CN217408058U - Electric hair drier - Google Patents

Abstract

The application provides a hairdryer, the hairdryer includes: the electric hair drier comprises: the main cylinder comprises a side wall cylinder and a front end cover fixed on the side wall cylinder, the side wall cylinder and the front end cover enclose a main cavity, and the front end cover comprises an air outlet communicated with the main cavity; the front end cover is provided with a plurality of vibration silencing cavities communicated with the main cavity body. Through the mode, the noise can be effectively reduced.

Description

Electric hair drier

Technical Field

The application belongs to the household electrical appliances field, especially relates to a hairdryer.

Background

The electric hair drier is a common household appliance, and is mainly used for drying and shaping hair by taking away heat generated by an electric heating element at a high speed through a fan.

Because the hairdryer is nearer than people's ear at the use, therefore the noise has direct influence to user's experience. In addition, the common hair dryers in the market have relatively large noise.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an electric hair drier to solve the problem that the noise generated by the existing electric hair drier is larger.

In a first aspect, an embodiment of the present application provides a hair dryer, including: a hair dryer, comprising:

the main cylinder comprises a side wall cylinder and a front end cover fixed on the side wall cylinder, the side wall cylinder and the front end cover enclose a main cavity, and the front end cover comprises an air outlet communicated with the main cavity;

wherein, the front end cover is provided with a plurality of vibration silencing cavities communicated with the main cavity body.

According to an embodiment provided by the present application, the vibration silencing cavity comprises a through hole communicated with the main cavity and a silencing cavity communicated with the through hole.

According to an embodiment provided by the present application, the aperture of the muffling hole is greater than or equal to 2mm and less than or equal to 5 mm.

According to an embodiment that this application provided, a plurality of through-hole is around the axis interval setting of main cavity is on the inside wall of front end housing.

According to an embodiment of the present invention, the application,

a plurality of said through holes being of equal or different size, and/or

The through holes are arranged at equal intervals.

According to an embodiment provided by the present application, a plurality of the sound-deadening cavities form an annular cavity.

According to an embodiment provided herein, the front end cap includes a body portion and an annular cap portion;

the annular cover body is sleeved on the main body part and blocks the annular groove to form the annular cavity.

According to an embodiment of the present application, the groove opening surface of the ring groove is parallel to a cross section of the main cavity perpendicular to the central axis.

According to an embodiment provided herein, the annular cover portion includes a sound damping layer for sealing the annular groove.

According to an embodiment provided by the application, the outer side wall of the main body part is provided with an avoiding depressed part, a first buckling piece is arranged in the avoiding depressed part, the inner wall of the annular cover body part is provided with a second buckling piece, and the annular cover body part is arranged on the main body part in a sleeved mode through the cooperation of the second buckling piece and the first buckling piece.

In the hairdryer that this application embodiment provided, through be provided with the amortization chamber of vibration in the front end housing at the hairdryer to make the noise when the transmission, can be by some energies of vibration amortization chamber absorption, thereby can the effectual noise that reduces whole fan.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can also be derived from them without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic perspective view of a hair dryer according to a first embodiment of the present application.

Fig. 2 is a cross-sectional view of the hair dryer of fig. 1.

Fig. 3 is a schematic perspective view of the front end cap of the hair dryer shown in fig. 1.

Fig. 4 is a perspective view of the main body portion of the front end cap of fig. 3.

FIG. 5 is a perspective view of the annular cap portion of the front end cap of FIG. 3.

Fig. 6 is a cross-sectional view of the front end cap.

Fig. 7 is a schematic view of a vibration canceling chamber.

Fig. 8 is a schematic view of the hair dryer of fig. 1 from another angle.

Fig. 9 is a schematic structural view of the perforated sound-deadening plate in the hair dryer shown in fig. 2.

Fig. 10 is a schematic view of the heating assembly of the hair dryer of fig. 2.

Fig. 11 is a schematic view of the structure of the partition plate in the heating assembly shown in fig. 10.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides an electric hair drier to solve the problem that noise is high in the existing electric hair drier. The following description will be made with reference to the accompanying drawings.

As shown in fig. 1-11, the present application provides a hair dryer 10, wherein the hair dryer 10 can be a wire hair dryer, or a wireless hair dryer, without limitation, the hair dryer 10 includes a main body 100, wherein the main body 100 includes a side wall cylinder 110 and a front cover 600 fixed to one end of the side wall cylinder 110, the side wall cylinder 110 and the front cover 600 together enclose a main cavity 130, and optionally, the main body 100 further includes a second end 130 fixed to the other end of the side wall cylinder 110, the front cover 600 and the second end 130 together enclose the main cavity 130.

As shown in fig. 3 and 6, the front cover 600 includes a plurality of vibration-damping chambers 610 communicating with the main chamber 130.

Optionally, by providing the vibration muffling cavity 610, the abrupt change of the inner wall pipe interface of the vibration muffling cavity 610 or the side connection resonant cavity and the like causes the impedance change surface to generate reflection and interference of sound energy in the sound propagation process, so that the sound energy radiated outwards by the muffler can be reduced, the muffling effect is achieved, and the noise can be effectively reduced.

In the above embodiment, the vibration silencing cavity 610 is arranged in the front end cover 600 of the hair dryer 10, so that when noise is transmitted, some energy can be absorbed by the vibration silencing cavity 610, and thus the noise of the whole fan can be effectively reduced.

As shown in fig. 6, vibration-deadening chamber 610 includes through-hole 611 communicating with main chamber 130 and sound-deadening chamber 612 communicating with through-hole 611.

Optionally, the volume of sound-deadening chamber 612 is larger than that of through hole 611, and the smaller chamber 612 is a semi-closed area and is only communicated with through hole 611.

As shown in fig. 7, in an alternative embodiment, a cross section of the through hole 611 perpendicular to the central axis direction may be circular, and an aperture d of the through hole 611 is greater than or equal to 2mm, less than or equal to 5mm, and may be 2mm, 3mm, or 5mm, which is not limited herein. In a specific scene, the 1/12 with the selected aperture as the wavelength can achieve a better sound absorption effect in consideration of the resonance wavelength of the resonance noise, so that the preset aperture is set.

In other embodiments, the cross section of the through hole 611 perpendicular to the central axis may have other shapes, and other predetermined apertures (longest inner distance) may be correspondingly provided, which is not limited herein.

In an alternative embodiment, a plurality of through holes 611 are provided on the inner sidewall 601 of the front end cover 600 at intervals around the central axis of the main cavity 130. In an alternative embodiment, the centers of the through holes 611 are all located on the same ring, and specifically, may be located on the same circle, ellipse, or other regular polygon.

In an alternative embodiment, the inner sidewall 601 may be an injection molded part with a thickness t of 3mm, which is not limited herein.

In an alternative embodiment, the through holes 611 may be specifically located in a middle region of the inner sidewall along the central axis direction, so as to achieve a better noise reduction effect.

In an alternative embodiment, the size of the through holes 611 may be the same or different, and is not limited herein.

In other embodiments, the plurality of through holes 611 may be arranged at equal intervals, and optionally, the interval between adjacent through holes 611 (the interval between the centers of adjacent through holes 611) may be greater than 5 times and 5 times or more the aperture of the through holes 611.

In an alternative embodiment, the number of the through holes 611 may specifically be 5 to 10, and specifically may be 5, 8, or 10, which is not limited herein.

In an alternative embodiment, a plurality of sound-deadening cavities 612 form annular cavity 613, that is, a plurality of sound-deadening cavities 612 communicate with each other to form annular cavity 613 around inner sidewall 601, and the cross-sectional size of the entire annular cavity 613 perpendicular to the extending direction is the same.

As shown in fig. 3-5, the front end cap 600 includes a body portion 630 and an annular cap portion 640;

the outer sidewall 602 of the main body 630 is provided with a ring groove 603, and the annular cap 640 is sleeved on the main body 630 and seals the ring groove 603 to form an annular cavity 613.

In an alternative embodiment, one end of the outer sidewall 602 is fixed to the inner sidewall 601, and the other end of the outer sidewall 602 is spaced apart from the inner sidewall 601 to form the ring groove 603.

In an alternative embodiment, the notch surface of the groove 603 is parallel to a cross-section of the main cavity 130 perpendicular to the central axis. Optionally, the annular cover 640 is sleeved on the main body 630 and seals the notch surface of the ring groove 603 so that the ring groove 603 forms an annular cavity 613.

As shown in fig. 5, annular cover portion 640 includes a sound-deadening layer 641 for blocking annular groove 603, and this sound-deadening layer 641 can block annular groove 603 on the one hand and widen the sound-absorbing frequency range of annular chamber 613 on the other hand.

In an alternative embodiment, the sound-deadening layer 641 may be divided into a plurality of sections, and a protrusion 642 is provided between each section, and the sound-deadening layer 641 and the protrusion 642 block the annular groove 603.

Optionally, the protrusion 642 can be snapped into the groove 603 to enhance sealing of the groove 603.

As shown in fig. 4, an outside wall 602 of the main body 630 is provided with an avoiding recess 631, a first latch 632 is provided in the avoiding recess 631, a second latch 633 is provided on an inside wall of the annular cover 640, and the annular cover 640 is sleeved on the main body 630 by the cooperation of the second latch 633 and the first latch 632.

Optionally, the avoiding recess 631 may be specifically configured to avoid the annular cover portion 640, so that when the annular cover portion 640 is sleeved on the main body portion 630, appearance surfaces of the annular cover portion 640 and the main body portion 630 are matched with each other, that is, a common appearance surface is formed.

As shown in fig. 1 and 2, the hair dryer 10 further includes a handle portion 200, a heating assembly 300, and a blower 400.

As shown in fig. 2, the front end cap 600 includes an air outlet 121 communicating with the main cavity 130, and the sidewall 110 includes a vent 111 communicating with the main cavity 130.

As shown in fig. 1 and 2, the handle portion 200 is fixed to the sidewall cylinder 110, and the handle portion 200 includes a ventilation channel 210 communicating with the ventilation opening 111 and an air inlet 220 communicating with the ventilation channel 210. The heating assembly 300 is disposed within the main chamber 130, and the optional heating assembly 300 may heat the airflow. The blower 400 is disposed in the ventilation channel 210, and the blower 400 can be used to drive the airflow to enter from the air inlet 220, and the airflow is blown out through the air outlet 121 after sequentially passing through the ventilation channel 210, the ventilation opening 111, the main cavity 130, and the heating assembly 300.

Specifically, the airflow entering from the air inlet 220 and passing through the ventilation channel 210, the ventilation opening 111 and the main cavity 130 in sequence is heated into a hot airflow after passing through the heating assembly 300, and is blown out from the air outlet 121, so as to form hot air capable of being dried.

In an exemplary embodiment, the diameter D2 of the outlet opening 121 and the diameter D1 of the inlet opening 220 are both smaller than the diameter D of the main cavity 130. Alternatively, the diameter in this document does not refer to only the diameter of a circle, but refers to its maximum width in cross section perpendicular to the axis.

If the diameters of the air outlet 121 and the air inlet 220, i.e., the maximum widths thereof, are circular, the diameters thereof are diagonal if the shapes thereof are rectangular, and the diameter of the main chamber 130 is the maximum width of the cross section of the main chamber 130. Similarly, it is a diameter if it is circular in shape, and a diagonal if it is rectangular.

In the above embodiment, the diameter D2 of the air outlet 121 and the diameter D1 of the air inlet 220 are set to be smaller than the diameter D of the main cavity 130, even set to be much smaller than the diameter D of the main cavity 130, so that the function of noise reduction can be achieved. Wherein, after fan 400 and air current hit the inner wall etc. of main cylinder 100 and handle portion 200 and produce the noise, its sound wave is when getting into main cavity 130, because its cross section increases suddenly to make its medium density change, thereby the sound wave that gets into main cavity 130 can attenuate, similarly, when the sound wave goes out from air outlet 121 from main cavity 130, because the sudden reduction of cross section, its medium density also changes, thereby the sound wave that makes going out from main cavity 130 can attenuate. Namely, the air outlet 121, the air inlet 220 and the main cavity 130 are integrally formed into a reactive muffler, thereby effectively achieving noise reduction.

As shown in fig. 2, the air inlet 220 is disposed at an end of the handle portion 200 away from the main cylinder 100. Alternatively, the air inlet 220 may be a section of channel along the length direction of the handle portion 200, and the channel is provided with a plurality of small holes, so as to form the air inlet 220.

As shown in fig. 2, in a particular embodiment, the diameter D3 of the vent 111 is smaller than the diameter D of the main cavity 130. Optionally, the diameter of the ventilation opening 111 may be the same as the diameter of the air inlet 220, or smaller than the diameter of the air inlet 220, which is not limited herein.

As shown in fig. 2 and 10, the hair dryer 10 further includes a perforated sound-deadening plate 500 located on a side of the heating assembly 300 away from the outlet opening 121. And the perforated sound damping plate 500 is positioned between the heating assembly 300 and the vent 111.

Optionally, the perforated sound absorption plate 500 may be adapted to the cross section of the main cavity 130, and the perforated sound absorption plate 500 may also be in a circular plate shape, and the outer wall of the perforated sound absorption plate abuts against the inner wall of the main cavity 130.

As shown in fig. 9, the perforated sound-absorbing panel 500 includes a main panel 510 and a plurality of sound-absorbing holes 520 disposed on the main panel 510, wherein the cross section of the main panel 510 is adapted to the main cavity 130, so that the main panel 510 can fit between the inner walls of the main cavity 130. The plurality of muffling holes 520 extend through the entire main plate 510, thereby facilitating the flow of air through the plurality of muffling holes 520.

Optionally, the muffling hole 520 may be a circular hole, a rectangular hole, or another polygonal hole, which is not limited herein.

Alternatively, a plurality of muffling holes 520 are formed in the main plate 510 in an array, and the muffling holes 520 are formed in the inner wall thereof with a muffling layer, so that sound energy is converted into heat energy due to frictional resistance and viscous force and dissipated when the sound wave passes through the muffling holes 520. Thereby achieving the silencing effect. Alternatively, the material of the porous noise reduction plate 500 may be glass wool or ceramic, which is not limited herein.

Optionally, by providing the perforated noise reduction plate 500, aerodynamic noise at medium and high frequencies can be effectively reduced, thereby effectively reducing overall noise.

As shown in fig. 10, the heating assembly 300 includes a plurality of isolation plates 310 and a heating band 320, wherein the ends of the isolation plates 310 are arranged around the main axis of the main chamber 130, the distance between adjacent isolation plates 310 is gradually increased along the direction away from the main axis, and the heating band 320 is arranged on the isolation plates 310 and spirally arranged around the main axis.

As shown in fig. 11, a plurality of locking grooves 311 are provided in the middle of the plurality of partition plates 310, and the plurality of partition plates 310 are engaged with each other through the plurality of locking grooves 311.

As shown in fig. 10 and 11, the isolation board 310 is further provided with a plurality of tape passing grooves 312 along both sides in the major axis direction between the card slot 311 and the end portion, and the tape passing grooves 312 are used for placing the heating tape 320.

Alternatively, the conductive tape 320 may be formed in a spiral shape from the inside to the outside by sequentially passing through the over-grooved slots 312 of the plurality of separator plates 310 and the over-grooved slots 312 of the adjacent separator plates 310 continuously passing therethrough. Because the passing belt grooves 312 on the adjacent isolation plates 310, through which the conductive belt 320 continuously passes, are in the shape of multiple turns, the isolation plates 310 generate supporting acting force on the conductive belt 320, so that the supporting span of the conductive belt 320 is small, the natural frequency is high, and the vibration and noise generated in the process of blowing the conductive belt 320 by the air flow can be reduced.

In an alternative embodiment, the thickness direction of the heating tape 320 is arranged perpendicular to the main axis. In alternative embodiments, the heating belt 320 is in the form of a sheet belt or sheet, i.e., the heating belt 320 has a thickness that is less than or can be considered to be much less than its width.

Alternatively, the width of the heating belt 320 is greater than or equal to 2.0mm, less than or equal to 20mm, and specifically may be 2.0mm, 10mm or 20mm, and the thickness is greater than or equal to 0.005mm, less than or equal to 0.05mm, and specifically may be 0.005mm, 0.01mm or 0.05mm, which are not limited herein.

Alternatively, the conductive strip 320 may be viewed as having a high length, a low width, and an extremely low subsequent sheet-like structure. Its thickness direction is arranged perpendicular to the main axis and its width direction is parallel to the main axis of the main chamber 130, i.e. its main surface may also be parallel to the main axis of the main chamber 130. Through such setting, on the one hand make whole heating band 320 and air current have great contact surface for the air current is when flowing through, can take away heating band 320 most heat, and on the other hand heating band 320 is towards the side surface area of air current direction very little, therefore has that the windage is little, characteristics that the noise is low. Meanwhile, compared with the resistance wire, the conductive belt 320 has a large heat dissipation area and a good energy-saving effect.

To sum up, the utility model provides a hairdryer 10 is through being provided with vibration noise elimination chamber 610 in hairdryer 10's front end housing 600 to make the noise when the transmission, can be absorbed some energy by vibration noise elimination chamber 610, thereby can the whole fan of effectual reduction noise.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. The ice making device provided by the embodiments of the present application is described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A hair dryer, characterized in that it comprises:

the main cylinder comprises a side wall cylinder and a front end cover fixed on the side wall cylinder, the side wall cylinder and the front end cover enclose a main cavity, and the front end cover comprises an air outlet communicated with the main cavity;

wherein, the front end cover is provided with a plurality of vibration silencing cavities communicated with the main cavity body.

2. The hair dryer of claim 1, wherein said vibration dampening chamber comprises a through hole communicating with the main chamber and a dampening chamber communicating with said through hole.

3. Electric hair dryer according to claim 2, characterized in that the aperture of said through holes is greater than or equal to 2mm, less than or equal to 5 mm.

4. A hair dryer according to any of claims 2-3, wherein a plurality of said through holes are provided on the inner side wall of said front end cover at intervals around the central axis of said main housing.

5. A hair dryer according to claim 4,

a plurality of said through holes being of equal or different size, and/or

The through holes are arranged at equal intervals.

6. A hair dryer according to claim 4, characterized in that a plurality of said silencing cavities form a ring-shaped cavity.

7. The hair dryer of claim 6, wherein said front end cap comprises a main body portion and an annular cap portion;

the annular cover body is sleeved on the main body part and blocks the annular groove to form the annular cavity.

8. A hair dryer according to claim 7, characterized in that the notch surface of said annular groove is parallel to the cross section of said main chamber perpendicular to the central axis.

9. A hair dryer according to claim 7, characterized in that said annular cover portion comprises an acoustic layer for blocking said annular groove.

10. The electric hair drier according to claim 7, wherein an avoiding recess is formed in the outer side wall of the main body part, a first fastener is arranged in the avoiding recess, a second fastener is arranged on the inner wall of the annular cover part, and the annular cover part is sleeved on the main body part through the cooperation of the second fastener and the first fastener.

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