passage 12 maximizes.
Shield part 4 contacts first position portion 31 and of scroll element 2 with annular element 6
Two position portions 32.Step will be likely formed at the contact position of these components.If in whirlpool
There is this step in rotation passage, then step will increase for the air flowed by swirler passages
Resistance, and the performance of compressor can not be improved.
In this respect, first position portion 31 and second position portion 32 shape of above-described embodiment
Become at the upstream extremity of swirler passages 12.That is, the first position portion 31 and the second position portion
32 are formed at formed step has the position of minimum influence in the increase herein for flow resistance
Place.
In the comparative example of Figure 12 A and 12B, the second position portion 132 of scroll element 102
Circumferential direction along impeller 8 highlights further than the first position portion 131.Therefore, prominent
Portion's (hereinafter, being referred to as acute angle portion 138) is thin and sharp.Therefore, when by casting
When appearance becomes scroll element 102, it is difficult to utilize motlten metal to fill in a mold corresponding to acute angle
The hole of part 138, this is likely to cause defect.
In this respect, because first position portion 31 and second position portion of above-described embodiment
32 are positioned at along the identical position of the circumferential direction of impeller 8, thus fractal without any acute angle part
Become at the upstream extremity of swirler passages 12.Therefore reliably prevent the generation of defect.
The compressor housing of above-described embodiment has the following advantages.
(1) compressor housing 1 accommodates impeller 8, and has for sucking sky towards impeller 8
The suction inlet 22 of gas and be positioned at around impeller 8 and extend along the circumferential direction of impeller 8
Swirler passages 12.Compressor housing 1 includes scroll element 2, shield part 4 and annular element 6.
Scroll element 2 includes forming the tubulose suction part 21 of suction inlet 22, forming swirler passages 12
The vortex wall part 25 on distal walls surface, and from the proximally facing extension of vortex wall part 25
Wall part 27.Outer wall section 27 is along being radially disposed in outside swirler passages 12 and along impeller
The circumferential direction of 8 extends.Shield part 4 has assembled portion 41 and cover portion 43.Assembling
Part 41 is assembled to the suction part 21 of scroll element 2.It is at vortex that cover portion 43 has
First proximal wall surface 44 of the wall surface on the nearside of the inner circumferential of passage 12, in the face of impeller 8
Guard shield surface 45, and the diffusing surface 46 extended towards swirler passages 12 from guard shield surface 45.
Annular element 6 has the outer surface of the inner peripheral surface of the outer wall section 27 of contact scroll element 2
61, and in the periphery of swirler passages 12, form the second proximal wall surface 63 on proximal wall surface.
Scroll element 2 has contact shield part 4 with the circumferential direction along impeller 8 relative to vortex
Parts 2 determine the first position portion 31 of the position of shield part 4, and contact annular element 6
To determine the position of annular element 6 relative to scroll element 2 along the circumferential direction of impeller 8
Second position portion 32.First and second position portions 31,32 are positioned at the circumference along impeller 8
The position that direction is identical.This allows shield part 4 and annular element 6 easily and accurately
Be assembled into scroll element 2.
(2) swirler passages 12 includes upstream extremity and downstream along the circumferential direction of impeller 8,
And the cross-sectional area of swirler passages 12 reduces towards downstream from upstream extremity.Tubulose discharge portion
Points 35 form with the main body 20 of scroll element 2.Discharge part 35 is connected to vortex and leads to
The downstream in road 12 is with air-out.First position portion 31 and the second position portion 32 are formed
At the upstream extremity that swirler passages 12 has cross-sectional area herein.Specifically, discharge
Part 35 is connected to the main body 20 of scroll element 2 in following position, described in be along impeller
Position that the circumferential direction of 8 is identical with the upstream extremity of swirler passages 12 and the axle along impeller 8
Offset to direction.This configuration is reliably prevented can be by the first position portion 31 and the second location
The step that part 32 is formed increases the flow resistance in swirler passages 12.
Compressor housing according to the present invention configures shown in being not constrained in the embodiment above,
But can be such as amendment shown below.
In the above-described embodiments, shield part 4 and annular element 6 form then group by molding
Install to scroll element 2.Substituting this configuration ground, shield part and annular element can be as specially
The situation of the compressor housing disclosed in profit document 1 forms like that, and integrated structure
Part is assembled into scroll element and is then cut into shield part and annular element.As at above-described embodiment
Situation in, this amendment the most reliably be easy to assemble.
In the embodiment above, discharge part 35 and be the circumferential direction along impeller 8 and vortex
Position that the upstream extremity of passage 12 is identical and the position that the axial direction along impeller 8 offsets
It is connected to the main body 20 of scroll element 2.For maximizing the circumferential direction vortex along impeller 8
The length of passage 12, at upstream extremity, this layout of swirler passages 12 is preferred.But,
The invention is not restricted to this configuration.Such as, the upstream extremity of swirler passages can be formed in fig. 2
Position, and may be located at the circumferential direction along impeller 8 and was different from coupling part two
Position.
In the above-described embodiments, the first position portion 31 and the second position portion 32 are formed at whirlpool
Rotation passage 12 has herein at the upstream extremity of cross-sectional area.This configuration prevents can
The step formed by the first position portion 31 and the second position portion 32 increases in swirler passages 12
Flow resistance.But, the invention is not restricted to this configuration.If this increase of flow resistance is to neglect
Slightly, then the first position portion 31 and the second position portion 32 can be formed at swirler passages 12
In.
Reference numerals list
1 compressor housing
12 swirler passages
2 scroll elements
21 suction parts
22 suction inlets
25 vortex wall parts
26 distal walls surfaces
27 outer wall sections
31 first position portions
32 second position portions
35 discharge part
4 shield parts
41 assembled portion
43 cover portion
44 first proximal wall surfaces
45 guard shield surfaces
46 diffusing surfaces
6 annular elements
61 outer surfaces
63 second proximal wall surfaces
8 impellers
Claims (3)
1., for accommodating a compressor housing for impeller, described compressor housing includes suction inlet
And swirler passages, described suction inlet is for sucking air, described swirler passages towards described impeller
It is positioned at around described impeller and extends in the circumferential direction of described impeller, wherein at described leaf
The side of the close described suction inlet on the axial direction of wheel is defined as described compressor housing
Distally, and the side away from described suction inlet is defined as nearside, the spy of described compressor housing
Levy and be:
Scroll element, described scroll element has: tubulose suction part, and described sucting is fractal
Become described suction inlet；Vortex wall part, described vortex wall part forms the remote of described swirler passages
Sidewall surfaces；And outer wall section, described outer wall section is partially toward described from described vortex wall
Nearside extends, and described outer wall section is positioned at described swirler passages in the radial direction at described impeller
Outside and extension in the circumferential direction of described impeller；
Shield part, described shield part has assembled portion and cover portion, wherein said dress
Join part and be mounted to the described suction part of described scroll element, and described cover portion tool
Having: the first proximal wall surface of described swirler passages, described first proximal wall surface is positioned at described
On the nearside of the inner circumferential of swirler passages；Guard shield surface, described guard shield surface is in the face of described impeller；
And diffusing surface, described diffusing surface extends towards described swirler passages from described guard shield surface；
And
Annular element, described annular element includes: outer surface；And described swirler passages
Second proximal wall surface, described second proximal wall surface is positioned at the near of the periphery of described swirler passages
On side, described annular element is mounted to the described outer wall section of described scroll element so that institute
The described outer surface stating annular element contacts the inner side of described outer wall section,
Wherein
Described compressor housing is by by described scroll element, described shield part and described annular
Parts are assemblied together and are formed, and
Described scroll element includes the first position portion and the second position portion, described first location
Shield part described in part contact is to determine that described shield part is in the circumferential direction of described impeller
Relative to the position of described scroll element, and described second position portion contacts described annular element
With determine described annular element in the circumferential direction of described impeller relative to described scroll element
Position, described first position portion and described second position portion are in the circumferential direction of described impeller
On be formed on identical position.
Compressor housing the most according to claim 1, it is characterised in that:
In described swirler passages, air leads to from described vortex in the circumferential direction of described impeller
The upstream extremity in road flows to downstream, and the cross-sectional area of described swirler passages is from described upstream extremity court
Increase to described downstream, and
Described first position portion and described second position portion are formed on described swirler passages
At described upstream extremity.
Compressor housing the most according to claim 2, it is characterised in that:
Tubulose discharge part forms with described scroll element, and described part of discharging is connected
To the described downstream of described swirler passages with air-out, and
Described discharge part is connected to described scroll element, described position in following position
It it is position identical with the described upstream extremity of described swirler passages in the circumferential direction of described impeller
And offset on the axial direction of described impeller.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012000728A JP5369198B2 (en) | 2012-01-05 | 2012-01-05 | Compressor housing |
| JP2012-000728 | 2012-01-05 | ||
| PCT/JP2012/008180 WO2013102978A1 (en) | 2012-01-05 | 2012-12-21 | Azimuthal alignment of three parts of a compressor volute |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104024650A CN104024650A (en) | 2014-09-03 |
| CN104024650B true CN104024650B (en) | 2016-08-17 |
Family
ID=47630460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280065755.9A Expired - Fee Related CN104024650B (en) | 2012-01-05 | 2012-12-21 | For accommodating the compressor housing of impeller |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2800905B1 (en) |
| JP (1) | JP5369198B2 (en) |
| CN (1) | CN104024650B (en) |
| WO (1) | WO2013102978A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5937508B2 (en) * | 2012-12-28 | 2016-06-22 | トヨタ自動車株式会社 | Turbocharger housing |
| CN104454652B (en) * | 2014-10-16 | 2017-07-25 | 珠海格力电器股份有限公司 | Volute structure, centrifugal compressor and refrigeration plant |
| JP6322121B2 (en) | 2014-10-29 | 2018-05-09 | 株式会社オティックス | Compressor structure for turbocharger |
| CN106194837B (en) * | 2016-07-13 | 2018-07-27 | 佛山市威灵洗涤电机制造有限公司 | Pump case, centrifugal pump and the dish-washing machine of centrifugal pump |
| DE102017106360A1 (en) * | 2017-03-24 | 2018-09-27 | Man Diesel & Turbo Se | Compressor for a turbocharger |
| FR3075889A1 (en) * | 2017-12-22 | 2019-06-28 | Valeo Systemes De Controle Moteur | VOLUTE AND METHOD FOR MANUFACTURING A VOLUTE |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6193463B1 (en) * | 1999-06-30 | 2001-02-27 | Alliedsignal, Inc. | Die cast compressor housing for centrifugal compressors with a true volute shape |
| CN101245791A (en) * | 2007-02-16 | 2008-08-20 | 统一麦特考公司 | Method for die-casting compressor cylinder block |
| CN101922459A (en) * | 2010-07-28 | 2010-12-22 | 寿光市康跃增压器有限公司 | Electric composite multi-stage centrifugal compressor device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58200003A (en) * | 1982-05-18 | 1983-11-21 | Ishikawajima Harima Heavy Ind Co Ltd | Scroll of rotary machine |
| JPS6081498A (en) * | 1983-10-03 | 1985-05-09 | ザ ギヤレツト コ−ポレ−シヨン | Compressor housing |
| US7179051B2 (en) * | 2004-11-19 | 2007-02-20 | Consolidated Metco. Inc. | Method of die casting compressor housings |
| 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 |
-
2012
- 2012-01-05 JP JP2012000728A patent/JP5369198B2/en active Active
- 2012-12-21 WO PCT/JP2012/008180 patent/WO2013102978A1/en active Application Filing
- 2012-12-21 EP EP12820946.7A patent/EP2800905B1/en active Active
- 2012-12-21 CN CN201280065755.9A patent/CN104024650B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6193463B1 (en) * | 1999-06-30 | 2001-02-27 | Alliedsignal, Inc. | Die cast compressor housing for centrifugal compressors with a true volute shape |
| CN101245791A (en) * | 2007-02-16 | 2008-08-20 | 统一麦特考公司 | Method for die-casting compressor cylinder block |
| CN101922459A (en) * | 2010-07-28 | 2010-12-22 | 寿光市康跃增压器有限公司 | Electric composite multi-stage centrifugal compressor device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104024650A (en) | 2014-09-03 |
| EP2800905B1 (en) | 2015-09-23 |
| WO2013102978A1 (en) | 2013-07-11 |
| JP2013139755A (en) | 2013-07-18 |
| JP5369198B2 (en) | 2013-12-18 |
| EP2800905A1 (en) | 2014-11-12 |
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