REPLACEABLE PERFORATED ACOUSTIC PANEL

Abstract

The invention is a low-frequency absorbing resonator panel for use on wall and ceiling surfaces of enclosed spaces, and it has the ability to provide absorption in different frequency ranges thanks to its replaceable perforated front section.

Description

1 TARIFF REPLACEABLE PERFORATED ACOUSTIC PANEL TECHNICAL FIELD The invention relates to achieving the required absorption in different frequency ranges. This Using the panel will allow for balanced sound adjustment in enclosed spaces. 5 STATE OF THE ART Sound-absorbing materials are used to reduce sound reflection in enclosed spaces. Sound-absorbing materials are 3 They work in different ways. Porous absorbers, vibrating plates, and resonator systems. Porous Sound absorbers absorb sound waves that enter their pores through friction. Medium and high It is effective at certain frequencies. Vibrating plates first absorb the incoming sound waves at their own vibration frequencies, at a frequency of 10°. conversion into kinetic energy and then into heat energy in proportion to its internal absorption capacity. They absorb sounds by transforming them. Resonator absorbers, on the other hand, absorb sounds by converting the resonance of the air inside them. It absorbs sound waves at certain frequencies. It is preferred for absorbing sounds in the lower frequency range. is being done. Resonator absorbers, front-facing perforated Helmholtz resonator panels, low frequency and, if necessary, mid-frequency 15 It is used to provide absorption at certain frequencies. Previously used with Helmholtz resonator panels. Many studies have been conducted on this subject. Patent number US 3180448A, dated 1962, concerns the holes behind the holes. The higher frequency harmonics of Helmholtz resonator panels will change with varying volume. This is emphasized (Gary et al., 1962). Therefore, the plates are arranged in a way that creates different volumes. Lamination was demonstrated. This patent expired in 1982. 20 Patent number US2840179A, published in 1958, features perforated, separated hexagonal volumes and a front side. It relates to the panel design consisting of indentations. Sound-absorbing fibrous material is placed in the holes. By placing them in indentations, low-frequency sound absorption is achieved through the Helmholtz resonator effect. It aimed to achieve sound scattering in the mid and upper frequencies. Patented in 1975. The patent has expired. Patent US4228869A, dated 1980, for Helmholtz 25 with interchangeable volumes. This relates to resonator panels. In this design, different elements are used instead of air, namely liquid elements. It is stated that more sound absorption will occur in larger volumes. This is due to the lightness of air. It is thought that it does not create sufficient friction. 2 Patent No. KR20130068875A, dated 2018, describes the effectiveness of Helmholtz resonators in narrow bands. This is related to the use of sound-absorbing material in front of the hole. Sound is placed behind a thin film. By using absorbent fibrous material and placing a Helmholtz panel behind it, a wider band of effect is also achieved. It was created. Patent number US20230032437A1, dated 2023, describes a broadband noise absorber designed for 5 devices. It relates to a perforated Helmholtz resonator (Yong et al., 2022). It consists of tube cavities of varying depths. This resulting design aims to create a Helmholtz resonator that will be effective over a wider bandwidth. that was the aim. Concrete layered patent registered with the Turkish Patent Institute under number 2017 17676 in 2020. The acoustic panel has received utility model registration (Yüksel, 2017). This panel, which has a concrete and perforated front surface, has 10 Its intended use is to be impact resistant. The product we will create will be perforated. There is no similarity other than that. Adjustable acoustic panel, patent application number 2015 07273, filed with the Turkish Patent Institute. It was requested to obtain registration. This panel's effect frequency is achieved by opening and closing the holes on the front surface. It is based on the idea of ​​changing the field. Although it has a similar idea to our product, 15 Its complex mechanism and intended use differentiate the product. Between 20-2000 Hz Low absorption values, sound-diffusing surface without using panel depth, holes, It has an arrangement of sound-absorbing materials. Utility model number 2014 09499. The registered acoustic panel header uses Kraft honeycomb paper to create chambers within the panel. It consists of forming a mold and placing a perforated plate on top of it. 20 A Google Patent search using the keyword "Helmholtz resonator panel" yielded 14,783 results. These are mostly mufflers used in the industrial field. It is related to materials. Noise in vehicles, airplanes, machines, and ventilation systems, for example. It is seen to be used as a mitigating factor. The simplicity, functionality, and of the model we will create Its area of ​​application distinguishes it from other products. Helmholtz perforated panel 25 It appears that many patents existed from the early 1900s onwards. The duration of most of these patents... It's full. 3 THE PURPOSE OF THE INVENTION Professional sound design for sound recording studios, music rehearsal rooms, concert halls, etc. The venues require an environment where all frequency bands can be balanced. EBU Reverberation time is shown in standards such as Tech 3276, ITU R BS 1116, and BS ISO 23591. The values ​​need to be balanced in the low, medium, and high frequency regions. Medium and high 5 Frequencies are absorbed by many materials such as air, carpets, curtains, fabrics, fibrous materials, and sponges. This can be achieved with a specially designed absorber for absorbing sounds in the low frequency range. Materials are needed. Absorbers made of fibrous materials are used in the low frequency region. For them to be able to absorb water, their thickness or the gap behind them must reach 1 meter. It is necessary. However, maintaining these distances is often not feasible due to the loss of space. 10 A closed, perforated front-facing device that will be effective in the 63 Hz, 125 Hz, and 250 Hz center octave frequency ranges. The use of box-shaped panels is considered functionally suitable. Their depth is effective. Depending on the frequency, it ends at a maximum of 20 cm. The frequency at which the panel will be effective. Factors affecting the band include hole diameters and number, thickness and depth of the pre-perforated panel, and the panel itself. These can be listed as sponges to be used inside. 15 The most important feature of the panel in question is that the perforated front section can be removed and reattached. This This ensures the necessary sound balance is achieved without the need to remove and reattach the panels. will not remain. The balance desired to be created in the lower frequency region is delicate due to chamber resonances. It requires adjustment. This panel is used in venues where sound design is important. This will make it easier to achieve frequency balance. 20 BRIEF DESCRIPTIONS OF THE FIGURES To better understand the interchangeable perforated acoustic panel realized with this invention... The prepared figures include descriptions. Figure 1. Components of the panel. Figure 2. Placement of acoustic foam inside the panel 25 Figure 3. Pressing the magnets into the pre-perforated panel. Figure 4. View of all panel components assembled. 4 Figure 5. Interlocking grooves Figure 6. Front panel fitted into the recesses. REFERENCE NUMBERS 1. Wooden box 2. Wooden leg 5 3. Ferromagnetic materials (iron, nickel, cobalt) 4. Interchangeable perforated front panels 5. Fibrous materials (sponge, felt, etc.) 6. Magnet 7. Replaceable perforated acoustic panel 10 8. Interlocking grooves DETAILED DESCRIPTION OF THE INVENTION The defining characteristic of the perforated panel, which is the subject of this invention, is that its front face is interchangeable. The case is shown in Figure 1. The design of part 5 is shown. Part 1, which consists of the back surface and side surfaces. It shows the covered wooden frame section. The function of the wooden legs shown with number 2 is 15 Acoustic fiber material or sponge (5) to be applied to the back of the perforated front face plate (4) through the holes The goal is to ensure it stays firmly in place without slipping. The part indicated by number 3 is thin. It is a strip of iron, nickel, or cobalt metal laminated onto wood in film form. This part The task is to place a strong 2 cm diameter plate in front of the perforated wooden plate (4) which will be brought to the front. The purpose is to hold the magnets (6). The part shown with number 4 is the front 20 which has different hole diameters and numbers. These are perforated panels. Part number 5 is the sponge or which will be placed immediately behind the front perforated panel (4). It shows the felt. The part shown with number 6 is mounted by pressing it onto the front perforated panel (4). These are the magnets that will be used. As shown in Figure 2, the acoustics are placed on the wooden legs (2) inside the wooden case (1). A sponge (5) will be placed inside the front perforated panel (4), which can be of different thicknesses. ferromagnetic magnets (6) located on the feet (2) inside the wooden case (1) The box will be closed in such a way that it will be placed on the substance (3). With the holding force of the magnets (6) The perforated panel (4) will be attached to the wooden case (1). Alternatively, the front perforated panel (4) can be attached to the wooden case (1) by interlocking grooves (8) This can be done by using the pre-drilled panel (8) by attaching it to the slots (8) shown in Figure 5. It can be made interchangeable. The front perforated panel (4) can be fitted into the wooden case (1). The connected state with the grooves (8) is shown in Figure 6. INDUSTRIAL APPLICATION METHODS OF THE INVENTION 5 In spaces such as sound recording studios, listening rooms, and music rehearsal rooms, the balance of low frequencies is crucial. Acoustic panels are needed to ensure this. These products must be specially manufactured. These are the products. Achieving low-frequency balance requires fine tuning. Therefore, the panels... They must be easily replaceable. The locations where the panels will be mounted are in the room. Because there will be points where the resonances create high pressure, the panels will have high absorption capacity. Adjusting the frequency bands in which it will be used is becoming increasingly important. This panel, which is the subject of this invention, It is designed to meet needs. It has the potential to meet a significant need. there are.

Claims

6 REQUESTS 1. The invention is a replaceable perforated resonator panel; its characteristic is: − Wooden legs (2) inside a wooden case (1) − Ferromagnetic material (3) located at the ends of the wooden legs (2) − Fibrous material on the wooden legs (2) to widen the sound absorption frequency band 5 (5) - Held by magnets (6) placed on the wooden legs (2) or in the slots (8) front perforated panel (4) is included 2. The invention is a replaceable perforated acoustic panel in accordance with claim 1, and its feature is wood 10 It includes a front perforated panel (4) which is attached to the case (1) by a magnet (6).

3. The invention is a replaceable perforated acoustic panel, in accordance with claim 1, and its feature is that it is made of wood. It includes a front perforated panel (4) which fits into the slots (8) in the casing (1).

4. The invention is a replaceable perforated acoustic panel in accordance with claim 1, characterized by having pre-perforated sections. The panel (4) contains fibrous material (5) used behind it. 15 5. The invention is a replaceable perforated acoustic panel in accordance with claim 1, and its feature is... It includes a front perforated panel (4) that is replaceable and can be easily attached and removed.

Images