Silent cover whole machine noise reduction structure

Abstract

The present invention provides a noise reduction structure for a soundproof cover, comprising a main body, an air intake part, and an exhaust part. The main body comprises a main box body composed of a bottom plate, a top plate, and side plates. The front and rear sides of the main box body are open to connect the air intake part and the exhaust part. The air intake part comprises an air intake guide box and an air intake sound insulation box. The air intake sound insulation box is sealed to the front side of the main box body. The air intake guide box is located on the lower side of the main box body and comprises an air intake box body, an air intake baffle, and a push-pull plate. The push-pull plate is provided with the air guide hole array. An air inlet is provided on a horizontal side of the air intake box body. The air intake baffle is arranged in an inclined manner in the air intake box body and is densely covered with an array of blocking holes. The present invention can realize air exchange inside the device, ensure the timely heat dissipation of the internal air circulation, and block the noise directly out due to the elimination of the opening in the front plate. The noise is weakened multiple times in both the air intake part and the exhaust part, achieving a very good noise reduction effect.

Description

Technical Field

[0001] The invention relates to a complete noise reduction structure of a silent cover. Background Art

[0002] In the current laboratory analysis industry, when setting up standard laboratories, a silent enclosure is required to effectively reduce instrument noise. Since most instruments have ambient temperature requirements, effective noise reduction and maintaining a moderately high temperature are two essential criteria for a silent enclosure.

[0003] The current common practice is to achieve noise reduction by adding layers, but this not only increases the cost, but also has little effect. Moreover, simply adding a board may cause the temperature to be too high, causing the instrument to thermally trip. Summary of the Invention

[0004] Based on this, the present invention provides a noise reduction structure for a silent cover, which can effectively reduce noise and ensure that the internal temperature is not too high, thereby improving the user experience.

[0005] The technical solution adopted in the present invention is:

[0006] A noise reduction structure for a complete silent cover, characterized in that it comprises a main body, an air intake part and an exhaust part, wherein:

[0007] The main body includes a main box body composed of a bottom plate, a top plate and side plates, and the front and rear sides of the main box body are open to connect the air intake part and the exhaust part;

[0008] The air intake part includes an air intake guide box and an air intake sound insulation box. The air intake sound insulation box is sealed and connected to the front side of the main box body. The plate surface connected to the main box body is called the front plate. The front plate is densely covered with an air intake hole array, and the bottom surface of the air intake sound insulation box is provided with an air intake inlet; the air intake guide box is located at the lower side of the air intake sound insulation box, and the air intake guide box is provided with an air guide hole array corresponding to the air intake hole of the air intake sound insulation box; the air intake guide box is composed of an air intake box body, an air intake baffle and a push-pull plate. The air guide hole array is provided on the push-pull plate, and the push-pull plate can be horizontally movably installed on the air intake box body. By means of the horizontal displacement of the push-pull plate, the number of overlaps between the air guide hole array and the air intake inlet can be changed. An air inlet is provided on the horizontal side of the air intake box body. The air intake baffle is installed in the air intake box body, and is densely covered with an isolation hole array and arranged obliquely.

[0009] The noise reduction structure of the whole machine with a silent cover, wherein the exhaust part includes a fan mounting plate, a partition plate and an exhaust sound insulation plate, wherein:

[0010] The exhaust sound insulation board is relatively tightly fitted with the fan mounting plate, the interlayer plate is sandwiched between the fan mounting plate and the exhaust sound insulation board, a noise exhaust cavity is formed between the fan mounting plate and the interlayer plate, and a buffer cavity is formed between the exhaust sound insulation board and the interlayer plate;

[0011] The fan mounting plate is closely connected to the rear side of the main housing and is provided with an air inlet for mounting the fan. A fan sound insulation cover is closely connected to the air inlet. One end of the fan sound insulation cover shields the fan, and the other end extends into the buffer cavity and is provided with an array of through holes.

[0012] The exhaust sound insulation board is provided with an exhaust port, an exhaust sound insulation cover is closely connected to the exhaust port, and the exhaust sound insulation cover extends into the noise exhaust cavity at one end opposite to the exhaust port and is provided with a perforated array;

[0013] The partition plate is provided with a through hole for the fan sound insulation cover and the exhaust sound insulation cover to pass through in close contact, and is also provided with a backflow hole for communicating the buffer cavity with the noise exhaust cavity.

[0014] The noise reduction structure of the whole machine with a silent cover is characterized in that sound-absorbing material is provided on the inner wall of the fan mounting plate and / or the exhaust sound insulation plate and / or the fan sound insulation cover and / or the exhaust sound insulation cover.

[0015] The noise reduction structure of the whole machine of the silent cover is characterized in that a wind grille is provided on the return hole and / or the exhaust port.

[0016] The noise reduction structure of the whole machine of the silent cover is characterized in that the bottom plate is covered with a shock-absorbing pad, and instruments can be placed on the shock-absorbing pad.

[0017] The noise reduction structure of the whole soundproof cover is characterized in that sound-absorbing material is affixed to the inner sides of the top plate and the side plates.

[0018] The noise reduction structure of the whole machine with a silent cover, wherein the inner sides of the air intake guide box and the air intake sound insulation box are affixed with sound-absorbing materials.

[0019] The noise reduction structure of the whole machine with a silent cover, wherein the sound-absorbing material is sound-insulating cotton.

[0020] The noise reduction structure of the whole machine of the silent cover is described, wherein the bottom plate is inserted between the air intake sound insulation box and the air intake guide box, and a ventilation opening is reserved corresponding to the air intake hole of the air intake sound insulation box.

[0021] Compared with conventional structures, the noise reduction effect of the noise shield of the present invention is improved at both the front and rear ends. This is because it can effectively reduce noise by refraction, and this structure does not affect the air intake of the noise shield, and can maintain a certain internal temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a cross-sectional view of the overall structure of the noise reduction structure of the silent cover provided by the present invention.

[0023] Figure 2 It is a cross-sectional structural diagram of the air intake guide box.

[0024] Figure 3 This is a three-dimensional structural diagram of the air intake guide box.

[0025] Figure 4 This is an exploded perspective view of the air intake guide box.

[0026] Figure 5 This is a three-dimensional exploded view of the exhaust noise reduction structure.

[0027] Figure 6 It is a combined cross-sectional view of the exhaust noise reduction structure.

[0028] Explanation of the reference numerals: bottom plate 1; top plate 2; shock-absorbing pad 3; sound-absorbing material 4; air intake sound insulation box 5; front plate 6; air intake hole 7; ventilation opening 8; air intake box body 9; air intake partition 10; push-pull plate 11; air guide hole array 12; air inlet 13; fan mounting plate 14; partition plate 15; exhaust sound insulation board 16; return hole 17; fan 18; fan sound insulation cover 19; exhaust port 20; noise exhaust chamber 21; buffer chamber 22; exhaust sound insulation cover 23. DETAILED DESCRIPTION

[0029] The present invention provides a noise reduction structure of a soundproof cover. Figures 1-6 As shown, it includes a main body, a detachable air intake part and a detachable exhaust part, wherein:

[0030] The main body includes a main box body composed of a bottom plate 1, a top plate 2 and side plates (the material of the plates is recommended to be sheet metal for economic considerations, and a higher density material can be selected if the demand is higher). The front and rear sides of the main box body are open to connect the air intake and exhaust parts; the bottom plate 1 is covered with a shock-absorbing pad 3 (preferably made of EPE material), and the shock-absorbing pad 3 can be used to place instruments. The top plate 2 and the inner side of the side plates are covered with sound-absorbing material 4 (such as sound-absorbing cotton) to reduce the noise level from the sides and top;

[0031] The air intake part includes an air intake guide box and an air intake sound insulation box 5. The inner sides of the air intake guide box and the air intake sound insulation box 5 are affixed with sound absorbing materials 4 (such as sound absorbing cotton), wherein:

[0032] The air intake sound insulation box 5 is sealed and connected to the front side of the main box body. The panel surface connected to the main box body is called the front panel 6. The front panel 6 is densely covered with an array of air intake holes. The bottom surface of the air intake sound insulation box 5 is provided with an air intake hole 7. The air intake guide box is located below the air intake sound insulation box 5, and the air intake guide box is provided with an air guide hole array 12 corresponding to the air intake hole 7 of the air intake sound insulation box 5. In the present invention, the bottom panel 1 is inserted between the air intake sound insulation box 5 and the air intake guide box, and a ventilation opening 8 is reserved thereon corresponding to the air intake hole 7 of the air intake sound insulation box 5.

[0033] The air intake guide box is composed of an air intake box body 9, an air intake baffle 10 and a push-pull plate 11. The push-pull plate 11 is provided with the air guide hole array 12, and the push-pull plate 11 can be horizontally movably installed on the air intake box body 9. By virtue of the horizontal displacement of the push-pull plate 11, the number of overlaps between the air guide hole array 12 and the air inlet hole 7 can be changed, thereby changing the ventilation volume and the conduction direction of the noise. An air inlet 13 is provided on a horizontal side of the air intake box body 9. The air intake baffle 10 is installed in the air intake box body 9, and is densely covered with an array of blocking holes and arranged obliquely, so that the noise is refracted and absorbed in the air intake guide box, which has a good noise reduction effect.

[0034] The exhaust part includes a fan mounting plate 14, an interlayer plate 15 and an exhaust sound insulation plate 16, wherein:

[0035] The exhaust sound insulation board 16 is relatively tightly fitted with the fan mounting plate 14, and the interlayer board 15 is sandwiched between the fan mounting plate 14 and the exhaust sound insulation board 16. A noise exhaust cavity 21 is formed between the fan mounting plate 14 and the interlayer board 15, and a buffer cavity 22 is formed between the exhaust sound insulation board 16 and the interlayer board 15.

[0036] The fan mounting plate 14 is closely attached to the rear side of the main housing and is provided with an air inlet for mounting a fan 18. A fan soundproof cover 19 is closely attached to the air inlet. One end of the fan soundproof cover 19 shields the fan 18, and the other end extends into the buffer chamber 22 and is densely covered with an array of through holes on the side.

[0037] The exhaust sound insulation board 16 is provided with an exhaust port 20, and an exhaust sound insulation cover 23 is closely connected to the exhaust port 20. The exhaust sound insulation cover 23 extends into the noise exhaust cavity 21 at an end opposite to the exhaust port 20 and is densely covered with a perforated array on the side thereof;

[0038] The interlayer plate 15 is provided with a through hole for the fan soundproof cover 19 and the exhaust soundproof cover 23 to pass through closely. A backflow hole 17 is provided between the two through holes to connect the buffer chamber 22 with the noise exhaust chamber 21. Wind grilles can be provided on the backflow hole 17 and the exhaust port 20 to adjust the exhaust speed.

[0039] The inner walls of the fan mounting plate 14 , the exhaust sound insulation plate 16 , the fan sound insulation cover 19 and the exhaust sound insulation cover 23 are all provided with sound absorbing materials 4 (such as sound insulation cotton).

[0040] When the present invention is used:

[0041] In terms of temperature, air flows from the bottom of the silent cover to the inside of the silent cover through the air intake guide box to achieve internal ventilation; the high-temperature gas is extracted by the fan on the rear side, ensuring internal air circulation and timely heat dissipation;

[0042] In terms of noise reduction, since the opening of the front plate 6 is eliminated, the direct noise is blocked, and part of the noise generated by the instrument is transmitted from the ventilation opening 8 on the bottom plate 1 of the silent cover to the air intake guide box, and further refraction noise reduction is achieved in the air intake guide box, achieving a better noise reduction effect; the other part of the noise is transmitted to the tail end, and the noise is first weakened by the buffer cavity 22 and then weakened by the noise exhaust cavity 21.

[0043] The noise reduction structure of the whole machine provided by the present invention has a good noise reduction effect. A simulation experiment was conducted with the water circulation H-3000 as the noise source. The experimental data are shown below:

[0044] Equipped instrument: Water cycle H-3000

[0045] Ambient noise: 36-38dB

[0046] Ambient temperature: 25℃

[0047] Test distance: 1m

[0048]

[0049]

[0050] The data shows that the noise reduction effect of the silent cover of the present invention is improved at both the front and rear ends compared to conventional structures. This is because it can effectively reduce noise through refraction, and this structure does not affect the air intake of the silent cover, and can maintain a certain internal temperature.

Claims

1. A noise reduction structure for a complete silent cover, characterized in that: It includes a main body, an air intake part and an exhaust part, wherein: The main body includes a main box body composed of a bottom plate, a top plate and side plates, and the front and rear sides of the main box body are open to connect the air intake part and the exhaust part; The air intake part includes an air intake guide box and an air intake sound insulation box, the inner sides of the air intake guide box and the air intake sound insulation box are covered with sound-absorbing material, the air intake sound insulation box is sealed and connected to the front side of the main box body, and the plate surface connected to the main box body is called the front plate, the front plate is densely covered with an array of air intake holes, and the bottom surface of the air intake sound insulation box is provided with an air intake hole; the air intake guide box is located at the lower side of the air intake sound insulation box, and the air intake guide box is provided with an air guide hole array corresponding to the air intake hole of the air intake sound insulation box; the air intake guide box is composed of an air intake box body, an air intake baffle and a sliding plate, the air guide hole array is provided on the sliding plate, and the sliding plate can be horizontally movably installed on the air intake box body, and the number of overlaps between the air guide hole array and the air intake hole can be changed by means of the horizontal displacement of the sliding plate. An air inlet is provided on a horizontal side of the air intake box body, and the air intake baffle is installed in the air intake box body, and is densely covered with an array of blocking holes and is arranged obliquely; The exhaust part includes a fan mounting plate, a partition plate and an exhaust sound insulation plate, wherein: The exhaust sound insulation board is relatively tightly fitted with the fan mounting plate, the interlayer plate is sandwiched between the fan mounting plate and the exhaust sound insulation board, a noise exhaust cavity is formed between the fan mounting plate and the interlayer plate, and a buffer cavity is formed between the exhaust sound insulation board and the interlayer plate; The fan mounting plate is closely connected to the rear side of the main housing and is provided with an air inlet for mounting the fan. A fan sound insulation cover is closely connected to the air inlet. One end of the fan sound insulation cover shields the fan, and the other end extends into the buffer cavity and is provided with an array of through holes. The exhaust sound insulation board is provided with an exhaust port, an exhaust sound insulation cover is closely connected to the exhaust port, and the exhaust sound insulation cover extends into the noise exhaust cavity at one end opposite to the exhaust port and is provided with a perforated array; The partition plate is provided with a through hole for the fan sound insulation cover and the exhaust sound insulation cover to pass through in close contact, and is also provided with a backflow hole for communicating the buffer cavity with the noise exhaust cavity.

2. The noise reduction structure of the whole machine with a silent cover according to claim 1 is characterized in that: Sound absorbing material is provided on the inner wall of the fan mounting plate and / or the exhaust sound insulation plate and / or the fan sound insulation cover and / or the exhaust sound insulation cover.

3. The noise reduction structure of the whole machine with a silent cover according to claim 1 is characterized in that: An air grille is provided on the return flow hole and / or the air outlet.

4. The noise reduction structure of the whole machine with a silent cover according to claim 1, characterized in that: The bottom plate is covered with a shock-absorbing pad, and instruments can be placed on the shock-absorbing pad.

5. The noise reduction structure of the whole machine with a silent cover according to claim 1 is characterized in that: The inner sides of the top plate and the side plates are covered with sound-absorbing materials.

6. The noise reduction structure of the whole machine with a silent cover according to claim 1, 2 or 5, characterized in that: The sound-absorbing material is sound-insulating cotton.

7. The noise reduction structure of the whole machine with a silent cover according to claim 1, characterized in that: The bottom plate is inserted between the air intake sound insulation box and the air intake guide box, and is provided with ventilation openings corresponding to the air intake holes of the air intake sound insulation box.

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