Hair removal instrument

Abstract

The invention relates to a hair removal instrument which comprises a shell, a light-emitting assembly and a heat dissipation assembly, the light-emitting assembly and the heat dissipation assembly are arranged in the shell, the shell is provided with an air inlet and an air outlet, a first air channel is arranged in the shell and communicated with the air inlet and the air outlet, and the heat dissipation assembly is arranged in the first air channel. The first air duct is arranged along the axis of the hair removal instrument; an axial flow fan set located in the first air channel is further arranged in the shell and comprises a first fan and a second fan, the first fan and the second fan are arranged in parallel and coaxially at intervals, and an air compression space is formed by the interval between the first fan and the second fan. Air sucked into the first air channel from the air inlet flows through the first fan, is compressed by the air compression space, then flows into the second fan and is accelerated by the second fan, and the accelerated air dissipates heat of the heat dissipation assembly and then is exhausted from the air outlet.

Description

[0001] This application is a divisional application of application number 202211495428.9, filed on November 27, 2022, entitled "Hair Removal Device and Air Duct Mechanism Thereof". Technical Field

[0002] This application relates to the field of hair removal technology, and in particular to a hair removal device and its air duct mechanism. Background Technology

[0003] With the improvement of living standards, more and more people are paying attention to beauty and skincare. Laser hair removal devices, as a beauty product that can remove skin hair, have become increasingly popular among women. These devices utilize advanced light-based hair removal technology to effectively prevent hair regrowth on various parts of the body, achieving permanent hair removal. Light-based hair removal is based on the principle of selective photothermolysis, utilizing the "selective photothermal effect" of light. Light tuned to a specific wavelength penetrates the epidermis and directly irradiates the hair follicle. The melanin in the hair follicle and hair shaft selectively absorbs the light energy, and the resulting thermal effect causes the hair follicle to die, preventing hair regrowth. During the use of a laser hair removal device, the user places the light-emitting end of the device against the skin and then activates the device to remove the hair. As a safe, fast, and long-lasting hair removal technology, laser hair removal is increasingly favored by consumers.

[0004] Hair removal devices typically include a heat dissipation mechanism and air ducts for blowing air for heat dissipation. However, traditional heat dissipation mechanisms have complex structures, resulting in high manufacturing costs. Furthermore, the airflow speed and force in traditional heat dissipation mechanisms are very limited, leading to poor heat dissipation and low heat dissipation efficiency, which seriously affects the hair removal effect and user comfort.

[0005] Therefore, it is necessary to provide a heat dissipation duct mechanism with good heat dissipation effect, as well as a hair removal device with good hair removal effect and high user comfort. Summary of the Invention

[0006] The purpose of this application is to provide an air duct structure with good heat dissipation, as well as a hair removal device with good hair removal effect and high user comfort.

[0007] To achieve the purpose of this application, the following technical solution is provided: A hair removal device includes a housing and a light-emitting component and a heat-dissipating component disposed inside the housing. The housing has an air inlet and an air outlet, and a first air duct is disposed inside the housing, communicating with the air inlet and the air outlet. The heat-dissipating component is disposed in the first air duct, which is arranged along the axis of the hair removal device. External air is drawn into the first air duct from the air inlet, flows along the axial direction to the air outlet, and flows out of the hair removal device. An axial flow fan unit is also disposed inside the housing and located in the first air duct. The axial flow fan unit includes a first fan and a second fan, which are arranged parallel, coaxially, and spaced apart. The space between the first fan and the second fan forms an air compression space. Air drawn into the first air duct flows through the first fan, is compressed by the air compression space, flows into the second fan, and is accelerated by the second fan. The accelerated air dissipates heat from the heat-dissipating component and is discharged from the air outlet.

[0008] Preferably, the first fan and the second fan are configured to rotate in opposite directions when operating.

[0009] Specifically, the first fan includes a first blade group, and the second fan includes a second blade group; the axial flow fan unit includes a fan group housing and the first blade group and the second blade group disposed within the fan group housing; the fan group housing is adaptedly fitted into the hair removal device housing.

[0010] Furthermore, the first blade group is arranged in the opposite direction to the second blade group.

[0011] In some embodiments, the hair removal device housing is cylindrical, the fan assembly housing is cylindrical, and the cylindrical fan assembly housing is adapted to be attached to the inner wall of the cylindrical hair removal device housing to form a coaxial nested structure, so that as much of the air drawn in from the air inlet as possible flows into the axial flow fan unit; the first fan is arranged close to the air inlet.

[0012] In some embodiments, the first fan forms a first air inlet surface and a first air outlet surface at both ends along the axial direction, and the second fan forms a second air inlet surface and a second air outlet surface at both ends along the axial direction. The first air inlet surface faces the air inlet and is located behind the air inlet, and the second air inlet surface faces the first air outlet surface and the air compression space is formed between the two.

[0013] In some embodiments, the axial flow fan unit is an integral structure, and the fan assembly housing is an integral housing, including a first fan housing, an air compression space housing, and a second fan housing portion. The first blade assembly is installed inside the first fan housing, and the second blade assembly is installed inside the second fan housing.

[0014] In some embodiments, the hair removal device is further provided with a second air duct, which is connected to the first air duct, and the air inlet and outlet of the second air duct are arranged in the same direction as the air inlet and outlet of the first air duct, and the light-emitting component is placed in the second air duct.

[0015] Specifically, the first fan includes a first blade group, and the second fan includes a second blade group. In some embodiments, the first blade group includes at least three blades, and the second blade group has more blades than the first blade group. In some embodiments, the number of blades in the first and second blade groups can be odd or even. More specifically, in some embodiments, the first blade group includes three blades, and the second blade group includes five or seven blades; in some embodiments, the first blade group includes five blades, and the second blade group includes seven blades; in other embodiments, the number of blades in the first and second blade groups can also be four, six, or eight. The aforementioned examples of the number of blades are only some embodiments and do not constitute a limiting feature of the technical solution of this application.

[0016] In some embodiments, the blades of the first blade group and the blades of the second blade group are staggered. This staggered arrangement of the blades of the first fan and the second fan allows air to be drawn in and blown out by the first fan. Upon reaching the second fan, the staggered blades of the second fan compress the airflow to a certain extent, effectively compressing the air in the space between the first and second fans. Furthermore, the airflow is further dispersed and split by the blades of the second fan, enhancing the explosive force of the compressed air, which is beneficial for uniform airflow and increased wind speed.

[0017] In some implementations, the first blade group is oriented in the opposite direction to the second blade group. This allows both fans to generate a large airflow simultaneously when they rotate in opposite directions, amplifying the combined airflow from both fan groups.

[0018] In some embodiments, the first fan includes a first air inlet surface and a first air outlet surface, and the second fan includes a second air inlet surface and a second air outlet surface. The first air outlet surface and the second air inlet surface are adjacent to each other and maintain a gap distance to form an air compression space.

[0019] In some embodiments, the second fan is further provided with an air guide plate assembly at the second air outlet surface, the air guide plate assembly including at least three air guide plates evenly distributed along the axis in an arc shape.

[0020] In some implementations, the first fan and the second fan are two separate fan units, or the first fan and the second fan are an integrated structure.

[0021] This application also provides a hair removal device, which includes a light-emitting component and a heat dissipation component, as well as the air duct mechanism described above. The first air duct of the air duct mechanism includes an air inlet and an air outlet. The heat dissipation component is disposed in the first air duct, and the axial flow fan unit is disposed between the air inlet and the air outlet. The arrangement of the first fan and the second fan of the axial flow fan unit allows the air entering the air inlet from the first air duct to be compressed through the space between the first fan and the second fan, and then explosively released from the second fan, accelerating the airflow speed. The airflow is dispersed and released, resulting in a larger air volume and higher air speed. Therefore, the heat dissipation effect of the heat dissipation component in the air duct mechanism is greatly improved. The hair removal device of this application has good heat dissipation effect, high user comfort, and good hair removal effect.

[0022] In some embodiments, the axial flow fan unit is located near the air inlet of the first air duct, and the first fan is positioned between the air inlet of the first air duct and the second fan. In other embodiments, the axial flow fan unit may also be located near the air outlet of the first air duct.

[0023] In some embodiments, the hair removal device further includes a second air duct, which communicates with the first air duct, and the air inlet and outlet of the second air duct are oriented in the same direction as the air inlet and outlet of the first air duct. The light-emitting component is placed in the second air duct. Specifically, the air inlet of the second air duct is located closer to the air inlet of the first air duct, and the air outlet of the second air duct is located closer to the air outlet of the first air duct. In some embodiments, the second air duct is shorter than the first air duct. Specifically, the hair removal device includes a housing, and both the first and second air ducts are disposed within the housing.

[0024] Compared with the prior art, this application has the following advantages: The hair removal device employing the airflow mechanism described in this application, when the axial fan assembly is operating, draws in air through the air inlet. As the air is drawn in from the first air intake surface of the first fan and blown out from the first air outlet surface, the airflow is compressed within the space formed between the first and second fans due to the opposite rotation direction of the second blade assembly of the second fan. This compressed air is then drawn in from the second air intake surface and blown out from the second air outlet surface via the second fan. Because the air is released instantaneously, the pressure increases the explosive force at the air outlet, resulting in a higher wind speed. This increases the wind speed and extends the distance the air travels. Attached Figure Description

[0025] Figure 1 This is an exploded view of the structure of an embodiment of the hair removal device of this application.

[0026] Figure 2This is a cross-sectional view of an embodiment of the hair removal device of this application.

[0027] Figure 3 This is a schematic diagram of the airflow of the axial flow fan unit in this application.

[0028] Figure 4 This is a cross-sectional view of the axial flow fan unit of this application.

[0029] Figure 5 This is a schematic diagram of the air compression space between the first fan and the second fan in this application.

[0030] Figure 6 This is a three-dimensional schematic diagram of the air compression space between the first fan and the second fan in this application.

[0031] Figure 7 This is a schematic diagram of the first air intake surface of the first fan in this application.

[0032] Figure 8 This is a schematic diagram of the second air outlet surface of the second fan in this application.

[0033] Figure 9 This is a schematic diagram of the air guide plate assembly of the axial flow fan unit in this application. Detailed Implementation

[0034] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0035] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0036] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0037] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "rear," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0038] Please see Figure 1 and Figure 2 The diagram below shows an exploded view of the overall structure of one embodiment of the hair removal device of this application. The device includes a housing 100, and a light-emitting component 300, a heat dissipation component 400, and an air duct mechanism disposed within the housing 100. The air duct mechanism includes a first air duct 110 formed within the housing 100 and an axial flow fan unit 200 disposed within the first air duct 110. The first air duct 110 includes an air inlet 101 and an air outlet 102. The heat dissipation component is disposed within the first air duct 110, and the axial flow fan unit 200 is disposed between the air inlet 101 and the air outlet 102. Specifically, the hair removal device has an air inlet shroud 103 and an air outlet shroud 104 at the air inlet 101 and the air outlet 102, respectively.

[0039] The axial flow fan unit 200 includes a first fan 210 and a second fan 220. The first fan 210 and the second fan 220 are arranged adjacent to each other and maintain a gap distance in the axial direction of the first air duct 110. The first fan 210 and the second fan 220 are configured to rotate in opposite directions when powered on. Specifically, the first fan 210 can rotate clockwise and the second fan 220 can rotate counterclockwise; or the first fan 210 can rotate counterclockwise and the second fan 220 can rotate clockwise. In a specific embodiment, the axial flow fan unit 200 is located near the air inlet 101 of the first air duct 110, and the first fan 210 is located between the air inlet 101 of the first air duct 110 and the second fan 220. In other embodiments, the axial flow fan unit 200 can also be located near the air outlet 102 of the first air duct 110. The arrangement of the first fan 210 and the second fan 220 in the axial flow fan unit 200 allows air entering the air inlet 101 from the first air duct to be compressed through the space 230 between the first fan 210 and the second fan 220, and then explosively released from the second fan 220, accelerating the airflow speed. The dispersed airflow results in a larger air volume and higher air speed, thus greatly improving the heat dissipation effect of the heat dissipation components in the air duct mechanism. The hair removal device of this application has good heat dissipation, high user comfort, and good hair removal effect. The first fan 210 and the second fan 220 can be two separate fan units, or they can be an integrated structure.

[0040] like Figure 2 As shown, the hair removal device also includes a second air duct 120. Both the first air duct 110 and the second air duct 120 are disposed within the housing 100. The second air duct 120 communicates with the first air duct 110, and the air inlet 121 and air outlet 122 of the second air duct 120 are oriented in the same direction as the air inlet 101 and air outlet 102 of the first air duct 110. The light-emitting component 300 is placed in the second air duct 120. Specifically, the air inlet 121 of the second air duct 120 is located closer to the air inlet 101 of the first air duct 110, and the air outlet 122 of the second air duct 120 is located closer to the air outlet 102 of the first air duct 110. Specifically, the second air duct 120 is shorter than the first air duct 110; or, in other words, the second air duct 120 is a branch of the first air duct. The air drawn in at the air inlet 101 is accelerated by the axial flow fan unit 200 and flows through the main channel of the first air duct 110 to dissipate heat from the heat dissipation component 400 therein; and a branch of air flows through the branch, namely the second air duct 120, to dissipate heat from the light-emitting component 300 therein. In a specific embodiment, this mainly involves dissipating heat from the reflector cup heat sink 301 of the light-emitting component 300 and the heat sink 401 of the heat dissipation component 400.

[0041] Please refer to the following for details. Figures 3-9 The first fan 210 includes a first air inlet surface 201 and a first air outlet surface 202, and the second fan 220 includes a second air inlet surface 203 and a second air outlet surface 204. The first air outlet surface 202 and the second air inlet surface 203 are adjacent to each other and maintain a gap distance to form an air compression space 230. The axial flow fan unit 200 also includes a fan assembly housing 240, and the first fan 210 and the second fan 220 are disposed within the fan assembly housing 240.

[0042] The first fan 210 includes a first blade group 211, and the second fan 220 includes a second blade group 221. In some embodiments, the first blade group 211 includes at least three blades, and the second blade group 221 has more blades than the first blade group 211. In some embodiments, the number of blades in the first blade group 211 and the second blade group 221 can be odd or even. In this embodiment, the first blade group 211 includes five blades, and the second blade group 221 includes seven blades. The aforementioned examples of the number of blades are only some embodiments and do not constitute a limiting feature of the technical solution of this application.

[0043] In a specific embodiment, the blades of the first blade group 211 and the blades of the second blade group 221 are misaligned. The misalignment of the blades of the first fan 210 and the second fan 220 allows air to be drawn in and blown out by the first fan 210. Upon reaching the second fan 220, the misaligned blades of the second fan 220 compress the airflow to a certain extent, effectively compressing the air in the space 230 between the first fan 210 and the second fan 220. Figures 3-6 As shown, the airflow is further dispersed and split by the blades of the second fan 220, enhancing the explosive force of the compressed air, which is beneficial for uniform airflow and increased wind speed. In some specific embodiments, the first blade group 211 is arranged in the opposite direction to the second blade group 221. This allows both fans to obtain greater wind force simultaneously when they rotate in opposite directions, amplifying the combined wind force of the two fan groups.

[0044] like Figure 8 and Figure 9 As shown, the second fan 220 is also provided with an air guide plate assembly 222 at the second air outlet surface 204. The air guide plate assembly 222 includes at least three air guide plates that are evenly distributed along the axis in an arc shape. In this embodiment, five air guide plates are provided.

[0045] The hair removal device employing the air duct mechanism described in this application, when the axial fan assembly is operating, draws in air through the air inlet 101. As the air is drawn in through the first air intake surface 201 of the first fan 210 and blown out through the first air outlet surface 202, the airflow is compressed within the space 230 formed between the first fan 210 and the second fan 220 due to the opposite rotation direction of the second blade assembly 221 of the second fan 220. The compressed air is then drawn in through the second fan 220 through the second air intake surface 203 and blown out through the second air outlet surface 204. Because the air is released instantaneously, the bursting force at the air outlet 102 is increased under pressure, resulting in a higher wind speed. This increases the wind speed and extends the distance the air travels.

[0046] The above description is only a preferred embodiment of this application. The scope of protection of this application is not limited thereto. Any equivalent transformation based on the technical solution of this application shall fall within the scope of protection of this application.

Claims

1. A hair removal device, comprising a housing and a light-emitting component and a heat-dissipating component disposed inside the housing, the housing having an air inlet and an air outlet, a first air duct disposed inside the housing, the first air duct communicating with the air inlet and the air outlet, the heat-dissipating component being disposed in the first air duct, characterized in that, The first air duct is arranged along the axis of the hair removal device. External air is drawn into the first air duct from the air inlet and flows along the axial direction to the air outlet and out of the hair removal device. An axial flow fan unit is also arranged inside the housing, located in the first air duct. The axial flow fan unit includes a first fan and a second fan. The first fan and the second fan are arranged in parallel, coaxially, and at intervals. The interval between the first fan and the second fan forms an air compression space. The air drawn into the first air duct flows through the first fan, is compressed by the air compression space, flows into the second fan, and is accelerated by the second fan. The accelerated air dissipates heat from the heat dissipation component and is discharged from the air outlet.

2. The hair removal device as described in claim 1, characterized in that, The first fan and the second fan are configured to rotate in opposite directions when they are working.

3. The hair removal device as described in claim 1, characterized in that, The first fan includes a first blade group, and the second fan includes a second blade group; the axial flow fan unit includes a fan group housing and the first blade group and the second blade group disposed within the fan group housing; the fan group housing is adaptedly fitted into the hair removal device housing.

4. The hair removal device as described in claim 3, characterized in that, The first blade group is arranged in the opposite direction to the second blade group.

5. The hair removal device as described in claim 3, characterized in that, The hair removal device housing is cylindrical, and the fan assembly housing is cylindrical. The cylindrical fan assembly housing is adapted to be attached to the inner wall of the cylindrical hair removal device housing to form a coaxial nested structure, so that as much air as possible is drawn in from the air inlet into the axial flow fan unit; the first fan is located close to the air inlet.

6. The hair removal device as described in claim 3, characterized in that, The first blade group includes at least three blades, and the second blade group has more blades than the first blade group; the blades of the first blade group and the blades of the second blade group are staggered.

7. The hair removal device as described in claim 3, characterized in that, The first fan forms a first air inlet surface and a first air outlet surface at both ends along the axial direction, and the second fan forms a second air inlet surface and a second air outlet surface at both ends along the axial direction. The first air inlet surface faces the air inlet and is located behind the air inlet. The second air inlet surface faces the first air outlet surface and the air compression space is formed between the two.

8. The hair removal device as described in claim 7, characterized in that, The second fan is further provided with an air guide plate assembly at the second air outlet surface, the air guide plate assembly including at least three air guide plates evenly distributed along the axis in an arc shape.

9. The hair removal device as described in claim 3, characterized in that, The axial flow fan unit is an integral structure, and the fan assembly housing is an integral housing, including a first fan housing, an air compression space housing, and a second fan housing portion. The first blade assembly is installed inside the first fan housing, and the second blade assembly is installed inside the second fan housing.

10. The hair removal device according to any one of claims 1 to 9, characterized in that, The hair removal device is also provided with a second air duct, which is connected to the first air duct. The air inlet and outlet of the second air duct are set in the same direction as the air inlet and outlet of the first air duct. The light-emitting component is placed in the second air duct.

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