CN112177973A - Compressor rotor and compressor with same - Google Patents
Compressor rotor and compressor with same Download PDFInfo
- Publication number
- CN112177973A CN112177973A CN202011010461.9A CN202011010461A CN112177973A CN 112177973 A CN112177973 A CN 112177973A CN 202011010461 A CN202011010461 A CN 202011010461A CN 112177973 A CN112177973 A CN 112177973A
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- Prior art keywords
- mounting plate
- opening
- edge
- plate
- compressor
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Classifications
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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
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
- F04D29/286—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors multi-stage rotors
-
- 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
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the field of compressors, in particular to a compressor rotor and a compressor with the same, wherein the compressor rotor comprises: a rotating shaft and a rotating wheel; the rotation wheel includes a first mounting plate formed with a first opening at a top side to allow gas to enter from the first opening and a second mounting plate formed with a second opening at a bottom side; the rotating wheel also comprises a blade arranged between the first mounting plate and the second mounting plate, and the blade comprises a top edge, a bottom edge arranged opposite to the top edge, and a left side edge and a right side edge which are respectively connected with the top edge and the bottom edge; the bottom edge is connected with the second mounting plate, and the right side edge is connected with the side plate; the second mounting panel is close to the bottom side setting, is formed with the clearance between second mounting panel and the bottom side, is formed with the air outlet between first mounting panel and the second mounting panel. The rotor of the compressor has the advantages that the turning direction of wind can be changed, the mechanism design of the compressor is not limited by the positions of an air inlet and an air outlet, and the working efficiency of the compressor can be improved.
Description
Technical Field
The invention relates to the field of compressors, in particular to a compressor rotor and a compressor with the same.
Background
The compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas, and is the heart of a refrigeration system. The refrigerating cycle power supply device sucks low-temperature and low-pressure refrigerant gas from an air inlet, drives a piston to compress the refrigerant gas through the operation of a motor, and then discharges high-temperature and high-pressure refrigerant gas to an exhaust pipe to provide power for the refrigerating cycle. The compressor generally includes a housing, and an air inlet and an air outlet provided in the housing, and gas entering from the air inlet passes through a rotor of the compressor and then is discharged from the air outlet as gas flowing at a high speed. In the prior art, an air inlet and an air outlet of a rotating wheel of a compressor rotor are in the same direction (generally, the axial direction of a rotating shaft), that is, the flow direction of air passing through the compressor rotor is not changed, so that an air inlet and an air outlet need to be arranged in the same direction when the compressor is designed, and therefore, the structural design of the compressor is limited. There are also designs in the prior art that accomplish the turning of the wind by providing a duct between the wind outlet of the rotating wheel and the air outlet of the compressor. However, the designed wind can cause deceleration in the steering process, and the working effect of the compressor is influenced.
In view of the above, there is a need to provide a novel compressor rotor and a compressor having the same, so as to solve or at least alleviate the above technical drawbacks.
Disclosure of Invention
The invention mainly aims to provide a compressor rotor and a compressor with the same, and aims to solve the technical problem that the air inlet and the air outlet of a rotating wheel of the existing compressor rotor are in the same direction, so that the structural design of the compressor is limited or the working effect of the compressor is influenced.
To achieve the above object, according to one aspect of the present invention, there is provided a compressor rotor comprising:
the rotating wheel is arranged on the rotating shaft;
the rotary wheel includes a first mounting plate including a top side, a bottom side, and a side plate connecting the top side and the bottom side, the first mounting plate being formed with a first opening at the top side to allow gas to enter from the first opening, the first mounting plate being formed with a second opening at the bottom side, the rotary shaft passing through the first opening and the second opening;
the rotating wheel further comprises blades arranged between the first mounting plate and the second mounting plate, the blades comprise a top edge, a bottom edge arranged opposite to the top edge, and a left side edge and a right side edge respectively connected with the top edge and the bottom edge, the number of the blades is multiple, the left side edges of the multiple blades are annularly arranged to form a first shaft hole, and the rotating shaft penetrates through the first shaft hole; the bottom edge is connected with the second mounting plate, and the right side edge is connected with the side plate;
the second mounting plate is arranged close to the bottom side, a gap is formed between the second mounting plate and the bottom side, and an air outlet is formed between the first mounting plate and the second mounting plate.
Further, the polylith the blade interval sets up, first mounting panel, second mounting panel and adjacent two be formed with between the blade the air outlet, the quantity of air outlet is a plurality of.
Further, first opening with the second opening is circular opening, be provided with the second shaft hole on the second mounting panel, the pivot passes the second shaft hole with the pivot is connected, the central axis of first opening, the central axis in second open-ended central axis, first shaft hole and the central axis in second shaft hole all coincide.
Further, the second mounting plate is a circular plate, the bottom side is parallel to the circular plate, the first mounting plate and the second mounting plate form an annular air outlet surrounding the rotating shaft, and the central axis of the first opening is perpendicular to the annular air outlet.
Furthermore, the diameter of the first opening is smaller than that of the second opening, the side plate is a circular side plate which connects the top side and the bottom side, and the side surface of the circular side plate is inwards recessed to form a concave surface.
Further, the blade includes preset position, the thickness of blade from the topside to preset position is the bodiness gradually, then from preset position to the base is attenuate gradually.
Further, the preset position is a position corresponding to a connection line between the center point of the left side and the center point of the right side.
Further, the rotating wheel further comprises an inner ring, the left side edges of the blades are installed on the outer wall surface of the inner ring, and the rotating shaft penetrates through the inner wall surface of the inner ring to be connected with the inner ring.
Furthermore, the number of the rotating wheels is multiple, the rotating wheels are distributed at intervals along the central axis of the rotating shaft, two top ends of the rotating shaft are respectively provided with a connecting plate, and the connecting plate is provided with a plurality of connecting holes; the rotating shaft is also provided with a plurality of mounting positions.
According to another aspect of the present invention, the present invention further provides a compressor, which includes a housing, an air inlet and an air outlet provided on the housing, and the compressor rotor as described above, wherein the first opening of the compressor rotor is disposed facing the air inlet, and the air outlet of the compressor rotor is disposed facing the air outlet.
In the above technical solution of the present invention, the compressor rotor includes: the rotating wheel is arranged on the rotating shaft; the rotation wheel includes a first mounting plate including a top side, a bottom side, and a side plate connecting the top side and the bottom side, the first mounting plate being formed at the top side with a first opening to allow gas to enter from the first opening, the first mounting plate being formed at the bottom side with a second opening through which the rotation shaft passes; the rotating wheel also comprises blades arranged between the first mounting plate and the second mounting plate, each blade comprises a top edge, a bottom edge arranged opposite to the top edge, and a left side edge and a right side edge which are respectively connected with the top edge and the bottom edge, the number of the blades is multiple, the left side edges of the multiple blades are annularly arranged to form a first shaft hole, and the rotating shaft penetrates through the first shaft hole; the bottom edge is connected with the second mounting plate, and the right side edge is connected with the side plate; the second mounting panel is close to the bottom side setting, is formed with the clearance between second mounting panel and the bottom side, is formed with the air outlet between first mounting panel and the second mounting panel. In the above scheme, the rotating shaft is driven to be installed on the rotating wheel of the rotating shaft to rotate, gas enters the rotating wheel from the first opening (air inlet), and is discharged from a gap (air outlet) formed between the bottom side of the first installation plate and the second installation plate after passing through the blades. The compressor rotor changes the trend of wind, overcomes the technical defect that the air outlet and the air inlet of a rotating wheel are in the same direction in the prior art, and has the advantages of changing the direction of the wind, enabling the mechanism design of the compressor not to be limited by the positions of an air inlet and an air outlet and improving the working efficiency of the compressor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a compressor rotor according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a compressor rotor according to an embodiment of the present invention;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a top view of FIG. 1;
fig. 5 is a schematic partial perspective view of a compressor rotor according to an embodiment of the present invention.
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
2 | |
| 21 | |
22 | |
| 23 | |
24 | First opening |
| 3 | Second mounting plate | 4 | |
| 41 | |
42 | |
| 43 | |
5 | Air outlet |
| 6 | Connecting |
61 | Connecting |
| 7 | |
8 | Rotating wheel |
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Referring to fig. 1-5, according to one aspect of the present invention, there is provided a compressor rotor comprising:
the rotary wheel device comprises a rotating shaft 1 and a rotating wheel 8 arranged on the rotating shaft 1;
the rotation wheel 8 includes a first mounting plate 2 and a second mounting plate 3, the first mounting plate 2 includes a top side 21, a bottom side 22 and a side plate 23 connecting the top side 21 and the bottom side 22, the first mounting plate 2 is formed with a first opening 24 at the top side 21 so that gas enters from the first opening 24, the first mounting plate 2 is formed with a second opening at the bottom side 22, and the rotation shaft 1 passes through the first opening 24 and the second opening;
the rotating wheel 8 further comprises a plurality of blades 4 arranged between the first mounting plate 2 and the second mounting plate 3, each blade 4 comprises a top edge 41, a bottom edge arranged opposite to the top edge 41, and a left side edge 42 and a right side edge 43 respectively connecting the top edge 41 and the bottom edge, the number of the blades 4 is multiple, the left side edges 42 of the plurality of blades 4 are annularly arranged to form a first shaft hole, and the rotating shaft 1 passes through the first shaft hole; the bottom edge is connected with the second mounting plate 3, and the right side edge 43 is connected with the side plate 23;
the second mounting plate 3 is disposed adjacent to the bottom side 22, a gap is formed between the second mounting plate 3 and the bottom side 22, and an air outlet 5 is formed between the first mounting plate 2 and the second mounting plate 3.
In the above embodiment, the rotating shaft 1 drives the rotating wheel 8 mounted on the rotating shaft 1 to rotate, and the air enters the rotating wheel 8 from the first opening 24, passes through the blades 4, and is discharged from the gap air outlet 5 formed between the bottom side 22 of the first mounting plate 2 and the second mounting plate 3. The embodiment changes the trend of wind, overcomes the technical defect that the air outlet 5 and the air inlet of the rotating wheel 8 are in the same direction in the prior art, and has the advantages of changing the direction of the wind, enabling the mechanism design of the compressor not to be limited by the positions of the air inlet and the air outlet 5, and/or improving the working efficiency of the compressor.
Further, the polylith blade 4 interval sets up, first mounting panel 2, second mounting panel 3 and adjacent two be formed with between the blade 4 air outlet 5, the quantity of air outlet 5 is a plurality of. The air enters through the opening formed between the top edges 41 of the two blades 4 and then exits through the outlet 5 between the right edges 43 of the two blades 4. As regards the number of blades 4, in the light of this embodiment, the person skilled in the art can set itself as desired without inventive effort.
Further, first opening 24 with the second opening is circular opening, be provided with the second shaft hole on the second mounting panel 3, pivot 1 passes the second shaft hole with pivot 1 is connected, the central axis of first opening 24, the central axis in second open-ended central axis, first shaft hole and the central axis in second shaft hole all coincide.
Further, the second mounting plate 3 is a circular plate, the bottom side 22 is parallel to the circular plate, the first mounting plate 2 and the second mounting plate 3 form an annular air outlet 5 around the rotating shaft 1, and the central axis of the first opening 24 is perpendicular to the annular air outlet 5. The gas is thrown out from the air outlet 5 at high speed under the action of centrifugal force after passing through the blades 4.
Further, the diameter of the first opening 24 is smaller than that of the second opening, the side plate 23 is a circular side plate connecting the top side 21 and the bottom side 22, and the side surface of the circular side plate is recessed inwards to form a concave surface. The concave surface is formed inwards, so that the resistance of the gas in the rotating wheel 8 is reduced, the working efficiency of the compressor is further improved, and the energy consumption is reduced.
Further, the blade 4 comprises a preset position, and the thickness of the blade 4 gradually increases from the top edge 41 to the preset position, and then gradually decreases from the preset position to the bottom edge. The thickness can be maximized by finite element design or computer fitting at the position where the blade 4 is most exposed to the wind to enhance the strength of the blade 4, and the blade 4 is appropriately thinned at other positions, so that the thickness of the blade 4 can be reduced, thereby reducing the weight of the load of the compressor and further reducing the energy consumption. As for the setting of the preset position, it may be a position where the central point of the left side 42 and the central point of the right side 43 are connected with each other.
Further, the rotating wheel 8 further comprises an inner ring, the left side edges 42 of the plurality of blades 4 are mounted on the outer wall surface of the inner ring, and the rotating shaft 1 penetrates through the inner wall surface of the inner ring to be connected with the inner ring. The blade 4 can be directly fixed on the rotating shaft 1, but under the condition, the blade 4 is inconvenient to maintain after being damaged, the whole compressor rotor needs to be replaced, the replacement cost of the equipment is high, and especially when a plurality of rotating wheels 8 are installed on one rotating shaft 1. And through installing blade 4 on the inner ring, inner ring detachably installs in pivot 1, when blade 4 damages the change, only need to change corresponding swiveling wheel 8 can, reduced the maintenance cost of equipment.
Furthermore, the number of the rotating wheels 8 is multiple, the multiple rotating wheels are distributed at intervals along the central axis of the rotating shaft 1, two top ends of the rotating shaft 1 are also respectively provided with a connecting plate 6, and the connecting plate 6 is provided with a plurality of connecting holes 61; the rotating shaft 1 is also provided with a plurality of mounting positions 7. The rotation wheel 8 is provided in plurality to improve the working efficiency of the compressor, and the connection plate 6 is used to mount the rotation shaft 1 at a corresponding position of the compressor. The mounting is made to include a stepped shaft and external threads, also for mounting the corresponding components.
According to another aspect of the present invention, the present invention also provides a compressor comprising a housing provided with an air inlet and an air outlet, and a compressor rotor as described above, wherein the first opening 24 of the compressor rotor is arranged facing the air inlet, and the air outlet 5 of the compressor rotor is arranged facing the air outlet. Since the compressor includes all technical solutions of all embodiments of the compressor rotor, at least all beneficial effects brought by all embodiments are achieved, and no further description is given here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical spirit of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A compressor rotor, comprising:
the rotary wheel type electric wrench comprises a rotating shaft (1) and a rotating wheel (8) arranged on the rotating shaft (1);
the rotation wheel (8) comprises a first mounting plate (2) and a second mounting plate (3), the first mounting plate (2) comprises a top side (21), a bottom side (22) and a side plate (23) connecting the top side (21) and the bottom side (22), the first mounting plate (2) is formed with a first opening (24) at the top side (21) so that gas enters from the first opening (24), the first mounting plate (2) is formed with a second opening at the bottom side (22), and the rotation shaft (1) passes through the first opening (24) and the second opening;
the rotating wheel (8) further comprises blades (4) arranged between the first mounting plate (2) and the second mounting plate (3), each blade (4) comprises a top edge (41), a bottom edge arranged opposite to the top edge (41), and a left side edge (42) and a right side edge (43) which are respectively connected with the top edge (41) and the bottom edge, the number of the blades (4) is multiple, the left side edges (42) of the multiple blades (4) are annularly arranged to form a first shaft hole, and the rotating shaft (1) penetrates through the first shaft hole; the bottom edge is connected with the second mounting plate (3), and the right side edge (43) is connected with the side plate (23);
the second mounting plate (3) is arranged close to the bottom side (22), a gap is formed between the second mounting plate (3) and the bottom side (22), and an air outlet (5) is formed between the first mounting plate (2) and the second mounting plate (3).
2. The compressor rotor as recited in claim 1, wherein a plurality of said blades (4) are arranged at intervals, said air outlets (5) are formed between said first mounting plate (2), said second mounting plate (3) and two adjacent said blades (4), and the number of said air outlets (5) is plural.
3. The compressor rotor as recited in claim 1, wherein the first opening (24) and the second opening are both circular openings, the second mounting plate (3) is provided with a second shaft hole, the rotating shaft (1) passes through the second shaft hole to be connected with the rotating shaft (1), and the central axis of the first opening (24), the central axis of the second opening, the central axis of the first shaft hole and the central axis of the second shaft hole are all coincident.
4. A compressor rotor according to claim 3, characterised in that the second mounting plate (3) is a circular plate, the bottom side (22) being arranged parallel to the circular plate, the first mounting plate (2) and the second mounting plate (3) forming an annular outlet opening (5) around the shaft (1), the central axis of the first opening (24) being perpendicular to the annular outlet opening (5).
5. -compressor rotor according to claim 3, characterised in that the diameter of the first opening (24) is smaller than the diameter of the second opening, the side plate (23) being a circular ring shaped side plate connecting the top side (21) and the bottom side (22), the side surface of the circular ring shaped side plate being recessed inwards to form a concave surface.
6. Compressor rotor according to claim 1, characterized in that the blade (4) comprises a preset position, the thickness of the blade (4) being gradually thicker from the top edge (41) towards the preset position and then gradually thinner from the preset position towards the bottom edge.
7. The compressor rotor according to claim 6, characterized in that the predetermined position is a position where the center point of the left side (42) corresponds to the line connecting the center points of the right side (43).
8. The compressor rotor according to claim 1, wherein the rotary wheel (8) further comprises an inner ring, left side edges (42) of the plurality of blades (4) are mounted on an outer wall surface of the inner ring, and the rotary shaft (1) is connected to the inner ring through an inner wall surface of the inner ring.
9. The compressor rotor as recited in claim 1, wherein the number of the rotating wheel (8) is plural, the plural rotating wheels are distributed at intervals along the central axis of the rotating shaft (1), two top ends of the rotating shaft (1) are further provided with a connecting plate (6), respectively, and the connecting plate (6) is provided with plural connecting holes (61); the rotating shaft (1) is also provided with a plurality of mounting positions (7).
10. Compressor, characterized in that it comprises a casing provided with an air inlet and an air outlet, and a compressor rotor according to any one of claims 1 to 9, the first opening (24) of which is arranged facing the air inlet and the air outlet (5) of which is arranged facing the air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011010461.9A CN112177973A (en) | 2020-09-23 | 2020-09-23 | Compressor rotor and compressor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011010461.9A CN112177973A (en) | 2020-09-23 | 2020-09-23 | Compressor rotor and compressor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112177973A true CN112177973A (en) | 2021-01-05 |
Family
ID=73955968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011010461.9A Withdrawn CN112177973A (en) | 2020-09-23 | 2020-09-23 | Compressor rotor and compressor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112177973A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202117995U (en) * | 2011-06-23 | 2012-01-18 | 海信容声(广东)冰箱有限公司 | Vortex type fan structure |
| DE102010027244A1 (en) * | 2010-07-15 | 2012-01-19 | Siemens Aktiengesellschaft | centrifugal |
| CN202251078U (en) * | 2011-08-09 | 2012-05-30 | 中国南方航空工业(集团)有限公司 | Centrifugal impeller and centrifugal compressor with same |
| CN203081787U (en) * | 2012-12-28 | 2013-07-24 | 沈阳透平机械股份有限公司 | D-type multistage high-speed air blower |
| CN103899574A (en) * | 2012-12-27 | 2014-07-02 | 南通大通宝富风机有限公司 | Free-form surface three-dimensional flow impeller of vacuum pump |
| CN206903931U (en) * | 2017-05-19 | 2018-01-19 | 段陆雨航 | Detachable impeller and blower fan |
| CN108626168A (en) * | 2018-05-09 | 2018-10-09 | 江西省凯骏实业有限公司 | A kind of air vane of high air output |
| CN109372797A (en) * | 2018-11-30 | 2019-02-22 | 深圳市商田环保科技有限公司 | A kind of impeller and the Multi-stage centrifugal fan using the impeller |
-
2020
- 2020-09-23 CN CN202011010461.9A patent/CN112177973A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010027244A1 (en) * | 2010-07-15 | 2012-01-19 | Siemens Aktiengesellschaft | centrifugal |
| CN202117995U (en) * | 2011-06-23 | 2012-01-18 | 海信容声(广东)冰箱有限公司 | Vortex type fan structure |
| CN202251078U (en) * | 2011-08-09 | 2012-05-30 | 中国南方航空工业(集团)有限公司 | Centrifugal impeller and centrifugal compressor with same |
| CN103899574A (en) * | 2012-12-27 | 2014-07-02 | 南通大通宝富风机有限公司 | Free-form surface three-dimensional flow impeller of vacuum pump |
| CN203081787U (en) * | 2012-12-28 | 2013-07-24 | 沈阳透平机械股份有限公司 | D-type multistage high-speed air blower |
| CN206903931U (en) * | 2017-05-19 | 2018-01-19 | 段陆雨航 | Detachable impeller and blower fan |
| CN108626168A (en) * | 2018-05-09 | 2018-10-09 | 江西省凯骏实业有限公司 | A kind of air vane of high air output |
| CN109372797A (en) * | 2018-11-30 | 2019-02-22 | 深圳市商田环保科技有限公司 | A kind of impeller and the Multi-stage centrifugal fan using the impeller |
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Application publication date: 20210105 |