Air-cooled inverter generator

Abstract

The utility model relates to the field of power electronic equipment, in particular to an air-cooled inverter generator which comprises a starting assembly (1), a wind scooper (2) is arranged on the starting assembly (1), an air flow channel used for air circulation is formed in the wind scooper (2), and one end, far away from the starting assembly (1), of the wind scooper (2) is connected with an inverter (3). According to the utility model, the heat dissipation effect of the inverter can be greatly improved through small modification, so that the over-temperature protection hidden danger of the inversion IGBT with high wind temperature when a terminal product is used in a high-temperature environment is reduced. Meanwhile, the structure is simple, the modification cost is low, and the large-range popularization value is achieved.

Description

Technical Field

[0001] This utility model relates to the field of power electronic equipment, and in particular to an air-cooled inverter generator. Background Technology

[0002] With the continuous development of power electronics technology, inverters, as key devices for converting direct current (DC) to alternating current (AC), play a vital role in industrial automation, renewable energy generation, and grid regulation. Especially in generator systems, inverters are widely used to convert AC power generated by generators into DC power or other forms of electrical energy to meet diverse load demands. However, inverters generate a significant amount of heat during operation. If this heat is not dissipated effectively and promptly, it can lead to excessively high internal temperatures, affecting their efficiency, lifespan, and even posing safety hazards.

[0003] In existing technologies, the primary heat dissipation method for inverters is side-mounted air intake cooling. Side-mounted air intake cooling involves creating air intake vents on the side of the inverter, utilizing natural airflow from the external environment or the suction from an auxiliary fan for heat dissipation. This cooling method has the following problems in practical applications:

[0004] 1) Limited heat dissipation effect: The natural wind speed is low, and hot air is not easily expelled, resulting in low heat dissipation efficiency;

[0005] 2) Poor adaptability to high-temperature environments: In high-temperature environments, the external air temperature is high, further reducing the heat dissipation effect and easily leading to overheating of the inverter;

[0006] 3) Structural space constraints: The side-mounted air intake occupies the side space of the inverter, which may conflict with the layout of other components such as the starter assembly or oil tank, affecting the overall structural compactness.

[0007] 4) Safety hazards: The side-mounted air intake is low and easily affected by the external environment, such as rain and dust, which may cause the inverter to become damp and dusty, affecting the reliability and safety of the equipment.

[0008] In summary, existing technologies still have many shortcomings in inverter heat dissipation methods, especially in high-temperature environments. Insufficient heat dissipation, decreased inverter efficiency, and safety hazards seriously affect the reliability and performance of the equipment. Therefore, those skilled in the art are dedicated to developing an air-cooled inverter generator that can effectively improve inverter heat dissipation and adapt to high-temperature environments. Utility Model Content

[0009] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this utility model is to provide an air-cooled inverter generator.

[0010] To achieve the above objectives, this utility model provides an air-cooled inverter generator, including a starting assembly, on which a wind guide shroud is provided, and an air flow channel for air circulation is formed inside the wind guide shroud. An inverter is connected to the end of the wind guide shroud away from the starting assembly.

[0011] Preferably, the bottom of the air guide shroud is provided with a first connecting pipe, which is connected to the air guide shroud.

[0012] Preferably, the starting assembly is provided with a second connecting pipe, which is connected to the starting assembly.

[0013] Preferably, the end of the second connecting pipe away from the starting assembly is connected to the end of the first connecting pipe away from the air guide shroud, and the air guide shroud is connected to the starting assembly through the first connecting pipe and the second connecting pipe.

[0014] Preferably, the air guide shroud is conical.

[0015] Preferably, the top of the air guide shroud is provided with an arc-shaped edging, and the arc-shaped edging is provided with connecting lugs.

[0016] Preferably, the air guide cover is wrapped with heat insulation material.

[0017] The beneficial effects of this utility model are: it can significantly improve the heat dissipation effect of the inverter with minor modifications, thereby reducing the risk of overheating of the inverter IGBTs due to excessive air temperature when the end product is used in a high-temperature environment. At the same time, this application has a simple structure, low modification cost, and wide applicability. Attached Figure Description

[0018] Figure 1 This is an assembly diagram of a specific embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the air guide cover in a specific embodiment of this utility model.

[0020] Figure 3 This is a side view of the air guide cover in a specific embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram of the starting assembly in a specific embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the first connecting pipe in a specific embodiment of this utility model.

[0023] Figure 6 This is an overall assembly diagram of a specific embodiment of the present invention.

[0024] Figure 7yes Figure 6 A magnified view of a portion of point A in the middle.

[0025] 1. Starting assembly; 1a. Second connecting pipe; 2. Air guide cover; 2a. First connecting pipe; 2b. Arc-shaped edging; 2c. Connecting lug; 3. Inverter; 4. Oil tank. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] like Figure 1 As shown, an air-cooled inverter generator includes a starting assembly 1. The starting assembly 1 is provided with a forced air-cooling duct for motor heat dissipation (the specific working method and heat dissipation principle are not related to the utility model of this application, so they will not be described in detail here) for cooling the starting assembly 1.

[0028] like Figure 2-3 As shown, the starting assembly 1 is equipped with an air guide shroud 2. In this embodiment, the air guide shroud 2 has a conical structure with a large opening at one end and a small opening at the other end. In other embodiments, a horn-shaped opening design can also be adopted. This design can effectively concentrate the air volume and prevent the airflow from being scattered and insufficient. An air flow channel for air circulation is formed inside the air guide shroud 2, and the cooling air in the forced air cooling heat dissipation air duct can flow along the air flow channel inside the air guide shroud 2.

[0029] An inverter 3 is connected to the end of the air guide shroud 2 furthest from the starting assembly 1. The inverter 3 converts the DC power generated by the generator into AC power. In this embodiment, the inverter 3 is positioned above the starting assembly 1, and the two are connected by the air guide shroud 2. Compared with the side-mounted air intake (external ambient air cooling) structure used in the prior art, the overall volume of this design, which positions the inverter 3 above the starting assembly 1, is reduced by 1 / 3. Furthermore, positioning the inverter 3 above the starting assembly 1 also has the advantages of being less prone to accidental touch and safer during rain tests. Specifically, in this embodiment, an oil tank 4 is provided on top of the inverter 3. The inverter 3 is located between the starting assembly 1 and the oil tank 4. The oil tank 4 provides rain protection and prevents accidental touch for the inverter 3.

[0030] like Figure 4-5As shown, the bottom of the air guide shroud 2 is provided with a first connecting pipe 2a, which communicates with the air guide shroud 2. The bottom edge of the first connecting pipe 2a is an arc-shaped edge, a design that facilitates its fit against the outer wall of the starting assembly 1. The starting assembly 1 is provided with a second connecting pipe 1a, which communicates with the starting assembly 1. The end of the second connecting pipe 1a away from the starting assembly 1 is inserted into the end of the first connecting pipe 2a away from the air guide shroud 2. In this embodiment, the width of the end of the first connecting pipe 2a away from the air guide shroud 2 is greater than the width of the end of the second connecting pipe 1a away from the starting assembly 1 to facilitate their insertion. The air guide shroud 2 communicates with the starting assembly 1 through the first connecting pipe 2a and the second connecting pipe 1a. The cooling air in the starting assembly 1 passes sequentially through the second connecting pipe 1a, the first connecting pipe 2a, and the air guide shroud 2 to cool the inverter 3.

[0031] In this embodiment, the top of the air guide shroud 2 is provided with an arc-shaped edging 2b. By providing the arc-shaped edging 2b to wrap around the edge of the inverter 3, the inverter 3 is protected from accidental contact while maximizing the cooling effect and reducing the escape of cooling air. The arc-shaped edging 2b inside the air guide shroud 2 is provided with connecting lugs 2c, which are used to fix the air guide shroud 2 to the inverter 3.

[0032] The air guide shroud 2 is wrapped with heat insulation material. In this embodiment, the heat insulation material is heat insulation cotton; in other embodiments, heat insulation foam, phenolic board, rock wool, and glass wool, or similar products, can also be used. Wrapping the air guide shroud 2 with heat insulation material can effectively prevent the self-dissipated high-temperature heat from the engine from being transferred to the inverter 3, thus affecting its performance efficiency.

[0033] like Figure 6-7 As shown, during use, the cooling air in the forced air cooling duct of the motor passes sequentially through the second connecting pipe 1a, the first connecting pipe 2a, and the air guide shroud 2 before cooling the inverter 3. This application significantly improves the heat dissipation effect of the inverter 3 with minor modifications, thereby reducing the risk of overheating of the inverter IGBTs due to excessive air temperature when the end product is used in high-temperature environments. Testing shows that this application can still operate normally at an ambient temperature of 40℃, and its overall efficiency is improved by more than 10% compared to existing technologies.

[0034] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An air-cooled inverter generator, characterized in that: It includes a starter assembly (1), on which a wind deflector (2) is provided. An air flow channel for air circulation is formed inside the wind deflector (2), and an inverter (3) is connected to the end of the wind deflector (2) away from the starter assembly (1).

2. The air-cooled inverter generator as described in claim 1, characterized in that: The bottom of the air guide shroud (2) is provided with a first connecting pipe (2a), which is connected to the air guide shroud (2).

3. The air-cooled inverter generator as described in claim 2, characterized in that: The starting assembly (1) is provided with a second connecting pipe (1a), which is connected to the starting assembly (1).

4. The air-cooled inverter generator as described in claim 3, characterized in that: The end of the second connecting pipe (1a) away from the starting assembly (1) is connected to the end of the first connecting pipe (2a) away from the air guide shroud (2). The air guide shroud (2) is connected to the starting assembly (1) through the first connecting pipe (2a) and the second connecting pipe (1a).

5. The air-cooled inverter generator as described in claim 1, characterized in that: The air guide shroud (2) is conical.

6. The air-cooled inverter generator as described in any one of claims 1-5, characterized in that: The top of the air guide shroud (2) is provided with an arc-shaped edging (2b), and the arc-shaped edging (2b) is provided with connecting lugs (2c).

7. The air-cooled inverter generator as described in claim 6, characterized in that: The air guide cover (2) is wrapped with heat insulation material.

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