Noise reduction device of diesel generator

Abstract

The utility model relates to a noise reduction device of a diesel generator, which comprises ventilation silencers arranged at an air inlet and an air outlet of the diesel generator. A plurality of ventilation openings are formed in the ventilation silencer; the sound insulation cover is erected on the ventilation silencer and extends to the ground in the height direction of the ventilation silencer, and the two sides of the sound insulation cover are open; the ventilation silencer and the sound insulation cover jointly define a containing space for containing the diesel generator. A ventilation silencer and a sound insulation cover are arranged on the periphery of a diesel generator, the ventilation silencer is arranged at an air inlet and an air outlet of the diesel generator, and a containing space used for containing the diesel generator is jointly defined by the ventilation silencer and the sound insulation cover. In addition, a plurality of ventilation openings are formed in the ventilation silencer. Therefore, the noise and heat dissipation problems generated in the using process of the diesel generator are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of generator noise reduction, in particular to a diesel generator noise reduction device. Background Art

[0002] Small diesel generator sets with power less than 30 kilowatts are widely used in various fields of social life as temporary power sources and backup power sources, and are also one of the most frequently used equipment on construction sites.

[0003] However, the noise from diesel generators disturbs people. In some application scenarios, the placement of diesel generators is not fixed and sometimes they need to be moved to different areas for use, especially diesel generators used on construction sites.

[0004] In this case, it is not very appropriate to build a conventional soundproof room to eliminate the noise generated by the diesel generator, because the cost of a conventional soundproof room is relatively high, and if it is only used for a short time and then dismantled, it is a waste of money and materials. In addition, for scenes with mobile use requirements, ordinary soundproof rooms are not convenient to move, nor are they convenient to disassemble and reassemble.

[0005] In summary, a sound-absorbing and insulating cover that is inexpensive, easy to move or easy to disassemble and assemble is needed to reduce the impact of noise generated by diesel generators on the surrounding environment. This sound-absorbing and insulating cover must also be able to meet the ventilation and heat dissipation needs of the diesel generator. Utility Model Content

[0006] The utility model aims to provide a diesel generator noise reduction device, which solves the noise reduction and heat dissipation problems of the diesel generator in the use process in the prior art.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The utility model provides a diesel generator noise reduction device, comprising:

[0009] A ventilation muffler, which is arranged at the air inlet and outlet of the diesel generator; and the ventilation muffler is provided with a plurality of ventilation holes;

[0010] A soundproof cover, which is placed on the ventilation muffler and extends to the ground along the height direction of the ventilation muffler; and the two sides of the soundproof cover are open, and the open sides are covered by the ventilation muffler;

[0011] The ventilation silencer and the sound insulation cover together enclose a storage space for accommodating the diesel generator.

[0012] Furthermore, the ventilation openings are arranged in an array.

[0013] Furthermore, a limit fixing frame is detachably provided on the outer periphery of the ventilation silencer, and a plurality of ground nail fixing holes for ground nails to be inserted are provided at the bottom edge of the limit fixing frame.

[0014] Furthermore, a vibration isolation layer is provided on the inner side wall of the position limiting and fixing frame.

[0015] Furthermore, the position-limiting fixing frame and the sound insulation cover are detachably connected via a quick-connect assembly.

[0016] Furthermore, the quick-connect assembly includes a quick-connect hook arranged at the edge of the opening of the sound insulation cover and a quick-connect fixing ring arranged at the edge of the limit fixing frame.

[0017] Furthermore, vibration isolation pads are laid on the bottom of the diesel generator and the ventilation muffler respectively.

[0018] Furthermore, a plurality of ground nail fixing holes for ground nails to be inserted are provided at the bottom edge of the sound insulation cover.

[0019] Furthermore, an inspection opening is provided on the sound insulation cover, and an inspection door is provided at the inspection opening.

[0020] Further, one side of the inspection door is rotatably connected to the sound insulation enclosure, and the other side of the inspection door is detachably connected to the sound insulation enclosure via a fastening assembly.

[0021] Furthermore, the fastening assembly includes a Velcro mother surface arranged around the inspection port and a Velcro sub-surface arranged on the inner side of the inspection door, and the Velcro mother surface corresponds to the Velcro sub-surface.

[0022] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0023] The utility model discloses a diesel generator noise reduction device, which arranges a ventilation muffler and a soundproof cover on the periphery of the diesel generator, arranges the ventilation muffler at the air inlet and outlet of the diesel generator, and forms a storage space for accommodating the diesel generator by enclosing the ventilation muffler and the soundproof cover. In addition, a plurality of ventilation holes are provided on the ventilation muffler, thereby effectively solving the noise and heat dissipation problems generated by the diesel generator during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0025] Figure 1It is a structural schematic diagram of a diesel generator noise reduction device provided by the utility model;

[0026] Figure 2 It is a structural schematic diagram of a ventilation muffler in a diesel generator noise reduction device provided by the utility model;

[0027] Figure 3 It is a structural schematic diagram of a limit fixing frame in a diesel generator noise reduction device provided by the utility model;

[0028] Figure 4 This is a structural schematic diagram of a sound insulation cover in a diesel generator noise reduction device provided by the utility model (I);

[0029] Figure 5 This is a structural schematic diagram of a sound insulation cover in a diesel generator noise reduction device provided by the utility model (II);

[0030] Figure 6 The utility model provides Figure 1 A in the enlarged view;

[0031] The reference numerals are described as follows:

[0032] 1. Ventilation silencer; 100. Ventilation port; 101. Limit fixing frame; 1010. Ground nail; 1011. Ground nail fixing hole; 2. Sound insulation cover; 200. Inspection port; 201. Inspection door; 3. Quick-connect assembly; 300. Quick-connect hook; 301. Quick-connect fixing ring; 4. Vibration isolation pad; 5. Fastening assembly; 500. Velcro mother surface; 501. Velcro sub surface. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1 The diesel generator noise reduction device in the utility model comprises a ventilation muffler 1 arranged at the air inlet and outlet of the diesel generator and a soundproof cover 2 erected on the ventilation muffler 1 and extending to the ground along the height direction of the ventilation muffler 1. The ventilation muffler 1 and the soundproof cover 2 together enclose a storage space for accommodating the diesel generator.

[0035] In the present utility model embodiment, refer to Figure 2The ventilation muffler 1 is provided with a plurality of ventilation openings 100, the positions of the ventilation openings 100 are opposite to the positions of the air inlet and outlet of the diesel generator, and the ventilation openings 100 are arranged in an array. The number of ventilation openings 100 can be reasonably arranged according to needs. In actual arrangement, the ventilation area formed by the plurality of ventilation openings 100 is slightly larger than the air outlet area of ​​the diesel generator itself.

[0036] Because when the area of ​​the vent 100 is arranged moderately and reasonably, the speed of the airflow can be effectively reduced, thereby reducing the noise generated when the airflow passes through the ventilation muffler 1. In addition, a suitable area of ​​the vent 100 can effectively promote the flow of airflow, allowing cooling air to enter the diesel generator housing more smoothly, and prevent overheating caused by insufficient airflow. Further improve the heat dissipation efficiency, reduce the temperature of mechanical parts, and extend the service life of the equipment. If the area of ​​the vent 100 is too small, the airflow may reflux, resulting in unstable operation or reduced efficiency of the generator set. Appropriately adjusting the area of ​​the vent 100 can enhance the adaptability of the device to different working conditions.

[0037] In order to facilitate the position fixing of the ventilation muffler 1 and prevent it from tipping over or other unexpected situations during operation, in the embodiment of the utility model, a position fixing frame 101 is provided on the periphery of the ventilation muffler 1. The position fixing frame 101 is sleeved on the periphery of the ventilation muffler 1 and is adapted to the outer peripheral side profile of the ventilation muffler 1. At the same time, in order to further improve the stability of the position fixing, in the embodiment of the utility model, refer to Figure 3 A plurality of ground nail fixing holes 1011 for the ground nails 1010 to pass through are provided at the bottom edge of the aforementioned limit fixing frame 101. By matching the ground nails 1010 with the ground nail fixing holes 1011, the aforementioned limit fixing frame 101 is fixed on the ground base.

[0038] In addition, in the embodiment of the utility model, a vibration isolation layer is provided on the inner surface layer of the aforementioned limit fixing frame 101. The provision of the internal vibration isolation layer is intended to avoid damage caused by collision between the ventilation muffler 1 and the limit fixing frame 101 and to reduce the noise generated by the collision between the two. In the embodiment of the utility model, the material of the internal vibration isolation layer is mainly elastic polymer material, such as rubber, rubber-plastic elastomer, polyurethane elastomer, etc. Of course, it is not limited to the above-mentioned vibration isolation materials, as long as the vibration isolation material can achieve good vibration isolation effect, it should be included in the scope of the utility model.

[0039] With respect to the aforementioned soundproof cover 2, the soundproof cover 2 is set on the ventilation silencer 1 on both sides of the diesel generator, more specifically, it is set on the aforementioned limit fixing frame 101 and the ventilation silencer 1. Therefore, the limit fixing frame 101 and the ventilation silencer 1 provide corresponding supporting positions and supporting forces for the soundproof cover 2. In addition, the soundproof cover 2 extends to the ground along the height direction of the ventilation silencer 1, and the two sides of the cover body are set to be open, and the open part is covered by the ventilation silencer 1 to ensure that the ventilation port 100 of the ventilation silencer 1 is exposed.

[0040] In the embodiment of the utility model, the soundproof cover 2 is made of an outer silicone canvas and a sound-absorbing material filled in the silicone canvas, which are sewn with steel wire. The silicone canvas is waterproof, flame retardant, scratch-resistant, tear-resistant, and durable. The sound-absorbing material filled inside it mainly adopts materials with relatively good sound absorption performance such as glass fiber, rock wool, polyester fiber, polyurethane foam, etc. Of course, it is not limited to the use of the above-mentioned silicone canvas and sound-absorbing materials. As long as the sound-absorbing material and any cover material that can achieve good sound absorption effect should be included in the scope of the utility model.

[0041] In addition, in the embodiment of the present utility model, refer to Figure 4 and Figure 5 A plurality of ground nail fixing holes 1011 for the ground nails 1010 to pass through are also provided at the bottom edge of the sound insulation cover 2, so as to limit and fix the sound insulation cover 2 on the ground.

[0042] If the diesel generator noise reduction device involved in the utility model is used on the land, the above-mentioned limit fixing frame 101 and the sound insulation cover 2 can be fixed by directly driving the ground nails 1010 into the soil layer. If the noise reduction device is used on a cement floor, it is necessary to drill a mounting hole on the cement floor, and then fix it with expansion bolts or high-strength concrete self-drilling anchor bolts to play a stabilizing role.

[0043] In order to facilitate the maintenance of the operating status of the diesel generator in the soundproof enclosure 2, in the embodiment of the utility model, an inspection port 200 is opened on the soundproof enclosure 2, and an inspection door 201 is provided at the inspection port 200. The material of the inspection door 201 is also composed of organic silicon canvas and sound-absorbing material filled in the door. The inspection door 201 is sewn to the edge of the inspection port 200 with steel wire. A handle is simultaneously provided on the inspection door 201, and the handle material is also organic silicon canvas, and is sewn to the inspection door 201 with steel wire. The size and shape of the inspection port 100 can be adjusted as needed. The shape and size of the inspection door 201 can also be reasonably arranged as needed.

[0044] In the embodiment of the utility model, one side of the inspection door 201 is rotatably connected to the soundproof enclosure 2, and the other side of the inspection door 201 is detachably connected to the soundproof enclosure 2 via a fastening assembly 5, thereby realizing the opening and closing of the inspection door 201.

[0045] Specifically, one side of the inspection door 201 is rotatably connected to the soundproof enclosure 2, which may be rotatably connected by a hinge or by other means. The other side of the inspection door 201 is detachably connected to the soundproof enclosure 2 through a fastening assembly 5, and the fastening assembly 5 includes a Velcro mother surface 500 arranged around the inspection port 200 and a Velcro sub-surface 501 arranged on the inner side of the inspection door 201, and the Velcro mother surface 500 corresponds to the Velcro sub-surface 501 to achieve the attraction and separation of the inspection door 201 and the inspection port 200. Of course, it is not limited to using Velcro mother-and-child surfaces for opening and closing, and other methods can also be used for switch processing. The specific switch layout method also needs to be reasonably selected and arranged according to the material of the soundproof enclosure 2.

[0046] In addition, in the embodiment of the utility model, the aforementioned limit fixing frame 101 and the sound insulation cover 2 are configured to be detachably connected, thereby facilitating the disassembly, assembly and movement of the diesel generator noise reduction device. Specifically, the limit fixing frame 101 and the sound insulation cover 2 are detachably connected via a quick-connect assembly 3.

[0047] See also Figure 6 The quick-connect assembly 3 includes quick-connect hooks 300 arranged at the edges of the openings on both sides of the soundproof enclosure 2 and quick-connect fixing rings 301 arranged at the edges of the limit fixing frame 101. The number and position of the quick-connect hooks 300 and the quick-connect fixing rings 301 are one-to-one corresponding. By matching the quick-connect hooks 300 and the quick-connect fixing rings 301, the limit fixing frame 101 and the soundproof enclosure 2 are fixed. Of course, it is not limited to the above-mentioned quick-connect method, and other quick-connect methods should also be included in the scope of the present utility model.

[0048] In the embodiment of the utility model, the diesel generator and the bottom of the ventilation muffler 1 are respectively provided with a vibration isolation pad 4, see Figure 2 During the actual installation, it is necessary to select a suitable vibration isolation pad 4 according to the overall weight, structure and mass distribution of the diesel generator. In the embodiment of the utility model, a whole vibration isolation pad 4 made of foam materials of different hardness is selected. Rubber, rubber foam, polyurethane elastomer and other materials can be used for laying to protect the bottom of the ventilation muffler 1 and the diesel generator from wear and tear and increase the service life of the components. The advantage of laying a whole vibration isolation pad 4 is that the construction is relatively convenient and the device has better adaptability.

[0049] In actual use, first place the vibration isolation pad 4 on the ground base, and then place the diesel generator on the vibration isolation pad 4. Place the ventilation silencer 1 at the air outlet directly opposite the diesel generator. Then, the limiting fixing frame 101 is sleeved on the outer periphery of the ventilation silencer 1 and fixed with the ground nail 1010. Finally, the sound insulation cover 2 is laid on the surface of the limiting fixing frame 101, and the sound insulation cover 2 is fixed together with the limiting fixing frame 101 of the ventilation silencer 1 by the quick-connect fixing ring 301 and the quick-connect hook 300, and the sound insulation cover 2 is fixed to the ground with the ground nail 1010. In this way, the diesel generator is enclosed to form a detachable noise reduction and heat dissipation space.

[0050] In summary, the diesel generator noise reduction device disclosed in the utility model integrates a ventilation muffler and a soundproof cover, and opens a vent on the ventilation muffler to form a storage space for the diesel generator. The noise and heat dissipation problems generated by the diesel generator during use are effectively solved. The device is easy to disassemble, install and overhaul the motor, and has strong adaptability.

[0051] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A diesel generator noise reduction device, characterized in that: include: A ventilation muffler (1), the ventilation muffler (1) being arranged at the air inlet and the air outlet of the diesel generator; and the ventilation muffler (1) being provided with a plurality of ventilation holes (100); A soundproof cover (2), the soundproof cover (2) being mounted on the ventilation muffler (1) and extending to the ground along the height direction of the ventilation muffler (1); and the soundproof cover (2) is open on both sides, and the open sides are covered by the ventilation muffler (1); The ventilation silencer (1) and the sound insulation cover (2) together enclose a storage space for accommodating the diesel generator.

2. A diesel generator noise reduction device according to claim 1, characterized in that: A limit fixing frame (101) is detachably provided on the outer periphery of the ventilation muffler (1), and a plurality of ground nail fixing holes (1011) for ground nails (1010) to be inserted are provided at the bottom edge of the limit fixing frame (101).

3. A diesel generator noise reduction device according to claim 2, characterized in that: A vibration isolation layer is provided on the inner side wall of the position limiting and fixing frame (101).

4. A diesel generator noise reduction device according to claim 2, characterized in that: The position-limiting fixing frame (101) and the sound insulation cover (2) are detachably connected via a quick-connect assembly (3).

5. A diesel generator noise reduction device according to claim 4, characterized in that: The quick-connect assembly (3) comprises a quick-connect hook (300) arranged at the edge of the opening of the sound insulation cover (2) and a quick-connect fixing ring (301) arranged at the edge of the position-limiting fixing frame (101).

6. A diesel generator noise reduction device according to claim 1, characterized in that: Vibration isolation pads (4) are laid on the bottom of the diesel generator and the ventilation muffler (1), respectively.

7. A diesel generator noise reduction device according to claim 1, characterized in that: A plurality of ground nail fixing holes (1011) for installing ground nails (1010) are provided at the bottom edge of the sound insulation cover (2).

8. A diesel generator noise reduction device according to claim 1, characterized in that: The soundproof enclosure (2) is provided with an inspection opening (200), and the inspection opening (200) is provided with an inspection door (201).

9. A diesel generator noise reduction device according to claim 8, characterized in that: One side of the inspection door (201) is rotatably connected to the sound insulation enclosure (2), and the other side of the inspection door (201) is detachably connected to the sound insulation enclosure (2) via a fastening assembly (5).

10. A diesel generator noise reduction device according to claim 9, characterized in that: The fastening assembly (5) comprises a Velcro mother surface (500) arranged around the inspection opening (200) and a Velcro sub-surface (501) arranged inside the inspection door (201), the Velcro mother surface (500) corresponding to the Velcro sub-surface (501).

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