CN211207176U - Reflection type gradient acoustic device capable of adjusting local reflected wave phase - Google Patents
Reflection type gradient acoustic device capable of adjusting local reflected wave phase Download PDFInfo
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- CN211207176U CN211207176U CN201921647422.2U CN201921647422U CN211207176U CN 211207176 U CN211207176 U CN 211207176U CN 201921647422 U CN201921647422 U CN 201921647422U CN 211207176 U CN211207176 U CN 211207176U
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Abstract
The utility model provides a reflection type gradient acoustic device capable of adjusting local reflected wave phase, which is used for adjusting the reflected phase of incident sound wave beam with fixed wavelength in the air; the acoustic device includes a plurality of constitutional units that arrange side by side, each constitutional unit includes the shell body and accepts the rotator in the shell body, the shell body is other five face confined rectangle boxes of one side opening, the rotator includes first riser, second riser, four outer diaphragms and a plurality of interior diaphragms, parallel arrangement about the first riser with the second riser aligns from top to bottom, outer diaphragm with interior diaphragm connect respectively in two riser inboards. The utility model has the advantages that: the acoustic device is internally provided with a rotatable rotating body, and the angle of the reflected sound beam can be adjusted by rotating the angle of the rotating body; and the acoustic device is composed of a plurality of same structural units, is convenient for large-scale mass production, is convenient to assemble and has wide practicability.
Description
Technical Field
The utility model relates to an acoustics device field especially relates to a reflection-type gradient acoustics device of adjustable local reflected wave phase place.
Background
The reflected wave phase adjusting device is an important acoustic device, is used for adjusting the phase of the reflected wave of an incident sound beam with a specific wavelength, so that the reflected sound wave has an abnormal oblique reflection effect, and the important application is to reflect the incident sound beam with a fixed wavelength out according to a certain angle; the existing commonly used reflected wave phase adjusting structures such as a Helmholtz-like resonance structure, a pure space folding structure, a membrane structure and the like all belong to passive acoustic super-surface, once the phase adjusting devices of the structures are manufactured, the performance of the phase adjusting devices is fixed, only incident sound waves can be reflected according to a fixed angle, the phase adjusting devices can be specially designed and used only according to certain specific conditions, the application range of the phase adjusting devices is very narrow, the practical value is very low, and therefore an acoustic device capable of adjusting the reflection angle of the incident sound waves is needed, the reflection angle of the reflected sound waves can be changed within a certain range, and the passive acoustic super-surface phase adjusting device is suitable for different application scenes.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a reflection type gradient acoustic device capable of adjusting a phase of a local reflected wave, for adjusting a reflected phase of an incident acoustic beam having a fixed wavelength in air; the acoustic device comprises a plurality of structural units, each structural unit comprises an outer shell and a rotating body, the outer shell comprises an upper plate, a lower plate, an end plate and two side plates, the upper plate and the lower plate are arranged in parallel, the two side plates are arranged in parallel left and right and are positioned between the upper plate and the lower plate, the ends are vertically connected to one ends of the two side plates, the upper plate, the lower plate, the end plate and the two side plates form a rectangular box with one opening and other five closed surfaces, one surface of the opening is an incident surface, the rotating body comprises a first vertical plate, a second vertical plate, four outer transverse plates and a plurality of inner transverse plates, the first vertical plate and the second vertical plate are arranged in parallel left and right and are aligned up and down, two of the four outer transverse plates are vertically connected to the inner side of the first vertical plate and are positioned at the two ends of the first vertical plate, and the other two outer transverse plates are, the sound wave inlet is reserved between the two outer transverse plates at the same end, all the inner transverse plates are divided into two groups, one end of one group of the inner transverse plates is vertically connected to the inner side of the first vertical plate, a sound wave gap is reserved between the other end of the one group of the inner transverse plates and the second vertical plate, one end of the other group of the inner transverse plates is vertically connected to the inner side of the second vertical plate, a sound wave gap is also reserved between the other end of the one group of the inner transverse plates and the first vertical plate, and the inner transverse plates connected to the first vertical plate and the inner transverse plates connected to the second vertical plate are arranged in a staggered; the rotating body is contained in the outer shell, and the plurality of structural units are arranged in parallel and are fixedly connected with the adjacent structural units through the outer side faces of the side plates.
Further, the rotating body is located at the center of the outer shell, and the rotating body can rotate relative to the outer shell.
Further, the length of each of the two side plates is 0.151 λ, the distance between the outer surfaces of the two side plates is 0.130 λ, the thickness of each of the two side plates is 0.0011 λ, the length of each of the first vertical plate and the second vertical plate is 0.086 λ, the distance between the outer surfaces of the two vertical plates is 0.086 λ, the thickness of each of the first vertical plate and the second vertical plate is 0.0086 λ, the width of the sound wave inlet is 0.0035 λ, the width of each of the outer transverse plate and the inner transverse plate is 0.0022 λ, and the distance between the adjacent inner transverse plates is 0.0035 λ, wherein λ is the wavelength of an incident sound wave beam in the air.
The utility model relates to a reflection-type gradient acoustics device of adjustable local reflected wave phase place's beneficial effect is: the acoustic device is internally provided with a rotatable rotator, and the angle of the reflected sound beam can be changed by rotating the angle of the rotator; and the acoustic device is composed of a plurality of same structural units, is convenient for large-scale mass production, is convenient to assemble and has wide practicability.
Drawings
FIG. 1 is a schematic diagram of an external structure of a reflection type gradient acoustic device capable of adjusting the phase of a local reflected wave;
FIG. 2 is a perspective view of the internal structure of the structural unit of FIG. 1;
FIG. 3 is a schematic top view of the internal structure of the structural unit of FIG. 1;
fig. 4 is a schematic top view of the rotor 2 of fig. 2;
fig. 5 is a reflection effect diagram of the reflection type gradient acoustic device with the adjustable local reflected wave phase according to the present invention on the incident sound wave;
fig. 6 is a diagram showing the correspondence between the angle θ and the reflection angle φ of the rotator 2 of the acoustic device capable of adjusting and controlling the phase of the reflected wave according to the present invention.
In the figure: 1-outer shell, 2-rotator, 3-lower plate, 4-upper plate, 5-side plate, 6-end plate, 71-first vertical plate, 72-second vertical plate, 8-outer horizontal plate, 9-inner horizontal plate, 10-incident surface, 11-sound wave inlet and 12-sound wave gap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, a reflection type gradient acoustic device capable of adjusting a phase of a local reflection wave is used for adjusting a reflection phase of an incident acoustic wave with a fixed wavelength in air, so that a reflected wave of the acoustic wave is reflected at a certain angle, wherein the wavelength of the incident acoustic wave is λ; the acoustic device comprises a plurality of structural units, each of which comprises an outer housing 1 and a rotator 2, the outer shell 1 comprises an upper plate 3, a lower plate 4, an end plate 6 and two side plates 5, wherein the upper plate 3 and the lower plate 4 are arranged in parallel up and down, the two side plates 5 are arranged in parallel left and right and are positioned between the upper plate 3 and the lower plate 4, the end plate 6 is vertically connected with one end of the two side plates 5, the upper plate 3, the lower plate 4, the end plate 6 and the two side plates 5 form a rectangular box with one open surface and the other five closed surfaces, wherein one surface of the opening is an incident surface 10, the rotating body 2 is accommodated in the outer shell 1, the structural units are arranged in parallel, all the structural units are fixedly connected with the adjacent structural units through the outer side faces of the side plates 5, and the incidence faces 10 of all the structural units are on the same plane.
Referring to fig. 2, 3 and 4, the rotating body 2 includes two vertical plates, four outer horizontal plates 8 and a plurality of inner horizontal plates 2, the two vertical plates are respectively a first vertical plate 71 and a second vertical plate 72, the first vertical plate 71 and the second vertical plate 72 are arranged in parallel and aligned up and down, two outer horizontal plates 8 of the four outer horizontal plates 8 are vertically connected to the inner side of the first vertical plate 71 and located at two ends of the first vertical plate 71, the other two outer horizontal plates 8 are vertically connected to the inner side of the second vertical plate 72 and located at two ends of the second vertical plate 72, the four outer horizontal plates 8 are symmetrically arranged, a sound wave inlet 11 is left between the two outer horizontal plates 8 at the same end, the width of the sound wave inlet is e, all the inner horizontal plates 9 are divided into two groups, one end of one group of the inner horizontal plates 9 is vertically connected to the inner side of the first vertical plate 71, and a sound wave gap 12 is left between the other end and the, one end of the other group of the inner transverse plates 9 is vertically connected to the inner side of the second vertical plate, sound wave gaps 12 are also reserved between the other end of the inner transverse plates 9 and the first vertical plate 71, the width of all the sound wave gaps 12 is equal, the inner transverse plates 2 connected to the first vertical plate 71 and the inner transverse plates 2 connected to the second vertical plate 72 are arranged in a staggered mode, the interval width between every two adjacent inner transverse plates 9 is equal, and the interval width is f; the rotator 2 is accommodated in the outer shell 1, the rotator 2 is located at the center of the outer shell 1, the rotator 2 can rotate 360 degrees relative to the outer shell 1, and an included angle is formed between the first vertical plate 71 and the plane where the side plate 5 is located, and the included angle is a rotation angle.
Further, referring to fig. 3 and 4, the length y of each of the side plates 5 is 0.151 λ, the distance (i.e., the structural unit width) x between the outer surfaces of the side plates 5 is 0.130 λ, the thickness z of each of the side plates 5 is 0.0011 λ, the length b of each of the first and second risers 71 and 72 is 0.086 λ, the distance between the outer surfaces of the risers (i.e., the width of the rotating body 2) is 0.086 λ, the thickness c of each of the risers of the first and second risers 71 and 72 is 0.0086 λ, the width e of the sound wave inlet 11 is 0.0035 λ, the width f of each of the outer and inner transverse plates 8 and 9 is 0.0022 λ, and the distance g of each of the adjacent inner transverse plates 9 is 0.0035 λ.
Referring to fig. 5, the operation process of the reflection-type gradient acoustic device with adjustable local reflected wave phase of the present invention is specifically as follows: the structural units are arranged side by side, the incident ports 10 of the outer shells of all the structural units form incident surfaces in the same direction, the rotating body 2 is rotated to enable the angle of the rotation angle to be theta, incident sound beams with the wavelength of lambda are emitted in the air perpendicularly to the incident surfaces of the acoustic devices, the incident sound beams are Gaussian sound beams, the incident sound beams touch the acoustic devices to form reflected sound beams, the straight lines of the reflected sound beams and the straight lines of the incident sound beams form an included angle phi, and the phi is the reflection angle of the reflected sound beams; the rotating body 2 is rotated to change the magnitude of the rotation angle theta of the rotating body 2, and the reflection angle phi of the reflected acoustic wave beam changes with the change of the rotation angle theta.
Referring to fig. 6, when the rotation angle θ changes, the reflection angle Φ changes regularly, that is, the reflection angle Φ of the reflected sound wave beam with the wavelength λ in the air can be adjusted by changing the angle of the rotation angle θ, and the reflection angle Φ reflects the phase of the reflected sound wave beam, so that the present invention can effectively adjust the phase of the reflected sound wave in the air.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (3)
1. A reflection type gradient acoustic device capable of adjusting the phase of a local reflected wave is used for adjusting the reflected phase of an incident sound beam with a fixed wavelength in air; the method is characterized in that: the acoustic device comprises a plurality of structural units, each structural unit comprises an outer shell and a rotating body, the outer shell comprises an upper plate, a lower plate, an end plate and two side plates, the upper plate and the lower plate are arranged in parallel, the two side plates are arranged in parallel left and right and are positioned between the upper plate and the lower plate, the ends are vertically connected to one ends of the two side plates, the upper plate, the lower plate, the end plate and the two side plates form a rectangular box with one opening and other five closed surfaces, one surface of the opening is an incident surface, the rotating body comprises a first vertical plate, a second vertical plate, four outer transverse plates and a plurality of inner transverse plates, the first vertical plate and the second vertical plate are arranged in parallel left and right and are aligned up and down, two of the four outer transverse plates are vertically connected to the inner side of the first vertical plate and are positioned at the two ends of the first vertical plate, and the other two outer transverse plates are, the sound wave inlet is reserved between the two outer transverse plates at the same end, all the inner transverse plates are divided into two groups, one end of one group of the inner transverse plates is vertically connected to the inner side of the first vertical plate, a sound wave gap is reserved between the other end of the one group of the inner transverse plates and the second vertical plate, one end of the other group of the inner transverse plates is vertically connected to the inner side of the second vertical plate, a sound wave gap is also reserved between the other end of the one group of the inner transverse plates and the first vertical plate, and the inner transverse plates connected to the first vertical plate and the inner transverse plates connected to the second vertical plate are arranged in a staggered; the rotating body is contained in the outer shell, and the plurality of structural units are arranged in parallel and are fixedly connected with the adjacent structural units through the outer side faces of the side plates.
2. The apparatus of claim 1, wherein the apparatus further comprises: the rotating body is located at the center of the outer shell and can rotate relative to the outer shell.
3. The apparatus of claim 1, wherein the apparatus further comprises: the length of each of the two side plates is 0.151 lambda, the distance between the outer surfaces of the two side plates is 0.130 lambda, the thickness of each of the two side plates is 0.0011 lambda, the length of each of the first vertical plate and the second vertical plate is 0.086 lambda, the distance between the outer surfaces of the two vertical plates is 0.086 lambda, the thickness of each of the first vertical plate and the second vertical plate is 0.0086 lambda, the width of the sound wave inlet is 0.0035 lambda, the width of each of the outer transverse plate and the inner transverse plate is 0.0022 lambda, the distance between the adjacent inner transverse plates is 0.0035 lambda, and lambda is the wavelength of an incident sound wave beam in the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921647422.2U CN211207176U (en) | 2019-09-27 | 2019-09-27 | Reflection type gradient acoustic device capable of adjusting local reflected wave phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921647422.2U CN211207176U (en) | 2019-09-27 | 2019-09-27 | Reflection type gradient acoustic device capable of adjusting local reflected wave phase |
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| Publication Number | Publication Date |
|---|---|
| CN211207176U true CN211207176U (en) | 2020-08-07 |
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| CN201921647422.2U Expired - Fee Related CN211207176U (en) | 2019-09-27 | 2019-09-27 | Reflection type gradient acoustic device capable of adjusting local reflected wave phase |
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| CN (1) | CN211207176U (en) |
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2019
- 2019-09-27 CN CN201921647422.2U patent/CN211207176U/en not_active Expired - Fee Related
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Granted publication date: 20200807 Termination date: 20210927 |