CN214800399U

CN214800399U - Frequency converter

Info

Publication number: CN214800399U
Application number: CN202120324040.7U
Authority: CN
Inventors: 章云霖; 武宗祥; 李玉相
Original assignee: Suzhou Inovance Technology Co Ltd
Current assignee: Suzhou Inovance Technology Co Ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-11-19
Anticipated expiration: 2031-02-04

Abstract

The utility model provides a frequency converter, which comprises a case, a radiator, a filtering component and a fan component, wherein the case comprises an air inlet, an air outlet and an airflow channel formed between the air inlet and the air outlet; the filter assembly is detachably mounted between the radiator and the air inlet. The utility model discloses a set up filtering component, granule and the flocculent impurity in the cooling air current of can effective filtration avoids causing radiating fin's clearance to block up, has both guaranteed the heat-sinking capability of radiator, can not obstruct cooling air current's flow again, can effectively improve airflow channel's radiating effect.

Description

Frequency converter

Technical Field

The embodiment of the utility model provides a relate to power electronic equipment field, more specifically say, relate to a converter.

Background

The frequency converter is a power electronic device which converts a power frequency power supply into an adjustable and controllable frequency power supply by controlling a switch of an industrial semiconductor device. In the process of converting electric energy, a large amount of heat can be generated by the semiconductor device inside the frequency converter, and if the heat cannot be dissipated in time, the semiconductor device can be damaged due to overheating.

At present, the frequency converter on the market generally adopts three kinds of modes of air cooling, liquid cooling or water wind heat dissipation to dispel the heat inside the frequency converter to realize the heat dissipation cooling. Wherein, the forced air cooling heat dissipation is the comparatively common radiating mode of current converter, and it mainly forms endless cooling air current through the drive of fan assembly, and the radiator of deuterogamying can high-efficiently absorb the heat in the inside of converter and on the frequency conversion subassembly to the realization is to the inside and frequency conversion subassembly's of converter heat dissipation cooling.

However, since the heat dissipating fins of the heat sink are dense, and external dust is easy to enter the inside of the frequency converter along with the circulating cooling airflow, a large amount of dust can be accumulated on the heat dissipating fins of the heat sink, especially particles and flocculent impurities in the dust, so that gaps between the heat dissipating fins are blocked, the heat dissipating capacity of the heat dissipating fins is greatly reduced, the flow of the cooling airflow is also hindered, the circulating flow efficiency of the cooling airflow is reduced, and the heat in the frequency converter cannot be efficiently transferred to the outside.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a to the radiating fin of the radiator of above-mentioned current converter pile up the dust easily, cause the jam easily, weakened radiating fin's heat-sinking capability and reduced the problem of cooling air flow's circulation flow efficiency, provide a new converter.

The embodiment of the utility model provides a solve above-mentioned technical problem's technical scheme is, provide a converter, including quick-witted case, radiator, filtering component and fan assembly, wherein: the chassis comprises an air inlet, an air outlet and an airflow channel formed between the air inlet and the air outlet, the fan assembly, the filter assembly and the radiator are respectively positioned in the airflow channel, and the fan assembly provides power for the airflow channel between the air inlet and the air outlet; the filter assembly is detachably mounted between the radiator and the air inlet.

Preferably, the chassis comprises a main box body and a first sliding member, wherein the first sliding member is fixed on the main box body at a position corresponding to the airflow channel;

the filter assembly is provided with a second sliding member matched with the first sliding member, and the filter assembly is installed in the airflow channel in a sliding mode through the second sliding member and the first sliding member in a matching mode.

Preferably, the air outlet is located at the top of the chassis, the air inlet is located at the bottom of the chassis, and the fan assembly is mounted at the air outlet; the fan assembly, the radiator and the filtering assembly are sequentially arranged adjacently.

Preferably, the first sliding member includes two guide rail sets respectively disposed on two opposite side walls of the chassis forming the airflow channel, each guide rail set includes two L-shaped guide bars, and the two guide bars are welded to the side walls in a spaced distribution manner; the filter assembly is slidably mounted in the airflow passage by inserting the second sliding member into a gap between the two guide bars.

Preferably, the first sliding member includes a plurality of guide folding lugs formed by two side walls of the chassis forming the airflow channel through a sheet metal working process, a sliding groove matched with the second sliding member is formed by the plurality of guide folding lugs on the two side walls in a surrounding manner, and the filter assembly is slidably mounted in the airflow channel in a manner that the second sliding member is inserted into the sliding groove.

Preferably, the filter assembly includes a mounting bracket having a square ring shape, and a screen member fixedly coupled to the mounting bracket, and the second sliding member is formed of edge portions of a set of opposite sides of the mounting bracket.

Preferably, two opposite side walls of the chassis are respectively provided with three guide folding lugs distributed in a direction perpendicular to the length direction of the airflow channel, the guide folding lugs at two ends of each side wall are located in a first plane, the guide folding lug in the middle is located in a second plane, and the distance between the first plane and the second plane is adapted to the thickness of a second sliding member of the filter assembly; the sliding groove is formed by gaps among the three guide folding lugs.

Preferably, the filter assembly is detachably fixed to the air inlet.

Preferably, the heat sink includes a mounting portion and a heat dissipation fin assembly, and the heat dissipation fin assembly is fixed in the chassis through the mounting portion;

the filter assembly is perpendicular to the airflow passage when the filter assembly is fitted to the airflow passage, and covers the fin assembly in a cross-sectional direction of the airflow passage.

Preferably, the filter assembly further comprises a handle arranged at one end of the assembling support and a plurality of limiting adjusting members arranged at the other end of the assembling support, and when the filter assembly is installed in the airflow channel, the assembling support is limited and fixed in a mode that the limiting adjusting members abut against a back plate of the main box body.

The utility model discloses converter has following beneficial effect: by arranging the filtering component and assembling the filtering component between the radiator and the air inlet, dust in cooling airflow can be filtered by the filtering component, particles and flocculent impurities in the dust are prevented from being accumulated on the radiator, gaps among the radiating fins are effectively prevented from being blocked, the cooling airflow can smoothly flow through the gaps among the radiating fins and transfer heat on the radiating fins, the heat dissipation and cooling of the radiator are realized, and the heat dissipation capacity of the radiator is ensured; in addition, the cooling airflow is not obstructed by the radiator, so that the problem of low circulating flow efficiency of the cooling airflow can be effectively solved, the heat in the case and the heat on the radiating fins can be efficiently transferred to the outside of the case, and the radiating effect of the frequency converter is ensured; because the filter assembly is installed in the case in a detachable mode, the filter assembly can be effectively disassembled and assembled, the cleaning and replacement operation of the filter assembly are facilitated, and the disassembling, assembling and maintaining difficulty is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a frequency converter according to an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a frequency converter according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first sliding member of a frequency converter according to an embodiment of the present invention;

FIG. 4 is a schematic view of the first slide member of FIG. 3 engaged with a filter assembly;

fig. 5 is a schematic structural diagram of a first sliding member of a frequency converter according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the embodiment of the present invention provides a schematic structural diagram of a frequency converter, and the frequency converter can be applied to the field of power electronic devices. Referring to fig. 2, the frequency converter in this embodiment includes a chassis 1, a heat sink 2, a filter assembly 3 (e.g., a filter screen), and a fan assembly 4, where the heat sink 2 includes heat dissipation fins, and the number of the heat dissipation fins may be determined according to actual conditions; the heat dissipation area of the heat sink 2 can be increased by the heat dissipation fins, so that heat exchange with the outside is facilitated, the heat dissipation efficiency is improved, and meanwhile, the heat inside the case 1 can be absorbed, so that the temperature inside the case 1 is lower, and the influence of overhigh temperature on the frequency conversion components (such as an inverter module, a rectifier module or a capacitor and the like) installed in the case 1 is avoided.

The case 1 of the embodiment includes an air inlet, an air outlet, and an airflow channel formed between the air inlet and the air outlet, so that the heat dissipation and cooling in the case 1 can be realized by the airflow channel. And fan unit 4, filter element 3, and radiator 2's radiating fin are located the airflow channel respectively, and fan unit 4 provides the power of the airflow channel between air intake and air outlet, and be driven by fan unit 4 promptly to form the cooling air current that flows in by the air intake, air outlet exhaust in the airflow channel, just inhale the outside air through the air intake and form cooling air current, and the heat in the absorption transfer machine case 1 of cooling air current is discharged through the air outlet again to realize the inside heat dissipation cooling of machine case 1.

In particular, the filter assembly 3 is detachably mounted between the radiator 2 and the air inlet, ensuring that the cooling air flow in the air flow channel can be filtered via the filter assembly 3, so that the cooling air flow flowing through the radiator 2 is less dusty or free of particles and flocks.

Above-mentioned converter is through setting up filtering component 3, and assemble filtering component 3 to radiator 2 towards one side of air intake, thereby can be by the dust in the filtering component 3 filtration cooling air current, avoid granule and the flocculent impurity in the dust to pile up on radiator 2, effectively prevent to block up the clearance between the radiating fin, make the cooling air current can be smooth and easy cross and transfer the heat on the radiating fin by the clearance between the radiating fin, the realization is to the heat dissipation cooling of radiator 2, in order to guarantee radiator 2's heat-sinking capability. And, the cooling air current is not hindered by radiator 2 to can effectively solve the problem that the circulation flow efficiency of cooling air current is low, can transfer the heat in quick-witted case 1 inside and the heat on the radiating fin to quick-witted case 1 outside with high efficiency, guarantee the radiating effect of converter.

Particularly, because the filter assembly 3 is detachably mounted in the case 1, the filter assembly 3 can be effectively disassembled and assembled, the cleaning and replacement operations of the filter assembly 3 are facilitated, and the disassembling, assembling and maintenance difficulty is reduced.

The air outlet of the case 1 of this embodiment is located the top of the case 1, the air inlet is located the bottom of the case 1, and the fan assembly 4 is installed and fixed to the air outlet, thereby the cooling airflow in the case 1 can be rapidly discharged to the outside of the case 1 by the drive of the fan assembly 4, and the heat of the heat radiator 2 and the inside of the case 1 is transferred by the cooling airflow, thereby realizing the heat dissipation and cooling. And, because the air in the chassis 1 is driven and exhausted by the fan assembly 4, the pressure inside the chassis 1 is reduced, and a pressure difference is formed between the air and the outside of the chassis 1, so that the air outside the chassis 1 can be sucked through the air inlet to form a cooling air flow.

Preferably, when the filter assembly 3 is assembled to the airflow channel, the filter assembly 3 is perpendicular to the airflow channel, and the filter assembly 3 is adjacent to the heat sink 2, so that the cooling airflow at the air inlet end of the heat sink 2 can be directly filtered, and the filter effect of the filter assembly 3 on the cooling airflow flowing into the heat sink 2 is prevented from being reduced due to a large distance between the filter assembly 3 and the heat sink 2.

As shown in fig. 3, the cabinet 1 includes a main body 11 and a first sliding member 12 (e.g., a rail), and the first sliding member 12 is fixed to the main body 11 at a position corresponding to the airflow path. The filter assembly 3 has a second sliding member adapted to the first sliding member 12, and the filter assembly 3 is slidably mounted in the airflow passage by the second sliding member being engaged with the first sliding member 12. Above-mentioned converter assembles filtering component 3 to quick-witted incasement 1 through the mode that adopts slidable mounting, can further improve filtering component 3's dismouting and maintain convenience, only need take filtering component 3 out during the maintenance and can wash or change, need not to reserve and maintain the space (or dismantle the device and vacate operating space) to be favorable to using in the limited environment in space, also can effectively lock the volume of converter, possess high practicality.

As shown in fig. 4, in an embodiment of the present invention, the first sliding member 12 includes two rail sets respectively disposed on two opposite side walls of the casing 1, each rail set includes two L-shaped guide bars 121, and the two guide bars 121 are welded to the side walls in a spaced manner. Of course, in practical applications, the guide bars 121 may be fixedly connected to the side walls by other means, such as clamping or bolting.

In particular, the space between the two guide bars 121 on each side wall is adapted to the second sliding member of the filter assembly 3, so that the filter assembly 3 can be slidably mounted in the airflow channel by means of the second sliding member being inserted into the space between the two guide bars 121. The structural design mode of the first sliding component 12 is beneficial to processing and manufacturing of parts, processing difficulty is reduced, and production efficiency is improved.

As shown in fig. 5, in another embodiment of the present invention, the first sliding member 12 includes a plurality of guiding folding lugs 122 formed by two side walls of the chassis 1 through sheet metal processing, and the guiding folding lugs 122 on the two side walls enclose and form a sliding groove adapted to the second sliding member, so that the filter assembly 3 can be slidably mounted in the airflow channel by inserting the second sliding member into the sliding groove. Above-mentioned first sliding member 12's structural design mode is simple reasonable, and first sliding member 12 can with quick-witted case 1 integrated into one piece, has improved the convenience of equipment operation like this greatly, has reduced the equipment spare part, the material management and control of being convenient for.

Two opposite side walls of the chassis 1 of this embodiment are respectively provided with three guide folding lugs 122 distributed and arranged along a length direction perpendicular to the airflow channel, the guide folding lugs 122 at two ends of each side wall are located in a first plane, the guide folding lug 122 in the middle is located in a second plane, and a distance between the first plane and the second plane is adapted to a thickness of a second sliding member of the filter assembly 3. Moreover, the sliding groove is formed by gaps among the three guide folding lugs 122, the first plane is located below the second plane, that is, when the filter assembly 3 is slidably mounted in the airflow channel, the two guide folding lugs 122 located at the two ends are supported below the filter assembly 3, and the guide folding lug 122 located in the middle is limited above the filter assembly 3, so that the strength and the deformation resistance of the first sliding member 12 are improved, and the filter assembly 3 is prevented from falling off due to long-time bearing deformation of the guide folding lug 122.

In particular, the filtering assembly 3 comprises a mounting bracket in the form of a square ring, and a sieve member (for example a wire mesh) fixedly attached to the mounting bracket, preferably removably attached to the mounting bracket, to facilitate replacement of the sieve member. And, the second slide member is constituted by an edge portion of a set of opposite sides of the mounting bracket, i.e., the filter assembly 3 is slidably mounted in the airflow passage by the edge of the set of opposite sides of the mounting bracket in cooperation with the first slide member 12. Above-mentioned filter component 3 constitutes first sliding member 12 through the edge by the assembly support, makes first sliding member 12 and assembly support shaping an organic whole promptly, has not only simplified filter component 3's structural design, still is convenient for manufacturing to effectively reduce the processing degree of difficulty, reduce the equipment fitting part simultaneously, this structural design utensil high practicality.

Of course, in practical applications, the structural design of the second sliding member may be determined according to practical situations, for example, the second sliding member may also be two independently arranged long guide plates, and the two long guide plates are fixedly connected to two sides of the mounting bracket by welding or bolting.

In one embodiment of the present invention, the filter assembly 3 is detachably mounted to the air inlet, so that the cooling air flow entering the box body through the air inlet can be directly filtered.

The heat sink 2 of the present embodiment includes a mount portion and a heat radiation fin assembly fixed in the chassis 1 by the mount portion 2. Specifically, the mounting portion can be connected with a frequency conversion assembly installed in the case 1, so that heat generated by the frequency conversion assembly can be transferred by the radiator 2, the temperature of the frequency conversion assembly is kept to be reduced, and the frequency conversion assembly is prevented from being damaged or influenced by overhigh temperature.

And, when the radiator 2 assembles in the air current channel, the radiating fin of radiator 2 sets up along the length direction in the air current channel, and filtering component 3 covers the air inlet end of radiating fin, preferably covers the whole cross section of air current channel, can further improve the filter effect to the cooling air current of flowing into radiator 2 like this, also avoids too much the piling up of dust to filtering component 3 one side towards radiator 2 simultaneously.

In addition, for the convenience of the disassembly and assembly operation of the filter assembly 3, the filter assembly 3 comprises a handle arranged at one end of the assembling bracket, so that the maintenance operability can be effectively improved.

In addition, the filter assembly 3 further comprises a plurality of limiting adjusting members arranged at the other end of the assembling support, and when the filter assembly 3 is installed in the airflow channel, the assembling support is limited and fixed in a mode that the plurality of limiting adjusting members abut against a back plate of the main box body 11. The limiting adjusting component can be an adjusting bolt, so that the distance between the adjusting bolt and the other end of the assembling support can be adjusted through rotation, the position of the filtering component 3 in the airflow channel is adjusted, the structure is simple and practical, and the operation is convenient and fast.

In practical application, a limit folding edge perpendicular to the main body part of the assembly bracket can be arranged at one end of the assembly bracket where the handle is installed, so that the limit folding edge can be in pressure joint with the upper limit fixed filter component 3 of the case 1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a converter, its characterized in that includes quick-witted case, radiator, filtering component and fan assembly, wherein: the chassis comprises an air inlet, an air outlet and an airflow channel formed between the air inlet and the air outlet, the fan assembly, the filter assembly and the radiator are respectively positioned in the airflow channel, and the fan assembly provides power for the airflow channel between the air inlet and the air outlet; the filter assembly is detachably mounted between the radiator and the air inlet.

2. The frequency converter according to claim 1, wherein the cabinet includes a main housing and a first slide member fixed to the main housing at a position corresponding to the airflow path;

3. The frequency converter according to claim 2, wherein the air outlet is located at a top of the cabinet, the air inlet is located at a bottom of the cabinet, and the fan assembly is mounted at the air outlet; the fan assembly, the radiator and the filtering assembly are sequentially arranged adjacently.

4. The frequency converter according to claim 2, wherein the first sliding member comprises two rail sets respectively disposed on two opposite side walls of the housing forming the airflow channel, each of the rail sets comprises two L-shaped guide bars, and the two guide bars are welded to the side walls in a spaced-apart manner; the filter assembly is slidably mounted in the airflow passage by inserting the second sliding member into a gap between the two guide bars.

5. The frequency converter according to claim 2, wherein the first sliding member comprises a plurality of guiding folding lugs formed by sheet metal processing on two side walls of the chassis forming the airflow channel, a sliding groove matched with the second sliding member is formed by the plurality of guiding folding lugs on the two side walls in a surrounding manner, and the filter assembly is slidably mounted in the airflow channel by inserting the second sliding member into the sliding groove.

6. A frequency converter according to claim 3 or 4, wherein the filter assembly comprises a mounting bracket in the form of a square ring and a screen member fixedly attached to the mounting bracket, and the second slide member is formed by edge portions of a set of opposite sides of the mounting bracket.

7. The frequency converter according to claim 5, wherein two opposite side walls of the housing are respectively provided with three guide folding lugs distributed along a direction perpendicular to the length direction of the airflow channel, the guide folding lugs at two ends of each side wall are located in a first plane, the guide folding lug at the middle is located in a second plane, and the distance between the first plane and the second plane is adapted to the thickness of a second sliding member of the filter assembly; the sliding groove is formed by gaps among the three guide folding lugs.

8. The frequency converter of claim 1, wherein the filter assembly is removably mounted to the intake vent.

9. The frequency converter according to claim 3, wherein the heat sink comprises a mounting portion and a heat fin assembly, the heat fin assembly being fixed within the chassis by the mounting portion;

10. The frequency converter according to claim 6, wherein the filter assembly further comprises a handle provided at one end of the mounting bracket and a plurality of position-limiting adjustment members provided at the other end of the mounting bracket, and when the filter assembly is installed in the airflow passage, the mounting bracket is position-limited and fixed in such a manner that the plurality of position-limiting adjustment members abut against a back plate of the main case.