CN223744569U - Water-cooled frequency converter - Google Patents

Abstract

This utility model relates to the field of frequency converter technology, and provides a water-cooled frequency converter, including a housing, capacitor modules, a cooling fan assembly, a module to be water-cooled, and a water-cooled radiator. The housing has a receiving cavity, and the capacitor modules, the cooling fan, and the water-cooled radiator are arranged sequentially from top to bottom along the height direction of the housing within the receiving cavity. The module to be water-cooled is disposed on the water-cooled radiator for heat exchange. The capacitor modules and the module to be water-cooled are distributed vertically within the housing for reasonable partitioning. Simultaneously, the water-cooled radiator dissipates heat from the module to be water-cooled, and the cooling fan assembly facilitates airflow within the receiving cavity. The water-cooled frequency converter provided by this application has a more rational layout and operates at a lower temperature.

Description

Water-cooled frequency converter

Technical Field

The utility model relates to the technical field of frequency conversion devices, and particularly provides a water-cooled frequency converter.

Background

The high-power frequency converter generates certain power consumption in the operation process, and the power consumption is generally 3-5% of the capacity of the high-power frequency converter. The phase-shifting transformer accounts for about 45%, the rectification and inversion accounts for about 40%, and the control system, the main loop cable, the copper bars and the like account for about 15%.

The heat dissipation mode of the high-power frequency converter mainly comprises three modes of natural cooling, forced air cooling and water cooling. The heat dissipation mode of the domestic high-power frequency converter is mainly forced air cooling. With the continuous development of the domestic frequency converter technology in recent years, the capacity of the frequency converter is continuously improved, forced air cooling heat dissipation is affected by various reasons such as the area of the radiator, the ambient temperature, the use environment of the frequency converter, the volume of a fan, noise and the like, and the heat dissipation requirement of a high-power frequency converter cannot be completely met.

Among the various factors affecting the reliability of the high-power frequency converter, heat dissipation is critical, and heat generated when the high-power semiconductor device and the phase-shifting transformer work can cause the temperature of the device to rise, if proper heat dissipation measures are not adopted to timely take away the heat, the temperature of the device can possibly exceed the highest junction temperature allowed by the device, so that the performance of the device is deteriorated or even damaged. Therefore, in the design, a proper heat dissipation mode is selected, and reasonable design is performed, so that the service life of the device can be effectively prolonged, and the device is one of the essential links for improving the reliability of the frequency converter.

Disclosure of utility model

The utility model aims to provide a water-cooled frequency converter, and aims to solve the problem that the conventional water-cooled frequency converter is unreasonable in layout.

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

The embodiment of the application provides a water-cooling frequency converter, which comprises a box body, a capacitor module, a cooling fan assembly, a to-be-water-cooled module and a water-cooling radiator, wherein the box body is provided with a containing cavity, the capacitor module, the cooling fan assembly and the water-cooling radiator are sequentially arranged in the containing cavity from top to bottom along the height direction of the box body, and the to-be-water-cooled module is arranged on the water-cooling radiator so as to exchange heat with the water-cooling radiator.

The water-cooling frequency converter has the beneficial effects that the capacitor module and the to-be-water-cooled module are distributed up and down in the box body to perform reasonable partition, meanwhile, the water-cooling radiator can radiate heat of the to-be-water-cooled module, and meanwhile, the radiating fan assembly is utilized to realize ventilation in the accommodating cavity. The water-cooled frequency converter provided by the utility model is more reasonable in layout and lower in working temperature.

In some embodiments, the box body is provided with a plugging slot, the cooling fan assembly comprises a bracket and a plurality of fan main bodies erected on the bracket, and the bracket is plugged in the plugging slot.

In some embodiments, the cooling module to be cooled includes an inverter module, a rectifier bridge, a contactor disposed on the rectifier bridge, and a buffer resistor, and the fan body is disposed between the inverter module and the rectifier bridge.

In some embodiments, the capacitor module comprises a fixed plate, a plurality of capacitor bodies arranged on the fixed plate in an array, a positive capacitor copper busbar, a negative capacitor copper busbar and a neutral capacitor copper busbar connected to the capacitor bodies, and a first insulating spacer covered on the neutral capacitor copper busbar and a second insulating spacer covered on the positive capacitor copper busbar, or

The fixed plate is also provided with a equalizing resistor or

And the fixed plate is also provided with a capacitor cooling fan, and the capacitor cooling fan is adjacently arranged on the cooling fan component.

In some embodiments, the capacitor module further includes a capacitor negative support copper bar and a capacitor positive support copper bar that are disposed adjacent to each other, where the capacitor negative support copper bar, the capacitor positive support copper bar, and the capacitor positive bus copper bar are disposed on opposite sides of the capacitor main body.

In some embodiments, the water-cooled frequency converter includes a 3-phase output base copper bar, a 3-phase output bridge copper bar, a U-phase output boost copper bar, a V-phase output boost copper bar, a W-phase output boost copper bar, a 3-phase input base copper bar, a rectifying positive copper bar, a rectifying negative copper bar, a T-phase input boost copper bar, an S-phase input boost copper bar, an R-phase input boost copper bar, a rectifying negative inlet contactor copper bar, an outlet contactor copper bar, a rectifying absorption capacitor, an inverting absorption capacitor, a 3-phase output base copper bar sheet metal support bridge, a third insulating spacer, and a rectifying positive boost copper bar.

In some embodiments, the water-cooled frequency converter further comprises an R-phase input copper bar, an S-phase input copper bar, a T-phase input copper bar, a positive one copper bar, a positive two copper bar, a U-phase output copper bar, a V-phase output copper bar, a W-phase output copper bar, a current sensor, an input/output copper bar plastic fixing seat, a W-phase current sensor mounting copper bar, a V-phase current sensor mounting copper bar, a U-phase current sensor mounting copper bar, a positive one and two short circuit copper bars, an input/output copper bar mounting sheet metal, and an input/output wiring conversion copper bar.

In some embodiments, the water-cooled frequency converter further comprises an input-output module, an L-shaped negative copper bar, a straight negative copper bar, a fourth insulating spacer, an L-shaped positive copper bar, a straight positive copper bar, and a fifth insulating spacer.

In some embodiments, the accommodating cavity comprises a first heat dissipation cavity and a second heat dissipation cavity communicated with the first heat dissipation cavity, the capacitor module is arranged in the first heat dissipation cavity, the inverter module and the cooling module to be water-cooled are arranged in the second heat dissipation cavity, and an air draft fan is arranged on the box body to enable external cold air to enter the first heat dissipation cavity and the second heat dissipation cavity, or

The water-cooling frequency converter further comprises a hanging ring arranged on the box body, a PCB (printed circuit board) arranged in the second heat dissipation cavity, a metal plate shielding plate and a wind shielding epoxy plate.

In some embodiments, the case includes upper and lower covers disposed opposite to each other, and upper and lower hanging plates, and a case handle and a ground terminal are further disposed on the case.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a water-cooled inverter according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a capacitor module of a water-cooled frequency converter according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a water-cooled frequency converter according to an embodiment of the present utility model;

Fig. 4 is a schematic structural diagram of another angle of the water-cooled frequency converter according to the embodiment of the present utility model;

Fig. 5 is a schematic structural diagram of a water-cooled inverter according to another embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a water-cooled inverter according to an embodiment of the present utility model;

Fig. 7 is a schematic structural diagram of other angles of a water-cooled inverter according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1. A capacitance module; 2, an inversion module; 3, a heat radiation fan assembly; the rectifier bridge, 5, buffer resistor, 6, contactor, 7, box, 8, water cooling radiator, 9, capacitor heat dissipation fan, 11, capacitor positive mother copper bar, 12, capacitor negative mother copper bar, 13, fixed plate, 15, equalizing resistor, 16, capacitor main body, 17, capacitor neutral mother copper bar, 18, first insulating spacer, 19, second insulating spacer, 21, capacitor negative support copper bar, 22, capacitor positive support copper bar, 23, 3 phase output basic copper bar, 24, 3 phase output bridge copper bar, 25, U phase output boost copper bar, 26, V phase output boost copper bar, 27, W phase output boost copper bar, 28, 3 phase input basic copper bar, 29, rectifier positive copper bar, 30, rectifier negative copper bar, 31, T phase input boost copper bar, 32, S phase input boost copper bar, 33, R phase input boost copper bar, 34, rectifier negative lead copper bar, 35, output contactor copper bar, 36, rectifier absorption capacitor, 37, inverter capacitor, 38, phase output support copper bar, 40, W phase output support copper bar, W phase output positive and V phase output lead copper bar, 35, W phase input lead copper bar, W phase input lead, V phase input lead copper bar, V phase input lead, V phase input lead, V input lead, V input, V, input, and, and, the device comprises an L-shaped negative copper bar, 61, a straight-shaped negative copper bar, 62, a fourth insulating spacer, 63, an L-shaped positive copper bar, 64, a straight-shaped positive copper bar, 65, a fifth insulating spacer, 66, an air draft fan, 67, a hanging ring, 68, a PCB (printed circuit board), 69, a metal plate shielding plate, 70, a first heat dissipation cavity, 71, a second heat dissipation cavity, 72, a wind shielding epoxy plate, 73, an upper cover, 74, a lower cover, 75, a case handle, 76, an upper hanging plate, 77, a lower hanging plate, 78 and a grounding terminal.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 7, the water-cooled inverter provided by the embodiment of the application comprises a box 7, a capacitor module 1, a cooling fan assembly 3, a to-be-cooled module and a water-cooled radiator 8, wherein the box 7 is provided with a containing cavity, the capacitor module 1, the cooling fan assembly 3 and the water-cooled radiator 8 are sequentially arranged in the containing cavity from top to bottom along the height direction of the box 7, and the to-be-cooled module is arranged on the water-cooled radiator 8 to exchange heat with the water-cooled radiator 8.

According to the water-cooling frequency converter provided by the utility model, the capacitor module 1 and the to-be-water-cooled module are distributed up and down in the box 7 so as to be reasonably partitioned, meanwhile, the water-cooling radiator 8 can radiate heat of the to-be-water-cooled module, and meanwhile, the cooling fan assembly 3 is utilized to realize air circulation in the accommodating cavity. The water-cooled frequency converter provided by the utility model is more reasonable in layout and lower in working temperature.

Referring to fig. 1 to 7, in some embodiments, the box 7 is provided with a socket, and the cooling fan assembly 3 includes a bracket and a plurality of fan bodies standing on the bracket.

Referring to fig. 1 to 7, in some embodiments, the module to be cooled by water cooling includes an inverter module 2, a rectifier bridge 4, a contactor 6 and a buffer resistor 5 disposed on the rectifier bridge 4, and a fan body is disposed between the inverter module 2 and the rectifier bridge 3.

Referring to FIGS. 1 to 7, in some embodiments, the capacitor module 1 includes a fixed plate 13, a plurality of capacitor bodies 16 arranged in an array on the fixed plate 13, a positive capacitor copper busbar 11, a negative capacitor copper busbar 12 and a neutral capacitor copper busbar 17 connected to the capacitor bodies 16, and a first insulating spacer 18 and a second insulating spacer 19 covering the positive capacitor copper busbar 11 and the neutral capacitor copper busbar 17, respectively

The fixed plate 13 is also provided with a equalizing resistor 15, or

The fixed plate 13 is also provided with a capacitor radiator fan 9, and the capacitor radiator fan 9 is adjacently arranged on the radiator fan component 3.

Referring to fig. 1 to 7, in some embodiments, the capacitor module 1 further includes a capacitor negative support copper bar 21 and a capacitor positive support copper bar 22 disposed adjacently, and the capacitor negative support copper bar 21, the capacitor positive support copper bar 22 and the capacitor positive mother copper bar 11 are respectively located at two opposite sides of the capacitor body 16.

Referring to fig. 1-7, in some embodiments, the water-cooled frequency converter includes a 3-phase output base copper bar 23, a 3-phase output bridge copper bar 24, a U-phase output boost copper bar 25, a V-phase output boost copper bar 26, a W-phase output boost copper bar 27, a 3-phase input base copper bar 28, a rectifying positive copper bar 29, a rectifying negative copper bar 30, a T-phase input boost copper bar 31, an S-phase input boost copper bar 32, an R-phase input boost copper bar 33, a rectifying negative input contactor copper bar 34, an output contactor copper bar 35, a rectifying absorption capacitor 36, an inverting absorption capacitor 37, a 3-phase output base copper bar sheet metal support bridge 38, a third insulating spacer 40, and a rectifying positive boost copper bar 41.

Referring to fig. 1 to 7, in some embodiments, the water-cooled frequency converter further includes an R-phase input copper bar 42, an S-phase input copper bar 43, a T-phase input copper bar 44, a positive one copper bar 45, a positive two copper bars 46, a U-phase output copper bar 47, a V-phase output copper bar 48, a W-phase output copper bar 49, a current sensor 50, an input/output copper bar plastic holder 51, a W-phase current sensor mounting copper bar 52, a V-phase current sensor mounting copper bar 53, a U-phase current sensor mounting copper bar 54, a positive one and two shorting copper bars 56, an input/output copper bar mounting sheet metal 57, and an input/output wire conversion copper bar 58.

Referring to fig. 1 to 7, in some embodiments, the water-cooled frequency converter further includes an input/output module 59, an L-shaped negative copper bar 60, a straight negative copper bar 61, a fourth insulating spacer 62, an L-shaped positive copper bar 63, a straight positive copper bar 64, and a fifth insulating spacer 65.

Referring to fig. 1 to 7, in some embodiments, the accommodating cavity includes a first heat dissipation cavity 70 and a second heat dissipation cavity 71 communicated with the first heat dissipation cavity 70, the capacitor module 1 is disposed in the first heat dissipation cavity 70, the inverter module 2 and the cooling module to be water cooled are disposed in the second heat dissipation cavity 71, and the box 7 is provided with an air draft fan 66 to enable external cold air to enter the first heat dissipation cavity 70 and the second heat dissipation cavity 71, or

The water-cooled frequency converter further comprises a hanging ring 67 arranged on the box body 7, a PCB 68 arranged in the second heat dissipation cavity 71, a sheet metal shielding plate 69 and a wind shielding epoxy plate 72.

Referring to fig. 1 to 7, in some embodiments, the case 7 includes an upper cover 73 and a lower cover 74 disposed opposite to each other, and an upper hanging plate 76 and a lower hanging plate 77, and a case handle 75 and a ground terminal 78 are further disposed on the case 7.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The water-cooling frequency converter is characterized by comprising a box body, a capacitor module, a cooling fan assembly, a to-be-cooled module and a water-cooling radiator, wherein the box body is provided with a containing cavity, the capacitor module, the cooling fan assembly and the water-cooling radiator are sequentially arranged in the containing cavity from top to bottom along the height direction of the box body, and the to-be-cooled module is arranged on the water-cooling radiator so as to exchange heat with the water-cooling radiator.

2. The water-cooled inverter of claim 1, wherein the housing has a socket, and the cooling fan assembly comprises a bracket and a plurality of fan bodies standing on the bracket, wherein the bracket is inserted into the socket.

3. The water-cooled inverter of claim 2, wherein the cooling module comprises an inverter module, a rectifier bridge, a contactor and a buffer resistor, wherein the contactor and the buffer resistor are arranged on the rectifier bridge, and the fan main body is arranged between the inverter module and the rectifier bridge.

4. The water-cooled inverter of claim 1, wherein the capacitor module comprises a fixed plate, a plurality of capacitor bodies arranged on the fixed plate in an array, a capacitor positive copper busbar, a capacitor negative copper busbar and a capacitor neutral copper busbar connected to the capacitor bodies, and a first insulating spacer covered on the capacitor neutral copper busbar and a second insulating spacer covered on the capacitor positive copper busbar, or

The fixed plate is also provided with a equalizing resistor or

And the fixed plate is also provided with a capacitor cooling fan, and the capacitor cooling fan is adjacently arranged on the cooling fan component.

5. The water-cooled inverter of claim 4, wherein the capacitive module further comprises a capacitive negative support copper bar and a capacitive positive support copper bar that are disposed adjacent to each other, the capacitive negative support copper bar and the capacitive positive copper bar being disposed on opposite sides of the capacitive body, respectively.

6. The water-cooled frequency converter of any of claims 1 to 5, wherein the water-cooled frequency converter comprises a 3-phase output base copper bar, a 3-phase output bridge copper bar, a U-phase output boost copper bar, a V-phase output boost copper bar, a W-phase output boost copper bar, a 3-phase input base copper bar, a rectifying positive copper bar, a rectifying negative copper bar, a T-phase input boost copper bar, an S-phase input boost copper bar, an R-phase input boost copper bar, a rectifying negative feed contactor copper bar, a discharge contactor copper bar, a rectifying absorption capacitor, an inverting absorption capacitor, a 3-phase output base copper bar sheet metal support bridge, a third insulating spacer, and a rectifying positive boost copper bar.

7. The water-cooled frequency converter of claim 6, further comprising an R-phase input copper bar, an S-phase input copper bar, a T-phase input copper bar, a positive one copper bar, a positive two copper bars, a U-phase output copper bar, a V-phase output copper bar, a W-phase output copper bar, a current sensor, an input/output copper bar plastic fixing seat, a W-phase current sensor mounting copper bar, a V-phase current sensor mounting copper bar, a U-phase current sensor mounting copper bar, a positive one and a positive two short copper bars, an input/output copper bar mounting sheet metal, and an input/output wiring conversion copper bar.

8. The water-cooled frequency converter of claim 7, further comprising an input-output module, an L-shaped negative copper bar, a straight-shaped negative copper bar, a fourth insulating spacer, an L-shaped positive copper bar, a straight-shaped positive copper bar, and a fifth insulating spacer.

9. The water-cooled inverter of claim 3, wherein the housing cavity comprises a first heat dissipation cavity and a second heat dissipation cavity communicated with the first heat dissipation cavity, the capacitor module is arranged in the first heat dissipation cavity, the inverter module and the cooling module to be water-cooled are arranged in the second heat dissipation cavity, and an air draft fan is arranged on the box body to enable external cold air to enter the first heat dissipation cavity and the second heat dissipation cavity, or

The water-cooling frequency converter further comprises a hanging ring arranged on the box body, a PCB (printed circuit board) arranged in the second heat dissipation cavity, a metal plate shielding plate and a wind shielding epoxy plate.

10. The water-cooled inverter of any one of claims 1 to 8, wherein the housing comprises upper and lower covers disposed opposite each other, and upper and lower hanging plates, and wherein the housing is further provided with a housing handle and a ground terminal.