Heat dissipation structure of generator inverter and generator set

Abstract

The heat dissipation structure comprises an inverter body and a wind scooper, one side of the wind scooper is open, the other side of the wind scooper is provided with an air inlet, at least part of the inverter body is arranged in the wind scooper, and one side, facing the air inlet, of the inverter body is provided with a plurality of heat dissipation fins. According to the utility model, the air flow generated by the fan of the engine can be used for carrying out forced heat dissipation on the inverter to strengthen the heat dissipation 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, and the power generation power can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, and more specifically, to a heat dissipation structure of a generator inverter, and also to a generator set with the 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] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a generator inverter heat dissipation structure, which can dissipate the heat of the inverter by the airflow generated by the engine fan, saves the inverter heat dissipation structure, simplifies the engine structure, and is conducive to reducing the volume size of the engine.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a generator inverter heat dissipation structure, including an inverter body and an air guide cover, one side of the air guide cover is open, and an air inlet is arranged on the other side, at least a part of the inverter body is arranged in the air guide cover, and a plurality of heat sinks are arranged on the side of the inverter body facing the air inlet.

[0007] The utility model is further configured to further include a fan cover, an air outlet is provided on the outer side of the fan cover, and the air outlet is communicated with the air inlet.

[0008] The utility model is further configured that an extension tube 1 is provided at the air outlet, and an extension tube 2 is provided at the air inlet, and the extension tube 1 and the extension tube 2 are flexibly connected to each other.

[0009] The utility model is further configured that the extension tube 1 and the extension tube 2 are sleeved and connected to each other, and a buffer pad is provided at the connection between the extension tube 1 and the extension tube 2.

[0010] The utility model is further configured such that the air guide cover includes a bottom plate and a plurality of side enclosures, each of the side enclosures is fixedly connected to the bottom plate, an installation space is formed between each of the side enclosures, and at least a portion of the inverter body is disposed in the installation space.

[0011] The utility model is further configured such that a gap is formed between the side enclosure and the edge of the inverter body.

[0012] The utility model is further configured such that a gap is formed between adjacent side enclosures; a connecting block is fixedly connected to the inverter body, the connecting block extends out of the air guide cover from the gap, and the connecting block is fixedly connected to the frame of the engine through a connecting frame.

[0013] The utility model is further configured as follows: the side enclosure is provided with four, the number of the notches is provided with four, and the four notches are respectively located on two opposite sides of the air guide cover; the number of the connection blocks of the inverter is four, and they correspond one to one to the four notches.

[0014] The utility model is further configured such that the heat sinks are distributed in parallel, and heat dissipation channels are formed between adjacent heat sinks.

[0015] The utility model also provides a generator set, including a frame, an engine and the engine inverter heat dissipation structure as described above, wherein the fan cover is arranged on the engine, the inverter body and the air guide cover are arranged on the side of the engine, the air inlet is arranged on the side of the air guide cover facing the engine, and the side of the air guide cover is open facing away from the engine.

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

[0017] By setting an opening on the outside of the fan cover of the engine, the wind guide cover of the inverter is connected to the opening, so that the airflow generated by the engine fan can be led out, and the inverter is forced to dissipate heat, which strengthens the heat dissipation of the inverter. By reducing the operating temperature of the inverter, the service life of the components in the module is increased, and the inverter efficiency of the module can be improved, and the power generation can be increased. During the heat dissipation process, the airflow flows out from the fan cover of the engine, flows outward, passes through the air inlet into the wind guide cover, flows through the heat sink of the inverter body in the wind guide cover, and finally flows out from the wind guide cover, taking away the heat of the inverter body to achieve heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a generator set in this embodiment;

[0019] Figure 2 Schematic diagram of a heat dissipation structure of a generator inverter in this embodiment;

[0020] Figure 3The structure of the wind guide cover and the inverter body in this embodiment is schematically shown. Figure 1 ;

[0021] Figure 4 The structure of the wind guide cover and the inverter body in this embodiment is schematically shown. Figure 2 ;

[0022] Figure 5 The structure of the wind guide cover and the inverter body in this embodiment is schematically shown. Figure 3 .

[0023] Figure numerals: 1. engine; 2. fan cover; 21. air outlet; 211. extension pipe one; 3. air guide cover; 31. air inlet; 311. extension pipe two; 32. notch; 301. bottom plate; 302. side enclosure; 4. inverter body; 41. heat sink; 42. connecting block; 5. screw; 6. connecting frame; 7. frame; 8. buffer sleeve. DETAILED DESCRIPTION

[0024] 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.

[0025] This embodiment discloses a heat dissipation structure of a generator inverter. Figure 1-Figure 5 As shown, it includes an inverter body 4 and an air guide cover 3, one side of the air guide cover 3 is open, and the other side of the air guide cover 3 is provided with an air inlet 31, and the air inlet 31 and the open side are respectively located on both sides of the air guide cover 3.

[0026] At least part of the inverter body 4 is disposed in the air guide cover 3 , most of the inverter body 4 is located in the air guide cover 3 , and part of the inverter body 4 may protrude from the air guide cover 3 , so as to protect the inverter body 4 .

[0027] A plurality of heat sinks 41 are arranged on one side of the inverter body 4, and the heat sinks 41 are arranged in parallel, and a heat dissipation channel is formed between adjacent heat sinks 41. When the inverter body 4 is installed, one side of the heat sink 41 of the inverter body 4 faces the inner side of the air guide cover 3, and the inverter body 4 is fixed in the air guide cover 3 by screws 5.

[0028] The heat dissipation structure of the generator inverter also includes a fan cover 2, which is installed on the outside of the fan blades of the engine 1, and an air outlet 21 is opened on the outside of the fan cover 2. When the engine 1 is working, the fan blades in the fan cover 2 rotate, and air flows out at the air outlet 21. The air outlet 21 is connected to the air inlet 31, and the airflow output through the air outlet 21 ventilates and dissipates heat for the inverter body 4.

[0029] Reference Figure 2 As shown, the air outlet 21 is provided with an extension pipe 1 211, which forms an integrated structure with the fan cover 2; the air inlet 31 is provided with an extension pipe 2 311, which forms an integrated structure with the air guide cover 3. The extension pipe 1 211 and the extension pipe 2 311 are connected to each other, so that the air outlet 21 and the air inlet 31 can be connected to each other to form an airflow guide structure, which can guide the airflow in the fan cover 2 into the air guide cover 3, and then ventilate and dissipate heat for the inverter body 4.

[0030] Furthermore, a flexible connection structure is adopted between the extension tube 1 211 and the extension tube 2 311 to prevent the vibration generated when the engine 1 is working from having an adverse effect on the inverter body 4. Specifically, a buffer sleeve 9 can be installed at the connection between the extension tube 1 211 and the extension tube 2 311. The buffer sleeve 9 can be made of sponge material and installed on the inner periphery of the extension tube 2 311. The extension tube 1 211 is inserted into the inner periphery of the buffer sleeve 9. The buffer sleeve 9 made of sponge material can buffer the vibration between the extension tube 1 211 and the extension tube 2 311 and absorb the vibration; in addition, the buffer sleeve 9 made of sponge material can block the gap between the extension tube 1 211 and the extension tube 2 311 to avoid air leakage and ensure that the cooling airflow can flow through the inverter body 4.

[0031] Reference Figure 3 , Figure 4 As shown, the air guide cover 3 includes a bottom plate 301 and a plurality of side enclosures 302. The number of the side enclosures 302 is generally four, and each side enclosure 302 is fixedly connected to the bottom plate 301. An installation space is formed between the four side enclosures 302, forming a roughly rectangular structure, and is adapted to the shape of the inverter body 4. The inverter body 4 is installed in the installation space.

[0032] The size of the installation space is larger than the inverter body 4, and a gap is formed between the side enclosure 302 and the edge of the inverter body 4. The air inlet 31 is opened in the middle position with the bottom plate 301, and the airflow entering from the air inlet 31 first flows through the heat dissipation channel between the heat sink 41, and then the airflow can flow out from the gap between the side enclosure 302 and the inverter body 4, realizing airflow circulation and heat dissipation.

[0033] A gap 32 is formed between adjacent side enclosures 302. A connecting block 42 is fixedly connected to the inverter body 4, and the connecting block 42 extends out of the air duct 3 from the gap 32. The connecting block 42 is fixedly connected to the frame 7 of the generator through the connecting frame 6. Taking the air duct 3 being roughly rectangular as an example, there are four side enclosures 302, and the number of gaps 32 is also four, and the four gaps 32 are respectively located on opposite sides of the air duct 3. The number of connecting blocks 42 of the inverter is four, and they correspond one to one with the four gaps 32. There are four connecting frames 6 on the outside of the air duct 3, and the four connecting frames 6 are connected to the four connecting blocks 42 one to one, and the other end of the connecting frame 6 is connected to the frame 7 of the generator, so that the inverter body 4 can be installed on the frame 7 of the generator to maintain a stable installation structure.

[0034] Reference Figure 3 , Figure 4 As shown, the four notches 32 are respectively located on both sides of the air guide cover 3, and the positions of the notches 32 are opposite to each other. In addition, the notches 32 are opposite to the direction of the heat dissipation channel, so that the airflow in part of the heat dissipation channel can directly flow out of the air guide cover 3 from the notches 32, which can shorten the flow path of the heat dissipation airflow and thus improve the heat dissipation efficiency.

[0035] This embodiment also discloses a generator set, referring to Figure 1 As shown, it includes a frame 7, an engine 1 and other related parts of the generator, and also includes the heat dissipation structure of the inverter of the engine 1 in the above embodiment. The various parts of the generator are supported by the frame 7 and installed in the frame 7. Among them, the engine 1 has a fan cover 2, which is the fan cover 2 in the heat dissipation structure of the engine inverter.

[0036] The inverter body 4 and the air guide cover 3 are installed at the side of the engine 1. The air guide cover 3 is provided with an air inlet 31 on the side facing the engine 1, and an extension pipe connected to the fan cover 2 is formed at the air inlet 31. The side of the air guide cover facing away from the engine 1 is open. During the heat dissipation process, the air flows out from the fan cover 2 of the engine 1, flows outward, passes through the air inlet 31 and enters the air guide cover 3, flows through the heat sink 41 of the inverter body 4 in the air guide cover 3, and finally flows out from the air guide cover 3, taking away the heat of the inverter body 4 to achieve heat dissipation.

[0037] 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 heat dissipation structure for a generator inverter, characterized in that: The inverter comprises an inverter body (4) and an air guide cover (3), wherein one side of the air guide cover (3) is open and an air inlet (31) is arranged on the other side, at least part of the inverter body (4) is arranged in the air guide cover (3), and a plurality of heat sinks (41) are arranged on the side of the inverter body (4) facing the air inlet (31); It also comprises a fan cover (2), an outer side of the fan cover (2) is provided with an air outlet (21), and the air outlet (21) is communicated with the air inlet (31).

2. The heat dissipation structure of the generator inverter according to claim 1, characterized in that: An extension tube 1 (211) is provided at the air outlet (21), and an extension tube 2 (311) is provided at the air inlet (31), and the extension tube 1 (211) and the extension tube 2 (311) are flexibly connected to each other.

3. The heat dissipation structure of the generator inverter according to claim 2, characterized in that: The extension tube 1 (211) and the extension tube 2 (311) are sleeved and connected to each other, and a buffer sleeve is provided at the connection between the extension tube 1 (211) and the extension tube 2 (311).

4. The heat dissipation structure of the generator inverter according to claim 1, characterized in that: The wind guide cover (3) comprises a bottom plate (301) and a plurality of side enclosures (302), each of the side enclosures (302) being fixedly connected to the bottom plate (301), and an installation space being formed between the side enclosures (302), and at least a portion of the inverter body (4) being arranged in the installation space.

5. The heat dissipation structure of the generator inverter according to claim 4, characterized in that: A gap is formed between the side enclosure (302) and the edge of the inverter body (4).

6. The heat dissipation structure of the generator inverter according to claim 4, characterized in that: A gap (32) is formed between adjacent side enclosures (302); a connecting block (42) is fixedly connected to the inverter body (4); the connecting block (42) extends out of the air guide cover (3) from the gap (32); and the connecting block (42) is fixedly connected to a frame (7) of the engine (1) via a connecting frame (6).

7. The heat dissipation structure of the generator inverter according to claim 6, characterized in that: The side enclosures (302) are provided in four numbers, the notches (32) are provided in four numbers, and the four notches (32) are respectively located on two opposite sides of the air guide cover (3); the inverter connection blocks (42) are provided in four numbers, and correspond one to one with the four notches (32).

8. The heat dissipation structure of the generator inverter according to claim 1, characterized in that: The heat sinks (41) are distributed in parallel, and heat dissipation channels are formed between adjacent heat sinks (41).

9. A generator set, characterized in that: The invention comprises a frame (7), an engine (1) and a heat dissipation structure for a generator inverter according to any one of claims 1 to 8, wherein the fan cover (2) is arranged on the engine (1), the inverter body (4) and the air guide cover (3) are arranged on the side of the engine (1), the air inlet (31) is arranged on the side of the air guide cover (3) facing the engine (1), and the air guide cover (3) is open on the side facing away from the engine (1).

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