CN215583977U - Shell structure of hand dryer and hand dryer - Google Patents

Abstract

The utility model relates to a shell structure of a hand dryer, which comprises a main machine shell (1), wherein the main machine shell (1) is provided with an inner shell (3) and an outer shell (4); the inner shell (3) is accommodated in the outer shell (4) and has a gap with the outer shell (4); the main machine shell (1) is provided with an air inlet (12) and an air outlet (15); the motor component arranged in the inner shell (3) drives external air to enter from the air inlet (12) and discharge from the air outlet (15) out of the hand dryer; the inner shell (3) is accommodated in the outer shell (4), and an air gap layer (16) is arranged between the inner shell and the outer shell so as to enhance the sound insulation effect, effectively reduce noise and improve user experience; in addition, a sound insulation sponge can be placed on the air gap layer (16); the utility model also relates to a corresponding hand dryer.

Description

Shell structure of hand dryer and hand dryer

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of portable hand nursing devices, in particular to a shell structure of a hand dryer and the hand dryer.

[ background of the utility model ]

The hand dryer generally mainly adopts a heating type and a high-speed air blowing drying type; the high-speed air-blowing dry type hand dryer is characterized in that the air speed is very high and can reach more than 130 m/s, the hand drying speed is about 10 s, the heating power is low and is only hundreds of watts, the heating function is only to keep the comfort level, the hand drying speed is basically not influenced, but the noise generated by the high air speed is relatively high; especially, the motor drives the air to flow to generate friction, and the noise such as the rotation and the vortex of the air flow generated in the air channel in the hand dryer is large, thereby greatly influencing the use experience of users.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

[ Utility model ] content

Aiming at the defects in the prior art, the utility model aims to provide a shell structure of a hand dryer and the hand dryer.

The technical scheme of the utility model is summarized as follows:

the utility model provides a shell structure of a hand dryer, which comprises a main machine shell, wherein the main machine shell is provided with an inner shell and an outer shell; the inner shell is accommodated in the outer shell and has a gap with the outer shell; the main machine shell is provided with an air inlet and an air outlet; the motor component arranged in the inner shell drives external air to enter from the air inlet and discharge from the air outlet.

Preferably, the inner shell is provided with an inner shell main body, an air inlet bottom plate connected with the bottom of the inner shell main body is arranged at the bottom of the inner shell main body, and the air inlet is formed in the air inlet bottom plate; the outer shell is fixedly connected with the inner shell through an air inlet bottom plate.

Preferably, the outer side wall of the inner shell is provided with at least one convex ring.

Preferably, the gap between the inner shell and the outer shell is filled with a noise reduction sponge.

Preferably, the inner shell main body comprises a first inner shell and a second inner shell, the first inner shell and the second inner shell are fixedly connected, and a sealing member is arranged at the joint.

Preferably, the shell comprises an upper shell and a lower shell, and the lower shell is fixedly connected with the air inlet bottom plate; the upper shell is fixedly connected with the inner shell main body.

Preferably, a motor area and a PCB area are defined in the inner shell from bottom to top, and an air inlet is formed in the bottom of the inner shell; the motor assembly in the motor area drives external air to enter the motor area from the air inlet, pass through the PCB area and be discharged from the air outlet at the upper part of the main machine shell for drying hands; the gap is an air gap layer to reduce noise transmission of the hand dryer and enhance the sound insulation effect.

Preferably, the air inlet bottom plate is provided with an outer extension part which radially exceeds the bottom edge of the inner shell main body; the outer shell is fixedly connected with the inner shell through the extending part of the air inlet bottom plate.

Preferably, the outer side wall of the inner shell is provided with a first convex ring, a second convex ring and a third convex ring from top to bottom, and the air gap layer and the air inlet bottom plate define a first gap layer, a second gap layer and a third gap layer; the first gap layer corresponds to a PCB region, and the second gap layer and the third gap layer correspond to a motor region.

The utility model also relates to a hand dryer, which comprises the shell structure and the motor assembly arranged in the inner shell, so that the motor assembly drives external air to enter the inner shell from the air inlet and be discharged from the air outlet.

Preferably, the bottom of the outer shell is lower than the bottom of the inner shell so as to define an air inlet area by the bottom of the outer shell and the bottom of the inner shell, and after external air enters the air inlet area, the external air enters the inner shell from the air inlet.

Preferably, the air inlet area is provided with an air inlet assembly, the air inlet assembly comprises a host base and a filtering assembly, and the filtering assembly is fixedly arranged between the bottom of the inner shell and the host base; the host base is downward relative to the bottom of the shell, so that an air inlet gap is formed between the host base and the edge of the bottom of the shell; outside air enters the air inlet area from the air inlet gap, and enters the motor area from the air inlet after passing through the filtering assembly.

Preferably, the air outlet is connected with the air guide assembly so as to guide the air flow of the air outlet into the hand drying air flow for drying hands.

Preferably, a wire pressing plate is further arranged between the inner shell and the outer shell, the part, extending to the space between the inner shell and the outer shell, of the external main power line is peeled off to form the built-in lead, and the built-in lead is pressed onto the outer wall of the inner shell through the wire pressing plate.

Preferably, the air conditioner further comprises a motor assembly arranged in the motor area and a PCB assembly arranged in the PCB area, so that the motor assembly drives outside air to enter from the air inlet, pass through the motor assembly and the PCB assembly and be discharged from the air outlet.

Compared with the prior art, the utility model has the beneficial effects that:

the shell structure of the hand dryer provided by the utility model adopts the design of the inner shell and the outer shell, and has a gap, and the sound insulation quantity of the shell structure can exceed the quality law due to the action of the elastic layer, so that the noise can be effectively reduced, and the user experience is improved; in addition, the gap can be filled with the noise reduction sponge, so that part of noise can be rebounded, and the transmission of noise is reduced. Further, the hand dryer of the present invention also has a corresponding technical effect.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

figure 1 is an exploded perspective view of the major components of the housing structure of the hand dryer of the present invention;

FIG. 2 is a front view schematically showing a sectional structure of a casing of the hand dryer of the present invention;

figure 3 is a schematic exploded perspective view of the major components of the housing structure of the hand dryer of the present invention;

figure 4 is an exploded perspective view of the inner shell of the housing structure of the hand dryer of the present invention;

FIG. 5 is a schematic exploded perspective view of the outer shell and air intake bottom plate of the housing structure of the hand dryer of the present invention;

FIG. 6 is a schematic perspective view of the sectional structure of the casing of the hand dryer of the present invention;

FIG. 7 is a schematic perspective view of a cross-sectional view of the housing structure (including noise reducing sponge) of the hand dryer of the present invention;

FIG. 8 is a schematic view of the construction of the hand dryer of the present invention;

fig. 9 is a schematic view of the structure of the air intake assembly of the hand dryer of the present invention.

Description of reference numerals:

1-a main machine shell; 11-an air intake area; 12-an air inlet; 13-motor area; 14-a PCB area; 15-air outlet; 16-an air gap layer; 161-a first gap layer; 162-a second gap layer; 163-third gap layer;

2-noise reduction sponge; 21-a first sponge layer; 22-a second sponge layer; 23-a third sponge layer;

3-inner shell; 31-a first inner housing; 32-a second inner housing; 33-a seal; 34-a first bolt hole; 35-a second bolt hole; 36-inner shell bolt holes; 37-a first bead; 38-a second bead; 39-third bead;

4-a housing; 42-an upper shell; 41-lower shell; 43-a first connection hole; 45-third bolt hole;

5-air intake bottom plate; 53-second connection hole; 54-third connection hole;

6-an air intake component; 61-a host base; 62-a filter assembly;

7-air guide component.

[ detailed description ] embodiments

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict. It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

The utility model provides a shell structure of a hand dryer, as shown in figures 1, 2 and 6, comprising a main machine shell 1, wherein the main machine shell 1 is provided with an inner shell 3 and an outer shell 4; the inner shell 3 is accommodated in the outer shell 4 with a gap from the outer shell 4; the main machine shell 1 is provided with an air inlet 12 and an air outlet 15; the motor component arranged in the inner shell 3 drives external air to enter from the air inlet 12 and discharge from the air outlet 15 out of the hand dryer; the design of the inner shell and the outer shell is adopted, and the air gap layer is arranged, so that the sound insulation quantity of the shell structure can exceed the quality law due to the action of the elastic layer of the air gap layer, the noise can be effectively reduced, and the user experience is improved; the internal structure of the hand dryer can cause a plurality of gas rotations and vortexes and also cause noise; therefore, the hand dryer shell adopts a double-layer structure to enhance the sound insulation effect and effectively reduce the noise.

In some embodiments, as shown in fig. 1, 3 and 4, the inner casing 3 has an inner casing main body, an air intake bottom plate 5 connected to the bottom of the inner casing main body is disposed at the bottom of the inner casing main body, and the air intake 12 is disposed on the air intake bottom plate 5; the outer shell 4 is fixedly connected with the inner shell 3 through an air inlet bottom plate 5.

In some embodiments, as shown in fig. 1, 2 and 4, the outer side wall of the inner shell 3 is provided with at least one convex ring for supporting the outer shell 4; the supporting and connecting structure between the inner shell 3 and the outer shell 4 is realized, and the stability of the shell structure is ensured.

In some embodiments, as shown in fig. 1, 3 and 7, the gap between the inner shell 3 and the outer shell 4 is filled with the noise reduction sponge 2, which can rebound a part of noise and reduce the transmission of noise.

In some embodiments, as shown in fig. 3 and 4, the inner housing body includes a first inner housing 31 and a second inner housing 32, the first inner housing 31 and the second inner housing 32 are fixedly connected, and a sealing member 33 is disposed at the connection.

In some embodiments, the housing 4 comprises an upper shell 42 and a lower shell 41, and the lower shell 41 is fixedly connected with the air intake bottom plate 5; the upper housing 42 is fixedly connected to the inner housing main body.

In some embodiments, as shown in fig. 1, 2 and 6, the portable electronic device comprises a main machine housing 1, the main machine housing 1 has an inner housing 3 and an outer housing 4, a motor area 13 and a PCB area 14 are defined in the inner housing 3 from bottom to top, and an air inlet 12 is arranged at the bottom of the inner housing 3; the motor components in the motor area 13 drive external air to enter the motor area 13 from the air inlet 12, pass through the PCB area 14, and are exhausted from the air outlet 15 at the upper part of the main machine shell 1 for drying hands; the inner casing 3 is received within the outer casing 4 with a gap, for effective presentation, to the outer casing 4, which may be considered an air gap layer 16 to reduce noise transmission from the hand dryer; adopting a flowing mode of air flow from bottom to top, and sequentially passing through a motor area and a PCB area; the design of the inner shell and the outer shell is adopted, and the air gap layer is arranged, so that the sound insulation quantity of the shell structure can exceed the quality law due to the action of the elastic layer of the air gap layer, the noise can be effectively reduced, and the user experience is improved; the air is driven by the motor component in the motor area 13, enters the air duct of the motor component, and then enters the PCB area 14, components such as a power supply of the hand dryer, a PCB control panel and the like are arranged in the PCB area, partial heat in the air can be taken away by the air flow, the air flow is discharged from the air outlet 15, the user places the hands at the position of the air outlet 15, and the hands are dried by the high-speed air flow; the high-speed motor is adopted, the noise is high, in order to fully utilize heat, airflow passes through the PCB area 14, the internal structure causes the airflow channel to be complex, and a plurality of gas rotations and eddy currents exist and also have noise; therefore, the hand dryer shell adopts a double-layer structure to enhance the sound insulation effect and effectively reduce the noise.

In some embodiments, as shown in fig. 1, 3 and 4, the inner casing 3 has an inner casing main body, an air intake bottom plate 5 located at the bottom of the inner casing main body and connected to the bottom of the inner casing main body, and the air intake 12 is located at the center of the air intake bottom plate 5; specifically, the inner shell is provided with an air inlet bottom plate 5 to facilitate disassembly and assembly, and a PCB area 14 and a motor area 13 are arranged in the inner shell body; after the air inlet bottom plate 5 is detached, a power supply and a PCB control board can be installed in the PCB area 14, motor components are installed in the motor area 13, and then the air inlet bottom plate 5 is installed back to the bottom of the inner shell main body, so that the operation is convenient and rapid; further, the inner shell main body can be fixedly connected by bolts, screws and the like, as shown in fig. 4, the bottom of the inner shell main body is provided with a second bolt hole 35, the air inlet bottom plate 5 at the corresponding position is provided with a second connecting hole 53, the two are fixed in a matched manner, and the bolts and the screws are arranged on the second connecting hole 53 for connection, certainly, in order to ensure the fixation, the paired second bolt holes 35 and the paired second connecting holes 53 can be circumferentially arranged in a plurality, so that the connection stability of the bottom is ensured, as shown in the figure, 4 pairs are arranged.

In some embodiments, as shown in FIGS. 1, 2, and 4, the intake bottom plate 5 has an outward extent radially beyond the bottom edge of the inner shell body; the outer side wall of the inner shell 3 is provided with a first convex ring 37, a second convex ring 38 and a third convex ring 39 from top to bottom, and the air gap layer 16 and the air inlet bottom plate 5 define a first gap layer 161, a second gap layer 162 and a third gap layer 163; the first gap layer 161 corresponds to the PCB region 14, and the second gap layer 162 and the third gap layer 163 correspond to the motor region 13; the air gap layer 16 between the outer side wall of the inner shell 3 and the inner side wall of the outer shell 4 can be divided into three gap layers from top to bottom by the extension part of the air inlet bottom plate 5 and the three convex rings on the outer side wall of the inner shell 3, wherein one gap layer corresponds to the PCB region 14, and the two gap layers correspond to the motor region 13 and are respectively used for noise reduction of the two regions; meanwhile, the supporting and connecting structure between the inner shell 3 and the outer shell 4 is realized, and the stability of the shell structure is ensured.

In some embodiments, as shown in fig. 1, 3, and 7, the air gap layer 16 is filled with a noise reduction sponge 2; in addition, sponge can be filled in the air gap layer 16, so that part of noise can be rebounded, and the transmission of noise is reduced; in combination with the above embodiment, as shown in fig. 3, three gap layer filling sponges may be respectively corresponding to the first sponge layer 21, the second sponge layer 22, and the third sponge layer 23, which respectively correspond to the first gap layer 161 (PCB region 14), the second gap layer 162 (motor region 13), and the third gap layer 163 (motor region 13); because the air flows in the PCB region 14 and the motor region 13 are different, the generated noise is different, because the motor region 13 is motor-driven air, the noise source of the motor-driven air is mainly the air flow generated by the interaction between the motor blades and the air, the PCB region 14 is mainly the noise generated by the interaction between the internal air flow channel structure and the air, and the noise levels of the motor region and the motor region may be different, generally speaking, the noise of the motor region 13 is higher, the second sponge layer 22 and the third sponge layer 23 corresponding to the motor region 13 can be sponges with better sound absorption effect, and the first sponge layer 21 corresponding to the PCB region 14 can be relatively moderate sound absorption sponges; the motor blades in the motor area 13 also separate the air flow in front of the blades and the air flow behind the blades, and the noise degrees of the two air flows are different, so that a second sponge layer 22 and a third sponge layer 23 can be further arranged, and different sound-absorbing sponges can be adopted; finally, the purpose of noise reduction is achieved, and the cost can be reduced.

In some embodiments, as shown in fig. 3 and 4, the inner casing body includes a first inner casing 31 and a second inner casing 32, the first inner casing 31 and the second inner casing 32 are fixedly connected, and a sealing member 33 is disposed at the connection to prevent the air leakage of the inner casing 3; further, the inner shell main body part can also be provided with a first inner shell 31 and a second inner shell 32 which are detachable, so that the installation of an internal PCB control board, a power supply and a motor component is convenient, and the process and the die structure in the production process are also convenient.

In some embodiments, as shown in fig. 3 and 4, in the above embodiments, the first inner casing 31 and the second inner casing 32 may be generally designed as a left part and a right part separated vertically, and they may be combined together by using corresponding inner casing bolt holes 36 and fixedly combined by bolt nuts or self-tapping screws, and generally there are multiple sets, which may be disposed on the casing, or corresponding inner casing bolt holes 36 are separately formed on the outer extension of the casing for the purpose of structural cleaning and stable connection, and in the figures, there are 6 sets of inner casing bolt holes 36 respectively disposed in the upper, middle and lower regions for the purpose of fixed connection; of course, since there is air flow inside, to prevent air leakage, a corresponding seal 33 may be provided at the junction of the left and right portions to reduce air flow leakage.

In some embodiments, as shown in fig. 4 and 5, the housing 4 includes an upper housing 42 and a lower housing 41, and the lower housing 41 is fixedly connected to the air intake bottom plate; the upper shell 42 is fixedly connected with the inner shell main body; in order to form the air gap layer 16 and to ensure the fixation of the outer shell 4, the outer shell 4 and the inner shell 3 may be generally fixedly connected together; specifically, for convenience of disassembly and assembly, the housing 4 may be divided into an upper housing 42 and a lower housing 41; the lower housing 41 may be fixedly connected to the air intake bottom plate 5, and may adopt a plurality of pairs, 6 pairs as shown in the figure, corresponding to the third bolt holes 45 and the third connecting holes 54 shown in fig. 5; the upper shell 42 may be connected to the inner shell body by a snap, for example, in some embodiments, the upper shell may be fixedly connected to the first, second and third beads 37, 38 and 39 shown in fig. 4; or a pair connection of the first connection hole 43 of the upper case 42 of fig. 5 and the first bolt hole 34 of the inner case main body of fig. 4, 2 pairs in the drawing; and the bolt holes and the connecting holes are fixedly combined through bolt nuts or self-tapping screws.

In the above mentioned inner housing main body in the above embodiments, in the case that the inner housing main body is designed as the first inner housing 31 and the second inner housing 32, the corresponding connection with the outer housing 4 may be disposed on the first inner housing 31 or the second inner housing 32, besides the inner housing main body, and the related embodiments are not repeated.

The utility model also relates to a hand dryer, as shown in fig. 1, 2 and 8, comprising the casing structure as above, and a motor assembly arranged in the inner casing 3, so that the motor assembly drives external air to enter the inner casing 3 from the air inlet 12 and to be discharged from the air outlet 15.

In some embodiments, as shown in fig. 1, 2 and 8, the bottom of the outer casing 4 is lower than the bottom of the inner casing 3, so that an air intake area 11 is defined by the bottom of the outer casing 4 and the bottom of the inner casing 3, and after the outside air enters the air intake area 11, the outside air enters the inner casing 3 through an air inlet 12.

In some embodiments, as shown in fig. 9, the air intake area 11 is provided with an air intake assembly 6, the air intake assembly 6 includes a main body base 61 and a filter assembly 62, and the filter assembly 62 is fixedly arranged between the bottom of the inner shell 3 and the main body base 61; the host base 61 is downward relative to the bottom of the shell 4, so that the host base 61 and the bottom edge of the shell 4 have an air inlet gap; outside air enters the air inlet area 11 from the air inlet gap, passes through the filter assembly 62, and enters the motor area 13 from the air inlet 12.

Typically, the filter assembly 62 may be a filtered HEPA.

In some embodiments, a wire pressing plate is further arranged between the inner shell 3 and the outer shell 4, the part of the external main power line extending to the space between the inner shell 3 and the outer shell 4 is stripped into an internal lead, and the wire pressing plate presses the internal lead onto the outer wall of the inner shell 3; further, external power cord can demonstrate the power cord support part that sets up at the air inlet bottom plate and arrange, later up arrange along 3 outer walls of inner shell, because the clearance between inner shell 3 and the shell 4 is little, the power cord further up arranges and has the difficulty, then can peel off the power cord, exposes built-in conductor to with the line ball board with built-in conductor pressfitting on 3 outer walls of inner shell, can further reduce the volume of whole hand dryer.

In some embodiments, as shown in fig. 1, 2 and 8, the air dryer includes a housing structure as described above, and a motor assembly disposed in the motor area 13, a PCB assembly disposed in the PCB area 14, so that the motor assembly drives external air to enter from the air inlet 12, pass through the motor assembly and the PCB assembly, and be discharged from the air outlet 15, according to an embodiment of the housing structure, the air entering from the air inlet 12 passes through the motor assembly in the motor area 13, enters the PCB area 14, carries away heat of the PCB assembly in the PCB area 14, and is finally discharged from the air outlet 15 for drying hands; the specific PCB assembly comprises a PCB control board, a power supply and the like which are all arranged in the PCB area 14, and corresponding power supply lines and the like can be arranged between the inner shell 3 and the outer shell 4 and are guided to the lower end of the outer shell 4 to be connected with external power supply; generally, for the arrangement of the air outlet 15, the air outlet 15 is formed at the upper portion of the main body case 1 by sealing the upper portions of the inner case 3 and the outer case 4 with an opening respectively.

In some embodiments, as shown in fig. 1, 2 and 9, the bottom of the outer shell is lower than the bottom of the inner shell, so as to define an air intake area 11 by the bottom of the outer shell 4 and the bottom of the inner shell 3, and after entering the air intake area 11, the outside air enters the motor area 13 through the air inlet 12; as can be seen from the figure, the outer shell 4 is longer than the inner shell 3, that is, the edge of the outer shell 4 is lower than the bottom of the inner shell 3, so that an air inlet area 11 can be defined by combining the bottom of the inner shell 3 and the part of the shell body of the outer shell 4 which is longer than the inner shell 3, and the air inlet area is arranged at the lower end of an air inlet 12 at the bottom of the inner shell 3, thereby facilitating adjustment of air inlet; meanwhile, through holes can be formed in the part of the shell body, which is longer than the inner shell 3, of the bottom outer shell 4 for the entrance of external air; therefore, the integral hand dryer can be conveniently placed in areas such as an office table, a wash platform and the like, is convenient to carry and use, and only needs to be placed on the table when in use, and the bottom of the shell 4 is in contact with the table.

In further combination with the above embodiments having the air intake bottom plate 5, the air intake 12 is located on the air intake bottom plate 5, and the air intake area 11 is defined by the air intake bottom plate 5 and the housing 4;

in further combination with the embodiments described above having the lower housing 41, the intake air region 11 is defined by the intake air base plate 5 and the lower housing 41.

In some embodiments, as shown in fig. 9, the air intake area 11 is provided with an air intake assembly 6, the air intake assembly 6 includes a main frame base 61 and a filter assembly 62, and the filter assembly 62 is fixedly arranged between the bottom of the inner shell and the main frame base 61; the host base 61 is downward relative to the bottom of the shell 4, so that the host base 61 and the bottom edge of the shell 4 have an air inlet gap; the external air enters the air inlet area 11 from the air inlet gap, passes through the filtering component 62 and enters the motor area 13 from the air inlet 12; specifically, the air inlet area can be provided with the filter assembly 62 for filtering inlet air, ensuring the cleanness of hand drying airflow, protecting internal components and prolonging the service life; meanwhile, an air inlet gap is formed between the air inlet gap and the bottom of the outer shell 4 through the host base 61, air enters from the air inlet gap, and the host base 61 can be fixed to the bottom of the inner shell, so that the filtering component 62 can be fixed between the air inlet gap and the bottom of the outer shell, the structure is simple, and the host base can be detached at the same time, and the filtering component 62 can be conveniently replaced; of course, in some embodiments with the air intake bottom plate 5, the main body base 61 may be fixedly connected with the air intake bottom plate 5 and may define the filter handkerchief 62; in addition, with some embodiments of the lower housing 41, the host base 61 has an air inlet gap with the bottom edge of the lower housing 41.

In addition, host computer base 61 still can set up the slipmat, only needs to place hand dryer on the table during the use, and host computer base 61 contacts with the table, when placing the hand dryer at the desktop, places its during operation and slides, perhaps topples over.

It should be noted that the existing hand dryer is generally a wall-hanging type, is arranged on a wall outside a toilet and is not portable, but the hand dryer can be conveniently carried and placed on a desktop, such as an office environment, so that the hand dryer can be used for drying hands after being used for washing hands at a public table in a tea room and the tea room, and is low in noise and very suitable for the office environment.

In some embodiments, as shown in fig. 1, the air outlet 15 is connected to the air guiding assembly 7, so as to guide the airflow at the air outlet 15 from the air guiding assembly 7 into a hand drying airflow for drying hands; as shown in the figure, in order to facilitate hand drying operation, the air guide component 7 is a channel arranged transversely on two sides and can be provided with a blade to guide air to flow out, and the air volume is large; when the drying machine is used, only wet hands are needed to be placed at the lower parts of the two sides respectively, and the air can be blown out to dry the hands quickly.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

Claims (11)

1. A casing structure of a hand dryer, characterized by comprising a main machine casing (1), wherein the main machine casing (1) is provided with an inner casing (3) and an outer casing (4); the inner shell (3) is accommodated in the outer shell (4) and has a gap with the outer shell (4); the main machine shell (1) is provided with an air inlet (12) and an air outlet (15); the motor component arranged in the inner shell (3) drives external air to enter from the air inlet (12) and discharge from the air outlet (15).

2. The casing structure of the hand dryer according to claim 1, wherein the inner casing (3) has an inner casing main body, an air intake bottom plate (5) connected to the bottom of the inner casing main body is provided at the bottom of the inner casing main body, and the air intake (12) is provided on the air intake bottom plate (5); the outer shell (4) is fixedly connected with the inner shell (3) through an air inlet bottom plate (5).

3. Case structure for a hand dryer according to claim 1, characterized in that the outer side wall of the inner case (3) is provided with at least one bead.

4. The casing structure of a hand dryer according to claim 1, characterized in that the gap between the inner casing (3) and the outer casing (4) is filled with a noise-reducing sponge (2).

5. A casing structure for a hand dryer according to claim 1, characterized in that the inner casing body comprises a first inner casing (31) and a second inner casing (32), the first inner casing (31) and the second inner casing (32) being fixedly connected, and a seal (33) being provided at the connection.

6. The casing structure of a hand dryer according to claim 2, characterized in that the casing (4) comprises an upper casing (42) and a lower casing (41), the lower casing (41) being fixedly connected to the air intake bottom plate (5); the upper shell (42) is fixedly connected with the inner shell main body.

7. Hand dryer, characterized in that it comprises a housing structure according to any of claims 1-6, and a motor assembly arranged in the inner casing (3) so that the motor assembly drives outside air from the air inlet (12) into the inner casing (3) and out through the air outlet (15).

8. Hand dryer according to claim 7, characterized in that the bottom of the outer casing (4) is located below the bottom of the inner casing (3) so that an air intake area (11) is defined by the bottom of the outer casing (4) and the bottom of the inner casing (3), and after entering the air intake area (11), the outside air enters the inner casing (3) through the air intake opening (12).

9. Hand dryer according to claim 8, characterized in that the air intake area (11) is provided with an air intake component (6), the air intake component (6) comprises a main machine base (61) and a filter component (62), the filter component (62) is fixedly arranged between the bottom of the inner shell (3) and the main machine base (61); the host base (61) is lower relative to the bottom of the shell (4) so that an air inlet gap is formed between the host base (61) and the bottom edge of the shell (4); outside air enters the air inlet area (11) from the air inlet gap, passes through the filtering component (62), and enters the motor area (13) from the air inlet (12).

10. The hand dryer as claimed in claim 7, characterized in that the air outlet (15) is connected to the air guiding assembly (7) for guiding the air flow from the air outlet (15) by the air guiding assembly (7) into the hand drying air flow for drying the hands.

11. Hand dryer according to claim 7, characterized in that a tension disc is arranged between the inner casing (3) and the outer casing (4), the part of the external main power line extending between the inner casing (3) and the outer casing (4) is stripped off into the inner conductor, and the tension disc presses the inner conductor against the outer wall of the inner casing (3).

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