EP3878306A1

EP3878306A1 - Hair dryer

Info

Publication number: EP3878306A1
Application number: EP21153983.8A
Authority: EP
Inventors: Xin Liu; Zheng Liu; Yong Xu; Guanjun LONG; Lieqing NIE; Shaoqi SHI
Original assignee: Shenzhen Airgle Corp Ltd; AIRGLE CORP
Current assignee: Shenzhen Airgle Corp Ltd; AIRGLE CORP
Priority date: 2020-03-12
Filing date: 2021-01-28
Publication date: 2021-09-15
Also published as: GB202101214D0; GB2593042A; GB2593042B; CN111345566B; CN111345566A

Abstract

Disclosed is a hair dryer, the hair dryer including: a housing, an air duct being formed in the housing, the housing including an air inlet and an air outlet communicating with the air duct; a fan provided in the housing and located in the air duct; and an outer shell sleeved and fixed on an outside of the housing, an anechoic gap being formed between an outer surface of the housing and an inner surface of the outer shell.

Description

TECHNICAL FIELD

The present disclosure relates to the technical field of household appliances, and in particular, to a hair dryer.

BACKGROUND

In related arts, hair dryer is a small household appliance that people use very frequently in daily life. The hair dryer is mainly used for drying and shaping hair. However, in daily use, the noise generated by the rotation of the fan when the hair dryer is working is very loud, which in turn causes noise pollution and affects the user experience.
The above contents are only used to assist in understanding the technical solution of the present disclosure, which do not mean that the above contents are prior arts.

SUMMARY

The main objective of the present disclosure is to provide a hair dryer, which aims to reduce the noise during the operation of the hair dryer and reduce the degree of influence of the fan noise when the user uses the hair dryer.
In order to achieve the above objective, the present disclosure provides a hair dryer, including:

a housing, an air duct being formed in the housing, the housing including an air inlet and an air outlet communicating with the air duct;
a fan provided in the housing and located in the air duct; and
an outer shell sleeved and fixed on an outside of the housing, an anechoic gap being formed between an outer surface of the housing and an inner surface of the outer shell.

In an embodiment of the present disclosure, the housing includes a main body and a handle connected to the main body, the main body has the air outlet, the handle has the air inlet, the main body is configured to cooperate with the handle to form the air duct, the fan is located in the handle, the outer shell is sleeved on an outside of the handle, and the anechoic gap is formed between an outer surface of the handle and the inner surface of the outer shell.
In an embodiment of the present disclosure, the handle includes:

a connecting portion connected to the main body;
a mounting portion connected to a side of the connecting portion away from the main body, the fan being installed in the mounting portion; and
an air inlet portion connected to a side of the mounting portion away from the connecting portion, the air inlet being defined in the air inlet portion,
the outer shell is sleeved and fixed to the connecting portion and the mounting portion, and the anechoic gap is formed between the outer shell and the mounting portion.

In an embodiment of the present disclosure, a cross section of the mounting portion is polygonal, and a cross section of the outer shell is circular in an extension direction of the handle; and/or a cross-sectional area of the connecting portion is larger than a cross-sectional area of the mounting portion in an extension direction of the handle.
In an embodiment of the present disclosure, a surface of the connecting portion towards the outer shell is provided with an anechoic groove.
In an embodiment of the present disclosure, there are a plurality of anechoic grooves, and the plurality of anechoic grooves are spaced apart from each other along a circumferential direction of the connecting portion.
In an embodiment of the present disclosure, an inner wall surface of the outer shell is provided with a protrusion, the mounting portion is provided with a groove, and the protrusion of the outer shell is embedded in the groove of the mounting portion and fixed by a screw connection.
In an embodiment of the present disclosure, the hair dryer further includes an operation switch, the housing is provided with a first mounting hole, the connecting portion is provided with a second mounting hole, the operation switch is configured to pass through the first mounting hole and the second mounting hole in sequence, and press the outer shell to be fixed to the handle.
In an embodiment of the present disclosure, the hair dryer further includes a first filter sleeve sleeved and fixed to the air inlet portion and covering the air inlet, and the first filter sleeve is provided with a plurality of first filter holes for filtering external fluid.
In an embodiment of the present disclosure, the hair dryer further includes a second filter sleeve, the second filter sleeve is provided with a plurality of second filter holes, the second filter sleeve is connected to an end of the air inlet portion away from the mounting portion, an inner surface of the second filter sleeve is abutted against an outer surface of the first filter sleeve, the second filter hole is opposite to the first filter hole, and a pore size of the first filter hole is smaller than a pore size of the second filter hole.
In technical solutions of the present disclosure, the hair dryer includes a housing, a fan and an outer shell. An air duct is formed in the housing, and the housing has an air inlet and an air outlet communicating with the air duct. The fan is provided in the housing and located in the air duct. The outer shell is sleeved and fixed on an outside of the housing, and an anechoic gap is formed between an outer surface of the housing and an inner surface of the outer shell. As such, when the fan is working, the sound generated by the fan will pass through the housing, the anechoic gap, and the outer shell in sequence, before being transmitted to the external environment. The sound generated during this process will diffuse in the air when passing through the anechoic gap. Therefore, the loudness of the sound produced by the fan is reduced after passing through the anechoic gap, and the loudness transmitted to the external environment is smaller. This can effectively reduce the noise during the operation of the hair dryer, reduce the degree to which the user is affected by the noise of the fan when using the hair dryer, and thereby improve the user's comfort during using the hair dryer.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the related art, the drawings used in the embodiments or the related art will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. It will be apparent to those skilled in the art that other figures can be obtained from the structures illustrated in the drawings without the inventive effort.

FIG. 1 is a schematic structural diagram of a hair dryer according to an embodiment of the present disclosure.
FIG. 2 is an exploded schematic structural diagram of the hair dryer according to the present disclosure.
FIG. 3 is a schematic structural diagram of an outer shell and a handle of the hair dryer according to the present disclosure.
FIG. 4 is a schematic structural diagram of an assembly of the handle and an operation switch of the hair dryer according to the present disclosure.
FIG. 5 is a schematic structural diagram of an assembly of the handle and the operation switch of the hair dryer from another perspective of FIG. 4.
FIG. 6 is a schematic structural diagram of a housing of the hair dryer according to the present disclosure.
FIG. 7 is a schematic structural diagram of a first filter sleeve of the hair dryer according to the present disclosure.
FIG. 8 is a schematic structural diagram of a second filter sleeve of the hair dryer according to the present disclosure.

Description of reference numerals:

Label	Name	Label	Name
100	hair dryer	1232	abutting protrusion
10	housing	10A	anechoic gap
11	main body	20	outer shell
112	air outlet	21	protrusion
12	handle	22	first mounting hole
121	connecting portion	30	operation switch
1211	anechoic groove	40	first filter sleeve
1212	second mounting hole	41	first filter hole
122	mounting portion	50	second filter sleeve
1221	groove	51	second filter hole
123	air inlet portion	60	power line
1231	air inlet

The realization of the objective, functional characteristics, advantages of the present disclosure are further described with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The technical solutions of the embodiments of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the embodiments to be described are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by persons skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.
It is to be understood that, all of the directional instructions in the embodiments of the present disclosure (such as up, down, left, right, front, rear...) can only be used for explaining relative position relations, moving condition of the elements under a special form (referring to figures), and so on, if the special form changes, the directional instructions changes accordingly.
In the present disclosure, unless specified or limited otherwise, the terms "connected", "fixed" and the like are used broadly. For example, "fixed" can be fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures, may also be inner connecting of two elements, or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.
In addition, the descriptions associated with, e.g., "first" and "second," in the present disclosure are merely for descriptive purposes, and cannot be understood as indicating or suggesting relative importance or impliedly indicating the number of the indicated technical feature. Therefore, the feature associated with "first" or "second" can expressly or impliedly include at least one such feature. Besides, the meaning of "and/or" appearing in the disclosure includes three parallel scenarios. For example, "A and/or B" includes only A, or only B, or both A and B. Besides, the technical solutions between the various embodiments can be combined with each other, but they must be based on the realization of those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist, nor is it within the scope of the present disclosure.
The present disclosure provides a hair dryer 100.
As shown in FIG. 1 to FIG. 3 and FIG. 6, in an embodiment of the present disclosure, the hair dryer 100 includes a housing 10, a fan and an outer shell 20. An air duct is formed in the housing 10, and the housing 10 includes an air inlet 1231 and an air outlet 112 communicating with the air duct. The fan is provided in the housing 10 and located in the air duct. The outer shell 20 is sleeved and fixed on an outside of the housing 10, and an anechoic gap 10A is formed between an outer surface of the housing 10 and an inner surface of the outer shell 20.
The fan may use a motor to drive the blades for rotary suction. In order to improve the safety of using the hair dryer 100, the housing 10 can be made of plastic materials, such as ABS, POM, PS, PMMA, PC, PET, etc., or other insulating materials, such that when the hair dryer 100 leaks electricity, it is not easy for the user to hold the handle 12 to get an electric shock, which improves the safety of the user using the hair dryer 100. Meanwhile, the outer shell 20 can be made of elastic materials such as rubber, so that a better hand feeling can be obtained when the user holds the hair dryer 100 for use. It should be noted that the larger the anechoic gap 10A, the better the noise reduction effect, but the volume of the hair dryer 100 will increase accordingly. Therefore, the present disclosure only needs to ensure that there is an anechoic gap 10A between the housing 10 and the outer shell 20. The specific size of the anechoic gap 10A can be selected according to those skilled in the art and is not limited here. In addition, the hair dryer 100 further includes a power line 60 that is connected to the housing 10 and extends out of the housing 10 so as to be connected to an external power source to improve battery life.
In technical solutions of the present disclosure, the hair dryer 100 includes a housing 10, a fan and an outer shell 20. An air duct is formed in the housing 10, and the housing 10 includes an air inlet 1231 and an air outlet 112 communicating with the air duct. The fan is provided in the housing 10 and located in the air duct. The outer shell 20 is sleeved and fixed on an outside of the housing 10, and an anechoic gap 10A is formed between an outer surface of the housing 10 and an inner surface of the outer shell 20. As such, when the fan is working, the sound generated by the fan will pass through the housing 10, the anechoic gap 10A, and the outer shell 20 in sequence, before being transmitted to the external environment. The sound generated during this process will diffuse in the air when passing through the anechoic gap 10A. Therefore, the loudness of the sound produced by the fan is reduced after passing through the anechoic gap 10A, and the loudness transmitted to the external environment is smaller. This can effectively reduce the noise during the operation of the hair dryer 100, reduce the degree to which the user is affected by the noise of the fan when using the hair dryer 100, and thereby improve the user's comfort during using the hair dryer 100.
In an embodiment of the present disclosure, as shown in FIG. 1 to FIG. 5, the housing 10 includes a main body 11 and a handle 12 connected to the main body 11. The main body 11 has the air outlet 112, the handle 12 has the air inlet 1231. The main body 11 is configured to cooperate with the handle 12 to form the air duct. The fan is located in the handle 12. The outer shell 20 is sleeved on an outside of the handle 12, and the anechoic gap 10A is formed between an outer surface of the handle 12 and the inner surface of the outer shell 20. The main body can be provided with heating wire and printed circuit board (PCB), etc., and the heating wire can be controlled by the PCB to work, so that the fluid flowing in from the air inlet 1231 is heated by the heating wire and discharged from the air outlet 112 to meet the needs of users when hot air is required. The air inlet 1231 is provided at the handle 12, and the air outlet 112 is provided on the main body to ensure the length of the air duct in the hair dryer 100, so that the external fluid flows into the hair dryer 100 for a long time to facilitate heating. The fan is provided in the handle 12, which can effectively reduce the weight of the main body 11, so that when the user holds the handle 12, the hair dryer 100 is more stable, which is convenient for the use of the hair dryer 100. In order to eliminate the noise of the fan, the outer shell 20 is sleeved on the handle 12 and generates the anechoic gap 10A with the handle 12 to reduce the noise of the fan.
Further, the handle 12 includes a connecting portion 121, a mounting portion 122, and an air inlet portion 123. The connecting portion 121 is connected to the main body 11. The mounting portion 122 is connected to a side of the connecting portion 121 away from the main body 11. The fan is installed in the mounting portion 122. The air inlet portion 123 is connected to a side of the mounting portion 122 away from the connecting portion 121, the air inlet 1231 is defined in the air inlet portion 123. The outer shell 20 is sleeved and fixed to the connecting portion 121 and the mounting portion 122, and the anechoic gap 10A is formed between the outer shell 20 and the mounting portion 122. The connecting portion 121 can be integrally formed with the mounting portion 122 and the air inlet portion 123, which not only saves the installation process, but also ensures the strength of the handle 12. The connection between the connecting portion 121 and the main body 11 can be a snap or a screw connection, so as to facilitate later maintenance and disassembly. The fan can be fixed in the mounting portion 122 by means of buckles, etc., to prevent the fan from shaking after installation. The air inlet portion 123 is connected to the side of the mounting portion 122 away from the connecting portion 121, thereby further increasing the distance between the air inlet 1231 and the air outlet 112 to further ensure the length of the air duct in the hair dryer 100.
Furthermore, a cross section of the mounting portion 122 is polygonal, and a cross section of the outer shell 20 is circular in an extension direction of the handle 12. Specially, the extension direction of the handle 12 can be the length direction of the handle 12, so that when the handle 12 is sleeved with the outer shell 20, due to the cooperation of the polygon and the circle, a plurality of concave arc spaces will be generated between the mounting portion 122 and the outer shell 20, and then the anechoic gap 10A is formed by the plurality of concave arc spaces, so as to effectively reduce the noise of the fan. A number of concave arcs are arranged around the fan to reduce the noise of the fan from multiple directions to ensure the noise reduction effect of the fan. It should be noted that the polygon can be a hexagon, an octagon, a decagon, etc., which can be specifically selected by those skilled in the art. The side lengths of the polygon are equal, so as to ensure the same noise reduction effect for the fan in each direction.
Alternatively, a cross-sectional area of the connecting portion 121 is larger than a cross-sectional area of the mounting portion 122 in an extension direction of the handle 12. The extension direction of the handle 12 may be the length direction of the handle 12. In order to enlarge the space of the anechoic gap 10A between the mounting portion 122 and the outer shell 20, the cross-sectional area of the connecting portion 121 is larger than that of the mounting portion 122. Furthermore, when the outer shell 20 is installed, it will contact the connecting portion 121 first to further increase the gap between the mounting portion 122 and the outer shell 20, thereby improving the noise reduction effect on the fan.
In an embodiment of the present disclosure, as shown in FIG. 4 and FIG. 5, a surface of the connecting portion 121 towards the outer shell 20 is provided with an anechoic groove 1211. Specially, in order to further improve the noise reduction effect, an anechoic groove 1211 is provided on the surface of the connecting portion 121 towards the outer shell 20. That is, when the outer shell 20 abuts the connecting portion 121, there is a certain gap between the anechoic groove 1211 and the outer shell 20. When the sound generated by the fan works through the gap, the loudness will be reduced accordingly. That is, the anechoic groove 1211 can also reduce the noise generated by the fan when it is working, so as to further reduce the degree of the user being affected by the noise of the fan when the user uses the hair dryer 100.
Further, there are a plurality of anechoic grooves 1211, and the plurality of anechoic grooves 1211 are spaced apart from each other along a circumferential direction of the connecting portion 121. The plurality of anechoic grooves 1211 can improve the noise reduction effect. The specific number of anechoic grooves 1211 can be selected by those skilled in the art according to actual conditions. The plurality of anechoic grooves 1211 are spaced apart from each other along the circumferential direction of the connecting portion 121, so that noise reduction can be provided to the fan from multiple directions, so as to further improve the noise reduction effect of the fan.
In an embodiment of the present disclosure, as shown in FIG. 4 to FIG. 6, an inner wall surface of the outer shell 20 is provided with a protrusion 21, the mounting portion 122 is provided with a groove 1221, and the protrusion 21 of the outer shell 20 is embedded in the groove 1221 of the mounting portion 122 and fixed by a screw connection. Specially, the protrusion 21 is provided on the outer shell 20, and the mounting portion 122 is provided with the groove 1221, so as to play a positioning role when the outer shell 20 is sleeved on the mounting portion 122, and to ensure the accuracy when the outer shell 20 is installed. After the outer shell 20 is sleeved on the mounting portion 122, the charged protrusion 21 of the outer shell 20 is provided with a first connecting hole, the groove 1221 of the mounting portion 122 is provided with a second connecting hole. The outer shell 20 and the mounting portion 122 can be respectively passed through the first connecting hole and the second connecting hole by screws to further fix the housing 20 and the mounting portion 122. Thereby, the stability of the outer shell 20 after the connection is ensured, and the shaking of the outer shell 20 can prevent the impact of the anechoic gap 10A from being affected, thereby ensuring the use of the hair dryer 100.
In an embodiment of the present disclosure, as shown in FIG. 2 and FIG. 4, the hair dryer 100 further includes an operation switch 30, the housing 20 is provided with a first mounting hole 22, the connecting portion 121 is provided with a second mounting hole 1212, the operation switch 30 is configured to pass through the first mounting hole 22 and the second mounting hole 1212 in sequence, and press the outer shell 20 to be fixed to the handle 12. Specially, the operation switch 30 is configured to pass through the first mounting hole 22 and the second mounting hole 1212 in sequence, and press the outer shell 20 to be fixed to the handle 12, thereby the stability of the outer shell 20 after installation is further improved, and the shaking of the outer shell 20 after installation is avoided. It should be noted that the operation switch 30 is also connected to the PCB, so that the operation switch 30 can also adjust functions such as air speed and temperature, which can be specifically selected by those skilled in the art, and will not be described here.
In an embodiment of the present disclosure, as shown in FIG. 2, FIG. 7 and FIG. 8, the hair dryer 100 further includes a first filter sleeve 40. The first filter sleeve 40 is sleeved and fixed to the air inlet portion 123 and covering the air inlet 1231, and the first filter sleeve 40 is provided with a plurality of first filter holes 41 for filtering external fluid. The first filter sleeve 40 filters the external fluid, thereby ensuring the cleanliness of the fluid flowing into the handle 12, and avoiding foreign material entering the handle 12 to damage the hair dryer 100, thereby ensuring the use of the hair dryer 100. A plurality of abutting protrusions 1232 protrude from one end of the handle 12 away from the main body 11. When the first filter sleeve 40 is sleeved on the air inlet 123, the plurality of abutting protrusions 1232 are used to limit and resist the first filter sleeve 40. A plurality of abutting protrusions 1232 can be symmetrically provided at the end of the handle 12 away from the main body 11. Therefore, when the first filter sleeve 40 is sleeved behind the handle 12, the plurality of abutting protrusions 1232 can abut and fix the first filter sleeve 40, and ensure the balance of forces during abutment. The first filter sleeve 40 is not easy to shake after installation, and the stability of the first filter sleeve 40 after installation is improved.
Further, the hair dryer 100 further includes a second filter sleeve 50, the second filter sleeve 50 is provided with a plurality of second filter holes 51, the second filter sleeve 50 is connected to an end of the air inlet portion 123 away from the mounting portion 122, an inner surface of the second filter sleeve 50 is abutted against an outer surface of the first filter sleeve 40, the second filter hole 51 is opposite to the first filter hole 41, and a pore size of the first filter hole 41 is smaller than a pore size of the second filter hole 51. Specially, the second filter sleeve 50 cooperates with the first filter sleeve 40 to form a multi-layer filter, which further improves the effect of filtering fluid. The second filter sleeve 50 can be connected to the air inlet portion 123 by means of screws or snaps. When the second filter sleeve 50 is connected to the handle 12, since the inner surface of the second filter sleeve 50 abuts against the outer surface of the first filter sleeve 40, fixing the second filter sleeve 50 can limit and fix the first filter sleeve 40 at the same time, so that the first filter sleeve 40 and the second filter sleeve 50 can be fixed at the same time, thereby ensuring the stability of the overall structure of the hair dryer 100.
The above are only preferred embodiments of the present disclosure, and thus do not limit the scope of the present disclosure. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present disclosure is included in the scope of the present disclosure.

Claims

A hair dryer, characterized by comprising:
a housing, an air duct being formed in the housing, the housing including an air inlet and an air outlet communicating with the air duct;

a fan provided in the housing and located in the air duct; and

an outer shell sleeved and fixed on an outside of the housing, an anechoic gap being formed between an outer surface of the housing and an inner surface of the outer shell.
The hair dryer of claim 1, wherein:
the housing includes a main body and a handle connected to the main body;

the main body has the air outlet, the handle has the air inlet;

the main body is configured to cooperate with the handle to form the air duct;

the fan is located in the handle; and

the outer shell is sleeved on an outside of the handle, and the anechoic gap is formed between an outer surface of the handle and the inner surface of the outer shell.
The hair dryer of claim 2, wherein the handle includes:
a connecting portion connected to the main body;

a mounting portion connected to a side of the connecting portion away from the main body, the fan being installed in the mounting portion; and

an air inlet portion connected to a side of the mounting portion away from the connecting portion, the air inlet being defined in the air inlet portion,

the outer shell is sleeved and fixed to the connecting portion and the mounting portion, and the anechoic gap is formed between the outer shell and the mounting portion.
The hair dryer of claim 3, wherein:
a cross section of the mounting portion is polygonal, and a cross section of the outer shell is circular in an extension direction of the handle; and/or

a cross-sectional area of the connecting portion is larger than a cross-sectional area of the mounting portion in an extension direction of the handle.
The hair dryer of claim 3, wherein a surface of the connecting portion towards the outer shell is provided with an anechoic groove.
The hair dryer of claim 4, wherein there are a plurality of anechoic grooves, and the plurality of anechoic grooves are spaced apart from each other along a circumferential direction of the connecting portion.
The hair dryer of claim 3, wherein an inner wall surface of the outer shell is provided with a protrusion, the mounting portion is provided with a groove, and the protrusion of the outer shell is embedded in the groove of the mounting portion and fixed by a screw connection.
The hair dryer of claim 3, wherein the hair dryer further includes an operation switch, the housing is provided with a first mounting hole, the connecting portion is provided with a second mounting hole, the operation switch is configured to pass through the first mounting hole and the second mounting hole in sequence, and press the outer shell to be fixed to the handle.
The hair dryer of any one of claims 3 to 8, wherein the hair dryer further includes a first filter sleeve sleeved and fixed to the air inlet portion and covering the air inlet, and the first filter sleeve is provided with a plurality of first filter holes for filtering external fluid.
The hair dryer of claim 9, wherein the hair dryer further includes a second filter sleeve, the second filter sleeve is provided with a plurality of second filter holes, the second filter sleeve is connected to an end of the air inlet portion away from the mounting portion, an inner surface of the second filter sleeve is abutted against an outer surface of the first filter sleeve, the second filter hole is opposite to the first filter hole, and a pore size of the first filter hole is smaller than a pore size of the second filter hole.