CN216875357U

CN216875357U - Drying apparatus

Info

Publication number: CN216875357U
Application number: CN202123451346.8U
Authority: CN
Inventors: 唐尹; 徐兴旺; 黄通尧
Original assignee: Shenzhen Ruyuan Technology Co ltd
Current assignee: Shenzhen Ruyuan Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-05
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a drying device, comprising: the air duct is arranged in the shell and provided with an airflow inlet and an airflow outlet; the motor is arranged in the shell and is used for forming airflow in the air duct; a plurality of radiation sources disposed within the housing, each radiation source for generating infrared radiation; the heater is arranged in the air duct and used for heating the airflow in the air duct; a spacer, at least a portion of the spacer being positioned between the plurality of radiation sources and the heater. Above-mentioned drying equipment is through setting up a plurality of radiants and heater for can realize the high temperature in the object short time that needs the drying, satisfy the demand of stereotyping, can not last the toasting of high temperature air current to the target object moreover, can promote user experience.

Description

Drying apparatus

Technical Field

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

Background

There are certain modes of operation of drying apparatus, such as hair dryers, which require styling of the object to be dried (e.g. hair) in a short period of time, and which require a high temperature output for a short period of time.

Drying equipment among the correlation technique, for example the hair-dryer through heating wire heated air, utilizes the motor to blow out hot-air to user's hair, though can export high temperature in the short time and satisfy the design demand, but this kind of high temperature air current is to the lasting of hair toasting, and long-term use can cause the damage to hair matter, is unfavorable for user experience.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides drying equipment.

A drying apparatus of an embodiment of the present invention includes:

the air duct is arranged inside the shell and provided with an airflow inlet and an airflow outlet;

the motor is arranged in the shell and is used for forming airflow in the air duct;

a plurality of radiation sources disposed within the housing, each radiation source for generating infrared radiation;

the heater is arranged in the air duct and used for heating the airflow in the air duct;

a spacer, at least a portion of the spacer being positioned between the plurality of radiation sources and the heater.

Above-mentioned drying equipment is through setting up a plurality of radiants and heater for can realize the high temperature in the object short time that needs the drying, satisfy the demand of stereotyping, can not last the toasting of high temperature air current to the target object moreover, can promote user experience.

In certain embodiments, at least a portion of the radiation source is located downstream of the motor in a direction of flow of the gas stream.

In some embodiments, a plurality of the radiation sources are located outside the air duct, and a plurality of the radiation sources are located on one side of the air flow outlet; alternatively, the first and second electrodes may be,

the plurality of radiation sources are positioned outside the air duct and connected to form a ring shape and surround the airflow outlet at the circumferential outer side.

In some embodiments, the heater is positioned between the plurality of radiation sources and the motor in a direction of flow of the gas stream.

In certain embodiments, the heater is positioned substantially midway between the plurality of radiation sources and the motor, and the heater is spaced apart from the plurality of radiation sources and the motor, respectively.

In some embodiments, the radiation source includes a light emitter, the spacer includes a reflective cup, the reflective cup is mounted to the housing, the reflective cup has an opening facing away from the motor, the light emitter is mounted within the reflective cup, the light emitter is configured to emit radiation having an infrared band, and the reflective cup is configured to direct the infrared radiation outside of the housing.

In some embodiments, the reflector cup comprises:

a first portion located outside of the air duct;

a second portion connected to the first portion and in heat exchange with the air duct.

In some embodiments, each of the radiation sources includes a reflector cup and a luminescent element, each of the reflector cups is mounted in the housing, each of the luminescent elements is located in a corresponding one of the reflector cups, the luminescent element is configured to emit radiation having an infrared band, the reflector cups are configured to direct the radiation to an exterior of the housing, each of the reflector cups has an opening facing away from the motor, and the spacer is disposed between a plurality of the reflector cups and the heater.

In certain embodiments, at least a portion of the partition is configured as a flow guide positioned within the air chute and configured to direct at least a portion of the air flow away from the radiation source.

In certain embodiments, a plurality of the radiation sources are disposed about the gas flow outlet, one end of the spacer is connected to the housing, the other end of the spacer extends inwardly and away from the radiation sources in a direction toward the gas flow outlet, an avoidance cavity is formed between the spacer and the housing, and at least a portion of the plurality of radiation sources is received within the avoidance cavity.

In some embodiments, a surface of the separator facing the heater is formed to be streamlined.

In certain embodiments, the insulation is thermal insulation.

In certain embodiments, the heater is configured as a ring and the heater has a radial dimension that is slightly larger than a radial dimension of the motor.

In some embodiments, the housing includes a body and a handle, the body being coupled to the handle, the heater being located within the body and/or within the handle, and the motor being located within the body and/or within the handle.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

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

fig. 1 to 13 are schematic structural views of a drying apparatus according to an embodiment of the present invention;

fig. 14 to 15 are schematic views showing the positional relationship between the radiation source and the gas flow outlet of the drying apparatus according to the embodiment of the present invention;

fig. 16 is a schematic structural view in the main body of the drying apparatus of the embodiment of the present invention;

FIG. 17 is a schematic view of the distribution of optical elements and radiation sources of a drying apparatus according to an embodiment of the present invention;

fig. 18 is a schematic view of a partial structure of a drying apparatus of an embodiment of the present invention;

fig. 19 is another schematic view of a partial structure of a drying apparatus according to an embodiment of the present invention;

fig. 20 is a side view of a partial structure of a drying apparatus according to an embodiment of the present invention;

fig. 21 is a sectional view of a partial structure of a drying apparatus of the embodiment of the present invention;

fig. 22 is another sectional view of a partial structure of the drying apparatus of the embodiment of the present invention;

fig. 23 is another schematic view of a partial structure of a drying apparatus according to an embodiment of the present invention;

fig. 24 is an enlarged view of portion C of fig. 23;

fig. 25 is another schematic view of a partial structure of a drying apparatus according to an embodiment of the present invention;

FIG. 26 is a plan view of a part of the structure of the drying apparatus according to the embodiment of the present invention;

fig. 27 is a plan view showing another structure of a part of the drying apparatus according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different features of the utility model. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The embodiment of the utility model provides drying equipment. Drying apparatus of embodiments of the present invention may utilize multiple radiation sources and heaters to generate heat to remove water and moisture from objects (e.g., hair, fabrics). The radiation source can emit infrared energy having a predetermined wavelength range and power density to heat the object. The heater may heat the air flow, and the drying device blows the heated air flow toward the object. Drying devices include, but are not limited to, blowers, body dryers, hand dryers, bathroom heaters, and the like. In the embodiment of the present invention, the drying apparatus is explained by taking a blower as an example.

In the related art, heat transfer mainly includes three basic forms: thermal radiation, thermal conduction, thermal convection, wherein thermal conduction and thermal convection require heat conduction by means of a medium, while thermal radiation is the direct transfer of heat by electromagnetic waves. The plurality of heat generating sources of the drying apparatus in the embodiment of the present invention may include a radiation source, that is, a structure for transferring heat by heat radiation, which can emit infrared rays having a predetermined wavelength range and power density to heat an object, and/or a non-radiation source; a non-radiative source refers to a structure that transfers heat by thermal convection or conduction, and includes, for example, an electric heating element that can heat an air flow, so that the heated air flow is blown against an object to heat the object.

Referring to fig. 1 and 2, a drying apparatus 100 according to an embodiment of the present invention may include a housing 12, a motor 14, a radiation source 36, and a heater 43. An air duct 20 is provided inside the housing 12. The housing 12 may house various electrical, mechanical, and electromechanical components, such as the motor 14, the radiation source 36, the heater 43, a control board (not shown), and a power source (not shown), among others.

The housing 12 may include a body 16 and a handle 18, the body 16 coupled to the handle 18, the handle 18 being graspable by a user, each of the body 16 and the handle 18 being adapted to receive at least a portion of the electrical, mechanical, and electromechanical components therein. In some embodiments, the body 16 and the handle 18 may be integrally connected. In some embodiments, the body 16 and the handle 18 may be separate components. For example, the handle 18 may be removably connected to the body 16. In one example, the detachable handle 18 may house a power source (e.g., one or more batteries) therein for powering the drying apparatus 100.

The housing 12 may be made of an electrically insulating material. Examples of the electrical insulating material may include polyvinyl chloride (PVC), polyethylene terephthalate (PET), Acrylonitrile Butadiene Styrene (ABS), polyester, polyolefin, polystyrene, polyurethane, thermoplastic, silicone, glass, fiberglass, resin, rubber, ceramic, nylon, and wood. The housing 12 may also be made of a metallic material coated with an electrically insulating material, or a combination of an electrically insulating material and a metallic material that may or may not be coated with an electrically insulating material. For example, an electrically insulating material may constitute an inner layer of the housing 12, while a metallic material may constitute an outer layer of the housing 12.

The housing 12 may have one or more air channels 20 disposed therein, and the air flow generated by the motor 14 is capable of flowing stably within the air channels 20, being directed or conditioned through the air channels 20 and toward an object (e.g., a user's hair). In more particular embodiments, the air chute 20 is a structurally defined air flow path, and the structure within the air chute 20 that blocks air flow should be minimized to avoid undesirable air flow disturbances.

The air chute 20 may have an airflow inlet 22 and an airflow outlet 24. In a specific embodiment, as shown in fig. 1, the airflow inlet 22 and the airflow outlet 24 may be placed at opposite ends of the drying apparatus 100 along a longitudinal direction of the drying apparatus 100 (a left-right direction as shown in fig. 1). Airflow inlet 22 and airflow outlet 24 may each be a vent that allows for efficient airflow throughput. When the motor 14 is in operation, a negative pressure is created at the airflow inlet 22, ambient air is drawn into the air chute 20 through the airflow inlet 22 to create an airflow, and the created airflow may exit the air chute 20 through the airflow outlet 24. In another specific embodiment, as shown in FIG. 6, the airflow inlet 22 may also be provided on the handle 18, such as at an end of the handle 18 distal from the body 16, so that airflow passes through the handle 18 and the body 16 in sequence. In another specific embodiment, as shown in FIG. 7, an airflow inlet 22 is provided on each of the handle 18 and the body 16 to allow airflow to be split into two paths into the drying appliance 100. Depending on the airflow inlet 22, the motor 14 may be located on the main body 16, or on the handle 18, or may be located partially on the main body 16, or partially on the handle 18, which can act on the airflow in the air duct 20, and the specific location is not limited herein, and the cross-sectional shape of the airflow outlet 24 may be any shape, preferably, a ring shape, a circle shape, an oval shape, a rectangle (rectangle), a square shape, or various variants of circle and polygon, such as a hexagon with rounded corners, etc. And is not particularly limited herein.

The motor 14 is disposed within the housing 12 and is used to generate an airflow in the air chute 20. Specifically, the motor 14 may be disposed within the body 16 or within the handle 18, and the motor 14 may also be disposed within the body 16 and within the handle 18.

Referring to fig. 18 and 21, the motor 14 may include a driving portion 26 and an impeller 28. When impeller 28 is driven by drive 26, the rotation of impeller 28 may draw ambient air into air chute 20 through airflow inlet 22 to create an airflow, push the created airflow through air chute 20, and expel the airflow from airflow outlet 24. The motor 14 may comprise a brushless motor 14, and the rotational speed of the impeller 28 may be adjusted under the control of a controller (not shown).

In one embodiment, please refer to fig. 18 and 21, the outer circumferential surface of the driving portion 26 has a rectifying cylinder 32, the rectifying cylinder 32 is cylindrical, the rectifying cylinder 32 is connected with the outer circumferential surface of the driving portion 26 through a guide vane 34, and the impeller 28 is rotatably disposed in the rectifying cylinder 32. In the flow direction of the airflow, the impeller 28 is located upstream of the guide vanes 34, and the drive portion 26 drives the impeller 28 to rotate when activated. When the impeller 28 rotates, the airflow can be accelerated to enter the rectifying cylinder 32, the guide vanes 34 can rectify the airflow entering the rectifying cylinder 32, and then the airflow exits from the motor 14 through the driving portion 26, and the motor 14 provided with the rectifying cylinder 32 can accelerate and rectify the airflow, so that the drying device 100 can output stable airflow. For example, when the drying device 100 is used to dry hair, the rectified steady airflow helps to make the hair soft and smooth during the drying process, so the degree of the steady airflow is an important performance index for the drying device 100.

The radiation source 36 may be disposed within the housing 12. The number of radiation sources 36 is plural, for example two or more than two.

The heater can be arranged in the air duct and is used for heating the air flow in the air duct. The number of heaters may be at least one, such as one heater, or a plurality of heaters.

On the premise of maintaining the same drying efficiency, the power of the radiation source 36 and the heater 43 can be reduced, and the heat is not concentrated at one position in the drying apparatus 100, thereby ensuring the reliability of the drying apparatus 100. Moreover, a plurality of structures with smaller power replace a structure with larger power, so that the design of the related internal structures is more flexible, the requirements on flame retardance and heat insulation indexes of related parts are reduced, and particularly for the drying equipment 100 with highly integrated internal structures, the radial size of the drying equipment can be greatly reduced.

Further, the thermal radiation emitted by the radiation source 36 may act directly on the moisture, for example, the wavelength of the radiation source 36 is designed to be easily absorbed by water molecules, but not by objects such as hair, so that only the moisture is heated; the hot air flow heated by the heater directly acts on the surface of the object, and the object and the moisture are heated simultaneously by the hot air flow for drying. However, the radiation source 36 and the heater have respective limitations, the radiation source 36 has a small heating effect on the air flow, when the cold air flow blows to the wet hair, the user is likely to feel cold, especially in an environment with a low room temperature, and the heater heats the object itself at the same time when working, if the temperature is too high, the object itself is likely to be damaged during heating (for example, the hair is dry and rough due to rapid water loss at a high temperature), and the combination of the radiation source 36 and the heater 43 can take both advantages of the two into consideration, and simultaneously solve the disadvantages of the other side: the heater heats the air flow, so that a user can not feel cold, the heat radiation and the hot air flow act on an object at the same time, the heating effect on the air flow can be reduced on the premise of the same drying effect, and the problem that the object (such as hair) is damaged by overhigh temperature is solved.

In addition, since the required heating power is reduced, the power consumption of the radiation source can be reduced, so that the self-heating of the drying apparatus 100 is reduced and the safety is increased. Moreover, when the radiation source 36 works, it needs to have its own proper radiation temperature (according to planck's blackbody radiation law, the higher the temperature of the light emitting element 40 of the radiation source 36 is, the shorter the wavelength is, and whether the temperature is too low or too high, it will not emit radiation of a preset waveband), and in a case of low room temperature, for example, the radiation temperature of the radiation source 36 may be too low, which will increase extra power consumption to maintain the radiation temperature of the radiation source 36, thereby causing energy waste, and the hot air heated by the heater 43 can play a role of heating the radiation source 35 when flowing through the radiation source 36, and can be heated quickly when the radiation source 36 is in a state of too low temperature, thereby working at a proper radiation temperature.

The radiation source 36 may include a reflector cup 38 and a luminescent element 40, the luminescent element 40 being positioned within the reflector cup 38, the luminescent element 40 being operable to emit radiation having an infrared wavelength band. Therefore, the object can be dried by utilizing the infrared ray of the infrared wave band emitted by the luminous piece 40 in a heat radiation mode, medium heat conduction is not needed, moisture on the object is directly heated, and the drying effect is good.

Specifically, the band of infrared rays may include a far infrared band, a near infrared band, and the like. In one example, the infrared band emitted by the light emitting member 40 may cover an infrared spectrum of 0.7 μm or more. In one example, the infrared band emitted from the light emitting member 40 is in a range of 0.7 μm to 20 μm. In another example, the light emitting member 40 emits infrared light in a band substantially covering a visible spectrum from 0.4 μm to 0.7 μm and an infrared spectrum above 0.7 μm.

In one embodiment, the light emitting member 40 includes at least one of a halogen lamp, a ceramic, a graphene, and a light emitting diode.

Specifically, examples of the ceramic may include a Positive Temperature Coefficient (PTC) heater and a cermet heater (MCH). The ceramic light emitting element 40 comprises a metallic heating element embedded in a ceramic, for example tungsten embedded in silicon nitride or silicon carbide. The glowing member 40 can be provided in the form of a wire (e.g., a filament), which can be patterned (e.g., formed as a spiral filament) to increase its length and/or surface. The glowing member 40 may also be provided in the form of a rod, and in one example, the glowing member 40 may be a silicon nitride rod, a silicon carbide rod, or a carbon fiber rod having a predetermined diameter and length.

The light emitting member 40 may be selected from one of a halogen lamp, a ceramic, graphene, and a light emitting diode, or the light emitting member 40 may be selected from a combination of two or more of a halogen lamp, a ceramic, graphene, and a light emitting diode. And is not particularly limited herein.

The power density of the radiation emitted from the luminescent member 40 may be adjusted in different operation modes of the drying apparatus 100 (e.g. fast drying mode, hair health mode, etc.), for example by varying the voltage and/or current supplied to the drying apparatus 100. The power of the heater may be adjusted so that the amount of heat generated by the heater is adjusted.

The reflector cup 38 alters the path of the radiation by way of reflection and may be configured to adjust the direction of the radiation emitted by the glowing member 40. For example, the reflector cup 38 may be configured to reduce the divergence angle of the radiation beam, enabling the radiation emitted by the light emitting element 40 to converge in a predetermined manner.

The reflective surface of the reflector cup 38 may be coated with a coating material having a high reflectivity for the wavelength or wavelength range of the radiation emitted by the luminescent member 40. For example, the coating material may have high reflectivity for wavelengths in both the visible and infrared spectrum. Materials with high reflectivity can have high efficiency in reflecting radiant energy. Examples of the coating material may include a metal material and a dielectric material. The metal material may include, for example, silver and aluminum. The dielectric coating may have alternating layers of dielectric material, such as magnesium fluoride. The reflective surface provided with the coating may have a reflectivity of at least 90% (e.g. 90% of incident radiation is reflected by the reflective surface of the reflector cup 38), 90.5%, 91%, 91.5%, 92%, 92.5%, 93%, 93.5%, 94%, 94.5%, 95%, 95.5%, 96%, 96.5%, 97%, 97.5%, 98%, 98.5%, 99%, 99.5%, 99.6%, 99.7%, 99.8%, 99.9% or more. In some examples, the reflective surface provided with the coating may have a reflectivity of substantially 100%, which means that substantially all radiation emitted by the luminescent member 40 may be reflected towards the outside of the drying apparatus 100. Thus, the temperature at the reflective surface of the reflector cup 38 is not substantially increased by the radiation emitted by the luminescent member 40.

In one embodiment, the reflective surface of the reflector cup 38 has an axial cross-section in the shape of a polynomial curve. In this way, the reflective surface can be formed with a focal point to facilitate directing infrared radiation and reducing the divergence angle of the reflected radiation beam.

Specifically, the polynomial curve may have a shape including a parabola, an ellipse, a hyperbola, and the like. In one example, the reflective surface of the reflector cup 38 has a parabolic shape in axial cross-section.

In one embodiment, the light emitter 40 is disposed at a focus of the reflective surface of the reflector cup 38. In this way, the radiation emitted by the luminescent member 40 is reflected by the reflecting surface and then emitted from the opening of the reflector cup 38 in a substantially parallel manner, so that the directivity of the infrared radiation emitted by the drying apparatus 100 is good.

In other embodiments, the glowing member 40 can also be positioned off the focus of the parabola such that the reflected infrared radiation beam can converge or diverge at a distance in front of the drying apparatus 100. The position of the light emitter 40 within the reflector cup 38 may also be adjustable, and the degree of convergence and/or direction of the output radiation beam may be varied by varying the relative positions of the light emitter 40 and the reflector cup 38. The shape of the reflector cup 38 and the shape of the glowing member 40 may be optimized and varied with respect to each other to output a desired heating power at a desired location of the drying apparatus 100.

In addition, a heat insulating material (e.g., glass fiber, mineral wool, cellulose, polyurethane foam, or polystyrene) may be inserted at the junction of the light emitting member 40 and the reflective cup 38 such that the light emitting member 40 is thermally insulated from the reflective cup 38. The insulating material can keep the temperature of the reflector cup 38 from increasing, or not increasing too much, even if the temperature of the luminescent member 40 is high.

In one embodiment, referring to fig. 16-17, the radiation source 36 includes an optical element 42, and the optical element 42 is disposed at the opening of the reflector cup 38 for filtering or reflecting non-infrared radiation. In this way, only infrared radiation can be directed to the object being dried.

In particular, optical element 42 may include a lens, reflector, prism, grating, beam splitter, filter, or a combination thereof that alters or redirects light. In some embodiments, the optical element 42 may be a lens. In some embodiments, the optical element 42 may be a Fresnel lens. Alternatively, a thermal insulating material may be interposed between the optical element 42 and the reflector cup 38 to thermally insulate the optical element 42 from the reflector cup 38.

The optical element 42 may form part of the front face or all of the front face of the drying apparatus 100, thereby protecting the internal radiation source 36 and associated structures from foreign objects by the optical element 42 while transmitting radiation, and also avoiding the problem of a user accidentally touching the optical element 42 or the reflector cup 38 during use. The front face may be the left face of the body 16 shown in fig. 16.

The optical element 42 may be made of a material having a high infrared transmittance. Examples of materials for optical element 42 may include oxides (e.g., silicon dioxide), metal fluorides (e.g., barium fluoride), metal sulfides or metal selenides (e.g., zinc sulfide, zinc selenide), and crystals (e.g., crystalline silicon, crystalline germanium). Alternatively, either or both sides of the optical element 42 may be coated with a material that absorbs or reflects in the visible and ultraviolet spectrum so that only wavelengths in the infrared range may pass through the optical element 42. The optical element 42 may filter out (e.g., absorb or reflect) radiation that is not in the infrared spectrum. The infrared transmittance of optical element 42 can be at least 95% (e.g., 95% of the radiation is transmitted through optical element 42), 95.5%, 96.0%, 96.5%, 97.0%, 97.5%, 98.0%, 98.5%, 99%, 99.1%, 99.2%, 99.3%, 99.4%, 99.5%, 99.6%, 99.7%, 99.8%, 99.9%, or higher. In one example, the infrared transmittance of the optical element 42 may be 99%.

In one example, the luminescent member 40 may emit radiation having a wavelength of 0.4 μm to 20 μm, the reflective cup 38 may reflect all of the radiation toward the optical element 42 (e.g., no radiation is absorbed at the reflective surface), and the optical element 42 may filter out any visible spectrum wavelengths between 0.4 μm and 0.7 μm from the reflected radiation, such that only radiation in the infrared spectrum exits the radiation source 36.

In one embodiment, the optical element 42 is sealed at the opening of the reflector cup 38. In this manner, a relatively sealed interior space may be formed within the reflector cup 38.

Specifically, the inner space of the reflector cup 38 may be configured to have a certain degree of vacuum. The pressure inside the reflector cup 38 may be less than 0.9 standard atmosphere (atm), 0.8atm, 0.7atm, 0.6atm, 0.5atm, 0.4atm, 0.3atm, 0.2atm, 0.1atm, 0.05atm, 0.01atm, 0.001atm, 0.0001atm or less. In one embodiment, a near vacuum condition is present within the reflector cup 38, for example the pressure within the interior of the reflector cup 38 may be about 0.001atm or less. The vacuum may inhibit evaporation and/or oxidation of the glowing member 40 and extend the life of the radiation source 36. The vacuum may also prevent thermal convection or conduction between the glowing member 40 and the optical element 42 and/or the reflector cup 38.

In one embodiment, the reflector cup 38 is filled with a shielding gas, which may be a quantity of a non-oxidizing gas (e.g., an inert gas), while still maintaining a level of vacuum to reduce the increase in temperature of the gas inside the space formed by the reflector cup 38 and the inner surface of the optical element 42. This temperature rise, although small, is caused by thermal convection and conduction. Examples of the non-oxidizing gas may include nitrogen (N)₂) Helium (He), argon (Ar), neon (Ne), krypton (Kr), xenon (Xe), radon (Rn), and nitrogen (N)₂). The presence of the inert gas may further protect the material of the luminescent member 40 from oxidation and evaporation.

In one embodiment, the plurality of radiation sources 36 share one optical element 42, that is, one optical element 42 is provided at the opening of the reflector cups 38 of all the radiation sources 36. In the case where a plurality of radiation sources 36 are connected, one optical element 42 may be provided in a shape corresponding to the plurality of radiation sources 36. As shown in fig. 17, the plurality of radiation sources 36 are arranged in a ring shape, and a complete and ring-shaped optical element 42 is arranged to cover the plurality of radiation sources 36, so that the plurality of radiation sources are hidden inside the drying apparatus 100, and the drying apparatus 100 has a better consistency in appearance.

In one embodiment, one optical element 42 is provided for each radiation source 36, i.e., a plurality of radiation sources 36 corresponds to a plurality of optical elements 42, one optical element 42 being provided at the opening of one reflector cup 38, as shown in FIG. 16. In other embodiments, it is also possible that one optical element 42 may be disposed at the opening of the reflector cups 38 of several radiation sources 36, and one optical element 42 may be disposed at the opening of the reflector cup 38 of one radiation source 36.

In one embodiment, the optical element 42 may be spaced from an inner wall of the body 16, with the airflow outlet 24 being formed between the optical element 42 and the inner wall of the body 16. Alternatively, the optical element 42 is connected to the main body 16, and the optical element 42 is formed with a through hole or a notch communicated to the air duct 20 to form the air outlet 24.

In one embodiment, the heater 43 is located within the body 16.

In one embodiment, the heater 43 is located within the handle 18.

In one embodiment, the motor 14 is located within the body 16.

In one embodiment, the motor 14 is located within the handle 18.

The above embodiments may be combined. In particular, wherein the radiation source 36 and the airflow outlet 24 of the air duct 20 are disposed at the main body 16 (which may be disposed at a front end of the main body 16, such as the left end shown in fig. 1 and 2). The airflow inlet of the air chute 20 may be located in the main body 16 and/or the handle 18. The motor 14 may be located within the body 16 and/or within the handle 18. The heater 43 may be located within the body 16 and/or within the handle 18.

The airflow inlet may include an airflow inlet of the body 16 and an airflow inlet of the handle 18. The heater 43 may include two heaters 43, one heater 43 being located in the body 16 and the other heater 43 being located in the handle 18, and specific embodiments may be found in the following table and fig. 3-13.

In one embodiment, referring to fig. 1 and 2, the drying apparatus 100 includes a plurality of radiation sources 36, a heater 43, and a spacer 54, the plurality of radiation sources 36 being disposed within the housing 12. The heater 43 is disposed within the tunnel 20 with at least a portion of the spacer 54 positioned between the plurality of radiation sources 36 and the heater 43.

Above-mentioned drying equipment 100 through setting up a plurality of radiation sources 36 and heater 43 for the object that needs the drying can realize the high temperature in the short time, satisfies the demand of stereotyping, can not last the toasting of high temperature air current to the target object moreover, can promote user experience. In addition, at least a portion of the spacer 54 is located between the radiation source 36 and the heater 43 to prevent the radiation source 36 from being excessively affected by the flow of air heated by the heater 43, thereby ensuring that the radiation source 36 operates in a proper temperature range.

Specifically, at least a portion of the heater 43 may be located upstream of the motor 14 in the flow direction of the airflow, and the airflow enters the air duct 20, is heated by at least a portion of the heater 43, then flows through the motor 14, and then flows toward the radiation source 36. Since the gas stream is heated by the heater 43 before flowing through the radiation source 36 (of course, there is also a possibility that the motor 14 will be heated when the gas stream flows through the motor 14), there is a possibility that the heated gas stream will adversely affect the operating temperature of the radiation source 36 when flowing through the radiation source 36, and at least a portion of the radiation source 36 can be kept from being blown straight by the heated gas stream by at least a portion of the partition 54, thereby reducing the adverse effect of the heated gas stream on the temperature of the radiation source 36. At least part of the heaters 43 may be located upstream of the motor 14, in case of a plurality of heaters 43, at least one heater 43 is located entirely upstream of the motor 14, or at least a part of at least one heater 43 is located upstream of the motor 14, for example it may be that one or several heaters 43 are located entirely upstream of the motor 14, one or several heaters 43 circumferentially surrounding the motor 14; or one or several heaters 43 are located entirely upstream of the motor 14, one or several heaters 43 circumferentially surround the motor 14, one or several heaters 43 may be located downstream of the motor 14; or some combination of a portion of one heater 43 upstream of the motor 14 and a portion of the heater 43 circumferentially surrounding the motor 14, etc.

In the case where only one heater 43 is provided, it may be possible that a part of the heater 43 is located upstream of the motor 14 and another part circumferentially surrounds the motor 14; or the entire heater 43 may be located upstream of the motor 14.

The radiation source 36 may comprise a reflector cup 38, and at least part of the partition 54 may be located upstream of the reflector cup 38 in the flow direction of the gas flow so that at least part of the reflector cup 38 may be shielded by the at least part of the partition 54, and the shielded at least part of the reflector cup 38 may not be directly blown by the heated gas flow, thereby ensuring that the radiation source 36 operates in a suitable temperature range.

In one embodiment, at least a portion of the radiation source 36 is located downstream of the motor 14 in the direction of flow of the gas stream. Specifically, the positioning of at least a portion of the radiation source 36 downstream of the motor 14 may enable the motor 14 to unobscured at least a portion of the radiation source 36, facilitating the exit of the energy radiated by the radiation source 36.

Referring to fig. 1-7, the radiation source 36 is located within the body 16 and the motor 14 is located within the body 16. At least part of the radiation source 36 is located downstream of the motor 14 in the flow direction of the gas flow.

The number of radiation sources 36 is plural, one or several radiation sources 36 may be located entirely downstream of the motor 14 and one or several radiation sources 36 may circumferentially surround the motor 14 and one or several radiation sources 36 may be located upstream of the motor 14, a portion of one radiation source 36 may be located downstream of the motor 14 and another portion of the radiation source 36 may circumferentially surround the motor 14, and so on.

In one embodiment, referring to FIG. 14, the plurality of radiation sources 36 are positioned outside the air chute 20 and the plurality of radiation sources 36 are positioned to one side of the airflow outlet 24.

Specifically, the radiation source 36 may be positioned between the air chute 20 and the housing 12. In this manner, the radiation source 36 may fixedly couple the air chute 20 to the housing 12. The air chute 20 may be defined by walls of the air chute 20 and the radiation source 36 may be fixedly attached to the outer surfaces of the walls of the air chute 20 and the inner walls of the body 16. The radiation sources 36 may be positioned with an orientation of radiation energy such that a spot is formed at a distance from the gas flow outlet 24, and the spots formed by the plurality of radiation sources 36 may be overlapping spots and non-overlapping spots, or all spots may substantially overlap, or all spots may substantially not overlap.

A plurality of radiation sources 36 are located to one side of the gas flow outlet 24. Specifically, referring to fig. 14, the plurality of radiation sources 36 may be located to the left of the airflow outlet 24. It is understood that in other embodiments, the plurality of radiation sources 36 may be located on the right side, or upper side, or lower side, or upper left side, or lower left side, or upper right side, or lower right side of the gas flow outlet 24.

In one embodiment, referring to fig. 15, the plurality of radiation sources 36 are located outside the air duct 20, and the plurality of radiation sources 36 are connected in a ring shape and circumferentially surround the airflow outlet 24.

Specifically, a plurality of radiation sources 36 are disposed along the periphery of the gas flow outlet 24. A plurality of radiation sources 36 may be disposed about and along the outer wall periphery of the air chute 20 where the airflow outlet 24 is located.

The gas stream may exit the drying apparatus 100 from an annular space formed by the plurality of radiation sources 36, and the plurality of radiation sources 36 may be oriented such that the spot formed by each radiation source 36 or all of the radiation sources 36 may be projected in a desired direction.

In one embodiment, the heater 43 is positioned between the plurality of radiation sources 36 and the motor 14 in the direction of flow of the gas stream.

Specifically, when the motor 14 is activated, air may be introduced through the airflow inlet, and the generated airflow may first flow through the motor 14 for acceleration and rectification, and then flow to the heater 43 for heating, and the heated airflow may flow to the airflow outlet 24 and may flow through at least a portion of the radiation source 36.

In one embodiment, the heater 43 is positioned substantially midway between the plurality of radiation sources 36 and the motor 14, and the heater 43 is spaced apart from the plurality of radiation sources 36 and the motor 14, respectively.

Specifically, the heater 43 is positioned substantially midway between the plurality of radiation sources 36 and the motor 14 such that the distance between the motor 14 and the radiation sources 36 is substantially the same as the distance between the motor 14 and the heater 43. Thus, the two heat sources have less influence on the motor 14.

In one embodiment, the radiation source 36 is located within the air chute 20. Specifically, the radiation source 36 is located in the air duct 20, and the air flow passing through the air duct 20 can also properly dissipate heat from the radiation source 36, which is also equivalent to the possibility that the air flow passing through may be heated by the radiation source 36.

The heater 43 is spaced apart from the plurality of radiation sources 36 and the motor 14, respectively, and the heater 43 is spaced apart from the motor 14, thereby reducing adverse effects of heat generated by the heater 43 on the motor 14 and the radiation sources 36.

The heater 43 and the radiation source 36 are arranged at intervals, so that the heater 43 is prevented from contacting the radiation source 36, and the infrared radiation efficiency of the luminescent element 40 is prevented from being reduced due to the fact that the temperature rise of the heater 43 is directly transmitted to the luminescent element 40 of the radiation source 36 (according to the Planck blackbody radiation law, the higher the temperature of the luminescent element 40 is, the shorter the wavelength is, the infrared band is the interval with the longest wavelength in a broad spectrum, the shorter the wavelength is caused after the temperature rise, the less the portion of the band except the wavelength 780nm is, and the higher the ratio of visible light such as the wavelength 400-780 nm is).

In one embodiment, referring to FIG. 1, the radiation source 36 includes a reflector 40, the spacer 54 includes a reflector cup 38, the reflector cup 38 is mounted to the housing 12, the reflector cup 38 has an opening facing away from the motor 14, the reflector 40 is mounted within the reflector cup 38, the reflector 40 is configured to emit radiation having an infrared band, and the reflector cup 38 is configured to direct the infrared radiation to an exterior of the housing 12. In this manner, the glowing member 40 can be isolated from airflow by the reflector cup 38.

Specifically, the radiation source 36 is located downstream of the motor 14 in the flow direction of the gas flow. The air flow passing through the motor 14 is blown toward the reflector cup 38 and is divided by the outer wall of the reflector cup 38. When the airflow blows to the outer wall of the reflective cup 38, certain heat of the reflective cup 38 is taken away, so that certain heat of the luminous element 40 is taken away, the phenomenon that the temperature of the luminous element 40 is too high or too low is avoided, and the luminous element 40 works in a proper temperature range.

The infrared radiation emitted by the light-emitting member 40 may exit the drying device 100 through the opening of the reflective cup 38, and form one or more light spots at a distance outside the drying device 100.

In one embodiment, referring to fig. 16, reflector cup 38 includes:

a first portion located outside the air duct 20;

a second portion connected to the first portion and in heat exchange with the air duct 20.

So, on the one hand, the wind channel 20 can dispel the heat to the second part of reflection of light cup 38, and then dispel the heat to the illuminating part 40, and illuminating part 40 also is unlikely to the operating temperature too high and influence radiation efficiency, and on the other hand, the first part of reflection of light cup 38 is located outside wind channel 20, can let illuminating part 40 during operation keep at suitable operating temperature.

Specifically, the first portion may include a portion of the outer wall of the reflector cup 38, the second portion may include another portion of the outer wall of the reflector cup 38, and a portion of the outer wall of the reflector cup 38 may be located outside the air duct 20 so that the portion is not directly blown by the airflow in the air duct 20. Another portion of the outer wall of the reflector cup 38 may be coupled to the outer wall of the air chute 20 such that another portion of the outer wall of the reflector cup 38 is in thermal communication with the air chute 20.

Specifically, the reflective cup 38 is located outside the air duct 20, and in fig. 16, the second portion may be directly in contact with the outer wall of the air duct 20, specifically, a portion of the outer wall of the reflective cup 38 may form a portion of the outer wall of the air duct 20 to directly contact with another portion of the outer wall of the air duct 20, that is, the portion of the outer wall of the reflective cup 38 serves as both a portion of the outer wall of the reflective cup 38 and a portion of the outer wall of the air duct 20. In addition, a part of the outer wall of the reflective cup 38 may be located outside the outer wall of the air duct 20 and directly contact the outer wall of the air duct 20.

In other embodiments, the second portion may contact the air duct 20 through an additional heat dissipation structure to exchange heat. Specifically, the heat dissipation structure may include a metal (e.g., aluminum, copper, aluminum alloy, copper alloy, etc.), a carbon fiber material, etc., which facilitates heat dissipation. The specific form of the heat dissipation structure is not limited, and may be, for example, one or any combination of heat dissipation fins, heat dissipation plates, heat dissipation duct 20, and heat pipes. The heat dissipation structure may exchange heat between the air duct 20 and the second portion by at least one of heat conduction and heat convection. When the heat dissipation structure comprises a plurality of heat dissipation fins arranged at intervals, an airflow channel is formed between every two adjacent heat dissipation fins, so that airflow can flow through the airflow channel to take away heat, and the heat dissipation efficiency is improved.

The first portion may be connected to the outer wall of the air chute 20 by a second portion. That is, another portion of the outer wall of the reflector cup 38 is connected to the outer wall of the air duct 20 through a portion of the outer wall of the reflector cup 38.

In other embodiments, the second portion may comprise a portion of the base of the reflector cup 38 that is in direct contact with the outer wall of the air chute 20. It will be appreciated that in other embodiments, the first portion may comprise the base of the reflector cup 38, or a portion of the base.

Preferably, the surface area of the first portion is greater than the surface area of the second portion. In this manner, proper heat dissipation of the radiation source 36 can be achieved and a proper operating temperature of the radiation source 36 can be maintained.

Specifically, the second portion is in heat exchange with the air duct 20, and the heat exchange manner may include at least one of heat conduction and heat convection. By simply setting the surface area, a substantial portion of the heat from the glowing member 40 is maintained at the operating temperature of the radiation source 36, while additional heat is dissipated through the second portion in heat exchange relationship with the air chute 20.

In one embodiment, the reflector cup 38 may be located within the air duct 20, and the reflector cup 38 may block the airflow such that the light emitting member 40 cannot be directly blown by the airflow.

In one embodiment, referring to fig. 2, each radiation source 36 includes a reflector cup 38 and a luminescent element 40, each reflector cup 38 is mounted within the housing 12, each luminescent element 40 is located within a corresponding reflector cup 38, the luminescent element 40 is configured to emit radiation having an infrared band, the reflector cups 38 are configured to direct radiation outside the housing 12, each reflector cup 38 has an opening facing away from the motor 14, and a spacer 54 is disposed between the plurality of reflector cups 38 and the heater 43.

In this way, excessive exposure of the radiation source 36 to the air flow heated by the heater 43 is avoided, ensuring that the radiation source 36 operates at the proper temperature.

Specifically, in one embodiment, the heater 43 may be located upstream of the motor 14 in the flow direction of the airflow, and the airflow, after entering the air duct 20, is heated by the heater 43, accelerated and rectified by the motor 14, and then flows toward the radiation source 36. Since the airflow is heated by the heater 43 before flowing through the radiation source 36 (of course, the airflow is slightly heated by the motor 14 when flowing through the motor 14), when the heated airflow flows through the radiation source 36, the infrared radiation efficiency of the luminous element 40 is reduced because the temperature rise of the heater 43 is directly transmitted to the luminous element 40 of the radiation source 36 (according to planck black body radiation law, the higher the temperature of the luminous element 40 is, the less infrared energy, such as the part except for 780nm, is occupied, and the higher the visible light, such as the wavelength 400-780 nm, is occupied). Through the partition 54, at least part of the reflecting cup 38 is not directly blown by heated air flow, so that the negative influence of the heated air flow on the temperature of the radiation source 36 is reduced, and the infrared radiation efficiency of the luminous element 40 is improved.

In one embodiment, the heater 43 may be located downstream of the motor 14 in the flow direction of the airflow, and the airflow enters the air duct 20, is accelerated and rectified by the motor 14 (of course, the airflow is slightly heated by the motor 14 when flowing through the motor 14), then flows to the heater 43, is heated by the heater 43, and flows to the radiation source 36. The infrared radiation efficiency of the luminous member 40 can be improved by the partition member 54.

The infrared radiation emitted by the luminescent member 40 may exit the drying apparatus 100 via the opening of the reflective cup 38 to form one or more light spots at a distance outside the drying apparatus 100.

In one embodiment, the airflow flows within a channel formed by the inner wall of the air chute 20 and the outer wall of the partition 54. Specifically, a passage may be formed between the inner wall of the air chute 20 and the outer wall of the partition 54 through which the air flow may flow and eventually exit the drying apparatus 100 from the air flow outlet 24.

In one embodiment, at least a portion of the partition 54 is configured as a flow director, which is positioned within the air chute 20 and is used to direct at least a portion of the air flow away from the radiation source 36.

Specifically, the outer wall of the partition 54 may serve as a flow director that directs the flow of gas away from the radiation source 36.

In one embodiment, the plurality of radiation sources 36 are disposed about the airflow outlet 24, one end of the spacer 54 is connected to the housing 12, the other end of the spacer 54 extends inwardly and away from the radiation sources 36 in a direction toward the airflow outlet 24, an avoidance cavity is formed between the spacer 54 and the housing 12, and at least a portion of the plurality of radiation sources 36 is received within the avoidance cavity.

Specifically, the radiation source 36 includes a reflective cup 38 and a luminescent element 40, the luminescent element 40 is located in the reflective cup 38, and at least a portion of the reflective cup 38 of each radiation source 36 is located in the avoiding cavity, so that the portion of the reflective cup 38 located in the avoiding cavity is not directly blown by the airflow, and the radiation source 36 operates in a suitable temperature range.

In one embodiment, spacer 54 is positioned within body 16, spacer 54 includes a circumferentially outer end and a circumferentially inner end, the circumferentially outer end of spacer 54 is connected to body 16, the circumferentially inner end of spacer 54 extends inwardly and away from radiation source 36 in a direction toward gas flow outlet 24 to allow gas flow along the outer wall of spacer 54 from the direction of the inner wall of body 16 to the direction of the middle of body 16, and spacer 54 forms a constricted shape of gas path 20 within body 16 to increase the flow rate of the gas flow.

In one embodiment, the surface of the separator 54 facing the heater 43 is formed in a streamlined shape.

Specifically, the surface of the separator 54 facing the heater 43 is formed in a streamline shape, which can reduce airflow resistance and thus airflow noise. The streamline may be in the shape of a polynomial curve. Specifically, the polynomial curve may have a shape including a circle, a parabola, an ellipse, a hyperbola, and the like.

The surface of the separator 54 facing the heater 43 may be an outer wall surface of the separator 54. The flow of gas from the heater 43 to the outer wall surface of the partition 54 can be directed from the outer wall surface of the partition 54 to the middle of the body 16, thereby avoiding at least part of the radiation source 36.

In one embodiment, the insulation 54 is thermal insulation. Specifically, the thermal insulation may insulate the temperature of the heated airflow to avoid the heated airflow from causing an anomaly in the radiation efficiency of the radiation source 36. When the heated airflow flows through the radiation source 36, the temperature rise of the heater 43 is directly transmitted to the luminescent member 40 of the radiation source 36, so that the infrared radiation efficiency of the luminescent member 40 is reduced (according to planck blackbody radiation law, the higher the temperature of the luminescent member 40 is, the less the infrared energy, such as the part with the wavelength of 780nm, is, and the higher the visible light, such as the wavelength of 400-780 nm, is). Through the partition 54, at least part of the reflecting cup 38 is not directly blown by heated air flow, so that the negative influence of the heated air flow on the temperature of the radiation source 36 is reduced, and the infrared radiation efficiency of the luminous element 40 is improved.

In one embodiment, the heater 43 is configured as a ring, and the radial dimension of the heater 43 is slightly larger than the radial dimension of the motor 14.

Specifically, the motor 14 may be located downstream of at least a portion of the heater 43 in the direction of flow of the airflow. The radial dimension of the annular heater 43 is slightly larger than that of the motor 14, so that the end part of the motor 14 is accommodated in the accommodating space surrounded by the heater 43, and the heating and rectifying effects on air can be improved.

In one embodiment, the heater 43 may be mounted within the drying apparatus 100 by the bracket 66 and the mounting seat 74. Specifically, the heater 43 is supported by the bracket 66, and the heater 43 is mounted in a mounting seat 74, and the shape of the mounting seat 74 is adapted to the shape of the air duct 20 of the drying apparatus 100.

The supporter 66 may support the heater 43 to reduce the amount of deformation of the heater 43 occurring when the temperature thereof rises.

In one embodiment, the heater 43 may be disposed within the air chute 20, for example, the heater 43 may be disposed within the air chute 20 within the main body 16, or the heater 43 may be disposed within the air chute 20 within the handle 18, or the heater 43 may be disposed within the main body 16 and the air chute 20 of the handle 18.

In the case where the heater 43 is provided in the main body 16, the heater 43 is supported in the main body 16 by the bracket 66, and the shape of the bracket 66 is adapted to the shape of the housing 12 and the shape of the heater 43, respectively, it is understood that the shape of the portion of the bracket 66 connected to the main body 16 is adapted to the shape of the main body 16, and the shape of the portion of the bracket 66 connected to the heater 43 is adapted to the shape of the heater 43, for example, the inner wall of the main body 16 is cylindrical, and the portion of the bracket 66 connected to the main body 16 is circular or a part of a circle in the circumferential direction. The heater 43 has a cylindrical shape, and a portion of the bracket 66 connected to the heater 43 has a circular shape or a portion of a circular shape in a circumferential direction, so that the bracket 66 can be more closely connected to the body 16 and the heater 43.

The bracket 66 is made of high temperature resistant material, and the bracket 66 can bear the heat influence of the heater 43 during working, reduce the deformation of the bracket 66 and avoid the negative influence on the heating of the airflow. The high temperature resistant material can withstand the heat generated by the heater 43 during operation, and may be a plastic part, a metal part, a ceramic part, or the like.

The mount 74 may be connected to at least one of the motor 14, the heater 43, and the housing 12. Specifically, the mounting seat 74 may mount the heater 43 in the housing 12, the mounting seat 74 is mounted in the air duct 20, and the shape of the mounting seat 74 is adapted to the shape of the air duct 20, it is understood that the shape of the portion of the mounting seat 74 connected to the air duct 20 is adapted to the shape of the air duct 20, for example, the inner wall of the air duct 20 is cylindrical, and the portion of the mounting seat 74 connected to the air duct 20 is circular in the circumferential direction, or is a part of the circular shape, so that the mounting seat 74 can be connected to the inner wall of the air duct 20 more tightly.

The mounting seat 74 is connected to at least one of the motor 14, the heater 43, and the housing 12, the mounting seat 74 may be connected to the motor 14, the mounting seat 74 may be connected to the heater 43, the mounting seat 74 may be connected to the housing 12, the mounting seat 74 may be connected to the motor 14 and the heater 43, the mounting seat 74 may be connected to the motor 14 and the housing 12, the mounting seat 74 may be connected to the heater 43 and the housing 12, or the mounting seat 74 may be connected to the motor 14, the heater 43, and the housing 12.

In one embodiment, referring to fig. 21, the mounting block 74 has a mounting space 76, and the bracket 66 and the heater 43 are mounted to the mounting space 76. Specifically, the bracket 66 and the heater 43 are mounted in the mounting space 76, so that the mounting seat 74, the bracket 66 and the heater 43 form a compact overall structure, and the mounting seat 74 can protect the heater 43 and the bracket 66.

In one embodiment, the heater 43 includes a plurality of heating segments 47 coupled together, with the plurality of heating segments 47 being distributed circumferentially about the heater 43.

Specifically, the heater 43 may be an electric heater 43. The heating sections 47 are distributed in the circumferential direction of the heater 43, so that the heating sections 47 heat the air in the circumferential direction. The at least one heating section 47 may be located upstream of the motor 14 in the flow direction of the airflow, such that the airflow heated by the heating section 47 may flow towards the motor 14. At least one heating section 47 is located upstream of the motor 14, one or several heating sections 47 are located upstream of the motor 14 and other heating sections 47 may circumferentially surround the motor 14, one or several heating sections 47 are located upstream of the motor 14 and other heating sections 47 are located downstream of the motor 14, one or several heating sections 47 are located upstream of the motor 14 and one or several heating sections 47 are located downstream of the motor 14 and one or several heating sections 47 are circumferentially surround the motor 14, and all heating sections 47 are located upstream of the motor 14.

Each heating section 47 may be individually switched, or all heating sections 47 may be switched as a whole.

The power of each heating section 47 may also be controlled individually or the power of all heating sections 47 may be controlled as a whole for all heating sections 47.

In one embodiment, referring to fig. 23 and 24, the heater 43 includes heating wires 56, and the heating wires 56 include a plurality of layers spaced apart in the direction of the airflow.

In particular, the multilayer heating wire 56 may provide multiple levels of heating of the airflow such that the airflow can be heated to a desired temperature.

In one embodiment, the heating wire 56 is configured in a loop and includes a plurality of connected sets of heat generating portions 58, the heat generating portions 58 including a first portion 60, a second portion 62, and a third portion 64, wherein,

the first portion 60 extends in a radial direction,

one end of the second portion 62 is connected to the radially outer end of the first portion 60, the other end of the second portion 62 extends circumferentially away from the first portion 60,

one end of the third portion 64 is connected to the radially inner end of the first portion 60, and the other end of the third portion 64 extends circumferentially away from the first portion 60 and away from the second portion 62.

In particular, at least one layer of heating wire 56 may be configured in a loop shape, it is possible that one or several layers of heating wire 56 are configured in a loop shape and the other layers are configured in other shapes (e.g., linear, curved, etc.), it is possible that all layers of heating wire 56 are configured in a loop shape.

Each layer of heating wire 56 may include a plurality of heating segments 47, with the plurality of heating segments 47 being connected end-to-end to form a layer of annular heating wire 56.

Referring to fig. 24, in the two connected sets of heat generating portions 58, the other end of the second portion 62 of one set of heat generating portions 58 may be connected to the other end of the second portion 62 of the other set of heat generating portions 58. Of the two connected sets of heat generating portions 58, the other end of the third portion 64 of one set of heat generating portions 58 may be connected to the other end of the third portion 64 of the other set of heat generating portions 58, thereby connecting all of the heat generating portions 58.

In one embodiment, the support 66 is radiused and the heater 43 is mounted to the support 66. In particular, the radiused shelf 66 provides sufficient strength support for the heater 43.

Specifically, the shelf 66 may include a plurality of lobes 70, the plurality of lobes 70 being connected at a mid-portion of the mounting space 76 and extending radially from the mid-portion to form a radial shelf 66.

In one embodiment, the bracket 66 is provided with a fitting groove 58, and the heater 43 is mounted in the fitting groove 58.

Specifically, the heater 43 may include the heating wire 56, and the mounting groove 68 may limit the mounting of the heating wire 56 by providing the mounting groove 68 on the bracket 66, so that the heating wire 56 may be conveniently mounted in the mounting groove 68, and the heating wire 56 may not be easily deformed and displaced during operation.

The fitting groove 68 is provided such that the holder 66 is radially beyond the outer surface of the heater 43, so that the heater 43 is wound around the holder 66 without the heater 43 having a structure protruding outward.

In one embodiment, one axial end of the holder 66 extends beyond the corresponding axial end of the heater 43, and the one axial end of the holder 66 extending beyond the heater 43 extends beyond the heater 43 in the radial direction to form a fitting groove 68 on the holder 66.

Specifically, the fitting groove 68 is ring-shaped, and the axial section of the fitting groove 68 is substantially U-shaped. In fig. 22, one axial end 69 of the holder 66 extends beyond a corresponding axial end 71 of the heater 43, the heater 43 extends radially to the axis a, and the axial end 69 of the holder 66 extends radially to the axis B, which exceeds the axis a, such that the heater 43 is retained both axially and radially by the mounting groove 68.

In one embodiment, both ends of the holder 66 extend beyond the axial end portions of the heater 43, respectively, in the axial direction of the holder 66, and both axial ends of the holder 66 extend beyond the heater 43 in the radial direction to form a fitting groove 68 in the axial middle of the holder 66.

In one embodiment, the bracket 66 includes a plurality of branches 70, the plurality of branches 70 being connected at a middle portion of the heater 43, each branch 70 extending radially outward from the middle portion, each branch 70 having a predetermined length in an axial direction of the heater 43, the predetermined length being greater than an axial length of the heater 43.

Specifically, the rami 70 may have a radial length of the cross-section of the stent 66, i.e., a plurality of rami 70 are interconnected at one end and extend radially outward at the other end.

In other embodiments, the rami 70 may also have a diametrical length of the cross-section of the stent 66, i.e., a plurality of rami 70 are interconnected at their midpoints and extend radially at their ends.

Each of the branch blades 70 has a preset length in the axial direction of the heater 43, the preset length being greater than the axial length of the heater 43. Specifically, since the predetermined length of the branch blade 70 is greater than the axial length of the heater 43, the branch blade 70 has a protruding portion in the axial direction with respect to the heater 43, and the protruding portion can be used to separate the heater 43 from other components in the housing 12, thereby reducing the adverse effect of the heat of the heater 43 on other components of the drying apparatus 100.

In one embodiment, the heater 43 comprises a plurality of layers spaced apart in the axial direction, at least one positioning groove 72 is provided on the outer circumferential surface of at least one of the leaves 70, and at least one layer of the heater 43 is positioned in the positioning groove 72.

Specifically, the positioning groove 72 can position the heater 43 positioned in the positioning groove 72, avoiding displacement of the heater 43. In the illustrated embodiment, the positioning groove 72 is formed on the inner bottom surface of the fitting groove 68.

Specifically, the number of the positioning grooves 72 may be one or more (e.g., two or more), and when one positioning groove 72 is provided, one positioning groove 72 may be disposed on the bottom surface of the assembly groove 68 in a ring shape, or may be disposed on the bottom surface of the assembly groove 68 in a spiral shape. When there are a plurality of positioning grooves 72, the positioning grooves 72 may be a plurality of positioning grooves that are disposed in one-to-one correspondence with the plurality of layers of the heater 43, and the positioning grooves 72 may be ring-shaped and spaced apart from each other on the bottom surface of the mounting groove 68.

In one embodiment, referring to fig. 18 to 21, the mounting seat 74 includes a bottom wall 78 and a peripheral wall 80, one axial end of the peripheral wall 80 is connected to the bottom wall 78 to form a mounting space 76 between the peripheral wall 80 and the bottom wall 78, and the bracket 66 and the heater 43 are mounted to the mounting space 76.

Specifically, the peripheral wall 80 is annular along the circumferential direction of the mounting seat 74, one axial end of the peripheral wall 80 is connected to the bottom wall 78, and the other axial end of the peripheral wall 80 is open, so that the airflow heated by the heater 43 in the mounting space 76 can flow to the motor 14. A part of the motor 14 may protrude into the mounting space 76 from an axial open end of the peripheral wall 80, and the motor 14 may be located outside the mounting space 76. The bottom wall 78 may be closed, i.e. the bottom wall 78 is not provided with a through hole, and the bottom wall 78 may also be provided with a through hole communicating with the mounting space 76, through which the wire harness may pass.

In one embodiment, the peripheral wall 80 is provided with vent holes 82, and the air flow enters the heater 43 through the vent holes 82.

Specifically, the airflow may enter the mounting space 76 from the ventilation holes 82 circumferentially distributed in the mounting seat 74, and be heated by the heater 43, and the heated airflow may flow toward the motor 14 through the open end of the peripheral wall 80, and be accelerated and rectified by the motor 14.

The heater 43 is located in the main body 16, and the bottom wall 78 may be adjacent to a right-end inner wall of the main body 16, and further, an outer side of the bottom wall 78 is fitted to the right-end inner wall of the main body 16. The outer side of the bottom wall 78 is adapted to the inner wall of the right end of the main body 16, and it is understood that the outer side of the bottom wall 78 connected to the inner wall of the right end of the main body 16 is adapted to the inner wall of the right end of the main body 16, for example, the inner wall of the right end of the main body 16 is cylindrical, and the outer side of the bottom wall 78 connected to the inner wall of the right end of the main body 16 is circular or a part of a circle in the circumferential direction, so that the mounting seat 74 can be connected to the main body 16 more tightly.

The peripheral wall 80 is provided with a vent 82, so that the airflow is radially transferred from the outer side of the peripheral wall 80 to the installation space 76 in the peripheral wall 80, then is heated by the heater 43 in the installation space 76, and the heated airflow is axially transferred to the direction of the motor 14, namely, the airflow radially enters the heater 43 from the peripheral wall 80, and axially flows to the motor 14 after being heated. Specifically, the peripheral surface air intake and heating mode has higher heat exchange efficiency, the branch blade 70 extending in the radial direction can guide the intake air, and the heated airflow flows through the motor 14 to be rectified. If the heater 43 is placed downstream of the motor 14, the rectified airflow is again disturbed, and it is not possible to provide radially extending fins 70. Therefore, it is more advantageous from the viewpoint of air flow rectification that the heater 43 is disposed upstream of the motor 14 than downstream of the motor 14.

In one embodiment, the housing 12 is provided with an airflow inlet 22, and the airflow inlet 22 is configured in a ring shape that fits into the vent 82. Specifically, the airflow inlet 22 may be disposed at one axial end of the main body 16 (as shown in the right end of the main body 16), and the annular airflow inlet 22 may enable airflow to enter the main body 16 more uniformly, so as to avoid noise caused by air pressure difference generated inside the housing 12 due to non-uniform intake of air, thereby improving user experience.

The peripheral wall 80 is annular along the circumferential direction of the mounting seat 74, the vent holes 82 are distributed on the annular surface of the peripheral wall 80, and the airflow inlets 22 are configured into an annular shape matched with the vent holes 82, so that airflow flowing from the airflow inlets 22 enters the mounting space 76 through the vent holes 82 in the circumferential direction, and the heater 43 can rapidly and uniformly heat the airflow entering the airflow inlets 22.

In one embodiment, the airflow inlet 22 of the air duct 20 is formed at the right end of the main body 16, and the airflow direction in the main body 16 is: the airflow inlet 22 of the right end wall of the main body 16, the vent 82 of the peripheral wall 80 of the mounting block 74, the multi-layered heating wire 56, the motor 14, and the airflow outlet 24.

In one embodiment, the airflow inlet 22 of the air duct 20 is formed in the handle 18 and is formed in a ring shape, and the flow direction of the air entering through the airflow inlet 22 of the handle 18 may be: the airflow inlet 22 of the handle 18, the vent 82 of the peripheral wall 80 of the mounting block 74, the multi-layer heating wire 56, the motor 14, and the airflow outlet 24.

In one embodiment, the mounting seat 74 includes a mounting wall 84, the mounting wall 84 is used for connecting with the housing 12 of the drying apparatus 100, the other axial end of the peripheral wall 80 is connected to the inner side of the mounting wall 84, and the outer peripheral surface of the mounting wall 84 is fitted to the housing 12.

Specifically, the mounting wall 84 and the bottom wall 78 connect both ends of the peripheral wall 80 in the axial direction, respectively, and the mounting wall 84 is connected to the housing 12 so that the mount 74 can be fixed.

The other end in the axial direction of the peripheral wall 80 is connected to the inside of the mounting wall 84, and the outer peripheral surface of the mounting wall 84 is fitted to the housing 12. Specifically, the peripheral wall 80 circumferentially surrounds the heater 43, the other end in the axial direction of the peripheral wall 80 is connected to the inside of the mounting wall 84, and the bottom wall 78 is connected to the inside of one end in the axial direction of the peripheral wall 80, so that the bottom wall 78 and the mounting wall 84 are located inside and outside the one end in the axial direction of the peripheral wall 80, respectively.

The outer peripheral surface of the mounting wall 84 is fitted to the housing 12 so that the mounting wall 84 can be relatively tightly coupled to the housing 12. For example, the inner wall of the body 16 is cylindrical and the outer periphery of the mounting wall 84 is rounded to fit the inner wall of the body 16.

In one embodiment, the peripheral wall 80 is cylindrical or the mounting block 74 is cylindrical, and the vents 82 are evenly distributed across the surface of the cylindrical structure. Specifically, the peripheral wall 80 is cylindrical, or the mount 74 is cylindrical, and the vent holes 82 are uniformly distributed on the surface of the cylindrical structure so that the airflow can uniformly flow into the heater 43 in the circumferential direction, and the airflow is smooth. The air flow into the installation space 76 can be heated by the heater 43, and the resulting heated air flow having a uniform temperature can flow toward the motor 14.

In one embodiment, the heater 43 is cylindrical or circular in cross-section, and the heater 43 is disposed coaxially with the peripheral wall 80. Specifically, the shape of the heater 43 is adapted to the shape of the peripheral wall 80 so that the air flow flowing in from the circumferential direction comes into contact with the heater 43, thereby allowing the air flow to be uniformly heated.

Since the heating wire 56 of the heater 43 is arranged in a cylindrical shape and disposed in the mounting seat 74, the annular air flow planned by the vent holes 82 of the peripheral wall 80 of the mounting seat 74 flows into the inside from the outer peripheral surface of the heating wire 56 in the radial direction, which is equivalent to a large contact surface and high heat exchange efficiency. The radial air intake direction of the outer peripheral surface of the heating wire 56 is substantially perpendicular to the air flow of the air duct 20, and although the arrangement has high heating efficiency, the heater 43 is preferably arranged upstream of the motor 14, or because the heater 43 can be arranged upstream of the motor 14, the problem of air flow disturbance by the heater 43 can be eliminated, and the structure can be optimized only from the viewpoint of increasing the heating efficiency.

Furthermore, the branch blades 70 of the bracket 66 extend along the radial direction of the cylinder and are substantially parallel to the air inlet direction, so that the wind guiding and flow stabilizing functions can be achieved.

In one embodiment, bracket 66 and heater 43 are secured to mount 74 by a mounting cover 86, mounting cover 86 fits into mounting space 76, and mounting cover 86 is removably attached to mount 74.

Specifically, the heater 43 is supported on the bracket 66, the bracket 66 may be fixed to a radially inner side of the mounting cover 86, and the mounting seat 74 may be fixed to a radially outer side of the mounting cover 86.

Wherein the motor 14 may rest against the front side of the mounting base 74 and/or the mounting cover 86. The radial dimension of the annular heater 43 is slightly larger than the diameter of the motor 14, so as to accommodate the end of the motor 14 in the mounting cover 86, improve the air heating and rectifying effect, and simultaneously, the heavier motor 14 can be placed in the middle of the main body 16, thereby reasonably distributing the whole weight and avoiding the problem of inconvenient use caused by unreasonable weight distribution.

The mounting cover 86 is removably coupled to the mounting base 74 to facilitate removal of the mounting cover 86 with the bracket 66 and the heating wire 56 to allow replacement or repair of the damaged bracket 66 or heating wire 56. The removable attachment of the mounting cover 86 to the mounting block 74 includes, but is not limited to, a snap-fit attachment, a screw attachment, and the like.

The mounting cover 86 is adapted to the mounting space 76 of the mounting base 74 such that the bracket 66 and the heating wire 56 on the mounting cover 86 extend into the mounting space 76 and the heating wire 56 is energized to heat the airflow entering the mounting space 76 through the vent 82.

In one embodiment, the mounting cover 86 defines a retention aperture 88, and a portion of the bracket 66 is removably mounted within the retention aperture 88.

Specifically, the bracket 66 includes a plurality of branch leaves 70, the limiting hole 88 on the mounting cover 86 is a plurality of limiting holes adapted to the plurality of branch leaves 7070 of the bracket 66 in a one-to-one correspondence manner, in the illustrated embodiment, an axial protrusion 90 is disposed at one axial end of the mounting cover 86, the axial protrusion 90 is circumferentially disposed in a plurality, each axial protrusion 90 is provided with a limiting hole 88, each branch leaf 70 of the bracket 66 includes a mounting arm 92 circumferentially disposed, the heating wire 56 can surround the circumferential side surface of the mounting arm 92, and the axial end of each mounting arm 92 is detachably mounted in the corresponding limiting hole 88. In this way, the bracket 66 with the heating wire 56 can be conveniently detached from or attached to the mounting cover 86, so that the bracket 66 or the heating wire 56 can be replaced or repaired, thereby reducing the maintenance cost of the drying apparatus 100.

The mounting arm 92 may support the connection point of two adjacent heating segments 47 of one layer of the heating coil 26. The plurality of connection points of the multi-layered heating wire may be axially supported by the mounting arm 92.

In one embodiment, a shock absorbing bumper (not shown) is provided between the motor 14 and the mount 74. Specifically, in the flowing direction of the air flow, the heater 43 may be located upstream of the motor 14, the motor 14 is connected to the mounting seat 74 through a shock absorbing buffer, and the shock absorbing buffer may reduce the transmission of the shock during the operation of the motor 14 to the mounting seat 74, so as to prevent the mounting seat 74 or the components on the mounting seat 74 from being displaced due to the shock, thereby improving the reliability of the drying apparatus 100. The shock absorbing buffers may include foam, springs, rubber, etc.

In other embodiments, the heater 43 is located downstream of the motor 14 in the direction of flow of the airflow, with the motor 14 spaced from the mounting block 74.

In one embodiment, referring to fig. 25-27, the heater assembly 45 further includes a protective structure 94, the protective structure 94 is mounted to the bracket 66, and the protective structure 94 includes at least one of a thermistor 99, a thermostat, and a thermal fuse 97.

Specifically, the heater 43 encloses a receiving space 96, and the protection structure 94 is mounted on the bracket portion located in the receiving space 96. The protection structure 94 can protect electrical components such as the heater 43, and when the heater 43 works abnormally (such as overcurrent and overheat), the protection structure 94 can break a loop to prevent the electrical components of the drying device 100 from being damaged due to abnormal conditions such as overcurrent and overheat. In addition, the protection structure 94 is installed in the accommodating space 96, and the protection structure 94 is easier to position. Moreover, the protective structure 94 is also sensitive because the air flow is not directed to the protective structure 94 until it is heated by the heater 43.

In one embodiment, the protective structure 94 is a plurality, and the plurality of protective structures 94 are mounted to the plurality of leaves 70 of the bracket 66, respectively. In particular, the plurality of protective structures 94 may provide multiple protections, increasing the safety of the drying apparatus 100. And the plurality of protective structures 94 are mounted to the plurality of leaves 70 of the bracket 66, respectively, such that the plurality of protective structures 94 have less interaction with each other.

In one embodiment, protective structure 94 is located in the middle where the plurality of leaflets 70 meet. Specifically, the protection structure 94 located in the middle where the plurality of branch leaves 70 meet may be located on the central axis of the heater 43, the protection structure 94 may include a temperature sensor, the protection structure 94 is installed in the accommodating space 96, when the heater 43 works, the temperature in the accommodating space 96 may rise, the protection structure 94 located in the middle where the plurality of branch leaves 70 meet may more accurately collect the temperature when the heater 43 works, and whether the accuracy of protection is triggered is improved. If the protection is not on the central axis, the protection is greatly influenced by the temperature of the local position, and the situation that the protection is triggered when the whole exceeds the standard and the local exceeds the standard may exist.

Moreover, if the heater 43 is placed downstream of the motor 14, it is not possible to provide the related structure on the center axis of the heater 43 because the provision of the related structure disturbs the airflow. By locating the heater 43 upstream of the motor 14, the airflow is somewhat turbulent as the airflow entering upstream does not pass through the motor 14, so the protective structure 94 in the airflow has little effect on the airflow.

In one embodiment, the protection structure 94 includes a temperature control structure 98, the temperature control structure 98 is configured to maintain a path at a normal temperature and deform to break when the temperature reaches a first temperature threshold, and the temperature control structure 98 is located substantially in the middle within the receiving space 96. Specifically, the temperature control structure 98 may include a mechanical thermostat that operates on the principle of expansion with heat and contraction with cold of an object. The expansion with heat and the contraction with cold are the commonness of the objects, but the different objects have different degrees of expansion with heat and contraction with cold. The mechanical temperature controller is provided with two metal conductors with different thermal expansion coefficients, and the metal conductors are bent to touch a set contact or a switch due to different expansion and contraction degrees at a changing temperature, so that a set circuit (protection) starts to work. In case the temperature of the heater 43 is less than the first temperature threshold, the thermostat may be restored, i.e. the protection mechanism of the thermostat is a reversible, repeatable protection.

The temperature control structure 98 is located in the substantially middle portion of the accommodating space 96, so as to improve the accuracy of whether to trigger protection.

In one embodiment, the drying apparatus 100 includes a controller (not shown) electrically connecting the protection structure 94 and the heater 43, the protection structure 94 being configured to obtain a temperature parameter, and the controller being configured to control the heater 43 according to the temperature parameter. Specifically, the drying apparatus 100 may be preset with a second temperature threshold, the controller compares the temperature parameter acquired by the protection structure 94 with the second temperature threshold, and when the temperature parameter is greater than or equal to the second temperature threshold, the controller may control the heater 43 to be turned off, for example, the controller may control the switch to be turned off to turn off the heater 43. In the case where the temperature parameter is less than the second temperature threshold, the controller may control the heater 43 to operate, for example, by controlling the switch member to be closed to operate the heater 43. The second temperature threshold may be less than the first temperature threshold.

In one embodiment, referring to fig. 26, the protective structure 94 includes a thermistor 99, a thermostat, and a thermal fuse 97. Specifically, the thermistor 99 may be located in the middle of the intersection of the plurality of branches 70, the thermistor 99 may serve as a temperature sensor, and the controller may collect temperature data via the thermistor 99. The thermostat may be located substantially centrally within the receiving space 96.

The thermal fuse 97 may be located at one side in the accommodating space 96. When the temperature of the heater 43 reaches the third temperature threshold, the thermal fuse 97 is blown. The third temperature threshold is greater than the first temperature threshold. The thermal fuse 97 is not recoverable after it is blown. Specifically, the thermal fuse 97 may be a thermal fuse, which is a temperature-sensitive circuit breaker. The thermal fuse 97 can sense overheating generated during abnormal operation of the drying apparatus, thereby cutting off a circuit to prevent a fire, and the thermal fuse 97 cannot be reused after operation and operates only once at a fusing temperature. Thus, the temperature of the heater 43 can be effectively prevented from exceeding the threshold value, and the occurrence of a safety accident can be avoided.

In its embodiment, the protective structure 94 comprises a thermistor 99, or the protective structure 94 comprises a thermostat, or the protective structure 94 comprises a thermal fuse 97, or the protective structure 94 comprises a thermistor 99 and a thermostat, as shown in fig. 27, or the protective structure 94 comprises a thermistor 99 and a thermal fuse 97, or the protective structure 94 comprises a thermostat and a thermal fuse 97.

In the description herein, references to the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. Drying apparatus, characterized in that it comprises:

2. Drying apparatus according to claim 1, wherein at least part of the radiation source is located downstream of the motor in the direction of flow of the gas stream.

3. The drying apparatus of claim 1, wherein a plurality of said radiation sources are located outside said air duct, and a plurality of said radiation sources are located on one side of said air flow outlet; alternatively, the first and second electrodes may be,

the plurality of radiation sources are located outside the air duct and connected in a ring shape to surround the airflow outlet on the circumferential outer side.

4. Drying apparatus according to claim 1, wherein the heater is located between the plurality of radiation sources and the motor in the direction of flow of the gas stream.

5. Drying apparatus according to claim 4, wherein the heater is located substantially centrally between the plurality of radiation sources and the motor, and the heater is spaced from the plurality of radiation sources and the motor respectively.

6. Drying apparatus according to any one of claims 1-5, wherein the radiation source comprises a light emitter, the partition comprises a reflector cup mounted to the housing, the reflector cup having an opening facing away from the motor, the light emitter being mounted within the reflector cup, the light emitter being adapted to emit radiation containing an infrared band, the reflector cup being adapted to direct the infrared radiation to the exterior of the housing.

7. Drying apparatus according to claim 6, wherein the reflector cup comprises:

a first portion located outside of the air duct;

8. The drying apparatus of any one of claims 1-5, wherein each of said radiation sources comprises a reflector cup and a light emitter, each of said reflector cups mounted within said housing, each of said light emitters positioned within a corresponding one of said reflector cups, said light emitter adapted to emit radiation having an infrared band, said reflector cups adapted to direct said radiation outside of said housing, each of said reflector cups having an opening facing away from said motor, wherein said spacer is positioned between a plurality of said reflector cups and said heater.

9. Drying apparatus according to claim 8 in which at least part of the partition is configured as a deflector located within the air duct for directing at least part of the air flow away from the radiation source.

10. The drying apparatus of claim 9, wherein a plurality of said radiation sources are disposed about said gas flow outlet, one end of said spacer is connected to said housing, the other end of said spacer extends inwardly and away from said radiation sources in a direction toward said gas flow outlet, said spacer and said housing defining an avoidance cavity therebetween, at least a portion of said plurality of radiation sources being received within said avoidance cavity.

11. Drying apparatus according to claim 8 in which the surface of the partition facing the heater is streamlined.

12. Drying apparatus according to claim 1 in which the insulation is thermal insulation.

13. Drying apparatus according to claim 1, wherein the heater is configured as a ring and has a radial dimension slightly larger than that of the motor.

14. Drying apparatus according to claim 1, wherein the housing comprises a main body and a handle, the main body being connected to the handle, the heater being located within the main body and/or within the handle, the motor being located within the main body and/or within the handle.