CN107701298B - Compressor and supercharger - Google Patents
Compressor and supercharger Download PDFInfo
- Publication number
- CN107701298B CN107701298B CN201710818678.4A CN201710818678A CN107701298B CN 107701298 B CN107701298 B CN 107701298B CN 201710818678 A CN201710818678 A CN 201710818678A CN 107701298 B CN107701298 B CN 107701298B
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- Prior art keywords
- frame
- scroll chamber
- impeller
- bolt
- compressor
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- 238000002485 combustion reaction Methods 0.000 description 14
- 239000012634 fragment Substances 0.000 description 10
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—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
-
- 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
- F04D29/422—Discharge tongues
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/31—Retaining bolts or nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/39—Retaining components in desired mutual position by a V-shaped ring to join the flanges of two cylindrical sections, e.g. casing sections of a turbocharger
Abstract
The invention provides a compressor and a supercharger, which can effectively inhibit the fracture of bolts for fastening a frame adjacent to a scroll chamber frame and the scroll chamber frame, and make the frames stably combined, wherein the compressor (10) comprises: an impeller (14), the impeller (14) being for compressing air; an air guide cylinder (16), the air guide cylinder (16) being configured to receive the impeller (14) and guide air; a scroll chamber frame (20), the scroll chamber frame (20) being disposed adjacent to the air guide cylinder (16), forming a scroll chamber (18) for guiding air passing through the air guide cylinder to the outside; a frame (22, 40), the frame (22, 40) being disposed adjacent to the scroll chamber frame (20); bolts (25, 48), the bolts (25, 48) fastening the scroll chamber frame (20) and the frame (22, 40); and a bushing (28), the bushing (28) being disposed between the head (26, 52) of the bolt (25, 48) and the scroll frame (20).
Description
The present application is a divisional application of the following applications:
application date of the original application: 30 days 06 months 2014
Application No. of the original application: 201480041368.0
The invention name of the original application: compressor and supercharger
Technical Field
The present invention relates to a compressor and a supercharger for an internal combustion engine.
Background
Conventionally, as a supercharger for compressing air supplied to an internal combustion engine, there has been used a supercharger including a compressor including: an impeller for compressing air; an air guide cylinder for receiving the impeller and guiding air; and a scroll chamber frame provided adjacent to the air guide cylinder, forming a scroll chamber for guiding air passing through the air guide cylinder to the outside.
In the supercharger described in patent document 1, when a part of the impeller bursts and scatters outward, a shock absorbing partition wall is provided between the diffusion chamber of the compressor and the pressure tank so as not to damage the pressure tank for lubricating the radial sliding bearing and prevent oil leakage.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2001-132465
However, in the compressor constituting a part of the supercharger, when the impeller is broken, the impeller fragments may scatter outward in the radial direction of the impeller and collide with the air guide duct, the frame around the air guide duct, and the like. When the impeller fragment collides with the air guide tube, the frame around the air guide tube, or the like, a tensile stress may be generated in a bolt for fastening the scroll chamber frame adjacent to the air guide tube and the frame adjacent to the scroll chamber frame, and the bolt may be broken.
In this regard, patent document 1 describes a structure in which the lubricant pressure tank is not broken when a part of the impeller is scattered as described above, but does not disclose any problem and solution regarding the breakage of the bolt due to the scattering of the impeller.
Disclosure of Invention
An object of some embodiments of the present invention is to provide a compressor and a supercharger, which can effectively suppress the breakage of bolts fastening a frame adjacent to a scroll chamber frame and the scroll chamber frame, and realize a stable connection state of the frames.
Means for solving the problems
The compressor according to several embodiments of the present invention,
(1) the disclosed device is provided with: an impeller for compressing air;
an air guide cylinder for receiving the impeller and guiding the air;
a scroll chamber frame disposed adjacent to the air guide cylinder and forming a scroll chamber for guiding air passing through the air guide cylinder to the outside;
a 1 st frame disposed adjacent to the scroll chamber frame;
a 1 st bolt fastening the scroll chamber frame and the 1 st frame; and
a bushing disposed between a head of the 1 st bolt and the scroll chamber frame.
When the impeller is broken in the compressor, the impeller fragments may scatter outward in the radial direction of the impeller and collide with the air guide duct, the frame around the air guide duct, and the like. When the impeller fragment collides with the air guide tube, the frame around the air guide tube, or the like, tensile stress may be generated in the 1 st bolt for fastening the scroll chamber frame adjacent to the air guide tube and the 1 st frame adjacent to the scroll chamber frame, and the 1 st bolt may be broken.
In contrast, according to the compressor described in (1) above, since the bushing is provided between the head portion of the 1 st bolt and the scroll chamber frame, the scroll chamber frame and the 1 st frame can be fastened using the 1 st bolt having a longer shaft portion length (neck portion length) than the case where the bushing is not provided. Therefore, the elongation amount that can be elongated can be increased without breaking the 1 st bolt when the 1 st bolt is subjected to the tensile load in the axial direction, as compared with the case where no bush is provided. Thus, even if the tensile stress due to the breakage of the impeller occurs in the 1 st bolt that fastens the scroll chamber frame and the 1 st frame as described above, the breakage of the 1 st bolt can be effectively suppressed. That is, a stable coupling state of the scroll chamber frame and the 1 st frame can be achieved.
In order to manufacture the compressor described in (1), it is not necessary to newly purchase all the components, and the bushing of the existing compressor may be added and the 1 st bolt may be replaced. That is, the compressor described in the above (1) is also advantageous in terms of ease of production.
The "1 st frame" in the compressor according to (1) includes at least the muffler frame and the bearing frame used in the embodiment of the present invention. In the compressor according to the above (1), when the 1 st bolt is a stud bolt, the head of the 1 st bolt is a nut for the stud bolt.
In several embodiments, in the compressor according to the above (1),
(2) the bushing is formed in a sleeve shape and provided so as to surround the shaft portion of the 1 st bolt,
the inner diameter of the bushing is smaller than the diameter of the head of the 1 st bolt.
According to the compressor described in (2) above, since the head portion of the 1 st bolt can be uniformly supported by the sleeve-like bush provided so as to surround the shaft portion of the 1 st bolt, even if the 1 st bolt is subjected to the tensile stress due to the breakage of the impeller as described above, the breakage of the 1 st bolt can be effectively suppressed. Therefore, a stable coupled state of the scroll chamber frame and the 1 st frame adjacent to the scroll chamber can be achieved.
In several embodiments, in the compressor according to the above (1) or (2),
(3) the size of the bushing in the axial direction of the 1 st bolt is larger than the size of the bushing in the radial direction of the 1 st bolt.
As in the compressor described in (3) above, by using the bush suitable for increasing the length of the shaft portion of the 1 st bolt, the amount of elongation that can be elongated can be easily increased without breaking the 1 st bolt when a tensile load in the axial direction is applied to the 1 st bolt.
Thus, even if the tensile stress due to the breakage of the impeller occurs in the 1 st bolt that fastens the scroll chamber frame and the 1 st frame as described above, the breakage of the 1 st bolt can be effectively suppressed. Therefore, a stable coupled state of the scroll chamber frame and the 1 st frame adjacent to the scroll chamber frame can be achieved.
In some embodiments, in the compressor according to any one of the above (1) to (3),
(4) further comprises: a muffler for reducing sound generated from the compressor,
the 1 st frame is a frame of the muffler.
According to the compressor described in the above (4), even if the tensile stress due to the breakage of the impeller as described above is generated in the 1 st bolt that fastens the frame of the muffler and the scroll chamber frame, the breakage of the 1 st bolt can be effectively suppressed. Therefore, the muffler can be effectively prevented from coming off the compressor.
In some embodiments, in the compressor according to any one of the above (1) to (4),
(5) the disclosed device is provided with: a 2 nd frame, the 2 nd frame being disposed adjacent to the scroll chamber frame;
a 2 nd bolt fastening the scroll chamber frame and the 2 nd frame; and
and a clamp configured to clamp the scroll chamber frame and the 2 nd frame.
In the compressor, when the impeller is broken, the impeller fragments may scatter outward in the radial direction of the impeller and collide with the air guide tube, the scroll chamber frame, and the like. When the impeller fragment collides with the air guide tube, the scroll chamber frame, or the like, tensile stress may be generated in the 2 nd bolt for fastening the 2 nd frame and the scroll chamber frame disposed adjacent to the scroll chamber frame, and the 2 nd bolt may be broken.
In contrast, according to the compressor described in (5), the clamp configured to clamp the scroll chamber frame and the 2 nd frame can suppress the tensile stress from occurring in the 2 nd bolt, and can effectively suppress the fracture of the 2 nd bolt. Therefore, a stable coupled state of the scroll chamber frame and the 2 nd frame adjacent to the scroll chamber frame can be achieved.
In the compressor according to the above (5), "frame 2" includes at least a muffler frame and a bearing frame for carrying out the aspect of the invention.
In several embodiments, in the compressor according to the above (5),
(6) the 2 nd frame is a bearing frame provided with a bearing portion that pivotally supports a rotating shaft of the impeller.
According to the compressor described in the above (6), even if the tensile stress due to the breakage of the impeller as described above occurs in the 2 nd bolt that fastens the scroll chamber frame and the bearing frame, the breakage of the 2 nd bolt can be effectively suppressed. Therefore, a stable coupling state of the scroll chamber frame and the bearing frame can be achieved.
In several embodiments, in the compressor according to the above (6),
(7) the scroll chamber frame includes:
a scroll chamber forming portion that forms the scroll chamber; and
a flange portion provided to extend from the scroll chamber forming portion to an outer side in a radial direction of the impeller so as to couple the scroll chamber frame and the bearing frame,
the 2 nd bolt fastens the flange portion and the bearing frame,
the jig is configured to clamp the flange portion and the bearing frame.
In a structure in which a flange portion extending from a scroll chamber forming portion to the outer side in the radial direction of an impeller is coupled to a bearing frame, it is difficult to secure a space between the flange portion and the scroll chamber forming portion, and it is difficult to provide a bush between the head portion of the 2 nd bolt and the scroll chamber frame in order to prevent the 2 nd bolt from being broken.
Even in such a case, according to the compressor described in the above (7), the occurrence of tensile stress in the 2 nd bolt can be suppressed by the jig configured to sandwich the scroll chamber frame and the bearing frame, and the breakage of the 2 nd bolt can be effectively suppressed. Therefore, a stable coupling state of the scroll chamber frame and the bearing frame can be achieved.
In several embodiments, in the compressor according to the above (7),
(8) the jig has a pressing bolt that presses the bearing frame from a side opposite to the flange portion of the scroll chamber frame.
In a structure in which a flange portion extending from a scroll chamber forming portion to the outer side in the radial direction of an impeller is coupled to a bearing frame, it is difficult to secure a space between the flange portion and the scroll chamber forming portion, and it is difficult to provide a bush between the head portion of the 2 nd bolt and the scroll chamber frame in order to prevent the 2 nd bolt from being broken.
Even in such a case, according to the compressor described in the above (8), when the pressing bolt for pressing the bearing frame from the side opposite to the flange portion of the scroll chamber frame is provided, the tensile stress generated in the 2 nd bolt can be suppressed with a simple structure, and the breakage of the 2 nd bolt can be effectively suppressed. Therefore, a stable coupling state of the scroll chamber frame and the bearing frame can be achieved with a simple structure.
(9) A supercharger according to several embodiments of the present invention includes the compressor according to any one of (1) to (8) above.
In the turbocharger according to the embodiments of the present invention, even if tensile stress is generated by breakage of the impeller, breakage of the 1 st bolt can be effectively suppressed. That is, a stable coupling state of the scroll chamber frame and the 1 st frame can be achieved.
ADVANTAGEOUS EFFECTS OF INVENTION
According to several embodiments of the present invention, it is possible to effectively suppress breakage of bolts fastening frames adjacent to a scroll chamber frame and the scroll chamber frame, and to achieve a stable coupled state of the frames.
Drawings
Fig. 1 is a schematic diagram showing an overall configuration of an internal combustion engine system according to some embodiments.
Fig. 2 is a schematic cross-sectional view of a part of a supercharger according to some embodiments.
Fig. 3 is a schematic cross-sectional view of the periphery of a bolt fastening the scroll chamber frame and the muffler frame.
Fig. 4 is a diagram showing a state in which the scroll chamber frame is deformed and tensile stress is generated in the bolt fastening the scroll chamber frame and the bearing frame.
Fig. 5 is a view of the flange portion of the scroll chamber frame and the flange portion of the bearing frame as viewed from the direction P of fig. 2.
Fig. 6 is a schematic cross-sectional view for explaining the structure of the jig according to some embodiments.
Description of the symbols
2 internal combustion engine
4 supercharger
6 turbine
8 electric generator
10 compressor
12 rotating shaft
13 silencer
14 impeller
16 air guide cylinder
17 wing
18 vortex chamber
19 vortex chamber forming part
20 scroll chamber frame
22 muffler frame
23, 24, 29, 46 flange portion
25, 48 bolts
26, 52 head
28 liner
30 inclined part
31 shaft part
32 inlet part
40 bearing frame
43 outlet part
44 bearing part
50 diffusion part
54 clamp
56 pressing bolt
100 internal combustion engine system
d1Inner diameter
d2Diameter of
d3，d4Size of
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the embodiment are not intended to limit the scope of the present invention to these unless otherwise specified, and are merely illustrative examples.
Fig. 1 is a schematic diagram showing an overall configuration of an internal combustion engine system 100 according to some embodiments.
The internal combustion engine system 100 shown in fig. 1 includes: an internal combustion engine 2, a supercharger 4 for pressurizing intake air of the internal combustion engine 2, and a generator 8 driven by a turbine 6 included in the supercharger 4.
The supercharger 4 shown in fig. 1 includes: a centrifugal compressor (compressor) 10 that pressurizes intake air of the internal combustion engine 2, a turbine 6 that is coupled to the compressor 10 via a rotary shaft 12 and is driven by exhaust gas of the internal combustion engine 2, and a muffler 13 that reduces sound generated by the compressor 10.
As described above, the turbocharger 4 shown in fig. 1 uses an exhaust turbine type turbocharger (so-called turbocharger) in which the compressor 10 is driven by the turbine 6 driven by the exhaust gas of the internal combustion engine 2. In the supercharger 4 of the other embodiment, a mechanical supercharger (so-called supercharger) may be used, in which the compressor 10 is driven by power transmitted from the output shaft of the internal combustion engine 2 via a belt or the like. Further, as the internal combustion engine 2, for example, a diesel engine, a gasoline engine, or the like can be appropriately selected.
Next, a specific configuration example of the supercharger 4 will be described below with reference to fig. 2.
Fig. 2 is a schematic cross-sectional view of a part of a supercharger 4 according to some embodiments.
The compressor 10 shown in fig. 2 comprises: an impeller 14 for compressing air, an air guide tube 16 for receiving the impeller 14 and guiding the air, a scroll chamber frame 20, and a bearing frame 40. The impeller 14 includes a hub 15 and a plurality of blades 17 provided around the hub 15. The scroll frame 20 is provided adjacent to the air guide tube 16, and the scroll frame 20 has a scroll chamber forming portion 19 forming a scroll chamber 18 for guiding air passing through the air guide tube 16 to the outside. The bearing frame 40 is provided with a bearing portion 44, and the bearing portion 44 pivotally supports the rotary shaft 12 of the impeller 14.
The muffler 13 includes a muffler frame 22 provided adjacent to the scroll chamber frame 20. The scroll frame 20 and the muffler frame 22 are formed by fastening the flange portion 23 of the scroll frame 20 and the flange portion 24 of the muffler frame 22 with bolts 25. A bush 28 (see fig. 3) is provided between the head 26 of the bolt 25 and the scroll frame 20.
The bearing frame 40 and the scroll frame 20 are fastened by bolts 48 between the flange portion 46 of the bearing frame 40 and the flange portion 29 of the scroll frame 20.
In the compressor 10 constituting a part of the supercharger 4 shown in fig. 2, when the impeller 14 is broken, the impeller fragments may scatter outward in the radial direction of the impeller 14 and collide with the air guide duct 16, the scroll frame 20, and the like.
For example, when the impeller fragment collides with the inclined portion 30 of the air guide duct 16, the inlet portion 32 of the air guide duct 16 moves toward the muffler 13 in the arrow S direction (see fig. 3) and collides with the outlet portion 43 of the muffler frame 22 due to the collision. As a result, the flange portion 24 of the muffler frame 22 moves in a direction away from the flange portion 23 of the scroll frame 20, and therefore tensile stress is generated in the bolt 25.
Even when tensile stress is generated in the bolt 25 as described above, according to the compressor 10 and the supercharger 4, since the bush 28 is provided between the head portion 26 of the bolt 25 and the scroll frame 20, the scroll frame 20 and the muffler frame 22 can be fastened using the bolt 25 in which the length of the shaft portion 31 (see fig. 3) (the length of the neck portion) is longer than in the case where the bush 28 is not provided. Therefore, when a tensile load in the axial direction is applied to the bolt 25, the elongation amount that can be elongated can be increased without breaking the bolt 25, as compared with the case where the bush 28 is not provided. Thus, even if tensile stress due to the breakage of the impeller 14 as described above occurs in the bolt 25 that fastens the scroll chamber frame 20 and the muffler frame 22, the breakage of the bolt 25 can be effectively suppressed. Therefore, the scroll chamber frame 20 and the muffler frame 22 can be stably coupled, and the muffler 13 can be effectively prevented from coming off the supercharger 4 and the compressor 10.
The bush 28 shown in fig. 3 is formed in a sleeve shape and provided so as to surround the shaft portion 31 of the bolt 25, and the inner diameter d of the bush 281Is larger than the diameter d of the head 26 of the bolt 252Is small. Therefore, since the head 26 of the bolt 25 can be uniformly supported by the bush 28, even if tensile stress due to breakage of the impeller 14 occurs in the bolt 25 as described above, breakage of the bolt 25 can be effectively suppressed.
In addition, the dimension d of the bushing 28 in the axial direction of the bolt 25 shown in fig. 33Is larger than the dimension d of the bush 28 in the radial direction of the bolt 254Is large. In this way, by using the bush 28 suitable for increasing the length of the shaft portion 31 of the bolt 25, the amount of elongation that can be elongated can be easily increased without breaking the bolt 25 when a tensile load in the axial direction is applied to the bolt 25. Thus, even if tensile stress due to the breakage of the impeller 14 as described above occurs in the bolt 25 that fastens the scroll chamber frame 20 and the muffler frame 22, the breakage of the bolt 25 can be effectively suppressed.
In fig. 3, an example in which tensile stress is generated in the bolt 25 fastening the scroll chamber frame 20 and the muffler frame 22 due to breakage of the impeller 14 is described, but tensile stress may be generated in the bolt 48 fastening the scroll chamber frame 20 and the bearing frame 40 due to breakage of the impeller 14.
For example, in the case where the diffuser 50 is clogged by the entry of the impeller fragment into the diffuser 50 of fig. 2, the impeller fragment causes the diffuser 50 to expand in the axial direction of the impeller 14. As a result, the scroll chamber frame 20 and the bearing frame receive a force in a direction away from each other, and therefore, as shown in fig. 4, the scroll chamber frame 20 deforms and a tensile stress is generated in the bolt 48.
In some embodiments, the shaft portion 53 of the bolt 48 may be made longer than the structure shown in fig. 4 by providing the bushing 28 described with reference to fig. 3 between the head portion 52 of the bolt 48 and the scroll frame 20 so that the bolt 48 is not broken by the tensile stress. However, as shown in fig. 2, since the flange portion 29 of the scroll frame 20 is provided to extend radially outward of the impeller 14 from the scroll forming portion 19, it is difficult to secure a space between the flange portion 29 and the scroll forming portion 19, and it is difficult to provide a bush between the head portion 52 of the bolt 48 and the scroll frame 20 in order to prevent the bolt 48 from being broken.
Therefore, the supercharger 4 and the compressor 10 shown in fig. 2 have the jigs 54 shown in fig. 5 and 6, and the jigs 54 are configured to clamp the scroll frame 20 and the bearing frame 40. Fig. 5 is a view of the flange portion 29 of the scroll chamber frame 20 and the flange portion 46 of the bearing frame 40 as viewed from the direction P in fig. 2, and shows the arrangement of the bolts 48 and the jigs 54. Fig. 6 is a schematic cross-sectional view for explaining the structure of the jig 54.
By using the jig 54 configured to sandwich the flange portion 29 of the scroll chamber frame 20 and the flange portion 46 of the bearing frame 40 in this manner, even in a configuration in which it is difficult to secure a sufficient space for providing the bushing between the flange portion 29 and the scroll chamber forming portion 19, it is possible to suppress the generation of tensile stress in the bolt 48 and effectively suppress the breakage of the bolt 48. Therefore, the scroll chamber frame 20 and the bearing frame 40 can be stably coupled.
The jig 54 shown in fig. 5 and 6 includes a pressing bolt 56, and the pressing bolt 56 presses the bearing frame 40 from the side opposite to the flange portion 29 of the scroll chamber frame 20. Accordingly, even when it is difficult to provide the bush between the head 52 of the bolt 48 and the scroll frame 20 for the purpose of preventing the breakage of the bolt 48 as described above, the occurrence of tensile stress in the bolt 48 can be suppressed with a simple structure, and the breakage of the bolt 48 can be effectively suppressed. Therefore, the scroll chamber frame 20 and the bearing frame 40 can be stably coupled with a simple structure. In another embodiment, a pressing bolt that presses the flange portion 29 of the scroll chamber frame 20 from the side opposite to the bearing frame 40 may be used.
In the embodiment described with reference to fig. 6, the jig 54 configured to clamp the scroll chamber frame 20 and the bearing frame 40 is exemplified, but in other embodiments, a jig configured to clamp the scroll chamber frame 20 and the muffler frame 22 may be used. This enables the scroll chamber frame 20 and the muffler frame 22 to be stably coupled to each other.
Claims (9)
1. A compressor is characterized by comprising:
an impeller for compressing air;
an air guide cylinder for receiving the impeller and guiding the air;
a scroll chamber frame disposed adjacent to the air guide cylinder and forming a scroll chamber for guiding the air passing through the air guide cylinder to the outside;
a bearing frame provided adjacent to the scroll chamber frame and provided with a bearing portion that axially supports a rotation shaft of the impeller;
a fastening bolt that fastens the scroll chamber frame and the bearing frame; and
a clamp configured to clamp the scroll chamber frame and the bearing frame,
the jig has a pressing bolt that presses the bearing frame from the side opposite to the scroll chamber frame or presses the scroll chamber frame from the side opposite to the bearing frame.
2. The compressor of claim 1,
the tip of the pressing bolt abuts against the scroll chamber frame or the bearing frame in the axial direction of the impeller to apply pressing force to the scroll chamber frame or the bearing frame in the axial direction.
3. Compressor according to claim 1 or 2,
the tip end of the pressing bolt abuts against the bearing frame in the axial direction of the impeller from the opposite side of the scroll chamber frame with respect to the bearing frame.
4. The compressor of claim 1,
the bearing frame has a flange portion extending outward in a radial direction of the impeller,
the fastening bolt fastens the scroll chamber frame and the flange portion of the bearing frame,
the jig is configured to clamp the scroll chamber frame and the flange portion of the bearing frame.
5. The compressor of claim 1,
the fastening bolt and the clamp are provided at positions different from each other in the circumferential direction of the impeller.
6. The compressor of claim 1,
the clamp has:
a first portion extending in a radial direction of the impeller along the scroll chamber frame;
a second portion extending in a radial direction of the impeller along the bearing frame; and
a third portion extending in an axial direction of the impeller in such a manner as to connect the first portion and the second portion.
7. The compressor of claim 6,
the pressing bolt is configured to penetrate the second portion from the side opposite to the first portion in the axial direction and to abut against the bearing frame.
8. The compressor of claim 1,
the fastening bolt and the pressing bolt are fixed from opposite sides to each other in the axial direction of the impeller.
9. A supercharger is characterized in that the supercharger is provided with a supercharger body,
a compressor according to any one of claims 1 to 8.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-198638 | 2013-09-25 | ||
| JP2013198638A JP6097188B2 (en) | 2013-09-25 | 2013-09-25 | Turbocharger |
| CN201480041368.0A CN105531460B (en) | 2013-09-25 | 2014-06-30 | Compressor and booster |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480041368.0A Division CN105531460B (en) | 2013-09-25 | 2014-06-30 | Compressor and booster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107701298A CN107701298A (en) | 2018-02-16 |
| CN107701298B true CN107701298B (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710818678.4A Active CN107701298B (en) | 2013-09-25 | 2014-06-30 | Compressor and supercharger |
Country Status (5)
| Country | Link |
|---|---|
| EP (2) | EP3009633B1 (en) |
| JP (1) | JP6097188B2 (en) |
| KR (1) | KR101799707B1 (en) |
| CN (1) | CN107701298B (en) |
| WO (1) | WO2015045541A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3053384B1 (en) * | 2016-06-30 | 2018-07-27 | Safran Aircraft Engines | FIXING ASSEMBLY OF A DISTRIBUTOR TO A STRUCTURAL ELEMENT OF A TURBOMACHINE |
| JP6517386B2 (en) * | 2018-02-13 | 2019-05-22 | 三菱重工業株式会社 | Centrifugal compressor and supercharger |
| JP2022057340A (en) * | 2020-09-30 | 2022-04-11 | 三菱重工マリンマシナリ株式会社 | Rotary machine and repair method for rotary machine |
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- 2014-06-30 WO PCT/JP2014/067415 patent/WO2015045541A1/en active Application Filing
- 2014-06-30 CN CN201710818678.4A patent/CN107701298B/en active Active
- 2014-06-30 EP EP14849505.4A patent/EP3009633B1/en active Active
- 2014-06-30 EP EP16205770.7A patent/EP3173630B1/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107701298A (en) | 2018-02-16 |
| EP3009633B1 (en) | 2020-02-05 |
| EP3173630B1 (en) | 2018-08-15 |
| WO2015045541A1 (en) | 2015-04-02 |
| JP2015063956A (en) | 2015-04-09 |
| EP3173630A1 (en) | 2017-05-31 |
| KR20160023893A (en) | 2016-03-03 |
| KR101799707B1 (en) | 2017-11-20 |
| EP3009633A1 (en) | 2016-04-20 |
| EP3009633A4 (en) | 2016-09-14 |
| CN105531460A (en) | 2016-04-27 |
| JP6097188B2 (en) | 2017-03-15 |
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