CN113623244A - Axial fan with double laminated blades - Google Patents
Axial fan with double laminated blades Download PDFInfo
- Publication number
- CN113623244A CN113623244A CN202110830118.7A CN202110830118A CN113623244A CN 113623244 A CN113623244 A CN 113623244A CN 202110830118 A CN202110830118 A CN 202110830118A CN 113623244 A CN113623244 A CN 113623244A
- Authority
- CN
- China
- Prior art keywords
- arc
- blade
- double
- fan
- blades
- 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.)
- Pending
Links
- 241000883990 Flabellum Species 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
- F04D29/386—Skewed blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/051—Axial thrust balancing
- F04D29/0516—Axial thrust balancing balancing pistons
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- 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
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/662—Balancing of 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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a double-laminated blade axial flow fan which comprises a fan assembly, wherein the fan assembly comprises a middle connecting piece and double laminated blades, the double laminated blades comprise a first connecting blade, a second connecting blade and an arc connecting sheet, the arc connecting sheet comprises a first connecting section, a middle connecting section and a second connecting section, the arc connecting sheet is in an N or S shape, the first connecting blade is provided with a first arc tail end, and the second connecting blade is provided with a second arc tail end. The design of adopting two folding blades makes the fan blade balance stability when the operation, powerful wind pressure reduces the unbalance amount of fan blade greatly, and the arc of N or S form links up with the afterbody of first connecting leaf, second connecting leaf, reduces the wind and cuts the resistance to reduce the vibration that the fan produced, reduce fan moving bulk noise, noise reduction when can improve wind-force wind pressure, the problem of the noise reduction when having solved unable lifting amount of wind, wind pressure.
Description
Technical Field
The invention relates to the field of radiators, in particular to a double-laminated blade axial flow fan.
Background
At present, in the electronic industry, the heat generated by electronic components during operation is immeasurable, in particular to an electronic chip which grasps the operation condition of the whole electronic system; the heat energy can cause serious damage to the components themselves, and can also accelerate the aging of peripheral devices, thereby reducing the service life of the peripheral devices. The radiator can reduce the temperature of the element, and the fan is used as a commonly used active radiating element in a radiating system and is indispensable in the radiator; it plays an important role in the whole heat dissipation process; therefore, the performance of the fan is directly related to the heat-clearing performance of the radiator.
However, the conventional heat sink has the following drawbacks:
1. in a heat radiation fan in a traditional heat radiator, fan blades are used as main material parts in the fan to play a very important role, and the inlet and outlet directions of air flow are parallel to the axial direction of the fan blades; most of the fan blade structures of the existing axial flow fan are sickle blade structures, and the common thin fan is difficult to overcome the large-diameter multi-blade structure;
2. in the design of the blade shape of the fan blade, the key problem of design is to enhance the balance of the fan blade in order to achieve larger air volume and air pressure; the method generally takes large blades and small blades as main components, so that although the air volume advantage is improved a lot, the air pressure under the same noise is difficult to improve; therefore, how to increase the number of the blades of the fan blades, and the blades are not deformed and are outwards expanded during operation to form the main problem of fan blade design, and the fan in the prior art cannot reduce noise while improving air volume and air pressure.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide an axial flow fan with double laminated blades, which can solve the problem that noise cannot be reduced while the air volume and the air pressure are increased.
One of the purposes of the invention is realized by adopting the following technical scheme:
a double-laminated blade axial flow fan comprises a fan assembly, wherein the fan assembly comprises a middle connecting piece and a double-laminated blade fixedly connected with the middle connecting piece, the double-laminated blade comprises a first connecting blade, a second connecting blade and an arc-shaped connecting sheet, the arc-shaped connecting sheet comprises a first connecting section, a middle connecting section and a second connecting section, two ends of the middle connecting section are respectively connected with the first connecting section and the second connecting section, the first connecting section is fixedly connected with the tail of the first connecting blade, and the second connecting section is fixedly connected with the tail of the second connecting blade; the arc links up the piece and is N or S form, first connection leaf is provided with first arc tail end, the second connection leaf is provided with second arc tail end, first linking section with first arc tail end parallel and level, the second link up the section with second arc tail end parallel and level.
Further, the number of the double-layer blades is 2N +1, wherein N is a positive integer.
Further, a double-blade gap is formed between the first connecting blade and the second connecting blade.
Furthermore, the upper end and the lower end of the arc-shaped connecting sheet are respectively provided with an upper side sunken position and a lower side sunken position.
Further, the second arc-shaped tail end forms a first arc-shaped curve along the vertical projection of the maximum outer diameter, the first connecting section forms a first connecting curve along the vertical projection of the maximum outer diameter, and the first connecting curve is superposed with the first arc-shaped curve.
Further, the first arc-shaped tail end forms a second arc-shaped curve along the vertical projection of the maximum outer diameter position, the second connecting section forms a second connecting curve along the vertical projection of the maximum outer diameter position, and the second connecting curve is superposed with the second arc-shaped curve.
Further, the middle connecting piece is disc-shaped, and the double-layer blades are arranged on the side of the middle connecting piece in a surrounding mode.
Further, the thickness of the middle part of the first connecting blade is larger than that of the side edge.
Further, the thickness of the middle part of the second connecting leaf is larger than that of the side edge.
Further, the double-laminated-blade axial flow fan further comprises a bottom connecting piece, and the bottom connecting piece is connected with the middle connecting piece.
Compared with the prior art, the invention has the beneficial effects that:
the arc-shaped connecting piece comprises a first connecting section, a middle connecting section and a second connecting section, wherein two ends of the middle connecting section are respectively connected with the first connecting section and the second connecting section, the first connecting section is fixedly connected with the tail of the first connecting leaf, and the second connecting section is fixedly connected with the tail of the second connecting leaf; the arc links up the piece and is N or S form, first connection leaf is provided with first arc tail end, the second connection leaf is provided with second arc tail end, first linking section with first arc tail end parallel and level, the second link up the section with second arc tail end parallel and level. Adopt first connecting leaf, the second connecting leaf, the cooperation of arc armature plate forms the design of two blade of folding, make the balanced stability of flabellum when the operation, powerful wind pressure, the unbalance amount of flabellum reduces greatly, the arc armature plate and the first connecting leaf of N or S form, the afterbody of second connecting leaf links up, reduce the wind and cut the resistance, thereby the vibration that the fan produced has been reduced, reduce fan moving noise overall, the noise reduction when can improving wind-force wind pressure, the problem that can't be promoting the amount of wind, the noise reduction when the wind pressure has been solved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of a preferred embodiment of a dual-blade axial fan in accordance with the present invention;
FIG. 2 is a perspective view of the dual blade axial flow fan of FIG. 1;
FIG. 3 is another perspective view of the dual blade axial fan shown in FIG. 1;
FIG. 4 is a perspective view of a double-stacked blade of the double-stacked blade axial flow fan shown in FIG. 1;
FIG. 5 is a perspective view of the double stacked vane of FIG. 4;
FIG. 6 is another perspective view of the double stacked vane of FIG. 4;
FIG. 7 is a further perspective view of the dual blade axial fan of FIG. 1;
FIG. 8 is a partial perspective view of the dual blade axial fan of FIG. 1;
FIG. 9 is another partial perspective view of the dual blade axial fan shown in FIG. 1.
In the figure: 10. a fan assembly; 11. a middle connecting piece; 12. double-folding blades; 121. a first connecting leaf; 1211. a first arcuate tail end; 122. a second connecting leaf; 1221. a second arcuate tail end; 123. an arc-shaped connecting piece; 1231. a first engagement section; 1232. a middle joining section; 1233. a second engagement section; 1234. the upper side is sunken; 1235. a lower side recessed position; 20. a bottom connector.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 9, a dual-blade axial flow fan includes a fan assembly 10, the fan assembly 10 includes a middle connecting member 11, and a dual-blade 12 fixedly connected to the middle connecting member 11, the dual-blade 12 includes a first connecting blade 121, a second connecting blade 122, and an arc-shaped connecting piece 123, the arc-shaped connecting piece 123 includes a first connecting section 1231, a middle connecting section 1232, and a second connecting section 1233, two ends of the middle connecting section 1232 are respectively connected to the first connecting section 1231 and the second connecting section 1233, the first connecting section 1231 is fixedly connected to a tail of the first connecting blade 121, and the second connecting section 1233 is fixedly connected to a tail of the second connecting blade 122; the arc-shaped connecting piece 123 is N-shaped or S-shaped, the first connecting leaf 121 is provided with a first arc-shaped tail end 1211, the second connecting leaf 122 is provided with a second arc-shaped tail end 1221, the first connecting section 1231 is flush with the first arc-shaped tail end 1211, and the second connecting section 1233 is flush with the second arc-shaped tail end 1221. Adopt first connecting leaf 121, second connecting leaf 122, the cooperation of arc connection piece 123 forms the design of double-lap blade, make the balanced stability of flabellum when the operation, powerful wind pressure, the unbalance amount of flabellum reduces greatly, N or S-shaped arc connection piece 123 links up with first connecting leaf 121, the afterbody of second connecting leaf 122, reduce the wind and cut the resistance, thereby the vibration that the fan produced has been reduced, reduce fan moving bulk noise, noise reduction when can improving wind-force wind pressure, the problem that can't promote at the amount of wind, noise reduction when the wind pressure has been solved.
Preferably, the number of the double-stacked blades 12 is 2N +1, where N is a positive integer. Such as 3, 5, 7, 11 sets of overlapped leaves, etc.; the total number of the blades is even number, for example, the total number of the blades of the corresponding 3, 5, 7 and 11 sets of stacked blades is 6, 10, 14 and 22 blades.
Preferably, a double-leaf gap is formed between the first connecting leaf 121 and the second connecting leaf 122. The upper end and the lower end of the arc-shaped connecting piece 123 are respectively provided with an upper side sunken position 1234 and a lower side sunken position 1235.
Preferably, the second arc-shaped tail end 1221 forms a first arc-shaped curve along a vertical projection at the maximum outer diameter, and the first connecting section 1231 forms a first connecting curve along a vertical projection at the maximum outer diameter, where the first connecting curve coincides with the first arc-shaped curve. The first arc-shaped tail 1211 forms a second arc-shaped curve along the vertical projection at the maximum outer diameter, and the second connecting section 1233 forms a second connecting curve along the vertical projection at the maximum outer diameter, and the second connecting curve is overlapped with the second arc-shaped curve.
Preferably, the middle connector 11 is disc-shaped, and the double-stacked blades 12 are arranged around the side of the middle connector 11. The thickness of the middle of the first connecting blade 121 is greater than that of the lateral side. The thickness of the middle portion of the second connecting blade 122 is greater than that of the side edges. The double laminated blade axial flow fan further comprises a bottom connector 20, and the bottom connector 20 is connected with the middle connector 11. Whole device compact structure, novel structure, design benefit, the suitability is strong, the facilitate promotion.
The purpose of the adopted double-blade overlapped blade group design is as follows: the blade folding design ensures the balance stability and strong wind pressure of the fan blades during operation, and greatly reduces the unbalance of the fan blades; the design that two blade end side face "N" or "S" type semicircle ending are even, reduce the wind and cut the resistance, thereby reduced the vibration that the fan produced, reduced fan moving noise, thereby improved 15% than traditional flabellum rotational speed under the same noise, wind speed wind pressure performance promotes greatly, experimental data shows, wind speed is equivalent to under the same noise has promoted 35%, the wind pressure is equivalent to under the same noise has promoted 39% than under the same noise. The heat-clearing performance of the same radiator and the same heat source is greatly improved compared with that of the traditional fan blades under the same module noise.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A dual-laminated-blade axial-flow fan comprising a fan assembly, wherein:
the fan assembly comprises a middle connecting piece and a double-stack blade fixedly connected with the middle connecting piece, the double-stack blade comprises a first connecting blade, a second connecting blade and an arc connecting piece, the arc connecting piece comprises a first connecting section, a middle connecting section and a second connecting section, two ends of the middle connecting section are respectively connected with the first connecting section and the second connecting section, the first connecting section is fixedly connected with the tail of the first connecting blade, and the second connecting section is fixedly connected with the tail of the second connecting blade;
the arc links up the piece and is N or S form, first connection leaf is provided with first arc tail end, the second connection leaf is provided with second arc tail end, first linking section with first arc tail end parallel and level, the second link up the section with second arc tail end parallel and level.
2. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the number of the double-layer blades is 2N +1, wherein N is a positive integer.
3. The axial flow fan with double laminated blades as claimed in claim 1, wherein: a double-blade gap is formed between the first connecting blade and the second connecting blade.
4. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the upper end and the lower end of the arc-shaped connecting sheet are respectively provided with an upper side sunken position and a lower side sunken position.
5. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the second arc tail end forms a first arc curve along the vertical projection of the maximum outer diameter position, the first connecting section forms a first connecting curve along the vertical projection of the maximum outer diameter position, and the first connecting curve is superposed with the first arc curve.
6. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the first arc tail end forms a second arc curve along the vertical projection of the maximum outer diameter position, the second connection section forms a second connection curve along the vertical projection of the maximum outer diameter position, and the second connection curve is superposed with the second arc curve.
7. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the middle connecting piece is disc-shaped, and the double-layer blades are arranged on the side part of the middle connecting piece in a surrounding mode.
8. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the thickness of the middle part of the first connecting leaf is larger than that of the side edge.
9. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the thickness of the middle part of the second connecting leaf is larger than that of the side edge.
10. The axial flow fan with double laminated blades as claimed in claim 1, wherein: the dual-blade axial flow fan further includes a bottom connector connected to the middle connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830118.7A CN113623244A (en) | 2021-07-22 | 2021-07-22 | Axial fan with double laminated blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830118.7A CN113623244A (en) | 2021-07-22 | 2021-07-22 | Axial fan with double laminated blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113623244A true CN113623244A (en) | 2021-11-09 |
Family
ID=78380514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110830118.7A Pending CN113623244A (en) | 2021-07-22 | 2021-07-22 | Axial fan with double laminated blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113623244A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551927U (en) * | 1978-06-20 | 1980-01-08 | ||
| US20020127109A1 (en) * | 2001-03-09 | 2002-09-12 | Minebea Co., Ltd. | Axial flow fan motor |
| KR20040033733A (en) * | 2002-10-15 | 2004-04-28 | 엘지전자 주식회사 | Cooling fan for motor |
| CN202612203U (en) * | 2011-10-21 | 2012-12-19 | 立原家电股份有限公司 | Blade structure and ceiling fan with same |
| CN104340348A (en) * | 2013-07-31 | 2015-02-11 | 应用热流分析中心股份有限公司 | Composite propeller blade structure |
| KR20200040569A (en) * | 2018-10-10 | 2020-04-20 | 오텍캐리어 주식회사 | Fan for Noise and Vibration Reduction and Air Conditioner with the Same |
| CN216306268U (en) * | 2021-07-22 | 2022-04-15 | 广州龙辉电子科技有限公司 | Axial fan with double laminated blades |
-
2021
- 2021-07-22 CN CN202110830118.7A patent/CN113623244A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551927U (en) * | 1978-06-20 | 1980-01-08 | ||
| US20020127109A1 (en) * | 2001-03-09 | 2002-09-12 | Minebea Co., Ltd. | Axial flow fan motor |
| KR20040033733A (en) * | 2002-10-15 | 2004-04-28 | 엘지전자 주식회사 | Cooling fan for motor |
| CN202612203U (en) * | 2011-10-21 | 2012-12-19 | 立原家电股份有限公司 | Blade structure and ceiling fan with same |
| CN104340348A (en) * | 2013-07-31 | 2015-02-11 | 应用热流分析中心股份有限公司 | Composite propeller blade structure |
| KR20200040569A (en) * | 2018-10-10 | 2020-04-20 | 오텍캐리어 주식회사 | Fan for Noise and Vibration Reduction and Air Conditioner with the Same |
| CN216306268U (en) * | 2021-07-22 | 2022-04-15 | 广州龙辉电子科技有限公司 | Axial fan with double laminated blades |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216306268U (en) | Axial fan with double laminated blades | |
| CN201116540Y (en) | Fan blade | |
| TWI512200B (en) | Impeller | |
| US7959413B2 (en) | Fan and impeller thereof | |
| CN113623244A (en) | Axial fan with double laminated blades | |
| CN107781213A (en) | A kind of circulating fan and its blade structure | |
| JPH05126228A (en) | Coreless torque converter | |
| CN114233679B (en) | Fan with fan body | |
| CN100387849C (en) | Centrifugal fan with multi-layer impeller | |
| CN101008398B (en) | Fan and its impeller | |
| CN210829595U (en) | Vertical axis wind turbine blade, vertical axis wind wheel and vertical axis wind turbine | |
| CN213298330U (en) | Parallel lapped fan structure | |
| CN104047883B (en) | The collection wind sheet of a kind of three-dimensional flow blower fan and three-dimensional flow blower fan | |
| CN220956158U (en) | Fan blade mixed flow structure and fan | |
| CN216714801U (en) | Impeller for fan | |
| CN216714800U (en) | Fan wheel for electronic product | |
| CN219220520U (en) | Impeller structure and precooling turbine engine comprising same | |
| CN217080873U (en) | Impeller | |
| CN221354014U (en) | Motor high-performance stator punching sheet made of environment-friendly material | |
| CN212774939U (en) | Static blade structure of high-speed fan | |
| CN220706033U (en) | Improved structure of air collecting fan | |
| CN209184348U (en) | Fan motor with cover | |
| CN103967817B (en) | A kind of 360 ° of fans of low noise | |
| CN109695583A (en) | Fan | |
| CN220890575U (en) | Reinforced forward-tilting impeller |
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 |