Drying equipment

Abstract

The present invention discloses a drying device, which comprises: a housing, in which an air duct is provided; a motor, located in the housing and used for generating an air flow in the air duct; a radiation source, housed in the housing and used for generating infrared radiation and guiding the infrared radiation to the outside of the housing, wherein the radiation source transfers heat through a heat dissipation structure; a first air guiding member, which is arranged in the air duct and forms a part of the heat dissipation structure. In the above drying device, through the heat dissipation structure, the heat generated by the radiation source during operation can be transferred to other components of the drying device, so that the radiation source can work at a suitable temperature and ensure its service life.

Description

[0001] Priority Information

[0002] This application claims the priority and benefits of the patent application with the patent application number PCT / CN2020 / 089408 filed with the State Intellectual Property Office of China on May 9, 2020, the priority and benefits of the patent application with the patent application number PCT / CN2020 / 095146 filed with the State Intellectual Property Office of China on June 9, 2020, and the priority and benefits of the patent application with the patent application number PCT / CN2021 / 082835 filed with the State Intellectual Property Office of China on March 24, 2021, and incorporates the entire text thereof herein by reference. Technical Field

[0003] This application relates to the field of drying technology, and particularly relates to a drying device. Background Art

[0004] Currently, there is already a hair dryer that can emit infrared radiation to dry hair, and the hair dryer has a radiation source for emitting infrared radiation. When the radiation source works, it needs to be maintained at a suitable working temperature to maintain a better working state and extend the service life. Therefore, it is necessary to provide a heat dissipation solution for the radiation source. Summary of the Invention

[0005] An embodiment of this application provides a drying device.

[0006] A drying device according to an embodiment of this application includes:

[0007] A housing, within which there is an air duct;

[0008] A motor, located in the housing and used to generate an air flow in the air duct;

[0009] A radiation source, housed in the housing and used to generate infrared radiation and direct the infrared radiation to the outside of the housing, and the radiation source transfers heat through a heat dissipation structure;

[0010] A first air guiding member, which is arranged in the air duct and forms a part of the heat dissipation structure.

[0011] In the above drying device, through the heat dissipation structure, the heat generated by the radiation source during operation can be transferred to other components of the drying device, so that the radiation source can work at a suitable temperature and ensure the service life.

[0012] Additional aspects and advantages of this application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of this application. Description of the Drawings

[0013] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0014] Figure 1 is a schematic structural diagram of a drying device according to an embodiment of the present application;

[0015] Figure 2 is a partial schematic structural diagram of a drying device according to an embodiment of the present application;

[0016] Figure 3 A-3D is a schematic diagram showing the relationship between the radiation source and the air duct of a drying device according to an embodiment of the present application;

[0017] Figure 4 is another partial schematic structural diagram of a drying device according to an embodiment of the present application;

[0018] Figure 5 A-5D is another schematic diagram showing the relationship between the radiation source and the air duct of a drying device according to an embodiment of the present application;

[0019] Figure 6 is yet another partial schematic structural diagram of a drying device according to an embodiment of the present application;

[0020] Figure 7 A-7D is yet another schematic diagram showing the relationship between the radiation source and the air duct of a drying device according to an embodiment of the present application.

[0021] Figure 8 is still another partial schematic structural diagram of a drying device according to an embodiment of the present application;

[0022] Figure 9 A-9D is still another schematic diagram showing the relationship between the radiation source and the air duct of a drying device according to an embodiment of the present application;

[0023] Figure 10 is still another partial schematic structural diagram of a drying device according to an embodiment of the present application;

[0024] Figure 11 A-11D is still another schematic diagram showing the relationship between the radiation source and the air duct of a drying device according to an embodiment of the present application;

[0025] Figure 12 is still another partial schematic structural diagram of a drying device according to an embodiment of the present application;

[0026] Figure 13 A-13B is still another schematic diagram showing the relationship between the radiation source and the air duct of a drying device according to an embodiment of the present application;

[0027] Figure 14 is still another partial schematic structural diagram of a drying device according to an embodiment of the present application;

[0028] Figure 15 is a perspective view of a partial structure of the drying equipment according to an embodiment of the present application;

[0029] Figure 16 is a perspective view of the radiation source of the drying equipment according to an embodiment of the present application;

[0030] Figure 17 is a partial cross-sectional view of the drying equipment according to an embodiment of the present application;

[0031] Figure 18 A- Figure 41 D is a schematic diagram showing the relationship between the radiation source and the air duct of the drying equipment according to an embodiment of the present application;

[0032] Figure 42 A-42B is a schematic diagram showing the relationship between the radiation source and the optical element according to an embodiment of the present application. Detailed Embodiments

[0033] The following describes in detail the embodiments of the present application. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may also include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0037] The disclosure herein provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0038] An embodiment of the present application provides a drying device. The drying device of the present application can remove water and moisture from an object (such as hair, fabric) by using an infrared (IR) radiation source as a heat energy source. The infrared radiation source can emit infrared energy with a preset wavelength range and power density to heat the object. The heat carried by the infrared energy is directly transferred to the object in a radiative heat transfer manner, so that the heat transfer efficiency is improved compared with the traditional convective heat transfer manner (for example, substantially no heat is absorbed by the surrounding air in the radiative heat transfer manner, while a large part of the heat is absorbed by the surrounding air and carried away in the traditional heat conduction manner). The infrared radiation source can be used in combination with an electric motor, and the airflow generated by the electric motor further accelerates the evaporation of water from the object.

[0039] Another advantage of using infrared radiation as a heat energy source is that infrared heat can penetrate the hair shaft until the cortex of the cuticle, thus drying the hair faster and making the hair loose and soft. Infrared energy is also considered beneficial to scalp health and stimulates hair growth by increasing blood flow to the scalp. The use of the infrared radiation source can also make the drying device compact and lightweight. The improvement of the heat transfer efficiency and energy efficiency of the infrared radiation source can also extend the operating time of a wireless drying device powered by an embedded battery.

[0040] Please refer Figure 1, a drying device 100 provided by an embodiment of the present application may include a housing 10, a motor 20, and a radiation source 30. A duct 40 is provided inside the housing 10. The housing 10 can accommodate various electrical, mechanical, and electromechanical components, such as the motor 20, the radiation source 30, a control board (not shown), and a power adapter (not shown), etc.

[0041] The housing 10 may include a body 102 and a handle 104, and each of the body 102 and the handle 104 can accommodate at least a part of electrical, mechanical, and electromechanical components therein. In some embodiments, the body 102 and the handle 104 may be integrally connected. In some embodiments, the body 102 and the handle 104 may be separate components. For example, the handle 104 may be detachable from the body 102. In one example, the detachable handle 104 can accommodate a power source (such as one or more batteries) for powering the drying device 100. The housing 10 can be made of an electrically insulating material. Examples of the electrically insulating material may include polyvinyl chloride (PVC), polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene copolymer (ABS), polyester, polyolefin, polystyrene, polyurethane, thermoplastic, silicone, glass, glass fiber, resin, rubber, ceramic, nylon, and wood. The housing 10 can also be made of a metal material coated with an electrically insulating material, or made of a combination of an electrically insulating material and a metal material coated or not coated with an electrically insulating material. For example, the electrically insulating material can form the inner layer of the housing 10, while the metal material can form the outer layer of the housing 10. In one example, an input component 106 is further provided on the handle 104, and the input component 106 can be used for a user to operate the drying device, such as turning on / off the drying device, adjusting the motor speed, the power of the radiation source, etc. The input component 106 may include at least one of a physical button, a virtual button, and a touch screen. In other embodiments, the drying device may also omit the input component, and the drying device can be controlled by a terminal communicating with the drying device. The terminal may include, but is not limited to, a mobile phone, a tablet computer, a wearable smart device, a personal computer, etc.

[0042] The housing 10 can be provided with one or more air ducts 40 inside. The air ducts 40 can be fixed within the housing 10 so that the airflow generated by the motor 20 can flow stably, avoiding unexpected airflow disturbances. The airflow generated by the motor 20 can be guided or regulated through the air ducts and towards the user's hair. For example, the air ducts 40 can be shaped to at least adjust the speed, throughput, divergence angle, or vortex intensity of the airflow leaving the drying device 100. The air ducts 40 can include an air inlet 402 and an air outlet 404. In one example, the air inlet 402 and the air outlet 404 can be placed at opposite ends of the drying device 100 along the longitudinal direction of the drying device 100 (such as the length direction of the main body 102). The air inlet 402 and the air outlet 404 can each be a vent that allows an effective airflow throughput. Ambient air can be drawn into the air ducts 40 through the air inlet 402 to generate an airflow, and the generated airflow can leave the air ducts 40 through the air outlet 404. The motor 20 can be located within the air ducts 40 of the main body 102 or within the air ducts 40 of the handle 104, and no specific limitation is made here. The air inlet 402 can also be provided on the handle 104, or on both the handle 104 and the main body 102.

[0043] The cross-sectional shape of the air outlet 404 can be any shape, preferably circular, oval, rectangular (square), square, or various variants of circles and quadrilaterals, such as a quadrilateral with rounded corners, etc. No specific limitation is made here.

[0044] In one example, there is one air duct 40 provided inside the main body 102, and the air duct 40 is substantially cylindrical. It can be understood that in other embodiments, the air duct 40 can also be in other shapes, such as a funnel shape, a Y shape, and various regular or irregular shapes, and no specific limitation is made here.

[0045] In one embodiment, one or more air filters (not shown in the figure) can be provided at the air inlet 402 to prevent dust or hair from entering the air ducts 40. For example, the air filter can be a grid with an appropriate mesh size. The air filter can be removable or replaceable for cleaning and maintenance. In one embodiment, an air flow regulator (not shown in the figure) can be provided at the air outlet 404. The air flow regulator can be a removable nozzle, comb, or curler. The air flow regulator can be configured to adjust the speed, throughput, divergence angle, or vortex intensity of the airflow blown out from the air outlet 404. For example, the air flow regulator can be shaped to converge (e.g., concentrate) the airflow at a preset distance in front of the air outlet 404. For example, the air flow regulator can be shaped to diverge the airflow leaving the air outlet 404.

[0046] In one embodiment, since the radiation source 30 for generating infrared radiation is provided inside the housing 10, there may be no additional heating device in the housing 10. On the one hand, the radiation power of the radiation source 30 can be adjusted to achieve the desired drying effect. On the other hand, the absence of an additional heating device can also miniaturize the drying device 100, thereby improving the portability of the drying device 100. The absence of an additional heating device can also make the energy consumption of the drying device 100 relatively low, which can increase the battery life of the drying device 100. In some embodiments, the heating device includes an electric heating wire (such as a resistance wire).

[0047] In one embodiment, the motor 20 is located in the housing 10 and is used to generate an air flow in the air duct 40. In one example, the motor 20 can be disposed inside the air duct 40 of the main body 102 and near the air flow inlet 402. The motor 20 may include a driving portion 202 and an impeller 204. The impeller 204 may include a plurality of fan blades. When the impeller 204 is driven by the driving portion 202, the rotation of the impeller 204 can send ambient air into the air duct 40 through the air flow inlet 402 to generate an air flow, push the generated air flow through the air duct 40 and discharge the air flow from the air flow outlet 404. The driving portion 202 can be supported by a bracket or accommodated in a shroud. The motor 20 may include a brushless motor 20, and the rotation speed of the impeller 204 can be adjusted under the control of a controller (not shown). For example, the rotation speed of the impeller 204 can be controlled by a preset program, user input or sensor data. In some embodiments, the size of the driving portion 202 measured in any direction can be in the range between 14 mm (millimeters) and 21 mm. The power output of the motor 20 can be in the range of 35 to 80 watts (W). The maximum speed of the air flow leaving the air flow outlet 404 can be at least 8 meters per second (m / s).

[0048] In Figure 1 and Figure 2 FIGS. show that the motor 20 is disposed in the main body 102. It can be understood that in other embodiments, the motor 20 can also be disposed in the handle 104. For example, the rotation of the impeller 204 can draw air into the air flow inlet 402 provided at the handle 104 and push the air through the air duct 40 to the air flow outlet 404 provided at one end of the main body 102. The air duct 40 can correspondingly extend through the handle 104 and the main body 102 of the housing 10.

[0049] In one embodiment, the passing frequency of the fan blades of the motor 20 is close to the frequency range of ultrasonic waves. The passing frequency of the fan blades can be expressed as the product of the rotational speed of the motor and the number of fan blades of the motor 20. That the passing frequency of the fan blades of the motor 20 is close to the frequency range of ultrasonic waves can be understood as that the passing frequency of the fan blades is within the frequency range of ultrasonic waves, or the passing frequency of the fan blades is the upper limit or the lower limit of the frequency range of ultrasonic waves, or the difference between the passing frequency of the fan blades and the upper limit or the lower limit of the frequency range of ultrasonic waves is less than a preset value. In one example, the rotational speed unit of the motor 20 is rps (revolutions per second), and the passing frequency of the fan blades is greater than or equal to 15 KHz.

[0050] In one embodiment, the number of fan blades of the motor 20 is a prime number greater than or equal to 5.

[0051] In Figure 1 In the example of , a part of the radiation source 30 is located outside the air duct 40, and the other part can exchange heat with the air duct 40. For example, the radiation source 30 may include a reflector cup 302. A part of the outer wall of the reflector cup 302 (such as the windward surface) is located outside the air duct 40, and this part is not blown by the air flow in the air duct 40. Therefore, the heat exchange amount of this part with the air duct 40 is small. On the one hand, it can appropriately dissipate heat from the radiation source 30. On the other hand, it can also keep the radiation source 30 at a suitable operating temperature during operation, and can improve the evaporation efficiency of the water on the object.

[0052] In one embodiment, the rotational speed of the motor 20 is greater than or equal to 50000 rpm (revolutions per minute). That is to say, the rotational speed of the motor is at least 50,000 revolutions per minute. In this way, by using the high-speed motor 20 (the rotational speed of the motor 20 is greater than or equal to 50000 rpm), while generating sufficient air volume, it can also appropriately dissipate heat from the radiation source 30.

[0053] Specifically, in the prior art, due to the use of a low-speed motor, in order to effectively dissipate heat from a single high-power radiation source, the radiation source is usually directly placed in the air duct as a whole. For example, the entire outer wall (i.e., the entire windward surface) of the reflector cup of the radiation source is directly blown by the air flow in the air duct to take away the heat of the radiation source. However, the disadvantages of this drying device are: 1) The body length along the axial direction of the air duct (such as the horizontal direction) is relatively long (large in size), because a) the reflector cup of the radiation source is generally parabolic and relatively long; b) the temperature of the air flow outlet close to the radiation is extremely high, and an isolation device needs to be set to prevent scalding and accidents. 2) The shape of the radiation source in the air duct 40 (such as the outer wall shape of the reflector cup) will affect the air flow, such as generating wind resistance, wind noise, changing the direction of the air flow, etc., and finally wasting the energy of the wind.

[0054] In the embodiments of the present application, an object will radiate in the infrared to visible wavelength range in the form of heat transfer. This heat transfer is called blackbody radiation. Blackbody radiation is broadband radiation. The central wavelength and spectral bandwidth decrease with increasing temperature. The total energy is proportional to S×T4, where S represents the surface area and T represents the temperature. Given the operating temperature required for the blackbody radiation of the radiation source 30 and the air volume (measured in Cubic per Minute / CPM) of the high-speed motor 20, the heat dissipation efficiency can be deduced, and then the heat dissipation area required for the radiation source 30 can be deduced. This heat dissipation area is smaller than the heat dissipation area of the prior art in which the entire radiation source 30 is placed in the air duct 40. Therefore, a part of the radiation source 30 in the embodiments of the present application can be located outside the air duct 40 and is not directly blown by the airflow in the air duct 40, which can also enable the radiation source 30 to be maintained at a suitable operating temperature even when a high-power single radiation source 30 is used. At the same time, since a part of the radiation source 30 is located outside the air duct 40, the radiation source 30 can be offset radially along the air duct 40 (such as the vertical direction) in terms of structure, which can reduce the length of the main body 102, and the adverse impact of the shape of the radiation source 30 on the airflow is also reduced.

[0055] In one embodiment, the motor 20 is fixed in the housing 10 through a shock absorption device (not shown in the figure). In this way, the vibration generated by the motor 20 can be reduced or avoided from being transmitted to the housing 10, avoiding causing trouble to the user during use.

[0056] Specifically, the shock absorption device may include an elastic member, and the vibration generated when the motor 20 operates can be absorbed by the elastic member, reducing the transmission of vibration.

[0057] In one embodiment, the shock absorption device is fixedly connected to the radiation source 30. In this way, the transmission path of the vibration generated by the motor 20 is increased, and the vibration transmitted to the housing 10 generated by the motor 20 is further reduced. Specifically, the shock absorption device is fixedly connected to the radiation source 30, and the radiation source 30 can be fixed in the housing 10. In this way, the formed vibration transmission path is further: motor 20 -> shock absorption device -> radiation source 30 -> housing 10.

[0058] In one embodiment, the shock absorption device includes a sleeve formed of an elastic material. The sleeve includes a clamping portion that extends around the sleeve and is flexibly coupled to at least one of the housing 10, the air duct 40, and the radiation source 30. In this way, the transmission of vibration is reduced through the flexibly coupled clamping portion.

[0059] Specifically, the sleeve can be sleeved outside the driving portion 202 of the motor 20, the clamping portion can be arranged on the outer surface of the sleeve, and the clamping portion can be formed into a plurality (two or more than two), and is evenly spaced along the circumferential direction of the sleeve to evenly reduce the transmission of vibration. Of course, the clamping portion can also be formed into a single one, and the single clamping portion is annularly arranged on the outer surface of the sleeve.

[0060] The sleeve includes a clamping portion extending around the sleeve and flexibly coupled to at least one of the housing 10, the air duct 40, and the radiation source 30. It can be that the sleeve includes a clamping portion extending around the sleeve and flexibly coupled to the housing 10. It can be that the sleeve includes a clamping portion extending around the sleeve and flexibly coupled to the air duct 40. It can be that the sleeve includes a clamping portion extending around the sleeve and flexibly coupled to the radiation source 30. It can be that the sleeve includes a clamping portion extending around the sleeve and flexibly coupled to the housing 10 and the air duct 40. It can also be that the sleeve includes a clamping portion extending around the sleeve and flexibly coupled to the air duct 40 and the radiation source 30. It can be that the sleeve includes a clamping portion extending around the sleeve and flexibly coupled to the housing 10 and the radiation source 30. It can further be that the sleeve includes a clamping portion extending around the sleeve and flexibly coupled to the housing 10, the air duct 40, and the radiation source 30.

[0061] In one embodiment, the clamping portion is a protrusion formed of a rubber material. Thus, the protrusion facilitates connection, and the protrusion formed of the rubber material is also easy to mold and has a better shock absorption effect.

[0062] In one embodiment, the radiation source 30 is received in the housing 10 and is used to generate infrared radiation and direct the infrared radiation outside the housing 10. The radiation source 30 may include a first part and a second part, wherein the first part is located outside the air duct 40, and the second part is connected to the first part and exchanges heat with the air duct 40.

[0063] The number of the radiation sources 30 can be single or multiple (two or more than two). When the number of the radiation sources 30 is multiple, the radiation sources 30 are configured to form a light spot at a certain distance outside the opening side of the radiation sources 30. Thus, the infrared radiation intensity in the light spot area is relatively high, and the object can be effectively dried. It can be understood that a single radiation source 30 can also be configured to form a light spot at a certain distance outside the opening side of the radiation source 30.

[0064] Specifically, by adjusting the opening direction of the radiation source 30, a light spot is formed at a certain distance outside the drying device 100 by multiple radiation sources 30. The light spot can be a circular light spot, and the diameter of the circular light spot can be 10 cm. In one example, the certain distance can be 10 cm.

[0065] In one embodiment, along the air flow direction, the second part is located downstream of the motor 20. Thus, the heat exchange effect between the second part and the air duct 40 can be improved.

[0066] Specifically, please refer to Figure 1, the radiation source 30 is entirely located near the left side of the drying device 100, and the motor 20 is located near the right side of the drying device 100. When the motor 20 operates, it sucks air from the external environment on the right side of the drying device 100 and outputs a relatively fast airflow from the left side of the motor 20. The airflow flows towards the radiation source 30. The relatively fast airflow can improve the heat exchange efficiency between the second part and the air duct 40.

[0067] In one embodiment, during operation, the radiation source 30 is located between the air duct 40 and the housing 10. In this way, a configuration of the drying device 100 can be achieved, as Figure 1 shown.

[0068] Specifically, during operation, it can be understood that at least one of the radiation source 30 and the motor 20 is turned on, including the radiation source 30 being turned on and the motor 20 being turned off, the radiation source 30 being turned off and the motor 20 being turned on, and the radiation source 30 being turned on and the motor 20 being turned on.

[0069] In one embodiment, the radiation source 30 can be fixed within the housing 10. That is to say, whether the drying device 100 is operating or not, the radiation source 30 is located between the air duct 40 and the housing 10, and the radiation source 30 is not entirely located within the air duct 40. In one embodiment, the radiation source 30 is movably arranged within the housing 10. For example, by adding a moving structure to adjust the position of the radiation source 30, so that when the drying device 100 is operating, the radiation source 30 is driven to the position between the air duct 40 and the housing 10. When the drying device 100 is not operating, the radiation source 30 is moved to other positions, such as within the air duct 40 or other positions within the housing 10 that are convenient for storage. In one embodiment, it can be a moving structure to adjust the position of the air duct 40, or a moving structure to adjust the positions of the air duct 40 and the radiation source 30. No specific limitation is made here.

[0070] In one embodiment, all the radiation sources 30 are located outside the air duct 40. The number of radiation sources 30 can include multiple. All the radiation sources 30 are located outside the air duct 40, so that during operation, the airflow resistance generated by the air duct 40 is small, which helps to reduce wind noise and wind resistance.

[0071] Specifically, there is no radiation source 30 in the air duct 40, which has little impact on the wind speed and air volume of the wind, and no additional wind noise is generated. The wind speed and air volume have a great impact on the blowing speed. In particular, when the drying device 100 is used for drying hair, since the drying device 100 is close to the ear during the hair drying process, low noise can improve the user experience.

[0072] In one embodiment, the radiation source 30 may be disposed circumferentially of the air duct 40 near the air outlet 404 of the air duct 40. In this way, on the one hand, when the air flows out from the air outlet 404, part of the heat of the radiation source 30 is carried away by the air, raising the air temperature by several degrees (1 to 5 degrees). Although it is not enough to have a decisive impact on the object to be dried (such as drying hair), it improves the user's physical sensation when the air blows on the human body, making people not feel the cold air blowing, thus enhancing the user experience. On the other hand, the infrared radiation emitted by the radiation source 30 is basically not blocked by the air duct 40, which is beneficial to improving the drying efficiency.

[0073] In one embodiment, the radiation source 30 is arranged around the air outlet 404 of the air duct 40. In Figure 2 , Figure 3 In the example of A-3D, the planar shape of the radiation source 30 perpendicular to the axial direction of the air duct 40 is circular or approximately circular. In Figure 3 In the example of A, the number of the radiation sources 30 is two, and the two radiation sources 30 are arranged around the air outlet 404 of the air duct 40 at an interval of 180 degrees. In Figure 3 In the example of B, the number of the radiation sources 30 is three, and the three radiation sources 30 are arranged around the air outlet 404 of the air duct 40 at an interval of 120 degrees. In Figure 3 In the example of C, the number of the radiation sources 30 is four, and the four radiation sources 30 are arranged around the air outlet 404 of the air duct 40 at an interval of 90 degrees. In Figure 3 In the example of D, the number of the radiation sources 30 is five, and the five radiation sources 30 are arranged around the air outlet 404 of the air duct 40 at an interval of 72 degrees. It can be understood that the number of the radiation sources 30 can also be more than five, and they are arranged around the air outlet 404 of the air duct 40 at uniform intervals along the circumferential direction of the air duct 40. In addition, in other embodiments, among the multiple radiation sources 30, the angles between adjacent two radiation sources 30 can be different. No specific limitation is made here. In Figure 4 , Figure 5 In the example of A-5D, the planar shape of the radiation source 30 perpendicular to the axial direction of the air duct 40 is circular ring-shaped or fan-shaped. In Figure 5 In the example of A, the number of the radiation sources 30 is single, and the single radiation source 30 is circular ring-shaped, and is arranged around the air outlet 404 of the air duct 40 along the circumferential direction of the air duct 40 for 360 degrees. In Figure 5 In the example of B, the number of the radiation sources 30 is two, and each radiation source 30 is basically in a fan shape of 180 degrees. Each radiation source 30 is arranged around the air outlet 404 of the air duct 40 along the circumferential direction of the air duct 40 for nearly 180 degrees, and the two radiation sources 30 are arranged to be basically circular ring-shaped. In Figure 5In the example of C, the number of radiation sources 30 is three. Each radiation source 30 is basically in a fan shape of 120 degrees. Each radiation source 30 is arranged circumferentially around the air outlet 404 of the air duct 40 at an angle close to 120 degrees, and the three radiation sources 30 are arranged in a substantially circular ring shape. In Figure 5 In the example of D, the number of radiation sources 30 is four. Each radiation source 30 is basically in a fan shape of 90 degrees. Each radiation source 30 is arranged circumferentially around the air outlet 404 of the air duct 40 at an angle close to 90 degrees, and the four radiation sources 30 are arranged in a substantially circular ring shape. It can be understood that the number of radiation sources 30 can also be more than four, and they are arranged circumferentially around the air outlet 404 of the air duct 40 at uniform intervals. In addition, in other embodiments, among the multiple radiation sources 30, the fan-shaped arc of each radiation source 30 can be different. No specific limitation is made here.

[0074] In one embodiment, the radiation source 30 is arranged on one side of the air outlet 404 of the air duct 40. In Figure 6 、 Figure 7 In the examples of A - 7D, the planar shape of the radiation source 30 along the plane perpendicular to the axial direction of the air duct 40 is circular or approximately circular. In Figure 7 In the example of A, the number of radiation sources 30 is single, and the single radiation source 30 is arranged on the lower half side of the air outlet 404 of the air duct 40. In Figure 7 In the example of B, the number of radiation sources 30 is two, and the two radiation sources 30 are arranged on the lower half side of the air outlet 404 of the air duct 40. In Figure 7 In the example of C, the number of radiation sources 30 is three, and the three radiation sources 30 are arranged on the lower half side of the air outlet 404 of the air duct 40. In Figure 7 In the example of D, the number of radiation sources 30 is four, and the four radiation sources 30 are arranged on the lower half side of the air outlet 404 of the air duct 40. It can be understood that the number of radiation sources 30 can also be more than five, and they are arranged on the lower half side of the air outlet 404 of the air duct 40. In addition, in other embodiments, the radiation source 30 can also be arranged on the upper half side, left half side, right half side, upper left half side, lower left half side, upper right half side, lower right half side. No specific limitation is made here. In other embodiments, the planar shape of the radiation source 30 along the plane perpendicular to the axial direction of the air duct 40 can be circular ring shape or fan shape.

[0075] In other embodiments, it can also be any combination of circular radiation sources 30, circular ring-shaped radiation sources 30, and fan-shaped radiation sources 30 that are dispersedly arranged on one side of the air outlet 404 of the air duct 40, or arranged around the air outlet 404 of the air duct 40.

[0076] In one embodiment, the second part is integrally formed and connected with the air duct 40. In this way, the heat exchange efficiency between the second part and the air duct 40 can be high.

[0077] Specifically, the radiation source 30 may include a reflector cup 302. The second part may be a part of the outer wall of the reflector cup 302 or a part of the base 310 of the reflector cup 302. The reflector cup 302 may be integrally formed and connected to the air duct 40. The integral forming connection can be achieved by an injection molding process or a welding process. No specific limitation is made here. The outer wall of the reflector cup 302 and the air duct 40 form a joint at the air outlet 404. At the joint, the inhaled air exchanges heat with the reflector cup 302, and the temperature of the air will increase by about 1 to 5 degrees and then be blown out. Although it is not enough to have a decisive impact on the object to be dried (such as drying hair), it improves the user's physical feeling when the air blows on the human body, making people not feel the cold air blowing, thus improving the user experience.

[0078] In one embodiment, the radiation source 30 is surrounded by the air duct 40, and the radiation source 30 is not entirely located within the air duct 40. In this way, another configuration of the drying device 100 can be achieved, as Figure 8 shown.

[0079] Specifically, the radiation source 30 can be placed in the air duct 40. The first part of the radiation source 30 can be blocked by a shielding member so that the first part is not blown by the air flow in the air duct 40. For example, the first part may include a part of the outer wall of the reflector cup 302, and this part can be blocked so that it is not blown by the air flow in the air duct 40. And the unblocked part of the outer wall of the reflector cup 302 can be used as the second part, and the air flow in the air duct 40 can blow to the second part so that the second part exchanges heat with the air duct 40.

[0080] In Figure 8 、 Figure 9 Examples A-9D, the planar shape of the radiation source 30 along a plane perpendicular to the axial direction of the air duct 40 is circular or approximately circular. In Figure 9 Example A, the number of radiation sources 30 is single, and a single radiation source 30 is arranged in the air duct 40. In Figure 9 Example B, the number of radiation sources 30 is two, and the two radiation sources 30 are radially dispersed and arranged in the air duct 40. In Figure 9 Example C, the number of radiation sources 30 is three, and the three radiation sources 30 are triangularly dispersed and arranged in the air duct 40. In Figure 9 Example D, the number of radiation sources 30 is four, and the four radiation sources 30 are squarely dispersed and arranged in the air duct 40. It can be understood that the number of radiation sources 30 can also be more than four, and they are dispersed and arranged in the air duct 40. No specific limitation is made here.

[0081] In Figure 10 、 Figure 11In the example of A-11D, the radiation source 30 has an annular or sector shape in a plane perpendicular to the axial direction of the air duct 40. In Figure 11 In the example of A, the number of radiation sources 30 is two, and each radiation source 30 is annular. The two radiation sources 30 are concentrically arranged in the air duct 40 to form two layers of annular radiation sources 30. In Figure 11 In the example of B, the number of radiation sources 30 is two, and each radiation source 30 is basically in a 180-degree sector shape. The two radiation sources 30 are arranged to be basically annular. In Figure 11 In the example of C, the number of radiation sources 30 is three, and each radiation source 30 is basically in a 120-degree sector shape. The three radiation sources 30 are arranged to be basically annular. In Figure 11 In the example of D, the number of radiation sources 30 is four, and each radiation source 30 is basically in a 90-degree sector shape. The four radiation sources 30 are arranged to be basically annular. It can be understood that the number of radiation sources 30 can also be single or more than four, and they are dispersedly arranged in the air duct 40. In addition, in other embodiments, among multiple radiation sources 30, the sector arc of each radiation source 30 can be different. No specific limitation is made here.

[0082] In other embodiments, it can also be any combination of circular radiation sources 30, annular radiation sources 30, and sector radiation sources 30 dispersedly arranged in the air duct 40.

[0083] In one embodiment, the number of radiation sources 30 is multiple, and the multiple radiation sources 30 are dispersedly arranged in the air duct 40.

[0084] In this way, the multiple radiation sources 30 dispersedly arranged in the air duct 40 can avoid the phenomenon that the heat is too concentrated and the local part of the radiation source 30 or the air duct 40 overheats.

[0085] Specifically, please refer to Figure 12 and Figure 13 A, an air duct 40 is provided with an air flow outlet 404, and the multiple dispersedly arranged radiation sources 30 can be star-shaped and placed in the air flow outlet 404 of the air duct 40.

[0086] In one embodiment, the air duct 40 is provided with multiple air flow outlets 404, and the radiation sources 30 are arranged between adjacent air flow outlets 404, as Figure 13 shown in B.

[0087] Specifically, it can be that an air duct 40 is provided with multiple air flow outlets 404, and the multiple dispersedly arranged radiation sources 30 can be star-shaped and placed in the air duct 40. It can also be that there are multiple air ducts 40, and each air duct 40 is provided with an air flow outlet 404. The multiple air flow outlets 404 can be star-shaped and embedded in the gaps between the multiple radiation sources 30. It can also be a hybrid arrangement of the above two, and no specific limitation is made here.

[0088] In one embodiment, please refer to Figure 8 , Figure 10 and Figure 12 , the drying device 100 further includes a separator 50 disposed in the air duct 40. In this way, the separator 50 can block a part of the radiation source 30, and the blocked part of the radiation source 30 is not blown by the airflow in the air duct 40. This part can be regarded as the first part and can be considered to be located outside the air duct 40.

[0089] Specifically, the separator 50 can accommodate the radiation source 30. In one example, the blocked part of the radiation source 30 can be at least one of a part of the outer wall of the reflector cup 302 and the base 310 of the reflector cup 302. The outer wall of the separator 50 can be configured in the form of a wind guide member. For example, the outer wall of the separator 50 is configured to be streamlined to reduce wind noise and wind resistance. Further, a heat dissipation member (not shown in the figure) is provided on the outer wall of the separator 50. In this way, the heat dissipation efficiency can be improved. Specifically, the heat dissipation member can include one or any combination of heat dissipation fins, heat dissipation air ducts, heat pipes, and heat dissipation plates.

[0090] In one embodiment, the separator 50 is disposed at the air outlet 404 of the air duct 40. In this way, the separator 50 disposed at the air outlet 404 has less adverse effect on the airflow in the air duct 40.

[0091] In one embodiment, the separator 50 is coupled to at least one of the radiation source 30, the housing 10, and the air duct 40.

[0092] Specifically, the coupling method can be detachably connected or fixedly connected.

[0093] In one embodiment, the airflow flows in the channel formed by the inner wall of the air duct 40 and the outer wall of the separator 50. In this way, the airflow can flow out of the drying device 100 through the channel and can take away the heat of the separator 50.

[0094] Specifically, the separator 50 may absorb the heat generated when the radiation source 30 operates and heat up. When the airflow passes through the channel, it can dissipate heat from the separator 50, ensuring the service life of the separator 50.

[0095] In one embodiment, a part of the radiation source 30 is accommodated in the separator 50. In this way, the separator 50 can block a part of the radiation source 30 and prevent it from being blown by the airflow in the air duct 40.

[0096] Specifically, the radiation source 30 may include a reflector cup 302. A part of the outer wall of the reflector cup 302 can be accommodated within the spacer 50. This part can serve as the first part to prevent the heat of the radiation source 30 from being excessively dissipated due to the direct blowing of the air flow in the air duct 40, thereby ensuring that the radiation source 30 remains at an appropriate operating temperature during operation.

[0097] In one embodiment, the radiation source 30 is in coplanar contact with the spacer 50. In this way, the adverse effect of the connection formed between the radiation source 30 and the spacer 50 on the air flow can be reduced.

[0098] Specifically, the coplanar contact enables the connection formed between the radiation source 30 and the spacer 50 to have a smooth transition. When the air flow passes through the connection, it can flow smoothly, reducing wind noise and wind resistance. In one example, the connection can form a streamlined surface.

[0099] In one embodiment, please refer to Figure 8 、 Figure 10 and Figure 12 , the inner wall of the spacer 50 and the outer wall of the radiation source 30 enclose a cavity 60. The first part includes the outer wall part of the radiation source 30 that encloses the cavity 60. Specifically, the outer wall part of the radiation source 30 can be a part of the outer wall of the reflector cup 302, or the base 310 of the reflector cup 302, or a part of the base 310, or include a part of the outer wall of the reflector cup 302 and the base 310 of the reflector cup 302, or include a part of the outer wall of the reflector cup 302 and a part of the base 310 of the reflector cup 302. That is to say, the outer wall part of the radiation source 30 that encloses the cavity 60 is blocked by the spacer 50, preventing the direct blowing of the air flow in the air duct 40.

[0100] In one embodiment, via the spacer 50, the air duct 40 exchanges heat with the radiation source 30 by at least one of heat conduction and heat convection. In this way, the heat of the radiation source 30 can be appropriately dissipated, without the temperature being too high or too low during operation.

[0101] In one embodiment, the drying device 100 further includes a control board (not shown in the figure), and the control board is disposed within the spacer 50. In this way, the space within the housing 10 can be fully utilized, making the structure of the drying device 100 compact.

[0102] Specifically, the control board can be placed in the cavity 60. The control board may include a circuit board and various components mounted on the circuit board, such as a processor, a controller, a power supply, a switching circuit, a detection circuit, etc. The control board can be electrically connected to the radiation source 30, the motor 20, and other electrical components, such as a lighting lamp, an indicator light, a sensor, etc. The control board is used to control the operation of the drying device 100, including but not limited to controlling the operation mode, operation duration, motor speed, power of the radiation source 30, etc. of the drying device 100.

[0103] In one embodiment, the drying device 100 includes a power supply, a part of the power supply is disposed within the spacer 50, and the power supply is electrically connected to at least one of the radiation source 30 and the control board. Thus, the heat of the power supply can be dissipated through the spacer 50, and the power supply can supply power to at least one of the radiation source 30 and the control board.

[0104] Specifically, the power supply may include one or more batteries, and the batteries may be rechargeable batteries. The power supply may be a dedicated power supply for the radiation source 30, or a dedicated power supply for the control board, or may supply power to both the radiation source 30 and the control board simultaneously. The control board may be connected with a switch, and by controlling the on / off of the switch, it is possible to control whether the power supply supplies power to the radiation source 30.

[0105] In one embodiment, along the direction of air flow, the motor 20 is located downstream of at least a part of the power supply. Thus, the heat generated when the power supply operates is carried away by the wind of the motor, ensuring the normal operation of the power supply.

[0106] Please refer Figure 1 , the power supply 70 may include multiple batteries. It may be that the motor 20 is located downstream of all the batteries, or the motor 20 may be between multiple batteries. For example, batteries are placed in the lower part of the handle 104, the motor 20 is placed in the middle part, and batteries are placed in the upper part, or the lower half of the handle is the battery, the upper half is the motor 20, and there are also batteries within the body 102. In this way, the airflow (wind) generated by the motor 20 can flow through at least a part of the power supply, so that the part of the power supply blown by the wind can be cooled.

[0107] In addition, generally, the power supply 70 is heavier than the motor 20. The motor 20 being located downstream of at least a part of the power supply 70 can prevent the drying device 100 from being top-heavy. Further, it can also reduce the air flow resistance generated by the motor 20.

[0108] In one embodiment, the drying device 100 includes a safety sensor (not shown in the figure), the safety sensor is electrically connected to the power supply 70 and the radiation source 30, and the safety sensor is used to cut off the power supply of the power supply 70 when the temperature of the radiation source 30 is greater than the set temperature. Thus, the safety of the drying device 100 can be improved.

[0109] Specifically, the temperature when the radiation source 30 operates may reach several hundred degrees or even over a thousand degrees. If the radiation source 30 has an abnormal temperature rise due to abnormal operation, it may cause a scalding accident to the user. Therefore, by setting the safety sensor, when the temperature of the radiation source 30 is greater than the set temperature, the power supply of the power supply 70 can be cut off, so that the radiation source 30 stops working and the temperature drops, avoiding safety accidents and improving the safety of the drying device 100. The specific value of the set temperature can be set according to requirements and is not specifically limited herein.

[0110] In one example, the safety sensor may include a thermostat. The parameter selection of the thermostat can be determined according to the value of the set temperature.

[0111] In one embodiment, the radiation source 30 is disposed on the longitudinal axis L of the air duct 40. In this way, the heat dissipation efficiency around the radiation source 30 by the air flow is basically the same, avoiding the situation of high local temperature and low local temperature of the radiation source 30, which is beneficial to maintaining the working efficiency of the radiation source 30 and the stability of the intensity of the infrared radiation.

[0112] In one example, the number of the radiation sources 30 is single, and the single radiation source 30 is disposed on the longitudinal axis L of the air duct 40. In one example, the number of the radiation sources 30 is multiple, and the multiple radiation sources 30 are circumferentially disposed around the longitudinal axis L of the air duct 40.

[0113] The radiation source 30 may include a reflector cup 302 and a light-emitting member 304. The light-emitting member 304 is located inside the reflector cup 302. The first part includes a part of the outer wall of the reflector cup 302, and the second part includes another part of the outer wall of the reflector cup 302. For example, in Figure 1 it, the second part may be a part of the outer wall of the reflector cup 302 that is directly in contact with the outer wall of the air duct 40, and the first part may be another part of the outer wall of the reflector cup 302 that is connected to the outer wall of the air duct 40 through the second part. In other embodiments, the second part may include a part of the base 310 of the reflector cup 302, and a part of the base 310 is directly in contact with the outer wall of the air duct 40. It can be understood that in other embodiments, the first part may include the base 310 of the reflector cup 302, or a part of the base 310.

[0114] Preferably, the surface area of the first part is larger than the surface area of the second part. In this way, the radiation source 30 can be properly cooled and the appropriate working temperature of the radiation source 30 can be maintained.

[0115] Specifically, the second part exchanges heat with the air duct 40, and the heat exchange method may include at least one of heat conduction and heat convection. By simply setting the surface area, most of the heat of the radiation source 30 can maintain the working temperature of the radiation source 30, while the extra heat is dissipated through the heat exchange between the second part and the air duct 40.

[0116] In one embodiment, the drying device 100 includes a heat dissipation structure 80, and the radiation source 30 transfers heat through the heat dissipation structure 80. The heat dissipation structure 80 is disposed between the radiation source 30 and other components of the drying device 100. In this way, the radiation source 30 can be properly cooled.

[0117] Specifically, the heat dissipation structure 80 can be formed by coupling the air duct 40 with the radiation source 30. In one embodiment, the radiation source 30 is coupled with the air duct 40. The coupling includes the contact between the radiation source 30 and the air duct 40. For example, the radiation source 30 may include a reflector cup 302, and the coupling may include the contact between the outer wall of the reflector cup 302 and the outer wall of the air duct 40, and the contacting portion can form the heat dissipation structure 80. The coupling may also include the contact between the base 310 of the reflector cup 302 and the outer wall of the air duct 40, and the contacting portion can form the heat dissipation structure 80. The coupling may also include that the heat dissipation structure 80 extends into the air duct 40, and the heat dissipation structure 80 can be connected to the radiation source 30. The heat transfer surface area in the heat dissipation structure 80 is determined based on the heat dissipation efficiency of the air duct 40 for the radiation source 30 and the normal operating temperature of the radiation source 30. In this way, the radiation source 30 can be accurately cooled. Specifically, the heat transfer surface area in the heat dissipation structure 80 can be determined by performing simulation tests or experiments on the drying device 100.

[0118] Other components of the drying device 100 may include components such as the air duct 40 and the housing.

[0119] In one embodiment, the heat dissipation structure 80 is integrally formed and connected to the radiation source 30 and / or other components of the drying device 100. In this way, the heat dissipation effect can be improved.

[0120] Specifically, integrally formed connection means that there is no connection gap, or the connection gap is small and few, so that heat can be dissipated in time, and thus the heat dissipation effect can be improved. Other components of the drying device 100 may include at least one of the motor 20, the air duct 40, and the housing.

[0121] In one embodiment, the heat dissipation structure 80 is connected to the radiation source 30 and / or other components of the drying device 100 through a first fixing member. In this way, the heat dissipation structure 80 can be fixed to the radiation source 30 and / or other components of the drying device 100.

[0122] Specifically, in one example, the first fixing member may include a screw, and the heat dissipation structure 80 is fixed to the radiation source 30 and / or other components of the drying device 100 by the screw. In one example, the first fixing member can also be a fixing member formed by welding. In one example, the first fixing member may include a buckle, and corresponding holes are provided at corresponding positions of the heat dissipation structure 80 and the radiation source 30 and / or other components of the drying device 100, and the buckle is connected with the holes to fixedly connect the heat dissipation structure 80 to the radiation source 30 and / or other components of the drying device 100. It can be understood that the first fixing member may also include other forms of fixing members, which are not exemplified one by one here.

[0123] In one embodiment, the radiation source 30 and / or other components of the drying device 100 are limited by the second fixing member to the heat dissipation structure 80. In this way, the heat dissipation structure 80 can be limited to prevent displacement of the heat dissipation structure 80, and at the same time, the installation of the heat dissipation structure 80 is also facilitated.

[0124] Specifically, the second fixing member can be a limiting groove, or a limiting post, or a combination of both. By using the second fixing member to limit the heat dissipation structure 80, the heat dissipation structure 80 can be positioned during installation, which is easy to install and fix.

[0125] In Figure 1 、 Figure 4 and Figure 6 In the embodiment shown, the second part is in direct contact with the outer wall of the air duct 40. Specifically, in one example, a part of the outer wall of the reflector cup 302 is in direct contact with the outer wall of the air duct 40 for heat exchange, and the contacting part can form a heat dissipation structure or a part of the heat dissipation structure. Specifically, it can be that a part of the outer wall of the reflector cup 302 forms a part of the outer wall of the air duct 40 to be in direct contact with another part of the outer wall of the air duct 40. That is to say, this part of the outer wall of the reflector cup 302 serves as both a part of the outer wall of the reflector cup 302 and a part of the outer wall of the air duct 40. Additionally, it can also be that a part of the outer wall of the reflector cup 302 is located outside the outer wall of the air duct 40 and is in direct contact with the outer wall of the air duct 40.

[0126] In Figures 14 - 16 In the embodiment shown, the second part is in contact with the air duct 40 through an additional heat dissipation structure 80 for heat exchange. Specifically, the heat dissipation structure 80 can include metals conducive to heat dissipation (such as aluminum, copper, aluminum alloy, copper alloy, etc.), carbon fiber materials, etc. The specific form of the heat dissipation structure 80 is not limited. For example, it can be one or any combination of heat dissipation fins, heat dissipation plates, heat dissipation air ducts, and heat pipes. The heat dissipation structure 80 can transfer heat to the radiation source by at least one of heat conduction and heat convection.

[0127] Specifically, in one embodiment, the heat dissipation structure 80 can be connected between the radiation source and the air duct. In one example, the heat dissipation structure can be connected between the second part and the air duct. The heat dissipation structure can transfer the heat of the radiation source to the air duct by at least one of heat conduction and heat convection, and the heat is carried away by the air flow in the air duct. The heat dissipation structure can also be formed on the outer wall of the reflector cup of the radiation source to transfer the heat of the radiation source to other spaces inside the housing. The housing can be provided with heat dissipation holes, and the heat of the radiation source transferred through the heat dissipation structure can be dissipated to the external environment of the drying device through the heat dissipation holes. Of course, the heat dissipation structure can also be connected to the inner wall of the housing and the radiation source to transfer the heat of the radiation source to the housing. It should be noted that in this case, it should be avoided that the housing temperature rises too high and causes trouble to the user.

[0128] In one embodiment, the heat dissipation structure 80 can be connected to the radiation source and the outer wall of the air duct 40. That is to say, a heat dissipation structure 80 is provided between the air duct 40 and the second part. In one example, the second part is a part of the outer wall of the reflector cup 302, and the heat dissipation structure 80 connects this part of the outer wall of the reflector cup 302 to the outer wall of the air duct 40.

[0129] In one embodiment, please refer to Figure 14 and Figure 15 , a part of the heat dissipation structure 80 is located inside the air duct 40. In one example, the second part is a part of the outer wall of the reflector cup 302. One end of the heat dissipation structure 80 is connected to this part of the outer wall of the reflector cup 302, and the other end of the heat dissipation structure 80 extends into the air duct 40. The air flow inside the air duct 40 directly blows to this end of the heat dissipation structure 80. Further, the part of the heat dissipation structure 80 located inside the air duct 40 can be formed into a first air guiding member. In this way, the adverse effect of this part of the heat dissipation structure 80 on the air flow can be reduced, and wind noise, wind resistance, etc. can be reduced.

[0130] Specifically, the first air guiding member can have a streamlined windward surface, and the air flow can flow smoothly over this windward surface. Further, the first air guiding member is integrally connected to a second air guiding member inside the air duct 40. In this way, on the one hand, the second air guiding member inside the air duct 40 can guide the air flow, and on the other hand, the heat exchange efficiency can also be increased. The second air guiding member can be a guiding strip and / or a guiding groove formed on the inner wall of the air duct 40, and the second air guiding member can also be set to be streamlined. Through the setting of the second air guiding member, the air flow can be rectified and the direction can be adjusted. The first air guiding member is integrally connected to the second air guiding member inside the air duct 40, so that the air flow passes through the first air guiding member and the second air guiding member seamlessly, further reducing wind noise and wind resistance, etc.

[0131] In one embodiment, the second air guiding member is located at the air outlet of the air duct. In this way, the second air guiding member can be provided at the position where the air flow is about to leave the drying device, which can further reduce wind noise and can guide the air flow, thereby further improving the user experience.

[0132] Specifically, the second air guiding member can be a guiding strip and / or a guiding groove formed on the inner wall of the air duct 40. The second air guiding member can also be a detachable nozzle, comb or curler, etc., or any combination of a guiding strip, a guiding groove, a nozzle, a comb and a curler.

[0133] In one embodiment, the second air guiding member is a guide vane of the motor. In this way, when the motor rotates, it can drive the guide vane to rotate, thereby increasing the wind speed and accelerating the drying of the object.

[0134] Specifically, the guide vane can be connected to the output shaft of the motor through a transmission mechanism (such as gears, worm gears, worm shafts, etc.). The transmission mechanism has a certain reduction ratio, which can enable the guide vane to rotate at a desired speed.

[0135] In one embodiment, the heat dissipation structure 80 forms a part of the outer wall of the air duct 40. That is to say, a part of the outer wall of the air duct 40 can form a heat exchange between the heat dissipation structure 80 and a second part (such as a part of the outer wall of the reflector cup 302).

[0136] In one embodiment, the heat dissipation structure 80 forms a part of the inner wall of the air duct 40. That is to say, a part of the inner wall of the air duct 40 can form the heat dissipation structure 80, and through a connection structure, it passes through the wall of the air duct 40 to exchange heat with a second part (such as a part of the outer wall of the reflector cup 302).

[0137] In the embodiment of the present application, the outer wall and the inner wall of the air duct 40 can be two surfaces of one part, or one surface of each of two parts, and the two parts are connected to form the air duct 40. No specific limitation is made here.

[0138] In one embodiment, the heat dissipation structure includes a contact part between the radiation source and the wall of the air duct.

[0139] Specifically, the radiation source 20 includes a second part, and a contact part of the heat dissipation structure 80 is provided between the air duct 40 and the second part. In one example, the second part is a part of the outer wall of the reflector cup 302, and the contact part of the heat dissipation structure 80 connects this part of the outer wall of the reflector cup 302 to the outer wall of the air duct 40. The wall of the air duct 40 can also include the inner wall of the air duct 40.

[0140] In one embodiment, the cross-sectional shape of the contact part is the same as the part of the wall of the air duct 40 that is contacted. In this way, the contact part can be more closely attached to the wall of the air duct 40, improving the heat exchange efficiency.

[0141] Specifically, in one example, the outer wall of the air duct 40 is arc-shaped, the contact part is connected to the outer wall of the air duct, and along the radial direction of the air duct 40, the cross-sectional shape of the contact part is arc-shaped and the same as the shape of the outer wall of the air duct 40. In one example, the outer wall of the air duct 40 is planar, the contact part is connected to the outer wall of the air duct 40, and along the radial direction of the air duct 40, the cross-sectional shape of the contact part is planar and the same as the shape of the outer wall of the air duct 40. The cross-sectional shape of the contact part can also be other shapes, and no further examples are given here.

[0142] In one embodiment, the contact portion further includes an extension portion extending into the air duct 40. In one example, the second portion is a part of the outer wall of the reflector cup 302. One end of the contact portion of the heat dissipation structure 80 is connected to this part of the outer wall of the reflector cup 302, and the other end of the contact portion of the heat dissipation structure 80 extends into the air duct 40, and the airflow in the air duct 40 directly blows to this end of the contact portion. Further, the extension portion guides the flow direction of the airflow in the air duct 40. In this way, the adverse effects of the extension portion on the airflow can be reduced, and wind noise, wind resistance, etc. can be reduced.

[0143] Specifically, the extension portion may have a streamlined windward surface, and the airflow can flow smoothly over this windward surface.

[0144] In one embodiment, the contact portion of the heat dissipation structure 80 forms a part of the outer wall of the air duct 40. That is to say, a part of the outer wall of the air duct 40 can form the contact portion of the heat dissipation structure 80 to exchange heat with the second portion (such as a part of the outer wall of the reflector cup 302).

[0145] In one embodiment, the contact portion of the heat dissipation structure 80 may also form a part of the inner wall of the air duct 40. That is to say, a part of the inner wall of the air duct 40 can form the contact portion of the heat dissipation structure 80 and exchange heat with the second portion (such as a part of the outer wall of the reflector cup 302) through a connection structure passing through the wall of the air duct 40.

[0146] It can be understood that in other embodiments, the heat dissipation structure 80 may further include other parts outside the contact portion. It may be that one end of this other part can be connected to the radiation source 30 and the other end is suspended. It may also be that one end of this other part can be connected to the radiation source 30 and the other end can be connected to other components of the drying device 100, such as the housing 10.

[0147] In one embodiment, please refer to Figure 17 , the heat dissipation structure 80 includes a first through hole 108 provided on the wall of the radiation source 30 for guiding the heat dissipation airflow into the interior of the radiation source 30. In this way, the heat dissipation structure 80 can guide the heat dissipation airflow into the interior of the radiation source 30 through the first through hole 108, and can adaptively dissipate heat from the high-temperature area inside the radiation source 30.

[0148] Specifically, the first through hole 108 can introduce the airflow with a lower temperature into the interior of the radiation source 30. When the radiation source 30 works, the temperature of the light-emitting component 304 is relatively high, so that the internal temperature of the radiation source 30 is relatively high. If too much heat cannot be dissipated in time, the working life of the radiation source 30 will be shortened. The airflow with a lower temperature is introduced into the interior of the radiation source 30 through the first through hole 108, and can adaptively dissipate heat from the high-temperature area. It should be noted that the high-temperature area of the radiation source 30 can be determined in advance through simulation or testing.

[0149] In one embodiment, the first through hole 108 is provided on the wall of the reflector cup 302 of the radiation source 30. In this way, the airflow at a lower temperature can be directly guided to the light-emitting component 304 through the first through hole 108 on the wall of the reflector cup 302, and can adaptively dissipate heat from the light-emitting component 304.

[0150] Generally speaking, for the radiation source 30, when the radiation source 30 is operating, the temperature of the light-emitting component 304 is basically the highest. Therefore, too high a temperature has the greatest impact on the working life of the light-emitting component 304, and the temperature rise in the reflector cup 302 is also the most obvious. By providing the first through hole 108 on the wall of the reflector cup 302, the heat dissipation airflow can be introduced to the part of the light-emitting component 304 where temperature reduction is desired, avoiding too high a temperature and affecting the working life of the light-emitting component 304.

[0151] In one embodiment, the first through hole 108 extends into the part of the heat dissipation structure 80 between the radiation source 30 and the wall of the air duct 40. In this way, the airflow in the air duct 40 can enter the interior of the radiation source 30 through the first through hole 108.

[0152] Specifically, the first through hole 108 extends to the contact part between the radiation source 30 and the air duct 40. The wall of the air duct 40 may be provided with an opening, and the opening is communicated with the first through hole 108. The airflow in the air duct 40 (which can be a naturally diffused airflow or an airflow accelerated when the motor 20 is operating) can enter the interior of the radiation source 30 through the opening and the first through hole 108 to dissipate heat from the high-temperature area inside the radiation source 30 as expected.

[0153] In one embodiment, the drying device 100 further includes a first connection part connected to the radiation source 30, and the first through hole 108 extends into the first connection part. In this way, the radiation source 30 can be appropriately cooled.

[0154] Specifically, the first connection part can be a non-contact part between the radiation source 30 and the air duct 40. The first connection part can be a connection part for fixing the radiation source 30. For example, the first connection part can be a connection part for fixedly connecting the radiation source 30 and the housing 10, the first connection part can also be a connection part for fixedly connecting the radiation source 30 and the motor 20, and the first connection part can also be a connection part for fixedly connecting the radiation source 30 and other components of the drying device 100, which is not specifically limited here. The heat dissipation airflow can enter the first through hole 108 by natural diffusion.

[0155] In one embodiment, the first connection part has a heat dissipation function. In this way, the heat dissipation efficiency of the first connection part is further improved.

[0156] Specifically, the first connecting part with heat dissipation function can be made of heat dissipation materials, such as metals, carbon fiber, etc., and / or the surface of the first connecting part is coated with a heat dissipation coating, and / or the first connecting part is provided with a heat dissipation structure. For example, the heat dissipation structure may include one or any combination of heat dissipation fins, a heat dissipation air duct 40, heat pipes, and heat dissipation plates.

[0157] In one embodiment, the heat dissipation structure 80 further includes a second through hole 110 provided in the radiation source 30. The heat dissipation air flow flowing in from the first through hole 108 flows out of the radiation source 30 through the second through hole 110. In this way, the heat dissipation efficiency of the radiation is further improved.

[0158] Specifically, the arrangement of the first through hole 108 and the second through hole 110 can enable the low-temperature air flow entering the radiation source 30 to flow out of the inside of the radiation source 30 in time after absorbing heat, so that the low-temperature air flow continuously circulates into the inside of the radiation source 30 to continuously dissipate heat from the inside of the radiation source 30.

[0159] In one embodiment, the radiation source 30 includes a reflector cup 302 and an optical element provided at the opening of the reflector cup 302. The second through hole 110 is opened in the wall of the reflector cup 302 and / or the optical element. In this way, the air flow after absorbing heat can flow out of the radiation source 30 through the wall of the reflector cup 302 and / or the optical element.

[0160] Specifically, when the second through hole 110 is opened at the part where the optical element 90 covers the radiation source 30, the air flow after absorbing heat can be guided to the outside of the drying device 100. When the second through hole 110 is opened in the wall of the reflector cup 302, the air flow after absorbing heat can be guided into the housing 10 and then to the outside of the drying device 100 through the heat dissipation holes in the housing 10.

[0161] In one embodiment, the second through hole 110 is opened in the wall of the reflector cup 302 in contact with the air duct 40 and / or in the wall of the reflector cup 302 not in contact with the air duct 40. In this way, the air flow after absorbing heat can enter the air duct 40 through the wall of the air duct 40 for heat dissipation.

[0162] Specifically, the air flow after absorbing heat flows into the air duct 40 through the second through hole 110. The air flow in the air duct 40 is usually an air flow with a lower temperature and a higher flow rate. In this way, the air flow after absorbing heat can be driven by the air flow with a lower temperature and a faster flow rate in the air duct 40 to flow to the air flow outlet of the air duct 40.

[0163] In one embodiment, the heat dissipation structure 80 includes a third through hole (not shown in the figure). The third through hole communicates with the interiors of at least two radiation sources 30. In this way, the air flow circulates back and forth between at least two radiation sources 30, which can make the internal temperatures of at least two radiation sources 30 relatively average and avoid a large difference in radiation intensity, which may affect the user experience.

[0164] Specifically, at least two radiation sources 30 may include two adjacent radiation sources 30 or two non - adjacent radiation sources 30. Two adjacent radiation sources 30 may be connected together to form a connection point. The third through - hole may extend at the connection point, or two adjacent radiation sources 30 may be connected through an additional second connection part, and the third through - hole may further extend into the second connection part. Two non - adjacent radiation sources 30 may be connected through the second connection part, and the third through - hole may extend into the second connection part. Among at least two radiation sources 30 communicated by the third through - hole, the air flow in the radiation source 30 with a higher temperature forms a convection with the air flow in the radiation source 30 with a lower temperature through the third through - hole, so that the internal temperatures of at least two radiation sources 30 tend to be consistent, ensuring that the operating states of at least two radiation sources 30 are basically the same.

[0165] In one embodiment, the radiation source 30 includes a reflector cup 302 and an optical element disposed at the opening of the reflector cup 302, and the third through - hole is further opened in the wall of the reflector cup 302 and / or the optical element. In this way, the third through - hole can be realized by opening holes in the wall of the reflector cup 302 and / or the optical element.

[0166] In one embodiment, the heat - dissipating air flow comes from inside the air duct 40 and / or outside the housing 10.

[0167] Specifically, the air flow inside the air duct 40 can be guided to the radiation source 30 through the through - hole features of the above - mentioned embodiments to form a heat - dissipating air flow. For the air flow outside the housing 10, an air inlet hole can be opened at a position on the housing 10 that is far from the radiation source 30, and a through - hole communicating with the air inlet hole is opened in the radiation source 30 (such as the through - hole features of the radiation source 30 and / or the through - hole features of the heat - dissipating structure 80 in the above - mentioned embodiments) to guide the air flow with a lower temperature outside the drying device 100 to the radiation source 30. Further, a fan can be installed at the air inlet hole to accelerate the flow rate of the external low - temperature air flow, further improving the heat - dissipating efficiency.

[0168] In one embodiment, the heat - dissipating structure 80 includes a fourth through - hole 112, and the fourth through - hole 112 is formed by a through - hole communicating with the inside of the air duct 40. The fourth through - hole 112 is used to guide the heat - dissipating air flow to the radiation source 30. In this way, the air flow inside the air duct 40 can be guided to the radiation source 30.

[0169] Specifically, the fourth through - hole 112 may be a through - hole opened on the wall of the air duct 40, and the air flow inside the air duct 40 is led out to form a heat - dissipating air flow for dissipating heat from the radiation source 30, and can be guided to the outside and / or inside of the radiation source 30 through the through - hole features of the above - mentioned embodiments.

[0170] In one embodiment, the fourth through - hole 112 may also be a through - hole opened on the wall of the separator 50, and the wall of the separator 50 can form part of the inner wall of the air duct 40.

[0171] In one embodiment, the heat dissipation structure 80 further includes a fifth through hole 114 provided in other components of the drying device 100, and the heat dissipation air flow passing through the fourth through hole 112 can flow out from the fifth through hole 114. In this way, an air flow cycle can be formed, improving the heat dissipation efficiency.

[0172] Specifically, other components of the drying device 100 may include a housing 10, a motor 20, and an air duct 40. The heat dissipation air flow flowing into the fourth through hole 112 can be guided to the housing 10, the motor 20, and / or the air duct 40 to form an air flow cycle.

[0173] In one embodiment, the radiation source 30 includes a reflector cup 302 and an optical element provided at the opening of the reflector cup 302, and the fifth through hole 114 is opened in a portion of the radiation source 30 not covered by the optical element 90. In this way, the heat dissipation air flow flowing into the fourth through hole 112 can flow out of the drying device 100 through the fifth through hole 114 of the optical element.

[0174] Specifically, the area of the optical element may be larger than the opening area of the reflector cup 302. The optical element includes a portion that does not cover the opening of the reflector cup 302, and the fifth through hole 114 is opened in this portion, so that the heat dissipation air flow with a higher temperature inside the drying device 100 can flow out of the drying device 100 through the fifth through hole 114.

[0175] In one embodiment, please refer Figure 17 , the fifth through hole 114 is opened on the housing 10 and / or on the wall of the air duct 40. In this way, the heat dissipation air flow can flow out of the drying device 100 or flow into the air duct 40.

[0176] Specifically, the external environment temperature of the drying device 100 is relatively low. After the air flow flowing into the fourth through hole 112 absorbs heat, it can flow out of the drying device 100 through the fifth through hole 114 opened on the housing 10, realizing an air flow cycle.

[0177] In one embodiment, the drying device 100 includes a third connecting portion connecting the air duct 40 and the radiation source 30, and the fourth through hole 112 extends into the third connecting portion. In this way, the radiation source 30 can be appropriately cooled.

[0178] Specifically, the third connecting portion can be a connecting portion fixedly connecting the radiation source 30 and the air duct 40, or a connecting portion detachably connecting at least one of the radiation source 30 and the air duct 40. The air flow in the air duct 40 enters the third connecting portion through the fourth through hole 112 to dissipate heat from the third connecting portion, and the third connecting portion is connected to the radiation source 30, so that the heat of the radiation source 30 is taken away by the air flow in the air duct 40, realizing the heat dissipation of the radiation source 30.

[0179] In one embodiment, the third connecting portion has a heat dissipation function. Thus, the heat dissipation efficiency of the third connecting portion is further improved.

[0180] Specifically, the third connecting portion with a heat dissipation function can be made of a heat dissipation material, for example, metal, carbon fiber, etc., and / or the surface of the third connecting portion is coated with a heat dissipation coating, and / or the third connecting portion is provided with a heat dissipation structure, for example, the heat dissipation structure may include one or any combination of heat dissipation fins, a heat dissipation air duct 40, a heat pipe, and a heat dissipation plate.

[0181] In one embodiment, the difference in the coefficient of thermal expansion between the heat dissipation structure 80 and the radiation source 30 and / or other components of the drying device 100 is within a preset range. Thus, the coefficient of thermal expansion of the heat dissipation structure 80 is close to that of the radiation source 30 and / or the drying device 100, avoiding deformation of the component with a small coefficient of thermal expansion when heated due to a large difference in the coefficient of thermal expansion.

[0182] Specifically, it can be that the difference in the coefficient of thermal expansion between the heat dissipation structure 80 and the radiation source 30 is within a preset range, it can be that the difference in the coefficient of thermal expansion between the heat dissipation structure 80 and other components of the drying device 100 is within a preset range, and it can also be that the difference in the coefficient of thermal expansion between the heat dissipation structure 80 and the radiation source 30 and other components of the drying device 100 is within a preset range. The preset range can be calibrated in advance.

[0183] In one embodiment, the heat dissipation structure 80 and the radiation source 30 and / or other components of the drying device 100 are made of the same material. Thus, the coefficient of thermal expansion of the heat dissipation structure 80 can be basically the same as that of the radiation source 30 and / or the drying device 100, avoiding deformation of the component with a small coefficient of thermal expansion when heated due to a large difference in the coefficient of thermal expansion.

[0184] In one example, the heat dissipation structure 80, the reflector cup 302 of the radiation source 30, and the housing 10 are all made of metal. In another example, the heat dissipation structure 80, the reflector cup 302 of the radiation source 30, and the housing 10 are all made of carbon fiber.

[0185] In one embodiment, please refer to Figure 18 A-18D, Figure 19 A-19D, Figure 20 A-20D and Figure 21 A-21D, the overall air duct 40 and the overall radiation source 30 are integrally formed and connected. Thus, the overall structure formed by the air duct 40 and the radiation source 30 is light in weight, high in connection strength, and high in heat transfer efficiency.

[0186] Specifically, the air duct 40 can be made of heat-dissipating materials (such as metal, carbon fiber, etc.), and the reflector cup 302 of the radiation source 30 can be made of heat-dissipating materials (such as metal, carbon fiber, etc.). The two are integrally formed and connected by die-casting or other methods. The integral forming connection eliminates the need for additional connectors, reduces the use of components, and thus reduces the weight. The integral forming connection means that there is no connection gap, or the connection gap is small and few, enabling heat to be transferred in a timely manner, thereby improving the heat dissipation effect and connection strength. The air duct 40 and the radiation source 30 can be installed as a whole into the housing 10.

[0187] Among them, Figure 18 A-18D and Figure 19 A-19D are such that the radiation source 30 is arranged around the air outlet 404 of the air duct 40. Figure 20 A-20D and Figure 21 A-21D are such that the radiation source 30 is surrounded by the air duct 40. It should be noted that although Figure 22 A-37D does not mark the component numbers, the component numbers of the relevant components can be understood with reference to Figure 18 the component numbers shown in A-21D.

[0188] In one embodiment, please refer to Figure 22 A-22D, Figure 23 A-23D, Figure 24 A-24D and Figure 25 A-25D. The overall air duct 40 and a part of the radiation source 30 are integrally formed and connected. Then, the other part of the radiation source 30 and the overall air duct 40 are not integrally formed and connected.

[0189] Specifically, a part of the reflector cup 302 can be integrally formed and connected with the air duct 40 by die-casting or other methods. The other part of the reflector cup 302 can be separately connected to this part of the reflector cup 302. The air duct 40 and the radiation source 30 can be assembled together and then installed into the housing 10.

[0190] In Figure 22 A and Figure 24 A, the reflector cup 302 can be connected up and down by a connector, which is convenient for the installation of the light-emitting component 304 and the reflector cup 302; it can also be connected left and right, so that the part of the reflector cup 302 connected with the light-emitting component 304 can be directly connected to the remaining part of the reflector cup 302.

[0191] In Figure 22 B and Figure 24 B, the heat dissipation structure 80, the air duct 40, and the lower half of the reflector cup 302 can be integrated; or the heat dissipation structure 80 and the base 310 part of the reflector cup 302 can be integrated.

[0192] Among them, Figure 22A-22D and Figure 23 A-23D is that the radiation source 30 is arranged around the air outlet 404 of the air duct 40. Figure 24 A-24D and Figure 25 A-25D is that the radiation source 30 is surrounded by the air duct 40. Moreover, the squares in the figure indicate the connection parts of the two components.

[0193] In one embodiment, please refer to Figure 26 A-26D, Figure 27 A-27D, Figure 28 A-28D and Figure 29 A-29D, a part of the air duct 40 and the overall radiation source 30 are integrally formed and connected. Then, the other part of the air duct 40 and the overall radiation source 30 are not integrally formed and connected.

[0194] Specifically, the reflector cup 302 can be integrally formed and connected with a part of the air duct 40 by die-casting or other means. The other part of the air duct 40 can be separately connected to this part of the air duct 40. The air duct 40 and the radiation source 30 can be assembled together and then installed into the housing 10.

[0195] Among them, Figure 26 A-26D and Figure 27 A-27D is that the radiation source 30 is arranged around the air outlet 404 of the air duct 40. Figure 28 A-28D and Figure 29 A-29D is that the radiation source 30 is surrounded by the air duct 40. Moreover, the squares in the figure indicate the connection parts of the two components.

[0196] In one embodiment, please refer to Figure 30 A-30D, Figure 31 A-31D, Figure 32 A-32D and Figure 33 A-33D, a part of the air duct 40 and a part of the radiation source 30 are integrally formed and connected. Then, the other part of the radiation source 30 and the other part of the air duct 40 are not integrally formed and connected. The air duct 40 and the radiation source 30 can be assembled together and then installed into the housing 10.

[0197] Specifically, a part of the reflector cup 302 can be integrally formed and connected with a part of the air duct 40 by die-casting or other means. The other part of the reflector cup 302 can be separately connected to this part of the reflector cup 302. The other part of the air duct 40 can be separately connected to this part of the air duct 40. The air duct 40 and the radiation source 30 can be assembled together and then installed into the housing 10.

[0198] In Figure 30 A and Figure 32In A, the opening / lower half of the reflector cup 302 and the front / middle part of the air duct 40 are integrated, or the base 310 / lower half of the reflector cup 302 and the rear / middle part of the air duct 40 can also be integrated.

[0199] Among them, Figure 30 A-30D and Figure 31 A-31D are such that the radiation source 30 is arranged around the air outlet 404 of the air duct 40. Figure 32 A-32D and Figure 33 A-33D are such that the radiation source 30 is surrounded by the air duct 40. And the squares in the figure indicate the connection parts of the two components.

[0200] In one embodiment, please refer to Figure 34 A-34D, Figure 35 A-35D, Figure 36 A-36D and Figure 37 A-37D, where the overall air duct 40 and the overall radiation source 30 are non-integrally formed and connected.

[0201] Specifically, the air duct 40 and the reflector cup 302 can be separately formed, and the outer wall of the air duct 40 can be in direct contact with the outer wall of the reflector cup 302 or be in contact and connected through a heat dissipation structure. After the two are assembled together, they can be installed into the housing 10.

[0202] In Figure 34 A and Figure 36 A, the air duct 40 and the reflector cup 302 are directly connected through an additional connecting piece or both are connected to a third party. In Figure 34 B and Figure 36 B, the air duct 40 and the reflector cup 302 are connected through an additional connecting piece, or / and a heat dissipation structure 80. In Figure 34 C and Figure 36 C, the air duct 40 and the reflector cup 302 are connected through an additional connecting piece, a heat dissipation structure 80, or / and a ventilation pipe.

[0203] Among them, Figure 34 A-34D and Figure 35 A-35D are such that the radiation source 30 is arranged around the air outlet 404 of the air duct 40. Figure 36 A-36D and Figure 37 A-37D are such that the radiation source 30 is surrounded by the air duct 40. And the squares in the figure indicate the connection parts of the two components.

[0204] In one embodiment, please refer to Figure 38 A-38D, Figure 39 A-39D, Figure 40 A-40D and Figure 41In A-41D, the air duct 40 and the radiation source 30 may not be assembled together. Specifically, when installing the air duct 40 and the radiation source 30 in the housing 10, the air duct 40 and the radiation source 30 can be installed into the housing 10 successively or simultaneously.

[0205] In Figure 38 A and Figure 40 A, nothing connects the air duct 40 and the reflector cup 302. In Figure 38 B and Figure 40 B, an opening is made in the air duct 40 for the heat dissipation structure 80 to be inserted, or the heat dissipation structure 80 is in front of the air duct 40. In Figure 38 C and Figure 40 C, an additional connecting member of the reflector cup 302 or / and the heat dissipation structure 80 is inserted into the opening of the air duct 40. In Figure 38 D and Figure 40 D, an additional connecting member of the air duct 40 or / and the heat dissipation structure 80 is inserted into the opening of the reflector cup 302.

[0206] Among them, Figure 38 A-38D and Figure 39 A-39D are such that the radiation source 30 is arranged around the air outlet 404 of the air duct 40. Figure 40 A-40D and Figure 41 A-41D are such that the radiation source 30 is surrounded by the air duct 40. And the squares in the figure indicate the connection parts of the two components.

[0207] In one embodiment, the light-emitting member 304 emits radiation containing an infrared band. Thus, the radiation of the infrared band emitted by the light-emitting member 304 can be used to dry an object, and the drying effect is good.

[0208] Specifically, the radiation of the infrared band may include radiation of the far-infrared band, radiation of the near-infrared band, etc. In one example, the infrared-band radiation emitted by the light-emitting member 304 can cover the infrared spectrum above 0.7 μm. In one example, the wavelength of the infrared radiation emitted by the light-emitting member 304 is in the range of 0.7 μm to 20 μm.

[0209] In another example, the radiation emitted by the light-emitting member 304 can generally cover the visible spectrum from 0.4 μm to 0.7 μm and the infrared spectrum above 0.7 μm.

[0210] In one embodiment, the light-emitting member 304 includes at least one of a halogen lamp, ceramics, graphene, and a light-emitting diode.

[0211] Specifically, examples of ceramics may include positive temperature coefficient (PTC) heaters and metal-ceramic heaters (MCH). The light-emitting element 304 of the ceramic includes a metal heating element buried inside the ceramic, such as tungsten buried inside silicon nitride or silicon carbide. The light-emitting element 304 may be provided in the form of a wire (e.g., a filament). The wire may be patterned (e.g., formed into a helical filament) to increase its length and / or surface area. The light-emitting element 304 may also be provided in the form of a rod. In one example, the light-emitting element 304 may be a silicon nitride rod, a silicon carbide rod, or a carbon fiber rod having a preset diameter and length.

[0212] The light-emitting element 304 may be selected from one of a halogen lamp, ceramics, graphene, and a light-emitting diode, or the light-emitting element 304 may be selected from a combination of two or more of a halogen lamp, ceramics, graphene, and a light-emitting diode. No specific limitation is made herein.

[0213] To have a higher infrared emissivity, it is necessary to raise the temperature of the light-emitting element 304. The temperature of the light-emitting element 304 may be at least 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, or 2000 degrees Celsius (°C). In one example, the temperature of the light-emitting element 304 may be 900 to 1500 degrees Celsius. The central wavelength or wavelength range of the infrared radiation emitted by the light-emitting element 304 may be tunable, e.g., tunable by at least 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, or 10.0 μm. The power density of the radiation emitted from the light-emitting element 304 may be adjusted in different operating modes of the drying device 100 (e.g., rapid drying mode, hair health mode, etc.), e.g., by changing the voltage and / or current supplied to the drying device 100.

[0214] The reflector cup 302 may be configured to adjust the radiation direction emitted from the light-emitting element 304. For example, the reflector cup 302 may be configured to reduce the divergence angle of the reflected radiation beam.

[0215] The reflective surface of the reflector cup 302 may be coated with a coating material having a high reflectivity to the wavelength or wavelength range of the radiation emitted by the light-emitting element 304. For example, the coating material may have a high reflectivity to wavelengths in both the visible spectrum and the infrared spectrum. Materials with high reflectivity can be highly efficient in reflecting radiant energy. Examples of coating materials may include metallic materials and dielectric materials. Metallic materials may include, for example, silver and aluminum. Dielectric coatings may have alternating layers of dielectric materials, such as magnesium fluoride. The reflectivity of the reflective surface provided with the coating may be at least 90% (e.g., 90% of the incident radiation is reflected by the reflective surface of the reflector cup 302), 90.5%, 91%, 91.5%, 92%, 92.5%, 93%, 93.5%, 94%, 94.5%, 95%, 95.5%, 96%, 96.5%, 97%, 97.5%, 98%, 98.5%, 99%, 99.5%, 99.6%, 99.7%, 99.8%, 99.9% or higher. In some instances, the reflectivity of the reflective surface provided with the coating may be approximately 100%, which means that substantially all of the radiation emitted by the light-emitting element 304 can be reflected towards the outside of the drying device 100. Therefore, even if the temperature of the light-emitting element 304 is high, the temperature on the reflective surface of the reflector cup 302 will not substantially increase due to the radiation emitted by the light-emitting element 304.

[0216] In one embodiment, the axial cross-section of the reflective surface of the reflector cup 302 is in the shape of a polynomial curve. In this way, a focus can be formed on the reflective surface, facilitating the guiding of infrared radiation and reducing the divergence angle of the reflected radiation beam.

[0217] Specifically, the shape of the polynomial curve may include shapes such as parabola, ellipse, hyperbola, etc. In one example, the axial cross-section of the reflective surface of the reflector cup 302 is in the shape of a parabola.

[0218] In one embodiment, the light-emitting element 304 is disposed at the focus of the reflective surface of the reflector cup 302. In this way, after the infrared light beam emitted by the light-emitting element 304 is reflected by the reflective surface, it can be emitted from the opening of the reflector cup 302 substantially in parallel, making the directivity of the infrared radiation emitted by the drying device 100 good.

[0219] Specifically, the light-emitting element 304 is disposed at the focus of the reflective surface of the reflector cup 302. After the infrared radiation beam emitted by the light-emitting element 304 at the focus is reflected by the reflective surface of the reflector cup 302, it is emitted from the opening of the reflector cup 302 substantially parallel to each other.

[0220] In other embodiments, the light emitting element 304 may also be placed off the focus of the parabola such that the reflected infrared radiation beam can converge or diverge at a certain distance in front of the drying device 100. The position of the light emitting element 304 in the reflector cup 302 is adjustable. Therefore, the degree of convergence and / or the direction of the output radiation beam can be changed. The shapes of the reflector cup 302 and the light emitting element 304 can be optimized and varied relative to each other to output the desired heating power at the desired position of the drying device 100.

[0221] In addition, a heat insulating material (e.g., fiberglass, mineral wool, cellulose, polyurethane foam or polystyrene) can be inserted between the light emitting element 304 and the reflector cup 302 such that the light emitting element 304 is thermally insulated from the reflector cup 302. Even if the temperature of the light emitting element 304 is high, the thermal insulation can keep the temperature of the reflector cup 302 from increasing. A heat insulating material can also be inserted between the periphery of the optical element and the reflector cup 302 such that the optical element is thermally insulated from the reflector cup 302.

[0222] In one embodiment, please refer to Figure 42 A- Figure 42 B, the radiation source 30 includes an optical element 90 which is disposed at the opening of the reflector cup 302 and is used to filter out or reflect the radiation in non-infrared bands. In this way, only the infrared radiation can be directed to the object to be dried.

[0223] Specifically, the optical element 90 may include a lens, a reflector, a prism, a grating, a beam splitter, a filter or a combination thereof that changes or redirects light. In some embodiments, the optical element 90 may be a lens. In some embodiments, the optical element 90 may be a Fresnel lens.

[0224] The optical element 90 can be made of a material with high infrared transmittance. Examples of materials for the optical element 90 may include oxides (e.g., silicon dioxide), metal fluorides (e.g., barium fluoride), metal sulfides or metal selenides (e.g., zinc sulfide, zinc selenide) and crystals (e.g., crystalline silicon, crystalline germanium). Further, one or both sides of the optical element 90 can be coated with a material that absorbs or reflects the visible spectrum and the ultraviolet spectrum such that only the wavelengths in the infrared range can pass through the optical element 90. The optical element 90 can filter out (e.g., absorb) the radiation not in the infrared spectrum. The infrared transmittance of the optical element 90 can be at least 95% (e.g., 95% of the incident radiation in the infrared spectrum passes through the optical element 90), 95.5%, 96.0%, 96.5%, 97.0%, 97.5%, 98.0%, 98.5%, 99%, 99.1%, 99.2%, 99.3%, 99.4%, 99.5%, 99.6%, 99.7%, 99.8%, 99.9% or higher. In one example, the infrared transmittance of the optical element 90 can be 99%.

[0225] In one example, the light-emitting member 304 can emit radiation with a wavelength ranging from 0.4 μm to 20 μm. The reflector cup 302 can direct all the radiation towards the optical element 90 (e.g., no radiation is absorbed at the reflective surface), and the optical element 90 can filter out any visible spectral wavelengths between 0.4 μm and 0.7 μm from the reflected radiation, so that only the radiation in the infrared spectrum exits the radiation source 30.

[0226] In one embodiment, a limiting rib or groove for fixing the optical element 90 can be provided at the opening of the reflector cup 302 or at the air flow outlet 404 of the air duct 40.

[0227] In one embodiment, the optical element 90 is sealed at the opening of the reflector cup 302. Thus, a relatively sealed internal space can be formed within the reflector cup 302.

[0228] Specifically, the internal space of the reflector cup 302 can be configured to have a certain degree of vacuum. The pressure inside the reflector cup 302 can be less than 0.9 standard atmosphere (atm), 0.8 atm, 0.7 atm, 0.6 atm, 0.5 atm, 0.4 atm, 0.3 atm, 0.2 atm, 0.1 atm, 0.05 atm, 0.01 atm, 0.001 atm, 0.0001 atm or less. In one embodiment, the inside of the reflector cup 302 is in a near-vacuum state. For example, the pressure inside the reflector cup 302 can be about 0.001 atm or less. The vacuum can inhibit the evaporation and / or oxidation of the light-emitting member 304 and extend the life of the radiation source 30. The vacuum can also prevent heat convection or heat conduction between the light-emitting member 304 and the optical element 90 and / or the reflector cup 302.

[0229] In one embodiment, the reflector cup 302 is filled with a protective gas. The protective gas can be a certain amount of non-oxidizing gas (such as an inert gas), while still maintaining a certain level of vacuum to reduce the increase in the temperature of the gas inside the space formed by the inner surfaces of the reflector cup 302 and the optical element 90. Although this temperature increase is very small, it is caused by heat convection and heat conduction. Examples of non-oxidizing gases can include nitrogen (N2), helium (He), argon (Ar), neon (Ne), krypton (Kr), xenon (Xe), radon (Rn), and nitrogen (N2). The presence of the inert gas can further protect the material of the light-emitting member 304 from oxidation and evaporation.

[0230] In Figure 42 the embodiment shown in A, a plurality of radiation sources 30 share one optical element 90, that is, one optical element is provided at the openings of the reflector cups 302 of all the radiation sources. In Figure 42In the embodiment shown in FIG. B, each radiation source is provided with an optical element 90, that is to say, an optical element 90 is provided at the opening of a reflector cup 302.

[0231] In one embodiment, the drying device 100 further includes a control board, and the control board is electrically connected to the radiation source 30 and / or the motor 20. In this way, the control of the drying device 100 can be realized.

[0232] Specifically, the control board may include a circuit board and various components mounted on the circuit board, for example, a processor, a controller, a power supply 70, a switching circuit, a detection circuit, etc. The control board can be electrically connected to the radiation source 30, the motor 20, and other electrical components, such as a lighting lamp, an indicator light, a sensor, etc. The control board is used to control the operation of the drying device 100, including but not limited to controlling the operation mode, operation duration, motor speed, power of the radiation source 30, etc. of the drying device 100.

[0233] In one embodiment, the drying device 100 includes a power supply 70 located in the housing 10. The power supply 70 is electrically connected to the control board, and the control board is electrically connected to the radiation source 30 and the motor 20. In this way, the control board can control the power consumption of the radiation source 30 and the motor 20.

[0234] Specifically, the control board can convert the voltage of the power supply 70 into the voltages corresponding to the radiation source 30 and the motor 20 adapted to the working mode of the drying device 100, so that the radiation source 30 and the motor 20 can work in this working mode. For example, by adjusting the voltage, the radiation power of the radiation source 30, the rotation speed of the motor 20 (i.e., the rotation speed of the fan blade), etc. can be adjusted. Or by turning on and off the power supply 70, the working duration of the radiation source 30 and the motor 20 can be controlled. It can be understood that in other embodiments, the power supply 70, the control board, the radiation source 30, and the motor 20 can also be connected in other ways. In one example, the power supply 70 can be installed in the handle 104.

[0235] In one embodiment, the power supply 70 includes a rechargeable battery. In this way, the drying device 100 can be used without being restricted by the wire harness, improving the user experience.

[0236] Specifically, the rechargeable battery can be a lithium-ion battery or other rechargeable batteries. The rechargeable battery can be one or more. Multiple batteries can be connected in series, in parallel, or in series-parallel. No specific limitation is made here. In addition, for the convenience of charging the battery, the main body 102 or the handle 104 can be provided with a charging interface. It can be understood that the charging interface can be a wired charging interface or a wireless charging interface, and no specific limitation is made here. In addition, for the convenience of removing the battery, a battery cover can be provided on the handle 104, and the battery cover is removable, facilitating the removal and installation of the battery.

[0237] In one embodiment, the drying device 100 further includes a sensor that senses the state of at least one of the drying device 100, the working environment in which the drying device 100 is located, the air flow, or the receiver of radiation. In this way, the operation of the drying device 100 can be controlled according to the signal of the sensor, improving the user experience.

[0238] Specifically, the state includes at least one of temperature, humidity, distance, attitude, motion, flow rate, and flux.

[0239] The sensor may include at least one of a temperature sensor, a proximity / range sensor, a humidity sensor, an attitude sensor, a flow rate sensor, and a flux sensor. The sensor can be placed, for example, on the side of the air flow outlet 404 of the housing 10 to monitor the state (such as humidity) of the object to be dried (i.e., the receiver of the air flow or radiation). The area where the air flow is applied to the object to be dried may generally include the infrared radiation area (e.g., radiation spot) on the object to be dried. The air flow can accelerate the evaporation of water from the object to be dried by blowing away the moist air around the object to be dried. The air flow can also reduce the temperature of the object to be dried irradiated by the infrared radiation to avoid damage to the object to be dried. The temperatures of the object to be dried and the water on the object to be dried must be maintained within an appropriate range to accelerate the evaporation of water from the object to be dried while keeping the object to be dried from overheating. The appropriate temperature range can be 50 to 60 degrees Celsius. The speed of the air flow blown onto the object to be dried can be adjusted to keep the temperature of the object to be dried within the appropriate temperature range, for example, by blowing away the hot water and excess heat. The proximity / range sensor and the temperature sensor can operate together to determine the temperature of the object to be dried and adjust the speed of the air flow through feedback loop control to maintain a constant temperature or a programmed temperature of the object to be dried. The object to be dried can be, for example, hair.

[0240] The attitude sensor can collect the attitude and motion of the drying device 100. For example, the attitude sensor may include an inertial measurement unit (IMU), which can detect the state of at least one of the roll axis, pitch axis, and yaw axis of the drying device 100, and can also detect whether it is in motion on the corresponding axis. For example, when the user blows on one part of the object to be dried for a long time and the attitude sensor detects that the drying device 100 has not moved for a long time, then, to avoid damaging that part of the object to be dried, the control board can control the reduction of the rotation speed of the motor 20 and / or the reduction of the radiation intensity of the radiation source 30 according to the data output by the attitude sensor, and can also control the drying device 100 to give sound, light, vibration prompts, etc.

[0241] The flow rate sensor can detect the flow rate of the air flow, so that the control board can control the rotation speed of the motor 20 to adapt to the temperature control of the object to be dried. Similarly, the control board can also control the operation of the motor 20 and / or the radiation source 30 according to the flux data output by the flux sensor.

[0242] In one embodiment, the sensor is disposed within the housing 10 and is located at the air outlet 404 of the air duct 40 and / or the opening of the radiation source 30. Thus, more accurate control of the air flow state and / or the radiation state can be achieved.

[0243] Specifically, when the sensor is located at the air outlet 404 of the air duct 40, it is possible to detect the air flow state of the air leaving the drying device 100, such as flow rate, flux, temperature, humidity, etc., and more accurate control of the air flow state of the air leaving the drying device 100 can be performed, avoiding the influence of the internal environment of the drying device 100 on the detection of the air flow state. Similarly, when the sensor is located at the opening of the radiation source 30, it is possible to detect the radiation state of the radiation leaving the drying device 100, such as intensity, etc., and more accurate control of the radiation state of the radiation leaving the drying device 100 can be performed, avoiding the influence of the internal environment of the drying device 100 on the detection of the radiation state.

[0244] In summary, the drying device 100 of the above embodiment includes, but is not limited to, the following technical effects:

[0245] 1. Compared with the traditional drying device 100 (such as when the entire outer wall of the reflector cup 302 is directly in the air duct 40), it dissipates too much heat, which will affect the radiation efficiency. Because excessive heat dissipation means that the light-emitting component 304 needs to convert additional electrical energy into heat energy to maintain the temperature necessary for generating blackbody radiation. The configuration of the drying device 100 according to the embodiment of the present application can appropriately reduce the temperature of the radiation source 30, extend the service life of the light-emitting component 304, and at the same time, it will not reduce the temperature too low to cause waste of electrical energy (more electrical energy is used to maintain the temperature of blackbody radiation).

[0246] 2. The excess heat of the radiation source 30 is carried away by the wind, raising the wind temperature by a few degrees (1 to 5 degrees). Although it is completely insufficient to have a decisive impact on drying the hair, it improves the user's physical feeling when the wind blows on the human body, making people not feel the cold wind blowing, and improving the user experience.

[0247] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0248] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A drying device, characterized in that, Comprising: A housing, within which an air duct is provided; A motor, located in the housing and used to generate an air flow in the air duct; A radiation source, housed in the housing and used to generate infrared radiation and direct the infrared radiation to the outside of the housing, the radiation source transferring heat through a heat dissipation structure; the radiation source includes a reflector cup and a light-emitting element located within the reflector cup, and the radiation source is located outside the air duct; A first air guiding member, provided in the air duct; One end of the heat dissipation structure is connected to the outer wall of the reflector cup, and the other end of the heat dissipation structure extends into the air duct, and a part of the heat dissipation structure located in the air duct forms the first air guiding member.

2. The drying equipment according to claim 1, wherein, The first air guiding member has a streamlined windward surface.

3. The drying equipment according to claim 1, characterized in that The radiation source is provided between the housing and the air duct.

4. The drying equipment according to claim 1, characterized in that The radiation source is coupled to the air duct.

5. The drying device according to claim 1, characterized in that, The first air guiding member is integrally connected to a second air guiding member in the air duct.

6. The drying device according to claim 5, characterized in that, The second air guiding member is a flow guiding strip and / or a flow guiding groove formed on the inner wall of the air duct.

7. The drying device according to claim 5, wherein The second air guiding member is streamlined.

8. The drying device according to claim 5, characterized in that, The second air guiding member is located at the air outlet of the air duct.

9. The drying device according to claim 5, wherein The second air guiding member is a detachable nozzle, comb or curler; or, the second air guiding member is any combination of a flow guiding strip, a flow guiding groove, a nozzle, a comb and a curler.

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