Hair dryer
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JEMELLA LTD
- Filing Date
- 2025-01-10
- Publication Date
- 2026-08-04
Smart Images
Figure CN122514318A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to hair dryers. Background Technology
[0002] Hair dryers provide airflow. This airflow can be used to remove moisture from hair and / or to style hair.
[0003] Hair dryers typically consist of a main body with an air inlet, an air outlet, a fan assembly, and a heating element. The fan assembly draws in outside air through the air inlet and blows air out through the air outlet. The heating element is arranged to heat the airflow to provide hot air.
[0004] Hair dryers may include nozzles for controlling airflow from an outlet. The nozzles may be releasably mounted at the outlet of the body. Handheld hair dryers include a handle. The handle is typically located on the underside of the body and extends substantially perpendicular to the longitudinal axis of the body.
[0005] For background information, please refer to: FR1387334, EP1371302, WO94 / 23611, JP2004-113402, JP2006-130181A and WO2012 / 076885. Summary of the Invention
[0006] The present invention aims to provide a new or improved hair dryer.
[0007] Throughout the description and claims of this specification, the words “comprise” and “contain” and variations thereof, such as “comprising”, “comprise”, mean “including but not limited to” and are not intended to exclude other parts, additions, components, integrals or steps.
[0008] Throughout the description and claims, the singular encompasses the plural unless the context requires otherwise. In particular, when using indefinite articles, this specification should be understood to consider both the plural and the singular unless the context requires otherwise. Features, integers, characteristics, or groups described in connection with a particular aspect, embodiment, or example of the invention should be understood to be applicable to any other aspect, embodiment, or example described herein, unless incompatible with it.
[0009] According to one aspect of the invention, a hair dryer is provided, comprising: a body having a center of mass; and a handle having a longitudinal extent extending away from the body; wherein the handle is attached to the body at a point away from the center of mass; and is shaped to allow the body to be held near the center of mass, wherein the longitudinal extent of the handle extends below the center of mass of the body.
[0010] In some embodiments, the handle may be attached to the body of the hair dryer via an offset portion. A portion of the offset portion may be attached to the body at a point offset from the body's center of gravity, while another portion may be attached to the handle. This offset portion separates the handle from the hair dryer's body, thereby defining a notch through which a user's fingers or part of their hand can pass when the user holds the body near its center of gravity with the handle extending longitudinally below it.
[0011] In some embodiments, the body may be generally cylindrical and may include: a fan assembly for generating airflow through the body of the blower; and a heater operable to heat at least a portion of the airflow generated by the fan assembly. In some embodiments, a channel may be disposed near the periphery of the blower body, and the fan assembly may be configured to propel unheated air through the channel. In such embodiments, airflow through a channel near the periphery of the body may reduce the degree to which the heated air causes a temperature rise in the portion of the body located near the body's center of mass.
[0012] In some embodiments, a portion of the hair dryer's body near its center of mass that can be held by a user may be heat-insulated. In such embodiments, heat insulation prevents this insulated portion of the body from being heated to a degree that would make it uncomfortable for the user to hold the body in that position due to the activation of the heater housed within the body.
[0013] According to another aspect of the present invention, a hair dryer is provided, comprising: a main body, the main body accommodating a fan assembly and a heater; wherein the main body is generally cylindrical, and a plurality of air inlets are provided in an annular form at one end of the main body, the surface area of the portion of the main body with the air inlets being larger than the circular cross-sectional area of the portion of the main body with the air inlets.
[0014] In some embodiments, the plurality of air inlets may include a plurality of channels passing through the wall of the body of the hair dryer, wherein the lateral extents of the plurality of channels are parallel to each other. In such embodiments, a filter may be disposed within the body of the hair dryer near the plurality of air inlets, wherein the surface of the filter is oriented relative to the plurality of air inlets such that the surface is perpendicular to the lateral extents of the plurality of channels.
[0015] In some embodiments, a baffle may be arranged near the air inlet in the body of the hair dryer, wherein the surface of the baffle is configured to guide the air entering the body of the hair dryer through the air inlet to flow along the axial direction of the body toward the fan assembly housed within the body.
[0016] In some embodiments, a user interface display may be provided at the end of the body near the annular air intake.
[0017] According to another aspect of the present invention, a hair dryer is provided, comprising: a main body housing a fan assembly including a motor operable to cause an impeller to rotate, wherein the fan assembly is operable to draw in air through an inlet; and a stator blade assembly disposed within the inlet of the fan assembly, the stator blade assembly including blades arranged at an angle relative to the direction in which the fan assembly is operable to draw in air, the angled arrangement of the blades of the stator assembly guiding the air drawn in by the fan assembly to rotate in a direction corresponding to the rotation direction of the impeller of the fan assembly.
[0018] In some embodiments, the blade arrangement may include a plurality of blades extending between an inner support member and an outer support ring, wherein the plurality of blades are equidistant from each other.
[0019] In some embodiments, the blades of the stator blade assembly may be at an angle of approximately 25° relative to the direction in which the fan assembly is operable to draw in air.
[0020] In some embodiments, the hair dryer may include a plurality of Helmholtz resonant cavities arranged around the periphery of an inlet to a fan assembly through which the fan assembly draws in air.
[0021] Another aspect of the present invention provides a hair dryer, comprising: a main body; a fan assembly for generating an airflow through the main body of the hair dryer; a heater operable to heat air passing through the main body; and control electronics for controlling the operation of the hair dryer. In such embodiments, a channel may be provided near the periphery of the main body of the hair dryer, and the fan assembly may be configured to push some air that has not been heated by the heater through the channel. Then, at least some of the control electronics may be arranged such that a portion of the control electronics is close to the airflow passing through the channel, wherein the airflow dissipates heat from that portion of the control electronics.
[0022] Alternatively, instead of arranging the control electronics such that a portion of the control electronics is close to the channel through which the fan assembly pushes unheated air, the hair dryer can be configured such that when the fan assembly is activated, at least some of the air drawn into the intake port of the fan assembly is drawn across the surface of the control electronics. In such embodiments, the control electronics can be housed in a cavity within the hair dryer handle, and an air passage in fluid communication with the cavity housing the control electronics can be provided, wherein the outlet of the air passage is close to the intake port of the fan assembly, such that when the fan assembly is running, air from the air passage is drawn into the intake port of the fan assembly, thereby generating an airflow across the surface of the control electronics housed in the cavity within the hair dryer handle.
[0023] Another aspect of the present invention provides a hair dryer, comprising: a main body having an air inlet and an air outlet; a fan assembly for generating an airflow through the main body of the hair dryer from the air inlet to the air outlet; and a heater operable to heat air passing through the main body; wherein a bulb is disposed at the central portion of the air outlet, the bulb having a first end closer to the fan assembly and a second end closer to the air outlet, wherein the surface of the bulb at the second end of the bulb and the portion of the air outlet concentric with the second end of the bulb are configured to guide air around the bulb inward toward an axis passing through the center of the air outlet.
[0024] In some embodiments, the first end of the sphere may be hemispherical, and the second end of the sphere may be tapered. A channel may be provided near the periphery of the blower body, and the fan assembly may be configured to propel unheated air through the channel and exhaust it from the periphery of the outlet. In such embodiments, a portion of the channel concentric with the second end of the sphere may be configured to guide the air through the channel inward toward an axis passing through the center of the outlet.
[0025] Another aspect of the present invention provides a hair dryer including a magnetic attachment system, the hair dryer comprising: a body having an air outlet at one end; a fan assembly for generating an airflow through the body of the hair dryer; a heater operable to heat the air passing through the body; and a magnet for attaching an accessory to the end of the body of the hair dryer having the air outlet; wherein a channel is provided near the periphery of the body of the hair dryer, and the channel has an outlet located at the periphery of the air outlet of the hair dryer; the fan assembly is configured to push some unheated air through the channel; and the magnet is separated from the airflow passing through the body of the hair dryer and heated by the heater by the channel.
[0026] In some embodiments, the surface of the magnet located at the end of the hair dryer near the air outlet may be inclined such that the portion of the magnet closer to the airflow passing through the body of the hair dryer and heated by the heater is recessed from the end of the hair dryer body relative to the portion of the magnet further away from the airflow passing through the body of the hair dryer and heated by the heater.
[0027] An accessory, such as a nozzle, diffuser, or hair pick, attached to such a hair dryer may include an extension that inserts into a channel near the periphery of the hair dryer body; and a ferromagnetic component disposed near the extension, wherein, when the extension is inserted into the channel near the periphery of the hair dryer body, the ferromagnetic component is attracted to an end of the hair dryer body by a magnet disposed on the hair dryer body. In some embodiments, the surface of the ferromagnetic component may be angled to provide an inclined surface complementary to the inclined surface of the hair dryer, the accessory being designed to attach to the inclined surface of the hair dryer.
[0028] Optionally, the positions of the magnet and the ferromagnetic component can be interchanged. In this case, the accessory will include an extension that inserts into a channel near the periphery of the main air outlet of the hair dryer, to which the accessory is attached; a magnet disposed near the extension; and an inner wall that, when the extension is inserted into the channel, serves to prevent air exiting from the main air outlet of the hair dryer from passing close to the magnet. In some embodiments, the surface of the magnet may be angled to provide an inclined surface complementary to the inclined surface of the hair dryer, the accessory being designed to attach to the inclined surface of the hair dryer.
[0029] With the magnet located on the accessory, the hair dryer may include: a body having an air outlet at one end; a fan assembly for generating airflow through the body of the hair dryer; and a heater operable to heat the air passing through the body. A channel is provided near the periphery of the body of the hair dryer, the channel having an outlet located near the air outlet of the hair dryer, and the channel is configured to receive an extension of the accessory. In such a hair dryer, the fan assembly may be configured to push some unheated air through the channel; and a ferromagnetic component may be provided near the air outlet, this component being separated by the channel from the airflow passing through the body of the hair dryer and heated by the heater.
[0030] In such systems, the surface of the ferromagnetic component can be angled to provide a tilted surface that complements the tilted surface of the accessory, which is designed to attach to the hair dryer.
[0031] The magnet can be a ring magnet or multiple magnets arranged in a ring, and in some embodiments it can be a neodymium magnet.
[0032] Another aspect of the invention provides a diffuser accessory attached to a hair dryer, comprising: an air inlet for receiving air; a panel having a concave surface defining a bowl-shaped portion; a set of forks extending into the bowl-shaped portion; wherein a plurality of holes are provided to allow air to enter the bowl-shaped portion through the panel and the forks, at least some of the holes being provided in a central portion of the panel; and a baffle disposed in the central portion of the inlet, the baffle being operable to deflect air entering the air inlet from the central portion of the panel.
[0033] In some embodiments, the diffuser fitting may include an inner wall operable to divert air from the central portion of the inlet to the surrounding area of the inlet.
[0034] Another aspect of the present invention provides a hair dryer, comprising: a main body; a fan assembly for generating airflow through the main body of the hair dryer; a heater operable to heat air passing through the main body; and control electronics for controlling the operation of the heater and the fan assembly; wherein the main body includes: a reflective layer, a light guide layer, a diffuser, and a mask; and the hair dryer further includes a light source operable to illuminate the light guide layer of the main body in response to the control electronics' selection of operation.
[0035] Another aspect of the present invention provides a hair dryer, comprising: a body having an air inlet; a filter operable to prevent dirt and debris from entering the body of the hair dryer through the air inlet; a fan assembly for generating an airflow through the body of the hair dryer; a heater operable to heat the air passing through the body; and a dust sensor operable to determine an estimated dust level near the filter and generate a signal when the estimated dust level exceeds a predetermined level.
[0036] In some embodiments, the dust sensor may include a light source and a light sensor, wherein the dust sensor is operable to determine an estimated dust level near the filter based on the proportion of light emitted by the light source detected by the light sensor.
[0037] Optionally, the dust sensor can be operated to determine an estimated dust level near the filter based on any of the following: the highest temperature detected near the filter; the heating time of the blower; the airflow through the body; the power required for the fan assembly to generate the airflow; the interval between blower uses; and the cumulative use of the blower.
[0038] In some embodiments, the hair dryer may include a user interface, and the generated signals may be operable to cause the user interface to output a warning or stop the hair dryer from operating until the filter is cleaned when the estimated dust level near the filter exceeds a predetermined level.
[0039] In some embodiments, the heater of the hair dryer may be disabled when the estimated dust level exceeds a predetermined level.
[0040] In some embodiments, the hair dryer may include a cleaner operable to remove dust from a filter and to activate when the estimated dust level exceeds a predetermined level.
[0041] Optionally or additionally, the hair dryer may include a sensor for detecting whether the filter is correctly installed on the hair dryer, and the hair dryer may be arranged to output a warning and / or disable the heater if the filter is not correctly installed on the hair dryer. Attached Figure Description
[0042] The present invention is illustrated by way of example in the following figures, wherein:
[0043] Figure 1 This is a side view of a hair dryer;
[0044] Figure 2 yes Figure 1 A schematic cross-sectional view of a hair dryer;
[0045] Figure 3 yes Figure 2 A schematic diagram of airflow in a cross-sectional view;
[0046] Figure 4 yes Figure 1 An enlarged diagram of the air inlet of a hair dryer;
[0047] Figure 5 This is a front view of the stator blade assembly;
[0048] Figure 6 When the nozzle attachment is attached to the hair dryer Figure 1 A cross-sectional diagram of the airflow from the hairdryer;
[0049] Figure 7 yes Figure 6 A partially enlarged cross-sectional view of the end of the hair dryer's barrel, showing how the nozzle attachment is attached to the hair dryer;
[0050] Figure 8 It can be attached to Figure 1 A cross-sectional view of the diffuser accessory of the hair dryer barrel;
[0051] Figure 9 It is used in Figure 1 A schematic diagram of the optical stack that provides illumination to the outside of the hair dryer's barrel;
[0052] Figure 10 This is a schematic diagram of a dust sensor used to sense dust near a filter; and
[0053] Figure 11 This is a schematic diagram of an alternative dust sensor used to sense dust near a filter. Detailed Implementation
[0054] Now refer to Figures 1 to 11 An exemplary hair dryer according to an embodiment of the present invention is described.
[0055] Overview
[0056] First go to Figure 1 and Figure 2 The figures show a side view and a corresponding schematic cross-sectional view of a hair dryer 1, which typically includes a generally cylindrical body 3 mounted on a handle 5.
[0057] A fan assembly 7 (including a motor 9 and a set of impellers 10), an ionizer 11, and a heater 13 are housed within a cylinder 3. The motor 9 of the fan assembly 7 drives the impellers 10, and when the impellers 10 are activated, air is drawn into the cylinder 3 through the inlet 14. The air travels along the cylinder 3, passing through the ionizer 11, which ionizes the air to neutralize the positive ionic charge in the hair, thus allowing the hair to dry more quickly. The air then passes through the heater 13, which heats the air, after which the air is discharged from the cylinder 3 through the main outlet 15. By positioning the ionizer 11 upstream of the heater 13, the position of the ionizer 11 limits the airflow of unheated or less heated air passing near the heater 13 to the center of the cylinder 3.
[0058] A set of control buttons 17 is provided on the handle 5, allowing the user to turn the hair dryer 1 on and off and control various settings of the hair dryer 1, such as the temperature setting of the hair dryer 1 and the speed at which the motor 9 of the fan assembly 7 drives the impeller 10. In this embodiment, the current status of the hair dryer 1 is communicated to the user through a user interface display 19 mounted on the end of the barrel 3 away from the main air outlet 15, a ring power indicator 21, and a group of light strips 23 provided on the main body of the barrel 3. The control buttons 17 are mounted in the front control bracket assembly 25 and the rear control bracket assembly 27 on opposite sides of the handle 5 and are connected to the control electronics 29 housed in the handle 5. The control electronics 29 is configured to modify the control settings of the hair dryer 1 based on the movement or pressing of the buttons 17. Then, the control electronics 29 sends signals to other components of the hair dryer 1 according to the function selected by pressing or moving the control buttons 17.
[0059] The motor 9 used to drive the impeller 10 inside the cylinder 3 typically accounts for a large portion of the weight of the hair dryer 1. Typically, such as Figure 2 As shown in the cross-sectional view, the motor 9 of the set of impellers 10 used to drive the fan assembly is offset from the center of the cylinder 3 at the following end: at this end, air enters the cylinder 3 of the blower 1. This means that in the case of... Figure 1 and Figure 2 In the hair dryer 1 shown, the center of gravity of the hair dryer 1 is offset from the center of the barrel 3 towards the end of the barrel 3 that houses the fan assembly 7.
[0060] Ergonomic design
[0061] In use, users or hairstylists typically guide the air expelled from the main air outlet 15 into the barrel 3 by holding the handle 5 and simultaneously changing the direction of the barrel 3. To facilitate this operation, when the hair dryer 1 is held so that the barrel 3 is extended horizontally (e.g.,...),... Figure 1 and Figure 2As shown), the handle 5 extends below the barrel 3 directly below the center of gravity of the hair dryer 1.
[0062] In this embodiment, as Figure 1 As shown, the handle 5 is connected to the barrel 3 via a connecting segment 31. The connecting segment 31 connects to the barrel 3 of the hair dryer 1 at a position offset from the lateral range of the handle 5, creating a notch 32 between the handle 5 and the barrel 3. In this embodiment, the size of the notch 32 allows the user to hold the hair dryer 1 through the barrel 3 with their fingers or part of their hand via the notch 32 near the connecting segment 31. This provides users or stylists with an alternative way of holding the hair dryer 1, namely, holding the barrel 3 of the hair dryer 1 near its center of gravity. This increases the flexibility of possible uses of the hair dryer 1.
[0063] air intake
[0064] Now go to Figure 3 , Figure 3 yes Figure 1 The airflow diagram in the cross-sectional view of the hair dryer 1 shows that, in this embodiment, air is drawn into the barrel 3 of the hair dryer 1 through a series of air inlets 14 at the end of the barrel 3 away from the main air outlet 15.
[0065] Unlike conventional hair dryers where the air inlet is typically located at the end of the cylinder 3 directly opposite the main air outlet 15, in this embodiment, the air inlet 14 is configured as a ring-shaped air inlet on the wall of the cylinder 3. This arrangement allows air to enter the interior of the cylinder 3 through the side wall at the end of the cylinder 3 away from the main air outlet 15.
[0066] This arrangement offers several advantages. In conventional hair dryers, the air inlet is located only at the end of the hair dryer body 3 furthest from the main air outlet 15, thus limiting the total surface area of the air inlet arrangement to the radius of the body 3. In contrast, according to this embodiment, the air inlet 14 is provided as an inlet on the side wall of the hair dryer body 3, thereby increasing the total surface area of the air inlet. The total surface area of this air inlet arrangement is 2πrl, where r is the radius of the hair dryer body 3 and l is the length of the annular extension area of the air inlet (see...). Figure 1 and Figure 2 For a hair dryer barrel 3 with a radius of approximately 2.25 cm, this means that an air inlet extending 1.8 cm in the side wall of the hair dryer barrel 3 can provide 60% more air intake surface area compared to a circular air inlet arrangement at the end of the barrel 3. The larger air intake surface area reduces the aerodynamic resistance of air entering the hair dryer barrel 3, allowing the fan assembly 7 to generate a greater airflow rate at a given power input, thereby achieving a higher drying rate.
[0067] To prevent dirt and debris (such as hair and dust) from entering the interior of the barrel 3 of the hair dryer 1, an external mesh cover 35 can be installed on the outside of the barrel 3 of the hair dryer 1 (see...). Figure 1 The outer cover 35 covers the portion of the cylinder 3 where the air inlet 14 is located. Additionally, another filter 37 can be installed inside the cylinder 3 near the air inlet 14. Typically, the outer cover 35 is a coarse mesh and is removable for easy cleaning. The filter 37 is a finer mesh and further prevents dust and hair from entering the fan assembly 7. Typically, the filter 37 is a removable mesh and can be accessed for cleaning after the outer cover 35 is removed.
[0068] By following Figure 4 The arrangement of the air inlet 14 and filter 37 shown can further improve the airflow efficiency entering the barrel 3 of the blower 1. Figure 4 yes Figure 1 An enlarged schematic diagram of the end of the hair dryer 1 with the air inlet 14.
[0069] More specifically, the air inlet 14 can be designed to be defined by a series of walls 38 and pass through the wall of the barrel 3 of the blower 1. The filter 37 can then be arranged perpendicular to the channel 39 defined by the walls 38. In this way, air entering the interior of the barrel 3 of the blower 1 impacts the surface of the filter 37 perpendicularly. This minimizes the surface area of the filter 37 that prevents air from leaving and entering the interior of the barrel 3. This reduces or essentially eliminates the air shear as air passes through the filter 37.
[0070] Then, a bell-shaped baffle 41 can be installed inside the cylinder 3. The baffle 41 changes the direction of the air entering the cylinder 3 through the air inlet 33 on the wall of the cylinder 3, so as to guide the air toward the air intake 42 of the fan assembly 7 housed in the cylinder 3. Then the fan assembly 7 pushes the air to continue through the longitudinal range of the cylinder 3.
[0071] The arrangement of an air inlet 14 in the form of an air inlet ring on the side wall of the barrel 3 of the hair dryer 1 also allows the user interface display 19 to be mounted on the end of the barrel 3 away from the main air outlet 15. In embodiments where such a user interface 19 is provided at the end of the barrel 3, this may be advantageous because, during use, this part of the hair dryer 1 is usually visible to the stylist performing hair styling, and therefore the information displayed on the user interface display 19 is visible to the stylist when using the hair dryer 1.
[0072] Stator blade assembly
[0073] When air is drawn toward the fan assembly, in this embodiment, the air passes through a set of stator blades 43, one example of which is... Figure 5 As shown in the image.
[0074] Shearing between air layers generates airborne noise. The higher the shear rate, the greater the shear stress, and consequently, the greater the pressure. This directly leads to higher sound pressure levels. Motor 9 rotates the impeller 10 of fan assembly 7 in a specific direction, thereby increasing the angular momentum of the air. This creates shearing between air layers, generating noise. The increased noise level is irritating to human hearing, making it desirable for hair dryers to be as quiet as possible.
[0075] If the shear gradient can be reduced, the noise generated by the impeller 10 can be reduced. In this embodiment, this is achieved by the stator blade assembly 43, which is located within the intake 42 of the fan assembly 7, to introduce micro-rotation into the airflow before it reaches the impeller 10 of the fan assembly 7. This reduces the shear rate, thereby reducing the overall sound pressure level.
[0076] In this embodiment, the stator blade assembly 43 includes a set of six stator blades 47 extending outward from an inner annular support ring 49. The stator blades 47 are equidistantly spaced around the periphery of the support ring 49 and extend from the support ring 49 to an outer ring 51, which is fitted into the intake port 42 of the fan assembly 7. In this embodiment, each stator blade 47 has a thickness of 1.2 mm and is inclined at an angle of 25° relative to the channel defined by the intake port 42. The angled arrangement of the surfaces of the stator blades 47 provides a passive way to increase the angular momentum of the air before it enters the fan assembly 7, thereby reducing the rate of change of angular momentum transmitted to the air by the impeller 10 of the fan assembly 7. This has been found to reduce the air shear rate and decrease the noise generated by the blower 1. Therefore, for example, in a tested device, by providing such... Figure 5 The noise level of the stator blade assembly shown was reduced from 84.78 dBA to 82.95 dBA.
[0077] Of course, it should be understood that other different arrangements of the stator blades 47 may also be used in other embodiments. Thus, for example, the number of stator blades may be increased or decreased, the angle of the stator blades 47 relative to the channel defined by the intake port 42 may be varied, and the manner in which the stator blades 47 are held in place within the intake port 42 may be varied. However, it should be understood that any suitable arrangement of fixing the stator blades 47 may be used such that a slight angular rotation of the air drawn into the intake port of the fan assembly 7 is induced before the air reaches the impeller 10.
[0078] Helmholtz resonator
[0079] Due to the rotation of the impeller 10 and motor 9 in the fan assembly, timbre noise is generated at the blade passage frequency. The lift and drag generated by the impeller are distributed along the driving pressure of each blade, producing pressure waves in the form of sound. The ball bearings of motor 9 and the number of rotor-stator pole pairs also generate noise due to the rotation of the rotor shaft of motor 9. The blade passage frequency that generates noise can be calculated as fBP = NΩ, where N is the number of blades / bearings / pole pairs, and Ω is the rotational speed in rad / s.
[0080] To further reduce the noise generated by the fan assembly 7, in this embodiment, a set of Helmholtz resonant cavities arranged in a ring are provided around the air intake 42 of the fan assembly 7, near the stator blade assembly 43. The cross-section of one of the Helmholtz resonant cavities is shown below. Figure 4 As shown. The Helmholtz resonant cavity includes a set of walls 53 defining a cavity 55, and an inlet port 57 allows air from the intake port 42 of the fan assembly 7 of the blower 1 to enter the cavity 55. The arrangement of the Helmholtz resonant cavity can be formed as a single injection-molded part and molded into a suitable shape.
[0081] In different embodiments, the size and number of Helmholtz resonators can vary. In some embodiments, a set of Helmholtz resonators may form part of the housing of the fan assembly 7 that houses the fan motor 9 and the impeller 10. In other embodiments, a set of Helmholtz resonators may be a component separate from the housing of the fan assembly 7.
[0082] When air is drawn into the intake port 42 of the fan assembly 7 of the blower 1, the air in the inlet port 57 of the Helmholtz resonant cavity 53 oscillates. By selecting a specific size for the Helmholtz cavity design, the resonant frequency of the Helmholtz resonant cavity can be selected to cancel out the noise generated by the fan assembly 7.
[0083] More specifically, the resonant frequency of a Helmholtz resonator is determined by the following formula:
[0084]
[0085] Where c is the velocity of sound in the medium (depending on density and temperature), A is the cross-sectional area of the inlet aperture 57, V is the volume of the cavity 55, and L is the length of the inlet aperture 57. The larger the size of the resonator, the stronger the effect, and the greater the sound attenuation.
[0086] In one embodiment, eight Helmholtz resonant cavities can be provided, and the width of each cavity in the axial direction of the blower barrel 3 can be 14 mm. In another embodiment, six resonant cavities can be provided, and the width of each cavity in the axial direction of the blower barrel 3 is 4.5 mm. It has been found that by providing these cavities and appropriately selecting the cavity size and the inlet orifice size, the noise level at the peak frequency can be reduced by up to 12 dB.
[0087] airflow
[0088] Back Figure 3 , Figure 3 yes Figure 1 A schematic diagram of the airflow in hair dryer 1, see also Figure 6 and Figure 7 When air is drawn into the interior of the blower 1's barrel 3 by the impeller 10 of the fan assembly 7 and travels along the interior of the barrel 3, in this embodiment, a portion of the air is diverted into a channel 59 located near the outer surface of the barrel 3, and separated from the interior of the barrel 3, where the heater 13 and ionizer 11 are located, by the inner wall 61. This causes an air ring to be driven along the barrel 3 as it passes through the channel 59. Since this portion of air is diverted from other airflows inside the barrel 3 before passing through the heater 13 and is isolated from other airflows by the inner wall 61, this air essentially remains at the temperature of the air initially drawn in through the air inlet 14. By providing an annular air of ambient temperature along the channel 59, the outer surface of the barrel 3 is isolated from the hotter air generated by the heater 13 due to the air in the center of the barrel 3. This reduces the degree of temperature rise on the outer surface of the barrel 3, making it more comfortable to hold the blower 1 through the barrel 3.
[0089] In some embodiments, the air diverted into the channel 59 can be used to cool electronic components disposed within the barrel 3 of the blower 1. More specifically, some electronic components (e.g., control electronics of the blower 1) can be positioned such that portions of the electronic components extend into the airflow diverted into the channel 59.
[0090] In many embodiments, the cavity 65 defined by the handle 5, which is provided with the control electronics 29, is not designed to be airtight. In such embodiments, an vent 63 may be provided on the handle 5 (see...). Figure 2 This arrangement allows air to exit the cavity 65, and then the air is guided from inside the handle cavity 65 through the air passage 67 to a position near the intake port 42 of the fan assembly 7. With this arrangement, air is drawn out of the handle cavity 65 as the impeller 10 of the fan assembly 7 draws air in through the air passage 67. This airflow is as follows: Figure 3As shown. This draws air through the control electronics 29 housed within the handle 5, generating an airflow to dissipate the heat generated by the control electronics 29. In some such embodiments, a dedicated air inlet may be provided to allow air into the cavity 65, positioned such that the air entering the cavity 65 is drawn through the control electronics 29. These dedicated air inlets may be located in the handle 5 of the hair dryer 1.
[0091] Alternatively, in other embodiments, a separate air supply element (e.g., a duct or suction tube) can be provided to guide air from near the air inlet 14 in the barrel 3 of the hair dryer 1 to a location in the cavity 65 within the handle 5, thereby providing air circulation over the surface of the control electronics 29. In such embodiments, the air supply element can extend from near the air inlet to a point within the cavity 65 away from the barrel 3 of the hair dryer 1. One advantage of this arrangement is that the cavity 65 can be airtight, and there is no need to provide an additional air inlet on the handle 5. In such hair dryers, the construction is simplified because there is no need to repeatedly install the mesh cover 35 and filter 37 to prevent dirt, debris, and hair from entering the portion of the hair dryer 1 containing the electronic components, considering the entry of air through the air inlet provided on the handle 5 of the hair dryer 1.
[0092] air outlet
[0093] Now refer to Figure 3 and Figure 6 Describe the air discharge from the hair dryer 1 when it is equipped with a nozzle attachment and when it is not equipped with such a nozzle attachment.
[0094] In the absence of an attachment (e.g.) Figure 3 As shown), the air that does not turn into the channel 59 near the outside of the cylinder 3 passes through the inside of the cylinder 3 in the cavity 69 defined by the inner wall 61 of the channel 59, which is equipped with the heater 13 and the ionizer 11, and the heated ionized air is discharged from the cylinder 3 through the main outlet 15.
[0095] In this embodiment, a spherical object 71 is provided at the center of the main air outlet 15. By providing this spherical object 71, the cross-sectional area of the main air outlet 15 that allows air to be discharged from the blower 1 is reduced. This increases the air pressure in the cavity 69 of the cylinder 3 near the heater 13, thereby improving the heat transfer from the heating coil of the heater 13 compared to a blower 1 without this spherical object 71.
[0096] As the blower 1 is discharged, heated air is compressed around the spherical object 71. For example... Figure 6As shown more clearly in this embodiment, the sphere 71 is designed to present a curved, generally hemispherical surface 73 near the cavity 69 of the heater 13 and a tapering end 75 near the main air outlet 15. The inner wall 61 of the channel 59 near the outer surface of the cylinder 3 is angled, such that the inner wall 61 and the tapering end 75 of the sphere 71 guide the air discharged from the interior 69 of the cylinder 3 of the blower 1 inward toward the airflow center away from the main air outlet 15. This helps the air discharged from the main air outlet 15 of the blower 1 to form a jet with a more uniform temperature distribution. As in this embodiment, unheated, cooler air is guided along the channel 59 provided near the side wall 61 of the cylinder 3, such that the heated air discharged from the blower 1 is contained within a cooler air ring, thereby reducing the degree of diffusion and dissipation of the jet after leaving the blower 1. In this case, the distance of the jet that maintains a substantially uniform temperature distribution from the main air outlet 15 can be further increased. Providing more uniformly sized air is desirable because a larger volume of uniformly sized air is more conducive to drying hair compared to a jet of air with greater temperature variations.
[0097] Because the spherical object 71 obstructs a portion of the main air outlet 15, air is expelled from the unobstructed portion of the main air outlet 15 at a higher velocity than when the spherical object is not present. This causes the output jet to project heat energy over a greater distance than when the spherical object 71 is not present. This increase in air velocity allows the hot air to penetrate deeper into the moisture boundary of wet hair and remove moisture at a faster rate than in other cases.
[0098] Nozzle accessories
[0099] Figure 6 When the exemplary nozzle accessory 77 is attached to the hair dryer 1 Figure 1 A cross-sectional schematic diagram of the airflow exiting the hair dryer 1. In this example, the exemplary nozzle attachment 77 includes a nozzle attachment that shapes the air leaving the hair dryer 1 into a narrow "blade" shape for heating.
[0100] To reduce the degree of heating of the external air surrounding the nozzle attachment 77, the attachment 77 may include a channel 79 for receiving air passing through the channel 59 surrounding the main air outlet 15 of the blower 1. The inner wall 81 of the nozzle attachment 77 then prevents this air from mixing with the air already heated by the heater 13 exiting from the main air outlet 15. This helps reduce the degree of heating of the outer surface of the nozzle attachment 77 by the air leaving the blower 1, and lowers the external temperature of the nozzle attachment 77.
[0101] Magnetic attachment system
[0102] Now go to Figure 7 , Figure 7This is an enlarged cross-sectional view of a portion of the channel 59 near the periphery of the main air outlet 15 at the end of the barrel 3 of the hair dryer 1. In some embodiments, a metal ferromagnetic ring 83 may be provided near the outlet of the channel 59. Then, an annular magnet 85 may be provided on the attachment 77 near the channel 79 in the attachment 77. The channel 79 is used to receive airflow from the channel 59 near the periphery of the barrel 3 of the hair dryer 1. The annular magnet 85 has similar dimensions to the metal ferromagnetic ring 83. In some embodiments, the annular magnet 85 and the ferromagnetic ring 83 may have complementary bevels, wherein the magnet 85 is received in a recess having an inclined surface 87. A cylindrical extension 89 may be provided, extending beyond the end of the inclined surface 87.
[0103] In use, the cylindrical extension 89 is then inserted into the channel 59 around the barrel 3 of the blower 1. Subsequently, the inclined surface 87 and the complementary surface 91 provided on the blower 1 near the channel 59 cause the nozzle attachment 77 to automatically center when the cylindrical extension 89 is inserted into the channel 59. Then, the metal ferromagnetic ring 83 is attracted by the annular magnet 85, thereby securing the nozzle attachment 77 to the blower 1. Because the cylindrical extension 89 is accommodated within the channel 59, the attachment remains in place and is prevented from moving out unless the user pulls the end of the nozzle attachment 77 to separate the annular magnet 85 from the ferromagnetic metal ring 83.
[0104] Magnetic attachment systems solve several problems associated with attaching nozzles to hair dryers in existing systems. Thermal expansion makes it difficult to design small, discrete clamps to hold the attachment to the hair dryer in both cold and hot conditions. Mechanical attachments may be difficult to attach when cold and provide insufficient holding force when hot due to thermal expansion and contraction. Furthermore, mechanical attachment systems wear down over time, potentially further reducing the holding force over time. In contrast, magnetic attachment systems, such as those described above, allow the nozzle 77 to attach to the hair dryer 1 and remain in place without any mechanical means, thus avoiding these problems.
[0105] Preferably, when using a magnetic attachment system, as described above, the annular magnet 85 is mounted in the nozzle attachment 77, and the ferromagnetic ring 83 is mounted on the hair dryer 1, located at the end of the hair dryer barrel 3. This allows different attachments to include magnets 85 with holding forces suitable for the nature of the attachment and its intended purpose and use. Furthermore, this arrangement reduces the likelihood of damage to the magnet 85, because the attachment is generally lighter than the hair dryer, and therefore receives less energy from the impact when dropped compared to when the hair dryer is dropped.
[0106] It should be understood that in other embodiments, the positions of the annular magnet 85 and the ferromagnetic ring 83 may be interchanged, but in such embodiments, the same magnet 85 must be used to attach different accessories, and due to the weight difference, the magnet 85 mounted on the hair dryer 1 is more likely to be damaged if the hair dryer 1 is dropped.
[0107] The preferred material for the toroidal magnet 85 is neodymium. Neodymium is a material with high magnetic flux density, which provides a good holding force level while keeping the size of the toroidal magnet 85 small.
[0108] The magnetic flux of a magnet decreases as the operating temperature increases. For example, if a neodymium magnet with a reversible temperature coefficient of -0.11%Br / ℃ is heated from 20℃ to 120℃ by hot air from the blower 1, it will lose 11% of its magnetic flux. By providing a magnet 85 near the airflow channel formed by the channel 59 around the barrel 3 of the blower 1 and the channel 79 provided in the nozzle 77, the magnet 85 is prevented from being directly exposed to the heated air heated by the heater 13 inside the blower 1 (in... Figure 7 (Indicated by dashed arrows). Preferably, the annular magnet 85 is mounted on the side of the channel 79 opposite to the inner wall 81 of the nozzle 77. Thus, during use, the magnet 85 is close to the unheated airflow passing through channels 59 and 79 (in... Figure 7 (Indicated by solid arrows in the image), instead of heating the air through the center of the blower 1, the heating degree of the magnet 85 is reduced. Thus, during use, the strength of the magnet does not decrease significantly due to heating, and irreversible loss of magnetic strength is avoided. Therefore, positioning the annular magnet 85 close to the unheated airflow not only increases the duration of the magnetic connection but also allows for the use of smaller magnets. It is generally understood that the annular magnet 85 may comprise a single magnet or multiple magnets arranged in a ring. Similarly, the ferromagnetic ring 83 may comprise one or more components. The annular magnet 85 and the ferromagnetic ring 83 may also be shaped to control the orientation of the accessory on the blower 1. For example, the annular magnet 85 and the ferromagnetic ring may include opposing protrusions and recesses, such that the ferromagnetic ring can only be positioned in certain orientations relative to the annular magnet. Optionally, the orientation portions may be arranged on opposite sides of the blower 1 and the accessory.
[0109] Other attachments
[0110] although Figure 6 The nozzle attachment 77 includes a nozzle attachment 77 for shaping the air output into a concentrated air blade, but it should be understood that the blower 1 and magnetic attachment system described above can also be used with other types of nozzle attachments.
[0111] Forked Comb
[0112] Therefore, for example, the accessory could be in the form of a forked comb, including a comb that can be used to separate and detangle hair during styling. Figure 6Similar to the accessory shown, this comb can also include channels 79 for guiding unheated air near the exterior of the comb to keep the comb surface cool while allowing heated air to pass through the center of the comb to dry the hair. This reduces the likelihood of the comb teeth breaking or warping during use and reduces the need to manufacture the accessory using heat-resistant materials. One or more outlet vents can be provided in this accessory to allow cool air to exit the accessory.
[0113] diffuser
[0114] Figure 8 It can be attached to Figure 1 A cross-sectional view of the diffuser 93 of the barrel 3 of the blower 1. Similar to the nozzle accessory 77. Figure 8 The diffuser 93 shown includes an annular magnet 85 and a cylindrical extension 89 for insertion into a channel 59 surrounding the barrel 3 of the hair dryer 1. The diffuser 93 includes a generally hemispherical panel 95 containing a set of forked teeth 97. Air enters a bowl-shaped portion defined by the generally hemispherical panel 95 through the array of holes on the panel 95 and the open portions of the forked teeth 97. This bowl-shaped portion acts as a pressure reducer by increasing the outlet area relative to the inlet size. The hole pattern helps to create a substantially uniform airflow, while the forked teeth 97 are used to deliver hot air deeper into the hair.
[0115] Similar to the previously described nozzle attachment 77, a channel 99 is provided near the outer surface of the cylindrical extension 89 and the hemispherical panel 95. When attached to the blower 1, this channel 99 is in fluid communication with a channel 59 around the barrel 3 of the blower 1. When attached to the blower 1, air flows through the diffuser 93 as shown by the arrows in the figure, where solid arrows represent unheated air entering the diffuser 93 through the channel 59 around the barrel 3 of the blower 1, and dashed arrows represent heated air that has been heated by the heater 13.
[0116] In this embodiment, a baffle 101 is provided at the center of the tube defined by the cylindrical extension 89, thereby achieving a uniform flow distribution at the diffuser outlet. The baffle 101 blocks a portion of the tube defined by the cylindrical extension 89 and prevents air discharged from the blower 1 from passing directly along the center of the cylindrical extension 89. Providing a baffle 101 separate from the hemispherical panel 95 means that an inlet hole can be provided on the entire concave surface of the panel 95 without the heated air jet generated by the blower 1 directly entering the bowl-shaped portion defined by the panel 95 through the hole provided at the center of the panel 95 without being deflected by the baffle 101.
[0117] In conventional diffusers, the central portion of panel 95 does not have an air vent. Without the baffle 101, if an air vent were provided in this portion of panel 95, most of the heated air exiting from the barrel 3 of the blower 1 would enter the central portion of the recess defined by the diffuser. In contrast, according to this embodiment, the air jet leaving the blower 1 is deflected by the baffle 101 to distribute the airflow across the entire surface area of panel 95. However, even after being deflected by panel 95, the heated air can still enter the bowl-shaped portion of panel 95 through the air vent in the central portion. This makes the airflow entering the bowl-shaped portion more uniform, preventing any portion of the heated airflow from entering the bowl-shaped portion at a significantly different temperature.
[0118] cylindrical lighting
[0119] As described above, the group of light strips 23 can be mounted on the main body of the barrel 3 of the hair dryer 1. These light strips 23 can be illuminated to indicate to the user that certain functions of the hair dryer 1 have been activated. Thus, for example, the light strips 23 can be illuminated to indicate that the activation system guides unheated air along the channel 59 around the barrel 3 of the hair dryer 1, indicating that the barrel 3 is being kept at a temperature sufficiently cool to be safely held (e.g., by changing from white to blue). Alternatively, in other embodiments, the light strips 23 can be illuminated to indicate the drive speed of the fan motor 9.
[0120] Figure 9 It is used in Figure 1 A schematic diagram of the optical stacking of the outer side of the barrel 3 of the hair dryer 1 and the light strip 23.
[0121] like Figure 9 As shown, in order to accommodate the light strips 23, in this embodiment, the barrel 3 of the hair dryer 1 is formed from a series of cylindrical layers, including a reflective layer 103, a light guide layer 105, a diffuser 107, a mask 109, and a housing working layer 111. LEDs 113 are provided, arranged to illuminate the light guide layer 105. The reflective layer 103 is an inner shell used to reflect light back to the light guide layer 105, while also providing structural components for the barrel 3. The diffuser 107 includes a translucent shell for scattering light from the light guide layer 105 and for shielding the microstructure of the LEDs 113. The mask 109 is a dark layer used to shield a portion of the diffuser 107, so that the light from the LEDs 113 appears as a series of light strips 23. The housing working layer 111 is a transparent protective outer layer used to protect other components of the lighting system.
[0122] In use, when activated, the light from LED113 (in) Figure 9 (Indicated by arrows) The light enters the light guide layer 105 and is reflected by the reflective layer 103 to enter the diffuser 107. Then, the light leaves through the gap in the mask 109 and reaches the surface of the cylinder 3 outward via the outer shell working layer 111.
[0123] Dust level estimation and filter cleaning tips
[0124] As described above, in some embodiments, a filter 37 is provided to prevent dust and hair from entering the fan assembly 7. Typically, users are unaware of when the hair dryer filter 37 needs cleaning. This leads to suboptimal and potentially hazardous drying conditions. To address this issue, the hair dryer 1 may be equipped with a dust sensor to identify when excessive dust has accumulated on the filter 37 and cleaning is required. The user can then be prompted via the user interface display 19 to clean the filter 37.
[0125] Suitable dust sensors can take many forms. In one embodiment, such as Figure 10 As shown, the dust sensor can take the form of a light source 122 (such as an infrared, optical, or ultraviolet LED), a light sensor 124, and a processor 126. The light source 122 can be arranged to direct light 128 toward the vicinity of the filter 37, and the light sensor 124 can be arranged to receive light 130 reflected by dust particles 132 near the filter 37. The processor 126 can then determine the dust level near the filter 37 based on the proportion of light reflected by the dust particles 132 near the filter 37. When the processor 126 determines that a certain condition is met (e.g., the proportion of dust in the air reaches a critical value), the processor 126 then causes the user interface display 19 to notify the user that the filter 37 needs to be cleaned. In some embodiments, if the processor 126 determines that a dangerous dust level exists, the processor 126 can prevent the heater 13 from starting until the dust sensor determines that the filter 37 has been cleaned and the dust level is low.
[0126] Figure 11 An alternative arrangement of the dust sensor is shown. In this embodiment, instead of arranging it to detect light 130 reflected by dust particles 132 near filter 37, the light source 122 and the light sensor 124 are arranged such that light 128 from the light source 122 is directed directly to the light sensor 124. In such an embodiment, the processor 126 of the dust sensor is then arranged to determine the dust level near filter 37 based on the proportion of light 128 emitted by the light source 122 that is blocked by dust particles 128 near filter 37 and cannot be directly transmitted from the light source 122 to the light sensor 124.
[0127] Alternatively, instead of providing a dust sensor including a light source 122 and a light sensor 124, the dust sensor can be arranged to indirectly infer the dust accumulation level near the filter 37 by measuring other parameters. Therefore, for example, the dust sensor may include a temperature monitor for monitoring the temperature of the filter 37. As the dust level near the filter 37 increases, the maximum temperature at which the filter 37 is heated during use will also increase. This increase is approximately linear with the increase in dust accumulation. Therefore, when using the hair dryer 1, the maximum temperature of the filter 37 can be used to infer the dust level near the filter 37.
[0128] In other embodiments, instead of inferring the dust accumulation level by measuring the temperature of the filter 37, other parameters, such as the power on the motor 9 of the fan assembly 7, the heating time, the maximum fan temperature, or the airflow, can be used to infer the accumulated dust level.
[0129] Alternatively, the inferred level of dust accumulation can be determined based on the usage of the hair dryer 1 itself. Thus, for example, in some embodiments, the dust sensor can be arranged to infer a certain level of dust accumulation based on the duration the hair dryer 1 is off or idle, or based on the cumulative amount of time the hair dryer 1 is active.
[0130] Optionally, the dust sensor can be arranged to combine multiple methods to determine or infer or estimate the level of accumulated dust. Thus, for example, in some embodiments, the dust accumulation level can be estimated or determined based on any one or all of direct, indirect, and inferred measurements, and this estimated dust accumulation level can then be used to trigger instructions to display cleaning filter 37 and / or disable the start of heater 13 based on the estimated dust level.
[0131] Although the dust sensor has been described above as measuring or estimating the dust level near filter 37, it should be understood that the described technique can also be used to estimate or measure the dust level in other parts of the blower 1.
[0132] Similarly, although the dust sensor described above is presented as displaying a warning or instruction on the user interface display 19, it should be understood that the generated warning or instruction may also be conveyed to the user by other means (e.g., auditory or tactile) or other methods (e.g., by activating a warning light or sending a message to an external device such as a mobile phone). It should also be understood that if the hair dryer 1 is equipped with a device for automatically cleaning the filter 37, the cleaning device may be activated instead of triggering a warning whenever the dust level is determined to reach or exceed a predetermined level.
[0133] Furthermore, it is understood that a dust sensor can be used to determine whether the filter 37 has been returned to the blower 1, and if so, whether the filter 37 is in the correct position. Alternatively, a separate sensor can be used to determine the presence and / or positioning of the filter. If the filter is absent or not correctly positioned, the processor 126 can be configured to notify the user in a manner similar to that described above, and can also prevent the heater 13 from activating until the filter 37 is in the correct position.
Claims
1. A hair dryer, comprising: The main body, which has a center of mass; as well as A handle having a longitudinal extent extending away from the body; in, The handle is attached to the body at a point offset from the body's center of mass; and is shaped to allow the body to be held near the body's center of mass, wherein the longitudinal extent of the handle extends below the body's center of mass.
2. The hair dryer according to claim 1, wherein, The handle is attached to the body of the hair dryer via an offset portion, a portion of which is attached to the body at a point offset from the center of mass of the body, and another portion of which is attached to the handle. The offset portion separates the handle from the body of the hair dryer, thereby defining a notch through which a user's fingers or part of their hand can pass when the user holds the body near the center of mass of the body with the handle extending below the center of mass of the body.
3. The hair dryer according to claim 1 or 2, wherein, The main body is roughly cylindrical in shape.
4. The hair dryer according to any one of the preceding claims, wherein, The main body of the hair dryer includes a fan assembly for generating airflow through the main body of the hair dryer; and a heater operable to heat at least a portion of the airflow generated by the fan assembly.
5. The hair dryer according to claim 4, wherein, A channel is provided around the periphery of the main body of the hair dryer, and the fan assembly is configured to push air that has not been heated by the heater through the channel.
6. The hair dryer according to any one of the preceding claims, wherein, The portion of the hair dryer body near its center of gravity, which can be held by the user, is heat-insulated.
7. A hair dryer, comprising: The main body, which houses the fan assembly and the heater; The main body is generally cylindrical, and multiple air inlets are arranged in a ring at one end of the main body. The surface area of the part of the main body with the air inlets is larger than the circular cross-sectional area of the part of the main body with the air inlets.
8. The hair dryer according to claim 7, wherein, The plurality of air inlets include a plurality of channels passing through the wall of the body of the blower, wherein the lateral extent of the plurality of channels is parallel to each other.
9. The hair dryer according to claim 8 further includes a filter, the filter being disposed within the main body of the hair dryer, near the plurality of air inlets, wherein, The surface of the filter is oriented relative to the plurality of air inlets such that the surface is perpendicular to the lateral extent of the plurality of channels.
10. The hair dryer according to any one of claims 7 to 9, further comprising a baffle disposed within the main body of the hair dryer, near the air inlet, wherein, The surface of the baffle is configured to guide the air entering the body of the blower through the air inlet to flow along the axial direction of the body toward the fan assembly housed within the body.
11. The hair dryer according to any one of claims 7 to 10, further comprising a user interface display, wherein, The user interface display is located at the end of the main body near the circular air intake.
12. A hair dryer, comprising: A main body housing a fan assembly including a motor operable to cause rotation of an impeller, wherein the fan assembly is operable to draw in air through an inlet; and A stator blade assembly disposed within the inlet of the fan assembly includes a blade arrangement wherein the blades are operably angled relative to the fan assembly to draw in air, and the angled arrangement of the blades of the stator blade assembly guides the air drawn in by the fan assembly to rotate in a direction corresponding to the rotation direction of the impeller of the fan assembly.
13. The hair dryer according to claim 12, wherein, The blade arrangement includes a plurality of blades extending between an inner support and an outer support ring, wherein the plurality of blades are equidistant from each other.
14. The hair dryer according to claim 12 or 13, wherein, The blades are operable at an angle of approximately 25° relative to the fan assembly to the direction of air intake.
15. The hair dryer according to any one of claims 12 to 14, further comprising a plurality of Helmholtz resonant cavities arranged around the periphery of the inlet of the fan assembly.
16. A hair dryer, comprising: main body; A fan assembly for generating airflow through the body of the blower; A heater, operable to heat air passing through the body; as well as Control electronics for controlling the operation of the hair dryer. A channel is provided around the periphery of the main body of the hair dryer; The fan assembly is configured to push some air that has not been heated by the heater through the channel; and At least some of the control electronics are arranged such that a portion of the control electronics is close to the airflow passing through the channel, wherein the airflow dissipates heat from the portion of the control electronics.
17. A hair dryer, comprising: main body; A fan assembly for generating airflow through the body of the blower, the fan assembly having an air intake; A heater, operable to heat air passing through the body; as well as Control electronics for controlling the operation of the hair dryer. The hair dryer is configured such that when the fan assembly is activated, at least some of the air drawn into the intake port of the fan assembly is drawn across the surface of the control electronics.
18. The hair dryer according to claim 17, further comprising a handle, wherein, The control electronics are housed in a cavity within the handle and are provided with an air passage in fluid communication with the cavity housing the control electronics; and the outlet of the air passage is located near the intake port of the fan assembly, such that when the fan assembly is running, air from the air passage is drawn into the intake port, thereby generating an airflow across the surface of the control electronics.
19. A hair dryer, comprising: The main body has an air inlet and an air outlet; A fan assembly for generating airflow from the air inlet to the air outlet through the body of the blower; as well as A heater, operable to heat air passing through the body; The air outlet has a spherical object at its center, the spherical object having a first end closer to the fan assembly and a second end closer to the air outlet. The surface of the spherical object at the second end and the portion of the air outlet concentric with the second end of the spherical object are configured to guide air around the spherical object inward toward an axis passing through the center of the air outlet.
20. The hair dryer according to claim 19, wherein, The first end of the sphere is hemispherical, and the second end of the sphere is tapered.
21. The hair dryer according to claim 19 or 20, wherein, A channel is provided near the periphery of the main body of the hair dryer, and the fan assembly is configured to push unheated air through the channel and discharge it from the periphery of the air outlet.
22. The hair dryer according to claim 21, wherein, The portion of the channel concentric with the second end of the sphere is configured to guide air through the channel inward toward an axis passing through the center of the air outlet.
23. A hair dryer including a magnetic attachment system, the hair dryer comprising: The main body has an air outlet at one end; A fan assembly for generating airflow through the body of the blower; A heater, operable to heat air passing through the body; A magnet for attaching an accessory to the end of the body of the hair dryer where the air outlet is located; in, A channel is provided around the periphery of the main body of the hair dryer, and the channel has an outlet located around the air outlet of the hair dryer; The fan assembly is configured to push some air that has not been heated by the heater through the channel; and The magnet is separated from the airflow passing through the body of the blower and heated by the heater via the channel.
24. The hair dryer according to claim 23, wherein, The surface of the magnet located at the end of the hair dryer near the air outlet is inclined, such that the portion of the magnet closer to the airflow passing through the body of the hair dryer and heated by the heater is recessed from the end of the hair dryer body relative to the portion of the magnet further away from the airflow passing through the body of the hair dryer and heated by the heater.
25. A hair dryer system, comprising: The hair dryer according to claim 23 or 24; as well as Accessories, said accessories for attachment to the hair dryer according to claim 23 or claim 24, said accessories comprising: An extension portion, said extension portion being inserted into a channel near the periphery of the main body of the hair dryer; and A ferromagnetic component is disposed near the extension portion, wherein when the extension portion is inserted into the channel near the periphery of the body of the hair dryer, the ferromagnetic component is attracted to the end of the body of the hair dryer by a magnet disposed on the hair dryer.
26. The hair dryer system according to claim 25, wherein, The surface of the ferromagnetic component is angled to provide a tilted surface that complements the tilted surface of the hair dryer, and the accessory is designed to attach to the tilted surface of the hair dryer.
27. An accessory attached to a hair dryer, the accessory comprising: An extension portion is inserted into a channel near the periphery of the main air outlet of the blower; A magnet, wherein the magnet is disposed near the extension portion; as well as The inner wall, when the extension is inserted into the channel, is operable to prevent air discharged from the main outlet of the blower from passing close to the magnet.
28. The accessory according to claim 27, wherein, The surface of the magnet is angled to provide a tilted surface that complements the tilted surface of the hair dryer, and the accessory is designed to attach to the tilted surface of the hair dryer.
29. The hair dryer system or accessory according to any one of claims 25 to 28, wherein, The accessories are nozzles, diffusers, or forked combs.
30. A hair dryer for use with the accessory of claim 27 or 28, comprising: The main body has an air outlet at one end; A fan assembly for generating airflow through the body of the blower; A heater, operable to heat air passing through the body; in, A channel is provided near the periphery of the main body of the hair dryer, the channel having an outlet located around the air outlet of the hair dryer, the channel being configured to receive an extension of the accessory; The fan assembly is configured to push some air that has not been heated by the heater through the channel; and A ferromagnetic component is provided near the air outlet, and the ferromagnetic component is separated from the airflow passing through the body of the blower and heated by the heater through the channel.
31. The hair dryer according to claim 30, wherein, The surface of the ferromagnetic component is angled to provide a sloped surface that complements the sloped surface of the accessory, which is designed to attach to the hair dryer.
32. The hair dryer according to claim 23 or 24, or the accessory or hair dryer system according to any one of claims 27 to 29, wherein, The magnet is a ring magnet, or the magnet comprises a plurality of magnets arranged in a ring.
33. The hair dryer according to claim 23 or 24, or the accessory or hair dryer system according to any one of claims 27 to 29, wherein, The magnet is a neodymium magnet.
34. A diffuser accessory attached to a hair dryer, comprising: An inlet for receiving air; A panel having a concave surface defining a bowl-shaped portion; A set of forked teeth extending into the bowl-shaped portion; The panel is provided with multiple holes to allow air to enter the bowl-shaped portion through the panel and the forked teeth, and at least some of the holes are provided in the central portion of the panel. as well as A baffle is disposed in the central portion of the inlet, the baffle being operable to redirect air entering the air inlet from the central portion of the panel.
35. The diffuser fitting of claim 34 further includes an inner wall operable to divert peripheral air entering the inlet from air entering the central portion of the inlet.
36. A hair dryer, comprising: main body; A fan assembly for generating airflow through the body of the blower; A heater, operable to heat air passing through the body; as well as Control electronics for controlling the operation of the heater and the fan assembly; The main body includes a reflective layer, a light guide layer, a diffuser, and a mask; and the hair dryer also includes a light source, which is operable to illuminate the light guide layer of the main body in response to the operation selection of the control electronics.
37. A hair dryer, comprising: The main body has an air inlet; A filter, operable to prevent dirt and debris from entering the body of the blower through the air inlet; A fan assembly for generating airflow through the body of the blower; A heater, operable to heat air passing through the body; as well as A dust sensor, operable to determine an estimated dust level near the filter and generate a signal when the estimated dust level exceeds a predetermined level.
38. The hair dryer according to claim 37, wherein, The dust sensor includes a light source and a light sensor, wherein the dust sensor is operable to determine an estimated dust level near the filter based on the proportion of light emitted by the light source detected by the light sensor.
39. The hair dryer according to claim 37, wherein, The dust sensor is operable to determine an estimated dust level near the filter based on at least one of the following: the highest temperature detected near the filter; the heating time of the hair dryer; the airflow through the body; the power required for the fan assembly to generate the airflow; the usage interval of the hair dryer; and the cumulative usage of the hair dryer.
40. The hair dryer according to any one of claims 37 to 39, wherein, The hair dryer also includes a user interface, and the generated signal is operable to cause the user interface to output a warning when the estimated dust level near the filter exceeds a predetermined level.
41. The hair dryer according to any one of claims 37 to 39, wherein, The heater is prohibited from starting when the estimated dust level exceeds a predetermined level.
42. The hair dryer according to any one of claims 37 to 39, further comprising a cleaner operable to remove dust from the filter, wherein, The cleaner can be activated when the estimated dust level exceeds a predetermined level.
43. The hair dryer according to claim 40 or 41, further comprising a sensor operable to detect whether the filter is correctly installed on the hair dryer, wherein, The sensor is operable to cause the user interface to output a warning and / or disable the heater when it detects that the filter is not installed correctly.