Hair dryer heat dissipation system

Abstract

This application provides a heat dissipation system for a hair dryer. [Solution] The heat dissipation system of the hair dryer includes a case, a cartridge, a blower assembly, and a handle. A first air intake is provided in the handle, and a second air intake and first, second, and third air outlets are provided in the cartridge. A first airflow is formed in the first air intake, and second and third airflows are formed in the second air intake. The first airflow flows inside the handle, between the case and the cartridge, and through the first air outlet; the second airflow flows between the blower assembly and the cartridge, and through the second air outlet; and the third airflow flows inside the blower assembly and through the third air outlet.

Description

Technical Field

[0001] The present invention relates to the field of dryers, and particularly to the heat dissipation system of a hair dryer.

Background Art

[0002] By using a high-performance motor, a high-speed hair dryer can generate a high-speed air flow and effectively shorten the time to dry hair. However, in the conventional high-speed hair dryer, the blower assembly is provided on the handle, the air outlet is in the cartridge, and the air flow needs to be bent at 90 degrees, which is likely to generate air loss.

[0003] To solve this problem, for the heat dissipation system of a conventional hair dryer, for example, in Chinese Patent CN117643411A, it is proposed to use an electric dryer design with a double air inlet, where the dryer assembly is provided in the cartridge, a first air inlet is provided on the cartridge case, and a second air inlet is provided on the handle assembly. Thus, the first air inlet and the air outlet intake the air linearly and blow it out linearly, improving the dryer effect.

[0004] However, the heat dissipation system of the above hair dryer is not compact in structure and the heat dissipation effect of the motor is insufficient, so the power of the heat dissipation system of the hair dryer will become low. Therefore, there is a need for a heat dissipation system of a hair dryer that can improve the power by improving the heat dissipation effect.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In view of this, in order to solve the above problems, it is necessary to provide a heat dissipation system of a hair dryer that can improve the power by improving the heat dissipation effect.

Means for Solving the Problems

[0006] The present invention relates to a heat dissipation system for a hair dryer, comprising a case, a cartridge fitted into the case, a blower assembly mounted inside the cartridge, and a handle connected perpendicularly to the case. The handle has a first air intake, the cartridge has a second air intake, and the heat dissipation system of the hair dryer has a first outlet, a second outlet, and a third outlet, which are provided along the axis of the cartridge and opposite to the second air intake, respectively. A first airflow is formed at the first air intake, and a second airflow and a third airflow are formed at the second air intake. The hair dryer heat dissipation system is characterized in that the first airflow flows sequentially through the handle, between the case and the cartridge, and through the first outlet; the second airflow flows sequentially between the blower assembly and the cartridge, and through the second outlet; and the third airflow flows sequentially through the blower assembly and the third outlet. [Effects of the Invention]

[0007] The beneficial effects of the heat dissipation system of the above hair dryer are as follows:

[0008] By providing a duct with two air intakes and three air outlets, a first, second, and third airflow is generated to dissipate heat from the hair dryer's heat dissipation system. Specifically, the first airflow dissipates heat from the handle housing, the circuit board inside the handle, and the case.

[0009] The second airflow dissipates heat from the outer surface layer of the blower assembly inside the cartridge, the mica plate. When the heat-generating filament wound around the mica plate is energized, the second airflow flows over the heat-generating filament, forming the second airflow hot air.

[0010] The third airflow dissipates heat from the inside of the blower assembly, particularly from the heat source of the blower assembly, such as the coils wound around the rotor.

[0011] Furthermore, in order to reduce the mounting space between the blower assembly and the heat-generating element, a portion of the rotor protrudes into the heat-generating element, and in order to avoid overheating of the rotor due to the heat generated by the heat-generating element, the third airflow flows over the heat-generating element and carries away the heat.

[0012] Furthermore, to reduce the effect of the mica plate's heat on the rotor, two insulation layers are provided, thereby reducing damage to the rotor caused by the heat generated by the mica plate and the heat-generating filament. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view of the heat dissipation system of the hair dryer described in this application. [Figure 2] This is a rear view of the heat dissipation system of the hair dryer described in this application. [Figure 3] This is a front view of the heat dissipation system of the hair dryer described in this application. [Figure 4] This is a magnified view of part A in Figure 2. [Figure 5] Figure 2 shows a cross-sectional view of BB and a schematic diagram of the gas flow direction of the first and third ducts. [Figure 6] Figure 2 shows a cross-sectional view of BB and a schematic diagram of the gas flow direction of the second duct. [Figure 7] Figure 2 shows a cross-sectional view of CC and a schematic diagram of the gas flow direction of the third duct. [Figure 8] This is a magnified view of section D in Figure 7. [Figure 9] This is an exploded view of the case, blower assembly, and intake member of the heat dissipation system of the hair dryer of the present application. [Figure 10] This is an exploded view of the case, cartridge, blower assembly, and intake member of the heat dissipation system of the hair dryer of this application. [Figure 11] This is a perspective front exploded view of the entire heat dissipation system of the hair dryer described in this application. [Figure 12]It is a perspective rear exploded view of the entire heat dissipation system of the hair dryer of the present application. [Figure 13] It is a cross-sectional view of FIG. 12. [Figure 14] It is a plan perspective view of the blower assembly of the present application. [Figure 15] It is a bottom perspective view of the blower assembly of the present application. [Figure 16] It is a schematic diagram of the internal structure of the second air guiding member of the present application. [Figure 17] It is a perspective view of the heating member of the present application.

Mode for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present application will be described with reference to the drawings. It is clear that the described embodiments are only some embodiments of the present application, not all embodiments.

[0015] It should be noted that when one assembly is considered to be "connected" to another assembly, it may be directly connected to another assembly, or an intermediate assembly may exist simultaneously. When one assembly is considered to be "provided" on another assembly, it may be directly provided on another assembly, or an intermediate assembly may exist simultaneously. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", and similar expressions used in this specification are for illustrative purposes only.

[0016] Hereinafter, based on the drawings, some embodiments of the present application will be described in detail. If there is no conflict, the following embodiments and the features of the embodiments may be combined.

[0017] Referring to Figures 1-17, an embodiment of the present application provides a hair dryer heat dissipation system 100 including a case 10, a cartridge 20 fitted into the case 10, a blower assembly 30 mounted inside the cartridge 20, and a handle 40 connected perpendicularly to the case 10. The handle 40 has a first air intake 41, the cartridge 20 has a second air intake 51, and the hair dryer heat dissipation system 100 has a first outlet 61, a second outlet 71, and a third outlet 83, respectively, located along the axis of the cartridge 20 and opposite the second air intake 51. A first airflow is formed at the first air intake 41, and a second and third airflow are formed at the second air intake 51. The first airflow flows sequentially through the handle 40, between the case 10 and the cartridge 20, and through the first outlet 61; the second airflow flows sequentially through the blower assembly 30 and the cartridge 20, and through the second outlet 71; and the third airflow flows sequentially through the blower assembly 30 and through the third outlet 83.

[0018] Specifically, the case 10 functions as an outer protective structure for the hair dryer's heat dissipation system 100. The cartridge 20 is fitted into the case 10 and, together with the case 10, forms the main body of the hair dryer's heat dissipation system 100. The first air intake 41 is opened in the handle 40, forming the first airflow. The second air intake 51 is opened in the cartridge 20, forming the second and third airflows.

[0019] The first airflow enters the first mounting chamber 42 inside the handle 40 from the first intake port 41, flows through the annular chamber 1020 between the case 10 and the cartridge 20, and is finally output from the first outlet port 61.

[0020] The handle 40 is fixed to the case 10 by vertical connection structures such as bolts and locking parts. The cartridge 20 is tightened to the case 10 by fitting and locking connections. The blower assembly 30 is fixed inside the cartridge 20 by mounting structures such as brackets.

[0021] When the hair dryer's heat dissipation system 100 is in operation, the first air intake 41 draws in outside air, which enters the first duct 60 and becomes the first airflow. The first airflow flows through the handle 40, dissipating heat from components such as the circuit board 43 inside the handle 40. The first airflow then flows through the annular chamber 1020 between the case 10 and the cartridge 20, dissipating heat from the case 10. Finally, the first airflow is output from the first outlet 61.

[0022] The second air intake port 51 draws in outside air, and a portion of the outside air enters the second duct 70 to become a second airflow. The second airflow flows through the second mounting chamber 21 between the blower assembly 30 and the cartridge 20, dissipating heat from the outer surface of the blower assembly 30, such as the blades, the first air guide member 34, the second air guide member 35, and the outer surface of the mica plate 361. When the heat-generating filament wound around the mica plate 361 is energized, the second airflow flows over the heat-generating filament, forming warm air. Finally, the second airflow is output from the second outlet 71. Finally, the second airflow is output from the second outlet 71, forming an airflow path that is drawn in linearly and blown out linearly.

[0023] The second air intake 51 draws in outside air, and another portion of the outside air enters the third duct 80 to become a third airflow. The third airflow enters the guide holes 342 of the first air guide member 34 through the gaps between the blades, flows directly inside the blower assembly 30, dissipates heat from heat sources in the internal structure of the blower assembly 30, such as the coils, and is output from the third outlet 83. The third airflow flows directly inside the blower assembly 30, dissipating heat from heat sources in the blower assembly 30, such as the coils wound around the rotor 32. After heat dissipation, the third airflow is output from the third outlet 83.

[0024] By providing two air intakes and three air outlets, multiple airflow paths are formed, improving the heat dissipation effect of the hair dryer's heat dissipation system 100. The first airflow dissipates heat from the housing of the handle 40, the circuit board 43 inside the handle 40, and the case 10, lowering the overall temperature. The second airflow dissipates heat from the outer surface of the blower assembly 30 inside the cartridge 20, and the mica plate 361, while simultaneously forming and outputting warm air. The third airflow dissipates heat from the inside of the blower assembly 30, particularly from the heat source, improving the stability and lifespan of the blower assembly 30.

[0025] In one specific embodiment, the heat dissipation system 100 of the hair dryer further includes a first duct 60. The first duct 60 includes a first intake port 41, a first mounting chamber 42, an annular chamber 1020, and a first outlet port 61. The first mounting chamber 42 is opened in the handle 40 and communicates with the first intake port 41, and the circuit board 43 is mounted in the first mounting chamber 42. The annular chamber 1020 is formed between the case 10 and the cartridge 20. The end of the first mounting chamber 42 away from the first intake port 41 communicates with the annular chamber 1020, and the annular chamber 1020 communicates with the first outlet port 61. The first outlet port 61 is formed by fitting the case 10 and the cartridge 20, and the second intake port 51 and the first outlet port 61 are located at opposite ends of the axis of the cartridge 20, respectively. The first airflow flows sequentially through the first intake port 41, the first mounting chamber 42, the circuit board 43, the annular chamber 1020, and the first outlet port 61. The first airflow flows, reducing the heat of the circuit board 43 and the case 10.

[0026] Specifically, the first air intake port 41 is located in the handle 40 and is an inlet for outside air. The first air intake port 41 is equipped with a filter mesh for filtering out dust, hair, and other debris. The first mounting chamber 42 is opened inside the handle 40, communicates directly with the first air intake port 41, and is used to mount the circuit board 43. The annular chamber 1020 is formed between the case 10 and the cartridge 20 as one of the main passages for the second airflow. The first outlet port 61 is formed in the gap between the case 10 and the cartridge 20 and is an outlet for the airflow.

[0027] The first intake port 41 is directly connected to the first mounting chamber 42, ensuring that the airflow enters the inside of the handle 40 smoothly. The first mounting chamber 42 and the annular chamber 1020 are connected to the handle 40 via a connecting structure between the case 10 and the cartridge 20, and the airflow flows out of the first mounting chamber 42 and then enters the annular chamber 1020. The annular chamber 1020 is formed around the cartridge 20, and its open end is connected to the first outlet 61, and the airflow flows through the annular chamber 1020 and then is discharged from the first outlet 61.

[0028] The circuit board 43 is mounted inside the first mounting chamber 42 and is directly exposed to the first airflow to facilitate heat dissipation. The second intake port 51 and the first outlet port 61 are located at both ends of the axis and contribute to the formation of airflow convection.

[0029] The airflow flows directly over the circuit board 43 via the first duct 60, effectively removing heat from the circuit board 43, and also dissipates heat from the case 10 as it flows through the annular chamber 1020.

[0030] In one specific embodiment, the hair dryer heat dissipation system 100 further includes a second duct 70. The second duct 70 includes a second intake port 51, a second mounting chamber 21, and a second outlet port 71. The hair dryer heat dissipation system 100 includes an intake member 50 fitted to one end of the case 10, the intake member 50 having a second intake port 51. The second outlet port 71 is opened in the cartridge 20 and is located at the end away from the second intake port 51. The second mounting chamber 21 is opened along the axial direction F1 of the cartridge, and the second intake port 51 and the second outlet port 71 communicate with each other at both ends of the second mounting chamber 21. The second airflow flows sequentially through the second intake port 51, the second mounting chamber 21, and the second outlet port 71, and dissipates heat from the blower assembly 30 as the second airflow flows through the second mounting chamber 21.

[0031] Specifically, the second air intake port 51 is opened in the air intake member 50, sleeve-connected to one end of the case 10, and serves as the inlet for the second and third airflows. The second air intake port 51 is provided with at least a two-layer filter mesh.

[0032] The second mounting chamber 21 is opened along the axial direction F1 of the cartridge and serves as the mounting space for the blower assembly 30 and the main passage for airflow.

[0033] Both ends of the second mounting chamber 21 are connected to the second intake port 51 and the second outlet port 71, respectively, forming a complete airflow passage.

[0034] The blower assembly 30 is mounted inside the second mounting chamber 21 and is directly exposed to the second airflow to facilitate heat dissipation. The second outlet 71 is located at the end away from the second intake port 51 and contributes to the formation of convection in the airflow.

[0035] External air enters the second intake port 51 from the intake member 50, and then enters the second mounting chamber 21. Inside the second mounting chamber 21, the second airflow comes into direct contact with the blower assembly 30, carrying away the heat from the blower assembly 30. The airflow is then discharged from the second outlet 71, forming a complete heat dissipation path.

[0036] In one specific embodiment, the blower assembly 30 is coaxial with the cartridge 20 and includes a rotating shaft 31, a rotor 32, blades 33, a first air guide member 34, and a second air guide member 35. The rotating shaft 31 is located on the axis of the cartridge 20, a coil is wound around the rotor 32, and the blades 33, the first air guide member 34, and the rotor 32 are fitted to the rotating shaft 31 adjacent to each other in order along the axial direction F1 of the cartridge, with the blades 33 located at the end closest to the second air intake 51. The second mounting chamber 21 is formed by connecting the second air guide member 35 and the cartridge 20. The second air guide blades 35133 are fitted to the first air guide member 34. The second air guide member 35 is connected to the first air guide member 34. The second air guide blades 35133 are located at the end away from the blades 33. The rotor 32 is located within the second air guide member 35. The blades 33 generate a second airflow, which is a rotating airflow. This second airflow flows through the first air guide member 34, reducing its heat and performing a first rectification. The second airflow then flows through the second air guide member 35, reducing its heat and performing a second rectification. After the second rectification, the second airflow becomes an airflow that is drawn in linearly and blown out linearly.

[0037] Specifically, the rotating shaft 31 is not only a common support structure for the blades 33, rotor 32, first air guide member 34, and second air guide member 35, but also the center of rotation for them. The blades 33, rotor 32, first air guide member 34, second air guide member 35, and mica plate 361 all rotate around the rotating shaft 31. The rotating shaft 31 is usually manufactured from a high-strength, highly wear-resistant material so that it can withstand the various forces and stresses during blower operation.

[0038] The rotor 32 is mounted around the rotating shaft 31 and is located between the blades 33 and the first air guide member 34. The rotor 32 is the power source for the blower assembly 30. When the coil is energized, the rotor 32 generates a magnetic field, which interacts with an external fixed magnetic field to generate a rotational force that rotates the rotating shaft 31. The rotor 32 is typically made of a magnetic material.

[0039] The blade 33 is located at the end closest to the second air intake 51 and is connected to the rotating shaft 31. As the rotating shaft 31 rotates, the blade 33 rotates with it, thereby generating a rotating airflow, or second airflow. This airflow is the main source of the air blown out by the hair dryer's heat dissipation system 100. The design of the blade 33 typically includes multiple blades.

[0040] The first air guide member 34 is located between the blades 33 and the rotor 32, directly behind the blades 33. The main roles of the first air guide member 34 are pre-rectification and heat dissipation. The first air guide member 34 can, to some extent, regulate the rotating airflow generated by the blades 33 and can also help dissipate the heat generated by the blower assembly 30 during operation. The first air guide member 34 typically has a streamlined design to reduce airflow resistance.

[0041] The second air guide member 35 is connected to the first air guide member 34 and is located at the end away from the blade 33. One end of the rotor 32 protrudes into the second air guide member 35, and the other end of the rotor 32 protrudes into the heat generating member 36. The main roles of the second air guide member 35 are further rectification and heat dissipation. The second air guide member 35 further optimizes and stabilizes the airflow adjusted by the first air guide member 34, creating a linearly drawn-in and linearly blown-out airflow that can continuously dissipate heat from the blower assembly 30. In addition, the linearly drawn-in and linearly blown-out second airflow reduces noise inside the cartridge.

[0042] The second air guide member 35 may include multiple passages, heat dissipation fins, and / or other heat dissipation structures to ensure optimal airflow rectification and heat dissipation effects.

[0043] The second mounting chamber 21 is formed by connecting the second air guide member 35 and the cartridge 20, and functions as the main passage for the second airflow. It ensures that the airflow passes through smoothly and that heat can be released.

[0044] In one specific embodiment, the blower assembly 30 further includes a first air guide member 34, a second air guide member 35, and a heating element 36 connected to the rotor 32, which are fitted into the cartridge 20. The heating element 36 includes a plurality of mica plates 361 surrounding the rotating shaft 31, each on which a heating filament is wound. The second airflow dissipates heat from the mica plates 361 as it flows over them. The second airflow forms warm air as it flows over the heating filaments.

[0045] Specifically, the heating element 36 functions as a heating element in the hair dryer's heat dissipation system 100, is fitted into the cartridge 20, and is connected to the first air guide member 34, the second air guide member 35, and the rotor 32. This ensures that the heating element 36 can be stably fixed inside the blower assembly 30 and facilitates heat transfer and dissipation.

[0046] Multiple mica plates 361 uniformly surround the rotating shaft 31. The heat-generating filament generates heat when energized, and the heat capacity ratio of the mica plates 361 > the heat capacity ratio of the heat-generating filament, so the mica plates 361 are used for insulation and prevent heat from being directly transferred to other assemblies.

[0047] A heat-generating filament is wound around each mica plate 361, and the heat-generating filament functions as a heat source. When power is applied to the heat-generating filament, it generates heat, and the second airflow, after flowing through the heat-generating filament, forms warm air.

[0048] As the second airflow flows through the blower assembly 30, heat is dissipated through the mica plate 361. The mica plate 361 has insulating properties and can effectively slow down the rate of heat release, so when the second airflow flows over the heat-generating filament, it can absorb sufficient heat and form warm air. In addition, the second airflow carries away some of the heat from the mica plate 361 and the heat-generating filament, thus playing a role in heat dissipation.

[0049] In one specific embodiment, the first air guide member 34 consists of a plurality of first air guide vanes 341 surrounding the rotating shaft 31, and the second air guide member 35 consists of a plurality of second air guide vanes 35133 surrounding the rotating shaft 31, connected to the tail ends of the first air guide vanes 341, and having the mica plate 361 connected to its tail end.

[0050] Let A be the number of the first air guide vanes 341, S be the number of the second air guide vanes 35133, and F be the number of the mica plates 361. A>S, The relationship S=F is satisfied, The mica plate 361 is connected to the tail end of the blade 33.

[0051] The first air guide vane 341 and the rotating shaft 31 form a first angle along the axial direction F1 of the cartridge, and the first angle is denoted as U; the second air guide vane 35133 and the rotating shaft 31 form a second angle along the axial direction F1 of the cartridge, and the second angle is denoted as Q; the mica plate 361 and the rotating shaft 31 form a third angle along the axial direction F1 of the cartridge, and the third angle is denoted as W; W=0°, W <Q<U、 U ≤ 60°, The relationship Q > 10° is satisfied.

[0052] Specifically, the first air guide member 34 consists of a plurality of first air guide blades 341, which surround the rotating shaft 31 and form a preliminary rectifying structure. The main role of the first air guide blades 341 is to draw in outside air from the blades 33, perform the first rectification on the generated rotating second airflow, and smooth out turbulence.

[0053] The second air guiding member 35 consists of a plurality of second air guiding vanes 35133. The second air guiding vanes 35133 surround the rotation axis 31 and are connected to the tail ends of the first air guiding vanes 341, and are used to receive the second air flow that has undergone the first rectification. The second air guiding vanes 35133 perform the second rectification on the second air flow to ensure that the second air flow that has undergone the second rectification becomes a direct current.

[0054] The second air flow flows along the gap between adjacent first air guiding vanes 341, and the first rectification is performed by the inclination curvature of the first air guiding vanes 341. The first rectification is performed based on the inclination curvature of the first air guiding vanes 341. The inclination curvature of the first air guiding vanes 341 is determined by the angle between the first air guiding vanes 341 and the rotation axis 31. This angle is the first angle, and let the first angle be U.

[0055] The second air flow flows along the gap between adjacent second air guiding vanes 35133, and the second rectification is performed by the inclination curvature of the second air guiding vanes 35133. The second rectification is performed based on the inclination curvature of the second air guiding vanes 35133. The inclination curvature of the second air guiding vanes 35133 is determined by the angle between the second air guiding vanes 35133 and the rotation axis 31. This angle is the second angle, and let the second angle be Q.

[0056] Each mica plate 361 is connected to and adhered to the tail end of one second air guiding vane 35133. The gap between adjacent mica plates 361 is connected to the gap between adjacent second air guiding vanes 35133, and is used to directly receive the second air flow that has undergone the second rectification, reduce the loss of the second air flow that has undergone two rectifications, allow the second air flow to directly act on the mica plate 361, dissipate heat from the mica plate 361, or flow through the heating filament during energization to form warm air.

[0057] W < Q < U indicates that as the second air flow is gradually rectified by the first air guiding member 34, the second air guiding member 35, and the mica plate 361, the rotating and turbulent second air flow gradually changes into a second air flow that is blown out linearly.

[0058] The first angle is larger than the second angle, thereby contributing to capturing and pre-rectifying the rotating airflow generated from the blade 33. The presence of angle U allows the first guide vane 341 to guide the airflow so that it flows along its inclined curved surface, thereby reducing the rotational component of the airflow and increasing its axial component.

[0059] The angle Q between the second guide vane 35133 and the rotation axis 31 is small, which further promotes the rectification process of the airflow. Compared to the first guide vane 341, the second guide vane 35133 fine-tunes the airflow at a smaller angle, bringing it closer to a direct current state. The gap between adjacent second guide vanes 35133 allows the airflow to flow out stably, reducing turbulence and vortex formation.

[0060] Each mica plate 361 is connected to the tail end of a second guide vane 35133, thereby ensuring that the airflow, having undergone a second rectification, can act directly on the mica plate 361. As the airflow flows over the mica plate 361, it not only removes its heat but is also rectified into a second, linearly blown airflow.

[0061] A heat-generating filament is wound around the mica plate 361, and when power is applied, the airflow absorbs heat as it flows, forming warm air and simultaneously maintaining a stable output of the airflow.

[0062] The first air guide vane 341 and the second air guide vane 35133 work together to transform a curved duct into a straight duct, ensuring that the airflow remains in a direct current state as it flows through the entire blower assembly 30. The tight connection between the mica plate 361 and the second air guide vane 35133 ensures that heat can be efficiently transferred to the airflow, and the thermal insulation performance of the mica plate 361 prevents excessive heating of other parts of the blower assembly 30.

[0063] This experiment verifies the effect of guide vanes at different angles on airflow rectification. The experimental principle, based on the fundamental principles of airflow rectification, aims to reduce turbulence and resistance by guiding and adjusting the gas flow, thereby improving the stability of the gas within the passage. The experiment uses two guide vanes at different angles, namely the first and second guide vanes, representing different rectification stages. The rectification effect can be evaluated by measuring the airflow velocity after rectification.

[0064] Experimental materials: fan Two different angled guide vanes for the first and second stages of rectification, anemometer Angle meter.

[0065] Experimental steps: Place the fan at one end of the test bench and secure it in place.

[0066] The first air guide blade is fixed to the fan outlet at an angle U to ensure that the airflow passes through smoothly.

[0067] To ensure that the airflow can be rectified twice, a second wind guide vane is fixed at an angle Q behind the first wind guide vane, at a certain distance from the first wind guide vane.

[0068] An anemometer is installed behind the second wind guide vane to measure the airflow velocity after rectification.

[0069] Open the fan, straighten the airflow with the air guide plate, and record the anemometer reading.

[0070] Repeat the experiment, changing the angles of U and Q, and observe and record the airflow velocity when the air is rectified at different angles.

[0071] Experimental data TIFF2026114904000002.tif83128

[0072] Experimental results and analysis As can be seen from the experimental data, when both the first guide vane angle U and the second guide vane angle Q are appropriate, the rectified airflow velocity is stable and high when U=45° and Q=20°.

[0073] If U is greater than 60° or Q = 10°, the rectifying effect may be affected, potentially leading to a reduction or instability in airflow velocity.

[0074] In one specific embodiment, the heating element 36 further includes a first insulating layer 362 and a second insulating layer 363 sleeve-connected to the first insulating layer 362, the mica plate 361 is connected to the first insulating layer 362, and the rotor 32 protrudes into the heating element 36.

[0075] Specifically, the first insulation layer 362 and the second insulation layer 363 prevent overheating of the rotor 32 in the heat dissipation chamber 82 within the heat generating element 36 and block heat. The third airflow removes heat from the heat dissipation chamber 82, thereby preventing the rotor 32 from burning out due to excessively high temperatures in the heat dissipation chamber 82.

[0076] A gap is formed between the first insulation layer 362 and the second insulation layer 363, increasing the heat transfer area.

[0077] During operation of the hair dryer's heat dissipation system 100, the airflow enters through the intake port, passes through a series of passages such as the inside of the handle 40 and the annular chamber 1020, and then enters the area of ​​the heat-generating element 36. In the area of ​​the heat-generating element 36, the airflow comes into contact with the mica plate 361 and the first and second insulating layers 363, carrying away the heat they transfer. Because the intake volume is smaller than the discharge volume, the airflow forms a "stagnant" effect inside the hair dryer's heat dissipation system 100, allowing it to come into more sufficient contact with each component, thereby more effectively removing heat.

[0078] In one specific embodiment, the blower assembly 30 includes a third duct 80. The third duct 80 includes a second intake port, a second mounting chamber 21, flow guide holes 342, a placement chamber 81, a heat dissipation chamber 82, and a third outlet port 83. The first air guide member 34 has a plurality of the flow guide holes 342 that are provided along the axial direction of the cartridge 20, surround the rotating shaft 31, and communicate with the second mounting chamber 21. The placement chamber 81 is a gap in the coil wound around the rotor 32, communicates with the flow guide holes 342, and is located at an end away from the second intake port. The heat dissipation chamber 82 is formed by connecting the rotor 32 and the second insulation layer 363, communicates with the placement chamber 81, and the rotor 32 and connecting shaft protrude into it. The heat dissipation system 100 of the hair dryer includes an outlet member that covers the inside of the cartridge 20, and the third outlet 83 is located between the intake member and the cartridge 20.

[0079] Specifically, the third duct 80, which is an important component of the airflow path, is embedded within the blower assembly 30.

[0080] The third duct 80 includes a second intake port, a second mounting chamber 21, a guide hole 342, a placement chamber 81, a heat dissipation chamber 82, and a third outlet port 83, which constitute a flow path for the airflow within the blower assembly 30.

[0081] The first air guide member 34 has air guide holes 342 that are provided along the axial direction of the cartridge 20, and the multiple air guide holes 342 are arranged around the rotating shaft 31 to ensure that the airflow can be distributed uniformly.

[0082] The guide hole 342 connects the second mounting chamber 21 to a subsequent airflow path, such as the placement chamber 81.

[0083] The placement chamber 81 is a gap in the coil wound around the rotor 32, located at the end away from the second air intake. This gap not only provides mounting space for the coil, but also functions as part of an airflow passage, allowing airflow to pass through and carry away the heat from the coil. The heat dissipation chamber 82 is formed by connecting the rotor 32 and the second insulation layer 363 and is in communication with the mounting chamber 81. The heat dissipation chamber 82 further reduces the heat of the mica plate 361 and the heat-generating filament, thereby preventing heat from the second mounting chamber 21 from entering the heat dissipation chamber 82 through the first insulation layer 362 and the second insulation layer 363. The rotor 32 and the connecting shaft protrude into the heat dissipation chamber 82, thereby contributing to the transfer of heat from the inside to the outside airflow.

[0084] The hair dryer's heat dissipation system 100 further includes an intake member and an outlet member located between the cartridge 20 and the cartridge 20, covering the inside of the cartridge 20. A third outlet 83 is located on the outlet member and is the final step in which the airflow leaves the hair dryer's heat dissipation system 100.

[0085] The above describes only embodiments of this application, and improvements can be made here without departing from the concept of this application by those skilled in the art, but it should be noted that these improvements fall within the scope of protection of this application. [Explanation of symbols]

[0086] 100. Hair dryer heat dissipation system 10. Case 1020, annular chamber 20. Cartridge 21. Second mounting chamber 30. Blower assembly 31. Rotation axis 32. Rotor 33. Blade 34. First air guide member 341, First wind guide blade 342, flow guide hole 35. Second air guide member 351, Second wind guide vane 36. Heat-generating element 361, mica plate 362, First insulation layer 363, Second insulation layer 40, Handle 41. First air intake 42. First mounting chamber 43. Circuit board 50. Intake member 51. Second air intake 60. First duct 61, 1st outlet 70. Second duct 71, 2nd outlet 80, Third duct 81. Placement Chamber 82. Heat dissipation chamber 83, 3rd outlet 90, Exhaust components F1, cartridge axis

Claims

1. A heat dissipation system for a hair dryer, comprising a case, a cartridge fitted into the case, a blower assembly mounted inside the cartridge, and a handle connected perpendicularly to the case, The handle has a first air intake, the cartridge has a second air intake, and the heat dissipation system of the hair dryer has a first outlet, a second outlet, and a third outlet, which are provided along the axis of the cartridge and opposite to the second air intake, respectively. A first airflow is formed at the first air intake, and a second airflow and a third airflow are formed at the second air intake. A heat dissipation system for a hair dryer, characterized in that the first airflow flows sequentially through the handle, between the case and the cartridge, and through the first outlet; the second airflow flows sequentially between the blower assembly and the cartridge, and through the second outlet; and the third airflow flows sequentially through the blower assembly and the third outlet.

2. The heat dissipation system of the aforementioned hair dryer is The first duct further includes the first intake port, the first mounting chamber, the annular chamber, and the first outlet port. The first mounting chamber is opened within the handle and communicates with the first air intake, and the circuit board is mounted within the first mounting chamber. The annular chamber is formed between the case and the cartridge, the end of the first mounting chamber away from the first air intake is in communication with the annular chamber, and the annular chamber is in communication with the first air outlet. The first air outlet is formed by fitting the case and the cartridge together, and the second air intake and the first air outlet are located at both ends of the axis of the cartridge, The heat dissipation system for a hair dryer according to claim 1, characterized in that the first airflow flows sequentially through the first air intake, the first mounting chamber, the circuit board, the annular chamber, and the first outlet, and the first airflow flows to reduce the heat of the circuit board and the case.

3. The heat dissipation system of the aforementioned hair dryer is It further includes a second intake port, a second mounting chamber, and a second duct including a second outlet, The heat dissipation system of the hair dryer includes an intake member fitted to one end of the case, the intake member having a second intake port, and the second outlet having an opening in the cartridge, the second outlet being located at the end away from the second intake port. The second mounting chamber is opened along the axial direction of the cartridge, and the second intake port and the second outlet port are connected to both ends of the second mounting chamber, The hair dryer heat dissipation system according to claim 2, characterized in that the second airflow flows sequentially through the second air intake, the second mounting chamber, and the second outlet, and as the second airflow flows through the second mounting chamber, it reduces the heat of the blower assembly installed in the second mounting chamber.

4. The blower assembly is mounted coaxially with the cartridge and located within the second mounting chamber, and includes a rotating shaft, a rotor, blades, a first air guide member and a second air guide member. The rotating shaft is located at the axis of the cartridge, a coil is wound around the rotor, the blade, the first air guide member and the rotor are fitted to the rotating shaft adjacent to each other in order along the axial direction of the cartridge, and the blade is located at the end closest to the second air intake. The second mounting chamber is formed by connecting the second air guide member and the cartridge, The second air guide vane is fitted into the first air guide member, the second air guide member is connected to the first air guide member, the second air guide vane is located at the end away from the blade, and the rotor is located inside the second air guide member. The blade generates a second airflow, which is a rotating airflow. This second airflow flows through the first air guide member, reducing the heat of the first air guide member and performing the first rectification. The heat dissipation system for a hair dryer according to claim 1, characterized in that the second airflow flows through the second air guide member, reduces the heat of the second air guide member, and performs a second rectification, and after the second rectification, the second airflow becomes an airflow that is drawn in in a straight line and blown out in a straight line.

5. The blower assembly is The cartridge further includes the first air guide member, the second air guide member, and a heating element connected to the rotor, respectively, which are fitted into the cartridge. The aforementioned heating element is The rotating shaft is surrounded by a plurality of mica plates, each on which a heat-generating filament is wound, When the second airflow flows over the mica plate, it dissipates heat from the mica plate. The heat dissipation system for a hair dryer according to claim 4, characterized in that when the second airflow flows through the heating filament, it forms a hot airflow.

6. The first air guide member is It consists of a plurality of first guide vanes surrounding the aforementioned rotating shaft, The second air guide member is, The heat dissipation system for a hair dryer according to claim 3, characterized in that it comprises a plurality of second air guide blades, each connected to the tail end of the first air guide blade and surrounding the rotating shaft, the mica plate being connected to and in close contact with the tail end of the second air guide blade.

7. Let A be the number of the first wind guide blades, S be the number of the second wind guide blades, and F be the number of mica plates. A > S, The relationship S = F is satisfied, The heat dissipation system for a hair dryer according to claim 6, characterized in that the mica plate is connected to the tail end of the air guide blade.

8. The first air guide vane and the rotating shaft form a first angle along the axial direction of the cartridge, and the first angle is denoted as U; the second air guide vane and the rotating shaft form a second angle along the axial direction of the cartridge, and the second angle is denoted as Q; the mica plate and the rotating shaft form a third angle along the axial direction of the cartridge, and the third angle is denoted as W; W = 0°, W < Q < U, U ≤ 60°, The heat dissipation system for a hair dryer according to claim 7, characterized in that it satisfies the relationship Q > 10°.

9. The heat dissipation system for a hair dryer according to claim 5, wherein the heat generating member further includes a first insulating layer and a second insulating layer sleeve-connected to the first insulating layer, the mica plate is connected to the first insulating layer, and the rotor protrudes into the heat generating member.

10. The blower assembly is It includes a third duct comprising a second intake port, a second mounting chamber, a guide hole, a placement chamber, a heat dissipation chamber, and a third outlet, The first air guide member is: A plurality of the flow guide holes are provided along the axial direction of the cartridge, surrounding the rotating shaft, and communicating with the second mounting chamber. The arrangement chamber is a gap in the coil wound around the rotor, is in communication with the flow guide hole, and is located at an end away from the second intake port. The heat dissipation chamber is formed by connecting the rotor and the second heat insulating layer, is in communication with the mounting chamber, and the rotor and connecting shaft protrude into its interior. The heat dissipation system for the hair dryer according to claim 9, wherein the heat dissipation system for the hair dryer includes a blowing member that covers the inside of the cartridge, and the third blowing outlet is located between the intake member and the cartridge.

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