Frequency converter with chimney type heat dissipation structure

Abstract

The invention discloses a frequency converter with a chimney type heat dissipation structure, and relates to the technical field of frequency converter heat dissipation. Comprising a frequency converter body and a chimney-type heat dissipation structure. The chimney type heat dissipation structure comprises a first radiator, a second radiator, an air inlet, an air outlet and a fan. The long and narrow heat dissipation cavity is matched with the air inlet with the area larger than that of the air outlet to form a chimney type heat dissipation structure, clamping of the two fans is matched, generated heat can be rapidly taken away, and therefore long-time operation of the whole flattening device body is guaranteed. The first radiator and the second radiator are partially staggered up and down, and the area of the first radiator is larger than that of the second radiator. The first radiator is used for radiating heat of the IGBT module and bears main heat, the second radiator bears heat of the rectifier bridge and the brake module, and relative heat is small, so that due to the design, the air inlet amount is indirectly increased, the larger the air amount is, the more the heat is taken away, and the structural layout of the product is more reasonable.

Description

Technical Field

[0001] The invention relates to the technical field of inverter heat dissipation, in particular to an inverter with a chimney-type heat dissipation structure. Background Art

[0002] The inverter is a type of motor control device that uses frequency conversion technology and microelectronics technology to control the operation of the AC motor by adjusting the frequency of the motor's working power supply. Its working principle mainly includes rectification (converting AC power into DC power), filtering, and inversion (converting DC power into AC power of the required frequency).

[0003] The heat dissipation of modules inside the existing inverter products on the market is completed by a radiator. In a plane and space, due to the high frequency of use and high power output requirements, the heat cannot be taken away in a short time, causing the inverter to report a high temperature fault, affecting the consumer's experience and failing to meet the product operating requirements. In addition, the temperature of each module varies greatly, resulting in the radiator having high temperatures in some areas and low temperatures in some areas, creating an awkward situation of ice and fire, which is not conducive to heat dissipation and the working life of the module, thereby greatly reducing the life of other electronic components and modules and resulting in unsatisfactory use effects. Summary of the invention

[0004] To achieve the above object, the present invention provides the following technical solution: an inverter with a chimney-type heat dissipation structure, comprising an inverter body and a chimney-type heat dissipation structure, wherein the inverter body comprises an IGBT module, a rectifier bridge and a brake module; The chimney-type heat dissipation structure includes a heat dissipation cavity, a radiator 1, a radiator 2, an air inlet, an air outlet and a fan. The IGBT module is located on one side of the heat dissipation cavity, the rectifier bridge and the brake module are located on the other side of the heat dissipation cavity, the radiator 1 and the radiator 2 are both arranged inside the heat dissipation cavity, the air inlet and the air outlet are respectively arranged on both sides of the inverter body and are respectively opposite to the two ends of the heat dissipation cavity, the radiator 1 is located on one side of the IGBT module, the radiator 2 is located on one side of the rectifier bridge and the brake module, and the fan is arranged inside the air outlet and the number of fans is not less than one.

[0005] As a preferred technical solution of the present invention, the area of ​​the air inlet is larger than the area of ​​the air outlet, and the radiator 1 and the radiator 2 are partially staggered.

[0006] As a preferred technical solution of the present invention, the radiator 1 and the radiator 2 are both plug-in fin radiators and the width of the teeth of the radiator 1 is greater than the width of the teeth of the radiator 2.

[0007] As a preferred technical solution of the present invention, the inverter body also includes assembly cavity one, assembly cavity two and assembly cavity three, the assembly cavity one and assembly cavity two are respectively located on both sides of the heat dissipation cavity, and the assembly cavity three is located at the top of the heat dissipation cavity.

[0008] As a preferred technical solution of the present invention, a mounting plate 1 is arranged inside the assembly cavity 1, which is used to install the IGBT module and separate the assembly cavity 1 and the heat dissipation cavity. The radiator 1 is arranged on the side of the mounting plate 1 away from the IGBT module and corresponds to the IGBT module. A mounting plate 2 and a mounting plate 3 arranged at the bottom of the mounting plate 2 are arranged inside the assembly cavity 2, which are used to separate the assembly cavity 2 and the heat dissipation cavity. The radiator 2 is arranged on one side of the mounting plate 2.

[0009] As a preferred technical solution of the present invention, the rectifier bridge and the brake module are arranged on the side of the mounting plate 2 away from the radiator 2 and corresponding to the radiator 2, and a reactor is arranged on one side of the mounting plate 3.

[0010] As a preferred technical solution of the present invention, the top of the air inlet is bent and extends to the top of the air outlet, which is used to separate the assembly cavity three and the heat dissipation cavity. One side of the inverter body is provided with a line inlet located at the top of the air inlet and the number is not less than one.

[0011] As a preferred technical solution of the present invention, a plurality of capacitors located inside the heat dissipation cavity are arranged on one side of the mounting plate one, and one ends of the plurality of capacitors are commonly connected to an aluminum bar located on one side of the IGBT module. A power board and a power supply board located on the other side of the IGBT module are arranged on the other side of the mounting plate one, and the power supply board is located below the power board.

[0012] As a preferred technical solution of the present invention, a relay located on one side of the brake module is provided on one side of the second mounting plate, and a safety board is provided on one side of the rectifier bridge.

[0013] As a preferred technical solution of the present invention, a plurality of wiring sockets are arranged inside the assembly cavity three, and a control panel is arranged on the top of the inverter body.

[0014] Compared with the prior art, the present invention provides a frequency converter with a chimney-type heat dissipation structure, which has the following beneficial effects: The inverter with a chimney-type heat dissipation structure has a long and narrow heat dissipation cavity with an air inlet area larger than the air outlet, forming a chimney-type heat dissipation structure. With the support of two fans, the generated heat can be quickly taken away, thereby ensuring the long-term operation of the entire flat device body. Radiator 1 and radiator 2 are partially staggered in the upper and lower parts, and the area of ​​radiator 1 is larger than that of radiator 2. Radiator 1 is used to dissipate heat for the IGBT module and bears the main heat. Radiator 2 is responsible for the heat dissipation of the rectifier bridge and the brake module, and has relatively less heat. Such a design also indirectly leads to an increase in the air intake. The larger the air volume, the more heat is taken away, and the product structure layout is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein: Figure 1 A schematic diagram of the structure of a frequency converter with a chimney-type heat dissipation structure proposed by the present invention; Figure 2 A schematic diagram of the air inlet structure of a frequency converter with a chimney-type heat dissipation structure proposed by the present invention; Figure 3 A schematic diagram of the internal structure of a frequency converter main body of a frequency converter with a chimney-type heat dissipation structure proposed by the present invention; Figure 4 This is a schematic diagram of a state in which the air inlet of a frequency converter with a chimney-type heat dissipation structure proposed by the present invention is separated from the interior of the frequency converter body; Figure 5 A schematic diagram of the heat dissipation cavity structure of a frequency converter with a chimney-type heat dissipation structure proposed by the present invention; Figure 6 This is a cross-sectional view of the structure of the radiator 1 and radiator 2 of a frequency converter with a chimney-type heat dissipation structure proposed by the present invention; Figure 7 This is a structural schematic diagram of a radiator 1 and a radiator 2 of a frequency converter with a chimney-type heat dissipation structure proposed by the present invention.

[0016] In the figure: 1. Inverter body; 11. IGBT module; 12. Rectifier bridge; 13. Braking module; 14. Assembly cavity one; 141. Mounting plate one; 142. Capacitor; 143. Aluminum busbar; 144. Power board; 145. Power board; 15. Assembly cavity two; 151. Mounting plate two; 152. Mounting plate three; 153. Reactor; 154. Relay; 155. Safety board; 16. Assembly cavity three; 161. Terminal block; 17. Wire inlet; 18. Control panel; 2. Chimney-type heat dissipation structure; 21. Heat dissipation cavity; 22. Radiator one; 23. Radiator two; 24. Air inlet; 25. Air outlet; 26. Fan. DETAILED DESCRIPTION

[0017] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0018] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0019] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0020] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0021] Unless otherwise stated, the term "plurality" means two or more.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0023] See also Figure 1-7 A frequency converter with a chimney-type heat dissipation structure includes a frequency converter main body 1 and a chimney-type heat dissipation structure 2, wherein the frequency converter main body 1 includes an IGBT module 11, a rectifier bridge 12 and a brake module 13.

[0024] The chimney-type heat dissipation structure 2 includes a heat dissipation cavity 21, a heat sink 1 22, a heat sink 23, an air inlet 24, an air outlet 25 and a fan 26. The IGBT module 11 is located on one side of the heat dissipation cavity 21, the rectifier bridge 12 and the brake module 13 are located on the other side of the heat dissipation cavity 21, the heat sink 1 22 and the heat sink 23 are both arranged inside the heat dissipation cavity 21, the air inlet 24 and the air outlet 25 are respectively arranged on both sides of the inverter body 1 and are respectively opposite to the two ends of the heat dissipation cavity 21, the heat sink 1 22 is located on one side of the IGBT module 11, the heat sink 23 is located on one side of the rectifier bridge 12 and the brake module 13, the fan 26 is arranged inside the air outlet 25 and the number of fans 26 is not less than one, and the number of fans 26 is two.

[0025] As a specific technical solution of this embodiment, the area of ​​the air inlet 24 is larger than the area of ​​the air outlet 25, the radiator 1 22 and the radiator 2 23 are partially staggered, the radiator 1 22 and the radiator 2 23 are both plug-in type radiators and the tooth width of the radiator 1 22 is larger than the tooth width of the radiator 2 23.

[0026] In this embodiment, the heat dissipation cavity 21 is long and narrow, which is conducive to the circulation of air volume. The long and narrow heat dissipation cavity 21 cooperates with the air inlet 24 whose area is larger than the air outlet 25 to form a chimney-type heat dissipation structure. With the support of two fans 26, the generated heat can be quickly taken away, thereby ensuring the long-term operation of the entire product. The area of ​​radiator 1 22 is larger than that of radiator 2 23. Radiator 1 22 is used to dissipate heat for the IGBT module 11 and bears the main heat. Therefore, radiator 1 22 has a large area and long teeth. Radiator 2 23 bears the heat dissipation of the rectifier bridge 12 and the brake module 13, and the heat is relatively small. Therefore, the area of ​​radiator 2 23 is smaller than that of radiator 1 22. The size of the volume also determines the role of the two radiators. Each radiator performs its own duties and completes its own heat dissipation mission to ensure temperature stability, thereby ensuring the continuous operation of the product with high reliability and high environmental adaptability.

[0027] Radiator 1 22 and radiator 2 23 are on the left and right sides of the heat dissipation cavity 21, with teeth facing each other and partially staggered in the upper and lower parts. Such a design also indirectly leads to an increase in the air intake. The larger the air volume, the more heat is taken away, and the more reasonable the product structure layout is.

[0028] As a specific technical solution of this embodiment, the inverter body 1 also includes an assembly cavity 14, an assembly cavity 15 and an assembly cavity 16. The assembly cavity 14 and the assembly cavity 15 are respectively located on both sides of the heat dissipation cavity 21, and the assembly cavity 3 16 is located at the top of the heat dissipation cavity 21.

[0029] In this embodiment, the IGBT module 11, the rectifier bridge 12 and the brake module 13 generate a lot of heat when working. Under the action of the fan 26, a large amount of air is taken in by the air inlet 24. The design of the heat dissipation cavity 21, the assembly cavity 14, the assembly cavity 2 15 and the assembly cavity 3 16 makes the internal space of the inverter body 1 form a relatively independent cavity up and down, left and right. The narrow heat dissipation cavity 21 is conducive to the circulation of air volume, forming a strong convection space, and the structural design is more ingenious.

[0030] As a specific technical solution of this embodiment, the interior of the assembly cavity 14 is provided with a mounting plate 141 for mounting the IGBT module 11 and separating the assembly cavity 14 from the heat dissipation cavity 21. The radiator 1 22 is arranged on the side of the mounting plate 141 away from the IGBT module 11 and corresponds to the IGBT module 11. The interior of the assembly cavity 2 15 is provided with a mounting plate 2 151 and a mounting plate 3 152 arranged at the bottom of the mounting plate 2 151 for separating the assembly cavity 2 15 from the heat dissipation cavity 21. The radiator 2 23 is arranged on one side of the mounting plate 2 151. The rectifier bridge 12 and the brake module 13 are arranged on the side of the mounting plate 2 151 away from the radiator 2 23 and correspond to the radiator 2 23. A reactor 153 is arranged on one side of the mounting plate 3 152. The top of the air inlet 24 is bent and extends to the top of the air outlet 25. A part is used to separate the assembly cavity three 16 and the heat dissipation cavity 21. One side of the inverter body 1 is provided with a line inlet 17 located at the top of the air inlet 24 and the number is not less than one. One side of the mounting plate 1 141 is provided with a plurality of capacitors 142 located inside the heat dissipation cavity 21. One end of the plurality of capacitors 142 is commonly connected to an aluminum bar 143 located on one side of the IGBT module 11. The other side of the mounting plate 1 141 is provided with a power board 144 and a power board 145 located on the other side of the IGBT module 11. The power board 145 is located below the power board 144. A relay 154 located on one side of the brake module 13 is provided on one side of the mounting plate 2 151. A safety board 155 is provided on one side of the rectifier bridge 12. A plurality of terminal blocks 161 are provided inside the assembly cavity three 16. A control panel 18 is provided on the top of the inverter body 1.

[0031] In this embodiment, the fan 26 is started to suck air, and the air enters through the air inlet 24. First, the high-heat capacitor 142 is cooled, and the heat of the IGBT module 11 is transferred to the radiator 1 22. The heat of the rectifier bridge 12 and the brake module 13 is transferred to the radiator 2 23. After the air passes through the radiator 1 22 and the radiator 2 23, the heat is taken away and discharged through the air outlet 25. The design of the radiator 1 22 and the radiator 2 23 allows the high-heat IGBT module 11, the rectifier bridge 12 and the brake module 13 to dissipate heat through the heat dissipation cavity 21, thereby reducing the overall temperature concentration of the inverter body 1. Most of the heat is taken away by the heat dissipation cavity 21, and a small part of the heat emitted by the remaining electrical component modules, such as the power board 144, the inductor 153, the power board 145, the relay 154, and the safety board 155, is dissipated to the assembly cavity 1 14, the assembly cavity 2 15, and the assembly cavity 3 16 without interfering with each other.

[0032] In summary, the inverter with a chimney-type heat dissipation structure, the narrow and long heat dissipation cavity 21 cooperates with the air inlet 24 whose area is larger than the air outlet 25, to form a chimney-type heat dissipation structure. With the support of two fans 26, the generated heat can be quickly taken away, thereby ensuring the long-term operation of the entire flat device body. The radiator 1 22 and the radiator 2 23 are partially staggered in the upper and lower parts, and the area of ​​the radiator 1 22 is larger than that of the radiator 2 23. The radiator 1 22 is used to dissipate the heat of the IGBT module 11 and bears the main heat. The radiator 2 23 bears the heat dissipation of the rectifier bridge 12 and the brake module 13, and the heat is relatively small. Such a design calmly and indirectly leads to an increase in the air intake. The larger the air volume, the more heat is taken away, and the product structure layout is more reasonable.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inverter with a chimney-type heat dissipation structure, comprising an inverter body (1) and a chimney-type heat dissipation structure (2), characterized in that: The inverter body (1) comprises an IGBT module (11), a rectifier bridge (12) and a brake module (13); The chimney-type heat dissipation structure (2) comprises a heat dissipation cavity (21), a heat sink 1 (22), a heat sink 2 (23), an air inlet (24), an air outlet (25) and a fan (26); the IGBT module (11) is located on one side of the heat dissipation cavity (21); the rectifier bridge (12) and the brake module (13) are located on the other side of the heat dissipation cavity (21); the heat sink 1 (22) and the heat sink 2 (23) are both arranged inside the heat dissipation cavity (21); the air inlet (24) and the air outlet (25) are respectively arranged on both sides of the inverter body (1) and are respectively opposite to the two ends of the heat dissipation cavity (21); the heat sink 1 (22) is located on one side of the IGBT module (11); the heat sink 2 (23) is located on one side of the rectifier bridge (12) and the brake module (13); the fan (26) is arranged inside the air outlet (25) and the number of fans (26) is not less than one.

2. The frequency converter with a chimney-type heat dissipation structure according to claim 1, characterized in that: The area of ​​the air inlet (24) is larger than the area of ​​the air outlet (25), and the radiator 1 (22) and the radiator 2 (23) are partially staggered.

3. The frequency converter with a chimney-type heat dissipation structure according to claim 1, characterized in that: The radiator 1 (22) and the radiator 2 (23) are both insert-type radiators, and the tooth width of the radiator 1 (22) is greater than the tooth width of the radiator 2 (23).

4. The frequency converter with a chimney-type heat dissipation structure according to claim 1, characterized in that: The inverter body (1) further comprises an assembly cavity one (14), an assembly cavity two (15) and an assembly cavity three (16); the assembly cavity one (14) and the assembly cavity two (15) are respectively located on two sides of the heat dissipation cavity (21); and the assembly cavity three (16) is located at the top of the heat dissipation cavity (21).

5. The frequency converter with a chimney-type heat dissipation structure according to claim 4, characterized in that: The first assembly cavity (14) is provided with a mounting plate (141) for mounting the IGBT module (11) and separating the first assembly cavity (14) from the heat dissipation cavity (21); the first heat sink (22) is provided on a side of the first assembly cavity (141) away from the IGBT module (11) and corresponding to the IGBT module (11); the second assembly cavity (15) is provided with a mounting plate (151) and a mounting plate (152) disposed at the bottom of the second assembly cavity (151) for separating the second assembly cavity (15) from the heat dissipation cavity (21); and the second heat sink (23) is provided on one side of the second assembly cavity (151).

6. The frequency converter with a chimney-type heat dissipation structure according to claim 5, characterized in that: The rectifier bridge (12) and the brake module (13) are arranged on a side of the second mounting plate (151) away from the second radiator (23) and corresponding to the second radiator (23), and a reactor (153) is arranged on one side of the third mounting plate (152).

7. The frequency converter with a chimney-type heat dissipation structure according to claim 1, characterized in that: The top of the air inlet (24) is bent and extends to the top of the air outlet (25), and is used to separate the assembly cavity three (16) and the heat dissipation cavity (21). One side of the inverter body (1) is provided with a line inlet (17) located at the top of the air inlet (24) and the number of the line inlets (17) is not less than one.

8. The frequency converter with a chimney-type heat dissipation structure according to claim 5, characterized in that: A plurality of capacitors (142) located inside the heat dissipation cavity (21) are arranged on one side of the mounting plate 1 (141); one end of the plurality of capacitors (142) is commonly connected to an aluminum bar (143) located on one side of the IGBT module (11); a power board (144) and a power supply board (145) located on the other side of the IGBT module (11) are arranged on the other side of the mounting plate 1 (141); the power supply board (145) is located below the power board (144).

9. The frequency converter with a chimney-type heat dissipation structure according to claim 5, characterized in that: A relay (154) located on one side of the brake module (13) is provided on one side of the second mounting plate (151), and a safety board (155) is provided on one side of the rectifier bridge (12).

10. The frequency converter with a chimney-type heat dissipation structure according to claim 4, characterized in that: A plurality of wiring sockets (161) are arranged inside the assembly cavity three (16), and a control panel (18) is arranged on the top of the inverter body (1).

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