A generator silent box

Abstract

The present application relates to a generator silent box, belonging to the technical field of noise reduction technology, and includes a cabinet body and a noise reduction window; the cabinet body is a carrier for storing machine equipment; the noise reduction window is installed on the cabinet body; the noise reduction window includes a sound insulation frame, a first sound absorption board, and a heat dissipation pipe fitting; the sound insulation frame is installed on one wall surface of the cabinet body, and the sound insulation frame is communicated with the cabinet body; the first sound absorption board is uniformly installed in the sound insulation frame, and a number of sound absorption holes are uniformly formed in the first sound absorption board. The present application has the effect of providing a balance and compatibility between noise reduction and heat dissipation in the silent box.

Description

Technical Field

[0001] This application relates to the technical field of noise reduction, and particularly to a generator silent box. Background Art

[0002] During the operation of some high-pressure equipment such as engines and air compressors, harsh noises will be generated. The common solution is to install these devices in a separate soundproof room to shield and purify the noises generated by these devices. However, the separate soundproof room occupies a large space and is relatively fixed in position and difficult to move. Therefore, a silent cabinet or a silent box can be used to provide protection and noise reduction for the equipment.

[0003] For the currently commonly used silent cabinets, when the heat dissipation is good, the noise reduction effect is not good. While the silent cabinet with good noise reduction effect has strong sealing performance and good noise shielding effect, but the heat dissipation is poor. Machine equipment such as engines and air compressors have relatively high requirements for heat dissipation. The silent cabinet with poor heat dissipation is likely to cause insufficient heat dissipation during the operation of the equipment, which affects the service life.

[0004] Regarding the above related technologies, the inventor believes that there are defects in the incompatibility between noise reduction and heat dissipation. Summary of the Invention

[0005] In order to improve the problem of the incompatibility between noise reduction and heat dissipation, this application provides a generator silent box.

[0006] The generator silent box provided by this application adopts the following technical solutions:

[0007] A generator silent box includes a cabinet body and a noise reduction window; the cabinet body is a carrier for storing machine equipment; the noise reduction window is installed on the cabinet body;

[0008] The noise reduction window includes a sound insulation frame, a first sound absorption board, and heat dissipation pipe fittings; the sound insulation frame is installed on a wall surface of the cabinet body, and the sound insulation frame is communicated with the cabinet body; the first sound absorption board is evenly installed in the sound insulation frame, and a number of sound absorption holes are evenly opened on the first sound absorption board; the heat dissipation pipe fittings are installed on another wall surface of the cabinet body, and the heat dissipation pipe fittings are communicated with the sound insulation frame, and heat dissipation holes are evenly opened on the heat dissipation pipe fittings.

[0009] By adopting the above technical solutions, the machine equipment is placed in the cabinet body, and ventilation, heat dissipation and noise reduction are provided through the noise reduction window. A sound insulation frame and a first sound absorption board are arranged in the noise reduction window. The sound insulation frame is used to install the first sound absorption board. Through the sound absorption holes arranged on the first sound absorption board, the first sound absorption board forms a porous structure. Part of the sound energy is converted into heat energy by friction in the pores of the porous structure and dissipated in cooperation with the heat dissipation pipe fittings, providing a noise reduction effect. And the sound insulation frame and the heat dissipation pipe fittings are in a communicated state. Therefore, the gas after noise reduction flows to the heat dissipation pipe fittings, and after entering the heat dissipation pipe fittings, it absorbs heat through the surface of the heat dissipation pipe fittings and dissipates heat through the air flow of the heat dissipation holes, so as to play the role of noise reduction and heat dissipation of the air-borne sound.

[0010] Preferably, the heat dissipation pipe is made of heat-absorbing material and extends along the cabinet wall surface.

[0011] By adopting the above technical solution, the installation area of the heat dissipation pipe extends along the cabinet wall surface. After the extension, the heat dissipation area of the heat dissipation pipe increases with the extended length. Therefore, through the heat-absorbing material of the heat dissipation pipe, the heat in the noise-reduced air is absorbed, and the heat is continuously diffused to the entire heat dissipation pipe through the extended heat dissipation pipe. The extension of the heat dissipation pipe increases the heat dissipation area and improves the heat dissipation efficiency.

[0012] Preferably, a negative pressure mechanism is installed on the heat dissipation pipe.

[0013] By adopting the above technical solution, the negative pressure mechanism creates a negative pressure inside the cabinet, extracts the air mixed with heat inside the cabinet through the noise reduction window, increases the heat dissipation effect, and ensures that the heat generated by the machine equipment inside the cabinet is fully discharged.

[0014] Preferably, a sound-absorbing frame is installed inside the heat dissipation pipe, and the sound-absorbing frame has a porous structure.

[0015] By adopting the above technical solution, the sound-absorbing frame arranged inside the heat dissipation pipe can further reduce the small amount of noise generated by incomplete noise reduction between the sound insulation frame and the first sound-absorbing board, and increase the noise reduction amount while providing heat dissipation.

[0016] Preferably, a filter screen is also installed on the sound insulation frame, and the filter screen is detachably connected to the sound insulation frame.

[0017] By adopting the above technical solution, when the machine equipment inside the cabinet is operating, it will use liquids such as engine oil, diesel oil or lubricating oil. These liquids will emit pungent odors during the operation of the machine equipment. Through the suction effect of the negative pressure mechanism, these pungent odors will be discharged with the air, affecting the external environment. Therefore, a filter screen is set to filter these pungent odors, and the detachable connection enables the filter screen that can be used for a long time to be replaced.

[0018] Preferably, the sound insulation frame is a rhombic prism, and each first sound-absorbing board is arranged at different inclined angles.

[0019] By adopting the above technical solution, by setting the sound insulation frame as a rhombic prism, the inner wall surface of the sound insulation frame is continuously changed, and the first sound-absorbing board is arranged at different inclined angles, so that the sound energy entering the sound insulation frame is attenuated or reflected, thereby further improving the noise reduction effect.

[0020] Preferably, an air inlet window is installed on the cabinet, and a second sound-absorbing board is arranged inside the air inlet window.

[0021] By adopting the above technical solution, an air inlet window is provided on the cabinet body to enable gas exchange inside the cabinet and supply fresh air. At the same time, the second sound-absorbing panel provided in the air inlet window and the first sound-absorbing panel in the sound insulation frame are the same sound-absorbing panel, so that the air inlet window can also provide a noise reduction effect and ensure that the setting of the air inlet window will not have an impact on noise reduction.

[0022] Preferably, a separation net is installed on the air inlet window.

[0023] By adopting the above technical solution, when fresh air enters the cabinet through the air inlet window, there are sundries such as dust and flying insects in the environment outside the cabinet. The separation net can block these sundries, maintain the cleanliness inside the cabinet, and reduce the occurrence of the situation where the heat dissipation effect decreases due to dust covering the machine equipment. At the same time, when the air inlet window is damaged, the separation net can prevent external personnel from entering the cabinet and damaging the machine equipment.

[0024] Preferably, a sound-insulating panel is installed on the inner wall of the cabinet.

[0025] By adopting the above technical solution, since the sound energy of noise is conducted in all directions with the air, some sound energy will still directly penetrate the cabinet wall and be transmitted to the outside. After the sound-insulating panel is set, the sound is blocked by the sound-insulating panel, but the sound-insulating panel only provides a sound insulation effect. Therefore, the heat dissipation function still needs to be applied to the heat dissipation pipe fittings in the noise reduction window.

[0026] Preferably, a closing door is installed on the cabinet body, and a temperature sensor and an alarm are installed on the closing door.

[0027] By adopting the above technical solution, the machine equipment is installed or maintained through the opening and closing of the closing door. At the same time, a temperature sensor is provided inside the closing door to detect the temperature inside the cabinet. When the temperature is higher or lower than the specified temperature, a warning is generated through the alarm to reduce the situation where the heat dissipation pipe fittings in the noise reduction window are blocked.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The sound energy is absorbed by the sound insulation frame and the first sound-absorbing panel of the noise reduction window to reduce noise. At the same time, it penetrates the heat dissipation pipe fittings with the air, and the heat dissipation pipe fittings discharge the hot air contained in the cabinet to achieve the effect of both noise reduction and ensuring heat dissipation.

[0030] 2. The heat in the air is absorbed by the heat dissipation pipe fittings, and the negative pressure mechanism is used to increase the air flow speed inside the cabinet to accelerate the heat emission and absorption. The heat dissipation pipe fittings extend along the outer wall of the cabinet to increase the heat dissipation area and improve the heat dissipation effect. An acoustic frame and an acoustic panel are provided to further improve the noise reduction effect.

[0031] 3. By means of the irregular inner wall of the sound insulation frame cooperating with the first sound absorption plates with different inclination angles, the sound energy entering the sound insulation frame can be attenuated or reflected, providing a resistance-type noise reduction effect and improving the noise reduction intensity.

[0032] 4. By providing an air inlet window, the fresh air exchange rate of the cabinet can be increased, ensuring the air circulation inside the cabinet and enhancing the heat dissipation effect.

[0033] 5. By setting up the cooperation of the temperature sensor and the alarm, the temperature detection inside the cabinet can be provided in real time, avoiding damage to the machine equipment caused by excessive heat inside the cabinet, and at the same time providing a warning to repair and replace parts such as the noise reduction window in a timely manner. Description of the Drawings

[0034] Figure 1 It is a three-dimensional structural schematic diagram of the cabinet in the embodiment of the present application;

[0035] Figure 2 It is a three-dimensional structural diagram of the sound insulation frame in the embodiment of the present application;

[0036] Figure 3 It is Figure 2 The cross-sectional structural schematic diagram of part A-A in

[0037] Figure 4 It is a three-dimensional structural diagram of the heat dissipation pipe fitting in the embodiment of the present application;

[0038] Figure 5 It is a three-dimensional structural diagram of the negative pressure mechanism in the embodiment of the present application;

[0039] Figure 6 It is Figure 4 The cross-sectional structural schematic diagram of part B-B in

[0040] Figure 7 It is an exploded structural schematic diagram of the air inlet window in the embodiment of the present application;

[0041] The reference signs in the drawings are: 1. Cabinet, 2. Noise reduction window, 21. Sound insulation frame, 22. First sound absorption plate, 23. Sound absorption hole, 24. Heat dissipation pipe fitting, 25. Heat dissipation hole, 26. Negative pressure mechanism, 27. Sound absorption frame, 28. Filter screen, 3. Air inlet window, 4. Second sound absorption plate, 5. Partition net, 6. Sound insulation board, 7. Closing door, 8. Temperature sensor, 9. Alarm. Detailed Description of the Embodiment

[0042] The following is a further detailed description of the present application in conjunction with the attached Figure 1 - attached Figure 7 :

[0043] Embodiment 1

[0044] The embodiment of the present application discloses a generator silent box. Refer to Figure 1and Figure 2 As shown in Figure 2 , a static sound box for a generator includes a cabinet body 1 and a noise reduction window 2. The cabinet body 1 is a carrier for storing machine equipment. The noise reduction window 2 is installed on the cabinet body 1. The cabinet body 1 is in the shape of a prism, such as a quadrangular prism, a pentagonal prism, etc. The noise reduction window 2 is arranged through multiple walls to provide a multi-directional noise reduction effect. The noise reduction window 2 can be installed on the surface of the cabinet body 1 by means of snap connection or bolt connection, etc., so as to facilitate disassembly, maintenance, cleaning or replacement.

[0045] The noise reduction window 2 includes a sound insulation frame 21, a first sound absorption board 22, and a heat dissipation pipe fitting 24. The sound insulation frame 21 is installed on one wall of the cabinet body 1, usually on the inner wall of the cabinet body 1, or a separate installation space can be set inside the cabinet body 1. The sound insulation frame 21 is communicated with the cabinet body 1, and the communication method can be to set multiple holes for communication, or a separate large-size hole for communication, and this embodiment is applicable. The first sound absorption board 22 is evenly installed in the sound insulation frame 21, and a number of sound absorption holes 23 are evenly opened on the first sound absorption board 22. The first sound absorption board 22 can be made of sound absorption materials, such as plywood, hard fiber board, etc. The first sound absorption board 22 and a large number of sound absorption holes 23 form a porous structure. The porous structure can convert part of the sound energy into heat energy by friction in the pores of the porous structure and dissipate it in cooperation with the heat dissipation pipe fitting 24 to provide a noise reduction effect. The heat dissipation pipe fitting 24 is installed on another wall of the cabinet body 1, usually the outer wall of the cabinet body 1. The heat dissipation pipe fitting 24 is communicated with the sound insulation frame 21. After the sound insulation frame 21 is communicated with the cabinet body 1, the heat dissipation pipe fitting 24 is correspondingly arranged on the other side. Therefore, the heat dissipation pipe fitting 24 is communicated with the sound insulation frame 21 in this way. A number of heat dissipation holes 25 are evenly opened on the heat dissipation pipe fitting 24. The function of the heat dissipation holes 25 is to discharge the hot air with heat transferred from the inside of the sound insulation frame 21.

[0046] Refer to Figure 1 , a sound insulation board 6 is installed on the inner wall of the cabinet body 1. The sound insulation board 6 is made of sound absorption materials, which can be asbestos board, perforated board, or composite board used by overlapping each other. Since the machine equipment generates noise and the sound energy of the noise is conducted in all directions with the air, some sound energy will still directly penetrate through the wall surface of the cabinet body 1 and be transmitted to the outside. Therefore, the sound is blocked by the sound insulation board 6. However, the sound insulation board 6 only provides sound insulation effect, so the heat dissipation function still needs to be applied to the heat dissipation pipe fitting 24.

[0047] The implementation principle of Embodiment 1 of this application is as follows: Install the machine equipment to be installed into the cabinet 1. When the machine equipment operates, it will generate noise and heat. Therefore, when the sound energy of the noise generated by the machine equipment is transmitted to the noise reduction window 2, the first sound absorption board 22 in the noise reduction window 2 is made of sound absorption material. The first sound absorption board 22 and a large number of sound absorption holes 23 form a porous structure. The porous structure can convert part of the sound energy into heat energy by friction in the pores of the porous structure and dissipate it in cooperation with the heat dissipation pipe 24, providing a resistive noise reduction effect, reducing the noise generated by the machine equipment, and avoiding excessive noise outside the cabinet 1. However, the heat inside the cabinet 1 is difficult to discharge. Sound energy is transmitted through air as a medium. Therefore, after the air inside the cabinet 1 comes into contact with the noise and heat, the first sound absorption board 22 is used to reduce the noise of the air. The noise-reduced air continues to transmit outward, enabling the heat dissipation pipe 24 outside the cabinet 1 to come into contact with the heat. The heat exchanges heat with the outside air through the heat dissipation pipe 24 and the heat dissipation holes 25, thereby discharging the heat to avoid the difficulty in dealing with the heat inside the cabinet 1. When the machine equipment located inside the cabinet 1 operates to generate heat and noise, the sound energy of the noise is conducted in all directions with the air. Some sound energy will still directly penetrate the wall surface of the cabinet 1 and be transmitted to the outside. The sound insulation board 6 can block the sound inside the cabinet 1, while other sound energy is reduced in noise through the noise reduction window 2.

[0048] Embodiment 2

[0049] Referring to Figure 1 , the difference between this embodiment and Embodiment 1 is that a closing door 7 is installed on the cabinet 1, and a temperature sensor 8 and an alarm 9 are installed on the closing door 7; the temperature sensor 8 is fixedly connected to a wall surface of the closing door 7 close to the cabinet 1, and the alarm 9 is fixedly connected to a wall surface of the closing door 7 far from the cabinet 1, and the alarm 9 is data-connected to the temperature sensor 8. The alarm 9 can adopt audio alarm or warning by means of light flashing, etc. The corresponding structures of this embodiment and Embodiment 1 are the same and will not be elaborated here.

[0050] The implementation principle of Embodiment 2 of this application is as follows: When the heat generated by the machine equipment inside the cabinet 1 cannot be discharged through the heat dissipation pipe 24 and the heat dissipation holes 25, part of the reason is that the heat dissipation holes 25 of the heat dissipation pipe 24 are blocked or most of the sound absorption holes 23 of the first sound absorption board 22 are blocked by dust and other sundries, resulting in the difficulty of fully discharging the heat generated by the machine equipment, but the workers cannot be reminded of these situations. Therefore, a temperature sensor 8 is set. After the closing door 7 is closed, the sensing end of the temperature sensor 8 is located inside the cabinet 1. When the heat inside the cabinet 1 cannot be fully discharged, the temperature sensor 8 senses that the temperature inside the cabinet 1 has risen, and thus sends an electrical signal to the alarm 9, and the alarm 9 gives a warning to remind the surrounding workers to clean and repair parts such as the heat dissipation pipe 24 and the heat dissipation holes 25.

[0051] Embodiment 3

[0052] Reference Figure 2 and Figure 3 In this embodiment, the difference from Embodiment 1 is that the sound insulation frame 21 is a rhombic prism, and each first sound absorption plate 22 is arranged at different inclination angles; the sound insulation frame 21 is arranged as a rhombic prism, which can be a quadrangular prism, a pentagonal prism, a wedge prism, etc. In this embodiment, a wedge prism is adopted. The function of adopting a wedge prism is that the inner wall surface of the sound insulation frame 21 is a wedge surface. Therefore, the wedge surface will change continuously with the inclination angle, and the first sound absorption plates 22 are arranged at different inclination angles, so that the sound energy entering the sound insulation frame 21 can be attenuated or reflected, providing a resistance-type noise reduction effect. Combining with the porous structure of the first sound absorption plates 22, the resistance-type and resistance-type noise reduction are combined to form a composite noise reduction effect, which can improve the noise reduction intensity.

[0053] Reference Figure 2 and Figure 3 A filter screen 28 is also installed on the sound insulation frame 21, and the filter screen 28 is detachably connected to the sound insulation frame 21. The detachable method can be a method of clamping with a clamping block, or a method of socket connection, etc. The filter screen 28 can adopt an activated carbon net or other mesh covers with the function of filtering gas. When the machine equipment in the cabinet 1 is operating, the oil on the machine equipment volatilizes to produce a pungent smell. Through the suction of the negative pressure mechanism 26, these pungent smells will be discharged with the air, affecting the external environment. The filter screen 28 is used to filter these pungent smells. After the filter screen 28 is used for a long time, the filtering effect will decrease. Therefore, the detachable method can facilitate the replacement and maintenance of the filter screen 28. The corresponding structures of this embodiment are the same as those of Embodiment 1 and will not be described in detail here.

[0054] The implementation principle of Embodiment 3 of this application is: when the sound energy of the noise generated by the machine equipment enters the sound insulation frame 21, by setting the sound insulation frame 21 as an irregular rhombic prism and cooperating with the first sound absorption plates 22 with different inclination angles, the sound energy entering the sound insulation frame 21 can be attenuated or reflected to a certain extent after contacting the surface of the sound insulation frame 21 or the first sound absorption plates 22, which can further improve the noise reduction effect. The heat energy is dissipated through the heat dissipation pipe fittings 24. At the same time, the heat will volatilize lubricating oils such as the oil used by the machine equipment, resulting in a pungent smell in the cabinet 1. After the negative pressure mechanism 26 makes the inside of the cabinet 1 form a negative pressure, the smell is discharged with the heat dissipation pipe fittings 24, affecting the external environment. The filter screen 28 can filter the pungent smell to ensure the freshness of the air.

[0055] Embodiment 4

[0056] Reference Figure 3 and Figure 4The difference between this embodiment and the first embodiment is that the heat dissipation pipe 24 is made of heat absorbing material, and the heat dissipation pipe 24 extends along the wall of the cabinet 1. The material of the heat dissipation pipe 24 can be set to a metal material, such as stainless steel, aluminum and other materials with strong thermal conductivity, so that the heat generated by the machine equipment in the cabinet 1 during operation enters the heat dissipation pipe 24 through the noise reduction window 2. The heat absorbing material of the heat dissipation pipe 24 can absorb the heat, and the incompletely absorbed heat can be discharged with the air through the heat dissipation hole 25, so as to improve the heat dissipation efficiency and ensure the normal heat dissipation of the machine equipment in the cabinet 1.

[0057] Reference Figure 4 and Figure 5 A negative pressure mechanism 26 is installed on the heat dissipation pipe 24. The installation position of the negative pressure mechanism 26 can be located inside the heat dissipation pipe 24, or outside the heat dissipation pipe 24. In this embodiment, it is arranged in the heat dissipation pipe 24. The negative pressure mechanism 26 can be set as a motor, a fan combination, or other related driving equipment. In this embodiment, a motor and a fan combination are adopted. The motor is fixed to the inner wall of the heat dissipation pipe 24, and the fan is connected to the output end of the motor by transmission. When the motor is running, it drives the fan to run at a high speed. The high-speed rotating fan produces airflow changes, so that the air in the cabinet 1 is drawn out from the noise reduction window 2, and negative pressure is formed in the cabinet 1, which is convenient for fresh air exchange.

[0058] Reference Figure 6 A sound absorbing frame 27 is installed in the heat dissipation pipe 24, and the sound absorbing frame 27 is a porous structure; the function of the sound absorbing frame 27 in the heat dissipation pipe 24 is consistent with the function of the first sound absorbing board 22 in the sound insulation frame 21. The sound absorbing frame 27 and the first sound absorbing board 22 have the same material and sound absorbing holes 23, so the sound absorbing frame 27 can also absorb and transform sound energy. The main function of setting the sound absorbing frame 27 is that there will still be some noise after the noise reduction in the sound insulation frame 21. The sound absorbing frame 27 can further reduce the small amount of noise generated by incomplete noise reduction between the sound insulation frame 21 and the sound absorbing board, and increase the noise reduction while providing heat dissipation. The corresponding structure of this embodiment is the same as that of embodiment 1, and will not be repeated here.

[0059] The implementation principle of Embodiment 4 of this application is as follows: After the heat dissipation pipe 24 is made of heat-absorbing materials such as metal, the heat generated in the cabinet 1 enters the heat dissipation pipe 24 through the sound insulation frame 21 and the sound absorption board. At the same time, the negative pressure mechanism 26 creates a negative pressure in the cabinet 1, so that the heat in the cabinet 1 is drawn into the heat dissipation pipe 24 along with the air. The heat contacts the heat dissipation pipe 24 and conducts heat exchange. The negative pressure mechanism 26 can improve the absorption and emission of heat, maintaining the temperature in the cabinet 1 stable. After the heat dissipation pipe 24 absorbs heat, the air that has lost some heat is discharged through the heat dissipation holes 25. The heat dissipation pipe 24 is installed along the outer surface of the cabinet 1, increasing the overall area of the heat dissipation pipe 24. The increase in the area of the heat dissipation pipe 24 can expand the heat dissipation area. After the heat dissipation pipe 24 absorbs heat at the position corresponding to the sound insulation frame 21, the heat quickly diffuses to the entire heat dissipation pipe 24 along with the air from the absorption point. As the area of the heat dissipation pipe 24 expands, the heat dissipation area expands, and the heat dissipation effect is enhanced, so that the cabinet 1 can ensure both the noise reduction effect and the heat dissipation effect.

[0060] Embodiment 5

[0061] Figure 7 , the difference between this embodiment and Embodiment 1 is that an air inlet window 3 is installed on the cabinet 1, and a second sound absorption board 4 is installed in the air inlet window 3; the air inlet window 3 can be a window body with gaps such as a shutter window or a grille. In this embodiment, a shutter window is used. The shutter window can adjust the gap between the window leaves. The larger the gap, the better the ventilation effect, but the relative sound insulation effect will be reduced. Therefore, when using a shutter window as the air inlet window 3, the gap between the window leaves needs to be adjusted appropriately. The air inlet window 3 can provide gas exchange in the cabinet 1, that is, after a negative pressure is formed in the cabinet 1 through the negative pressure mechanism 26, the air with heat is discharged through the heat dissipation holes 25 of the heat dissipation pipe 24, and the cabinet 1 needs fresh air to be supplemented. Therefore, the air inlet window 3 can provide fresh air supplementation. At the same time, a second sound absorption board 4 made of the same material as the first sound absorption board 22 of the sound insulation frame 21 is arranged in the air inlet window 3, so that the air inlet window 3 can also provide a noise reduction effect. At the same time, the air inlet window 3 is the input port for fresh air to enter. After the machine equipment generates noise, it spreads through the air, and the spreading air converges to the noise reduction window 2 through the negative pressure mechanism 26. The noise reduction window 2 is the exhaust port. Therefore, the propagation path of the noise takes precedence over the direction of air propagation. Therefore, the noise at the position of the air inlet window 3 will be lower than that of the noise reduction window 2. The second sound absorption board 4 arranged in cooperation can ensure that the setting of the air inlet window 3 will not affect the noise reduction.

[0062] Refer to Figure 7, an air inlet window 3 is installed with a partition net 5. The partition net 5 can adopt filtering tools such as a nylon filter net 28. The air inlet window 3 is the air inlet of the cabinet body 1. When fresh air enters the cabinet body 1 through the air inlet window 3, there are various sundries such as dust and flying insects in the external environment of the cabinet body 1. These sundries can be blocked by the partition net 5 while not affecting the entry of fresh air, maintaining the cleanliness inside the cabinet body 1, and reducing the occurrence of the situation where the heat dissipation effect decreases due to dust covering the machine equipment. At the same time, when the air inlet window 3 is damaged, the fixed partition net 5 can prevent external personnel from entering the cabinet body 1 through the damaged air inlet window 3 to damage the machine equipment or perform dangerous behaviors such as stealing the machine equipment. The corresponding structure of this embodiment is the same as that of Embodiment 1 and will not be elaborated here.

[0063] The implementation principle of Embodiment 5 of this application is as follows: After the gas with heat energy is discharged by forming a negative pressure inside the cabinet body 1, the cabinet body 1 needs fresh air to supplement. By setting the air inlet window 3, fresh air outside the cabinet body 1 can enter. When the fresh air enters, the second sound-absorbing board 4 can prevent noise from being transmitted out through the air inlet window 3. Since the propagation path of noise takes precedence over the direction of air propagation, the noise at the position of the air inlet window 3 will be lower than that of the noise reduction window 2. With the cooperation of the second sound-absorbing board 4 provided, it can be ensured that the setting of the air inlet window 3 will not have an impact on noise reduction. A partition net 5 is set on the air inlet window 3 to prevent sundries from entering the cabinet body 1 through the air inlet window 3. At the same time, when the air inlet window 3 is damaged, it can prevent external personnel from entering the cabinet body 1 through the damaged air inlet window 3 to damage the machine equipment or perform dangerous behaviors such as stealing the machine equipment.

[0064] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A generator silent box, characterized in that, It includes a cabinet body (1) and a noise reduction window (2); the cabinet body (1) is a carrier for storing machine tools; the noise reduction window (2) is installed on the cabinet body (1); The noise reduction window (2) includes a sound insulation frame (21), a first sound absorption board (22), and a heat dissipation pipe fitting (24); the sound insulation frame (21) is installed on a wall surface of the cabinet body (1), and the sound insulation frame (21) is communicated with the cabinet body (1); the first sound absorption board (22) is evenly installed in the sound insulation frame (21), and a number of sound absorption holes (23) are evenly formed on the first sound absorption board (22); the heat dissipation pipe fitting (24) is installed on another wall surface of the cabinet body (1), and the heat dissipation pipe fitting (24) is communicated with the sound insulation frame (21), and heat dissipation holes (25) are evenly formed on the heat dissipation pipe fitting (24); the heat dissipation pipe fitting (24) is a heat-absorbing material, and the heat dissipation pipe fitting (24) extends along the wall surface of the cabinet body (1); a negative pressure mechanism (26) is installed on the heat dissipation pipe fitting (24); a sound insulation frame (27) is installed in the heat dissipation pipe fitting (24), and the sound insulation frame (27) is a porous structure; an air inlet window (3) is installed on the cabinet body (1), and a second sound absorption board (4) is arranged in the air inlet window (3); The air inlet window (3) can provide the supplement of fresh air and provide noise reduction through the second sound absorption board (4). The negative pressure mechanism (26) forms a negative pressure in the cabinet body (1), so that heat exchange is carried out between heat and fresh air, and heat and noise are transmitted to the noise reduction window (2) through the flowing air under the influence of negative pressure; the first sound absorption board (22) and a large number of sound absorption holes (23) form a porous structure, and the porous structure can convert part of the sound energy into heat energy by friction in the pores of the porous structure and dissipate it in cooperation with the heat dissipation pipe fitting (24) to provide a noise reduction effect; there will still be some noise after noise reduction in the sound insulation frame (21), and the sound insulation frame (27) can further reduce a small amount of noise generated by incomplete noise reduction between the sound insulation frame (21) and the sound absorption board, and increase the noise reduction amount while providing heat dissipation; at the same time, the extended installed heat dissipation pipe fitting (24) can expand the heat dissipation area. After the heat dissipation pipe fitting (24) absorbs heat under negative pressure through the sound insulation frame (21), the heat quickly diffuses from the absorption place to the whole heat dissipation pipe fitting (24) along with the air. As the area of the heat dissipation pipe fitting (24) expands, the heat dissipation area expands, so that the cabinet body (1) can ensure the heat dissipation effect while ensuring the noise reduction effect.

2. A generator silent box according to claim 1, characterized in that, A filter screen (28) is further installed on the sound insulation frame (21), and the filter screen (28) is detachably connected to the sound insulation frame (21).

3. A generator silent box according to claim 1, characterized in that, The sound insulation frame (21) is a rhombic prism, and the inclination angles of different first sound absorption boards (22) are different.

4. A generator silent box according to claim 1, characterized in that, A partition net (5) is installed on the air inlet window (3).

5. A generator silent box according to claim 1, characterized in that, A sound insulation board (6) is installed on the inner wall of the cabinet body (1).

6. A generator silent box according to claim 1, characterized in that A closing door (7) is installed on the cabinet body (1), and a temperature sensor (8) and an alarm (9) are installed on the closing door (7).

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