CN211530999U

CN211530999U - Frequency converter

Info

Publication number: CN211530999U
Application number: CN202020322130.8U
Authority: CN
Inventors: 郭超; 陈学云
Original assignee: Shenzhen Hewei Electrical Technology Co ltd
Current assignee: Shenzhen Hewei Electrical Technology Co ltd
Priority date: 2020-03-14
Filing date: 2020-03-14
Publication date: 2020-09-18
Anticipated expiration: 2030-03-14

Abstract

The utility model provides a frequency converter, including quick-witted case main part, the PCB drive plate is installed to quick-witted case main part's inboard, the PCB control panel is installed to the front end of PCB drive plate, just the insulating piece is installed to the front end of PCB drive plate, aluminium base board is installed to the front end of insulating piece, a plurality of IGBT transistors are installed at the top of aluminium base board, and are a plurality of the bottom of IGBT transistor all through vacuum reflow soldering with the top of aluminium base board is welded connection, just the bottom coating of aluminium base board has the silicone grease heat-conducting layer, the bottom of aluminium base board is equipped with the aluminium alloy radiator, aluminium base board with one side of aluminium alloy radiator is equipped with. The utility model discloses a vacuum reflow soldering is on aluminium base board IGBT transistor welding, coats the silicone grease heat-conducting layer on aluminium base board again, improves the heat conduction effect, then fixes aluminium base board on the aluminium alloy radiator again, has realized the installation of IGBT transistor, has improved the power of installation effectiveness and converter.

Description

Frequency converter

Technical Field

The utility model mainly relates to the technical field of converters, specifically be converters.

Background

The existing frequency converter is a low-power section frequency converter, because it is a low-power section frequency converter, the machine appearance is wholly less, lead to power density high, the temperature is high, the low-power section frequency converter power section coverage on the market is little, if the arrangement of electronic components on the circuit board is not reasonable enough, will produce serious mutual interference, thereby the reliability of greatly reduced frequency converter, reliability to the frequency converter, stability, consider in aspects such as power coverage and manufacturing cost, also very big improvement space, the frequency converter has the installation technology complicacy, the installation accuracy is high, thereby lead to the installation effectiveness lower. Therefore, it is necessary to develop a frequency converter to improve the installation efficiency of the frequency converter.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a frequency converter for solve the technical problem who proposes in the above-mentioned background art.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the frequency converter comprises a case body, a PCB (printed Circuit Board) drive board is vertically installed on the inner side of the case body, a PCB control board is installed at the front end of the PCB drive board, an insulating sheet is installed at the front end of the PCB drive board close to the outer edge, an aluminum substrate is installed at the front end of the insulating sheet, a plurality of IGBT (insulated gate bipolar transistor) transistors are installed at the top of the aluminum substrate in a staggered mode, a plurality of IGBT transistors are installed at the bottom of the IGBT transistors, the bottom of the IGBT transistors is welded with the top of the aluminum substrate in a welded mode, a silicone grease heat conduction layer is coated at the bottom of the aluminum substrate, an aluminum profile radiator is installed at the bottom of the aluminum substrate, the aluminum profile radiator is fixedly connected.

Furthermore, a PCB terminal board is fixedly welded on one side of the PCB driving board.

Furthermore, a connecting pin header is arranged on one side of the PCB drive board and one side of the PCB control board.

Further, the top of machine case main part is recessed column structure, machine case main part includes casing and plastic lower housing on the plastic, the top of casing is crisscross under the plastic is equipped with a plurality of heat dissipation vents, and is a plurality of the heat dissipation vent all runs through perpendicularly under the plastic casing, just the front end of casing is equipped with the data plate subsides and puts the groove under the plastic.

Further, the top of casing is close to outer edgewise and installs external twin-wire net mouth on the plastic, just the front end of casing is equipped with the installation and observes the hole on the plastic, the top of installation observation hole is equipped with software and burns the mouth.

Furthermore, an operation display panel is arranged on one side of the plastic upper shell adjacent to the external double-net-port, a potentiometer knob cap is arranged on one side of the operation display panel, a dial-up control switch is arranged below the operation display panel, and an output signal terminal is arranged below the dial-up control switch.

Furthermore, plastic insulating sleeves are sleeved at the pins of the plurality of IGBT transistors.

Furthermore, one side of the operation display panel is bonded and connected with an operation panel adhesive film.

Compared with the prior art, the beneficial effects of the utility model are that:

one of the two, the utility model provides high frequency converter's installation effectiveness, adopt vacuum reflow soldering to weld the IGBT transistor on aluminium base board, evenly coat the silicone grease again on aluminium base board and form the silicone grease heat-conducting layer, then fix aluminium base board on the aluminium alloy radiator again, the installation of IGBT transistor has been realized promptly, installation effectiveness is improved, improve the heat conduction effect between aluminium base board and the aluminium alloy radiator through the silicone grease heat-conducting layer, dispel the heat through radiator fan, give off the heat that produces to the frequency converter outside, later with the PCB drive plate, the PCB control panel, aluminium base board, insulating piece and radiator fan rationally install in the quick-witted case main part, the power of this kind of frequency converter has been improved;

and secondly, the utility model discloses save installation space, it is pleasing to the eye to make quick-witted case become to lengthen, because the PCB drive plate sets up the inboard at the quick-witted case main part perpendicularly, through the direct welding of PCB terminal block with the PCB drive plate, make full use of the inner space resource of quick-witted case main part, it is pleasing to the eye to make quick-witted case main part become to lengthen, machine case main part top designs into recessed form simultaneously, make the converter wholly become shorter, installation space has been saved, through the heat dissipation vent that sets up on casing under casing and the plastic on the casing, external two net gapes and software burn record mouthful etc., make full use of the outer space resource of quick-witted case main part, installation.

The present invention will be explained in detail with reference to the drawings and specific embodiments.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a bottom view of the main body structure of the case of the present invention;

FIG. 3 is a sectional view of the main body structure of the case of the present invention;

fig. 4 is a sectional view of the IGBT transistor mounting structure of the present invention.

In the figure: 1. a chassis main body; 2. a plastic upper shell; 21. an operation display panel; 211. pasting a film on an operation panel; 22. a potentiometer knob cap; 23. a dial control switch; 24. an output signal terminal; 25. installing an observation hole; 26. the external connection is a double-network port; 27. a software burning port; 3. a plastic lower shell; 31. a nameplate sticking groove; 32. a heat dissipation vent; 4. a PCB control board; 41. connecting the pin header seat; 5. a PCB drive board; 51. a PCB terminal board; 6. an insulating sheet; 7. an aluminum substrate; 71. a silicone grease heat conducting layer; 8. an aluminum profile radiator; 9. an IGBT transistor; 91. a plastic insulating sleeve; 10. a heat dissipation fan.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1-4 heavily, the frequency converter includes a case body 1, a PCB driving board 5 is vertically installed on the inner side of the case body 1, a PCB control board 4 is installed on the front end of the PCB driving board 5, an insulating sheet 6 is installed on the front end of the PCB driving board 5 near the outer edge, an aluminum substrate 7 is installed on the front end of the insulating sheet 6, a plurality of IGBT transistors 9 are installed on the top of the aluminum substrate 7 in a staggered manner, the bottoms of the IGBT transistors 9 are all welded to the top of the aluminum substrate 7 by vacuum reflow soldering, a silicone grease heat conduction layer 71 is coated on the bottom of the aluminum substrate 7, an aluminum profile heat sink 8 is installed on the bottom of the aluminum substrate 7, the aluminum profile heat sink 8 is fixedly connected to the inner side wall of the case body 1, and a heat dissipation fan 10 is vertically installed on one side of the aluminum, and plastic insulating sleeves 91 are sleeved at the pins of the plurality of IGBT transistors 9. In this embodiment, the possibility of short circuit of the IGBT transistor 9 is reduced by the plastic insulating sleeve 91.

Please refer to fig. 1 and fig. 3, a PCB terminal board 51 is welded and fixed on one side of the PCB driving board 5, a connecting pin header 41 is installed on one side of the PCB driving board 5 and one side of the PCB control board 4, the top of the chassis body 1 is a concave structure, the chassis body 1 includes a plastic upper housing 2 and a plastic lower housing 3, a plurality of heat dissipation vents 32 are staggered on the top of the plastic lower housing 3, the plurality of heat dissipation vents 32 vertically penetrate the plastic lower housing 3, a nameplate attaching slot 31 is arranged at the front end of the plastic lower housing 3, an external dual-net port 26 is installed near the outer edge at the top of the plastic upper housing 2, an installation observation hole 25 is arranged at the front end of the plastic upper housing 2, a software burning port 27 is arranged above the installation observation hole 25, an operation display panel 21 is arranged on one side of the plastic upper housing 2 adjacent to the external dual-net port 26, a potentiometer knob cap 22 is arranged on one side of the operation display panel 21, a dial control switch 23 is arranged below the operation display panel 21, an output signal terminal 24 is arranged below the dial control switch 23, and an operation panel film 211 is connected to one side of the operation display panel 21 in an adhesion mode. In the embodiment, since the PCB driving board 5 is vertically disposed at the inner side of the chassis main body 1, the internal space resources of the chassis main body 1 are fully utilized by directly welding the PCB terminal board 51 and the PCB driving board 5, so that the chassis main body 1 becomes long and beautiful, meanwhile, the top of the case body 1 is designed to be concave, so that the frequency converter is integrally shorter, the installation space is saved, through the heat dissipation vent 32 and the nameplate pasting groove 31 arranged on the plastic upper shell 2, the external double-net port 26, the installation observation hole 25, the software burning port 27, the operation display panel 21, the potentiometer knob cap 22, the dial-up control switch 23 and the output signal terminal 24 arranged on the plastic lower shell 3, the external space resources of the case main body 1 are fully utilized, the installation space is saved, the heat generated by the main case body 1 is dissipated through the heat dissipation vent 32, and the dust-proof and scratch-proof operation of the operation display panel 21 is realized through the operation panel film 211.

The utility model discloses a concrete operation as follows:

firstly, the IGBT transistor 9 is welded on the aluminum substrate 7 by adopting vacuum reflow soldering, then the aluminum substrate 7 is evenly coated with silicone grease to form a silicone grease heat conduction layer 71, then the aluminum substrate 7 is fixed on the aluminum profile radiator 8, thus realizing the installation of the IGBT transistor 9, improving the installation efficiency, improving the heat conduction effect between the aluminum substrate 7 and the aluminum profile radiator 8 by the silicone grease heat conduction layer 71, dissipating heat by the heat dissipation fan 10, leading the heat to be dissipated to the outside of the frequency converter by the heat dissipation vent 32, then reasonably installing the PCB driving plate 5, the PCB control plate 4, the aluminum substrate 7, the insulation sheet 6 and the heat dissipation fan 10 in the case main body 1, improving the power of the frequency converter, because the PCB driving plate 5 is vertically arranged at the inner side of the case main body 1, and fully utilizing the internal space resources of the case main body 1 by the direct welding of the PCB terminal plate 51 and the PCB driving, make machine case main part 1 become to lengthen pleasing to the eye, machine case main part 1 top designs into recessed form simultaneously, make the converter wholly become shorter, the installation space has been saved, heat dissipation vent 32 and data plate subsides groove 31 that set up on casing 2 on the plastic, the external double-net gape 26 that sets up on the casing 3 under the plastic, installation observation hole 25, software burns record mouthful 27, operation display panel 21, potentiometre knob cap 22, dial-up control switch 23 and output signal terminal 24, make full use of machine case main part 1's external space resource, the installation space has been saved.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, if the method and the technical solution of the present invention are adopted, the present invention can be directly applied to other occasions without substantial improvement, and the present invention is within the protection scope of the present invention.

Claims

1. The frequency converter comprises a case main body (1) and is characterized in that a PCB (printed Circuit Board) driving board (5) is vertically installed on the inner side of the case main body (1), a PCB control board (4) is installed at the front end of the PCB driving board (5), an insulating sheet (6) is installed at the front end, close to the outer edge, of the PCB driving board (5), an aluminum substrate (7) is installed at the front end of the insulating sheet (6), a plurality of IGBT transistors (9) are installed on the top of the aluminum substrate (7) in a staggered mode, the bottoms of the plurality of IGBT transistors (9) are all in welded connection with the top of the aluminum substrate (7) through vacuum reflow soldering, a silicon grease heat conduction layer (71) is coated on the bottom of the aluminum substrate (7), an aluminum profile radiator (8) is installed at the bottom of the aluminum substrate (7), and the aluminum profile radiator (8) is, and a heat radiation fan (10) is vertically arranged on one side of the aluminum substrate (7) and one side of the aluminum profile radiator (8).

2. The frequency converter according to claim 1, wherein a PCB terminal board (51) is fixed to one side of the PCB driving board (5) by welding.

3. Frequency converter according to claim 1, characterized in that one side of both the PCB driver board (5) and the PCB control board (4) is fitted with a connection pin header (41).

4. The frequency converter according to claim 1, wherein the top of the case body (1) is a concave structure, the case body (1) comprises an upper plastic shell (2) and a lower plastic shell (3), a plurality of heat dissipation vents (32) are alternately arranged on the top of the lower plastic shell (3), the heat dissipation vents (32) vertically penetrate through the lower plastic shell (3), and a nameplate attaching groove (31) is arranged at the front end of the lower plastic shell (3).

5. The frequency converter according to claim 4, wherein an external double-net port (26) is installed at the top of the plastic upper shell (2) near the outer edge, an installation observation hole (25) is formed in the front end of the plastic upper shell (2), and a software burning port (27) is formed above the installation observation hole (25).

6. The frequency converter according to claim 5, wherein an operation display panel (21) is arranged on one side of the plastic upper shell (2) adjacent to the external double-net port (26), a potentiometer knob cap (22) is arranged on one side of the operation display panel (21), a dial-up control switch (23) is arranged below the operation display panel (21), and an output signal terminal (24) is arranged below the dial-up control switch (23).

7. The frequency converter according to claim 1, wherein a plurality of pins of the IGBT transistors (9) are sleeved with plastic insulating sleeves (91).

8. The frequency converter according to claim 6, characterized in that an operation panel film (211) is adhesively attached to one side of the operation display panel (21).