Inflatable sound insulation device based on spacer fabric and self-adaptive adjusting device of inflatable sound insulation device

Abstract

The invention belongs to the technical field of noise reduction, and provides an inflatable sound insulation device based on spacer fabric and a self-adaptive adjusting device thereof.The inflatable sound insulation device comprises the spacer fabric, an upper-layer fixing plate, a middle fixing plate, a lower-layer fixing plate, an air inlet and an air outlet; the spacer fabric comprises an upper-layer fabric and a lower-layer fabric, the upper-layer fabric and the lower-layer fabric are connected through yarns, an upper film is attached to the outer surface of the upper-layer fabric, and a lower film is attached to the outer surface of the lower-layer fabric; therefore, a sealed cavity is formed among the upper-layer fabric, the lower-layer fabric and the middle fixing plate. According to the sound insulation device, a sealed cavity is formed between two layers of spacer fabric, and then high-pressure gas is filled, so that pressure difference is formed between the inside of the sealed cavity and the outside, and the upper surface and the lower surface of the sealed cavity have tension. When the pressure differences are different, the upper and lower surfaces of the sealing cavity have different tensions. And secondly, the upper layer and the lower layer of the spacer fabric are connected through the yarns, so that the middle of the spacer fabric is not bulged under the condition that pressure difference exists between the sealed cavity and the outside.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of noise reduction technology, and particularly relates to an inflatable sound insulation device based on spacer fabric and a self-adaptive adjusting device thereof. BACKGROUND

[0002] In order to improve the space utilization and facilitate the production personnel to be close to the production line, many enterprises will build a closed office area in or near the production workshop. Due to the influence of the noisy environment of the production workshop, an important problem of constructing a closed office area is how to solve the sound insulation problem. It is particularly difficult to solve the sound insulation problem for a simple office of a non-concrete structure.

[0003] The existing commonly used sound insulation materials (such as rock wool board) have limited low-frequency noise insulation effect, and the sound insulation peak appears at a fixed frequency, which is difficult to adapt to the complex and changeable workshop noise. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an inflatable sound insulation device based on spacer fabric and a self-adaptive adjusting device thereof, which can solve the above problems.

[0005] In order to achieve the above purpose, the following technical solutions are adopted in the present application: on the one hand, the present application provides an inflatable sound insulation device based on spacer fabric, which comprises a spacer fabric, an upper fixed plate, an intermediate fixed plate, a lower fixed plate, an air inlet, and an air outlet. The spacer fabric comprises an upper fabric and a lower fabric, the upper fabric and the lower fabric are connected by yarn, the upper fabric is attached with an upper film on the side away from the lower fabric to form a sealed structure, and the lower fabric is attached with a lower film on the side away from the upper fabric to form a sealed structure. The upper fabric is clamped between the upper fixed plate and the intermediate fixed plate, the lower fabric is clamped between the intermediate fixed plate and the lower fixed plate, so as to form a sealed cavity between the upper fabric, the lower fabric and the intermediate fixed plate, and the air inlet and the air outlet are in communication with the sealed cavity.

[0006] As a preferred, the upper film is provided with an additional mass block on the side away from the upper fabric.

[0007] As a preferred, the lower film is provided with a damping vibration-stopping piece on the side away from the lower fabric.

[0008] As a preferred, an upper sealing gasket is clamped between the upper fixed plate and the intermediate fixed plate, and the upper fabric is located on the inner side of the upper sealing gasket.

[0009] Preferably, the upper fixed plate is provided with a first annular gasket layer on the side facing the middle fixed plate, the middle fixed plate is provided with a second annular gasket layer on the side facing the upper fixed plate, and the upper fabric is clamped between the first annular gasket layer and the second annular gasket layer.

[0010] Preferably, a lower sealing gasket is clamped between the middle fixed plate and the lower fixed plate, and the lower fabric is located inside the lower sealing gasket.

[0011] Preferably, the middle fixed plate is provided with a third annular gasket layer on the side facing the lower fixed plate, the lower fixed plate is provided with a fourth annular gasket layer on the side facing the middle fixed plate, and the lower fabric is clamped between the third annular gasket layer and the fourth annular gasket layer.

[0012] Preferably, the upper film is adhesively fixed with the upper fabric.

[0013] Preferably, the lower film is adhesively fixed with the lower fabric.

[0014] In another aspect, the present application provides an adaptive adjustment device for an inflatable sound insulation device, comprising a controller, an inlet control valve, an outlet control valve, a pressure sensor, and a noise collector. The gas inlet is in communication with a gas supply pipe, and the inlet control valve is arranged on the gas supply pipe. The gas outlet is in communication with a gas discharge pipe, and the outlet control valve is arranged on the gas discharge pipe. The pressure sensor is used to detect the pressure in the sealed cavity. The noise collector is used to collect noise signals. The controller is electrically connected with the inlet control valve, the outlet control valve, the pressure sensor, and the noise collector, respectively.

[0015] Compared with the prior art, the present application has the following advantages: 1. The inflatable sound insulation device based on the spacer fabric provided by the present application realizes a double-membrane structure through the spacer fabric, and is sealed with a film around the periphery, so that a sealed cavity is formed between the two layers of the spacer fabric. Then, by filling high-pressure gas, a pressure difference is formed between the inside of the sealed cavity and the outside, so that the upper and lower surfaces of the sealed cavity have tension. Different pressure differences result in different tensions of the upper and lower surfaces of the sealed cavity. During use, the pressure in the sealed cavity can be adjusted according to actual conditions, and the sound insulation peak of the sound insulation device is adjusted, so that the sound insulation effect is better and the application range is wider. In addition, since the upper and lower layers of the spacer fabric are connected by yarns, the middle part will not bulge under the condition of a pressure difference between the sealed cavity and the outside, effectively ensuring the stability of the sound insulation device.

[0016] 2. The air-filled sound insulation device based on the spacer fabric provided by the present application can realize low-frequency sound insulation through the additional mass when the upper and lower surfaces of the sealed cavity are tensioned. By adjusting the tension of the upper and lower surfaces of the sealed cavity, the weight or position of the additional mass, low-frequency sound insulation of different frequencies can be realized.

[0017] 3. The air-filled sound insulation device based on the spacer fabric provided by the present application can realize low-frequency sound insulation through the additional mass when the upper and lower surfaces of the sealed cavity are tensioned. By adjusting the tension of the upper and lower surfaces of the sealed cavity, the weight or position of the additional mass, low-frequency sound insulation of different frequencies can be realized.

[0018] 4. The self-adaptive adjusting device of the air-filled sound insulation device provided by the present application can adjust the pressure in the sealed cavity through the opening and closing of the inlet control valve and the outlet control valve controlled by the controller, so that the sound insulation device can adaptively adjust the sound insulation peak value according to the external noise frequency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective structural schematic diagram of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 2 An explosion structural schematic diagram of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 3 A sectional structural schematic diagram of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 4 A perspective structural schematic diagram of the spacer fabric of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 5 A sectional structural schematic diagram of the middle fixed plate and the spacer fabric of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 6 A sectional structural schematic diagram of the air inlet and the related parts of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 7 A side structural schematic diagram of the middle fixed plate and the related parts of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 8 A Figure 7 An enlarged schematic diagram of the middle A; Figure 9 A perspective structural schematic diagram of the upper fixed plate of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 10 A perspective structural schematic diagram of the lower fixed plate of the air-filled sound insulation device based on the spacer fabric provided by the embodiment of the present application is provided. Figure 11 A comparison diagram of a pneumatic sound insulation device based on spacer fabric provided in an embodiment of the present invention, showing the presence and absence of yarn when high-pressure gas is filled into a sealed cavity; Figure 12 A schematic diagram of the connection structure of an adaptive adjustment device for an inflatable sound insulation device provided in an embodiment of the present invention; Figure 13 This is a schematic diagram illustrating the working process of an adaptive adjustment device for an inflatable sound insulation device provided in an embodiment of the present invention.

[0020] The attached diagram lists the components represented by each number as follows: 1. Upper fixing plate; 2. Intermediate fixing plate; 3. Lower fixing plate; 4. Air intake; 5. Air vent; 6. Upper layer fabric; 7. Lower layer fabric; 8. Apply film; 9. Lower membrane; 10. Yarn; 11. Additional mass block; 12. Damping vibration damping pads; 13. Install the sealing gasket; 14. First annular cushion layer; 15. Second annular cushion layer; 16. Lower sealing gasket; 17. Third annular cushion layer; 18. Fourth annular cushion layer; 19. Controller; 20. Inlet control valve; 21. Outlet control valve; 22. Pressure sensor; 23. Noise collector; 24. Bolts; 25. Nut. Detailed Implementation

[0021] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] The embodiment provides an inflatable sound insulation device based on a spacer fabric, which comprises the spacer fabric, an upper fixed plate 1, a middle fixed plate 2, a lower fixed plate 3, an air inlet 4 and an air outlet 5.

[0023] The spacer fabric comprises an upper fabric 6 and a lower fabric 7, the upper fabric 6 is connected with the lower fabric 7 through yarn 10, the upper fabric 6 is attached with an upper film 8 on the side away from the lower fabric 7, so that the upper fabric 6 forms a sealed structure, and the lower fabric 7 is attached with a lower film 9 on the side away from the upper fabric 6, so that the lower fabric 7 forms a sealed structure. For example, referring to Figure 4 The upper fabric 6 and the lower fabric 7 are both rectangular plate structures, and the upper fabric 6 and the lower fabric 7 are arranged in parallel and at intervals. The yarn 10 is arranged in a matrix between the upper fabric 6 and the lower fabric 7, the upper and lower ends of the yarn 10 are connected with the upper fabric 6 and the lower fabric 7 respectively, and the yarn 10 is in a tensioned state.

[0024] For example, referring to Figure 2 The upper film 8 is a non-porous TPU film, the upper film 8 is matched with the upper fabric 6, and the upper film 8 and the upper surface of the upper fabric 6 are bonded to form an integrated body, so that the surface of the upper fabric 6 is airtight and no longer breathable. The lower film 9 is a non-porous TPU film, the lower film 9 is matched with the lower fabric 7, and the lower film 9 and the lower surface of the lower fabric 7 are bonded to form an integrated body, so that the surface of the lower fabric 7 is airtight and no longer breathable.

[0025] The upper fabric 6 is clamped between the upper fixed plate 1 and the middle fixed plate 2, and the lower fabric 7 is clamped between the middle fixed plate 2 and the lower fixed plate 3, so that a sealed cavity is formed between the upper fabric 6, the lower fabric 7 and the middle fixed plate 2, and the air inlet 4 and the air outlet 5 are in communication with the sealed cavity. For example, referring to Figure 2 The upper fixed plate 1, the middle fixed plate 2 and the lower fixed plate 3 are all annular structures, and the sizes of the upper fixed plate 1, the middle fixed plate 2 and the lower fixed plate 3 are the same.

[0026] For example, referring to Figure 5 The middle fixed plate 2 is located between the upper fabric 6 and the lower fabric 7, the yarn 10 is located on the inner side of the middle fixed plate 2, and the lower surface of the upper fabric 6 is attached to the upper surface of the middle fixed plate 2, and the upper surface of the lower fabric 7 is attached to the lower surface of the middle fixed plate 2. Referring to Figure 3 The lower surface of the upper fixed plate 1 is attached to the upper surface of the upper film 8, and the upper surface of the lower fixed plate 3 is attached to the lower surface of the lower film 9 (since the upper film 8 and the lower film 9 are thin, they are not indicated in the figure).

[0027] For example, referring to Figures 1-3The upper fixing plate 1, the middle fixing plate 2 and the lower fixing plate 3 are provided with through holes, the through holes of the upper fixing plate 1, the middle fixing plate 2 and the lower fixing plate 3 are aligned after being overlapped, the through holes of the upper fixing plate 1, the middle fixing plate 2 and the lower fixing plate 3 are sequentially penetrated by the bolt 24, then the bolt 24 is screwed and fixed with the nut 25, and the upper fixing plate 1, the middle fixing plate 2 and the lower fixing plate 3 can be locked and fixed. The four edges of the upper fabric 6 (and the upper film 8) are clamped and fixed by the upper fixing plate 1 and the middle fixing plate 2, the four edges of the lower fabric 7 (and the lower film 9) are clamped and fixed by the middle fixing plate 2 and the lower fixing plate 3, and then a sealed cavity can be formed between the upper fabric 6, the lower fabric 7 and the middle fixing plate 2. It should be noted that the bolt 24 does not interfere with the upper fabric 6 and the lower fabric 7.

[0028] For example, referring to Figure 6 The upper surface of the upper fixing plate 1 is provided with an air inlet 4, the upper fixing plate 1 is provided with a first air inlet channel, and the middle fixing plate 2 is provided with a second air inlet channel. One end of the second air inlet channel is communicated with the first air inlet channel, the other end of the second air inlet channel extends to the inner side wall of the middle fixing plate 2, and the first air inlet channel extends to the upper surface of the upper fixing plate 1 away from the other end of the second air inlet channel, so that the air inlet 4 can extend to the inner side wall of the middle fixing plate 2 through the air inlet channel, and gas can be injected into the sealed cavity through the air inlet 4.

[0029] For example, referring to Figure 6 The upper surface of the upper fixing plate 1 is also provided with an air outlet 5, the upper fixing plate 1 is provided with a first air outlet channel, and the middle fixing plate 2 is provided with a second air outlet channel. One end of the second air outlet channel is communicated with the first air outlet channel, the other end of the second air outlet channel extends to the inner side wall of the middle fixing plate 2, and the first air outlet channel extends to the upper surface of the upper fixing plate 1 away from the other end of the second air outlet channel, so that the air outlet 5 can extend to the inner side wall of the middle fixing plate 2 through the air outlet channel, and the gas in the sealed cavity can be released through the air outlet 5.

[0030] Based on the above structure, the air-filled sound insulation device provided by the embodiment can realize a double-membrane structure by coating TPU film on the outer surfaces of the upper fabric 6 and the lower fabric 7, and can form a sealed cavity between the upper fabric 6 and the lower fabric 7 by clamping and fixing the upper fixing plate 1, the middle fixing plate 2 and the lower fixing plate 3 for sealing around. Then, by filling high-pressure gas, a pressure difference is formed between the inside and outside of the sealed cavity, so that the upper and lower surfaces of the sealed cavity have tension. The tension of the upper and lower surfaces of the sealed cavity is different when the pressure difference is different. The pressure in the sealed cavity can be adjusted according to the actual situation during use, and the sound insulation peak of the sound insulation device can be adjusted, so that the sound insulation effect is better and the application range is wider.

[0031] Secondly, referring to Figure 11Since the upper fabric 6 and the lower fabric 7 are connected by the matrix distributed yarns 10, in the case that there is a pressure difference between the sealed cavity and the outside, the middle part will not bulge, effectively ensuring the stability of the sound insulation device. When there is no yarn 10 for connection, the air pressure in the sealed cavity is higher than the outside, and the sealed cavity will bulge.

[0032] On the basis of the above technical solution, in the technical solution provided by the embodiment, the upper film 8 is provided with an additional mass 11 on the side away from the upper fabric 6. For example, referring to Figures 1-3 The upper surface (the side facing the sound coming direction) of the upper film 8 is bonded with the additional mass 11. When the upper and lower surfaces of the sealed cavity are tensioned, the additional mass 11 can be bonded to realize low-frequency sound insulation. By adjusting the tension of the upper and lower surfaces of the sealed cavity, the weight or position of the additional mass 11, low-frequency sound insulation of different frequencies can be realized. In actual use, the weight or position of the additional mass 11 can be designed according to specific needs.

[0033] In the technical solution provided by the embodiment, the lower film 9 is provided with a damping vibration-stopping piece 12 on the side away from the lower fabric 7. For example, referring to Figures 2-3 The lower surface of the lower film 9 is bonded with the damping vibration-stopping piece 12. The damping vibration-stopping piece 12 can suppress the vibration of the lower surface of the sealed cavity caused by sound waves, achieving the effect of further sound insulation.

[0034] In the technical solution provided by the embodiment, the upper fixed plate 1 and the middle fixed plate 2 are clamped with an upper sealing gasket 13, and the upper fabric 6 is located inside the upper sealing gasket 13. The first annular gasket layer 14 is arranged on the side of the upper fixed plate 1 facing the middle fixed plate 2, and the second annular gasket layer 15 is arranged on the side of the middle fixed plate 2 facing the upper fixed plate 1, and the upper fabric 6 is clamped between the first annular gasket layer 14 and the second annular gasket layer 15. The middle fixed plate 2 and the lower fixed plate 3 are clamped with a lower sealing gasket 16, and the lower fabric 7 is located inside the lower sealing gasket 16. The third annular gasket layer 17 is arranged on the side of the middle fixed plate 2 facing the lower fixed plate 3, and the fourth annular gasket layer 18 is arranged on the side of the lower fixed plate 3 facing the middle fixed plate 2, and the lower fabric 7 is clamped between the third annular gasket layer 17 and the fourth annular gasket layer 18. For example, referring to Figure 9 The first annular gasket layer 14 is fixedly arranged on the lower surface of the upper fixed plate 1, and the first annular gasket layer 14 is arranged along the inner ring edge of the upper fixed plate 1. Moreover, the outer ring of the first annular gasket layer 14 is matched with the upper fabric 6.

[0035] For example, referring to Figures 7-8The upper surface of the middle fixed plate 2 is fixedly provided with a second annular gasket 15, and the lower surface of the middle fixed plate 2 is fixedly provided with a third annular gasket 17. The second annular gasket 15 and the third annular gasket 17 are arranged along the inner ring edge of the middle fixed plate 2. The outer ring of the second annular gasket 15 is matched with the upper fabric 6. The outer ring of the third annular gasket 17 is matched with the lower fabric 7.

[0036] For example, referring to Figure 10 The upper surface of the lower fixed plate 3 is fixedly provided with a fourth annular gasket 18, and the fourth annular gasket 18 is arranged along the inner ring edge of the lower fixed plate 3. The outer ring of the fourth annular gasket 18 is matched with the lower fabric 7.

[0037] In this way, the upper fabric 6 (and the upper film 8) can be clamped between the first annular gasket 14 and the second annular gasket 15. The first annular gasket 14 and the second annular gasket 15 not only can play a positioning role, but also can enhance the sealing between the upper fixed plate 1 and the middle fixed plate 2. Similarly, the lower fabric 7 (and the lower film 9) can be clamped between the third annular gasket 17 and the fourth annular gasket 18. The third annular gasket 17 and the fourth annular gasket 18 not only can play a positioning role, but also can enhance the sealing between the lower fixed plate 3 and the middle fixed plate 2.

[0038] For example, referring to Figures 2-3 The upper sealing gasket 13 is in an annular structure. The inner ring of the upper sealing gasket 13 is matched with the upper fabric 6, that is, the upper fabric 6 is located on the inner side of the upper sealing gasket 13. In this way, when the upper fixed plate 1 and the middle fixed plate 2 are pressed tightly, the upper sealing gasket 13 can improve the sealing between the upper fixed plate 1 and the middle fixed plate 2. At the same time, due to the blocking effect of the first annular gasket 14 and the second annular gasket 15, the upper sealing gasket 13 can be prevented from being extruded and deformed, thereby avoiding extrusion on the upper fabric 6 and effectively ensuring the stability of the upper fabric 6.

[0039] Similarly, the lower sealing gasket 16 is in an annular structure. The inner ring of the lower sealing gasket 16 is matched with the lower fabric 7, that is, the lower fabric 7 is located on the inner side of the lower sealing gasket 16. In this way, when the lower fixed plate 3 and the middle fixed plate 2 are pressed tightly, the lower sealing gasket 16 can improve the sealing between the lower fixed plate 3 and the middle fixed plate 2. At the same time, due to the blocking effect of the third annular gasket 17 and the fourth annular gasket 18, the lower sealing gasket 16 can be prevented from being extruded and deformed, thereby avoiding extrusion on the lower fabric 7 and effectively ensuring the stability of the lower fabric 7.

[0040] The upper sealing gasket 13 and the lower sealing gasket 16 are also provided with through holes for ensuring the smooth passing of the bolts 24 and the smooth extension of the air inlet 4 and the air outlet 5.

[0041] In summary, the preparation method of the inflatable sound insulation device provided in the embodiment can include the following processes: 1)The upper fabric 6 and the lower fabric 7 are coated with adhesive on the outer surface. After uniform coating, the non-porous TPU film is adhered and pressed to make the TPU film evenly coated on the outer surface of the upper fabric 6 and the lower fabric 7, so that the upper fabric 6 and the lower fabric 7 are airtight and no longer breathable.

[0042] 2)The middle fixed plate 2 is placed between the upper fabric 6 and the lower fabric 7, so that the upper surface and the lower surface of the middle fixed plate 2 are in contact with the upper fabric 6 and the lower fabric 7 respectively.

[0043] 3)Rubber sealing pads (upper sealing pad 13 and lower sealing pad 16) are placed on the parts of the upper and lower surfaces of the middle fixed plate 2 that are not in contact with the upper fabric 6 and the lower fabric 7.

[0044] 4)The upper fixed plate 1 and the lower fixed plate 3 are installed, and the upper fabric 6 and the lower fabric 7 are clamped with the fixed device (upper fixed plate 1, middle fixed plate 2, and lower fixed plate 3) through the extrusion force of the bolt 24, and the rubber sealing pads are also compressed.

[0045] 5)The additional mass 11 is attached to the upper surface of the upper fabric 6 (the side facing the direction of sound transmission). The size and attachment position of the additional mass 11 can affect the sound insulation frequency, and can be designed according to specific needs.

[0046] 6)The damping vibration stop sheet 12 is attached to the lower surface of the lower fabric 7.

[0047] 7)The air inlet 4, the air outlet 5, and the pressure sensor 22 are installed. High-pressure gas can enter the middle layer of the spacer fabric through the air inlet 4, so that the air pressure in the middle layer is higher than normal pressure. When high-pressure gas needs to be discharged, it can be discharged through the air outlet 5. The pressure sensor 22 is used to measure the air pressure in the middle layer of the spacer fabric.

[0048] It should be noted that when the sound insulation device is used alone (without the need to be combined with the subsequent adaptive control device), the air inlet 4 and the air outlet 5 can be combined into one air nozzle (similar to the tire valve core), and the pressure sensor 22 can be cancelled.

[0049] The embodiment provides an adaptive adjustment device for the inflatable sound insulation device, which comprises a controller 19, an inlet control valve 20, an outlet control valve 21, a pressure sensor 22, and a noise collector 23. The air inlet 4 is in communication with a gas supply pipe, and the inlet control valve 20 is arranged on the gas supply pipe. The air outlet 5 is in communication with an exhaust pipe, and the outlet control valve 21 is arranged on the exhaust pipe. For example, see Figure 12The inlet control valve 20 and the outlet control valve 21 can be solenoid valves. The air inlet 4 is connected to a high-pressure air source through a gas supply pipe. When the inlet control valve 20 is opened, high-pressure gas provided by the air source can enter the air inlet 4 through the gas supply pipe, then enter the sealed cavity, and thus the air pressure in the sealed cavity can be increased. The air outlet 5 is vented through an exhaust pipe. When the outlet control valve 21 is opened, the high-pressure gas in the sealed cavity can enter the exhaust pipe through the air outlet 5 and be vented, and thus the air pressure in the sealed cavity can be reduced.

[0050] The pressure sensor 22 is used to detect the pressure in the sealed cavity. For example, referring to Figure 12 The pressure sensor 22 is arranged on the upper surface of the upper fixed plate 1. The structure of the pressure sensor 22 is similar to that of the air inlet 4 or the air outlet 5, which will not be described here. The pressure sensor 22 can detect the air pressure in the sealed cavity.

[0051] The noise collector 23 is used to collect noise signals. For example, referring to Figure 12 The noise collector 23 mainly includes a microphone, an amplifier, a filter, a data acquisition module, and the like. The noise collector 23 can collect transmission sound wave data.

[0052] The controller 19 is electrically connected to the inlet control valve 20, the outlet control valve 21, the pressure sensor 22, and the noise collector 23. For example, referring to Figure 12 The controller 19 includes a storage unit, a processor, a transmitting unit, and a receiving unit. The transmitting unit can control the opening and closing of the inlet control valve 20 and the outlet control valve 21. The pressure sensor 22 and the noise collector 23 can transmit the collected signals to the receiving unit, and the processor can analyze and judge the signals. Then, the opening and closing of the inlet control valve 20 and the outlet control valve 21 can be adjusted to control the air pressure in the sealed cavity.

[0053] The processor can be a central processing unit (CPU), a digital signal processor (DSP), a field programmable gate array (FPGA), or the like.

[0054] In summary, referring to Figure 13 The embodiment provides a control method of an adaptive adjustment device of an inflatable sound insulation device. 1) Real-time detection of the internal pressure value of the sealed cavity by the pressure sensor 22, and determination of the working frequency of the sound insulation device under the current pressure through testing, which is the main noise reduction frequency of the sound insulation device here; 2) Measurement of the working frequency corresponding to different pressure values, and training and establishment of a model between the internal pressure value of the sealed cavity and the working frequency by using the method of machine learning, and writing the corresponding relationship into the storage unit of the controller; 3) Setting a noise collector 23 on the sound wave transmission side of the sound insulation device to obtain transmission sound wave data, and transmitting the obtained data into the controller 19; 4) The processor in the controller 19 calculates the corresponding internal pressure value of the sealed cavity (under which the working frequency of the sound insulation device matches the noise frequency) based on the data transmitted from the noise collector 23, and then combines the model in the storage unit; 5) Comparing the calculated internal pressure value of the sealed cavity with the actual pressure value read by the pressure sensor 22, calculating the difference between the two, and adjusting the opening and closing of the inlet control valve 20 and the outlet control valve 21 according to the relationship of the difference through the emission unit, so as to realize the self-adaptive adjustment of the internal pressure of the sealed cavity, and finally achieve the required internal pressure. When the pressure adjustment is completed, the sound insulation device reaches the predetermined working frequency.

[0055] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0056] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0057] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0058] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. An inflatable sound insulation device based on spacer fabric, characterized in that, It includes a spacer fabric, an upper fixing plate (1), a middle fixing plate (2), a lower fixing plate (3), an air inlet (4), and an air outlet (5); The spacer fabric includes an upper fabric (6) and a lower fabric (7). The upper fabric (6) and the lower fabric (7) are connected by yarns (10). An upper film (8) is attached to the side of the upper fabric (6) facing away from the lower fabric (7) so that the upper fabric (6) forms a sealed structure. A lower film (9) is attached to the side of the lower fabric (7) facing away from the upper fabric (6) so that the lower fabric (7) forms a sealed structure. The upper fabric (6) is sandwiched between the upper fixing plate (1) and the middle fixing plate (2), and the lower fabric (7) is sandwiched between the middle fixing plate (2) and the lower fixing plate (3), so that a sealed cavity is formed between the upper fabric (6), the lower fabric (7), and the middle fixing plate (2), and the air inlet (4) and the air outlet (5) are both connected to the sealed cavity.

2. The inflatable sound insulation device according to claim 1, characterized in that, The upper membrane (8) has an additional mass block (11) on the side facing away from the upper fabric (6).

3. The inflatable sound insulation device according to claim 1, characterized in that, The lower membrane (9) has a damping damping plate (12) on the side facing away from the lower fabric (7).

4. The inflatable sound insulation device according to claim 1, characterized in that, The upper sealing gasket (13) is sandwiched between the upper fixing plate (1) and the middle fixing plate (2), and the upper fabric (6) is located inside the upper sealing gasket (13).

5. The inflatable sound insulation device according to claim 1, characterized in that, The upper fixing plate (1) is provided with a first annular pad (14) on the side facing the middle fixing plate (2), and the middle fixing plate (2) is provided with a second annular pad (15) on the side facing the upper fixing plate (1). The upper fabric (6) is sandwiched between the first annular pad (14) and the second annular pad (15).

6. The inflatable sound insulation device according to claim 1, characterized in that, The lower sealing gasket (16) is sandwiched between the intermediate fixing plate (2) and the lower fixing plate (3), and the lower fabric (7) is located inside the lower sealing gasket (16).

7. The inflatable sound insulation device according to claim 1, characterized in that, The middle fixing plate (2) has a third annular pad (17) on the side facing the lower fixing plate (3), and the lower fixing plate (3) has a fourth annular pad (18) on the side facing the middle fixing plate (2). The lower fabric (7) is sandwiched between the third annular pad (17) and the fourth annular pad (18).

8. The inflatable sound insulation device according to claim 1, characterized in that, The upper film (8) is bonded and fixed to the upper fabric (6).

9. The inflatable sound insulation device according to claim 1, characterized in that, The lower membrane (9) is bonded and fixed to the lower fabric (7).

10. An adaptive adjustment device for an inflatable sound insulation device as described in any one of claims 1-9, characterized in that, Includes controller (19), inlet control valve (20), outlet control valve (21), pressure sensor (22), and noise collector (23); The air inlet (4) is connected to the air supply pipe, and the inlet control valve (20) is installed on the air supply pipe; the air outlet (5) is connected to the exhaust pipe, and the outlet control valve (21) is installed on the exhaust pipe; The pressure sensor (22) is used to detect the pressure inside the sealed cavity; The noise collector (23) is used to collect noise signals; The controller (19) is electrically connected to the inlet control valve (20), the outlet control valve (21), the pressure sensor (22), and the noise collector (23), respectively.

Images