Radiation sources, drying equipment and reflectors

Abstract

A radiation source (11), drying equipment (2) and a reflective seat (5), wherein the radiation source (11) can generate infrared radiation, the infrared radiation emitted by the radiation source (11) has at least two convergence positions (a1, a2), and the line connecting the convergence positions (a1, a2) is parallel to or coincides with the optical axis (L1) of the radiation source (11), so that the radiation power originally converged at one position is dispersed into a larger range of use interval (C), so that the radiation source (11) can achieve a preset drying efficiency within the use interval (C), thereby solving the problem of difficulty in finding the accurate convergence position (a1, a2) during the use of the radiation source (11) and avoiding the danger of rapid temperature rise when the target object is exactly located at the convergence position (a1, a2).

Description

Technical Field

[0001] The present application relates to the technical field of drying equipment, and in particular to a radiation source, a drying equipment and a reflective seat. Background Art

[0002] In the prior art, there are devices that dry objects through infrared radiation and airflow. For example, a hair dryer heats the moisture on the hair through infrared radiation, and the airflow promotes the evaporation of moisture to achieve rapid hair drying.

[0003] In order to avoid the divergence of infrared radiation and ensure the drying efficiency of the target object, the infrared radiation needs to be converged. However, due to the high heat transfer efficiency and good guidance of infrared radiation, the target object can heat up quickly when it is in the convergence position. Once it deviates from the convergence position, the heat transfer efficiency will be greatly reduced. It is difficult for users to accurately find the appropriate distance during use, making it difficult for the drying equipment to achieve the true drying effect according to the designed power in actual use. Summary of the invention

[0004] The present application provides a radiation source, a drying device and a reflective seat, aiming to solve the technical problem in the prior art that it is difficult to achieve a corresponding designed drying effect when using a radiation source to dry an object.

[0005] A radiation source in the present application is capable of generating infrared radiation. The infrared radiation emitted by the radiation source has at least two convergence positions, and the line connecting the convergence positions is parallel to or coincides with the optical axis of the radiation source.

[0006] A drying device in the present application includes: a shell, a motor and a radiation component, wherein an air duct is provided in the shell, the motor is located in the shell and is used to generate an airflow, the airflow flows out of the air duct and propagates along a preset airflow path, and the radiation component is used to generate infrared radiation. The radiation component includes at least one radiation source capable of emitting infrared radiation, and the radiation component is constructed so that the infrared radiation emitted by the radiation source converges to at least two convergence positions on the airflow path.

[0007] A portion of the reflective seat in the present application is provided with a through cavity, or constitutes a portion of the through cavity; another portion of the reflective seat is provided with one or more reflective cups, and the reflective cups have a mounting position; the through cavity allows airflow to pass through and propagate along the airflow path, and the reflective cups are constructed as follows: when a light-emitting component is installed on the mounting position, the reflective cups rectify the infrared radiation emitted by the light-emitting component so that the emitted light converges to multiple convergence positions on the airflow path.

[0008] By using a radiation source, drying equipment and reflective seat in the present application, the radiation power originally concentrated at one position is dispersed to a larger range of use, so that the radiation source can achieve a preset drying efficiency within the use range, which not only solves the problem of difficulty in finding the exact convergence position during the use of the radiation source, but also avoids the danger of rapid heating when the target object is exactly at the convergence position.

[0009] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0011] Figure 1 It is a schematic diagram of the radiation energy convergence of the radiation source in the prior art;

[0012] Figure 2 It is a schematic diagram of the radiation energy convergence of the radiation source in certain embodiments of the present application;

[0013] Figure 3 is a schematic diagram of an optical path system of a radiation source in certain embodiments of the present application;

[0014] Figure 4 is a schematic diagram of an optical path system of a radiation source in certain embodiments of the present application;

[0015] Figure 5 is a schematic diagram of an optical path system of an optical element in certain embodiments of the present application;

[0016] Figure 6 is a schematic diagram of an optical path system of a radiation component in certain embodiments of the present application;

[0017] Figures 7 to 12 is a schematic diagram of an optical path system of a drying device in certain embodiments of the present application;

[0018] Fig.13 is a schematic diagram of the structure of a reflective seat in some embodiments of the present application;

[0019] Fig.14 and Fig.15 It is a schematic diagram of the structure of a reflective seat in some prior arts;

[0020] Fig.16 is a schematic diagram of the structure of a reflective seat in some embodiments of the present application;

[0021] Fig.17 yes Fig.16Schematic diagram of the optical path in the cross-section state in the middle mm direction;

[0022] Fig.18 yes Fig.16 Schematic diagram of the optical path in the cross-section state in the middle nn direction; DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0024] like Figures 1 to 18 As shown, in some embodiments of the present application, a radiation source 11 capable of generating infrared radiation is provided, and the infrared radiation emitted by the radiation source 11 has at least a plurality of convergence positions, namely, convergence position a1, convergence position a2, ... convergence position an, and the connecting line of each convergence position is parallel to or coincides with the optical axis L1 of the radiation source 11. In the following text, for the convenience of description, two convergence positions, namely, convergence position a1 and convergence position a2, are used as examples for explanation. It should be pointed out that in any of the following embodiments, more convergence positions can be formed based on the principles disclosed therein, and it should not be understood that only convergence position a1 and convergence position a2 can be formed, and the technical effect is not limited to only two convergence positions, which will be further described in the relevant content.

[0025] The radiation source 11 is a structure that emits infrared (IR) radiation, and uses infrared (IR) as a heat energy source to remove water and moisture from an object (e.g., hair, fabric). Since different objects have different absorption rates for infrared radiation of different wavelengths, the radiation source 11 can be designed to emit infrared rays with a preset wavelength range and power density to directly heat the moisture of the object, rather than convection or conduction heating. The energy carried by the infrared rays is directly transferred to the part of the object to be dried in the form of thermal radiation to directly heat the moisture, so that the heat transfer efficiency is improved compared with traditional thermal convection or thermal conduction (for example, the energy of thermal radiation is rarely absorbed by the medium around the radiation path, while traditional thermal convection or thermal conduction causes most of the energy to be absorbed by the surrounding medium). Another benefit of using infrared radiation as a heat source is that infrared radiation can penetrate the hair shaft to the cortex of the hair cuticle, thereby drying the hair faster and making the hair loose and soft. Infrared radiation is also believed to be beneficial to scalp health and stimulate hair growth by increasing blood flow to the scalp. The use of infrared radiation can also make the drying device compact and lightweight. The improved heat transfer efficiency and energy efficiency brought by the use of infrared radiation sources can also extend the operating time of the wireless drying device 2 powered by an embedded battery. Infrared radiation is essentially a kind of light, and the guidance and light field of infrared radiation can be determined by optical path settings so that it can be projected to a predetermined location.

[0026] The optical axis is the symmetry axis of the optical system light beam, which is generally the line connecting the focus and the midpoint of the light-emitting surface. It can be understood that in an optical system, a beam of light emitted by the light-emitting element at the focus just passes through the midpoint of the light-emitting surface, and this beam of light is the optical axis of this optical system.

[0027] Please refer to Figure 1 The radiation source 11b in the prior art has only one position b, and the radiation energy density distribution of the infrared radiation in the propagation direction coincides with the optical path, and is roughly two cones as shown. The apex of the cone is the convergence position b. The closer to the convergence position b, the higher the radiation energy density of the infrared radiation. Once it is far away from the convergence position b, the radiation energy density drops rapidly.

[0028] Please refer to Figure 2 The infrared radiation emitted by the radiation source 11 at least forms a convergence position a1 and a convergence position a2, which is equivalent to allocating the emission power of the radiation source 11 to the convergence position a1 and a convergence position a2, and the convergence positions a1 and a2 receive a part of the total emission radiation power.

[0029] Since the radiation source 11 has at least a convergence position a1 and a convergence position a2, its radiation energy density distribution in the propagation direction does not completely coincide with the optical path. Figure 2As shown, in the area between the convergence positions a1 and a2, the light that has completed convergence at the convergence position a1 begins to diverge, while the light that has not yet converged to the convergence position a2 is still in the process of converging. After the two are mixed, the radiation energy density in the area can be maintained within a certain range. In addition, the radiation energy density at the position close to the convergence position a1 and the convergence position a2 is also roughly the same as that in the above-mentioned area, that is, Figure 2 The A region in the transition is a saddle shape, and the A region corresponds to Figure 1 At the cone vertex position (i.e., convergence position b) in the A region, there will be no extreme value of radiation energy density convergence in the A region, nor will there be a rapid increase or decrease in radiation energy density near the extreme value. Due to the above characteristics of the A region, it is possible to maintain a preset radiation energy density within a certain range from the radiation source 11, and this region is hereinafter referred to as the use range A.

[0030] In similar usage scenarios, use Figure 1 In the prior art, when the radiation source 11b dries the target object, there is a position with an extreme value of the radiation energy density. If the target object cannot be accurately placed at the convergence position b, the infrared radiation received by the target object will be greatly reduced. If the power of the radiation source 11 is greatly increased to achieve the drying requirement at the non-convergence position b, the target object will heat up rapidly when it is at the convergence position b, resulting in risks of burns, ignition, etc., and safety and ease of use cannot be taken into account, resulting in poor product strength of the related products.

[0031] When the radiation source 11 in the embodiment of the present application is used to dry the target, the target only needs to be close to the convergence position a1, the convergence position a2, or more preferably located in the use interval A, and the energy density of the infrared radiation received is roughly the same. According to the actual use scenario, the light path convergence position a1 and the convergence position a2 of the radiation source 11 can be adjusted when designing the product, so that the user can naturally place the target in the use interval A when using it, and receive the preset infrared radiation power to achieve the preset drying power. Further, when the user uses the radiation source 11, the radiation source 11 will naturally be directed toward the target. Based on this premise, when the radiation source 11 moves relative to the target to change the distance, the direction of the relative displacement between the two is in the direction of the optical axis L1 of the radiation source 11. Since the line connecting the convergence position a1 and the convergence position a2 is parallel or coincident with the optical axis L1 of the radiation source 11, it can still be kept moving in the use interval A to ensure that the preset drying power is reached. Therefore, it can be seen that the radiation power originally concentrated at one position is dispersed into a larger range of use interval A, so that the radiation source 11 can achieve the preset drying efficiency, which not only solves the problem of difficulty in finding the accurate convergence position during the use of the radiation source 11, but also avoids the danger of rapid temperature rise when the target object is located at a single convergence position. It is easy to understand that, taking the convergence position a1 and the convergence position a2 as examples, in an embodiment with more convergence positions, for example, adding more convergence positions between the convergence position a1 and the convergence position a2, or adding more convergence positions outside the convergence position a1 and the convergence position a2, the above technical effects can also be achieved, and no further description is given.

[0032] In a specific usage scenario, the user uses the radiation source 11 in the above embodiment to dry the hair. According to the usage habits of people, the usage distance of the radiation source 11 is generally about 10 cm from the hair. Then the convergence position a1 can be set to be 5 cm away from the radiation source 11, and the convergence position a2 can be set to be 15 cm away from the radiation source 11, that is, the usage interval A is within the range of 5 cm to 15 cm from the radiation source 11. When using, the user can naturally keep the radiation source 11 at a distance from the scalp in the usage interval A. During use, the radiation power density received from the radiation source 11 is roughly the same. Even if the position of the radiation source 11 is adjusted, the temperature will not drop or rise rapidly, which greatly improves the usability and safety of the product and enables the product to have better product strength.

[0033] It should be pointed out that the optical system can form a specific convergence point under ideal conditions, but in practical applications, the relevant specific structure must have certain errors, and the generated convergence point is not a point in the mathematical sense, but an area with the highest relative concentration. It can also be understood that the smallest light spot that can be formed by infrared radiation on the countless receiving surfaces perpendicular to the optical axis L1 of the radiation source 11 can be understood as the aforementioned convergence point or convergence position a1, convergence position a2.

[0034] In certain embodiments, Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the radiation source 11 includes a light emitting element 13 and an optical element 14. The curvature of the light emitting surface or the light incident surface of the optical element 14 is specially designed so that the curvatures on the meridian plane m and the sagittal plane n are different, so that the light on these two planes converge to different positions.

[0035] For example, Figure 5 In the embodiment shown, the optical element 14 is formed by improving the cylindrical mirror. The unmodified cylindrical mirror is shaped like a cylinder, with a flat light-entering surface and a part of a cylinder. The light emitted from its meridian surface m is converged to a preset meridian convergence point a1, while the light emitted from its sagittal surface n will not be refracted and can be understood as converging at infinity. Figure 5 In the embodiment, the cylindrical mirror is improved in the direction of the sagittal plane n to form the optical element 14, so that the sagittal plane n also has a curvature, and the curvature is different from that on the meridian plane m, so that the emitted light on the sagittal plane n is converged to the preset sagittal convergence point a2 (i.e., the convergence position a2 of the radiation source 11). Since the curvature of the optical element 14 on the sagittal plane n and the meridian plane m is different, the formed meridian plane convergence point a1 (i.e., the convergence position a1 of the radiation source 11) and the sagittal convergence point a2 will not overlap. It is easy to understand that the curvature can also be improved on other planes that are not perpendicular to the meridian plane m, so that the curvature of the plane is different from the curvature on the sagittal plane n and the meridian plane m, so that another convergence position can be formed, and so on, so that the radiation source 11 with the optical element 14 can form more convergence positions.

[0036] In another specific embodiment, Figure 6As shown, the optical element 14 can also be designed as an ellipse, with its long side in the sagittal plane n and its short side in the meridian plane m. The curvatures of the optical element 14 in these two directions are different, so that the refraction angles for the object point light are also different, so that the light on the meridian plane m converges to the meridian convergence point a1, and the light on the sagittal plane n converges to the sagittal convergence point a2. Similarly, the curvature can be improved on other planes that are not perpendicular to the meridian plane m to form another convergence position, and so on, so that the radiation source 11 with the optical element 14 can form more convergence positions.

[0037] In other embodiments not shown, the optical element 14 is composed of multiple materials with different refractive indices for light through combination, stacking, etc., so that when the light passes through the optical element 14, it has different refractive indices on the sagittal plane n and the meridian plane m, and can also achieve the meridian convergence point a1 and the sagittal convergence point a2.

[0038] In an optical system, the reflection system and the refraction system are equivalent to a certain extent. Therefore, in addition to the aforementioned specially designed optical element 14, the radiation source 11 can also be made to have multiple convergence positions by reflection through the reflective cup 12. Figure 2 , Figure 3 and Figure 4 As shown, in certain embodiments, Figures 2 to 4 As shown, the radiation source 11 includes a reflective cup 12 and a light emitting element 13 installed inside the reflective cup 12. The optical system composed of the reflective cup 12 can be referred to Figure 6 The optical system of the optical element 14 is understood, and the difference between the two is that the object point (light emitting element 13) and the image point (convergence position a1, convergence position a2) of the optical element 14 are located on different sides, while the object point and the image point of the reflector 12 are located on the same side. Please refer to the optical path diagram of the reflector 12 in the following description Figure 6 The part located in the image point direction of the optical element 14 is understood.

[0039] like Figure 16-18As shown, the reflective cup 12 can converge the light of the light emitting element 13 to the sagittal convergence point a2 on the sagittal plane n, and can converge the light of the light emitting element 13 to the meridian convergence point a1 on the meridian plane m, and the sagittal convergence point a2 and the meridian convergence point a1 respectively constitute the convergence position a1 and the convergence position a2. The reflective cup in the prior art is generally a rotationally symmetrical structure with the optical axis L1 as the symmetry axis, that is, the direction guided by the reflective cup after the light source located at its focus is emitted in any direction is the same, or it is considered that the convergence points of the light propagating in the sagittal plane n and the meridian plane m are all at the same position, that is, the optical system of the aforementioned radiation source 11b is formed. In this embodiment, the shape of the reflective cup 12 is specially designed, and it is not a rotationally symmetrical structure. The light propagating on the sagittal plane n is reflected and converged to the sagittal convergence point a2, and the light propagating on the meridian plane m is reflected and converged to the meridian convergence point a1, and the two respectively constitute the convergence position a1 and the convergence position a2, so that the radiation source 11 can have multiple convergence positions a1 and a2. It is easy to understand that there are countless surfaces in the optical system that are not perpendicular to the meridian plane m, and some of the surfaces with specific angles can be selected to set more convergence points, so that the radiation source 11 can have more convergence positions.

[0040] In certain embodiments, Figure 2 and Fig.16 As shown, the reflective cup 12 has an inner cavity, and a reflective layer with a high reflectivity is arranged on the inner cavity wall, and the shape formed by the projection of the inner cavity on the normal plane of the optical axis L1 is an ellipse. As mentioned above, in the reflective cup with a rotationally symmetrical structure, the shape formed by the projection of the inner cavity on the normal plane of the optical axis L1 is a circle, and the cross-sectional figure formed on any plane perpendicular to the optical axis L1 has the same curvature at all places, so the light emitted from any direction of the light emitting element located on the optical axis L1 has the same reflection direction for the circular reflective cup 12, and converges into Figure 1 The reflective cup 12 in this embodiment has an elliptical inner cavity, and the cross-sectional figure formed on any plane perpendicular to the optical axis L1 has parts with different curvatures, and the reflection directions of the light are also different. Therefore, the light emitted by the light emitting element 13 is projected to different positions of the elliptical inner cavity, and has different reflection directions, so it converges to different convergence positions a1 and a2.

[0041] In a more specific embodiment, the optical axis L1 passes through the center of the ellipse, and the long side and short side of the ellipse are respectively located on the sagittal plane n and the meridian plane m. Among the light emitted by the light emitting element 13, the light propagating on the sagittal plane n is projected to the two ends of the long side of the ellipse, and the light propagating on the meridian plane m is projected to the two ends of the short side of the ellipse, and the two respectively form different reflection light paths, and can converge at different convergence positions a1 and convergence positions a2, thereby realizing multiple convergence positions.

[0042] The optical systems involved below can all be implemented by referring to the above method, and the implementation principle of the optical system itself will not be described below.

[0043] like Figure 3 As shown, in a specific embodiment, the light emitting member 13 is disposed at the focus of the reflective cup 12 , so that at least the convergence position a1 and the convergence position a2 are both on the optical axis L1 , that is, the connecting line coincides with the optical axis L1 .

[0044] like Figure 4 As shown, in another specific embodiment, the light emitting element 13 deviates from the focus of the reflective cup 12, that is, the light emitting element 13 is not on the optical axis L1 of the light emitting cup 12, so that the convergence position a1 and the convergence position a2 can also be formed, but the convergence position a1 and the convergence position a2 are both deviated from the optical axis L1, and at least the line connecting the convergence position a1 and the convergence position a2 is parallel to the optical axis L1. In a more preferred solution, as Fig.12 As shown, a plurality of radiation sources 11 can be used in combination. Since the plurality of radiation sources 11 each have an optical axis L1, it is difficult to achieve that the plurality of convergence positions a1 and convergence positions a2 formed by the plurality of radiation sources 11 are all on the same optical axis L1. The light emitting element 13 in this embodiment is deviated from the focus so that the convergence positions a1 and convergence positions a2 of each radiation source 11 converge on the same axis, and the axis is parallel to the optical axis L1 of each radiation source 11.

[0045] Both of the above solutions can ensure that the radiation source 11 can receive substantially the same radiation intensity density when in use and the target object moves within the use interval A (ie moves along the direction of the optical axis L1), thereby achieving a preset drying effect.

[0046] like Figures 7 to 12 As shown, some embodiments of the present application also provide a drying device 2, including a shell 21, a motor 3 and a radiation component 1 for generating infrared radiation. An air duct is provided in the shell 21, and the motor 3 is located in the shell 21 and is used to generate an airflow. The airflow flows out of the air duct and propagates along a preset airflow path F. The air duct is a structure inside the shell 21, which provides rectification and guidance for the airflow. It can also be understood that in the entire airflow path F, a part is located in the air duct and the other part is outside the shell. The radiation component 1 includes at least one radiation source 11, and the emitted light of the radiation component 1 converges to at least two convergence positions c1 and c2 on the airflow path F. When the user uses the drying device 2 to dry the target object, the airflow and the converged infrared radiation act on the moisture of the target object at the same time to promote the rapid evaporation of the moisture of the target object and achieve the purpose of drying.

[0047] The radiation component 1 of the drying device 2 can form a plurality of convergence positions c1 and c2, and the plurality of convergence positions c1 and c2 are located on the airflow path F. When using the drying device 2, the user only needs to place the target object close to any convergence position c1 or c2, or between the convergence position c1 and c2, which are all within the preset use interval C. The radiation energy density distribution formed by the radiation component 1 is also saddle-shaped, and the specific principle can be referred to the description of the use interval A above.

[0048] The infrared radiation power density received in the use interval C is roughly the same. At the same time, the use interval C can also ensure that the airflow can be received, so that the user can easily place the target object in the preset radiation power interval and achieve the preset drying effect. Moreover, when the user uses the drying device 2, even if the position of the drying device 2 is adjusted, the target object will be kept on the airflow path F. Based on this premise, when the radiation component 1 moves relative to the target object and changes the distance, since the convergence position c1 and the convergence position c2 are on the airflow path F, that is, actually moving within the above-mentioned use interval C, the radiation power that would have converged at one position is dispersed to a larger interval, so that the drying device 2 can achieve the preset drying efficiency, which not only solves the problem of difficulty in finding the accurate convergence position during the use of the drying device 2, but also avoids the danger of rapid heating when the target object is located at a single convergence position. It is easy to understand that, taking the convergence positions c1 and c2 as examples above, in an implementation with more convergence positions, for example, more convergence positions are added between the convergence positions c1 and c2, or more convergence positions are added outside the convergence positions c1 and c2, the above-mentioned technical effects can also be achieved, and no further details are given.

[0049] In some embodiments, the radiation assembly 1 of the drying device 2 includes only one radiation source 11, and its optical path and related technical effects can refer to the radiation source 11 (capable of achieving Figures 2 to 4 ).

[0050] exist Fig.10 As shown, the radiation source 11 is arranged in the air duct, and the airflow can be made to converge in the use area C after leaving the housing 21 in a manner of surrounding the radiation source 11 through the common air guide structure in the prior art, so as to achieve the aforementioned technical effect, that is, the relative distance between the mobile drying device 2 and the target object in the use area C can also maintain approximately the same drying efficiency. Fig.11 In the embodiment, the radiation source 11 and the air duct are arranged in parallel, that is, after leaving the housing 21, the infrared radiation and the airflow are relatively separated.

[0051] like Figure 7 , Figure 8 , Fig. 9 and Fig.12 As shown, in other embodiments, the radiation component 1 of the drying device 2 includes multiple radiation sources 11. The emitted light from the multiple radiation sources 11 forms multiple convergence positions c1 and convergence positions c2. It should be pointed out that even a single optical system is difficult to converge at one point in practical applications, but rather an area with the highest relative concentration (i.e., the aforementioned minimum light spot). If multiple radiation sources 11 are used, there are multiple optical systems, and it is even more impossible to truly converge at one point. Therefore, the multiple convergence positions c1 and convergence positions c2 that can be formed by the radiation component 1 with multiple radiation sources 11 can be understood as the minimum light spots of each radiation source 11 at the convergence position c1 and the convergence position c2 roughly overlap to form one of the minimum light spots of the radiation component 1; or, at the convergence position c1 and the convergence position c2, each radiation source 11 forms a minimum light spot, and the multiple minimum light spots do not completely overlap, and are arranged according to a preset pattern to form a larger light spot (but still one of the minimum light spots that can be formed by the entire radiation component 1)

[0052] Since the multiple radiation sources 11 each have an optical axis L1, and in order to avoid mutual shielding, the multiple optical axes L1 cannot overlap with each other. Therefore, in the radiation component 1 having multiple radiation sources 11, in order to form multiple convergence positions c1 and convergence positions c2 in the airflow path F, it can be achieved by at least the following two specific implementations:

[0053] (1) The optical axis L1 of each radiation source 11 is oriented toward the corresponding convergence position c1 and convergence position c2, that is, the optical axis L1 of the radiation source 11 is not parallel to the airflow path F, and the emitted light of the radiation source 11 is parallel to its optical axis L1. The radiation source 11 is tilted relative to the airflow path F, so that the light is projected onto the airflow path F. This method is referred to as the tilted method hereinafter. The optical path can refer to Figure 8 .

[0054] (2) The optical axis L1 of each radiation source 11 is parallel to the airflow path F, and the radiation source 11 has a light emitting member 13 and a reflective cup 12 or an optical element 14. The light emitting member 13 is arranged to deviate from the optical axis L1 of the reflective cup 12, or the path of the light emitted by the light emitting member is changed by the optical element 14, so that the light emitted by the radiation source 11 deviates from its optical axis L1. In this way, it can be achieved that under the premise that the optical axis L1 of the radiation source 11 is parallel to the airflow path F, the radiation source 11 can still project light into the preset airflow path F. This method is hereinafter referred to as the defocusing method, and the optical path can refer to Fig.11 .

[0055] It is easy to understand that based on the above two solutions, there is at least a third solution combining the two, that is: the radiation source 11 is set to be inclined toward the airflow path F, and the light emitting element 13 inside it is deviated from the optical axis L1, or the path of the emitted light is changed by using an optical element, so that the light can be projected into the airflow path F. The light path can refer to Figure 7 and Figure 8 The principle is a combination of the above two solutions, which will not be specifically listed and explained below.

[0056] In a specific embodiment, Fig.12 and Fig.13 As shown, multiple radiation sources 11 are arranged in a ring around the air duct (airflow path F), and each convergence position c1 and convergence position c2 of the entire radiation component 1 form a roughly circular or annular light spot, and each area on the convergence position c1 and convergence position c2 is projected and converged by different radiation sources 11 to form a sub-spot (the sub-spot is Figures 1 to 4 The sub-spots are formed by the convergence positions of the radiation sources in the image. The multiple sub-spots may overlap partially or not, and may be located within a certain interval. The convergence positions c1 and c2 are arranged along the airflow path F, and the area between them constitutes the use interval C. In addition, at the convergence positions c1 and c2, the positions of the sub-spots formed by the radiation sources 11 may also be different. For example Figure 7 An inclined solution is adopted, where at the convergence position c1, the first sub-spot of a radiation source 11 is located above the convergence position c1 as shown in the figure, and at the convergence position c2, the second sub-spot of the radiation source 11 is located below the figure.

[0057] In another embodiment, a plurality of radiation sources 11 may also be located on one side of the air duct, and a plurality of convergence positions c1 and c2 are formed on the airflow path F of the radiation component 1 .

[0058] Whether the multiple radiation sources 11 are arranged around the air duct or the multiple radiation sources 11 are located on one side of the air duct, it can be achieved through the aforementioned tilting and defocusing methods.

[0059] In addition, reference Figures 1 to 12 As shown, when there are multiple radiation sources 11, there can be multiple relationships between the convergence position a1, a2 of each radiation source 11 and the convergence position c1, c2 of the entire radiation component 1. In the following text, for the sake of distinction, the convergence position a1, a2 of the radiation source 11 are referred to as sub-convergence position a1, a2, and the convergence position c1, c2 of the radiation component 1 are referred to as mother convergence position c1, c2.

[0060] like Figure 7As shown, in a specific embodiment, infrared radiation emitted by all radiation sources 11 exists at each mother converging position c1 and converging position c2.

[0061] In another embodiment not shown, the number of sub-convergence positions formed by all radiation sources 11 is greater than the number of mother convergence positions formed by the radiation component 11, that is, at least one mother convergence position is formed by focusing light from multiple radiation sources 11, and at least one mother convergence position is formed by focusing light from one radiation source 11, and the infrared radiation from each radiation source 11 is projected onto different mother convergence positions c1 and convergence positions c2.

[0062] like Figure 8 As shown, in another specific embodiment, each radiation source 11 has only one sub-convergence position c1, convergence position (ie, Figure 1 As shown in the optical path diagram, one radiation source 11 focuses light to form a mother convergence position c1, and another radiation source 11 focuses light to form a convergence position c2.

[0063] It is easy to understand that the above schemes are not contradictory and can be combined with each other. For example, some radiation sources 11 have only one sub-convergence position, and some radiation sources 11 have multiple sub-convergence positions, which are combined to form multiple mother convergence positions. Alternatively, the radiation power of each radiation source 11 is different. For example, a radiation component 1 includes three radiation sources 11, one of which has a radiation power of 2C, forming two mother convergence positions, both of which have a radiation power of 1C, and the other two radiation sources 11 have a radiation power of 1C, each of which projects to form a mother convergence position with a radiation power of 1C, so that the radiation component 1 has four mother convergence positions with a power of 1C.

[0064] Therefore, even if the radiation sources 11 have different radiation powers and light path convergence modes, by performing reasonable arrangement and combination through calculation, it is possible to achieve that the radiation component 1 has multiple mother convergence positions with approximately the same power, thereby forming a use interval C.

[0065] like Fig.13 , Figures 16 to 18 As shown, in certain embodiments of the present application, a reflective seat 5 applied to the drying device 2 is also provided, a portion of the reflective seat 5 is provided with a through cavity 51, or constitutes a portion of the through cavity 51, the through cavity 51 allows airflow to pass through, and the airflow passing through the through cavity 51 propagates along the airflow path F.

[0066] Another part of the reflective seat 5 is provided with one or more reflective cups 12, and the reflective cup 12 has a mounting position 121. When the light-emitting component 13 is installed on the mounting position 121, the reflective cup 12 rectifies the infrared radiation emitted by the light-emitting component 13 so that the emitted light converges to multiple convergence positions a1 and a2 on the airflow path F.

[0067] The reflective seat 5 is applied to the drying equipment 2, and the through cavity 51 constitutes a part of the air duct of the drying equipment 2. After the light-emitting components 13 are installed at various positions of the light-emitting seat, the reflective cup 12 and the corresponding light-emitting components 13 constitute the aforementioned radiation source 11 (or radiation component 1). The reflective cup 12 can rectify the infrared radiation emitted by the light-emitting component 13, and form a plurality of convergence positions a1 and convergence positions a2 on the airflow path F. It is easy to understand that when there are multiple reflective cups 12, multiple reflective cups 12 and their corresponding light-emitting components 13 can also be combined into the aforementioned radiation component 1, and the technical effect of the aforementioned radiation component 1 can be achieved through combination, that is, multiple radiation sources 11 are mixed to form a parent convergence position. Since the technical solutions overlap and the technical effects are similar, the optical path system of a single reflective cup 12 is only described below, and the combination of multiple radiation sources 11 is not repeated.

[0068] refer to Figure 2 As shown, the reflective cup 12 and the corresponding light-emitting element 13 form a radiation source 11. When the user uses the drying device 2 with the radiation source 11, he only needs to be close to any convergence position a1, convergence position a2, or between convergence position a1 and convergence position a2, which are all within the preset use range A. The infrared radiation received is roughly the same, and it is ensured that the airflow can be received, so that the user can easily make the target object within the preset radiation power range, and the preset drying effect can be achieved. Moreover, when the user uses the drying device 2, even if the position of the drying device 2 is adjusted, the target object will be kept on the airflow path F. Based on this premise, when the radiation component 1 moves relative to the target object and changes the distance, since the convergence positions a1 and a2 are on the airflow path F, that is, actually move within the above-mentioned use range A, the radiation power that would have been concentrated at one position is dispersed to a larger range, so that the drying device 2 can achieve the preset drying efficiency, which not only solves the problem of difficulty in finding the accurate convergence position during the use of the drying device 2, but also avoids the danger of rapid temperature rise when the target object is just located at a single convergence position. It is easy to understand that, in the above-mentioned example of convergence position a1 and convergence position a2, in an embodiment with more convergence positions, for example, more convergence positions are added between convergence position a1 and convergence position a2, or more convergence positions are added outside convergence position a1 and convergence position a2, the above-mentioned technical effects can also be achieved, and no further description is given. It can still ensure that the preset drying power is reached, and the radiation power concentrated at one position is dispersed into a larger interval, which not only solves the problem of difficulty in finding the accurate convergence position a1 and convergence position a2 during the use of the radiation source 11, but also avoids the danger of rapid heating when the target object is located at a single convergence position a1 and convergence position a2.

[0069] like Figure 16-18As shown, in some embodiments, the reflective cup 12 can converge the light of the light emitting element 13 to the sagittal convergence point a2 on the sagittal plane n, and the reflective cup 12 can converge the light of the light emitting element 13 to the meridian convergence point a1 on the meridian plane m, and the sagittal convergence point a2 and the meridian convergence point a1 respectively constitute the convergence position a1 and the convergence position a2. In some other embodiments, a plurality of mounting positions 121 can be provided in the reflective cup 12, or a plurality of light emitting elements 13 can be mounted on each mounting position 121, so that the optical system formed by the reflective cup 12 has a plurality of light emitting elements 13, and the plurality of light emitting elements 13 are at different positions relative to the reflective cup 12, and each has a different convergence position a1 and a convergence position a2, so that the light rectified by the reflective cup 12 can have a plurality of convergence positions a1 and a convergence position a2.

[0070] In a specific embodiment, the reflective cup 12 has an elliptical inner cavity, and the shape formed by the projection of the elliptical inner cavity on the normal plane of the optical axis L1 is an ellipse. The cross-sectional figure formed by the elliptical inner cavity on any plane perpendicular to the optical axis L1 has parts with different curvatures, and the reflection directions of the light are also different. When the light is projected to different positions of the elliptical inner cavity, there will be different reflection directions, so that it converges to different convergence positions a1 and convergence positions a2. In other embodiments, it can also be realized by other regular graphic combinations or irregular graphics, and multiple parts with different curvatures are formed on the cross-sectional figure formed on any plane perpendicular to the optical axis L1, for example, multiple circles with different diameters are combined in Boolean operations to form a shape with multiple segments of arcs with different diameters connected to each other.

[0071] In a more specific embodiment, the optical axis L1 passes through the center of the ellipse, and the long side and short side of the ellipse are respectively located on the sagittal plane n and the meridian plane m. The light emitting element 13 arranged on the optical axis L1 emits light in all directions, such as Fig.18 As shown, the light propagating on the sagittal plane n is projected to the two ends of the short side of the ellipse and converges at the convergence position a2, as shown in Fig.17 As shown, the light propagating in the meridian plane m is projected to the two ends of the long side of the ellipse and converges at the convergence position a1.

[0072] In some embodiments, there are multiple reflective cups 12, and the multiple reflective cups 12 are arranged in a preset manner, that is, the line connecting the focal points of each reflective cup 12 forms a preset pattern, and the long side of the ellipse corresponding to the inner cavity of each reflective cup 12 is in the tangent direction of the preset pattern, so that the length direction of the reflective cup 12 can adapt to the extension direction of the preset pattern.

[0073] In a preferred embodiment, a plurality of reflective cups 12 are arranged in a ring around the through cavity 51 (or air duct), and the preset figure of the connection line of the focal points of each reflective cup 12 is a circle. At this time, the long side of the ellipse corresponding to the inner cavity of the reflective cup 12 is set in the tangent direction of the circle, which can maximize the use of the annular area and reduce the proportion of the non-reflective part (the black frame area in the two figures below). Although the radial width is lost, the elliptical lamp cup shape with multiple convergence positions a1 and a2 required by the present application is formed.

[0074] In other words, in the annular reflector 5, a plurality of reflective cups 12 are arranged in an annular manner so that infrared radiation can be emitted and converged from the circumferential direction toward the airflow path F. In this solution, an elliptical reflective cup 12 arranged along the tangent direction of the circle is used, while in the prior art, a circular reflective cup is used, and the circular reflective cup can only be designed in the following two solutions:

[0075] Option 1: If Fig.14 As shown, the circular reflector cup 12a is arranged in a circular shape with the short side of the circular oval lamp cup 12 as the diameter. Fig.13 Compared with the present embodiment, the shaded part is the part that does not participate in the optical system. Fig.14 The area of ​​this part is obviously larger, so that the effective volume of the circular reflective cup 12a is smaller, and the volume utilization rate of the entire reflective seat 5a is low.

[0076] Option 2: If Fig.15 As shown, the circular reflector cup 12b is arranged in a circular shape with the long side of the circular elliptical lamp cup 12 as the diameter, and the part outside the circular shape (the shaded part in the figure) is cut off. Although this solution can ensure that the circular reflector cup 12b has a larger use area, the cut-off part causes the circular reflector cup 12b to lose a considerable amount of reflective area and form an irregular cavity, making the constructed optical system chaotic, and more proportions of light cannot be emitted and converged in the preset direction, resulting in low energy utilization.

[0077] Compared with the above two solutions, the elliptical reflective cup 12 in this embodiment can achieve two goals at one stroke, and has at least the following two technical effects:

[0078] (1) It has a larger effective use area, is more adaptable to the annular area, and has a higher area utilization rate.

[0079] (2) Each reflective cup 12 can have two convergence positions a1 and a2, namely, the sagittal convergence point a2 and the meridian convergence point a1 formed by the long side direction and the short side direction respectively, so as to achieve the technical effect of the aforementioned multiple convergence positions a1 and a2 forming a larger use range A.

[0080] In other embodiments, the plurality of reflective cups 12 may be arranged in other ways. Accordingly, the preset shape formed by the connection line of the focal points of the plurality of reflective cups 12 includes one or more combinations of circle, ellipse, arc, polynomial curve, rectangle.

[0081] It is easy to understand that in the above scheme, multiple reflective cups 12 can adopt different degrees of inclination of the optical axis L1 (inclined type) to project to different convergence areas respectively, or further by designing the mounting position 121, the position of the light-emitting component 13 is deviated from the focus of the optical system of the reflective cup 12 (off-focus type), so as to form a desired optical path system.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0083] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0084] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A drying device, characterized in that: include: A shell, wherein an air duct is provided in the shell; a motor, located in the housing and used to generate an airflow, the airflow flowing out of the air duct and propagating along a preset airflow path; A radiation assembly, including a light-emitting element and a reflective cup for generating infrared radiation; The radiation component includes multiple radiation sources that can emit infrared radiation. The radiation component is constructed as follows: the infrared radiation emitted by all the radiation sources converges to two convergence positions on the airflow path, the reflective cup can converge the light of the light emitting element to the sagittal convergence point on the sagittal plane, and the reflective cup can converge the light of the light emitting element to the meridian convergence point on the meridian plane, and the sagittal convergence point and the meridian convergence point each constitute the convergence position.

2. The drying device according to claim 1, characterized in that: The optical axis of at least one of the radiation sources faces the corresponding converging position.

3. The drying device according to claim 1, characterized in that: The optical axis of each of the radiation sources is parallel to the airflow path.

4. The drying device according to claim 1, characterized in that: Each of the converging positions is formed by one of the radiation sources; or, Each of the converging locations is formed by a portion of the plurality of radiation sources.

5. The drying device according to claim 1, characterized in that: The plurality of radiation sources surround the air duct, or the plurality of radiation sources are located on one side of the air duct.

6. The drying device according to claim 1, characterized in that: The wind duct surrounds the radiation source.

7. Reflective seat, characterized in that: A portion of the reflective seat is provided with a through cavity, or constitutes a portion of the through cavity; Another part of the reflective seat is provided with a plurality of reflective cups, and the reflective cups have mounting positions; The through cavity allows airflow to pass through and propagate along the airflow path. The reflective cup is constructed as follows: when a light-emitting component is installed on the mounting position, the reflective cup rectifies the infrared radiation emitted by the light-emitting component so that the emitted light of all the light-emitting components converges to two convergence positions on the airflow path. The reflective cup can converge the light of the light-emitting component to a sagittal convergence point on the sagittal plane, and can converge the light of the light-emitting component to a meridian convergence point on the meridian plane. The sagittal convergence point and the meridian convergence point each constitute the convergence position.

8. The reflective seat according to claim 7, characterized in that: The reflective cup has an elliptical inner cavity, and the shape formed by the projection of the elliptical inner cavity on the normal plane of the optical axis is an ellipse.

9. The reflective seat according to claim 8, characterized in that: The optical axis passes through the center of the ellipse, and the long side and the short side of the ellipse are respectively located on the sagittal plane and the meridian plane.

10. The reflective seat according to claim 9, characterized in that: The connection line of the foci of each reflective cup forms a preset pattern, and the long side of the ellipse is in the tangent direction of the preset pattern.

11. The reflective seat according to claim 10, characterized in that: The preset graphics include one or more combinations of a circle, an ellipse, an arc, a polynomial curve, and a rectangle.

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