CN210273849U

CN210273849U - A switching power supply of a frequency converter

Info

Publication number: CN210273849U
Application number: CN201921347900.8U
Authority: CN
Inventors: 施甘东
Original assignee: Guangzhou Longzi'an Electric Co Ltd
Current assignee: Guangzhou Longzi'an Electric Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-04-07
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a switching power supply of a frequency converter, which comprises a base, a cooling fan and an inner casing. An inner casing is installed above the base, a power supply main body is installed inside the inner casing, and two sides of the inner casing are clamped and connected with heat conduction. The inner side of the heat-conducting sheet is installed with thermally conductive silicone grease, the outer side of the heat-conducting sheet is installed with cooling fins, the outer side of the inner shell is sleeved with a shell, the outer shell is fixedly connected to the base by screws, and a cooling fan is installed on the top of the inner shell to dissipate heat. A dustproof net is installed inside the casing above the fan, and a heat dissipation slot is opened on the top of the casing above the dustproof net. The utility model solves the problems that the switching power supply of the frequency converter lacks a rapid heat dissipation structure and inconvenient installation and maintenance of the switching power supply by arranging a cooling fan, a thermal conductive silicone grease, a thermal conductive sheet, a cooling fin, a base, an inner casing and an outer casing.

Description

Switching power supply of frequency converter

Technical Field

The utility model relates to a converter technical field specifically is a switching power supply of converter.

Background

A Variable-frequency drive (VFD) is a power control device that applies frequency conversion technology and microelectronic technology to control an ac motor by changing the frequency of a working power supply of the motor. The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detection unit micro-processing unit and the like. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off an internal IGBT, provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy saving and speed regulation. With the continuous improvement of the industrial automation degree, the frequency converter is also widely applied. The frequency converter is used by a switching power supply, which is also called as an exchange power supply or a switching converter, and is a high-frequency power conversion device. The function is to convert a level voltage into a voltage or current required by the user terminal through different types of architectures.

However, the prior art has the following defects:

1. when the frequency converter is used, the frequency converter needs a switching power supply for supplying power, but the conventional switching power supply generates a large amount of heat when working for supplying power, and if the heat is not dissipated in time, the load is caused on the switching power supply, so that the service life is reduced;

2. when the switching power supply supplies power to the frequency converter, the switching power supply needs to be installed according to the size of the frequency converter, and the existing switching power supply is very inconvenient to install and maintain.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a switching power supply of converter has solved the switching power supply of converter and has lacked quick heat radiation structure and switching power supply's the inconvenient problem of installation and maintenance.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a switching power supply of converter, includes base, radiator fan and inner shell, the inner shell is installed to the top of base, the internally mounted of inner shell has the power supply main part, the both sides joint of inner shell has the conducting strip, heat conduction silicone grease is installed to the inboard of conducting strip, radiating fin is installed in the outside of conducting strip, the outside cover of inner shell is equipped with the shell, the shell passes through screw and base fixed connection, radiator fan is installed on the inside top of shell, the shell internally mounted of radiator fan top has the dust screen, the radiating groove has been seted up at the shell top of dust screen top.

Preferably, threaded grooves are formed in four corners of the top of the shell, and the shell is locked and fixed with the base through screws screwed into the threaded grooves.

Preferably, the front side of the shell is provided with a power connector, the front side of the shell on one side of the power connector is provided with a power switch, and the output end of the power supply main body is connected with the power connector through the power switch.

Preferably, grooves are formed in two sides of the inner shell, the heat conducting fins are clamped in the grooves, and a wire guide groove is formed in the front side of the inner shell.

Preferably, the two sides of the outer shell are provided with slots, the radiating fins on the outer side of the heat conducting fins penetrate through the slots and are located on the outer portion of the outer shell, and the heat conducting silicone grease on the inner side of the heat conducting fins displaces the inner shell.

Preferably, four corners of the base are provided with mounting holes.

(III) advantageous effects

The utility model provides a switching power supply of converter possesses following beneficial effect:

(1) the utility model has the advantages that the utility model has the double heat dissipation mechanism by arranging the heat dissipation fan, the heat conduction silicone grease, the heat conducting fins and the heat dissipation fins, the switch power supply of the frequency converter is efficiently dissipated, the loss caused by the heat generated during the work is reduced, thereby effectively solving the problem that the switch power supply of the frequency converter lacks a rapid heat dissipation structure, when the heat dissipation of the power supply main body is carried out, the power supply main body is arranged inside the inner shell, the heat conducting fins are clamped in the grooves at the two sides of the inner shell, the heat dissipated by the power supply main body during the work is absorbed by the heat conduction silicone grease, the heat is transmitted by the heat conducting fins and is dissipated to the outside by the heat dissipation fins through the slots at the two sides of the outer shell, meanwhile, the heat dissipation fan arranged at the top end inside the outer shell attracts the heat in the inner shell, and blows to the outside through the, the heat of the power supply main body is conducted and dissipated to the maximum extent.

(2) The utility model discloses a set up base, inner shell, make the utility model discloses be convenient for install and maintenance, it is more convenient to use, and the suitability is wider to effectual installation maintenance inconvenient problem of having solved switching power supply is being gone on the utility model discloses a during fixed mounting, base and inner shell are welded fastening, and power main part installs inside the inner shell, and the shell passes through screw in thread groove and base fixed to the cover is established in the inner shell outside, protects the inside of inner shell, when needing to overhaul power main part, only need can dismantle the shell through the screw rotation, overhauls the part inside the inner shell, and the four corners of base is equipped with the mounting hole, and the accessible bolt is fixed the base to the mounting hole, realizes the installation.

Drawings

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

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a top view of the present invention with the outer shell removed;

fig. 4 is a schematic perspective view of the inner shell of the present invention.

The reference numbers in the figures are: 1. a base; 2. a heat dissipating fin; 3. grooving; 4. a power supply connector; 5. mounting holes; 6. a thread groove; 7. a heat sink; 8. a housing; 9. a power switch; 10. a heat radiation fan; 11. a dust screen; 12. a screw; 13. an inner shell; 14. heat-conducting silicone grease; 15. a heat conductive sheet; 16. a power supply main body; 17. a wire guide groove; 18. and (4) a groove.

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.

As shown in fig. 1-4, the utility model provides a technical solution: a switching power supply of a frequency converter comprises a base 1, a heat radiation fan 10 and an inner shell 13, wherein mounting holes 5 are formed in four corners of the base 1, the inner shell 13 is installed above the base 1, a power supply main body 16 is installed inside the inner shell 13, a power supply connector 4 is installed on the front side of the outer shell 8 on one side of the power supply connector 4, a power supply switch 9 is installed on the front side of the outer shell 8 on one side of the power supply connector 4, the output end of the power supply main body 16 is connected with the power supply connector 4 through the power supply switch 9, heat conducting fins 15 are clamped on two sides of the inner shell 13, grooves 18 are arranged on two sides of the inner shell 13, the heat conducting fins 15 are clamped in the grooves 18, a wire guide groove 17 is arranged on the front side of the inner shell 13, the wire guide groove 17 is used for alternately connecting electric power of electronic equipment inside the inner shell 13, the power supply main body 16 needs to be connected, the radiating fins 2 are arranged on the outer side of the heat conducting strip 15, the outer shell 8 is sleeved on the outer side of the inner shell 13, the two sides of the outer shell 8 are provided with the slots 3, the radiating fins 2 on the outer side of the heat conducting strip 15 pass through the slots 3 and are positioned on the outer side of the outer shell 8, the heat conducting silicone grease 14 on the inner side of the heat conducting strip 15 is displaced in the inner shell 13, the outer shell 8 is fixedly connected with the base 1 through the screws 12, the four corners of the top of the outer shell 8 are provided with the thread grooves 6, the outer shell 8 is screwed into the thread grooves 6 through the screws 12 and is locked and fixed with the base 1, when the fixing installation of the utility model is carried out, the base 1 and the inner shell 13 are fixed through welding, the power supply main body 16 is installed in the inner shell 13, the outer shell 8 is fixed with the base 1 through the screws 12 and is sleeved on the outer side of the inner, the four corners of the base 1 are provided with mounting holes 5, the base 1 can be fixed through the mounting holes 5 through bolts to realize mounting, the top end inside the outer shell 8 is provided with a heat radiation fan 10, the inner part of the outer shell 8 above the heat radiation fan 10 is provided with a dust screen 11, the top part of the outer shell 8 above the dust screen 11 is provided with a heat radiation groove 7, when the heat radiation of the power main body 16 is carried out, the power main body 16 is arranged inside the inner shell 13, the grooves 18 at the two sides of the inner shell 13 are clamped with heat conducting fins 15, the heat radiated by the power main body 16 during working is absorbed through heat conducting silicone grease 14 and is transmitted through the heat conducting fins 15 and then is radiated to the outside through the heat radiation fins 2 penetrating through the grooves 3 at the two sides of the outer shell 8, meanwhile, the heat radiation fan 10 arranged at the top end inside the outer shell 8 attracts the heat radiation fan 10 and blows to the outside through the dust screen, the heat of the power supply main body 16 is conducted and dissipated to the maximum extent.

The working principle is as follows: when the fixing installation of the utility model is carried out, the base 1 and the inner shell 13 are welded and fixed, the power main body 16 is installed inside the inner shell 13, the outer shell 8 is screwed into the thread groove 6 through the screw 12 and fixed with the base 1 and sleeved outside the inner shell 13 to protect the inside of the inner shell 13, when the power main body 16 needs to be overhauled, the outer shell 8 can be disassembled only by rotating the screw 12, the parts inside the inner shell 13 are overhauled, the four corners of the base 1 are provided with the installation holes 5, the base 1 can be fixed through the bolts, the output end of the power main body 16 is connected with the power connector 4 through the power switch 9, the power switch 9 is opened to connect the power main body 16 with the power connector 4, the power can be supplied through the external wire connecting power connector 4, when the heat dissipation of the power main body 16 is carried out, the power main body 16 is installed inside, the heat conduction piece 15 is connected to the grooves 18 on the two sides of the inner shell 13 in a clamping mode, heat emitted by the power supply main body 16 during working is absorbed through the heat conduction silicone grease 14, heat is transmitted through the heat conduction piece 15, the heat is emitted to the outside through the heat dissipation fins 2 penetrating through the grooves 3 on the two sides of the outer shell 8, meanwhile, the heat dissipation fan 10 mounted on the top end of the inner part of the outer shell 8 attracts heat in the inner shell 13, the heat is blown to the outside through the dustproof net 11 and guided to the heat dissipation groove 7, and the electric heat dissipation function is achieved.

To sum up, the utility model discloses a set up radiator fan 10, heat conduction silicone grease 14, conducting strip 15, radiating fin 2, base 1, inner shell 13, shell 8 structure, the inconvenient problem of installation and overhaul that the switching power supply of having solved the converter lacks quick heat radiation structure and switching power supply.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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. A switching power supply of a frequency converter, comprising a base (1), a cooling fan (10) and an inner casing (13), characterized in that: an inner casing (13) is installed above the base (1), A power supply main body (16) is installed inside the inner shell (13), thermally conductive sheets (15) are clamped on both sides of the inner shell (13), and thermally conductive silicone grease is mounted on the inner side of the thermally conductive sheet (15). (14), the heat dissipation fins (2) are mounted on the outer side of the heat conducting sheet (15), the outer shell (8) is sleeved on the outer side of the inner shell (13), and the outer shell (8) is provided with screws (12) It is fixedly connected to the base (1), a cooling fan (10) is installed at the top of the inner casing (8), and a dust filter (11) is installed inside the outer casing (8) above the cooling fan (10). A heat dissipation groove (7) is provided on the top of the casing (8) above the dustproof net (11).

2. The switching power supply of a frequency converter according to claim 1, wherein the four corners of the top of the casing (8) are provided with threaded grooves (6), and the casing (8) is screwed by screws (12). The threaded groove (6) is locked and fixed with the base (1).

3. The switching power supply of a frequency converter according to claim 1, characterized in that: a power connector (4) is installed on the front side of the housing (8), and a housing (4) on one side of the power connector (4) is installed. 8) A power switch (9) is installed on the front side, and the output end of the power supply main body (16) is connected to the power connector (4) through the power switch (9).

4 . The switching power supply of a frequency converter according to claim 1 , wherein grooves ( 18 ) are provided on both sides of the inner shell ( 13 ), and the heat conducting sheets ( 15 ) are clamped in the grooves 4 . In the groove (18), a wire groove (17) is provided on the front side of the inner shell (13).

5 . The switching power supply of a frequency converter according to claim 1 , characterized in that: slots ( 3 ) are provided on both sides of the casing ( 8 ), and heat dissipation fins on the outer side of the heat conducting sheet ( 15 ) are provided. 6 . (2) Passing through the slot (3) to be located outside the outer casing (8), and the thermally conductive silicone grease (14) inside the thermally conductive sheet (15) is displaced inside the inner casing (13).

6 . The switching power supply of a frequency converter according to claim 1 , wherein the four corners of the base ( 1 ) are provided with mounting holes ( 5 ). 7 .