CN113638910A

CN113638910A - Noise reduction structure and foot brushing device

Info

Publication number: CN113638910A
Application number: CN202110843077.5A
Authority: CN
Inventors: 苏讯; 陈勇; 王忠良; 李典海
Original assignee: Shenzhen Xiangzu Intelligent Technology Co ltd
Current assignee: Shenzhen Xiangzu Intelligent Technology Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-11-12
Anticipated expiration: 2041-07-26
Also published as: CN113638910B

Abstract

The application provides a noise reduction structure and a foot brushing device, wherein the noise reduction structure comprises a shell with an accommodating cavity and an air supply assembly, wherein the shell is used for accommodating the air supply assembly; the silencing support is arranged on the shell and covers the air inlet, and a through hole communicated with the air inlet is formed in the silencing support; the silencing top cover is covered on the silencing support and is connected with the shell, and an air inlet channel communicated with the through hole is formed in the silencing top cover. The air supply assembly is wrapped by the shell, so that noise generated by the air supply assembly can be effectively isolated; outside air enters the accommodating chamber in proper order through the air inlet channel of amortization top cap, the through-hole of amortization support and air intake to discharge through the air outlet after being concentrated by air supply assembly, air inlet channel and through-hole multiplicable noise impedance, thereby weaken the noise. Therefore, the noise reduction structure has good noise reduction effect on the air supply assembly, and the noise of the foot brushing device is small.

Description

Noise reduction structure and foot brushing device

Technical Field

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

Background

People want to dry their feet quickly after bathing or washing their feet, on the one hand, because wet feet cause discomfort to people; on the other hand, the water drops remained on the feet are easy to breed bacteria to cause dermatophytosis, and in winter, the feet are cold to influence the health of people, and the people need to dehumidify and keep warm in time. Currently, people dry their feet primarily with the aid of dry towels. However, in a typical household, a public foot towel is typically used without regular replacement or cleaning of the towel being customary. The foot is wiped by a dry towel, and bacteria and the like remained on the foot are easily adhered to the towel. When the towel is wiped repeatedly for a long time, bacteria on the towel are easy to cause risks of breeding, cross infection and the like.

In order to solve the problems, the foot brushing device is arranged on the market at present and comprises a shell and a fan arranged in the shell, and an air outlet which is opposite to an air outlet end of the fan is formed in the shell. The air generated by the fan during working can be discharged from the air outlet, the user aims the feet at the air outlet, and the moisture on the feet is dried through the air discharged from the air outlet, so that the risk caused by wiping the feet with a dry towel is avoided.

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

Disclosure of Invention

An object 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 at the during operation, influences the problem of using experience.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in one aspect, a noise reducing structure is provided, comprising:

the air supply device comprises a shell with an accommodating cavity and an air inlet, wherein the shell is used for accommodating an air supply assembly;

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

and the silencing top cover is covered on the silencing support and is 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 by the shell, so that noise generated by the air supply assembly can be effectively isolated; secondly, the outside air enters the accommodating chamber in proper order by the inlet air duct of amortization top cap, the through-hole and the air intake of amortization support to discharge through the air outlet after being concentrated by air supply assembly, inlet air duct and through-hole multiplicable noise impedance, thereby weaken the noise. Therefore, the noise reduction structure has good noise reduction effect on the air supply assembly.

In one embodiment, the housing includes a bottom cover and an upper cover connected to the bottom cover, the bottom cover and the upper cover enclosing 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.

This structure, through setting up the casing into bottom and upper cover, the convenience is to the dismouting and the maintenance of air supply subassembly.

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

The structure can avoid noise leakage and further improve the noise reduction effect.

In one embodiment, the sound attenuation bracket includes a cover plate mounted on the housing and a boss protruding from the cover plate in a direction away from the air inlet, and the boss is provided with a plurality of through holes.

The structure can further increase the sound impedance and further weaken the noise.

In one embodiment, a flange extends from the edge of the cover plate in the direction away from the boss, and a groove for the flange to extend into is correspondingly formed in the shell.

This structure can realize the quick location installation to the amortization support, improves the connection precision between amortization support 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 long strip shape, and the air inlet channel is formed in the ventilation cover.

This structure is rectangular platykurtic with inlet air channel setting, can carry out effective conversion to high frequency noise to reduce noise frequency lets sound soft.

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

The structure can shield a plurality of through holes, thereby increasing the sound impedance and weakening the noise.

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

This structure can improve the installation steadiness of air supply subassembly through the supporting pad, and the range of swing is too big when avoiding air supply subassembly high-speed operation.

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 substrate and a cushion block mounted on the substrate, 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 supporting pad and the supporting seat, and the efficiency is improved; on the other hand, the constant head tank can be fixed the cushion chucking to improve the joint strength between supporting pad and the supporting seat.

In another aspect, a foot brushing device is provided, which includes the noise reduction structure and the air blowing assembly mounted in the casing.

This structure, the foot device that brushes that adopts above-mentioned structure of making an uproar of falling is small in noise, uses and experiences well.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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 by 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 pipe according to the embodiment of the present disclosure;

fig. 5 is an exploded schematic view of an air supply assembly provided in the embodiment of the present application;

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 first schematic structural diagram of a silencing support according to an embodiment of the present disclosure;

fig. 8 is a second schematic structural diagram of a silencing support provided in the embodiment of the present application;

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

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

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

Wherein, in the drawings, the reference numerals are mainly as follows:

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

2. an air supply assembly; 21. a fan; 211. mounting grooves; 22. a noise reduction structure; 220. an accommodating 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 supporting seat; 2219. positioning a groove; 222. a sound deadening support; 2220. a through hole; 2221. a cover plate; 2222. a boss; 2223. flanging; 2224. a mounting seat; 2225. a first mounting hole; 2226. fixing grooves; 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. cushion blocks; 2243. positioning blocks;

3. an exhaust duct; 31. a first stage; 32. a second stage; 33. a support block; 34. a first card slot;

4. a heating assembly; 41. a mica sleeve; 42. a mica support; 421. a second card slot; 43. heating wires;

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

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

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, 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 merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" 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 "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to 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 based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

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 phrases "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 noise reduction structure 22 according to an embodiment of the present application will now be described. The noise reduction structure 22 includes a housing 221 having a receiving chamber 220, a sound-deadening support 222, and a sound-deadening roof 223. Wherein, an air inlet 2210 is formed at one end of the housing 221, an air outlet 2211 is formed 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. The silencing bracket 222 is mounted on the housing 221 and covers the air inlet 2210, and a through hole 2220 communicating with the air inlet 2210 is formed in the silencing bracket 222. The silencing top cover 223 covers the silencing support 222 and is connected to the housing 221, and the silencing top cover 223 is provided with an air inlet channel 2231 communicated with the 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. Wherein, the air supply component 2 can be a fan 21 and the like. Firstly, the air supply assembly 2 is wrapped by the shell 221, so that noise generated by the air supply assembly 2 can be effectively isolated; secondly, the external air sequentially enters the accommodating chamber 220 through the air inlet passage 2231 of the silencing top cover 223, the through hole 2220 of the silencing support 222 and the air inlet 2210, is intensively processed by the air supply assembly 2 and then is discharged through the air outlet 2211, and the air inlet passage 2231 and the through hole 2220 can increase noise impedance, thereby reducing noise. Therefore, the noise reduction structure 22 has a good noise reduction effect on the air supply assembly 2.

In one embodiment, referring to fig. 5 and 6, as a specific implementation of the noise reduction structure 22 provided in the embodiments of the present application, the housing 221 includes a bottom cover 2212 and an upper cover 2213 connected to the bottom cover 2212, the bottom cover 2212 and the upper cover 2213 enclose the accommodating cavity 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 bracket 222 is installed 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 top cover 2213 are detachably connected, such as by a screw-locking fixed connection, a snap-fit connection, etc., which are not limited herein. This structure facilitates the mounting, dismounting, and maintenance of the blower assembly 2 by providing the bottom cover 2212 and the top cover 2213 for the casing 221.

In one embodiment, referring to fig. 5 and 6, as a specific implementation of the noise reduction structure 22 provided in the embodiments of the present application, the casing 221 further includes a sealing ring 2214 filling a gap between the bottom cover 2212 and the upper cover 2213. With the 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 the noise reduction effect is improved.

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

In one embodiment, referring to fig. 7, the cover plate 2221 may have a circular shape, the projection 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 projection 2222, so that the number of openings and the resistance may be increased.

In one embodiment, referring to fig. 6, the bottom cap 2212 and the upper cap 2213 may be substantially cylindrical, and the end of the bottom cap 2212 near the air outlet 2211 is tapered, that is, the diameter of the bottom cap 2212 gradually decreases from the end near the upper cap 2213 to the end of the air outlet 2211, so that the air can be intensively discharged, and the 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 air entering from the plurality of through holes 2220 can rapidly enter the air supply assembly 2, so that on one hand, the air leakage can be reduced, and the air inlet amount is increased; on the other hand, the stroke of wind is reduced, and the increase of noise is avoided.

In an embodiment, referring to fig. 8 and 9, as a specific implementation of the noise reduction structure 22 provided in the embodiment of the present application, a flange 2223 extends from the edge of the cover plate 2221 toward the direction away from the boss 2222, and a groove 2215 into which the flange 2223 extends is correspondingly formed on the housing 221. Specifically, a groove 2215 is formed in the upper cover 2213 at a position surrounding the air inlet 2210. With the structure, the flange 2223 is inserted into the groove 2215, so that the silencing support 222 can be positioned and mounted quickly, and the connection precision between the silencing support 222 and the upper cover 2213 is improved.

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

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

In one embodiment, referring to fig. 8, each mounting seat 2224 is formed with a fixing slot 2226 into which the corresponding positioning guide post extends. With the structure, the rapid positioning and installation between the silencing support 222 and the upper cover 2213 can be realized through the positioning and guiding of the fixing groove 2226, and the installation precision and efficiency are 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 2232 connected to the casing 221 and a ventilation cover 2233 mounted on an outer peripheral surface of the cover 2232, the ventilation cover 2233 is in an elongated configuration, and an air inlet channel 2231 is formed in the ventilation cover 2233. This structure is rectangular platykurtic with inlet air channel 2231 setting, can carry out effective conversion to the high frequency noise to reduce noise frequency, let sound soft.

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 sound damping cotton filled in the sound damping top cover 223. With the structure, the sound-deadening cotton can cover the boss 2222, so that the through holes 2220 can be shielded, the sound impedance can be increased, and the noise can be weakened.

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, the noise reduction structure 22 further includes a supporting pad 224 for supporting the air supply assembly 2, and the supporting pad 224 is installed in the accommodating chamber 220. Specifically, the support pad 224 may be made of a silicone material. This structure can improve the installation steadiness of air supply subassembly 2 through supporting pad 224, and the range of swing is too big when avoiding air supply subassembly 2 high-speed operation.

In an embodiment, referring to fig. 5 and fig. 6, as a specific implementation of the noise reduction structure 22 provided in the embodiment of the present application, a supporting seat 2218 is installed on an inner side wall of the casing 221, a positioning slot 2219 is formed on the supporting seat 2218, the supporting 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 slot 2219. According to the structure, through the matching of the cushion block 2242 and the positioning groove 2219, on one hand, the rapid positioning installation between the supporting pad 224 and the supporting seat 2218 is facilitated, and the efficiency is improved; on the other hand, the positioning slot 2219 can tightly clamp and fix the cushion block 2242, thereby improving the connection strength between the supporting pad 224 and the supporting seat 2218.

In one embodiment, referring to fig. 5 and 6, the support pad 224 further includes a positioning block 2243 installed on a side surface of the base plate 2241 away from the cushion block 2242, and the air blowing assembly 2 is correspondingly provided with a mounting groove 211 for the positioning block 2243 to extend into. On 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 is effectively prevented.

In one embodiment, referring to fig. 5 and 6, the number of the supporting seats 2218 corresponds to the number of the supporting pads 224, the number of the supporting seats 2218 and the number of the supporting pads 224 may be two, and the two supporting seats 2218 are installed on the inner side wall of the bottom cover 2212 at intervals. This structure can improve the fixed effect of support to air supply subassembly 2 through two supporting seats 2218 and two supporting pads 224, can further improve the installation steadiness of air supply subassembly 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, and is not limited herein.

The embodiment of the present application further provides a foot brushing device, which includes the noise reduction structure 22 and the air supply assembly 2 installed in the casing 221. The foot brushing device adopting the noise reduction structure 22 has the advantages of low noise, good use experience and the like.

In one embodiment, referring to fig. 1 to 3, specifically, the foot brushing device includes a housing 1 having an accommodating space 10, and an air blowing assembly 2 and a power supply assembly 6 respectively installed in the accommodating space 10, wherein the air blowing assembly 2 is electrically connected to the power supply assembly 6. The housing 1 may include a front shell 11, a rear shell 12, and an end cap 13, wherein the front shell 11 and the rear shell 12 enclose an accommodating space 10 having a top opening, and the top opening may be covered by the end cap 13. The front shell 11 and the rear shell 12 are detachably connected, such as screw locking connection, snap connection and the like. The end cover 13 is detachably connected with the front shell 11 and the rear shell 12, such as screw locking connection, snap connection, etc. By arranging the casing 1 as the front casing 11, the rear casing 12 and the end cover 13, the casing 1 can be disassembled, and 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 can be a battery, a power supply control panel, a switch and the like, and the switch can control the opening and closing of the battery and the air supply assembly 2. Of course, the power supply module 6 may also be directly connected to external circuitry for power supply.

An air outlet opening 100 is formed in the housing 1, and specifically, the air outlet opening 100 is formed in the front housing 11. 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, the cross section area of the exhaust pipe 3 is gradually reduced from the air supply assembly 2 to the direction of the air outlet opening 100, and the cross section of the air outlet opening 100 is oval.

The air supply assembly 2 is connected with the air outlet opening 100 on the shell 1 through the exhaust pipe 3, the cross section area of the exhaust pipe 3 is gradually reduced from the air supply assembly 2 to the direction of 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. Can realize twice through exhaust pipe 3 and air-out opening 100 with higher speed, and then help improving the wind speed, under the unchangeable circumstances of guaranteeing air supply assembly 2 power, the noise of brushing sufficient device is little, uses and experiences well, and is with low costs.

In an embodiment, as a specific implementation manner of the foot brushing device provided in the embodiments 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 15 mm. On one hand, the structure can realize convergence and improve the 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 major axis of the outlet opening 100 and the length of the minor axis of the outlet opening 100 may also be adjusted according to actual needs, and neither is limited herein.

This application has carried out wind speed and noise test to whisking sufficient device, has tested wind speed and noise on fan 21 installs additional the structure 22 of making an uproar and does not install additional the basis of making an uproar structure 22 of making an uproar respectively. The test results of the wind speed and the noise of the fan 21 with the noise reduction structure 22 are shown in table 1 below, and the test results of the wind speed and the noise of the fan 21 without the noise reduction structure 22 are shown in table 2 below.

TABLE 1 wind speed and noise test result table (fan speed 30000rpm) when noise reduction structure is additionally arranged on fan

TABLE 2 wind speed and noise test result table (fan speed 30000rpm) when the fan is not equipped with noise reduction structure

From the comparison of tables 1 and 2, it can be seen that:

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

(2) fan 21 installs noise reduction structure 22 additional and does not install noise reduction structure 22 additional and compares, under the prerequisite that air outlet opening 100's minor axis length keeps unanimity, the wind speed that fan 21 installed after noise reduction structure 22 additional is less than fan 21 and does not install the wind speed after noise reduction structure 22 additional, nevertheless, the noise that fan 21 installed after noise reduction structure 22 additional is obviously less than fan 21 and does not install the noise after noise reduction structure 22 additional, it is obvious effective to the noise reduction effect of the foot device of falling to explain noise reduction structure 22.

In an embodiment, referring to fig. 3 and 10, as a specific implementation of the foot brushing device provided in the embodiments of the present application, the exhaust duct 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, specifically to the air outlet 2211 of the housing 221, the free end of the second section 32 is connected to the air outlet opening 100, the first section 31 is inclined to the second section 32, and the second section 32 is inclined to the horizontal plane. With this structure, the exhaust duct 3 is provided with the first section 31 and the second section 32, so that the air outlet direction of the air supply assembly 2 can be changed, and air can be concentrated and then discharged from the air outlet opening 100.

In one embodiment, referring to fig. 4, the first section 31 and the housing 221 can be fixed by a connecting pipe 7. Stepped parts are respectively arranged on the outer peripheral surface of the first section 31 and the outer peripheral surface of the bottom cover 2212, and stepped parts matched and locked with the corresponding stepped parts are respectively arranged at two ends of the connecting pipe 7, so that the connection and interlocking of one end of the connecting pipe 7 and the first section 31 and the connection and interlocking of the other end of the connecting pipe 7 and the bottom cover 2212 are realized. Wherein, the step part on the outer peripheral surface of the first section 31 and the step part on the outer peripheral surface of the bottom cover 2212 are both arranged in a slope manner, and the step parts at both ends of the connecting pipe 7 are respectively provided with an inclined surface, thereby facilitating the assembly between the connecting 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 angle θ between the second section 32 and the horizontal plane ranges from 35 ° to 40 °. With the structure, the center of high-speed wind discharged from the air outlet opening 100 can be ensured to be positioned at the toes, and the feet can be dried conveniently and quickly. Wherein, the distance between the air outlet opening 100 and the bottom of the shell 1 can be 60mm, the included angle theta between the second section 32 and the horizontal plane can be 37 degrees, and the air drying efficiency of the foot can be improved by the structural design. Of course, in other embodiments, the distance between the outlet opening 100 and the bottom of the casing 1 and the included angle θ between the second section 32 and the horizontal plane may be adjusted according to actual needs, and are not limited herein.

In an embodiment, referring to fig. 4, as a specific implementation of the foot brushing device provided in the embodiment of the present application, the foot brushing device further includes a heating element 4 installed at an end of the exhaust duct 3 close to the blowing element 2, and the heating element 4 is electrically connected to the power supply element 6. With this configuration, the heating unit 4 can be controlled by the power supply unit 6 and can heat the air. The air with the temperature discharged from the air outlet opening 100 can blow the feet of the human body fast, the efficiency is high, and the user experience can be improved.

In an embodiment, referring to fig. 10 and 11, as a specific implementation of the foot brushing device provided in the embodiments of the present application, the heating element 4 includes a mica sleeve 41 installed in the exhaust duct 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 module 6. With the structure, the mica support 42 can be supported by the mica sleeve 41, and the heating wire 43 can be supported by the mica support 42. Wherein, mica support 42 can be formed by splicing two plates into a cross-shaped configuration, mica support 42 is inserted into mica sleeve 41, and heating wire 43 is coiled on mica support 42. The mica support 42 in the cross configuration has a large ventilation; the heating wire 43 has a long length, which helps to improve the heating effect.

In an embodiment, please refer to fig. 4 and 10, as a specific implementation manner of the foot brushing device according to the embodiment of the present application, two ends of the mica support 42 respectively extend out of the mica sleeve 41, a support block 33 is mounted on an inner side wall of the exhaust duct 3 and is matched with one end of the mica support 42 to abut against, and an opening end of the exhaust duct 3 is provided with a first clamping groove 34 into which the other end of the mica support 42 extends. In the structure, the heating component 4 can be supported by the supporting block 33; can realize the quick location dismouting to mica support 42 through first draw-in groove 34, it is efficient.

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

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

In an embodiment, referring to fig. 1 and fig. 2, as a specific implementation of the foot brushing device provided in the embodiment of the present application, a window 14 is opened on the housing 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 from the opening 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 grill 151, a filter 152, and a filter screen 153 engaged with the grill 151 to hold 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 air purification effect. The filter 152 can be clamped and fixed by the grating 151 and the filter screen 153, so that the filter 152 can be conveniently dismounted and maintained. Wherein, the quantity of windowing 14 and the quantity of filtering component 15 can be two, and two windowing 14 are relative sets up, can accelerate the air convection, improve the purifying effect to the air. Of course, the number of windows 14 and the number of filter assemblies 15 can be adjusted according to actual needs, and are not limited herein.

In an embodiment, referring to fig. 2, as an embodiment of the foot brushing device provided by the embodiment of the present application, the foot brushing device further includes a purifying assembly 5 for sterilizing and disinfecting air, the purifying assembly 5 is installed in the accommodating space 10, and the purifying assembly 5 is electrically connected to the power assembly 6. With this structure, the air entering the accommodating space 10 can be sterilized and disinfected by the purifying assembly 5. The foot brushing device can be used as an air purifier to purify air. The end cap 13 may have an air outlet 130 for discharging purified air, so as to purify indoor air. The number of the air outlet holes 130 can be adjusted according to actual needs, and is not limited herein.

In one embodiment, referring to fig. 2, the purification assembly 5 may include an anion generator 51 and an ultraviolet lamp plate 52 respectively installed in the accommodating space 10, and the anion generator 51 and the ultraviolet lamp plate 52 are respectively electrically connected to the power supply assembly 6. With this structure, the negative ions generated by the negative ion generator 51 have the functions of air freshening, smoke abatement and dust removal; the ultraviolet rays emitted from the ultraviolet lamp panel 52 can kill the viruses and bacteria in the air. Through anion generator 51 and ultraviolet lamp plate 52 can realize dual sterilization and purification effect, help improving air quality.

In one embodiment, referring to fig. 2, the foot brushing device further includes a negative ion duct 53 installed on the top of the accommodating space 10 and a fan 54 installed on the negative ion duct 53, wherein the fan 54 is electrically connected to the power module 6. With this structure, the flow velocity of the air can be accelerated by the fan 54 and the negative ion duct 53, and the purification efficiency can be improved.

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. Wherein, the plurality of indicator lights 8 can be respectively used for indicating the working state of the foot brushing device, for indicating the working state of the air supply component 2, for indicating the working state of the heating component 4, for indicating the working state of the filtering component 15 and for indicating the working state of the purifying component 5. Of course, in other embodiments, the number and the function of the indicator lights 8 can be adjusted according to actual needs, and are not limited herein.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. Noise reduction structure, its characterized in that includes:

2. The noise reduction structure 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 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.

3. The noise reduction structure of claim 2, wherein: the housing further includes a sealing ring filling a gap between the bottom cover and the upper cover.

4. The noise reduction structure of claim 1, wherein: the silencing support comprises a cover plate arranged on the shell and a boss which is convexly arranged in the direction away from the air inlet by the cover plate, and the boss is provided with a plurality of through holes.

5. The noise reduction structure of claim 4, wherein: the edge of the cover plate extends towards the direction far away from the boss to form a flanging, and a groove for the flanging to extend into is correspondingly formed in the shell.

6. A noise reducing structure according to any of claims 1-5, characterized in that: the silencing top cover comprises a cover body connected with the shell and a ventilation hood arranged on the outer peripheral surface of the cover body, the ventilation hood is in a long strip-shaped configuration, and the ventilation hood is internally provided with the air inlet channel.

7. A noise reducing structure according to any of claims 1-5, characterized in that: the noise reduction structure further comprises silencing cotton filled in the silencing top cover.

8. A noise reducing structure according to any of claims 1-5, characterized in that: the noise reduction structure further comprises a supporting pad used for supporting the air supply assembly, and the supporting pad is installed in the accommodating chamber.

9. The noise reduction structure of claim 8, wherein: the supporting structure is characterized in that a supporting seat is installed on the inner side wall of the shell, a positioning groove is formed in the supporting seat, the supporting pad comprises a substrate and a cushion block installed on the substrate, and the cushion block is installed in the positioning groove.

10. A foot brushing device is characterized in that: comprising a noise reducing structure as set forth in any of claims 1 to 9 and the air supply assembly mounted in the housing.