CN209806317U - Frequency converter - Google Patents

Abstract

The utility model discloses a frequency converter, including the cabinet body (1), the cabinet body (1) includes main cabinet (11) and vice cabinet (12) of rear side of front side, be equipped with functional module and cooling dehumidification radiator (31) in main cabinet (11), be equipped with vice cabinet cooling device in vice cabinet (12), separate through main vice cabinet space bar (13) between main cabinet (11) and vice cabinet (12), be equipped with radiator cartridge mouth (32) on main vice cabinet space bar (13), cooling dehumidification radiator (31) with vice cabinet cooling device's refrigerant pipeline links to each other and passes through but install with pull around radiator cartridge mouth (32) in main cabinet (11). The utility model discloses an among the converter, the cooling dehumidification radiator that sets up in main cabinet can be in the radiator cartridge mouth of main and auxiliary cabinet space bar around pull ground cartridge, easy dismounting just can save the fixed fitting piece to be favorable to improving production maintenance efficiency and save the cost.

Description

Frequency converter

Technical Field

The utility model relates to a converter technical field.

Background

The current converter is in order to improve operational reliability, need cool down the dehumidification in order to prevent that the short circuit from appearing in the internal circuit component to the cabinet chamber environment, consequently correspondingly, needs set up cooling dehumidification radiator in the cabinet chamber.

However, generally, when the cooling and dehumidifying radiator is fixedly installed, a plurality of fixed sheet metal parts are needed to be matched, the dismounting process is time-consuming and labor-consuming, and under the structure, the production assembly efficiency and the dismounting maintenance efficiency of the cooling and dehumidifying radiator are lower, so that the production and maintenance cost is increased to a certain extent.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect or not enough of prior art, the utility model provides a converter through setting up the structure of the dehumidification radiator dismouting of being convenient for cool down, effectively improves its production and maintenance efficiency to effectively save production and cost of maintenance.

In order to achieve the purpose, the utility model provides a frequency converter, the intelligent cabinet temperature adjusting device comprises a cabinet body, the main cabinet of the cabinet body including front side and the vice cabinet of rear side, be equipped with functional module and cooling dehumidification radiator in the main cabinet, be equipped with vice cabinet cooling device in the vice cabinet, separate through main vice cabinet space bar between main cabinet and the vice cabinet, be equipped with radiator cartridge mouth on the main vice cabinet space bar, cooling dehumidification radiator with vice cabinet cooling device's refrigerant pipeline links to each other and passes through but install with pull around the radiator cartridge mouth in the main cabinet.

Optionally, the main cabinet is installed including being equipped with the cabinet body and the detachably of functional module cavity on the horizontal lateral wall of cabinet body and be equipped with the limit cabinet of cooling dehumidification module cavity in, the lateral wall of cabinet body is equipped with the intercommunication the functional module cavity with the lateral wall ventilation hole of cooling dehumidification module cavity, radiator cartridge mouth runs through the setting and is in on the limit cabinet rear panel of limit cabinet.

Optionally, the lateral wall ventilation hole includes lateral wall fresh air inlet and lateral wall exhaust vent, the converter is including setting up the fan that sets up in the lateral wall fresh air inlet towards cooling dehumidification module cavity is bloied, cooling dehumidification module cavity with be formed with between the function module cavity and flow through the lateral wall fresh air inlet with the circulation airflow channel of lateral wall exhaust vent.

Optionally, the heat sink insertion opening is rectangular and disposed obliquely to a horizontal plane.

Optionally, an outer mounting guide plate extending backwards to guide the cooling and dehumidifying radiator to be inserted into the radiator insertion opening is arranged on the outer side of the radiator insertion opening.

Optionally, the cabinet intracavity of main cabinet is equipped with the edge interior installation baffle that the fore-and-aft direction in cabinet chamber extends, the rear end of interior installation baffle extends to radiator cartridge mouth, cooling dehumidification radiator with form sliding fit between the interior installation baffle and be connected.

Optionally, a limiting sealing plate located on the front side of the inner installation guide plate is further arranged in the cabinet cavity, and the front end of the cooling and dehumidifying radiator abuts against the rear plate surface of the limiting sealing plate and is fixedly connected with the limiting sealing plate.

Optionally, the frequency converter includes a water receiving box for receiving condensed water, and the water receiving box and the bottommost end of the cooling and dehumidifying heat exchanger are arranged at an interval.

Optionally, the water receiving box is detachably mounted in the cabinet cavity of the main cabinet, and/or a water receiving box water outlet is formed in the outer wall of the water receiving box in a penetrating mode.

Optionally, the outer wall of the water receiving box is wrapped with a heat insulation structure for heat insulation.

The utility model discloses in, the converter is equipped with main cabinet and vice cabinet that the cavity separates each other for the functional module and the cooling device of converter can install respectively in main cabinet chamber and vice cabinet chamber, thereby realize the subregion and arrange, are favorable to simplifying cabinet intracavity structure and improve the reliability. In addition, the functional module and the cooling device can be mutually independently disassembled and assembled and have larger disassembling and assembling space, so that the installation and maintenance are convenient, the cost can be effectively saved, and the production and maintenance efficiency can be improved. On the other hand, the cooling and dehumidifying radiators arranged in the main cabinet can be directly inserted into the radiator inserting openings of the partition plates of the main cabinet and the auxiliary cabinet in a front-back pulling manner, the dismounting and mounting structure is simple, fixed fitting parts can be greatly saved, and therefore the production and maintenance efficiency is effectively improved to save the cost.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

Fig. 1 is a schematic diagram of an internal structure of a frequency converter having a circulating airflow channel formed therein according to an embodiment of the present invention;

fig. 2 is a top view of a frequency converter provided with a main cabinet and an auxiliary cabinet according to an embodiment of the present invention;

Fig. 3 is another plan view of the frequency converter in fig. 2, wherein a front door body of a main cabinet is in an open state;

FIG. 4 is a rear view of the frequency converter of FIG. 2;

Fig. 5 is a perspective view of the frequency converter with a side cabinet according to the embodiment of the present invention, where the side cabinet is mounted on the cabinet body;

FIG. 6 is another perspective view of the transducer of FIG. 5, with the side cabinet removed from the cabinet body;

FIG. 7 is a perspective view of a side cabinet of the frequency converter of FIG. 5;

Fig. 8 is a perspective view of the frequency converter provided with the cooling and dehumidifying heat sink capable of being drawn back and forth according to the embodiment of the present invention, and the cooling and dehumidifying heat sink is installed in the main cabinet;

FIG. 9 is another perspective view of the inverter of FIG. 8, with the temperature reducing and dehumidifying heat sink being drawn out of the main cabinet;

FIG. 10 is a front perspective view of the transducer of FIG. 8;

Fig. 11 is another front perspective view of the frequency converter of fig. 8.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.

it should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

The invention will be described in detail below with reference to the accompanying drawings in conjunction with exemplary embodiments.

As shown in fig. 1, the present invention provides a frequency converter 100. The frequency converter 100 comprises a cabinet body 1, an air cooling device and a plurality of air duct partition plates 2. Wherein, polylith wind channel baffle 2 separates into a plurality of module cavity with the cabinet chamber, installs different modules in a plurality of module cavity respectively to be equipped with respective module cavity air intake and module cavity air outlet on the wind channel baffle 2 of each module cavity. By providing this structure, a circulating airflow channel can be formed in the cabinet cavity of the frequency converter 100, and the direction of the arrows in the figure indicates the airflow direction of the circulating airflow channel in one embodiment. In addition, an air cooling device for cooling and dehumidifying is disposed in the circulating airflow channel, and the air cooling device may include a fan 66 and a cooling and dehumidifying radiator 31 for cooling and dehumidifying.

During operation of the frequency converter 100, some of the functional modules in the module chamber generate heat. At the moment, the air cooling device is also in a working state, and cold air exhausted from the air exhaust end of the air cooling device can flow into different module cavities through the air inlets and the air outlets of the module cavities and finally flows back to the air exhaust end of the air cooling device, so that the circulating airflow channel for heat dissipation and cooling is formed.

It is thus clear that because of the existence of circulation airflow channel, the cooling dehumidification effect of air cooling device to each functional module is lasting and stable, including relatively independent between each module cavity, can guarantee to possess suitable operational environment temperature in each cavity all the time, reduces the overheated impaired risk of functional module to prolong its life, can also make the reliability of converter improve greatly simultaneously.

Furthermore, compare with current converter, under the prerequisite that reaches same radiating effect, the utility model discloses an air cooling device's among the converter 100 volume of airing exhaust is littleer, means promptly the utility model discloses an air cooling device's noise at work is littleer to can design into littleer volume, thereby save converter 100's production installation cost.

In summary, the frequency converter 100 of the present invention has the advantages of good heat dissipation effect, low working noise, low production and installation cost, etc.

In some embodiments, the module chamber includes the cooling and dehumidifying module chamber 3 for installing the cooling and dehumidifying heat sink 31, but of course, the air cooling device may be installed in other module chambers without the need for a separately installed cooling and dehumidifying module chamber 3. Because the air cooling device can produce continuous vibration at the course of the work, for the adverse effect that this vibration brought the converter of minimizing, can be with cooling dehumidification module cavity 3 preferred setting in the bottom position in cabinet chamber, or further, set up the air cooling device in the bottom position of cooling dehumidification module cavity 3 to improve the overall stability of converter 100.

To save production costs, the number of partitions required can be determined on the basis of the principle of separating as many module chambers as possible with as few duct partitions 2 as possible. Moreover, the relative positions and the communication structures among the module cavities are reasonably arranged so as to reduce airflow resistance in the circulating airflow channel as much as possible and accelerate the heat exchange speed in the channel, thereby further improving the heat dissipation efficiency.

Therefore, in the above embodiment, the cabinet 1 of the frequency converter may be provided in a rectangular parallelepiped shape, and the cooling and dehumidifying module chamber 3 is defined by the air duct partition 2, the cabinet top panel, the cabinet bottom panel, the cabinet front panel, the cabinet rear panel and one of the cabinet side panels. Further, still can be equipped with other wind channel baffle 2 between cabinet body front panel and the cooling dehumidification radiator 31, the user is opening cabinet body front panel back, because this wind channel baffle 2's separation, can avoid directly touching cooling dehumidification radiator 31.

It can be seen that the number of the air duct partition plates 2 can be effectively saved by using different panels of the cabinet body 1 as partition plates, and the cooling and dehumidifying module chambers 3 are arranged at the side positions in the inner cavity of the cabinet body 1, so that the reasonable arrangement and communication of other module chambers can be facilitated.

in addition, the air cooling device may include a fan 66 and a cooling and dehumidifying radiator 31, and the cooling and dehumidifying radiator 31 may be disposed on the exhaust side or the suction side of the fan 66. The low-temperature gas cooled by the temperature-reducing dehumidifying radiator 31 can flow rapidly along the circulating airflow channel under the driving of the fan 66. In the above embodiment, the cooling and dehumidifying radiator 31 may be installed between the fan 66 and the side panel of the cabinet 1, or the fan 66 may be installed between the cooling and dehumidifying radiator 31 and the side panel of the cabinet 1, or both the cooling and dehumidifying radiator 31 and the fan 66 may be installed on the air duct partition.

further, cooling dehumidification module cavity 3 the module cavity air outlet with the module cavity air intake sets up from top to bottom cooling dehumidification module cavity 3 on the wind channel baffle 2, fan 66 installs cooling dehumidification module cavity 3 on the module cavity air intake. The reason for this structure is to avoid the fan 66 from blowing the condensed water on the cooling and dehumidifying radiator 31 to other module cavities, and to prevent short circuit of other functional modules, thereby improving the stability and reliability of the frequency converter 100. Or, in the case that the fan 66 may blow the condensed water on the cooling and dehumidifying radiator 31 to other module chambers, a corresponding water-blocking structure may be additionally provided.

The following will use the arrangement structure of each module cavity of the frequency converter 100 in the drawings as an exemplary illustration of the present invention, and in fact, each module cavity in the frequency converter 100 of the present invention can be set to other different arrangement structures, but it must be ensured that a circulating airflow channel for cooling and dehumidifying is formed in the inner cavity of the cabinet body 1.

As shown in fig. 1, the module chambers further include a first functional module chamber 4, a second functional module chamber 5, a third functional module chamber 6, and a fourth functional module chamber 7. The first functional module chamber 4, the second functional module chamber 5 and the third functional module chamber 6 are sequentially arranged from top to bottom, and the left side and the right side are respectively adjacent to the cooling and dehumidifying module chamber 3 and the fourth functional module chamber 7.

The first functional module chamber 4, the second functional module chamber 5 and the third functional module chamber 6 are respectively communicated with the cooling and dehumidifying module chamber 3 and the fourth functional module chamber 7 through the respective vent holes (i.e. the module chamber air inlet or the module chamber air outlet) on the air duct partition plate 2.

in the operating state of the frequency converter 100, the cold air discharged from the air discharge side of the air cooling device is blown out from the cooling and dehumidifying module chamber 3, and then divided into two paths to flow to the first functional module chamber 4 and the second functional module chamber 5 respectively. Subsequently, the cool air blown out from the first and second functional module chambers 4 and 5 is collected into the fourth functional module chamber 7. Then, the cold air blown out from the fourth functional module chamber 7 flows back to the air draft side of the air cooling device after passing through the third functional module chamber 6, thereby completing one-time complete air flow circulation flow.

Specifically, the frequency converter 100 includes a main control board 41 and an IGBT module 42 disposed in the first functional module chamber 4, a capacitance module 51 disposed in the second functional module chamber 5, a diode 65 and a contactor 61 disposed in the third functional module chamber 6, and a circuit breaker 71 disposed in the fourth functional module chamber 7, and a reactor 9 is further provided between the third functional module chamber 6 and the fourth functional module chamber 7.

It should be noted that, in the frequency converter 100, the IGBT module 42, the capacitor module 51, and the diode 65 are all functional modules with relatively large heat generation, and in order to avoid an excessive ambient temperature in a single module chamber, the three functional modules need to be arranged in a spaced manner.

Thus, the frequency converter 100 in the illustrated embodiment provides the IGBT-module 42 in the first functional module chamber 4, the capacitor module 51 in the second functional module chamber 5 and the diode 65 in the third functional module chamber 6.

Further, because the capacitance module 51 and the circuit breaker 71 have relatively large volumes, and the circuit breaker 71 needs to be separately isolated according to safety requirements. The capacitor module 51 is thus arranged separately in the second functional module chamber 5, while the circuit breaker 71 is arranged separately in the fourth functional module chamber 7.

And the functional modules with smaller volume and heat productivity can be combined and arranged in the same chamber according to the actual situation. For example, in the above structure, the main control board 41 and the IGBT module 42 may be disposed in combination in the first functional module chamber 4, and the diode 65 and the contactor 61 may be disposed in combination in the third functional module chamber 6.

as for the reactor 9, due to its relatively large volume, it may be arranged in a bottom position (between the third functional module chamber 6 and the fourth functional module chamber 7) to increase the mounting stability, so that the respective functional modules in the frequency converter 100 have a relatively reasonable arrangement.

for the IGBT module 42 and the diode 65 with a large heat productivity, a heat sink may be further provided to further increase the heat dissipation speed, and the heat sink may be a micro-channel heat sink or a fin heat sink, where the micro-channel heat sink is provided with a micro-channel flat tube for the circulation of a refrigerant.

In addition, the aperture sizes of the module cavity air inlet and the module cavity air outlet can be determined according to different heat productivity of different module cavities, or the aperture sizes of the module cavity air inlet and the module cavity air outlet can be adjusted in real time, so that the temperature in each module cavity is uniform, condensation caused by local supercooling in a cabinet cavity is avoided, short circuit of circuit elements is avoided, and the reliability of the frequency converter 100 is improved.

In one embodiment, as shown in fig. 2-4, the frequency converter 100 includes a main cabinet 11 and a sub-cabinet 12. The main cabinet 11 is located at the front side of the frequency converter 100 and is provided with a functional module inside, and the aforementioned circulating airflow channel is formed in the main cabinet cavity. The sub-cabinet 12 is located at the rear side of the frequency converter 100, and the main cabinet 11 and the sub-cabinet 12 are separated from each other by a main-sub-cabinet partition plate 13. In addition, inverter 100 includes an inverter cooling system including a sub-cabinet cooling arrangement disposed within sub-cabinet 12.

Through being equipped with main cabinet 11 and vice cabinet 12 that the cavity separates each other in converter 100 for converter 100's functional module and cooling device can install respectively in main cabinet chamber and vice cabinet chamber, thereby realize the subregion and arrange, are favorable to simplifying cabinet intracavity structure and improve the reliability. In addition, the functional module and the cooling device can be mutually independently disassembled and assembled and have larger disassembling and assembling space, so that the installation and maintenance are convenient, the cost can be effectively saved, and the production and maintenance efficiency can be improved.

The rectangular parallelepiped inverter 100 includes a rectangular outer case, and in this case, a main cabinet partition plate 13 and a sub cabinet partition plate 13 are provided in the outer case to partition a main cabinet 11 and a sub cabinet 12, the main cabinet 11 includes a main cabinet front door 111, and the sub cabinet 12 includes a sub cabinet rear cover 121.

Therefore, when the parts arranged in the main cabinet cavity need to be disassembled and assembled, the front door body 111 of the main cabinet can be opened independently, and the parts in the auxiliary cabinet cavity are not affected. When the parts arranged in the auxiliary cabinet cavity need to be disassembled and assembled, the rear cover plate 121 of the auxiliary cabinet can be opened independently, and the parts in the main cabinet cavity are not affected at the moment. Or, the main cabinet front door body 111 and the auxiliary cabinet rear cover plate 121 can be opened simultaneously to disassemble and assemble the parts in the main cabinet cavity and the auxiliary cabinet cavity simultaneously, so that the disassembling and assembling efficiency is effectively improved.

In addition, the frequency converter 100 further includes a main cabinet partition plate as the air duct partition plate 2, the main cabinet partition plate is a partition plate between the cooling and dehumidifying module cavity 3 and the functional module cavity, and the cooling system of the frequency converter 100 further includes a cooling and dehumidifying radiator 31 installed in the cooling and dehumidifying module cavity 3.

Further, a plurality of IGBTs 421 arranged at intervals in the transverse direction and a plurality of diodes 65 arranged side by side in the transverse direction are installed in the functional module chamber, and the plurality of IGBTs 421 and the plurality of diodes 65 are installed on the front side plate surface of the main and auxiliary cabinet partition plate 13 at intervals in the vertical direction. The sub-tank cooling device includes a diode radiator 122 and a plurality of IGBT radiators 123 provided on the rear side plate face of the main-sub tank partition plate 13.

In order to prevent the multiple IGBTs 421 from being too cold in the partition area on the partition board 13 of the main and sub cabinets to generate condensation, the multiple IGBT radiators 123 are correspondingly arranged in a transverse interval manner and are aligned with the multiple IGBTs 421 one by one in the front-back direction, that is, the IGBT radiators 123 are arranged in a split manner. The diodes 65 are in a parallel structure that are continuously arranged side by side in the transverse direction, so the diode radiator 122 is correspondingly configured to be in a long shape that continuously extends in the transverse direction and is arranged in alignment with the plurality of diodes 65 in the front-back direction, that is, the diode radiator 122 is arranged continuously, thereby realizing special heat dissipation for the IGBT421 and the diode 65 with large heat generation.

further, both the IGBT radiator 123 and the diode radiator 122 may be microchannel radiators, and the microchannel radiators include microchannel flat tubes for coolant circulation, which has a large heat exchange area and high cooling efficiency, and is beneficial to improving the reliability of the IGBT421 and the diode 65.

Some manufacturers will design the IGBT421 as a long block, and in the frequency converter 100 of the present embodiment, the long block shaped IGBT421 is installed in a vertical arrangement. At this time, in order to increase the heat transfer area of the IGBT radiator 123 and increase the cooling efficiency, the microchannel flat tubes of the IGBT radiator 123 may be correspondingly configured to be vertically long blocks.

at this time, the IGBT radiator 123 is configured in a split arrangement, which not only prevents condensation from being generated due to supercooling of the plurality of IGBTs 421 in the partition regions of the main and sub cabinets 13, but also considers that the long and wide microchannel flat tubes are difficult to machine. Even for the split IGBT radiator 123, the length thereof is not too large, and therefore the vertical length of the microchannel flat tubes of the IGBT radiator 123 may preferably be set to be not less than 200 mm.

further, to increase the heat exchange area to improve the cooling efficiency, the plurality of diodes 65 fall within the outer contour region of the diode radiator 122 and the IGBTs 421 fall within the outer contour region of the corresponding IGBT radiator 123 in the projection in the front-rear direction.

On the other hand, the diode radiator 122 and the plurality of IGBT radiators 123 can be arranged symmetrically with respect to the vertical center line of the main and auxiliary cabinet partition plate 13, so that the structure is more uniform, reasonable and beautiful.

specifically, the inverter cooling system further includes a refrigerant inlet and a refrigerant outlet disposed on an outer wall of the sub-cabinet 12, and a refrigerant pipe disposed between the refrigerant inlet and the refrigerant outlet. The refrigerant pipelines include a plurality of IGBT refrigerant pipelines flowing through a plurality of IGBT radiators 123, a diode refrigerant pipeline flowing through a diode radiator 122, and a cooling and dehumidifying refrigerant pipeline flowing through a cooling and dehumidifying radiator 31. A plurality of IGBT refrigerant pipelines, diode refrigerant pipelines and cooling and dehumidifying refrigerant pipelines are arranged in parallel, and the heat dissipation effect of each heating component is guaranteed.

Furthermore, the IGBT refrigerant pipeline, the diode refrigerant pipeline and the cooling and dehumidifying refrigerant pipeline are respectively provided with corresponding throttling devices for adjusting the refrigerant flow in the refrigerant pipeline according to different heat productivity, so that intelligent cooling and heat dissipation are realized.

In addition, the diode radiator 122 and the IGBT radiator 123 may also be fin radiators, but a fan needs to be provided to quickly remove heat in the sub-cabinet chamber. In other words, the cooling device of the sub-cabinet may include various heat dissipation methods, such as air cooling heat dissipation or refrigerant heat dissipation, and the most suitable heat dissipation structure is determined according to different situations during design.

In one embodiment, as shown in fig. 5 to 7, the frequency converter 100 includes a cabinet body 14 and a side cabinet 15, the cabinet body 14 includes a function module chamber with a function module built therein, a side wall of the cabinet body 14 is provided with a side wall vent, which is the above-mentioned module chamber air inlet or module chamber air outlet, and the side cabinet 15 is detachably mounted on the side wall of the cabinet body 14. Wherein, side cabinet 15 is equipped with cooling dehumidification module cavity 3 of cooling dehumidification radiator 31 in including, and cooling dehumidification module cavity 3 passes through lateral wall ventilation hole and functional module cavity intercommunication.

It should be noted that the side cabinet 15 may be an upper side cabinet, a lower side cabinet, a front side cabinet, a rear side cabinet, or a transverse side cabinet of the frequency converter 100, or a side cabinet in another direction.

The utility model discloses in, converter 100 is equipped with detachably and installs limit cabinet 15 on cabinet body 14, and the function module cavity that is equipped with function module in cooling dehumidification module cavity 3 that is equipped with cooling dehumidification radiator 31 in this limit cabinet 15 and cabinet body 14 passes through lateral wall ventilation hole intercommunication. Under this structure, because the inside circulation air current passageway of a plurality of lateral wall vent holes of accessible, converter 100 need not with external air current intercommunication, can guarantee the heat dissipation of dehumidification to the function module cavity to guarantee that converter 100 can stable work under the special environment such as the great or high temperature and high humidity of dust. In a common environment, the side cabinet 15 does not need to be configured, and at this time, the functional module chamber can be communicated with external air flow through the side wall vent holes on the cabinet body 14, namely, external air cooling is adopted for heat dissipation. In other words, the utility model discloses a limit cabinet 15 can be installed selectively according to the operating mode environment of difference to converter 100, and the commonality is high, can save use cost to a certain extent.

In order to ensure that an internal circulation airflow channel is formed, the side cabinet 15 and the cabinet body 14 are not communicated with the external air flow, and therefore, external sealing connection is formed between the side cabinet 15 and the cabinet body 14.

In some embodiments, the side cabinet 15 is a lateral side cabinet of the frequency converter 100, and when the lateral side cabinet is mounted to the side of the cabinet body 14, the circulating airflow channel in the foregoing embodiments is formed in the frequency converter 100. Specifically, a first functional module chamber 4, a second functional module chamber 5 and a third functional module chamber 6 which are vertically and vertically separated from each other in a layered manner are formed in the functional module chambers. The side wall vents include a first side wall vent 141, a second side wall vent 142, and a third side wall vent 143 that respectively communicate with the first functional module chamber 4, the second functional module chamber 5, and the third functional module chamber 6.

In addition, a vertical fourth functional module chamber 7 is formed in the functional module chamber relative to the transverse far end of the side cabinet 15, and the fourth functional module chamber 7 is respectively in airflow communication with the first functional module chamber 4, the second functional module chamber 5 and the third functional module chamber 6.

Further, a fan 66 is installed in the third side wall ventilation hole 143, and the fan 66 can blow air into the cooling and dehumidifying module chamber 3. Alternatively, the fan 66 may be disposed in the cooling and dehumidifying module chamber 3, i.e., belonging to the structure in the side cabinet 15. The first functional module chamber 4 is mounted with the IGBT module 42, the second functional module chamber 5 is mounted with the capacitor module 51, and the third functional module chamber 6 is mounted with the diode 65 and the contactor 61. The fourth functional module chamber 7 is fitted with a circuit breaker 71.

Preferably, a splitter plate 151 is further disposed in the side cabinet 15, the splitter plate 151 is disposed between the first side wall vent hole 141 and the second side wall vent hole 142, a part of the cooling airflow passing through the cooling and dehumidifying heat sink 31 flows to the second functional module chamber 5 through the second side wall vent hole 142, and the other part of the cooling airflow sequentially flows to the first functional module chamber 4 through the splitter hole 152 and the first side wall vent hole 141 on the splitter plate 151, so as to reasonably distribute the air volume flowing to the first functional module chamber 4 and the second functional module chamber 5, so that the temperature of each chamber is relatively uniform, and condensation is prevented from being generated.

In addition, the frequency converter 100 further includes a frequency converter cooling system, and the frequency converter cooling system includes a cooling and dehumidifying radiator 31 and a functional module radiator installed on the rear side panel of the cabinet body rear panel of the cabinet body 14, and the functional module radiator includes an IGBT radiator or a diode radiator, etc.

In one embodiment, as shown in fig. 8 to 11, the cabinet body 1 of the frequency converter 100 includes a main cabinet 11 on the front side and a sub cabinet 12 on the rear side, a functional module and a cooling and dehumidifying heat sink 31 are disposed in the main cabinet 11, a sub cabinet cooling device is disposed in the sub cabinet 12, the main cabinet 11 and the sub cabinet 12 are separated by a main cabinet partition plate 13 and a sub cabinet partition plate 13, the main cabinet partition plate 13 and the sub cabinet partition plate 13 are provided with heat sink insertion openings 32, and the cooling and dehumidifying heat sink 31 is connected to a refrigerant pipeline of the sub cabinet cooling device and is installed in the main cabinet 11 in a manner of being capable of being drawn back and forth through the heat sink insertion openings 32.

Through setting up above-mentioned structure, converter 100 is equipped with main cabinet 11 and vice cabinet 12 that the cavity separates each other for converter 100's functional module and cooling device can install respectively in main cabinet chamber and vice cabinet chamber, thereby realize the subregion and arrange, are favorable to simplifying cabinet intracavity structure and improve the reliability. In addition, the functional module and the cooling device can be mutually independently disassembled and assembled and have larger disassembling and assembling space, so that the installation and maintenance are convenient, the cost can be effectively saved, and the production and maintenance efficiency can be improved. On the other hand, the cooling and dehumidifying radiators 31 arranged in the main cabinet 11 can be directly inserted into the radiator inserting openings 32 of the main cabinet partition plate 13 in a front-back pulling manner, the dismounting and mounting structure is simple, and fixed fitting parts can be greatly saved, so that the production and maintenance efficiency is effectively improved to save the cost.

In some embodiments, the main cabinet 11 may include the cabinet body 14 and the side cabinet 15, in which case the heat sink insertion opening 32 is disposed through the rear panel of the side cabinet 15, and the cooling and dehumidifying heat sink 31 is mounted in the cavity of the side cabinet 15 in a manner of being able to be drawn back and forth.

In some embodiments, the heat sink insert opening 32 is rectangular in shape and disposed oblique to a horizontal plane. In other words, the cooling dehumidification radiator 31 is also disposed obliquely, so as to facilitate the flow of the airflow in the cooling dehumidification module chamber 3.

To facilitate the installation of the temperature reducing dehumidifying heat sink 31, an outer installation guide 33 protruding rearward may be provided outside the heat sink insertion opening 32, and the outer installation guide 33 may guide the insertion of the temperature reducing dehumidifying heat sink 31 into the heat sink insertion opening 32. In the installation process, the outer installation guide plate 33 can position and support the cooling and dehumidifying radiator 31, so that the assembly and disassembly are more convenient and labor-saving.

In addition, an inner installation guide plate 34 extending along the front-rear direction of the cabinet cavity is arranged in the cabinet cavity of the main cabinet 11, the rear end of the inner installation guide plate 34 extends to the radiator insertion opening 32, and the cooling and dehumidifying radiator 31 and the inner installation guide plate 34 are connected in a sliding fit manner. Through this sliding fit connection, the cooling dehumidifying heat sink 31 can be installed in the cabinet cavity in a back-and-forth drawing manner. During operation of the frequency converter 100, the inner mounting guide plate 34 may provide a seal to prevent air leakage.

Furthermore, a limit sealing plate 35 positioned at the front side of the inner installation guide plate 34 is further arranged in the cabinet cavity, and the front end of the cooling and dehumidifying radiator 31 abuts against the rear plate surface of the limit sealing plate 35 and is fixedly connected with the limit sealing plate 35. Meanwhile, the limiting sealing plate can also play a role in sealing, so that air leakage is effectively prevented.

Since the high-temperature air flow in the frequency converter 100 is condensed when passing through the temperature-reducing dehumidifying radiator 31, a water receiving box 36 is required to receive the condensed water. Otherwise, under the action of the fan 66, condensed water may flow into the functional module chamber, which greatly increases the risk of short-circuiting of the frequency converter 100. Preferably, the water receiving box 36 is spaced from the bottom end of the cooling and dehumidifying radiator 31 to ensure that the condensed water can be received. In addition, a water receiving box 36 can be arranged in other areas in the cabinet cavity and used for receiving condensed water generated in other areas.

Further, the water receiving box 36 is arranged to be detachably mounted in the cabinet cavity of the main cabinet 11, so that when the box cavity is full of water, the water receiving box is convenient to remove and clean. Or, a water receiving box water outlet 37 may be directly arranged on the outer wall of the water receiving box 36 in a penetrating manner, and the condensed water in the water receiving box 36 can be controlled to be discharged outside at any time by externally connecting a water discharge pipe to the water receiving box water outlet 37. Alternatively, a water receiving box drain port 37 may be provided in the detachable water receiving box 36.

In addition, can wrap up on the outer wall of water receiving box 36 and set up the thermal-insulated insulation construction that is used for thermal-insulated heat preservation to maintain the suitable temperature in the cabinet chamber, be favorable to the normal work of the functional module in the cabinet chamber.

The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that, in the above-mentioned embodiments, the various technical features described in the above-mentioned embodiments can be combined in any suitable way without contradiction, and in order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims (10)

1. The utility model provides a frequency converter, includes the cabinet body (1), its characterized in that, the cabinet body (1) includes main cabinet (11) and the vice cabinet (12) of rear side of front side, be equipped with functional module and cooling dehumidification radiator (31) in main cabinet (11), be equipped with vice cabinet cooling device in vice cabinet (12), separate through main vice cabinet space bar (13) between main cabinet (11) and vice cabinet (12), be equipped with radiator cartridge mouth (32) on main vice cabinet space bar (13), cooling dehumidification radiator (31) with vice cabinet cooling device's refrigerant pipeline links to each other and passes through but install with pull around radiator cartridge mouth (32) in main cabinet (11).

2. The frequency converter according to claim 1, wherein the main cabinet (11) comprises a cabinet body (14) provided with a functional module chamber therein and a side cabinet (15) detachably mounted on the lateral side wall of the cabinet body (14) and provided with a cooling and dehumidifying module chamber (3) therein, the side wall of the cabinet body (14) is provided with a side wall ventilation hole for communicating the functional module chamber and the cooling and dehumidifying module chamber (3), and the heat sink insertion port (32) is penetratingly disposed on the side cabinet rear panel of the side cabinet (15).

3. The frequency converter according to claim 2, characterized in that the side wall ventilation holes comprise side wall air inlet holes and side wall air outlet holes, the frequency converter (100) comprises a fan (66) arranged on the side wall air inlet holes for blowing air towards the cooling and dehumidifying module chamber (3), and a circulating air flow channel passing through the side wall air inlet holes and the side wall air outlet holes is formed between the cooling and dehumidifying module chamber (3) and the function module chamber.

4. Frequency converter according to claim 1, characterized in that the radiator insertion opening (32) is rectangular in shape and is arranged obliquely to the horizontal plane.

5. The frequency converter according to claim 1, characterized in that the outside of the radiator insertion opening (32) is provided with an external mounting guide plate (33) which extends backwards for guiding the cooling and dehumidifying radiator (31) to be inserted into the radiator insertion opening (32).

6. The frequency converter according to claim 1, characterized in that an inner installation guide plate (34) extending along the front-rear direction of the cabinet cavity is arranged in the cabinet cavity of the main cabinet (11), the rear end of the inner installation guide plate (34) extends to the heat sink insertion opening (32), and the cooling and dehumidifying heat sink (31) and the inner installation guide plate (34) are connected in a sliding fit manner.

7. The frequency converter according to claim 6, wherein a limit sealing plate (35) is further disposed in the cabinet cavity and located at a front side of the inner installation guide plate (34), and a front end of the cooling and dehumidifying heat sink (31) abuts against a rear plate surface of the limit sealing plate (35) and forms a fixed connection with the limit sealing plate (35).

8. The frequency converter according to claim 1, wherein the frequency converter (100) comprises a water receiving box (36) for receiving condensed water, and the water receiving box (36) is arranged at a distance from the lowest end of the cooling and dehumidifying radiator (31).

9. The frequency converter according to claim 8, characterized in that the water receiving box (36) is detachably mounted in the cabinet cavity of the main cabinet (11), and/or a water receiving box water outlet (37) is arranged on the outer wall of the water receiving box (36) in a penetrating way.

10. The frequency converter according to claim 8, characterized in that the outer wall of the water receiving box (36) is wrapped with a heat insulation structure for heat insulation.