A hair dryer

Abstract

The application relates to the field of hair dryers and provides a hair dryer. The hair dryer comprises a main body shell, the main body shell comprises a first shell and a handle inner shell, the first shell has a first central axis, and the axial two ends of the first shell are respectively an air outlet end and an air blocking end, the distance between the air outlet end and the air blocking end is less than a preset distance, the handle inner shell is connected to the axial middle part of the first shell, the handle inner shell has a second central axis, and the first central axis and the second central axis form a preset angle. The hair dryer provided by the application has the advantages that the axial two ends of the first shell are less than the preset distance, the main body shell of the hair dryer can meet the design requirements of small axial length and small volume, and the hair dryer has excellent use experience.

Description

Technical Field

[0001] This invention relates to the field of hair dryers, and more particularly to a hair dryer. Background Technology

[0002] Hair dryers consist of a main body and a handle. The handle contains fan blades and a motor, while the main body contains a heating element, a PCB board, and a mounting bracket. However, due to the thickness of the electronic components on the PCB board, the axial length of the heating element, and the mounting position of the bracket, the space inside the main body is extremely limited. Most hair dryers increase the axial length of the main body to meet the requirements of the length of the heating element and the thickness of the PCB board. This results in an excessively long main body, which cannot meet the needs of compact design and user experience. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention aims to provide a hair dryer in which the axial distance between the two ends of the first outer shell is less than a preset distance. In this case, the main body shell of the hair dryer can meet the design requirements of small axial length and small size, resulting in an excellent user experience.

[0004] To achieve the above objectives, the present invention provides a hair dryer, including a main body shell, the main body shell including a first outer shell and a handle inner shell, the first outer shell having a first central axis and the two axial ends of the first outer shell being an air outlet end and a windproof end respectively, and the distance between the air outlet end and the windproof end being less than a preset distance;

[0005] The inner shell of the handle is connected to the axial center of the first outer shell, and the inner shell of the handle has a second central axis, with the first central axis and the second central axis forming a preset angle;

[0006] In some embodiments, the diameter of the inner handle shell does not exceed the axial length of the first outer shell, the distance from the connection point of the first outer shell and the inner handle shell to the air outlet is less than the radius of the inner handle shell, and the distance from the connection point of the first outer shell and the inner handle shell to the windproof end is less than the radius of the inner handle shell.

[0007] In some embodiments, the air outlet end is provided with an air outlet shell, and the air outlet shell is provided with a heating element, a PCB board and a first mounting bracket. The first mounting bracket is disposed between the heating element and the PCB board, and the first mounting bracket is fixedly connected to the heating element and the PCB board. The heating element is close to the air outlet end.

[0008] The windproof end is provided with a windproof shell, which is fixedly connected to the first mounting bracket.

[0009] In some embodiments, the PCB board is located on the side of the second central axis closer to the windbreak end;

[0010] There are gaps between the first mounting bracket and the PCB board and the heating component, and one end of the heating component is located on the side of the second central axis closer to the windproof end.

[0011] In some embodiments, the inner handle housing has a control portion at one end near the first outer housing, and the control portion is recessed toward the air outlet end along the radial direction of the inner handle housing.

[0012] The control unit has a second flow guide surface and a third flow guide surface. The second flow guide surface is disposed at one end of the control unit near the first outer shell. The PCB board is flush with the end of the second flow guide surface near the inner shell of the handle.

[0013] The third guide surface is located at the end of the control unit away from the first housing.

[0014] In some embodiments, the inner shell of the handle is further provided with a guide at one end near the first outer shell. The guide is close to the air outlet and has a first guide surface. The first guide surface and the second guide surface are directed to each other, so that the cold airflow of the inner shell of the handle can flow to the PCB board along the direction of the first guide surface of the guide.

[0015] The first mounting bracket is also provided with a plurality of first through holes, so that the airflow flowing through the PCB board can flow along the first central axis direction through the first through holes to the air outlet and flow through the heating component.

[0016] In some embodiments, the heating component includes a heating wire assembly, an annular inner shell, an annular outer shell, and a second mounting bracket. The annular inner shell is provided with a plurality of support members around the first central axis. The heating wire assembly is provided around each of the support members around the first central axis. The end of the heating wire assembly near the windproof end is located opposite to the second central axis.

[0017] Both the annular outer shell and the annular inner shell are disposed on the side of the second mounting bracket near the air outlet, and the annular outer shell is coaxially sleeved on the outside of the annular inner shell.

[0018] In some embodiments, the support members are symmetrical along the second central axis, and one of the support members near the inner shell of the handle is arranged along the second central axis, such that the airflow passing through this support frame is split and flows symmetrically to both sides of the heating element.

[0019] In some embodiments, the annular inner shell is fitted onto the side of the second mounting bracket near the air outlet end, and the second mounting bracket is further provided with a fixing groove at the corresponding position of the support member, and the support member is snapped into the fixing groove.

[0020] In some embodiments, one end of the first mounting bracket is provided with a first fastener and a first fixing structure. The first fastener fastens the four edges of the PCB board, and the first fixing structure passes through the PCB board and is fixedly connected to the windshield.

[0021] The other end of the first mounting bracket is provided with a second fastener and a second fixing structure. The second fastener fastens the second mounting bracket, and the second fixing structure is fixedly connected to the second mounting bracket.

[0022] In some embodiments, the annular inner shell is further provided with a thermistor and a temperature controller at one end near the air outlet. The thermistor and the temperature controller are symmetrical about the first central axis and are located at the middle of the left and right sides of the outer ring surface of the annular inner shell.

[0023] In some embodiments, a capacitor is provided in the middle of one end of the PCB board near the air outlet. The capacitor passes through the first mounting bracket and the second mounting bracket to reach the interior of the annular inner shell, and the capacitor does not extend beyond the annular inner shell.

[0024] In some embodiments, the handle inner shell includes a first inner shell and a second inner shell, wherein the first inner shell has an annular connecting portion at one end near the first outer shell, and the annular connecting portion fixes the middle part of the first outer shell.

[0025] The second housing is engaged with the first housing along the first central axis and the first housing is close to the air outlet.

[0026] In some embodiments, the first housing is provided with a control part on the side near the windproof end, and the annular connecting part is provided with a first plug-in part on the side near the air outlet end, and a guide member is plugged into the first plug-in part;

[0027] The first outer casing also contains an air supply component.

[0028] In some embodiments, a second outer casing is further included, which is fitted onto the inner casing of the handle along the second central axis.

[0029] The second outer shell is further provided with a cover and an inner filter frame at the end away from the first outer shell. The inner filter frame is snapped into the first outer shell, and the cover is detachably sleeved onto the inner filter frame by a magnetic structure.

[0030] Compared with the prior art, the hair dryer provided by the present invention has the following beneficial effects:

[0031] 1. The axial distance between the two ends of the first outer shell is less than the preset distance. At this time, the main shell of the hair dryer can meet the design requirements of small axial length and small size, and has an excellent user experience.

[0032] 2. The distance from the connection point between the inner shell of the handle and the first outer shell to the air outlet and the windproof end is less than or equal to the radius of the inner shell of the handle, so that the axial length of the main shell is less than or equal to twice the diameter of the inner shell of the handle. At this time, the axial length of the main shell does not exceed twice the diameter of the inner shell of the handle. The first outer shell has the design features of small axial length and small volume.

[0033] 3. The end of the heating element near the windshield is located on the side of the second central axis near the windshield, so that the hair dryer of the present invention can retain the axial length of the heating element as much as possible, so that the heating element can heat the airflow faster and better, thereby ensuring the hot air effect of the hair dryer.

[0034] 4. The PCB board is flush with the end of the second airflow guide surface near the inner shell of the handle. The cool airflow inside the inner shell of the handle can reach the surface of the PCB board through the second and third airflow guide surfaces of the control unit, which is conducive to heat dissipation of the PCB board and prevents the PCB board temperature from getting too high, thus affecting the service life of the PCB board.

[0035] 5. A guide is also provided at one end of the inner shell of the handle near the first outer shell. The first and second guide surfaces of the guide are directed to each other, which can reduce the cross-sectional area of ​​the air duct at the ventilation slot, thereby increasing the wind speed of the cold airflow through the ventilation slot, increasing the fluidity of the cold airflow, making it less prone to accumulation, so that the cold airflow flows to the front and rear sides of the PCB board, and the cold airflow gathers around the PCB board, further enhancing the heat dissipation effect of the PCB board.

[0036] 6. A support member near the inner shell of the handle is set along the second central axis, so that the airflow passing through this support member is split and flows symmetrically to both sides of the heating element. The airflow on both sides of the heating element is more uniform, thereby making the air outlet and heating effect more stable and reliable.

[0037] 7. The annular inner shell is fitted onto the second mounting bracket, and the support member is inserted into the fixing groove, so that the annular inner shell and the support member are firmly fixed to the second mounting bracket, which facilitates the fixed connection between the heating element and the first mounting bracket; at the same time, this fixing method can effectively reduce the axial length of the heating element.

[0038] 8. The thermistor and the temperature controller are symmetrical along the first central axis, resulting in a more rational spatial layout. At the same time, the thermistor and the temperature controller are relatively far apart, enabling them to monitor the temperature of the hot air passing through the heating wire assembly over a wider range. Meanwhile, the support component divides the annular inner shell into equal parts, with the thermistor and the temperature controller located at the middle of the left and right sides of the outer ring surface of the annular inner shell, precisely at the two points with the highest temperature inside the annular outer shell. This allows the thermistor and the temperature controller to monitor the temperature of the hot air passing through the heating wire assembly in a timely and accurate manner. Attached Figure Description

[0039] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0040] Figure 1 This is an overall view of a hair dryer;

[0041] Figure 2 This is a side view of the main shell;

[0042] Figure 3 This is a cross-sectional view of a hair dryer;

[0043] Figure 4 This is a layout diagram of the PCB board;

[0044] Figure 5 It's an exploded view of a hair dryer;

[0045] Figure 6 This is a structural diagram of the air outlet casing;

[0046] Figure 7 This is a structural diagram of the heating element;

[0047] Figure 8 This is the installation diagram for the annular inner shell;

[0048] Figure 9 This is a structural diagram of the first mounting bracket;

[0049] Figure 10 This is a connection diagram of the heating element and the PCB board;

[0050] Figure 11 This is a diagram showing the locations of the flow guide and control unit;

[0051] Figure 12 This is a structural diagram of the control unit;

[0052] Figure 13 This is a structural diagram of the flow guide component;

[0053] Figure 14 This is a diagram showing the positions of the casing and the inner filter frame.

[0054] Explanation of icon numbers:

[0055] Main body shell 1, first outer shell 11, air outlet shell 111, wind deflector shell 112, handle inner shell 12, first inner shell 121, first insertion part 1211, second inner shell 122, control part 123, second air guide surface 1231, third air guide surface 1232, fourth air guide surface 1233, air guide component 124, first air guide surface 1241, fifth air guide surface 1242, first slot 1243, thermistor 125, temperature controller 126, generator Heating component 2, heating wire assembly 21, annular inner shell 22, support member 221, annular outer shell 23, second mounting bracket 24, fixing groove 241, second support part 242, PCB board 3, capacitor 31, first mounting bracket 4, first through hole 41, first buckle member 42, first fixing structure 43, second buckle member 44, second fixing structure 45, first support part 46, air supply assembly 5, second outer shell 6, cover 61, inner filter frame 62. Detailed Implementation

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0057] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0058] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0059] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0060] Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0061] refer to Figures 1 to 2 The present invention provides a hair dryer, which includes a main body shell 1, the main body shell 1 including a first outer shell 11 and a handle inner shell 12. The first outer shell 11 has a first central axis and the two axial ends of the first outer shell 11 are an air outlet end and a windproof end, respectively, and the distance between the air outlet end and the windproof end is less than a preset distance. The handle inner shell 12 is connected to the axial middle part of the first outer shell 11 and has a second central axis. The first central axis and the second central axis form a preset angle.

[0062] In this embodiment, the axial distance between the two ends of the first outer shell 11 is less than a preset distance. At this time, the main shell of the hair dryer can meet the design requirements of small axial length and small size, and has an excellent user experience.

[0063] Specifically, the inner handle shell 12 and the first outer shell 11 have a connecting end face. This connecting end face has a first end and a second end along the first central axis. The first end is close to the air outlet end, and the second end is close to the wind deflector end. The distance between the air outlet end and the wind deflector end is less than a preset distance, which does not exceed twice the distance between the first end and the second end. Let L1 be the distance between the first end and the second end, L2 be the distance between the first end and the air outlet end, and L3 be the distance between the second end and the wind deflector end, where L1 + L2 + L3 ≤ 2 * L1. That is, L2 + L3 ≤ L1. The sum of the distances between the first end and the air outlet end and the distances between the second end and the wind deflector end is less than the distance between the first end and the second end. Preferably, the distance between the first end and the air outlet end does not exceed half the distance between the first end and the second end, i.e., L2 ≤ L1 * 1 / 2; the distance between the second end and the wind deflector end does not exceed half the distance between the first end and the second end, i.e., L3 ≤ L1 * 1 / 2. In this case, the main body shell of the hair dryer can meet the design requirements of small shaft length and small volume, providing an excellent user experience.

[0064] It is worth noting that in this embodiment, the preset angle between the first central axis and the second central axis is not further limited. As long as the distance between the air outlet and the windproof end is less than the preset distance, it is within the protection scope of this application.

[0065] Furthermore, both the inner shell of the handle and the first outer shell are annular, and the first central axis and the second central axis are at 90 degrees, that is, the first outer shell 11 and the inner shell of the handle 12 are relatively perpendicular, and at this time the inner shell of the handle 12 and the first outer shell 11 are connected. At this time, the distance between the first end and the second end is the diameter of the inner shell of the handle 12, and the diameter of the inner shell of the handle 12 does not exceed the axial length of the first outer shell 11. The distance from the connection point of the first outer shell 11 and the inner shell of the handle 12 to the air outlet does not exceed the radius of the inner shell of the handle 12; the distance from the connection point of the first outer shell 11 and the inner shell of the handle 12 to the windproof end does not exceed the radius of the inner shell of the handle 12, so that the axial length of the main shell 1 does not exceed twice the diameter of the inner shell of the handle 12. At this time, the main shell 1 of the hair dryer can meet the design requirements of small axial length and small size, and has an excellent user experience.

[0066] Specifically, the length of the inner handle shell 12 along the first central axis and near the windproof end to the windproof end of the main body shell 1 is the first length, which is less than or equal to the radius of the inner handle shell 12; the length of the inner handle shell 12 along the first central axis and near the air outlet end to the air outlet end of the main body shell 1 is the second length, which is also less than or equal to the radius of the inner handle shell 12; at this time, the sum of the first length and the second length is less than or equal to the diameter of the inner handle shell 12, thereby making the axial length of the main body shell 1 less than or equal to twice the diameter of the inner handle shell 12.

[0067] For more details, see the reference. Figure 5 The air outlet end is provided with an air outlet shell 111, and the air outlet shell 111 is provided with a heating element 2, a PCB board 3 and a first mounting bracket 4. The first mounting bracket 4 is disposed between the heating element 2 and the PCB board 3 and is fixedly connected to the heating element 2 and the PCB board 3. The heating element 2 is close to the air outlet end. The windproof end is provided with a windproof shell 112, and the windproof shell 112 is fixedly connected to the first mounting bracket 4. In this embodiment, the first mounting bracket 4 is fixedly connected to the heating element 2 and the PCB board 3. The heating element 2, the PCB board 3 and the first mounting bracket 4 are all integrated into the air outlet shell 111, and the air outlet shell 111 is then inserted into the air outlet end of the main body shell 1. The windproof end of the main body shell 1 is provided with a windproof shell 112, and the windproof shell 112 is fixedly connected to the first mounting bracket 4, so that the windproof shell 112 and the air outlet shell 111 are fixedly installed at both axial ends of the main body shell 1 and the heating element 2, the PCB board 3 and the first mounting bracket 4 are fixedly installed inside the main body shell 1.

[0068] It is worth noting that the air outlet shell 111 should be provided with a ventilation groove, which connects the air outlet shell 111 with the handle inner shell 12. The ventilation groove faces the windproof end and the bottom of the ventilation groove is flush with the end of the handle inner shell 12 near the air outlet, so that the cold air flow in the handle inner shell 12 can smoothly enter the air outlet shell 111.

[0069] Furthermore, the first length is slightly smaller than the second length, so that the distance from the connection between the first outer shell 11 and the inner shell of the handle 12 to the air outlet is greater than the distance from the connection between the first outer shell 11 and the inner shell of the handle 12 to the windproof end. This increases the time for the airflow to pass through the heating element 2, thus ensuring the heating effect of the heating element 2.

[0070] Further, refer to Figure 3 and Figure 4 The PCB board 3 is located on the side of the second central axis closer to the windshield; there are gaps between the first mounting bracket 4, the PCB board 3, and the heating component 2, and the end of the heating component 2 near the windshield is located on the side of the second central axis closer to the windshield.

[0071] In this embodiment, the end of the heating element 2 near the windshield is located on the side of the second central axis near the windshield, so that the hair dryer of the present invention can retain the axial length of the heating element 2 as much as possible, so that the heating element 2 can heat the airflow faster and better, thereby ensuring the hot air effect of the hair dryer.

[0072] Specifically, the PCB board 3 and the first mounting bracket 4 are positioned opposite each other on the side of the second central axis near the windshield end, so that the PCB board 3 and the first mounting bracket 4 are close to the windshield end of the main body shell 1. The second central axis divides the internal space of the handle inner shell 12 into an upper part and a lower part axially. The upper part is close to the windshield end, and the lower part is close to the air outlet end. That is, the PCB board 3 and the first mounting bracket 4 are located in the upper part, while the end of the heating component 2 near the windshield end is positioned opposite each other on the side of the second central axis near the windshield end. That is, the end of the heating component 2 near the windshield end is located in the upper part, and the other end of the heating component 2 reaches the air outlet end. At this time, the two ends of the heating component 2 are positioned opposite each other on both sides of the second central axis. The length of the heating component 2 is greater than half of the axial length of the first shell 11, making maximum use of the space inside the first shell 11, so that the heating component 2 can heat the airflow for a longer time and ensure the heating effect of the blower.

[0073] It is worth noting that the PCB board 3 is circular, and at least one flat square is provided on the outer edge of the PCB board 3 along its circumference. The flat square provides a large gap between the PCB board 3 and the inner wall of the air outlet shell 111, allowing the airflow from the inner shell 12 of the handle to the air outlet shell 111 to enter the rear side of the PCB board 3 through the flat square. This airflow then flows from the rear side of the PCB board 3 to the front side of the air outlet shell 111 and is blown out from the air outlet, improving the heat dissipation effect of the PCB board 3.

[0074] Further, refer to Figures 5 to 10The heating element 2 includes a heating wire assembly 21, an annular inner shell 22, an annular outer shell 23, and a second mounting bracket 24. The annular inner shell 22 is provided with a plurality of support members 221 around the first central axis. The heating wire assembly 21 is arranged around each support member 221 around the first central axis. The end of the heating wire assembly 21 near the windproof end is located on the second central axis. The annular outer shell 23 and the annular inner shell 22 are both arranged on the side of the second mounting bracket 24 near the air outlet end. The annular outer shell 23 is coaxially sleeved on the outside of the annular inner shell 22.

[0075] In this embodiment, one end of the annular inner shell 22 is located on the side of the second central axis closer to the windproof end, and the end of the heating wire assembly 21 closer to the windproof end is located on the second central axis. This ensures the axial length of the heating wire assembly 21, thus ensuring the airflow heating effect, while also reducing the contact time between the airflow and the heating wire assembly 21, thereby improving the airflow heating efficiency.

[0076] Specifically, the end of the heating wire assembly 21 near the windshield is located precisely in the center of the airflow within the inner shell 12 of the handle. The heating wire assembly 21 includes at least one heating wire, which is wavy and wound several times around the axis of the annular inner shell 22. The surface of each turn of the heating wire is perpendicular to the outer surface of the annular inner shell 22. A heating zone is formed between two adjacent support members 221, and part of the heating wire is placed in the heating zone. The starting ends of the heating wire are located relative to each other on the second central axis. Simultaneously, the wavy shape of the heating wire ensures that the surface of the heating wire within a wavelength range is approximately perpendicular to the axis of the annular inner shell 22. In other words, the surface of each turn of the heating wire is perpendicular to the outer surface of the annular inner shell 22, increasing the contact area between the airflow and the heating wire, thereby improving the efficiency of the heating wire in heating the airflow. Preferably, the heating wire assembly 21 includes two heating wires, which are connected in parallel and wound side-by-side around each support member 221, with a predetermined interval between the two heating wires. Using two parallel, spaced heating wires provides a longer length and a larger contact area with the airflow compared to a single heating wire, resulting in higher heating efficiency. The annular outer shell 23 and the annular inner shell 22 are coaxially arranged, positioning the heating wire assembly 21 between them. This better isolates the heat from the heating wire assembly 21, reducing the temperature on the first outer shell 11 and preventing burns or deformation due to high temperatures, thus improving the user experience. Preferably, the annular outer shell 23 is located on the inner ring surface of the air outlet shell 111 and maintains the same shape. When the annular inner shell 22 is placed inside the windshield shell 112, the annular outer shell 23 is coaxially aligned with it. The annular outer shell 23, the annular inner shell 22, and the support member 221 can be made of mica sheets, porous ceramics, ceramic-based heat-insulating materials, or high-temperature resistant heat-insulating cotton, or can be made by spraying a high-temperature resistant, heat-insulating coating onto a substrate. The first mounting bracket 4 fixes the heating element 2 and the PCB board 3, so that the heating element 2 and the PCB board 3 are integrated and installed in the air outlet shell 111. This not only strengthens the connection between the heating element 2 and the PCB board 3, but also reduces the axial length of the heating element 2 and the PCB board 3 after installation. At the same time, the annular outer shell 23 is set on the inner ring surface of the air outlet shell 111, which further improves the heat insulation effect of the heating element 2 and prevents the first outer shell 11 from burning the user or deforming due to high temperature. The layout is compact and the space utilization rate is high.

[0077] It is worth noting that each heating wire has several bent segments, which are connected end to end to form a closed, wavy, bent ring. Understandably, forming this wavy, bent ring increases the coverage of the heating wire within the first cavity, allowing cold air to heat up more quickly as it flows through the wire. This simple structural deformation improves heating efficiency and space utilization, making it highly practical. The support member 221 has several limiting teeth on its end face away from the annular inner shell 22, forming limiting grooves between adjacent teeth. Several heating wires are respectively positioned within their corresponding limiting grooves to prevent displacement. The limiting teeth form several limiting grooves to fix the heating wires in place. Under continuous output of hot or cold air, the heating wires on the annular inner shell 22 remain firmly within these grooves, preventing displacement due to wind force, thus making the overall structure more reliable and practical. In addition, the number and width of the limiting teeth should be adjusted according to the specific situation. For example, the number of teeth can be increased or decreased according to the different winding methods of the heating wire, or the width of the limiting teeth can be adjusted to achieve the adjustment of the width of the limiting groove.

[0078] Further, refer to Figure 11 and Figure 12 The inner shell 12 of the handle also has a control part 123 at one end near the first outer shell 11. The control part 123 is recessed towards the air outlet side along the radial direction of the inner shell 12 of the handle. The control part 123 has a second guide surface 1231 and a third guide surface 1232. The second guide surface 1231 is disposed at one end of the control part 123 near the first outer shell 11. The PCB board 3 is flush with the second guide surface 1231 at one end near the inner shell 12 of the handle. The third guide surface 1232 is disposed at one end of the control part 123 away from the first outer shell 11.

[0079] In this embodiment, the PCB board 3 is flush with the second guide surface 1231 near the end of the handle inner shell 12. The cold airflow inside the handle inner shell 12 can reach the surface of the PCB board 3 through the guide of the second guide surface 1231 and the third guide surface 1232 of the control unit 123, which is beneficial to the heat dissipation of the PCB board 3 and prevents the PCB board 3 from getting too hot, thus affecting the service life of the PCB board 3.

[0080] Specifically, the control unit 123 contains a control component for controlling the operation of the hair dryer. The control unit 123 is located at one end of the inner shell 12 of the handle near the windproof end, and the control unit 123 is formed by an inward indentation of the inner shell 12 of the handle. The control unit 123 specifically includes a second guide surface 1231, a third guide surface 1232, and a fourth guide surface 1233. The fourth guide surface 1233 is located between the second guide surface 1231 and the third guide surface 1232, and the fourth guide surface 1233 is along the second central axis. The second guide surface 1231 is close to the first outer shell 11 and extends outward, while the third guide surface 1232 is away from the first outer shell 11 and extends outward. The inclination angle of the second guide surface 1231 is greater than the inclination angle of the third guide surface 1232, so that the air can pass smoothly through the control unit 123, resulting in a large air volume and low noise. Meanwhile, the PCB board 3 and the second airflow guide surface 1231 are flush with the end near the inner shell 12 of the handle. The cold airflow reaching the first outer shell 11 will flow along the second central axis direction and pass over the lower surface of the PCB board 3. The lower surface of the PCB board 3 is located on the side of the PCB board 3 near the air outlet. This cold airflow is not heated by the heating element 2, which helps to reduce the temperature of the PCB board 3 and prevents the cold airflow from being heated by the heating element 2 and then passing over the PCB board 3, which would cause the PCB board 3 to overheat and be damaged. At the same time, the second airflow guide surface 1231 is tilted towards the windproof end, so that the cold airflow in the inner shell 12 of the handle has an inertia to flow towards the windproof end. At this time, the cold airflow can not only flow over the lower surface of the PCB board 3, but also some of the cold airflow reaches the side of the PCB board 3 near the windproof end. At this time, some of the cold airflow flows over the upper surface of the PCB board 3, which can better remove the heat from the two sides of the PCB board 3 and prevent the components on the PCB board 3 from overheating.

[0081] Further, refer to Figure 12 and Figure 13 The inner shell 12 of the handle is also provided with a guide 124 at one end near the first outer shell 11. The guide 124 is relatively close to the air outlet end. The guide 124 has a first guide surface 1241. The first guide surface 1241 and the second guide surface 1231 are guided to each other, so that the cold airflow of the inner shell 12 of the handle can flow to the PCB board 3 along the direction of the first guide surface 1241 of the guide 124. The first mounting bracket 4 is also provided with a plurality of first through holes 41, so that the airflow flowing through the PCB board 3 can flow to the air outlet end and through the heating component 2 along the first central axis direction through the first through holes 41.

[0082] In this embodiment, the inner shell 12 of the handle is also provided with a guide 124 near the first outer shell 11. The first guide surface 1241 and the second guide surface 1231 of the guide 124 are directed to each other, which can reduce the cross-sectional area of ​​the air duct at the ventilation slot, thereby increasing the wind speed of the cold airflow through the ventilation slot, increasing the fluidity of the cold airflow, and making it less prone to accumulation. This allows the cold airflow to flow to the front and rear sides of the PCB board 3, and the cold airflow gathers around the PCB board 3, further enhancing the heat dissipation effect of the PCB board 3.

[0083] Specifically, the control unit 123 and the air guide 124 are respectively disposed on both sides of the second central axis. The first air guide surface 1241 of the air guide 124 faces the windproof end. The first air guide surface 1241 gradually rises along the airflow direction, that is, the thickness of the air guide 124 gradually increases along the first central axis direction. The air guide 124 gets closer and closer to the control unit 123, and the cross-sectional area of ​​the air duct at the ventilation slot gradually decreases. The first air guide surface 1241 is close to the first outer shell 11 and covers part of the ventilation slot, so that a small part of the heating wire assembly 21 is located in the direction of the cold airflow, while most of the heating wire assembly 21 is blocked by the air guide 124. At this time, the cold airflow preferentially flows along the direction of the first air guide surface 1241 of the air guide 124 towards the windproof end and flows through the PCB board 3, and then flows along the first central axis direction through the heating assembly 2. Furthermore, the air guide 124 reduces the cross-sectional area of ​​the air duct at the ventilation slot, increasing the air pressure of the cold air at that location while maintaining the same air supply force of the air supply component 5. This improves the air velocity and flow of the cold air through the ventilation slot, resulting in more uniform airflow during heating and air outlet processes. In this embodiment, the three coils of heating wire in the heating wire assembly 21 are located on the side of the first air guide surface 1241 near the windproof end, while the others are blocked by the air guide 124. The first mounting bracket 4 is also provided with several first through holes 41 to form a hollow structure. The first through holes 41 are used for airflow between the heating component 2 and the PCB board 3, allowing the heat generated by the components on the PCB board 3 to be carried away by the airflow through the first through holes 41, preventing the components from overheating and affecting their normal operation. At the same time, the first through holes 41 also increase the airflow between the heating component 2 and the PCB board 3, increasing the airflow volume and flowability.

[0084] It is worth noting that the tilt angle of the first guide surface 1241 is between 0 and 45°, which ensures smooth airflow while minimizing noise. A fifth guide surface 1242 is also provided at the end of the guide component 124 furthest from the first outer shell 11. The slope of the fifth guide surface 1242 is greater than that of the first guide surface 1241. When the airflow passes through the fifth guide surface 1242, the angle at which its flow direction changes is greater than that of the first guide surface 1241, allowing the airflow to be better guided to the PCB board 3 inside the main shell 1, reducing noise and improving the user experience. The length of the fifth guide surface 1242 is shorter than that of the first guide surface 1241, improving the stability of the guiding effect. The tilt angle of the fifth guide surface 1242 is between 0 and 60°, resulting in good guiding effect. The guide component 124 is not limited to this; it can also be a guide block, guide strip, or guide tube, as long as it meets the requirements.

[0085] Furthermore, the inner shell 12 of the handle is provided with a first insertion part 1211, and the flow guide 124 is provided with a first slot 1243. During installation, the flow guide 124 is simply inserted upwards into the first insertion part 1211 through the first slot 1243, making installation and disassembly convenient and the structure simple. To ensure a secure connection between the inner shell 12 of the handle and the flow guide 124, screws can be tightened between them. It is worth noting that this application does not further limit the connection structure between the flow guide 124 and the inner shell 12 of the handle; as long as the flow guide 124 meets the flow guidance requirements, it is within the scope of protection of this application.

[0086] Further, refer to Figure 4 The support member 221 is symmetrical along the second central axis. The support member 221 near the inner shell 12 of the handle is arranged along the second central axis, so that the airflow passing through this support member 221 is diverted and flows symmetrically to both sides of the heating element.

[0087] In this embodiment, a support member 221 near the inner shell 12 of the handle is arranged along the second central axis, so that the airflow passing through this support member 221 is split and flows symmetrically to both sides of the heating component 2, making the airflow on both sides of the heating component 2 more uniform, thereby making the air outlet and heating effect more stable and reliable.

[0088] Specifically, several support members 221 are symmetrically distributed along the radial direction of the annular inner shell 22, and the enclosed area formed between the annular outer shell 23 and the annular inner shell 22 is evenly divided into several heating zones by the support members 221, which facilitates the flow of gas between the two and improves the heating efficiency. The number of support members 221 can be adjusted according to the size of the annular inner shell 22 or the required heating effect. In this embodiment, one support member 221 near the handle inner shell 12 is arranged along the second central axis. The cold airflow in the handle inner shell 12 is evenly divided into two airflows by this support member 221. These two airflows flow along the inner annular surface of the annular outer shell 23, so that the airflow on both sides of this support member 221 is approximately the same, the airflow on both sides of the heating component 2 is more uniform, and the hot airflow after heating by the heating component 2 is also more uniform and smooth, and the air outlet and heating effect are more stable and reliable. Preferably, there are twelve support members 221. These twelve support members 221 are evenly spaced around the annular inner shell 22, dividing the annular inner shell 22 into twelve equal parts, thus forming twelve heating zones. The spacing between each heating zone is consistent, which largely ensures the uniformity of airflow. In other embodiments, the number of support members 221 can be adjusted to increase or decrease the number of heating zones. It is worth noting that this application does not limit the specific number of support members 221; it includes, but is not limited to, twelve. As long as one support member 221 closest to the handle inner shell 12 is arranged along the second central axis and can achieve a uniform airflow distribution effect, it is acceptable. This is all within the scope of protection of this application.

[0089] Further, refer to Figure 7 and Figure 8 The annular inner shell 22 is fitted onto the side of the second mounting bracket 24 near the air outlet. The second mounting bracket 24 is also provided with a fixing groove 241 at the corresponding position of the support member 221, and the support member 221 is snapped into the fixing groove 241.

[0090] In this embodiment, the annular inner shell 22 is sleeved on the second mounting bracket 24, and the support member 221 is inserted into the fixing groove 241, so that the annular inner shell 22 and the support member 221 are firmly fixedly installed on the second mounting bracket 24, which facilitates the fixed connection between the heating component 2 and the first mounting bracket 4; at the same time, this fixing method can effectively reduce the axial length of the heating component 2.

[0091] Specifically, the fixing groove 241 is arranged around the axis of the second mounting bracket 24, and the position of the fixing groove 241 corresponds one-to-one with the position of the support member 221. The opening of the fixing groove 241 faces the air outlet. The annular inner shell 22 can be fitted into the outer ring surface of the second mounting bracket 24 along the first central axis. Because the annular inner shell 22 is fitted into the outer ring surface of the second mounting bracket 24, the annular inner shell 22 and the second mounting bracket 24 at least partially overlap, reducing the axial length of the heating component 2. At this time, the support member 221 is inserted into the fixing groove 241, which provides support for the support member 221 and also strengthens the connection between the annular inner shell 22 and the second mounting bracket 24, preventing the annular inner shell 22 and the second mounting bracket 24 from separating. Preferably, the annular inner shell 22 is further provided with a plurality of positioning grooves, and the positioning grooves are configured one-to-one with the support members 221; each support member 221 is provided with a positioning buckle that matches the corresponding positioning groove, and the positioning buckle can be engaged with the corresponding positioning groove, thereby fixing the support member 221 to the annular inner shell 22. The use of positioning grooves and positioning buckles can ensure the stability of the support member 221, and at the same time ensure the accurate positioning of the support member 221, which is conducive to the installation of the support member 221, and also prevents the support member 221 from shifting or sliding during the process of the operator installing the heating wire onto the support member 221.

[0092] Further, refer to Figure 9 and Figure 10 The first mounting bracket 4 has a first buckle 42 and a first fixing structure 43 at one end. The first buckle 42 buckles around the edges of the PCB board 3, and the first fixing structure 43 passes through the PCB board 3 and is fixedly connected to the windshield 112. The other end of the first mounting bracket 4 has a second buckle 44 and a second fixing structure 45. The second buckle 44 buckles the second mounting bracket 24, and the second fixing structure 45 is fixedly connected to the second mounting bracket 24.

[0093] In this embodiment, the first mounting bracket 4 is fixedly connected to the PCB board 3 via the first fastener 42, the first fixing structure 43, and the first mounting bracket 24 via the second fastener 44, the second fixing structure 45, and the second mounting bracket 24, so that the PCB board 3 and the heating element 2 are fixedly installed inside the air outlet shell 111, thereby strengthening the connection strength between the PCB board 3 and the heating element 2, preventing changes in the position of the PCB board 3 and the heating element 2, and also improving the installation efficiency of the PCB board 3 and the heating element 2.

[0094] Specifically, there are at least two first fasteners 42, which are disposed on the side of the mounting plate near the PCB board 3. The two first fasteners 42 are located on both sides of the outer edge of the first mounting bracket 4. The first fasteners 42 are adapted to fasten the PCB board 3, supporting and fixing the PCB board 3. By fastening the PCB board 3 with at least two first fasteners 42, the movement of the PCB board 3 away from the first mounting bracket 4 is restricted, preventing the outer edge of the PCB board 3 from vibrating significantly under the action of high-speed airflow, thereby avoiding cracks or even damage to the PCB board 3, and also preventing damage to the connection between the PCB board 3 and the heating component 2. In addition, fixing the PCB board 3 with the first fasteners 42 can improve the efficiency of installation and disassembly. The first fixing structure 43 includes at least two first mounting posts, which are distributed on the side of the first mounting bracket 4 near the PCB board 3. The PCB board 3 is provided with mounting holes suitable for the first mounting posts to pass through, and the first mounting posts pass through the mounting holes of the PCB board 3 to fix and connect to the windproof shell 112. By distributing the first mounting posts, relative rotation between the PCB board 3 and the first mounting bracket 4 can be avoided, thus preventing damage to the connection between the PCB board 3 and the heat-generating component 2. Furthermore, the multiple first mounting posts guide the installation of the PCB board 3, preventing installation errors and improving the installation efficiency of the PCB board 32. A second support portion 242 is also provided in the middle of the side of the second mounting bracket 24 near the windproof end. The second support portion 242 is used to limit the gap between the first mounting bracket 4 and the second mounting bracket 24, preventing the heat-generating component 2 from getting too close to the first mounting bracket 4 and damaging it. A first support portion 46 is also provided at the corresponding position of the first mounting bracket 4. Several third supports are provided along the circumference of the second mounting post connecting to the first mounting bracket 4. The third supports are used to support the PCB board 3. Both the first supports 46 and the third supports are used to control the gap between the first mounting bracket 4 and the PCB board 3, preventing the first mounting bracket 4 from getting too close to the PCB board 3, thus affecting heat dissipation, and preventing the first mounting bracket 4 from squeezing the components on the PCB board 3. The first support portion 46 has a first insertion hole, and the second support plate has a second insertion hole. The second mounting bracket 24 has a hook, and the first support portion 46 of the first mounting bracket 4 has a slot. The hook engages with the slot, causing the second fastener 44 to engage the second support portion 242 and the first support portion 46. The second fixing structure 45 includes several second mounting posts and countersunk holes. The second mounting posts are located on the side of the second mounting bracket 24 near the first mounting bracket 4. The first mounting bracket 4 has countersunk holes at corresponding positions on the second mounting posts. The second mounting posts and countersunk holes are fixedly connected by screws, thus fixing the second mounting bracket 24 and the first mounting bracket 4 together. The countersunk holes prevent the screws from protruding from the surface of the first mounting bracket 4, thus avoiding any impact on the components on the PCB board 3. The second mounting bracket 24 is positioned precisely at the gap between the second mounting bracket 24 and the first mounting bracket 4, without increasing the axial length of the heating element 2.

[0095] It is worth noting that the first mounting bracket 4 is also provided with several first through holes, each containing reinforcing ribs arranged radially to enhance the overall strength of the first mounting bracket 4. The reinforcing ribs include outer ribs and inner ribs. One end of the inner rib is connected to the outer edge of the first mounting bracket 4, and the other end extends away from the first mounting bracket 4. The inner ribs are arranged radially, and the outer ribs are sequentially connected to the ends of the inner ribs away from the first mounting bracket 4. By providing outer and inner ribs, with the inner ribs arranged radially, the smoothness of hot airflow through the first through holes 41 on the PCB board is improved, while ensuring the overall strength of the first mounting bracket 4. The first latching member 42 and the second latching member 44 include, but are not limited to, latching structures such as hooks and slots. The first fixing structure 43 and the second fixing structure 45 include, but are not limited to, fixing structures such as mounting posts and screws.

[0096] Further, refer to Figure 7 The annular inner shell 22 is also provided with a thermistor 125 and a temperature controller 126 at one end near the air outlet. The thermistor 125 and the temperature controller 126 are symmetrical about the first central axis and are located in the middle of the left and right sides of the outer ring surface of the annular inner shell 22.

[0097] In this embodiment, the thermistor 125 and the temperature controller 126 are symmetrical about each other along the first central axis, resulting in a more rational spatial layout. Simultaneously, the thermistor 125 and the temperature controller 126 are relatively far apart, enabling them to monitor the temperature of the hot air passing through the heating wire assembly 21 over a wider range. Furthermore, several support members 221 evenly divide the annular inner shell 22. The thermistor 125 and the temperature controller 126 are located at the midpoints of the left and right sides of the outer ring surface of the annular inner shell 22, precisely at the two points with the highest temperature inside the annular outer shell 23. This allows the thermistor 125 and the temperature controller 126 to monitor the temperature of the hot air passing through the heating wire assembly 21 in a timely and accurate manner.

[0098] Specifically, the annular inner shell 22 has a second groove on one end near the air outlet. A thermostat 126 is installed in this second groove and positioned relative to the outer ring surface of the annular inner shell 22. The thermostat 126 is separated from the heating wire assembly 21 and is positioned relatively close to the air outlet of the main shell 1, enabling it to sample and monitor the hot air after passing through the heating wire assembly 21. The annular inner shell 22 also has a first groove on one end near the air outlet. The connector of the thermistor 125 passes through the first groove and connects to the PCB board 3 from inside the annular inner shell 22, effectively protecting the connector. The first and second grooves are located opposite each other at the middle of the left and right sides of the outer ring surface of the annular inner shell 22, and are symmetrically arranged along the first central axis. A fuse is also provided on the inner ring surface of the annular inner shell 22, positioned along the first central axis. A third groove is also provided through the annular inner shell 22 at the corresponding position of the fuse. The third groove matches the fuse, and the fuse is positioned relative to the inner side of the annular inner shell 22. A fuse is also provided on the inner ring surface of the annular inner shell 22. The fuse will melt when overloaded, thereby preventing the heating wire assembly 21 from continuously reaching high temperatures and avoiding serious damage caused by the hair dryer. At the same time, there is a third groove on the annular inner shell 22 that matches the fuse, so that the fuse has a good working environment and will not melt prematurely or delay melting.

[0099] It is worth noting that in this embodiment, twelve support members 221 are evenly spaced around the annular inner shell 22 and divide the annular inner shell 22 into twelve equal parts. The support members 221 on the left and right sides of the outer ring surface of the annular inner shell 22 are parallel to each other. The thermistor 125 is located above the support member 221 and the temperature controller 126 is located below the support member 221; or the temperature controller 126 is located above the support member 221 and the thermistor 125 is located below the support member 221.

[0100] Further, refer to Figure 10 A capacitor 31 is also provided in the middle of one end of the PCB board 3 near the air outlet. The capacitor 31 passes through the first mounting bracket 4 and the second mounting bracket 24 to reach the inside of the annular inner shell 22, and the capacitor 31 does not extend beyond the annular inner shell 22.

[0101] In this embodiment, capacitor 31 is located in the middle of one end of PCB board 3 near the air outlet. Capacitor 31 passes through the first mounting bracket 4 and the second mounting bracket 24 to reach the inside of the annular inner shell 22, which can effectively avoid the problem of large capacity of capacitor 31 and reduce the axial length of the main shell 1. At the same time, capacitor 31 is located in the middle of the annular inner shell 22 and does not exceed the annular inner shell 22, which can effectively protect capacitor 31 from high temperature damage.

[0102] Specifically, capacitor 31 at least partially overlaps with heating element 2, thereby reducing the distance between PCB board 3 and heating element 2, and further reducing the space occupied by PCB board 3 and heating element 2 in the axial direction of main body shell 1, making main body shell 1 thinner to meet compact requirements and user needs. Capacitor 31 is located inside annular inner shell 22. Annular inner shell 22 can effectively reduce the heat transfer from heating wire assembly 21 to the inside of annular inner shell 22, preventing capacitor 31 from being in an overheated environment. At the same time, the overall structure is simple and easy to install. The second mounting bracket 24 also has a second support part 242 in the middle of the side near the windproof end. The second support plate has a second insertion hole. The first mounting bracket 4 also has a first support part 46 at the corresponding position. The first support part 46 has a first insertion hole. Capacitor 31 passes through the first insertion hole and the second insertion hole to reach the inside of annular inner shell 22. Meanwhile, the first support part 46 allows a gap between the first mounting bracket 4 and the PCB board 3; the second support part 242 allows a gap between the first mounting bracket 4 and the second mounting bracket 24, preventing the PCB board 3 from being too close to the heat-generating component 2, which could cause the PCB board 3 to overheat and be damaged, or even prevent the heat from dissipating from the components on the PCB board 3, leading to spontaneous combustion of the PCB board 3. Simultaneously, the capacitor 31 passes through the first and second sockets, and the second support part 242 and the first support part 46 abut against each other, with the first support part 46 abutting against the PCB board 3. The second support part 242 and the first support part 46 are fitted around the outside of the capacitor 31, effectively protecting the capacitor 31 and preventing it from receiving excess heat. During installation, the second support part 242 and the first support part 46 have a certain installation guide, facilitating the insertion of the capacitor 31 into the first mounting bracket 4 and the second mounting bracket 24.

[0103] Further, refer to Figure 2 and Figure 14 The handle inner shell 12 includes a first inner shell 121 and a second inner shell 122. The first inner shell 121 has an annular connecting part at one end near the first outer shell 11, and the annular connecting part fixes the middle part of the first outer shell 11. The second outer shell 6 is engaged with the first outer shell 11 along the first central axis direction, and the first outer shell 11 is near the air outlet end.

[0104] In this embodiment, the first inner shell 121 and the second inner shell 122 are snapped together to form the handle inner shell 12, which is simple and quick to assemble; the first inner shell 121 is provided with an annular connecting part that is fixedly connected to the first outer shell 11, which greatly enhances the connection strength between the handle inner shell 12 and the first outer shell 11.

[0105] Specifically, the first outer casing 11 is provided with a control part 123 on the side near the windproof end, and a first plug-in part 1211 is provided on the side of the annular connecting part near the air outlet end, and a guide member 124 is plugged into the first plug-in part 1211; the first outer casing 11 is also provided with an air supply assembly 5.

[0106] It is worth noting that the air supply component 5 includes, but is not limited to, fans, air pumps, etc., and this application does not further limit it.

[0107] Further, refer to Figure 1 and Figure 14 It also includes a second outer shell 6, which is sleeved on the inner shell 12 of the handle along the second central axis. The end of the second outer shell 6 away from the first outer shell 11 is also provided with a cover 61 and an inner filter frame 62. The inner filter frame 62 is snapped onto the first outer shell 11, and the cover 61 is detachably sleeved onto the inner filter frame 62 by a magnetic attraction structure.

[0108] In this embodiment, the second outer shell 6 is sleeved on the inner shell 12 of the handle along the second central axis, which can effectively prevent damage to the control components and air supply assembly 5 inside the inner shell 12 of the handle; at the same time, the end of the second outer shell 6 away from the first outer shell 11 is also provided with a cover 61 and an inner filter frame 62. The inner filter on the inner filter frame 62 can prevent foreign objects from entering the inner shell 12 of the handle. The cover 61 is detachably sleeved on the inner filter frame 62 through a magnetic structure, which is convenient for installation and removal, and makes it easy to remove the cover 61 for cleaning.

[0109] Specifically, the cover 61 has an air inlet, allowing external airflow to pass through the air inlet and the mesh of the inner filter to enter the inner handle housing 12. The inner filter frame 62 has a first through hole for the conduit to pass through, and the cover 61 has a second through hole for the conduit to pass through. The inner filter frame 62 includes an upper ring, a lower plate, and a middle rib connecting the upper ring and the lower plate. The upper ring is detachably connected to the lower end of the second outer housing 6 via a connecting structure. The lower plate has a first through hole, and the inner filter is connected to the middle rib and located between the upper ring and the lower plate. The cover 61 includes a cover wall and a cover top. The cover wall has an air inlet, and the cover top is detachably connected to the lower plate via a magnetic structure.

[0110] It is worth noting that both the inner filter screen and the inner filter screen holder 62 are cylindrical. The second outer casing 6 is provided with a sliding hole and a button hole for the control unit 123, which facilitates the control elements on the inner casing 12 of the handle from the second outer casing 6.

[0111] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A hair dryer, characterized in that, include: The main body shell includes a first outer shell and a handle inner shell. The outer wall of the first outer shell is provided with a connecting end face, and the handle inner shell is connected to the first outer shell through the connecting end face. The first housing has a first central axis, and the two ends of the first housing on the first central axis are an air outlet and a windproof end, respectively. The two ends of the connecting end face in the direction of the first central axis are the first end and the second end, respectively, and the distance between the air outlet end and the windproof end does not exceed twice the distance between the first end and the second end; The first outer shell contains a PCB board, and the inner shell of the handle has a second central axis perpendicular to the first central axis. The PCB board is located on the side of the second central axis closer to the windproof end. The inner shell of the handle also has a control part at one end near the first outer shell, and the control part is recessed towards the air outlet end along the radial direction of the inner shell of the handle. The control unit has a second flow guide surface and a third flow guide surface. The second flow guide surface is disposed at one end of the control unit near the first outer shell. The PCB board is flush with the end of the second flow guide surface near the inner shell of the handle. The third guide surface is disposed at the end of the control unit away from the first housing. The inner shell of the handle is also provided with a flow guide at one end near the first outer shell. The flow guide has a first flow guide surface, and the first flow guide surface and the second flow guide surface are directed to each other.

2. A hair dryer according to claim 1, characterized in that, The connecting end faces are located opposite each other at the middle position of the first outer shell on the first central axis. The first end is close to the air outlet end, and the second end is close to the windproof end. The distance between the first end and the air outlet end does not exceed the radius of the connecting end face, and the distance between the second end and the windproof end does not exceed the radius of the connecting end face.

3. A hair dryer according to claim 2, characterized in that, The air outlet end is provided with an air outlet shell, and the air outlet shell is provided with a heating element, a PCB board and a first mounting bracket. The first mounting bracket is disposed between the heating element and the PCB board, and the first mounting bracket is fixedly connected to the heating element and the PCB board. The heating element is close to the air outlet end. The windproof end is provided with a windproof shell, which is fixedly connected to the first mounting bracket.

4. A hair dryer according to claim 3, characterized in that, There are gaps between the first mounting bracket and the PCB board and the heating component, and one end of the heating component is located on the side of the second central axis closer to the windproof end.

5. A hair dryer according to claim 4, characterized in that, The air guide is relatively close to the air outlet, and the cold airflow in the inner shell of the handle can flow towards the PCB board along the first air guide surface of the air guide; The first mounting bracket is also provided with a plurality of first through holes, so that the airflow flowing through the PCB board can flow along the first central axis direction through the first through holes to the air outlet and flow through the heating component.

6. A hair dryer according to claim 3, characterized in that, The heating component includes a heating wire assembly, an annular inner shell, an annular outer shell, and a second mounting bracket. The annular inner shell is provided with a plurality of support members around the first central axis. The heating wire assembly is provided around each of the support members around the first central axis. The end of the heating wire assembly near the windproof end is located on the second central axis. Both the annular outer shell and the annular inner shell are disposed on the side of the second mounting bracket near the air outlet end, and the annular outer shell is coaxially sleeved on the outside of the annular inner shell.

7. A hair dryer according to claim 6, characterized in that, The support members are symmetrical along the second central axis, and one of the support members near the inner shell of the handle is arranged along the second central axis, so that the airflow passing through this support member is diverted and flows symmetrically to both sides of the heating component.

8. A hair dryer according to claim 6, characterized in that, The annular inner shell is fitted onto the side of the second mounting bracket near the air outlet end. The second mounting bracket is also provided with a fixing groove at the corresponding position of the support member, and the support member is snapped into the fixing groove.

9. A hair dryer according to claim 6, characterized in that, The first mounting bracket has a first buckle and a first fixing structure at one end. The first buckle buckles around the edges of the PCB board, and the first fixing structure passes through the PCB board and is fixedly connected to the windshield. The other end of the first mounting bracket is provided with a second fastener and a second fixing structure. The second fastener fastens the second mounting bracket, and the second fixing structure is fixedly connected to the second mounting bracket.

10. A hair dryer according to claim 6, characterized in that, The annular inner shell is also provided with a thermistor and a temperature controller at one end near the air outlet. The thermistor and the temperature controller are symmetrical about the first central axis and are located at the middle of the left and right sides of the outer ring surface of the annular inner shell.

11. A hair dryer according to claim 6, characterized in that, A capacitor is also provided in the middle of one end of the PCB board near the air outlet. The capacitor passes through the first mounting bracket and the second mounting bracket to reach the interior of the annular inner shell, and the capacitor does not extend beyond the annular inner shell.

12. A hair dryer according to claim 1, characterized in that, The handle inner shell includes a first inner shell and a second inner shell. The first inner shell has an annular connecting part at one end near the first outer shell, and the annular connecting part fixes the middle part of the first outer shell. The second inner shell is engaged with the first inner shell along the first central axis, and the first outer shell is close to the air outlet.

13. A hair dryer according to claim 12, characterized in that, The first inner shell has a control part on the side near the windproof end, and the annular connecting part has a first plug-in part on the side near the air outlet end, and a guide component is plugged into the first plug-in part; The first inner shell is also equipped with an air supply component.

14. A hair dryer according to claim 13, characterized in that, It also includes a second outer shell, which is fitted onto the inner shell of the handle along the second central axis. The second outer shell is further provided with a cover and an inner filter frame at the end away from the first outer shell. The inner filter frame is snapped into the first outer shell, and the cover is detachably sleeved onto the inner filter frame by a magnetic structure.

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