CN218572090U - Hand dryer - Google Patents

Abstract

The utility model discloses a hand dryer, which comprises a shell, wherein the shell is provided with a first air inlet and a first air outlet, a first cavity and a second cavity which are distributed left and right are arranged in the shell, the first cavity is communicated with the first air inlet, a third cavity which is positioned at the front side of the second cavity is also arranged in the shell, a motor is arranged in the third cavity, and the first cavity, the second cavity, the motor air inlet, the motor air outlet, the third cavity and the first air outlet are sequentially communicated; the air current need get into different cavities through turning to many times in the casing, and the extension wind channel has prolonged the transfer path of noise promptly, can greatly reduce the noise, and through installing the circuit board in first cavity, takes away the heat that the circuit board produced through the air current, not only is favorable to the heat dissipation of circuit board, can reduce the energy consumption of follow-up air current heating moreover.

Description

Hand dryer

Technical Field

The utility model relates to a hand drying device technical field more exactly relates to a hand dryer.

Background

Hand dryer is a sanitary ware electrical apparatus for drying both hands or drying both hands in bathroom, and the hand dryer mainly relies on high-speed hot air flow to dry the hand, because of the high-speed motion of air current and motor self can produce considerable noise, the hand dryer that uses at present increases the purpose that reaches the noise reduction like sound insulation or sound absorbing material such as noise elimination cotton in through the wind channel, and not only the cost is higher, and noise elimination cotton can increase the windage, influence the circulation of air current, and then influence the performance of hand dryer.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a hand dryer, realize falling through the extension wind channel and make an uproar, it is less to the influence of air current.

The utility model provides a hand dryer, which comprises a housin, the casing is provided with first air intake and first air outlet, first cavity and the second cavity that distributes about being provided with in the casing, first cavity and first air intake intercommunication, still be provided with the third cavity that is located second cavity front side in the casing, install the motor in the third cavity, first cavity, second cavity, motor air intake, motor air outlet, third cavity, first air outlet communicate according to the preface.

Among this technical scheme, be left right side distribution through setting up first cavity and second cavity in the casing, third cavity and second cavity are front and back distribution in the casing, constitute a plurality of cavitys that need turn to the entering, prolonged the wind channel as far as possible in limited space to when making the noise outwards transmit in the wind channel, prolonged the transfer path of noise simultaneously, the noise obtains effective attenuation in the transfer process, can greatly reduce the noise of transmission to the wind channel outside.

As an improvement, the first air inlet and the first air outlet are located at the lower end of the shell, and the first air outlet is located on the front side of the first air inlet. In the technical scheme, the first air inlet and the first air outlet are both positioned at the lower end of the shell, so that the air duct can be effectively prolonged, the space is reasonably distributed, and the increase of the volume of the hand dryer can be avoided; first air outlet carries out the drying to user's hand through airing exhaust, and first air outlet is located first air intake front side, and the user of being more convenient for can aim at first air outlet fast.

As an improvement, the first air inlet is connected with an air inlet cavity, the air inlet cavity is arranged below the first cavity and the second cavity, the first cavity is provided with a second air inlet, and the air inlet cavity is communicated with the first cavity through the second air inlet.

In the technical scheme, airflow enters the air inlet cavity through the first air inlet and then enters the first cavity through the second air inlet, the air inlet cavity is located below the first cavity and the second cavity, namely the first cavity is located at the side position of the air inlet cavity, and partial airflow located below the second cavity cannot directly enter the first cavity, so that the flow path of the airflow can be prolonged, and noise is reduced.

As an improvement, a first guide plate is arranged below the second cavity of the air inlet cavity, a step is arranged between the first guide plate and the second air inlet of the air inlet cavity, and partial air flow enters the first cavity from the side surface of the second air inlet through the step.

In this technical scheme, the air current of air inlet intracavity gets into through first air intake, can only leave through the second air intake, and the part air current that is located the second cavity below can shift to first cavity below under the effect of first guide plate, can plan the flow orbit of part air current, through be provided with the step between first guide plate and second air intake, and part air current can pass through step department and get into in the first cavity from second air intake side, reduces the influence to the air current flows, and the air current motion is more smooth and easy.

As the improvement, the air conditioner also comprises a flow distribution channel which is communicated with the third cavity and the first air outlet. Among this technical scheme, can collect the air current through setting up the reposition of redundant personnel runner for first air outlet air-out is more even, uses experience to feel better.

As an improvement, the axis of the flow dividing channel extends up and down, and the axis of the motor extends back and forth. In the technical scheme, the distribution directions of the flow distribution channels and the motor are set, so that the air flow in the second cavity moves forwards into the motor and enters the third cavity from the air outlet of the motor, the air flow in the third cavity flows downwards under the action of the flow distribution channels and is discharged from the first air outlet at the bottom of the shell, the air flow channels are prolonged, and the noise is reduced.

As an improvement, a second guide plate is arranged between the flow dividing channel and the first air outlet, and the second guide plate is in a herringbone shape. Among this technical scheme, first air outlet is horizontal in the casing below, and the reposition of redundant personnel runner then sets up in the casing front side between two parties, and through chevron shape second guide plate, the air-out efficiency of first air outlet is higher and the air-out is more even.

As an improvement, a heating assembly is arranged in the flow dividing flow channel; the heating components are distributed in the flow dividing flow channel in a cross shape. In the technical scheme, the air flow is heated by the heating assembly, so that the hot air drying effect is better and the efficiency is higher; the cross-shaped heating assembly heats the air flow more uniformly, and the use experience is improved.

As the improvement, still include the circuit board, the circuit board is installed in first cavity, and the heating element spare on the circuit board is towards first cavity rear side.

The circuit board is in the use, the heating element spare that distributes on the circuit board can produce the heat, the performance of circuit board can be influenced to the high temperature, in this technical scheme, through setting up the circuit board in first cavity, second air intake and second cavity all are located the casing rear side, the air current flow path in the first cavity is located first cavity rear side promptly, heating element spare is towards first cavity rear side, the heat can flow along with the air current, get into in proper order in second cavity and the third cavity, and the air current temperature in the first cavity is lower, be favorable to the quick heat dissipation of circuit board, the life of extension circuit board, and also be favorable to the heating of follow-up air current, reduce the heating energy consumption, the energy can be saved.

As an improvement, the back of the shell is provided with a wall hanging piece, and the hand dryer is fixed on a wall surface or a support through the wall hanging piece. The hand dryer provided by the technical scheme has the advantages that the wall hanging piece is arranged on the back of the hand dryer, the hand dryer can be fixed on the wall for use, can be fixed on the support of the adaptation, is placed on a desktop isoplanar for use, is more in use scene, and meets more use requirements.

According to the hand dryer provided by the disclosure, the shell is divided into the plurality of cavities, airflow needs to be turned for multiple times in the shell to enter different cavities, an air channel is greatly prolonged in a limited space, namely, a transmission path of noise is prolonged, the noise is effectively attenuated in a transmission process, and the noise transmitted to the outside of the air channel can be greatly reduced; and the circuit board is arranged in the first cavity, and the heat generated by the circuit board is taken away by the airflow, so that the heat dissipation of the circuit board is facilitated, the energy consumption of subsequent airflow heating can be reduced, and the energy is saved.

Drawings

Fig. 1 is a schematic perspective view of a hand dryer according to the present disclosure.

Fig. 2 is an exploded view of a hand dryer according to the present disclosure.

Fig. 3 is a schematic side view of a hand dryer according to the present disclosure.

Fig. 4 isbase:Sub>A schematic cross-sectional structure view along the directionbase:Sub>A-base:Sub>A in fig. 3 according to the present disclosure.

FIG. 5 is a schematic view of the gas flow of FIG. 4 according to the present disclosure.

Fig. 6 is a schematic cross-sectional structure view in the direction B-B in fig. 3 according to the present disclosure.

FIG. 7 is a schematic view of the gas flow of FIG. 6 of the present disclosure.

FIG. 8 is a schematic cross-sectional view taken along the direction C-C in FIG. 3 according to the present disclosure.

FIG. 9 is a schematic view of the gas flow of FIG. 8 according to the present disclosure.

Fig. 10 is a schematic rear view of a hand dryer according to the present disclosure.

Figure 11 is a schematic perspective view of a hand dryer belt support according to the present disclosure.

Fig. 12 is a perspective view of a support in the present disclosure.

Shown in the figure: 1. a housing; 11. a first air inlet; 12. a first air outlet; 13. a first cavity; 131. a second air inlet; 132. a second air outlet; 14. a second cavity; 15. a third cavity; 16. an air inlet cavity; 161. a first baffle; 162. a step; 17. a flow dividing channel; 18. a heating assembly; 19. a second baffle; 2. a motor; 3. a circuit board; 4. winding a wire groove; 41. an arc-shaped bulge; 5. a wall hanging piece; 6. a support; 61. and a fastener.

Detailed Description

In order that the present application may be better understood, various aspects of the present application will be described in greater detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "containing," "includes" and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1 to 9, the application discloses a hand dryer, including casing 1, casing 1 is provided with first air intake 11 and first air outlet 12, as shown in fig. 4 and 6, be provided with first cavity 13 and second cavity 14 that control the distribution in the casing 1, first cavity 13 and first air intake 11 intercommunication, still be provided with the third cavity 15 that is located second cavity 14 front side in the casing 1, install motor 2 in the third cavity 15, first cavity 13, second cavity 14, motor 2 air intake, motor 2 air outlet, third cavity 15, first air outlet 12 communicate in proper order.

As shown in fig. 2, 4 and 5, under the action of the motor 2, the airflow flows upward from the first air inlet 11 and enters the first cavity 13 on the right side, flows through the first cavity 13 and needs to turn left and enters the second cavity 14 on the left side through the second air outlet 132, flows forward from the second cavity 14 into the motor 2, enters the third cavity 15 through the air outlet of the motor 2, and is finally discharged from the first air outlet 12 and acts on the hand of the user; the first cavity 13 and the second cavity 14 are distributed in the left and right of the shell 1, the second cavity 14 and the third cavity 15 are distributed in the front and back of the shell 1, so that a plurality of cavities needing to be turned to enter are formed, the air duct is prolonged as far as possible in a limited space, and therefore when noise is transmitted outwards in the air duct, the transmission path of the noise is prolonged, the noise is effectively attenuated in the transmission process, and the noise transmitted to the outside of the air duct can be greatly reduced.

As shown in fig. 2, the first air inlet 11 and the first air outlet 12 are located at the lower end of the casing 1, and the first cavity 13, the second cavity 14 and the third cavity 15 are all located at the upper end of the casing 1, so that the air flow needs to enter the air inlet cavity 16, the first cavity 13, the second cavity 14 and the third cavity 15 from the lower part of the hand dryer in sequence and then return to the lower part of the hand dryer, the volume of the hand dryer is limited, the air duct arrangement mode of the embodiment can effectively prolong the air duct, and the space is reasonably distributed, so that the increase of the volume of the hand dryer is avoided; the first air outlet 12 dries the hands of the user through air exhaust, and the first air outlet 12 is located on the front side of the first air inlet 11, so that the user can conveniently stretch hands to align at the first air outlet 12.

As shown in fig. 2, 4 and 5, the first air inlet 11 is connected with an air inlet chamber 16, the air inlet chamber 16 is disposed below the first chamber 13 and the second chamber 14, the first chamber 13 is provided with a second air inlet 131, the air inlet chamber 16 is communicated with the first chamber 13 through the second air inlet 131, the air flow flows upward through the first air inlet 11 and enters the air inlet chamber 16, and then flows upward through the second air inlet 131 and enters the first chamber 13, the first chamber 13 is located at a side position of the air inlet chamber 16, and the air flow close to the second chamber 14 cannot directly enter the first chamber 13, so that a part of the air flow path can be extended, and noise can be reduced; as shown in the figure 4 of the drawings,

as shown in fig. 2, 4 and 5, the second air inlet 131 is of an L-shaped structure, so that the air flow close to one side of the second cavity 14 can enter the first cavity 13 through the second air inlet 131 on the side surface, and the influence on the air flow is reduced; a first guide plate 161 is arranged below the second cavity 14 of the air inlet cavity 16, airflow in the air inlet cavity 16 enters through the first air inlet 11 and can only leave through the second air inlet 131, part of airflow below the second cavity 14 can be transferred to the lower part of the first cavity 13 under the action of the first guide plate 161, a step 162 is arranged between the first guide plate 161 and the second air inlet 131 of the air inlet cavity 16, and part of airflow can enter the first cavity 13 from the side surface of the second air inlet 131 through the step 162, so that the influence on the airflow flow is reduced, and the airflow moves more smoothly; grilles are arranged at the first air inlet 11, the second air inlet 131 and the second air outlet 132, so that the air flow can be planned.

As shown in fig. 2, 6 and 7, the hand dryer further includes a flow dividing channel 17, the flow dividing channel 17 communicates with the third cavity 15 and the first air outlet 12, an axis of the flow dividing channel 17 extends up and down, an axis of the motor 2 extends back and forth, the flow dividing channel 17 is in a vertical structure, the flow dividing channel 17 is disposed at a central position of the front side of the housing 1, the airflow flows from the front side of the motor 2 into the third cavity 15, the airflow in the third cavity 15 is discharged from the first air outlet 12 through the flow dividing channel 17, the flow dividing channel 17 can collect the airflow, and the air outlet is more uniform; as shown in fig. 5, a second flow guide plate 19 is disposed between the diversion flow channel 17 and the first air outlet 12, the second flow guide plate 19 is in a shape of a herringbone, and the airflow is uniformly dispersed to both sides by the action of the herringbone second flow guide plate 19, so as to improve the air outlet efficiency of the first air outlet 12.

As shown in fig. 2, 4, 8 and 9, a heating assembly 18 is arranged in the diversion flow channel 17, and the airflow is heated by the heating assembly 18, so that the drying effect of the hot air is better and the efficiency is higher; the heating elements 18 are distributed in the diversion flow channel 17 in a cross shape, so as to divide the diversion flow channel 17 into four channels, the cross-shaped heating elements 18 heat the air flow more uniformly, and in this embodiment, the heating elements 18 include but are not limited to electric heating wires.

As shown in fig. 2 and fig. 3 to 7, the hand dryer further comprises a circuit board 3, the circuit board 3 is installed in the first cavity 13, in the using process of the circuit board 3, the heating components distributed on the circuit board 3 can generate heat, for example, a MOS tube used for driving the motor 2, the performance of the circuit board 3 can be affected by overhigh temperature, the airflow flowing path in the first cavity 13 is located on the rear side of the first cavity 13, the heating components on the circuit board 3 face the rear side of the first cavity 13, the heat can flow along with the airflow and sequentially enter the second cavity 14 and the third cavity 15, and the temperature of the airflow in the first cavity 13 is lower, so that the rapid heat dissipation of the circuit board 3 is facilitated, the service life of the circuit board 3 is prolonged, the heating of subsequent airflow is facilitated, the heating energy consumption is reduced, and the energy is saved.

As shown in fig. 4 to 9, the present disclosure provides a hand dryer with an overall airflow flow path: under the action of the motor 2, airflow around the hand dryer flows upwards from the first air inlet 11 at the bottom of the hand dryer and enters the air inlet cavity 16, airflow on the right side in the air inlet cavity 16 directly passes through the second air inlet 131 and flows upwards to enter the first cavity 13 on the right side, airflow on the left side in the air inlet cavity 16 flows towards the right side under the guiding action of the first guide plate 161, and partial airflow can flow upwards from the side surface of the second air inlet 131 through the step 162 and enters the first cavity 13; the airflow in the first cavity 13 passes through the second air outlet 132 to the left side into the second cavity 14, the airflow in the second cavity 14 flows to the front side of the casing 1 and passes through the motor 2 to the third cavity 15, the airflow in the third cavity 15 is collected in the central diversion flow channel 17, the airflow flows downwards in the diversion flow channel 17, and is guided by the second guide plate 19 to the first air outlet 12 at the bottom of the casing 1 to be discharged.

It should be noted that, in the hand dryer provided by this embodiment, the first cavity 13 is located on the right side of the casing 1, and the second cavity 14 and the third cavity 15 are located on the left side of the casing 1, however, the first cavity 13 may be disposed on the left side of the casing 1, and the second cavity 14 and the third cavity 15 are located on the right side of the casing 1, and the two principles are practically the same, which belongs to the protection scope of the present invention and are not described again.

As shown in fig. 10, the winding slot 4 is formed in the back of the housing 1, the winding slot 4 is formed by the concave of the back plate of the housing 1, the winding slot 4 is communicated with the first cavity 13, so that circuits in the housing 1 can be accommodated in the winding slot 4 through the first cavity 13, the back of the housing 1 is relatively hidden, and the winding slot 4 is arranged in the back of the housing 1, so that the appearance is better; and spiral groove 4 is the runway type, and spiral groove 4 both ends are provided with arc arch 41 and are used for twining the cable, accomodate and use more convenient.

As shown in fig. 1 and 10, the back of the shell 1 is provided with an indent to accommodate a wall hanging piece 5, the wall hanging piece 5 is arranged away from an open wire slot 4, the hand dryer is fixed on a wall surface or a support 6 through the wall hanging piece 5, the wall surface or the support 6 is provided with a corresponding buckling piece 61, the buckling piece 61 is buckled and matched with the wall hanging piece 5, and the fixing structure is hidden in the indent of the back of the shell 1, so that the appearance is not influenced; as shown in fig. 10, 11 and 12, the embodiment can also provide a support 6, cover plates adapted to the winding groove 4 are disposed on two sides of the support 6, the support 6 is provided with a buckling piece 61 adapted to the wall hanging piece 5, the buckling piece 61 is inserted into the wall hanging piece 5 to be fixed, the cover plate covers the winding groove 4, the appearance is better, the vertical hand dryer can be placed on a desktop or other planes for use, the number of use scenes is large, and more use requirements are met.

According to the hand dryer provided by the disclosure, the shell 1 is divided into the plurality of cavities, airflow enters different cavities through multiple steering in the shell 1, an air channel is greatly prolonged in a limited space, namely, a transmission path of noise is prolonged, the noise is effectively attenuated in a transmission process, and the noise transmitted to the outside of the air channel can be greatly reduced; and through installing circuit board 3 in first cavity 13, take away the heat that circuit board 3 produced through the air current, not only be favorable to the heat dissipation of circuit board 3, can reduce the energy consumption of follow-up air current heating moreover, the energy can be saved.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a hand dryer, includes casing (1), casing (1) is provided with first air intake (11) and first air outlet (12), its characterized in that, be provided with first cavity (13) and second cavity (14) that control the distribution in casing (1), first cavity (13) and first air intake (11) intercommunication, still be provided with third cavity (15) that are located second cavity (14) front side in casing (1), install motor (2) in third cavity (15), first cavity (13), second cavity (14), motor (2) air intake, motor (2) air outlet, third cavity (15), first air outlet (12) communicate according to the preface.

2. A hand dryer according to claim 1, wherein the first air inlet (11) and the first air outlet (12) are located at the lower end of the housing (1), and the first air outlet (12) is located at the front side of the first air inlet (11).

3. A hand dryer according to claim 1 or 2, wherein an air inlet chamber (16) is connected to the first air inlet (11), the air inlet chamber (16) is arranged below the first cavity (13) and the second cavity (14), the first cavity (13) is provided with a second air inlet (131), and the air inlet chamber (16) is communicated with the first cavity (13) through the second air inlet (131).

4. A hand dryer according to claim 3, wherein the air inlet chamber (16) is provided with a first baffle (161) below the second chamber (14), and the air inlet chamber (16) is provided with a step (162) between the first baffle (161) and the second air inlet (131), and the step (162) allows a part of the air flow to enter the first chamber (13) from the side of the second air inlet (131).

5. A hand dryer according to claim 1, further comprising a flow distribution channel (17), the flow distribution channel (17) communicating the third cavity (15) with the first outlet opening (12).

6. A hand dryer according to claim 5, wherein the axis of the flow dividing channel (17) extends in an up-down direction and the axis of the motor (2) extends in a front-rear direction.

7. A hand dryer according to claim 6, wherein a second deflector (19) is arranged between the divergent flow channel (17) and the first air outlet (12), the second deflector (19) being in the shape of a chevron.

8. A hand dryer as claimed in claim 5, characterized in that a heating assembly (18) is arranged in the flow dividing channel (17); the heating components (18) are distributed in the flow distribution flow passage (17) in a cross shape.

9. A hand dryer according to claim 1, further comprising a circuit board (3), wherein the circuit board (3) is mounted in the first cavity (13), and a heating element on the circuit board (3) faces the rear side of the first cavity (13).

10. A hand dryer as claimed in claim 1, characterized in that a wall hanger (5) is provided at the back of the housing (1), the hand dryer being secured to a wall or support (6) by means of the wall hanger (5).

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