A high efficiency cooled diesel generator set

Abstract

The utility model provides a kind of diesel generating set of high efficiency cooling, including the mute box being mounted on base, mute box is arranged with generator, diesel engine and air cooling mechanism;Air cooling mechanism, it includes fan for generating cooling air flow, wind box being placed in the fan periphery, and air scoop being installed on the wind box and being opposite fan, air cooling passage is formed between the air scoop and wind box, the first air inlet being opened in the front side of mute box is connected with the air scoop;The air cooling mechanism further includes the air scoop being installed on the upper end of wind box, the air scoop is U type and its end is connected with the air cooling passage, the second air inlet being opened in the upper end of mute box is connected with the air scoop;The generator and diesel engine periphery are equipped with cooling cover being mounted on base, the air outlet being opened in the double side of cooling cover is connected with mute box. The utility model adopts three-dimensional air flow circulation design of double air intake, double side air exhaust, ensure that cooling system stable operation.

Description

Technical Field

[0001] This utility model belongs to the field of generator set technology, specifically relating to a high-efficiency cooled diesel generator set. Background Technology

[0002] A diesel generator set is a device that converts the mechanical energy of a diesel engine into electrical energy. It is widely used in backup power, mobile power supply and off-grid power systems.

[0003] Existing diesel generator sets have the following shortcomings during use: 1. The single air inlet design, which only introduces cold air from one side, makes it difficult to fully cover the heat-generating components such as the generator and diesel engine, resulting in poor cooling and inefficient heat absorption. This can easily affect the stability of equipment operation due to untimely heat dissipation. 2. The existing air inlet path design is unreasonable, resulting in high resistance when outside air enters the cooling channel, hindering airflow and preventing the formation of a stable and efficient airflow circulation. 3. The existing air outlet design is unreasonable, causing hot air that has absorbed heat to be unable to be discharged quickly, easily accumulating inside the equipment and reducing the heat exchange efficiency of the cooling system. Those skilled in the art urgently need to solve the above technical problems. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a diesel generator set with high-efficiency cooling, which adopts a three-dimensional airflow circulation design with dual air intake and dual-side exhaust to ensure stable operation of the cooling system.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency cooled diesel generator set includes a base, a generator, a diesel engine, and an air-cooling mechanism; The generator is mounted on the base and connected to the diesel engine. The air-cooling mechanism is mounted on the base and located on the side of the diesel engine away from the generator. A soundproof enclosure is installed on the base, forming a closed space with the base. The generator, diesel engine and air-cooling mechanism are all placed inside the soundproof enclosure. The air-cooling mechanism includes a fan for generating a cooling airflow, an air box placed around the fan, and an air guide shroud mounted on the air box and facing the fan. An air-cooling channel is formed between the air guide shroud and the air box, and the air guide shroud is connected to a first air inlet opened on the front side of the soundproof box. The air-cooling mechanism also includes an air duct installed on the upper end of the air box. The air duct is U-shaped and its end is connected to the air-cooling channel. The air duct is connected to the second air inlet opened on the upper end of the soundproof box. The generator and diesel engine are both equipped with cooling covers mounted on the base, and the cooling covers are connected to the air outlets on both sides of the soundproof box.

[0006] In a preferred embodiment of the present invention, the air guide shroud is installed in an inclined manner inside the air box, and its lower end is arc-shaped and extends into the air box. A plurality of first air guide ports are provided on the air guide shroud at equal intervals, and an inclined air guide plate is installed at each of the plurality of first air guide ports.

[0007] In a preferred embodiment of the present invention, a second air guide is provided at the contact end between the air guide cover and the air box on both sides.

[0008] In a preferred embodiment of this utility model, the air hood is provided with two second air inlets corresponding to the soundproof box, and a mesh protective plate is installed inside the first air inlet and the second air inlet. A detachable air filter is installed on the inner side of both the first air inlet and the second air inlet.

[0009] In a preferred embodiment of the present invention, the cooling shroud has an L-shaped cross-section, and its lower end extends obliquely to the lower end of the air outlet, which is located at the lower ends of both sides of the soundproof box.

[0010] In a preferred embodiment of this utility model, four cooling covers are provided, which are symmetrically installed in pairs on both sides of the soundproof box. Correspondingly, four air outlets are provided, and a mesh protective plate is installed inside the air outlet.

[0011] In a preferred embodiment of the present invention, the upper end of the soundproof box is provided with a left flip cover and a right flip cover, the left flip cover and the right flip cover are respectively hinged to the soundproof box, and the upper end of the air duct is in contact with the lower surface of the left flip cover. Beneficial effects

[0012] This utility model discloses a high-efficiency cooling diesel generator set, which adopts a three-dimensional airflow circulation design with dual air intakes and dual-side exhausts. Cold air is introduced simultaneously through the first and second air intakes and precisely guided by the air guide shroud and U-shaped air duct, so that the airflow concentrates to cover the entire area of ​​the generator and diesel engine, eliminating cooling blind spots. With the design of L-shaped cooling shroud and four air outlets on both sides, hot air can be quickly discharged through independent paths, avoiding heat accumulation in the soundproof box and significantly improving heat exchange efficiency. Moreover, the dual air intake paths are backups for each other, ensuring stable operation of the cooling system. The soundproof enclosure forms a closed space, and the sealing design of the top left and right flip-top covers effectively blocks diesel engine combustion noise, fan airflow noise and mechanical vibration noise, reducing interference with the external environment; This utility model discloses a high-efficiency cooled diesel generator set, which achieves a synergistic improvement in cooling efficiency, noise reduction performance and maintenance convenience through multi-dimensional structural optimization. Attached Figure Description

[0013] Figure 1A schematic diagram of the structure of a high-efficiency cooled diesel generator set provided by this utility model. Figure 1 ; Figure 2 A partial structural diagram of a high-efficiency cooled diesel generator set provided by this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the air-cooling mechanism described in this utility model; Figure 4 A schematic diagram of the structure of a high-efficiency cooled diesel generator set provided by this utility model. Figure 2 ; Figure 5 A partial structural diagram of a high-efficiency cooled diesel generator set provided by this utility model. Figure 2 .

[0014] In the picture: 1. Base; 2 generators; 3. Diesel engines; 4. Air-cooled mechanism, 41. Fan, 42. Air box, 43. Air guide shroud, 44. Air intake shroud; 5. Silent enclosure; 51. First air inlet; 52. Second air inlet; 53. Air outlet. 6. Cooling shield. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-4 As shown, the present invention provides a high-efficiency cooled diesel generator set, including a base 1, a generator 2, a diesel engine 3, and an air-cooling mechanism 4; The generator 2 is mounted on the base 1 and connected to the diesel engine 3. The air-cooling mechanism 4 is mounted on the base 1 and located on the side of the diesel engine 3 away from the generator 2. A soundproof box 5 is installed on the base 1, forming a closed space with the base 1. The generator 2, diesel engine 3 and air-cooling mechanism 4 are all placed inside the soundproof box 5. The soundproof box forms a closed space, which can effectively block the mechanical noise of the equipment during operation and reduce noise pollution to the external environment. The air-cooling mechanism 4 includes a fan 41 for generating cooling airflow, an air box 42 placed around the fan 41, and an air guide shroud 43 mounted on the air box 42 and facing the fan 41. An air-cooling channel is formed between the air guide shroud 43 and the air box 42. The air guide shroud 43 is connected to the first air inlet 51 opened on the front side of the soundproof box 5. The aforementioned air-cooling mechanism 4 also includes an air duct 44 installed on the upper end of the air box 42. The air duct 44 is U-shaped and its end is connected to the aforementioned air-cooling channel. The air duct 44 is connected to the second air inlet 52 opened at the upper end of the soundproof box 5. The generator 2 and diesel engine 3 are both equipped with cooling covers 6 mounted on the base 1. The cooling covers 6 are connected to the air outlets 53 on both sides of the soundproof box 5. The working principle and beneficial effects of the above embodiments are as follows: After the fan 41 of this utility model is started, it generates driving force, and the outside cold air enters the air-cooling channel through two paths. In the first path, the outside air enters through the first air inlet 51 on the front side of the soundproof box 5, and directly merges into the air-cooling channel formed by the air guide 43 and the air box 42 through the air guide 43. In the second path, the outside air enters through the second air inlet 52 at the top of the soundproof box 5, and is guided to the air-cooling channel through the U-shaped air guide 44, where it merges with the cold air in the first path. Fan 41 drives the cold air gathered in the air-cooling channel to flow to generator 2 and diesel engine 3. The air flows through the outer periphery of generator 2 and diesel engine 3, fully absorbing the heat generated by the two during operation. The hot air after absorbing the heat enters the interior of cooling cover 6 under the driving force of fan 41 and the air pressure difference. Finally, it is discharged to the outside through the double air outlets 53 of the soundproof box 5 connected to cooling cover 6, completing the entire cooling cycle. This utility model adopts a dual air inlet design, which introduces outside cold air simultaneously through the air guide shroud 43 and the U-shaped air duct 44, significantly increasing the amount of cooling air. The dual air inlet path can avoid the problem of insufficient air intake when a single air inlet is blocked or blocked, ensuring the continuous operation of the cooling system. The structural design of the U-shaped air duct 44 can reduce air intake resistance and ensure that the airflow smoothly enters the air-cooling channel. With the driving force of the fan 41, it maintains a stable airflow circulation. The dual-sided air outlet 53 design accelerates the expulsion of hot air, avoids heat accumulation inside the soundproof enclosure 5, and further improves cooling efficiency.

[0017] In one embodiment, like Figure 5 As shown, the air guide shroud 43 is installed in the air box 42 at an angle, and its lower end is arc-shaped and extends into the air box 42. Several first air guide ports are provided on the air guide shroud 43 at equal intervals. An inclined air guide plate is installed at each of the several first air guide ports. The air guide shroud 43 is installed in the air box 42 at an inward angle of 2-5 degrees. The inward tilt of the air guide shroud 43 creates a slight deflection angle for the incoming cold air, reducing diffusion loss of airflow into the silent box 5 and ensuring that more cold air flows to the heat-generating components in the cooling shroud 6, thus improving heat exchange efficiency. The small-angle tilt design avoids airflow impact resistance caused by vertical or large-angle installation, allowing air to flow more smoothly in the channel formed by the air guide shroud 43 and the air box 42, reducing energy loss and ensuring that the driving force of the fan 41 is effectively converted into airflow energy. The arc-shaped lower end extends into the interior of the wind box 42, which can guide some of the airflow downwards, expand the airflow coverage area, and increase the heat exchange surface.

[0018] In one embodiment, Second air vents are provided on both sides of the air guide shroud 43 at the contact ends with the air box 42 to supplement the side cooling airflow and eliminate the cooling blind zone.

[0019] In one embodiment, The aforementioned air hood 44 has two second air inlets 52 corresponding to the soundproof box 5. A mesh protective plate is installed inside the first air inlet 51 and the second air inlet 52, and a detachable air filter is installed on the inner side of both the first air inlet 51 and the second air inlet 52. The two second air inlets 52 can correspond to the two sides of the U-shaped structure of the air hood 44, so that the outside air enters the air hood 44 more evenly, avoiding the airflow deviation inside the air hood caused by a single air inlet, ensuring that the upper airflow entering the air-cooling channel is stable and symmetrical, and blends more smoothly with the front airflow introduced by the air guide hood 43; the two second air inlets 52 cooperate with the first air inlet 51 to maximize the amount of cold air introduced; Air filters can filter out fine particles such as dust and sand from the air, purify the intake air, and protect the internal components of the equipment. They are designed to be detachable, so users can remove the filters for cleaning or replacement periodically.

[0020] In one embodiment, The cooling shroud 6 has an L-shaped cross-section, and its lower end extends obliquely to the lower end of the air outlet 53, which is located at the lower ends of both sides of the soundproof box 5. The lower end of the cooling shroud 6 extends at an angle to the lower end of the air outlet 53, which is located at the lower ends of both sides of the soundproof box 5, forming an inclined airflow and low-level exhaust path. Hot air has the characteristic of floating upwards, and the air outlet 53 is located at the lower ends of both sides. Together with the inclined lower end of the cooling shroud 6, it forms a forced path in which the rising hot air is obstructed, guided by the inclined surface to flow to a lower level, and discharged from the lower air outlet. This avoids the accumulation of hot air in the upper part of the soundproof box 5 and achieves uniform heat dissipation of the equipment.

[0021] In one embodiment, The aforementioned cooling cover 6 is provided in four pairs, symmetrically installed on both sides of the soundproof box 5. Correspondingly, the aforementioned air outlet 53 is provided in four pairs, and a mesh protective plate is installed inside the air outlet 53. Each cooling shroud 6 corresponds to an air outlet 53, forming multiple heat dissipation paths. This ensures that hot air from each zone can be quickly exhausted through its dedicated air outlet 53, reducing the mixing and retention of hot air inside the soundproof enclosure 5 and improving the targeting and efficiency of heat dissipation.

[0022] In one embodiment, The upper part of the aforementioned soundproof box 5 is provided with a left flip cover and a right flip cover. The left flip cover and the right flip cover are respectively hinged to the soundproof box 5, and the upper part of the air duct 44 is in contact with the lower surface of the left flip cover. When the left and right flaps are closed, they cover the upper part of the soundproof box 5, forming a complete closed top structure. The upper part of the air duct 44 contacts the lower surface of the left flap, ensuring that the outside air can be stably guided to the air-cooling channel by the air duct 44 after passing through the second air inlet 52. The left and right flaps are opened by hinge structure. At this time, the contact between the left flap and the upper part of the air duct 44 is released, and the air duct 44, the second air inlet 52 and the components inside the upper part of the soundproof box can be directly exposed, which is convenient for operators to carry out maintenance and cleaning.

[0023] In summary: This utility model discloses a high-efficiency cooled diesel generator set, which adopts a three-dimensional airflow circulation design with dual air intakes and dual-side exhausts. Cold air is introduced simultaneously through the first and second air intakes and precisely guided by the air guide shroud and U-shaped air duct, so that the airflow concentrates to cover the entire area of ​​the generator and diesel engine, eliminating cooling blind spots. With the design of L-shaped cooling shroud and four air outlets on both sides, hot air can be quickly discharged through independent paths, avoiding heat accumulation in the soundproof box and significantly improving heat exchange efficiency. Moreover, the dual air intake paths are backups for each other, ensuring stable operation of the cooling system. The soundproof enclosure forms a closed space, and the sealing design of the top left and right flip-top covers effectively blocks diesel engine combustion noise, fan airflow noise and mechanical vibration noise, reducing interference with the external environment; This utility model discloses a high-efficiency cooled diesel generator set, which achieves a synergistic improvement in cooling efficiency, noise reduction performance and maintenance convenience through multi-dimensional structural optimization.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The terms "front," "back," "left," and "right" used in the text are not specific and are mainly for more intuitive illustration of the technical solution, and do not constitute a limitation. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made according to the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A diesel generator set with high-efficiency cooling, characterized in that: Includes a base (1), a generator (2), a diesel engine (3), and an air-cooling mechanism (4); The generator (2) is mounted on the base (1) and connected to the diesel engine (3). The air-cooling mechanism (4) is mounted on the base (1) and located on the side of the diesel engine (3) away from the generator (2). A soundproof box (5) is installed on the base (1), forming a closed space with the base (1). The generator (2), diesel engine (3) and air-cooling mechanism (4) are all placed inside the soundproof box (5). The air-cooling mechanism (4) includes a fan (41) for generating cooling airflow, a wind box (42) placed around the fan (41), and an air guide shroud (43) installed on the wind box (42) and facing the fan (41). An air-cooling channel is formed between the air guide shroud (43) and the wind box (42), and the air guide shroud (43) is connected to the first air inlet (51) opened on the front side of the soundproof box (5). The air-cooling mechanism (4) also includes an air duct (44) installed on the upper end of the air box (42). The air duct (44) is U-shaped and its end is connected to the air-cooling channel. The air duct (44) is connected to the second air inlet (52) opened on the upper end of the soundproof box (5). The generator (2) and the diesel engine (3) are both equipped with cooling covers (6) installed on the base (1) and the cooling covers (6) are connected to the air outlets (53) on both sides of the soundproof box (5).

2. The diesel generator set with high-efficiency cooling according to claim 1, characterized in that: The air guide hood (43) is installed in the air box (42) at an angle, and its lower end is arc-shaped and extends into the air box (42). Several first air guide ports are provided on the air guide hood (43) at equal intervals, and an inclined air guide plate is installed at each of the several first air guide ports.

3. The high-efficiency cooled diesel generator set according to claim 1, characterized in that: A second air guide is provided at the contact end of the air guide shroud (43) and the air box (42) on both sides.

4. The high-efficiency cooled diesel generator set according to claim 1, characterized in that: The air intake hood (44) has two second air inlets (52) corresponding to the soundproof box (5). A mesh protective plate is installed inside the first air inlet (51) and the second air inlet (52), and a detachable air filter is installed on the inner side of both the first air inlet (51) and the second air inlet (52).

5. The high-efficiency cooled diesel generator set according to claim 1, characterized in that: The cooling cover (6) has an L-shaped cross-section and its lower end extends obliquely to the lower end of the air outlet (53), which is located at the lower ends of both sides of the soundproof box (5).

6. The diesel generator set with high-efficiency cooling according to claim 1, characterized in that: The cooling cover (6) has four parts, which are symmetrically installed on both sides of the soundproof box (5). Correspondingly, the air outlet (53) has four parts, and a mesh protective plate is installed inside the air outlet (53).

7. The diesel generator set with high-efficiency cooling according to claim 1, characterized in that: The upper end of the soundproof box (5) is provided with a left flip cover and a right flip cover. The left flip cover and the right flip cover are respectively hinged to the soundproof box (5), and the upper end of the air duct (44) is in contact with the lower surface of the left flip cover.

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