Drying equipment

Abstract

A drying device comprises: a shell, a motor and a radiation source, wherein an air duct is arranged in the shell; the motor is located in the shell and is used to generate airflow in the air duct; the radiation source is accommodated in the shell and is used to generate infrared radiation and direct the infrared radiation to the outside of the shell, and the motor is fixedly connected to the radiation source via a shock absorbing device.

Description

[0001] Priority information

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

[0003] The present application relates to the field of drying technology, and in particular to a drying device. Background Art

[0004] The main components of a traditional hair dryer are a motor, a heating wire (such as a resistance wire), and an air duct. The heating wire generates heat when it is powered on, heating the air sucked in by the motor in the air duct, and then the motor blows the air out to the user's hair. However, the temperature of the air blowing on the surface of the hair is very high, which can easily burn the hair and damage the hair quality if used for a long time. Summary of the invention

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

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

[0007] A shell, wherein an air duct is provided in the shell;

[0008] a motor, located in the housing and used to generate airflow in the air duct;

[0009] A radiation source is contained in the shell and is used to generate infrared radiation and direct the infrared radiation to the outside of the shell. The motor is fixedly connected to the radiation source via a shock absorbing device.

[0010] In the above drying device, infrared (IR) radiation is used as a heat energy source to remove water and moisture from an object (such as hair). The radiation source can emit infrared energy to provide stable and consistent heat, which improves the efficiency of heat transfer and reduces damage to the object. At the same time, the motor is fixedly connected to the radiation source through a shock absorbing device, which increases the transmission path of the vibration generated by the motor and reduces the vibration generated by the motor that is transmitted to the housing.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] Figure 1 It is a schematic structural diagram of a drying device according to an embodiment of the present application;

[0014] Figure 2 It is a partial structural schematic diagram of a drying device according to an embodiment of the present application;

[0015] Figure 3 A-3D is a schematic diagram of the relationship between the radiation source and the air duct of the drying device according to the embodiment of the present application;

[0016] Figure 4 is another partial structural schematic diagram of the drying device according to the embodiment of the present application;

[0017] Figure 5 A-5D is another schematic diagram of the relationship between the radiation source and the air duct of the drying device according to the embodiment of the present application;

[0018] Figure 6 It is another partial structural schematic diagram of the drying equipment according to the embodiment of the present application;

[0019] Figure 7 A-7D is another schematic diagram of the relationship between the radiation source and the air duct of the drying equipment in the embodiment of the present application.

[0020] Figure 8 It is another structural schematic diagram of a drying device according to an embodiment of the present application;

[0021] Fig. 9 A-9D is another schematic diagram of the relationship between the radiation source and the air duct of the drying device according to the embodiment of the present application;

[0022] Fig.10 It is another structural schematic diagram of a drying device according to an embodiment of the present application;

[0023] Fig.11 A-11D is another schematic diagram of the relationship between the radiation source and the air duct of the drying device according to the embodiment of the present application;

[0024] Fig.12 It is another structural schematic diagram of a drying device according to an embodiment of the present application;

[0025] Fig.13 A-13B is another schematic diagram of the relationship between the radiation source and the air duct of the drying device according to the embodiment of the present application;

[0026] Fig.14It is another structural schematic diagram of a drying device according to an embodiment of the present application;

[0027] Fig.15 It is a partial structural three-dimensional schematic diagram of a drying device according to an embodiment of the present application;

[0028] Fig.16 is a three-dimensional schematic diagram of a radiation source of a drying device according to an embodiment of the present application;

[0029] Fig.17 A-17B is a schematic diagram of the relationship between the radiation source and the optical element in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 therefore cannot be understood as a limitation on the present application. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] The disclosure of this article provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0035] The 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 the form of radiation heat transfer, so that the heat transfer efficiency is improved compared with the traditional convection heat transfer method (for example, basically no heat is absorbed by the surrounding air in the form of radiation heat transfer, while in the traditional heat conduction method, a large part of the heat is absorbed by the surrounding air and taken away). The infrared radiation source can be used in combination with a motor, and the airflow generated by the motor further accelerates the evaporation of water from the object.

[0036] Another benefit of using infrared radiation as a heat energy source is that infrared heat can penetrate the hair shaft to the cortex of the hair cuticle, thus drying the hair faster and leaving it relaxed and soft. Infrared energy is also believed to benefit scalp health and stimulate hair growth by increasing blood flow to the scalp. The use of infrared radiation sources can also make drying devices compact and lightweight. The improved heat transfer efficiency and energy efficiency of infrared radiation sources can also extend the operating time of wireless drying devices powered by embedded batteries.

[0037] Please refer to Figure 1A drying device 100 provided in an embodiment of the present application may include a housing 10, a motor 20 and a radiation source 30. An air duct 40 is provided in the housing 10. The housing 10 may 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).

[0038] The housing 10 may include a body 102 and a handle 104, each of which may contain at least a portion of electrical, mechanical and electromechanical components. 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 may contain a power source (such as one or more batteries) for powering the drying device 100. The housing 10 may be made of an electrically insulating material. Examples of electrically insulating materials may include polyvinyl chloride (PVC), polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene copolymer (ABS), polyester, polyolefin, polystyrene, polyurethane, thermoplastics, silicone, glass, glass fiber, resin, rubber, ceramic, nylon and wood. The housing 10 may also be made of a metal material coated with an electrically insulating material, or a combination of an electrically insulating material and a metal material coated or not coated with an electrically insulating material. For example, an electrically insulating material may constitute the inner layer of the housing 10, and a metal material may constitute the outer layer of the housing 10. In one example, the handle 104 is further provided with an input component 106, which may be used for a user to operate the drying device, such as turning the drying device on and off, 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 may be controlled by a terminal that communicates with the drying device, and the terminal may include but is not limited to a mobile phone, a tablet computer, a wearable smart device, a personal computer, etc.

[0039] The housing 10 may be provided with one or more air ducts 40 inside, and the air duct 40 may be fixed in the housing 10 so that the airflow generated by the motor 20 can flow stably to avoid unexpected airflow disturbances. The airflow generated by the motor 20 may be guided or adjusted through the air duct and toward the hair of the user. For example, the air duct 40 may be shaped to at least adjust the speed, throughput, divergence angle or vortex intensity of the airflow leaving the drying device 100. The air duct 40 may include an airflow inlet 402 and an airflow outlet 404. In one example, the airflow inlet 402 and the airflow outlet 404 may 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 body 102). The airflow inlet 402 and the airflow outlet 404 may each be a vent, which allows an effective airflow throughput. Ambient air may be drawn into the air duct 40 through the airflow inlet 402 to generate airflow, and the generated airflow may leave the air duct 40 through the airflow outlet 404. The motor 20 can be located in the air duct 40 of the body 102 or in the air duct 40 of the handle 104 , which is not limited here. The air inlet 402 can also be set in the handle 104 , or in the handle 104 and the body 102 .

[0040] The cross-sectional shape of the airflow outlet 404 can be any shape, preferably a circle, an ellipse, a rectangle, a square, or various variations of a circle and a quadrilateral, such as a quadrilateral with four rounded corners, etc. No specific limitation is made here.

[0041] In one example, an air duct 40 is provided in the body 102, and the air duct 40 is substantially cylindrical. It is understood that in other embodiments, the air duct 40 may also be in other shapes, such as funnel shape, Y shape, and other regular or irregular shapes, which are not specifically limited here.

[0042] In one embodiment, one or more air filters (not shown) may be provided at the air inlet 402 to prevent dust or hair from entering the air duct 40. For example, the air filter may be a grid with an appropriate grid size. The air filter may be detachable or replaceable for cleaning and maintenance. In one embodiment, an airflow regulator (not shown) may be provided at the airflow outlet 404. The airflow regulator may be a detachable nozzle, comb or curler. The airflow regulator may be configured to regulate the speed, throughput, divergence angle or vortex intensity of the airflow blown out from the airflow outlet 404. For example, the airflow regulator may be shaped to converge (e.g., concentrate) the airflow at a preset distance in front of the airflow outlet 404. For example, the airflow regulator may be shaped to diverge the airflow leaving the airflow outlet 404.

[0043] In one embodiment, since the housing 10 is provided with a radiation source 30 for generating infrared radiation, 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 realize the miniaturization of 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 lower, which can increase the endurance of the drying device 100. In some embodiments, the heating device includes an electric heating wire (such as a resistance wire).

[0044] In one embodiment, the motor 20 is located in the housing 10 and is used to generate airflow in the air duct 40. In one example, the motor 20 can be arranged in the air duct 40 of the body 102 and near the airflow inlet 402. The motor 20 may include a drive 202 and an impeller 204. The impeller 204 may include a plurality of blades. When the impeller 204 is driven by the drive 202, the rotation of the impeller 204 can send ambient air into the air duct 40 through the airflow inlet 402 to generate airflow, push the generated airflow through the air duct 40 and discharge the airflow from the airflow outlet 404. The drive 202 may be supported by a bracket or accommodated in a shield. The motor 20 may include a brushless motor 20, and the rotation speed of the impeller 204 may be adjusted under the control of a controller (not shown). For example, the rotation speed of the impeller 204 may be controlled by a preset program, user input, or sensor data. In some embodiments, the size of the drive 202 measured in any direction may be in the range between 14 mm (millimeter) and 21 mm. The power output of the motor 20 may be in the range of 35 to 80 Watts (W). The maximum velocity of the airflow exiting from the airflow outlet 404 may be at least 8 meters per second (m / s).

[0045] exist Figure 1 and Figure 2 104, it is shown that the motor 20 is disposed in the body 102, and it is understood that in other embodiments, the motor 20 may also be disposed in the handle 104. For example, the rotation of the impeller 204 may draw air into the air flow inlet 402 disposed at the handle 104 and push the air through the air duct 40 to the air flow outlet 404 disposed at one end of the body 102. The air duct 40 may extend through the handle 104 and the body 102 of the housing 10 accordingly.

[0046] In one embodiment, the blade passing frequency of the motor 20 is close to the frequency range of ultrasound. The blade passing frequency can be expressed as the product of the motor speed and the number of blades of the motor 20. The blade passing frequency of the motor 20 is close to the frequency range of ultrasound, which can be understood as that the blade passing frequency is within the frequency range of ultrasound, or the blade passing frequency is the upper or lower limit of the frequency range of ultrasound, or the difference between the blade passing frequency and the upper or lower limit of the frequency range of ultrasound is less than a preset value. In one example, the speed of the motor 20 is in rps (revolutions per second), and the blade passing frequency is greater than or equal to 15KHz. The above-mentioned drying device 100 enables the motor 20 to provide appropriate wind power for the radiation source to properly dissipate heat.

[0047] In one embodiment, the number of blades of the motor 20 is a prime number greater than 5.

[0048] exist Figure 1 In the example, 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 reflective cup 302, and a part of the outer wall (such as the windward surface) of the reflective cup 302 is located outside the air duct 40. This part is not blown by the airflow of the air duct 40, and thus the heat exchange amount between this part and the air duct 40 is small. On the one hand, the radiation source 30 can be properly dissipated, and on the other hand, the radiation source 30 can be kept at a suitable working temperature during operation, which can improve the evaporation efficiency of water on the object.

[0049] In one embodiment, the speed of the motor 20 is greater than or equal to 50,000 rpm (revolutions per minute). In other words, the motor speed is at least 50,000 revolutions per minute. In this way, by using the high-speed motor 20 (the speed of the motor 20 is greater than or equal to 50,000 rpm), sufficient air volume can be generated while also properly dissipating heat for the radiation source 30.

[0050] Specifically, in the prior art, due to the use of a low-speed motor, in order to effectively dissipate heat for a single high-power radiation source, the radiation source is usually placed directly in the air duct as a whole. For example, the entire outer wall of the reflective cup of the radiation source (i.e., the entire windward surface) is directly blown by the airflow of the air duct to take away the heat of the radiation source. However, the disadvantages of this drying equipment are: 1) the length of the body along the axial direction of the air duct (such as the horizontal direction) is relatively long (large in size), because a) the reflective 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 burns and accidents. 2) The shape of the radiation source in the air duct 40 (such as the shape of the outer wall of the reflective cup) will affect the airflow, such as generating wind resistance, wind noise, changing the direction of the airflow, etc., and ultimately wasting the energy of the wind.

[0051] In the embodiment of the present application, the 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 of the high-speed motor 20 (measured in Cubic per Minute / CPM), the heat dissipation efficiency can be derived, and then the heat dissipation area required by the radiation source 30 can be derived. 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 portion of the radiation source 30 in the embodiment of the present application can be located outside the air duct 40 and not directly blown by the airflow of the air duct 40. Even when a high-power single radiation source 30 is used, the radiation source 30 can be kept at a suitable operating temperature. At the same time, since a portion of the radiation source 30 is located outside the air duct 40, the radiation source 30 can be structurally offset along the radial direction (such as the vertical direction) of the air duct 40, which can reduce the length of the main body 102 and reduce the adverse effect of the shape of the radiation source 30 on the airflow.

[0052] In one embodiment, the motor 20 is fixed in the housing 10 via a shock absorbing device (not shown). In this way, the vibration generated by the motor 20 can be reduced or prevented from being transmitted to the housing 10, thereby avoiding causing trouble to the user during use.

[0053] Specifically, the shock absorbing device may include an elastic member, and the vibration generated when the motor 20 is running can be absorbed by the elastic member to reduce the transmission of the vibration.

[0054] In one embodiment, the shock absorbing 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 generated by the motor 20 and transmitted to the housing 10 is further reduced. Specifically, the shock absorbing 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 vibration transmission path formed is further motor 20-> shock absorbing device-> radiation source 30-> housing 10.

[0055] In one embodiment, the shock absorbing device comprises a sleeve formed of an elastic material, and the sleeve comprises 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. In this way, the vibration transmission is reduced by the flexibly coupled clamping portion.

[0056] Specifically, the sleeve can be sleeved outside the driving part 202 of the motor 20, the clamping part can be arranged on the outer surface of the sleeve, and the clamping part can be formed into a plurality (two or more than two) and evenly spaced along the circumference of the sleeve to evenly reduce vibration transmission. Of course, the clamping part can also be formed into a single one, and the single clamping part is arranged in an annular shape on the outer surface of the sleeve.

[0057] The sleeve includes a clip portion extending around the sleeve and flexibly coupled with at least one of the shell 10, the air duct 40 and the radiation source 30. It can be that the sleeve includes a clip portion extending around the sleeve and flexibly coupled with the shell 10. It can be that the sleeve includes a clip portion extending around the sleeve and flexibly coupled with the air duct 40. It can be that the sleeve includes a clip portion extending around the sleeve and flexibly coupled with the radiation source 30. It can be that the sleeve includes a clip portion extending around the sleeve and flexibly coupled with the shell 10 and the air duct 40. It can also be that the sleeve includes a clip portion extending around the sleeve and flexibly coupled with the air duct 40 and the radiation source 30. It can also be that the sleeve includes a clip portion extending around the sleeve and flexibly coupled with the shell 10, the air duct 40 and the radiation source 30.

[0058] In one embodiment, the clamping portion is a protrusion formed of a rubber material. In this way, the protrusion is easy to connect, the protrusion formed of the rubber material is also easy to shape, and the shock absorbing effect is better.

[0059] In one embodiment, the radiation source 30 is housed in the housing 10 and is used to generate infrared radiation and direct the infrared radiation to the outside of 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 performs heat exchange with the air duct 40.

[0060] The number of radiation sources 30 can be single, or multiple (two or more than two). When the number of radiation sources 30 is multiple, the radiation source 30 is configured to form a light spot at a certain distance outside the opening side of the radiation source 30. In this way, the infrared radiation intensity of the light spot area is high, and the object can be effectively dried. It is 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.

[0061] Specifically, by adjusting the opening direction of the radiation source 30, the multiple radiation sources 30 form a light spot at a certain distance from the outside of the drying device 100. 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.

[0062] In one embodiment, along the direction of air flow, the second portion is located downstream of the motor 20. In this way, the heat exchange effect between the second portion and the air duct 40 can be improved.

[0063] For details, please refer to Figure 1The radiation source 30 is located at a position close to the left side of the drying device 100, and the motor 20 is located at a position close to the right side of the drying device 100. When the motor 20 is working, it inhales air from the external environment on the right side of the drying device 100, and outputs a faster airflow from the left side of the motor 20, and the airflow flows to the radiation source 30. The faster airflow can improve the heat exchange efficiency between the second part and the air duct 40.

[0064] 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 realized, such as Figure 1 shown.

[0065] 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.

[0066] In one embodiment, the radiation source 30 may be fixed in the housing 10, that is, the radiation source 30 is located between the air duct 40 and the housing 10, regardless of whether the drying device 100 is in operation or not in operation. In one embodiment, the radiation source 30 is movably arranged in the housing 10, for example, by adding a mobile structure to adjust the position of the radiation source 30, so that when the drying device 100 is in operation, the radiation source 30 is driven to a position between the air duct 40 and the housing 10, and when the drying device 100 is not in operation, the radiation source 30 is moved to other positions, for example, to the air duct 40, or other positions in the housing 10 that are convenient for storage. In one embodiment, the position of the air duct 40 may be adjusted by a mobile structure, or the position of the air duct 40 and the radiation source 30 may be adjusted by a mobile structure. No specific limitation is made here.

[0067] In one embodiment, all radiation sources 30 are located outside the wind duct 40. The number of radiation sources 30 may include multiple, and all radiation sources 30 are located outside the wind duct 40, so that the wind duct 40 generates less airflow resistance during operation, which helps to reduce wind noise and wind resistance.

[0068] Specifically, there is no radiation source 30 in the air duct 40, which has little effect on the wind speed and wind volume, and does not generate additional wind noise. The wind speed and wind volume have a great influence on the blowing speed. In particular, when the drying device 100 is used to dry hair, since the drying device 100 is close to the ear during the hair blowing process, the low noise can improve the user experience.

[0069] In one embodiment, the radiation source 30 can be arranged in the circumference of the air duct 40 near the air outlet 404 of the air duct 40. In this way, on the one hand, when the wind flows out from the air outlet 404, part of the heat of the radiation source 30 is taken away by the wind, causing the wind temperature to rise by several degrees (1 to 5 degrees). Although it is not enough to have a decisive impact on the dried object (such as dry hair), it improves the body feeling of the person after the wind blows on the human body, so that the person will not feel the cold wind, thereby improving the user experience. On the other hand, the infrared radiation emitted by the radiation source 30 will basically not be blocked by the air duct 40, which is conducive to improving the drying efficiency.

[0070] In one embodiment, the radiation source 30 is arranged around the air flow outlet 404 of the air duct 40. Figure 2 , Figure 3 In the example of A-3D, the radiation source 30 has a circular or approximately circular shape along a plane perpendicular to the axial direction of the air duct 40. Figure 3 In the example of A, there are two radiation sources 30, and the two radiation sources 30 are arranged around the airflow outlet 404 of the air duct 40 at an interval of 180 degrees. Figure 3 In the example of B, the number of radiation sources 30 is three, and the three radiation sources 30 are arranged around the airflow outlet 404 of the air duct 40 at intervals of 120 degrees. Figure 3 In the example of C, the number of radiation sources 30 is four, and the four radiation sources 30 are arranged around the airflow outlet 404 of the air duct 40 at intervals of 90 degrees. Figure 3 In the example of D, the number of radiation sources 30 is five, and the five radiation sources 30 are arranged around the air outlet 404 of the air duct 40 at intervals of 72 degrees. It is understandable that the number of radiation sources 30 can also be more than five, and they are evenly spaced around the air outlet 404 of the air duct 40 along the circumference of the air duct 40. In addition, in other embodiments, among the multiple radiation sources 30, the angle between two adjacent radiation sources 30 can be different. This is not specifically limited here. Figure 4 , Figure 5 In the example of A-5D, the radiation source 30 has a circular ring or a fan shape along a plane perpendicular to the axial direction of the air duct 40. Figure 5 In the example of A, the number of radiation sources 30 is single, and the single radiation source 30 is in a circular shape and is arranged around the airflow outlet 404 of the air duct 40 at 360 degrees along the circumference of the air duct 40. Figure 5 In the example of B, there are two radiation sources 30, each of which is substantially in the shape of a 180-degree fan, and each of which is arranged at a circumference of the air duct 40 at approximately 180 degrees around the air flow outlet 404 of the air duct 40, and the two radiation sources 30 are arranged substantially in a circular shape. Figure 5In the example of C, there are three radiation sources 30, each of which is substantially in the shape of a 120-degree fan, and each of which is arranged at an angle of approximately 120 degrees around the air outlet 404 of the air duct 40 along the circumference of the air duct 40, and the three radiation sources 30 are arranged substantially in a circular shape. Figure 5 In the example of D, the number of radiation sources 30 is four, each radiation source 30 is substantially in the shape of a 90-degree fan, each radiation source 30 is arranged at nearly 90 degrees along the circumference of the wind duct 40 around the air flow outlet 404 of the wind duct 40, and the four radiation sources 30 are arranged substantially in a circular ring. It can be understood that the number of radiation sources 30 can also be more than four, and they are evenly spaced along the circumference of the wind duct 40 around the air flow outlet 404 of the wind duct 40. In addition, in other embodiments, among the multiple radiation sources 30, the fan-shaped curvature of each radiation source 30 can be different. It is not specifically limited here.

[0071] In one embodiment, the radiation source 30 is arranged on one side of the air flow outlet 404 of the air duct 40. Figure 6 , Figure 7 In the example of A-7D, the radiation source 30 has a circular or approximately circular shape along a plane perpendicular to the axial direction of the air duct 40. Figure 7 In the example of A, the number of radiation sources 30 is single, and the single radiation source 30 is arranged at the lower half of the air flow outlet 404 of the air duct 40. Figure 7 In the example of B, there are two radiation sources 30, which are arranged at the lower half of the air flow outlet 404 of the air duct 40. Figure 7 In the example of C, the number of radiation sources 30 is three, and the three radiation sources 30 are arranged at the lower half of the air flow outlet 404 of the air duct 40. 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 of the airflow outlet 404 of the air duct 40. It is understandable that the number of radiation sources 30 can also be more than five, and they are arranged on the lower half of the airflow outlet 404 of the air duct 40. In addition, in other embodiments, the radiation sources 30 can also be arranged on the upper half, the left half, the right half, the upper left half, the lower left half, the upper right half, and the lower right half, which are not specifically limited here. In other embodiments, the shape of the radiation source 30 along the plane perpendicular to the axial direction of the air duct 40 can be circular or fan-shaped.

[0072] In other embodiments, any combination of circular radiation sources 30 , annular radiation sources 30 , and fan-shaped radiation sources 30 may be dispersedly arranged on one side of the airflow outlet 404 of the air duct 40 , or arranged around the airflow outlet 404 of the air duct 40 .

[0073] In one embodiment, the second portion is integrally connected to the air duct 40. In this way, the heat exchange efficiency between the second portion and the air duct 40 can be high.

[0074] Specifically, the radiation source 30 may include a reflective cup 302, and the second part may be a part of the outer wall of the reflective cup 302 or a part of the base 310 of the reflective cup 302. The reflective cup 302 may be integrally connected with the air duct 40. The integral connection may be achieved by an injection molding process, or by a welding process. No specific limitation is made here. The outer wall of the reflective cup 302 and the air duct 40 form a joint at the section of the air flow outlet 404. At the joint, the inhaled wind and the reflective cup 302 perform heat exchange, and the temperature of the wind will increase by about 1 to 5 degrees, and then blow out. Although it is not enough to have a decisive impact on the dried object (such as dry hair), it improves the physical sensation of the person after the wind blows on the human body, so that people will not feel blown by cold wind, thereby improving the user experience.

[0075] In one embodiment, the radiation source 30 is surrounded by the air duct 40. In this way, another configuration of the drying device 100 can be achieved, such as Figure 8 shown.

[0076] Specifically, the radiation source 30 may be placed in the air duct 40, and a first portion of the radiation source 30 may be shielded by a shielding member so that the first portion is not blown by the airflow in the air duct 40. For example, the first portion may include a portion of the outer wall of the reflective cup 302, and the portion may be shielded so that the portion is not blown by the airflow in the air duct 40. The portion of the outer wall of the reflective cup 302 that is not shielded may serve as the second portion, and the airflow in the air duct 40 may blow to the second portion, so that the second portion and the air duct 40 perform heat exchange.

[0077] exist Figure 8 , Fig. 9 In the example of A-9D, the radiation source 30 has a circular or approximately circular shape along a plane perpendicular to the axial direction of the air duct 40. Fig. 9 In the example of A, the number of the radiation source 30 is single, and the single radiation source 30 is arranged in the air duct 40. Fig. 9 In the example of B, the number of radiation sources 30 is two, and the two radiation sources 30 are dispersedly arranged in the wind duct 40 along the radial direction of the wind duct 40. Fig. 9 In the example of C, the number of radiation sources 30 is three, and the three radiation sources 30 are dispersedly arranged in the air duct 40 in a triangular shape. Fig. 9 In the example of D, there are four radiation sources 30, which are dispersedly arranged in the air duct 40 in a square shape. It is understandable that the number of radiation sources 30 can be more than four, which are dispersedly arranged in the air duct 40. No specific limitation is made here.

[0078] exist Fig.10 , Fig.11 In the example of A-11D, the radiation source 30 has a circular ring or a fan shape along a plane perpendicular to the axial direction of the air duct 40. Fig.11 In the example of A, there are two radiation sources 30, each of which is in a circular shape, and the two radiation sources 30 are concentrically arranged in the air duct 40, thereby forming two layers of annular radiation sources 30. Fig.11 In the example of B, there are two radiation sources 30, each radiation source 30 is substantially in the shape of a 180-degree fan, and the two radiation sources 30 are arranged substantially in the shape of a ring. Fig.11 In the example of C, there are three radiation sources 30, each of which is substantially in the shape of a 120-degree sector, and the three radiation sources 30 are arranged substantially in a circular shape. Fig.11 In the example of D, the number of radiation sources 30 is four, each radiation source 30 is substantially in the shape of a 90-degree fan, and the four radiation sources 30 are arranged substantially in a circular shape. It is understandable 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 the multiple radiation sources 30, the fan-shaped curvature of each radiation source 30 can be different. No specific limitation is made here.

[0079] In other embodiments, any combination of circular radiation sources 30 , annular radiation sources 30 , and fan-shaped radiation sources 30 may be dispersedly arranged in the air duct 40 .

[0080] In one embodiment, there are multiple radiation sources 30 , and the multiple radiation sources 30 are dispersedly arranged in the air duct 40 .

[0081] In this way, the multiple radiation sources 30 dispersedly arranged in the air duct 40 can avoid the phenomenon of overheating of the radiation source 30 or the air duct 40 due to excessive concentration of heat.

[0082] For details, please refer to Fig.12 and Fig.13 A. An air duct 40 is provided with an air flow outlet 404 , and the multiple radiation sources 30 dispersedly arranged can be placed in the air flow outlet 404 of the air duct 40 in a star shape.

[0083] In one embodiment, the air duct 40 is provided with a plurality of air flow outlets 404, and the radiation source 30 is arranged between adjacent air flow outlets 404. Fig.13 As shown in B.

[0084] Specifically, one air duct 40 may be provided with a plurality of airflow outlets 404, and the plurality of radiation sources 30 dispersedly arranged may be placed in the air duct 40 in a star shape. Alternatively, there may be a plurality of air ducts 40, each of which may be provided with an airflow outlet 404. The plurality of airflow outlets 404 may be embedded in the gaps between the plurality of radiation sources 30 in a star shape. Alternatively, a mixed arrangement of the above two arrangements may be provided, which is not specifically limited here.

[0085] In one embodiment, please combine Figure 8 , Fig.10 and Fig.12 , the drying device 100 further includes an isolator 50, which is disposed in the air duct 40. In this way, the isolator 50 can be used to shield a portion of the radiation source 30, and the shielded portion of the radiation source 30 is not blown by the airflow in the air duct 40, and the portion can be used as the first portion, which can be considered to be located outside the air duct 40. In one example, the shielded portion of the radiation source 30 can be at least one of a portion of the outer wall of the reflective cup 302 and the base 310 of the reflective cup 302. The outer wall of the isolator 50 can be configured in the form of an air guide, for example, the outer wall of the isolator 50 is configured to be streamlined to reduce wind noise and wind resistance. Further, a heat sink (not shown) is provided on the outer wall of the isolator 50. In this way, the heat dissipation efficiency can be accelerated. Specifically, the heat sink can include one or any combination of heat dissipation fins, heat dissipation air ducts, heat pipes and heat dissipation plates.

[0086] In one embodiment, the partition 50 is disposed at the airflow outlet 404 of the air duct 40. In this way, the partition 50 disposed at the airflow outlet 404 has a relatively small adverse effect on the airflow in the air duct 40.

[0087] In one embodiment, the isolation element 50 is coupled to at least one of the radiation source 30 , the housing 10 , and the air duct 40 .

[0088] Specifically, the coupling manner may be a detachable connection or a fixed connection.

[0089] In one embodiment, the airflow flows in a channel formed by the inner wall of the air duct 40 and the outer wall of the partition 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 partition 50.

[0090] Specifically, the isolating member 50 may absorb the heat generated by the radiation source 30 when it is working and heat up. When the airflow passes through the channel, the isolating member 50 can be cooled, thereby ensuring the service life of the isolating member 50.

[0091] In one embodiment, a portion of the radiation source 30 is contained in the isolation member 50 . In this way, the isolation member 50 can shield a portion of the radiation source 30 from being blown by the airflow in the air duct 40 .

[0092] Specifically, the radiation source 30 may include a reflective cup 302, and a portion of the outer wall of the reflective cup 302 can be accommodated in the isolation member 50. This portion can serve as the first portion to avoid excessive heat dissipation of the radiation source 30 caused by direct blowing of the airflow of the air duct 40, thereby ensuring that the radiation source 30 maintains a suitable operating temperature during operation.

[0093] In one embodiment, the radiation source 30 is in coplanar contact with the isolation member 50. In this way, the adverse effect of the connection formed by the radiation source 30 and the isolation member 50 on the airflow can be reduced.

[0094] Specifically, the coplanar contact can make the connection between the radiation source 30 and the isolation member 50 smooth, so that the airflow can flow smoothly through the connection, reducing wind noise and wind resistance. In one example, the connection can form a streamlined surface.

[0095] In one embodiment, please combine Figure 8 , Fig.10 and Fig.12 , the inner wall of the isolation member 50 and the outer wall of the radiation source 30 form a cavity 60, and the first part includes the outer wall portion of the radiation source 30 that forms the cavity 60. Specifically, the outer wall portion of the radiation source 30 may be a portion of the outer wall of the reflective cup 302, or the base 310 of the reflective cup 302, or a portion of the base 310, or include a portion of the outer wall of the reflective cup 302 and the base 310 of the reflective cup 302, or include a portion of the outer wall of the reflective cup 302 and a portion of the base 310 of the reflective cup 302. In other words, the outer wall portion of the radiation source 30 that forms the cavity 60 is blocked by the isolation member 50, so that the airflow of the air duct 40 cannot blow directly.

[0096] In one embodiment, the air duct 40 exchanges heat with the radiation source 30 by at least one of heat conduction and heat convection via the isolation member 50. In this way, the heat of the radiation source 30 can be properly dissipated without the temperature being too high or too low during operation.

[0097] In one embodiment, the drying device 100 further includes a control panel (not shown), which is disposed in the isolation member 50. In this way, the space in the housing 10 can be fully utilized, and the structure of the drying device 100 can be made compact.

[0098] Specifically, the control board can be placed in the cavity 60, and the control board can include a circuit board and various components mounted on the circuit board, such as a processor, a controller, a power supply, a switch circuit, a detection circuit, etc. The control board can be electrically connected to the radiation source 30 and the motor 20, and other electrical parts, 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 of the drying device 100, the operation time, the motor speed, the power of the radiation source 30, etc.

[0099] In one embodiment, the drying device 100 includes a power supply, a portion of which is disposed within the isolation member 50, and the power supply is electrically connected to at least one of the radiation source 30 and the control board. In this way, the heat of the power supply can be dissipated through the isolation member 50, and the power supply can supply power to at least one of the radiation source 30 and the control board.

[0100] Specifically, the power supply may include one or more batteries, and the battery may be a rechargeable battery. 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. The control board may be connected to a switch, and the on and off of the switch may be controlled to control whether the power supply supplies power to the radiation source 30.

[0101] In one embodiment, along the direction of air flow, the motor 20 is located downstream of at least part of the power supply, so that the heat generated by the power supply when it is working is taken away by the wind from the motor, thus ensuring the normal operation of the power supply.

[0102] Please refer to Figure 1 The power source 70 may include multiple batteries, and the motor 20 may be located downstream of all the batteries, or between multiple batteries. For example, the batteries are placed at the lower part of the handle 104, the motor 20 is placed in the middle, and the batteries are placed at the upper part. The lower half of the handle is the battery, the upper half is the motor 20, and there are batteries in the body 102. In this way, the airflow (wind) generated by the motor 20 can flow through at least part of the power source, so that the power source part blown by the wind can be cooled.

[0103] In addition, generally, the power source 70 is heavier than the motor 20, and the motor 20 is located downstream of at least part of the power source 70, which can prevent the drying device 100 from being top-heavy. Further, the airflow resistance generated by the motor 20 can also be reduced.

[0104] In one embodiment, the drying device 100 includes a safety sensor (not shown), which is electrically connected to the power source 70 and the radiation source 30. The safety sensor is used to disconnect the power supply of the power source 70 when the temperature of the radiation source 30 is greater than a set temperature. In this way, the safety of the drying device 100 can be improved.

[0105] Specifically, the temperature of the radiation source 30 during operation may reach several hundred degrees or even thousands of degrees. If the temperature of the radiation source 30 rises abnormally due to abnormal operation, it may cause a burn accident to the user. Therefore, a safety sensor is provided. When the temperature of the radiation source 30 is greater than the set temperature, the power supply of the power supply 70 can be disconnected, so that the radiation source 30 stops working and the temperature drops, thereby avoiding safety accidents and improving the safety of the drying device 100. The specific value of the set temperature can be set according to needs and is not specifically limited here.

[0106] In one example, the safety sensor may include a thermostat, and the parameter selection of the thermostat may be determined according to the value of the set temperature.

[0107] 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 of the airflow around the radiation source 30 is basically the same, avoiding the situation where the radiation source 30 has a local high temperature and a local low temperature, which is conducive to maintaining the working efficiency of the radiation source 30 and the stability of the intensity of infrared radiation.

[0108] In one example, the number of 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 radiation sources 30 is multiple, and the multiple radiation sources 30 are disposed around the circumference of the longitudinal axis L of the air duct 40 .

[0109] The radiation source 30 may include a reflective cup 302 and a light emitting member 304. The light emitting member 304 is located inside the reflective cup 302. The first portion includes a portion of the outer wall of the reflective cup 302, and the second portion includes another portion of the outer wall of the reflective cup 302. Figure 1 In the embodiment, the second portion may be a portion of the outer wall of the reflective cup 302 that is in direct contact with the outer wall of the air duct 40, and the first portion may be another portion of the outer wall of the reflective cup 302 that is connected to the outer wall of the air duct 40 through the second portion. In other embodiments, the second portion may include a portion of the base 310 of the reflective cup 302, and a portion of the base 310 is in direct contact with the outer wall of the air duct 40. It is understood that in other embodiments, the first portion may include the base 310 of the reflective cup 302, or a portion of the base 310.

[0110] Preferably, the surface area of ​​the first portion is greater than the surface area of ​​the second portion. In this way, the radiation source 30 can be properly cooled and a suitable operating temperature of the radiation source 30 can be maintained.

[0111] Specifically, the second portion 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 portion and the air duct 40.

[0112] exist Figure 1 , Figure 4 and Figure 6In the illustrated embodiment, the second portion is in direct contact with the outer wall of the air duct 40. Specifically, in one example, a portion of the outer wall of the reflective cup 302 is in direct contact with the outer wall of the air duct 40 for heat exchange. Specifically, a portion of the outer wall of the reflective cup 302 may form a portion of the outer wall of the air duct 40 to directly contact another portion of the outer wall of the air duct 40, that is, the portion of the outer wall of the reflective cup 302 serves as both a portion of the outer wall of the reflective cup 302 and a portion of the outer wall of the air duct 40. In addition, a portion of the outer wall of the reflective cup 302 may be located outside the outer wall of the air duct 40 and in direct contact with the outer wall of the air duct 40.

[0113] exist Figure 14-16 In the illustrated embodiment, the second part contacts the air duct 40 through an additional heat dissipation structure 80 for heat exchange. Specifically, the heat dissipation structure 80 may include metals (such as aluminum, copper, aluminum alloy, copper alloy, etc.) that are conducive to heat dissipation, carbon fiber materials, etc. The specific form of the heat dissipation structure 80 is not limited, for example, it may include one or any combination of heat dissipation fins, heat dissipation plates, heat dissipation air ducts, and heat pipes. The heat dissipation structure 80 can enable the air duct 40 to exchange heat with the second part by at least one of heat conduction and heat convection. In the illustrated embodiment, the heat dissipation structure 80 includes a plurality of heat dissipation fins arranged at intervals, and an air flow channel is formed between two adjacent heat dissipation fins, so that the air flow can flow through the air flow channel to take away the heat, thereby improving the heat dissipation efficiency.

[0114] In one embodiment, the heat dissipation structure 80 connects the second portion and the outer wall of the air duct 40, that is, the heat dissipation structure 80 is provided between the air duct 40 and the second portion. In one example, the second portion is a portion of the outer wall of the reflective cup 302, and the heat dissipation structure 80 connects the portion of the outer wall of the reflective cup 302 and the outer wall of the air duct 40.

[0115] In one embodiment, please combine Fig.14 and Fig.15 , a portion of the heat dissipation structure 80 is located in the air duct 40. In one example, the second portion is a portion of the outer wall of the reflective cup 302, one end of the heat dissipation structure 80 is connected to the portion of the outer wall of the reflective cup 302, and the other end of the heat dissipation structure 80 extends into the air duct 40, and the airflow in the air duct 40 is directly blown to the end of the heat dissipation structure 80. Further, the portion of the heat dissipation structure 80 located in the air duct 40 can be formed as a first air guide. In this way, the adverse effect of the portion of the heat dissipation structure 80 on the airflow can be reduced, and wind noise, wind resistance, etc. can be reduced.

[0116] Specifically, the first air guide may have a streamlined windward surface, and the airflow can flow smoothly through the windward surface. Furthermore, the first air guide is integrally connected to the second air guide in the air duct 40. In this way, on the one hand, the second air guide in the air duct 40 can guide the airflow, and on the other hand, the heat exchange efficiency can also be accelerated. The second air guide may be a guide strip and / or guide groove formed on the inner wall of the air duct 40, and the second air guide may also be arranged to be streamlined. Through the arrangement of the second air guide, the airflow can be rectified and the direction adjusted. The first air guide is integrally connected to the second air guide in the air duct 40, so that the airflow passes through the first air guide and the second air guide seamlessly, further reducing wind noise and wind resistance, etc.

[0117] In one embodiment, the heat dissipation structure 80 forms a part of the outer wall of the air duct 40. That is, a part of the outer wall of the air duct 40 can form the heat dissipation structure 80 to perform heat exchange with the second part (such as a part of the outer wall of the reflective cup 302).

[0118] In one embodiment, the heat dissipation structure 80 forms a part of the inner wall of the air duct 40. That is, a part of the inner wall of the air duct 40 can form the heat dissipation structure 80 and perform heat exchange with the second part (such as a part of the outer wall of the reflective cup 302) through the connection structure through the wall of the air duct 40.

[0119] In the embodiment of the present application, the outer wall and the inner wall of the air duct 40 may 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.

[0120] In one embodiment, the light emitting element 304 emits radiation containing infrared bands. In this way, the infrared band radiation emitted by the light emitting element 304 can be used to dry the object, and the drying effect is good.

[0121] Specifically, the infrared radiation may include far infrared radiation, near infrared radiation, etc. In one example, the infrared radiation emitted by the light emitting element 304 may cover an infrared spectrum above 0.7 μm. In one example, the wavelength of the infrared radiation emitted by the light emitting element 304 is in the range of 0.7 μm to 20 μm.

[0122] In another example, the radiation emitted by the light emitting element 304 may substantially cover the visible spectrum from 0.4 μm to 0.7 μm and the infrared spectrum above 0.7 μm.

[0123] In one embodiment, the light emitting element 304 includes at least one of a halogen lamp, ceramics, graphene, and a light emitting diode.

[0124] Specifically, examples of ceramics may include positive temperature coefficient (PTC) heaters and metal ceramic heaters (MCH). The ceramic light emitting member 304 includes a metal heating element buried inside the ceramic, such as tungsten buried inside silicon nitride or silicon carbide. The light emitting member 304 may be provided in the form of a wire (e.g., a silk). The wire may be patterned (e.g., to form a spiral wire) to increase its length and / or surface. The light emitting member 304 may also be provided in the form of a rod. In one example, the light emitting member 304 may be a silicon nitride rod, a silicon carbide rod, or a carbon fiber rod having a preset diameter and length.

[0125] The light emitting element 304 may be selected from one of halogen lamp, ceramic, graphene, and light emitting diode, or may be selected from a combination of two or more of the halogen lamp, ceramic, graphene, and light emitting diode, without specific limitation.

[0126] In order to have a higher infrared emissivity, it is necessary to increase the temperature of the light emitting member 304. The temperature of the light emitting member 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 member 304 may be 900 to 1500 degrees Celsius. The center wavelength or wavelength range of the infrared radiation emitted by the light emitting member 304 may be tunable, for example, 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 radiation emitted from the light emitting element 304 can be adjusted in different operating modes of the drying device 100 (e.g., quick drying mode, hair health mode, etc.), for example, by changing the voltage and / or current supplied to the drying device 100.

[0127] The reflective cup 302 may be configured to adjust the direction of radiation emitted from the light emitting element 304. For example, the reflective cup 302 may be configured to reduce the divergence angle of the reflected radiation beam.

[0128] The reflective surface of the reflective cup 302 can be coated with a coating material that has a high reflectivity for the wavelength or wavelength range of the radiation emitted by the light emitting member 304. For example, the coating material can have a high reflectivity for wavelengths in both the visible spectrum and the infrared spectrum. Materials with high reflectivity can be very efficient in reflecting radiant energy. Examples of coating materials can include metallic materials and dielectric materials. The metallic materials can include, for example, silver and aluminum. The dielectric coating can 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 reflective 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 more. In some examples, 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 may be reflected toward the exterior 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 reflective cup 302 will not substantially increase due to the radiation emitted from the light emitting element 304.

[0129] In one embodiment, the axial cross section of the reflective surface of the reflective cup 302 is in the shape of a polynomial curve, so that the reflective surface can be formed with a focus, which is convenient for guiding infrared radiation and reducing the divergence angle of the reflected radiation beam.

[0130] Specifically, the shape of the polynomial curve may include a parabola, an ellipse, a hyperbola, etc. In one example, the axial cross section of the reflective surface of the reflective cup 302 is in the shape of a parabola.

[0131] In one embodiment, the light emitting element 304 is disposed at the focus of the reflective surface of the reflective cup 302. In this way, the infrared beam emitted by the light emitting element 304 can be reflected by the reflective surface and then emitted from the opening of the reflective cup 302 substantially in parallel, so that the infrared radiation emitted by the drying device 100 has good directivity.

[0132] Specifically, the light emitting element 304 is disposed at the focus of the reflective surface of the reflective cup 302 . The infrared radiation beam emitted by the light emitting element 304 at the focus is reflected by the reflective surface of the reflective cup 302 and then emitted from the opening of the reflective cup 302 substantially in parallel with each other.

[0133] In other embodiments, the light emitting member 304 may also be placed away from the focus of the parabola so that the reflected infrared radiation beam may converge or diverge at a certain distance in front of the drying device 100. The position of the light emitting member 304 in the reflective cup 302 is adjustable, so the convergence degree and / or direction of the output radiation beam may be changed. The shape of the reflective cup 302 and the shape of the light emitting member 304 may be optimized and varied relative to each other to output a desired heating power at a desired position of the drying device 100.

[0134] In addition, a heat insulating material (e.g., glass fiber, mineral wool, cellulose, polyurethane foam, or polystyrene) may be inserted between the light emitting member 304 and the reflective cup 302 to insulate the light emitting member 304 from the reflective cup 302. Even if the temperature of the light emitting member 304 is high, the heat insulation may keep the temperature of the reflective cup 302 from increasing. A heat insulating material may also be inserted between the periphery of the optical element and the reflective cup 302 to insulate the optical element from the reflective cup 302.

[0135] In one embodiment, please combine Fig.17 A- Fig.17 B. The radiation source 30 includes an optical element 90, which is disposed at the opening of the reflective cup 302 and is used to filter out or reflect radiation in non-infrared bands, so that only infrared radiation can be directed to the object to be dried.

[0136] 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.

[0137] The optical element 90 may be made of a material having a 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, either or both sides of the optical element 90 may be coated with a material that absorbs or reflects the visible and ultraviolet spectra so that only wavelengths in the infrared range can pass through the optical element 90. The optical element 90 may filter out (e.g., absorb) radiation that is not in the infrared spectrum. Optical element 90 may have an infrared transmittance of at least 95% (e.g., 95% of incident radiation in the infrared spectrum is transmitted through 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 more. In one example, optical element 90 may have an infrared transmittance of 99%.

[0138] In one example, the light emitting member 304 can emit radiation having a wavelength of 0.4 μm to 20 μm, the reflective cup 302 can reflect all of the radiation toward the optical element 90 (e.g., no radiation is absorbed at the reflective surface), and the optical element 90 can filter out any visible spectrum wavelengths between 0.4 μm and 0.7 μm from the reflected radiation, so that only radiation in the infrared spectrum leaves the radiation source 30.

[0139] In one embodiment, the optical element 90 is sealed at the opening of the reflective cup 302. In this way, a relatively sealed internal space can be formed in the reflective cup 302.

[0140] Specifically, the internal space of the reflective cup 302 can be configured to have a certain degree of vacuum. The pressure inside the reflective cup 302 can be less than 0.9 standard atmospheric pressure (atm), 0.8atm, 0.7atm, 0.6atm, 0.5atm, 0.4atm, 0.3atm, 0.2atm, 0.1atm, 0.05atm, 0.01atm, 0.001atm, 0.0001atm or less. In one embodiment, the reflective cup 302 is close to a vacuum state, for example, the pressure inside the reflective cup 302 can be about 0.001atm 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 reflective cup 302.

[0141] In one embodiment, the reflective cup 302 is filled with a protective gas, which 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 temperature increase of the gas inside the space formed by the reflective cup 302 and the inner surface of the optical element 90. Although the temperature increase is very small, it is caused by thermal convection and thermal conduction. Examples of non-oxidizing gases may include nitrogen (N2), helium (He), argon (Ar), neon (Ne), krypton (Kr), xenon (Xe), radon (Rn) and nitrogen (N2). The presence of an inert gas can further protect the material of the light-emitting member 304 from oxidation and evaporation.

[0142] exist Fig.17 In the embodiment shown in A, multiple radiation sources 30 share one optical element 90, that is, one optical element is arranged at the opening of the reflective cups 302 of all radiation sources. Fig.17 In the embodiment shown in B, each radiation source is provided with an optical element 90 , that is, one optical element 90 is provided at the opening of one reflective cup 302 .

[0143] In one embodiment, the drying device 100 further includes a control board, which is electrically connected to the radiation source 30 and / or the motor 20. In this way, the drying device 100 can be controlled.

[0144] Specifically, 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 70, a switch circuit, a detection circuit, etc. The control board may be electrically connected to the radiation source 30 and 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 time, motor speed, power of the radiation source 30, etc. of the drying device 100.

[0145] 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 a control board, and the control board is electrically connected to the radiation source 30 and the motor 20. In this way, the power consumption of the radiation source 30 and the motor 20 can be controlled by the control board.

[0146] Specifically, the control board can convert the voltage of the power supply 70 into the voltage of the radiation source 30 and the voltage of 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 speed of the motor 20 (i.e., the speed of the fan blade), etc. can be adjusted. Or the power supply 70 is turned on and off to control the working time of the radiation source 30 and the motor 20. 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 other connection methods. In one example, the power supply 70 can be installed in the handle 104.

[0147] In one embodiment, the power source 70 includes a rechargeable battery. In this way, the drying device 100 can be freed from the constraints of a wire harness when in use, thereby improving the user experience.

[0148] Specifically, the rechargeable battery can be a lithium-ion battery, or other rechargeable batteries. The rechargeable battery can be one or more, and multiple batteries can be connected in series, or in parallel, or in series and parallel. This is not specifically limited here. In addition, to facilitate the charging of the battery, the 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, which is not specifically limited here. In addition, to facilitate the removal of the battery, a battery cover can be provided on the handle 104, and the battery cover is removable to facilitate the removal and installation of the battery.

[0149] In one embodiment, the drying device 100 further includes a sensor, which senses the state of at least one of the drying device 100, the working environment of the drying device 100, the airflow or the radiation receptor. In this way, the operation of the drying device 100 can be controlled according to the signal of the sensor to improve the user experience.

[0150] Specifically, the state includes at least one of temperature, humidity, distance, posture, motion, flow, and flux.

[0151] The sensor may include at least one of a temperature sensor, a proximity / range sensor, a humidity sensor, a posture sensor, a flow sensor, and a flux sensor. The sensor may be placed, for example, on the airflow outlet 404 side of the housing 10 to monitor the state (e.g., humidity) of the dried object (i.e., the receiver of the airflow or radiation). The area to which the airflow is applied to the dried object may roughly include an infrared radiation area (e.g., a radiation spot) on the dried object. The airflow may accelerate the evaporation of water from the dried object by blowing away the wet air around the dried object. The airflow may also reduce the temperature of the dried object irradiated by the infrared radiation to avoid damage to the dried object. The temperature of the dried object and the water on the dried object must be maintained within an appropriate range to accelerate the evaporation of water from the dried object while keeping the dried object from overheating. An appropriate temperature range may be 50 to 60 degrees Celsius. The speed of the airflow blown onto the dried object may be adjusted to maintain the temperature of the dried object within an appropriate temperature range, for example, by blowing away hot water and excess heat. The proximity / distance sensor and the temperature sensor can work together to determine the temperature of the object being dried and adjust the speed of the air flow through feedback loop control to maintain a constant or programmed temperature of the object being dried. The object being dried can be hair, for example.

[0152] The posture sensor can collect the posture and movement of the drying device 100. For example, the posture sensor may include an inertial detection module (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 the corresponding axis is in motion. For example, when a user blows at a part of the dried object for a long time, the posture sensor detects that the drying device 100 has not moved for a long time. Then, in order to avoid damage to the part of the dried object, the control panel can control the speed of the motor 20 to reduce and / or the radiation intensity of the radiation source 30 according to the data output by the posture sensor, and can also control the drying device 100 to provide sound, light, vibration prompts, etc.

[0153] The flow sensor can detect the flow rate of the airflow, so that the control board can control the speed of the motor 20 to adapt to the temperature control of the dried object. 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.

[0154] In one embodiment, the sensor is disposed in the housing 10 and is located at the airflow outlet 404 of the air duct 40 and / or the opening of the radiation source 30. In this way, more accurate control of the airflow state and / or the radiation state can be achieved.

[0155] Specifically, the sensor is located at the airflow outlet 404 of the air duct 40, so that the state of the airflow leaving the drying device 100, such as flow rate, flux, temperature, humidity, etc., can be detected, and the state of the airflow leaving the drying device 100 can be more accurately controlled to avoid the internal environment of the drying device 100 affecting the detection of the airflow state. Similarly, the sensor is located at the opening of the radiation source 30, so that the state of the radiation leaving the drying device 100, such as intensity, etc., can be detected, and the state of the radiation leaving the drying device 100 can be more accurately controlled to avoid the internal environment of the drying device 100 affecting the detection of the radiation state.

[0156] In summary, the drying device 100 of the above embodiment includes but is not limited to the following technical effects:

[0157] 1. Compared with the conventional drying device 100 (e.g., the entire outer wall of the reflective cup 302 is directly in the air duct 40), excessive heat dissipation will affect the radiation efficiency, because excessive heat dissipation means that the light-emitting element 304 needs to convert additional electrical energy into thermal energy to maintain the temperature necessary for generating black body radiation. The configuration of the drying device 100 of the embodiment of the present application can appropriately reduce the temperature of the radiation source 30 and extend the service life of the light-emitting element 304, while not reducing the temperature too low to cause a waste of electrical energy (more electrical energy is used to maintain the temperature of the black body radiation).

[0158] 2. The excess heat of the radiation source 30 is carried away by the wind, causing the wind temperature to rise by several degrees (1 to 5 degrees). Although this is not enough to have a decisive impact on drying hair, it improves the physical sensation of the wind blowing on the human body, so that people will not feel blown by cold wind, thereby improving the user experience.

[0159] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0160] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A drying device, characterized in that: include: A shell, wherein an air duct is provided in the shell; a motor, located in the housing and used to generate airflow in the air duct, the motor being fixed by a damping device and arranged in the air duct; a radiation source, contained in the housing and used to generate infrared radiation and direct the infrared radiation to the outside of the housing, wherein the radiation source comprises a reflective cup, and the reflective cup is integrally connected to the air duct; The shock absorbing device is fixedly connected to the radiation source, the radiation source is fixed in the shell, the motor is fixedly connected to the radiation source through the shock absorbing device, and the vibration transmission path formed is: the motor, the shock absorbing device, the radiation source, and the shell; The shock absorbing device comprises a sleeve formed of an elastic material, wherein the sleeve comprises a clamping portion extending around the sleeve and flexibly coupled to at least one of the housing, the air duct and the radiation source; The motor comprises a driving part, and the sleeve is sleeved outside the driving part.

2. The drying device according to claim 1, characterized in that: The clamping portion is a protrusion formed of rubber material.

3. The drying device according to claim 1, characterized in that: The clamping portion is arranged on the surface of the sleeve.

4. The drying device according to claim 1, characterized in that: The number of the clamping part is single, and the single clamping part is arranged in an annular shape on the outer surface of the sleeve.

5. The drying device according to claim 1, characterized in that: There are multiple clamping parts, and the multiple clamping parts are evenly spaced along the circumference of the sleeve.

6. The drying device according to claim 1, characterized in that: The radiation source and the air duct are fixed in the shell.

7. The drying device according to claim 1, characterized in that: The radiation source is arranged on one side of the air flow outlet of the air duct.

8. The drying device according to claim 1, characterized in that: The radiation sources are arranged around the air flow outlet of the air duct.

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