Hair drier capable of reducing use noise through conical sound absorption structure

Abstract

The utility model relates to the technical field of hair driers, in particular to a hair drier capable of reducing use noise through a conical sound absorption structure. Comprising a blower body with an air inlet and an air outlet, a fluid channel which enters the air outlet along the air inlet and flows out is arranged in the blower body, a high-speed fan and a heating module are arranged in the fluid channel, the heating module is arranged at the air outlet and the high-speed fan, and a conical inner shell is arranged in the fluid channel. The end, with a small opening, of the conical inner shell is in butt joint with the air inlet, the end, with a large opening, of the conical inner shell is in butt joint with the high-speed fan, a plurality of evenly-distributed long holes are formed in the wall face of the conical inner shell in a surrounding mode, a sound absorption cavity is formed between the conical inner shell and the inner wall of the blower body, and a sound absorption layer is arranged in the sound absorption cavity. And the sound absorption layer arranged in the sound absorption cavity can play a powerful sound absorption role. When sound waves generated when the blower works enter the sound absorption cavity through the long holes, the sound absorption layer can efficiently absorb and convert sound wave energy, and therefore noise transmission is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryers, in particular to a hair dryer which utilizes a conical sound-absorbing structure to reduce the use noise. Background Art

[0002] As a common personal care appliance in daily life, hair dryers are used very frequently. Whether it is combing your hair in the morning or drying your hair quickly after a bath, hair dryers play an indispensable role; however, for a long time, the noise problem has always been the focus of users' attention when using hair dryers. At present, the new hair dryers on the market have achieved technological innovation and performance improvement in many aspects, but unfortunately, the noise control is not satisfactory. Compared with traditional hair dryers, the noise they generate is even greater. There are two key reasons for this: First, in order to achieve stronger wind output, most new hair dryers use high-speed motor fans. The speed of this high-speed motor fan is usually around 110,000r / min. Such a high speed causes the blades to generate a lot of high-frequency noise during high-speed rotation. For example, when some brands of new hair dryers are working, their high-frequency noise is like a sharp whistle, which makes people feel uncomfortable. Second, the wind speed of the air outlet of the new hair dryer has been significantly improved compared with traditional hair dryers. The substantial increase in wind speed causes the turbulent noise generated by the airflow passing through the air outlet to be more prominent than that of traditional hair dryers. For example, a common scenario is that when a new hair dryer is used, the turbulent noise it produces may make it difficult for other people in the same room to communicate normally.

[0003] In view of the above situation, how to effectively reduce the noise of new hair dryers has become an important direction for the further development and optimization of current hair dryer technology. This is not only related to the user experience, but also a key challenge for technological breakthroughs and innovations in related industries. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] A hair dryer which uses a conical sound-absorbing structure to reduce noise during use, comprises a hair dryer main body with an air inlet and an air outlet, a fluid channel which enters along the air inlet and flows out from the air outlet is arranged in the hair dryer main body, a high-speed fan and a heating module are arranged in the fluid channel, the heating module is arranged in the air outlet and the high-speed fan, a conical inner shell is arranged in the fluid channel, an end of the conical inner shell with a small opening is connected to the air inlet, and an end of the conical inner shell with a large opening is connected to the high-speed fan, a plurality of evenly distributed long holes are opened around the wall surface of the conical inner shell, a sound-absorbing cavity is formed between the conical inner shell and the inner wall of the hair dryer main body, and a sound-absorbing layer is arranged in the sound-absorbing cavity.

[0006] Preferably, the long hole is elongated along the flow direction of the fluid channel, and a flow guide edge is formed along the long hole on the outer wall of the conical inner shell.

[0007] Preferably, the sound-absorbing layer is made of sound-absorbing cotton material.

[0008] Preferably, one end of the conical inner shell extends along the air inlet to the outside of the hair dryer body and forms a skeleton structure, and a filter layer structure is covered on the skeleton structure.

[0009] Preferably, the inner side between the skeleton structure and the conical inner shell is in an arcuate transition, so that the skeleton structure corresponds to the caliber of the air inlet, and the conical inner shell is formed into an aperture smaller than the air inlet through the arcuate transition.

[0010] Preferably, the filter layer structure includes a first magnetic body arranged at the end of the skeleton structure, a filter sleeve coveringly mounted on the outside of the skeleton structure, an outer protective frame mounted on the outside of the filter sleeve, and a second magnetic body fixed on the outer protective frame and magnetically matched with the first magnetic body.

[0011] Preferably, the other end of the conical inner shell extends between the high-speed fan and the inner wall of the hair dryer body to form a fixing sleeve for fixing the high-speed fan.

[0012] Preferably, an air outlet inner shell is also installed inside the hair dryer body, and a snap-fit ​​structure is provided between the air outlet inner shell and the fixed sleeve so that the air outlet inner shell and the fixed sleeve are snap-connected and fixed, the air outlet inner shell is connected to the air outlet, and the heating module is installed inside the air outlet inner shell, and a guide air outlet mesh port is provided at one end of the air outlet inner shell connected to the air outlet.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The sound-absorbing layer set in the sound-absorbing cavity can play a powerful role in sound absorption. When the sound waves generated by the hair dryer are working, they enter the sound-absorbing cavity through the long holes. The sound-absorbing layer can efficiently absorb and transform the sound wave energy, thereby greatly reducing the propagation of noise.

[0015] The use of a conical structure has unique advantages. This conical design can cleverly guide the propagation path of sound waves, causing the sound waves to continuously reflect and refract in the conical inner shell, thereby effectively reducing the possibility of sound waves being directly transmitted;

[0016] For the high-frequency noise generated by high-speed fans, the long holes can effectively capture it and guide it into the sound-absorbing layer for treatment; and for the turbulent noise caused by the wind speed at the outlet, the long holes can also play a similar role and effectively weaken this part of the noise. Therefore, a reasonable long hole setting can ensure that sound waves of various frequencies have the opportunity to enter the sound-absorbing cavity, thereby achieving a more comprehensive noise absorption effect.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This utility model Figure 2 The structural diagram at A in the middle;

[0022] Figure 4 This is a schematic diagram of the structure of the utility model in which the hair dryer body is removed and the filter layer structure is disassembled;

[0023] Figure 5 It is a structural schematic diagram of a conical inner shell, an air outlet inner shell, a high-speed fan and a heating module in the utility model.

[0024] Figure 6 It is a sound wave radiation diagram when the hair dryer of the utility model is in operation.

[0025] The reference numerals and names in the figures are as follows:

[0026] Hair dryer body 10, air inlet 11, air outlet 12, high-speed fan 13, heating module 14, conical inner shell 20, long hole 21, sound absorbing layer 22, skeleton structure 23, fixing sleeve 24, guide edge 25, filter layer structure 30, first magnetic body 31, filter screen sleeve 32, outer protective frame 33, second magnetic body 34, air outlet inner shell 40, snap-on structure 41, guide air outlet mesh port 42. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 In an embodiment of the utility model, a hair dryer that uses a conical sound-absorbing structure to reduce the noise of use includes a hair dryer body 10 with an air inlet 11 and an air outlet 12. A fluid channel is provided in the hair dryer body 10, which flows from the air inlet 11 to the air outlet 12. A high-speed fan 13 and a heating module 14 are provided in the fluid channel. The heating module 14 is provided at the air outlet 12 and the high-speed fan 13. When in use, the high-speed fan 13 runs to generate a directional air fluid in the fluid channel. If the directional air fluid is to be heated, the heating module is started so that the directional air fluid flows through the heating module to form a directional hot air fluid, which is finally blown out from the air outlet 12 to act on the user's hair, thereby achieving the effect of drying and cutting hair. On the hair dryer body 10, a handle is also provided for the user to hold based on the traditional structure, and corresponding buttons are provided on the surface of the handle for the user to drive the high-speed fan 13 and the heating module 14. A circuit module is provided inside the handle to connect the high-speed fan 13, the heating module 14 and the buttons to achieve power and signal transmission. The tail of the handle is connected to the circuit module with wires to achieve power supply. On this basis, a conical inner shell 20 is arranged in the fluid channel, the end of the conical inner shell 20 with a small opening is connected to the air inlet 11, and the end of the conical inner shell 20 with a large opening is connected to the high-speed fan 13, and a plurality of evenly distributed long holes 21 are opened around the wall surface of the conical inner shell 20, and a sound absorption cavity is formed between the conical inner shell 20 and the inner wall of the hair dryer body 10, and a sound absorption layer 22 is arranged in the sound absorption cavity.

[0029] In the above technical solution, by setting the internal structure of the hair dryer body 10, that is, cleverly arranging the conical inner shell 20 between the air inlet 11 and the high-speed fan 13, a sound absorption cavity is successfully formed between the conical inner shell 20 and the hair dryer body 10. This design brings many significant beneficial effects.

[0030] First, the sound absorbing layer 22 arranged in the sound absorbing cavity can play a strong sound absorbing role. The sound absorbing layer 22 is made of sound absorbing cotton material or other materials that can have sound absorbing effect. When the sound waves generated by the hair dryer are working, they enter the sound absorbing cavity through the long hole 21. The sound absorbing layer 22 can efficiently absorb and transform the sound wave energy, thereby greatly reducing the propagation of noise.

[0031] Secondly, the use of a conical structure has unique advantages. This conical design can cleverly guide the propagation path of sound waves, so that the sound waves are constantly reflected and refracted in the conical inner shell 20, thereby effectively reducing the possibility of the sound waves being directly transmitted.

[0032] Thirdly, a long hole 21 structure is provided. Preferably, the long hole 21 is elongated along the flow direction of the fluid channel. The long hole 21 can effectively capture the high-frequency noise generated by the high-speed fan 13 and introduce it into the sound-absorbing layer 22 for processing; and the long hole 21 can also play a similar role in the turbulent noise caused by the wind speed of the air outlet 12, and effectively weaken this part of the noise. Therefore, a reasonable setting of the long hole 21 can ensure that sound waves of various frequencies have the opportunity to enter the sound-absorbing cavity, thereby achieving a more comprehensive noise absorption effect.

[0033] Fourthly, the guide edge 25 can guide the airflow to pass through the long hole 21 more smoothly into the sound absorption chamber. When the airflow enters the long hole 21, the guide edge 25 can reduce the turbulence of the airflow, so that the airflow can enter the sound absorption chamber more orderly, thereby improving the sound absorption effect. The guide edge 25 can enhance the structural strength around the long hole 21. Since the existence of the long hole 21 will weaken the structure of the conical inner shell 20 to a certain extent, the molding of the guide edge 25 increases the support of this part, reducing the possibility of deformation or rupture of the long hole 21 due to vibration or pressure, thereby ensuring the stability and durability of the conical inner shell 20. When the hair dryer generates complex sound waves at high speed, the guide edge 25 can guide and absorb certain high-frequency and difficult-to-process sound waves, thereby significantly reducing harsh noise.

[0034] In summary, this series of innovative structural designs can significantly improve the noise control effect of the hair dryer, bringing users a quieter and more comfortable experience. Figure 6 , is the sound wave radiation diagram, and its color from blue to red represents the sound pressure level dB. The color close to red on the diagram indicates a loud sound, and the color close to blue indicates a small sound. It can be clearly seen that this structure can effectively reduce the transmission of noise.

[0035] Please refer to Figure 2 , Figure 4 and Figure 5In the embodiment of the utility model, it is further proposed that one end of the conical inner shell 20 extends along the air inlet 11 to the outside of the hair dryer body 10 and forms a skeleton structure 23, and a filter layer structure 30 is covered on the skeleton structure 23; this skeleton structure 23 extending to the outside and the covering filter layer can effectively block external impurities and dust from entering the hair dryer, thereby protecting key components such as the high-speed fan 13 inside the hair dryer, reducing the risk of failure and damage caused by the entry of impurities, and extending the service life of the hair dryer. The filter layer structure 30 can also perform preliminary rectification and combing on the airflow entering the hair dryer, that is, when the airflow passes through the filter layer, the turbulence of the flow will be improved to a certain extent, so that the airflow entering the hair dryer is more stable and uniform, which helps to reduce the additional noise caused by the unstable airflow and further improves the noise reduction effect of the hair dryer; it is further proposed that the filter layer structure 30 includes a first magnetic body 31 arranged at the end of the skeleton structure 23, a filter sleeve 32 coveringly sleeved on the outside of the skeleton structure 23, an outer protective frame 33 sleeved on the outside of the filter sleeve 32, and a second magnetic body 34 fixed on the outer protective frame 33 and magnetically matched with the first magnetic body 31, so that the filter layer structure 30 is also easy to clean and replace. When the filter layer accumulates too many impurities and affects the air intake effect, the user can easily disassemble and clean the filter layer, or directly replace the new filter layer to maintain the good performance of the hair dryer; in summary, this limitation not only enhances the protective performance of the hair dryer and optimizes the airflow state, but also facilitates maintenance and maintenance, bringing more convenience and better use experience to the user.

[0036] Please refer to Figure 3 In the embodiment of the utility model, it is further proposed that the inner side between the skeleton structure 23 and the conical inner shell 20 is in an arc surface transition, so that the skeleton structure 23 corresponds to the caliber of the air inlet 11, and the conical inner shell 20 forms a smaller caliber than the air inlet 11 through the arc surface transition. Through this setting, the resistance of the airflow when entering the hair dryer can be effectively reduced, and the airflow can flow more smoothly along the arc surface, avoiding turbulence and vortex caused by sudden shape changes, thereby reducing the additional noise caused by airflow obstruction. And the skeleton structure 23 corresponds to the caliber of the air inlet 11, which can ensure the maximum utilization of the air inlet area and increase the air intake. This helps to reduce the noise caused by excessively increasing the fan speed in order to increase the wind force while ensuring the wind output of the hair dryer. In addition, the conical inner shell 20 forms a smaller caliber than the air inlet 11 through the arc surface transition, which can play a certain role in airflow compression. After entering the interior of the hair dryer, the compressed airflow will increase the flow rate and pressure, thereby increasing the wind speed of the air outlet 12 without increasing the fan power and speed, and enhancing the blowing effect. At the same time, reasonable airflow compression can also reduce the noise caused by excessive dispersion of airflow.

[0037] Please refer to Figure 4-5In the embodiment of the utility model, it is further proposed that the other end of the conical inner shell 20 extends between the high-speed fan 13 and the inner wall of the hair dryer body 10 to form a fixing sleeve 24 for fixing and installing the high-speed fan 13. The fixing sleeve 24 formed by the extension of the conical inner shell 20 provides a stable installation position for the high-speed fan 13, ensuring that the high-speed fan 13 can maintain a stable operating state during operation, reducing the additional noise and failure risk caused by vibration; the hair dryer body 10 is also equipped with an air outlet inner shell 40, and a buckle structure 41 is provided between the air outlet inner shell 40 and the fixing sleeve 24, so that the air outlet inner shell 40 and the fixing sleeve The air outlet inner shell 40 and the fixing sleeve 24 are fixed by snapping, and the snap-fit ​​structure 41 between the air outlet inner shell 40 and the fixing sleeve 24 realizes a fast, convenient and stable snap-fit ​​fixation. This connection method is not only convenient for installation and disassembly, and convenient for later maintenance and repair, but also can ensure that there will be no loosening or displacement between the air outlet inner shell 40 and the fixing sleeve 24 when the hair dryer is working, thereby ensuring the stable transmission of airflow and reducing the noise caused by structural instability; and the heating module 14 is installed inside the air outlet inner shell 40, which is conducive to concentrating heat and improving thermal efficiency, and at the same time, it can also better protect the heating module 14 and prevent it from being affected and damaged by external factors. In addition, the air outlet inner shell 40 can effectively isolate heat and prevent heat from being transferred to other parts of the hair dryer body 10, thereby reducing the risk of thermal damage to other components and extending the service life of the entire hair dryer. The air outlet inner shell 40 is connected to the air outlet 12, and the heating module 14 is installed inside the air outlet inner shell 40. A guide air outlet mesh port 42 is provided at one end of the air outlet inner shell 40 connected to the air outlet 12. The setting of the guide air outlet mesh port 42 can guide and rectify the blown airflow, so that the airflow is blown out from the air outlet 12 more concentratedly and evenly. This can not only improve the blowing effect, but also reduce the noise caused by the turbulent airflow.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A hair dryer that uses a conical sound-absorbing structure to reduce noise during use, comprising a hair dryer body (10) with an air inlet (11) and an air outlet (12), a fluid channel is provided in the hair dryer body (10), the fluid enters along the air inlet (11) and flows out of the air outlet (12), a high-speed fan (13) and a heating module (14) are provided in the fluid channel, and the heating module (14) is provided at the air outlet (12) and the high-speed fan (13), wherein: A conical inner shell (20) is arranged in the fluid passage, the end of the conical inner shell (20) with a small opening is connected to the air inlet (11), and the end of the conical inner shell (20) with a large opening is connected to the high-speed fan (13), and a plurality of evenly distributed long holes (21) are arranged around the wall surface of the conical inner shell (20), a sound absorption cavity is formed between the conical inner shell (20) and the inner wall of the hair dryer body (10), and a sound absorption layer (22) is arranged in the sound absorption cavity.

2. A hair dryer using a conical sound absorbing structure to reduce noise according to claim 1, characterized in that: The long hole (21) is elongated along the flow direction of the fluid channel, and a flow guide edge (25) is formed along the long hole (21) on the outer wall of the conical inner shell (20).

3. A hair dryer utilizing a conical sound absorbing structure to reduce noise in use according to claim 1, characterized in that: The sound absorbing layer (22) is made of sound absorbing cotton material.

4. A hair dryer utilizing a conical sound absorbing structure to reduce noise in use according to claim 1, characterized in that: One end of the conical inner shell (20) extends along the air inlet (11) to the outside of the hair dryer body (10) and forms a skeleton structure (23), and a filter layer structure (30) is covered on the skeleton structure (23).

5. A hair dryer utilizing a conical sound absorbing structure to reduce noise in use according to claim 4, characterized in that: The inner side between the skeleton structure (23) and the conical inner shell (20) forms a curved surface transition, so that the skeleton structure (23) corresponds to the caliber of the air inlet (11), and the conical inner shell (20) forms a caliber smaller than that of the air inlet (11) through the curved surface transition.

6. A hair dryer utilizing a conical sound absorbing structure to reduce noise in use according to claim 4, characterized in that: The filter layer structure (30) comprises a first magnetic body (31) arranged at the end of the skeleton structure (23), a filter screen sleeve (32) sleeved on the outside of the skeleton structure (23), an outer protective frame (33) sleeved on the outside of the filter screen sleeve (32), and a second magnetic body (34) fixed on the outer protective frame (33) and magnetically matched with the first magnetic body (31).

7. A hair dryer utilizing a conical sound absorbing structure to reduce noise in use according to claim 4, characterized in that: The other end of the conical inner shell (20) extends between the high-speed fan (13) and the inner wall of the hair dryer body (10) to form a fixing sleeve (24) for fixing and installing the high-speed fan (13).

8. A hair dryer utilizing a conical sound absorbing structure to reduce noise in use according to claim 7, characterized in that: An air outlet inner shell (40) is also installed inside the hair dryer body (10), and a snap-fit ​​structure (41) is provided between the air outlet inner shell (40) and the fixing sleeve (24) so ​​that the air outlet inner shell (40) and the fixing sleeve (24) are snap-fitted and fixed, the air outlet inner shell (40) is docked with the air outlet (12), and the heating module (14) is installed inside the air outlet inner shell (40), and a guide air outlet mesh opening (42) is provided at one end of the air outlet inner shell (40) docked with the air outlet (12).

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