CN117156996A

CN117156996A - Drying equipment

Info

Publication number: CN117156996A
Application number: CN202380011063.4A
Authority: CN
Inventors: 黄通尧; 同钊
Original assignee: Shenzhen Ruyuan Technology Co ltd
Current assignee: Shenzhen Ruyuan Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-12-01
Also published as: WO2024174129A1

Abstract

A drying device (10) comprises a shell (11), wherein a first air duct (a), a second air duct (b), a wind power component (12) and a radiation component (13) are arranged in the shell (11); wherein the air flow of the first air channel (a) flows out of the shell (11) from the air flow channel (111), and at least part of the air flow in the first air channel (a) comes from the outside of the second air channel (b); the wind power assembly (12) comprises a motor (121) for generating an air flow in the first air duct (a) and/or the second air duct (b); the radiation assembly (13) comprises a first portion (131) and a second portion (132); the first portion (131) forms at least part of the airflow channel (111), or the airflow channel (111) is mounted to the first portion (131); the second portion (132) is in heat exchange relationship with the air flow in the second air duct (b).

Description

Drying equipment

Technical Field

The application relates to the technical field of drying, in particular to drying equipment.

Background

The main components of the traditional hair dryer are a motor, an electric heating wire (such as a resistance wire) and an air duct. When the motor operates, air flow is generated in the air duct, the electric heating wire is electrified to heat the air flow in the air duct, and the air blower blows hot air flow to hair of a user. However, the overheated air stream is blown to the hair surface to bake the hair, and damage to the hair quality is caused by long-term use.

New generation hair dryers add a source of radiation capable of producing infrared radiation to directly heat the moisture on the hair with the infrared radiation. Because the radiation source needs to dissipate heat during operation, in the prior art, the radiation source is generally wholly or partially arranged in an air duct of the blower, and the radiation source is cooled by air flow of the blower.

However, when the air flow in the blower flows through the surface of the radiation source, wind resistance and wind noise are generated, so that not only is the running noise increased, but also the smoothness of the output air flow is affected, and the user can blow the hair in a mess easily when using the air flow.

Disclosure of Invention

The application provides drying equipment, and aims to solve the problems of poor air flow smoothness and high wind noise of a blower with a radiation source in the prior art.

The drying equipment provided by the application comprises a shell, wherein a first air channel, a second air channel, a wind power component and a radiation component are arranged in the shell; and the air flow of the first air channel flows out of the shell from the air flow channel, and at least part of the air flow in the first air channel comes from the outside of the second air channel. The wind power assembly comprises a motor for generating air flow in the first air duct and/or the second air duct; the radiation assembly comprises a first part and a second part, wherein the first part forms at least part of the airflow channel, or the airflow channel is mounted on the first part; the second portion exchanges heat with the air flow in the second air duct.

The drying device provided by the application is provided with a first air channel and a second air channel, wherein the air flow of the first air channel flows out of the shell from the air flow channel and dries the target object. The air flow in the second air channel is radiated through the second part of the radiation assembly, and the influence of wind noise and wind resistance generated in the radiating process of the second part on the air flow in the first air channel is small. Therefore, the drying equipment provided by the application can meet the heat dissipation requirement of the radiation component, can output air flow with better smoothness, and simultaneously reduces operation noise.

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

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIGS. 1a, 1b, 1c, 1d, 1e are schematic structural views of a drying apparatus according to certain embodiments of the present application;

FIGS. 2a, 2b are schematic diagrams of the airflow and air passages of a drying apparatus in accordance with certain embodiments of the present application;

FIG. 2c is a schematic view of the direction of the air flow at section m-m in FIG. 2 a;

FIGS. 3a and 3b are schematic diagrams of the airflow and air passages of a drying apparatus according to certain embodiments of the present application;

FIG. 3c is a schematic view of the direction of the air flow at section n-n in FIG. 3 a;

FIG. 4 is an exploded schematic view of a drying apparatus in accordance with certain embodiments of the present application;

FIG. 5 is a schematic diagram of the structure of a drying apparatus in accordance with certain embodiments of the present application;

FIG. 6 is a schematic diagram of the structure of a drying apparatus in accordance with certain embodiments of the present application;

fig. 7 is a schematic view of the structure of a drying apparatus in some embodiments of the present application.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the embodiments of the present application and are not to be construed as limiting the embodiments of the present application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, the meaning of "a plurality" is two or more, and the number of certain structures is not specifically described, but it is to be understood that the number of these structures may be one or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different structures of the application. To simplify the present disclosure, components and arrangements of specific examples are described herein. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

As shown in fig. 1a, in some embodiments of the present application, a drying apparatus 10 is provided, comprising a housing 11, a first air duct a, a second air duct b, a wind power assembly 12, and a radiation assembly 13 disposed within the housing 11. The flow direction of the air flow in the first air channel a and the second air channel b is shown by dotted arrows in the drawings, and the other drawings are the same and will not be repeated.

The wind power assembly 12 comprises a motor 121, which motor 121 in operation drives a propeller to rotate, generating an air flow in the first air channel a and/or the second air channel b. The air flow in the first air channel a flows out of the shell 11 through the air flow channel 111, and is blown to the target object for drying.

The radiation assembly 13, when in operation, generates Infrared Radiation (IR) having a predetermined wavelength range and power density, which is transmitted to a target object (e.g., hair, fabric) and then directly heats the moisture of the target object. The radiation heat transfer mode has little heat absorbed by the surrounding air, and compared with the traditional heat transfer mode, the radiation heat transfer mode has greatly improved energy utilization rate. When the radiation assembly 13 and the wind assembly 12 are operated simultaneously, the air flow and the infrared radiation are combined to accelerate the evaporation of the moisture of the target object.

The principle of operation of the radiation assembly 13 is based on blackbody radiation, radiating in the infrared to visible wavelength range in the form of heat transfer. Blackbody radiation is broadband radiation with a center wavelength and spectral bandwidth decreasing with increasing temperature. Total energy of blackbody radiation and sxt ⁴ Proportioned, where S represents surface area and T represents temperature.

The radiation assembly 13 needs to operate in a suitable temperature range. If the radiation assembly 13 is operated at too high a temperature, the center wavelength is lowered, and the emitted infrared radiation deviates from the preset wavelength, which affects the drying efficiency. Further, the radiation module 13 in a high temperature state heats the adjacent components and the temperature of the housing 11, which easily results in an excessively high temperature of the entire drying apparatus 10. If the temperature of the radiation module 13 is too low, more electric energy is required to be converted into heat energy to maintain the operation temperature, so that the infrared radiation with the preset wavelength can be generated, and the electric energy is wasted. Therefore, when designing the related structure of the drying apparatus 10, it is necessary to comprehensively consider the heat dissipation area, heat dissipation requirement, heat dissipation airflow flow, heat dissipation airflow velocity and other factors of the radiation assembly 13, so as to ensure that the radiation assembly 13 is always maintained within a suitable temperature range during operation. For simplicity of description, the radiation assembly 13 will hereinafter be referred to as having a temperature too low for the radiation assembly 13 when the operating temperature of the radiation assembly 13 is below its lower limit of the suitable temperature range and as having a temperature too high for the radiation assembly 13 when the operating temperature of the radiation assembly 13 is above its upper limit of the suitable temperature range.

As shown in fig. 1a, in the embodiment provided by the present application, the radiation assembly 13 includes a first portion 131 and a second portion 132, where the first portion 131 corresponds to the airflow in the first air duct a, and the second portion 132 corresponds to the airflow in the second air duct b.

More specifically, the second portion 132 is in heat exchange relationship with the air flow in the second air path b. In some embodiments, the air flow in the second duct b directly flows over the surface of the second portion 132 in heat exchange relationship therewith. In other embodiments, the air flow in the second duct b flows through an associated heat sink structure thermally coupled to the second portion 132, indirectly exchanging heat with the second portion 132. And in the continuous flow process of the air flow in the second air duct b, heat on the surface of the second part 132 is taken away, so that the heat dissipation and the temperature reduction of the second part 132 are realized.

The air flow in the first air duct a flows through the air flow channel 111 and then leaves the housing. In the embodiment shown in fig. 1a, the first portion 131 of the radiation assembly 13 forms at least part of the air flow channel 111. In other words, the air flow in the first air duct a flows through the first portion 131 and exits the housing 11. It is easy to think that the air flow in the first air duct a must exchange heat with the first portion 131 when directly flowing through the first portion 131, that is, the air flow in the first air duct a dissipates heat from the first portion 131. The air flow channel 111 may be formed entirely by the first portion 131, or may be formed by the first portion 131 and other structures together.

In other embodiments, as shown in fig. 1b, the air flow channel 111 is a separate structure that is mounted to the first portion 131 of the radiation assembly 13. In other words, the air flow in the first air duct a does not directly flow through the first portion 131, but flows through the air flow passage 111 installed at the first portion 131 to leave the housing 11. If the heat conductivity of the airflow channel 111 is better (e.g. made of iron, aluminum, copper, etc.), the airflow channel 111 corresponds to a heat dissipation structure thermally coupled to the first portion 131, and the airflow in the first air channel a indirectly dissipates heat from the first portion 131 during the airflow flowing through the airflow channel 111. If the heat conductivity of the airflow channel 111 itself is poor (e.g. made of mica, ceramic, asbestos, etc.), the airflow channel 111 is not thermally coupled to the first portion 131, and accordingly, the middle airflow in the first air duct a does not dissipate heat from the first portion 131 when flowing through the airflow channel 111. In more specific embodiments, the airflow channel 111 may be designed to have a smooth inner wall with less wind resistance to the airflow according to the different heat dissipation requirements; alternatively, the airflow channel 111 is shaped to have a plurality of fins or convex structures, and the relatively smooth inner wall increases the contact area with the airflow, increasing the heat dissipation efficiency. In some embodiments, the airflow channel 111 covers the entire first portion 131, so that the heat dissipation effect of the entire first portion 131 is affected by the heat conduction property. In other embodiments, the airflow channel 111 covers a portion of the first portion 131, and another portion of the first portion 131 can contact the airflow in the first air duct a, so that the heat conducting property of the airflow channel 111 affects only a portion of the first portion 131. In summary, the heat conductivity, shape, coverage area, etc. of the airflow channel 111 can be changed to change the heat dissipation efficiency of the first air channel a to the first portion 131.

At least part of the air flow in the first air channel a comes from outside the second air channel b, namely, part of the air flow in the first air channel a does not flow through the second air channel b. In the embodiment shown in fig. 1a, there are at least two portions of the air flow in the first duct a, one from the second duct b and the other from outside the second duct b. In the embodiment shown in fig. 1c, the air flows in the first air duct a are all from outside the second air duct b, i.e. the first air duct a and the second air duct b are independent from each other.

The above embodiments of the present application can realize the following heat dissipation modes after being combined:

(a) As shown in fig. 1a, the first portion 131 forms an airflow channel 111. Part of the air flow in the first air channel a comes from the second air channel b, and the other part comes from the outside of the second air channel b. The radiation process of the radiation component 13 is as follows: after the second portion 132 is cooled by the air flow in the second air duct b, the air flow is mixed with the air flow from outside the second air duct b and then is converged into the first air duct a. The air flow in the first air channel a dissipates heat from the first portion 131 when flowing through the air flow channel 111.

(b) As shown in fig. 1b, the first portion 131 is provided with the air flow channel 111, and the air flow channel 111 has a better thermal conductivity. Part of the air flow in the first air channel a comes from the second air channel b, and the other part comes from the outside of the second air channel b. The radiation process of the radiation component 13 is as follows: after the second portion 132 is cooled by the air flow in the second air duct b, the air flow is mixed with the air flow from outside the second air duct b and then is converged into the first air duct a. Since the airflow channel 111 and the first portion 131 form thermal coupling, the airflow in the first air duct a flows through the airflow channel 111 and indirectly dissipates heat from the first portion 131.

(c) As shown in fig. 1b, the first portion 131 is mounted with the air flow channel 111, and the air flow channel 111 has poor thermal conductivity. Part of the air flow in the first air channel a comes from the second air channel b, and the other part comes from the outside of the second air channel b. The air flow in the first air path a does not radiate heat from the first portion 131 because of the poor thermal conductivity of the air flow path 111. The radiation process of the radiation component 13 is as follows: the air flow in the second air duct b dissipates heat from the second portion 132.

(d) As shown in fig. 1c, the first portion 131 forms an airflow channel 111. The air flow in the first air duct a is all from outside the second air duct b. The radiation process of the radiation component 13 is as follows: the air flow in the second air duct b dissipates heat from the second portion 132, and the air flow in the first air duct a dissipates heat from the first portion 131.

(e) As shown in fig. 1d, the first portion 131 is provided with the air flow channel 111, and the air flow channel 111 has a better thermal conductivity. The air flow in the first air duct a is all from outside the second air duct b. The radiation process of the radiation component 13 is as follows: the air flow in the second air duct b dissipates heat from the second portion 132, and the air flow in the first air duct a passes through the air flow channel 111 and dissipates heat from the first portion 131 indirectly.

(f) As shown in fig. 1d, the first portion 131 is mounted with the air flow channel 111, and the air flow channel 111 has poor thermal conductivity. The air flow in the first air duct a is all from outside the second air duct b. The radiation process of the radiation component 13 is as follows: the air flow in the second air duct b dissipates heat from the second portion 132.

The heat dissipation intensity of the radiation module 13 is different from the above-mentioned heat dissipation modes.

In the heat radiation mode (d), the airflows in the first air duct a and the second air duct b are independent from each other, and each radiates heat to the first portion 131 and the second portion 132, respectively, so that the heat radiation intensity to the radiation module 13 is maximized. The heat dissipation mode (e) is substantially similar to the heat dissipation mode (d), and the difference is that the first air duct a in the heat dissipation mode (e) indirectly dissipates heat to the first portion 131 through the air flow channel 111 with better heat conductivity, and the heat dissipation strength of the heat dissipation mode (e) may be substantially the same as or stronger or weaker than that of the heat dissipation mode (d) according to the actual shape, material and size of the air flow channel 111.

In the heat dissipation mode (a), a part of the air flow in the first air channel a comes from the second air channel b, and the air flow in the second air channel b exchanges heat with the second part 132 to absorb heat and raise temperature, and the air flow in the first air channel a is converged into the first air channel a to make the air flow in the first air channel a higher than the ambient air temperature, so that the heat dissipation efficiency is reduced when the air flow in the first air channel a flows through the first part 131, and the heat dissipation strength of the radiation component 13 is lower than that of the heat dissipation mode (d). The heat dissipation mode (b) is substantially similar to the heat dissipation mode (a), and differs in that the heat dissipation mode (b) dissipates heat indirectly through the first portion 131 via the air flow channel 111 having better heat conductivity. Therefore, the heat dissipation intensity of the heat dissipation modes (a) and (b) is lower than that of the heat dissipation modes (d) and (e).

In the heat dissipation mode (c) and the heat dissipation mode (f), the heat dissipation of the first portion 131 is not performed by the air flow due to the poor thermal conductivity of the air flow channel 111, but the heat dissipation of the second portion 132 is performed by the air flow in the second air duct b, which has substantially the same heat dissipation intensity, and is lower than the heat dissipation modes (a) and (b).

As can be seen from the foregoing, too high heat dissipation strength may result in too low a temperature of the radiation assembly 13, thereby resulting in increased power consumption; too low a heat radiation intensity easily causes the temperature of the radiation member 13 to be too high, thereby causing problems of wavelength variation, overheating of the drying apparatus 10 as a whole, and the like. Therefore, the above-mentioned heat dissipation methods have different heat dissipation intensities, but have no absolute difference between them. In practical applications, a suitable heat dissipation manner may be selected according to the power, the size and the wavelength of the radiation assembly 13, and the data such as the rotation speed of the motor 121, the air flow and the wind resistance of the first air duct a and the second air duct b of the wind power assembly 12, so as to ensure that the radiation assembly 13 continuously operates in a suitable temperature range.

For example, the drying apparatus 10 is designed such that the infrared radiation needs to cover a wide range, and thus the size of the radiation assembly 13 is large, and if the radiation assembly 13 is entirely located in the air flow and is easily excessively radiated to cause an excessively low temperature, the radiation assembly 13 may be radiated by the radiation means (c) or the radiation means (f), that is, only the second portion 132 of the radiation assembly 13 is radiated, and the first portion 131 is not radiated. For example, if the drying apparatus 10 is designed to output an air flow with a high air speed, and the air flow speed in the first air duct a and/or the second air duct b is high, which easily causes the temperature of the radiation assembly 13 to be too low, the heat dissipation mode (a) or the heat dissipation mode (b) may be adopted, so that the heat dissipation efficiency of the first portion 131 is reduced. For example, the radiation module 13 in the drying apparatus 10 has a small size, a small heat dissipation area, and is easy to be excessively high, and the radiation module 13 can be sufficiently dissipated by the heat dissipation method (d) or the heat dissipation method (e).

In the above embodiments, the drying apparatus 10 directly outputs the air flow in the first air channel a to the target object, and the wind resistance and wind noise generated by the second portion 132 on the air flow in the second air channel b do not directly affect the air flow in the first air channel a, so that the drying apparatus 10 can output the high-speed and smooth air flow on the premise of meeting the heat dissipation requirement on the radiation component 12. And, the heat dissipation mode of the radiation assembly 13 can be flexibly adjusted to achieve various design purposes of the drying apparatus 10.

As shown in fig. 1a, the drying apparatus 10 in some embodiments has a wind assembly 12 at least partially disposed in the first air duct a, and a motor 121 is operated to generate an air flow directly in the first air duct a, so that the air flow rate in the first air duct a is high. The second air channel b is influenced by the air flow of the first air channel a to form air flow, and the flow speed of the air flow is low.

The first portion 131 of the radiation module 13 corresponds to the air flow in the first air channel a, and the first portion 131 or the air flow channel 111 needs to be designed to minimize wind noise and wind resistance, so that the air flow in the first air channel a blows to the target object in a high-speed and smooth state. The second portion 132 corresponds to the airflow in the second air duct b, and since the airflow velocity in the second air duct b is slower, the airflow velocity and the wind resistance of the second portion 132 are less affected, and the airflow in the first air duct a is not directly affected even if turbulence and wind noise occur in the second air duct b, the second portion 132 does not need to consider the influence on the wind velocity and the wind noise of the airflow in the second air duct b.

For the radiation assembly 13, its overall shape first needs to meet its own functional requirements. On this premise, only the first portion 131 is required to be designed into a shape with low wind resistance or the airflow channel 111 with low wind resistance is installed, and the second portion 132 is not limited by wind resistance, so that the wind resistance limitation of the overall shape of the radiation assembly 13 is reduced. Inside the drying apparatus 10, the air flow in the second air duct b is guided by the relevant structure to any part of the radiation assembly 13 for heat dissipation, which part constitutes the second part 132 of the radiation assembly 13.

In other embodiments, not shown, the wind power assembly 12 of the drying apparatus 10 is arranged in the second wind tunnel b, directly creating an air flow in the second wind tunnel b. Accordingly, the first air duct a is influenced by the second air duct b to form an air flow.

In some embodiments, shown in fig. 1a, a region within housing 11 forms an intake space c (the region enclosed by the dashed line frame is shown for indicating purposes only and not limiting the boundaries of this region), and wind assembly 12 is located at least partially downstream of intake space c (i.e., at least a portion of intake space c is located upstream of wind assembly 12). The downstream of the second air duct b is indirectly or directly communicated with the air inlet space c, wherein the direct communication means that the air flow enters the air inlet space c after leaving the second air duct b; indirect communication means that the second air duct b is connected to the air intake space c by other structures, such as pipes, cavities, channels, etc., through which the air flow passes after leaving the second air duct b and then enters the air intake space c. Reference will be made hereinafter to direct or indirect communication between other structures, which means that the gas flow is free to flow in a direct or indirect manner between two structures in communication with each other, and the explanation will not be repeated.

The motor 121 in the wind power assembly 12 creates an air flow that works on the air, creating a negative pressure upstream of the wind power assembly 12, i.e. a negative pressure environment in the intake space c. The downstream of the second air duct b is communicated with the air inlet space c, and the air in the second air duct b is influenced by negative pressure to form air flow flowing to the air inlet space c.

As shown in fig. 1a, in some embodiments, after the air flow in the second air duct b enters the air intake space c, the air flow in the first air duct a is totally merged into the first air duct a, and the air flow in the first air duct a exits the housing 11 through the air flow channel 111. In other words, all the air flow formed inside the drying apparatus 10 flows out through the air flow channel 111, and the end of the air flow channel 111 facing the outside of the housing 11 can also be understood as the air outlet of the drying apparatus 10.

In other embodiments, as shown in fig. 1e, a first wind assembly 12a is provided in a first wind tunnel a and a second wind assembly 12b is provided in a second wind tunnel b of the drying apparatus 10. The housing 11 is provided with a plurality of air outlets 111b communicating with the air intake space c in addition to the air flow passage 111. The first wind power assembly 12a and the second wind power assembly 12b generate air flows in the respective air channels when in operation, and according to the operation conditions of the first wind power assembly and the second wind power assembly, the air flows in the drying equipment 10 exist in the following various conditions: (1) When the second wind power assembly 12b is operated and the first wind power assembly 12a is not operated, after the air flow generated in the second air duct b enters the air inlet space c, a part of the air flow is converged into the first air duct a to form air flow, and the other part of the air flow leaves the shell 11 from the air outlet 111b. (2) When the second wind power assembly 12b and the first wind power assembly 12a are simultaneously operated, air flows are respectively generated in the first air duct a and the second air duct b. In addition, according to the negative pressure of the first wind power assembly 12a in the air inlet space c, the air flow in the second air duct b may be affected by the negative pressure and completely enter the first air duct a after entering the air inlet space c, or some air flow may leave the housing 11 from the air outlet 111b without entering the first air duct a. (3) When the first wind power component 12a is operated and the second wind power component 12b is not operated, the second air duct b is pressurized by the air inlet space c to generate air flow, and the air flow of the second air duct b is all converged into the first air duct a.

As shown in fig. 1a and 2a, hereinafter, for convenience of description, a portion of the second air path b that exchanges heat with the second portion 132 will be referred to as a second air path midstream b ₂ The second air duct b is positioned at the middle stream b of the second air duct ₂ The upstream part is called the upstream b of the second air duct ₁ 。

Since the intake space c is located downstream of the second air passage b and upstream of the first air passage a. The portion of the second air duct b connected to the air intake space c is substantially parallel to the first air duct a, and the flow direction of the air flow is opposite to that of the first air duct a, and this portion is referred to as a second air duct downstream b ₃ . That is, the air flow in the second air duct b sequentially flows through the upstream b of the second air duct ₁ Midstream b of second air duct ₂ Downstream b of second air duct ₃ . The upstream b of the second air duct ₁ Midstream b of second air duct ₂ Downstream b of second air duct ₃ There is no clear limitation, and only the flow direction of each part of the air flow in the second air duct b is described conveniently.

In a more specific embodiment, as shown in fig. 1a, in the second tunnel b, the second portion 132 is located upstream of the inlet space c, i.e. the air flow in the second tunnel b is first heat exchanged with the second portion 132 of the radiation assembly 3 and then enters the second tunnel downstream b ₃ And flows toward the intake space c in a direction substantially parallel and opposite to the first air passage a.

As shown in fig. 1a, in some embodiments, the downstream end of the wind assembly 12 is sealingly mounted to one end of the airflow channel 111, the other end of the airflow channel 111 being connected to the outside of the housing 11 and constituting the air outlet of the drying apparatus 10. The upstream end of the wind assembly 12 communicates directly or indirectly with the air intake space c. In operation, the motor 121 of the wind power assembly 12 draws in air from the air intake space c at its upstream end and outputs air to the air flow passage 111 at its downstream end. In other words, the wind assembly 12 and the airflow channel 111 together form at least part of the first wind tunnel a.

In a more specific embodiment, as shown in fig. 1a and 4, the radiation assembly 13 includes a plurality of radiation sources 133 arranged in or along a portion of the ring, and the airflow channel 111 is surrounded by one or more radiation sources 133. More specifically, the airflow channel 111 may be located on an annular axis of the array of radiation sources 133, or may be offset from the annular axis as desired.

When the drying device 10 is used for drying a target object, air flow generated by the air force assembly 12 flows through the surface of the target object, and infrared radiation generated by the radiation assembly 13 forms a light spot on the target object. In order to achieve a better drying effect, the areas of action of the air flow and the infrared radiation should coincide as much as possible. Since the directivity of the infrared radiation is better and the air flow is easy to diffuse, the air flow channel 111 of the drying device 10 is arranged at the center of the surrounding area of the radiation component 13, and the wind field formed by the diffusion of the air flow at the preset distance after the air flow flows out of the drying device 10 is approximately coincident with the light field formed by the infrared radiation at the position. When the distance between the target object and the drying device 10 is approximately the preset distance, the position of the infrared radiation forming the light spot on the target object is just blown by the air flow, so that a better drying effect is achieved. It is to be understood that when the plurality of radiation sources 133 are arranged along a part of the ring shape, the light emitting direction thereof may be guided with a certain inclination, so as to achieve the above-described technical effects.

In other embodiments, not shown, the number of the radiation sources 133 in the radiation assembly 13 may be one, and the radiation sources may be arranged side by side with the airflow channel 111, and in this structure, the light emitting direction may be guided in a certain deflection, so as to achieve the above technical effect.

In certain more specific embodiments, at least portions of the airflow channels 111 are each formed by at least portions of each of the radiation sources 133. The air flow in the first air duct a contacts and exchanges heat with at least part of each of the radiation sources 133 while passing through the air flow channel 111, thereby uniformly radiating heat from the plurality of radiation sources 133. In certain embodiments, the one or more radiation sources 133 collectively form the entire airflow channel 111. In certain embodiments, the one or more radiation sources 133 collectively form a portion of the airflow channel 111, and other structures form another portion of the airflow channel 111.

In other embodiments, the airflow channels 111 are separate structures and are simultaneously mounted to each of the radiation sources 133. In combination with the foregoing embodiments, if the thermal conductivity of the airflow channel 111 is better, the airflow channel can exchange heat with each radiation source 133 at the same time, so as to provide the same heat dissipation effect for each radiation source 133.

In some embodiments, a first heat source (not shown) is disposed in the airflow channel 111. When the air flow in the first air channel a flows through the air flow channel 111, the air flow is heated by the first heat source to form a hot air flow with a certain air temperature, so that the drying effect and the comfort of the user of the drying device 10 are improved. In a further embodiment, as shown in fig. 1b, the air flow channel 111 is formed of a heat insulating material, such as mica, glass fiber, asbestos, rock wool, silicate, aerogel blanket, vacuum panel, etc., to provide heat insulation. The air flow in the first air duct a does not exchange heat with the first portion 131 of the radiation assembly 13 while passing through the air flow channel 111. The first heat source heats air when operating in the airflow channel 111, and if the airflow channel 111 is part of the radiation assembly 13 or the heat conduction performance of the airflow channel 111 is better, the air in the airflow channel 111 heats the radiation assembly 13 to cause the temperature to be too high. To avoid this, an air flow channel 111 of insulating material is mounted in the first portion 131 of the radiation assembly 13, such that the first heat generating source in the air flow channel 111 is thermally insulated from the radiation assembly 13, thereby avoiding heating the radiation assembly 13.

In addition, if the flow rate of the air flow in the air flow passage 111 is sufficiently large, the air flow may take away heat generated from the first heat source, thereby preventing the radiation member 13 from being heated by the first heat source. Thus, in some embodiments, the wind power assembly 12 and the first heat source are controlled by the relevant control strategy, and when the airflow velocity in the airflow channel 111 is greater than a preset value, the control allows the first heat source to operate, so that heat generated by the first heat source can be taken away in real time by airflow flowing through the airflow channel 111, thereby avoiding heating the radiation assembly 13. When the airflow velocity in the airflow channel 111 is detected to be lower than the preset value, the first heating source is controlled to be turned off. Thus, the drying apparatus 10 may also adopt the solution in fig. 1a, i.e. the first portion 131 of the radiation assembly 13 forms at least part of the air flow channel 111; alternatively, or in addition, to the solution shown in fig. 1b, an air flow channel 111 with better thermal conductivity is installed in the first portion 131; in this way, the air flowing through the air flow channel 111 can still dissipate heat from the first portion 131 (e.g. when the first heat source is not operating) according to the need.

As shown in fig. 1a, in some embodiments, a second heat generating source (not shown) is also provided within the intake space c. The first heat source and the second heat source only distinguish the positions of the first heat source and the second heat source, and the structures of the first heat source and the second heat source can be the same or different, and can be formed by structures such as resistance wires, electrothermal ceramics and the like. The second heat source generates heat upstream of the first air passage a, and can also cause the drying apparatus 10 to output a hot air flow. Compared with the first heat source, the second heat source is far away from the radiation component 13, so that the radiation component 13 is not heated during operation, but the heated air flows through the wind power component 12, so that the operation temperature of the wind power component 12 is increased. In practical applications, the working temperature of the radiation component 13, the working temperature of the wind component 12, the heating power of the first heat source/the second heat source, and other factors need to be balanced, and parameters such as wind temperature, wind resistance, wind volume, wind field, etc. are considered, so that the first heat source and the second heat source of the drying device 10 are correspondingly designed, and specifically any one of the following structures can be adopted:

(1) The drying apparatus 10 provides a first heat generating source in the air flow passage 111. The air flow inside the drying apparatus 10 is heated by the first heat generating source while passing through the air flow channel 111.

(2) The drying apparatus 10 provides a second heat generating source in the intake space c. The air flow inside the drying apparatus 10 is heated by the second heat generating source in the air intake space c.

(3) The drying apparatus 10 provides a first heat generating source in the airflow passage 111, and a second heat generating source in the airflow passage 111. The air flow in the drying apparatus 10 is heated by the second heat source in the air intake space c, and then secondarily heated by the first heat source while flowing through the air flow passage 111.

As shown in fig. 1a and 4, some embodiments provide a drying apparatus 10 in which a flow sleeve 14 is disposed within a housing 11. The wind assembly 12 is located inside the flow sleeve 14.

Referring to fig. 2a, 2b and 3a and 3b, a first gap duct 141 is formed between the wind power assembly 12 and the flow sleeve 14 for allowing air flow. A second gap air duct 142 is formed between the housing 11 and the flow sleeve 14 through which the air flow can flow.

In some embodiments, shown in fig. 2a and 2b, the second gap wind tunnel 142 forms at least part of the second wind tunnel upstream b ₁ The first gap air duct 141 forms at least part of the second air duct downstream b ₃ . That is, the air flow in the second air duct b first enters between the housing 11 and the flow guiding sleeve 14, flows along the second gap air duct 142 to form the second air duct upstream b ₁ Enters the flow sleeve 14 after heat exchange with the second part 132 of the radiation component 13 and flows along the first gap air channel 141 to form a second air channel downstream b ₃ And then merges into the intake space c. In this embodiment, the airflow flowing along the first gap duct 141 is heated by the radiation assembly 13, and heat is transferred to the wind assembly 12 to raise the operating temperature of the motor 121.

In other specific embodiments shown in fig. 3a and 3b, the first gap tunnel 141 forms at least part of the second tunnel upstream b ₁ The second gap wind channel 142 forms at least part of the second wind channel downstream b ₃ . That is, the air flow in the second air channel b enters the flow sleeve 14 first and flows along the first gap air channel 141 to form the second air channel upstream b ₁ Flows along the second gap air duct 142 after heat exchange with the second portion 132 of the radiation assembly 13 to form a second air duct downstream b ₃ And then merges into the intake space c. In this embodiment, the air flows along the first gap duct 141 Is not heated by the radiation assembly 13 and the motor 121 of the wind assembly 12 can be kept at a low operating temperature. However, the air flowing along the second gap duct 142 is heated by the radiation assembly 13, and the flowing process heats the housing 11, so that the temperature of the housing 11 increases.

The two embodiments have opposite advantages and disadvantages, and in practical use, a suitable embodiment can be selected according to the actual temperature rise conditions of the motor 121 and the housing 11. For example, if the motor 121 of the drying apparatus 10 itself is operated at a relatively high temperature, already close to the upper temperature limit of the wind power assembly 12 and nearby structures, the embodiments shown in fig. 3a, 3b should be used accordingly, avoiding the downstream b of the second wind channel ₃ Is flowing through the wind power assembly 12. For example, the radiation module 13 generates a larger amount of heat when the drying apparatus 10 is operated, resulting in a second air duct downstream b ₃ If the embodiment shown in fig. 3a and 3b is adopted, the housing 11 may be too hot to burn the user, so that the embodiment shown in fig. 2a and 2b is adopted to avoid the downstream b of the second air duct ₃ Is passed through the housing 11.

In some embodiments as shown in fig. 2a, 2b, 3a, and 3b, a third gap air duct 143 through which air can flow is formed between the second portion 132 and the housing 11, and the first gap air duct 141, the third gap air duct 143, and the second gap air duct 142 are sequentially connected. Third gap duct 143 forms at least a portion of midstream b of the second duct ₂ Midstream b of second air duct ₂ Is in heat exchange relationship with the second portion 132 of the radiation assembly 13.

In combination with the foregoing, in the embodiment shown in fig. 2a and 2b, the air flow in the second air duct b flows along the second gap air duct 142, the third gap air duct 143, and the first gap air duct 141 in order, and finally flows to the air intake space c. The direction of the air flow in the various parts of the housing 11 is shown in fig. 2c, where "·" indicates a direction outward from the vertical plane of the drawing and "×" indicates a direction inward from the vertical plane of the drawing (the other drawings are not repeated here). As shown, the direction of air flow in the first gap air duct 141 is opposite to the direction of air flow in the first air duct a, and the direction of air flow in the second gap air duct 142 is the same as the direction of air flow in the first air duct a.

In the embodiment shown in fig. 3a and 3b, the air flow in the second air duct b flows along the first gap air duct 141, the third gap air duct 143, and the second gap air duct 142 in order, and finally flows into the air intake space c. In fig. 3c, the direction of the air flow in each part of the housing 11 is shown, the direction of the air flow in the first gap air duct 141 is the same as the direction of the air flow in the first air duct a, and the direction of the air flow in the second gap air duct 142 is opposite to the direction of the air flow in the first air duct a.

In some embodiments as shown in fig. 2a, 2b, 3a, 3b, the end of the flow sleeve 14 facing the radiation assembly 13 has a first air guiding opening 144 communicating to a third gap air duct 143. In the foregoing different embodiments, the air flow in the third gap duct 143 may flow into the flow sleeve 14 through the first air guiding opening 144, or the air flow in the flow sleeve 14 flows out through the first air guiding opening 144 and then enters the third gap duct 143.

In some embodiments, as shown in fig. 5, the second portion 132 of the radiation assembly 13 is at least partially positioned between the flow sleeve 14 and the wind power assembly 12 such that the first wind-guiding opening 144 is formed by a gap between the second portion 132 and the flow sleeve 14. In other words, the second portion 132 and the flow sleeve 14 each form part of the first air guiding opening 144, and the air flow exchanges heat with the second portion 132 of the radiation assembly 13 when flowing through the first air guiding opening 144. In other embodiments, as shown in FIG. 2b, the first air guiding openings 144 are formed by the air guiding sleeve 14 itself, or the air guiding sleeve 14 and the wind power assembly 12 form the first air guiding openings 144. The first air guide openings 144 face the radiation assembly 13 to facilitate a smooth flow of air between the second portion 132 and the first air guide openings 144.

In certain embodiments, as shown in fig. 4 and 5, the radiation assembly 13 includes a drive circuit 135, a mounting base 134, and at least one radiation source 133. The drive circuit 135, the at least one radiation source 133 are each mounted on a mounting base 134, the mounting base 134 being adapted to provide support for the entire radiation assembly 13, the mounting base 134 being either indirectly or directly secured to the housing 11 or directly or indirectly secured to the air guiding sleeve 14.

The drive circuit 135 is used to power the radiation source 133 to emit infrared radiation. During continued operation, both the radiation source 133 and the drive circuit 135 generate heat. In certain embodiments, as shown in fig. 1a and 4, at least a portion of the radiation source 133 forms the second portion 132, i.e., the air flow in the second air path b dissipates heat from a portion of the radiation source 133. In other embodiments, as shown in fig. 4 and 5, at least a portion of the radiation source 133 and at least a portion of the driving circuit 135 simultaneously form the second portion 132, and the air flow in the second air duct b simultaneously dissipates heat from the radiation source 133 and the driving circuit 135. In other embodiments, not shown, at least a portion of the drive circuit 135 forms the second portion 132, i.e., the airflow in the second duct b dissipates heat only to the drive circuit 135.

In some more specific embodiments, as shown in fig. 4 and 5, the drive circuit 135 and the radiation source 133 are mounted on either side of the mounting base 134, respectively. Wherein the drive circuit 135 is located on the windward side of the mounting base 134, i.e. towards the wind power assembly 12; the radiation source 133 is mounted on the leeward side of the mounting base 134, i.e., facing away from the wind power assembly 12. When the air flow in the second air channel b dissipates heat of the radiation assembly 13, the air flow flows through the driving circuit 135 and then flows through the radiation source 133, so that heat of the radiation source 133 and the driving circuit 135 is dissipated simultaneously. In other embodiments, both the drive circuit 135 and the radiation source 133 may be mounted on the lee side of the mounting base 134. In this way, the drive circuit 135 and the radiation source 133 are not separated by the mounting base 134, and electrical connection therebetween is more easily achieved. In this embodiment, the air flow is blocked by the mounting base 134, which has a certain influence on heat dissipation of the driving circuit 135, and is suitable for the driving circuit 135 having a small heat generation amount.

In a more specific embodiment, one or more ventilation holes or ventilation notches (not shown) through which the air flow can pass are provided on the driving circuit 135, and the air flow can pass through the driving circuit 135 from the ventilation holes or ventilation notches, so that the wind resistance and wind noise influence of the driving circuit 135 on the air flow in the second air duct b are reduced. The vent hole refers to a hole formed on the driving circuit 135, and the vent notch refers to a concave notch formed at the edge of the driving circuit 135. Further, the design of wind resistance may be optimized for the whole driving circuit 135, for example, the ventilation holes and the ventilation gaps are all arc-shaped, or flying lines and pins on the windward side of the driving circuit 135 are reduced as much as possible, or related components or flying lines are avoided from occurring in the ventilation holes or the ventilation gaps, so as to reduce wind resistance and wind noise generated when the airflow flows through the driving circuit 135 as much as possible.

In some embodiments, as shown in fig. 1a, the radiation source 133 includes a reflector cup (not shown) and a luminescent member (not shown). The luminous member is installed in the light reflecting cup, and infrared radiation emitted outward by the luminous member is collected by the inner wall of the light reflecting cup and emitted to the outside of the drying apparatus 10. The outer wall of the reflector cup constitutes the outer wall of the radiation assembly 13, and thus, in the relevant figures, the outer wall of the radiation assembly 13 can be regarded as the outer wall of the reflector cup. As shown in fig. 2b, at least part of the third gap air duct 143 is formed between part of the outer wall of the reflector cup and the housing 11. The air flowing in the third gap duct 143 dissipates heat from the outer wall of the reflector cup.

More specifically, as shown in fig. 2b and 4, the reflector cup is shaped such that one end has a smaller outer diameter (the mounting end of the light emitting member) and the other end has a larger outer diameter (the light emitting end). The end of the reflector cup with smaller outer diameter is mounted on the mounting base 134, the outer wall of the end of the reflector cup with larger outer diameter forms a seal with the housing 11, and a third gap air duct 143 is formed near the seal.

As shown in fig. 2a and 2b, the third gap air duct 143 gradually decreases in size in a direction of directing the light emitted from the radiation assembly 13. Midstream b of second air duct ₂ The air flow flowing into the third gap air duct 143 contacts with the second part 132 of the reflector cup (radiation component 13) and dissipates heat, and the third gap air duct 143 forms the limit position of the left end of the second air duct b, and the air flow is guided to turn back after flowing into the region and is along the downstream b of the second air duct ₃ To the right end of the drawing (i.e., in the direction of the intake space c).

In some embodiments, a portion of the outer wall of the radiation assembly 13 (i.e., the outer wall of the reflector cup) is connected to the housing 11 and forms the second portion 132, and another portion of the outer wall of the radiation assembly 13 (i.e., the outer wall of the reflector cup) forms the first portion 131. In combination with the foregoing embodiments, the first portion 131 forms at least part of the airflow channel 111, and the outer wall of the radiation assembly 13 is located in the airflow, where one portion exchanges heat with the first channel a and the other portion exchanges heat with the second channel b. That is, the radiation assembly 13 is integrally located in the air flow formed inside the drying apparatus 10, and the high-speed air flow flows through the portion thereof having low wind resistance, and the low-speed air flow flows through the portion thereof having high wind resistance, so that the heat dissipation effect and the small wind noise and wind resistance can be simultaneously achieved.

As shown in fig. 3a and 3b, in some embodiments, the first gap wind tunnel 141 forms at least part of the second wind tunnel upstream b ₁ . The end of the flow sleeve 14 remote from the radiation assembly 13 forms a mutual seal with the wind power assembly 12. In other words, the end of the flow sleeve 14 near the radiation assembly 13 is an open end (provided with the first air guiding opening 144), and the other end is a closed end, and the air flow in the first gap air channel 141 is limited to be only in the direction of the radiation assembly 13. More specifically, an end wall 146 is provided at an end of the flow sleeve 14 adjacent the inlet space c, the end wall 146 being connected to an outer wall or end of the wind power assembly 12 and forming a mutual seal with the wind power assembly 12, thereby closing the end of the flow sleeve 14.

In other embodiments as shown in fig. 2a and 2b, the first gap tunnel 141 forms at least part of the second tunnel downstream b ₃ And the end of the flow guiding sleeve 14 away from the radiation component 13 is provided with a second air guiding opening 145, and the second air guiding opening 145 is directly or indirectly connected to the air inlet space c. In other words, both ends of the flow sleeve 14 are open ends, and the air flow can enter from one end and exit from the other end. Since a negative pressure is created in the inlet space c when the wind power assembly 12 is in operation, the air flow in the flow sleeve 14 is directed as: enters the flow sleeve 14 from the first air guiding opening 144 and then exits from the second air guiding opening 145 and merges into the air intake space c. As shown in fig. 2c, the direction of air flow in the flow sleeve 14 is opposite to the direction of air flow in the first air duct a.

In some embodiments, referring to fig. 2c and 3c, the wind power assembly 12 is cylindrical or conical, the flow sleeve 14 is cylindrical or conical, and the annular space formed between the wind power assembly 12 and the flow sleeve 14 forms a first gap wind tunnel 141. The air flow in the second duct b is evenly distributed in the annular space around the outer wall of the wind assembly 12 as it flows in the first gap duct 141. In the manner shown in fig. 3a, 3b and 3c, the annular air flow flowing out of the first gap duct 141 provides a uniform heat dissipation effect to the second portion 132. In connection with certain embodiments described above, the radiation assembly 13 includes a plurality of radiation sources 133 arranged in a ring, and the ring-shaped air flow is capable of providing the same heat dissipation effect to each radiation source 133, thereby operating each radiation source 133 at the same operating temperature.

In some embodiments, the flow sleeve 14 is cylindrical or conical, the housing 11 is cylindrical or conical, and the annular space formed between the flow sleeve 14 and the housing 11 forms the second gap wind channel 142. The air flow in the second air duct b is evenly distributed in the annular space around the outer wall of the flow sleeve 14 as it flows in the second gap air duct 142. As shown in connection with fig. 2a and 2c, the outgoing air flow in the second gap duct 142 also contacts the radiation assembly 13 in a ring shape, thereby providing a uniform heat dissipation effect to the radiation assembly 13 throughout.

As shown in fig. 2c or fig. 3c, in some embodiments, the first gap wind channel 141 and the second gap wind channel 142 are both annular, and the airflows in the two are approximately uniformly distributed in the radial direction, so that the airflows can flow smoothly between the two.

As shown in fig. 1a, in some embodiments, the housing 11 of the drying apparatus 10 includes a main body 114 and a handle 115. Wherein the radiation component 13 and the first air duct a are located in the main body 114, and the main body 114 is provided with a first air inflow port 112, and the first air inflow port 112 is directly or indirectly communicated with the air inlet space c. One end of the handle 115 is connected to the main body 114, the second air duct b is at least partially located on the handle 115, and a second air inlet 1151 directly or indirectly connected to the second air duct b is formed on the handle 115.

When the wind power assembly 12 operates, negative pressure is formed in the air inlet space c, and the air flows in the first air duct a and the second air duct b are formed under the influence of the negative pressure, and the specific flow paths are as follows:

first wind channel a: the air in the air intake space c is sucked by the wind power assembly 12 to form a high-speed air flow, and flows along the wind power assembly 12 and the air flow passage 111 and out of the drying apparatus 10. Wherein, the air in the air inlet space c is partially from the first air flow inlet 112, and partially from the second air duct b.

Second wind channel b: external air enters the handle 115 from the second air flow inlet 1151, flows along the interior of the handle 115, enters the main body 114, has at least two flow paths, and finally flows into the air intake space c.

As can be seen from the above process, the drying apparatus 10 simultaneously sucks air from the first air flow inlet 112, the second air flow inlet 1151, and outputs an air flow through the air flow channel 111. One of the first air flow inlet 112 and the second air flow inlet 1151 is blocked and the drying apparatus 10 is still capable of outputting an air flow and providing a certain drying effect.

In some embodiments, as shown in fig. 6, the first air flow inlet 112, the second air flow inlet 1151 of the drying apparatus 10 are both disposed on the main body 114. Air enters only from the main body 114, and forms a first air passage a and a second air passage b in the main body 114, and no air flow is formed in the handle 115. In other embodiments not shown, the first air flow inlet 112 and the second air flow inlet 1151 may be provided on the handle 115, i.e., air only enters the interior of the housing 11 from the handle 115 and then flows to the main body 114.

In the embodiment shown in fig. 6, the first air flow inlet 112 and the second air flow inlet 1151 are disposed adjacent and at the same end of the main body 114.

In other embodiments, shown in fig. 7, the second airflow inlet 1151 is positioned away from the first airflow inlet 112 and is positioned at different locations on the main body 114, with airflow entering the main body 114 from different locations on the main body 114. More specifically, the second air inlet 1151 is disposed on the housing 11 at a position near the second portion 132 of the radiation assembly 13, and the air flows from the second air inlet 1151 into the housing 11 to exchange heat with the second portion 132 and form a second air channel b. In other embodiments, not shown, the second portion 132 and the housing 11 together form a second air flow inlet 1151, i.e. a gap remains between the housing 11 and the radiation assembly 13, which gap forms the second air flow inlet 1151. The gas enters the second gas flow inlet 1151 while exchanging heat with the second portion 132.

As shown in fig. 1a and 4, in some embodiments, the housing 11 further includes a connection 116 that communicates between the main body 114 and the handle 115. The interior of the connecting portion 116 forms a passageway for the airflow within the handle 115 to enter the main body 114. The connection portion 116 itself constitutes a portion where the handle 115 and the main body 114 are structurally connected to each other to secure connection strength therebetween.

In some embodiments, as shown in fig. 3a and 3b, one end of the connection portion 116 is directly or indirectly connected to the handle 115, and the other end is directly or indirectly connected to the first gap air duct 141. The air flow in the handle 115 enters the first gap air duct 141 along the connection portion 116 and then flows along the third gap air duct 143, the second gap air duct 142, and the air intake space c in this order.

More specifically, the flow sleeve 14 is provided with an opening, and the connection portion 116 communicates with the opening. After the airflow in the handle 115 flows along the connection portion 116, the airflow enters the interior of the flow sleeve 14 through the opening and flows along the first gap air channel 141. In combination with some of the embodiments described above, one end of the flow sleeve 14 is a closed end, and the airflow into the flow sleeve 14 is restricted to flow only in the direction of the first air guiding opening 144. The direction of the air flow in the connection portion 116 and the first gap air duct 141 can also be shown in fig. 3 c.

In other embodiments, as shown in fig. 2a and 2b, the connection portion 116 is directly or indirectly connected to the handle 115 at one end and directly or indirectly connected to the second gap air duct 142 at the other end. Correspondingly, the air flow flowing out of the handle 115 enters the second gap duct 142 along the connection portion 116, then flows along the third gap duct 143, the first gap duct 141, and finally flows to the air intake space c.

More specifically, a portion of the connection portion 116 near the radiation assembly 13 is provided with a notch, and a portion of the connection portion 116 far from the radiation assembly 13 and the flow sleeve 14 are mutually closed. The connection 116 communicates with the second gap duct 142 through the notch, and the air flow from the connection 116 into the main body 114 is restricted to flow only in the direction of the notch and enters the second gap duct 142 through the notch. The direction of airflow within the connection 116 and the second gap duct 142 may be as shown with reference to fig. 2 c.

In some embodiments, as shown in fig. 4, the connection 116 is generally hollow cylindrical in structure. One end of the connection portion 116 is inserted into the inside of the main body 114, and the end may be integrally formed with the housing 11. The other end of the connection portion 116 is exposed outside the main body 114. In the process of manufacturing and assembling the drying apparatus 10, the exposed end of the connection part 116 is inserted into the handle 115, and the connection part 116 and the handle 115 are fixed to each other by means of gluing, screws, clamping, etc., so that the mounting and fixing between the handle 115 and the main body 114 can be completed. In other embodiments, the connecting portion 116 may be integrally formed with the handle 115, and inserted into the main body 114 and fixed to the main body 114 during assembly. In other embodiments, the connecting portion 116 may be a separate structure, and both ends of the connecting portion 116 may be assembled and fixed with the main body 114 and the handle 115, respectively, when assembled.

In some embodiments, as shown in FIG. 1a, the intake space c is provided with a filter structure 117, the filter structure 117 being sealingly mounted to the upstream end of the wind power assembly 12. The filtering structure 117 divides the intake space c into a first space and a second space, wherein the first space is located within the filtering structure 117 and communicates with the upstream end of the wind assembly 12. The second space is located outside the filter structure 117 and communicates with the first air flow inlet 112 and the second air duct b. The air flow from the first air flow inlet 112 and the second air duct b passes through the filtering structure 117 to enter the first space of the air inlet space c, and is sucked into the first air duct a by the wind power assembly 12 to flow.

The filtering structure 117 not only can prevent foreign matters such as dust, hair and the like from entering the wind power assembly 12, but also can absorb high-frequency noise generated by the operation of the wind power assembly 12 so as to reduce noise heard by a user when using the drying apparatus 10.

In some more specific embodiments, as shown in fig. 1a, the filter structure 117 has a filter inner wall 1172, a filter outer wall 1171, and a plurality of filter channels 1173 open between the filter inner wall 1172 and the filter outer wall 1171. The second duct b, the first air flow inlet 112, is directly or indirectly connected to the filter passage 1173. In other words, during operation of wind assembly 12, outer filter wall 1171 forms an air inlet face of filter structure 117 and inner filter wall 1172 forms an air outlet face of filter structure 117.

For air flow from the second duct b, the first air flow inlet 112, it is necessary to flow from the filter outer wall 1171 to the filter inner wall 1172 through the plurality of filter channels 1173 to enter the first space of the air intake space c and then to the wind assembly 12 along the first duct a. The air flow is filtered while passing through the filter passage 1173, and foreign substances are blocked outside the filter outer wall 1171. For high frequency noise generated by wind assembly 12, it propagates along the following path: the first space of the air intake space c, the filter inner wall 1172, the filter passage 1173, the filter outer wall 1171, the second space of the air intake space c, and the first air inflow port 112 are mostly absorbed when the high frequency noise passes through the filter passage 1173 in the above process, so that the high frequency noise from the first air inflow port 112 is heard by the user when using the drying apparatus 10 is reduced.

As shown in fig. 1a, in some embodiments, the first gas flow inlet 112 may be annular, or the first gas flow inlet 112 may include a plurality of holes arranged along an annular shape. After the air enters the housing 11 from the first air inflow port 112, a substantially annular air flow is formed in the second space of the air intake space c and flows toward the outer wall of the filter structure 117, uniformly passing through the filter passage 1173 from the filter outer wall 1171 in the radial direction of the filter structure 117 into the first space of the air intake space c.

In some more specific embodiments, the projected pattern formed by the filter structure 117 is located inside the projected pattern formed by the first air flow inlet 112 on any plane perpendicular to the axis of the first air duct a. In this way, the air flow entering the housing 11 from the first air flow inlet 112 is located in the second space of the air intake space c and surrounds the outside of the filter structure 117, and then enters the first space of the air intake space c through the filter passage 1173. The air flow from the first air flow inlet 12 is uniformly converged into the first space of the air intake space c in the circumferential direction, which is advantageous for improving the smoothness of the air flow in the first air duct a.

In a more specific embodiment, the filter structure 117 as a whole extends generally along the axial direction of the first air channel a, and the filter channel 1173 extends generally along the radial direction of the first air channel a. Air flow from the first air flow inlet 112 and the second air duct downstream b ₃ From the filter passage 1173, through the filter structure 117 and into the aforementioned enclosed space, and then merges into the upstream end of the wind power assembly 12 and forms the air flow in the first air passage a.

Referring to fig. 1a, the air flow from the second air duct b flows generally rightward in the drawing (opposite to the air flow direction in the first air duct a) into the air intake space c, and the air flow from the first air flow inlet 112 flows generally leftward in the drawing (same as the air flow direction in the first air duct a) into the air intake space c. Thus, in the inlet space c, the flow directions of the two are opposite and are substantially perpendicular to the extending direction of the filter passage 1173, and the two are mixed with each other in the radial direction through the filter structure 117 to form a gas flow having substantially the same direction, and a relatively smooth gas flow is formed in the filter structure 117 and is converged into the upstream end of the wind power assembly 12. If the filtering structure 117 is not disposed in the air intake space c, not only the filtering and noise reduction effects described above cannot be achieved, but also turbulent flow is generated when two air flows in opposite directions in the air intake space c meet, which affects the running noise of the wind power assembly 12 and the smoothness of the output air flow.

In the description of the present specification, reference is made to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., meaning that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. The utility model provides a drying equipment, includes casing, its characterized in that is equipped with in the casing:

the air flow of the first air channel flows out of the shell from the air flow channel;

a second air duct;

a wind assembly comprising a motor for generating an air flow in the first air duct and/or the second air duct;

a radiation assembly comprising a first portion and a second portion;

the first portion forms at least part of the airflow channel, or the airflow channel is mounted to the first portion;

the second portion exchanges heat with the air flow in the second air duct, and at least part of the air flow in the first air duct comes from outside the second air duct.

2. Drying apparatus according to claim 1 wherein the wind assembly is at least partially disposed in the first duct for generating an air flow in the first duct.

3. Drying apparatus according to claim 2 in which an air intake space is formed within the housing, the wind assembly being located at least partially downstream of the air intake space, downstream of the second duct being in direct or indirect communication with the air intake space.

4. A drying apparatus according to claim 3 wherein the second duct air flow is all directed into the first duct.

5. The drying apparatus according to claim 4, wherein at least a portion of the air flow in the second duct is in a direction opposite to the air flow in the first duct.

6. The drying apparatus according to claim 5, wherein the air stream upstream of the second air duct is heat exchanged with the second portion, and wherein at least a portion of the air stream downstream of the second air duct has a flow direction opposite to a flow direction of the air stream in the first air duct.

7. A drying apparatus according to claim 3, wherein the downstream end of the wind power assembly is sealingly mounted to the air flow channel and the upstream end of the wind power assembly communicates directly or indirectly with the air intake space.

8. The drying apparatus according to claim 1, wherein the radiation assembly comprises one or more radiation sources, each of the radiation sources being arranged along a ring or a portion of a ring, the air flow channel being surrounded by one or more of the radiation sources.

9. Drying apparatus according to claim 8 wherein at least part of each of the radiation sources together form at least part of the air flow channel or the air flow channels are mounted to each of the radiation sources simultaneously.

10. Drying apparatus according to claim 1 wherein a first heat generating source is provided in the airflow path.

11. Drying apparatus according to claim 10 wherein the air flow passage is formed from an insulating material.

12. A drying apparatus according to claim 3, wherein a second heat generating source is provided in the air intake space.

13. Drying apparatus according to claim 1 wherein a portion of the outer wall of the radiation assembly is connected to the housing and constitutes the second portion and another portion of the outer wall of the radiation assembly constitutes the first portion.

14. Drying apparatus according to any one of claims 1 to 13 wherein a flow sleeve is provided within the housing, the wind assembly being located within the flow sleeve, a first gap duct being defined between the wind assembly and the flow sleeve through which the air flow can pass, a second gap duct being defined between the housing and the flow sleeve through which the air flow can pass;

The first gap duct forming at least part of the upstream side of the second duct, the second gap duct forming at least part of the downstream side of the second duct; or alternatively, the first and second heat exchangers may be,

the second gap duct forms at least part of the upstream of the second duct, and the first gap duct forms at least part of the downstream of the second duct.

15. The drying apparatus according to claim 14, wherein a third gap duct through which air flows is formed between the second portion and the housing, the first gap duct, the third gap duct, and the second gap duct being in communication in sequence, the third gap duct constituting at least a portion of the midstream of the second duct.

16. The drying apparatus according to claim 15, wherein an end of the flow sleeve facing the radiation assembly has a first air guiding opening communicating to the third gap air duct.

17. Drying apparatus according to claim 16 wherein the second portion is located at least partially between the flow sleeve and the wind power assembly, a gap between the second portion and the flow sleeve forming the first wind-guiding opening.

18. The drying apparatus according to claim 17, wherein the radiation assembly comprises a drive circuit, a mounting base, and at least one radiation source;

At least a portion of the radiation source constitutes the second portion; and/or at least a portion of the drive circuit constitutes the second portion.

19. Drying apparatus according to claim 18 wherein the drive circuit is provided with one or more ventilation apertures or ventilation notches through which the air flow passes.

20. The drying apparatus according to claim 18, wherein the radiation source comprises a reflector cup and a light emitting element mounted within the reflector cup, and wherein at least a portion of the third gap air duct is formed between a portion of an outer wall of the reflector cup and the housing.

21. Drying apparatus according to claim 14 wherein the first gap duct forms at least part of the upstream of the second duct, the end of the flow sleeve remote from the radiation assembly being mutually closed with the wind power assembly.

22. The drying apparatus according to claim 14, wherein the first gap duct forms at least part of the second duct downstream, and the flow sleeve is provided with a second air guiding opening at an end remote from the radiation assembly.

23. The drying apparatus according to claim 14, wherein the wind assembly is cylindrical or conical, the flow sleeve is cylindrical or conical, and an annular space formed between the wind assembly and the flow sleeve constitutes the first gap wind tunnel; and/or the number of the groups of groups,

The flow guide sleeve is cylindrical or conical, the shell is cylindrical or conical, and an annular space formed between the flow guide sleeve and the shell forms the second clearance air channel.

24. The drying apparatus according to claim 14, wherein the housing comprises:

the radiation component and the first air duct are positioned in the main body, and the main body is provided with a first air inflow port which is directly or indirectly communicated with the first air duct;

the handle, handle one end is linked together to the main part, the second wind channel is located at least partly the handle, offer directly or indirectly to the second air inlet in second wind channel on the handle.

25. The drying apparatus according to claim 24, wherein the housing further comprises a connection portion connected between the main body and the handle;

one end of the connecting part is directly or indirectly communicated with the handle, and the other end of the connecting part is directly or indirectly communicated with the first clearance air duct;

or alternatively, the first and second heat exchangers may be,

one end of the connecting part is directly or indirectly communicated with the handle, and the other end of the connecting part is directly or indirectly communicated with the second clearance air duct.

26. The drying apparatus according to claim 25, wherein the flow sleeve is provided with openings, and the connection portion is connected to the openings.

27. The drying apparatus according to claim 25, wherein a portion of the connecting portion adjacent to the radiation assembly is provided with a notch, and the connecting portion communicates with the second gap air duct through the notch;

the part of the connecting part far away from the radiation component and the flow guide sleeve are mutually closed.

28. Drying apparatus according to claim 1 wherein the housing is provided with a first air flow inlet and a second air flow inlet, the first air duct being in direct or indirect communication with the first air flow inlet and the second air duct being in direct or indirect communication with the second air flow inlet.

29. A drying apparatus according to claim 3, wherein the housing is provided with a first air flow inlet which communicates directly or indirectly with the air intake space.

30. Drying apparatus according to claim 29 wherein the air intake space is provided with a filter structure sealingly mounted to the upstream end of the wind power assembly;

air flows from the first air flow inlet and the second air duct enter the wind power assembly after passing through the filtering structure.

31. The drying apparatus according to claim 30, wherein the filter structure has a filter inner wall, a filter outer wall, and a plurality of filter channels open between the filter inner wall and the filter outer wall, and the second air duct and the first air flow inlet are directly or indirectly connected to the filter channels.

32. The drying apparatus according to claim 31, wherein each of the filter passages extends generally in a radial direction of the first air duct.

33. The drying apparatus according to claim 31, wherein the first gas flow inlet is annular or the first gas flow inlet comprises a plurality of holes arranged along an annular shape.

34. Drying apparatus according to claim 1, wherein the drying apparatus has a first air flow inlet and a second air flow inlet independent of each other;

the first air inflow port is directly or indirectly communicated with the first air duct;

the second air flow inlet is directly or indirectly communicated with the second air duct, and air entering the shell from the second air flow inlet flows through the second part.

35. Drying apparatus according to claim 34 wherein the housing is provided with the second air flow inlet; or, the housing and the second portion together form the second airflow inlet.