CN206017261U - A kind of axial flow fan vane wheel - Google Patents
A kind of axial flow fan vane wheel Download PDFInfo
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- CN206017261U CN206017261U CN201621056467.9U CN201621056467U CN206017261U CN 206017261 U CN206017261 U CN 206017261U CN 201621056467 U CN201621056467 U CN 201621056467U CN 206017261 U CN206017261 U CN 206017261U
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Abstract
A kind of axial flow fan vane wheel, including blade (1), wheel rim (2) and wheel hub (3) that radial direction is arranged from outside to inside, blade is fixed together with wheel rim periphery, and the entirety that blade is integrated casting with wheel rim and is formed, wheel hub is co-axially located at wheel rim radially inner side, the radially inner face of wheel rim is provided with a circle flange (21), flange is fixedly connected using dismountable connected mode with flange along the radially inwardly projecting of impeller, the radial outside edge of wheel hub.Impeller hub of the present utility model adopts dismountable split-type structural with wheel rim, easy for installation, simplifies casting technique, reduces cost, allows the different parts of impeller to cast respectively, greatly reduces pump vane casting defect, improve the castability of impeller, meanwhile, the thickness at each position of impeller also can be thinning, mitigates significantly the weight of impeller, reduce fan vibration, the periphery that wheel rim of the present utility model is connected with blade is spherical cambered surface, makes fan airflow more smooth, and fan efficiency improves 5～10%.
Description
Technical field
This utility model is related to ventilation installation, particularly, is related to a kind of axial flow fan vane wheel.
Background technology
With horsepower requirements more and more higher of the country to industrial equipment, current axial flow blower is just sent out towards lightweight direction
Exhibition, existing axial flow blower structure bulkier, noise be larger, how using being that casting aluminium material casting is completed, and in order to reduce into
This, uses normal sands casting process more, and the shortcoming of the technique is that materials microstructure is loose after formed product, and defect is more.
For middle-size and small-size axial flow fan vane wheel, as impeller size is little, the thinner thickness at each position of impeller, when aluminium liquid is poured into a mould
Between shorter, product material organizational structure can still meet requirement.But for large axial flow fan impeller, due to impeller size larger,
The thickness at each position of impeller is also thicker, and the aluminium liquid duration of pouring can be longer, easily causes cast aluminum impellers during moulding by casting because each
Position inhomogeneous cooling is even to cause unbalanced stress to weigh, and causes Impeller Shaping second-rate or does not meet mechanical property requirements, and impeller
Thickness will seriously increase its own weight, the light-weight design for causing impeller to be difficult to meet blower fan is required, the weightening of impeller
The vibration of blower fan can be increased.
Accordingly, it would be desirable to a kind of scheme causes axial flow blower while impeller mechanical property requirements are met, mitigate as far as possible certainly
Weight, that is, meet lightweight requirements, reduce vibration.
Chinese patent 201320437583.5 discloses a kind of impeller with Split type wheel hub, and its wheel hub is included by several
The annulus that petiole sleeve is spliced successively, coordinates on each petiole sleeve and installs a blade, program Leaf and impeller wheel body
Be also split type (being fixed together with flange sleeve and wheel disc with bolt), but the impeller parts be more, structure is numerous and diverse, install with
Safeguard inconvenient.
Accordingly, it would be desirable to a kind of scheme causes axial flow fan vane wheel while lightweight requirements are met, impeller is simplified as far as possible
Structure, and simplify as far as possible or reduce I＆M program.
Utility model content
This utility model purpose is to provide a kind of track train axial flow fan vane wheel, to solve proposition in background technology
Problem.
For achieving the above object, this utility model provides a kind of axial flow fan vane wheel, is arranged including radial direction from outside to inside
Blade 1, wheel rim 2 and wheel hub 3, the blade is fixed together with wheel rim periphery, and blade and wheel rim be integrated casting and
The entirety of formation, the wheel hub are co-axially located at wheel rim radially inner side, and the radially inner face of the wheel rim is provided with a circle flange 21,
Flange along the radially inwardly projecting of impeller, fixed using dismountable connected mode with flange and connected by the radial outside edge of wheel hub
Connect.
Further, the radial outside edge of the wheel hub is provided with the flange 314 for being fixedly connected with flange, described
The parallel portion 315 of flange 314 including radial direction outer and including location division 316, the axially extending bore in the parallel portion 315 with
Axially extending bore alignment on flange and the two by the axially stacking connections of bolt A5, realize being detachably connected for wheel hub and wheel rim,
Location division 316 is used for carrying out radial direction auxiliary positioning to wheel rim in installation process；The parallel portion 315 axially stacking with flange exists
The side of impeller air outlet is located axially at, so that during wheel rotation, parallel portion can be along the direction in opposite direction with air intake
Certain axial support force is provided and reduces the axial force suffered by bolt A5.
Further, the core wheels 4 different from 31 material of hub body, the core wheel are provided with the central shaft hole of the wheel hub
For tubular structure, the central through hole 41 of core wheel is used for connecting impeller drive shaft, and the hub body is by way of casting and wheel
Core periphery is engaged so that form the monolithic construction with molecular bond power, the material of the core wheel between hub body and core wheel
Matter intensity is more than the Material Strength of wheel rim, blade and hub body, and the material density of wheel rim, blade and hub body is respectively less than
The material density of core wheel.
Further, the periphery that the core wheel is engaged with hub body is convexly equipped with convex portion 42, and by forging type with
The recess 32 that the hub body of core wheel periphery engagement is set to be mated with convex portion in the position of corresponding convex portion, core wheel convex portion is used for
The relative displacement that axial direction occurs between core wheel and hub body is prevented, strengthens the stability of impeller.
Further, the hub body footpath and core wheel junction surface 311, wheel hub root 312, wheel hub abdomen are included from inside to outside
Plate 313 and flange 314, the core wheel junction surface are cylindrical in shape structure and are wrapped in outside core wheel, mate with the convex portion 42 on core wheel
Recess 32 be arranged on the inner radial wall of tubular structure core wheel joint portion, the wheel hub root protrudes from core wheel junction surface outer surface
And the wheel hub web arranged along wheel hub radial direction for linking, the wheel hub web is the disk-like structure of one piece of entirety
Plate, the location division 316 are arranged on the radially outer edge of wheel hub web, and the flange is with wheel hub web position along wheel hub radial direction pair
Together, the recess 32 is alignd along wheel hub radial direction with wheel hub root 312, to avoid additionally increasing wheel because being provided with recess
The thickness at core junction surface, effectively mitigates hub weight, makes the entity part of wheel hub obtain most rational utilization.
Further, the periphery that the wheel rim is connected with blade is set along wheel hub axial direction for spherical cambered surface, i.e. wheel rim
Cambered, and the point of greatest diameter of wheel rim periphery radially alignd with the flange of wheel rim inner headed face；And with flange as boundary,
The wheel rim is located at the thickness δ of impeller air inlet one end1More than the thickness δ that wheel rim is located at impeller air outlet one end2.
Further, the radius SR of the circular arc that the periphery of wheel rim radius R and the wheel rim is cutd open along wheel hub axial direction
Ratio be R：SR=1.5～2.7.
Preferably, using cast iron or cast steel, the wheel rim, blade and hub body material are using casting for the core wheel material
Aluminum.
Further, the end face of axial one end of the wheel rim is installed with dust excluding plate 6, and the dust excluding plate and impeller air intake
Mouth is located at the same side.
Further, the hand hole of the position in order to maintenance and inspection of alignment hub centre axis hole is offered on the dust excluding plate
61, dismountable cover plate 62 is installed with hand hole, and dismountable cover plate is located at dust excluding plate axially away from wheel rim one end
Outside.
Fill out at gap at gap between the dust excluding plate and wheel rim end face and between the cover plate and dust excluding plate
Filled with fluid sealant.
The preparation method of the axial flow fan vane wheel is comprised the following steps：
1) by the blade one piece casting of wheel rim and the cylindrical EDS maps of wheel rim, separately by core wheel one piece casting；
2) again core wheel is placed in hub mold, starts wheel hub of casting so that core wheel is embedded in wheel hub, wheel hub and core wheel one
Body shapes；
3) together with wheel hub is affixed to wheel rim bolt A5.
Wheel diameter described in this utility model is the radius value of (at point M) at wheel rim periphery maximum radius position.
This utility model has the advantages that：
Impeller hub of the present utility model adopts dismountable split-type structural with wheel rim, easy for installation, simplifies founder
Skill, reduces cost, and the different parts of impeller are cast respectively, pump vane casting defect can be greatly reduced, leaf is improved
The castability of wheel, meanwhile, wheel hub also can be thinning with the thickness of wheel rim, so as to mitigate significantly the weight of impeller, reduces blower fan and shakes
Dynamic.
The periphery that wheel rim of the present utility model is connected with blade is spherical cambered surface, on the one hand can make wheel rim local reduction,
Mitigate blower fan weight, on the other hand make fan airflow more smooth, this utility model is cylindric cambered surface relative to normal cylindrical face
Impeller, can make blower fan efficiency improve 5～10%.
Wheel hub of the present utility model is provided with the core wheels different from hub body material, and exists between core wheel and hub body
By casting the molecular bond power for being formed so that constitute non-removable Semi separation type structure, wheel hub master between core wheel and wheel hub
Body can adopt light material such as cast aluminium, to mitigate impeller weight, be to ensure that the reliability between whole wheel hub and impeller drive shaft connects
Connect, core wheel adopts higher the material such as cast iron or cast steel of intensity, as core wheel has enough intensity, core wheel using cast iron or cast steel
Thickness can be with thinning, the thickness at the core wheel junction surface of hub central axle bore region can also be thinning, further mitigates impeller
Weight, reduces fan vibration.
Impeller of the present utility model is provided with dust excluding plate, can effective protection impeller internal structure, extend impeller life, dust excluding plate
Relatively small hand hole is provided with, cover plate at hand hole, is covered with, the bolt of dismounting needed for can reducing simplifies maintenance process.
In addition to objects, features and advantages described above, this utility model also has other purposes, feature and excellent
Point.Below with reference to figure, this utility model is described in further detail.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used for explaining this utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the impeller main view profile of this utility model preferred embodiment；
Fig. 2 is the upward view (removing dust excluding plate and cover plate) of this utility model Fig. 1；
Fig. 3 is the wheel rim main view profile of this utility model preferred embodiment；
Fig. 4 is the hub body main view profile of this utility model preferred embodiment；
Fig. 5 is the dust excluding plate top view of this utility model preferred embodiment；
Fig. 6 is the A-A sectional views in this utility model Fig. 5；
Fig. 7 is the cover plate top view of this utility model preferred embodiment.
In figure：1- blades, 2- wheel rims, 21- flanges, 3- wheel hubs, 31- hub bodies, 311- core wheels junction surface, 312- wheel hubs
Root, 313- wheel hub webs, 314- flanges, 315- parallel portions, 316- location divisions, 32- recesses, 4- core wheels, 41- core wheels center
Through hole, 42- convex portions, 5- bolt A, 6- dust excluding plates, 61- hand holes, 62- cover plates, 63- nuts, 64- bolt Bs, 65- bolt C.
Specific embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but this utility model can be according to power
Profit requires that the multitude of different ways for limiting and covering is implemented.
Referring to a kind of axial flow fan vane wheels of Fig. 1～Fig. 7, blade 1, wheel rim 2 and the wheel hub 3 for radially arranging from outside to inside, leaf
Piece is fixed together with wheel rim periphery, and the entirety that blade is integrated casting with wheel rim and is formed, and wheel hub is co-axially located at wheel
Circle radially inner side, the axial zone line to inner headed face of wheel rim are provided with a circle flange 21 along wheel hub radial direction, and flange is along leaf
That taken turns is radially inwardly projecting, and the radial outside edge of wheel hub is fixedly connected using bolt A5 with wheel rim inner headed face.
In the present embodiment, the radial outside edge of wheel hub is provided with the flange 314 for being fixedly connected with flange, flange with
Flange is connected by bolt A5, and flange is provided with arranging along wheel hub radial direction and is superimposed along wheel hub axial direction with flange
Parallel portion 315, bolt A is located in flange and the default through hole of parallel portion after superposition and tightens and realize wheel hub and wheel rim
Be detachably connected, flange be additionally provided with along wheel hub axial direction arrange location division 316, location division 316 be used for installation process
In radial direction auxiliary positioning is carried out to wheel rim；The parallel portion 315 axially stacking with flange is presented axially in the one of impeller air outlet
Side, so that during wheel rotation, parallel portion can provide certain axial support force and reduce the axial force suffered by bolt A5.
The core wheels 4 different from 31 material of hub body are provided with the central shaft hole of wheel hub, and core wheel is tubular structure, core wheel
Central through hole 41 is used for connecting impeller drive shaft, and hub body 31 is engaged with the periphery of core wheel 4 by way of casting so that
The monolithic construction with molecular bond power is formed between hub body 31 and core wheel 4, and the Material Strength of core wheel is more than wheel rim, blade
And the Material Strength of hub body, and the material density of wheel rim, blade and hub body is respectively less than the material density of core wheel, this reality
Apply in example, 4 material of core wheel adopts cast iron, wheel rim 2, blade 1 and hub body material to adopt cast aluminium.
In the present embodiment, periphery that core wheel 4 is engaged with hub body 31 is convexly equipped with convex portion 42, and by forging type with
The recess 32 that the hub body of core wheel periphery engagement is set to be mated with convex portion in the position of corresponding convex portion 42, core wheel convex portion is used
In the relative displacement for preventing from axial direction between core wheel and hub body, strengthen the stability of impeller.
In the present embodiment, hub body radially includes core wheel junction surface 311, wheel hub root 312, wheel hub web from inside to outside
313 and flange 314, core wheel junction surface is cylindrical in shape structure and is wrapped in outside core wheel, the recess mated with the convex portion 42 on core wheel
32 inner radial walls for being arranged on tubular structure core wheel joint portion, wheel hub root protrude from core wheel junction surface outer surface and are used for being connected
Along the wheel hub web that wheel hub radial direction is arranged, wheel hub web is the disk-like structure plate of one piece of entirety, the location division 316 of flange
The radially outer edge of wheel hub web is arranged on, flange is alignd along wheel hub radial direction with wheel hub web and the two thickness is equal, referring to
Fig. 1, flange 21 are flushed near the surface of air inlet one end with wheel hub web 313 near the surface of air inlet one end.Recess 32 with
Wheel hub web 313 and wheel hub root align along wheel hub radial direction so that recess is alignd along wheel hub radial direction with wheel hub root,
On the one hand the intensity of impeller is fully ensured that, on the other hand avoids additionally increasing the thickness at core wheel junction surface because being provided with recess
Degree, effectively mitigates hub weight, makes the entity part of wheel hub 3 obtain most rational utilization, material-saving.
Referring to Fig. 1 and Fig. 3, in the present embodiment, wheel rim 2 and the periphery that blade 1 is connected are spherical cambered surface, the present embodiment
In, impeller wheel rim radius R=536mm, the radius SR=280mm of the circular arc that spherical cambered surface is cutd open along wheel hub axial direction, and take turns
Point of greatest diameter M of circle periphery is located at impeller with flange 21 and radially aligns positioned at the surface of air outlet side, in Fig. 1
Flange 21 is located at the upper surface that the surface of impeller air outlet side is flange, and the upper surface of flange is also folded with parallel portion 315
The one side of conjunction；And with flange 21 as boundary, wheel rim is located at the thickness δ of impeller air inlet one end1Impeller air outlet is located at more than wheel rim
The thickness δ of one end2, in the present embodiment, δ1=20mm, δ2=12mm；.
In the present embodiment, the end face of axial one end of wheel rim is installed with dust excluding plate 6, and dust excluding plate 6 and leaf by bolt B 64
Wheel air inlet is located at the same side.Dust excluding plate is mainly used in preventing pollutant from entering in impeller, particularly protects core wheel, so as to improve
Impeller antifouling capacity, improves impeller service life.
In the present embodiment, the position hand hole in order to maintenance and inspection of alignment hub centre axis hole is offered on dust excluding plate
61, dismountable cover plate 62 is installed with hand hole, and dismountable cover plate is axially distant from the outer of wheel rim one end positioned at dust excluding plate
Side.
In the present embodiment, dust excluding plate through-thickness is fixedly welded with nut 63, dust excluding plate on the inside of wheel rim one end
Through hole corresponding with nut is provided with, cover plate is detachably mounted to hand hole by passing through through hole and screwing in the bolt C65 of nut
Place.
As the bolt B 64 that dust excluding plate is installed is more, inconvenience is removed, by taking fixing bolt C65 apart relatively
Few cover plate 62 is overhauled to impeller, can carry significantly the overhaul efficiency for doing impeller.
Filled with sealing at gap at gap between dust excluding plate and wheel rim end face and between cover plate and dust excluding plate
Glue (not shown).
The preparation method of axial flow fan vane wheel is comprised the following steps：
1) by the blade one piece casting of wheel rim and the cylindrical EDS maps of wheel rim, separately by core wheel one piece casting；
2) again core wheel is placed in hub mold, starts wheel hub of casting so that core wheel is embedded in wheel hub, wheel hub and core wheel one
Body shapes；
3) together with wheel hub is affixed to wheel rim bolt A5.
The axial flow fan vane wheel of the present embodiment and each parameter of the axial flow fan vane wheel of comparative example 1 and comparative example 2 and effect pair
Such as table 1：
Table 1
As can be seen from Table 1 relative to wheel rim and the impeller (comparative example 1) of wheel hub integrally casting, impeller of the present utility model
Weight saving about 30%, due to weight saving, the centrifugal force during wheel rotation reduces, to the impact of Blower Housing also therewith
Reduce, through actual measurement, under identical rotating speed, blower fan body maximum vibration amplitude about reduces 50%, can greatly reduce blower components
Loss, extends fan life；
As wheel rim periphery is spherical cambered surface, fan airflow can be made more smooth, fan efficiency improves 9%, and blower fan is imitated
While rate is improved, noise also reduces 3.54%.
Relative to core wheel and the impeller (comparative example 2) of wheel hub integrally casting shaping, impeller weight of the present utility model mitigates
About 17.6%, using a period of time after, in comparative example 2, the maximum vibration amplitude of impeller by 2.5 increases to 3.5, due to wheel
Core is cast aluminium, after core wheel is connected with motor driving shaft, it is easier to weares and teares and produces gap, declines assembly precision, causes blower fan
Oscillation Amplitude gradually strengthens, and impeller life can also be decreased.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.All of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements that is made etc. are should be included within protection domain of the present utility model.
Claims (10)
1. a kind of axial flow fan vane wheel, it is characterised in that including blade (1), wheel rim (2) and wheel hub that radial direction is arranged from outside to inside
(3), the blade is fixed together with wheel rim periphery, and the entirety that blade is integrated casting with wheel rim and is formed, the wheel
Hub is co-axially located at wheel rim radially inner side, and the radially inner face of the wheel rim is provided with a circle flange (21), and flange is along the footpath of impeller
To inwardly projecting, the radial outside edge of wheel hub is fixedly connected using dismountable connected mode with flange.
2. a kind of axial flow fan vane wheel according to claim 1, it is characterised in that the radial outside edge of the wheel hub sets
Have the flange (314) for being fixedly connected with flange, described flange (314) include the parallel portion (315) of radial direction outer and
In interior location division (316), the axially extending bore on parallel portion (315) aligns with the axially extending bore on flange and the two passes through
The axially stacking connections of bolt A (5), realize that being detachably connected for wheel hub and wheel rim, location division (316) are used in installation process to wheel
Circle carries out radial positioning；Axially stacking with flange parallel portion (315) are presented axially in the side of impeller air outlet, with
During making wheel rotation, parallel portion can provide certain axial support force and reduce the axial force suffered by bolt A (5).
3. a kind of axial flow fan vane wheel according to claim 1, it is characterised in that be provided with the central shaft hole of the wheel hub
The core wheel (4) different from hub body (31) material, the core wheel is tubular structure, and the central through hole (41) of core wheel is used for connecting
Impeller drive shaft, the hub body are engaged with core wheel periphery by way of casting so that between hub body and core wheel
The monolithic construction with molecular bond power is formed, the Material Strength of the core wheel is more than the material of wheel rim, blade and hub body
Intensity, and the material density of wheel rim, blade and hub body is respectively less than the material density of core wheel.
4. a kind of axial flow fan vane wheel according to claim 3, it is characterised in that the core wheel is engaged with hub body
Periphery is convexly equipped with convex portion (42), and the hub body engaged with core wheel periphery by forging type is in the position of corresponding convex portion
It is set to the recess (32) mated with convex portion.
5. a kind of axial flow fan vane wheel according to claim 4, it is characterised in that the hub body is radially from inside to outside
Including core wheel junction surface (311), wheel hub root (312), wheel hub web (313) and flange (314), the core wheel junction surface is in
Tubular structure is simultaneously wrapped in outside core wheel, and the recess (32) mated with the convex portion (42) on core wheel is arranged on tubular structure core wheel and is combined
The inner radial wall in portion, the wheel hub root protrude from core wheel junction surface outer surface and arrange along wheel hub radial direction for linking
The wheel hub web, the wheel hub web are the disc-shaped structure plate of one piece of entirety, and the location division of the flange is arranged on wheel
The radially outer edge of hub web, the flange are alignd along wheel hub radial direction with wheel hub web, and the recess is with wheel hub root along wheel
Hub radial direction is alignd.
6. a kind of axial flow fan vane wheel according to any one in Claims 1 to 5, it is characterised in that the wheel rim with
The periphery that blade is connected is that spherical cambered surface, i.e. wheel rim are provided with radian along wheel hub axial direction, and the maximum of wheel rim periphery is straight
Footpath point is radially alignd with the flange of wheel rim inner headed face；And with flange as boundary, the wheel rim is located at impeller air inlet one end
Thickness δ1More than the thickness δ that wheel rim is located at impeller air outlet one end2.
7. a kind of axial flow fan vane wheel according to claim 6, it is characterised in that wheel rim radius R is outer with the wheel rim
The ratio of the radius SR of the circular arc that disc is cutd open along wheel hub axial direction is R：SR=1.5～2.7.
8. a kind of axial flow fan vane wheel according to any one in Claims 1 to 5, it is characterised in that the wheel core
Using cast iron or cast steel, the wheel rim, blade and hub body material adopt cast aluminium to matter.
9. a kind of axial flow fan vane wheel according to any one in Claims 1 to 5, it is characterised in that the wheel rim
The end face of axial one end is installed with dust excluding plate (6), and the dust excluding plate is located at the same side with impeller air inlet.
10. a kind of axial flow fan vane wheel according to claim 9, it is characterised in that offer alignment on the dust excluding plate
Hand hole (61) of the position of hub centre axis hole in order to maintenance and inspection, is installed with dismountable cover plate (62), and institute at hand hole
State the outside that dismountable cover plate is axially distant from wheel rim one end positioned at dust excluding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621056467.9U CN206017261U (en) | 2016-09-14 | 2016-09-14 | A kind of axial flow fan vane wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621056467.9U CN206017261U (en) | 2016-09-14 | 2016-09-14 | A kind of axial flow fan vane wheel |
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| CN206017261U true CN206017261U (en) | 2017-03-15 |
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ID=58260637
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131151A (en) * | 2017-06-23 | 2017-09-05 | 广东美的制冷设备有限公司 | Wind wheel, blower fan and refrigeration plant |
| CN107816454A (en) * | 2016-09-14 | 2018-03-20 | 株洲联诚集团有限责任公司 | A kind of axial flow fan vane wheel |
| KR20210101949A (en) * | 2020-02-11 | 2021-08-19 | 엘지전자 주식회사 | Impeller and motor having the impeller |
-
2016
- 2016-09-14 CN CN201621056467.9U patent/CN206017261U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816454A (en) * | 2016-09-14 | 2018-03-20 | 株洲联诚集团有限责任公司 | A kind of axial flow fan vane wheel |
| CN107131151A (en) * | 2017-06-23 | 2017-09-05 | 广东美的制冷设备有限公司 | Wind wheel, blower fan and refrigeration plant |
| KR20210101949A (en) * | 2020-02-11 | 2021-08-19 | 엘지전자 주식회사 | Impeller and motor having the impeller |
| KR102323852B1 (en) | 2020-02-11 | 2021-11-09 | 엘지전자 주식회사 | Impeller and motor having the impeller |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230629 Address after: No. 66 and 68 Liancheng Road, Shifeng District, Zhuzhou City, Hunan Province, 412000 Patentee after: HUNAN LINCE ROLLING STOCK EQUIPMENT Co.,Ltd. Address before: 412001 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee before: ZHUZHOU LINCE GROUP Co.,Ltd. |