Household mute hand dryer

Abstract

The utility model discloses a household mute hand dryer. The household mute hand dryer comprises a shell, silencing cotton, a filter screen, an air outlet pipe nozzle, a heating system and a fan. The shell is provided with an air inlet cavity and a hidden cavity; the air inlet cavity is located at an air inlet of the shell, sound absorption cotton is arranged in the air inlet cavity, the hidden cavity is in an empty groove shape, is concave inwards and is located on the back face of the shell and corresponds to a switch on a wall, the filter screen is arranged at the air inlet position of the air outlet pipe nozzle, and a gap is formed between the filter screen and the shell to form a sound attenuation cavity. A heating system and a fan are arranged in the air outlet pipe nozzle according to an air inlet path; and an air outlet of the air outlet pipe nozzle is flat or round. According to the technical scheme, the design of the household mute hand dryer is optimized, and noise is reduced.

Description

Technical Field

[0001] The utility model relates to a daily necessities, in particular to a household silent hand dryer for drying hands. Background Art

[0002] The household silent hand dryer belongs to a special tool for drying hands and is widely used in public or household places; the current household silent hand dryer uses a high-speed fan to generate a fast air volume to play a drying role, and the defect of the existing air duct design is that it generates a large noise, which affects the use of the product. Content of the Utility Model

[0003] The purpose of the utility model is to provide a household silent hand dryer, and the technical problem to be solved is: to optimize the design of the household silent hand dryer and reduce the noise volume.

[0004] The household silent hand dryer includes a housing, sound-absorbing cotton, a filter screen, an air outlet nozzle, a heating system, and a fan; the housing has an air inlet cavity and a hidden cavity; the air inlet cavity is located at the air inlet of the housing, and sound-absorbing cotton is arranged in the air inlet cavity. The hidden cavity is recessed inward in a hollow groove shape and is located on the back of the housing corresponding to the switch on the wall. The filter screen is arranged at the air inlet position of the air outlet nozzle, and there is a gap between the filter screen and the housing to form a sound-absorbing cavity. The air outlet nozzle has a heating system and a fan according to the air inlet path; the air outlet of the air outlet nozzle is flat or circular.

[0005] The middle upper part of the surface of the housing facing the user is a U-shaped structure, and the sound-absorbing cotton and the air outlet nozzle are located at the lower part of the U-shaped structure.

[0006] The air outlet is arranged outward relative to the air inlet.

[0007] The sound-absorbing cotton is placed in a sound-absorbing frame, the sound-absorbing frame has a handle, and the sound-absorbing frame is placed in the housing in a drawable manner.

[0008] The housing has a tray and an upper cabinet. The tray is an inverted L-shaped structure, and the upper cabinet is a square structure. The overall structures of the tray and the upper cabinet are aligned. The tray has mounting holes at the bottom position of the side wall, and the upper cabinet has corresponding mounting protrusions at the mounting hole positions.

[0009] The sound-absorbing frame has a buckle, and the back panel of the upper cabinet has a placement cavity at the corresponding position. The sound-absorbing frame is placed in the placement cavity and is engaged with the buckle at this position.

[0010] The back panel has an installation platform at the position where it cooperates with the air outlet nozzle. The surface of the installation platform that cooperates with the air outlet nozzle is an inclined surface, and the top surface of the installation platform is recessed inward to form a semi-circular arc surface that fits with the outer wall of the air outlet nozzle.

[0011] The installation platform has a plurality of grooves at the top of the semi-circular surface, and the air outlet nozzle has corresponding protrusions at the corresponding positions.

[0012] The air outlet nozzle has fixed wings arranged symmetrically left and right at the air outlet position. The two sides of the fixed wing have protruding mounting posts at different positions, and the mounting posts are configured with screws to be fixed to the housing.

[0013] The beneficial effects of the present utility model are as follows: By forming a gap between the filter screen and the housing, on the one hand, it can be used as an air duct to allow the air flowing in from the air inlet to enter the filter screen through this air duct; on the other hand, this gap can form a silent cavity in cooperation with the inner wall of the housing, thus forming a second silent measure, while the sound-absorbing cotton forms the first silent measure. By designing the air outlet to be flat or circular, the practicability of the product is improved. The design of the extractable sound-absorbing frame facilitates the replacement of the sound-absorbing frame. The design of the hidden cavity on the housing facilitates hiding the switch or wire on the wall in this cavity, thus making the product closer to the wall and increasing the stability of the product. Description of the Drawings

[0014] Figure 1 is a three-dimensional schematic diagram of a household silent hand dryer;

[0015] Figure 2 is a schematic diagram of another angle of the household silent hand dryer;

[0016] Figure 3 is an exploded schematic diagram of the household silent hand dryer;

[0017] Figure 4 is a schematic diagram of the benefit box;

[0018] Figure 5 is a schematic diagram of the air outlet nozzle;

[0019] Figure 6 is a schematic diagram of the back panel of the housing;

[0020] Figure 7 is a schematic diagram of a household silent hand dryer with a circular air outlet;

[0021] In the figure

[0022] 1. Housing, 11. Tray, 111. Mounting hole, 12. Upper cabinet, 121. Mounting protrusion, 122. Air inlet, 123. Air outlet, 124. Hidden cavity, 125. Back panel, 1251. Placing cavity, 1252. Installation platform, 1253. Groove;

[0023] 21. Sound-absorbing frame, 22. Sound-absorbing cotton;

[0024] 3. Filter screen;

[0025] 4. Air outlet nozzle, 41. Protrusion, 42. Fixed wing, 421. Mounting post. Detailed implementation mode

[0026] Please refer to Figures 1 to 6 , the household silent hand dryer in the figure is designed with a housing 1, a sound-absorbing structure, a filtering structure, an air outlet structure, a heating and air guiding component. The design innovation of this case is to optimize and innovate the household silent hand dryer as a whole, and optimize the shape of the components and the mutual assembly relationship between the components for the noise problem.

[0027] The housing 1 in the figure is designed to be divided into two components, a tray 11 and an upper cabinet 12, and the overall structure is aligned. The tray 11 is in an L-shaped structure as a whole, which is convenient for collecting the water on the user's hand. It is assembled with the upper cabinet 12 as a whole to form a U-shaped structure for the user's hand to use. The tray 11 has a mounting hole 111 structure at the bottom of the side wall, which is convenient for the cooperation of a corresponding mounting protrusion 41121 of the upper cabinet 12. The tray 11 can be used as a spare part. The upper cabinet 12 is in a square structure as a whole. The main components of the household silent hand dryer are concentrated in the upper cabinet 12. The upper cabinet 12 is designed with an air inlet 122 and an air outlet 121 on the surface facing the tray 11, that is, the top surface. The above air outlet 121 is closer to the outside and closer to the user relative to the air inlet 122. A sound-absorbing frame 21 is installed at the position of the air inlet 122, and sound-absorbing cotton 22 is placed in the sound-absorbing frame 21. The sound-absorbing frame 21 and the sound-absorbing cotton 22 form a sound-absorbing structure. The air outlet 121 of the air outlet nozzle 4, that is, the air outlet 121, is designed to be flat to increase the air outlet area. In actual application, the air outlet 121 can also be designed to be circular, such as Figure 7 shown. Below the air inlet 122 is the air inlet cavity structure, which enters the interior of the air outlet nozzle 4 through the filter net 3. The interior of the upper cabinet 12 is hollow to facilitate the placement of other components. A hidden cavity 124 structure is designed on the back surface of the upper cabinet 12, that is, the surface opposite to the user. The interior of the cavity is hollow, and its shape can correspond to the shape of the switch on the wall, so that the switch on the wall can be hidden in the hidden cavity 124 or components such as wires can be placed in the cavity. The above sound-absorbing frame 21 is designed to have a structure similar to a handle, which is convenient for the removal or placement of the sound-absorbing frame 21 to form a detachable type and cooperate with the housing 1. In order to facilitate the fixation of the sound-absorbing frame 21, a buckle structure can be designed on the sound-absorbing frame 21, and a placement cavity 1251 is designed on the back plate 125 of the upper cabinet 12 at the corresponding position to accommodate the above sound-absorbing frame 21 and the corresponding structure to be buckled with the above buckle.

[0028] The filtering structure in the figure is a filter net 3. The filter net 3 has a gap with the inner wall of the housing 1. This gap serves as both an air duct and a second sound-absorbing cavity. The above filter net 3 is integrally installed at the air inlet position of the air outlet nozzle 4, so that the outside air enters the air outlet nozzle 4 and is heated by the heating system inside the nozzle.

[0029] The air outlet structure in the figure is mainly designed with an air outlet pipe nozzle 4, and inside it, heating and air guiding components are designed according to the air inlet path, such as conventional heating sheets and high-speed blowers as air guiding components. To stably fix the air outlet pipe nozzle 4, a mounting platform 1252 structure can be designed at the mating position on the back plate 125 of the housing 1. The top surface of the mounting platform 1252, which is the surface mating with the air outlet pipe nozzle 4, is an inclined plane, and at the same time, an inward concave design is made below it to form a semicircle, so as to integrally fit with the outer wall of the tubular air outlet pipe nozzle 4 to ensure sufficient mounting surface. At the same time, to avoid the vibration of the air outlet pipe nozzle 4, a plurality of aligned groove 1253 structures can be designed at the top of the above-mentioned semi-circular surface of the mounting platform 1252. Correspondingly, the air outlet pipe nozzle 4 is also designed with corresponding protrusions 41 at the corresponding positions, so as to ensure the stability of the air outlet pipe nozzle 4. To make the above air outlet structure more stable when installed on the housing 1, two fixed wings 42 structures can be designed at the end of the air outlet pipe nozzle 4, that is, at the air outlet position. These two fixed wings 42 are installed symmetrically left and right, and at the same time, each fixed wing 42 is designed with protruding mounting posts 421 structures in two opposite directions, so as to be installed and fixed to the housing 1 at the corresponding position through screws. The temperature of the air outlet 123 of this household silent hand dryer can be automatically adjusted according to the change of the external temperature. For example, in summer, when the external temperature is high, the heating system will reduce the heating power, so that the temperature of the air blown on the hand is not scalding, but can improve the hand drying efficiency. In autumn, the heating power will be appropriately increased. In winter, it is necessary to start heating at full load, so as to improve the comfort of the product.

[0030] The specific embodiments described above are only used to explain the technical solution and are not used to limit the technical solution. In the description of the technical solution, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the technical solution.

[0031] At the same time, in the description of the technical solution, it should be noted that unless otherwise clearly specified and limited, the terms "fixed" and "mated" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the technical solution can be understood according to specific situations.

[0032] Although embodiments of the present technical solution have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present technical solution. The scope of the present technical solution is defined by the appended claims and their equivalents.

Claims

1. A household silent hand dryer, characterized by: The invention comprises a shell (1), sound-absorbing cotton (22), a filter (3), an air outlet nozzle (4), a heating system and a fan; the shell (1) is provided with an air inlet cavity and a hidden cavity (124); the air inlet cavity is located at the air inlet (122) of the shell (1), sound-absorbing cotton is arranged in the air inlet cavity, the hidden cavity (124) is in the shape of a hollow groove and is recessed inwards and is located at the back of the shell (1) and corresponds to a switch on the wall; the filter (3) is arranged at the air inlet position of the air outlet nozzle (4), a gap between the filter (3) and the shell (1) forms a sound-absorbing cavity, and the air outlet nozzle (4) has a heating system and a fan in accordance with the air inlet path; the air outlet (123) of the air outlet nozzle (4) is flat or circular.

2. The household silent hand dryer according to claim 1, characterized in that: The upper middle portion of the shell (1) facing the user is a U-shaped structure, and the sound-absorbing cotton (22) and the air outlet nozzle (4) are located at the lower portion of the U-shaped structure.

3. The household silent hand dryer according to claim 2, characterized in that: The air outlet (123) is arranged outwardly relative to the air inlet (122).

4. The household silent hand dryer according to claim 3, characterized in that: The sound-absorbing cotton (22) is placed in a sound-absorbing frame (21). The sound-absorbing frame (21) has a handle. The sound-absorbing frame (21) is placed in the housing (1) in a removable manner.

5. The household silent hand dryer according to claim 4, characterized in that: The housing (1) comprises a tray (11) and an upper cabinet (12); the tray (11) is an inverted L-shaped structure, the upper cabinet (12) is a square structure, the tray (11) and the upper cabinet (12) are aligned in overall structure, the tray (11) has a mounting hole (111) at the bottom of the side wall, and the upper cabinet (12) has a corresponding mounting protrusion (41) (121) at the mounting hole (111).

6. The household silent hand dryer according to claim 5, characterized in that: The sound-absorbing frame (21) is provided with a buckle, and a corresponding position of the back plate (125) of the upper cabinet (12) is provided with a placement cavity (1251), and the sound-absorbing frame (21) is placed in the placement cavity (1251) and is engaged with the buckle at the position.

7. The household silent hand dryer according to claim 6, characterized in that: The back plate (125) has a mounting platform (1252) at a position cooperating with the air outlet nozzle (4); the surface of the mounting platform (1252) cooperating with the air outlet nozzle (4) is an inclined surface; the top surface of the mounting platform (1252) is concave inwardly to form a semicircular arc surface that fits with the outer wall of the air outlet nozzle (4).

8. The household silent hand dryer according to claim 7, characterized in that: The installation platform (1252) has a plurality of grooves (1253) at the top of the semicircular arc surface, and the air outlet nozzle (4) has corresponding protrusions (41) at corresponding positions.

9. The household silent hand dryer according to claim 8, characterized in that: The air outlet nozzle (4) has fixed wings (42) arranged symmetrically on the left and right at the air outlet (123), and protruding mounting columns (421) are provided at different positions on both sides of the fixed wings (42), and the mounting columns (421) are provided with screws for fixing to the housing (1).

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