Straight-through silencer

Abstract

The utility model discloses a straight-through silencer, and relates to the technical field of ventilation equipment. The straight-through silencer comprises a shell, a silencer body and a silencing channel, the silencer body is installed in the shell, connectors are arranged at the two ends of the silencer body, the silencing channel is installed between the inner surface of the shell and the outer surface of the silencer body, the silencing channel is arranged in a bent mode, and a penetrating hole penetrates through the side wall of the silencer body. A plurality of layers of polyester sound-absorbing cotton are installed at the outer side end of the silencer body, a glass fiber layer is installed in the middle of the silencer body, and the thickness of the glass fiber layer is larger than that of the polyester sound-absorbing cotton. The polyester sound-absorbing cotton and the glass fiber layer in the silencer body are used for reducing noise, the multiple layers of polyester sound-absorbing cotton are arranged to be matched, and the noise reduction effect is guaranteed through the change of multiple cavity structures and the matching of corresponding sound-absorbing materials; and through cooperation of the silencing channel and the silencer body, the overall noise reduction effect of the silencer is further improved, and the overall structure is compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to ventilation equipment technical field more specifically is direct through muffler. BACKGROUND

[0002] Ventilation equipment installs muffler, and it is the key measure to solve noise pollution, needs according to specific noise characteristic, environmental requirement and system parameter selection use. Muffler has become the indispensable component of ventilation system. The traditional direct through muffler adopts cylinder structure, and simply superimposes sound absorption material in cylinder, although it can play certain noise reduction effect, but comprehensive noise reduction effect is limited. In order to further improve the noise reduction effect of muffler, then, there is the case. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a direct through muffler.

[0004] The utility model discloses a direct through muffler to realize the following technical scheme specifically:

[0005] A direct through muffler, including casing, muffler main part, sound absorbing channel, the muffler main part is installed in casing, and the both ends of muffler main part are provided with interface, installs sound absorbing channel between casing inner surface and muffler main part outer surface, and sound absorbing channel is bent and sets up, the side wall of muffler main part is penetrated with perforation, and sound absorbing channel is penetrated with muffler main part through perforation, a plurality of layers of polyester sound absorption cotton are installed to the outside end of muffler main part, glass fibre layer is installed in the middle part of muffler main part, and the thickness of glass fibre layer is greater than the thickness of polyester sound absorption cotton.

[0006] In some embodiments, the inner cavity of the muffler main part is divided into a plurality of cavities, which are a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity, and a sixth cavity.

[0007] In some embodiments, the cavity space of the first cavity gradually increases from left to right.

[0008] In some embodiments, three polyester sound absorption cottons are installed in the second cavity and the fifth cavity, and gaps are provided between adjacent polyester sound absorption cottons.

[0009] In some embodiments, the cavity space of the third cavity gradually decreases from left to right, and a glass fibre layer is installed in the third cavity.

[0010] In some embodiments, the cavity space of the fourth cavity gradually increases from left to right, and a glass fibre layer is installed in the fourth cavity.

[0011] In some embodiments, the cavity space of the sixth cavity gradually decreases from left to right.

[0012] In some embodiments, the perforations include a first perforation, a second perforation, and a third perforation, the first perforation and the second perforation penetrating the second cavity, the third perforation penetrating the third cavity, the input end of the sound-absorbing channel penetrating the first perforation and the second perforation, and the output end of the sound absorber penetrating the third perforation.

[0013] The utility model discloses the beneficial effect is as follows:

[0014] The utility model discloses polyester sound absorption cotton, glass fiber layer in the sound absorber main part carry out the noise reduction, and set up multilayer polyester sound absorption cotton cooperation, through multiple cavity structure changes, and cooperate corresponding sound absorption material, guarantee the noise reduction effect, through the sound-absorbing channel and sound absorber main part cooperation, further promote the noise reduction effect of sound absorber whole, compact overall structure, cooperation use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the structure schematic diagram of each cavity distribution;

[0017] Figure 3 It is Figure 2 The partial close -up of A place in the middle.

[0018] Fig. 1, shell; 2, sound absorber main part; 21, first cavity; 22, second cavity; 23, third cavity; 24, fourth cavity; 25, fifth cavity; 26, sixth cavity; 3, sound-absorbing channel; 4, interface; 5, polyester sound absorption cotton; 6, glass fiber layer; 7, first perforation; 8, second perforation; 9, third perforation. DETAILED DESCRIPTION

[0019] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the following will be combined with the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0021] As Figures 1-3 The utility model provides a straight -through muffler, including casing 1, muffler main part 2, sound -absorbing channel 3, muffler main part 2 installs in casing 1, and the both ends of muffler main part 2 are provided with interface 4, and the inside surface of casing 1 and the outside surface of muffler main part 2 between install sound -absorbing channel 3, and sound -absorbing channel 3 is bent and sets up, and the side wall of muffler main part 2 is penetrated with perforation, and sound -absorbing channel 3 is penetrated with muffler main part 2 through the perforation, and the outside end of muffler main part 2 installs several layers of polyester sound -absorbing cotton 5, and the middle part of muffler main part 2 installs glass fibre layer 6, and the thickness of glass fibre layer 6 is greater than the thickness of polyester sound -absorbing cotton 5.

[0022] According to some embodiments of the utility model, optionally, the inner cavity of muffler main part 2 is divided into multiple cavities, which are first cavity 21, second cavity 22, third cavity 23, fourth cavity 24, fifth cavity 25 and sixth cavity 26.

[0023] According to some embodiments of the utility model, optionally, the cavity space of first cavity 21 gradually increases from left to right.

[0024] According to some embodiments of the utility model, optionally, three polyester sound -absorbing cottons 5 are installed in second cavity 22 and fifth cavity 25, and gaps are arranged between adjacent polyester sound -absorbing cottons 5.

[0025] According to some embodiments of the utility model, optionally, the cavity space of third cavity 23 gradually decreases from left to right, and glass fibre layer 6 is installed in third cavity 23.

[0026] According to some embodiments of the utility model, optionally, the cavity space of fourth cavity 24 gradually increases from left to right, and glass fibre layer 6 is installed in fourth cavity 24.

[0027] According to some embodiments of the utility model, optionally, the cavity space of sixth cavity 26 gradually decreases from left to right.

[0028] According to some embodiments of the utility model, optionally, the perforation includes first perforation 7, second perforation 8 and third perforation 9, the first perforation 7 and the second perforation 8 are penetrated on the second cavity 22, the third perforation 9 is penetrated on the third cavity 23, the input end of sound -absorbing channel 3 is penetrated with first perforation 7 and second perforation 8 respectively, and the output end of muffler is penetrated with third perforation 9.

[0029] Embodiment 1

[0030] As Figures 1-3As shown, this embodiment provides a straight-through muffler, including a housing 1, a muffler body 2, and a muffler channel 3. The muffler body 2 is installed inside the housing 1, and interfaces 4 are provided at both ends of the muffler body 2. The muffler channel 3 is installed between the inner surface of the housing 1 and the outer surface of the muffler body 2, and the muffler channel 3 is bent. A perforation is provided through the side wall of the muffler body 2, and the muffler channel 3 communicates with the muffler body 2 through the perforation. Several layers of polyester sound-absorbing cotton 5 are installed on the outer end of the muffler body 2, and a glass fiber layer 6 is installed in the middle of the muffler body 2. The thickness of the glass fiber layer 6 is greater than the thickness of the polyester sound-absorbing cotton 5.

[0031] The muffler body 2 has an internal cavity divided into multiple chambers, namely a first chamber 21, a second chamber 22, a third chamber 23, a fourth chamber 24, a fifth chamber 25, and a sixth chamber 26. The first chamber 21 gradually increases in size from left to right. The second chamber 22 and the fifth chamber 25 are each equipped with three polyester sound-absorbing cottons 5, and there is a gap between adjacent polyester sound-absorbing cottons 5. The third chamber 23 gradually decreases in size from left to right, and a glass fiber layer 6 is installed inside the third chamber 23. The fourth chamber 24 gradually increases in size from left to right, and a glass fiber layer 6 is installed inside the fourth chamber 24. The sixth chamber 26 gradually decreases in size from left to right. The perforations include a first perforation 7, a second perforation 8, and a third perforation 9. The first perforation 7 and the second perforation 8 pass through the second cavity 22, and the third perforation 9 passes through the third cavity 23. The input end of the silencer channel 3 is connected to the first perforation 7 and the second perforation 8, respectively, and the output end of the silencer is connected to the third perforation 9.

[0032] by Figure 1 Taking the structure shown as an example, the interface 4 on the left is the input terminal. When the direct-flow muffler is installed and used, the sound enters the first cavity 21. Since the space of the first cavity 21 increases from left to right, the sound is relatively weakened by the polyester sound-absorbing cotton 5 on the second cavity 22, and then weakened by the glass fiber layer 6 on the third cavity 23. A silencer channel 3 is also provided on the side of the first cavity 21 to the third cavity 23. The sound enters the silencer channel through the corresponding perforation, is weakened by the bend, and finally weakened by the glass fiber layer 6 on the third cavity 23; then weakened by the glass fiber layer 6 on the fourth cavity 24 and the polyester sound-absorbing cotton 5 on the fifth cavity 25, and finally output from the interface 4 on the right side. The noise reduction effect is ensured by the combined noise reduction of multiple cavity structures and multiple silencer channels 3 within the muffler body 2.

Claims

1. A straight-through muffler, characterized by, The application relates to a muffler, which comprises a shell, a muffler body and a muffling channel, the muffler body is installed in the shell, interfaces are arranged at the two ends of the muffler body, the muffling channel is installed between the inner surface of the shell and the outer surface of the muffler body, the muffling channel is arranged in a bending mode, perforations are arranged through the side wall of the muffler body, the muffling channel is in communication with the muffler body through the perforations, a plurality of layers of polyester sound-absorbing cotton are installed at the outer end of the muffler body, and a glass fiber layer is installed in the middle of the muffler body, the thickness of the glass fiber layer is greater than that of the polyester sound-absorbing cotton.

2. The through muffler of claim 1, wherein The inner cavity of the muffler body is divided into a plurality of cavities, namely a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity and a sixth cavity.

3. The through muffler of claim 2, wherein The cavity space of the first cavity gradually increases from left to right.

4. The through muffler of claim 2, wherein Three polyester sound-absorbing cottons are installed in the second cavity and the fifth cavity, and gaps are arranged between the adjacent polyester sound-absorbing cottons.

5. The through muffler of claim 2, wherein The cavity space of the third cavity gradually decreases from left to right, and a glass fiber layer is installed in the third cavity.

6. The through muffler of claim 2, wherein The cavity space of the fourth cavity gradually increases from left to right, and a glass fiber layer is installed in the fourth cavity.

7. The through muffler of claim 2, wherein The cavity space of the sixth cavity gradually decreases from left to right.

8. The through muffler of claim 2, wherein The perforations comprise a first perforation, a second perforation and a third perforation, the first perforation and the second perforation are arranged through the second cavity, the third perforation is arranged through the third cavity, the input end of the muffling channel is in communication with the first perforation and the second perforation, and the output end of the muffler is in communication with the third perforation.

Images