CN110857702B - Heat dissipation fan blade of electric tool, fan and electric tool - Google Patents
Heat dissipation fan blade of electric tool, fan and electric tool Download PDFInfo
- Publication number
- CN110857702B CN110857702B CN201810979461.6A CN201810979461A CN110857702B CN 110857702 B CN110857702 B CN 110857702B CN 201810979461 A CN201810979461 A CN 201810979461A CN 110857702 B CN110857702 B CN 110857702B
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- blade
- air supply
- supply section
- heat dissipation
- electric tool
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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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
- 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
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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
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
Abstract
The invention discloses a heat dissipation fan blade of an electric tool, a fan and the electric tool, wherein the heat dissipation fan blade of the electric tool comprises: the wind shield disc is in transmission connection with a motor of the electric tool; the upper blades are arranged on the upper surface of the windshield disc, and the outer ends of the upper blades in the radial direction of the windshield disc are positioned on the inner side of the outer edge of the windshield disc; the lower blade is arranged on the lower surface of the windshield disc and is positioned on the radial direction of the windshield disc, and the outer end of the lower blade is positioned on the inner side of the outer edge of the windshield disc. The heat dissipation fan blade of the electric tool provided by the embodiment of the invention has the advantages of good heat dissipation effect, high reliability and the like.
Description
Technical Field
The invention relates to the technical field of electric appliance manufacturing, in particular to a heat dissipation fan blade of an electric tool, a fan of the electric tool with the heat dissipation fan blade of the electric tool and the electric tool with the fan of the electric tool.
Background
Electric tool among the correlation technique can produce a large amount of heats in the use, need carry out the heat dissipation and handle, when the two-way blade that adopts the both sides that can follow the blade to produce the cooling air dispels the heat, easily mutual interference takes place when the cooling air that the both sides of two-way blade produced flows out, and the blade easily bumps into other structures and leads to the damage of blade, influences the use reliability of blade to influence the radiating effect of two-sided blade, influence electric tool's working property.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the heat dissipation fan blade of the electric tool, which has the advantages of good heat dissipation effect, high reliability and the like.
The invention also provides a fan of the electric tool, which is provided with the heat dissipation fan blade of the electric tool.
The invention also provides an electric tool with the fan of the electric tool.
In order to achieve the above object, according to an embodiment of the first aspect of the present invention, a heat dissipation blade for an electric tool is provided, including: the wind shield disc is in transmission connection with a motor of the electric tool; the upper blades are arranged on the upper surface of the windshield disc, and the outer ends of the upper blades in the radial direction of the windshield disc are positioned on the inner side of the outer edge of the windshield disc; the lower blade is arranged on the lower surface of the windshield disc and is positioned on the radial direction of the windshield disc, and the outer end of the lower blade is positioned on the inner side of the outer edge of the windshield disc.
The heat dissipation fan blade of the electric tool provided by the embodiment of the invention has the advantages of good heat dissipation effect, high reliability and the like.
In addition, the heat dissipation fan blade of the electric tool according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the upper surface of the windshield disc is provided with an upper guide inclined surface extending from outside to inside in a downward inclined manner, and the lower surface of the windshield disc is provided with a lower guide inclined surface extending from outside to inside in an upward inclined manner.
According to one embodiment of the invention, the cross-sectional area of the upper blade is gradually reduced from bottom to top, and the cross-sectional area of the lower blade is gradually reduced from top to bottom.
According to one embodiment of the invention, the outer edge of the upper blade extends obliquely inwards from bottom to top and forms an angle of 5-15 degrees with the axial direction of the windshield disc, and the outer edge of the lower blade extends obliquely inwards from top to bottom and forms an angle of 5-15 degrees with the axial direction of the windshield disc.
According to an embodiment of the present invention, a length of the upper blade in the radial direction of the windshield plate is smaller than a length of the lower blade in the radial direction of the windshield plate, the lower blade being adjacent to a motor of the electric power tool with respect to the upper blade.
According to one embodiment of the invention, the upper blade comprises a first upper air supply section and a second upper air supply section, the second upper air supply section is positioned on the outer side of the first upper air supply section and connected with the first upper air supply section, the minimum included angle formed by the first upper air supply section and the second upper air supply section is 80-135 degrees, the lower blade comprises a first lower air supply section and a second lower air supply section, the second lower air supply section is positioned on the outer side of the first lower air supply section and connected with the first lower air supply section, and the minimum included angle formed by the first lower air supply section and the second lower air supply section is 80-135 degrees.
According to one embodiment of the present invention, the length of the second upper blowing section in the horizontal direction is 10% -50% of the length of the first upper blowing section, the length of the second lower blowing section in the horizontal direction is 10% -50% of the length of the first lower blowing section,
according to an embodiment of the present invention, the upper blades are plural and arranged at equal intervals in a circumferential direction of the windshield disc, and the lower blades are plural and arranged at equal intervals in the circumferential direction of the windshield disc.
An embodiment according to a second aspect of the present invention provides a fan of an electric power tool, including: the air conditioner comprises a shell, wherein an upper air outlet and a lower air outlet which are spaced along the axis of the shell are arranged on the shell; the heat dissipation fan blade is arranged in the shell, the wind shield disc is axially positioned between the upper air outlet and the lower air outlet, and the outer edge of the wind shield disc and the inner circumferential surface of the shell are arranged at intervals.
According to one embodiment of the invention, the outer edge of the windshield disc is spaced 1-3 mm from the inner circumferential surface of the housing.
According to an embodiment of the present invention, the upper surface of the windshield plate is provided with an upper guiding inclined plane extending from outside to inside in a downward inclined manner, the lower surface of the windshield plate is provided with a lower guiding inclined plane extending from outside to inside in an upward inclined manner, a radial extension line of at least one position on the upper guiding inclined plane passes through the upper air outlet, and a radial extension line of at least one position on the lower guiding inclined plane passes through the lower air outlet.
According to the fan provided by the embodiment of the invention, the heat dissipation fan blade of the electric tool provided by the embodiment of the first aspect of the invention has the advantages of good heat dissipation effect, high reliability and the like.
An embodiment according to a third aspect of the invention proposes a power tool comprising a fan of a power tool according to the second aspect of the invention.
According to the electric tool provided by the embodiment of the invention, the fan of the electric tool provided by the embodiment of the second aspect of the invention has the advantages of good heat dissipation effect, high reliability and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a partial schematic structural view of a power tool according to an embodiment of the present invention.
Fig. 2 is a partial sectional view of a power tool according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a heat dissipation blade of an electric tool according to an embodiment of the present invention.
Fig. 4 is a sectional view of a heat dissipating blade of an electric tool according to an embodiment of the present invention.
Reference numerals: the air-cooling fan comprises a heat-radiating fan blade 1, a wind-blocking disk 100, an upper guide inclined plane 110, a lower guide inclined plane 120, an upper blade 210, a first upper air supply section 211, a second upper air supply section 212, a lower blade 220, first lower air supply sections and 221, a second lower air supply section 222, a shell 2, an upper air outlet 21 and a lower air outlet 22.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The heat radiation fan blade 1 of the electric tool according to the embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, a heat dissipation fan blade 1 of an electric tool according to an embodiment of the present invention includes a windshield 100, an upper blade 210, and a lower blade 220.
The windshield disc 100 is in transmission connection with a motor of the electric tool. The upper blades 210 are provided on the upper surface of the windshield disc 100 and the outer ends of the upper blades 210 are located inside the outer edge of the windshield disc 100 in the radial direction of the windshield disc 100 (the up-down direction is shown by an arrow a in fig. 1, 2, and 4). The lower blades 220 are provided on the lower surface of the windshield disc 100 and the outer ends of the upper and lower blades 220 in the radial direction of the windshield disc 100 are located inside the outer edge of the windshield disc 100.
According to the heat dissipation fan blade 1 of the electric tool provided by the embodiment of the invention, by arranging the upper blade 210 and the lower blade 220, cooling air can be respectively provided for parts needing to be cooled at two sides of the heat dissipation fan blade 1 by utilizing the upper blade 210 and the lower blade 220, so that the parts at two sides of the heat dissipation fan blade 1 can be subjected to heat dissipation under the condition of not increasing additional heat dissipation equipment, the heat dissipation effect of the heat dissipation fan blade 1 is convenient to improve, the working temperature of the electric tool is convenient to reduce, and the working reliability and stability of the electric tool are convenient to improve.
Moreover, by arranging the wind-shield disc 100, the arrangement of the upper blade 210 and the lower blade 220 is facilitated, the structural strength and the stability of the heat dissipation fan blade 1 are facilitated to be improved, the outer ends of the upper blade 210 and the lower blade 220 are arranged on the inner side of the outer edge of the wind-shield disc 100, the upper blade 210 and the lower blade 220 can be protected by the wind-shield disc 100, the upper blade 210 and the lower blade 220 are prevented from being damaged due to collision with other structures during eccentric rotation, the influence of fragments falling from the upper blade 210 and the lower blade 220 on the normal work of the electric tool is prevented, even the failure of the electric tool is caused, the protection performance of the heat dissipation fan blade 1 is facilitated to be improved, the working reliability and the service life of the heat dissipation fan blade 1 are improved, and the use performance of the electric tool is improved, so that the use experience of a user is improved.
Meanwhile, the outer ends of the upper blade 210 and the lower blade 220 are arranged on the inner side of the outer edge of the windshield disc 100, so that the resistance of the upper blade 210 and the lower blade 220 in the rotation process can be reduced, the working resistance of the heat dissipation fan blade 1 can be reduced conveniently, the upper blade 210 and the lower blade 220 can rotate smoothly to generate cooling air flows on two sides of the heat dissipation fan blade 1 simultaneously, the heat dissipation fan blade 1 can dissipate heat of parts on two sides conveniently, the load of a motor of the electric tool can be reduced conveniently, and the power consumption of the electric tool can be reduced.
In addition, through setting up the wind-break disk 100, can utilize the circulation of wind-break disk 100 both sides cooling air of wind-break disk 100 separation, make the cooling air of wind-break disk 100 both sides can't flow to the opposite side from one side, the cooling air can independent outflow respectively like this, be convenient for guarantee from the amount of wind and the wind pressure of the cooling air of heat dissipation fan blade 1 outflow, avoid the cooling air to take place to disturb and influence the radiating effect of cooling air, be convenient for heat dissipation fan blade 1 smoothly dispels the heat the cooling to the spare part of its both sides, further be convenient for reduce electric tool's operating temperature improves heat dissipation fan blade 1's radiating effect, improves heat dissipation fan blade 1's radiating efficiency and use reliability.
Therefore, the heat dissipation fan blade 1 of the electric tool has the advantages of good heat dissipation effect, high reliability and the like.
The heat radiation fan blade 1 of the electric tool according to the embodiment of the present invention is described below with reference to the accompanying drawings.
In some embodiments of the present invention, as shown in fig. 1 to 4, a heat dissipation fan blade 1 of an electric tool according to an embodiment of the present invention includes a windshield 100, an upper blade 210, and a lower blade 220.
Specifically, as shown in fig. 2 and 4, the upper surface of the windshield 100 is provided with an upper guide slope 110 extending downward from the outside to the inside, and the lower surface of the windshield 100 is provided with a lower guide slope 120 extending upward from the outside to the inside. Therefore, the cooling air on the two sides of the wind shield disc 100 can be guided by the upper guide inclined plane 110 and the lower guide inclined plane 120 respectively, so that the cooling air on the two sides can smoothly flow out of the heat dissipation fan blade 1 to cool the electric tool, interference of the cooling air on the two sides of the wind shield disc 100 is further avoided, the air volume and the air pressure of the cooling air flowing out of the heat dissipation fan blade 1 are further improved, and the heat dissipation effect of the heat dissipation fan blade 1 is further improved.
Alternatively, the cross-sectional area of the upper blade 210 gradually decreases from bottom to top, and the cross-sectional area of the lower blade 220 gradually decreases from top to bottom. Therefore, the structural strength of the connection between the upper blade 210 and the lower blade 220 and the windshield disc 100 can be improved, the structural reliability of the heat dissipation fan blade 1 can be further improved, the resistance of the upper blade 210 and the lower blade 220 in rotation can be reduced, the heat dissipation efficiency of the heat dissipation fan blade 1 can be further improved, and the noise generated during the operation of the heat dissipation fan blade 1 can be reduced. Meanwhile, the collision at the sharp corners of the outer edges of the upper blade 210 and the lower blade 220 when the heat dissipation fan blade 1 is eccentric can be avoided, so that the upper blade 210 and the lower blade 220 can be further protected, and the working reliability and stability of the heat dissipation fan blade 1 can be further improved.
Further, the outer edge of the upper blade 210 extends from bottom to top in an inclined manner and forms an angle of 5-15 degrees with the axial direction of the windshield disc 100, and the outer edge of the lower blade 220 extends from top to bottom in an inclined manner and forms an angle of 5-15 degrees with the axial direction of the windshield disc 100. Therefore, the upper blade 210 and the lower blade 220 are more reasonable in structure, the structural stability of the blades is further improved, the upper ends and the lower ends of the blades are provided with pressure differences, and air flow is guided to flow out of the heat dissipation fan blade 1 conveniently.
Specifically, the length of the upper blade 210 in the radial direction of the windshield 100 is smaller than the length of the lower blade 220 in the radial direction of the windshield 100, and the lower blade 220 is adjacent to the motor of the power tool with respect to the upper blade 210. Therefore, the load of the heat dissipation fan blade 1 can be adjusted by changing the cross sectional area of the fan blade, and the lower fan blade 220 with a large area is arranged near the motor with a high temperature, so that the design of the heat dissipation fan blade 1 is more suitable for the actual use condition, the energy waste can be avoided, and the electric tool is prevented from bringing too large load.
Alternatively, as shown in fig. 1 and 3, the upper blade 210 includes a first upper air supply section 211 and a second upper air supply section 212, the second upper air supply section 212 is located outside the first upper air supply section 211 and connected to the first upper air supply section 211, a minimum included angle formed between the first upper air supply section 211 and the second upper air supply section 212 is 80-135 degrees, the lower blade 220 includes a first lower air supply section 221 and a second lower air supply section 222, the second lower air supply section 222 is located outside the first lower air supply section 221 and connected to the first lower air supply section 221, and a minimum included angle formed between the first lower air supply section 221 and the second lower air supply section 222 is 80-135 degrees. Particularly, the camber of first air supply section and second air supply section can be different, can improve the wind pressure like this, and the reinforcing radiating effect makes the structure of blade more reasonable simultaneously, makes heat dissipation fan blade 1's operation more smooth and easy, is convenient for reduce heat dissipation fan blade 1's running resistance, further reduces electric tool's load. Meanwhile, the rotation resistance of the heat dissipation fan blade 1 can be reduced, so that the heat dissipation fan blade 1 can rotate more smoothly, the air supply effect of the heat dissipation fan blade 1 can be improved conveniently, and the heat dissipation fan blade 1 can perform heat dissipation and cooling on the electric tool better.
Further, the length of the second upper blowing section 212 in the horizontal direction is 10% to 50% of that of the first upper blowing section 211, and the length of the second lower blowing section 222 in the horizontal direction is 10% to 50% of that of the first lower blowing section 221. Further, the length of the second upper blowing section 212 in the horizontal direction is 10% to 15% of that of the first upper blowing section 211, and the length of the second lower blowing section 222 in the horizontal direction is 10% to 15% of that of the first lower blowing section 221. Therefore, the flow resistance of the airflow is further reduced, and the heat dissipation efficiency of the heat dissipation fan blade 1 is further improved.
Specifically, as shown in fig. 1 and 3, the upper blades 210 are plural and equally spaced in the circumferential direction of the windshield 100, and the lower blades 220 are plural and equally spaced in the circumferential direction of the windshield 100. Therefore, the stress of the blades is more uniform, the cooling air can uniformly flow out, and the structural stability and the heat dissipation effect of the heat dissipation fan blade 1 are further improved.
The following describes a blower of a power tool according to an embodiment of the present invention. The fan of the electric tool comprises a shell 2 and a heat dissipation fan blade 1, wherein an upper air outlet 21 and a lower air outlet 22 which are spaced along the axis of the shell 2 are arranged on the shell 2. The heat dissipation fan blade 1 is the heat dissipation fan blade of the electric tool according to any of the embodiments, the heat dissipation fan blade 1 is disposed in the housing 2, the windshield 100 is axially located between the upper air outlet 21 and the lower air outlet 22, and the outer edge of the windshield 100 is spaced from the inner circumferential surface of the housing 2. Not only can utilize casing 2 to protect heat dissipation fan blade 1 like this, improve the working property of fan, it corresponds with last a plurality of air outlets 21 of in bank setting to go up blade 210, the heat dissipation air current of going up blade 210 guide is discharged through last air outlet 21, lower blade 220 corresponds with a plurality of air outlets 22 of in bank setting down, the heat dissipation air current of lower blade 220 guide is discharged through air outlet 22 down, the heat dissipation air current temperature of going up blade 210 guide is lower than the heat dissipation air current of lower blade 220 guide, go up air outlet 21, lower air outlet 22 and wind-break dish 100 can be so that the cooling air of heat dissipation fan blade 1 both sides is discharged from last air outlet 21 and lower air outlet 22 respectively, avoid the cooling air of both sides to take place the interference, go up air outlet 21 combustion gas temperature low, avoid scalding the output user, be convenient for simultaneously improve the radiating effect of fan.
Specifically, the outer edge of the windshield disc 100 is spaced 1 to 3 mm from the inner circumferential surface of the housing 2. Specifically, the outer edge of the windshield tray 100 is spaced from the inner circumferential surface of the housing 2 by less than 2 mm. Therefore, the fan has a reasonable structure, the damage caused by collision between the wind shielding disc 100 and the shell 2 when the heat dissipation fan blade 1 rotates eccentrically is avoided, and the working reliability of the fan is improved conveniently.
Optionally, the upper surface of the windshield 100 is provided with an upper guiding inclined plane 110 extending downward from outside to inside, the lower surface of the windshield 100 is provided with a lower guiding inclined plane 120 extending upward from outside to inside, a radial extension line of at least one position on the upper guiding inclined plane 110 passes through the upper air outlet 21, and a radial extension line of at least one position on the lower guiding inclined plane 120 passes through the lower air outlet 22. In this way, the cooling air on both sides of the windshield 100 can be guided by the upper guide inclined plane 110 and the lower guide inclined plane 120, so that the cooling air on both sides can be smoothly discharged from the upper air outlet 21 and the lower air outlet 22, and the heat dissipation effect of the fan can be further improved.
According to the fan of the electric tool, the heat dissipation fan blade 1 of the electric tool has the advantages of being good in heat dissipation effect, high in reliability and the like.
The following describes a power tool according to an embodiment of the present invention. The electric tool according to the embodiment of the invention comprises the fan of the electric tool according to the above-mentioned embodiment of the invention.
According to the electric tool provided by the embodiment of the invention, the fan of the electric tool provided by the embodiment of the invention has the advantages of good heat dissipation effect, high reliability and the like.
Other constructions and operations of the power tool according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides an electric tool's heat dissipation fan blade which characterized in that includes:
the wind shield disc is in transmission connection with a motor of the electric tool;
the upper blades are arranged on the upper surface of the windshield disc, and the outer ends of the upper blades in the radial direction of the windshield disc are positioned on the inner side of the outer edge of the windshield disc;
the lower blades are arranged on the lower surface of the windshield disc, the outer ends of the lower blades in the radial direction of the windshield disc are positioned on the inner side of the outer edge of the windshield disc,
the outer edge of the upper blade extends obliquely inwards from bottom to top and forms 5-15 degrees with the axial direction of the windshield disc, the outer edge of the lower blade extends obliquely inwards from top to bottom and forms 5-15 degrees with the axial direction of the windshield disc,
the length of the upper blade in the radial direction of the wind deflector is smaller than that of the lower blade in the radial direction of the wind deflector, and the lower blade is adjacent to a motor of the electric tool relative to the upper blade.
2. The heat dissipation blade of claim 1, wherein the upper surface of the wind shielding plate has an upper guiding inclined surface extending downward from outside to inside, and the lower surface of the wind shielding plate has a lower guiding inclined surface extending upward from outside to inside.
3. The heat dissipating fan blade of claim 1, wherein the cross-sectional area of the upper blade decreases gradually from bottom to top, and the cross-sectional area of the lower blade decreases gradually from top to bottom.
4. The heat dissipation fan blade of electric tool of claim 1, wherein the upper blade comprises a first upper air supply section and a second upper air supply section, the second upper air supply section is located outside the first upper air supply section and connected to the first upper air supply section, the minimum included angle between the first upper air supply section and the second upper air supply section is 80-135 degrees, the lower blade comprises a first lower air supply section and a second lower air supply section, the second lower air supply section is located outside the first lower air supply section and connected to the first lower air supply section, and the minimum included angle between the first lower air supply section and the second lower air supply section is 80-135 degrees.
5. The heat dissipation fan blade of the electric tool according to claim 4, wherein the length of the second upper air supply section in the horizontal direction is 10% -50% of that of the first upper air supply section, and the length of the second lower air supply section in the horizontal direction is 10% -50% of that of the first lower air supply section.
6. The heat dissipation fan blade of electric tool according to claim 1, wherein the upper blades are plural and arranged at equal intervals in the circumferential direction of the windshield disc, and the lower blades are plural and arranged at equal intervals in the circumferential direction of the windshield disc.
7. A fan for a power tool, comprising:
the air conditioner comprises a shell, wherein an upper air outlet and a lower air outlet which are spaced along the axis of the shell are arranged on the shell;
the heat dissipation fan blade of the electric tool according to any one of claims 1 to 6, wherein the heat dissipation fan blade is arranged in the housing, the wind-shielding disc is axially positioned between the upper air outlet and the lower air outlet, and the outer edge of the wind-shielding disc is arranged at intervals with the inner circumferential surface of the housing.
8. The fan of claim 7, wherein the outer edge of the windshield disc is spaced 1-3 mm from the inner circumferential surface of the housing.
9. The blower of the power tool according to claim 7, wherein the upper surface of the windshield plate is provided with an upper guiding inclined surface extending from outside to inside in a downward inclined manner, the lower surface of the windshield plate is provided with a lower guiding inclined surface extending from outside to inside in an upward inclined manner, a radial extension line of at least one position on the upper guiding inclined surface passes through the upper air outlet, and a radial extension line of at least one position on the lower guiding inclined surface passes through the lower air outlet.
10. A power tool comprising a blower of the power tool according to any one of claims 7 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810979461.6A CN110857702B (en) | 2018-08-23 | 2018-08-23 | Heat dissipation fan blade of electric tool, fan and electric tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810979461.6A CN110857702B (en) | 2018-08-23 | 2018-08-23 | Heat dissipation fan blade of electric tool, fan and electric tool |
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| CN110857702A CN110857702A (en) | 2020-03-03 |
| CN110857702B true CN110857702B (en) | 2021-08-31 |
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| CN2393256Y (en) * | 1999-10-19 | 2000-08-23 | 金马达制造厂有限公司 | Double-fan motor |
| CN201013629Y (en) * | 2007-02-14 | 2008-01-30 | 佛山市顺德区新生源电器有限公司 | Double air duct centrifugal blower fan |
| CN103904813A (en) * | 2012-12-25 | 2014-07-02 | 中山大洋电机股份有限公司 | Large-power motor heat-radiation structure |
| CN204216733U (en) * | 2014-11-11 | 2015-03-18 | 常州格力博有限公司 | The two-way cooling device of motor blower fan for electric tool |
| CN205779897U (en) * | 2016-07-05 | 2016-12-07 | 珠海格力电器股份有限公司 | Centrifugal blower |
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| CN110857702A (en) | 2020-03-03 |
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