Heat sink for converter

Abstract

The present invention belongs to the technical field of converters, and specifically relates to a heat dissipation device of a converter, wherein the heat dissipation device is installed in a chassis of the converter, the converter is provided with a winding, the heat dissipation device comprises a radiator, a mounting groove is provided in the middle of the radiator and runs through the front and rear sides thereof, a heat dissipation duct is provided on the outer side of the mounting groove, the heat dissipation duct is connected to the air inlet and the air outlet of the chassis, the winding is adaptively installed in the mounting groove, and the radiator is used to dissipate heat from the winding. Compared with the prior art, the heat dissipation device of the converter provided by the present invention provides a mounting groove in the middle of the radiator, and the shape of the mounting groove is set to be adaptive to the shape of the converter winding, so that the winding is adaptively installed in the mounting groove, so as to increase the contact area between the winding and the radiator, and effectively improve the heat dissipation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of converters, and in particular relates to a heat dissipation device for a converter. Background Art

[0002] As an electrical device that changes the voltage, frequency, number of phases and other electrical quantities or characteristics of a power system, the converter has been widely used in the transportation industry, manufacturing industry, etc., such as the shipping industry and the electroplating production industry. Since the converter generates a lot of heat during operation, which causes the ambient temperature to rise, people usually add cooling equipment to its use environment and set a heat dissipation device inside it to improve the heat dissipation effect so as not to affect the normal operation of the converter. However, the structure of the heat dissipation device of the existing converter is unreasonable, resulting in poor thermal conductivity of the converter's electrical components, such as the windings of the transformer and the windings of the inductor. The structure of the heat dissipation device causes its heat dissipation effect to decrease, thereby affecting the normal operation of the converter and even reducing its service life. Therefore, it is very necessary to develop a converter heat dissipation device with good heat dissipation effect. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a converter heat dissipation device with good heat dissipation effect.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A heat dissipation device for an inverter, the heat dissipation device is installed in a chassis of the inverter, the inverter is provided with a winding, the heat dissipation device includes a radiator, a mounting groove is provided in the middle of the radiator and runs through the front and rear sides thereof, a heat dissipation duct is provided on the outside of the mounting groove, the heat dissipation duct is connected to the air inlet and the air outlet of the chassis, the winding is adaptively installed in the mounting groove, and the radiator is used to dissipate heat from the winding.

[0006] Compared with the prior art, the converter heat dissipation device provided by the present invention provides a mounting groove in the middle of the heat sink, and sets the shape of the mounting groove to match the outer contour shape of the converter winding, so that the winding is adaptively installed in the mounting groove to increase the contact area between the winding and the heat sink, thereby improving the thermal conductivity efficiency and improving the heat dissipation effect.

[0007] Furthermore, the radiator includes a center frame and heat sinks respectively arranged on opposite sides of the center frame, the center frame is detachably connected to the heat sinks on each side through a connecting structure, the center frame is provided with the mounting groove, the heat dissipation duct includes a first heat dissipation duct arranged on the heat sinks on each side, the heat sinks on each side are provided with a plurality of metal heat dissipation fins, and the first heat dissipation duct is formed between adjacent metal heat dissipation fins.

[0008] Furthermore, the metal heat sink is formed on one side of the heat sink close to the center frame, and the heat dissipation duct also includes a second heat dissipation duct arranged between the heat sink and the outer wall of the center frame, the first heat dissipation duct runs through one side of the heat sink close to the center frame, and the second heat dissipation duct is connected to the first heat dissipation duct.

[0009] Furthermore, the two opposite sides of the central frame are respectively provided with arc-shaped air guide surfaces protruding toward the heat sink on the corresponding side, and preferably, each metal heat sink extends from the front end of the central frame to the rear end of the central frame. The wind in the radiator can contact the arc-shaped air guide surface through the second air duct and flow along the arc-shaped air guide surface to take away the heat of the central frame, thereby accelerating the heat dissipation rate of the central frame and improving the heat dissipation effect. The winding is installed in the installation groove of the center frame, and the heat it dissipates is transferred from the center frame to the heat sinks on both sides. When the wind enters the heat dissipation duct from the air inlet of the chassis and is discharged from the air outlet, it can take away the heat and also speed up the thermal conductivity of the heat sink, thereby improving the heat dissipation effect. In addition, due to the complex use environment of the converter and the presence of more corrosive substances around it, the heat sink is easily corroded. In order to prevent the internal parts of the heat sink from being corroded, the heat sink is usually required to be sealed. Accordingly, the heat sink provided by the present invention has a simple and compact structure and is easy to install and disassemble. Sealing can be achieved by coating a sealing layer at the connection between the center frame and the heat sink. The sealing method is simple and quick. This setting method not only saves assembly costs, but also has a good sealing effect, effectively reducing future maintenance costs.

[0010] Furthermore, the connection structure includes a first connection part provided at the middle of the upper end of the center frame, and a second connection part connected to the upper end of the first connection part and extending in the direction of the heat sinks on both sides, and the second connection part is detachably connected to a metal heat sink on the corresponding heat sink on one side. Preferably, first positioning grooves are provided on both sides of the second connection part, and first positioning protrusions adapted to the first positioning grooves are provided on the metal heat sinks of each heat sink on each side, and the first positioning protrusions are detachably installed in the first positioning grooves to realize the detachable connection between the second connection part and the metal heat sink.

[0011] Furthermore, the lower end of the center frame is open to form a wire groove for the wires of the connecting winding to pass through, and the connection structure also includes a third connection part provided at the lower end of the center frame and located on opposite sides of the wire groove, and the third connection part on each side is detachably connected to a metal heat sink on the corresponding side of the heat sink. Preferably, the third connection part on each side is provided with a second positioning protrusion, and the metal heat sink corresponding to the third connection part of each side of the heat sink is provided with a second positioning groove adapted to the second positioning protrusion, and the second positioning protrusion is detachably installed in the second positioning groove to realize the detachable connection between the third connection part and the metal heat sink.

[0012] The arrangement of the above-mentioned connection structure is simple in structure and is quick and easy to assemble.

[0013] Furthermore, the installation groove is filled with a sealing material that covers the winding. The arrangement of the sealing material can improve the thermal conductivity of the winding and the center frame on the one hand, and can effectively improve the sealing performance on the other hand, thereby preventing corrosive substances that enter the heat dissipation device with the wind from contacting the winding and affecting the magnetic life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional image of the radiator

[0015] Figure 2 Schematic diagram of the local structure of the converter

[0016] Figure 3 Cross-sectional view of the converter

[0017] Figure 4 Exploded view of the radiator

[0018] Figure 5 Front view of the radiator

[0019] Figure 6 for Figure 1 A magnified image of area A

[0020] Figure 7 for Figure 1 A magnified view of area B

[0021] Figure 8 for Figure 5 Magnified view of the C region

[0022] Fig. 9 A three-dimensional diagram of the heat dissipation device DETAILED DESCRIPTION

[0023] A preferred specific implementation of the present invention is described below with reference to the accompanying drawings.

[0024] See also Figures 1 to 3The present embodiment provides a heat dissipation device for a converter, the heat dissipation device is installed in a chassis 1 of the converter, the converter is provided with a winding 2, in a specific embodiment, the winding 2 includes but is not limited to the winding of a transformer and / or the winding of an inductor; the chassis 1 is provided with an air inlet 11 and an air outlet 12, the heat dissipation device includes a radiator 3 for dissipating heat from the winding 2, the radiator 3 includes a central frame 31 and heat sinks 32 respectively located on opposite sides of the central frame 31, the central frame 31 is detachably connected to the heat sinks 32 on each side through a connecting structure, a heat dissipation duct 4 connecting the air inlet 11 and the air outlet 12 is provided on the radiator 3, a mounting groove 311 penetrating through the front and rear sides of the central frame 31 is provided in the middle part of the central frame 31, the mounting groove 311 is adapted to the outer contour shape of the winding 2, the winding 2 is adaptively mounted in the mounting groove 311, and in the case of multiple windings 2, the winding 2 can be arranged along the length direction of the mounting groove 311.

[0025] As an improved solution, in order to improve the heat dissipation and sealing effects, the installation groove 311 is filled with a sealing material that covers the winding 2. The sealing material can be an existing filler such as resin. The setting method of the sealing material can, on the one hand, improve the thermal conductivity of the winding 2 and the center frame 31, and on the other hand, effectively improve the sealing performance, thereby preventing corrosive substances that enter the heat dissipation device with the wind from contacting the winding 2 and affecting the life of the winding 2.

[0026] See also Figure 1 , Figure 4 and Figure 5 The opposite sides of the center frame 31 are respectively provided with arc-shaped air guide surfaces 312 protruding toward the corresponding heat sink 32, and the lower end of the center frame 31 is open to form a wire groove 313 for the wires connected to the winding 2 to pass through.

[0027] See also Figure 1 , Figure 4 and Figure 5, a plurality of metal heat sinks 321 are provided on the heat sink 32 on each side. In a specific embodiment, the plurality of metal heat sinks 321 are longitudinally spaced apart on a side of the corresponding heat sink 32 close to the center frame 31, and each metal heat sink 321 extends laterally to the outside of the center frame 31. Preferably, the metal heat sink 321 and the heat sink 32 are an integral structure, and the metal heat sink 321 extends from the front end of the center frame 31 to the rear end of the center frame 31; the heat dissipation duct 4 includes a first heat dissipation duct 41 formed between two adjacent upper and lower metal heat sinks 321, and a second heat dissipation duct 42 formed between the heat sink 32 and the outer wall of the center frame 31, the first heat dissipation duct 41 runs through the side of the heat sink 32 close to the center frame 31, and the second heat dissipation duct 42 is connected to the first heat dissipation duct 41. Specifically, a gap is provided between the metal heat sink 321 and the outer wall of the center frame 31 to form the second heat dissipation duct 42. The above-mentioned arrangement of the heat sink 32 has a large contact area with the wind, which is beneficial to improving the heat dissipation efficiency. When the wind enters the heat sink through the air inlet 11 of the chassis 1, on the one hand, it can take away a part of the heat transferred from the center frame 31 to the heat sink 32 through the first air duct 41. On the other hand, the wind can contact the curved air guide surface 312 through the second air duct 42 and flow along the curved air guide surface 312 to take away the heat of the center frame 31. The above-mentioned arrangement can effectively improve the heat dissipation effect of the heat sink.

[0028] See also Figure 1 , Figures 4 to 7The connection structure includes a first connection part 51, a second connection part 52 and a third connection part 53. The first connection part 51 is arranged at the middle of the upper end of the center frame 31, and the second connection part 52 is connected to the upper end of the first connection part 51 and extends respectively in the direction of the heat sinks 32 on both sides. The first connection part 51, the second connection part 52 and the center frame 31 are preferably an integral structure. There are two third connection parts 53, which are respectively arranged at the lower end of the center frame 31 on the opposite sides of the wire groove 313. The second connection part 52 is detachably connected to a metal heat sink 321 on the heat sink 32 on the corresponding side, and the third connection part 53 on each side is detachably connected to a metal heat sink 321 on the heat sink 32 on the corresponding side. In a specific embodiment, the second connection part 52 is respectively connected to the metal heat sink 321 at the uppermost end of the heat sink 32, and the third connection part 53 is connected to the metal heat sink 321 at the lowermost end of the heat sink 32. Preferably, a first positioning groove 521 is respectively provided on both sides of the second connecting part 52, and a first positioning protrusion 522 matched with the first positioning groove 521 is respectively provided on the metal heat sink 321 of each side of the heat sink 32 corresponding to the second connecting part 52, and the first positioning protrusion 522 can be detachably installed in the first positioning groove 521 to achieve the positioning and installation of the second connecting part 52; a second positioning protrusion 531 is respectively provided on the third connecting part 53 on each side, and a second positioning groove 532 matched with the second positioning protrusion 531 is respectively provided on the metal heat sink 321 of each side of the heat sink 32 corresponding to the third connecting part 53, and the second positioning protrusion 531 can be detachably installed in the second positioning groove 532 to achieve the positioning and installation of the third connecting part 53.

[0029] See also Figure 1 , Figure 5 and Figure 7 As an improved solution, the third connecting portion 53 is provided with a blocking portion 533 extending in the direction of the metal heat sink 321 on the outer side of the second positioning protrusion 531. When the second positioning protrusion 531 is matched with the second positioning groove 532, the blocking portion 533 limits the longitudinal movement of the metal heat sink 321 provided with the second positioning groove 532. The above arrangement makes the matching between the heat sink 32 and the center frame 31 more tight.

[0030] See also Figure 5 and Figure 8As an improved solution, a first air guide portion 523 is provided on the lower side of the outer end of the second connecting portion 52 toward the metal heat sink 321 connected thereto. In a specific embodiment, the outer end of the second connecting portion 52 is bent toward the direction of the metal heat sink 321 connected thereto to form the first air guide portion 523. The first air guide portion 523 guides the wind from the lower side of the second connecting portion 52 to the lower side of the metal heat sink 321 connected to the second connecting portion 52. This arrangement can guide the wind close to the center frame 31 to the heat sink 32, thereby improving the heat dissipation efficiency. Specifically, the wind can flow to the lower side of the second connecting portion 52 along the arc-shaped air guide surface 312 through the second air duct 42, and then turn back under the blocking effect of the first connecting portion 51, and flow along the second connecting portion 52 toward the heat sink 321, and then flow to the lower side of the metal heat sink 321 under the guiding effect of the first air guide portion 523, thereby removing the heat from the center frame 31.

[0031] See also Figure 2 , Figure 3 and Fig. 9 As an improved solution, the heat dissipation device further includes a first connecting seat 6 and a second connecting seat 7, wherein the first connecting seat 6 is installed at the front of the radiator 3, and the second connecting seat 7 is installed at the rear of the radiator 3. Specifically, the first connecting seat 6 is connected to the front end of the radiator 3, and the second connecting seat 7 is connected to the rear end of the radiator 3. Preferably, in order to improve the sealing performance, the connection between the first connecting seat 6 and the radiator 3, and the connection between the second connecting seat 7 and the radiator 3 are respectively coated with a sealing layer; the first connecting seat 6 and the second connecting seat 7 are respectively connected to the chassis, and an air inlet channel 61 connecting the heat dissipation duct 4 and the air inlet 11 is provided in the middle of the first connecting seat 6, and an air outlet channel 71 connecting the heat dissipation duct 4 and the air outlet 12 is provided in the middle of the second connecting seat 7. A fan is provided on the air outlet 12 of the chassis, and the fan drives wind to enter the heat dissipation device through the air inlet 11 and discharge the wind from the converter through the air outlet 12.

[0032] See also Figure 3 and Fig. 9The first connecting seat 6 is provided with a first wind guiding structure and a second wind guiding structure, the first wind guiding structure includes a first wind guiding surface 62 arranged on the outside of the air inlet channel 61, the first wind guiding surface 62 is inclined downward from the outside to the inside, so as to guide the wind to the air inlet channel 61, the first wind guiding structure can effectively control the flow direction of the wind, reduce the wind resistance, and effectively enhance the heat dissipation effect of the heat dissipation device; the second wind guiding structure includes a second wind guiding portion 63 arranged in the middle of the air inlet channel 61 and covering the open end of the mounting groove 311, the second wind guiding portion 63 is a V-shaped structure, the second wind guiding portion 63 includes two intersecting wind guiding surfaces, the second wind guiding portion 63 guides the wind to the left and right sides of the air inlet channel 61 respectively, thereby increasing the air volume flowing through the heat sink 32 on the left and right sides, increasing the contact area between the metal heat sink 321 and the wind, and improving the heat dissipation effect.

[0033] Compared with the prior art, the inverter heat dissipation device provided by the present invention has a heat sink 3 comprising a central frame 31 and heat sinks 32 located on both sides of the central frame 31. The heat sink 32 is detachably connected to the central frame 31, which is convenient for installation and disassembly. Its connection structure is simple and compact, and the subsequent sealing method is simple. The sealing can be completed by simply coating a sealing layer at the connection. In addition, a mounting groove 311 adapted to the inverter winding 2 is provided in the central frame 31. The winding 2 is adaptively matched with the mounting groove 311 and is potted with a sealing material. On the one hand, the sealing effect can be improved and the corrosion rate of the winding 2 can be slowed down. On the other hand, this setting method can improve the thermal conductivity of the winding 2, thereby improving the heat dissipation effect. In addition, since the mounting groove 311 is adapted to the outer dimensions of the winding 2, the use of potting materials can be reduced, thereby saving costs. Secondly, the heat dissipation duct 4 of the present invention is reasonably laid out. The wind direction is determined by combining the metal heat sink 321, the central frame 31 and the setting method of the connection structure, thereby accelerating the heat dissipation efficiency.

[0034] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A heat sink for a converter, the heat sink being installed in a chassis of the converter, the converter being provided with a winding, characterized in that: The heat dissipation device includes a radiator, a mounting groove penetrating the front and rear sides of the radiator is provided in the middle of the radiator, a heat dissipation duct is provided on the outside of the mounting groove, the heat dissipation duct is connected to the air inlet and the air outlet of the chassis, the winding is adaptively installed in the mounting groove, and the radiator is used to dissipate heat from the winding.

2. The heat dissipation device for a converter according to claim 1, characterized in that: The radiator includes a central frame and heat sinks respectively arranged on opposite sides of the central frame. The central frame is detachably connected to the heat sinks on each side through a connecting structure. The central frame is provided with the mounting groove. The heat dissipation duct includes a first heat dissipation duct arranged on the heat sinks on each side.

3. The heat dissipation device for a converter according to claim 2, characterized in that: A plurality of metal heat sinks are arranged on the heat sink on each side, and the first heat sink air duct is formed between adjacent metal heat sinks.

4. The heat dissipation device for a converter according to claim 3, characterized in that: The metal heat sink is formed on one side of the heat sink close to the center frame, and the heat dissipation duct also includes a second heat dissipation duct arranged between the heat sink and the outer wall of the center frame. The first heat dissipation duct runs through the side of the heat sink close to the center frame, and the second heat dissipation duct is connected to the first heat dissipation duct.

5. The heat dissipation device for a converter according to claim 4, characterized in that: The opposite sides of the central frame are respectively provided with arc-shaped air guide surfaces protruding toward the heat sink on the corresponding side.

6. The heat dissipation device for a converter according to any one of claims 3 to 5, characterized in that: The connection structure includes a first connection part arranged in the middle of the upper end of the center frame, and a second connection part connected to the upper end of the first connection part and extending toward the heat sinks on both sides respectively, and the second connection part is detachably connected to a metal heat sink on the corresponding side heat sink.

7. The heat dissipation device for a converter according to claim 6, characterized in that: A first positioning groove is provided on both sides of the second connecting part, and a first positioning protrusion adapted to the first positioning groove is provided on the metal heat sink corresponding to the second connecting part of each side of the heat sink. The first positioning protrusion can be detachably installed in the first positioning groove to realize the detachable connection between the second connecting part and the metal heat sink.

8. The heat dissipation device of the converter according to any one of claims 3 to 5, characterized in that: The lower end of the center frame is open to form a wire groove for the wires connecting the windings to pass through. The connection structure also includes a third connection part arranged at the lower end of the center frame and located on opposite sides of the wire groove. The third connection part on each side is detachably connected to a metal heat sink on the heat sink on the corresponding side.

9. The heat dissipation device for a converter according to claim 8, characterized in that: The third connection part on each side is respectively provided with a second positioning protrusion, and the metal heat sink corresponding to the third connection part of each side of the heat sink is respectively provided with a second positioning groove adapted to the second positioning protrusion, and the second positioning protrusion can be detachably installed in the second positioning groove to realize the detachable connection between the third connection part and the metal heat sink.

10. The heat dissipation device for a converter according to any one of claims 1 to 5, characterized in that: The installation groove is filled with a sealing material covering the winding.

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