Fan motor silencer

Abstract

The utility model relates to a fan motor silencer which comprises a cover body and a silencing structure arranged on the side wall of the cover body, and the silencing structure comprises an outer air inlet arranged on the outer wall of the cover body, an inner air inlet arranged on the inner wall of the cover body and a silencing channel communicating the outer air inlet with the inner air inlet. According to the bladeless fan, through the arrangement of the outer air inlet, the noise reduction channel and the inner air inlet, it can be ensured that air enters the bladeless fan to form airflow, noise generated by the fan motor is blocked and reflected through the noise reduction channel when the noise is spread outwards, the noise reduction and noise reduction effects are achieved, then the noise generated when the bladeless fan works is reduced, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan motor silencer. BACKGROUND

[0002] The existing bladeless fan is favored by the market because of its unique shape and advanced technology. The base of the existing bladeless fan includes a fan motor power system and a base shell. The fan motor power system inhales air entering from the base shell when running at high speed, and then sends the air into a nozzle assembly for blowing out.

[0003] In the actual working process of the bladeless fan, the fan motor power system inhales air through the air inlet and establishes airflow. However, the noise generated by the fan motor power system when working can be diffused outward through the air inlet, resulting in a relatively large noise of the bladeless fan, which affects the user's experience. SUMMARY

[0004] The utility model aims at at least in a certain extent solves one of the problems existing in prior art related, for this, the utility model provides a fan motor silencer.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A fan motor silencer, comprising a cover body and a silencing structure arranged on the side wall of the cover body, the silencing structure comprising an outer air inlet arranged on the outer wall of the cover body, an inner air inlet arranged on the inner wall of the cover body, and a silencing channel connecting the outer air inlet and the inner air inlet.

[0007] In some embodiments, the cover body is a barrel-shaped structure with an open upper end, which comprises a circular bottom plate, an outer annular side wall and an inner annular side wall arranged on the circular bottom plate, the outer air inlet is arranged on the outer annular side wall, the inner air inlet is arranged on the inner annular side wall, and the silencing channel is arranged between the outer annular side wall and the inner annular side wall.

[0008] In some embodiments, the outer air inlet and the inner air inlet are not on the same meridian line.

[0009] In some embodiments, a straight line segment between the center of the circular bottom plate and the outer air inlet is a first reference line, a straight line segment between the center of the circular bottom plate and the inner air inlet is a second reference line, and an angle A is formed between the first reference line and the second reference line.

[0010] In some embodiments, the angle A is 25-35°.

[0011] In some embodiments, the silencing channel is an arc-shaped structure or an S-shaped structure.

[0012] In some embodiments, the outer air inlet, the inner air inlet and the sound attenuation channel are arranged in multiple groups along a circumference.

[0013] In some embodiments, the outer air inlet and the inner air inlet are both long opening structures extending along a vertical direction.

[0014] In some embodiments, a connecting reinforcing sheet is arranged in the sound attenuation channel.

[0015] Compared with the prior art, the utility model has the advantages that: through the arrangement of the outer air inlet, the sound attenuation channel and the inner air inlet, it can ensure that air enters to form air flow, and at the same time, the noise generated by the fan motor is blocked and reflected by the sound attenuation channel when being transmitted outward, so that the noise during the operation of the bladeless fan is reduced, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic view of the sound attenuator of the utility model;

[0017] Figure 2 It is a front view schematic view of the sound attenuator of the utility model;

[0018] Figure 3 It is a three-dimensional schematic view of the sound attenuator of the utility model; Figure 2

[0019] Figure 4 It is a three-dimensional schematic view of the fan motor and the sound attenuator after installation of the utility model;

[0020] Figure 5 It is a sectional view schematic view of the fan motor and the sound attenuator after installation of the utility model. DETAILED DESCRIPTION

[0021] The following detailed implementation provides a plurality of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numbers may be used to indicate different embodiments in different embodiments. These repetitions are for the purpose of simply and clearly describing the utility model, and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0022] As Figures 1-5 ​The fan motor silencer shown comprises a cover body 1 installed at the air inlet of a fan motor assembly 10, and a sound reduction structure is arranged on the side wall of the cover body 1, which comprises an outer air inlet 2 arranged on the outer wall of the cover body 1, an inner air inlet 3 arranged on the inner wall of the cover body 1, and a sound reduction channel 4 connecting the outer air inlet 2 and the inner air inlet 3. Thus, the arrangement of the outer air inlet 2, the sound reduction channel 4 and the inner air inlet 3 can ensure that air enters the fan motor assembly 10 and forms an air flow. Meanwhile, the noise generated by the fan motor assembly 10 is blocked and reflected by the sound reduction channel 4 when it spreads outward, thereby reducing the noise during the operation of the bladeless fan and improving the user experience.

[0023] Referring to Figure 1 , Figure 2 As shown, the cover body 1 is in the form of a barrel structure with an open upper end, which comprises a circular bottom plate 21, an outer annular side wall 22 and an inner annular side wall 23 arranged on the circular bottom plate 21, and an annular cavity is formed between the outer annular side wall 22 and the inner annular side wall 23. The outer air inlet 2 is arranged on the outer annular side wall 22, the inner air inlet 3 is arranged on the inner annular side wall 23, and the sound reduction channel 4 is arranged between the outer annular side wall 22 and the inner annular side wall 23.

[0024] Referring to Figure 3 As shown, the outer air inlet 2 and the inner air inlet 3 are not on the same meridian line, so the sound reduction channel 4 is not directly and linearly connected.

[0025] Preferably, the sound reduction channel 4 is in the form of an arc structure or an S-shaped structure, so that the inner wall of the sound reduction channel 4 is relatively arc-shaped and smooth, which can facilitate the fan motor assembly 10 to quickly suck in the wind and enhance the air flow rate. Meanwhile, the noise generated by the fan motor assembly 10 can be reflected multiple times in the sound reduction channel 4 until it is eliminated, thereby achieving a good silent effect.

[0026] The sound reduction channel 4 in the form of an arc structure or an S-shaped structure is a preferred scheme, and of course, it can also be in any shape structure. As long as it achieves the technical effects of the present application by any same or similar means, it shall fall within the protection scope of the present application.

[0027] As Figure 3 shown, a straight line segment between the center of the circular bottom plate 21 and the outer air inlet 2 is a first reference line 41, a straight line segment between the center of the circular bottom plate 21 and the inner air inlet 3 is a second reference line 42, and an angle A is formed between the first reference line 41 and the second reference line 42. Thus, the outer air inlet 2 and the inner air inlet 3 have a certain distance, which can lengthen the length of the sound reduction channel 4 to obtain a better silent effect.

[0028] The angle A is 25-35°, preferably 30°.

[0029] Referring to Figures 1-3 As shown, according to the size and strength of the cover 1, the outer air inlet 2, the inner air inlet 3 and the sound attenuation channel 4 are arranged in multiple groups along the circumference, and the present application is designed with twenty groups.

[0030] Further, the outer air inlet 2 and the inner air inlet 3 are both long opening structures extending in the vertical direction, wherein the length and width of the outer air inlet 2 and the inner air inlet 3 are 80mm*7mm.

[0031] In order to strengthen the overall strength of the cover 1, a connecting reinforcing sheet 20 is arranged in the sound attenuation channel 4, and the connecting reinforcing sheet 20 is preferably arranged at the middle position of the sound attenuation channel 4. The sound attenuation channel 4 can be divided into two parts by the connecting reinforcing sheet 20, and the injection molding production of the injection mold can be facilitated.

[0032] Of course, the number and size of the above air inlets are the preferred scheme of the present application, as long as any same or similar means achieves the technical effect of the present application, it should fall within the protection scope of the present application.

[0033] The basic principle and main features of the present application and the advantages of the present application are described above in combination with the drawings. It should be understood by those skilled in the art that the present application is not limited by the above examples. The above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A fan motor silencer characterized by: The muffler (1) is provided with a sound-absorbing structure on the side wall, which comprises an outer air inlet (2) on the outer wall of the muffler (1), an inner air inlet (3) on the inner wall of the muffler (1), and a sound-absorbing channel (4) connecting the outer air inlet (2) and the inner air inlet (3).

2. A fan motor silencer as claimed in claim 1, wherein: The muffler (1) is in a barrel structure with an open upper end, which comprises a circular bottom plate (21), an outer annular side wall (22) and an inner annular side wall (23) arranged on the circular bottom plate (21), the outer air inlet (2) is arranged on the outer annular side wall (22), the inner air inlet (3) is arranged on the inner annular side wall (23), and the sound-absorbing channel (4) is arranged between the outer annular side wall (22) and the inner annular side wall (23).

3. A fan motor silencer according to claim 1 or 2, characterised in that: The outer air inlet (2) and the inner air inlet (3) are not on the same meridian.

4. A fan motor silencer as claimed in claim 2, wherein: The straight line segment between the center of the circular bottom plate (21) and the outer air inlet (2) is the first reference line (41), the straight line segment between the center of the circular bottom plate (21) and the inner air inlet (3) is the second reference line (42), and the first reference line (41) and the second reference line (42) form an angle A.

5. A fan motor silencer as claimed in claim 4, characterised in that: The angle A is 25-35°.

6. A fan motor silencer according to claim 1 or 2, characterised in that: The sound-absorbing channel (4) is in an arc structure or an S-shaped structure.

7. A fan motor silencer according to claim 1 or 2, characterised in that: The outer air inlet (2), the inner air inlet (3) and the sound-absorbing channel (4) are arranged in multiple groups along the circumference.

8. A fan motor silencer according to claim 1 or 2, characterised in that: The outer air inlet (2) and the inner air inlet (3) are both long opening structures extending in the vertical direction.

9. A fan motor silencer as claimed in claim 8, characterised in that: A connecting reinforcing sheet (20) is arranged in the sound-absorbing channel (4).

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