CN113638910B - Noise reduction structure and foot flicking device - Google Patents

Abstract

The application provides a noise reduction structure and a foot flicking device, wherein the noise reduction structure comprises a shell with a containing cavity, wherein the shell is used for containing an air supply assembly, an air inlet is formed in one end of the shell, an air outlet is formed in the other end of the shell, and the air inlet and the air outlet are respectively communicated with the containing cavity; the silencing bracket is arranged on the shell and covers the air inlet, and a through hole communicated with the air inlet is formed in the silencing bracket; the silencing top cover is covered on the silencing support and connected with the shell, and an air inlet channel communicated with the through hole is formed in the silencing top cover. According to the air supply assembly, the air supply assembly is wrapped through the shell, so that noise generated by the air supply assembly can be effectively isolated; outside air enters the accommodating cavity in sequence through the air inlet channel of the silencing top cover, the through hole of the silencing support and the air inlet, is intensively processed by the air supply assembly and then is discharged through the air outlet, and the noise impedance can be increased through the air inlet channel and the through hole, so that noise is reduced. Therefore, the noise reduction structure has good noise reduction effect on the air supply assembly, and the foot brushing device has small noise.

Description

Noise reduction structure and foot flicking device

Technical Field

The application belongs to the technical field of daily electrical appliances, and particularly relates to a noise reduction structure and a foot brushing device using the same.

Background

After bathing or washing feet, people want to dry the feet quickly, on one hand, because wet feet cause discomfort to people; on the other hand, the water drops remained on the feet are easy to grow bacteria to cause beriberi, and in winter, the cold on the feet can influence the physical health of people, and the people need to dehumidify and keep warm in time. Currently, the way people dry their feet is mainly by means of a dry towel. However, in a typical household, a common foot towel is typically used, and the towel is not regularly replaced or cleaned. The foot is wiped by the dry towel, and bacteria and the like remained on the foot are easy to adhere to the towel. The towel is wiped by the dry towel repeatedly for a long time, and bacteria on the towel are easy to cause risks of breeding, cross infection and the like.

In order to solve the above problems, a foot brushing device is currently available in the market, and the foot brushing device comprises a housing and a fan installed in the housing, wherein an air outlet which is arranged right opposite to an air outlet end of the fan is formed in the housing. The wind that the fan produced when the during operation can be discharged by the air outlet, and the user aims at the air outlet with foot to blow the moisture on the foot through the wind of air outlet exhaust, thereby avoided adopting dry towel to wipe the above-mentioned risk that the foot arouses.

In order to improve the foot drying efficiency of the foot brushing device on feet, the power of a fan needs to be increased to improve the air outlet speed; the greater the wind speed, the faster the water on the foot evaporates. However, during the process of high-speed rotation, the fan can generate large high-frequency noise and wind noise, and the noise can seriously affect the use experience of a user. Therefore, it is needed to provide a foot brushing device with good noise reduction to solve the problem of large noise generated in the use process of the fan.

Disclosure of Invention

An objective of the embodiments of the present application is to provide a noise reduction structure and a foot brushing device, so as to solve the problems existing in the related art: the fan can produce great noise when the during operation, influences the problem of using experience.

In order to achieve the above purpose, the technical scheme adopted in the embodiment of the application is as follows:

in one aspect, a noise reduction structure is provided, including:

the shell is provided with a containing cavity and is used for containing the air supply assembly, an air inlet is formed in one end of the shell, an air outlet is formed in the other end of the shell, and the air inlet and the air outlet are respectively communicated with the containing cavity;

the silencing bracket is arranged on the shell and covers the air inlet, and a through hole communicated with the air inlet is formed in the silencing bracket;

the silencing top cover is covered on the silencing support and connected with the shell, and an air inlet channel communicated with the through hole is formed in the silencing top cover.

According to the structure, firstly, the air supply assembly is wrapped through the shell, so that noise generated by the air supply assembly can be effectively isolated; and secondly, outside air sequentially enters the accommodating cavity through the air inlet channel of the silencing top cover, the through hole of the silencing bracket and the air inlet, is intensively treated by the air supply assembly and then is discharged through the air outlet, and the noise impedance can be increased through the air inlet channel and the through hole, so that the noise is reduced. Therefore, the noise reduction structure has good noise reduction effect on the air supply assembly.

In one embodiment, the shell comprises a bottom cover and an upper cover connected with the bottom cover, and the bottom cover and the upper cover enclose the accommodating chamber; the bottom cover is provided with the air outlet, the upper cover is provided with the air inlet, the silencing support is arranged on the upper cover, and the silencing top cover is connected with the upper cover.

According to the structure, the shell is arranged to be the bottom cover and the upper cover, so that the air supply assembly can be conveniently disassembled and maintained.

In one embodiment, the housing further comprises a sealing ring filling a gap between the bottom cover and the upper cover.

With this structure, noise leakage can be avoided, and noise reduction effect can be improved.

In one embodiment, the silencing support comprises a cover plate mounted on the shell and a boss protruding from the cover plate in a direction away from the air inlet, and a plurality of through holes are formed in the boss.

With this structure, the sound impedance can be further increased, and noise can be further reduced.

In one embodiment, the edge of the cover plate extends towards the direction away from the boss to form a flange, and the shell is correspondingly provided with a groove into which the flange extends.

The structure can realize the rapid positioning and installation of the sound-absorbing bracket and improve the connection precision between the sound-absorbing bracket and the upper cover.

In one embodiment, the silencing top cover comprises a cover body connected with the shell and a ventilation cover arranged on the outer peripheral surface of the cover body, the ventilation cover is in a strip-shaped configuration, and the air inlet channel is formed in the ventilation cover.

The structure is characterized in that the air inlet channel is arranged in a strip flat shape, and high-frequency noise can be effectively converted, so that the noise frequency is reduced, and the sound is soft.

In one embodiment, the noise reduction structure further comprises noise reduction cotton filled in the noise reduction top cover.

With this structure, the plurality of through holes can be shielded, thereby increasing sound impedance and reducing noise.

In one embodiment, the noise reduction structure further includes a support pad for supporting the air supply assembly, the support pad being mounted in the receiving chamber.

According to the structure, the installation stability of the air supply assembly can be improved through the supporting pad, and the overlarge swing amplitude of the air supply assembly during high-speed operation is avoided.

In one embodiment, a supporting seat is mounted on the inner side wall of the shell, a positioning groove is formed in the supporting seat, the supporting pad comprises a base plate and a cushion block mounted on the base plate, and the cushion block is mounted in the positioning groove.

On one hand, the structure is beneficial to the rapid positioning and installation between the support pad and the support seat, and improves the efficiency; on the other hand, the positioning groove can clamp and fix the cushion block, so that the connection strength between the support cushion and the support seat is improved.

In another aspect, a foot brushing device is provided, including the noise reduction structure and the air supply assembly installed in the housing.

The foot brushing device adopting the noise reduction structure has the advantages of small noise and good use experience.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required for the description of the embodiments or exemplary techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a foot brushing device according to an embodiment of the present application;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a side view of a foot brushing device provided in an embodiment of the present application;

FIG. 4 is an exploded view of the connection of the air supply assembly, the exhaust duct, the heating assembly and the connecting duct provided in the embodiment of the present application;

FIG. 5 is an exploded view of an air supply assembly according to an embodiment of the present disclosure;

FIG. 6 is a schematic cross-sectional view of an air supply assembly according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a sound-deadening bracket according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a sound deadening bracket according to an embodiment of the present application;

fig. 9 is a schematic structural view of an upper cover according to an embodiment of the present disclosure;

FIG. 10 is a schematic cross-sectional view of a heating assembly and exhaust duct connection provided in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a heating assembly according to an embodiment of the present disclosure.

Wherein, each reference numeral in the figure mainly marks:

1. a housing; 10. an accommodating space; 100. an air outlet opening; 11. a front shell; 12. a rear case; 13. an end cap; 130. an air outlet hole; 14. windowing; 15. a filter assembly; 151. a grille; 152. a filter; 153. a filter screen;

2. an air supply assembly; 21. a blower; 211. a mounting groove; 22. a noise reduction structure; 220. a receiving chamber; 221. a housing; 2210. an air inlet; 2211. an air outlet; 2212. a bottom cover; 2213. an upper cover; 2214. a seal ring; 2215. a groove; 2216. fixing the guide post; 2217. a second mounting hole; 2218. a support base; 2219. a positioning groove; 222. a sound attenuation bracket; 2220. a through hole; 2221. a cover plate; 2222. a boss; 2223. flanging; 2224. a mounting base; 2225. a first mounting hole; 2226. a fixing groove; 223. a silencing top cover; 2231. an air inlet channel; 2232. a cover body; 2233. a ventilation hood; 224. a support pad; 2241. a substrate; 2242. a cushion block; 2243. a positioning block;

3. an exhaust pipe; 31. a first section; 32. a second section; 33. a support block; 34. a first clamping groove;

4. a heating assembly; 41. mica sleeve; 42. a mica support; 421. a second clamping groove; 43. a heating wire;

5. a purification assembly; 51. a negative ion generator; 52. an ultraviolet lamp panel; 53. negative ion air duct; 54. a fan;

6. a power supply assembly; 7. a connecting pipe; 8. an indicator light.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the present application, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 5 to 7, a description will now be given of a noise reduction structure 22 provided in an embodiment of the present application. The noise reducing structure 22 includes a housing 221 having a receiving chamber 220, a sound attenuating bracket 222, and a sound attenuating cap 223. Wherein, an air inlet 2210 is provided at one end of the housing 221, an air outlet 2211 is provided at the other end of the housing 221, and the air inlet 2210 and the air outlet 2211 are respectively communicated with the accommodating chamber 220. Muffler bracket 222 is mounted on housing 221 and covers air inlet 2210, and muffler bracket 222 is provided with through hole 2220 communicating with air inlet 2210. Muffler top cover 223 is covered on muffler bracket 222 and connected with shell 221, and muffler top cover 223 is provided with air inlet channel 2231 communicated with through hole 2220. The air supply assembly 2 may be installed in the accommodating chamber 220 of the housing 221, one end of the air supply assembly 2 may be disposed opposite to the air inlet 2210, and the other end of the air supply assembly 2 may be disposed opposite to the air outlet 2211. The air supply assembly 2 may be a fan 21 or the like. Firstly, the air supply assembly 2 is wrapped through the shell 221, so that noise generated by the air supply assembly 2 can be effectively isolated; next, the external air sequentially enters the accommodating chamber 220 through the air inlet channel 2231 of the muffler top cover 223, the through hole 2220 of the muffler bracket 222 and the air inlet 2210, is intensively processed by the air supply assembly 2, and is discharged through the air outlet 2211, and the air inlet channel 2231 and the through hole 2220 can increase noise resistance, thereby reducing noise. Therefore, the noise reduction structure 22 has a good noise reduction effect on the air blowing assembly 2.

In one embodiment, referring to fig. 5 and 6, as a specific implementation of the noise reduction structure 22 provided in the embodiment of the present application, the housing 221 includes a bottom cover 2212 and an upper cover 2213 connected to the bottom cover 2212, and the bottom cover 2212 and the upper cover 2213 enclose a housing chamber 220; an air outlet 2211 is formed in the bottom cover 2212, an air inlet 2210 is formed in the upper cover 2213, the silencing support 222 is mounted on the upper cover 2213, and the silencing top cover 223 is connected with the upper cover 2213. Specifically, the bottom cover 2212 and the upper cover 2213 are detachably connected, such as by a screw locking and fixing connection, a snap connection, etc., which are not limited herein. With this structure, the housing 221 is formed as the bottom cover 2212 and the upper cover 2213, so that the assembly, disassembly and maintenance of the air supply assembly 2 are facilitated.

In one embodiment, referring to fig. 5 and 6, as a specific implementation of the noise reduction structure 22 provided in the embodiment of the present application, the housing 221 further includes a sealing ring 2214 that fills the gap between the bottom cover 2212 and the top cover 2213. With this structure, the gap between the bottom cover 2212 and the upper cover 2213 is sealed by the sealing ring 2214, so that noise leakage can be avoided, and further noise reduction effect can be improved.

In an embodiment, referring to fig. 7, as a specific implementation manner of the noise reduction structure 22 provided in the embodiment of the present application, the noise reduction bracket 222 includes a cover plate 2221 installed on the housing 221, and a boss 2222 protruding from the cover plate 2221 in a direction away from the air inlet 2210, where a plurality of through holes 2220 are formed in the boss 2222. In this structure, by forming the plurality of through holes 2220 in the boss 2222, the sound impedance can be further increased, and noise can be further reduced.

In one embodiment, referring to fig. 7, the cover plate 2221 may have a circular shape, the boss 2222 may have a cylindrical configuration, and a plurality of through holes 2220 may be distributed on the outer circumferential surface and the top surface of the boss 2222, so that the number of openings and the resistance may be increased.

In one embodiment, referring to fig. 6, the bottom cover 2212 and the top cover 2213 may have a substantially cylindrical configuration, and an end of the bottom cover 2212 near the air outlet 2211 is tapered, that is, a diameter of the bottom cover 2212 gradually decreases from an end near the top cover 2213 toward an end of the air outlet 2211, so that wind can be intensively discharged, and an air outlet speed can be increased.

In one embodiment, referring to fig. 6, an end of the air supply assembly 2 near the air inlet 2210 is tapered, and a tip of the air supply assembly 2 extends out of the air inlet 2210 and into the boss 2222. The wind entering through the through holes 2220 can quickly enter the air supply assembly 2, on one hand, the leakage of the wind can be reduced, and the air inlet quantity is improved; on the other hand, the wind stroke is reduced, and the noise is prevented from increasing.

In an embodiment, referring to fig. 8 and fig. 9, as a specific implementation manner of the noise reduction structure 22 provided in the embodiment of the present application, a flange 2223 extends along an edge of the cover plate 2221 in a direction away from the boss 2222, and a groove 2215 into which the flange 2223 extends is correspondingly formed in the housing 221. Specifically, a groove 2215 is formed in the upper cover 2213 at a position surrounding the air inlet 2210. With this structure, by extending the flange 2223 into the groove 2215, the rapid positioning and mounting of the sound absorbing bracket 222 can be achieved, and the connection accuracy between the sound absorbing bracket 222 and the upper cover 2213 can be improved.

In some embodiments, a rubber ring may be installed in the groove 2215, so that a gap between the sound attenuation bracket 222 and the upper cover 2213 may be sealed, and noise caused by air leakage due to the gap may be avoided.

In one embodiment, referring to fig. 7 and 9, the two ends of the cover plate 2221 may be respectively provided with mounting seats 2224, and the upper cover 2213 is provided with fixing guide posts 2216 at positions corresponding to the respective mounting seats 2224. Each mounting seat 2224 is provided with a first mounting hole 2225, each fixed guide column 2216 is provided with a second mounting hole 2217, each first mounting hole 2225 is correspondingly arranged with the corresponding second mounting hole 2217, and locking and fixing can be performed through locking pieces such as screws, so that detachable connection between the silencing bracket 222 and the upper cover 2213 is realized.

In one embodiment, referring to fig. 8, each mounting base 2224 is provided with a fixing slot 2226 into which a corresponding positioning guide post extends. With this structure, the rapid positioning and installation between the muffler bracket 222 and the upper cover 2213 can be realized by the positioning and guiding of the fixing groove 2226, and the installation accuracy and efficiency can be improved.

In an embodiment, referring to fig. 5, as a specific implementation of the noise reduction structure 22 provided in the embodiment of the present application, the noise reduction top cover 223 includes a cover body 2232 connected to the housing 221, and a ventilation cover 2233 mounted on an outer peripheral surface of the cover body 2232, where the ventilation cover 2233 has a strip-shaped configuration, and an air inlet channel 2231 is formed in the ventilation cover 2233. In this structure, the air intake channel 2231 is provided in a strip shape and flat, so that high-frequency noise can be effectively converted, thereby reducing noise frequency and softening sound.

In one embodiment, as a specific implementation of the noise reduction structure 22 provided in the embodiments of the present application, the noise reduction structure 22 further includes noise reduction cotton filled in the noise reduction top cover 223. In this structure, the noise-reducing cotton can cover the boss 2222, so that the plurality of through holes 2220 can be shielded, the sound impedance can be increased, and the noise can be reduced.

In one embodiment, referring to fig. 5 and 6, as a specific implementation of the noise reduction structure 22 provided in the embodiment of the present application, the noise reduction structure 22 further includes a support pad 224 for supporting the air supply assembly 2, and the support pad 224 is installed in the accommodating chamber 220. In particular, the support pad 224 may be made of a silicone material. In this structure, the mounting stability of the air supply assembly 2 can be improved by the support pad 224, so as to avoid the overlarge swing amplitude of the air supply assembly 2 during high-speed operation.

In an embodiment, referring to fig. 5 and 6, as a specific implementation of the noise reduction structure 22 provided in the embodiment of the present application, a support seat 2218 is installed on an inner side wall of the housing 221, a positioning groove 2219 is formed on the support seat 2218, the support pad 224 includes a base plate 2241 and a pad 2242 installed on the base plate 2241, and the pad 2242 is installed in the positioning groove 2219. In this structure, through the cooperation of the cushion 2242 and the positioning groove 2219, on one hand, the quick positioning and installation between the support pad 224 and the support seat 2218 are facilitated, and the efficiency is improved; on the other hand, the positioning groove 2219 can clamp and fix the cushion 2242, so as to improve the connection strength between the support pad 224 and the support seat 2218.

In one embodiment, referring to fig. 5 and 6, the support pad 224 further includes a positioning block 2243 mounted on a side of the substrate 2241 facing away from the pad 2242, and the air supply assembly 2 is correspondingly provided with a mounting groove 211 into which the positioning block 2243 extends. On the one hand, the positioning block 2243 is matched with the mounting groove 211, so that the air supply assembly 2 can be positioned and mounted quickly, and the efficiency is high; on the other hand, the installation stability of the air supply assembly 2 can be improved, and the swing of the air supply assembly 2 can be effectively prevented.

In one embodiment, referring to fig. 5 and 6, the number of the supporting seats 2218 and the number of the supporting pads 224 are correspondingly arranged, and the number of the supporting seats 2218 and the number of the supporting pads 224 can be two, and the two supporting seats 2218 are mounted on the inner side wall of the bottom cover 2212 at intervals. In this structure, the two support seats 2218 and the two support pads 224 can improve the support and fixation effect on the air supply assembly 2, and can further improve the installation stability of the air supply assembly 2. Of course, in other embodiments, the number of the supporting seats 2218 and the number of the supporting pads 224 can be adjusted according to actual needs, which is not limited only herein.

The embodiment of the application also provides a foot brushing device, which comprises the noise reduction structure 22 and the air supply assembly 2 arranged in the shell 221. The foot brushing device adopting the noise reduction structure 22 has the advantages of small noise, good use experience and the like.

In one embodiment, referring to fig. 1 to 3, in particular, the foot brushing device includes a housing 1 having a receiving space 10, and an air supply assembly 2 and a power supply assembly 6 respectively installed in the receiving space 10, wherein the air supply assembly 2 is electrically connected to the power supply assembly 6. The housing 1 may include a front case 11, a rear case 12, and an end cover 13, where the front case 11 and the rear case 12 enclose a receiving space 10 having a top opening, and the end cover 13 may cover the top opening. The front shell 11 and the rear shell 12 are detachably connected, such as screw locking connection, buckle connection and the like. The end cover 13 is detachably connected with the front shell 11 and the rear shell 12 respectively, such as screw locking connection, buckle connection and the like. By providing the housing 1 as the front housing 11, the rear housing 12 and the end cover 13, the housing 1 can be disassembled, so that the air supply assembly 2 and the power supply assembly 6 in the accommodating space 10 can be maintained and replaced conveniently. The power supply assembly 6 may be a battery, a power supply control board, a switch, etc., and the switch may control the opening and closing of the battery and the air supply assembly 2. Of course, the power supply assembly 6 may also be directly connected to an external circuit for supplying power.

The casing 1 is provided with an air outlet opening 100, specifically, the front casing 11 is provided with the air outlet opening 100. The foot brushing device further comprises an exhaust pipe 3 connected with the air outlet end of the air supply assembly 2 and the air outlet opening 100, wherein the cross section area of the exhaust pipe 3 gradually decreases from the air supply assembly 2 towards the air outlet opening 100, and the cross section of the air outlet opening 100 is elliptical.

The air supply assembly 2 is connected with the air outlet opening 100 on the shell 1 through the air exhaust pipe 3, the cross section area of the air exhaust pipe 3 is gradually reduced from the air supply assembly 2 towards the air outlet opening 100, and one-time acceleration can be realized; by setting the cross section of the air outlet opening 100 to be elliptical, secondary acceleration can be achieved. The air exhaust pipe 3 and the air outlet opening 100 can accelerate twice, so that the air speed can be improved, the noise of the foot brushing device is small, the use experience is good, and the cost is low under the condition that the power of the air supply assembly 2 is unchanged.

In one embodiment, as a specific implementation manner of the foot brushing device provided in the embodiment of the present application, the length of the long axis of the air outlet opening 100 ranges from 38mm to 42mm, and the length of the short axis of the air outlet opening 100 ranges from 10mm to 15mm. On one hand, the structure can realize convergence and improve wind speed; on the other hand, noise can be reduced. The length of the long axis of the air outlet opening 100 may be 40mm, and the length of the short axis of the air outlet opening 100 may be 13mm, which may have the advantages of high wind speed and low noise. Of course, in other embodiments, the length of the long axis of the air outlet opening 100 and the length of the short axis of the air outlet opening 100 may be adjusted according to actual needs, which are not limited only herein.

The wind speed and the noise of the foot brushing device are tested, and the wind speed and the noise are tested on the basis that the noise reduction structure 22 is additionally arranged on the fan 21 and the noise reduction structure 22 is not additionally arranged on the fan 21. The wind speed and noise test results of the blower 21 when the noise reduction structure 22 is attached are shown in table 1 below, and the wind speed and noise test results of the blower 21 when the noise reduction structure 22 is not attached are shown in table 2 below.

Table 1. Wind speed and noise test result table (fan speed 30000 rpm) when the noise reduction structure is added to the fan

Table 2. Wind speed and noise test results table (fan speed 30000 rpm) when the noise reduction structure is not added to the fan

As can be seen from the comparison of tables 1 and 2:

(1) Under the premise that other conditions are the same, the larger the short axis length of the air outlet opening 100 is, the smaller the wind speed is, the larger the noise is, namely, the wind speed is inversely proportional to the short axis length of the air outlet opening 100, and the noise is directly proportional to the short axis length of the air outlet opening 100;

(2) The fan 21 is additionally provided with the noise reduction structure 22 and is not additionally provided with the noise reduction structure 22 for comparison, and on the premise that the short axis length of the air outlet opening 100 is kept consistent, the wind speed of the fan 21 after the noise reduction structure 22 is additionally provided with the noise reduction structure 22 is smaller than the wind speed of the fan 21 after the noise reduction structure 22 is not additionally provided with the noise reduction structure 22, however, the noise of the fan 21 after the noise reduction structure 22 is additionally provided with the noise reduction structure 22 is obviously smaller than the noise of the fan 21 after the noise reduction structure 22 is not additionally provided with the noise reduction structure 22, which indicates that the noise reduction effect of the noise reduction structure 22 on the foot brushing device is obviously effective.

In an embodiment, referring to fig. 3 and fig. 10, as a specific implementation manner of the foot brushing device provided in the embodiment of the present application, the exhaust pipe 3 includes a first section 31 and a second section 32 connected to the first section 31; the free end of the first section 31 is connected to the air supply assembly 2, in particular to the air outlet 2211 of the housing 221, and the free end of the second section 32 is connected to the air outlet opening 100, the first section 31 being inclined to the second section 32, the second section 32 being inclined to the horizontal. In this configuration, the exhaust duct 3 is provided in the first and second stages 31 and 32, so that the direction of the air flow from the air blowing unit 2 can be changed, and the air can be concentrated and then exhausted through the air outlet opening 100.

In one embodiment, referring to fig. 4, the first section 31 and the housing 221 may be fixedly connected by a connecting pipe 7. The outer circumferential surface of the first section 31 and the outer circumferential surface of the bottom cover 2212 are respectively provided with a stepped portion, and both ends of the connection pipe 7 are respectively provided with stepped portions which are cooperatively locked with the corresponding stepped portions, thereby realizing connection interlock of one end of the connection pipe 7 with the first section 31 and connection interlock of the other end of the connection pipe 7 with the bottom cover 2212. Wherein, the step portion on the outer circumferential surface of the first section 31 and the step portion on the outer circumferential surface of the bottom cover 2212 are all inclined, and the step portions at both ends of the connection pipe 7 are respectively provided with inclined surfaces, thereby facilitating the assembly between the connection pipe 7 and the first section 31 and the bottom cover 2212, respectively.

In an embodiment, referring to fig. 3, as a specific implementation of the foot brushing device provided in the embodiment of the present application, the distance between the air outlet opening 100 and the bottom of the casing 1 ranges from 55mm to 60mm, and the included angle θ between the second segment 32 and the horizontal plane ranges from 35 ° to 40 °. With this structure, the center of the high-speed air discharged from the air outlet opening 100 is ensured to be at the toes, and the feet can be dried conveniently and rapidly. Wherein, the distance between the air outlet opening 100 and the bottom of the shell 1 can be 60mm, the included angle θ between the second section 32 and the horizontal plane can be 37 °, and the structural design can improve the air drying efficiency of the foot. Of course, in other embodiments, the distance between the air outlet opening 100 and the bottom of the casing 1 and the angle θ between the second section 32 and the horizontal plane may be adjusted according to actual needs, which are not limited only herein.

In an embodiment, referring to fig. 4, as a specific implementation manner of the foot brushing device provided in the embodiment of the present application, the foot brushing device further includes a heating component 4 installed at one end of the exhaust pipe 3 near the air supply component 2, where the heating component 4 is electrically connected to the power supply component 6. With this structure, the heating unit 4 can be controlled by the power unit 6, and can heat the air to a temperature. The air with temperature discharged from the air outlet opening 100 can quickly dry the feet of the human body, so that the efficiency is high, and the user experience can be improved.

In one embodiment, referring to fig. 10 and 11, as a specific implementation of the foot brushing device provided in the embodiment of the present application, the heating assembly 4 includes a mica sleeve 41 installed in the exhaust pipe 3, a mica support 42 installed in the mica sleeve 41, and a heating wire 43 installed on the mica support 42; the heating wire 43 is electrically connected to the power supply unit 6. With this structure, the mica holder 42 can be supported by the mica bush 41, and the heater wire 43 can be supported by the mica holder 42. Wherein, the mica support 42 can be spliced by two plates to form a cross-shaped configuration, the mica support 42 is inserted into the mica sleeve 41, and the heating wire 43 is coiled on the mica support 42. The mica support 42 in a cross-shaped configuration has high ventilation quantity; the length of the heating wire 43 is long, which contributes to the improvement of the heating effect.

In an embodiment, referring to fig. 4 and fig. 10, as a specific implementation manner of the foot brushing device provided in the embodiment of the present application, two ends of a mica support 42 respectively extend out of a mica sleeve 41, a supporting block 33 matched with and resisting one end of the mica support 42 is installed on an inner side wall of an exhaust pipe 3, and a first clamping groove 34 for extending into the other end of the mica support 42 is formed at an opening end of the exhaust pipe 3. With this structure, the support of the heating element 4 can be achieved by the support block 33; the mica support 42 can be quickly positioned and disassembled through the first clamping groove 34, so that the efficiency is high.

In an embodiment, referring to fig. 10, as a specific implementation manner of the foot brushing device provided in the embodiment of the present application, a second clamping groove 421 for accommodating the heating wire 43 is formed on the mica support 42. This structure, the second draw-in groove 421 can realize the quick positioning dismouting to heater strip 43, and is efficient.

In some embodiments, the heating assembly 4 may also be a heating rod directly mounted in the exhaust duct 3, which is electrically connected to the power supply assembly 6. Of course, in other embodiments, the structure of the heating assembly 4 may be adjusted according to actual needs, which is not limited only herein.

In an embodiment, referring to fig. 1 and fig. 2, as a specific implementation manner of the foot brushing device provided in the embodiment of the present application, a window 14 is formed on the casing 1, and a filter assembly 15 for filtering air is installed in the window 14. With this structure, the air entering the accommodating space 10 through the window 14 can be filtered and purified by the filter assembly 15, so that the quality of the discharged air can be improved.

In one embodiment, referring to fig. 2, the filter assembly 15 includes a grating 151, a filter 152, and a filter screen 153 cooperating with the grating 151 to clamp the filter 152. With this structure, the external air can be sequentially filtered by the grill 151, the filter 152, and the filter screen 153, thereby improving the purifying effect on the air. The filter 152 can be clamped and fixed by the grating 151 and the filter screen 153, so that the filter 152 is convenient to disassemble, assemble and maintain. The number of the windows 14 and the number of the filter assemblies 15 may be two, and the two windows 14 are disposed opposite to each other, so that air convection can be accelerated, and the air purification effect is improved. Of course, the number of the windows 14 and the number of the filter assemblies 15 can be adjusted according to actual needs, and are not limited only herein.

In an embodiment, referring to fig. 2, as a specific implementation manner of the foot brushing device provided in the embodiment of the present application, the foot brushing device further includes a purifying component 5 for sterilizing and disinfecting air, where the purifying component 5 is installed in the accommodating space 10, and the purifying component 5 is electrically connected to the power supply component 6. With this structure, the air introduced into the accommodating space 10 can be sterilized by the purifying unit 5. The foot brushing device can be used as an air purifier to purify air. The end cover 13 may be provided with an air outlet 130 for discharging purified air, so that indoor air may be purified. The number of the air outlet holes 130 can be adjusted according to actual needs, and is not limited only herein.

In one embodiment, referring to fig. 2, the purifying assembly 5 may include a negative ion generator 51 and an ultraviolet lamp panel 52 respectively installed in the accommodating space 10, and the negative ion generator 51 and the ultraviolet lamp panel 52 are electrically connected to the power supply assembly 6, respectively. With this structure, the negative air ions generated by the negative ion generator 51 have the functions of refreshing air and eliminating smoke and dust; the ultraviolet light emitted from the ultraviolet lamp panel 52 kills viruses and bacteria in the air. The double sterilization and purification effects can be realized through the anion generator 51 and the ultraviolet lamp panel 52, which is helpful for improving the air quality.

In one embodiment, referring to fig. 2, the foot brushing device further includes an anion air duct 53 installed at the top of the accommodating space 10 and a fan 54 installed on the anion air duct 53, where the fan 54 is electrically connected to the power supply assembly 6. With this structure, the flow velocity of the wind can be accelerated by the fan 54 and the negative ion wind channel 53, thereby improving the purification efficiency.

In one embodiment, referring to fig. 1 and 2, the foot brushing device further comprises a plurality of indicator lights 8 mounted on the housing 1. The plurality of indicator lamps 8 may be used to indicate an operating state of the foot brushing device, an operating state of the air supply assembly 2, an operating state of the heating assembly 4, an operating state of the filtering assembly 15, and an operating state of the purifying assembly 5, respectively. Of course, in other embodiments, the number and the function of the indicator lamps 8 can be adjusted according to actual needs, and are not limited only herein.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, since it is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (6)

1. The foot brushing device is characterized in that: the device comprises a noise reduction structure and an air supply assembly;

the noise reduction structure includes:

the air supply assembly is arranged in the accommodating chamber, an air inlet is formed in one end of the housing, an air outlet is formed in the other end of the housing, and the air inlet and the air outlet are respectively communicated with the accommodating chamber;

the silencing bracket is arranged on the shell and covers the air inlet, and a through hole communicated with the air inlet is formed in the silencing bracket; the silencing bracket comprises a cover plate and a boss, the cover plate is arranged on the shell, the boss is convexly arranged from the cover plate to the direction away from the air inlet, and a plurality of through holes are formed in the boss; the edge of the cover plate extends towards the direction far away from the boss, a groove into which the flange extends is correspondingly formed in the shell, and a rubber ring is arranged in the groove; mounting seats are respectively mounted at two ends of the cover plate, a fixed guide post is mounted on the shell at the position corresponding to each mounting seat, and a fixed groove for the corresponding fixed guide post to extend into is formed in each mounting seat; one end of the air supply assembly, which is close to the air inlet, is conical, and the tip of the air supply assembly extends out of the air inlet and into the boss;

the silencing top cover is covered on the silencing bracket and connected with the shell, and an air inlet channel communicated with the through hole is formed in the silencing top cover; the silencing top cover comprises a cover body connected with the shell and a ventilation cover arranged on the peripheral surface of the cover body, the ventilation cover is in a strip-shaped configuration, and the air inlet channel is formed in the ventilation cover;

the foot brushing device further comprises a shell with a containing space and a power supply assembly arranged in the containing space, wherein the power supply assembly is electrically connected with the air supply assembly, and an air outlet opening is formed in the shell; the foot brushing device further comprises an exhaust pipe connected with the air outlet end of the air supply assembly and the air outlet opening; the cross section area of the exhaust pipe is gradually reduced from the air supply assembly to the direction of the air outlet opening, and the cross section of the air outlet opening is elliptical; the exhaust pipe extends downwards from the air outlet end of the air supply assembly; the exhaust pipe comprises a first section and a second section connected with the first section, and the second section is inclined to the horizontal plane;

the foot brushing device further comprises a heating assembly arranged at one end, close to the air supply assembly, of the exhaust pipe, wherein the heating assembly comprises a mica sleeve arranged in the exhaust pipe, a mica support arranged in the mica sleeve and a heating wire arranged on the mica support, the heating wire is electrically connected with the power supply assembly, the mica support is spliced into a cross-shaped configuration by two plates, the mica support is inserted into the mica sleeve, and the heating wire is coiled on the mica support; the mica support comprises a mica sleeve, an exhaust pipe, a supporting block, a first clamping groove, a second clamping groove and a heating wire, wherein the two ends of the mica support extend out of the mica sleeve respectively, the supporting block matched with and resisting one end of the mica support is arranged on the inner side wall of the exhaust pipe, the first clamping groove is formed in the opening end of the exhaust pipe and used for enabling the other end of the mica support to extend in, and the second clamping groove is formed in the mica support and used for accommodating the heating wire.

2. The foot brushing device of claim 1, wherein: the shell comprises a bottom cover and an upper cover connected with the bottom cover, and the bottom cover and the upper cover are enclosed into the accommodating chamber; the bottom cover is provided with the air outlet, the upper cover is provided with the air inlet, the silencing support is arranged on the upper cover, and the silencing top cover is connected with the upper cover.

3. The foot brushing device of claim 2, wherein: the housing further includes a sealing ring filling a gap between the bottom cover and the upper cover.

4. A foot brushing device as claimed in any one of claims 1 to 3, wherein: the noise reduction structure further comprises noise reduction cotton filled in the noise reduction top cover.

5. A foot brushing device as claimed in any one of claims 1 to 3, wherein: the noise reduction structure further comprises a support pad for supporting the air supply assembly, and the support pad is installed in the accommodating cavity.

6. The foot brushing device as defined in claim 5, wherein: the supporting seat is arranged on the inner side wall of the shell, the supporting seat is provided with a positioning groove, the supporting pad comprises a base plate and a cushion block arranged on the base plate, and the cushion block is arranged in the positioning groove.