CN218888904U

CN218888904U - Inverter air-cooling heat dissipation system and inverter applying same

Info

Publication number: CN218888904U
Application number: CN202222709468.0U
Authority: CN
Inventors: 韩韬; 王涛
Original assignee: Goodwe Technologies Co Ltd
Current assignee: Goodwe Technologies Co Ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-04-18
Anticipated expiration: 2032-10-14

Abstract

The utility model relates to an inverter air-cooled cooling system and use its dc-to-ac converter. The inverter air-cooling heat dissipation system comprises a plurality of inductance boxes and fans, wherein the inductance boxes are arranged outside an inverter box body and comprise first-class inductance boxes arranged on the air outlet side of the fans, the first-class inductance boxes are arranged in one row or multiple rows, each row of the first-class inductance boxes are arranged along the air outlet direction of the fans, each row of the first-class inductance boxes is arranged in a staggered mode in the direction perpendicular to the air outlet direction of the fans, fins extending along the air outlet direction of the fans are arranged on the first-class inductance boxes, and air flow channels for the air outlet air flow of the fans to circulate are formed between the adjacent fins; the air flow flows into the fan from the air inlet side of the fan, flows out of the fan from the air outlet side of the fan and flows through each air flow channel. The inverter comprises an inverter box body and the inverter air-cooling heat dissipation system. The utility model discloses can realize better radiating effect, solve the too high problem of partial inductance box temperature rise to avoid increasing the die sinking cost.

Description

Inverter air-cooling heat dissipation system and inverter applying same

Technical Field

The utility model relates to a new forms of energy electricity generation technical field, concretely relates to forced air cooling system and use its dc-to-ac converter.

Background

An inverter is a conversion device that converts direct-current electric energy generated by a power generation device into alternating-current electric energy that can be used for grid connection. In the inverter, electronic components such as transistors and inductors can generate a large amount of heat during working, and the heat needs to be timely transmitted to the atmospheric environment through heat radiators, inductor boxes and other heat dissipation devices, so that the electronic components can be prevented from losing efficacy due to overhigh temperature. The high-power inverter is generally used outdoors, the environmental conditions are severe, and the volume and the weight are limited, so that air cooling heat dissipation is required. The inverter air-cooled heat dissipation system mainly comprises heat dissipation components such as a radiator, a fan, an inductance box and the like. The inductor is encapsulated in the inductor box through the potting adhesive, and the inductor box is installed outside the inverter box body.

At present, a fan is generally arranged at the bottom of an inverter box body, and a radiator and an inductance box are arranged above the fan. The wind that the fan blew off blows through from bottom to top, and the inductance box is placed one side by side to it in the direction of gravity for the radiating effect of upper portion inductance box is relatively poor because sheltering from of bottom inductance box. In order to reduce the temperature of the upper inductor, the heat dissipation fins of the inductor box need to be gradually increased from bottom to top. The inductance box generally adopts a die-casting forming process, and the die sinking cost is increased due to the fact that the fins are different in height.

Disclosure of Invention

The utility model aims at providing a good inverter air-cooled cooling system who just avoids cost increase of radiating effect.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

an inverter air-cooling heat dissipation system comprises a plurality of inductance boxes and fans, wherein the inductance boxes are arranged outside an inverter box body and comprise first-class inductance boxes arranged on the air outlet side of the fans, the first-class inductance boxes are arranged in one row or multiple rows, each row of the first-class inductance boxes is arranged along the air outlet direction of the fan, each row of the first-class inductance boxes is arranged in a staggered mode in the direction perpendicular to the air outlet direction of the fans, fins extending along the air outlet direction of the fans are arranged on the first-class inductance boxes, and air flow channels for the air outlet flow of the fans to circulate are formed between the adjacent fins;

the air flow flows into the fan from the air inlet side of the fan, flows out of the fan from the air outlet side of the fan and flows through the air flow channels.

In each column of the first type inductance boxes, the offset distance formed by one first type inductance box closest to the fan relative to the other first type inductance box farthest from the fan is less than half of the width of the first type inductance box.

In each column of the first-type inductance boxes, the dislocation distance formed by two adjacent first-type inductance boxes is equal.

The height of the fins of each first-type inductance box is equal.

The height of the fins is smaller than 100mm, and the distance between the fins is 3-10mm.

The air outlet direction of the fan is vertical and upward.

The inductance box also comprises a second type of inductance box arranged on the air inlet side of the fan.

The second-type inductance boxes are arranged in one or more rows, and the number of the second-type inductance boxes in each row is 1.

The inductance box and the inverter box body are integrally formed in a die-casting mode or the inductance box is fixedly connected with the inverter box body through a connecting piece.

The inverter air-cooling heat dissipation system further comprises a radiator, and the radiator is arranged on the air outlet side of the fan.

The utility model also provides a good dc-to-ac converter of just avoiding cost increase of radiating effect, its scheme is:

an inverter comprises an inverter box body and the inverter air-cooling heat dissipation system.

The inverter further comprises a first wind shield and a second wind shield, wherein the first wind shield is connected with the inverter box body in a pivot mode, the second wind shield is fixedly connected with the inverter box body and located above the inverter air-cooling heat dissipation system, the inverter air-cooling heat dissipation system is arranged in a space between the inverter box body and the first wind shield and between the inverter box body and the second wind shield, and an air outlet is formed in the first wind shield.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses can realize better radiating effect, solve the too high problem of partial inductance box temperature rise to avoid increasing the die sinking cost.

Drawings

Fig. 1 is a schematic perspective view of an inverter according to the present invention.

Fig. 2 is a schematic structural view of a case back plate of an inverter according to a first embodiment of the present invention.

Fig. 3 is a schematic structural view of a case back plate of an inverter according to a first embodiment of the present invention.

Fig. 4 is a schematic structural view of a case back plate of an inverter according to a second embodiment of the present invention.

Fig. 5 is a schematic structural view of a case back plate of an inverter according to a third embodiment of the present invention.

Fig. 6 is a schematic structural view of a case back plate of an inverter according to a third embodiment of the present invention.

In the drawings above: 1. an inverter case; 2. a first windshield; 3. a first type of inductor box; 4. a second type of inductor box; 5. a fan; 6. a second wind deflector; 7. a heat sink.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The first embodiment is as follows: as shown in fig. 1 to 3, the inverter includes an inverter case 1 and an inverter air-cooled heat dissipation system. The inverter case 1 has a back panel that is in a vertical state after installation, and the inverter air-cooled heat dissipation system is usually disposed on the back panel so as to be located outside the inverter case 1. The inverter further comprises a first wind shield 2 and a second wind shield 6, the first wind shield 2 is in pivot connection with the inverter box body 1, the second wind shield 6 is fixedly connected with the inverter box body 1 and is located above the inverter air-cooling heat dissipation system, and therefore the inverter air-cooling heat dissipation system is arranged in a space between the inverter box body 1 and the first wind shield 2 as well as the second wind shield 6. An air outlet is formed in the upper portion of the first wind deflector 2, and an air inlet is formed between the bottom of the first wind deflector 2 and the inverter box body 1.

The inverter air-cooling heat dissipation system comprises a plurality of inductance boxes (the number of the inductance boxes is more than or equal to 2), a plurality of fans (the number of the fans is more than or equal to 3), a heat radiator 7 and the like. The inductance boxes are divided into two types, namely a first type inductance box 3 and a second type inductance box 4. In this embodiment, the inductor box comprises only the first type of inductor box 3. Some of the fans 5 are arranged corresponding to the inductance boxes for heat dissipation of the inductance boxes, and the first-type inductance boxes 3 are arranged on the air outlet side of the fans 5.

The first-type inductance boxes 3 are arranged in one row or multiple rows, a plurality of first-type inductance boxes 3 in each row are arranged along the air outlet direction of the first-type fan 5, and the first-type inductance boxes 3 in each row are arranged in a staggered mode in the direction perpendicular to the air outlet direction of the first-type fan 5. In this embodiment, the first type inductance boxes 3 are arranged in a row and located on the left side (fig. 2) or the right side (fig. 3) of the inverter box body 1, the heat sink 7 is located on the right side (fig. 2) or the left side (fig. 3) of the first type inductance boxes 3, the fans 5 are arranged at the bottom of the inverter box body 1 and arranged in rows, the first type inductance boxes are located above the fans 5, the air outlet direction of the fans 5 is vertically upward, and each row of the first type inductance boxes 3 is arranged along the vertical direction/the gravity direction. In each column of the first-type inductance boxes 3, the dislocation distances formed by two adjacent first-type inductance boxes 3 are equal and the dislocation directions are the same. The offset distance formed by the first inductance box 3 closest to the fan 5 relative to the first inductance box 3 farthest from the fan 5 is less than half the width of the first inductance box 3 (the width of the first inductance box 3 is the dimension of the first inductance box 3 in the direction perpendicular to the air outlet direction of the fan 5).

The first-class inductance boxes 3 are identical in appearance, fins extending in the air outlet direction of the first-class fan 5, namely the vertical direction/gravity direction, are arranged, the height of the fins of the first-class inductance boxes 3 is equal, the height of the fins is smaller than 100mm, the distance between the fins is 3-10mm, and the optimal size can be calculated through simulation, so that the optimal heat dissipation capacity is achieved. An airflow channel for the air outlet airflow of the fan 5 to circulate is formed between adjacent fins, so that the airflow flows into the fan 5 from the air inlet side of the fan 5, flows out of the fan 5 from the air outlet side of the fan 5, flows through each airflow channel, and finally flows out from the upper part of the airflow channel. The air outlet on the first wind shield 2 is correspondingly arranged above the air flow channel, so that the air flow can be deflected by the second wind shield 6 and then flows out from the air outlet on the first wind shield 2. The first wind deflector 2 and the second wind deflector 6 play a role of protecting the inverter air-cooled heat dissipation system.

The remaining fans 5 are used to dissipate heat from the heat sink 7, and the heat sink 7 is disposed on the air outlet side of the fans 5, that is, the heat sink 7 is disposed above the fans 5.

Compared with the existing alignment arrangement, simulation results show that the temperature of the first type of inductance box 3 (namely, the inductance box at the top) farthest from the fan 5 can be reduced by more than 10 ℃, and the temperature difference between the inductance boxes is reduced.

Example two: as shown in fig. 4, when the number of the first type inductance boxes 3 is large and one first type inductance box is not placed, multiple rows may be provided, for example, one first type inductance box 3 may be respectively provided on the left and right sides of the heat sink 7, each row of the first type inductance boxes 3 may be placed in a staggered manner from bottom to top in the direction of the heat sink 7 to form two symmetrical first type inductance boxes 3, or each row of the first type inductance boxes 3 may be placed in a staggered manner in the same direction to form two asymmetrical first type inductance boxes 3. The number of first type boxes 3 per column may or may not be equal. A fan 5 is arranged below each row of the first-type inductance boxes 3.

Example three: as shown in fig. 5 and fig. 6, the inductance box includes not only the first type inductance box 3 but also the second type inductance box 4, and the second type inductance box 4 is disposed on the air inlet side of the fan 5. Because the air-out direction of fan 5 is vertical upwards, so second type inductance box 4 sets up in fan 5 below. The second type inductance boxes 4 are arranged in one or more rows, but the number of the second type inductance boxes 4 in each row is 1. The fan 5 and the second type inductance box 4 can be arranged in a one-to-one or many-to-one manner. The air suction side of the fan 5 sucks air, and the convection heat transfer on the surface of the second type inductance box 4 is enhanced. The parameters of the fins on the second type inductance box 4 can also be designed through simulation calculation.

In the above embodiments, the inductance box and the inverter case 1 are integrally formed by die casting, or the inductance box is fixedly connected to the inverter case 1 (sheet metal component) by a connecting member (e.g., a screw).

Above-mentioned scheme can strengthen inductance box surface convection heat transfer through inductance box is placed at 5 air-out directions (gravity direction) staggered arrangements of fan to solve inductance box's temperature rise difference problem, realize better radiating effect, inductance box can adopt the same structural design simultaneously, reduces the die sinking cost.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides an inverter air-cooled cooling system, is including installing a plurality of inductance boxes and the fan in the inverter box outside, the inductance box including set up in the first type inductance box of the air-out side of fan, first type inductance box is one or multiseriate and arranges its characterized in that: each row of the first inductance boxes are arranged along the air outlet direction of the fan, each row of the first inductance boxes are arranged in a staggered mode in the direction perpendicular to the air outlet direction of the fan, fins extending along the air outlet direction of the fan are arranged on the first inductance boxes, and an airflow channel for the circulation of the air outlet airflow of the fan is formed between the adjacent fins;

2. The inverter air-cooled heat dissipation system according to claim 1, characterized in that: in each column of the first type inductance boxes, the offset distance formed by one first type inductance box closest to the fan relative to the other first type inductance box farthest from the fan is less than half of the width of the first type inductance box.

3. The inverter air-cooled heat dissipation system according to claim 1, characterized in that: in each column of the first-type inductance boxes, the dislocation distances formed by two adjacent first-type inductance boxes are equal.

4. The inverter air-cooled heat dissipation system according to claim 1, characterized in that: the height of the fins of each first-type inductance box is equal.

5. The inverter air-cooled heat dissipation system according to claim 4, characterized in that: the height of the fins is less than 100mm, and the distance between the fins is 3-10 mm.

6. The inverter air-cooled heat dissipation system according to claim 1, characterized in that: the air outlet direction of the fan is vertical and upward.

7. The inverter air-cooled heat dissipation system according to claim 1, characterized in that: the inductance box also comprises a second inductance box arranged on the air inlet side of the fan.

8. The inverter air-cooled heat dissipation system according to claim 7, characterized in that: the second-type inductance boxes are arranged in one or more rows, and the number of the second-type inductance boxes in each row is 1.

9. The inverter air-cooled heat dissipation system according to claim 1, characterized in that: the inductance box and the inverter box body are integrally formed in a die-casting mode or the inductance box is fixedly connected with the inverter box body through a connecting piece.

10. The inverter air-cooled heat dissipation system according to claim 1, characterized in that: the inverter air-cooling heat dissipation system further comprises a radiator, and the radiator is arranged on the air outlet side of the fan.

11. The utility model provides an inverter, includes the inverter box, its characterized in that: the inverter further comprises the inverter air-cooled heat dissipation system of any one of claims 1 to 10.

12. The inverter of claim 11, wherein: the inverter further comprises a first wind shield and a second wind shield, the first wind shield is connected with the inverter box body through a pivot, the second wind shield is fixedly connected with the inverter box body and located above the inverter air-cooled heat dissipation system, the inverter air-cooled heat dissipation system is arranged in a space between the inverter box body and the first wind shield and between the inverter box body and the second wind shield, and an air outlet is formed in the first wind shield.