Frequency converter with chimney type heat dissipation structure

Abstract

The utility model discloses a frequency converter with a chimney type heat radiation structure, and relates to the technical field of frequency converter heat radiation. 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 utility model relates to frequency converter heat dissipation technical field, concretely is a kind of frequency converter with chimney type heat dissipation structure. BACKGROUND

[0002] Frequency converter is a kind of motor control equipment, it utilizes frequency conversion technology and microelectronic technology, the frequency of motor working power is adjusted to control the operation of alternating current motor. Its working principle mainly includes rectification (converts alternating current into direct current), filtering, inversion (converts direct current into the alternating current of required frequency) etc.

[0003] The module heat dissipation of the existing frequency converter product inside market is completed by a radiator, in a plane and space, under the condition of high frequency and high power output requirement, heat cannot be taken away in a short time, leading to frequency converter report high temperature fault, affect the use experience of consumer, cannot satisfy product working condition requirement, and the temperature difference of each module is very big, leading to the embarrassing situation of partial high temperature of radiator, individual partial low temperature, ice and fire, is not conducive to heat dissipation and the working life of module, thereby leading to other electronic components module life greatly discounted, and the use effect is not ideal. SUMMARY

[0004] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of frequency converter with chimney type heat dissipation structure, including frequency converter main body and chimney type heat dissipation structure, the frequency converter main body includes IGBT module, rectifier bridge and brake module;

[0005] The chimney type heat dissipation structure includes heat dissipation cavity, radiator one, radiator two, air inlet, air outlet and fan, the IGBT module is located at one side of heat dissipation cavity, the rectifier bridge and brake module are located at the other side of heat dissipation cavity, the radiator one and the radiator two are all arranged in the inside of heat dissipation cavity, the air inlet and the air outlet are respectively arranged at the two sides of frequency converter main body and are respectively opposite to the two ends of heat dissipation cavity, the radiator one is located at one side of IGBT module, the radiator two is located at one side of rectifier bridge and brake module, the fan is arranged in the inside of air outlet and the number of fan is not less than one.

[0006] As a preferred technical scheme of the utility model, the area of air inlet is greater than the area of air outlet, the local of radiator one and radiator two is staggered.

[0007] As a preferred technical scheme of the utility model, the radiator one and the radiator two are all inserted sheet type radiator and the tooth width of radiator one is greater than the tooth width of radiator two.

[0008] As a preferred technical scheme of the utility model, the frequency converter main body further comprises assembly cavity one, assembly cavity two and assembly cavity three, the assembly cavity one and the assembly cavity two are respectively located at both sides of the heat dissipation cavity, and the assembly cavity three is located at the top of the heat dissipation cavity.

[0009] As a preferred technical scheme of the utility model, the inside of the assembly cavity one is provided with mounting plate one, which is used for mounting IGBT module and separating the assembly cavity one and the heat dissipation cavity, the radiator one is arranged on the side of the mounting plate one away from the IGBT module and corresponds to the IGBT module, the inside of the assembly cavity two is provided with mounting plate two and mounting plate three arranged at the bottom of the mounting plate two, which are used for separating the assembly cavity two and the heat dissipation cavity, and the radiator two is arranged on the side of the mounting plate two.

[0010] As a preferred technical scheme of the utility model, the rectifier bridge and the brake module are arranged on the side of the mounting plate two away from the radiator two and correspond to the radiator two, and the side of the mounting plate three is provided with an electric reactor.

[0011] As a preferred technical scheme of the utility model, the top end of the air inlet is bent and extends to the top of the air outlet, which is used for separating the assembly cavity three and the heat dissipation cavity, and the side of the frequency converter main body is provided with an incoming line port located at the top of the air inlet and the number of which is not less than one.

[0012] As a preferred technical scheme of the utility model, the side of the mounting plate one is provided with a plurality of capacitors located in the inside of the heat dissipation cavity, one end of the plurality of capacitors is commonly connected with an aluminum bar located on the side of the IGBT module, the other side of the mounting plate one is provided with a power board and a power supply board located on the other side of the IGBT module, and the power supply board is located below the power board.

[0013] As a preferred technical scheme of the utility model, the side of the mounting plate two is provided with a relay located on the side of the brake module, and the side of the rectifier bridge is provided with an approval board.

[0014] As a preferred technical scheme of the utility model, the inside of the assembly cavity three is provided with a plurality of terminal blocks, and the top of the frequency converter main body is provided with a control panel.

[0015] Compared with the prior art, the utility model provides a frequency converter with chimney type heat dissipation structure, which has the following beneficial effects:

[0016] The frequency converter with the chimney type heat dissipation structure, the long and narrow heat dissipation cavity has a larger matching area than the air inlet of the air outlet, forms the chimney type heat dissipation structure, and the generated heat can be quickly taken away by the cooperation of the two fans, so as to ensure the long time operation of the whole flat body, the heat radiator one and the heat radiator two are staggered in the upper and lower parts, and the area of the heat radiator one is larger than that of the heat radiator two, the heat radiator one is used for dissipating heat of the IGBT module and bears the main heat, the heat radiator two bears the heat dissipation of the rectifier bridge and the brake module, and the relative heat is smaller, and such a design indirectly leads to the increase of the air inlet amount, the larger the air volume, the more the heat taken away, and the product structure layout is more reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are schematic and not intended to be limiting of the embodiments, in which like reference numerals refer to like elements in the drawings and in which:

[0018] Figure 1 A structure schematic view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0019] Figure 2 An air inlet structure schematic view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0020] Figure 3 A frequency converter main body internal structure schematic view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0021] Figure 4 An air inlet and frequency converter main body separation state schematic view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0022] Figure 5 A heat dissipation cavity structure schematic view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0023] Figure 6 A heat radiator one and heat radiator two structure sectional view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0024] Figure 7 An aluminum row structure side view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0025] Figure 8 A rectifier bridge and brake module structure side view of the frequency converter with the chimney type heat dissipation structure is provided for the utility model;

[0026] Figure 9The utility model provides a kind of radiator one and radiator two structure schematic diagram of frequency converter with chimney type heat dissipation structure.

[0027] In the drawing: 1, frequency converter main body;11, IGBT module;12, rectifier bridge;13, brake module;14, assembly cavity one;141, mounting plate one;142, capacitor;143, aluminum row;144, power board;145, power board;15, assembly cavity two;151, mounting plate two;152, mounting plate three;153, electric reactor;154, relay;155, safety board;16, assembly cavity three;161, terminal block;17, incoming line port;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

[0028] In order to be able to more detailedly understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the attached drawings are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0029] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0031] In addition, the terms "set", "connected", and "fixed" should be understood broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection via an intermediate medium, or internal communication between two devices, elements or components. The specific meanings of the above terms in the embodiments of the present disclosure can be understood by those skilled in the art according to the specific circumstances.

[0032] Unless otherwise specified, the term "a plurality of" means two or more.

[0033] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0034] Please refer to Figures 1-9 A frequency converter with chimney heat dissipation structure, comprising a frequency converter body 1 and a chimney heat dissipation structure 2, comprising a frequency converter body 1 and a chimney heat dissipation structure 2, the frequency converter body 1 comprises an IGBT module 11, a rectifier bridge 12 and a brake module 13.

[0035] The chimney heat dissipation structure 2 comprises a heat dissipation cavity 21, a heat sink one 22, a heat sink two 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 one 22 and the heat sink two 23 are arranged inside the heat dissipation cavity 21, the air inlet 24 and the air outlet 25 are arranged on both sides of the frequency converter body 1 respectively and opposite to both ends of the heat dissipation cavity 21, the heat sink one 22 is located on one side of the IGBT module 11, the heat sink two 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 the fan 26 is not less than one, and the number of the fan 26 is two.

[0036] As a specific technical solution of the present embodiment, the area of the air inlet 24 is greater than the area of the air outlet 25, the heat sink one 22 and the heat sink two 23 are partially staggered, the heat sink one 22 and the heat sink two 23 are both inserted sheet heat sinks, and the tooth width of the heat sink one 22 is greater than the tooth width of the heat sink two 23.

[0037] In the 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 which is smaller than the air outlet 25 to form a chimney type heat dissipation structure. With the help of two fans 26, the generated heat can be quickly taken away, thereby ensuring the long-time operation of the entire product. The area of the radiator one 22 is larger than that of the radiator two 23. The radiator one 22 is used for dissipating heat of the IGBT module 11 and bears the main heat, so the area of the radiator one 22 is large and the tooth blade is long. The radiator two 23 is used for dissipating heat of the rectifier bridge 12 and the brake module 13, and bears relatively small heat, so the area of the radiator two 23 is smaller than that of the radiator one 22. According to the volume, the two radiators bear different functions and complete their own heat dissipation missions to ensure stable temperature and thereby ensure high reliability and high environmental adaptability of the product.

[0038] The radiator one 22 and the radiator two 23 are located on the left and right sides of the heat dissipation cavity 21, and the tooth blades are opposite and partially staggered up and down. Such a design indirectly leads to an increase in the air volume, and the larger the air volume, the more heat is taken away, and the product structure layout is more reasonable.

[0039] As a specific technical solution of the embodiment, the frequency converter main 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 the left and right sides of the heat dissipation cavity 21, and the assembly cavity three 16 is located on the top of the heat dissipation cavity 21.

[0040] In the embodiment, the IGBT module 11, the rectifier bridge 12 and the brake module 13 generate a large amount of heat when working. Under the action of the fan 26, a large amount of air is introduced into the air inlet 24. The design of the heat dissipation cavity 21, the assembly cavity one 14, the assembly cavity two 15 and the assembly cavity three 16 forms a relatively independent cavity in the up, down, left and right spaces of the frequency converter main body 1. The long and narrow heat dissipation cavity 21 is conducive to the circulation of air volume and forms a strong convection space, and the structure design is more ingenious.

[0041] As a specific technical solution of the embodiment, the inside of the assembly cavity one 14 is provided with a mounting plate one 141 for mounting the IGBT module 11 and separating the assembly cavity one 14 and the heat dissipation cavity 21, the heat sink one 22 is arranged on the side of the mounting plate one 141 away from the IGBT module 11 and corresponds to the IGBT module 11, the inside of the assembly cavity two 15 is provided with a mounting plate two 151 and a mounting plate three 152 arranged at the bottom of the mounting plate two 151 for separating the assembly cavity two 15 and the heat dissipation cavity 21, the heat sink two 23 is arranged on one side of the mounting plate two 151, the rectifier bridge 12 and the brake module 13 are arranged on the side of the mounting plate two 151 away from the heat sink two 23 and correspond to the heat sink two 23, one side of the mounting plate three 152 is provided with an electric reactor 153, the top end of the air inlet 24 is bent and extends to the top of the air outlet 25 for separating the assembly cavity three 16 and the heat dissipation cavity 21, one side of the frequency converter body 1 is provided with an incoming line port 17 located at the top of the air inlet 24 and the number of which is not less than one, one side of the mounting plate one 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 one 141 is provided with a power board 144 and a power supply board 145 located on the other side of the IGBT module 11, the power supply board 145 is located below the power board 144, one side of the mounting plate two 151 is provided with a relay 154 located on one side of the brake module 13, one side of the rectifier bridge 12 is provided with a safety regulation board 155, the inside of the assembly cavity three 16 is provided with a plurality of wire connectors 161, and the top of the frequency converter body 1 is provided with a control panel 18.

[0042] In the embodiment, the fan 26 is started to suck air, the air enters through the air inlet 24, first dissipates heat of the high-heat capacitor 142, the heat of the IGBT module 11 is conducted to the heat sink one 22, the heat of the rectifier bridge 12 and the brake module 13 is conducted to the heat sink two 23, the air carries away the heat after passing through the heat sink one 22 and the heat sink two 23 and is discharged through the air outlet 25, the design of the heat sink one 22 and the heat sink two 23 enables the high-heat IGBT module 11, the rectifier bridge 12 and the brake module 13 to dissipate heat through the heat dissipation cavity 21, reduces the concentration of the overall temperature of the frequency converter body 1, most of the heat is taken away by the heat dissipation cavity 21, and the small part of heat emitted by the remaining electrical element modules, such as the power board 144, the electric reactor 153, the power supply board 145, the relay 154 and the safety regulation board 155, is dissipated to the assembly cavity one 14, the assembly cavity two 15 and the assembly cavity three 16 without interference.

[0043] In summary, the frequency converter with the chimney heat dissipation structure, the long and narrow heat dissipation cavity 21 cooperates with the area larger than the air inlet 24 of the air outlet 25 to form the chimney heat dissipation structure, cooperates with the two fans 26 to generate the heat which can be quickly taken away, thereby ensuring the long time operation of the whole flat body, the heat radiator one 22 and the heat radiator two 23 are staggered, and the area of the heat radiator one 22 is larger than that of the heat radiator two 23, the heat radiator one 22 is used for dissipating heat of the IGBT module 11 and bears the main heat, the heat radiator two 23 bears the heat dissipation of the rectifier bridge 12 and the brake module 13, and the relative heat is small, such design also indirectly leads to the increase of the air inlet, the larger the air volume, the more the heat taken away, and the product structure layout is more reasonable.

[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A frequency converter with a chimney-type heat dissipation structure, comprising a frequency converter body (1) and a chimney-type heat dissipation structure (2), characterized in that: The inverter body (1) includes an IGBT module (11), a rectifier bridge (12), and a braking module (13). The chimney-type heat dissipation structure (2) includes a heat dissipation cavity (21), a first heat sink (22), a second 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), and the rectifier bridge (12) and the braking module (13) are located on the other side of the heat dissipation cavity (21). The first heat sink (22) and the second heat sink (23) are both located inside the heat dissipation cavity (21). The air inlet (24) and the air outlet (25) are respectively located on both sides of the inverter body (1) and are respectively opposite to the two ends of the heat dissipation cavity (21). The first heat sink (22) is located on one side of the IGBT module (11), and the second heat sink (23) is located on one side of the rectifier bridge (12) and the braking module (13). The fan (26) is located 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 first radiator (22) and the second radiator (23) are partially offset.

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

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

5. A frequency converter with a chimney-type heat dissipation structure according to claim 4, characterized in that: The assembly cavity one (14) is provided with an installation plate one (141) for installing the IGBT module (11) and separating the assembly cavity one (14) and the heat dissipation cavity (21). The heat sink one (22) is located on the side of the installation plate one (141) away from the IGBT module (11) and corresponds to the IGBT module (11). The assembly cavity two (15) is provided with an installation plate two (151) and an installation plate three (152) located at the bottom of the installation plate two (151) for separating the assembly cavity two (15) and the heat dissipation cavity (21). The heat sink two (23) is located on one side of the installation plate two (151).

6. A frequency converter with a chimney-type heat dissipation structure according to claim 5, characterized in that: The rectifier bridge (12) and the braking module (13) are located on the side of the mounting plate two (151) away from the radiator two (23) and are opposite to the radiator two (23). A reactor (153) is provided on one side of the mounting plate three (152).

7. A 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) to separate the assembly cavity (16) and the heat dissipation cavity (21). The inverter body (1) has a cable inlet (17) located at the top of the air inlet (24) and there is no less than one inlet.

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

9. A frequency converter with a chimney-type heat dissipation structure according to claim 5, characterized in that: A relay (154) located on the side of the brake module (13) is provided on one side of the mounting plate 2 (151), and a safety plate (155) is provided on one side of the rectifier bridge (12).

10. A frequency converter with a chimney-type heat dissipation structure according to claim 4, characterized in that: The assembly cavity three (16) is provided with several terminal blocks (161), and the inverter body (1) is provided with a control panel (18) on top.

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