Double-layer composite micro-perforated acoustic panel

Abstract

The utility model discloses a double-layer composite micro-perforated acoustical board which comprises a board body, a plurality of micro-perforated holes penetrating front and back are formed in the front surface of the board body, a plurality of vertical connecting holes penetrating up and down are formed in the top of the board body, and a plurality of transverse connecting holes penetrating left and right are formed in the left side of the board body. According to the double-layer composite micro-perforated acoustic panel, the wave-shaped micro-perforated holes and the refraction grooves are formed, the wave-shaped micro-perforated holes can prolong the staying time of sound in the micro-perforated holes, the refraction grooves can absorb and reflect the sound, the sound absorption effect is further improved, the sound absorption cotton is arranged, double-layer sound absorption is conducted, and the sound absorption effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound-absorbing panels, in particular to a double-layer composite micro-perforated sound-absorbing panel. Background Art

[0002] Microperforated panels are created by reducing the perforation diameter of conventional perforated panels to less than 1mm. These panels inherently possess sufficient acoustic resistance and low mass acoustic impedance, creating broadband sound absorbers without the need for any additional porous materials. With the advancement of materials and perforation processing technology, and the resulting broadband, efficient, clean, and environmentally friendly sound absorption characteristics, microperforated panels are now widely used in wall and ceiling finishes across numerous locations.

[0003] A search revealed an existing patent (publication number: CN206097917U) that discloses a microperforated sound-absorbing panel. The panel comprises a panel with evenly spaced microperforations. The microperforations are arranged diagonally, forming a barrier on the back of the microperforations. A gap is left between the barrier and the microperforations, and the gap and the microperforations form a sound channel. This microperforated sound-absorbing panel offers the advantage of excellent sound absorption without the need for sound-absorbing paper.

[0004] Although it improves the sound absorption effect through refraction, it still has its shortcomings. It does not have a structure to disperse the sound, which will cause the sound intensity to be too high and the sound absorption and sound insulation effect to be reduced. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a double-layered micro-perforated sound-absorbing panel, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a double-layer composite micro-perforated sound-absorbing panel, comprising a panel body, wherein the front surface of the panel body is provided with a plurality of micro-perforations running through the panel body from front to back, the top of the panel body is provided with a plurality of vertical connection holes running through the panel body from top to bottom, and the left side of the panel body is provided with a plurality of horizontal connection holes running through the panel body from left to right.

[0007] Preferably, a fixing groove is provided on the rear surface of the plate body, and a sound absorbing layer is provided inside the fixing groove.

[0008] Preferably, the inner side wall of the micro-perforation, the inner side wall of the vertical connecting hole and the inner side wall of the horizontal connecting hole are all provided with a plurality of refractive grooves.

[0009] Preferably, the micro-perforations are of a wavy structure.

[0010] Preferably, the sound-absorbing layer is sound-absorbing cotton. Beneficial effects

[0011] The utility model provides a double-layer composite micro-perforated sound-absorbing panel. Compared with the existing technology, it has the following advantages:

[0012] 1. The double-layer composite micro-perforated sound-absorbing panel is provided with wavy micro-perforations and refraction grooves. The wavy micro-perforations can increase the residence time of sound inside the micro-perforations, and the refraction grooves can absorb and reflect sound, further improving the sound absorption effect. In addition, the panel is provided with sound-absorbing cotton for double-layer sound absorption, which greatly improves the sound absorption effect.

[0013] 2. The double-layer composite micro-perforated sound-absorbing panel is provided with transverse connecting holes and vertical connecting holes, which are respectively connected to the transverse connecting holes and vertical connecting holes of other panels. In this way, when the sound is refracted inside the micro-perforations, the sound will be refracted into the interior of the transverse connecting holes and vertical connecting holes, and then enter the interior of the transverse connecting holes and vertical connecting holes inside the other panels, thereby dispersing the sound and reducing the sound intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the utility model.

[0015] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at point A.

[0017] Figure 4 It is a schematic structural diagram of the side view of the plate body in the utility model.

[0018] In the figure: 1. Plate body; 2. Horizontal connecting hole; 3. Micro perforation; 4. Vertical connecting hole; 5. Sound-absorbing layer; 6. Refraction groove; 7. Fixing groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-4The utility model provides a technical solution: a double-layer composite micro-perforated sound-absorbing panel, including a panel body 1, a front surface of the panel body 1 is provided with a plurality of micro-perforated holes 3 running through it front to back, a top of the panel body 1 is provided with a plurality of vertical connecting holes 4 running through it up and down, and a left side of the panel body 1 is provided with a plurality of horizontal connecting holes 2 running through it left to right. When sound is refracted inside the micro-perforated holes 3, the sound will be refracted into the inside of the horizontal connecting holes 2 and the vertical connecting holes 4, thereby dispersing the sound and reducing the sound intensity.

[0021] Furthermore, a fixing groove 7 is provided on the rear surface of the plate body 1, and a sound-absorbing layer 5 is provided inside the fixing groove 7. The inner wall of the micro-perforation 3, the inner wall of the vertical connecting hole 4 and the inner wall of the horizontal connecting hole 2 are all provided with multiple refraction grooves 6. The micro-perforation 3 has a wavy structure, and the sound-absorbing layer 5 is sound-absorbing cotton. The wavy micro-perforation 3 can increase the residence time of sound inside the micro-perforation 3, and the refraction groove 6 can absorb and reflect the sound.

[0022] When working, the wavy micro-perforations 3 can increase the residence time of sound inside the micro-perforations 3, and the refraction grooves 6 can absorb and reflect the sound, further improving the sound absorption effect. In addition, sound-absorbing cotton is provided for double-layer sound absorption, which greatly improves the sound absorption effect. The horizontal connecting holes 2 and the vertical connecting holes 4 are respectively connected to the horizontal connecting holes 2 and the vertical connecting holes 4 of the other plate bodies 1. In this way, when the sound is refracted inside the micro-perforations 3, the sound will be refracted into the inside of the horizontal connecting holes 2 and the vertical connecting holes 4, and then enter the inside of the horizontal connecting holes 2 and the vertical connecting holes 4 inside the other plate bodies 1, so that the sound can be dispersed and the sound intensity can be weakened.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer composite micro-perforated sound-absorbing panel, comprising a panel body (1), characterized in that: The front surface of the plate body (1) is provided with a plurality of micro-perforations (3) extending forward and backward, the top of the plate body (1) is provided with a plurality of vertical connection holes (4) extending upward and downward, and the left side of the plate body (1) is provided with a plurality of horizontal connection holes (2) extending left and right.

2. The double-layer composite micro-perforated sound-absorbing panel according to claim 1, characterized in that: A fixing groove (7) is provided on the rear surface of the plate body (1), and a sound absorbing layer (5) is provided inside the fixing groove (7).

3. The double-layer composite micro-perforated sound-absorbing panel according to claim 2, characterized in that: The inner side wall of the micro-perforation (3), the inner side wall of the vertical connection hole (4), and the inner side wall of the horizontal connection hole (2) are all provided with a plurality of refractive grooves (6).

4. The double-layer composite micro-perforated sound-absorbing panel according to claim 3, characterized in that: The micro-perforations (3) are of a wavy structure.

5. The double-layer composite micro-perforated sound-absorbing panel according to claim 4, characterized in that: The sound-absorbing layer (5) is sound-absorbing cotton.

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