CN217508569U

CN217508569U - Base of frequency converter and frequency converter

Info

Publication number: CN217508569U
Application number: CN202221202578.1U
Authority: CN
Inventors: 荀东升; 吴晓唯
Original assignee: Tianjin Puchuan Control Equipment Co ltd
Current assignee: Tianjin Puchuan Control Equipment Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-27
Anticipated expiration: 2032-05-19

Abstract

The utility model relates to a converter technical field specifically is a base and converter of converter, this converter base includes the bottom plate, be located the roof of bottom plate top, the lateral plate and the cover at connection bottom plate and roof both ends are located the outside cover shell of roof and lateral plate, the bottom plate, the roof, enclose synthetic closed shell structure between curb plate and the cover shell, still include two heat conduction baffles, two heat conduction baffle parallel arrangement separate into two independent installation cavitys between the board of both sides and with the shell structure inner chamber, leave ventilation gap between two heat conduction baffles, seted up on the board of both sides respectively with the communicating louvre of ventilation gap and inlet port. The utility model discloses utilize two heat conduction baffle to separate into two independent installation cavitys with shell structure's base inner chamber to leave ventilation gap between two heat conduction baffle, can guarantee that the base has good radiating while, avoid external dust or steam to enter into in the installation cavity of base.

Description

Base of frequency converter and frequency converter

Technical Field

The utility model relates to a converter technical field specifically is a base and converter of converter.

Background

The frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor, and mainly comprises a rectification unit (alternating current to direct current), a filtering unit, an inversion unit (direct current to alternating current), a braking unit, a driving unit, a detection unit and a microprocessing unit. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off the internal IGBT, and provides the required power supply voltage according to the actual requirement of the motor, thereby achieving the purposes of energy conservation and speed regulation.

The existing patent with publication number CN207732620U provides a base and a frequency converter of a frequency converter, the base and the frequency converter of the frequency converter isolate two cavities by arranging a vertical plate on the base, one of the cavities is used as an independent air duct and is used for installing components with large heat productivity, the other component with small heat productivity is used for installing the components with small heat productivity, under the isolation action of the vertical plate, the heat dissipation is sufficient, the reliability of the product is improved, however, the base of the frequency converter and the independent air duct in the frequency converter are directly communicated with the outside, in the using process, dust or humid air in the external environment is easily brought into the base, and therefore short circuit or other adverse effects are caused to electronic components in the base.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a base and converter of converter can avoid external dust or steam to enter into the installation cavity when having good radiating, has solved the problem that electronic components in the current converter base is easily infected with dust or steam.

In order to realize the above object, according to an aspect of the utility model, a base of converter is provided, include the bottom plate, be located roof, the connection of bottom plate top the bottom plate with curb plate and the cover at roof both ends are located the roof with the outside cover shell of curb plate, the bottom plate the roof the curb plate with enclose synthetic closed shell structure between the cover shell, still include two heat conduction baffle, two heat conduction baffle parallel arrangement is in two between the curb plate and will two independent installation cavity, two are separated into to the shell structure inner chamber leave the ventilation clearance between the heat conduction baffle, two seted up respectively on the curb plate with the communicating louvre in ventilation clearance and inlet port.

Optionally, a hollow fan fixing frame communicated with the heat dissipation holes is fixed on the outer side of the side plate provided with the heat dissipation holes, and the fan fixing frame is provided with mounting holes for mounting the heat dissipation fans.

Optionally, a first avoidance groove is processed on the side wall of the casing corresponding to the fan fixing frame, and a second avoidance groove is processed on the side wall of the casing corresponding to the air inlet hole.

Optionally, the inner side of the shell structure is provided with a limiting frame in a protruding manner, and the heat-conducting partition plate is fixedly bonded with the limiting frame through sealant.

Optionally, the heat-conducting partition plates are made of aluminum alloy, and wave-shaped heat-radiating protrusions are formed on opposite sides of the two heat-conducting partition plates in a protruding mode.

According to another aspect of the utility model, a converter is provided, the base including bottom open-ended cavity top cap and above-mentioned converter, open at the roof top have with the communicating line hole of crossing of top cap, the top cap with all fix through the fixed screw between the bottom plate both ends.

Optionally, a first positioning column is arranged at the bottom of the housing, a first positioning hole corresponding to the first positioning column is formed in the top of the bottom plate, a second positioning column is arranged at the bottom of the top cover, and a second positioning hole corresponding to the second positioning column is formed in the top of the housing.

Compared with the prior art, the utility model provides a base and converter of converter possesses following beneficial effect:

1. the utility model discloses utilize two heat conduction baffle to separate into two independent installation cavity with the base inner chamber of shell structure, and leave the ventilation clearance between two heat conduction baffle, set up louvre and inlet port that communicate with the ventilation clearance on the curb plate of base simultaneously, the heat that the electronic components and parts of installation cavity produced can be transmitted to the heat conduction baffle, distribute away the heat by the ventilation clearance again, because the installation cavity is not communicated with the ventilation room, make the base have good heat dissipation, can avoid external dust or steam to enter into the installation cavity, be favorable to prolonging the life of electronic components and parts;

2. the utility model discloses a through setting up the mounting hole that sets up on fan mount and the fan mount, install radiator fan in the mounting hole, start radiator fan, can accelerate the air flow in the ventilation clearance to improve the radiating effect of base;

3. the utility model discloses a protruding heat dissipation arch that sets up in heat conduction baffle one side, the heat dissipation arch has increased heat conduction baffle's heat radiating area, has further improved heat conduction baffle's radiating effect.

Drawings

FIG. 1 is a schematic view of the whole assembly structure of the present invention;

FIG. 2 is a schematic view of the whole machine splitting structure of the present invention;

FIG. 3 is a schematic view of the base structure of the present invention;

fig. 4 is a schematic view of the structure of the casing of the present invention;

FIG. 5 is a schematic view of the sectional structure of the base in plan view;

fig. 6 is a right view of the cutting structure of the utility model.

In the figure: 1. a base; 10. a base plate; 100, respectively; a first positioning hole; 11. a thermally conductive spacer; 110. a heat dissipation projection; 12. a side plate; 120. heat dissipation holes; 121. an air inlet; 13. a fan fixing frame; 130. mounting holes; 14. a limiting frame; 15. a top plate; 150. a wire passing hole; 2. a housing; 20. a second positioning hole; 21. a first positioning post; 22. a first avoidance slot; 23. a second avoidance slot; 3. a top cover; 31. a second positioning column; 4. fixing screws; 5. and (5) installing a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1 to 6, according to an aspect of the present invention, the present embodiment provides a base of a frequency converter, which includes a bottom plate 10, a top plate 15 located above the bottom plate 10, a side plate 12 connecting two ends of the bottom plate 10 and the top plate 15, and a casing 2 sleeved outside the top plate 15 and the side plate 12, wherein a closed shell structure is enclosed between the bottom plate 10, the top plate 15, the side plate 12, and the casing 2, and further includes two heat-conducting partition plates 11, the two heat-conducting partition plates 11 are disposed in parallel between the two side plates 12 and divide an inner cavity of the shell structure into two independent mounting cavities 5, a ventilation gap is left between the two heat-conducting partition plates 11, and the two side plates 12 are respectively provided with a heat dissipation hole 120 and an air inlet hole 121 communicated with the ventilation gap; the two mounting cavities 5 are used for mounting electronic components (such as a main PCBA and a capacitor), most of heat generated by the electronic components can be transmitted to the heat-conducting partition plates 11, and the heat is dissipated by the ventilation gaps, and the ventilation gaps formed by the two heat-conducting partition plates 11 between the two mounting cavities 5 are isolated from the two mounting cavities 5, so that external dust or water vapor can be prevented from entering the mounting cavities 5 through the air inlet holes 121 and the heat dissipation holes 120 at the two ends of the ventilation gaps while good heat dissipation is achieved, and the service life of the electronic components in the mounting cavities 5 is prolonged.

On the basis of the above embodiments, a hollow fan fixing frame 13 communicating with the heat dissipation hole 120 is fixed outside the side plate 12 having the heat dissipation hole 120 in this embodiment, a first avoiding groove 22 is processed on the side wall of the casing 2 corresponding to the fan fixing frame 13, a second avoiding groove 23 is processed on the side wall of the casing 2 corresponding to the air inlet hole 121, a mounting hole 130 for mounting a heat dissipation fan is opened on the fan fixing frame 13, the heat dissipation fan is started, the air flow in the ventilation gap can be accelerated, and thus the heat dissipation effect of the base 1 is improved.

On the basis of above-mentioned embodiment, the inboard outstanding spacing frame 14 that is equipped with of shell structure in this embodiment, heat conduction partition plate 11 is fixed through gluing between sealed glue and the spacing frame 14, so set up, can make things convenient for heat conduction partition plate 11's installation to make two heat conduction partition plates 11 can keep being parallel after the installation, provide effective guarantee for the heat dissipation of base 1.

On the basis of the above embodiment, the heat-conducting partition plate 11 in this embodiment is made of an aluminum alloy material, the wavy heat-dissipating protrusions 110 are formed on opposite sides of the two heat-conducting partition plates 11, and the heat-conducting partition plate 11 made of the aluminum alloy material has the advantages of light weight, good heat-dissipating effect and the like, and the heat-dissipating protrusions 110 are arranged to increase the heat-dissipating area of the heat-conducting partition plate 11, thereby further improving the heat-dissipating effect of the heat-conducting partition plate 11.

According to the utility model discloses a further aspect, this embodiment provides a frequency converter, it includes bottom open-ended cavity top cap 3 and the base 1 of above-mentioned frequency converter, 15 open tops of roof have with top cap 3 communicating cross line hole 150, it is all fixed through fixed screw 4 between top cap 3 and the bottom plate 10 both ends, the control part of mountable frequency converter in top cap 3, the line between the main PCBA in installation cavity 5 on control part and the base 1 can pass through line hole 150, like this can also spread into installation cavity 5 with the heat that produces in the top cap 3 into through line hole 150, in order to avoid the overheat phenomenon to appear in the top cap 3.

On the basis of above-mentioned embodiment, 2 bottoms of cover shell are equipped with first reference column 21 in this embodiment, bottom plate 10 top is opened has the first locating hole 100 corresponding with first reference column 21, top cap 3 bottom is equipped with second reference column 31, 2 tops of cover shell are opened has the second locating hole 20 corresponding with second reference column 31, the grafting cooperation of first reference column 21 and first locating hole 100, can make to be connected more closely between cover shell 2 and the bottom plate 10, the grafting cooperation of second reference column 31 and second locating hole 20, can make to be connected more closely between cover shell 2 and the top cap 3, thereby improve the overall stability after the converter assembly.

The working principle is as follows: firstly, electronic components (such as a main PCBA and a capacitor) which are easy to generate heat are installed in an installation cavity 5 on a base 1, then a casing 2 is sleeved outside a top plate 15 and a side plate 12, the electronic components are packaged in the base 1, a heat dissipation fan is installed on a fan fixing frame 13, then a control part of a frequency converter is installed at the top of the top plate 15 and is connected with the electronic components in the base 1 through a lead, finally, a top cover 3 is covered on the top of the casing 2, the top cover 3 is fixedly connected with the base 1 through a fixing screw 4, the installation of the frequency converter is completed, when the frequency converter is put into use, on one hand, most of heat generated by the electronic components in the installation cavity 5 can be transmitted to a heat conduction partition plate 11 and can be dissipated through a ventilation gap, on the other hand, after the heat dissipation fan on one side of the base 1 is started, air in the ventilation gap can be increased to flow, provide more effective heat dissipation for the electronic components in the installation cavity 5, simultaneously, because the draft gap does not communicate with each other with two installation cavities 5, consequently, base 1 has good heat dissipation simultaneously, can avoid external dust or steam to enter into in the installation cavity 5 through inlet hole 121 and louvre 120 at draft gap both ends to effectively prolong the life of electronic components in the installation cavity 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a base of converter, includes bottom plate (10), is located roof (15) of bottom plate (10) top, connect bottom plate (10) with curb plate (12) and the cover at roof (15) both ends are located roof (15) with cover (2) outside curb plate (12), bottom plate (10), roof (15) curb plate (12) with enclose into a closed shell structure between cover (2), its characterized in that: still include two heat conduction baffle (11), two heat conduction baffle (11) parallel arrangement in two between curb plate (12) and will the shell structure inner chamber separates into two independent installation cavity (5), two leave the ventilation gap between heat conduction baffle (11), two seted up respectively on curb plate (12) with the communicating louvre (120) in ventilation gap and inlet port (121).

2. The base of a frequency converter according to claim 1, characterized in that: a hollow fan fixing frame (13) communicated with the heat dissipation hole (120) is fixed on the outer side of the side plate (12) provided with the heat dissipation hole (120), and a mounting hole (130) for mounting a heat dissipation fan is formed in the fan fixing frame (13).

3. The base of a frequency converter according to claim 2, characterized in that: the fan cover is characterized in that a first avoiding groove (22) is formed in the side wall corresponding to the fan fixing frame (13) of the cover shell (2), and a second avoiding groove (23) is formed in the side wall corresponding to the air inlet hole (121) of the cover shell (2).

4. The base of a frequency converter according to claim 1, characterized in that: the shell structure is characterized in that a limiting frame (14) protrudes from the inner side of the shell structure, and the heat-conducting partition plate (11) is fixedly bonded with the limiting frame (14) through sealant.

5. The base of a frequency converter according to claim 1, characterized in that: the heat-conducting partition plates (11) are made of aluminum alloy materials, and wave-shaped heat-radiating bulges (110) are formed and protruded on the opposite sides of the two heat-conducting partition plates (11).

6. A frequency converter is characterized in that: the frequency converter comprises a hollow top cover (3) with an opening at the bottom and a base of the frequency converter as claimed in any one of claims 1 to 5, wherein a wire passing hole (150) communicated with the top cover (3) is formed in the top of the top plate (15), and the top cover (3) and the bottom plate (10) are fixed through fixing screws (4).

7. The frequency converter of claim 6, wherein: the bottom of the casing (2) is provided with a first positioning column (21), the top of the bottom plate (10) is provided with a first positioning hole (100) corresponding to the first positioning column (21), the bottom of the top cover (3) is provided with a second positioning column (31), and the top of the casing (2) is provided with a second positioning hole (20) corresponding to the second positioning column (31).