A generator

Abstract

This invention relates to a generator powered by an internal combustion engine, and discloses a generator including a stator and rotor unit, an engine, a controller, and a muffler. It also includes a cooling shroud with a first air inlet, inside which a cooling fan is disposed. The cooling fan is linked to the engine. The cooling shroud has a first air outlet facing the muffler and a second air outlet facing the controller. This invention solves the problem of power reduction that often occurs in existing generators.

Description

Technical Field

[0001] This invention relates to a generator powered by an internal combustion engine. Background Technology

[0002] Existing generators include stator and rotor units for generating current, an engine with a crankcase and cylinders for driving the stator and rotor units, a fuel tank for supplying fuel to the engine, an exhaust system with a muffler, a cooling system with a fan, and a controller for controlling current and voltage. These components are integrated onto a frame in a specific spatial arrangement to form the existing generator. However, with increasing demands on generator power, it has been found that higher-power generators are prone to power reduction during operation, especially in high-temperature environments. Summary of the Invention

[0003] The purpose of this invention is to provide a generator to solve the problem of power reduction that occurs easily in existing generators.

[0004] To achieve the above objectives, the basic solution of the present invention provides a generator, including a stator and rotor unit, an engine, a controller and a muffler, and further including a cooling shroud with a first air inlet, wherein a cooling fan is disposed inside the cooling shroud and the cooling fan is linked to the engine, and the cooling shroud is provided with a first air outlet facing the muffler and a second air outlet facing the controller.

[0005] The beneficial effect of this basic solution is that, compared with the existing technology, the generator will not experience a power reduction problem when the generator power is high or when the generator is used in a high-temperature environment.

[0006] To further ensure the stability of generator power, the cooling fan includes a first induced draft fin group and a second induced draft fin group. A partition plate is provided between the first induced draft fin group and the second induced draft fin group. A second air inlet is provided on the side of the cooling air guide shroud away from the stator and rotor units. The first air inlet and the second air inlet are located on both sides of the partition plate, and the first air outlet and the second air outlet are located on both sides of the partition plate, respectively.

[0007] To further ensure the stability of the generator power, the cooling air guide shroud is located on one side of the stator and rotor unit, and the first air inlet is set close to the stator and rotor unit.

[0008] To further ensure the stability of generator power, the cooling shroud is located on the side of the stator and rotor unit away from the engine, and the first air inlet is located between the stator and rotor unit and the engine. The airflow generated when air enters through the first air inlet via the cooling shroud cools the stator and rotor unit, and this airflow then cools the muffler, thus achieving simultaneous cooling of both the stator and rotor unit and the muffler, improving the generator's cooling efficiency.

[0009] To further ensure the stability of generator power, the controller is located above the cooling shroud, and the muffler is located to the horizontal side of the cooling shroud. This arrangement ensures that the airflow after cooling the controller flows towards the muffler, further cooling it and improving its cooling efficiency.

[0010] Furthermore, both the first and second air-expelling fin groups are statically connected to the partition plate, and a gap of 3-7 mm is provided between the partition plate and the inner wall of the cooling air guide shroud. This arrangement helps to reduce the mutual interference between the airflow generated by the first and second air-expelling fin groups, thereby improving the cooling effect.

[0011] Furthermore, a guide slope is fixed on the side of the second air inlet near the muffler. This arrangement helps to reduce the impact of the muffler on the airflow at the second air inlet.

[0012] Furthermore, a third air outlet facing the muffler is provided on the side of the cooling air guide shroud located away from the stator and rotor units. This arrangement allows the airflow from the third outlet to cool the muffler. Simultaneously, the airflow from the third outlet forms a barrier between the muffler and the inclined air guide surface, preventing heat transfer from the muffler to the second air inlet. This avoids hot air entering through the second air inlet, thereby simultaneously improving the cooling effect on both the controller and the muffler.

[0013] Furthermore, a cooling fan for dissipating heat from the engine is installed on the side of the engine away from the stator and rotor unit. With this arrangement, the airflow generated by the cooling fan dissipates heat from the engine before entering the cooling shroud from the first air inlet located between the stator and rotor unit and the engine. This creates a synergistic effect between the cooling fan and the air shroud, further improving the cooling effect of the generator and enabling the generator to better adapt to high-power or high-temperature environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an embodiment of the generator of the present invention;

[0015] Figure 2for Figure 1 Schematic diagram showing the distribution of the central controller, cooling fan shroud, and muffler;

[0016] Figure 3 for Figure 2 A schematic diagram of the distribution of the central controller, cooling fan shroud, and muffler from the left view.

[0017] Figure 4 for Figure 1 A schematic diagram of the cooling fan. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method:

[0019] The reference numerals in the accompanying drawings include: frame 1, oil tank 2, controller 3, cooling air guide shroud 4, second air inlet 41, second air outlet 42, air guide slope 43, first air outlet 44, first air inlet 45, third air outlet 46, silencer 5, stator and rotor unit 6, rotor 61, cooling fan 7, first air duct fin assembly 71, second air duct fin assembly 72, partition plate 73, cylinder 8, crankcase 9, cooling fan 10, and cooling air guide shroud 11.

[0020] The basic implementation examples are as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown: A generator includes a frame 1. A stator / rotor unit 6 and an engine are fixed to the lower part of the frame 1. The crankshaft of the engine is connected to the rotor 61 of the stator / rotor unit 6, thereby enabling the engine to drive the rotor 61 of the stator / rotor unit 6 to rotate. An oil tank 2 is fixed to the top of the frame 1. A cooling duct 11 is installed on one side of the engine. In this embodiment, the cooling duct 11 is preferably located on the side of the engine away from the stator / rotor unit 6. A cooling fan 10 for cooling the crankcase 9 and cylinder 8 of the engine is provided inside the cooling duct 11. The cooling fan 10 is connected to the crankshaft of the engine. Specifically, by providing cooling vents on the cooling duct 11 facing the crankcase 9 and cylinder 8, the airflow generated by the cooling fan 10 cools the crankcase 9 and cylinder 8 through the cooling vents.

[0021] A cooling shroud 4 is provided on one side of the stator / rotor unit 6. In this embodiment, the cooling shroud 4 is preferably located on the side of the stator / rotor unit 6 away from the engine. A first air inlet 45 is provided on the cooling shroud 4, located between the stator / rotor unit 6 and the engine. A cooling fan 7 for cooling the stator / rotor unit 6 is provided inside the cooling shroud 4. The cooling fan 7 is connected to the rotor 61 of the stator / rotor unit 6, thereby realizing the linkage between the cooling fan 7 and the crankshaft of the engine. Of course, other transmission mechanisms can also be used to realize the linkage between the cooling fan 7 and the crankshaft. A muffler 5 of the exhaust system is installed on the frame 1. The muffler 5 is located on the horizontal side of the cooling shroud 4. A first air outlet 44 is provided on the cooling shroud 4 facing the muffler 5. In this embodiment, the first air outlet 44 is preferably arranged radially along the cooling shroud 4.

[0022] A controller 3 for controlling current and voltage is also installed on the frame 1. In this embodiment, the controller 3 is preferably located above the cooling duct 4. The controller 3 is selected from one or both of the inverter controller and the voltage regulator controller. The cooling duct 4 is provided with a second air outlet 42 facing the controller 3. The second air outlet 42 is located on the side of the cooling duct 4 away from the stator and rotor unit 6 and is arranged radially along the cooling duct 4. The side of the cooling duct 4 away from the stator and rotor unit 6 is also provided with a second air inlet 41. The side of the second air inlet 41 near the silencer 5 is provided with a guide slope 43. The cooling fan 7 includes a first air-driving fin assembly 71 and a second air-driving fin assembly 72. A partition plate 73 is provided between the first air-driving fin assembly 71 and the second air-driving fin assembly 72. A first air inlet 45 and a second air inlet 41 are located on both sides of the partition plate 73, and a first air outlet 44 and a second air outlet 42 are located on both sides of the partition plate 73. This allows the first air-driving fin assembly 71 to cooperate with the first air inlet 45 and the first air outlet 44 to generate airflow to cool the muffler 5, and the second air-driving fin assembly 72 to generate airflow to cool the controller 3. In this embodiment, the first air-driving fin assembly 71 and the second air-driving fin assembly 72 are respectively connected and fixed to the partition plate 73. There is a gap of 3-7 mm between the edge of the partition plate 73 and the inner wall of the cooling air guide shroud 4, so that the airflow generated by the first air-driving fin assembly 71 and the second air-driving fin assembly 72 will not interfere with each other. A third air outlet 46 facing the silencer 5 is provided on the side of the cooling air guide shroud 4 located away from the stator and rotor unit on the partition plate.

[0023] The specific implementation process is as follows: When the generator is working, the crankshaft of the engine drives the cooling fan 10 to rotate, thereby generating airflow towards the crankcase 9 and cylinder 8 of the engine, thus achieving heat dissipation for the crankcase 9 and cylinder 8. The crankshaft drives the rotor 61 of the stator-rotor unit 6 to rotate, and the rotor 61 drives the cooling fan 7 to rotate. When the first air intake fin assembly 71 of the cooling fan 7 rotates, the first air inlet 45 of the cooling air guide shroud 4 draws air from the gap between the engine and the stator-rotor unit 6 and discharges it from the first air outlet 44, thereby achieving cooling of the stator-rotor unit 6 and the muffler 5. When the second air intake fin assembly 72 of the cooling fan 7 rotates, the second air inlet 41 of the cooling air guide shroud 4 draws air from the side away from the stator-rotor unit 6 and discharges it from the second air outlet 42, thereby cooling the controller 3. The airflow after cooling the controller 3 also flows to the muffler 5, thereby providing auxiliary cooling for the muffler 5. At the same time, a portion of the air entering through the second air inlet 41 is discharged from the third air outlet 46 under the action of the second air fin assembly 72, thus cooling the muffler 5 and enhancing the cooling effect of the muffler 5.

[0024] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A generator, comprising a stator and rotor unit, an engine, a controller, and a muffler, characterized in that: It also includes a cooling air guide shroud with a first air inlet, a cooling fan is provided inside the cooling air guide shroud, the cooling fan is linked to the engine, and the cooling air guide shroud is provided with a first air outlet facing the muffler and a second air outlet facing the controller. The cooling fan includes a first air-driving fin group and a second air-driving fin group. A partition plate is provided between the first air-driving fin group and the second air-driving fin group. A second air inlet is provided on the side of the cooling air guide shroud away from the stator and rotor unit. The first air inlet and the second air inlet are located on both sides of the partition plate, and the first air outlet and the second air outlet are located on both sides of the partition plate, respectively. The cooling air guide shroud is located on one side of the stator and rotor unit, and the first air inlet is located close to the stator and rotor unit; The cooling air duct is located on the side of the stator and rotor unit away from the engine, and the first air inlet is located between the stator and rotor unit and the engine.

2. The generator according to claim 1, characterized in that: The second air outlet is arranged radially along the cooling air guide shroud.

3. The generator according to claim 2, characterized in that: The first air outlet is arranged radially along the cooling air guide shroud.

4. The generator according to claim 1, characterized in that: The first air outlet is arranged radially along the cooling air guide shroud.

5. The generator according to any one of claims 1-4, characterized in that: The controller is located above the cooling duct, and the muffler is located on the horizontal side of the cooling duct.

6. The generator according to any one of claims 1-4, characterized in that: Both the first and second air-guiding fin groups are statically connected to the partition plate. A gap of 3-7 mm is provided between the partition plate and the inner wall of the cooling air guide shroud.

7. The generator according to any one of claims 1-4, characterized in that: The second air inlet is fixed with an air guide slope on the side near the silencer.

8. The generator according to claim 7, characterized in that: The cooling air guide shroud has a third air outlet facing the silencer on the side of the separator plate away from the stator and rotor unit.

9. The generator according to claim 1, 2, 3, 4 or 8, characterized in that: The controller is an inverter controller and / or a voltage regulator controller.

10. The generator according to claim 1, 2, 3, 4 or 8, characterized in that: A cooling fan for cooling the engine is installed on the side of the engine away from the stator and rotor unit.

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