Silencing structure and mute fan thereof

Abstract

The utility model belongs to the technical field of silent fans, and particularly discloses a silencing structure and a silent fan thereof, the silencing structure comprises at least two first silencers or supporting clamping plates, the two first silencers are communicated through the supporting clamping plates, a plurality of first silencer assemblies in the silencing structure can be combined through the supporting clamping plates, and the silencing effect is good. The silencing structure can form a plurality of noise reduction cavities, then the silencing structure is installed between the outlet end of the draught fan body and the air outlet of the mute draught fan to achieve direct noise reduction of air exhausted by the draught fan body, noise generated by the mute draught fan can be reduced, and when the air outlet of the mute draught fan needs to be prolonged subsequently, the noise reduction structure can be used for reducing noise of the air exhausted by the draught fan body. According to the silencing fan, the number of the first silencer assemblies in the silencing structure can be synchronously increased, the silencing structure is extended through mutual cooperation of the first silencer assemblies and the supporting clamping plates, and the problem that the silencing effect of the silencing fan is reduced due to the fact that the air outlet is prolonged can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of silent fans, in particular to a silencer structure and a silent fan thereof. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and deliver gas. It is a driven fluid machine. Air blowers are widely used in the light industry. When using high-power fans, they often make loud noises, causing noise pollution to the working environment. In order to improve the silent effect of the fan, existing fans are equipped with noise reduction structures during production to reduce the sound of the fan, such as Chinese patent CN208503078U, a silent fan, including a silent fan body, a protective shell is provided on the outside of the silent fan body, a lining is provided on one side of the protective shell, sound-absorbing cotton is provided on one side of the lining, a motor is provided on one side of the silent fan body, a rotating bearing is provided on one side of the motor, a fan is provided on the outside of the rotating bearing, and fan blades are provided on the outside of the fan. A base is provided at the bottom end of the silent fan body, and an upper shock-absorbing plate is provided at the top of the base.

[0003] The above structure mainly reduces the vibration of the motor by means of shock absorption, thereby achieving noise reduction of the fan as a whole. At that time, this structure was used to simply reduce the noise of the silent fan body, but the air outlet end of the fan blade of this structure is still a distance from the air outlet of the equipment, so the wind blown by the fan blade will touch the inner wall of the shell, thereby generating a lot of noise, and the structure is not provided with a silencer structure. When the air outlet needs to be extended, it is impossible to effectively reduce the noise generated when the wind is discharged from the air outlet, thereby reducing the overall practicality of the equipment. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a silencer structure and a silent fan thereof.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a silencer structure, which includes at least two first silencers or supporting card plates, and the two first silencers are connected through the supporting card plates, so that the two first silencers are connected through the supporting card plates to form two noise reduction cavities.

[0006] Further description of this solution: first clamping parts are provided on both sides of the supporting clamping plate, one end of the first muffler is clamped on the outer surface of the first clamping part, a second clamping part is provided at the lower part of the first clamping part, and a buffer groove is formed between the first clamping part and the second clamping part.

[0007] Specifically, the first silencer includes a positioning sleeve and a sound insulation cotton layer, one end of the positioning sleeve is clamped on the outer surface of the first clamping portion, a plurality of through holes are opened on the outer wall of the positioning sleeve, and the outer surface of the positioning sleeve is wrapped with a sound insulation cotton layer.

[0008] Further description of this solution, the sound-absorbing structure also includes a shell, and air holes are respectively provided at both ends of the shell, and the air holes are connected to the noise reduction cavity.

[0009] The beneficial effects of the utility model are: a silent fan, comprising the silencer structure described above, and also comprising a base, a fan body and a second silencer, wherein the fan body is arranged on the upper surface of the base, the silencer structure is arranged at the air inlet end of the fan body, the second silencer is arranged at the air outlet end of the fan body, and the air outlet end of the second silencer is connected to the silencer structure.

[0010] It should be noted that the structure of the second muffler is consistent with that of the first muffler.

[0011] Further description of this scheme, a driving member is also provided on the upper part of the base, and a transmission driving wheel group is provided on the side of the driving member close to the fan body, the output end of the driving member is transmission-connected to one end of the transmission driving wheel group, and the other end of the transmission driving wheel group is transmission-connected to the fan body.

[0012] Specifically, a support frame is provided on the upper surface of the base, a support frame is provided above the support frame, and the support frame is connected to the bottom surface of the sound-absorbing structure.

[0013] The beneficial effects of the utility model are:

[0014] 1. The first silencer assembly inside the silencer structure can realize multiple combinations through the supporting card plate, so that the silencer structure forms multiple noise reduction cavities. Subsequently, the silencer structure is installed between the outlet end of the fan body and the air outlet of the silent fan, so as to achieve direct noise reduction of the wind discharged from the fan body, thereby reducing the noise generated by the silent fan. When the air outlet of the silent fan needs to be extended later, the number of the first silencer assembly in the silencer structure can be increased synchronously, and the silencer structure can be extended by the mutual cooperation of the first silencer assembly and the supporting card plate, so as to avoid the problem of reduced silencing effect of the silent fan due to the extension of the air outlet.

[0015] 2. A silencer structure is provided at the air inlet end of the fan body of the silent fan to reduce the noise generated by the silent fan during the air suction operation. A second silencer is also provided at the air outlet end of the fan body, and the air outlet end of the second silencer is connected to the silencer structure. The noise generated by the fan body during the air outlet operation can be reduced through the mutual cooperation of the second silencer and the silencer structure. By reducing the noise generated by the silent fan during air outlet and air inlet, the silent effect of the silent fan can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the noise reduction structure of the utility model;

[0017] Figure 2 It is an overall cross-sectional view of the noise reduction structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the combined structure of the first muffler and the supporting card plate of the utility model;

[0019] Figure 4 This is a cross-sectional view of the combined structure of the first muffler and the supporting card plate of the utility model;

[0020] Figure 5 This is an exploded view of the combined structure of the first muffler and the supporting card plate of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the support card of the utility model;

[0022] Figure 7 The overall structure of the utility model silent fan is shown in FIG. Figure 1 ;

[0023] Figure 8 The overall structure of the utility model silent fan is shown in FIG. Figure 2 ;

[0024] Fig. 9 This is a gas flow diagram of the silent fan of the utility model;

[0025] Fig.10 The utility model is a schematic diagram of the combined structure of the silent fan and the chassis.

[0026] As shown in the figure: the first silencer 1, the positioning sleeve 11, the through hole 111, the sound insulation cotton layer 12, the supporting card plate 2, the first clamping part 21, the second clamping part 22, the buffer groove 23, the noise reduction cavity 3, the outer shell 4, the air hole 41, the base 5, the fan body 6, the second silencer 7, the driving part 8, the driving wheel group 9, the supporting frame 10, the supporting bracket 101, and the chassis 100. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] As attached Figure 1 , 2 As shown in Figures 3, 4, 5 and 6, the utility model provides a silencer structure, which includes at least two first silencers 1 or supporting card plates 2. The two first silencers 1 are connected via the supporting card plates 2, so that the two first silencers 1 form two noise reduction cavities 3 through the connection of the supporting card plates 2. At the same time, the silencer structure also includes a shell 4, and air holes 41 are respectively provided at both ends of the shell 4. The air holes 41 are connected to the noise reduction cavity 3. By providing the air holes 41, external gas can enter the noise reduction cavity 3 through the air holes 41, so that the first silencers 1 can be used to reduce the noise of the flowing wind.

[0029] It should be noted that the air hole 41 can be used as an air inlet or an air outlet of the noise reduction structure.

[0030] Preferably, when the length of the silencer structure needs to be adjusted, the first silencer 1 and the supporting card plate 2 can be mutually clamped to realize a combination of multiple first silencers 1, so that the silencer structure can form multiple noise reduction cavities 3, so that the silencer structure can be installed in silent fans of different styles.

[0031] A first clamping portion 21 is provided on both sides of the subsequent supporting clamping plate 2, and one end of the first silencer 1 is clamped on the outer surface of the first clamping portion 21, so that the first silencer 1 can be installed and disassembled by clamping. When multiple first silencers 1 need to be installed, the clamping method can quickly realize the rapid assembly of the silencer structure. A second clamping portion 22 is provided at the lower part of the first clamping portion 21, and a buffer groove 23 is formed between the first clamping portion 21 and the second clamping portion 22. By providing the buffer groove 23, when the gas enters the silencer structure, the gas can be decelerated through the buffer groove 23, and the gas can better stay inside the first silencer 1, so that the gas entering the silencer structure can be further reduced in noise.

[0032] The first silencer 1 comprises a positioning sleeve 11 and a sound insulation cotton layer 12. One end of the positioning sleeve 11 is clamped on the outer surface of the first clamping portion 21. The outer wall of the positioning sleeve 11 is provided with a plurality of through holes 111. The outer surface of the positioning sleeve 11 is wrapped with the sound insulation cotton layer 12.

[0033] Moreover, the hollow shape can facilitate the gas to pass through the first silencer 1. When the gas passes through the first silencer 1, the gas can enter the sound insulation cotton layer 12 through the hole 111. The sound insulation cotton layer 12 can reduce the noise generated by the gas, thereby achieving the sound insulation effect by utilizing the sound insulation cotton layer 12.

[0034] It should be noted that the sound insulation cotton layer 12 is mainly composed of conventional sound-absorbing cotton on the market, and the sound-absorbing cotton can eliminate the noise generated by the flow of gas, which is a conventional technical means in this field and will not be described in detail here.

[0035] As attached Figure 4 , 7 As shown in Figures , 8, 9 and 10, the utility model also provides a silent fan, which uses the above-described silencer structure and includes a base 5, a fan body 6 and a second silencer 7. The fan body 6 is arranged on the upper surface of the base 5, the silencer structure is arranged at the air inlet end of the fan body 6, the second silencer 7 is arranged at the air outlet end of the fan body 6, and the air outlet end of the second silencer 7 is connected to the silencer structure.

[0036] It should be noted that the structure of the second muffler 7 is consistent with that of the first muffler 1 .

[0037] A silencer structure is provided at the air inlet end of the fan body 6 of the silent fan to reduce the noise generated by the silent fan during the air suction operation. A second silencer is also provided at the air outlet end of the fan body 6, and a silencer structure is connected to the air outlet end of the second silencer 7. The noise generated by the fan body 6 during the air outlet operation can be reduced through the cooperation between the second silencer 7 and the silencer structure. By reducing the noise generated by the silent fan during air outlet and air inlet, the silent effect of the silent fan can be further improved.

[0038] When the air outlet of the silent fan needs to be extended later, the number of the first silencer 1 components in the silencer structure can be increased simultaneously, and the silencer structure can be extended by the mutual cooperation of the first silencer 1 component and the supporting card plate 2, thereby avoiding the problem of reduced silencing effect of the silent fan due to the extension of the air outlet.

[0039] A driving member 8 is also provided on the upper part of the base 5. A transmission driving wheel set 9 is provided on one side of the driving member 8 close to the fan body 6. The output end of the driving member 8 is transmission-connected to one end of the transmission driving wheel set 9, and the other end of the transmission driving wheel set 9 is transmission-connected to the fan body 6.

[0040] When the fan body 6 needs to be started, the driving member 8 can be started first, and the driving member 8 can drive the transmission driving wheel set 9 to work. When the transmission driving wheel set 9 works, the fan body 6 can be driven to work synchronously.

[0041] It should be noted that the blower body 6 is a conventional Roots blower on the market, and the driving component 8 is a conventional servo motor on the market.

[0042] Preferably, a support frame 10 is provided on the upper surface of the base 5, and a support frame 101 is provided above the support frame 10. The support frame 101 is connected to the bottom surface of the silencer structure, thereby supporting the silencer structure and preventing the silencer structure from falling during operation.

[0043] Preferably, a chassis 100 is provided on the outside of the silent fan. By providing the chassis 100, the structure of the silent fan can be protected. An air inlet A and an air outlet B are provided on the upper surface of the chassis 100. The air inlet A is connected to the air inlet end of the silent fan, and the air outlet B is connected to the air outlet end of the silent fan.

[0044] When the silent fan needs to work: the driving member 8 can be started first, and the driving member 8 can drive the transmission driving wheel group 9 to work, and the transmission driving wheel group 9 can drive the fan body 6 to work, and the air inlet end of the fan body 6 is connected with the silencer structure, and the gas outside the working fan body 6 can enter the silencer structure through the air hole 41 of the shell 4 in the silencer structure at the air inlet end, and the subsequent gas is sent into the fan body 6 after the noise is reduced by the silencer structure, so that the air inlet of the silent fan can be realized. The operation is silent, and subsequently a second silencer 7 is provided at the air outlet end of the fan body 6, so that the second silencer 7 can perform noise reduction operation on the air outlet of the fan body 6. Subsequently, a silencer structure is also connected to the air outlet end of the second silencer 7, so that a secondary noise reduction operation can be performed on the gas discharged by the second silencer 7, so that the gas is discharged to the outside of the silent fan. By providing a two-stage silencer and noise reduction operation at the air outlet end of the fan body 6, the overall silent effect of the silent fan can be effectively improved.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A sound-absorbing structure, comprising at least two first sound-absorbing devices (1) or supporting plates (2), characterized in that: The two first silencers (1) are connected via a supporting card plate (2), so that the two first silencers (1) are connected via the supporting card plate (2) to form two noise reduction cavities (3).

2. A sound-absorbing structure according to claim 1, characterized in that: First clamping parts (21) are provided on both sides of the support clamping plate (2); one end of the first muffler (1) is clamped on the outer surface of the first clamping part (21); a second clamping part (22) is provided at the lower part of the first clamping part (21); and a buffer groove (23) is formed between the first clamping part (21) and the second clamping part (22).

3. A sound-absorbing structure according to claim 2, characterized in that: The first silencer (1) comprises a positioning sleeve (11) and a sound insulation cotton layer (12), one end of the positioning sleeve (11) is clamped to the outer surface of the first clamping portion (21), a plurality of through holes (111) are formed on the outer wall of the positioning sleeve (11), and the outer surface of the positioning sleeve (11) is wrapped with a sound insulation cotton layer (12).

4. A sound-absorbing structure according to claim 1, characterized in that: The noise reduction structure further comprises a shell (4), and air holes (41) are respectively provided at two ends of the shell (4), and the air holes (41) are connected to the noise reduction cavity (3).

5. A silent fan, using the silencer structure according to any one of claims 1 to 4, comprising a base (5), a fan body (6) and a second silencer (7), characterized in that: A fan body (6) is arranged on the upper surface of the base (5), a silencer structure is arranged at the air inlet end of the fan body (6), a second silencer (7) is arranged at the air outlet end of the fan body (6), and the air outlet end of the second silencer (7) is connected to the silencer structure.

6. A silent fan according to claim 5, characterized in that: A driving member (8) is also provided on the upper part of the base (5); a transmission driving wheel group (9) is provided on a side of the driving member (8) close to the fan body (6); an output end of the driving member (8) is transmission-connected to one end of the transmission driving wheel group (9); and the other end of the transmission driving wheel group (9) is transmission-connected to the fan body (6).

7. A silent fan according to claim 6, characterized in that: The upper surface of the base (5) is also provided with a support frame (10), and the upper portion of the support frame (10) is provided with a support frame (101), and the support frame (101) is connected to the bottom surface of the sound-absorbing structure.

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