Portable fan and fan body

Abstract

The invention provides a portable fan which comprises a shell, an air inlet, an air outlet and an air duct connected with the air inlet and the air outlet, and the air duct extends in the length direction of the shell; the motor is arranged in the air duct, the motor is a three-phase high-speed motor, and the motor comprises a stator assembly, a rotor assembly and a fan body; the air blocking piece is arranged in the air duct and divides the air duct into a sub air duct and a containing cavity; and air generated when the fan body rotates is blown out from the air outlet through the sub air ducts. The air blocking piece is arranged in the air duct and divides the air duct into the sub-air ducts, the size of the sub-air ducts is smaller than that of the air duct, air generated by the fan body is more concentrated after entering the sub-air ducts, and the air force blown out of the air outlet is larger; and moreover, the three-phase high-speed motor is used, so that the ultra-high-speed rotating blowing experience can be ensured on the basis of meeting the requirements of small size and convenience in carrying.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a portable fan with excellent air outlet performance. Background Art

[0002] In recent years, as people's demand for portable hair-drying equipment has become increasingly higher, a wide variety of portable fans with rich categories and various forms have appeared on the market, such as neck-hanging fans, handheld fans, clip fans, etc.

[0003] However, after meeting the requirements of portability, existing portable fans are difficult to ensure wind force, air volume and wind efficiency. Portable fans with low wind force, insufficient air volume and low wind efficiency often give users a negative experience. Therefore, how to simultaneously meet the requirements of portability and excellent air output performance is an urgent problem that needs to be solved for portable fans. Summary of the invention

[0004] In view of this, the present application provides a portable fan, in which a wind shield is arranged in the air duct to divide the air duct into sub-air ducts. The volume of the sub-air ducts is reduced relative to the volume of the air duct. The wind generated by the fan body is more concentrated after entering the sub-air duct, and the wind blown out from the air outlet is also stronger. In addition, a three-phase high-speed motor is used to ensure an ultra-high-speed rotation and blowing experience while meeting the requirements of a small size and easy portability.

[0005] The present application provides a portable fan, comprising: a shell, comprising an air inlet, an air outlet, and an air duct connecting the air inlet and the air outlet, wherein the air duct extends along the length direction of the shell; a motor, arranged in the air duct, the motor is a three-phase high-speed motor, and the motor comprises a stator assembly, a rotor assembly and a fan body; a wind shield, arranged in the air duct, the wind shield divides the air duct into a sub-air duct and a cavity; wherein the wind generated when the fan body rotates passes through the sub-air duct and is blown out from the air outlet.

[0006] Furthermore, the wind shield includes a first partition extending along the length direction of the air duct, and a second partition connected to one end of the first partition facing the motor, one end of the second partition is connected to the first partition, and the other end of the second partition abuts against a portion of the side wall of the air duct, thereby forming the sub-air duct between the wind shield and the other portion of the side wall of the air duct.

[0007] Furthermore, the wind shield includes a first partition extending along the length direction of the air duct, and a second partition connected to one end of the first partition facing the motor, both ends of the second partition are connected to the first partition, one end of the first partition is connected to the second partition, and the other end of the first partition abuts against a portion of the side wall of the air duct, thereby forming the sub-air duct between the wind shield and the other portion of the side wall of the air duct.

[0008] Furthermore, the cavity is not connected to the sub-air duct, and a power supply and a first circuit board electrically connected to the motor are provided in the cavity. The first circuit board is also electrically connected to a switch and an interface exposed outside the shell.

[0009] Furthermore, the shell includes a first shell and a second shell, the first shell and the second shell are connected to form the air duct together, and the wind shield is formed by extending integrally from the inner wall of the first shell and / or the second shell.

[0010] Furthermore, the shell includes a first shell and a second shell, an inner shell is further provided in the shell, the air duct is formed in the inner shell, and the wind shield is arranged in the air duct of the inner shell.

[0011] Furthermore, the motor includes a cylinder body, which includes an inner ring portion, an outer ring portion, and a plurality of connecting leaves connecting the inner ring portion and the outer ring portion, a substrate is formed in the inner ring portion, and a hollow shaft cylinder extends axially from the substrate in a first direction; a second circuit board is installed at one end of the inner ring portion facing away from the shaft cylinder, the second circuit board is electrically connected to the first circuit board, and the second circuit board is electrically connected to the stator assembly, and drives the rotor assembly to rotate, and the stator assembly, the rotor assembly and the shaft cylinder are nested.

[0012] Furthermore, the rotor assembly includes a rotating shaft, a bearing and a magnetic ring, the bearing sleeve is arranged on the outside of the rotating shaft, one end of the rotating shaft extends into the shaft tube in a second direction opposite to the first direction, the stator assembly is arranged on the radial outside of the shaft tube, the magnetic ring is arranged on the radial outside of the stator assembly, and the other end of the rotating shaft fixes the fan body; the motor is arranged at a position of the air duct close to the air inlet, and the cross-sectional area of ​​the sub-duct close to the air outlet is smaller than the cross-sectional area of ​​the sub-duct close to the motor.

[0013] Furthermore, a partition is provided in the shell, and the partition divides the internal space of the shell into the air duct and the partition chamber; part of the edge of the wind shield abuts against the inner wall of the shell, and part of the edge of the wind shield abuts against the partition; it also includes a power supply and a first circuit board, the power supply is electrically connected to the first circuit board, and the power supply and the first circuit board are arranged in the partition chamber and / or the containing chamber.

[0014] The present application also provides a fan body, which is applied to the portable fan as described above, and the fan body includes a hub and a plurality of blades arranged around the outside of the hub. The outer side surface of the hub is arc-shaped, and the hub radially increases and extends along the second direction.

[0015] Compared with the prior art, the portable fan of the present application has the following beneficial effects: the wind shield is arranged in the air duct to divide the air duct into the sub-air ducts, the volume of the sub-air ducts is reduced relative to the volume of the air duct, the wind generated by the fan body is more concentrated after entering the sub-air ducts, and the wind blown out from the air outlet is also stronger; and, by using a three-phase high-speed motor, an ultra-high-speed rotation and blowing experience can be guaranteed while meeting the requirements of a small size and easy portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional diagram of a portable fan provided in an embodiment of the present application;

[0017] Figure 2 is a cross-sectional view of a portable fan provided in an embodiment of the present application;

[0018] Figure 3 is a three-dimensional diagram of a motor provided in an embodiment of the present application;

[0019] Figure 4 is a cross-sectional view of a motor provided in an embodiment of the present application;

[0020] Figure 5 is a cross-sectional view of a portable fan provided in another embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to facilitate a better understanding of the purpose, structure, features, and functions of the present application, the present application is further described in conjunction with the accompanying drawings and specific implementation methods.

[0022] It should be noted that when an element is considered to be “connected to” another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0023] In this application, descriptions such as “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0024] In the description of the present application, the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0025] In one embodiment, Figure 1 and Figure 2 As shown, it is a schematic diagram of the portable fan of the present application, the portable fan comprises a housing 1, the housing 1 comprises an air inlet 11, an air outlet 12, and an air duct 13 connecting the air inlet 11 and the air outlet 12, the air duct 13 extends along the length direction of the housing 1. In the present embodiment, the housing 1 is in the shape of a long column, of course, in other embodiments, the housing 1 may also be in the shape of a long square, or other irregular shapes, which are not limited to the examples. In addition, in the present embodiment, the portable fan may be a handheld fan, and in other embodiments, the portable fan may also be a desktop fan body, a neck hanging fan or other fan body, which are not limited to the examples.

[0026] In one embodiment, Figures 2 to 4 As shown, the portable fan also includes a motor. The motor is arranged in the air duct 13, and the motor is a three-phase high-speed motor. The three-phase high-speed motor has the advantages of high efficiency, low energy consumption, low noise, ultra-long life, high reliability, etc. The three-phase high-speed motor can provide a high-speed and stable rotation speed. The motor also includes a barrel 2, and the barrel 2 includes an inner ring portion 22, an outer ring portion 21, and a plurality of connecting leaves 23 connecting the inner ring portion 22 and the outer ring portion 21. A substrate 24 is formed in the inner ring portion 22, and a hollow shaft cylinder 25 axially extending from the substrate 24 in a first direction. The motor also includes a stator assembly 4, a rotor assembly 5 and a fan body 6, and the stator assembly 4, the rotor assembly 5 and the shaft cylinder 25 are nested. In this embodiment, the first direction is parallel to the length direction of the shell 1. In other embodiments, the first direction may also be non-parallel to the length direction of the shell 1.

[0027] In one embodiment, Figures 2 to 4As shown, the rotor assembly 5 includes a rotating shaft 51, a bearing 52 and a magnetic ring 53, the bearing 52 is sleeved on the outside of the rotating shaft 51, one end of the rotating shaft 51 extends into the shaft cylinder 25 in a second direction opposite to the first direction, the stator assembly 4 is arranged on the radial outside of the shaft cylinder 25, the magnetic ring 53 is arranged on the radial outside of the stator assembly 4, and the other end of the rotating shaft 51 is fixed to the fan body 6. That is, the motor is an outer rotor motor, which has the advantages of compact structure, easy installation, reliable operation, low noise, energy saving and high efficiency. In this embodiment, the first direction and the second direction are parallel to the axial direction.

[0028] In one embodiment, Figures 2 to 4 The portable fan further comprises a power supply 8 and a first circuit board 9 electrically connected to the motor. The first circuit board 9 is also electrically connected to a switch 91 and an interface 92 exposed outside the housing 1 .

[0029] In one embodiment, Figures 2 to 4 As shown, the motor also includes a second circuit board 3, which is installed at one end of the inner ring portion 22 facing away from the shaft cylinder 25. The second circuit board 3 is electrically connected to the stator assembly 4 and drives the rotor assembly 5 to rotate. The rotor assembly 5 is directly connected to the fan body 6, and the rotor assembly 5 directly drives the fan body 6 to rotate. The stator assembly 4 is composed of a winding coil, and the wire of the winding coil is led out and passes through the substrate 24 and fixed to the second circuit board 3, thereby realizing the electrical connection between the second circuit board 3 and the stator assembly 4. Compared with the traditional form of setting a steel needle on the stator assembly 4 and inserting the steel needle into the circuit board, the present application directly leads the wire of the winding coil to the circuit board, and the production process is simpler and more convenient, and the second circuit board 3 can be flexibly set at various positions of the portable fan. The first circuit board 9 is electrically connected to the second circuit board 3, and the interface 92 is connected to an external power supply, so that the external power supply can directly supply power to the motor, thereby ensuring the endurance of the motor. The power supply 8 is electrically connected to the second circuit board 3 via the first circuit board 9 , so when no external power source is connected, the power supply 8 can supply power to the motor.

[0030] In one embodiment, Figures 2 to 4As shown, the portable fan also includes a windshield 7, which is arranged in the air duct 13, dividing the air duct 13 into a sub-air duct 15 and a cavity 14. The wind generated by the rotation of the fan body 6 is blown out from the air outlet 12 via the sub-air duct 15, that is, the wind flows through the air inlet 11, the air duct 13, the sub-air duct 15, and the air outlet 12 in sequence. The windshield 7 is arranged in the air duct 13 to divide the air duct 13 into the sub-air ducts 15. The volume of the sub-air duct 15 is reduced relative to the volume of the air duct 13. The wind generated by the fan body 6 is more concentrated after entering the sub-air duct 15, and the wind force blown out from the air outlet 12 is also greater. In addition, the motor used is a three-phase high-speed motor, which can ensure an ultra-high-speed rotation and blowing experience on the basis of satisfying the small size and easy to carry.

[0031] In one embodiment, Figure 4 As shown, the wind shield 7 includes a first partition 71 extending along the length direction of the air duct 13, and a second partition 72 connected to one end of the first partition 71 facing the motor. One end of the second partition 72 is connected to the first partition 71, and the other end of the second partition 72 abuts against a part of the side wall of the air duct 13, so that the sub-air duct 15 is formed between the wind shield 7 and another part of the side wall of the air duct 13. In another embodiment, as Figure 5 As shown, the wind shield 7 includes a first partition 71 extending along the length direction of the air duct 13, and a second partition 72 connected to one end of the first partition 71 facing the motor. Both ends of the second partition 72 are connected to the first partition 71, one end of the first partition 71 is connected to the second partition 72, and the other end of the first partition 71 abuts against a part of the side wall of the air duct 13, so that the sub-air duct 15 is formed between the wind shield 7 and another part of the side wall of the air duct 13.

[0032] In one embodiment, Figure 2 and Figure 5 As shown, the cavity 14 is not connected to the sub-air duct 15. The power supply 8 and the first circuit board 9 are arranged in the cavity 14, and the cavity 14 is not connected to the sub-air duct 15, so as to prevent moisture, dust and impurities from entering the cavity 14 and damaging the power supply 8 or the first circuit board 9, which is beneficial to prolonging the service life of the power supply 8 and the first circuit board 9.

[0033] In one embodiment, Figure 1As shown, the shell 1 includes a first shell 1a and a second shell 1b, and the first shell 1a and the second shell 1b are connected to form the air duct 13. Part of the windshield 7 is formed by extending from the inner wall of the first shell 1a, and part of the windshield 7 is formed by extending from the inner wall of the second shell 1b. In other embodiments, the entire windshield 7 may be formed by extending from the inner wall of the first shell 1a, or the entire windshield 7 may be formed by extending from the inner wall of the second shell 1b, or the windshield 7 may be formed separately and then abut the inner wall of the shell 1. In another embodiment, the shell 1 includes a first shell 1a and a second shell 1b, and an inner shell is further provided in the shell 1, and the air duct 13 is formed in the inner shell, and the windshield 7 is arranged in the air duct 13 of the inner shell, and the windshield 7 may be formed by extending from the inner wall of the inner shell, or may be formed separately and then abut the inner wall of the inner shell.

[0034] In one embodiment, the motor is disposed in the air duct 13 near the air inlet 11, and the cross-sectional area of ​​the sub-air duct 15 near the air outlet 12 is smaller than the cross-sectional area of ​​the sub-air duct 15 near the motor, so that the air outlet is more concentrated and efficient.

[0035] In one embodiment, Figure 2 and Figure 4 As shown, the fan body 6 includes a hub 61 and a plurality of blades 62 arranged around the outside of the hub 61. The outer side surface of the hub 61 is arc-shaped, and the hub 61 radially increases and extends along the second direction, that is, the outer side surface of the hub 61 is arc-shaped and expands outward, and the shape of the hub 61 has the effect of enhancing wind pressure.

[0036] In one embodiment, a partition (not shown in the figure, the same below) is further provided in the shell 1, and the partition divides the internal space of the shell 1 into the air duct 13 and the partition cavity (not shown in the figure, the same below), and the wind shield 7 further divides the air duct 13 into the sub-air duct 15 and the receiving cavity 14. Through two divisions, the volume of the sub-air duct 15 is further reduced, making the air outlet more concentrated. Part of the edge of the wind shield 7 abuts against the inner wall of the shell 1, and part of the edge of the wind shield 7 abuts against the partition. In this embodiment, the power supply 8 and the first circuit board 9 can be arranged in the partition cavity or the receiving cavity 14, or one of the power supply 8 and the first circuit board 9 can be arranged in the partition cavity, and the other can be arranged in the receiving cavity 14.

[0037] The above detailed description is only an explanation of the preferred embodiment of the present application, and does not limit the patent scope of the present application. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. A portable fan, characterized in that: include: A shell, comprising an air inlet, an air outlet, and an air duct connecting the air inlet and the air outlet, wherein the air duct extends along the length direction of the shell; A motor is arranged in the air duct, wherein the motor is a three-phase high-speed motor and comprises a stator assembly, a rotor assembly and a fan body; A wind shield is disposed in the air duct, and the wind shield divides the air duct into a sub-air duct and a cavity; The wind generated when the fan body rotates passes through the sub-air duct and is blown out from the air outlet.

2. The portable fan according to claim 1, characterized in that: The wind shield includes a first partition extending along the length direction of the air duct, and a second partition connected to one end of the first partition facing the motor, one end of the second partition is connected to the first partition, and the other end of the second partition abuts against a portion of the side wall of the air duct, thereby forming the sub-air duct between the wind shield and the other portion of the side wall of the air duct.

3. The portable fan according to claim 1, characterized in that: The wind shield includes a first partition extending along the length direction of the air duct, and a second partition connected to one end of the first partition facing the motor, both ends of the second partition are connected to the first partition, one end of the first partition is connected to the second partition, and the other end of the first partition abuts against a portion of the side wall of the air duct, so that the sub-air duct is formed between the wind shield and the other portion of the side wall of the air duct.

4. The portable fan according to claim 2 or 3, characterized in that: The cavity is not connected to the sub-air duct, and a power supply and a first circuit board electrically connected to the motor are arranged in the cavity. The first circuit board is also electrically connected to a switch and an interface exposed outside the shell.

5. The portable fan according to claim 1, characterized in that: The shell includes a first shell and a second shell. The first shell and the second shell are connected to form the air duct. The wind shield is integrally extended from the inner wall of the first shell and / or the second shell.

6. The portable fan according to claim 1, characterized in that: The shell comprises a first shell and a second shell. An inner shell is further provided in the shell. The air duct is formed in the inner shell. The wind shield is arranged in the air duct of the inner shell.

7. The portable fan according to claim 1, characterized in that: The motor includes a cylinder body, which includes an inner ring portion, an outer ring portion, and a plurality of connecting leaves connecting the inner ring portion and the outer ring portion. A substrate is formed in the inner ring portion, and a hollow shaft cylinder extends axially from the substrate in a first direction; a second circuit board is installed at an end of the inner ring portion facing away from the shaft cylinder, the second circuit board is electrically connected to the first circuit board, and the second circuit board is electrically connected to the stator assembly and drives the rotor assembly to rotate, and the stator assembly, the rotor assembly and the shaft cylinder are nested.

8. The portable fan according to claim 7, characterized in that: The rotor assembly includes a rotating shaft, a bearing and a magnetic ring, the bearing sleeve is arranged on the outside of the rotating shaft, one end of the rotating shaft extends into the shaft tube in a second direction opposite to the first direction, the stator assembly is arranged on the radial outside of the shaft tube, the magnetic ring is arranged on the radial outside of the stator assembly, and the other end of the rotating shaft fixes the fan body; the motor is arranged at a position of the air duct close to the air inlet, and the cross-sectional area of ​​the sub-air duct close to the air outlet is smaller than the cross-sectional area of ​​the sub-air duct close to the motor.

9. The portable fan according to claim 1, characterized in that: The shell is also provided with a partition, which divides the internal space of the shell into the air duct and the partition chamber; part of the edge of the wind shield abuts against the inner wall of the shell, and part of the edge of the wind shield abuts against the partition; it also includes a power supply and a first circuit board, the power supply is electrically connected to the first circuit board, and the power supply and the first circuit board are arranged in the partition chamber and / or the containing chamber.

10. A fan body, applied to the portable fan according to any one of claims 1 to 9, characterized in that: The fan body includes a hub and a plurality of blades arranged around the outer side of the hub. The outer side surface of the hub is arc-shaped, and the hub radially increases and extends along the second direction.

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