WO2022261986A1

WO2022261986A1 - Drying device

Info

Publication number: WO2022261986A1
Application number: PCT/CN2021/101082
Authority: WO
Inventors: 顾令东; 刘楚枫
Original assignee: 深圳汝原科技有限公司
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-12-22
Also published as: CN114173606A

Abstract

A drying device (100). The drying device (100) is provided with a main air duct (101) and a first air duct (102), which communicates with the main air duct (101). The drying device (100) comprises a heating assembly (10) and a first flow-guiding member (20), wherein the heating assembly (10) can generate thermal radiation and form a hot spot area (103); at least a part of the first flow-guiding member (20) is located in the main air duct (101); and the first flow-guiding member (20) is used for guiding a part of airflow, which is in the main air duct (101), to the first air duct (102), and enabling the airflow flowing through the first air duct (102) to flow to the hot spot area (103).

Description

drying device

technical field

The present application relates to the field of household appliances, in particular to a drying device.

Background technique

Drying devices such as hair dryers mainly rely on the blown hot air to evaporate and take away the water on the target object. When the drying device is working, the heating component is always working to continuously provide heat. However, due to the wide range of heat radiation of the heating element, there are some areas that are easy to be scorched due to the continuous rise in temperature due to the lack of airflow to take away the heat, or the user is easily burned when the temperature is too high, or the target object is easily burned when it comes into contact with this part of the area. Burnt, resulting in a certain danger when the drying device is used.

Contents of the invention

Embodiments of the present application provide a drying device.

The drying device in the embodiment of the present application is formed with a main air duct and a first air duct communicating with the main air duct. The drying device includes a heating element and a first air guide, and the heating element can generate heat radiation and form a In the hot spot area, at least part of the first air guide is located in the main air channel, and the first air guide is used to guide part of the air flow in the main air channel to the first air channel, and make the air flow The airflow passing through the first air duct flows to the hot spot area.

In the drying device according to the embodiment of the present application, the drying device is formed with a first air channel communicating with the main air channel, at least part of the first air guide is located in the main air channel, and the first air guide can guide part of the air flow in the main air channel. lead to the first air channel, and make the air flow of the first air channel flow to the hot spot area, so as to take away the temperature of the hot spot area, and then reduce the temperature of the hot spot area, so that the temperature of the hot spot area is not easy to be too high when the drying device is working, The safety when the drying device is used is improved.

Additional aspects and advantages of the embodiments of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the embodiments of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and understandable from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of a planar assembly structure of a drying device in some embodiments of the present application;

FIG. 2 is an assembly schematic diagram of a partial structure of a drying device in some embodiments of the present application;

Fig. 3 is a three-dimensional exploded schematic diagram of a partial structure of a drying device in some embodiments of the present application;

Fig. 4 is a perspective cross-sectional schematic diagram of a partial structure of a drying device in some embodiments of the present application;

Fig. 5 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 6 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 7 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 8 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 9 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 10 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 11 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 12 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 13 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 14 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 15 is another schematic plan view of the drying device in some embodiments of the present application;

Fig. 16 is another schematic plan view of the drying device in some embodiments of the present application;

Fig. 17 is another schematic plan view of the drying device in some embodiments of the present application;

Figure 18 is a partial enlarged view of the drying device shown in Figure 4 in the XVIII area;

Fig. 19 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 20 is a schematic plan view of a drying device in some embodiments of the present application;

Fig. 21 is a schematic cross-sectional view of the first guide surface of the drying device in some embodiments of the present application;

Fig. 22 is an effect presentation diagram of a drying device without a first flow guide;

Fig. 23 is a diagram showing the effect of the drying device according to the embodiment of the present application.

detailed description

Embodiments of the present application will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings represent the same or similar elements or elements having the same or similar functions throughout.

In addition, the embodiments of the present application described below in conjunction with the accompanying drawings are exemplary, and are only used to explain the embodiments of the present application, and should not be construed as limiting the present application.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

Referring to FIGS. 1 to 4, the drying device 100 according to the embodiment of the present application is formed with a main air duct 101 and a first air duct 102 communicating with the main air duct 101. The drying device 100 includes a heating assembly 10 and a first air guide 20. , the heating assembly 10 can generate heat radiation and form a hot spot area 103; at least part of the first air guide 20 is located in the main air channel 101, and the first air guide 20 is used to guide part of the airflow in the main air channel 101 to the second An air duct 102 , and the airflow passing through the first air duct 102 flows to the hot spot area 103 .

In the drying device 100 of the embodiment of the present application, the drying device 100 is formed with a first air channel 102 communicating with the main air channel 101, at least part of the first air guide 20 is located in the main air channel 101, and the first air guide 20 can be Guide part of the airflow in the main air duct 101 to the first air duct 102, and make the air flow in the first air duct 102 flow to the hot spot area 103, so as to take away the temperature of the hot spot area 103, thereby reducing the temperature of the hot spot area 103 , so that the temperature of the hot spot area 103 is not easy to be too high when the drying device 100 is working, and the safety of the drying device 100 in use is improved.

Specifically, the drying device 100 may be equipment such as a hair dryer, a hand dryer, a clothes dryer, a heater, etc., which will not be listed here. The drying device 100 can be used to radiate heat toward the object to be dried, and then evaporate or take away liquid such as water on the object to be dried, so that the object to be dried becomes drier. For example, the drying device 100 can be used to dry or dry hair, hands, body, clothes and other objects. In the embodiment of the present application, the drying device 100 is taken as an example of a hair dryer for illustration. It can be understood that the drying device 100 is not limited to a hair dryer, and may be other types.

The drying device 100 will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 , the drying device 100 may include a heating element 10 , a first flow guide 20 , a casing 30 and a motor 40 .

The drying device 100 can be formed with a main air duct 101 and a first air duct 102 communicating with the main air duct 101. The air flow in the drying device 100 can flow to the outside through the main air duct 101 and then flow to target objects such as hair. Part of the air flow can flow to the first air channel 102 .

The casing 30 can provide installation space and protection for the functional devices of the drying device 100 (eg, the heating component 10 , circuit board, heat sink, motor, etc.), so that the functional devices are not easily damaged. Specifically, the casing 30 can form a receiving cavity, and functional devices such as the heating component 10 can be installed in the receiving cavity. The casing 30 may be made of plastic, metal and other materials, which are not listed here. The casing 30 can form a main air channel 101 , and the airflow can flow in the main air channel 101 .

Referring to FIG. 1 , the casing 30 may include a first shell 31 and a second shell 32 , and the first shell 31 may be connected to the second shell 32 . The first shell 31 can be used to be held by a user, so that the user can hold the drying device 100 in hand. The second shell 32 can be used for air outlet and also can be used for accommodating more functional devices. In one example, the first shell 31 and the second shell 32 are split structures, the first shell 31 and the second shell 32 can be detachably connected by clamping, screws, etc., the first shell 31 and the second shell 32 It can also be non-detachably connected by means of welding, gluing or the like. In another example, the first shell 31 and the second shell 32 may be integrally formed, and the first shell 31 and the second shell 32 may be integrally formed by injection molding, casting or the like.

The first shell 31 can be used to install some functional devices. For example, the drying device 100 may include a battery, and the battery may be installed in the first case 31 . Specifically, the battery may include a battery cell and a protective plate, both of which are located in the first shell 31 . The first shell 31 can be communicated with the second shell 32, the tail or the side wall of the first shell 31 can offer an air inlet, there can be a gap between the inner wall of the first shell 31 and the outer surface of the battery, the air flow in the second shell 32 When flowing, a negative pressure can be formed in the first shell 31, and the airflow in the external environment can enter the first shell 31 from the air inlet, and then the airflow in the first shell 31 can flow towards the second shell 32 through the gap, so that it can The heat of the first case 31 , the battery and other functional devices in the first case 31 is taken away, so that the temperature of the first case 31 is lowered, and the user is less likely to be burned when holding the first case 31 . First shell 31 also can be provided with air inlet, and the airflow of outside can enter first shell 31 through air inlet.

Further, please continue to refer to FIG. 1 , in some embodiments, the second shell 32 may include a first end 321 and a second end 322 opposite to each other. The second shell 32 can form the main air duct 101, and the first end 321 of the second shell 32 can be formed with honeycomb or other shaped air inlet holes, and the airflow outside the drying device 100 can enter the second shell 32 through the air inlet holes. in the cavity. The second end 322 of the second shell 32 can be formed with an air outlet, and the airflow in the second shell 32 can flow out of the drying device 100 through the air outlet and blow to the target object, thereby dissipating heat from the target object, while the airflow flows from the air inlet hole to the target object. The heat of the second shell 32 and the functional devices inside the second shell 32 can be taken away during the process of the air outlet, and the second shell 32 and the functional devices installed in the second shell 32 can be dissipated. Of course, the air inlet hole can also be located at other positions of the second shell 32, for example, any position between the first end 321 and the second end 322 of the second shell 32 can be provided with an air inlet hole, and there is no limitation here. , nor list them one by one. It is easy to understand that the air enters the second shell 32 from the air inlet of the first end 321, and flows along the second shell 32 until it flows out from the air outlet of the second end 322. This process means that the air flows along the main air duct. 101 through the process of the second shell 32.

Please refer to Fig. 1, the motor 40 can be installed in the casing 30, and can be used to form an airflow, and the airflow can bring the heat radiated by the heating element 10 and the heat generated by some functional devices to the target object such as hair, and then evaporate the heat on the target object. Liquid, to achieve the function of drying the target object. Specifically, the motor 40 may include a motor body 41 and a fan 42 , the fan 42 is connected to the motor body 41 , and when the motor body 41 rotates, the fan 42 can follow the rotation to drive the air flow in the casing 30 to form an airflow.

In one example, the motor 40 can be installed in the first shell 31. When the motor 40 is working, the air flows through the first shell 31 and blows to the second shell 32, and then flows out from the second shell 32. In this way, the user can hold the first The shell 31 absorbs the vibration generated by the motor. In another example, the motor 40 can be installed in the second shell 32, when the motor 40 works, an airflow can be formed in the second shell 32 and flow out from the second shell 32, and the airflow in the first shell 31 can flow to the second shell 32 Then flow out from the second shell 32, so that the installation space of the motor 40 is more sufficient, and the motor 40 of higher power can be selected for use, and more airflow can be blown to the hair in the same time, reducing the time required for drying.

Referring to FIG. 1 to FIG. 4 , the heating assembly 10 can be installed in the housing 30 , and the heating assembly 10 can be used to generate heat radiation. The heating assembly 10 can radiate heat to a certain range around. For example, the heating assembly 10 can radiate heat toward the main air duct 101, and the airflow in the main air duct 101 can take away the heat radiated from the heating assembly 10 to the main air duct 101, and The heat is transferred to the target object, and the heat generated by the heating component 10 can also be directly radiated to the target object, so that the liquid on the target object can be evaporated faster, or most of the heat of the heating component 10 can be directly radiated to the target object through thermal radiation. Transferred to the target object, a small part of the heat generated by itself is taken away by the airflow in the main air duct 101, and at the same time, it has the effect of dissipating heat from the heating component 10 and increasing the temperature of the air outlet.

Specifically, the heating assembly 10 can be installed in the second shell 32 and close to the air outlet of the second shell 32, so that the drying of the target object can be completed in a short time. That is, the closer the heating component 10 is to the target object, the more heat generated by the heating component 10 can be radiated to the target object, so that the target object can be dried faster.

Please continue to refer to FIGS. 1 to 4. In some embodiments, the heating assembly 10 may include a heating source 11 and a reflective cup 12. The number of the reflective cups 12 may be one or more, and the heating source 11 may be installed on the reflective cup 13. Inside, the heating source 11 can be used to generate heat and radiate the heat to a certain range around, and the reflective cup 12 can be detachably or non-detachably installed in the second shell 32 . The heating source 11 may include but not limited to at least one of halogen lamps, LEDs, ceramics, and graphene, all of which are not limited herein. In the embodiment of the present application, the heating source 11 is a halogen lamp.

The external space towards which the reflective cup 12 faces may constitute a hotspot area. The reflective cup 12 can include a mounting end 121 and an open end 122. The reflective cup 12 can be formed with a mounting cavity 123. One end of the mounting cavity 123 is the mounting end 121, and the opening at the other end of the mounting cavity 123 constitutes the opening end 122. Along the mounting end 121 The radial dimension of the installation cavity 123 may gradually increase toward the direction extending from the opening end 122 . The installation end 121 can be used to install the heating source 11, the hot spot area 103 can be the area enclosed by the open end 122, or along the direction that the installation end 121 extends toward the open end 122, the hot spot area 103 can be directly opposite to the open end 122 ( That is, the area facing ), or the cavity wall of the installation cavity 123 between the open end 122 and the installation end 121 may be the hot spot area 103 . In some embodiments, the installation cover 13 is provided with one reflective cup 12 , and there are multiple heating sources 11 , and multiple heating sources 11 can be installed in one reflective cup 12 . Or, in some embodiments, multiple reflective cups 12 may be provided, the number of heating sources 11 is multiple, the number of heating sources 11 and reflective cups 12 is the same, and multiple heating sources 11 are correspondingly installed on multiple reflective cups 12 Inside. Or, in some embodiments, a plurality of reflective cups 12 can be provided, the number of heating sources 11 is multiple, the quantity of heating sources 11 is more than the quantity of reflective cups 12, and two, There are three or more heating sources 11 , and one heating source 11 can be installed in some reflective cups 12 . Wherein, the plurality of reflective cups 12 may be of an integrated structure, or the plurality of reflective cups 12 may also be of a split structure.

Further, please refer to FIG. 2 to FIG. 5 together. In one embodiment, the first air guide 20 can be arranged at the air outlet 1011 of the main air duct 101, that is, the first air guide 20 can be arranged at the main air outlet 1011. At the end 1012 of the channel 101 close to the air outlet 1011 , the first air guide 20 can cover at least part of the air outlet 1011 of the main air channel 101 , so that the air flow from the air outlet 1011 can reach the first air guide 20 . Moreover, the first air guide 20 may be spaced from the end surface 1013 of the air outlet 1011 of the main air channel 101 , and the first air guide 20 and the end surface 1013 of the air outlet 1011 may form the first air channel 102 . The first deflector 20 may have a ring shape. Part of the first air guide 20 can extend into the main air duct 101 , and guide part of the airflow in the main air duct 101 to the hot spot area 103 from inside to outside along the circumferential direction of the main air duct 101 .

Further, please refer to FIG. 6 , in another embodiment, the side wall 1010 of the main air duct 101 can be formed with a ventilation hole 1321 , one end of the ventilation hole 1321 can communicate with the main air duct 101 , and the other end of the ventilation hole 1321 can be Facing the hotspot area, it can be understood that the ventilation hole 1321 can form the first air channel 102 , and along the flow direction of the airflow in the main air channel 101 , the upper edge of the ventilation hole 1321 forms the first air guide 20 . Wherein, the ventilation hole 1321 may be a straight cylindrical hole, or the ventilation hole 1321 may be formed by connecting a plurality of cylindrical holes.

Specifically, the ventilation hole 1321 can pass through the side wall 1010 of the main air duct 101 and can face the hot spot area 103 , and the airflow in the main air duct 101 can blow to the hot spot area 103 through the ventilation hole. Wherein, the side wall 1010 of the main air duct 101 may be provided with a ventilation hole 1321 at a position opposite to the hot spot area 103 formed by each heating source 11 , and it can be understood that the number of ventilation holes 1321 may be multiple. Further, the inner surface of the side wall of the main air duct 101 above the ventilation hole 1321 is protruding toward the center line of the main air duct 101 to form a protrusion 1322, and part of the airflow in the main air duct 101 can flow to The protruding part 1322 can guide the part of the air flow into the ventilation hole 1321 , and at this time, the protruding part 1322 and the upper edge of the ventilation hole together form the first air guide 20 .

Referring to Fig. 7, in some embodiments, the side wall 1010 of the main air duct 101 can be provided with a ventilation duct 1016, the ventilation duct 1016 can form the first air duct 102, and one end of the ventilation duct 1016 can communicate with the main air duct 101, The other end of the air duct 1016 can face the hot spot area 103 , and the air duct 1016 can form the first air guide 20 . The ventilation duct 1016 can extend into the main air duct 101 , so that the air flow can flow into the ventilation duct 1016 when flowing in the main air duct 101 . Alternatively, one end of the ventilation duct 1016 is a hole formed on the side wall 1010 of the main air duct 101 , which prevents the end of the ventilation duct 1016 inserted into the main air duct 101 from obstructing the air flow while guiding the wind. Ventilation duct 1016 can comprise a plurality of air pipes (not shown in the figure), and air duct can be formed by materials such as plastics, rubber, silica gel, and ventilation duct 1016 can be embedded in the side wall of main air duct 101, or the side wall of main air duct 101 An installation hole for passing through the ventilation duct 1016 may be opened, and the air pipe may pass through the installation hole and then be fixed to the side wall 1010 of the main air duct 101 by glue. Air pipes can be arranged around the main air duct 101, and multiple air pipes can be closely connected or arranged at intervals.

Further, the ventilation duct 1016 can be in a bent state, the ventilation duct 1016 can include a first section (not shown) and a second section (not shown), the first section can be a vertical section, and can be arranged in the main air duct 101 and close to the side wall 1010 of the main air duct 101, the second section can be connected to the first section, and the second section can be bent at a certain angle relative to the first section, for example, the second section can be bent 45 degrees relative to the first section degrees, 60 degrees, 90 degrees, 120 degrees or more, and the second section can pass through the side wall 1010 of the main air duct 101 , and even protrude from the side wall 1010 of the main air duct 101 . Of course, in other embodiments, the ventilation duct 1016 may also include a third segment, a fourth segment or more segments, which will not be described in detail here.

Further, please refer to FIG. 10 , FIG. 11 , FIG. 16 and FIG. 17 . In one embodiment, the second shell 32 can surround the reflective cup 12 , and the inner surface of the second shell 32 and the outer surface of the reflective cup 12 There is a gap, the gap communicates with the main air duct 101 , and the gap may be a part of the main air duct 101 . It can be understood that the shape of the main air duct 101 can be a ring column (that is, a hollow cylinder in the middle), and the main air duct 101 can surround the outside of the reflective cup 12, then the main air duct 101 surrounds the heating assembly 10, and the main air duct 101 can surround the heating assembly 10. 101 also surrounds the hotspot area 103 .

The first air guide 20 can be installed on the housing 30 and cover part of the main air duct 101 close to the heating assembly 10, and is spaced from the end surface 1013 of the air outlet 1011. The first air guide 20 can turn the main air duct from outside to inside. Part of the airflow in the air duct 101 is guided to the hot spot area 103 , as shown in FIG. 11 . Certainly, in other embodiments, the first deflector 20 may also be installed on the reflective cup 12 and spaced from the end surface of the reflective cup 12 close to the air outlet 1011 , as shown in FIG. 10 . For example, the first deflector 20 may include a plurality of clips arranged at intervals, and the clips may be clipped on the side wall of the reflective cup 12 . Alternatively, the first deflector 20 can be connected to the housing 30 and also to the reflective cup 12 , so that the first deflector 20 is more stable.

Please refer to FIGS. 2 to 4. In some embodiments, the heating assembly 10 may further include an installation cover 13, and a plurality of reflective cups 12 may be arranged inside the installation cover 13, and the plurality of reflective cups 12 may be formed with the installation cover 13, or A plurality of reflector cups 12 can be assembled to form a mounting cover 13 . When the number of the reflective cup 12 is one, the side wall of the reflective cup 12 can be a mounting cover 13 . The installation cover 13 can have an end surface 1301 facing the hot spot area 103, and the end surface 1301 can be opened with a through hole 131, which can communicate with the main air duct 103, and a plurality of reflector cups 12 and a plurality of heating sources 11 can be arranged around the through hole 131 , it can be understood that the heating assembly 10 is located between the main air duct 101 and the casing 30 . The installation cover 13 includes an inner side wall 132 located in the through hole 131 and an outer side wall 133 opposite to the inner side wall 132. The outer side wall 133 can be used to contact the inner surface of the second shell 32. The end face 1301 is located between the inner side wall 132 and the outer side wall. The area between 133 can form the hot spot area 103, or the outer space opposite the area between the inner side wall 132 and the outer side wall 133 of the end surface 1301 can form the hot spot area 103, and the airflow in the drying device 100 can flow out from the through hole 131, That is, the through hole 131 may form a part of the main air duct 101 . In this way, since a plurality of heating sources 11 are arranged around the main air duct 101, the distribution of the heating sources 11 is more uniform, so that the heat generated by the heating assembly 10 can be conducted in a wider range, and the target object can be dried in a larger area at the same time.

Specifically, the end of the installation cover 13 towards the motor 40 can be installed on the bracket of the motor 40 or the casing of the motor 40, and the airflow flowing out from the motor 40 can flow out of the drying device 100 after passing through the outer surface of the installation cover 13, and the heating source The heat generated by 11 can radiate to the installation cover 13, and then the temperature of the installation cover 13 can be taken away when the airflow flows through the installation cover 13, so as to avoid the temperature of the installation cover 13 from being too high and burnt.

Please refer to FIG. 8 and FIG. 9. In some embodiments, the heating assembly 10 is accommodated in the housing 30, and there may be a gap between the outer surface of the side wall 134 of the installation cover 13 and the inner surface of the housing 30. It can be understood that , there is a gap between the edge of the end face 1301 of the installation cover 13 and the inner surface of the housing 30, the main air duct 101 may include a first sub-main air duct 1014 and a second sub-main air duct 1015, the first sub-main air duct 1014 It can be formed by the through hole 131 of the installation cover 13, the second sub-main air duct 1015 can be formed by the outer surface of the side wall 134 of the installation cover 13 and the inner surface of the housing 30, and the airflow in the drying device 100 can be obtained from the first sub-main air duct. The channel 1014 and the second sub-main air channel 1015 flow out.

In the embodiment shown in FIG. 8 , the first deflector 20 can be installed at the air outlet of the first sub-main air duct 1014, and is spaced from the end surface of the air outlet of the first sub-main air duct 1014 to form a first air flow. channel 102, the first air channel 102 communicates with the first sub-main air channel 1014, part of the first air guide 20 can extend into the first sub-main air channel 1014, and the first air guide 20 can face the direction close to the hot spot area 103 extended, and used to direct part of the airflow in the first sub-main air duct 1014 to the hot spot area 103 .

Further, please refer to FIG. 12 , in some embodiments, the drying device 100 can also be formed with a second air channel 104 communicating with the second sub-main air channel 1015, and the drying device 100 can also include a second air guide 50, The second air guide 50 may be installed on the housing 30 and located at the end of the air outlet of the second sub-main air duct 1015 , and the second air guide 50 may extend from the end face of the housing 30 toward the hot spot area 103 , or the second air guide 50 can be inclined toward the hot spot area 103, so that the second air guide 50 can guide part of the airflow in the second sub-main air channel 1015 to the second air channel 104, and then flow to the hot spot area 103 . The airflow flowing out from the second air passage 104 can gather at the hot spot area 103 with the airflow flowing out from the first air duct 102, and take away the heat of the hot spot area 103 together, and then can reduce the temperature of the hot spot area 103 faster, and the hot spot area The temperature of 103 can be lowered to a lower level, which further improves the safety of the drying device 100 during operation.

In the embodiment shown in FIG. 9 , in some other embodiments, the first air guide 20 can be installed on the housing 30 and located at the air outlet of the second sub-main air duct 1015, the first air guide 20 can extend from the first air guide 20 and the end surface of the housing 30 towards the direction close to the hot spot area 103, or the first air guide 20 can be inclined toward the hot spot area 103, and the first air guide 20 can be connected with the reflector cup 12 The distance between the end faces of the first deflector 20 can form the first air channel 102, the first air channel 102 can communicate with the second sub-main air channel 1015, and the air flow out of the second sub-main air channel 1015 can be absorbed by the first air channel. The air guide 20 leads to the hotspot area 103 .

Further, referring to FIG. 13 , in some embodiments, the drying device 100 can also be formed with a second air channel 104 communicating with the first sub-main air channel 1014 , and the drying device 100 can also include a second air guide 50 , The second air guide 50 can be installed on the housing 30 and located at the end of the air outlet of the first sub-main air duct 1014, part of the second air guide 50 can extend into the first sub-main air duct 1014, and the second air guide 50 can extend into the first sub main air duct 1014. The air guide 50 can be spaced from the outlet of the first sub-main air duct 1014 to form the second air duct 104, and the second air guide 50 can be inclined toward the hot spot area 103 or extend toward the hot spot area 103, so that the second air guide 50 50 can guide part of the airflow in the first sub-main air duct 1014 to the second air duct 104 and flow to the hot spot area 103 . The airflow flowing out from the second air passage 104 can gather at the hot spot area 103 with the airflow flowing out from the first air duct 102, and take away the heat of the hot spot area 103 together, and then can reduce the temperature of the hot spot area 103 faster, and the hot spot area The temperature of 103 can be lowered to a lower level, which further improves the safety of the drying device 100 during operation.

Referring to FIG. 10 and FIG. 11 , in some embodiments, the heating assembly 10 is located in the main air duct 101 . The outer surface of the side wall 134 of the installation cover 13 can have a gap with the inner surface of the housing 30, and there is a gap between the edge of the end face 1301 of the installation cover 13 and the inner surface of the housing 30, and the gap can communicate with the main air duct 101 , so that the distance between the side wall of the installation cover 13 and the inner surface of the housing 30 can form part of the main air duct 101 , that is, the main air duct 101 is located outside the installation cover 13 in this embodiment. The installation cover 13 can be provided with one or more reflective cups 12, the area surrounded by the open ends 122 of the plurality of reflective cups 12, or the outer area facing the area forms a hotspot area 103, and one or more reflective cups 12 can be installed A plurality of heating sources 11, in one example, the installation cover 13 is provided with a reflective cup 12, and a heating source 11 is installed in a reflective cup 12; In another example, the installation cover 13 is provided with a reflective cup 12, a A plurality of heating sources 11 are installed in the reflective cup 12 .

Further, the heating assembly 10 may be located at one side of the main air duct 101 . In the embodiment shown in FIG. 15 , the mounting cover 13 may include a first side wall (not shown) and a second side wall (not shown), and the first side wall and the second side wall may form a ring, For example, the shape of the first side wall can be semicircular, the shape of the second side wall can be linear, the first side wall can be in contact with the inner surface of the housing 30, and the second side wall can be in contact with the inner surface of the housing 30. intervals to form the main air duct 101. It can be understood that the heating assembly 10 is located on one side of the main air duct 101 . The first air guide 20 may be installed on the second side wall or the housing 30, or the first air guide 20 may be installed on both the housing 30 and the second side wall, and the first air guide 20 may be Covering the second side wall and spaced from the end face of the second side wall near the air outlet 1011, the first air guide 20 and the end face of the second side wall near the air outlet 1011 form a first air channel 102, the main air channel 101 The airflow inside can be guided by the first air guide 20 to the side where the heating component 10 is located, and flow through the hot spot area 103 .

Please refer to Fig. 2 and Fig. 5. In some embodiments, the heating source 11 may include a light source 111, which can emit light and radiate heat after being powered on. In the same period of time, the greater the power of the light source 111, the more heat will be generated. . The light source 111 utilizes heat radiation to conduct heat conduction, and more heat energy is directly transferred to the target object and the surrounding moisture through heat conduction, which can reduce unnecessary energy loss, and the drying device 100 has higher working efficiency. Wherein, the light source 111 includes but not limited to halogen lamps and LED lamps.

Further, the drying device 100 may further include an optical element 60 disposed on the light path of the light source 111, the optical element 60 may be used to filter or reflect the visible light emitted by the light source 111, at least part of the hot spot area 103 may be formed on the optical element 60 or its The outer area to face. As a result, most of the visible light emitted by the light source 111 will be filtered or emitted, and even completely unable to enter the external environment. It will be dazzling and not easy to cause damage to human eyes, which improves the user experience.

Specifically, the optical element 60 can be installed on the end surface 1301 of the reflector 12 close to the air outlet 1011 of the main air duct 101 , and the optical element 60 can be installed on the second shell 32 or the reflector 12 by bonding, clipping and other methods. Specifically, the optical element 60 can cover the open end 122′ of the reflective cup 12 . In one example, the optical element 60 can be made of light-shielding materials, such as wood, black plastic, etc., which are not listed here. Or, in another example, the optical element 60 may include a light-transmitting part and a light-shielding part, the light-transmitting part may be made of materials such as glass and plastic, visible light may pass through the light-transmitting part, and the light-shielding part may block the light emitted by the light source 111. For visible light, the light-shielding part may be formed of a light-shielding material, or the light-shielding part may be a film coated on the light-transmitting part, which will not be listed here. Wherein, the light-shielding part may be closer to the light source 111 than the light-transmitting part, and the light-shielding part may be closer to the light source 111 than the light-transmitting part. In one example, the optical element 60 may include a reflector, for example, the optical element 60 may include a silver film, and when visible light reaches the optical element 60, it may be reflected by the reflector to the side wall of the mounting cover 13 or reflected back to the light source 111, so that it cannot pass through Optical element 60.

The optical element 60 is located on the light path of the light source 111 , so the optical element 60 can be continuously irradiated by the light source 111 , and the temperature of the optical element 60 will continue to rise, and the optical element 60 or its facing external area can form a hot spot area 103 . The first air guide 20 can be spaced from the end surface of the optical element 60 away from the light source 111, and the first air guide 20 can guide part of the airflow in the main air duct 101 to the optical element 60 to dissipate heat from the optical element 60 and reduce the optical element 60 temperature.

Referring to FIG. 2 , FIG. 3 and FIG. 5 , the optical element 60 can allow invisible light such as infrared light and ultraviolet light in the light emitted by the light source 111 to pass through. The optical element 60 may include a light exit portion 61. The invisible light emitted by the light source 111 enters the outside through the light exit portion 61, and the temperature of the light exit portion 61 can continue to rise. The light exit portion 61 can form at least part of the hot spot area 103. The first flow guide 20 can guide the airflow to flow to the light emitting part to dissipate heat from the light emitting part 61 . The light exit portion 61 may include a light exit plane 611 in contact with the outside world, at least part of the hot spot area 103 may be formed on the light exit plane 611, the first air guide 20 may be spaced from the light exit plane 611, and at least part of the airflow flowing out from the first air duct 102 It can flow through the light-emitting plane 611 to dissipate heat from the light-emitting plane 611 , reduce the temperature of the light-emitting plane 611 , and prevent the target object from being burned due to contact with the light-emitting plane 611 . In other embodiments, the light exit portion 61 is also configured as other three-dimensional regular or irregular structures, such as a three-dimensional concave-convex shape, a plurality of outwardly extending convex structures, etc., to achieve different light emission, heat dissipation, refraction, Absorb effects such as specific wave bands, form different types of hot spot areas 103 according to actual shapes, and adjust the airflow direction of the first air duct 102 accordingly to meet the heat dissipation of the hot spot areas 103 . For example, when the light exit portion 61 has an upwardly extending convex structure as shown in FIG. Heat dissipation in the hot spot area 103 .

Of course, in other embodiments, the optical element 60 may also allow some visible light to pass through, which is not limited here.

Please refer to FIG. 1 to FIG. 5 , at least part of the first air guide 20 is located in the main air duct 101, so that the air flow can flow through the first air guide 20 and be absorbed by the first air guide 20 when flowing in the main air duct 101. Guided into the first air channel 102; when the first air guide 20 is installed on the housing 30, the first air guide 20 can form the first air channel 102 with the end face 1013 of the air outlet 1011; When the component 20 is installed on the installation cover 13 , the first air guide 20 and the end surface of the inner side wall 132 of the installation cover 13 can form the first air channel 102 . Along the direction from the main air duct 101 to the hot spot area 103 , the first air duct 102 can face the hot spot area 103 , so that the airflow from the first air duct 102 can flow to the hot spot area 103 and dissipate heat from the hot spot area 103 .

In some embodiments, the angle between the direction of the airflow flowing to the hotspot area 103 and the flow direction of the airflow in the main air duct 101 is greater than or equal to 30 degrees, thus, the amount of airflow flowing to the hotspot area 103 is more , can take away more heat from the hot spot area 103, and speed up the cooling speed of the hot spot area 103. The included angle between the direction of the airflow flowing to the hot spot area 103 and the flow direction of the airflow in the main air duct 101 can be 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 60 degrees, 75 degrees, 80 degrees , 90 degrees or more degrees, not listed here. In an embodiment, the direction of the airflow flowing to the hotspot area 103 may be perpendicular to the flow direction of the airflow in the main air duct 101 , so that the airflow flows through the hotspot area 103 in parallel.

Referring to FIGS. 2 to 4 , in some embodiments, the drying device 100 may further include a mounting structure 70 , the mounting structure 70 may be used for mounting the first air guide 20 , and the mounting structure 70 may also be used for the air flow generated by the motor 40 To guide the flow, the installation structure 70 can be installed downstream of the motor 40 along the flow direction of the airflow in the main air duct 101 . The installation structure 70 can be installed in the through hole 131 of the installation cover 13 . Please refer to Figure 18, the inner side wall 132 of the installation cover 13 can be provided with a card hole 1321 and a card slot 1322 communicating with the card hole 1321, the installation structure 70 can include a card 71 and a card post 72 connected to the card 71, and the card 71 can be inserted In the card slot 1322, the card post 72 can be stretched into the card hole. The card 71 cooperates with the card slot 1322 to fix the installation structure 70 on the installation cover 13. 13 relative rotation takes place. Of course, in other embodiments, the mounting structure 70 may also be provided with a clamping hole, and the inner wall of the mounting cover 13 may be provided with a clamping column. Wherein, the card slot 1322 may be a slot with one side open, or the card slot 1322 may be a slot with two sides open. In the embodiment shown in FIG. 18 , the slot 1322 is a slot open on both sides, so that the inner side wall 132 is formed with a step structure, the end surface of the card 71 can be in contact with the step surface of the step structure, and the outer surface of the card 71 can be in contact with the step surface of the step structure. The sides of the card slot 1322 are in contact.

The installation structure 70 may further include an installation column 73 and a flow guiding rib 74 disposed on the installation column 73 . The outer surface of the mounting column 73 can be spaced from the inner surface of the through hole 131 to form the main air duct 101. Along the flow direction of the airflow in the main air duct 101, the outer diameter of the mounting column 73 can be gradually reduced, so that part of the air flow along the The outer surface of the mounting column can move closer to the center of the mounting column when flowing, and flow out of the drying device 100 more smoothly. The airflow formed by the motor 40 can flow through the guide ribs 74 , and the guide ribs 74 can guide the airflow so that the airflow out of the drying device 100 is more directional and smoother. The card 71 can be connected to an end of the flow guide rib 74 away from the mounting post 73 . Moreover, the top surface of the guide rib 74 can abut against the inner surface of the through hole 131 to axially position the installation structure 70, so that the axis of the installation structure 70 coincides with the axial direction of the through hole 131, thereby avoiding the swing phenomenon. For example, the inner surface of the through hole 131 can be provided with an abutment groove, and the top surface of the flow guide rib 74 can extend into the abutment groove, and the abutment groove and the flow guide rib 74 cooperate to fix the installation position of the installation structure 70 . For another example, the flow guide rib 74 can be interference-fitted with the through hole 131 , so that the frictional force between the top surface of the flow guide rib 74 and the inner surface of the through hole 123 is relatively large, so that the mounting structure 70 is not easy to loosen.

Please refer to FIG. 2 to FIG. 5, the first air guide 20 can be made of plastic, metal and other materials, so that the first air guide 20 can have better rigidity, when the airflow blows to the first air guide 20 A deflector 20 is not easily deformed. The first flow guide 20 can be installed on the housing 30, the first flow guide 20 can also be installed on the installation cover 11, and the second flow guide 20 can also be installed on the installation cover 11 through the installation structure 70, here No restrictions.

In some embodiments, the first deflector 20 may include a mounting portion 21 , a rib 22 and a deflector 23 . The installation part 21 can be installed on the installation column 73 , so that the first air guide 20 can be fixedly installed at the air outlet 1011 of the main air duct 101 . In some of these embodiments, the mounting part 21 can be non-detachably mounted on the end of the mounting column 73 away from the motor 40 by means of gluing, welding, etc.; The buckle or the like is detachably mounted on the end of the mounting column 73 away from the motor 40 .

In the embodiment shown in FIG. 3 , the mounting portion 21 may be provided with a positioning post, and the mounting post 73 may be provided with a positioning hole, and the positioning post may be inserted into the positioning hole to determine the installation position of the first flow guiding member 20 . The mounting structure 70 can also include screws, the mounting portion 21 can be provided with a first connecting hole through which the mounting column 73 can be provided with a second connecting hole opposite to the first connecting hole, and the screw can pass through the first connecting hole and extend into The second connection hole is locked in the second connection hole, so as to fix the first air guide 20 on the installation structure 70 . Of course, it is also possible that the installation portion 21 may be provided with a positioning hole, the mounting post 73 may be provided with a positioning post, and the positioning post may be inserted into the positioning hole to determine the installation position of the first flow guiding member 20 .

The ribs 22 can be connected to the installation part 21 and extend away from the installation part 21. The ribs 22 can cooperate with the flow guide ribs 74 to guide the flow direction of the airflow in the main air duct 101 together with the flow guide ribs 74. Make the outflow airflow more directional and smoother. Further, in one example, along the air flow direction in the main air duct 101 , the thickness of the ribs 22 may gradually decrease, so as to make the air flow more convergent and facilitate drying of a smaller target area. In another example, along the airflow direction in the main air duct 101 , the thickness of the ribs 22 can gradually increase to make the airflow more divergent, increase the radiation area of the airflow, and facilitate drying of a larger target area.

The air guide part 23 can be connected to an end of the rib part 22 away from the installation part 21 , and the air guide part 23 can be used to guide the air flow from the main air duct 101 to the hot spot area 103 . The air guiding part 23 can form a first air passage 102 at a distance from the end surface of the installation structure 70 away from the motor 40 or the end surface of the installation cover 13 away from the motor 40 . Part of the guide part 23 can be located in the main air duct 101 , so that the airflow in the main air duct 101 can flow through the guide part 23 , and the guide part 23 can guide the airflow to the hot spot area 103 . The flow guide part 23 may be in a complete ring shape, or the flow guide part 23 may be in a broken ring shape, for example, a plurality of broken plate shapes.

Please refer to FIG. 3 , the installation part 21 , the rib part 22 and the flow guide part 23 can be integrally formed, for example, the installation part 21 , the rib part 22 and the flow guide part 23 can be integrally formed by injection molding, casting and the like. Alternatively, the installation part 21, the rib part 22 and the flow guide part 23 can be formed separately, for example, the installation part 21, the rib part 22 and the flow guide part 23 can be assembled together by welding, clamping, bonding and the like.

Of course, in other embodiments, the first air guide 20 may not be as shown in FIG. , or a connecting portion (not shown) of the mounting structure 70, the connecting portion may be a clip or the like, which is not limited here.

Referring to FIG. 5 and FIG. 18 , the first air guide 20 may include a first air guide surface 24 opposite to the airflow flowing in the main air duct 101 , and the first air guide surface 24 may be used to guide the air flow in the main air duct 101 . Part of the airflow flows to the hot spot area 103 to dissipate heat from the hot spot area 103 . The first guide surface 24 may include one or a combination of curved surfaces, inclined surfaces, and planes. The first guide surface 24 may include regular curved surfaces or irregular curved surfaces, which are not expanded one by one here.

Referring to FIG. 19 , in some embodiments, the first guide surface 24 includes at least one inclined surface, and along the flow direction of the airflow in the main air duct 101 , the inclined surface is inclined toward the hot spot area 103 at a predetermined angle. It can be understood that the first guide surface 24 may include one, two, three, four or more inclined surfaces with different inclination angles, which are not listed here. The inclined surface is inclined towards the hot spot area 103 at a predetermined angle, and the predetermined angle may be 30°, 40°, 45°, 55°, 60°, 70°, 75°, 80°, 90°, 100°, 120° or more angles, They are not listed here. Wherein, the predetermined angle refers to the angle between the slope and the flow direction of the airflow in the main air duct 101 . In this way, since the slope is inclined toward the hot spot area 103 , the first air guide surface 24 can guide the airflow to the hot spot area 103 better, and the first air guide surface 24 can guide more airflow to the hot spot area 103 . At the same time, the inclined surface of the first guide surface 24 makes the air flow less likely to be hindered when flowing along the first surface, and the flow is smoother.

Please refer to FIG. 20 , in some embodiments, the first guide surface 24 may include a plurality of sub-slopes 241, and the sub-slopes 2411 closest to the main air duct 101 may follow the flow direction of the airflow in the main air duct 101 and be close to hot spots. The direction of the area 103 extends obliquely, and the inclination angle of the sub-incline 2412 farthest from the main air duct 101 is larger than the inclination angle of the sub-incline 241 closest to the main air duct 101 . Thus, the first air guide surface 24 can better guide part of the airflow in the main air duct 101 to the hot spot area 103, and the air flow flows more smoothly on the first air guide surface 24 and flows out from the first air duct 102 The air flow will flow more towards the hot spot area 103 .

Specifically, the first guide surface 24 may include two, three, four, five or more sub-slopes 241, and the plurality of sub-slopes 241 may connect end to end to form the first guide surface 24. Part of the airflow can flow sequentially from the sub-incline 241 closest to the main air duct 101 to the sub-incline 241 farthest from the main air duct 101 . It should be noted that the inclination angle refers to the angle between the sub-incline 241 and the flow direction of the airflow in the main air duct 101 . Define the sub-slope 241 closest to the main air duct 101 as the first sub-slope 2411, the sub-slope 241 farthest from the main air duct 101 is the second sub-slope 2412, the inclination angle of the first sub-slope 2411 is α1, the second sub-slope The inclination angle of 2412 is α2, and the inclination angle of any sub-incline 241 between the first sub-incline 2411 and the second sub-incline 2412 can be between α1 and α2, or can be greater than α2, or smaller than α1, here No restrictions. In one embodiment, from the first sub-incline 2411 to the second sub-incline 2412, the inclination angles of the plurality of sub-inclines 241 gradually decrease, so that when the airflow flows from the first sub-incline 241 to the second sub-incline 241, The airflow is smoother and less prone to backflow.

Of course, in other embodiments, the inclination angle of the first sub-slope 241 can also be greater than the inclination angle of the second sub-slope 241, or the inclination angle of the first sub-slope 241 can also be equal to the inclination angle of the second sub-slope 241, There is no limitation here.

Please refer to FIG. 4, FIG. 5 and FIG. 21. In some embodiments, the first guide surface 24 is a curved surface, which is convex along the flow direction of the airflow in the main air duct 101, so that the first guide surface 24 can More airflow is directed to the hot spot area 103 more smoothly, thereby reducing the temperature of the hot spot area 103 faster. Specifically, the opening of the first air guide surface 24 may face downward or may face the hot spot area 103, so that the airflow may flow to the hot spot area 103 along the first air guide surface 24, and the opening of the first air guide surface 24 away from the main air duct 101 The tangent plane at one end may be parallel to or form an included angle with the end surface 1013 of the air outlet 1011 . In one example, from the main air duct 101 to the hot spot area 103, the angle between the tangent of each point of the first air guide surface 24 and the end surface 1013 of the air outlet 1011 gradually decreases, or the first air guide surface The angle between the tangent of each point of 24 and the end surface 1013 of the air outlet 1011 gradually decreases to zero and then gradually increases.

Further, please refer to Fig. 4, Fig. 5 and Fig. 21, the curved surface of the first guide surface 24 may include a plurality of sub-curved surfaces connected in sequence, at least one sub-curved surface extends exponentially, and the sub-curved surfaces extending exponentially may have more Good guiding effect, so that the airflow can flow to the hot spot area 103 more accurately and smoothly. Wherein, the number of exponentially extending sub-surfaces may be one, two, three, four or more, which are not listed here. For example, in one embodiment, the plurality of sub-surfaces each extend exponentially. For another example, the sub-curved surface closest to the main air channel 101 extends exponentially to guide the airflow in the main air channel 101 to the first air channel 102 more smoothly. Alternatively, multiple sub-curved surfaces close to the main air duct 101 extend exponentially. It should be noted that the exponential extension of the sub-surface may specifically mean that the contour of the sub-surface extends exponentially such as a quadratic function curve, a cubic function curve, a quartic function curve, or a quintic function curve, such as a parabola. The direction of the exponential extension may extend toward the hot spot area 103 or extend away from the hot spot area 103 , which is not limited here.

Please refer to FIG. 4, FIG. 5 and FIG. 21. In some embodiments, along the direction from the main air duct 101 to the hot spot area 103, the first guide surface 24 includes a first sub-curved surface 242 and a second sub-curved surface connected in sequence. 243 and the first sub-plane 244. The first sub-curved surface 242 can be located in the main air duct 101 , and the first sub-curved surface 242 can divide the airflow flowing in the main air duct 101 so that part of the airflow enters the first air duct 102 . For example, the contour of the first sub-curved surface 242 can be a section of arc, and the arc can be located in the main air duct 101, and one end of the arc can extend along the flow direction of the airflow in the main air duct 101, and the other end of the arc can face the hot spot. The area 103 is extended so that the airflow close to the edge in the main air duct 101 can generate a diversion when reaching the first sub-curved surface 242 , and part of the air flow can flow to the second sub-curved surface 243 and then leave the main air duct 101 . Of course, the contour of the first sub-curved surface 242 is not limited to a circular arc, and may also be a curve with relatively small curvature such as an ellipse or a drop-shaped front edge, or directly adopt a wedge-shaped structure, which are not listed here.

The second sub-curved surface 243 can extend toward the hot spot area 103 , and the second sub-curved surface 243 can be used to guide the airflow flowing into the first air duct 102 towards the hot spot area 103 , so that the airflow can flow to the hot spot area 103 . Specifically, the opening of the contour line of the second sub-curved surface 243 faces toward the hot spot area 103, or the direction of the opening is opposite to the flow direction of the airflow in the main air duct 101, so that the airflow can flow toward the hot spot when flowing out from the second sub-curved surface 243. Area 103 streams to go. Further, the second sub-curved surface 243 may extend exponentially, so that the airflow flows through the second air guide surface 25 more smoothly, and the directionality after flowing out of the second sub-curved surface 243 is better.

Please continue to refer to FIG. 4, FIG. 5 and FIG. 21. In one embodiment, along the guiding direction of the first guide surface 24, the distance between the tangent of each point of the second sub-curved surface 243 and the end surface 1013 of the air outlet 1011 is The included angle gradually decreases. In the embodiment shown in FIG. 20 , the shape of the contour line of the second sub-curved surface 243 can be seen, and the guiding direction of the first guide surface 24 is that after the airflow in the main air duct 101 enters the first air duct 102 , the flow direction of the airflow in the first air channel 102 . Along the guiding direction of the first guide surface 24, the angle between the tangent line of each point of the second sub-curved surface 243 and the end surface of the reflector 12 close to the air outlet 1011 gradually decreases, and the end surface and the end surface 1013 of the air outlet 1011 Parallel, for example, in Fig. 21, along the guiding direction of the first guide surface 24, point B is behind point A, and the angle θ1 between the tangent line of point A and the end surface is greater than that between the tangent line of point B and the end surface 1301 2, the second sub-curved surface 243 gradually extends toward the direction parallel to the end surface, so that when the airflow flows out of the second sub-curved surface 243, the angle between the flow direction of the airflow and the end surface is small, and the airflow is not easy to be connected with the installation. The cover 13 and the hot spot area generate greater impact, and more heat from the hot spot area 103 can be taken away.

The first sub-plane 244 is in contact with the second sub-curved surface 243, and the airflow flows out from the second sub-curved surface 243 to the first sub-plane 244, and the first sub-plane 244 is parallel to the end surface 1013 of the air outlet 1011 or faces the end surface of the air outlet 1011 1013 is inclined so that after the airflow passes through the first sub-plane 244 , the first sub-plane 244 can guide the airflow, and more airflow can flow to the hot spot area 103 . In the embodiment shown in FIG. 20 , the first sub-plane 244 is parallel to the end surface 1013 of the air outlet 1011, so that the airflow does not collide with the hot spot area 103 after flowing out from the first sub-plane 244, and the airflow can pass through the hot spot area smoothly. 103, more heat from the hot spot area 103 is taken away. The guiding direction of the airflow can be controlled by controlling the length ratio of the first sub-plane 244 and the second sub-curved surface 243 , so that the airflow can flow to the hot spot area 103 more smoothly, steadily and accurately.

Certainly, in other embodiments, the first sub-plane 244 may also be inclined in a direction away from the hot spot area 103 , or the first sub-plane 244 may also be inclined in a direction close to the hot spot area 103 , which are not listed here. When the first sub-plane 244 is inclined towards the hot spot area 103, the angle between the first sub-plane 244 and the end face 1013 of the air outlet 1011 may be less than 30°, for example, it may be 5°, 7°, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 28°, 30°, etc., on the one hand, it can be avoided that the inclination angle of the first sub-plane 244 towards the direction away from the hot spot area 103 is too large, resulting in less airflow Arriving at the hot spot area 103, and affecting the heat dissipation effect on the hot spot area 103, on the other hand, it can be avoided: the inclination angle of the first sub-plane 244 towards the hot spot area 103 is too large, causing the airflow to have a greater impact on the hot spot area 103 , which affects the heat dissipation effect on the hot spot area 103 and may even increase the temperature of the hot spot area 103 .

Please refer to FIG. 4 , FIG. 5 and FIG. 18 together. In some embodiments, the first flow guide 20 may further include a second flow guide surface 25 opposite to the first flow guide surface 24 . The second flow guide surface The airflow 25 can guide the airflow reaching the second air guide surface 25 into the main air passage 101 and converge with the airflow flowing in the main air passage 101 . It can be understood that the part of the airflow flowing out from the first air channel 102 can reach the second flow guide surface 25, or the external airflow outside the second flow guide surface 25 can reach the second flow guide surface 25, and the second flow guide surface 25 can guide The airflow led to the second guide surface 25 flows toward the main air duct 101 and converges with the airflow in the main air duct 101. On the one hand, the flow of air flowing out of the main air duct 101 can be enhanced, and on the other hand, the main air flow can be enhanced. The temperature of the air flow out of the air duct 101. Wherein, in an example, the second flow guide surface 25 may be symmetrical to the first flow guide surface 24 .

Further, please refer to FIG. 18 , in some embodiments, the second air guide surface 25 may include at least one inclined surface, along the flow direction of the airflow in the main air passage 101 , the inclined surface is inclined toward the main air passage 101 at a predetermined angle. It can be understood that the second guide surface 25 may include one, two, three, four, five or more slopes, the slopes may be inclined toward the main air duct 101 at a predetermined angle, and the predetermined angle may be 30°, 40° , 45°, 55°, 60°, 70°, 75°, 80°, 90°, 100°, 120° or more angles, which are not listed here. Wherein, the predetermined angle refers to the angle between the slope and the flow direction of the airflow in the main air duct 101 . In this way, since the inclined surface is inclined towards the hot spot area 103, the airflow flowing along the second guide surface 25 is more likely to converge with the airflow in the main air duct 101.

Please refer to FIG. 19 , the second guide surface 25 may include multiple sub-slopes 251 , the sub-slopes 251 closest to the air outlet of the first air duct 102 are along the air flow direction in the main air duct 101 and away from the hot spot area 103 Extending, the inclination angle of the sub-incline 251 farthest from the air outlet of the first air channel 102 is greater than the inclination angle of the sub-incline 251 closest to the air outlet of the first air channel 102 . Therefore, after the airflow flows on the second air guide surface 25 , it can better converge with the airflow in the main air duct 101 , and the phenomenon of fluid separation is not easy to occur.

Specifically, the second guide surface 25 can include two, three, four, five or more sub-slopes 251, and the plurality of sub-slopes 251 can be connected end to end to form the second guide surface 25, reaching the second guide surface The airflow on the surface 25 flows sequentially from the sub-slope closest to the air outlet of the first air channel 102 to the sub-incline farthest from the air outlet of the first air channel 102 . It should be noted that the inclination angle refers to the angle at which the sub-incline 251 inclines toward the main air duct 101 , that is, the angle between the sub-incline 251 and the flow direction of the airflow in the main air duct 101 . Define the sub-slope 251 closest to the air outlet of the first air passage 102 as the first sub-slope 2511, the sub-slope farthest from the air outlet of the first air passage 102 is the second sub-slope 2512, and the inclination angle of the first sub-slope 2511 is β1, the inclination angle of the second sub-slope 2512 is β2, and the inclination angle of any sub-slope 251 between the first sub-slope 2511 and the second sub-slope 2512 can be between β1 and β2, or can be greater than β2, or is less than β1, and there is no limitation here. In one embodiment, from the first sub-slope 2511 to the second sub-slope 2512, the inclination angle of the sub-slope 251 gradually decreases. It is smoother and better converged with the airflow in the main air duct 101 .

Certainly, in other embodiments, the inclination angle of the first sub-slope 2511 may also be greater than the inclination angle of the second sub-slope 2512, or the inclination angle of the first sub-slope 2511 may also be equal to the inclination angle of the second sub-slope 2512, There is no limitation here.

Please refer to Fig. 4, Fig. 5, Fig. 18 and Fig. 21 together. In some embodiments, the second guide surface 25 is a curved surface, along the flow direction of the airflow in the main air duct 101, the curved surface is concave, so that the second guide surface 25 is curved. The guide surface 25 can guide more airflows to the main air duct 101 more smoothly and converge with the airflow out of the main air duct 101 , thereby reducing the temperature of the hot spot area 103 faster. Specifically, the opening of the second guide surface 25 can be upward, so that the airflow can flow to the main air duct 101 along the second guide surface 25, and the tangent line of the end point of the outline of the second guide surface 25 can be aligned with the main air duct. The flow direction of the airflow in 101 is parallel or forms an included angle. In one example, along the guiding direction of the second air guide surface 25, the angle between the tangent line of each point of the outline of the second air guide surface 25 and the end surface of the main air duct 101 gradually increases, so that the second The flow direction of the airflow on the guide surface 25 and the flow direction of the airflow in the main air duct 101 gradually decrease, and further, the tangent line of the end point of the contour line of the second guide surface 25 is perpendicular to the end face of the main air duct 101, so that from the first The airflow flowing out of the second flow guiding surface 25 is parallel to the airflow flowing out of the main air duct 101 , so that it is difficult for the fluids to collide with each other.

Further, please continue to refer to Fig. 4, Fig. 5, Fig. 18 and Fig. 21 together, the curved surface (that is, the second guide surface 25) may include a plurality of sub-curved surfaces connected in sequence, at least one sub-curved surface extends exponentially, The sub-curved surfaces extending exponentially can have a better guiding effect, so that the airflow can more smoothly converge with the airflow in the main air duct 101 . Wherein, the number of exponentially extending sub-surfaces may be one, two, three, four or more, which are not listed here. For example, in one embodiment, the plurality of sub-surfaces each extend exponentially. For another example, the sub-curved surface closest to the air outlet of the first air channel 102 extends exponentially, so as to guide the airflow flowing out of the air outlet of the first air channel 102 and reaching the second air guide surface 25 to the main air channel more smoothly. Airway 101. Alternatively, multiple sub-curved surfaces close to the main air duct 101 extend exponentially. It should be noted that the exponential extension of the sub-surface may specifically mean that the contour of the sub-surface extends exponentially such as a quadratic function curve, a cubic function curve, a quartic function curve, or a quintic function curve, such as a parabola. The direction of the exponential extension may extend toward the flow direction of the airflow in the main air duct 101 .

Please continue to refer to FIG. 4, FIG. 5, FIG. 18 and FIG. 21 together. In some embodiments, along the direction from the hot spot area 103 to the main air duct 101, the second guide surface 25 includes first sub-planes connected in sequence 251 , a first sub-curved surface 253 and a second sub-curved surface 254 . The airflow flowing out from the first air channel 102 can flow back to the second flow guide surface 25 through the external windshield structure (such as the protrusion 105 shown in FIG. A sub-curved surface 253 and a second sub-curved surface 254, the first sub-plane 251 can be parallel to the end surface 1013 of the air outlet 1011 or inclined towards the hot spot area 103, so that after the airflow passes through the first sub-plane 251, the first sub-plane 251 can The airflow acts as a guide, and the airflow is relatively stable when flowing on the first sub-plane 251 . In the embodiment shown in FIG. 20 , the first sub-plane 251 is parallel to the end surface 1013 of the air outlet 1011 .

When the first sub-plane 251 is inclined towards the hot spot area 103, the angle between the first sub-plane 251 and the end face 1013 of the air outlet 1011 may be less than 30°, for example, it may be 5°, 7°, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 28°, 30° or more angle values are not listed here one by one, so, on the one hand, it can be avoided: the first sub-plane 251 can also move away from the hot spot If the inclination angle of the area 103 is too large, the flow velocity of the airflow on the first sub-plane 251 is reduced, and less airflow can flow to the first sub-curved surface 253 .

The first sub-curved surface 253 can extend along the flow direction of the airflow in the main air duct 101, and the first sub-curved surface 253 can be used to direct the airflow flowing to the first sub-curved surface 253 to the same direction as the flow direction of the airflow in the main air duct 101. direction, so that the airflow can smoothly converge with the airflow in the main air duct 101 . Specifically, the orientation of the opening of the outline of the first sub-curved surface 253 is the same as the flow direction of the airflow in the main air duct 101 , so that the airflow can flow toward the main air duct 101 when flowing out of the first sub-curved surface 253 . Further, the first sub-curved surface 253 may extend exponentially, so that the airflow flows through the first air guide surface 24 more smoothly, and the directionality after flowing out of the first sub-curved surface 253 is better.

Please refer to Fig. 4, Fig. 5, Fig. 18 and Fig. 21 together. The included angle between the tangent line of each point of the sub-curved surface 253 and the end surface 1013 of the air outlet 1011 increases gradually. In the embodiment shown in FIG. 20 , the shape of the contour line of the first sub-curved surface 253 can be seen, the first sub-curved surface 253 can be in a concave shape, along the guiding direction of the second flow guide surface 25, the first The angle between the tangent of each point of the sub-curved surface 253 and the end surface of the reflector 120 close to the air outlet 1011 gradually increases. For example, in FIG. Afterwards, the angle δ1 between the tangent at point C and the end surface is smaller than the angle δ1 between the tangent at point D and the end surface, and the first sub-curved surface 253 gradually moves toward a direction parallel to the flow direction of the airflow in the main air duct 101 direction, so that when the airflow flows out from the first sub-curved surface 253, the angle between the flow direction of the airflow and the flow direction of the airflow in the main air duct 101 is relatively small, and the air flow is not easy to collide with the air flow in the main air duct 101, so that it can be more Smoothly converge with the airflow in the main air duct 101. The guiding direction of the airflow can be controlled by controlling the length ratio of the first sub-plane 251 and the first sub-curved surface 253 , so that the airflow can flow smoothly and stably toward the airflow direction in the main air duct 101 .

The second sub-curved surface 254 can be located in the main air duct 101 , and the second sub-curved surface 254 can converge the airflow flowing through the first sub-curved surface 253 and the airflow in the main air duct 101 , so that the two airflows can converge into one airflow. The contour of the second sub-curved surface 254 can be a section of convex arc, and the arc can be located in the main air duct 101, and one end of the arc can extend in the opposite direction of the flow direction of the airflow in the main air duct 101, and the other end of the arc can One end can extend toward the main air duct 101, part of the second sub-curved surface 254 can guide the airflow in the main air duct 101, and another part of the second sub-curved surface 254 can guide the airflow flowing out of the first sub-curved surface 253, thereby Two air streams can be brought together into one air stream. Of course, the profile of the second sub-curved surface 254 is not limited to a circular arc, and may also be a curve with a relatively small curvature such as an ellipse or a drop-shaped front edge, which will not be listed here.

Referring to FIG. 18 to FIG. 21 , in some embodiments, the first air guide 20 may further include a third air guide surface 26 and a fourth air guide surface connecting the first air guide surface 24 and the second air guide surface 25 27 , the third guide surface 26 is closer to the hot spot area 103 than the fourth guide surface 27 . The third air guide surface 26 can be used to guide part of the air flow flowing out of the first air guide surface to the second air guide surface 25 . The third guide surface 26 may include one or more combinations of curved surfaces, inclined surfaces, and irregular curved surfaces, and part of the airflow flowing out of the first air duct 102 may directly flow through the third guide surface 26 to the second guide surface. When the flow surface 25 and part of the air flow passing through the hot spot area 103 flow back to the third flow guide surface 26, it can be guided by the third flow guide surface 26 to the second flow guide surface 25, and then guided by the second flow guide surface 25. The air flow led to the main air duct 101 and the main air duct 101 converges.

Further, please refer to FIG. 21 , the third guide surface 26 may include a plurality of sub-surfaces 261, along the flow direction of the airflow in the main air duct 101, the sub-surfaces 261 connected to the first guide surface 24 are concave upward, and the sub-surfaces 261 connected to the second The sub-surface 261 of the guide surface 25 is convex. Thus, the sub-surface 261 connected to the first guide surface 24 can be better guided, and part of the airflow flowing out of the first air duct 102 and part of the airflow flowing through the hot spot area 103 to the next sub-surface 261, connecting the second The sub-surface 261 of the flow guide surface 25 can better guide the airflow reaching the sub-surface 261 to the second flow guide surface 25 .

In the embodiment shown in FIG. 20 , the third guide surface 26 may include two sub-surfaces 261, defining the sub-surface connected with the first guide surface 24 as the first sub-surface 2611, and defining the sub-surface connected with the second guide surface 25. The connected sub-surface is the second sub-surface 2612, the first sub-surface 2611 can be connected with the second sub-surface 2612, the outline of the first sub-surface 2611 can be a concave curve, the outline of the second sub-surface 2612 It can be an upward concave curve, the tangent of the starting point of the outline of the first sub-surface 2611 can be parallel or coincident with the tangent of the end of the outline of the first guide surface 24, and the tangent of the end of the outline of the second sub-surface 2612 It can be parallel or coincident with the tangent line of the starting point of the outline of the second guide surface 25, so that the transition between the first guide surface 24 and the third guide surface 26 is relatively smooth, and the third guide surface 26 and the first guide surface The transition between the flow surfaces 24 is relatively smooth, and the third flow guide surface 26 can better guide part of the air flow out of the first air channel 102 and part of the air flow back to the hot spot area 103 to the second flow guide surface 25 . Wherein, the first sub-surface 2611 and the second sub-surface 2612 may be symmetrical.

Please refer to Fig. 18 to Fig. 21, the fourth guide surface 27 can be parallel to the flow direction of the airflow in the main air duct 101, the fourth guide surface 27 can be located in the main air duct 101, and the main air duct 101 is surrounded by the first The airflow split by the first sub-curved surface 242 of the air guide surface 24 can continue to flow along the fourth air guide surface 27, and then a negative pressure can be formed near the second sub-curved surface 254, and under the effect of the negative pressure, from the second guide surface The air flow from the first sub-curved surface 252 of the flow surface 25 to the second sub-curved surface 254 will flow to the main air duct 101 , and then converge with the air flow in the main air duct 101 .

Please refer to FIG. 5 and FIG. 23 , in some embodiments, the drying device 100 further includes a protrusion located at the end of the hot spot area 103 away from the first air duct 102 and protruding from the end surface of the hot spot area 103 facing away from the heating source 11 . The protrusion 105 is used to make the airflow flowing out of the first air duct 102 and passing through the hot spot area 103 flow back. Specifically, most or all of the airflow flowing out of the first air duct 102 can flow through the hot spot area 103 and continue to flow, and a protrusion 105 protruding from the hot spot area 103 is provided at the end of the hot spot area 103 away from the first air duct 102, When the airflow flowing through the hot spot area 103 flows to the protrusion 105, the protrusion 105 can make the air flow flow back to the hot spot area 103, or the protrusion 105 can guide the air flow to flow in a direction away from the hot spot area 103 and then along the direction close to the first The direction of the air duct 102 flows back to form a vortex, which in turn enables the airflow to circulate to dissipate heat in the hot spot area 103 , improving the heat dissipation effect on the hot spot area 103 . It can be clearly seen in FIG. 22 that the protrusion 105 makes the air flow out of the first air channel 102 form a vortex in front of the hot spot area 103 .

In Fig. 22 and Fig. 23, the darker the color, the greater the air volume. When the first air guide 20 is not used in Fig. A flow guide 20 , more air flows through the hot spot area 103 , and can dissipate heat from the hot spot area 103 .

Further, the contour of the protrusion 105 may be in the shape of a drop, a trapezoid, a triangle, an arc, etc., which are not listed here. The protrusion 105 may include a recirculation surface close to the hot spot area 103, and the airflow flowing from the hot spot area 103 through the recirculation surface may form a recirculation. The return surface can be a slope, and the slope can form an angle with the end surface 1013 of the air outlet 1011, and the angle can be 110 degrees, 120 degrees, 130 degrees, 135 degrees, 140 degrees, 150 degrees or more degrees, so that the airflow can flow through Reflow can be formed after reflow surface. The return surface can also be a curved surface, and the curved surface can be concave, so that the airflow can form a backflow after passing through the return surface. Located above the hot spot area 103 , the circulating flow can enhance the heat dissipation effect on the hot spot area 103 .

Wherein, the protrusion 105 may be formed by the housing 30 protruding from the hot spot area 103 , the protrusion 105 may also be formed by the optical element 60 protruding from the hot spot area 103 , and the protrusion 105 may also be formed by the heating component 30 .

Please refer to FIG. 5 and FIG. 18 , in some embodiments, the surface of the first air channel 102 opposite to the first deflector 20 can be formed with a guide surface 1021, and the guide surface 1021 can be used to communicate with the first guide surface. The air guide surface 24 jointly guides part of the airflow in the main air channel 101 to enter the first air channel 102 . It can be understood that the first air channel 102 can be formed by the first guide surface 24 and the guide surface 1021 together. In the embodiment shown in FIG. 17 , the guide surface 1021 is the end surface at the air outlet 1011 of the main air duct 101 . The profile curve of the guide surface 1021 can be the same shape as the profile curve of the first flow guide surface 24, or the profile curve of the guide surface 1021 can be the same shape as the partial profile curve of the first flow guide surface 24, so that the guide surface 1021 may be guided in the same direction as the first air guiding surface 24 , so that the directionality of the airflow after flowing out from the first air duct 102 is stronger, and the phenomenon of fluid separation is less likely to occur.

Further, in some embodiments, the guide surface 1021 can be an inclined surface, and the inclined surface can extend along the flow direction of the airflow in the main air duct 101 and toward the hotspot area 103 , so that the airflow can flow to the hotspot area 103 after passing through the inclined surface. In one example, when the through hole 131 of the installation cover 13 forms the main air duct 101 , the slope of the slope can be positive, so that the guide surface 1021 can better guide the airflow in the main air duct 101 to the hot spot area 103 . In another example, when the main air duct 101 is formed between the installation cover 13 and the inner surface of the casing, the slope of the slope can be negative, so that the guide surface 1021 can better guide the airflow in the main air duct 101 to Hot spot area 103 .

Further, in other embodiments, the guide surface 1021 can be a curved surface, and along the flow direction of the airflow in the main air duct 101, at least part of the guide surface 1021 is convex, so that the airflow flowing through the guide surface 1021 can flow to the hotspot area 103 . Specifically, the entire guide surface 1021 may be convex, or a part of the guide surface 1021 may be convex, which is not limited here. Along the guiding direction of the guiding surface 1021, the angle between the tangent line of each point on the outline of the guiding surface 1021 and the end surface 1013 of the air outlet 1011 gradually decreases, so that the guiding surface 1021 can better guide the airflow Navigate to the hotspot area 103 .

Referring to FIG. 12 , the structure of the second air guide 50 is similar or identical to that of the first air guide 20 , and will not be described in detail here. In some embodiments, the second air guide 50 and the first air guide 20 can be a split structure, the second air guide 50 can be fixed on the housing 30, and the first air guide 20 can be fixed on the heating assembly. 10 on. In some embodiments, the second flow guide 50 and the first flow guide 20 can be integrally structured, for example, the second flow guide 50 and the first flow guide 20 can be manufactured as a whole through an integral molding process structure, the first flow guide piece 20 and the second flow guide piece 50 can be provided with support ribs to connect, the first flow guide piece 20 can be fixed on the heating assembly 10, the second flow guide piece 20 can not be fixed, or The first flow guide 20 may not be fixed, the second flow guide 20 may be fixed on the casing 30, or the second flow guide 50 may be fixed on the casing 30, and the first flow guide 20 may be fixed on the heating Component 10 on.

In the description of this specification, references to the terms "certain embodiments," "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" are intended to mean A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of said features. In the description of the present application, "plurality" means at least two, such as two, three, unless otherwise specifically defined.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations, the scope of the present application is defined by the claims and their equivalents.

Claims

A drying device, characterized in that the drying device is formed with a main air duct and a first air duct communicating with the main air duct, and the drying device comprises:

a heating element capable of generating heat radiation and creating a hot spot; and

A first air guide, at least part of the first air guide is located in the main air channel, and the first air guide is used to guide part of the air flow in the main air channel to the first air channel, and make the air flow passing through the first air channel flow to the hot spot area.
The drying device according to claim 1, wherein the first air guide is installed at an end of the air outlet of the main air duct, and covers at least part of the air outlet of the main air duct.
The drying device according to claim 1, characterized in that, the first air guide is spaced from the end surface of the air outlet of the main air duct, and the first air guide and the end surface of the air outlet form a Describe the first airway.
The drying device according to claim 1, wherein the side wall of the main air passage is provided with a ventilation hole penetrating the side wall, the ventilation hole forms the first air passage, and the ventilation hole One end communicates with the main air duct, the other end of the ventilation hole faces the hot spot area, and the edge of the ventilation hole along the airflow direction of the main air duct forms the first air guide.
The drying device according to claim 4, characterized in that, the inner surface of the side wall of the main air duct is located on one side of the ventilation hole along the airflow direction, and a protrusion is provided toward the center line of the main air duct. protruding part, the protruding part is used to guide part of the airflow of the main air duct into the ventilation hole, the edge of the ventilation hole along the airflow direction of the main air duct and the protruding part form the first deflector.
The drying device according to claim 1, wherein a ventilation duct is provided on the side wall of the main air duct, the ventilation duct forms the first air duct, and one end of the ventilation duct is connected to the main air duct. The other end of the ventilation duct faces the hot spot area, and the ventilation duct forms the first air guide.
The drying device according to claim 1, wherein the heating assembly includes one or more reflective cups and a heating source, each of the reflective cups is provided with the heating source, and the external space facing the reflective cups constitute the hotspot area.
The drying device according to claim 7, characterized in that, the drying device further comprises a casing, and the casing forms the main air duct.
The drying device according to claim 8, wherein the heating assembly is located in the main air duct.
The drying device according to claim 8, wherein the heating assembly is located between the main air duct and the casing.
The drying device according to claim 10, wherein the heating element surrounds the main air duct.
The drying device according to claim 8, wherein the heating assembly is located at one side of the main air duct.
The drying device according to claim 11, wherein the heating assembly further comprises an installation cover, the installation cover is provided with a plurality of the reflector cups, and the installation cover has an end surface facing the hot spot area.
The drying device according to claim 13, wherein a through hole communicating with the main air duct is opened on the end surface, and the first air guide is installed on an inner side wall of the through hole.
The drying device according to claim 14, characterized in that there is a gap between the end surface and the housing that communicates with the main air duct; Two air ducts and a second air guide installed on the casing, the second air guide is used to guide part of the air flow in the main air duct from between the end surface and the housing to enter the a second air channel, and make the air flow passing through the second air channel flow to the hot spot area.
The drying device according to claim 15, characterized in that, the air flow out of the second air channel and the air flow out of the first air channel converge at the hot spot area.
The drying device according to claim 1, characterized in that,

The first deflector is detachably connected to the air outlet of the main air duct; or

The first deflector is non-detachably connected to the air outlet of the main air duct.
The drying device according to any one of claims 1-17, wherein the first air guide is arranged at the air outlet of the main air duct, and the first air guide includes a A first guide surface opposite to the air channel, the first guide surface is used to guide part of the air flow in the main air channel to the hot spot area.
The drying device according to claim 18, wherein the first guide surface includes at least one inclined surface, and along the flow direction of the airflow in the main air channel, the inclined surface is inclined at a predetermined angle toward the hot spot area.
The drying device according to claim 18, wherein the first guide surface includes a plurality of sub-slopes, and the sub-slope closest to the main air duct is along the flow direction of the airflow in the main air duct And extending in a direction close to the hot spot area, the inclination angle of the sub-incline farthest from the main air duct is larger than the inclination angle of the sub-incline closest to the main air duct.
The drying device according to claim 18, wherein the first guide surface is a curved surface, and the curved surface is convex along the flow direction of the airflow in the main air duct.
The drying device according to claim 21, characterized in that, the curved surface includes a plurality of sub-curved surfaces connected in sequence, and at least one of the sub-curved surfaces extends exponentially.
The drying device according to claim 18, characterized in that, along the direction from the main air duct to the hot spot area, the first guide surface includes a first sub-curved surface, a second sub-curved surface and a second sub-curved surface connected in sequence. A sub-plane, the first sub-curved surface is located in the main air duct, and is used to divert the air flow in the main air duct so that part of the air flow enters the first air duct, and the second sub-curved surface faces the hot spot The area is extended, and is used to guide the airflow flowing into the first air duct to the hot spot area, and the first sub-plane is parallel to the end face of the air outlet of the main air duct or faces the direction of the hot spot area tilt.
The drying device according to claim 23, characterized in that, along the guiding direction of the first guide surface, the distance between the tangent line of each point of the second sub-curved surface and the end surface of the air outlet of the main air duct is The angle between them gradually decreases.
The drying device according to claim 18, characterized in that, the first flow guide further includes a second flow guide surface opposite to the first flow guide surface, and the second flow guide surface is used to guide The airflow reaching the second air guide surface enters the main air duct.
The drying device according to claim 25, characterized in that, the second guide surface includes at least one slope, and along the flow direction of the airflow in the main air passage, the slope is inclined at a predetermined angle toward the main air passage .
The drying device according to claim 25, wherein the second guide surface includes a plurality of sub-slopes, and the sub-slopes closest to the air outlet of the first air duct are along the main air duct. The flow direction of the airflow extends away from the hot spot area, and the inclination angle of the sub-slope farthest from the air outlet of the first air duct is smaller than that of the sub-incline closest to the air outlet of the first air duct the angle of inclination.
The drying device according to claim 25, wherein the second guide surface is a curved surface, and the curved surface is concave along the flow direction of the airflow in the main air duct.
The drying device according to claim 28, wherein the curved surface includes a plurality of sub-curved surfaces connected in sequence, and at least one of the sub-curved surfaces extends exponentially.
The drying device according to claim 25, characterized in that, in the direction from the hot spot area to the main air duct, the second guide surface includes a first sub-plane, a first sub-curved surface and a first sub-curved surface connected in sequence. The second sub-curved surface, the first sub-plane is parallel to the end face of the air outlet of the main air duct or inclined toward the direction of the hot spot area, the first sub-curved surface is concave, and the first sub-curved surface is used In order to guide the airflow flowing through the first sub-plane toward the flow direction of the airflow in the main air duct, the second sub-curved surface is located in the main air duct and is used to converge the flow through the first sub-curved surface The airflow is the same as the airflow inside the main air duct.
The drying device according to claim 30, characterized in that, along the guiding direction of the second guide surface, the sandwich between the tangent of each point of the first sub-curved surface and the outer surface of the hot spot area The angle gradually increases.
The drying device according to claim 25, characterized in that, the first flow guide further includes a third flow guide surface connecting the first flow guide surface and the second flow guide surface, and the third flow guide surface The air guide surface is used to guide part of the airflow flowing out of the first air guide surface to the second air guide surface.
The drying device according to claim 32, wherein the third guide surface includes a plurality of sub-surfaces, and connects the sub-surfaces of the first guide surface along the flow direction of the airflow in the main air duct. The surface is concave, and the sub-surface connected to the second guide surface is convex.
The drying device according to claim 1, characterized in that, the drying device further comprises a protrusion located at an end of the hot spot area away from the first air duct and protruding from the hot spot area, the The protrusion is used for recirculating the airflow flowing out of the first air duct and passing through the hot spot area.
The drying device according to claim 1, characterized in that, a guide surface is formed on the surface of the first air channel opposite to the first air guide, and the guide surface is used to communicate with the first air duct. The deflector jointly guides part of the airflow of the main air passage into the first air passage.
The drying device according to claim 35, wherein the guiding surface is an inclined surface, and the slope of the inclined surface is positive.
The drying device according to claim 35, wherein the guide surface is a curved surface, and at least part of the guide surface is convex along the flow direction of the airflow in the main air duct.
The drying device according to claim 1, characterized in that, the angle between the direction of the airflow flowing to the hot spot area and the flow direction of the airflow in the main air channel is greater than 30 degrees.
The drying device according to claim 1, wherein the heating source comprises a light source, and the drying device further comprises an optical element arranged on the light path of the light source, and the optical element is used to filter or reflect the Visible light emitted by a light source, the hot spot area is at least partially formed on the optical element.
The drying device according to claim 39, wherein the optical element includes a light outlet, through which the heat emitted by the light source enters the outside world, and at least part of the hot spots are formed in the light outlet.