CN108071090B - Blower and axial fan thereof - Google Patents
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- CN108071090B CN108071090B CN201710257324.7A CN201710257324A CN108071090B CN 108071090 B CN108071090 B CN 108071090B CN 201710257324 A CN201710257324 A CN 201710257324A CN 108071090 B CN108071090 B CN 108071090B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0809—Loosening or dislodging by blowing ; Drying by means of gas streams
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Cleaning And Drying Hair (AREA)
Abstract
The invention discloses a blower and an axial flow fan thereof; the blower includes an axial flow fan; the axial flow fan includes: a central hub rotating about a central axis; a plurality of blades; defining an X axis, a Y axis, and a Z axis; the projection of the front edge on a plane formed by the X axis and the Y axis extends outwards along the radial direction of the central axis and extends forwards along the rotating direction of the axial flow fan; the projection of the front edge on a plane formed by the Z axis and the Y axis extends outwards along the radial direction of the central axis and extends towards one side of the air inlet of the axial flow fan; the included angle between the tangent of the plane formed by the X axis and the Y axis of the front edge and the Y axis on the projection of the plane formed by the X axis and the Y axis at the front edge point of the tip is more than or equal to 5 degrees and less than or equal to 15 degrees; the included angle between the tangent of the plane formed by the Z axis and the Y axis of the front edge and the Y axis at the point of the front edge of the tip and the Y axis is more than or equal to 15 degrees and less than or equal to 25 degrees. The blower and the axial flow fan thereof realize higher air volume under lower power consumption.
Description
Technical Field
The present invention relates to a hair dryer and an axial flow fan thereof.
Background
A blower is a commonly used garden-like tool that helps a user to clean fallen leaves in the garden with a stream of air. Existing blowers are classified into centrifugal blowers and axial blowers. Wherein the axial flow blower is capable of generating a larger air volume to make it more suitable for the needs of the user.
The blower generates the required air flow through the air duct and the fan arranged in the air duct, and in order to realize better blowing effect, the air duct structure is preferably designed into a linear air duct.
Existing hair dryers often employ larger battery packs in order to increase power and usage time. The existing blower is often bent to assemble a battery pack and arrange a handle of the blower.
The existing axial flow fan has high power consumption when realizing large air volume, and the endurance time of the blower is reduced.
Disclosure of Invention
To solve the disadvantages of the prior art, an object of the present invention is to provide a hair dryer with an axial flow fan capable of realizing low power consumption and high air volume.
In order to achieve the above object, the present invention adopts the following technical solutions:
a hair dryer, comprising: a fan; the motor drives the fan to rotate around the central axis; an air duct portion formed with an air duct extending substantially along the central axis; a coupling part for coupling with a battery pack for supplying power to the motor; a handle connected to the air duct portion and the combining portion, respectively; wherein the fan is accommodated in the air duct; the two opposite ends of the air duct are respectively provided with an air duct inlet and an air duct outlet; the air duct inlet is positioned between the air duct outlet and the combining part; the combining part, the air duct part and the handle form an air inlet space, and the air inlet space is open in the radial direction of the central axis.
Further, the handle is located radially outward of the duct inlet in a direction of the central axis.
Further, in the axial direction of the central axis, the distance between the combining part and the air duct inlet is more than or equal to 120mm and less than or equal to 150 mm.
Further, a ratio of a distance from the joint to the duct inlet in an axial direction of the central axis to a maximum dimension of the duct in a radial direction of the central axis at the fan position is 1 or more and 3 or less.
Further, the ratio of the distance from the joint to the air duct inlet in the axial direction of the central axis to the dimension of the whole of the battery pack and the blower in the axial direction of the central axis when the battery pack is joined to the joint is 10% or more and 16% or less.
Further, the direction in which the battery pack is coupled to the coupling portion obliquely intersects the central axis.
Further, when the battery pack is combined to the combining part, one end of the battery pack close to the handle along the radial direction of the central axis is defined as the upper end of the battery pack, and one end of the battery pack far away from the handle is defined as the lower end of the battery pack; in the axial direction along the central axis, the distance from the upper end of the battery pack to the air duct inlet is greater than the distance from the lower end of the battery pack to the air duct inlet.
Further, one side of the air duct outlet is defined as the front; defining one side of an air duct inlet as a rear part; defining one side of the handle as the upper part; the battery pack is combined with the combining part along the direction from the upper back to the lower front.
Further, the combining part is provided with a sliding surface; a sliding surface for guiding the sliding of the battery pack relative to the combining part; the sliding surface obliquely intersects the central axis.
Further, the joint part is provided with a limiting surface: the limiting surface is used for limiting the position of the battery pack relative to the combining part; the limiting surface is perpendicular to the sliding surface.
Further, when the battery pack is coupled to the coupling portion, the center of gravity of the whole of the battery pack and the blower is located in the air intake space.
An axial flow fan comprising: a central hub rotating about a central axis; a plurality of blades extending radially outward from the central hub and distributed about the central axis; a plurality of blades integrally formed with the central hub; the blade defines a suction surface and a pressure surface for generating wind; the two opposite ends of the suction surface and the pressure surface are respectively converged into a front edge and a rear edge; the front edge is located in front of the rear edge in the rotational direction of the axial fan; the point of the leading edge near the central hub is defined as the root leading edge point; the point of the leading edge distal from the central hub is defined as the point of the leading edge of the tip; a line which passes through the root leading edge point and is vertical to and intersected with the central axis is defined as a Y axis; the central axis is defined as the Z axis; a line perpendicular to and intersecting the Y axis and the Z axis is defined as an X axis; the projection of the front edge on a plane formed by the X axis and the Y axis extends outwards along the radial direction of the central axis and extends forwards along the rotating direction of the axial flow fan; the projection of the front edge on a plane formed by the Z axis and the Y axis extends outwards along the radial direction of the central axis and extends towards one side of the air inlet of the axial flow fan; the included angle between the tangent of the plane formed by the X axis and the Y axis of the front edge and the Y axis on the projection of the plane formed by the X axis and the Y axis at the front edge point of the tip is more than or equal to 5 degrees and less than or equal to 15 degrees; the included angle between the tangent of the plane formed by the Z axis and the Y axis of the front edge and the Y axis at the point of the front edge of the tip and the Y axis is more than or equal to 15 degrees and less than or equal to 25 degrees.
Furthermore, the included angle between the tangent of the projection of the front edge on the plane formed by the X axis and the Y axis at the front edge point of the tip and the Y axis is more than or equal to 6 degrees and less than or equal to 10 degrees; the included angle between the tangent of the plane formed by the Z axis and the Y axis of the front edge and the Y axis at the point of the front edge of the tip and the Y axis is more than or equal to 20 degrees and less than or equal to 22 degrees.
Further, the bending angle of the blade root of the blade is more than or equal to 5 degrees and less than or equal to 35 degrees.
Further, the setting angle at the root of the blade is equal to or greater than 30 degrees and equal to or less than 60 degrees.
Further, the distance from the blade tip of the blade to the central axis is the radius of the blade tip of the blade; the distance from the blade root of the blade to the central axis is the radius of the blade root of the blade; the ratio of the radius of the root of the blade to the radius of the tip of the blade is 0.5 to 0.6.
Further, the radius of the tip of the blade is not less than 40mm and not more than 55 mm.
Further, the chord length of the blade root of the blade is more than or equal to 18mm and less than or equal to 21 mm.
Further, the leading edge air inlet angle at the root of the blade is more than or equal to 25 degrees and less than or equal to 45 degrees; and the trailing edge air outlet angle at the blade root of the blade is more than or equal to 40 degrees and less than or equal to 85 degrees.
A hair dryer, comprising: a motor; the axial flow fan is driven by the motor to rotate; an air duct portion formed with an air duct for guiding the air generated by the axial flow fan; the axial fan is positioned in the air duct.
Further, the rotational speed of the axial flow fan is 20000rpm or more and 25000rpm or less.
The invention has the advantages that: the axial flow fan has lower power consumption and higher air volume through the optimized design of the axial flow fan, and the endurance time of the hair dryer is prolonged.
Drawings
Figure 1 is a perspective view of a hair dryer of the present invention;
figure 2 is a partial sectional view of the blower of figure 1;
figure 3 is a plan view of the blower of figure 1;
figure 4 is a schematic view of a battery pack mounting of the blower of figure 1;
figure 5 is a schematic view of the coupling portion of the blower of figure 1;
figure 6 is a perspective view of another blower;
figure 7 is a plan view of the blower of figure 6;
figure 8 is a perspective view of a fan of the blower of figure 1;
FIG. 9 is a plan view of the fan of FIG. 8;
FIG. 10 is a schematic view of a projection of the blades of the fan of FIG. 8 onto a plane formed by the Z-axis and the Y-axis;
fig. 11 is a schematic view of the installation angle and the bending angle of the fan in fig. 8.
Detailed Description
As shown in fig. 1 and 2, the blower 100 includes a fan 10, a motor 20, an air channel portion 30, a coupling portion 40, and a handle 50.
The motor 20 drives the fan 10 to rotate about the central axis 101.
The air passage portion 30 is formed with an air passage 31 for guiding the wind generated by the fan 10. In one embodiment, the air duct 31 extends generally along the central axis 101. As an alternative embodiment, the air duct may also be curved. As another alternative embodiment, the air channel portion forming the air channel comprises a bendable flexible tube. The air duct 31 is provided at opposite ends thereof with an air duct inlet 32 and an air duct outlet 33, respectively. The duct inlet 32 provides an air flow into the duct 31. The duct outlet 33 provides air flow out of the duct 31. The fan 10 rotates to push airflow into the air duct 31 from the air duct inlet 32 and out of the air duct 31 from the air duct outlet 33. The fan 10 is located in the wind tunnel 31. The fan 10 is located between the duct inlet 32 and the duct outlet 33. Further, the motor 20 is also located in the wind tunnel 31. The motor 20 is located between the duct inlet 32 and the duct outlet 33.
The coupling portion 40 is used to mount the battery pack 60. When the battery pack 60 is coupled to the coupling part 40, power can be supplied to the motor 20.
The duct inlet 32 is located between the duct outlet 33 and the junction 40. The duct inlet 32 is located between the junction 40 and the fan 10.
The combination portion 40, the air channel portion 30 and the handle 50 are configured to form a relatively open space at the air channel inlet 32 to facilitate the air flow entering the air channel inlet 32. It can be said that the combining portion 40, the air channel portion 30 and the handle 50 constitute an air intake space 80. The intake space 80 is open in the radial direction of the central axis 101. Air may enter the air intake space 80 radially of the central axis 101, and the air intake space 80 is connected to the air duct inlet 32, thereby enabling air flow from the air duct inlet 32 into the air duct 31. The air inlet space 80 reduces the air inlet resistance and improves the efficiency of the air outlet machine. The handle 50 is located radially outward of the duct inlet 32 from the central axis 101. Or the projection of the handle 50 on a plane perpendicular to the central axis 101, is located outside the projection of the duct inlet 32 on a plane perpendicular to the central axis 101. The handle 50 is prevented from reducing the air flow flowing in due to the fact that the handle is arranged in the projection range corresponding to the air duct inlet 32, and the air inlet efficiency is prevented from being influenced due to the fact that the space directly corresponding to the air duct inlet 32 is reduced due to the arrangement of the position of the handle 50.
In the axial direction of the central axis 101, the distance L1 between the joint 40 and the air duct inlet 32 is 120mm or more and 150mm or less. When the distance L1 from the joint 40 to the air duct inlet 32 is too large, the size of the blower 100 in the axial direction of the central axis 101 becomes large, which is inconvenient for the user to use and carry. In addition, when the distance from the joint 40 to the air duct inlet 32 is too small, the air intake efficiency of the blower 100 is affected. The distance between the junction 40 and the duct inlet 32 ensures that the blower 100 is not too long and that the blower 100 has a high efficiency.
The dimensions of the fan 10 and the air duct 31 vary from blower 100 to blower 100, and the efficiency of the blower 100 is affected by the dimensions. The maximum dimension L2 of the air duct 31 in the radial direction of the central axis 101 at the position of the fan 10, this dimension L2 can also be regarded as the inner diameter of the air duct 31 at the position of the fan 10. The ratio of the distance L1 to the dimension L2 is equal to or greater than 1 and equal to or less than 3. This arrangement ensures that the blower 100 is not too long and that sufficient air is drawn. Specifically, the rotation speed of the fan 10 is 20000rpm or more and 30000rpm or less. Further, the rotation speed of the fan 10 is 20000rpm or more and 25000rpm or less. The fan 10 is an axial flow fan. The maximum wind power of the air duct outlet 33 is greater than or equal to 12N and less than or equal to 25N. The maximum wind speed of the wind channel outlet 33 is more than or equal to 45m/s and less than or equal to 70 m/s.
The ratio of the distance L1 from the joint 40 to the duct inlet 32 in the axial direction of the central axis 101 to the dimension L3 on the central axis 101 of the whole of the battery pack 60 and the blower 100 when the battery pack 60 is joined to the joint 40 is 10% or more and 16% or less, that is, 10% to L1/L3 to 16%. This arrangement ensures that the length of the blower 100 is within a reasonable range for the user to operate and also ensures adequate intake of air.
As shown in fig. 3 and 4, the battery pack 60 is detachably coupled to the coupling portion 40. The battery pack 60 is slidably coupled to the coupling portion 40. The direction D1 in which the battery pack 60 is coupled to the coupling portion 40 obliquely intersects the central axis 101. The direction D1 in which the battery pack 60 is coupled to the coupling portion 40 obliquely intersects a plane perpendicular to the central axis 101. The direction D1 in which the battery pack 60 is coupled to the coupling portion 40 is not parallel to the central axis 101, and further, the direction D1 in which the battery pack 60 is coupled to the coupling portion 40 is not perpendicular to the central axis 101.
When the battery pack 60 is coupled to the coupling portion 40, a section of the battery pack 60 close to the handle 50 in a radial direction of the central axis 101 is defined as an upper end 61 of the battery pack 60, and a section of the battery pack 60 away from the handle 50 is defined as a lower end 62 of the battery pack 60.
In the axial direction along the center axis 101, the distance L4 from the upper end 61 of the battery pack 60 to the air duct inlet 32 is greater than the distance L5 from the lower end 62 of the battery pack 60 to the air duct inlet 32.
The duct outlet 33 side is defined as the front, and the duct inlet 32 side is defined as the rear. The handle 50 is upward on one side. The junction 40 is located rearward of the duct inlet 32. The duct outlet 33 is located forward of the duct inlet 32. The battery pack 60 is inserted into the coupling portion 40 in the rear upper position, and is slid in the rear upper to front lower direction to be coupled with the coupling portion 40. The battery pack 60 is installed in an inclined manner so that the user can easily detach or install the battery pack 60.
As shown in fig. 5, the joint portion 40 is provided with a sliding surface 41 and a stopper surface 42. The sliding surface 41 guides the sliding movement of the battery pack 60 relative to the joint portion 40. The stopper surface 42 restricts the position of the battery pack 60 relative to the joint portion 40. The sliding surface 41 obliquely intersects the central axis 101. The stopper surface 42 is perpendicular to the sliding surface 41.
As shown in fig. 3, when the battery pack 60 is coupled to the coupling portion 40, the center of gravity of the whole of the battery pack 60 and the blower 100 is located in the air intake space. The center of gravity of the battery pack 60 and blower 100 as a whole, as projected onto central axis 101, is within the range of the illustrated projection of handle 50 onto central axis 101 for ease of handling and gripping by the user.
As another embodiment, as shown in fig. 6 and 7, a blower 100 'is provided with a support base 90' in addition to the blower 100. The hair dryer 100 'can be conveniently and stably placed on the ground, and the storage of the hair dryer 100' is convenient. The blower 100 'also forms the air intake space 80'. The support seat 90 ' connects the coupling portion 40 ' and the air channel portion 30 '. Specifically, the support seat 90 'connects the coupling portion 40' and the air channel portion 30 'on a side away from the handle 50'. The handle 50 ' and the support seat 90 ' are respectively connected to both ends of the combining portion 40 '. The handle 50 ' and the support 90 ' are respectively connected to both ends of the air channel portion 30 '.
As shown in fig. 8, the fan 10 includes a central hub 11 and a plurality of blades 12. The central hub 11 rotates about a central axis 101. The central hub 11 is connected to a motor shaft of the motor 20.
The blades 12 extend radially outward from the central hub 11. A plurality of blades 12 are distributed around the central axis 101. Specifically, the plurality of blades 12 are integrally molded with the central hub 11 as one piece.
The blade 12 defines a pressure side 122 and a suction side 121 for generating wind. The pressure surface 122 and the suction surface 121 configure the blade 12 to an airfoil shape.
The opposite ends of the suction side 121 and the pressure side 122 meet at a leading edge 123 and a trailing edge 124, respectively. The front edge 123 is located forward of the rear edge 124 in the direction of rotation of the fan 10.
The point of the leading edge 123 near the central hub 11 is defined as the root leading edge point G1. The point of leading edge 123 distal from central hub 11 is defined as tip leading edge point G2.
A line perpendicular to and intersecting the central axis 101 through the root leading edge point G1 is defined as a Y-axis; central axis 101 is defined as the Z-axis; a line perpendicular to and intersecting the Y axis and the Z axis is defined as the X axis.
As shown in fig. 9, a projection of the front edge 123 on a plane formed by the X axis and the Y axis extends outward in a radial direction of the central axis 101 and forward in the rotational direction of the fan 10. The plane shown in fig. 9 is a plane formed by the X axis and the Y axis. The direction indicated by the arrow in fig. 9 is the rotational direction of the fan 10.
An included angle δ 1 between a tangent 102 to a plane formed by the X axis and the Y axis of the front edge 123 projected at the tip front edge point G2 and the Y axis is 5 degrees or more and 15 degrees or less. That is, the included angle δ 1 between the tangent line 102 and the Y axis is not less than 5 degrees and not more than 15 degrees.
As shown in fig. 10, the projection of the front edge 123 on the plane formed by the Z axis and the Y axis extends radially outward of the central axis 101 and toward the side where the fan 10 supplies air. The plane shown in fig. 10 is a plane formed by the Y axis and the Z axis. The direction indicated by the arrow in fig. 10 is the direction of movement of the air flow. The left side is the side of the fan 10 that enters the air. The right side is the side of the fan 10 that blows out. The air flows from the air inlet side to the air outlet side.
An included angle δ 2 between a tangent 103 of the front edge 123 to the Y axis at the tip front edge point G2 as projected on a plane formed by the Z axis and the Y axis is 15 degrees or more and 25 degrees or less. That is, the included angle between the tangent line 103 and the Y axis is 15 degrees or more and 25 degrees or less.
Specifically, the included angle δ 1 between the tangent line 102 and the Y axis is 6 degrees or more and 10 degrees or less. The included angle between the tangent line 103 and the Y axis is not less than 20 degrees and not more than 22 degrees.
For the angle δ 1, refer to the following table, when the angle of the angle δ 1 increases, the amount of air generated by the fan 10 gradually decreases while the power consumption thereof gradually decreases.
| Design parameters | Increase of air volume | Increased power consumption |
| The included |
-0.92% | -2.80% |
| The included |
-2.40% | -6.50% |
| The included |
-3.92% | -10.35% |
For the angle δ 2, refer to the following table that the amount of air generated by the fan 10 gradually increases while the power consumption thereof gradually increases when the angle of the angle δ 2 increases.
| Design parameters | Increase of air volume | Increased power consumption |
| The included |
2.18% | 6.05% |
| The included |
3.20% | 8.32% |
| The included |
5.07% | 11.67% |
The reasonable arrangement of the included angle delta 1 and the included angle delta 2 can enable the air volume to be increased and simultaneously enable relatively low power consumption to be kept.
More specifically, the bending angle θ of the blade root of the blade 12 is 5 degrees or more and 35 degrees or less. The setting angle β 0 at the root of the blade 12 is 30 degrees or more and 60 degrees or less.
| Design parameters | Increase of air volume | Increased power consumption |
| 1.5 times of |
20.66% | 42.07% |
| 1.4 times of |
18.65% | 35.03% |
| 1.3 times of |
16.84% | 28.86% |
| 1.2 times of |
14.86% | 22.74% |
| 1.1 times of |
13.93% | 20.13% |
The increase of the installation angle beta 0 can increase the air quantity and also increase the power consumption. The selection of the bending angle theta and the installation angle beta 0 gives consideration to air volume and power consumption. The bending angle theta and the installation angle beta 0 are set so that the air volume of the fan 10 can be increased under the condition of low power consumption of the fan 10.
The tip of the blade 12 is spaced from the central axis 101 by the radius L6 of the tip of the blade 12; the root of the blade 12 is at a distance L7 from the central axis 101 that is the radius of the root of the blade 12; the ratio of the radius L7 of the root of the blade 12 to the radius L6 of the tip of the blade 12 is 0.5 or more and 0.6 or less. Specifically, the radius of the tip of the blade 12 is 40mm or more and 55mm or less. Further, the radius of the tip of the blade 12 is 45mm or more and 49mm or less.
The chord length L8 at the root of the blade 12 is 18mm or more and 21mm or less.
A leading edge inlet angle β 1 at the root of the blade 12 is not less than 25 degrees and not more than 45 degrees; the trailing edge discharge angle β 2 at the root of the blade 12 is equal to or greater than 40 degrees and equal to or less than 85 degrees.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. An axial flow fan comprising:
a central hub rotating about a central axis;
a plurality of blades extending radially outward from the central hub and distributed about the central axis; a plurality of said blades being integrally formed with said central hub;
the blade defines a suction side and a pressure side for generating wind;
the two opposite ends of the suction surface and the pressure surface are respectively converged into a front edge and a rear edge; the front edge is located forward of the rear edge in a rotational direction of the axial fan;
the point of the leading edge near the central hub is defined as a root leading edge point; a point of the leading edge distal from the central hub is defined as a tip leading edge point;
a line which passes through the root leading edge point and is vertical to and intersected with the central axis is defined as a Y axis; the central axis is defined as a Z-axis; a line perpendicular to and intersecting the Y axis and the Z axis is defined as an X axis;
the projection of the front edge on a plane formed by an X axis and a Y axis extends outwards along the radial direction of the central axis and extends forwards along the rotating direction of the axial flow fan;
the projection of the front edge on a plane formed by the Z axis and the Y axis extends outwards along the radial direction of the central axis and extends towards one side of the air inlet of the axial flow fan;
the included angle between the tangent of the plane formed by the X axis and the Y axis of the front edge and the Y axis in the projection of the plane is more than or equal to 5 degrees and less than or equal to 15 degrees;
the included angle between the tangent line of the projection of the front edge on the plane formed by the Z axis and the Y axis at the front edge point of the tip and the Y axis is more than or equal to 15 degrees and less than or equal to 25 degrees.
2. The axial fan according to claim 1, wherein:
the included angle between the tangent of the projection of the front edge on the plane formed by the X axis and the Y axis at the front edge point of the tip part is more than or equal to 6 degrees and less than or equal to 10 degrees;
the included angle between the tangent line of the projection of the front edge on the plane formed by the Z axis and the Y axis at the front edge point of the tip and the Y axis is more than or equal to 20 degrees and less than or equal to 22 degrees.
3. The axial fan according to claim 1, wherein:
and the installation angle of the blade root of the blade is more than or equal to 30 degrees and less than or equal to 60 degrees.
4. The axial fan according to claim 1, wherein:
the bending angle of the blade root of the blade is more than or equal to 5 degrees and less than or equal to 35 degrees.
5. The axial fan according to claim 1, wherein:
the distance from the tip of the blade to the central axis is the radius of the tip of the blade; the distance from the blade root of the blade to the central axis is the radius of the blade root of the blade;
the ratio of the radius of the root of the blade to the radius of the tip of the blade is 0.5 or more and 0.6 or less.
6. The axial fan according to claim 5, wherein:
the radius of the blade tip of the blade is more than or equal to 40mm and less than or equal to 55 mm.
7. The axial fan according to claim 1, wherein:
the chord length of the blade root of the blade is more than or equal to 18mm and less than or equal to 21 mm.
8. The axial fan according to claim 1, wherein:
the leading edge air inlet angle of the blade root of the blade is more than or equal to 25 degrees and less than or equal to 45 degrees;
and the trailing edge air outlet angle of the blade root of the blade is more than or equal to 40 degrees and less than or equal to 85 degrees.
9. A hair dryer, comprising:
a motor;
the axial flow fan as claimed in any one of claims 1 to 8, driven to rotate by the motor;
an air duct portion formed with an air duct for guiding the wind generated by the axial flow fan;
the axial flow fan is positioned in the air duct.
10. The hair dryer of claim 9, wherein:
the rotational speed of the axial flow fan is not less than 20000rpm and not more than 25000 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/802,139 US10405707B2 (en) | 2016-11-07 | 2017-11-02 | Blower |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016109767342 | 2016-11-07 | ||
| CN201610976734 | 2016-11-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071090A CN108071090A (en) | 2018-05-25 |
| CN108071090B true CN108071090B (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710258243.9A Pending CN108071091A (en) | 2016-11-07 | 2017-04-19 | Hair-dryer |
| CN201710257324.7A Active CN108071090B (en) | 2016-11-07 | 2017-04-19 | Blower and axial fan thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710258243.9A Pending CN108071091A (en) | 2016-11-07 | 2017-04-19 | Hair-dryer |
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| CN (2) | CN108071091A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578333A (en) * | 2018-09-17 | 2019-04-05 | 浙江卓远机电科技有限公司 | A kind of impeller composite structure |
| CN109505790B (en) * | 2018-12-28 | 2020-10-23 | 哈尔滨工业大学 | High-load high-through-flow-capacity axial flow fan |
| CN109723016B (en) * | 2019-01-17 | 2020-09-08 | 林小芬 | Automatic descaling machine of garden management leaf |
| JP7294823B2 (en) * | 2019-02-13 | 2023-06-20 | 株式会社マキタ | Blower |
| DE112020000782T5 (en) | 2019-02-13 | 2021-12-02 | Makita Corporation | fan |
| CN111749913A (en) * | 2019-03-27 | 2020-10-09 | 苏州宝时得电动工具有限公司 | Garden blower |
| CN114319209A (en) * | 2020-09-29 | 2022-04-12 | 苏州宝时得电动工具有限公司 | Hair drier |
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| CN2523994Y (en) * | 2001-11-16 | 2002-12-04 | 石家庄市风机厂 | Reversal axial fan |
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| CN203452031U (en) * | 2013-03-29 | 2014-02-26 | 南京德朔实业有限公司 | Handheld air blower |
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| CN205331054U (en) * | 2016-01-29 | 2016-06-22 | 邯郸市东方风机制造有限公司 | Axial -flow fan with many curved surfaces type blade |
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| SU619692A1 (en) * | 1974-04-01 | 1978-08-15 | Институт Горной Механики И Технической Кибернетики Им.М.М.Федорова | Axial fan runner |
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| CN203756564U (en) * | 2013-12-31 | 2014-08-06 | 常州格力博有限公司 | Axial flow blower |
| DE112014006478T5 (en) * | 2014-03-17 | 2016-12-29 | Husqvarna Ab | Motor unit cooling system |
| JP6368616B2 (en) * | 2014-10-21 | 2018-08-01 | 株式会社マキタ | Power blower working machine |
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| CN105370592A (en) * | 2015-11-25 | 2016-03-02 | 常州格力博有限公司 | Direct-current brush axial flow blower |
| CN205378984U (en) * | 2015-11-25 | 2016-07-13 | 常州格力博有限公司 | Direct current axial compressor hair -dryer |
| CN205243890U (en) * | 2015-11-25 | 2016-05-18 | 常州格力博有限公司 | Direct current has brush axial compressor hair -dryer |
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- 2017-04-19 CN CN201710258243.9A patent/CN108071091A/en active Pending
- 2017-04-19 CN CN201710257324.7A patent/CN108071090B/en active Active
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| CN2523994Y (en) * | 2001-11-16 | 2002-12-04 | 石家庄市风机厂 | Reversal axial fan |
| CN1697932A (en) * | 2003-06-18 | 2005-11-16 | 三菱电机株式会社 | Blower |
| CN203452031U (en) * | 2013-03-29 | 2014-02-26 | 南京德朔实业有限公司 | Handheld air blower |
| CN204175643U (en) * | 2014-09-30 | 2015-02-25 | 美的集团武汉制冷设备有限公司 | Axial-flow windwheel and the air conditioner with it |
| CN105402160A (en) * | 2015-12-18 | 2016-03-16 | 珠海格力电器股份有限公司 | Fan, axial flow fan blade and blade thereof |
| CN205331054U (en) * | 2016-01-29 | 2016-06-22 | 邯郸市东方风机制造有限公司 | Axial -flow fan with many curved surfaces type blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108071091A (en) | 2018-05-25 |
| CN108071090A (en) | 2018-05-25 |
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