CN216123967U - Drying apparatus - Google Patents

Abstract

The utility model discloses a drying apparatus, which comprises: a housing provided with an opening; the filter assembly comprises a dust cover and a dust screen, wherein the dust screen is positioned in the shell, the dust cover is positioned in the opening and detachably connected with the dust screen, the dust cover enables a part of the opening to form an air inlet, and the air flow entering the air inlet passes through the dust screen and enters the shell. Among the above-mentioned drying equipment, the shield can be dismantled with the dust screen and be connected, when needs clear up the dust screen, can dismantle the shield. And after cleaning, installing the dust cover back. Like this, can clear up the debris of dust screen accumulation, guarantee drying equipment's air inlet efficiency.

Description

Drying apparatus

Technical Field

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

Background

When the blower is in operation, air is sucked in from the air inlet and is blown out from the air outlet. Since the blower has various mechanical and electrical structures inside, if foreign materials such as dust are sucked from the air inlet, the internal structure is easily damaged. In the related art, in order to prevent impurities from entering the inside of the hair dryer, a filter assembly is generally designed at the air inlet, the filter assembly allows air to pass through, and simultaneously blocks particulate matters exceeding a certain radius size to play a role in filtering the air. However, since the filter assembly generally has dense filter holes for blocking the passage of impurities with sizes exceeding the aperture of the filter holes, the impurities accumulated in the filter assembly may block the filter holes in long-term use, which may cause the air permeability of the filter assembly to decrease, thereby affecting the air intake efficiency of the blower.

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:

a housing provided with an opening;

the filter assembly comprises a dust cover and a dust screen, wherein the dust screen is positioned in the shell, the dust cover is positioned in the opening and detachably connected with the dust screen, the dust cover enables a part of the opening to form an air inlet, and the air flow entering the air inlet passes through the dust screen and enters the shell.

Among the above-mentioned drying equipment, the shield can be dismantled with the dust screen and be connected, when needs clear up the dust screen, can dismantle the shield. And after cleaning, installing the dust cover back. Like this, can clear up the debris of dust screen accumulation, guarantee drying equipment's air inlet efficiency.

In some embodiments, the periphery of the dust cap is spaced from the inner wall of the opening to divide the opening into an annular air inlet, and the dust screen has an annular filter portion.

In some embodiments, a fixing portion is disposed in the middle of the dust screen, and the filtering portion is disposed on the outer ring of the dust screen.

In some embodiments, the fixing portion is provided with an elastic limiting member, the filtering portion is provided with a filtering hole, the elastic limiting member abuts against the dust cover, and the fixing portion is provided with a first mounting member which axially limits the dust cover.

In some embodiments, the dust screen is an integrally formed structure.

In some embodiments, the dust cap is detachably connected to the fixing portion by screwing.

In certain embodiments, the thickness of the fixation portion is greater than the thickness of the filter portion.

In some embodiments, the dust screen is connected to the dust cover through a first mounting member, the first mounting member has an accommodating space, an inner wall of the accommodating space has a clamping space, the dust cover is provided with a second mounting member, the second mounting member is accommodated in the accommodating space, and the second mounting member is provided with a protruding clamping portion located in the clamping space.

In some embodiments, the detent space retains the detent.

In some embodiments, the thickness of the locking space is smaller than the thickness of the locking portion, and/or at least one of the locking portion and the inner wall of the locking space is provided with a friction member for increasing the friction force between the locking portion and the inner wall of the locking space.

In some embodiments, the receiving space has an opening for inserting or removing the second mounting member into or from the receiving space during the installation or removal of the dust cover, a notch is formed in a periphery of the opening, the notch is used for the card portion to pass through, and after the second mounting member enters the receiving space during the installation of the dust cover, a self-angle of the dust cover is located at a rotation starting position, and the locking of the dust cover is achieved after the rotation of the second mounting member by a preset angle from the starting position.

In some embodiments, an elastic limiting member is disposed on the dust screen, the elastic limiting member extends into the clamping space, and the elastic limiting member abuts against the clamping portion.

In some embodiments, the elastic stopper comprises at least one of a spring piece and a ball plunger.

In some embodiments, the locking portion is provided with a locking groove, and the locking groove receives a portion of the elastic piece.

In some embodiments, the elastic sheet includes a first section, a second section and a third section, the first section is connected to the dust screen, the second section is connected to the first section and the third section, the first section, the second section and the third section are inclined upward relative to a plane where the dust screen is located, and the inclination angles of the first section, the second section and the third section are gradually increased along a rotation installation direction of the dust cover.

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 is a schematic view of a drying apparatus according to an embodiment of the present invention;

FIG. 2 is another schematic structural view of a drying apparatus according to an embodiment of the present invention;

FIG. 3 is an exploded schematic view of a drying apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a drying apparatus according to an embodiment of the present invention;

FIG. 5 is a partially exploded schematic view of a filter assembly according to an embodiment of the present invention;

FIG. 6 is another partially exploded schematic view of a filter assembly according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a dust cover according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a dust screen according to an 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 by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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 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.

The drying apparatus of the present invention can remove water and moisture from objects (e.g., hair, fabrics) by utilizing an Infrared (IR) radiation source as a source of thermal energy. The infrared radiation source can emit infrared energy having a predetermined wavelength range and power density to heat the object. The heat carried by the infrared energy is transferred directly to the object in a radiative heat transfer manner such that the heat transfer efficiency is improved as compared to conventional convective heat transfer (e.g., substantially no heat is absorbed by the surrounding air in a radiative heat transfer manner, whereas a significant portion of the heat is absorbed by the surrounding air and carried away in a conventional conductive heat transfer manner). The infrared radiation source may be used in conjunction with a motor, and the air flow generated by the wind assembly further accelerates the evaporation of water from the object.

Another benefit of using infrared radiation as a source of thermal energy is that infrared heat can penetrate the hair shaft up to the cortex of the hair shaft, thus drying the hair faster and relaxing and softening the hair. Infrared energy is also thought to be beneficial to scalp health and to stimulate hair growth by increasing blood flow to the scalp. The use of an infrared radiation source also makes the drying apparatus compact and lightweight. The improved heat transfer efficiency and energy efficiency of the infrared radiation source may also extend the run time of the wireless drying apparatus powered by the embedded battery.

Referring to fig. 1, a drying apparatus 100 according to an embodiment of the present invention may include a housing 10, a wind power assembly 20, and a radiation source 30. A main air duct 40 is provided in the housing 10. The housing 10 may house various electrical, mechanical and electromechanical components, such as a wind power assembly 20, a radiation source 30, a control board (not shown), and a power adapter (not shown), among others.

In one embodiment, the housing 10 may include a body 102 and a handle 104, each of the body 102 and the handle 104 may house at least a portion of the electrical, mechanical, and electromechanical components therein. In some embodiments, the body 102 and the handle 104 may be integrally connected. In some embodiments, the body 102 and the handle 104 may be separate components. For example, the handle 104 may be detachable from the body 102. In one example, the detachable handle 104 may house a power source 50 (e.g., one or more batteries) therein for powering the drying appliance 100. The housing 10 may be made of an electrically insulating material, a metal material coated with an electrically insulating material, or a combination of an electrically insulating material and a metal material coated or not coated with an electrically insulating material, and is not particularly limited herein. The housing 10 may be provided with one or more main air ducts 40 inside, in the illustrated embodiment, the main air duct 40 is provided inside the body 102, and the main air duct 40 may be fixed inside the body 102, so that the airflow generated by the wind power assembly 20 can stably flow, and the occurrence of airflow disturbance outside the expectation can be avoided. The primary air duct 40 may include an intake vent 402 and an exhaust vent 404. In one example, the intake vent 402 and the exhaust vent 404 may be positioned at opposite ends of the drying apparatus 100 along a longitudinal direction of the drying apparatus 100 (e.g., a length direction of the body 102). The wind power assembly 20 may be located in the main air duct 40 of the body 102, in one embodiment, the handle 104 is provided with the auxiliary air duct 42, and the wind power assembly 20 may also be located in the auxiliary air duct 42 of the handle 104, which is not limited herein. In the embodiment shown in fig. 1, the intake vent 402 is disposed at one end of the body 102, and in other embodiments, the intake vent 402 may be disposed at the handle 104, or the handle 104 and the body 102, and is not particularly limited herein. In one embodiment, when the power source 50 is disposed within the handle 104, an auxiliary air duct 42 may be formed between an outer wall of the power source 50 and an inner wall of the handle 104, the auxiliary air duct 42 communicating with the main air duct 40. In this manner, heat generated by the power supply 50 may enter the main air duct 40 via the auxiliary air duct 42 and be carried outside the drying apparatus 100 by the air flow in the main air duct 40, so that the power supply 50 can operate in a suitable temperature range.

The cross-sectional shape of the outlet 404 may be any shape, preferably circular, oval, rectangular (rectangular), square, or various variations of circular and quadrilateral shapes, such as quadrilateral with four corners rounded, etc. And is not particularly limited herein.

In one example, a main duct 40 is disposed in the body 102, and the main duct 40 is substantially cylindrical. It is understood that in other embodiments, the main duct 40 may have other shapes, such as a funnel shape, a Y-shape, and other regular or irregular shapes, and is not limited herein.

In one embodiment, the radiation source 30 may be located between the main duct 40 and the inner wall of the body 102, for example, a plurality of radiation sources 30 may be arranged around the air outlet 404 of the main duct 40 or on one side of the main duct 40.

In one embodiment, the radiation source 30 may be surrounded by the main air duct 40, and in particular, the radiation source 30 may be placed in the main air duct 40.

In one embodiment, the radiation source 30 may include a reflector cup 302 and a luminescent element 304, the luminescent element 304 being positioned within the reflector cup 302. When the radiation source 30 is in operation, the light-emitting member 304 emits infrared radiation, a portion of the infrared radiation directly exits the reflector cup 302 to the outside of the drying apparatus 100, and another portion of the infrared radiation is reflected by the reflective surface in the reflector cup 304 to the outside of the drying apparatus 100.

In one embodiment, the wind assembly 20 is located in the housing 10 and is used to generate an airflow in at least one of the primary air chute 40 and the secondary air chute 42. In one example, the wind assembly 20 may be disposed within the main duct 40 of the body 102 proximate to the intake vent 402. The wind assembly 20 may include a drive portion 202 and an impeller 204. The impeller 204 may include a plurality of blades. When the impeller 204 is driven by the driving portion 202, the rotation of the impeller 204 may send ambient air into the main duct 40 through the intake opening 402 to generate an airflow, push the generated airflow through the main duct 40 and discharge the airflow from the exhaust opening 404. The wind assembly 20 may include a brushless motor, and the rotational speed of the impeller 204 may be adjusted under the control of a controller (not shown). For example, the rotational speed of impeller 204 may be controlled by a preset program, user input, or sensor data.

The wind assembly 20 is shown disposed in the body 102 in fig. 1 and 2, it being understood that in other embodiments, the wind assembly 20 may also be disposed in the handle 104. For example, rotation of the impeller 204 may draw air into an intake vent 402 disposed at the handle 104 and push the air through the main duct 40 to an outlet vent 404 disposed at one end of the body 102. The main duct 40 communicates with the auxiliary duct 42.

In one embodiment, the motor speed of the wind turbine assembly 20 is 50000rpm or greater. That is, the motor speed is at least 5 ten thousand revolutions per minute. In this way, by using a high-speed motor (the rotation speed of the motor is 50000rpm or more), sufficient air volume can be generated and the radiation source 30 can be properly radiated.

In addition, when the hair dryer is in operation, the motor of the wind power assembly 20 drives the blades to rotate at a high speed, so that air is sucked from the air inlet 402 and blown out from the air outlet after wind is formed inside. In order to avoid impurities from entering the shell, a filter assembly is generally designed at the air inlet, allows air to pass through, and simultaneously blocks particulate matters exceeding a certain radius size to play a role in filtering air. However, since the filter assembly generally has dense filter holes for blocking the passage of impurities with sizes exceeding the aperture of the filter holes, the impurities accumulated in the filter assembly may block the filter holes in long-term use, which may cause the air permeability of the filter assembly to decrease, thereby affecting the air intake efficiency of the blower.

To facilitate the cleaning of the impurities, please refer to fig. 1, 3 and 4, the drying apparatus 100 according to the embodiment of the present invention further includes a filter assembly 70, and the housing 10 has an opening 106. The filter assembly 70 includes a dust cover 702 and a dust screen 704, the dust screen 704 being positioned within the housing 10, the dust cover 702 being positioned within the opening 106 and removably coupled to the dust screen 704, the dust cover 702 defining a portion of the opening 106 as an intake vent 402, the airflow entering through the intake vent 402 passing through the dust screen 704 into the interior of the housing 10.

During use of the drying apparatus 100, air enters from the air inlet 402, and the dust screen 704 is located on a path of the air flow for filtering the air. The dust cover 702 is detachably connected with the dust screen 704, and after sundries accumulated on the dust screen 704 influence the air intake efficiency after the dust cover is used for a period of time, the dust screen 704 needs to be cleaned, the dust cover 702 can be directly detached, and the dust screen 704 is exposed integrally. After cleaning is completed, the dust cap 702 is installed back. Therefore, sundries accumulated on the dust screen 704 can be cleaned, and the air inlet efficiency of the drying equipment 100 is guaranteed.

Specifically, the size of the filtering holes of the dust-proof net 704 may be specifically defined according to the impurities (such as hair, dust, etc.) to be filtered, and is not specifically defined herein.

The dust cap 702 and the dust screen 704 can be detachably connected by, but not limited to, a screw-on connection, a magnetic attachment, a snap connection, or a threaded connection. Preferably, in an embodiment, the dust cap 702 is detachably connected to the dust screen 704 by a screwing manner, and compared with a magnetic attraction manner, the screwing manner does not use a magnet, so that the influence of the magnet on a human body (such as a cardiac pacemaker) is reduced, and compared with a threaded connection manner, the mounting process of the screwing manner is more efficient, and the dust screen 704 is integrated, so that the dust cap is simple and compact.

The dust cap 702 in the installed state can limit air from entering the housing 10 along the edge of the dust cap 702, and can also act as a barrier to debris (e.g., dust, hair, etc.).

In one embodiment, the periphery of the dust cap 702 is spaced from the inner wall of the opening 106 to divide the opening 106 into the annular intake vent 402, and the dust screen 704 has an annular filter portion 706. Like this, cyclic annular air intake 402 can make the air current can more evenly enter into inside the casing 10, avoids the air inlet inhomogeneous and leads to the inside noise that arouses by the atmospheric pressure difference that produces of casing 10, has improved user and has used experience, and annular filter portion 706 can be better in addition cover cyclic annular air intake 402, promotes dustproof effect.

Specifically, the inner diameter of the opening 106 is larger than the outer diameter of the dust cap 702, and the dust cap 702 is disposed coaxially with the opening 106, such that the periphery of the dust cap 702 is spaced apart from the inner wall of the opening 106 to form an annular air inlet 402.

Referring to fig. 2 and 4, when the wind power assembly 20 works, the airflow enters the interior of the housing 10 through the annular air inlet 402, is filtered by the filter portion 706, enters the interior of the housing 10, is discharged by the wind power assembly 20, and finally exits from the air outlet 404 to the target area. In fig. 2 and 4, the dashed arrows indicate the airflow direction.

In the embodiment shown in FIG. 2, the annular intake vent 402 is continuous, and the annular intake vent 402 is formed by spacing the entire periphery of the dust cap 702 from the inner wall of the opening 106. In one embodiment, the annular intake vent 402 may be discontinuous, i.e., the annular intake vent 402 may be formed by a plurality of fan-shaped intake vents 402, and one fan-shaped intake vent 402 is formed by a portion of the periphery of the dust cap 702 spaced apart from the inner wall of the opening 106. And another portion of the periphery of the dust cap 702 may be connected to the inner wall of the opening 106.

The area of the annular filter portion 706 is preferably larger than the area of the annular air inlet 402, so as to achieve better dust-proof effect.

In one embodiment, the dust cap 702 may also close the opening 106, and one or more dust cap 702 through holes are formed in the dust cap 702, and the air inlet 402 is formed by the dust cap 702 through holes, that is, the opening 106 is partitioned to form a plurality of air inlets 402. Preferably, the through holes of the dust cover 702 are formed at the positions corresponding to the positions of the filter portions 706 of the dust screen 704, so that the length of the air inlet path can be reduced, and air outlet can be faster.

In the illustrated embodiment, the drying apparatus 100 also includes an air intake noise reduction structure 60. The noise reduction structure 60 is housed in the housing 10. Referring to fig. 3-4, the noise reducing structure 60 includes a support 602 and a porous noise attenuating element 604. The holder 602 has a cavity 608, and a sound-deadening passage 610 communicating with the outside of the cavity 608 is formed in the peripheral wall of the cavity 608. The porous noise damping member 604 is disposed on the outer surface of the peripheral wall of the cavity 608, and the porous noise damping member 604 has an air inlet end 612 facing the opening 106. The dust screen 704 is connected to the cavity 608 and covers the air intake end of the porous silencer 604.

Specifically, air filtered by the dust screen 704 may enter the porous noise suppressor 604 from the air inlet end of the porous noise suppressor 604, and then may enter the cavity 608 through the noise reduction channel 610. And the noise in the casing 10 is filtered through the silencing passage 610 and the porous silencing piece 604 in sequence, so that the effect of noise reduction and silencing is achieved, and the user experience is improved. The noise in the housing 10 mainly comes from the noise generated when the motor of the wind power assembly 20 is operated, and some noise is the noise of the air flow in the air duct, i.e. wind noise. Further, the porous noise reduction piece 604 can also play a certain dustproof role, and the dust screen 704 is matched to realize twice filtering, so that the dustproof effect is improved.

In the illustrated embodiment, an opening 106 is defined at one end of the body 102, and the noise reduction structure 60 is received in the body 102 proximate the opening 106. Noise generated during operation of the motor of the wind power assembly 20 may reach the inlet vent 402 through the noise reduction passage 610 and the porous noise reduction member 604, and the noise is reduced twice, and finally transmitted out of the housing 10 from the inlet vent 402. Further, when the noise reaches the air inlet 402, the noise is also reflected and blocked by the edge of the dust cover 702 and the inside of the housing 10 (as shown in the area a in fig. 4), and a certain noise reduction effect can also be achieved.

In one embodiment, the sound attenuating channel 610 is configured to filter high frequency noise and the porous sound attenuating member 604 is configured to filter medium and low frequency noise. Specifically, in one example, high frequency noise may refer to noise above (including 2000hz) 2000hz in frequency. Medium and low frequency noise may refer to noise at frequencies below 2000hz (excluding 2000 hz). Through the combination of the silencing passage 610 and the porous silencing piece 604, the noise of medium-low high frequency generated when the motor operates can be effectively reduced, and the user experience is improved. In the embodiment shown in FIG. 3, the porous noise attenuating element 604 is annular and fits around the cylindrical cavity 608.

In one embodiment, the porous sound attenuating element 604 comprises a sponge sleeve. Particularly, the material of the sponge sleeve is easy to obtain, the cost is controllable, the sponge sleeve has certain elasticity, deformation is allowed when the sponge sleeve is installed under stress, and the deformation can be restored when external force is cancelled, so that the appearance and the noise reduction effect of the sponge sleeve are not influenced. It is understood that in other embodiments, the porous noise attenuating element 604 may be made of other elastic or non-elastic materials, and the porous noise attenuating element 604 is not limited thereto.

In one embodiment, the dust screen 704 has a fixing portion 708 in the middle and a filter portion 706 around the dust screen 704. Thus, the dust screen 704 can be attached to the fixing portion 708.

Specifically, along the axial direction L of the body 102, the cavity 608 includes a first end 624 and a second end 626 opposite to each other, the second end 626 is close to the air inlet 402 relative to the first end 624, the peripheral wall connects the first end 624 and the second end 626, the first end 624 is an opening 106 end, the second end 626 is a closed end, and the fixing portion 708 can be installed at the second end 626. The manner in which the retainer 708 is mounted to the second end 626 includes, but is not limited to, a screw-on manner, a snap-on manner, a welding manner, and an interference fit manner. In the illustrated embodiment, the securing portion 708 is mounted to the second end 626 by way of screw fixation.

In one embodiment, the thickness of the fixation portion 708 is greater than the thickness of the filter portion 706. Thus, the thickness of the filter part 706 is small, which is suitable for forming filter holes and has low cost. The thickness of the fixing portion 708 is large, and the fixing pretightening force is borne, so that a firmer mounting effect can be provided.

In one embodiment, the dust screen 704 is a one-piece structure. As such, the dust screen 704 is easy to manufacture.

Specifically, in one example, the dust screen 704 may be made of a metal material, and a thick metal sheet with thin edges may be punched to form the fixing portion 708, and then the filtering portion 706 may be formed by punching holes at the edges, so as to obtain the entire dust screen 704. In another example, the dust screen 704 may be formed from a plastic material, and the entire dust screen 704 may be formed by injection molding using a thick-center, thin-edge mold cavity. It will be appreciated that in other embodiments, the dust screen 704 may be a separate structure, for example, the retainer 708 and the filter 706 may be manufactured separately and then assembled together to form the entire dust screen 704.

In one embodiment, referring to fig. 4 and 5, the fixing portion 708 has an elastic limiting member 710, the filtering portion 706 has a filtering hole (not shown), the elastic limiting member 710 abuts against the dust cap 702, the fixing portion 708 has a first mounting member 712, and the first mounting member 712 axially limits the dust cap 702. Thus, the elastic stopper 710 keeps the dust cap 702 stable, and prevents the dust screen 704 from shaking during use.

Specifically, the elastic limiting member 710 abuts against the dust cover 702, that is, the elastic limiting member 710 applies an elastic acting force to the dust cover 702, so that the dust cover 702 tends to be away from the elastic limiting member 710, and the first mounting member 712 axially limits the dust cover 702, so that the dust cover 702 is not pushed to move. In fig. 3, the elastic limiting member 710 applies a force to the dust cap 702 such that the dust cap 702 has a tendency to move to the right in the axial direction L of the body, and the first mounting member 712 limits the dust cap 702 to the right in the axial direction L of the body 102. When the dust cap 702 is in the installation state, the acting force of the elastic limiting member 710 always exerts an acting force on the dust cap 702 to pre-tighten the dust cap, so that the dust cap 702 can be prevented from shaking in the use process of the drying equipment 100.

In one embodiment, the dust cap 702 is removably attached to the retainer 708 by a twist-on process. So, compare in the mode of magnetism, the knot mode of unscrewing need not magnet, reduces the influence of magnet to human (cardiac pacemaker etc.), for threaded connection mode, the installation of knot mode is more high-efficient.

In one embodiment, the thickness of the fixation portion 708 is greater than the thickness of the filter portion 706. The fixing portion 708 with a larger thickness can bear the pre-tightening force for fixing, so that a better installation effect can be achieved, and the filtering portion 706 with a smaller thickness can be suitable for lower processing and low cost to form the filtering holes.

In one embodiment, please refer to fig. 5 and 6, the dust screen 704 is connected to the dust cover 702 through a first mounting member 712, the first mounting member 712 has an accommodating space 714, an inner wall of the accommodating space 714 has a locking space 716, the dust cover 702 has a second mounting member 718, the second mounting member 718 is accommodated in the accommodating space 714, and the second mounting member 718 is provided with a protruding locking portion 720 located in the locking space 716. In this manner, a removable connection of the dust cap 702 to the dust screen 704 may be achieved.

Specifically, in this embodiment, when the dust cover 702 is attached, the second attachment member 718 and the locking portion 720 may be inserted into the receiving space 714, and then the dust cover 702 may be rotated so that the locking portion 720 is locked into the locking space 716, thereby attaching the dust cover 702. During disassembly, the dust cover 702 is rotated in the opposite direction to disengage the locking portion 720 from the locking space 716, and then the second mounting member 718 and the locking portion 720 are removed from the receiving space 714, thereby achieving the disassembly of the dust cover 702.

In one embodiment, the detent space 716 catches the detent 720. In this way, the dust cap 702 in the attached state can be prevented from accidentally falling due to inversion.

Specifically, after the locking portion 720 is locked in the locking space 716, the dust cover 702 may be turned upside down and easily dropped off due to an accident such as falling or shaking during the use of the drying apparatus 100. The locking space 716 locks the locking portion 720 to prevent the dust cover 702 from falling and losing due to accidental reverse rotation.

In one embodiment, the thickness of the detent space 716 is less than the thickness of the detent 720. Thus, the catching space 716 may catch the catching portion 720.

Specifically, since the thickness of the locking space 716 is smaller than the thickness of the locking portion 720, the user can lock the locking portion 720 into the locking space 716 with a slight force when the dust cover 702 is installed.

In one embodiment, at least one of the card portion 720 and the inner wall of the locking space 716 is provided with a friction member (not shown) for increasing the friction force between the card portion 720 and the inner wall of the locking space 716. Thus, the locking space 716 can lock the locking portion 720.

Specifically, friction members may be disposed on the inner walls of the locking portion 720 or the locking space 716, or friction members may be disposed on the inner walls of the locking portion 720 and the locking space 716. The friction member functions to increase the friction force between the two members. When the dust cap 702 is installed, the user can use a slight amount of force to overcome the friction force and snap the latch portion 720 into the latching space 716.

The friction member may be a unitary structure with the card portion 720 or mounted on the card portion 720. The friction member may be integral with the inner wall of the retention space 716 or mounted on the inner wall of the retention space 716. The friction member may include a male-female structure or other structure or material that may increase friction.

In one embodiment, the thickness of the locking space 716 is less than the thickness of the locking portion 720, and at least one of the locking portion 720 and the inner wall of the locking space 716 is provided with a friction member.

In one embodiment, the receiving space 714 has an opening for inserting or removing the second mounting member 718 from the receiving space 714 during the installation or removal of the dust cover 702, and the opening has a notch 722 at a periphery thereof, and the notch 722 is used for the clip portion 720 to pass through. In addition, in the installation process of the dust cover 702, after the second installation piece 718 enters the accommodation space 714, the self angle of the dust cover 702 is located at the initial position of rotation, and the dust cover 702 is locked after rotating from the initial position by a preset angle. In this manner, the attachment and detachment operations of the dust cap 702 are facilitated.

Specifically, the opening of the receiving space 714 and the notch 722 form an overall shape matching a planar shape formed by the second mounting member 718 and the locking portion 720. When the dust cover 702 is installed, the second mounting member 718 may be aligned with the opening of the receiving space 714, the locking portion 720 may be aligned with the notch 722, and then the second mounting member 718 is inserted toward the first mounting member 712, so that the second mounting member 718 is inserted into the receiving space 714 through the opening of the receiving space 714, and the locking portion 720 enters the initial position of the locking space 716 through the notch 722, which may be the initial position when the dust cover 702 itself rotates. From this initial position, the dust cap 702 can be rotated a predetermined angle to lock the dust cap 702. The predetermined angle is associated with a position in the catching space 716 for locking the catching portion 720.

For example, the thickness of a certain portion of the inner wall of the locking space 716 is small, so that when the dust-proof cover 702 drives the locking portion 720 to rotate to the certain portion, the locking portion 720 is locked by the component, and the dust-proof cover 702 is locked. Or, a friction member is disposed at a certain position of the inner wall of the locking space 716, so that when the dust-proof cover 702 drives the locking portion 720 to rotate to the certain position, the friction member increases the friction force on the locking portion 720, thereby locking the dust-proof cover 702.

In one embodiment, the dust screen 704 is provided with an elastic limiting member 710, the elastic limiting member 710 extends into the locking space 716, and the elastic limiting member 710 abuts against the locking portion 720. In this way, the dust cap 702 can be locked by the elastic stopper 710.

Specifically, in the embodiment shown in fig. 5, the elastic limiting member 710 is disposed on the fixing portion 708, the thickness of the fixing portion 708 is greater than that of the filter portion 706, and the fixing portion 708 can bear a fixing pre-tightening force, so as to achieve a relatively stable locking effect. The number of the elastic limiting members 710 is two, a through hole is formed in the middle of the fixing portion 708, and the positions of the two elastic limiting members 710 connected to the inner wall of the through hole are about 180 degrees apart, so that the two elastic limiting members 710 can provide a uniform acting force to the dust cap 702. It is understood that in other embodiments, the number of the elastic stoppers 710 may be a single one, or more than two, and is not limited herein.

The elastic limiting member 710 abuts against the locking portion 720, so that the elastic limiting member 710 provides an elastic acting force to the locking portion 720 to press the locking portion 720 to a side surface of the locking space 716, thereby preventing the dust cover 702 from shaking during the use of the drying apparatus 100.

In one embodiment, the elastic stopper 710 includes at least one of a spring 724 and a ball plunger. Thus, the specific structural form of the elastic limiting member 710 can be flexibly selected.

Specifically, in an example, the elastic limiting member 710 may include an elastic sheet 724 and a ball plunger, that is, the elastic limiting member 710 may be composed of the elastic sheet 724 and the ball plunger, where the elastic sheet 724 abuts against one portion of one of the clamping portions 720, and the ball plunger abuts against another portion of the clamping portion 720, or there may be a plurality of clamping portions 720, the sum of the number of the elastic sheets 724 and the ball plungers is the same as the number of the clamping portions 720, one elastic sheet 724 may abut against one of the clamping portions 720, and the ball plunger may abut against the other clamping portion 720.

In one example, the resilient stoppers 710 may include the same number of ball plungers as the number of the clip portions 720, and one ball plunger may abut one clip portion 720.

In the example of fig. 5, the elastic stoppers 710 may include elastic pieces 724, the number of the elastic pieces 724 is the same as the number of the card portions 720, and one elastic piece 724 may abut one card portion 720. In fig. 5 and 7, the number of the elastic pieces 724 and the number of the locking portions 720 are two. It is understood that the number of the resilient pieces 724 and the number of the locking portions 720 may be other numbers.

In fig. 5, the elastic piece 724 extends from the inner wall of the through hole in the middle of the fixing portion 708 in a direction away from the fixing portion 708, and abuts against the engaging portion 720.

In one embodiment, the locking portion 720 defines a locking groove 726, and the locking groove 726 receives a portion of the elastic piece 724. Thus, the contact between the elastic sheet 724 and the card portion 720 is not easy to separate, and a certain locking hand feeling can be provided for a user.

Specifically, the clamping groove 726 is V-shaped, and the bottom of the clamping groove 726 has a rounded corner structure. The spring 724 includes a V-shaped portion 728 at the end, the top of the V-shaped portion 728 having a rounded configuration, and the rounded configuration of the slot 726 matches the rounded configuration of the V-shaped portion 728. The location of the V-shaped portion 728 defines a locked position. Thus, when the dust cap 702 rotates from the initial position of rotation to the locking position, the clip portion 720 moves along the root of the elastic piece 724 to the V-shaped portion 728 at the end, and the deformation amount of the elastic piece 724 increases in the process. When the groove 726 reaches the position of the V-shaped portion 728, the restoring force of the elastic piece 724 enables the V-shaped portion 728 to rebound and then be violently clamped into the groove 726, so that the dust cover 702 is locked and a certain locking means is provided for a user, and a 'snap' sound is generated to prompt the user that the dust cover 702 is locked in place. When disassembling, the user can rotate the dust cap 702 slightly in the opposite direction of the installation of the dust cap 702 to separate the elastic piece 724 from the slot 726, and then continue to rotate the locking portion 720 to the initial position (i.e. aligned with the notch 722), and then the dust cap 702 can be taken out.

It is understood that in other embodiments, the structure of the slot 726 and the structure of the end of the spring 724 may have other structures, and are not limited to the illustrated embodiments.

In one embodiment, please refer to fig. 5 and 8, the elastic piece 724 includes a first section 730, a second section 732 and a third section 734, the first section 730 is connected to the dust-proof net 704, the second section 732 is connected to the first section 730 and the third section 734, the first section 730, the second section 732 and the third section 734 are inclined upward relative to the plane of the dust-proof net 704, and the inclination angles of the first section 730, the second section 732 and the third section 734 are gradually increased along the rotation installation direction of the dust-proof cover 702. Thus, during the installation of the dust cap 702, the elastic sheet 724 can provide a gradually increasing abutting force (pressure) to the card portion 720, so that the user gradually feels that the dust cap is installed in place, and during the detachment of the dust cap 702, the elastic sheet 724 can provide a gradually decreasing abutting force (pressure) to the card portion 720, so that the user gradually feels that the dust cap is detached in place.

Specifically, in one example, the first section 730 is inclined at an angle of 0 degrees relative to the plane of the dust screen 704, the second section 732 and the third section 734 are both inclined at an angle greater than 0 degrees relative to the plane of the dust screen 704, and the third section 734 is inclined at an angle greater than the angle of inclination of the second section 732.

The dust cover 702 mounting process will be described as an example. In the embodiment shown in fig. 8, a V-shaped portion 728 is connected to the end of the third section 734. When the dust cap 702 is located at the initial position, the card portion 720 may abut against the root of the elastic piece 724, i.e., abut against one end of the first section 730, when the dust cap 702 rotates to the locking position, the card portion 720 moves to the other end along one end of the first section 730, and reaches the other end of the first section 730 and transits to one end of the second section 732, because the inclination angle of the second section 732 is greater than that of the first section 730, the card portion 720 needs to overcome greater resistance, and therefore the user needs to rotate the dust cap 702 with greater force. As the latch 720 continues to move along the end of the second segment 732 toward the other end, reaches the other end of the second segment 732, and transitions to the end of the third segment 734, the latch 720 needs to overcome more resistance because the angle of inclination of the third segment 734 is greater than the angle of inclination of the second segment 732, and thus the user needs to rotate the dust cap 702 with more force. Locking of the dust cap 702 is achieved when the V-shaped portion 728 snaps into the catch 726. The disassembly process is the reverse of the installation process and is not expanded in detail here.

In one embodiment, referring to fig. 3, the housing 10 includes a body 102 and a pressing ring 642, the body 102 defines a mounting opening 108, the pressing ring 642 is mounted in the mounting opening 108, the pressing ring 642 defines an opening 106, and the pressing ring 642 positions the dust screen 704 in an axial direction of the body 102. Thus, the shaking of the outer ring of the dust screen 704 can be avoided.

Specifically, in the embodiment shown in fig. 3, the press ring 642 may be mounted to the mounting opening 108 of the body 102 by a snap-fit. The outer wall of the pressing ring 642 can be provided with a clamping groove 644, and the inner wall of the body 102 close to the mounting opening 108 is provided with a clamping block 646. When the pressing ring 642 is installed in the installation opening 108, the clamping groove 644 is aligned to the clamping block 646 to keep the position of the body 102, then the pressing ring 642 is pressed towards the inside of the body 102, the clamping block 646 is clamped into the clamping groove 644 after sliding, and the installation of the pressing ring 642 is achieved. It will be appreciated that in other embodiments, other mounting means may be used to mount the compression ring 642, such as a threaded connection, but not limited to a snap-fit connection.

In the embodiment shown in fig. 3, the inner wall of the pressing ring 642 may be provided with a plurality of limiting grooves 648, one end of the limiting groove 648 is an open end, the other end is a closed end, and the inner side wall of the limiting groove 648 is provided with a step 650. The edge of the dust screen 704 is provided with a plurality of outward protruding limiting parts 736. After the pressing ring 642 is mounted on the body 102, the limiting portion 736 at the edge of the dust screen 704 can be inserted into the limiting groove 648 from the opening end of the limiting groove 648 by rotating the dust screen 704, and rotated to a position corresponding to the step 650, and then limited by the closed end. One end of the limiting part 736 is abutted against the end face of the limiting groove 648, one side face of the limiting part 736 is abutted against by the step 650, so that the edge of the dust screen 704 is positioned in the axial direction of the body 102, and the closed end can also be used as a structure for circumferential positioning between the dust screen 704 and the pressing ring 642.

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 (15)

1. Drying apparatus, characterized in that it comprises:

a housing provided with an opening;

the filter assembly comprises a dust cover and a dust screen, wherein the dust screen is positioned in the shell, the dust cover is positioned in the opening and detachably connected with the dust screen, the dust cover enables a part of the opening to form an air inlet, and the air flow entering the air inlet passes through the dust screen and enters the shell.

2. The drying apparatus of claim 1, wherein a periphery of the dust cap is spaced from an inner wall of the opening to partition the opening into an annular air inlet, the dust screen having an annular filter portion.

3. The drying apparatus according to claim 2, wherein a fixing portion is provided in a middle portion of the dust screen, and the filter portion is provided on an outer ring of the dust screen.

4. The drying apparatus according to claim 3, wherein the fixing portion is provided with an elastic limiting member, the filtering portion is provided with a filtering hole, the elastic limiting member abuts against the dust cover, and the fixing portion is provided with a first mounting member which axially limits the dust cover.

5. Drying apparatus according to claim 3 in which the dust screen is of unitary construction.

6. Drying apparatus according to claim 3 in which the dust cover is releasably connected to the fixing by a screw-on arrangement.

7. Drying apparatus according to claim 4 or 6, wherein the thickness of the fixing portion is greater than the thickness of the filter portion.

8. The drying apparatus as claimed in claim 6, wherein the dust screen is connected to the dust cover by a first mounting member, the first mounting member defines an accommodating space, an inner wall of the accommodating space defines a locking space, the dust cover is provided with a second mounting member, the second mounting member is accommodated in the accommodating space, and the second mounting member is provided with a protruding locking portion located in the locking space.

9. The drying apparatus according to claim 8, wherein the catching space catches the catching portion.

10. Drying apparatus according to claim 9, characterised in that the thickness of the detent space is smaller than the thickness of the card portion and/or that at least one of the card portion and the inner wall of the detent space is provided with a friction element for increasing the friction between the card portion and the inner wall of the detent space.

11. The drying apparatus according to claim 8, wherein the receiving space has an opening for inserting or removing the second attachment member into or from the receiving space during the attachment or detachment of the dust cover, a notch is provided at a periphery of the opening, the notch is passed through by the catching portion, and an angle of the dust cover itself is located at a start position of rotation after the second attachment member enters the receiving space during the attachment of the dust cover, and the locking of the dust cover is achieved after the rotation of a predetermined angle from the start position.

12. The drying apparatus according to claim 8, wherein an elastic limiting member is disposed on the dust screen, the elastic limiting member extends into the locking space, and the elastic limiting member abuts against the locking portion.

13. The drying apparatus of claim 12, wherein the resilient stop comprises at least one of a spring, a ball plunger.

14. The drying apparatus according to claim 13, wherein the engaging portion has an engaging groove, and the engaging groove receives a portion of the resilient piece.

15. The drying apparatus according to claim 13, wherein the resilient piece includes a first section, a second section, and a third section, the first section is connected to the dust screen, the second section is connected to the first section and the third section, the first section, the second section, and the third section are inclined upward with respect to a plane in which the dust screen is located, and the inclination angles of the first section, the second section, and the third section are gradually increased along the rotational installation direction of the dust cover.

Images