Noise reduction air bellow and generator set

Abstract

The utility model relates to the technical field of generators, in particular to a noise reduction air bellow and a generator set. The noise reduction air box comprises a box body and at least two filter grids, the box body is provided with an air inlet and an air outlet, and the air inlet and the air outlet are both communicated with a cavity of the box body; the two filter grids are respectively arranged at the air inlet and the air outlet; the edge of the air inlet is provided with an arc guide face used for guiding outside air to enter the cavity. The noise reduction air bellow can improve the noise reduction effect and the heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, and more specifically, to a noise-reducing air box and generator set. Background Technology

[0002] A silent generator set is an integrated power generation device, whose structure mainly includes a common chassis, a noise-reducing enclosure, and auxiliary systems. Considering that the generator set needs to circulate heat dissipation and cooling during operation, the surface of the noise-reducing enclosure is usually equipped with a flat mesh or louvered air inlet to meet the ventilation and heat dissipation requirements of the equipment during daily operation.

[0003] However, existing technologies suffer from poor noise reduction capabilities. Utility Model Content

[0004] The purpose of this invention is to provide a noise-reducing air box and a generator set that can improve the noise reduction effect.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides a noise-reducing air box, comprising:

[0007] The enclosure is equipped with an air inlet and an air outlet, both of which are connected to the chamber of the enclosure.

[0008] At least two filter meshes are provided, one at the air inlet and one at the air outlet.

[0009] The air inlet has an arc-shaped guide surface at its edge to guide outside air into the chamber.

[0010] In an optional embodiment, the arc guide surface includes an arc-shaped portion and a mounting portion. The mounting portion is close to the chamber and connected to the arc-shaped portion. The arc-shaped portion extends from the mounting portion toward the outside and is used to guide outside air to move to the mounting portion.

[0011] The filter mesh is installed at the air inlet and connected to the mounting section.

[0012] In an optional embodiment, a first guide slope is provided at the end of the housing near the air inlet, the first guide slope being used to guide the outside air to flow toward the arc guide surface.

[0013] In an optional embodiment, a second guide ramp is provided at the end of the housing near the air outlet; the second guide ramp is used to guide the gas from the chamber to the outside.

[0014] In an optional embodiment, the noise reduction air box further includes a first intermediate partition and a second intermediate partition; both the first intermediate partition and the second intermediate partition are disposed within the cavity and are connected to the inner wall of the box body.

[0015] The first and second intermediate partitions are used to divide the chamber into a control chamber, a power chamber, and an exhaust chamber that are connected in sequence; the control chamber is connected to the air inlet, and the exhaust chamber is connected to the air outlet.

[0016] In an optional embodiment, the noise reduction air box further includes a silencer, which is disposed in the power chamber and close to the air inlet; the silencer is connected to the inner wall of the box.

[0017] The muffler is spaced apart from the first intermediate partition.

[0018] In an optional embodiment, the second intermediate partition is connected to the side wall where the air outlet is located; the second intermediate partition is used to prevent air from entering the power chamber through the air outlet.

[0019] Secondly, this utility model provides a generator set, including: a base, a power component, and the aforementioned noise reduction air box; the noise reduction air box cover is fitted onto the base and connected to the base;

[0020] The power unit is connected to the base; the housing has an opening through which the power unit enters the chamber.

[0021] In an optional embodiment, the noise reduction air box includes at least two second intermediate partitions, which are spaced apart and connected to the inner wall of the box body.

[0022] The power unit includes a fan positioned at the gap between the two second intermediate partitions.

[0023] In an optional embodiment, the power assembly includes a controller, an engine, and an exhaust fan, with the controller located in a control chamber, the engine located in a power chamber, and the exhaust fan located in an exhaust chamber.

[0024] The controller, engine, and exhaust fan are all connected to the base.

[0025] The beneficial effects of the noise-reducing air box and generator set provided in this embodiment of the invention include:

[0026] The noise reduction air box in this embodiment includes a housing and a filter mesh. The housing is provided with an air inlet and an air outlet that connect the chambers, allowing outside air to flow in through the air inlet to dissipate heat from the power components inside the chamber. Subsequently, the heat-exchanged hot air flows out through the air outlet, thus achieving continuous heat dissipation and improving heat dissipation efficiency. The filter mesh is installed at the air inlet to prevent large impurities from entering the chamber and damaging the power components inside.

[0027] The air inlet has a rounded guide surface at its edge, which guides outside air to flow towards the inlet, thus promoting airflow and ensuring sufficient air volume while reducing the number or area of ​​air inlets. Furthermore, the reduced number or size of air inlets also reduces noise, thereby improving noise reduction. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the noise reduction air box provided in this embodiment;

[0030] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0031] Figure 3 This embodiment provides a schematic diagram of the gas flow in the noise reduction fan box;

[0032] Figure 4 This is a schematic diagram of the generator set provided in this embodiment;

[0033] Figure 5 This is a structural diagram of the noise reduction air box, the first intermediate partition, the second intermediate partition, and the silencer provided in this embodiment.

[0034] Figure 6 This is a schematic diagram of the power assembly provided in this embodiment;

[0035] Figure 7 This is a schematic diagram of the structure of the first intermediate partition and the silencer provided in this embodiment;

[0036] Figure 8 This is a schematic diagram of the second intermediate partition and the fan provided in this embodiment.

[0037] Icons: 100-Noise Reduction Air Box; 110-Box Body; 111-Air Inlet; 112-Air Outlet; 113-Circular Arc Guide Surface; 1131-Arc Section; 1132-Mounting Section; 114-First Guide Inclined Surface; 115-Second Guide Inclined Surface; 120-Filter Grid; 130-First Intermediate Partition; 140-Second Intermediate Partition; 150-Silencer; 101-Cavity; 102-Control Chamber; 103-Power Chamber; 104-Exhaust Chamber; 200-Generator Set; 210-Base; 220-Power Component; 221-Fan; 222-Controller; 223-Engine; 224-Exhaust Fan. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0043] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0044] Please refer to Figures 1-5 This embodiment provides a generator set 200, which includes a base 210, a power component 220, and a noise-reducing air box 100. The noise-reducing air box 100 is fitted onto the base 210, and both the noise-reducing air box 100 and the power component 220 are connected to the base 210. In this embodiment, the noise-reducing air box 100 has a housing 110 and a filter mesh 120. The housing 110 is provided with a chamber 101 and an opening. During the closing process, the power component 220 can enter the chamber 101 through the opening, thereby allowing the power component 220 to be housed within the chamber 101.

[0045] The housing 110 is also provided with an air inlet 111 and an air outlet 112, both of which are connected to the chamber 101; allowing outside air to enter the chamber 101 through the air inlet 111, thereby dissipating heat from the power component 220 inside the chamber 101; the hot air after heat exchange with the power component 220 is discharged through the air outlet 112.

[0046] Both the air inlet 111 and the air outlet 112 are equipped with filter meshes 120 to prevent large debris from entering the chamber 101 and damaging the power components 220 inside the chamber 101.

[0047] In this embodiment, the edge of the air inlet 111 is provided with an arc guide surface 113. This embodiment can use the arc guide surface 113 to guide the external gas into the chamber 101; thereby facilitating the entry of external gas into the chamber 101 and reducing the wind resistance of the air intake; thus, even with a smaller number of air inlets 111 or a smaller area of ​​the air inlets 111, heat dissipation of the power component 220 can still be guaranteed; thereby reducing noise and improving the noise reduction effect.

[0048] Understandably, for example, the prior art has N air inlets, while this embodiment has M air inlets 111. Since the edges of the air inlets 111 in this embodiment are provided with arc guide surfaces 113, M is less than N when the gas flow rate is the same in the prior art and this embodiment. Since the number of air inlets 111 in this embodiment is less than that in the prior art, the noise leakage generated during the operation of the power component 220 can be effectively reduced, thereby improving the noise reduction effect.

[0049] Similarly, since the edge of the air inlet 111 in this embodiment is provided with an arc guide surface 113, the area of ​​the air inlet 111 in this embodiment can be smaller than that of the prior art when the gas flow rate is the same, thereby effectively reducing the noise leakage generated during the operation of the power component 220 and improving the noise reduction effect.

[0050] Based on the above, the arc-shaped guide surface 113 in this embodiment includes an arc-shaped portion 1131 and a mounting portion 1132. The mounting portion 1132 is connected to the arc-shaped portion 1131 and also to the filter mesh 120. The mounting portion 1132 is close to the chamber 101, while the arc-shaped portion 1131 extends outward from the mounting portion 1132, thereby enabling the arc-shaped portion 1131 to guide outside air to move to the mounting portion 1132, and thus allowing air to enter the chamber 101 from the filter mesh 120 of the mounting portion 1132.

[0051] Understandably, the mounting section 1132 is a straight surface, thereby providing more uniform support and a more stable structure, making the connection between the housing 110 and the filter mesh 120 more stable.

[0052] It should be noted that in this embodiment, air inlets 111 are provided on both opposite sides of the housing 110, and the number of air inlets 111 on each side can be adjusted according to the actual situation to increase the gas flow and improve the heat dissipation efficiency.

[0053] Furthermore, in this embodiment, a first guide slope 114 is provided at the end of the housing 110 near the air inlet 111. The first guide slope 114 is used to guide the outside air to flow towards the arc guide surface 113. Understandably, under the guidance of the first guide slope 114, the outside air can flow along the first guide slope 114 to the arc-shaped portion 1131 of the arc guide surface 113. Subsequently, since the arc-shaped portion 1131 extends outward from the mounting portion 1132, the gas can move from the first guide slope 114 to the mounting portion 1132 under the guidance of the arc-shaped portion 1131. Finally, the gas enters the chamber 101 through the filter mesh 120 at the air inlet 111.

[0054] As described above, a second guide ramp 115 is provided at the end of the housing 110 near the air outlet 112. The second guide ramp 115 is used to guide gas from the chamber 101 to the outside. Understandably, after entering the chamber 101, the gas comes into contact with the power component 220 inside the chamber 101, thereby carrying away the heat from the power component 220 and dissipating heat from it. The gas carrying heat, i.e., hot air, flows to the air outlet 112 and is discharged from there. In this embodiment, by providing the second guide ramp 115, the hot air can flow smoothly to the second guide ramp 115, avoiding hot air backflow and improving heat dissipation efficiency.

[0055] It should be noted that in this embodiment, air inlets 111 are provided on both opposite sides of the housing 110. Therefore, two first guide ramps 114 are also provided to promote airflow, allowing gas to flow quickly through the first guide ramps 114 and the arc guide surface 113, and then enter the chamber 101. This ensures efficient heat dissipation even with a relatively small number of air inlets 111; the reduced number of air inlets 111 also reduces noise, thereby improving noise reduction.

[0056] To ensure the aesthetics of the noise reduction fan box 100, the first guide slope 114 and the second guide slope 115 are symmetrically arranged. Therefore, in this embodiment, there are also two second guide slopes 115.

[0057] Further, please refer to Figures 1-8 In this embodiment, the noise reduction air box 100 also includes a first intermediate partition 130 and a second intermediate partition 140. The first intermediate partition 130 and the second intermediate partition 140 are both located inside the chamber 101 and are connected to the inner wall of the box body 110. Furthermore, since the first intermediate partition 130 and the second intermediate partition 140 are provided inside the chamber 101, the chamber 101 is divided into three parts that are connected in sequence: a control chamber 102, a power chamber 103, and an exhaust chamber 104; wherein, the control chamber 102 is connected to the air inlet 111, and the exhaust chamber 104 is connected to the air outlet 112.

[0058] Understandably, the gas enters the control chamber 102 from the air inlet 111, then flows through the power chamber 103 and the exhaust chamber 104 in sequence, and finally flows out from the air outlet 112.

[0059] It should be noted that the power assembly 220 includes a controller 222, an engine 223, and an exhaust fan 224; the controller 222, engine 223, and exhaust fan 224 are all connected to the base 210. After the housing 110 is closed to the base 210, the controller 222 and engine 223 are separated by the first intermediate partition 130, and the engine 223 and exhaust fan 224 are separated by the second intermediate partition 140, so that the controller 222 is located in the control chamber 102, the engine 223 is located in the power chamber 103, and the exhaust fan 224 is located in the exhaust chamber 104.

[0060] According to the above, in this embodiment, the noise reduction box 100 also includes a muffler 150. The muffler 150 is located in the power cavity 103 and is connected to the inner wall of the box body 110. The power cavity 103 contains an engine 223. The engine 223, as a vibration source, will generate a large amount of noise. Therefore, the muffler 150 is placed in the power cavity 103 to improve the noise reduction effect.

[0061] Furthermore, the silencer 150 is located near the air inlet 111 to reduce noise generated during air intake. It should be noted that since air inlets 111 are provided on both opposite sides of the housing 110, and the silencer 150 is connected to the two side walls on both sides, the contact area between the flowing gas and the silencer 150 is increased, thereby improving the noise reduction effect.

[0062] It should be noted that in this embodiment, the silencer 150 is spaced apart from the first intermediate partition 130, that is, the silencer 150 is close to the top wall of the housing 110, while the first intermediate partition 130 is in contact with the base 210, thereby avoiding the first intermediate partition 130 from blocking the silencer 150, so that the silencer 150 can fully contact the flowing gas, thereby reducing noise and improving the noise reduction effect.

[0063] Understandably, the muffler 150 includes multiple parallel and spaced-apart sound-absorbing plates that reduce noise by absorbing or isolating sound waves.

[0064] Based on the above, the second intermediate partition 140 is located near the air outlet 112 and connected to the side wall where the air outlet 112 is located. It should be noted that after the gas flows through the power chamber 103, it absorbs the heat from the engine 223. Therefore, the gas temperature in the exhaust chamber 104 is relatively high. The high-temperature gas will flow upward. Therefore, the air outlet 112 is located on the top wall of the housing 110 to facilitate the exhaust of hot air; hence, the second intermediate partition 140 is connected to the top wall of the housing 110.

[0065] During the process of hot air being discharged from the air outlet 112, some hot air will flow back. In this embodiment, a second intermediate partition 140 is provided to block the backflow of hot air, thereby preventing the hot air from re-entering the power chamber 103 and improving the heat dissipation effect. That is, the second intermediate partition 140 can block the air from entering the power chamber 103 through the air outlet 112.

[0066] It should be noted that the base 210 in this embodiment is provided with through holes to reduce the weight of the base 210, and some gas can enter and exit through the through holes of the base 210, thereby improving heat dissipation efficiency. The power assembly 220 includes a fan 221 connected to the base 210. The fan 221 is located in the power chamber 103 and blows air toward the exhaust chamber 104; therefore, under the action of the fan 221, the gas in the power chamber 103 can flow into the exhaust chamber 104, and the flow of gas can be promoted, thereby improving heat dissipation efficiency.

[0067] Based on the above, it can be understood that outside air can enter through the through hole in the base 210 that communicates with the control chamber 102 and the power chamber 103, flow to the exhaust chamber 104 under the action of the fan 221, and then flow out through the through hole that communicates with the exhaust chamber 104.

[0068] Therefore, in this embodiment, two second intermediate partition plates 140 are provided. One second intermediate partition plate 140 is close to the air outlet 112 and connected to the top wall of the housing 110. The other second intermediate partition plate 140 abuts against the base 210 to prevent hot air from flowing back into the power chamber 103 through the through hole of the base 210.

[0069] The two second intermediate partitions 140 are spaced apart, so that the fan 221 can be directly facing the gap between the two second intermediate partitions 140, avoiding obstruction of the gas flow, and allowing the gas to flow from the power chamber 103 to the exhaust chamber 104 under the guidance of the fan 221.

[0070] In other embodiments, the number of second intermediate partitions 140 can be adjusted according to actual conditions.

[0071] In summary, the housing 110 in this embodiment is provided with an air inlet 111 and an air outlet 112 communicating with the chamber 101. This allows external air to flow in through the air inlet 111 to dissipate heat from the power component 220 inside the chamber 101. Subsequently, the heated air flows out through the air outlet 112, thus achieving continuous heat dissipation and improving heat dissipation efficiency. In this embodiment, an arc-shaped guide surface 113 is provided at the edge of the air inlet 111. External air can flow towards the air inlet 111 under the guidance of the arc-shaped guide surface 113, thereby promoting airflow and ensuring airflow while reducing the number or area of ​​the air inlets 111. The reduced number or area of ​​the air inlets 111 reduces noise, thus improving noise reduction. In this embodiment, a filter mesh 120 is installed in the air inlet 111 to prevent large impurities from entering the chamber 101 and damaging the power component 220 inside the chamber 101.

[0072] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A noise reducing bellows, characterized in that, The application relates to a noise reduction air bellow (100), which comprises the following parts: a box (110) provided with an air inlet (111) and an air outlet (112), wherein the air inlet (111) and the air outlet (112) are communicated with a cavity (101) of the box (110); at least two filter meshes (120) arranged at the air inlet (111) and the air outlet (112) respectively; wherein the edge of the air inlet (111) is provided with a circular arc guide surface (113) for guiding external air to enter the cavity (101).

2. The noise reducing bellows of claim 1, wherein, The circular arc guide surface (113) comprises an arc-shaped part (1131) and a mounting part (1132), the mounting part (1132) is close to the cavity (101) and is connected with the arc-shaped part (1131); the arc-shaped part (1131) extends from the mounting part (1132) to the outside for guiding external air to move to the mounting part (1132); the filter mesh (120) is mounted on the air inlet (111) and is connected with the mounting part (1132).

3. The noise reducing bellows of claim 1, wherein, The end of the box (110) close to the air inlet (111) is provided with a first guide inclined surface (114) for guiding external air to flow to the circular arc guide surface (113).

4. The noise reducing bellows of claim 1, wherein, The end of the box (110) close to the air outlet (112) is provided with a second guide inclined surface (115) for guiding air to move from the cavity (101) to the outside.

5. The noise reducing bellows of claim 1, wherein, The noise reduction air bellow (100) further comprises a first intermediate partition plate (130) and a second intermediate partition plate (140), wherein the first intermediate partition plate (130) and the second intermediate partition plate (140) are arranged in the cavity (101) and are connected with the inner wall of the box (110); the first intermediate partition plate (130) and the second intermediate partition plate (140) are used for dividing the cavity (101) into a control cavity (102), a power cavity (103) and an exhaust cavity (104) which are communicated in sequence, the control cavity (102) is communicated with the air inlet (111), and the exhaust cavity (104) is communicated with the air outlet (112).

6. The noise reducing bellows of claim 5, wherein, The noise reduction air bellow (100) further comprises a silencer (150) arranged in the power cavity (103) and close to the air inlet (111), wherein the silencer (150) is connected with the inner wall of the box (110); wherein the silencer (150) is arranged in a spaced mode with the first intermediate partition plate (130).

7. The noise reducing bellows of claim 5, wherein, The second intermediate partition plate (140) is connected with the side wall where the air outlet (112) is arranged, and is used for resisting air from entering the power cavity (103) through the air outlet (112).

8. A genset, characterized by The application relates to a noise reduction air bellow (100), which comprises the following parts: The base (210), the power assembly (220) and the noise reduction wind box (100) according to any one of claims 1-7; the noise reduction wind box (100) is covered on the base (210) and connected with the base (210); The power assembly (220) is connected with the base (210); the box (110) is provided with an opening, and the power assembly (220) enters the cavity (101) through the opening.

9. The generator set of claim 8, wherein, The noise reduction wind box (100) comprises at least two second intermediate partitions (140), and the two second intermediate partitions (140) are connected to the inner wall of the box (110) in a spaced manner. The power assembly (220) comprises a fan (221), and the fan (221) is opposite to the spacing between the two second intermediate partitions (140).

10. The generator set of claim 8, wherein, The power assembly (220) comprises a controller (222), an engine (223) and an exhaust fan (224), the controller (222) is located in a control cavity (102), the engine (223) is located in a power cavity (103), and the exhaust fan (224) is located in an exhaust cavity (104); The controller (222), the engine (223) and the exhaust fan (224) are all connected with the base (210).

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