Low-noise box body for diesel generating set

Abstract

The utility model discloses a low-noise box body for a diesel generating set, which comprises a mounting base, a partition plate component and a plurality of partition plates, the front-end air inlet plate is mounted on the mounting base and is provided with a first air inlet, and a first noise reduction ventilation hood is arranged at the first air inlet on the inner side surface of the front-end air inlet plate; the rear-end exhaust plate is mounted on the mounting base, and an exhaust outlet is formed in the rear-end exhaust plate; the left air inlet plate is mounted on the mounting base and is provided with a second air inlet, and a second noise reduction ventilation hood is arranged at the second air inlet on the inner side surface of the left air inlet plate; the right air inlet plate is mounted on the right side surface of the mounting base, a third air inlet is formed in the right air inlet plate, and a third noise reduction ventilation hood is arranged at the third air inlet on the inner side surface of the right air inlet plate; and the top cover covers the front-end air inlet plate, the rear-end air exhaust plate, the left-side air inlet plate and the right-side air inlet plate to form a box body. The structure is simple, noise generated during operation of the generator set can be effectively absorbed and blocked, and outward transmission of the noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel generator sets, in particular to a low-noise box for a diesel generator set. Background Art

[0002] Diesel generator sets are a common type of power generation equipment, widely used in industrial, commercial, and residential applications. However, diesel generators often generate considerable noise during operation, causing significant noise pollution to the surrounding environment. Prolonged exposure to this noise can pose significant health risks to workers. Existing diesel engine housings lack noise reduction structures, making them ineffective at reducing the noise generated during operation. Therefore, there is an urgent need for improved technologies to address this issue. Utility Model Content

[0003] The technical problem to be solved by this application is that the existing diesel generator set box lacks a noise reduction structure, which is unable to reduce the noise generated during the operation of the diesel engine and has a poor use effect.

[0004] In order to solve the above technical problems, the present application provides a low-noise box for a diesel generator set, comprising: a mounting base, on which a partition assembly is vertically mounted; a front air inlet plate, vertically fixedly mounted on the mounting base to form the front side of the box, a first air inlet is provided on the front air inlet plate, and a first noise reduction ventilation cover is provided on the inner side of the front air inlet at the first air inlet, and the opening end of the first noise reduction ventilation cover is staggered with the air inlet of the first air inlet; a rear end air exhaust plate, vertically fixedly mounted on the mounting base to form the rear side of the box, and an air outlet is provided on the rear end air exhaust plate; a left side air inlet plate, vertically fixedly mounted on the mounting base to form the left side of the box, the left side air inlet plate includes a first mounting frame, and the first mounting frame is detachable A second air inlet plate and a first side plate are installed. The second air inlet plate is provided with a second air inlet. The inner side surface of the second air inlet plate is provided with a second noise reduction ventilation cover at the second air inlet. The opening end of the second noise reduction ventilation cover is staggered with the air inlet of the second air inlet. The right air inlet plate is vertically fixedly installed on the mounting base to form the right side of the box body. The right air inlet plate includes a second mounting frame. The second mounting frame is detachably mounted with a third air inlet plate and a second side plate. The inner side surface of the third air inlet plate is provided with a third noise reduction ventilation cover at the third air inlet. The opening end of the third noise reduction ventilation cover is staggered with the air inlet of the third air inlet. A top cover is covered on the front air inlet plate, the rear air exhaust plate, the left air inlet plate and the right air inlet plate to form the box body. Among them, the partition assembly is installed between the left air inlet plate and the right air inlet plate, dividing the interior of the box body into a front air inlet chamber and a rear air exhaust chamber. The front air inlet chamber is provided with a motor and an engine, and the rear air exhaust chamber is provided with a heat dissipation water tank and a silencer type exhaust pipe.

[0005] According to an embodiment of the present application, the front air inlet plate, the rear air exhaust plate, the second air inlet plate, the first side panel, the third air inlet plate, the second side panel and the top cover all include an inner sound-absorbing panel, a middle sound insulation layer and an outer shell.

[0006] According to an embodiment of the present application, the top cover is rectangular, and vehicle panel locks are provided at the four corners of its upper surface for fixation.

[0007] According to an embodiment of the present application, the first noise reduction ventilation hood, the second noise reduction ventilation hood and the third noise reduction ventilation hood are all covered with sound-absorbing cotton and sound-insulating cotton.

[0008] According to an embodiment of the present application, a shock absorbing assembly is provided at the bottom of the motor and the engine and is connected to the mounting base.

[0009] According to an embodiment of the present application, the outlet of the silencer type smoke exhaust pipe is lower than the lowest point of the air outlet.

[0010] According to an embodiment of the present application, a control screen, a switch button, and a control button are provided on the front air inlet plate.

[0011] According to an embodiment of the present application, the second air inlet plate and the first side plate are both mounted on the first mounting frame via a plane lock.

[0012] According to an embodiment of the present application, the third air inlet plate and the second side plate are both mounted on the second mounting frame via a plane lock.

[0013] According to an embodiment of the present application, an opening is provided on the partition assembly for installing a water-cooling fan to bring heat into the heat dissipation water tank for heat dissipation.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The cabinet used in this utility model is equipped with a front air inlet and air inlets on the left and right sides. The air inlets are all equipped with semi-enclosed noise-reducing ventilation covers within the cabinet. The air outlet of each noise-reducing ventilation cover is staggered as much as possible from the air inlet it blocks to form an air duct wall, increasing the length of the sound-absorbing channel. The air duct wall blocks, reflects, and absorbs noise, greatly reducing the noise transmitted from the air inlet and improving the quietness of the unit operation. At the same time, each noise-reducing ventilation cover is equipped with sound-absorbing and sound-insulating cotton, further strengthening the air duct wall's ability to reflect and absorb noise.

[0016] 2. The components of the box of the utility model all adopt a three-layer structure of an inner sound-absorbing panel, a middle sound insulation layer and an outer shell, which can effectively absorb and block the noise generated when the generator set is running and reduce the noise from propagating outward.

[0017] 3. In this application, the exhaust port of the box is arranged higher than the outlet of the silencer exhaust pipe, so that the noise is reflected by the rear bulkhead and then reflected multiple times in the exhaust chamber and absorbed by the inner wall, further reducing the rear end emission noise.

[0018] 4. The shock-absorbing base at the bottom of the generator and engine can reduce the vibration transmission during the operation of the generator set, further reducing the noise generation.

[0019] 5. After actual testing, in the same power range, the cabinet of this application can reduce the noise by about 3-4dB compared with the products on the market.

[0020] 6. The left and right sides of the box use frames that can be customized in batches as the installation base. The installation base adopts a flat lock structure to install the side panels and top cover. The overall production is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not limitations to the present application.

[0022] Figure 1 This is a structural diagram of a low-noise box for a diesel generator set according to an example of the present invention;

[0023] Figure 2 for Figure 1 A top view of

[0024] Figure 3 The box edge of the utility model example Figure 2 Schematic diagram of the internal structure after sectioning along the AA axis;

[0025] Figure 4 The box edge of the utility model example Figure 2 Schematic diagram of the internal structure after cutting open in the CC direction;

[0026] Figure 5 for Figure 1 The main view;

[0027] Figure 6 for Figure 1 Right view;

[0028] Figure 7 for Figure 1 rear view.

[0029] The following are the descriptions of the reference numerals:

[0030] 10. Box body, 11. Front air inlet plate, 12. Mounting base, 13. Right air inlet plate, 14. Top cover, 15. Left air inlet plate, 16. Partition assembly, 17. Rear exhaust plate, 111. First air inlet, 112. First noise reduction ventilation hood, 131. Third air inlet, 132. Flat lock, 133. Third noise reduction ventilation hood, 141. Vehicle panel lock, 151. Second air inlet, 152. Second noise reduction ventilation hood, 171. Exhaust port. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by persons of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar expressions used in this patent specification and claims do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather denote the presence of at least one.

[0033] according to Figures 1 to 7 The utility model shows a low-noise box for a diesel generator set, which includes a mounting base 12, a front air inlet plate 11, a rear air exhaust plate 17, a left air inlet plate 15, a right air inlet plate 13 and a top cover 14, which are combined to form a box body 10. A partition is provided in the box body 10 to separate it into a front air inlet chamber and a rear air exhaust chamber. The partition and the components of the box body 10 are composed of sound-absorbing materials, sound-insulating materials and metal plates. The air inlet is provided with a semi-enclosed noise-reducing ventilation hood in the box body 10, and a silencer type exhaust pipe is also installed in the box body. Compared with the lack of effective noise reduction boxes for diesel generator sets in the prior art, the box design of the present application reduces the overall noise spillover. The air duct wall of the noise-reducing ventilation hood reflects and absorbs the noise, thereby reducing the noise transmitted outward from the air inlet and improving the quietness of the unit operation.

[0034] In this embodiment, a partition assembly 16 is vertically mounted on the mounting base 12 .

[0035] Specifically, the mounting base 12 includes an inner sound-absorbing panel, a middle sound-insulating layer and an outer shell, that is, the mounting base 12 can be composed of sound-absorbing material, sound-insulating material and a metal plate shell.

[0036] In this embodiment, Figure 1 、 Figure 3 As shown, the front air inlet plate 11 is vertically fixedly installed on the front side of the mounting base 12, and a first air inlet 111 is provided on the front air inlet plate 11. The inner side of the front air inlet plate 11 is provided with a first noise reduction ventilation cover 112 at the first air inlet 111, and the opening end of the first noise reduction ventilation cover 112 is staggered with the air inlet of the first air inlet 111.

[0037] Specifically, the air outlet of the first noise reduction ventilation cover 112 assembly of the first air inlet 111 is staggered to the maximum extent possible to increase the length of the sound absorption channel, thereby improving the sound absorption effect.

[0038] Specifically, a control panel, a switch button, and a regulating knob are further provided on the front air inlet plate 11. The bottom of the front air inlet plate 11 can be fixed to the mounting base 12 by bolts.

[0039] Specifically, the front air inlet plate 11 includes an inner sound-absorbing panel, a middle sound-insulating layer and an outer shell, that is, the front air inlet plate 11 can be composed of sound-absorbing material, sound-insulating material and a metal plate shell.

[0040] In this embodiment, Figure 7 As shown, the rear exhaust plate 17 is vertically fixedly mounted on the rear side of the mounting base 12 , and an exhaust port 171 is provided on the rear exhaust plate 17 .

[0041] Specifically, a plane lock 132 is further provided on the upper portion of the rear end exhaust plate 17 , and the bottom portion of the rear end exhaust plate 17 can be fixed to the mounting base 12 by bolts.

[0042] Specifically, the rear end air exhaust plate 17 includes an inner sound absorbing panel, a middle sound insulating layer and an outer shell, that is, the rear end air exhaust plate 17 can be composed of sound absorbing material, sound insulating material and a metal plate shell.

[0043] In this embodiment, Figure 3 、 Figure 4 、 Figure 6As shown, the left air inlet plate 15 is vertically fixedly installed on the mounting base 12 to become the left side of the box body, the left air inlet plate 15 includes a first mounting frame, and the second air inlet plate and the first side panel are detachably mounted on the first mounting frame, the second air inlet plate is provided with a second air inlet port 152, and the inner side surface of the second air inlet plate is provided with a second noise reduction ventilation cover 152 at the second air inlet port 151, and the opening end of the second noise reduction ventilation cover 152 is staggered with the air inlet of the second air inlet port 151; the right air inlet plate 13 is vertically fixedly installed on the mounting base 12 to become the right side of the box body, the right air inlet plate 13 includes a second mounting frame, and the third air inlet plate and the second side panel are detachably mounted on the second mounting frame, the third air inlet plate is provided with a third air inlet port 131, and the inner side surface of the third air inlet plate is provided with a third noise reduction ventilation cover 133 at the third air inlet port 131, and the opening end of the third noise reduction ventilation cover 133 is staggered with the air inlet of the third air inlet port 131.

[0044] Specifically, the outlet end of the second noise reduction ventilation hood 152 is staggered with the second air inlet 151 to the maximum extent, and the outlet end of the third noise reduction ventilation hood 133 is staggered with the third air inlet 131 to the maximum extent. Such a design can increase the length of the sound absorption channel, enhance noise reflection and absorption, and thus improve the sound absorption effect.

[0045] Specifically, the left air inlet plate 15 and the right air inlet plate 13 include an inner sound-absorbing panel, a middle sound insulation layer and an outer shell, that is, the left air inlet plate 15 and the right air inlet plate 13 can also be composed of sound-absorbing material, sound insulation material and a metal plate shell.

[0046] Specifically, if Figure 1As shown, the left air inlet plate 15 is composed of a first mounting frame and a second air inlet plate and a first side panel provided on the mounting frame, the second air inlet plate and the first side panel are both embedded in the frame of the first mounting frame for installation and fixed by a flat lock, wherein the first mounting frame, the second air inlet plate and the first side panel can all be customized in batches at the factory; the right air inlet plate 13 is composed of a second mounting frame and a third air inlet plate and a second side panel provided on the mounting frame, the third air inlet plate and the second side panel are both embedded in the frame of the second mounting frame for installation and fixed by a flat lock, wherein the second mounting frame, the third air inlet plate and the second side panel can all be customized in batches at the factory, thus showing that the box body of the present application is simple to manufacture and can be customized in batches. Among them, the partition assembly 16 is installed between the left air inlet plate 15 and the right air inlet plate 13, dividing the interior of the box body 10 into a front air inlet chamber and a rear air exhaust chamber. It can be understood that, on the left and right sides of the front air inlet plate 11, one side is the second air inlet plate and the other side is the second side panel without the air inlet, and on the left and right sides of the rear end air exhaust plate 17, one side is the third air inlet plate and the other side is the first side panel without the air inlet. It can be seen that the second air inlet 151 of the left air inlet plate 15 and the third air inlet 131 of the right air inlet plate 13 are staggered and separated by the partition assembly 16. The front air inlet chamber includes the front air inlet plate 11, the first air inlet 111, the second air inlet 151 and the partition assembly 16, and the rear end exhaust chamber includes the rear end exhaust plate 17, the partition assembly 16, but does not include the first air inlet 111 and the second air inlet 151.

[0047] Specifically, the partition assembly 16 divides the interior of the box body 10 into a front air intake chamber and a rear exhaust chamber. The front air intake chamber houses the motor and engine, while the rear exhaust chamber houses a heat sink and a silencer exhaust pipe. The motor and engine are both equipped with a shock-absorbing assembly at the bottom, connected to the mounting base 12, to reduce the vibration and noise generated by the diesel generator set during operation. The outlet of the silencer exhaust pipe is lower than the lowest point of the exhaust port 171, allowing noise to reflect off the rear bulkhead, then be reflected multiple times within the exhaust chamber and absorbed by the inner wall, thereby reducing the noise ultimately emitted from the rear end. The partition assembly 16 has openings for installing a water-cooling fan to carry heat to the heat sink for dissipation.

[0048] In this embodiment, the top cover 14 covers the front air inlet plate 11 , the rear air outlet plate 17 , the left air inlet plate 15 and the right air inlet plate 13 to form the box body 10 .

[0049] Specifically, the top cover 14 is preferably rectangular, and vehicle panel locks 141 are provided at the four corners of its upper surface, that is, the top cover is preferably fixed using vehicle panel locks.

[0050] Specifically, the top cover 14 includes an inner sound-absorbing panel, a middle sound-insulating layer and an outer shell, that is, the top cover 14 can be composed of sound-absorbing material, sound-insulating material and a metal sheet shell.

[0051] Specifically, the first noise reduction ventilation cover 112, the second noise reduction ventilation cover 152 and the third noise reduction ventilation cover 133 are all covered with sound-absorbing cotton and sound-insulating cotton to reduce the overall noise overflow.

[0052] Specifically, the installation between the mounting base 12, the front air inlet plate 11, the rear air exhaust plate 17, the left air inlet plate 15, the right air inlet plate 13, the top cover 14 and the partition assembly 16 can be completed by fasteners, including bolts, slots and the like.

[0053] In this embodiment, the working principle of a low-noise box for a diesel generator set is as follows: when the diesel generator set is running, fresh air enters the respective noise-reducing ventilation hoods from the air inlets of the front air inlet plate 11, the right air inlet plate 13 and the left air inlet plate 15 of the box respectively. The fresh air enters the engine group from the front air inlet chamber to participate in combustion and then enters the silencer exhaust pipe. After the initial silencing, the smoke enters the rear exhaust chamber and is blocked by the rear exhaust plate 17 of the box to form a reflection. It is reflected multiple times in the rear exhaust chamber and absorbed by the inner wall, and finally discharged from the exhaust port 171 of the rear exhaust plate 17 of the box, thereby reducing the wind noise during rear-end discharge. Among them, the noise generated by the operation and vibration of the diesel generator set is mainly reduced through the box shell assembly and partition assembly 16 composed of the inner sound-absorbing panel, the middle sound insulation layer and the outer shell to reduce the overall noise overflow; the noise transmitted outward from the air inlet is reflected and absorbed by the air duct wall of the noise-reducing ventilation hood with sound-absorbing cotton and sound insulation cotton, and finally discharged from each air inlet, thereby reducing the noise transmitted outward from the air inlet and improving the quietness of the unit operation.

[0054] In summary, the technical solution of this application has the following beneficial effects:

[0055] 1. The cabinet used in this utility model is equipped with a front air inlet and air inlets on the left and right sides. The air inlets are all equipped with semi-enclosed noise-reducing ventilation covers within the cabinet. The air outlet of each noise-reducing ventilation cover is staggered as much as possible from the air inlet it blocks to form an air duct wall, increasing the length of the sound-absorbing channel. The air duct wall blocks, reflects, and absorbs noise, greatly reducing the noise transmitted from the air inlet and improving the quietness of the unit operation. At the same time, each noise-reducing ventilation cover is equipped with sound-absorbing and sound-insulating cotton, further strengthening the air duct wall's ability to reflect and absorb noise.

[0056] 2. The components of the box of the utility model all adopt a three-layer structure of an inner sound-absorbing panel, a middle sound insulation layer and an outer shell, which can effectively absorb and block the noise generated when the generator set is running and reduce the noise from propagating outward.

[0057] 3. In this application, the exhaust port of the box is arranged higher than the outlet of the silencer exhaust pipe, so that the noise is reflected by the rear bulkhead and then reflected multiple times in the exhaust chamber and absorbed by the inner wall, further reducing the rear end emission noise.

[0058] 4. The shock-absorbing base at the bottom of the generator and engine can reduce the vibration transmission during the operation of the generator set, further reducing the noise generation.

[0059] 5. After actual testing, in the same power range, the cabinet of this application can reduce noise by about 3-4dB compared with products on the market.

[0060] 6. The left and right sides of the box use frames that can be customized in batches as the installation base. The installation base adopts a flat lock structure to install the side panels and top cover. The overall production is simple and the cost is low.

[0061] The above are merely exemplary embodiments of the present application and are not intended to limit the scope of protection of the present application. The scope of protection of the present application is determined by the appended claims.

Claims

1. A low-noise box for a diesel generator set, characterized in that: include: The base is installed, and a partition assembly is vertically installed on the upper surface; A front air inlet plate is vertically fixedly mounted on the mounting base to form the front side of the box body, the front air inlet plate is provided with a first air inlet, and an inner side surface of the front air inlet plate is provided with a first noise reduction ventilation cover at the first air inlet, and an opening end of the first noise reduction ventilation cover is staggered with the air inlet of the first air inlet; A rear exhaust plate is vertically fixedly mounted on the mounting base to form the rear side of the box body, and an exhaust port is provided on the rear exhaust plate; The left air inlet plate is vertically fixedly mounted on the mounting base to form the left side of the box body, the left air inlet plate includes a first mounting frame, a second air inlet plate and a first side plate are detachably mounted on the first mounting frame, the second air inlet plate is provided with a second air inlet, an inner side surface of the second air inlet plate is provided with a second noise reduction ventilation cover at the second air inlet, and an opening end of the second noise reduction ventilation cover is staggered with the air inlet of the second air inlet; The right air inlet plate is vertically fixedly mounted on the mounting base to form the right side of the box body, the right air inlet plate includes a second mounting frame, a third air inlet plate and a second side plate are detachably mounted on the second mounting frame, a third air inlet port is provided on the third air inlet plate, a third noise reduction ventilation cover is provided on the inner side surface of the third air inlet port at the third air inlet port, and an opening end of the third noise reduction ventilation cover is staggered with the air inlet port of the third air inlet port; A top cover is covered on the front air inlet plate, the rear air exhaust plate, the left air inlet plate and the right air inlet plate to form a box body; Among them, the partition assembly is installed between the left air inlet plate and the right air inlet plate, dividing the interior of the box body into a front air inlet chamber and a rear air exhaust chamber. The front air inlet chamber is installed with a motor and an engine, and the rear air exhaust chamber is installed with a heat dissipation water tank and a silencer exhaust pipe.

2. A low-noise box for a diesel generator set according to claim 1, characterized in that: The front air inlet plate, the rear air outlet plate, the second air inlet plate, the first side plate, the third air inlet plate, the second side plate and the top cover all include an inner sound-absorbing panel, a middle sound insulation layer and an outer shell.

3. The low-noise box for a diesel generator set according to claim 1, characterized in that: The top cover is rectangular, and vehicle panel locks are arranged at the four corners of the upper surface of the top cover.

4. The low-noise box for a diesel generator set according to claim 1, characterized in that: The first noise reduction ventilation cover, the second noise reduction ventilation cover and the third noise reduction ventilation cover are all covered with sound-absorbing cotton and sound-insulating cotton.

5. The low-noise box for a diesel generator set according to claim 1, characterized in that: The bottom of the motor and the engine are both provided with a shock absorbing assembly connected to the mounting base.

6. The low-noise box for a diesel generator set according to claim 1, characterized in that: The outlet of the silencer type smoke exhaust pipe is lower than the lowest point of the air outlet.

7. The low-noise box for a diesel generator set according to claim 1, characterized in that: The front air inlet plate is provided with a control screen, a switch button and a regulating button.

8. The low-noise box for a diesel generator set according to claim 1, characterized in that: The second air inlet plate and the first side plate are both mounted on the first mounting frame through a plane lock.

9. The low-noise box for a diesel generator set according to claim 1, characterized in that: The third air inlet plate and the second side plate are both mounted on the second mounting frame via a plane lock.

10. The low-noise box for a diesel generator set according to claim 1, characterized in that: The partition assembly is provided with openings for installing a water-cooling fan to bring heat into the heat dissipation water tank for heat dissipation.

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