Hair dryer

Abstract

The hair dryer comprises a motor, a fan, a power port and a shell assembly, and the fan is driven by the motor to rotate to generate airflow; the power port is used for connecting a power device to supply power to the motor; an air inlet and an air blowing opening are formed in the shell assembly, and airflow flows in from the air inlet and flows out from the air blowing opening. The product of the rated rotating speed of the motor and the number of the fan blades is larger than or equal to 16000 Hz, and the unit of the rated rotating speed is revolution / second. According to the technical scheme, the blower is good in blowing effect and low in noise, and the user experience can be improved.

Description

Technical Field

[0001] This application relates to the field of garden tool technology, specifically to a hair dryer. Background Technology

[0002] A hair dryer is a common gardening tool, mainly used to blow away fallen leaves, dust, puddles, snow, and other debris. During use, users have different needs regarding airflow and power depending on the environment.

[0003] In related technologies, to improve the efficiency of hair dryers, it is usually necessary to adjust the airflow or air volume. This adjustment is primarily achieved by adding a fan or using a high-power motor. However, both methods result in relatively high noise levels and a poor user experience.

[0004] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content

[0005] One object of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one object of this application is to provide a hair dryer.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] This application provides a hair dryer, including a motor, a fan, a power port, and a housing assembly. The fan is driven by the motor to rotate and generate airflow. The power port is used to connect a power supply device to power the motor. The housing assembly forms an air inlet and an air outlet, with airflow flowing in from the air inlet and out from the air outlet. The product of the rated speed of the motor and the number of fan blades is greater than or equal to 16000Hz, where the rated speed is measured in revolutions per second.

[0008] In some embodiments, the product of the motor's rated speed and the number of fan blades is greater than or equal to 20,000 Hz.

[0009] In some embodiments, the housing assembly includes a housing body and a duct detachably connected to the housing body. The housing body forms an air inlet, the duct forms an air outlet, and a motor is disposed within the housing body and located between the air inlet and the air outlet.

[0010] In some embodiments, the housing assembly includes a housing body and a connector attached to the housing body, with the motor located at the end of the connector away from the housing body.

[0011] In some embodiments, the motor includes a motor housing and a stator and a rotor disposed within the motor housing; the fan is driven to rotate by the rotor.

[0012] In some embodiments, there is an air outlet duct between the motor and the air outlet, and the diameter D3 of the air outlet duct is greater than or equal to 50 mm and less than or equal to 55 mm.

[0013] In some embodiments, the rated speed of the motor is greater than or equal to 1300 rpm and less than or equal to 1700 rpm.

[0014] In some embodiments, the rated power of the motor is greater than or equal to 750W and less than or equal to 1500W.

[0015] In some embodiments, the diameter D1 of the motor is greater than or equal to 50 mm and less than or equal to 55 mm.

[0016] In some embodiments, the outer diameter D2 of the fan blade is greater than or equal to 50 mm and less than or equal to 55 mm.

[0017] In some embodiments, the number of fan blades ranges from 17 or more to 23 or less.

[0018] In some embodiments, the ratio of the fan blade height H to its minimum blade spacing L1 is greater than or equal to 2 and less than or equal to 3.

[0019] In some embodiments, the moving blade chord length L2 of the fan blade is greater than or equal to 6 mm and less than or equal to 10 mm.

[0020] In some embodiments, the fan blade installation angle α is greater than or equal to 45° and less than or equal to 55°.

[0021] In some embodiments, the housing assembly includes a housing body and a connector connected to the housing body; the motor includes a motor housing and a stator and a rotor disposed within the motor housing, and the fan is located within the motor housing and is driven to rotate by the rotor.

[0022] In some embodiments, the connector includes at least two telescopic members that are telescopically connected along the length of the connector.

[0023] In some embodiments, the telescopic members are interleaved, and one of two adjacent telescopic members is provided with a plurality of positioning holes spaced apart along the telescopic direction, and the other is provided with an elastic locking protrusion that can engage with the positioning holes.

[0024] In some embodiments, the angle of the motor housing relative to the housing body is adjustable to adjust the position and orientation of the air outlet.

[0025] In some embodiments, the motor housing is rotatably mounted on the connector about its radial direction to adjust the position and orientation of the air inlet.

[0026] In some embodiments, the connector further includes a rotating member rotatably connected to the end of the telescopic member away from the housing body, and the motor housing is mounted on the rotating member.

[0027] In some embodiments, the housing assembly further includes a retaining sleeve, which is fixed to the connector, and the motor housing is fixed inside the retaining sleeve.

[0028] In some embodiments, the number of motors is at least two, and all motors are capable of operating independently.

[0029] In some embodiments, at least two motors are arranged in a straight line; or at least two motors are arranged in a matrix; or at least two motors are arranged in a circular pattern.

[0030] In some embodiments, the rated speeds of all motors are not all the same.

[0031] The advantages of this application are:

[0032] This application provides a hair dryer, including a motor, a fan, a power port, and a housing assembly. The fan is driven by the motor to rotate and generate airflow. The power port is used to connect a power supply to power the motor. The housing assembly forms an air inlet and an air outlet, with the airflow flowing in through the air inlet and out through the air outlet. The product of the motor's rated speed and the number of fan blades is greater than or equal to 16000Hz, where the rated speed is measured in revolutions per second (rpm). This technical solution provides a hair dryer with good airflow and low noise, improving the user experience. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a hair dryer in an example provided in an embodiment of this application;

[0034] Figure 2 yes Figure 1 A partial sectional view of a medium-sized hair dryer;

[0035] Figure 3 yes Figure 1 A partial exploded view of a medium-sized hair dryer;

[0036] Figure 4 This is an exploded view of the hair dryer provided in the embodiments of this application;

[0037] Figure 5 This is a schematic diagram of the motor structure provided in an embodiment of this application;

[0038] Figure 6 yes Figure 3 A front view of the central fan;

[0039] Figure 7 yes Figure 3Side view of the central fan;

[0040] Figure 8 yes Figure 7 A schematic diagram of the cross-section of the root of the middle fan blade;

[0041] Figure 9 yes Figure 3 Schematic diagram of the structure of the central fan;

[0042] Figure 10 This is a schematic diagram of the structure of a hair dryer in another example provided in the embodiments of this application;

[0043] Figure 11 yes Figure 10 A magnified view of a medium-sized hair dryer. Detailed Implementation

[0044] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0045] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0046] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0047] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0048] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0049] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0050] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0051] Figure 1 A schematic diagram of the structure of a hair dryer, as provided in this application, is shown. Figure 2 It shows Figure 1 A partial cross-sectional view of a medium-sized hair dryer. Figure 3 It shows Figure 1 A partially exploded view of a medium-sized hair dryer. (See diagram below.) Figures 1 to 3 As shown, the hair dryer includes a housing assembly, a power port 111, a motor 100, and a fan 200. The housing assembly has an air inlet and an air outlet. The power port 111 connects to a power supply or AC power to supply power to the motor 100. The motor 100 drives the fan 200 to rotate, generating airflow. The airflow enters through the air inlet and exits through the air outlet to perform garden cleaning operations.

[0052] The housing assembly includes a housing body 11, which has a battery connector for mounting a power port 111, which can be connected to a power supply device. The power supply device can be a battery pack or AC power.

[0053] To prevent large objects from entering the air duct through the air inlet, the housing assembly also includes an air mesh 14. The air mesh 14 has a grid-shaped air outlet. The air mesh 14 is detachably installed on the housing body 11 and covers the air inlet. The grid-shaped air outlet on the air mesh 14 can facilitate the flow of air and prevent large debris from entering the air inlet, ensuring that the fan 200 can work normally and improving the stability of the blower.

[0054] Figure 4 An exploded view of the hair dryer provided in this application is shown. Figure 4 As shown, the housing assembly also includes a duct 12, which is connected to the housing body 11. The housing body 11 forms the aforementioned air inlet, and the duct 12 forms the aforementioned air outlet. Specifically, the housing body 11 has a cylindrical structure 112 in the air outlet direction of the installation space, and the duct 12 is detachably connected to the cylindrical structure 112. The cylindrical structure 112 and the duct 12 together form the air outlet duct of the blower. When the motor 100 drives the fan 200 to rotate, the airflow flows in from the air inlet, passes through the fan 200 and the motor 100, enters the air outlet duct, and finally flows out from the air outlet of the duct 12. The air outlet duct can guide the airflow and ensure that the airflow is blown out stably. The outer diameter D3 of the air outlet duct is greater than or equal to 50 mm and less than or equal to 55 mm. In some embodiments, the outer diameter D3 of the air outlet duct is set to 53 mm.

[0055] In some embodiments, the duct 12 is detachably mounted on the housing body 11. Specifically, the duct 12 can be detachably fitted onto the housing body 11 via a snap-fit ​​mechanism. In other embodiments, the duct 12 can also be fitted onto the housing body 11 via a threaded connection, or the duct 12 can be detachably fixed to the housing body 11 via screws. In other embodiments, the duct 12 can also be fixed to the housing body 11 in a non-detachable manner, such as by an interference fit, or by adhesive fixation, etc., without limitation.

[0056] The housing assembly also includes an antistatic ring 13, which is installed at the end of the cylindrical structure 112 away from the motor 100. The antistatic ring 13 is limited and fixed by limiting steps inside the cylindrical structure 112 and the air duct 12 to ensure that the antistatic ring 13 is fixed in the air outlet duct. The antistatic ring 13 is used to prevent static electricity from being generated in the airflow within the air outlet duct, ensuring that the motor 100 can operate normally.

[0057] Figure 5 A schematic diagram of the structure of the motor 100 provided in this application is shown. Figure 5 Combination Figure 3 As shown, the motor 100 includes a motor housing 101 and a stator (not shown) and a rotor (not shown) disposed within the motor housing 101. The fan 200 is located within the motor housing 101 and is driven to rotate by the rotor. Specifically, the motor housing 101 includes an outer cylinder 1011, an inner cylinder 1012, and a flow guide bracket 1013 connecting the outer cylinder 1011 and the inner cylinder 1012. The outer cylinder 1011 is installed within the mounting space of the housing body 11. A flow guide bracket 1031 is disposed between the inner cylinder 1012 and the outer cylinder 1011, and the inner cylinder 1012 and the outer cylinder 1011 are coaxially arranged. The stator and rotor of the motor 100 are both installed within the inner cylinder 1012, and the rotor is used to drive the fan 200 to rotate. It should be noted that the stator and rotor of the motor 100 can be selected from existing mature stator-rotor structures, which will not be described in detail here.

[0058] The diameter D1 of motor 100 is greater than or equal to 50 mm and less than or equal to 55 mm. The diameter of motor 100 refers to the outer diameter of the outer cylinder 1011 of motor housing 101. If the diameter of motor 100 is too large, the installation space requirement for housing body 11 will be higher, resulting in a larger size of housing body 11; if the diameter of motor 100 is too small, it will affect the rated power of motor 100, and thus affect the speed of fan 200, making it impossible to ensure that the hair dryer can operate normally.

[0059] like Figure 5 Combination Figures 2 to 3 As shown, the motor 100 also includes a buffer sleeve 102. The housing body 11 has an installation space. The buffer sleeve 102 is fitted over the motor housing 101 and installed within the installation space inside the housing body 11. The buffer sleeve 102 not only stably fixes the motor 100 within the housing body 11 but also provides a certain degree of vibration reduction and noise reduction. For example, the buffer sleeve 102 can be made of foam or other sound-insulating and noise-reducing materials; no limitation is made here.

[0060] In related technologies, to improve the efficiency of hair dryers, it is usually necessary to adjust the airflow or air volume. There are two main ways to adjust the airflow or air volume: first, by using multiple stacked fans to increase airflow; second, by increasing the air inlet area of ​​the hair dryer to increase air volume. Regarding the first method, using multiple stacked fans to increase air volume and air pressure, because each fan has the same blade design and number, and each fan rotates at the same speed, the airflow generated by the fans is somewhat obstructed, resulting in wind loss and power loss. This prevents the hair dryer from achieving optimal blowing effect and also results in relatively high operating noise. Regarding the second method, increasing the air inlet area requires a corresponding increase in the size of the hair dryer's casing, thus reducing the ease of operation.

[0061] To address the aforementioned issues, the hair dryer provided in this application improves the structural and performance parameters of the motor 100, thereby increasing the airflow and volume, reducing air loss and power consumption, and decreasing noise while ensuring that the overall size of the hair dryer is not excessively increased.

[0062] To improve the airflow and power of the hair dryer, the product of the rated speed of the motor 100 and the number of fan blades 201 is greater than or equal to 16000Hz. Here, the rated speed of the motor 100 is measured in revolutions per second (rpm), and refers to the speed of the motor 100 at its rated voltage. When the product of the rated speed of the motor 100 and the number of fan blades 201 is greater than or equal to 16000Hz, the airflow and power of the fan 200 can be effectively improved without increasing the area of ​​the air inlet, and the user perceives less noise, thus improving the user experience. In one embodiment, the product of the rated speed of the motor 100 and the number of fan blades 201 is greater than or equal to 20000Hz, resulting in a better improvement in the airflow and power of the fan 200 and an even better user experience. In another embodiment, the product of the rated speed of the motor 100 and the number of fan blades 201 can also be greater than or equal to 17000Hz and less than or equal to 20000Hz.

[0063] Understandably, to ensure that the product between the rated speed of motor 100 and the number of fan blades 201 is greater than or equal to 20,000 Hz, this can be achieved in three ways: First, when the model of motor 100 is determined, the number of fan blades 201 of fan 200 can be increased; second, when the number of fan blades 201 of fan 200 is determined, a motor 100 with a higher rated speed can be selected; third, a motor 100 with a higher rated speed and a fan 200 with more fan blades 201 can be selected. Technical personnel can choose the appropriate method according to actual needs, and no restrictions are imposed here.

[0064] The rated speed of motor 100 is greater than or equal to 1300 rpm and less than or equal to 1700 rpm, for example, it could be 1400 rpm, 1500 rpm, or 1600 rpm. Alternatively, the rated speed of motor 100 is greater than or equal to 80000 rpm and less than or equal to 100000 rpm, for example, it could be 80000 rpm, 90000 rpm, or 100000 rpm.

[0065] The rated power of motor 100 is greater than or equal to 750W and less than or equal to 1500W. It can be 750W, 760W, 770W, 780W, 790W, 800W, 850W, 900W, 950W, 1000W, 1100W, 1200W, 1300W, 1400W, 1500W, etc., or it can be greater than or equal to 800W, with a minimum of 1200W, or it can be greater than or equal to 1000W and less than or equal to 1500W. Selecting the rated power of motor 100 can reduce the power consumption of the hair dryer while ensuring its normal function.

[0066] Figure 6 It shows Figure 3 A front view of the 200mm fan. Figure 6 Combination Figure 3 As shown, the outer diameter D2 of the fan blade 201 of the fan 200 is greater than or equal to 50 mm and less than or equal to 55 mm. The outer diameter of the fan blade 201 can be any value among 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, 50 mm, 51 mm, 52 mm, 53 mm, 54 mm, and 55 mm, or any value among 45.5 mm, 46.5 mm, 47.5 mm, 48.5 mm, 49.5 mm, 50.5 mm, 51.5 mm, 52.5 mm, 53.5 mm, 54.5 mm, and 55.5 mm. This is because, under the same fan speed, although a larger outer diameter of the fan blade 201 results in higher airflow, a larger outer diameter D2 of the fan blade 201 places higher demands on the size of the motor housing 101, and consequently, on the size of the housing body 11. Therefore, in order to balance the airflow of the fan 200 and the ease of operation of the blower, in some embodiments, the outer diameter D2 of the fan blade 201 is greater than or equal to 50 mm and less than or equal to 55 mm.

[0067] The number of fan blades 201 is greater than or equal to 17 and less than or equal to 23. The number of fan blades 201 can be any value among 17, 18, 19, 20, 21, 22, and 23. This is because when the number of fan blades 201 is greater, the distance between the fan blades 201 becomes smaller. If the distance between the fan blades 201 is too small, it will cause airflow turbulence, increase the friction on the surface of the fan blades 201, and reduce the efficiency of the fan 200. Conversely, when the number of fan blades 201 is less than 17, the distance between the fan blades 201 will be too large, which can easily lead to increased pressure loss and insufficient air pressure in the fan 200. Therefore, in order to balance the noise reduction and wind power performance of the fan 200, in some embodiments, the number of fan blades 201 is greater than or equal to 17 and less than or equal to 23.

[0068] Figure 7 It shows Figure 3 Side view of the 200mm fan. Figure 7 As shown, the blade installation angle α of fan 200 is greater than or equal to 45° and less than or equal to 55°, and can be 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, or 54°. It should be noted that the blade installation angle refers to the angle between the mid-arc line (referred to as the root mid-arc line N) of the shape formed by the connection between the root of fan blade 201 and the hub 202 of fan 200, and the hub axis M of fan 200. By adjusting the size of the blade installation angle α, and combining it with the blade shape of fan blade 201, an optimal airflow deflection angle can be obtained when fan 200 rotates, thereby increasing the airflow and wind power of fan 200.

[0069] Figure 8 It shows Figure 7 A schematic cross-sectional view of the root of the middle fan blade 201. (See diagram below.) Figure 8 Combination Figure 7 As shown, the moving blade chord length L2 of the fan blade 201 of the fan 200 is greater than or equal to 6mm and less than or equal to 10mm, and can be 6.5mm, 7mm, 7.5mm, 7.8mm, 8mm, 8.5mm, 9mm, 9.5mm, etc. Here, the moving blade chord length L2 of the fan blade 201 refers to the chord length of the arc at the root of the fan blade 201.

[0070] Figure 9 It shows Figure 3 A structural schematic diagram of the medium fan 200. (See diagram below.) Figure 9 Combination Figure 8As shown, the ratio between the blade height H and the minimum blade spacing L1 of fan 200 is greater than or equal to 2 and less than or equal to 3, and can be any value among 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, and 3. It should be noted that the blade height H refers to the distance between the outer contour of the blade 201 and the hub 202 of the fan 200, and the minimum blade spacing L1 refers to the length of the line connecting the midpoints of the roots of two adjacent blades 201. The magnitude of the ratio between the blade height H and the minimum blade spacing L1 directly affects the wind power and air volume of fan 200.

[0071] Furthermore, the fan blade 201 is preferably made of metal, such as aluminum alloy. Metal has better structural strength, and its surface is easier to machine into a smooth surface, which reduces friction between the airflow and the fan blade 201, thus reducing wind loss. Aluminum alloy is also lighter, which reduces the load requirements on the motor 200 and improves motor efficiency. In some embodiments, the fan blade 201 may also be made of plastic or other materials; this is not a limitation.

[0072] Figure 10 A schematic diagram of the structure of a hair dryer, as shown in another example provided in this application, is illustrated. Figure 11 for Figure 10 A magnified view of a section of a medium-sized hair dryer. (See image below.) Figures 10 to 11 and combined Figure 5 As shown, the hair dryer includes a housing assembly, a motor 100, and a fan 200. The housing assembly includes a housing body 21 and a connector 22. The connector 22 is fixed to the housing body 21 and is used to mount the motor 100. The motor 100 includes a motor housing 101 and a stator and a rotor disposed within the motor housing 101. The motor housing 101 has an air inlet and an air outlet. The fan 200 is driven to rotate by the rotor to generate airflow. The airflow flows in from the air inlet and flows out from the air outlet to achieve garden cleaning operations.

[0073] The housing assembly includes a fixed cylinder 24 and an air filter 23. The fixed cylinder 24 is used to mount the motor 100, and the air filter 23 is fixed to the air inlet end of the fixed cylinder 24 to prevent large objects from entering the fixed cylinder 24 and ensure that the fan 200 can operate normally. It should be noted that... Figures 10 to 11 In the middle, the motor 100 and fan 200 are shielded by the fixing cylinder 24 and the air mesh 23. The structure of the motor 100 and fan 200 can be referred to Figure 3 and Figure 5 The structure of the motor 100 and the fan 200.

[0074] In some embodiments, the fixing cylinder 24 is fixed to the connector 22, and the motor 100 is fixed inside the fixing cylinder 24 to achieve stable installation of the motor 100. Specifically, the fixing cylinder 24 includes a first half-cylinder 241 and a second half-cylinder 242. The first half-cylinder 241 is fixed to one of the connectors 22, the second half-cylinder 242 is fixed to the other connector 22, and the motor 100 is fixed within the space formed by the first half-cylinder 241 and the second half-cylinder 242.

[0075] In some embodiments, the air mesh 23 has a grille-shaped air vent. The air mesh 23 is detachably installed on the fixed cylinder 24 and covers the air inlet. The grille-shaped air vent on the air mesh 23 can facilitate the flow of air and prevent large debris from entering the air inlet, ensuring that the fan 200 can work normally.

[0076] It should be noted that... Figure 10 Example hair dryer with Figure 1 The main difference between the hair dryers in the examples is the location of the motor 100; all other aspects are the same.

[0077] The hair dryer also includes a power port 211. The housing body 21 has a battery connector for mounting the power port 211, which is used to connect a power supply device to supply power to the motor 100. The power supply device can be a battery pack or AC power.

[0078] Figure 10 In the example hair dryer, the air filter 23 is mounted on the fixed cylinder 24. Figure 1 In the example hair dryer, the air mesh 23 is installed on the housing body 21. This is an adaptation due to the different positions of the air inlet. It can be understood that the air mesh 23 is used for ventilation and shielding at the air inlet. The air mesh 23 is installed on the component where the air inlet is located. Technicians can make corresponding adjustments to the structure and size of the air mesh 23 based on this change, which will not be elaborated here.

[0079] Should Figure 10 Example hair dryer motor 100 with Figure 1 The structural and performance parameters of the motor 100 in the example hair dryer can be the same. For example, the product between the rated speed of the motor 100 and the number of fan blades 201 can be greater than or equal to 16000Hz; the rated speed of the motor can be greater than or equal to 1300 rpm and less than or equal to 1700 rpm; and the rated power of the motor can be greater than or equal to 750W and less than or equal to 1500W.

[0080] Should Figure 10 Example hair dryer fan 200 with Figure 1The structural and performance parameters of the fan 200 in the example hair dryer can be the same, and will not be listed one by one here.

[0081] Next, we will introduce this. Figure 10 Example hair dryer with Figure 1 The difference in the example hair dryer: the installation location and method of motor 100.

[0082] See also Figures 10 to 11 There are two connectors 22, which are symmetrically spaced apart. The motor housing 103 is fixed to the two connectors 22 to ensure the stability of the motor housing 103. Of course, in other embodiments, the number of connectors 22 can be any number, such as one, three, four, or five. The specific number can be selected according to the diameter of the connector 22, the size of the housing body 21, and the overall weight of the motor 100, and is not limited here.

[0083] The connector 22 includes at least two telescopically connected telescopic members, each of which can extend and retract to adjust the overall length of the connector 22. In practical applications, the motor 100 is installed at the end of the connector 22 furthest from the housing body 21. When the length of the connector 22 increases, the distance between the motor 100 and the housing body 21 increases, thus facilitating purging operations at locations farther from the housing body 21; when the length of the connector 22 decreases, the distance between the motor 100 and the housing body 21 decreases, thus facilitating purging operations at locations closer to the housing body 21.

[0084] To achieve the telescopic connection between the telescopic components, multiple telescopic components are hollow structures, interleaved with each other. One of two adjacent telescopic components has multiple positioning holes 2221 spaced apart along the telescopic direction, while the other has an elastic locking protrusion 2231. When the telescopic components are pulled out, the elastic locking protrusion 2231 can selectively engage with the required positioning holes 2221 as needed, thereby adjusting the overall length of the connector 22 and ensuring the relative fixation between the telescopic components.

[0085] In this embodiment, the connector 22 includes three telescopic members, which are referred to as the first telescopic member 221, the second telescopic member 222, and the third telescopic member 223 for ease of description. The first telescopic member 221 is fixed to the housing body 21. One end of the second telescopic member 222 is telescopically inserted into the first telescopic member 221, and one end of the third telescopic member 223 is telescopically inserted into the other end of the second telescopic member 222. The motor housing 103 is fixed to the third telescopic member 223. The first telescopic member 221 has three positioning holes 2221 spaced apart along the telescopic direction. The second telescopic member 222 has an elastic locking protrusion 2231. When the second telescopic member 222 is pulled out, the elastic locking protrusion 2231 on the second telescopic member 222 engages with the positioning hole 2221 on the first telescopic member 221, and the second telescopic member 222 and the first telescopic member 221 are relatively fixed. Similarly, the second telescopic member 222 is provided with three positioning holes 2221 spaced apart along the telescopic direction, and the third telescopic member 223 is provided with an elastic locking protrusion 2231. When the third telescopic member 223 is pulled out, when the elastic locking protrusion 2231 on the third telescopic member 223 is engaged with the positioning hole 2221 on the second telescopic member 222, the third telescopic member 223 and the second telescopic member 222 are relatively fixed.

[0086] In other embodiments, the number of telescopic members in the connector 22 is not limited to three, and the diameter of the telescopic members is not limited to gradually decreasing or gradually increasing; other methods are also possible, which are not limited here. In addition, the number of positioning holes 2221 on the telescopic members is not limited to three; it can be any number such as two, four, five, six, seven, or eight, which are not limited here.

[0087] Specifically, the first half-cylinder 241 of the fixing cylinder 24 is fixed to the third telescopic member 223 of one of the connecting members 22, and the second half-cylinder 242 of the fixing cylinder 24 is fixed to the third telescopic member 223 of the other connecting member 22. The motor housing 103 is fixed within the space formed by the first half-cylinder 241 and the second half-cylinder 242. Of course, in some other embodiments, the fixing method between the motor housing 103 and the connecting member 22 may not use the fixing cylinder 24, and other methods may be used, such as directly fixing the motor housing 101 of the motor 100 to the connecting member 22. This is not a limitation.

[0088] To improve the applicability of the hair dryer, the motor housing 103 can be set to be angle-adjustable relative to the housing body 21, so as to adjust the position and orientation of the air outlet on the motor housing 103, thereby adapting to the blowing operation in different occasions.

[0089] For example, the fixed cylinder 24 is movably mounted on the connector 22. When the fixed cylinder 24 moves, it can drive the motor 100 to move, thereby adjusting the position and orientation of the air inlet of the motor 100, providing more air outlet directions to adapt to blowing operations in different locations and improving the operability of the blower. Furthermore, the fixed cylinder 24 is rotatably mounted on the connector 22 about its radial direction. For instance, a rotating shaft protrudes from the outer wall of the fixed cylinder 24, and the connector 22 has a recess that rotatably engages with this rotating shaft. The blower also includes a locking and unlocking mechanism, which is used to lock the fixed cylinder 24 onto the connector 22, or to allow the fixed cylinder 24 to rotate relative to the connector 22 to adjust the angle of the motor 100. In actual use, the locking and unlocking mechanism is in a locked state to ensure that the fixed cylinder 24 and the connector 22 are relatively fixed, ensuring stable operation of the blower. When it is necessary to adjust the angle of the fixed cylinder 24, adjust the locking and unlocking mechanism to the unlocked state, then manually rotate the fixed cylinder 24 to the desired position, and then adjust the locking and unlocking mechanism to the locked state.

[0090] The connector 22 also includes a rotating member, which is rotatably connected to the end of the telescopic member away from the housing body 21. For example, the rotating member is rotatably mounted on the third telescopic member 223, and then the motor housing 101 is directly mounted on the rotating member or mounted on the rotating member through the fixing cylinder 24. By adjusting the angle or position between the rotating member and the telescopic member, the overall angle or position of the motor 100 can be adjusted to adapt to blowing operations at different positions and angles.

[0091] To improve the efficiency of the hair dryer, there are at least two motors 100. All motors 100 can operate independently; that is, all motors 100 can work simultaneously as needed, or only some can operate, depending on the specific requirements. When designing the hair dryer, a mode adjustment button can be provided on the housing 21. Different modes correspond to different operating states of the motors 100. For example, when there are two motors 100, the mode adjustment button can include a powerful mode and a basic mode. In powerful mode, both motors 100 work simultaneously, while in basic mode, one motor 100 is active and the other is inactive.

[0092] All motors 100 have different rated speeds to increase the number of adjustable modes that the hair dryer can achieve, subdivide different application scenarios, and reduce the energy consumption of the hair dryer while ensuring the blowing and cleaning operation.

[0093] It is understandable that at least two motors 100 can be arranged in a straight line, in a matrix, or in a circle. The specific arrangement can be designed according to the structure of the hair dryer and the arrangement of the connectors 22, and no restrictions are imposed here.

[0094] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A hair dryer, comprising: a motor; a fan driven to rotate by the motor to generate an air flow; the fan comprising fan blades; a power port for connecting a power supply device to power the motor; a housing assembly forming an air inlet and an air outlet, the air flow flowing into the air inlet and out of the air outlet; characterized in that: a product of a rated rotational speed of the motor and a number of the fan blades is greater than or equal to 16000 Hz, wherein the rated rotational speed is in units of revolutions per second.

2. The hair dryer of claim 1, wherein a product of a rated rotational speed of the motor and a number of the fan blades is greater than or equal to 20000 Hz.

3. The hair dryer of claim 1, wherein the housing assembly comprises a housing body forming the air inlet and an air duct detachably connected to the housing body, the air duct forming the air outlet, the motor being disposed in the housing body between the air inlet and the air outlet.

4. The hair dryer of claim 1, wherein the housing assembly comprises a housing body and a connecting member connected to the housing body, the motor being disposed at an end of the connecting member distal to the housing body.

5. The hair dryer of claim 1, wherein the motor comprises a motor housing and a stator and a rotor disposed in the motor housing; the fan is driven to rotate by the rotor.

6. The hair dryer of claim 1, wherein the motor has an air outlet duct between the motor and the air outlet, the air outlet duct having a diameter D3 greater than or equal to 50 mm and less than or equal to 55 mm.

7. The hair dryer of claim 1, wherein the motor has a rated rotational speed greater than or equal to 1300 revolutions per second and less than or equal to 1700 revolutions per second.

8. The hair dryer of claim 1, wherein, the motor has a rated power greater than or equal to 750 W and less than or equal to 1500 W.

9. The hair dryer of claim 1, wherein, the motor has a diameter D1 greater than or equal to 50 mm and less than or equal to 55 mm; the fan blades have an outer diameter D2 greater than or equal to 50 mm and less than or equal to 55 mm.

10. The hair dryer of claim 1, wherein, the number of the fan blades is greater than or equal to 17 and less than or equal to 23; a ratio of a fan blade height H of the fan to a minimum fan blade spacing L1 of the fan is greater than or equal to 2 and less than or equal to 3.

11. The hair dryer of claim 1, wherein, a blade chord length L2 of the fan blades is greater than or equal to 6 mm and less than or equal to 10 mm; a fan blade installation angle a of the fan is greater than or equal to 45° and less than or equal to 55°.

Images