Generator set with inverter heat dissipation structure

Abstract

The utility model discloses a generator set with an inverter heat dissipation structure, which comprises an engine and an inverter, the engine is provided with a fan cover, the fan cover is provided with an air outlet, the inverter is arranged on the outer side of the air outlet of the fan cover, and one side of the inverter facing the air outlet is provided with a plurality of heat dissipation fins. The air flow generated by the fan of the engine can be used for forcibly radiating the inverter to strengthen the radiating of the inverter, and the service life of components in the module is prolonged by reducing the working temperature of the inverter, so that the inversion efficiency of the module can be improved, the power generation power can be improved, the structures such as air supply pipelines are reduced, and the cost is reduced. And parts of the generator set are simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, and more specifically, to a generator set with an inverter heat dissipation structure. Background Art

[0002] The inverter is one of the important components in the variable frequency generator set. During the operation of the generator, the inverter will generate a lot of heat, and there are great requirements for the heat dissipation of the inverter, especially when the generator is working continuously for a long time. If the temperature of the inverter is too high, it will trigger the automatic protection function and cause the engine to stop working. Therefore, the heat dissipation of the inverter is an important structure in the generator, which directly affects the continuous working time of the variable frequency generator.

[0003] In current generators, an independent heat dissipation structure is installed at the position of the inverter, with an independent fan and air duct. The inverter is cooled by blowing on the surface of the inverter, which can effectively cool the inverter. However, the independent heat dissipation power structure will increase the components of the wind turbine, resulting in a larger size of the generator, which is not conducive to the miniaturization of the generator.

[0004] In addition, in some generator sets, pipelines will be set at the fan of the engine set to draw out part of the airflow and guide it to the vicinity of the inverter through the pipeline. The inverter can then be cooled with the help of the engine fan, which can simplify the separate power structure for inverter heat dissipation. However, the air-inducing pipeline structure will occupy a certain volume.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a generator set with an inverter heat dissipation structure, which can dissipate heat from the inverter with the help of wind from an engine fan and simplifies the heat dissipation structure.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A generator set with an inverter heat dissipation structure comprises an engine and an inverter, wherein the engine is provided with a fan cover, the fan cover is provided with an air outlet, the inverter is arranged outside the air outlet of the fan cover, and a plurality of heat sinks are provided on the side of the inverter facing the air outlet.

[0009] The utility model is further configured that an air guide piece is arranged on the outer side of the air outlet, and the air guide piece is arranged at an angle to guide the air toward the heat sink.

[0010] The utility model is further configured such that the air outlet is in a grid-like structure.

[0011] The utility model is further configured such that a heat dissipation channel is formed between adjacent heat dissipation fins, and the air outlet is opposite to the heat dissipation channel.

[0012] The utility model is further configured such that the heat sinks are distributed parallel to each other, and the direction of the heat dissipation channel and the orientation of the air guide plate are adapted to each other.

[0013] The utility model is further configured that two ends of the heat dissipation channel are open.

[0014] The utility model is further configured that fan blades are arranged in the fan cover, and the air outlet is located at a circumferential outer side of the fan cover.

[0015] The utility model is further configured such that the air outlet is located on the upper side of the fan cover, the inverter is located on the upper side of the air outlet, and the heat sink is located on the lower side of the inverter.

[0016] In summary, the utility model has the following beneficial effects:

[0017] By directly opening an air outlet on the outside of the engine's fan cover, the position of the air outlet is opposite to the position of the inverter heat sink. The air outlet can directly blow the inverter, take away the heat of the heat sink, and cool the inverter. The heat dissipation of the inverter does not require an additional power structure, and does not require an air supply duct, which simplifies the heat dissipation structure of the inverter and is conducive to the miniaturization of the overall structure of the engine group. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a generator set with an inverter heat dissipation structure in this embodiment;

[0019] Figure 2 is a cross-sectional view of a generator set with an inverter heat dissipation structure in this embodiment;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 Schematic diagram of the structure of the engine and inverter in this embodiment;

[0022] Figure 5 It is a structural schematic diagram of the engine in this embodiment;

[0023] Figure 6 Schematic diagram of the structure of the inverter in this embodiment;

[0024] Figure 7FIG. 1 is a schematic diagram of the structure of one side of the heat sink of the inverter in this embodiment.

[0025] Figure numerals: 1. engine; 2. fan cover; 21. air outlet; 22. air guide vane; 3. inverter; 31. heat sink; 32. heat dissipation channel; 33. connecting block; 4. frame; 5. fan blade. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0027] This embodiment discloses a generator set with an inverter heat dissipation structure, referring to Figure 1-7 As shown, the generator set is supported by a frame 4, and components such as an engine 1 and an inverter 3 are installed inside the frame 4. The engine 1 is provided with a fan cover 2, and a fan blade 5 is installed inside the fan cover 2. The fan blade 5 is driven by the rotating shaft of the generator, and can supply air to the engine 1 during the operation of the engine 1, playing the role of cooling and accelerating the intake of air.

[0028] An air outlet 21 is provided on the outside of the fan cover 2, more specifically, the air outlet 21 is located at the circumferential outer side of the fan cover 2. The inverter 3 is installed on the outside of the fan cover 2 and opposite to the position of the air outlet 21, and a plurality of heat sinks 31 are provided on the side of the inverter 3 facing the air outlet 21. When the fan blades 5 rotate to deliver air, a portion of the wind will be blown outward from the air outlet 21 of the fan cover 2, sweeping the surface of the heat sink 31 of the inverter 3, which can take away the heat of the heat sink 31, thereby playing a role in cooling the inverter 3.

[0029] A connection block 33 is fixedly connected to the outer side of the inverter 3, and the connection block 33 can be installed on the frame 4 of the unit by bolts or other connecting parts to achieve the installation and fixation of the inverter 3. The inverter 3 is connected to the fan cover 2 of the engine 1 without a pipeline, and there is no need for pipeline air supply, which can simplify the structure of the engine, and the vibration generated by the engine 1 when working will not be directly transmitted from the pipeline to the inverter 4, which can improve the working stability of the inverter 4.

[0030] In this embodiment, the inverter 3 is installed on the upper side of the fan cover 2, and correspondingly, the air outlet 21 is also located on the upper side of the fan cover 2, and the heat sink 31 is located on the lower side of the inverter 3, facing the direction of the air outlet 21, so that the wind blown out of the air outlet 21 can be blown into the heat dissipation channel 32 between the heat sink 31. Alternatively, the inverter 3 can also be installed on the side of the fan cover 2, and correspondingly, the air outlet 21 will also be opened in the corresponding direction.

[0031] The heat sinks 31 are generally arranged in parallel, and a heat dissipation channel 32 is formed between adjacent heat sinks 31, and both ends of the heat dissipation channel 32 are open. The air outlet 21 corresponds to the middle section of the heat dissipation channel 32, and the wind blown out of the air outlet 21 can be blown into the heat dissipation channel 32, and then flow out along the two ends of the heat dissipation channel 32, so as to cool the heat sink 31. When the cooling wind flows through the heat dissipation channel 32, it can have a longer contact area with the heat sink 31, thereby improving the heat dissipation effect.

[0032] The air outlet 21 is in a grid-like structure, consisting of a plurality of holes, which can not only meet the requirements of the air outlet volume, but also prevent debris from entering the air outlet 21, thereby achieving a protective effect.

[0033] An air guide fin 22 is arranged on the outside of the air outlet 21. The air guide fin 22 is arranged at an angle and extends to the outside of the air outlet 21, so as to guide the airflow. The air guide fin 22 is inclined toward the heat sink 31, so that the airflow blown out of the air outlet 21 can be directed toward the heat sink 31, thereby reducing airflow loss. The direction of the air guide fin 22 is adapted to the direction of the heat sink 31, that is, the airflow flowing out of the air outlet 21 will be output along the direction of the air guide fin 22 after the guiding effect of the air guide fin 22; the direction of the air guide fin 22 is adapted to the direction of the heat dissipation channel 32, so that the output airflow can smoothly enter the air guide channel 32, and can flow through the heat sink 31 and the back of the inverter 3 along the heat dissipation channel 32 to take away the heat, thereby playing a role in heat dissipation and cooling.

[0034] Specific reference Figure 6 , Figure 7 As shown, the heat sink 31 of the inverter 3 is arranged at an angle to the axial direction of the fan blade 5. In the direction of the rotation axis of the fan blade 5, the width of the air outlet 21 is relatively narrow, while the heat sink 31 is relatively long, and the position directly facing the air outlet 21 is roughly located in the middle of the inverter 3. The air guide fins 22 of the air outlet 21 are in an inclined structure, corresponding to the direction of the inclined heat sink 31, so that the inclined airflow blown out of the air outlet 21 can directly enter the heat dissipation channel 32 between the heat sink 31, thereby improving the heat dissipation efficiency of the heat sink 31 and ensuring that the inverter 3 can be stably cooled.

[0035] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A generator set with an inverter heat dissipation structure, comprising an engine (1) and an inverter (3), wherein the engine (1) is provided with a fan cover (2), characterized in that: The fan cover (2) is provided with an air outlet (21), the inverter (3) is arranged outside the air outlet (21) of the fan cover (2), and a plurality of heat sinks (31) are provided on a side of the inverter (3) facing the air outlet (21).

2. The generator set with an inverter heat dissipation structure according to claim 1, characterized in that: An air guide plate (22) is arranged outside the air outlet (21); the air guide plate (22) is arranged at an angle and is used to guide air toward the heat sink (31).

3. The generator set with an inverter heat dissipation structure according to claim 2, characterized in that: The air outlet (21) is in a grid-like structure.

4. The generator set with an inverter heat dissipation structure according to claim 2, characterized in that: A heat dissipation channel (32) is formed between adjacent heat dissipation fins (31), and the air outlet (21) is opposite to the heat dissipation channel (32).

5. The generator set with the inverter heat dissipation structure according to claim 4, characterized in that: The heat sinks (31) are distributed in parallel with each other, and the direction of the heat dissipation channel (32) is adapted to the orientation of the air guide plate (22).

6. The generator set with an inverter heat dissipation structure according to claim 4, characterized in that: Both ends of the heat dissipation channel (32) are open.

7. The generator set with an inverter heat dissipation structure according to claim 1, characterized in that: The fan cover (2) is provided with fan blades (5), and the air outlet (21) is located at the circumferential outer side of the fan cover (2).

8. The generator set with an inverter heat dissipation structure according to claim 1, characterized in that: The air outlet (21) is located on the upper side of the fan cover (2), the inverter (3) is located on the upper side of the air outlet (21), and the heat sink (31) is located on the lower side of the inverter (3).

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