CN110299851A - Installation frame, converter main control unit, converter and compressor - Google Patents

Abstract

The invention provides an installation frame, a frequency converter main control unit, a frequency converter and a compressor. Wherein the installation frame of the main control unit of the frequency converter includes a main frame, and the first installation part, the second installation part and the third installation part parallel to each other are constructed on the main frame, and the second installation part is located in the first installation part. Between the installation part and the second installation part, the first installation part is used to install the first motherboard, the second installation part is used to install the IPM power module assembly, and the third installation part is used to install the second As for the main board, the first installation part is arranged vertically, so that the component installation sides of the first main board and the second main board can face the user side horizontally after installation. According to the installation frame, the main control unit of the frequency converter, the frequency converter and the compressor of the present invention, the structural layout is reasonable and compact, the volume of the main control unit is effectively reduced, and it is convenient for later maintenance.

Description

Installation frame, frequency converter main control unit, frequency converter and compressor

technical field

The invention belongs to the technical field of frequency converters, and in particular relates to an installation frame, a main control unit of frequency converters, a frequency converter and a compressor.

Background technique

With the continuous progress and development of electronic technology, the development of frequency converter technology and its equipment is also gradually improving. Four-quadrant high-power frequency converters have been widely used, such as: heavy industry, water supply construction system, air conditioning equipment, elevator operation, etc. . However, the research and development of domestic inverters has not yet formed a complete system, and the structural design of the inverters is not yet mature, resulting in the current high-power inverters with large volume, difficult maintenance and regular inspection, and high failure rate. The structural design of the unit accounts for a large part of the reason.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to provide an installation frame, a frequency converter main control unit, a frequency converter and a compressor, which have a reasonable and compact structure layout, effectively reduce the volume of the main control unit, and facilitate later maintenance.

In order to solve the above problems, the present invention provides a mounting frame used in the main control unit of the frequency converter, including a main frame, and a first mounting part, a second mounting part, and a third mounting part parallel to each other are constructed on the main frame , and the second installation part is between the first installation part and the second installation part, the first installation part is used to install the first motherboard, and the second installation part is used to install the IPM power module Assemblies, the third installation part is used to install the second main board, and the first installation part is vertically arranged so that the component installation sides of the first main board and the second main board can face the user side horizontally after installation.

Preferably, the main frame includes a bottom frame and a top frame arranged in parallel horizontally, and the bottom frame and the top frame are connected by a plurality of vertical beams arranged in parallel at intervals, and the plurality of vertical beams include a first vertical beam, The second vertical beam, the gap between the first vertical beam and the second vertical beam is provided with a first main board mounting plate; and/or, a plurality of vertical beams also include a third vertical beam, and the third vertical beam An IPM power module component mounting plate is arranged on it.

Preferably, the plurality of vertical beams further include a fourth vertical beam and a fifth vertical beam, and a second main board mounting plate assembly is provided at a gap between the fourth vertical beam and the fifth vertical beam.

Preferably, the second main board installation plate assembly includes a fixed backboard and a movable backboard, the fixed backboard is fixedly connected between the fourth vertical beam and the fifth vertical beam, and the movable backboard It is used for connecting with the second main board, and the fixed backboard is slidably connected with the movable backboard.

Preferably, a guide rail is provided between the fixed backboard and the movable backboard.

Preferably, positioning through holes are configured on the movable back plate, and fixing threaded holes corresponding to the positioning through holes are configured on the fixed back plate, when the movable back plate is in a preset retracted position , the positioning through hole is connected with the fixing threaded hole through a screw.

Preferably, position holding screw holes are configured on the movable back plate.

Preferably, the plurality of vertical beams further include a sixth vertical beam and a seventh vertical beam, and the sixth vertical beam and the seventh vertical beam together with the first vertical beam and the fourth vertical beam form a capacitor installation part , the capacitor installation part is used for installing capacitors.

Preferably, a capacitor mounting plate is provided on the area of the bottom frame corresponding to the capacitor mounting portion, and the capacitor is detachably connected to the capacitor mounting plate.

Preferably, a water receiving tray is further provided on the bottom frame, and the water receiving tray is located at the lower part of the second installation part.

Preferably, the top frame is further provided with a power module installation plate.

The present invention also provides a main control unit of a frequency converter, including an installation frame, and the installation frame is the above-mentioned installation frame of the main control unit of the frequency converter.

Preferably, the IPM power module assembly includes a rectifier module, an inverter module, and a heat dissipation component, and the rectifier module and the inverter module are respectively located on opposite sides of the heat dissipation component to form heat exchange with the heat dissipation component.

Preferably, the heat dissipation component is a plate structure, and the heat dissipation component is detachably connected to the second mounting portion.

Preferably, thermal insulation cotton is provided on the exposed surface of the heat dissipation component; and/or, the temperature of the heat dissipation component is adjusted through refrigerant circulation.

Preferably, the rectifier module is electrically connected to the inverter module through a busbar, and when the inverter main control unit installation frame includes a capacitor installation part, the capacitor is electrically connected to the busbar.

The present invention also provides a frequency converter, including the above-mentioned frequency converter main control unit.

The present invention also provides a compressor, including the above frequency converter.

The present invention provides an installation frame, an inverter main control unit, an inverter, and a compressor. The first installation part, the second installation part, and the third installation part are all in vertical positions and parallel to each other, so that the The first main board, the second main board and the IPM power module assembly can be vertically arranged on the main frame parallel to each other, and the IPM power module assembly is located between the first main board and the second main board , which enables the three to form a stacked structure in the direction of horizontal extension in assembly. While the structure is compact, it prevents the phenomenon that the first main board, the second main board and the IPM power module components are placed horizontally and are easy to deposit dust in the prior art. In addition, since the first main board, the second main board and the IPM power module assembly can be installed vertically, this can ensure that the electrical components on the first main board, the second main board and the IPM power module assembly can be oriented horizontally On the user side, it is not only easy to install, but also facilitates the later maintenance of the main control unit.

Description of drawings

Fig. 1 is a schematic perspective view of the installation frame of the main control unit of the frequency converter according to the embodiment of the present invention;

Fig. 2 is the three-dimensional structure schematic diagram of Fig. 1;

FIG. 3 is a schematic diagram of a three-dimensional structure of a main control unit of a frequency converter according to an embodiment of the present invention.

The reference signs are indicated as:

11. The first vertical beam; 12. The second vertical beam; 13. The third vertical beam; 14. The fourth vertical beam; 15. The fifth vertical beam; 16. The sixth vertical beam; 17. The seventh vertical beam; 2 , water tray; 3, power module mounting plate; 4, top frame; 41, first beam; 42, second beam; 43, third beam; 44, fourth beam; 5, bottom frame; 51, fifth Beam; 52, sixth beam; 53, seventh beam; 54, eighth beam; 100, first main board; 101, first main board mounting plate; 200, IPM power module assembly; 201, IPM power module assembly mounting plate; 202, rectifier module; 203, inverter module; 204, heat dissipation component; 205, bus bar; 300, second main board; 301, second main board mounting plate assembly; 3011, fixed backplane; Guide rail; 3014, positioning through hole; 3015, position maintaining screw hole; 400, capacitor; 401, capacitor mounting plate; 500, power module.

Detailed ways

Referring to Fig. 1 to Fig. 3, according to an embodiment of the present invention, an installation frame is provided, including a main frame, which is used in the main control unit of the frequency converter, and is specifically applied as the installation frame of the main control unit of the frequency converter. The main frame is configured with a first installation part, a second installation part and a third installation part parallel to each other, and the second installation part is between the first installation part and the second installation part, so The first installation part is used to install the first motherboard 100, the second installation part is used to install the IPM power module assembly 200, the third installation part is used to install the second motherboard 300, and the first installation part is vertically It is set so that the component installation sides of the first main board 100 and the second main board 300 can face the user side horizontally after installation. In this technical solution, the first installation part, the second installation part, and the third installation part are all in vertical positions and parallel to each other, so that the first main board 100, the second main board 300 and the IPM power module assembly 200 can They are vertically arranged on the main frame parallel to each other, and the IPM power module assembly 200 is located between the first main board 100 and the second main board 300, which makes the three form a The stacked structure in the horizontal extension direction has a compact structure, and at the same time, it prevents the phenomenon that the first main board 100, the second main board 300 and the IPM power module assembly 200 in the prior art are placed horizontally and easy to deposit dust. In addition, due to the The first main board 100, the second main board 300 and the IPM power module assembly 200 can be installed vertically, which can ensure that the electrical components on the first main board 100, the second main board 300 and the IPM power module assembly 200 can face the user horizontally side, which is convenient for installation and also facilitates the later maintenance of the main control unit.

When the main frame is specifically manufactured, for example, it can be formed by splicing and welding a plurality of angle steels of different specifications. Specifically, the main frame includes a bottom frame 5 and a top frame 4 arranged in parallel horizontally, and the bottom frame 5 and the top frame Frames 4 are connected by a plurality of vertical beams arranged at intervals in parallel, a plurality of vertical beams comprising a first vertical beam 11 and a second vertical beam 12, the gap positions of the first vertical beam 11 and the second vertical beam 12 A first motherboard mounting plate 101 is provided; and/or, a plurality of vertical beams also include a third vertical beam 13 and a fourth vertical beam 14, and the gap positions of the third vertical beam 13 and the fourth vertical beam 14 are set There is an IPM power module assembly mounting plate 201 . Specifically, the top frame 4 can be formed by, for example, a first crossbeam 41, a second crossbeam 42, a third crossbeam 43, and a fourth crossbeam 44 connected end to end, while the bottom frame 5 can be formed by a first crossbeam connected end to end. Five beams 51, sixth beams 52, seventh beams 53, and eighth beams 54 are formed.

Furthermore, the plurality of vertical beams further include a fourth vertical beam 14 and a fifth vertical beam 15 , and a second motherboard mounting plate assembly 301 is provided at a gap between the fourth vertical beam 14 and the fifth vertical beam 15 .

As a preferred embodiment, the second motherboard mounting plate assembly 301 includes a fixed backboard 3011 and a movable backboard 3012, and the fixed backboard 3011 is fixedly connected to the fourth vertical beam 14 and the fifth vertical beam 14. Between the vertical beams 15, the movable backboard 3012 is used to connect with the second main board 300, and the fixed backboard 3011 is slidingly connected to the movable backboard 3012, that is, when the second main board 300 When assembled on the second mainboard mounting plate assembly 301, when the second mainboard 300 needs to be overhauled, due to the sliding connection between the movable backplane 3012 and the fixed backplane 3011, the Forced on the movable back plate 3012 and pulled outward, the second main board 300 will be completely exposed in front of the operator. In this way, although there is a gap between the first mounting part, the second mounting part and the third mounting part Blocking in the horizontal direction, but due to the design of this technical solution, the adverse effects caused by horizontal blocking can be eliminated, which greatly facilitates the later maintenance process of the main control unit. As a specific implementation manner, the aforementioned sliding connection can be realized by providing a guide rail 3013 between the fixed backboard 3011 and the movable backboard 3012 .

Due to the sliding connection between the fixed backplane 3011 and the movable backplane 3012, when the placement orientation of the installation frame is tilted, for example, when the main control unit of the inverter is set on the vehicle, the fixed The sliding connection between the backboard 3011 and the movable backboard 3012 will cause the position of the movable backboard 3012 to be unstable. In order to improve the reliable stability of its position, preferably, the movable backboard 3012 is configured with positioning Through hole 3014, the fixed back plate 3011 is configured with a fixed threaded hole corresponding to the positioning through hole 3014, when the movable back plate 3012 is in the preset retracted position, the positioning through hole 3014 and The fixed threaded holes are connected by threaded parts. In the specific operation, the commonly used positioning bolts can be used for the threaded parts. Further, the movable backplane 3012 is configured with a position holding screw hole 3015, and in a specific application, a conflicting bolt is screwed in the position keeping screw hole 3015, and the collision bolt is directed toward the fixed backplane 3011. One side is screwed in so that the top end of the shaft of the collision bolt collides with the fixed backplane 3011, so that the distance between the movable backplane 3012 and the fixed backplane 3011 is maintained by the collision bolt, It can be understood that, the interference bolts and the positioning bolts jointly form a holding position for the relative position of the movable backboard 3012 and the fixed backboard 3011 .

The volume of the capacitor in the main control unit is often relatively large. For this situation, preferably, the plurality of vertical beams further include a sixth vertical beam 16 and a seventh vertical beam 17, and the sixth vertical beam 16 and the seventh vertical beam The vertical beam 17, the first vertical beam 11 and the fourth vertical beam 14 jointly form a capacitor installation part, and the capacitor installation part is used to install the capacitor 400. At this time, the capacitor 400 and the busbar in the IPM power module assembly 200 205 is electrically connected. In order to improve the reliability of the position of the capacitor 400, a capacitor mounting plate 401 is arranged on the area corresponding to the capacitor mounting part of the bottom frame 5, and the capacitor 400 is detachably connected to the capacitor mounting plate 401. Specifically, the side of the capacitor 400 facing the capacitor mounting plate 401 is provided with a threaded column, and the threaded column can be screwed to the capacitor mounting plate 401 .

When the IPM power module assembly 200 is provided with heat dissipation components, condensed water is easily generated on the heat dissipation components. At this time, preferably, the bottom frame 5 is also provided with a water receiving tray 2, and the water receiving tray 2 is located at the lower part of the second installation part, so as to receive and discharge the condensed water generated by the IPM power module assembly 200 in a timely manner, so as to prevent hidden dangers to electrical components.

Preferably, the top frame 4 is also provided with a power module installation plate 3, specifically, the power module installation plate 3 has a concave structure, and the concave structure forms the installation space of the power module 500, adopting this structure , the power module 500 is isolated from the first motherboard 100, the second motherboard 300 and the IPM power module assembly 200, and can form electromagnetic protection for it. It can be understood that the power module 500 is used to protect the first Power supply for the main board 100 and the second main board 200 .

Furthermore, the outer periphery of the installation frame can be provided with a corresponding cover to form a seal for the internal components of the installation frame. In practical applications, the installation frame is often placed in an electrical cabinet. At this time, there is no need to The outside of the installation frame is completely sealed, and it is only necessary to set up a corresponding cover plate at a position that affects the appearance or is more likely to be accidentally touched. For example, a front cover plate is set on the corresponding side of the first main board 100 to lift The appearance of the installation frame is aesthetically pleasing, and a top cover plate is provided on the corresponding side of the power module 500 to prevent the operator from accidentally touching the power module 500 to get an electric shock.

Using the installation frame of the present invention, in a specific application example, its overall size can be controlled below 620mm×350mm×440mm.

According to an embodiment of the present invention, there is also provided a frequency converter main control unit, including an installation frame, and the installation frame is the above-mentioned installation frame of the frequency converter main control unit. Further, the IPM power module assembly 200 includes a rectifier module 202, an inverter module 203, and a heat dissipation component 204, and the rectifier module 202 and the inverter module 203 are respectively located on opposite sides of the heat dissipation component 204, so as to be compatible with the The heat dissipation component 204 forms heat exchange, that is, the rectifier module 202 and the inverter module 203 jointly perform heat exchange with the heat dissipation component 204, which can further make the structure of the installation frame more compact, and the occupied volume of the main control unit will be further reduced. reduce. Preferably, the heat dissipation component 204 is a plate-shaped structure, and the heat dissipation component 204 is detachably connected to the second installation part. It can be understood that at this time, the heat dissipation component 204 becomes a installation carrier, and the rectifier module 202 and inverter module 203 are directly installed on the heat dissipation component 204, the plate-shaped heat dissipation component 204 can be specifically a heat dissipation plate, the heat dissipation plate has a shell and passes through the shell The internal pipeline has a cold medium in the pipeline to achieve temperature regulation (that is, cooling). Further, in order to avoid the formation of condensed water on the heat dissipation component 204 to the greatest extent, preferably, the exposed surface of the heat dissipation component 204 is provided with thermal insulation cotton, and the purpose of setting the thermal insulation cotton is to isolate the heat dissipation component 204 from the outside Contact with air to prevent moisture in the air from condensing into condensed water.

Preferably, the rectifier module 202 and the inverter module 203 are also electrically connected through the busbar 205, and when the installation frame of the inverter main control unit includes a capacitor installation part, the capacitor 400 is electrically connected to the busbar 205. For connection, the busbar 205 may, for example, be a laminated busbar, which can further improve the structural compactness of the installation frame.

According to an embodiment of the present invention, a frequency converter is further provided, including the above-mentioned frequency converter main control unit.

According to an embodiment of the present invention, there is also provided a compressor, including the above frequency converter

Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned advantageous modes can be freely combined and superimposed.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Inside. The above are only preferred embodiments of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (18)

1. a kind of installation frame, in frequency converter main control unit, which is characterized in that including main frame, structure on the main frame The first mounting portion parallel to each other, the second mounting portion, third mounting portion are made, and second mounting portion is in first peace Between dress portion and second mounting portion, first mounting portion for installing the first mainboard (100), use by second mounting portion In installation IPM power module assembly (200), the third mounting portion is for installing the second mainboard (300), first mounting portion It is vertically arranged, so that the component seating side of first mainboard (100) and the second mainboard (300) after mounting can be horizontal Towards user side.

2. installation frame according to claim 1, which is characterized in that the main frame includes the bottom frame of horizontal parallel setting (5) it with top frame (4), is connect between the bottom frame (5) and top frame (4) by the vertical beam that more parallel intervals are arranged, described in more Vertical beam includes the first vertical beam (11), the second vertical beam (12), the interstitial site setting of first vertical beam (11), the second vertical beam (12) There is the first mainboard mounting plate (101)；And/or multiple vertical beams further include third vertical beam (13), on the third vertical beam (13) It is provided with IPM power module assembly mounting plate (201).

3. installation frame according to claim 2, which is characterized in that the multiple vertical beam further include the 4th vertical beam (14), 5th vertical beam (15), the 4th vertical beam (14), the 5th vertical beam (15) interstitial site be provided with the second mainboard mounting plate component (301)。

4. installation frame according to claim 3, which is characterized in that the second mainboard mounting plate component (301) includes Stationary backplate (3011), movable back board (3012), the stationary backplate (3011) and are fixedly connected on the 4th vertical beam (14) Between the 5th vertical beam (15), the movable back board (3012) with second mainboard (300) for connecting, the fixation It is slidably connected between backboard (3011) and the movable back board (3012).

5. installation frame according to claim 4, which is characterized in that the stationary backplate (3011) and the movable back board (3012) guide rail (3013) are provided between.

6. installation frame according to claim 4, which is characterized in that it is logical to be configured with positioning on the movable back board (3012) Hole (3014) is configured with fixing screwed hole corresponding with the positioning through hole (3014) on the stationary backplate (3011), when When the movable back board (3012) is in preset retracted position, between the positioning through hole (3014) and the fixing screwed hole It is connected by screw element.

7. installation frame according to claim 4, which is characterized in that be configured with position guarantor on the movable back board (3012) Hold screw hole (3015).

8. installation frame according to claim 4, which is characterized in that the multiple vertical beam further include the 6th vertical beam (16), 7th vertical beam (17), the 6th vertical beam (16), the 7th vertical beam (17) and first vertical beam (11), the 4th vertical beam (14) are common Capacitor mounting portion is surrounded, the capacitor mounting portion is for installing capacitor (400).

9. installation frame according to claim 8, which is characterized in that the bottom frame (5) is opposite with the capacitor mounting portion It is provided on the region answered capacitor mounting plate (401), it is detachable between the capacitor (400) and the capacitor mounting plate (401) Connection.

10. installation frame according to claim 2, which is characterized in that be additionally provided with drip tray (2), institute on the bottom frame (5) State the lower position that drip tray (2) are in second mounting portion.

11. installation frame according to claim 2, which is characterized in that be additionally provided with power module installation on the top frame (4) Plate (3).

12. a kind of frequency converter main control unit, including installation frame, which is characterized in that the installation frame is claim 1 to 11 Any one of described in frequency converter main control unit installation frame.

13. main control unit according to claim 12, which is characterized in that the IPM power module assembly (200) includes whole Flow module (202), inverter module (203), thermal component (204), the rectification module (202), inverter module (203) are located respectively Opposite sides in the thermal component (204), to form heat exchange with the thermal component (204).

14. main control unit according to claim 13, which is characterized in that the thermal component (204) is plate structure, institute Thermal component (204) is stated to be removably attachable in second mounting portion.

15. main control unit according to claim 13, which is characterized in that the exposed surface of the thermal component (204) is set There is heat-preservation cotton；And/or the thermal component (204) realizes that temperature is adjusted by refrigerant circulation.

16. main control unit according to claim 13, which is characterized in that the rectification module (202) and the inversion mould It is also electrically connected by busbar (205) between block (203), when the frequency converter main control unit installation frame includes capacitor mounting portion When, capacitor (400) is electrically connected with the busbar (205).

17. a kind of frequency converter, including frequency converter main control unit, which is characterized in that the frequency converter main control unit is claim Frequency converter main control unit described in any one of 12-16.

18. a kind of compressor, including frequency converter, which is characterized in that the frequency converter is frequency converter described in claim 17.