Air inlet noise reduction blower

Abstract

The utility model discloses an air inlet noise reduction blower which comprises a handle and a blower body, the blower body comprises a shell, a motor and fan blades, the motor and the fan blades are arranged in the shell, an end cover is arranged at the air inlet end of the shell, and a plurality of air inlet holes are formed in the side face of the end cover; and a first annular silencing net is arranged in the end cover. According to the air inlet noise reduction blower, the purpose of reducing the operation noise of the blower is achieved, and the length of the blower body of the blower is not increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric hair dryer, especially to an air inlet noise reduction hair dryer. BACKGROUND

[0002] The hair dryer (or called "electric hair dryer" and other names) produces relatively large noise when running. In the prior art, the scheme to solve the running noise of the hair dryer is usually to set a relatively long body. Although the long body plays a certain role in airflow stabilization and noise reduction, it also brings many shortcomings, for example: the longer body leads to the overall size of the product becoming larger, and the longer body may increase the resistance of air flow and thus increase the load of the motor. In view of the above technical problems, the present application proposes a new technical scheme to avoid the hair dryer body being too long while achieving the purpose of reducing the running noise of the hair dryer. SUMMARY

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an air inlet noise reduction hair dryer, aiming to solve the technical problem of reducing noise by setting a longer body in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] An air inlet noise reduction hair dryer comprises a handle and a hair dryer body, the hair dryer body comprises a shell, a motor and a fan blade arranged in the shell, and an end cover is arranged at the air inlet end of the shell, the side surface of the end cover is provided with a plurality of air inlet holes, and a first annular sound absorbing net is arranged in the end cover.

[0006] Further, the first annular sound absorbing net is provided with a second annular sound absorbing net.

[0007] Further, the second annular sound absorbing net is provided with a third sound absorbing net at the outlet end.

[0008] Further, the third sound absorbing net is a perforated plate sound absorbing net.

[0009] Further, the end cover, the first annular sound absorbing net and the second annular sound absorbing net are coaxially arranged.

[0010] Further, the air inlet end of the shell is provided with a bracket, the bracket comprises a body and a plurality of supporting rods arranged on the body, the first annular sound absorbing net is sleeved on the outer side of each supporting rod, and the second annular sound absorbing net is located on the inner side of the bracket.

[0011] Beneficial effects: the utility model provides a kind of air inlet noise reduction hair dryer, compared with prior art, by being provided with end cap in the air inlet end of shell, the side surface of this end cap is equipped with several air inlet holes, there is the first annular sound-absorbing net in end cap, to realize the purpose of reducing the running noise of hair dryer, and does not cause the length increase of the fuselage of hair dryer.Further, by setting second annular sound-absorbing net and third sound-absorbing net, the effect of noise reduction is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 For the stereogram of air inlet noise reduction hair dryer Figure 1 .

[0013] Figure 2 For Figure 1 the local enlarged view of S area in the middle.

[0014] Figure 3 For the stereogram of air inlet noise reduction hair dryer Figure 2 , end cap is not drawn in the drawing.

[0015] Figure 4 For the stereogram of air inlet noise reduction hair dryer Figure 3 , end cap and first annular sound-absorbing net are not drawn in the drawing.

[0016] Figure 5 For the stereogram of air inlet noise reduction hair dryer Figure 4 , end cap, first annular sound-absorbing net and second annular sound-absorbing net are not drawn in the drawing.

[0017] Figure 6 For the front view of third sound-absorbing net. DETAILED DESCRIPTION

[0018] The utility model provides a kind of air inlet noise reduction hair dryer, to make the purpose, technical scheme and effect of the utility model more clear, definite, the following further detailed description of the utility model is made.It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0019] Please refer to Figures 1 to 6 , the utility model provides a kind of air inlet noise reduction hair dryer.Drawings are only used to explain the structure principle, not proportional to actual product.Drawings have only drawn the structure related to the invention point of the present application, for some conventional structures (for example: motor, fan blade etc.) of hair dryer, have not been specifically drawn, and the description will not be repeated on these conventional structures.The "first", "second" and other expressions described in this paper are only different naming to similar structure to facilitate exposition, not to limit the present application.The "several" described in this paper refers to uncertain quantity, because the number of the structure referred to is not invention point, so it is not specifically limited.

[0020] The air inlet noise reduction hair dryer comprises a handle 1 and a hair dryer body, the hair dryer body comprising a shell 2, and a motor and a fan blade (not shown in the figure) arranged in the shell. Unlike the prior art, in the present application, the air inlet end of the shell is provided with an end cover 3, the side surface of the end cover is provided with a plurality of air inlet holes 310; the end cover is provided with a first annular sound absorbing net 41. The above-mentioned fan blade is also called "impeller" and the like, which is not limited here.

[0021] As can be observed from the drawings, the end cover comprises an annular body 31 and an end plate 32 (preferably detachably connected). Since the end plate is not provided with mesh holes, air cannot enter from the end of the end cover, but only from the side air inlet holes 310, and further passes through the first annular sound absorbing net to achieve the purpose of reducing the noise of the hair dryer in operation. The annular body of the above-mentioned end cover is detachably connected (preferably snap-connected or screw-connected) with the shell.

[0022] Further, the first annular sound absorbing net is provided with a second annular sound absorbing net 42. This arrangement further improves the noise reduction effect without increasing the length of the hair dryer body (i.e. the length of the hair dryer body).

[0023] Further, the outlet end of the second annular sound absorbing net is provided with a third sound absorbing net 43.

[0024] Preferably, the third sound absorbing net is a perforated plate type sound absorbing net, which is arranged at the air inlet end of the shell, can provide a relatively large air flow cross section, ensure that air can pass smoothly, and can further improve the noise reduction effect. Since the third sound absorbing net is a perforated plate type sound absorbing net, it occupies a very small installation space and will not cause the length of the hair dryer body to increase; since the perforated plate type third sound absorbing net is located at the air inlet end of the shell (also at the outlet end of the second annular sound absorbing net), this leaves enough space inside the end plate 32 to install a PCB board (such as shown as 50 in the figure) and the like, so that the installation of the PCB board and the sound absorbing net do not interfere with each other, and the third sound absorbing net can ensure good sound absorbing effect. Figure 4

[0025] Preferably, the end cover 3, the first annular sound absorbing net 41, and the second annular sound absorbing net 42 are coaxially arranged. This arrangement makes the air passing through the end cover, the first annular sound absorbing net and the second annular sound absorbing net uniformly distributed in the circumferential direction, and the airflow is relatively stable, which is conducive to reducing noise.

[0026] Preferably, the third sound absorbing net 43 and the second annular sound absorbing net 42 are also coaxially arranged, which ensures compact structure and is also conducive to stable airflow.

[0027] ​Further, the air inlet end of the shell is provided with a support 5, which comprises a body 51 and a plurality of support rods 52 arranged on the body; the first annular sound-absorbing mesh is arranged outside the support rods, and the second annular sound-absorbing mesh is arranged inside the support. This arrangement makes the first annular sound-absorbing mesh easy to install and the support can well support the first annular sound-absorbing mesh.

[0028] The utility model is further illustrated by the accompanying drawings Figure 5 It can be observed that the outer edge of the third sound-absorbing mesh 43 is provided with a plurality of protrusions 431. In addition, the end of the shell is correspondingly provided with a plurality of recesses (not shown in the figure), and each protrusion is respectively clamped into one of the recesses. This arrangement facilitates the installation of the third sound-absorbing mesh.

[0029] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical solutions and the utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the utility model.

Claims

1. An air intake noise reduction hair dryer, comprising a handle and a hair dryer body, the hair dryer body comprising a housing, and a motor and an impeller arranged in the housing, characterized in that: The air inlet end of the shell is provided with an end cover, and a plurality of air inlet holes are formed in the side surface of the end cover.

2. The hair dryer with reduced air inlet noise according to claim 1, characterized in that: The first annular sound attenuation net is provided with a second annular sound attenuation net.

3. The air intake noise reducing hair dryer of claim 2, wherein: The outlet end of the second annular sound attenuation net is provided with a third sound attenuation net.

4. The air intake noise reducing hair dryer of claim 3, wherein: The third sound attenuation net is a perforated plate sound attenuation net and is arranged at the air inlet end of the shell.

5. The air intake noise reducing blower of claim 3, wherein: The end cover, the first annular sound attenuation net and the second annular sound attenuation net are coaxially arranged.

6. The air intake noise reducing blower of claim 3, wherein: The air inlet end of the shell is provided with a support, and the support comprises a body and a plurality of support rods arranged on the body; the first annular sound attenuation net is sleeved on the outer side of each support rod, and the second annular sound attenuation net is located on the inner side of the support.

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