Modular assembly type broadband sound insulation box based on Helmholtz resonant cavity coupling siphonic effect

Abstract

The modular assembly type broadband sound insulation box based on the Helmholtz resonant cavity coupling siphonic effect comprises a frame and composite sound insulation units installed on the frame, and a sound insulation space is formed by the multiple composite sound insulation units; the composite sound insulation unit sequentially comprises an extension pipe sound insulation plate, a rubber pad and a cavity sound insulation plate from the side close to the frame to the outside, the extension pipe sound insulation plate comprises a base plate and a sound insulation extension pipe set arranged on the base plate, and the sound insulation extension pipe set comprises extension pipes arranged on the base plate in an array mode; the cavity sound insulation plate is provided with a cavity used for containing a single extension pipe, and the rubber pad is used for filling a contact gap between the base plate and the cavity. The modular assembly type broadband sound insulation box provided by the invention is simple in structural arrangement and light in weight, and has a good isolation effect on broadband noise.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of noise reduction equipment, and particularly relates to a modular assembly type wideband sound insulation box based on Helmholtz resonator coupling siphon effect. BACKGROUND

[0002] Many industrial electromechanical equipment manufacturers have higher requirements for the noise of products leaving the factory and the consistency of products. The noise declaration of industrial electromechanical equipment is obvious, but has the characteristics of individualization. Ordinary integrated sound insulation boxes are difficult to meet the size requirements of different devices, and it is necessary to manufacture a sound insulation box that can be assembled to adapt to the sound insulation requirements of different electromechanical equipment.

[0003] In the prior art, the traditional sound insulation box generally adopts the form of high-density integrated metal plate combined with sound-absorbing material to realize the sound insulation function. This leads to the difficulty in mass production and transfer of the sound insulation box when facing individualized requirements, and cannot meet the sound insulation and noise reduction use requirements of various different forms of instruments.

[0004] Patent document CN221861268U discloses a multi-layer structure metamaterial sound insulation box, which comprises a frame and a multi-layer structure. The frame comprises a main body frame and a door body frame. The multi-layer structure can jointly form a sound insulation box body with the main body frame, and can jointly form a door body with the door body frame. The sound insulation box body and the door body are hingedly connected. Each multi-layer material comprises, arranged from top to bottom, a sound-absorbing metamaterial layer, a damping film, a glass sound insulation plate, sound-absorbing cotton and a sound-absorbing metamaterial layer. The sound-absorbing metamaterial layer is located on the outer side of the multi-layer structure metamaterial sound insulation box, and the sound-absorbing metamaterial layer is located on the inner side of the multi-layer structure metamaterial sound insulation box. The sound insulation effect of noise can be improved, and the sound insulation effect of low-frequency noise is better. The structure is reasonably arranged, high-density metal plates are not needed, and the weight and size of the multi-layer structure metamaterial sound insulation box are effectively reduced.

[0005] Patent document CN118764813A discloses a sound insulation box, which comprises a box body. A baffle is installed in the box body. The baffle divides the space in the box body into a first sound insulation cavity and a second sound insulation cavity. An opening is formed in the baffle to communicate the first sound insulation cavity and the second sound insulation cavity. A first microphone corresponding to the opening is arranged in the first sound insulation cavity, and a second microphone corresponding to the opening is arranged in the second sound insulation cavity. One side of the box body is provided with a feeding and discharging port and a door body movement mechanism for sealing the feeding and discharging port. A carrier plate feeding and discharging mechanism is arranged on the baffle. The carrier plate feeding and discharging mechanism comprises a product carrier plate matched with the opening. When in a feeding and discharging state, the product carrier plate passes through the feeding and discharging port and is located outside the box body. When in a testing state, the product carrier plate is located at the opening position. SUMMARY

[0006] The modular assembly type wide-frequency sound insulation box based on Helmholtz resonant cavity coupling siphon effect has simple structure arrangement, light weight and good insulation effect on wide-frequency noise.

[0007] In order to achieve the object of the present application, the following technical scheme is provided: a modular assembly type wide-frequency sound insulation box based on Helmholtz resonant cavity coupling siphon effect, comprising a frame and a composite sound insulation unit mounted on the frame, and a sound insulation space formed by a plurality of composite sound insulation units; The composite sound insulation unit comprises, from the side close to the frame outward, an extension pipe sound insulation plate, a rubber pad and a cavity sound insulation plate, the extension pipe sound insulation plate comprises a base plate and a sound insulation extension pipe group arranged on the base plate, the sound insulation extension pipe group comprises extension pipes arranged in an array on the base plate, the cavity sound insulation plate is provided with cavities for accommodating individual extension pipes, and the rubber pad is used to fill the contact gap between the base plate and the cavities.

[0008] Specifically, the cavity sound insulation plate comprises a shell with one side open, a plurality of cavities are divided in the shell by a plurality of partitions, and the edge of the open side of the shell is provided with mounting holes for bolts to pass through and be connected with the frame.

[0009] Specifically, the mounting holes are a plurality of mounting holes, and the plurality of mounting holes are arranged around the edge of the open side of the shell.

[0010] Specifically, the thickness ratio of the extension pipe sound insulation plate, the rubber pad and the cavity sound insulation plate in the composite sound insulation unit is 4:1:20.

[0011] Specifically, the inner contour of the frame is provided with mounting protrusions for assembling the composite sound insulation unit.

[0012] Specifically, the sound insulation extension pipe group is composed of n rows in the transverse direction and n columns in the longitudinal direction of extension pipes with different hole diameters, and the range of n is 4-6.

[0013] Specifically, the hole diameter of the extension pipe changes based on the position sequence, and the change rule is as follows: The extension pipe at a certain angle of the sound insulation extension pipe group is set as the minimum hole, and the initial hole diameter is given; The extension pipe at the center of the sound insulation extension pipe group is set as the maximum hole, and the maximum hole diameter is given; The extension pipe with the initial hole diameter of the sound insulation extension pipe group is taken as the starting point, the hole diameter of the extension pipe is increased from the outermost circle to the inner circle, and the hole diameter of the extension pipe is no longer increased after reaching the maximum hole diameter of the extension pipe.

[0014] Specifically, the cavity sound insulation plate is further provided with sound insulation material attached to the outer side surface, and the sound insulation material comprises one or more of a sandwich board type, a galvanized iron sheet plus sound insulation felt or rubber damping.

[0015] Specifically, a plurality of composite sound insulation units are arranged on the same side of the frame, and the plurality of composite sound insulation units are laid side by side on the surface of the sound insulation material to form a sound insulation side plate.

[0016] Compared with the prior art, the beneficial effects of the present application are: By combining sound insulation cavities of different sizes, a wide frequency band of sound can be absorbed to achieve superior sound insulation effect; The assembled structure is adopted, and in order to further improve the sound insulation effect of the assembled sound insulation box, a sealing ring and a threaded connection are used to improve the sealing performance of the sound insulation box. Without setting high-density metal plates and without casting an integral sound insulation box body, the weight, volume and manufacturing cost of the sound insulation box are effectively reduced, and the assembly work can be conveniently carried out according to different sizes of sound insulation tasks. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A schematic view of the modular assembled wide-frequency sound insulation box based on Helmholtz resonant cavity coupling siphon effect is provided for the present embodiment; Figure 2 A structure explosion view of the modular assembled wide-frequency sound insulation box based on Helmholtz resonant cavity coupling siphon effect is provided for the present embodiment; Figure 3 A structure explosion view of the composite sound insulation unit is provided for the present embodiment; Figure 4 A side view of the composite sound insulation unit is provided for the present embodiment; Figure 5 A schematic view of the extension pipe sound insulation plate is provided for the present embodiment; Figure 6 A sectional view of the air conditioner compressor heat pump is provided for the present embodiment; In the figure, 100 is an assembled sound insulation box; 20 is a composite sound insulation unit; 201 is a first extension pipe; 202 is a second extension pipe; 203 is a third extension pipe; 204 is a fourth extension pipe; 205 is a fifth extension pipe; 206 is a sixth extension pipe; 207 is a seventh extension pipe; 208 is an eighth extension pipe; 209 is a ninth extension pipe; 210 is a tenth extension pipe; 211 is an eleventh extension pipe; 212 is a twelfth extension pipe; 213 is a thirteenth extension pipe; 214 is a fourteenth extension pipe; 215 is a fifteenth extension pipe; 216 is a sixteenth extension pipe; 222 is a mounting protrusion; 24 is an extension pipe sound insulation plate; 25 is a rubber pad; 26 is a cavity sound insulation plate; and 27 is a mounting hole. DETAILED DESCRIPTION

[0018] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0019] Many industrial electromechanical equipment manufacturers have higher requirements for the noise of the products and the consistency of the products. The noise of industrial electromechanical equipment is obvious, but has the characteristics of individualization. The ordinary integrated sound insulation box is difficult to meet the size requirements of different devices, and it is necessary to manufacture an assembled sound insulation box which can be assembled to adapt to the sound insulation requirements of different electromechanical equipment.

[0020] As shown in Figure 1 and Figure 2 , a modular assembled wideband sound insulation box 100 based on Helmholtz resonant cavity coupling siphon effect is provided for the present embodiment, and the assembled sound insulation box 100 comprises a frame 31 and a composite sound insulation unit 20 assembled on the frame 31.

[0021] As shown in Figure 3 and Figure 4 , a schematic diagram of the composite sound insulation unit 20 provided for the present embodiment is shown, which comprises an extension pipe sound insulation plate 24, a rubber pad 25 and a cavity sound insulation plate 26 from the side close to the frame outward in turn. The extension pipe sound insulation plate 24 comprises a base plate and a sound insulation extension pipe group arranged on the base plate, and the sound insulation extension pipe group comprises extension pipes arranged in an array on the base plate. The cavity sound insulation plate 26 is provided with cavities for accommodating individual extension pipes, and the rubber pad 25 is used to fill the contact gap between the base plate and the cavities.

[0022] More specifically, the cavity sound insulation plate 26 comprises a shell with one side open, and a plurality of cavities are divided in the shell by a plurality of partitions. The edge of the open side of the shell is provided with mounting holes 27 for bolts to pass through and connect with the frame. There are a plurality of mounting holes 27 arranged around the edge of the open side of the shell.

[0023] And the inner contour of the opposite frame 31 is provided with mounting protrusions 222 for assembling the composite sound insulation unit 20. The mounting holes 27 and the mounting protrusions 222 are fixed by bolts in turn. In this way, the sound insulation effect of the sound insulation box can be significantly improved while effectively ensuring the sealing performance of the sound insulation box, and the assembly is convenient and the sound insulation effect is significant.

[0024] In the present embodiment, the thickness ratio of the extension pipe sound insulation plate 24, the rubber pad 25 and the cavity sound insulation plate 26 is 4:1:20.

[0025] The sound insulation extension pipe group in any one sound insulation extension pipe group on the extension pipe sound insulation plate 24 is composed of n rows of transverse and n columns of longitudinal extension pipes with different hole diameters, and the range of n is 4-6.

[0026] The hole diameter of the extension pipe varies based on the position sequence, and the variation rule is as follows: The extension pipe at a certain angle of the sound insulation extension pipe group is set as the minimum hole, and the initial hole diameter is given; The extension pipe at the center of the sound insulation extension pipe group is set as the maximum hole, and the maximum hole diameter is given; The hole diameter of the extension pipe is increased from the outermost circle to the inner circle with the extension pipe at the initial hole diameter as the starting point, and the hole diameter of the extension pipe is no longer increased after reaching the maximum hole diameter.

[0027] In order to better illustrate the variation rule, the extension pipe sound insulation board 24 shown in Figure 4 is briefly described.

[0028] The extension pipe sound insulation board 24 is actually composed of a plurality of cavities on the cavity sound insulation board 26 and the extension pipes at the corresponding positions on the extension pipe sound insulation board 24 to form a sound insulation single package with an extension pipe in each cavity, and the hole diameters of the extension pipes in each sound insulation single package are different.

[0029] For example, sixteen regular sound insulation cavities are combined to form an extension pipe sound insulation board as the main functional board of the sound insulation box: the first extension pipe 201 has a radius of 1.4 mm, the second extension pipe 202 has a radius of 1.6 mm, the third extension pipe 203 has a radius of 1.8 mm, the fourth extension pipe 204 has a radius of 2.0 mm, the fifth extension pipe 205 has a radius of 2.2 mm, the sixth extension pipe 206 has a radius of 2.4 mm, the seventh extension pipe 207 has a radius of 2.6 mm, the eighth extension pipe 208 has a radius of 2.8 mm, and the ninth extension pipe 209 and the tenth extension pipe 210, the eleventh extension pipe 211, the twelfth extension pipe 212, the thirteenth extension pipe 213, the fourteenth extension pipe 214, the fifteenth extension pipe 215, and the sixteenth extension pipe 216 all have a radius of 3.0 mm.

[0030] Due to the siphon phenomenon, the sound pressure within the critical sound absorption radius centered on the resonance cavity will be absorbed by the resonance cavity, and by combining different sizes of sound insulation extension pipes, a wide frequency band of sound can be absorbed to achieve the best sound insulation effect.

[0031] The embodiment also provides an air conditioner compressor heat pump, as shown in Figure 6 by erecting a frame around the air conditioner compressor heat pump and then installing a composite sound insulation unit along the frame, in order to achieve better sound insulation effect in actual application, a sound insulation material is wrapped outside the assembled sound insulation box to achieve good compressor low and medium frequency comprehensive noise isolation effect. For example, a sandwich type sound insulation material, galvanized iron sheet plus sound insulation felt or rubber damping composite material, is attached to the sound insulation box to achieve wide frequency sound insulation performance.

[0032] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to exhaust all the implementations. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A modular assembled broadband soundproofing box based on Helmholtz resonator coupled siphon effect, characterized in that, The sound insulation frame comprises a frame and a plurality of composite sound insulation units arranged on the frame, and the composite sound insulation units are arranged to form a sound insulation space. The composite sound insulation unit comprises, from the side close to the frame outward, an elongated tube sound insulation plate, a rubber pad and a cavity sound insulation plate.

2. The modular assembly type wideband soundproof box based on Helmholtz resonance cavity coupling siphon effect according to claim 1, characterized in that, The elongated tube sound insulation plate comprises a base plate and a sound insulation elongated tube group arranged on the base plate.

3. The modular assembly wideband sound isolation enclosure based on Helmholtz resonator coupled siphoning effect of claim 2, wherein, The cavity sound insulation plate comprises a shell with an open side, and a plurality of cavities are formed in the shell by a plurality of partitions.

4. The modular assembly based on Helmholtz resonator coupled siphon effect wideband soundproof box according to claim 1, characterized in that, The edge of the open side of the shell is provided with a plurality of mounting holes for bolts to pass through and connect with the frame.

5. The modular assembly based on Helmholtz resonator coupled siphon effect wideband soundproof box according to claim 1, characterized in that, The mounting holes are arranged around the edge of the open side of the shell.

6. The modular assembly based on Helmholtz resonator coupled siphon effect wideband soundproof box according to claim 1, characterized in that, The thickness ratio of the elongated tube sound insulation plate, the rubber pad and the cavity sound insulation plate in the composite sound insulation unit is 4:1:

20.

7. The modular assembly based on Helmholtz resonator coupled siphon effect wideband soundproof box according to claim 1, characterized in that, The inner contour of the frame is provided with a mounting protrusion for assembling the composite sound insulation unit. The sound insulation elongated tube group comprises n rows of transverse and n columns of longitudinal elongated tubes with different hole diameters, and n is in the range of 4-6. The hole diameter of the elongated tube changes based on the position sequence, and the change rule is as follows: The elongated tube at a certain angle of the sound insulation elongated tube group is set as the minimum hole, and the initial hole diameter is given; 8. The modular assembly based on Helmholtz resonator coupled siphon effect wideband soundproof box according to claim 1, characterized in that, The elongated tube at the center of the sound insulation elongated tube group is set as the maximum hole, and the maximum hole diameter is given; 9. The modular assembly based on Helmholtz resonator coupled siphon effect wideband soundproof box according to claim 8, characterized in that, The elongated tube with the initial hole diameter at the center of the sound insulation elongated tube group is taken as the starting point, and the hole diameter of the elongated tube is increased from the outermost circle to the inner circle until the maximum hole diameter of the elongated tube is reached, and the hole diameter of the elongated tube is no longer increased. The cavity sound insulation plate is further provided with sound insulation material adhered to the outer side surface, and the sound insulation material comprises one or more of sandwich board, galvanized iron sheet and sound insulation felt or rubber damping. A plurality of composite sound insulation units are arranged on the same side of the frame, and the plurality of composite sound insulation units are arranged side by side on the surface of the sound insulation material to form a sound insulation side plate.

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