CN220871114U - Muffler device for ventilation system - Google Patents
Muffler device for ventilation system Download PDFInfo
- Publication number
- CN220871114U CN220871114U CN202321306204.9U CN202321306204U CN220871114U CN 220871114 U CN220871114 U CN 220871114U CN 202321306204 U CN202321306204 U CN 202321306204U CN 220871114 U CN220871114 U CN 220871114U
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- China
- Prior art keywords
- pore plate
- plate unit
- ventilation system
- muffler device
- layer
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- 238000009423 ventilation Methods 0.000 title claims abstract description 16
- 239000011148 porous material Substances 0.000 claims abstract description 47
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a muffler device for a ventilation system, comprising: the box body shell is internally provided with a through mounting cavity; the outer pore plate unit is circumferentially fixed on the inner wall of the mounting cavity; the inner orifice plate unit is circumferentially fixed on the outer orifice plate unit; the sound-absorbing structure layer is arranged between the inner pore plate unit and the outer pore plate unit. The device is composed of double-layer micro-pore plates, and energy dissipation and amplitude reduction are carried out on air flow for multiple times, so that the sound absorption capacity is enhanced.
Description
Technical Field
The utility model relates to the technical field of clean room noise elimination, in particular to a noise elimination device for a ventilation system.
Background
Air showers are in a clean room, and noise level is difficult to reduce due to smooth and firm surface of decorative materials and noise attenuation reduction, and the clean room is used as a relatively airtight and pressed environment, so that noise control is ensured, and the air showers are very important for protecting workshop staff and production environment. How to provide a sound damping device for a ventilation system becomes a key of the study of the person skilled in the art.
Disclosure of utility model
To this end, the utility model provides a muffler device for a ventilation system in order to solve the technical problems in the background art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a muffler device for a ventilation system, comprising:
the box body shell is internally provided with a through mounting cavity;
The outer pore plate unit is circumferentially fixed on the inner wall of the mounting cavity;
the inner orifice plate unit is circumferentially fixed on the outer orifice plate unit;
The sound-absorbing structure layer is arranged between the inner pore plate unit and the outer pore plate unit.
In some embodiments, the outer plate unit comprises an outer plate and an outer support, the outer support is fixed on the box shell, the outer plate is fixed on the outer support, and the outer plate is provided with a plurality of holes with diameters smaller than 1 mm.
In some embodiments, the inner well plate unit comprises an inner well plate and an inner support, the inner support is fixed on the outer well plate, the inner well plate is fixed on the inner support, and a plurality of holes with diameters smaller than 1mm are formed in the inner well plate.
In some embodiments, the wells on the outer microplate are equally spaced.
In some embodiments, the wells on the inner microwell plate are equally spaced.
In some embodiments, the sound absorbing structure layer is sound absorbing cotton.
In some embodiments, the box housing is connected with flange connectors at two sides of the installation cavity respectively.
In some embodiments, the outer microplate and the inner microplate are each made of stainless steel plate.
In summary, the utility model has the following beneficial effects:
1. The air flow stability is better: there is no barrier in the muffler cavity and there is no significant change in the gas flow direction.
2. The sound absorbing capacity is strong: the device consists of double-layer micro-pore plates, and can perform multiple energy dissipation and vibration reduction on the air flow so as to enhance the sound absorption capability.
3. The vibration amplitude of the equipment is smaller: after the air flow passes through the friction of the micropores of the double layers, the kinetic energy is reduced, and the overall vibration amplitude of the product with less energy acting on the surface of the product is lower.
4. The passing air flow is not easy to be polluted: the equipment adopts the micropore plate to carry out noise elimination, and the stainless steel material has the characteristics of difficult oxidation and corrosion resistance, and can not pollute the passing air.
Drawings
Fig. 1 is a schematic structural view of a muffler device for a ventilation system.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the preferred embodiments of the present application will be described in more detail with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or indirectly connected through intermediaries, for example, or may be in communication with each other between two elements or in an interaction relationship between the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship of the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or display that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or display.
A muffler device for a ventilation system according to an embodiment of the present application will be described in detail with reference to fig. 1 to 2. It is noted that the following examples are only for explaining the present application and are not to be construed as limiting the present application.
Example 1:
As shown in fig. 1, a muffler device for a ventilation system, comprising: the sound absorption box comprises a box body shell, an outer pore plate unit, an inner pore plate unit and a sound absorption structure layer, wherein a through mounting cavity is arranged in the box body shell; the outer pore plate unit is circumferentially fixed on the inner wall of the mounting cavity; the outer pore plate unit comprises an outer pore plate and an outer support, the outer support is fixed on a box shell, the outer pore plate is fixed on the outer support, and a plurality of holes with diameters smaller than 1mm are formed in the outer pore plate.
The inner orifice plate unit is circumferentially fixed on the outer orifice plate unit; the inner pore plate unit comprises an inner layer pore plate and an inner support, the inner support is fixed on the outer layer pore plate, the inner layer pore plate is fixed on the inner support, and a plurality of holes with diameters smaller than 1mm are formed in the inner layer pore plate. The sound absorbing structure layer is arranged between the inner pore plate unit and the outer pore plate unit.
Referring to fig. 2, a box shell 1 is formed by pressing a galvanized steel plate and welding flat edges, two ends of the box shell 1 are provided with connecting flange connectors 2, an outer support 3 is welded on the box shell 1, and an outer layer micropore plate 4 is fixed on the outer support 3 by using a self-plugging rivet; the inner bracket 5 is connected with the outer layer micropore plate by using a self-plugging rivet; the inner micro-pore plate 6 is connected with the inner bracket 5 by using a self-plugging rivet; the inner micro-pore plate 6 is just flush with the flange connection port 2 after molding. Before the inner micro-pore plate 6 is installed, the sound absorbing cotton 7 is adhered between the inner micro-pore plate and the outer micro-pore plate. The sound absorbing device is assembled after the above operation is completed.
Structural design of double-layer micropores: the double-layer micro-pore plates are arranged, the air flows through multiple times of friction, and the energy loss is rapid. The hollow cavity is in the form that a silencing structure is not arranged in the cavity of the silencer, so that the influence on the flow speed and the flow direction of gas is small, and the flow loss is small. The outlet and the cross section area of the cavity are the same, so that the stability of the flow direction and the flow rate of the air flow is ensured.
The air flow passes through the flange opening and then passes through the microporous plate of the next layer after entering the cavity through the microporous plate under the action of pressure. The micro-porous plate has a small pore diameter to improve sound absorption performance because the energy loss of the sound wave during propagation depends on the frictional loss of air in the micro-pores. The friction loss depends on the acoustic resistance of the sound absorption structure, and the larger the acoustic resistance is, the larger the friction loss is, and the acoustic resistance is inversely proportional to the square of the aperture. Since the aperture of the microperforated panel has been reduced to less than 1 mm, its acoustic resistance has been greatly increased compared with that of a general perforated panel (several mm to tens of mm), thereby improving the sound absorbing performance.
In some embodiments, the wells on the outer microplate are equally spaced. The holes on the inner layer micro-pore plate are arranged at equal intervals. The silencing effect is better.
In some embodiments, the sound absorbing structure layer is sound absorbing cotton.
The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, but rather as enabling modifications, variations in the structure, shape and principles of the utility model, which are obvious to those skilled in the art, are intended to be included within the scope of the utility model.
Claims (6)
1. A muffler device for a ventilation system, characterized by: comprising the following steps:
the box body shell is internally provided with a through mounting cavity;
The outer pore plate unit is circumferentially fixed on the inner wall of the mounting cavity;
the inner orifice plate unit is circumferentially fixed on the outer orifice plate unit;
the sound-absorbing structure layer is arranged between the inner pore plate unit and the outer pore plate unit;
The outer pore plate unit comprises an outer pore plate and an outer bracket, the outer bracket is fixed on a box shell, the outer pore plate is fixed on the outer bracket, and a plurality of holes with diameters smaller than 1mm are formed in the outer pore plate;
The inner pore plate unit comprises an inner layer pore plate and an inner support, the inner support is fixed on the outer layer pore plate, the inner layer pore plate is fixed on the inner support, and a plurality of holes with diameters smaller than 1mm are formed in the inner layer pore plate.
2. A muffler device for a ventilation system according to claim 1, wherein: the holes on the outer layer micro-pore plate are arranged at equal intervals.
3. A muffler device for a ventilation system according to claim 1, wherein: the holes on the inner layer micro-pore plate are arranged at equal intervals.
4. A muffler device for a ventilation system according to claim 1, wherein: the sound-absorbing structure layer is made of sound-absorbing cotton.
5. A muffler device for a ventilation system according to claim 1, wherein: the box body shell is respectively connected with flange connectors at two sides of the installation cavity.
6. A muffler device for a ventilation system according to claim 1, wherein: the outer layer micro-pore plate and the inner layer micro-pore plate are both made of stainless steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321306204.9U CN220871114U (en) | 2023-05-26 | 2023-05-26 | Muffler device for ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321306204.9U CN220871114U (en) | 2023-05-26 | 2023-05-26 | Muffler device for ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220871114U true CN220871114U (en) | 2024-04-30 |
Family
ID=90818737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321306204.9U Active CN220871114U (en) | 2023-05-26 | 2023-05-26 | Muffler device for ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220871114U (en) |
-
2023
- 2023-05-26 CN CN202321306204.9U patent/CN220871114U/en active Active
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