CN114382725A - Fan blade and manufacturing method thereof - Google Patents
Fan blade and manufacturing method thereof Download PDFInfo
- Publication number
- CN114382725A CN114382725A CN202011116426.5A CN202011116426A CN114382725A CN 114382725 A CN114382725 A CN 114382725A CN 202011116426 A CN202011116426 A CN 202011116426A CN 114382725 A CN114382725 A CN 114382725A
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- CN
- China
- Prior art keywords
- fan blade
- rough coating
- microns
- fan
- coating
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- 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
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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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/12—Applying particulate materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/02—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
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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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
Abstract
The invention discloses a fan blade and a manufacturing method thereof. The surface of the fan blade is provided with a rough coating. The rough coating has a plurality of recessed regions. The maximum depression depth of the depression region is between 50 microns and 130 microns.
Description
Technical Field
The present invention relates to a fan blade and a method for manufacturing the same, and more particularly, to a fan blade having a rough coating layer on a surface thereof and a method for manufacturing the same.
Background
With the continuous progress of technology, the development of various electronic products is faster. For example, portable phones, head-mounted display devices, etc. have relatively high performance and generate relatively more heat during operation. Therefore, how to improve the heat dissipation efficiency of the electronic device to maintain normal operation and avoid the user from feeling high temperature is an important research and development direction.
Disclosure of Invention
The invention aims at a fan blade and a manufacturing method thereof, and can solve the problem of poor heat dissipation efficiency of an electronic device.
According to an embodiment of the present invention, the surface of the fan blade has a rough coating. The rough coating has a plurality of recessed regions. The maximum depression depth of the depression region is between 50 micrometers (μm) and 130 micrometers.
In an embodiment according to the invention, the arithmetic average roughness (Ra) of the rough coating is between 1.9 and 5.9 micrometers.
In an embodiment in accordance with the invention, the average value of the depression depth of the depression region is between 35 and 65 micrometers.
In an embodiment according to the invention, the rough coating is a powder coating layer.
In an embodiment according to the invention, the fan blade is a centrifugal fan blade.
In an embodiment according to the invention, the maximum recess depth of the recessed area is more than 10% of the thickness of the fan blade.
According to an embodiment of the present invention, a method for manufacturing fan blades includes the following steps. A fan blade is provided. A rough coating is formed on the surface of the fan blade. The rough coating is formed to have a plurality of depressed regions. The maximum depression depth of the depression region is between 50 microns and 130 microns.
In an embodiment according to the invention, the method of forming a rough coating comprises powder coating.
In an embodiment according to the present invention, a method of forming a rough coating includes the following steps. And cleaning the fan blades. And spraying conductive liquid on the surface of the fan blade. And standing the fan blade sprayed with the conductive liquid at normal temperature. And spraying powder on the surface of the fan blade after spraying the conductive liquid and standing at normal temperature. And cooling the fan blade after the powder spraying.
Based on the above, in the fan blade and the manufacturing method thereof of the present invention, the surface has the rough coating, so that the heat dissipation efficiency can be improved.
Drawings
FIG. 1 is a schematic view of a fan blade according to an embodiment of the present invention;
FIG. 2 is a schematic partial cross-sectional view of the fan blade of FIG. 1;
fig. 3 is a flowchart illustrating a method for manufacturing fan blades according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Fig. 1 is a schematic view of a fan blade according to an embodiment of the invention. Referring to fig. 1, an appearance of the fan blade 100 of the present embodiment is a blade of a general centrifugal fan, and includes a hub 110 and a plurality of blades 120 connected to a periphery of the hub 110. However, the fan blade of the present invention is not limited to this type, and may be a fan blade of another type than a centrifugal fan.
Fig. 2 is a partial cross-sectional view of the fan blade of fig. 1. Referring to fig. 2, the cross-section shown may be the hub 110, the blade 120, or other portions of the fan blade 100. The surface S10 of the fan blade 100 has a rough coating 130. In other words, the rough coating 130 may be a surface located on the hub 110, the blade 120, or other portions of the fan blade 100. The rough coating 130 has a plurality of recessed regions 132. The maximum depression depth D10 of the depression region 132 is between 50 micrometers (μm) and 130 micrometers.
In the present embodiment, the arithmetic average roughness (Ra) of the rough coating 130 is between 1.9 micrometers and 5.9 micrometers, but the present invention is not limited thereto.
In the present embodiment, the average value of the recess depth of the recess region 132 is between 35 microns and 65 microns, but the invention is not limited thereto.
FIG. 3 is a flowchart illustrating a method for manufacturing fan blades according to an embodiment of the invention. Referring to fig. 2 and 3, the method for manufacturing the fan blade of the present embodiment includes the following steps. A fan blade is provided, step S12. A rough coating 130 is formed on the surface of the fan blade 100. The rough coating 130 is formed to have a plurality of recessed regions 132. As mentioned above, the maximum recess depth D10 of the recess region 132 is between 50 microns and 130 microns. In the present embodiment, the rough coating 130 is a Powder coating layer, and the method of forming the rough coating 130 includes Powder coating (Powder coating), but the present invention is not limited thereto.
In one embodiment of the present invention, a method of forming a rough coating includes the following steps. For example, the surface of the fan blade 100 is cleaned, step S14. Next, the conductive liquid is sprayed on the surface of the fan blade 100, step S16. Then, the fan blade 100 after the conductive liquid is sprayed is left standing at normal temperature for about 30 minutes, step S18. Then, the fan blade 100 after being sprayed with the conductive liquid and left standing at the normal temperature is hung, and powder is sprayed on the surface of the fan blade 100, step S20. The spraying temperature is about 200 ℃, and the spraying time is about 30 minutes. Then, the fan blade 100 after the powder spraying is cooled, step S22. The material of the sprayed powder includes, for example, polyester and epoxy resin, and the particle size is, for example, between 30 microns and 34 microns. The powder coating technology is more environment-friendly and has better material utilization rate.
In the present embodiment, the maximum recess depth D10 of the recess 132 is greater than 10% of the thickness D20 of the fan blade.
In the following table one, the results of tests performed with the fan having the rough coating according to an embodiment of the present invention and the conventional fan without the rough coating are listed. Wherein, the diameter of the fan is 36mm, the thickness of the fan blade is 0.3mm, and the whole thickness of the fan is 5.5 mm. Flow is in units of CMF (cubic feet per minute), wind pressure is in units of millimeters-water column (mm-Aq), and noise is in units of dB. In the tests of the numbers a and B, the rotation speeds of the fans were the same, while the rotation speed of the fan in the number C was higher. It can be seen from the table one that, at the same rotation speed of the fan, the fan with the rough coating layer generates a larger flow rate and a larger wind pressure than the fan without the rough coating layer, and the fan with the rough coating layer generates a smaller noise than the fan without the rough coating layer. In addition, in the experiments of nos. a and C, the noise generated by the fan with the rough coating is similar to that generated by the fan without the rough coating, and the flow rate generated by the fan with the rough coating can be increased by 7% compared with that generated by the fan without the rough coating, and the wind pressure is also increased by 11.7%.
Watch 1
| Numbering | Fan with cooling device | Flow (CFM) | Wind pressure (mm-Aq) | Noise (dB) |
| A | Without rough coating | 2.82 | 19.7 | 38.13 |
| B | Having a rough coating | 2.84 | 20.0 | 36.89 |
| C | Having a rough coating | 3 | 22.0 | 38.0 |
In summary, in the fan blade and the manufacturing method thereof of the present invention, the rough coating layer enables the surface of the fan blade to have a plurality of concave regions, thereby reducing the resistance encountered during operation. Therefore, the flow and the wind pressure generated by the fan blades can be improved, the heat dissipation efficiency is improved, and the generated noise volume can be reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The fan blade is characterized in that the surface of the fan blade is provided with a rough coating, wherein the rough coating is provided with a plurality of concave areas, and the maximum concave depth of the concave areas is between 50 microns and 130 microns.
2. The fan blade of claim 1, wherein the rough coating has an arithmetic average roughness of between 1.9 microns and 5.9 microns.
3. The fan blade of claim 1, wherein the average of the recess depths of the recessed regions is between 35 microns and 65 microns.
4. The fan blade of claim 1, wherein the rough coating is a powder coating.
5. The fan blade of claim 1, being a centrifugal fan blade.
6. The fan blade of claim 1, wherein the maximum recessed depth of the recessed regions is greater than 10% of the thickness of the blade.
7. A method of manufacturing a fan blade, comprising:
providing fan blades;
forming a rough coating on the surface of the fan blade, wherein the rough coating is formed to have a plurality of recessed areas, and the maximum recessed depth of the recessed areas is between 50 microns and 130 microns.
8. The method of claim 7, wherein the rough coating is formed by powder coating.
9. The method of claim 8, wherein the rough coating is formed by a method comprising:
cleaning the fan blade;
spraying conductive liquid on the surface of the fan blade;
standing the fan blade sprayed with the conductive liquid at normal temperature;
spraying powder on the surface of the fan blade after spraying the conductive liquid and standing at normal temperature; and
cooling the fan blade after powder spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011116426.5A CN114382725A (en) | 2020-10-19 | 2020-10-19 | Fan blade and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011116426.5A CN114382725A (en) | 2020-10-19 | 2020-10-19 | Fan blade and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114382725A true CN114382725A (en) | 2022-04-22 |
Family
ID=81193950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011116426.5A Pending CN114382725A (en) | 2020-10-19 | 2020-10-19 | Fan blade and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114382725A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329696A (en) * | 1998-12-09 | 2002-01-02 | 阿洛伊斯·沃本 | Rotor blade of wind driven generator |
| TW200745449A (en) * | 2006-06-09 | 2007-12-16 | Univ Nat Cheng Kung | Cooling fan |
| US20160040538A1 (en) * | 2014-08-08 | 2016-02-11 | United Technologies Corporation | Aluminum fan blade tip with thermal barrier |
| US20160326622A1 (en) * | 2015-05-06 | 2016-11-10 | United Technologies Corporation | Method of forming an abrasive coating on a fan blade tip |
| CN107091124A (en) * | 2016-02-18 | 2017-08-25 | 通用电气公司 | System and method for depositing multiple coatings simultaneously on the turbo blade of gas-turbine unit |
| CN207064058U (en) * | 2017-06-26 | 2018-03-02 | 浙江新昌嘉安科技咨询有限公司 | A kind of car radiation fan |
-
2020
- 2020-10-19 CN CN202011116426.5A patent/CN114382725A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329696A (en) * | 1998-12-09 | 2002-01-02 | 阿洛伊斯·沃本 | Rotor blade of wind driven generator |
| TW200745449A (en) * | 2006-06-09 | 2007-12-16 | Univ Nat Cheng Kung | Cooling fan |
| US20160040538A1 (en) * | 2014-08-08 | 2016-02-11 | United Technologies Corporation | Aluminum fan blade tip with thermal barrier |
| US20160326622A1 (en) * | 2015-05-06 | 2016-11-10 | United Technologies Corporation | Method of forming an abrasive coating on a fan blade tip |
| CN107091124A (en) * | 2016-02-18 | 2017-08-25 | 通用电气公司 | System and method for depositing multiple coatings simultaneously on the turbo blade of gas-turbine unit |
| CN207064058U (en) * | 2017-06-26 | 2018-03-02 | 浙江新昌嘉安科技咨询有限公司 | A kind of car radiation fan |
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