Motor and blower

Abstract

The utility model relates to a motor and a blower, the motor comprises a rotating shaft, a magnetic conductive layer and a magnetic layer, and the rotating shaft is used for outputting motor power; the magnetic conductive layer is sleeved on the side wall of the rotating shaft; the magnetic layer is arranged on the outer side wall of the magnetic conductive layer in a sleeving mode, and magnetic lines of force of the magnetic layer penetrate through the magnetic conductive layer. In the invention, the magnetic conductive layer arranged in the magnetic layer provides a channel with high magnetic conductivity for the magnetic lines generated by the magnetic layer, so that more magnetic lines generated by the magnetic layer can penetrate through the inner side of the magnetic layer, the magnetic loss is reduced, and a complete closed-loop magnetic path is further formed, so that under the condition that the magnetic layer is not changed, the magnetic conductivity of the magnetic layer is improved. The acting force between the rotor and the stator is increased, and the torque of the motor is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of electrical appliances, and in particular to a motor and a hair dryer. Background Art

[0002] Hair dryers are currently common household appliances. For hair dryers, blowing efficiency is an important indicator for evaluating their performance. There are generally two ways to improve the blowing efficiency of hair dryers: one is to increase the speed of the hair dryer motor, and the other is to increase the windward angle of the fan blades.

[0003] At present, the motor speed of hair dryers has reached more than 100,000 rpm, which produces a lot of noise and affects the user experience. Therefore, the method of increasing the motor speed has relatively large defects. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a motor and a hair dryer.

[0005] According to a first aspect of an embodiment of the present disclosure, a motor is provided, comprising a stator and a rotor, wherein the rotor is arranged inside the stator, and the rotor comprises a rotating shaft, a magnetic conductive layer and a magnetic layer. The rotating shaft is used to output motor power; the magnetic conductive layer is sleeved on the side wall of the rotating shaft; the magnetic layer is sleeved on the outer side wall of the magnetic conductive layer, wherein the magnetic lines of force of the magnetic layer pass through the magnetic conductive layer.

[0006] In some embodiments, the magnetic lines of force emitted by the magnetic layer enter the magnetic conductive layer from the peripheral side wall of the magnetic conductive layer, pass through the magnetic conductive layer along the radial cross section of the magnetic conductive layer, and return to the magnetic layer.

[0007] In some embodiments, the magnetic conductive layer is configured as a multilayer structure radially arranged along the magnetic layer, and the magnetic conductive layer includes one layer selected from the group consisting of an iron layer, a low carbon steel layer, a silicon-iron alloy layer, a nickel-iron alloy layer, an iron-aluminum alloy layer, an iron-silicon-aluminum alloy layer, an iron-cobalt alloy layer, a soft magnetic ferrite layer, an amorphous soft magnetic alloy layer, and an ultra-fine crystal soft magnetic alloy layer;

[0008] Or the magnetic conductive layer is formed by stacking multiple layers of iron layer, low carbon steel layer, ferrosilicon alloy layer, nickel-iron alloy layer, iron-aluminum alloy layer, iron-silicon-aluminum alloy layer, iron-cobalt alloy layer, soft magnetic ferrite layer, amorphous soft magnetic alloy layer, and ultrafine crystal soft magnetic alloy layer.

[0009] In some embodiments, the magnetic conductive layer includes a plurality of solid annular magnetic conductive sheets, the plurality of the annular magnetic conductive sheets are sleeved on the peripheral side wall of the rotating shaft, and the plurality of the annular magnetic conductive sheets are continuously arranged along the axial direction of the rotating shaft.

[0010] In some embodiments, the annular magnetic conductive sheet is a silicon steel sheet.

[0011] In some embodiments, the magnetic conductive layer includes a solid cylindrical magnetic conductive member with closed peripheral side walls and open ends, and the cylindrical magnetic conductive member is sleeved on the peripheral side walls of the rotating shaft.

[0012] In some embodiments, the cylindrical magnetic conductive member is a low-carbon steel plate wound around the circumferential side wall of the rotating shaft.

[0013] In some embodiments, the magnetic layer includes a cylindrical magnetic member sleeved on the outer peripheral side wall of the magnetic conductive layer, and the cylindrical magnetic member has a closed peripheral side wall and openings at both ends.

[0014] In some embodiments, the cylindrical magnetic component includes a plurality of arc-shaped magnetic tiles extending axially along the magnetic conductive layer and surrounding the magnetic conductive layer circumferentially. The plurality of arc-shaped magnetic tiles are spliced ​​circumferentially along the magnetic conductive layer to form a closed cylindrical magnetic component.

[0015] In some embodiments, the length of the magnetic conductive layer is greater than or equal to the length of the magnetic layer, and the magnetic conductive layer is flush with both ends of the magnetic layer in the axial direction of the rotating shaft, or at least one end of the magnetic conductive layer protrudes from the magnetic layer.

[0016] In some embodiments, the magnetic conductive layer is in contact with the rotating shaft, and the magnetic conductive layer is in contact with the magnetic layer.

[0017] In some embodiments, a first limiting groove and a first limiting edge that cooperate with each other and extend axially along the rotating shaft are provided between the rotating shaft and the magnetic conductive layer, and / or a second limiting groove and a second limiting edge that cooperate with each other and extend axially along the magnetic conductive layer are provided between the magnetic conductive layer and the magnetic layer.

[0018] According to a second aspect of an embodiment of the present disclosure, a hair dryer having the motor of the present invention is provided, including the hair dryer of the present invention.

[0019] In some embodiments, the hair dryer includes a power supply component that can store electrical energy, and the power supply component is electrically connected to the motor.

[0020] In some embodiments, the hair dryer is a cordless hair dryer.

[0021] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the magnetic conductive layer arranged in the magnetic layer provides a high magnetic permeability channel for the magnetic lines of force generated by the magnetic layer, so that more magnetic lines of force generated by the magnetic layer can pass through the inside of the magnetic layer and reduce magnetic loss, thereby forming a complete closed-loop magnetic path, thereby increasing the force between the rotor and the stator while keeping the magnetic layer unchanged, thereby improving the torque of the motor.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] Figure 1 It is a schematic diagram of a partial structure of a motor according to an exemplary embodiment.

[0025] Figure 2 is a cross-sectional view of a motor according to an exemplary embodiment.

[0026] Figure 3 It is a schematic diagram of a partial structure of a rotor according to an exemplary embodiment.

[0027] Figure 4 It is a schematic diagram of a partial structure of a rotor according to an exemplary embodiment.

[0028] Figure 5 It is a schematic structural diagram of a rotor according to an exemplary embodiment.

[0029] Figure 6 According to an exemplary embodiment, Figure 1 Enlarged view of point A in the middle.

[0030] Figure 7 It is a schematic structural diagram of a rotor according to an exemplary embodiment.

[0031] Figure 8 It is a partial structural schematic diagram of a hair dryer according to an exemplary embodiment.

[0032] Figure numerals: 1. stator; 11. stator winding; 12. stator core; 2. rotor; 21. rotating shaft; 211. first limiting edge; 22. magnetic conductive layer; 22-1. annular magnetic conductive sheet; 22-2 cylindrical magnetic conductive part; 221. first limiting groove; 222. second limiting edge; 23. magnetic layer; 23-1. arc-shaped magnetic tile; 231. second limiting groove; 232. magnetic lines of force; 3. impeller; 4. air duct shell. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0034] The embodiment of the present disclosure provides a motor, the motor includes a stator and a rotor, the rotor is arranged in the stator, and the rotor includes a rotating shaft, a magnetic conductive layer and a magnetic layer. The rotating shaft is used to output the power of the motor; the magnetic conductive layer is sleeved on the side wall of the rotating shaft; the magnetic layer is sleeved on the outer side wall of the magnetic conductive layer, wherein the magnetic lines of force of the magnetic layer pass through the magnetic conductive layer.

[0035] In this embodiment, the magnetic conductive layer arranged in the magnetic layer provides a high magnetic permeability channel for the magnetic lines of force of the magnetic layer, so that more magnetic lines of force generated by the magnetic layer pass through the magnetic conductive layer, reducing magnetic loss, thereby increasing the force between the rotor and the stator while the magnetic layer remains unchanged, thereby improving the torque output by the motor.

[0036] Figure 1 is a partial structural schematic diagram of a motor according to an exemplary embodiment. Figure 2 is a cross-sectional view of a motor according to an exemplary embodiment. Figure 1 , Figure 2 As shown, the motor includes a stator 1 and a rotor 2, wherein the rotor 2 is disposed inside the stator 1, and the rotor 2 includes a rotating shaft 21, a magnetic conductive layer 22, and a magnetic layer 23. The rotating shaft 21 is used to output motor power; the magnetic conductive layer 22 is sleeved on the side wall of the rotating shaft 21; the magnetic layer 23 is sleeved on the outer side wall of the magnetic conductive layer 22, wherein the magnetic lines of force 232 of the magnetic layer 23 pass through the magnetic conductive layer 22.

[0037] In this embodiment, the magnetic conductive layer 22 arranged in the magnetic layer 23 provides a high magnetic permeability channel for the magnetic lines of force 232 of the magnetic layer 23, so that more magnetic lines of force 232 generated by the magnetic layer 23 pass through the magnetic conductive layer 22, thereby reducing magnetic loss, thereby increasing the force between the rotor 2 and the stator 1 when the magnetic layer 23 remains unchanged, thereby improving the torque output by the motor.

[0038] At the same time, because the torque of the motor increases, when used as a hair dryer motor, the speed of the motor can be reduced while the blowing efficiency remains unchanged, thereby extending the service life of the shaft 21, and the heat generation of the motor will also decrease synchronously, thereby reducing the heat loss of electric energy. If the speed of the motor remains unchanged, the blowing efficiency of the hair dryer can be significantly improved.

[0039] In some embodiments, the rotating shaft 21 is made of a relatively high-strength material, such as high-carbon steel, chromium-containing alloy steel, etc., which generally has a relatively low magnetic permeability.

[0040] In some embodiments, the magnetic layer 23 is generally made of permanent magnets, such as rare earth permanent magnets, and may also be made of other magnetic materials, which is not limited in the present disclosure.

[0041] In some embodiments, the motor may use a brushless motor, which has a simple structure and a long service life.

[0042] In some embodiments, Figure 2 As shown, the magnetic lines of force 232 emitted by the magnetic layer 23 can enter the magnetic layer 22 from the peripheral side wall of the magnetic layer 22 , pass through the magnetic layer 22 along the radial cross section of the magnetic layer 22 and return to the magnetic layer 23 .

[0043] In this embodiment, the magnetic conductive layer 22 is made of a material with high magnetic permeability. When the magnetic lines of force 232 pass through the magnetic conductive layer 22 , the magnetic loss is small, and a high magnetic field strength can be maintained, thereby increasing the torque of the motor.

[0044] In this embodiment, the magnetic lines of force 232 emitted by the magnetic layer 23 can pass through the radial cross section of the magnetic conductive layer 22, but this does not mean that all the magnetic lines of force 232 emitted by the magnetic layer 23 must only pass through the magnetic conductive layer 22, and some of the magnetic lines of force 232 may only pass through the inside of the magnetic layer 23 or other spaces. Some of the magnetic lines of force 232 may also pass through the shaft 21 or other spaces when passing through the magnetic conductive layer 22. As long as some of the magnetic lines of force 232 can pass through the radial cross section of the magnetic conductive layer 22 and reduce the magnetic loss of these parts of the magnetic lines of force 232, it will be sufficient.

[0045] In some embodiments, the magnetic conductive layer 22 is configured as a multi-layer structure radially arranged along the magnetic layer 23. For example, the magnetic conductive layer 22 includes a pure iron layer, a low carbon steel layer, a silicon-iron alloy layer, a nickel-iron alloy layer, an iron-aluminum alloy layer, an iron-silicon-aluminum alloy layer, an iron-cobalt alloy layer, a soft magnetic ferrite layer, an amorphous soft magnetic alloy layer, and an ultrafine crystal soft magnetic alloy layer.

[0046] Alternatively, the magnetic conductive layer 22 is formed by stacking multiple layers of iron layer, low carbon steel layer, ferrosilicon alloy layer, nickel-iron alloy layer, iron-aluminum alloy layer, iron-silicon-aluminum alloy layer, iron-cobalt alloy layer, soft ferrite layer, amorphous soft magnetic alloy layer, and ultrafine crystal soft magnetic alloy layer.

[0047] It should be pointed out that in the present disclosure, the iron layer may be a pure iron layer. The so-called pure iron refers to pure iron in the usual sense, that is, it is not an iron alloy, and does not mean 100% iron.

[0048] Of course, the magnetic conductive layer 22 may also include other soft magnetic materials.

[0049] In this embodiment, the magnetic conductive layer 22 includes soft magnetic material, which can effectively improve the magnetic permeability of the magnetic conductive layer 22, reduce magnetic loss, increase the interaction force between the rotor 2 and the stator 1, and increase the torque output by the motor.

[0050] Figure 3 is a schematic diagram of a partial structure of a rotor 2 according to an exemplary embodiment, such as Figure 3 As shown, the magnetic conductive layer 22 includes a plurality of solid annular magnetic conductive sheets 22 - 1 , which are sleeved on the peripheral side wall of the rotating shaft 21 and are continuously arranged along the axial direction of the rotating shaft 21 .

[0051] In this embodiment, a plurality of annular magnetic conductive sheets 22-1 are stacked axially along the rotating shaft 21 as the magnetic conductive layer 22, and the length of the magnetic conductive layer 22 can be flexibly controlled as needed, which is convenient for adjustment. Moreover, the solid annular magnetic conductive sheet 22-1 can provide the largest penetration cross section for the magnetic lines of force 232, thereby maximizing the magnetic permeability.

[0052] In some embodiments, the annular magnetic conductive sheet 22 - 1 is a silicon steel sheet, which is a commonly used material in motors, is easy to obtain and has high magnetic permeability.

[0053] Figure 4 is a schematic diagram of a rotor 2 structure according to an exemplary embodiment. Figure 4 As shown, the magnetic conductive layer 22 includes a solid cylindrical magnetic conductive member 22 - 2 with closed peripheral side walls and open ends. The cylindrical magnetic conductive member 22 - 2 is sleeved on the peripheral side walls of the rotating shaft 21 .

[0054] In this embodiment, the magnetic conductive layer 22 is configured as an integrated cylindrical magnetic conductive member 22 - 2 , which can improve the strength of the magnetic conductive layer 22 and make the motor more stable and reliable when working.

[0055] In some embodiments, the cylindrical magnetic conductive member 22-2 is a low-carbon steel plate wound around the side wall of the rotating shaft 21. The cylindrical magnetic conductive member 22-2 is made of low-carbon steel plate, which has a simple process and low raw material cost.

[0056] In some embodiments, multiple layers of low-carbon steel plates may be provided as needed to ensure that the cylindrical magnetic conductive member 22 - 2 has sufficient thickness.

[0057] In some embodiments, the annular magnetic conductive sheet 22 - 1 and the cylindrical magnetic conductive member 22 - 2 are both a configuration of the magnetic conductive layer 22 , and those skilled in the art may also configure the magnetic conductive layer 22 in other forms as needed.

[0058] In some embodiments, Figure 1 As shown, the magnetic layer 23 includes a cylindrical magnetic member sleeved on the outer peripheral side wall of the magnetic conductive layer 22, and the cylindrical magnetic member has a closed peripheral side wall and two ends that are open.

[0059] Figure 5 is a schematic diagram of a rotor 2 structure according to an exemplary embodiment. Figure 5 As shown, the cylindrical magnetic component includes a plurality of arc-shaped magnetic tiles 23-1 extending axially along the magnetic conductive layer 22 and surrounding the magnetic conductive layer 22 in the circumferential direction. The plurality of arc-shaped magnetic tiles 23-1 are spliced ​​together along the circumferential direction of the magnetic conductive layer 22 to form a closed cylindrical magnetic component.

[0060] By using arc-shaped magnetic tiles 23-1 to form a cylindrical magnetic part, the diameter of the cylindrical magnetic part can be changed by increasing or decreasing the number of arc-shaped magnetic tiles 23-1, and the number of magnetic poles of the cylindrical magnetic part can also be changed, thereby adjusting the motor performance and optimizing the motor parameters.

[0061] In some embodiments, the stator 1 includes a stator core 12 and a stator winding 11 coaxial with the rotor 2. The stator core 12 is sleeved on the circumferential side wall of the rotor 2 and is spaced apart from the rotor 2. The stator core 12 is provided with winding grooves along the axial direction, and the stator core 12 includes a plurality of winding grooves arranged circumferentially along the stator core 12. Wires are wound on the winding grooves to form the stator winding 11.

[0062] In some embodiments, the number of magnetic poles of the rotor 2 and the number of stator windings 11 can be combined in various ways, for example: Figure 2 As shown, 2 rotors and 2 magnetic poles correspond to 6 stator windings 11, or as Figure 6 As shown, two rotors with two magnetic poles correspond to three stator windings 11. Of course, the motor of the embodiment of the present disclosure may also adopt other combinations of the number of rotors with two magnetic poles and stator windings 11 without being limited to the drawings, for example, four rotors with two magnetic poles correspond to six stator windings 11, or four rotors with two magnetic poles correspond to three stator windings 11, and those skilled in the art may also use other combinations of the number of rotors with two magnetic poles and stator windings 11 according to actual needs, and the present disclosure does not limit this.

[0063] In some embodiments, the number of magnetic poles of the rotor 2 and the number of stator windings 11 cannot be the same, so as to prevent the rotor 2 from being attracted by the stator 1 and unable to rotate when the rotor 2 rotates to a certain angle.

[0064] In some embodiments, Figures 3 to 5 As shown, the length of the magnetic conductive layer 22 is greater than or equal to the length of the magnetic layer 23 , and the magnetic conductive layer 22 is flush with both ends of the magnetic layer 23 in the axial direction of the rotating shaft 21 , or at least one end protrudes from the magnetic layer 23 .

[0065] The magnetic conductive layer 22 is extended axially on the magnetic layer 23 so that the magnetic conductive layer 22 protrudes from the magnetic layer 23 , so that the magnetic lines of force 232 scattered to both ends of the magnetic layer 23 can also pass through the channel formed by the magnetic conductive layer 22 to form a closed magnetic path, thereby ultimately improving the torque of the motor.

[0066] In some embodiments, the rotating shaft 21 can also be made of soft magnetic materials, for example, one or more of pure iron, low carbon steel, ferrosilicon alloy, nickel-iron alloy, iron-aluminum alloy, iron-silicon-aluminum alloy, iron-cobalt alloy, soft ferrite, amorphous soft magnetic alloy, and ultrafine crystal soft magnetic alloy. The rotating shaft 21 can also be directly used as a magnetic conductive channel to maximize the magnetic permeability.

[0067] In some embodiments, the magnetic conductive layer 22 is in contact with the rotating shaft 21 , and the magnetic conductive layer 22 is in contact with the magnetic layer 23 .

[0068] The bonding between the magnetic conductive layer 22 and the rotating shaft 21, and between the magnetic conductive layer 22 and the magnetic layer 23 can be achieved in a variety of ways. For example, a sticky material is provided between the magnetic conductive layer 22 and the rotating shaft 21, and between the magnetic conductive layer 22 and the magnetic layer 23 to enhance the fixing strength between the magnetic conductive layer 22 and the rotating shaft 21, and between the magnetic conductive layer 22 and the magnetic layer 23, so that the rotating shaft 21, the magnetic conductive layer 22, and the magnetic layer 23 rotate synchronously, avoiding relative rotation, and reducing the torque output by the motor. Alternatively, the pressure between the rotating shaft 21, the magnetic conductive layer 22, and the magnetic layer 23 can be increased to increase the friction between the rotating shaft 21, the magnetic conductive layer 22, and the magnetic layer 23 through pressure, thereby avoiding relative rotation between the rotating shaft 21, the magnetic conductive layer 22, and the magnetic layer 23.

[0069] Figure 7 According to an exemplary embodiment Figure 1 The enlarged picture of A in the middle is as follows: Figure 7 As shown, a first limiting groove 221 and a first limiting edge 211 that cooperate with each other and extend axially along the rotating shaft 21 are arranged between the rotating shaft 21 and the magnetic conductive layer 22, and / or a second limiting groove 231 and a second limiting edge 222 that cooperate with each other and extend axially along the magnetic conductive layer 22 are arranged between the magnetic conductive layer 22 and the magnetic layer 23.

[0070] Among them, the first limiting groove 221 can be set on the peripheral side wall of the rotating shaft 21, and correspondingly, the first limiting edge 211 is set on the inner peripheral side wall of the magnetic conductive layer 22; or, the first limiting groove 221 can be set on the inner peripheral side wall of the magnetic conductive layer 22, and the corresponding first limiting edge 211 is set on the peripheral side wall of the rotating shaft 21.

[0071] The second limiting groove 231 can be set on the outer peripheral side wall of the magnetic conductive layer 22, and the second limiting edge 222 can be set on the inner peripheral side wall of the magnetic layer 23; or, the second limiting edge 222 can be set on the outer peripheral side wall of the magnetic conductive layer 22, and the second limiting groove 231 can be set on the inner peripheral side wall of the magnetic layer 23.

[0072] Figure 7 Only the situation in which the first limiting groove 221 is set on the inner peripheral side wall of the magnetic conductive layer 22, the first limiting edge 211 is set on the peripheral side wall of the rotating shaft 21, the second limiting edge 222 is set on the outer peripheral side wall of the magnetic conductive layer 22, and the second limiting groove 231 is set on the inner peripheral side wall of the magnetic layer 23 is shown, but it is not limited to this.

[0073] Magnetic lines of force are a curve used to describe the distribution and strength of a magnetic field. They are a descriptive tool, not a real line. In the embodiment of the present disclosure, magnetic lines of force 232 are used to describe the distribution of the magnetic field in the magnetic layer 23 and the stator winding 11. Figure 2 , Figure 6 The curve in FIG. 2 is also a schematic magnetic field line 232 used to describe and symbolize the magnetic field distribution for the convenience of understanding by those skilled in the art, and does not represent a structure with a physical shape and volume. Figure 2 , Figure 6 The lines of the center magnetic field lines 232 are for illustration purposes only, and the differences in thickness and length are only caused by drawing the drawings and do not represent different meanings.

[0074] Figure 8 is a partial structural schematic diagram of a hair dryer according to an exemplary embodiment. Figure 8 As shown, the hair dryer includes the motor in the embodiment of the present disclosure.

[0075] The motor in the disclosed embodiment can generate a greater torque, so that the hair dryer can also generate a greater torque, thereby improving the blowing efficiency.

[0076] In some embodiments, the hair dryer includes an impeller 3 for pushing air. The impeller 3 is sleeved on the rotor 2. The blades on the impeller 3 have a larger windward angle.

[0077] The increase in the torque output by the motor makes it possible to increase the windward angle of the fan blades, thereby improving the blowing efficiency without increasing the motor speed.

[0078] In some embodiments, the impeller 3 is sleeved on the rotating shaft 21 , and the magnetic conductive layer 22 and the magnetic layer 23 are both arranged away from the impeller 3 .

[0079] In this embodiment, the impeller 3 is directly arranged on the rotating shaft 21, which can prevent the magnetic layer 22 and the magnetic layer 23 from being subjected to twisting and shearing forces, because the magnetic layer 22 is generally made of low-carbon steel or silicon steel sheets, which has low strength, and the magnetic layer 23 is generally made of permanent magnets, which are hard and brittle and are not suitable as axial transmission structures. The rotating shaft 21 is generally made of high-strength steel and can withstand large twisting and shearing forces. The reliability of the hair dryer transmission structure is improved.

[0080] In some embodiments, the hair dryer includes an air duct shell 4, which is a double-layer cylindrical structure and is coaxially arranged with the rotating shaft 21, wherein the inner layer of the air duct shell 4 is sleeved on the outer peripheral side wall of the stator core 12, the inner layer and the outer layer of the air duct shell 4 are arranged at intervals, and the impeller 3 is arranged between the inner layer and the outer layer of the air duct shell 4. The wind generated when the impeller 3 rotates passes between the inner layer and the outer layer of the air duct shell 4, and the air duct shell 4 provides a channel for the wind generated by the impeller 3. At the same time, the wind passing through the air duct shell 4 can take away the heat generated by the motor when it is working, cool the motor, and prevent the motor from overheating and damage.

[0081] In some embodiments, the hair dryer includes a power supply component that can store electrical energy, and the power supply component is electrically connected to the motor.

[0082] By providing a power supply component that can store electrical energy, the hair dryer does not need to be connected to a power cord when in use, and its use is not restricted by the location of the power cord and the socket, making it more convenient to use.

[0083] In some embodiments, the power supply assembly includes a battery, which may be rechargeable or disposable.

[0084] At the same time, because the motor of the embodiment of the present invention can output a larger torque, the motor speed can be reduced a lot at the same blowing efficiency, thereby reducing power consumption and further reducing the weight of the power supply component, which is more conducive to the promotion of hair dryers that can store electrical energy.

[0085] In some embodiments, the hair dryer includes a pluggable charging harness for charging the power supply assembly. When in use, the charging harness can be unplugged to achieve wireless handheld use.

[0086] In some embodiments, the hair dryer can also directly use a power cord to connect to AC power to power the motor, or have both a power supply component and a power cord. As long as the motor in the embodiment of the present disclosure is used in the hair dryer, it is within the scope of protection of the present disclosure.

[0087] In an embodiment of the present disclosure, the hair dryer can be a wireless hair dryer. Specifically, according to the configuration of the present disclosure, the motor can be miniaturized, the power supply component can also be miniaturized, and then the hair dryer can be miniaturized, and finally the hair dryer can be made portable. For example, for a hair dryer used for charging, the charging time can be reduced and the battery life can be increased. For a hair dryer with a battery, a smaller battery can be used, and then a portable and small hair dryer can be realized. At the same time, the battery life of such a hair dryer can also be increased, thereby improving the user experience.

[0088] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0089] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0090] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0091] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0092] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0093] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0094] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A motor, characterized in that: The invention comprises a stator (1) and a rotor (2), wherein the rotor (2) is arranged in the stator (1), and the rotor (2) comprises: A rotating shaft (21) for outputting motor power; A magnetic conductive layer (22) is sleeved on the side wall of the rotating shaft (21); and The magnetic layer (23) is sleeved on the outer wall of the magnetic conductive layer (22), wherein the magnetic lines of force (232) of the magnetic layer (23) pass through the magnetic conductive layer (22).

2. The motor according to claim 1, characterized in that The magnetic lines of force (232) emitted by the magnetic layer (23) enter the magnetic layer (22) from the peripheral side wall of the magnetic conductive layer (22), pass through the magnetic conductive layer (22) along the radial cross section of the magnetic conductive layer (22), and return to the magnetic layer (23).

3. The motor according to claim 1, characterized in that The magnetic conductive layer (22) is arranged as a multi-layer structure radially arranged along the magnetic layer (23), and the magnetic conductive layer (22) comprises one layer selected from the group consisting of an iron layer, a low-carbon steel layer, a silicon-iron alloy layer, a nickel-iron alloy layer, an iron-aluminum alloy layer, an iron-silicon-aluminum alloy layer, an iron-cobalt alloy layer, a soft magnetic ferrite layer, an amorphous soft magnetic alloy layer, and an ultra-fine crystal soft magnetic alloy layer; Or the magnetic conductive layer (22) is formed by laminating multiple layers of an iron layer, a low carbon steel layer, a silicon iron alloy layer, a nickel iron alloy layer, an iron aluminum alloy layer, an iron silicon aluminum alloy layer, an iron cobalt alloy layer, a soft magnetic ferrite layer, an amorphous soft magnetic alloy layer, and an ultrafine crystal soft magnetic alloy layer.

4. The motor according to claim 3, characterized in that The magnetic conductive layer (22) comprises a plurality of solid annular magnetic conductive sheets (22-1), wherein the plurality of annular magnetic conductive sheets (22-1) are sleeved on the peripheral side wall of the rotating shaft (21), and the plurality of annular magnetic conductive sheets (22-1) are continuously arranged along the axial direction of the rotating shaft (21).

5. The motor according to claim 4, characterized in that The annular magnetic conductive sheet (22-1) is a silicon steel sheet.

6. The motor according to claim 3, characterized in that The magnetic conductive layer (22) comprises a solid cylindrical magnetic conductive part (22-2) with a closed peripheral side wall and openings at both ends, and the cylindrical magnetic conductive part (22-2) is sleeved on the peripheral side wall of the rotating shaft (21).

7. The motor according to claim 6, characterized in that The cylindrical magnetic conductive member (22-2) is a low-carbon steel plate wound around the peripheral side wall of the rotating shaft (21).

8. The motor according to any one of claims 1 to 7, characterized in that: The magnetic layer (23) comprises a cylindrical magnetic part sleeved on the outer peripheral side wall of the magnetic conductive layer (22); the cylindrical magnetic part has a closed peripheral side wall and two ends that are open.

9. The motor according to claim 8, characterized in that The cylindrical magnetic component comprises a plurality of arc-shaped magnetic tiles (23-1) extending axially along the magnetic conductive layer (22) and surrounding the magnetic conductive layer (22) in the circumferential direction of the magnetic conductive layer (22); the plurality of arc-shaped magnetic tiles (23-1) are spliced ​​together in the circumferential direction of the magnetic conductive layer (22) to form a closed cylindrical magnetic component.

10. The motor according to any one of claims 1 to 7, characterized in that: The length of the magnetic conductive layer (22) is greater than or equal to the length of the magnetic layer (23); the magnetic conductive layer (22) is flush with both ends of the magnetic layer (23) in the axial direction of the rotating shaft (21), or at least one end protrudes from the magnetic layer (23).

11. The motor according to any one of claims 1 to 7, characterized in that: The magnetic conductive layer (22) is bonded to the rotating shaft (21), and the magnetic conductive layer (22) is bonded to the magnetic layer (23).

12. The motor according to claim 11, characterized in that A first limiting groove and a first limiting edge that cooperate with each other and extend axially along the rotating shaft (21) are provided between the rotating shaft (21) and the magnetic conductive layer (22), and / or a second limiting groove and a second limiting edge that cooperate with each other and extend axially along the magnetic conductive layer (22) are provided between the magnetic conductive layer (22) and the magnetic layer (23).

13. A hair dryer, characterized in that: The invention comprises a motor as described in any one of claims 1 to 12.

14. The hair dryer according to claim 13, characterized in that A power supply component capable of storing electric energy is included, and the power supply component is electrically connected to the motor.

15. The hair dryer according to claim 14, characterized in that The hair dryer is a wireless hair dryer.

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