CN108019376A - A kind of multi-stage impeller makeup of the imports - Google Patents
A kind of multi-stage impeller makeup of the imports Download PDFInfo
- Publication number
- CN108019376A CN108019376A CN201711496569.1A CN201711496569A CN108019376A CN 108019376 A CN108019376 A CN 108019376A CN 201711496569 A CN201711496569 A CN 201711496569A CN 108019376 A CN108019376 A CN 108019376A
- Authority
- CN
- China
- Prior art keywords
- impeller
- level
- makeup
- imports
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/164—Multi-stage fans, e.g. for vacuum cleaners
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of multi-stage impeller makeup of the imports, including first order impeller, second level impeller, third level impeller, shaft, every grade of impeller include blade, blade inlet edge, trailing edge, into choma, hub disk, shroud, the wheel hub of first order impeller is connected with shaft, the shroud of first order impeller is the hub disk of second level impeller, second level impeller front disc is the hub disk of third level impeller, and trailing edge is located at the radially inner side of rear dish external diameter, it is characterised in that：First order impeller, second level impeller, the air inlet area of third level impeller are different.First order impeller, second level impeller, third level impeller it is in the same plane into choma input end.Charge flow rate between level can be increased while ensureing that rear stage is pressurized than upper level, so as to fulfill increase flow, the effect of pressure.
Description
Technical field
The present invention relates to field of fluid machinery, more particularly to a kind of multi-stage impeller makeup of the imports.
Background technology
Fluid machinery is the mechanical device that fluid energy is converted mechanical energy into using fluid as working media, water pump, wind turbine,
Compressor is the common fluid machineries in field such as industry, production, life.For the fluid machinery using impeller as core（As water pump,
Wind turbine etc.）, efficiency, the performance of the structure of impeller to whole device（Such as pressure, flow）Play a crucial role.At this
In technical field, by the improvement to impeller and improve the performance of fluid machinery product by kinds of schemes demonstration be effective
, but the raising in existing product to properties of product also has very big room for improvement.Such as single multi-stage impeller, impeller into
Mouth structure is still significantly improved the flow of fluid, fluidised form at impeller inlet space.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of multi-stage impeller makeup of the imports, it is intended to
Charge flow rate between level can be increased while ensureing that rear stage is pressurized than upper level, so as to fulfill increase flow, the effect of pressure
Fruit.The multi-stage impeller is installed in the casing of centrifugal blower/air blower.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of multi-stage impeller makeup of the imports, including first order impeller, second level impeller, third level impeller, shaft, every grade of impeller are equal
Including blade, blade inlet edge, trailing edge, it is connected with shaft into choma, hub disk, shroud, the wheel hub of first order impeller, the first order
The shroud of impeller is the hub disk of second level impeller, and second level impeller front disc is the hub disk of third level impeller, after trailing edge is located at
The radially inner side of dish external diameter, it is characterised in that：The air inlet area of first order impeller, second level impeller and third level impeller is not
Together.
Wherein, first order impeller, second level impeller and third level impeller are respectively positioned on same plane into choma and input end
On.
Wherein, in radial directions, third level impeller with effective inlet height c, second level impeller with effective import
Height d, first order impeller have effective inlet height e, and effective inlet height c, d, e are different.
Wherein, effective inlet height c<d<e.
Wherein, blade inlet edge includes tilting section, segmental arc, is seamlessly transitted between tilting section and segmental arc, and tilting section is with after
It is connected on the inside of disk, segmental arc on the outside of hub disk with being connected.
Wherein, there is gap f between tilting section radial inner end and wheel hub radial outer end.
Wherein, the axial width of wheel hub is the 70%-90% of impeller axial width.
The present invention the multi-stage impeller makeup of the imports can ensure rear stage be pressurized than upper level while increase level between into
Throughput, so as to fulfill increase flow, the effect of pressure.
Brief description of the drawings
Fig. 1 is blade wheel structure figure of the present invention；
Fig. 2 is blade inlet edge structure chart of the present invention.
In figure：First order impeller 1, second level impeller 2, third level impeller 3, shaft 4, wheel hub 5, blade 11,（Blade）Before
Edge 12,（Blade）Trailing edge 13, into choma 14,24,34, hub disk 15, shroud 16, tilting section 121, segmental arc 122.
Embodiment
The present invention provides a kind of multi-stage impeller makeup of the imports, and the present invention is made further specifically below in conjunction with the accompanying drawings
It is bright.
Referring to attached drawing 1-2：The multi-stage impeller makeup of the imports includes first order impeller 1, second level impeller 2, third level impeller
3rd, shaft 4, wheel hub 5, blade 11,（Blade）Leading edge 12,（Blade）Trailing edge 13, into choma 14,24,34, hub disk 15, shroud 16,
Tilting section 121, segmental arc 122.
First order impeller 1 include blade 11,（Blade）Leading edge 12,（Blade）Trailing edge 13, into choma 14, hub disk 15, shroud
16th, wheel hub 5, wheel hub 5 couple with shaft 4.Equally, second level impeller 2, third level impeller 3 also respectively include blade,（Blade）Before
Edge,（Blade）Trailing edge, into choma 24/34, hub disk, shroud, 1 shroud 16 of first order impeller is the hub disk of second level impeller 2, second
2 shroud of level impeller is the hub disk of third level impeller 3.（Blade）Trailing edge 13 is located at the radially inner side of 15 outside diameter of hub disk.
In radial directions, third level impeller with effective inlet height c, second level impeller with effective inlet height d,
First order impeller has effective inlet height e, c be into 34 internal diameter of choma and into the height dimension between 24 outside diameter of choma, d be into
24 internal diameter of choma and into the height dimension between 14 outside diameter of choma, e be into the height gauge between 5 outside diameter of 14 internal diameter of choma and wheel hub
It is very little, c<d<E, c/d=0.7-0.9, preferably 0.8, d/e=0.85-0.95, preferably 0.9.In the axial direction, first order impeller 1,
, first order impeller 1, the second level leaf concordant/in the same plane into choma input end of second level impeller 2, third level impeller 3
Wheel 2, the import ring axial width of third level impeller 3 are sequentially reduced.
Blade inlet edge includes tilting section 121, segmental arc 122, is seamlessly transitted between tilting section 121 and segmental arc 122, tilts
Section 121 is connected with hub disk inner side/left side, and segmental arc 122 is connected with hub disk outside/right side.121 radial inner end of tilting section and wheel hub
5 radial outer ends have gap f, and the axial width of wheel hub 5 is the 70%-90% of impeller axial width.Second level impeller or the third level
121 radial inner end of tilting section of impeller into choma 14,24 radial outer ends with having gap f.
Different by the way that effective inlet height is set, blade inlet edge includes tilting section 121, segmental arc 122, can ensure
Charge flow rate between increase level while rear stage is pressurized than upper level, so as to fulfill increase flow, the effect of pressure.
The present invention air flow direction be：Air-flow is after the entrance of first order impeller inlet ring, after the acting of centrifugal blades
Radially discharge, and after the effect of auxiliary blade, the airflow path through housing enter second level impeller into choma, then through centrifugal leaf
Radially discharged after the acting of piece, and through auxiliary blade effect after, the airflow path through housing enter third level impeller into choma, then
Radially discharged after the acting of centrifuge blade.The multi-stage impeller makeup of the imports can ensure that rear stage is more same than what upper level was pressurized
Charge flow rate between Shi Zengjia grades, so as to fulfill increase flow, the effect of pressure.
The above embodiment is the description of the invention, is not limitation of the invention, any to simple transformation of the present invention
Structure afterwards belongs to protection scope of the present invention.
Claims (7)
1. a kind of multi-stage impeller makeup of the imports, including first order impeller, second level impeller, third level impeller, shaft, every grade of impeller
Include blade, blade inlet edge, trailing edge, be connected with shaft into choma, hub disk, shroud, the wheel hub of first order impeller, first
The shroud of level impeller is the hub disk of second level impeller, and second level impeller front disc is the hub disk of third level impeller, and trailing edge is located at
The radially inner side of dish external diameter afterwards, it is characterised in that：The air inlet area of first order impeller, second level impeller and third level impeller is not
Together.
A kind of 2. multi-stage impeller makeup of the imports as claimed in claim 1, it is characterised in that：First order impeller, second level impeller and
Third level impeller is respectively positioned on same plane into choma and input end.
A kind of 3. multi-stage impeller makeup of the imports as claimed in claim 2, it is characterised in that：In radial directions, third level impeller
, with effective inlet height e, have with effective inlet height d, first order impeller with effective inlet height c, second level impeller
It is different to imitate inlet height c, d, e.
A kind of 4. multi-stage impeller makeup of the imports as claimed in claim 3, it is characterised in that：The effectively inlet height c<d<e.
A kind of 5. multi-stage impeller makeup of the imports as claimed in claim 1, it is characterised in that：Blade inlet edge includes tilting section, arc
Section, seamlessly transits between tilting section and segmental arc, and tilting section on the inside of hub disk with being connected, and segmental arc on the outside of hub disk with being connected.
A kind of 6. multi-stage impeller makeup of the imports as claimed in claim 5, it is characterised in that：Tilting section radial inner end and wheel hub radial direction
There is gap f between outer end.
A kind of 7. multi-stage impeller makeup of the imports as claimed in claim 6, it is characterised in that：The axial width of wheel hub is axial for impeller
The 70%-90% of width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711496569.1A CN108019376A (en) | 2017-12-31 | 2017-12-31 | A kind of multi-stage impeller makeup of the imports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711496569.1A CN108019376A (en) | 2017-12-31 | 2017-12-31 | A kind of multi-stage impeller makeup of the imports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108019376A true CN108019376A (en) | 2018-05-11 |
Family
ID=62072417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711496569.1A Withdrawn CN108019376A (en) | 2017-12-31 | 2017-12-31 | A kind of multi-stage impeller makeup of the imports |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108019376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454434A (en) * | 2019-09-17 | 2019-11-15 | 苏州美达斯机电有限公司 | A kind of centrifugal pump multi-stage impeller structure |
-
2017
- 2017-12-31 CN CN201711496569.1A patent/CN108019376A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454434A (en) * | 2019-09-17 | 2019-11-15 | 苏州美达斯机电有限公司 | A kind of centrifugal pump multi-stage impeller structure |
| CN110454434B (en) * | 2019-09-17 | 2024-06-11 | 苏州美达斯机电有限公司 | Multistage impeller structure of centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180511 |
|
| WW01 | Invention patent application withdrawn after publication |