Fan blade and hair dryer

Abstract

The present application relates to the technical field of hair dryers, and in particular to a fan blade and a hair dryer, comprising a hub and a plurality of blades, wherein the plurality of blades are arranged equidistantly around the cylindrical surface of the hub, one end of each blade is connected to the hub, and the other end extends toward the outer side of the hub along the radial direction of the hub and is inclined downward; the angle between the line connecting the length direction of the blade and the axis of the hub is angle A, and 45°<angle A<90°; the shape of the blade is a bending and twisting shape that is approximately S-shaped; the bending and twisting angle of the blade gradually changes from the top of the blade to the tip of the blade, and the bending and twisting angle of the tip of the blade is greater than the bending and twisting angle of the top of the blade; a mounting hole is provided at the center of the hub, and the mounting hole is used to mount the fan blade to the positioning shaft of the electrical appliance; the present invention can disperse the wind blown out from the fuselage, and has the effect of making the wind output more uniform and energy-saving.

Description

Technical Field

[0001] The invention relates to the technical field of hair dryers, in particular to a fan blade and a hair dryer. Background Art

[0002] The hair dryers on the market can achieve the air outlet effect with just the body. Usually, an air guide cover and an air outlet mesh cover can be installed outside the exhaust port of the body to make the air blown out have a wider range. However, because the air guide cover is in the shape of a trumpet that expands outward, the air outlet diameter of the air guide cover is larger than the diameter of the exhaust port of the body. When the air guide cover guides the air, the air volume near the middle is much larger than the air volume at the edge, which can easily cause uneven air output from the hair dryer and affect the user experience and effect. Summary of the invention

[0003] In view of the above-mentioned defects, the object of the present invention is to provide a fan blade and a hair dryer, which can disperse the wind blown out from the body, making the wind output more uniform and energy-saving.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A wind blade comprises a hub and a plurality of blades, wherein the plurality of blades are arranged equidistantly around the cylindrical surface of the hub, one end of each blade is connected to the hub, and the other end of each blade extends toward the outer side of the hub in the radial direction of the hub and is inclined downward;

[0006] The shape of the blade is a twisted shape that is approximately S-shaped;

[0007] A mounting hole is provided at the center of the hub, and the mounting hole is used to mount the fan blade on the positioning shaft of the electrical appliance.

[0008] Preferably, the angle between the line in the length direction of the blade and the hub axis is angle A, and 45°<angle A<90°.

[0009] Preferably, the installation angle of the blade is defined as an angle B between a tangent direction of a middle portion of the blade and a radial direction of a hub, and the installation angle range of the blade is 30°<angle B<80°.

[0010] Preferably, the bending and twisting angle of the blade gradually changes from the blade top to the blade tip, and the bending and twisting angle of the blade top is defined as the angle C between the tangent direction of the middle part of the blade top and the radial direction of the hub, and the bending and twisting angle of the blade tip is defined as the angle D between the tangent direction of the middle part of the blade tip and the radial direction of the hub, and the bending and twisting angle of the blade tip is greater than the bending and twisting angle of the blade top.

[0011] A hair dryer, comprising a body, an air guide cover, an air outlet mesh cover and the above-mentioned fan blades;

[0012] The fuselage has a fan inside, and an exhaust port is provided on the side of the fuselage. The fuselage is used to generate wind and exhaust air to the exhaust port;

[0013] The air guide cover is arranged on one side of the air outlet of the fuselage, the air guide cover is provided with an air inlet and an air outlet, the air inlet of the air guide cover is connected to the air outlet of the fuselage, and the diameter of the air outlet is larger than the diameter of the air inlet;

[0014] The air outlet mesh cover is arranged at the air outlet of the air guide cover, and grids for air outlet are evenly distributed on the air outlet mesh cover;

[0015] The fan blade is installed on a side of the air outlet mesh cover close to the air guide cover, and the fan blade is rotatably connected to the air outlet mesh cover.

[0016] Preferably, the diameter of the exhaust port is D1, the diameter of the fan blade is D2, the diameter of the air outlet of the wind guide cover is D3, and the diameters of the exhaust port, the fan blade and the air outlet satisfy the following relationship: D1<D2<D3.

[0017] Preferably, the gap between the fan blade and the air outlet mesh cover and the gap between the fan blade and the air guide cover are both greater than or equal to 2 mm.

[0018] Preferably, the air outlet mesh cover is detachably connected to the air guide cover, the air outlet mesh cover is provided with a clamping piece, the air guide cover is provided with a clamping slot, and the clamping piece is clamped and matched with the clamping slot.

[0019] Preferably, the number of blades of the fan blade is set to be more than three.

[0020] The above technical solution has the following beneficial effects:

[0021] In this embodiment, the blades of the fan blade are bent and twisted to make the overall air output of the fan blade more uniform and discrete, so that it can be used to dissipate heat and disperse wind; the bending and twisting structure of the blade makes the surface of the blade curved, which effectively increases the working area of ​​the blade compared to a flat blade, and can maximize the work in a limited space, thereby saving space and effectively improving the working efficiency of the fan blade.

[0022] In this embodiment, a fan blade is added between the wind guide cover and the air outlet mesh cover of the hair dryer. When the body generates wind, the wind discharged from the body can drive the fan blade to rotate, so as to disperse the wind blown out by the body. At the same time, since the air outlet mesh cover is evenly distributed with grids for air outlet, the wind can be transported to the outside through the air outlet mesh cover when the fan blade rotates, so that the wind originally concentrated in one direction becomes more discrete and uniform after being dispersed by the fan blade, which brings a more comfortable feeling to the human body. In addition, because the fan blade is directly driven to rotate by the wind blown out by the body, no external power is required to start it, so it has an energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the fan blade in the present invention;

[0024] Figure 2 It is a schematic diagram of the dimensions of the fan blades in the present invention;

[0025] Figure 3 is a schematic diagram of the dimensions of the blades in the present invention;

[0026] Figure 4 It is a schematic diagram of the overall structure of the hair dryer in the present invention;

[0027] Figure 5 is an exploded view of the hair dryer of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the air guide cover in the present invention.

[0029] Among them: 1. fan blade; 11. wheel hub; 111. mounting hole; 12. blade; 2. fuselage; 21. exhaust port; 3. air guide cover; 31. air inlet; 32. air outlet; 33. card slot; 4. air outlet mesh cover; 41. card piece; 42. grid. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0032] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Combine the following Figures 1 to 6 A fan blade and a hair dryer according to an embodiment of the present invention are described.

[0035] A wind blade comprises a hub 11 and a plurality of blades 12, wherein the plurality of blades 12 are arranged equidistantly around the cylindrical surface of the hub 11, one end of each blade 12 is connected to the hub 11, and the other end of each blade 12 extends toward the outer side of the hub 11 along the radial direction of the hub 11 and is inclined downward;

[0036] The shape of the blade 12 is a twisted shape that is approximately S-shaped;

[0037] A mounting hole 111 is provided at the center of the hub 11 , and the mounting hole 111 is used to mount the fan blade 1 on a positioning shaft of the electrical appliance.

[0038] Specifically, in this embodiment, the blade 12 is bent and twisted to make the wind output of the fan blade 1 more uniform and discrete, so that it can be used for heat dissipation and wind dispersion; by adding screws in the mounting hole 111, the fan blade 1 is mounted on the positioning axis of the appliance, so that the fan blade 1 can rotate around the positioning axis; in addition, Figure 3 As shown, the bending and twisting structure of the blade 12 makes the surface of the blade 12 a curved surface, which effectively increases the working area of ​​the blade 12 compared to the flat blade 12, and can maximize the work in a limited space, thereby saving space and effectively improving the working efficiency of the wind blade 1.

[0039] Preferably, the angle between the line connecting the blades 12 in the length direction and the axis of the hub 11 is angle A, and 45°<angle A<90°.

[0040] Specifically, the blades 12 extend obliquely downward from the side connected to the hub 11, so that the wind blade 1 is umbrella-shaped as a whole. Compared with the blades 12 on the market that are arranged perpendicular to the axial direction of the hub 11, when the wind from top to bottom and parallel to the axial direction of the hub 11 passes along the surface of the blades 12, the blades 12 inclined obliquely downward have a better flow guidance effect.

[0041] Preferably, the installation angle of the blade 12 is defined as an angle B between a tangent direction of a middle portion of the blade 12 and a radial direction of the hub 11 , and the installation angle range of the blade 12 is 30°<angle B<80°.

[0042] Specifically, the installation angle of the blade 12 is between 30° and 80°, that is, the blade 12 is tilted relative to the hub 11, so that when the wind parallel to the axial direction of the hub 11 blows toward the wind blade 1, the wind flows between the blades 12, and the blades 12 can be pushed by the wind, causing the entire wind blade 1 to start rotating.

[0043] Preferably, the bending and twisting angle of the blade 12 gradually changes from the blade top to the blade tip, and the bending and twisting angle of the blade top is defined as the angle C between the tangent direction of the middle part of the blade top and the radial direction of the hub 11, and the bending and twisting angle of the blade tip is defined as the angle D between the tangent direction of the middle part of the blade tip and the radial direction of the hub 11, and the bending and twisting angle of the blade tip is greater than the bending and twisting angle of the blade top.

[0044] Specifically, the top side of the blade 12 is the side where the blade 12 is connected to the hub 11, and the tip side of the blade 12 is the side where the blade 12 is away from the hub 11. After the blade 12 is bent and twisted, when the fan blade 1 is blown by wind parallel to the axial direction of the hub 11, the fan blade 1 can automatically start to rotate. In addition, when the fan blade 1 rotates, the gradual bending and twisting angle has a better guiding effect on the wind, thereby improving the work efficiency of the fan blade 1.

[0045] A hair dryer, comprising a body 2, an air guide cover 3, an air outlet mesh cover 4 and the above-mentioned fan blade 1;

[0046] The fuselage 2 has a fan inside, and an exhaust port 21 is provided on the side of the fuselage 2. The fuselage 2 is used to generate wind and exhaust air to the side of the exhaust port 21.

[0047] The air guide cover 3 is arranged on one side of the air outlet 21 of the fuselage 2, and the air guide cover 3 is provided with an air inlet 31 and an air outlet 32. The air inlet 31 of the air guide cover 3 is connected to the air outlet 21 of the fuselage 2, and the diameter of the air outlet 32 ​​is greater than the diameter of the air inlet 31.

[0048] The air outlet mesh cover 4 is disposed on the air outlet 32 ​​of the air guide cover 3, and grids 42 for air outlet are evenly distributed on the air outlet mesh cover 4;

[0049] The fan blade 1 is installed on a side of the air outlet mesh cover 4 close to the air guide cover 3 , and the fan blade 1 is rotatably connected to the air outlet mesh cover 4 .

[0050] Specifically, hair dryers on the market can achieve the air outlet effect with only a body 2 , and an air guide cover 3 and an air outlet mesh cover 4 can usually be added to the air outlet 21 of the body 2 to make the air blown out have a wider range.

[0051] In this embodiment, a fan blade 1 is added between the air guide cover 3 and the air outlet mesh cover 4, the inclination angle of the blades in the fan blade 1 is consistent with the inclination angle of the air outlet surface of the air outlet mesh cover 4, and a positioning shaft is provided at the center of the air outlet mesh cover 4, and a bearing is sleeved on the side wall of the positioning shaft. The fan blade 1 is sleeved on the positioning shaft through the mounting hole 111, and a screw is inserted into the mounting hole 111 of the fan blade 1. The screw is fixedly connected to the positioning shaft to limit the fan blade 1, so that the fan blade 1 can rotate normally around the positioning shaft. When the fuselage 2 generates wind, the wind discharged from the fuselage 2 can drive the fan blades 1 to rotate, and can disperse the wind blown out by the fuselage 2. At the same time, since the grids 42 for air outlet are evenly distributed on the air outlet mesh cover 4, the wind can also be transported to the outside through the air outlet mesh cover 4 when the fan blades 1 rotate, so that the wind originally concentrated in one direction becomes more discrete and uniform after being dispersed by the fan blades 1, which brings a more comfortable feeling to the human body. In addition, because the fan blades 1 are directly driven to rotate by the wind blown out by the fuselage 2, no external power is required to start them, so they have an energy-saving effect.

[0052] Preferably, the diameter of the exhaust port 21 is D1, the diameter of the fan blade 1 is D2, the diameter of the air outlet 32 ​​of the wind guide cover 3 is D3, and the diameters of the exhaust port 21, the fan blade 1, and the air outlet 32 ​​satisfy the following relationship: D1<D2<D3.

[0053] Specifically, the diameter of the fan blade 1 is larger than the diameter of the exhaust port 21, so that the fan blade 1 can completely cover the exhaust port 21 and fully disperse the wind blown out from the fuselage 2. The diameter of the air outlet 32 ​​of the wind guide cover 3 is larger than the diameter of the fan blade 1, so that the fan blade 1 can rotate in the wind guide cover 3 and fully blow the dispersed wind out from the air outlet 32.

[0054] Preferably, the gap between the fan blade 1 and the air outlet mesh cover 4 and the gap between the fan blade 1 and the air guide cover 3 are both greater than or equal to 2 mm.

[0055] Specifically, gaps are reserved between the fan blade 1 and the air outlet mesh cover 4 and the air guide cover 3, so that the fan blade 1 can rotate normally between the air outlet mesh cover 4 and the air guide cover 3 to avoid accidental touch.

[0056] Preferably, the air outlet mesh cover 4 is detachably connected to the air guide cover 3 , the air outlet mesh cover 4 is provided with a clamping piece 41 , the air guide cover 3 is provided with a clamping slot 33 , and the clamping piece 41 is clamped and matched with the clamping slot 33 .

[0057] Specifically, a clamp 41 is provided on the outer peripheral edge of the side of the air outlet mesh cover 4 close to the air guide cover 3, and the clamp 41 extends in the direction close to the air guide cover 3. A clamping groove 33 adapted to the shape of the clamp 41 is provided on the outer peripheral edge of the side of the air guide cover 3 close to the air outlet mesh cover 4, so that the air outlet mesh cover 4 and the air guide cover 3 are snap-fitted together, which is convenient for disassembly of the air outlet mesh cover 4 and has the function of facilitating cleaning or replacement of the fan blades 1 on the air outlet mesh cover 4.

[0058] Preferably, the number of blades 12 of the fan blade 1 is set to be three or more.

[0059] Specifically, in this embodiment, nine blades 12 are provided on one fan blade 1, so that the fan blade 1 can be driven by the wind blown out by the fuselage 2, and the blades 12 can disperse the wind, thereby achieving a more uniform wind output effect.

[0060] The other structures and operations of the fan blade and the hair dryer according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0061] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fan blade, characterized in that: It comprises a hub and a plurality of blades, wherein the plurality of blades are arranged equidistantly around the cylindrical surface of the hub, one end of each blade is connected to the hub, and the other end of each blade extends toward the outer side of the hub along the radial direction of the hub and is inclined toward the downstream of the airflow direction; The shape of the blade is a twisted shape that is approximately S-shaped; A mounting hole is provided at the center of the hub, and the mounting hole is used to mount the fan blade on the positioning shaft of the electrical appliance; The angle between the line in the length direction of the blade and the axis of the hub is angle A, the length direction of the blade is the direction from the top of the blade to the tip of the blade, the top side of the blade is the side where the blade is connected to the hub, the tip side of the blade is the side where the blade is away from the hub, and 45°<angle A<90°; The installation angle of the blade is defined as the angle B between the tangent direction of the middle of the blade and the plane where the radial direction of the hub is located, the tangent direction of the middle of the blade is the tangent direction of the middle of the blade body, and the installation angle range of the blade is 30°<angle B<80°; The bending and twisting angle of the blade gradually changes from the blade top to the blade tip. The bending and twisting angle of the blade top is defined as the angle C between the tangent direction of the middle part of the blade top and the plane where the radial direction of the hub is located, and the bending and twisting angle of the blade tip is defined as the angle D between the tangent direction of the middle part of the blade tip and the plane where the radial direction of the hub is located. The bending and twisting angle of the blade tip is greater than the bending and twisting angle of the blade top.

2. A hair dryer, characterized in that: It comprises a body, an air guide cover, an air outlet mesh cover and the fan blades as claimed in claim 1; The fuselage has a fan inside, and an exhaust port is provided on the side of the fuselage. The fuselage is used to generate wind and exhaust air to the exhaust port; The air guide cover is arranged on one side of the air outlet of the fuselage, the air guide cover is provided with an air inlet and an air outlet, the air inlet of the air guide cover is connected to the air outlet of the fuselage, and the diameter of the air outlet is larger than the diameter of the air inlet; The air outlet mesh cover is arranged at the air outlet of the air guide cover, and grids for air outlet are evenly distributed on the air outlet mesh cover; The fan blade is installed on a side of the air outlet mesh cover close to the air guide cover, and the fan blade is rotatably connected to the air outlet mesh cover. The inclination angle of the blade in the fan blade is consistent with the inclination angle of the air outlet surface of the air outlet mesh cover.

3. A hair dryer according to claim 2, characterized in that: The diameter of the exhaust port is D1, the diameter of the fan blade is D2, the diameter of the air outlet of the wind guide cover is D3, and the diameters of the exhaust port, the fan blade and the air outlet satisfy the following relationship: D1<D2<D3.

4. A hair dryer according to claim 3, characterized in that: The gap between the fan blade and the air outlet mesh cover and the gap between the fan blade and the air guide cover are both greater than or equal to 2 mm.

5. A hair dryer according to claim 2, characterized in that: The air outlet mesh cover is detachably connected to the air guide cover, the air outlet mesh cover is provided with a clamping piece, the air guide cover is provided with a clamping slot, and the clamping piece is clamped and matched with the clamping slot.

6. A hair dryer according to claim 2, characterized in that: The number of blades of the fan blade is set to be more than three.

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