CN210578332U

CN210578332U - Fastening type frequency converter

Info

Publication number: CN210578332U
Application number: CN201921771802.7U
Authority: CN
Inventors: 何珍; 陈鹏程; 张希; 李勇; 刘红毅; 李玉平
Original assignee: Shenzhen Ambition Electronics Co ltd
Current assignee: Shenzhen Ambition Electronics Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-05-19
Anticipated expiration: 2029-10-21

Abstract

The utility model discloses a buckled frequency converter, which comprises an upper shell, a radiator and a lower shell, wherein the upper shell is used for accommodating frequency converter components, and the lower ends of two opposite side plates are respectively provided with a bayonet; the radiator comprises a radiating top plate, wherein one side of the radiating top plate extends downwards to form a side support plate, the bottom end of the side support plate is provided with a support bottom plate, the side support plate extends towards the other side of the radiating top plate along the height direction along the direction parallel to the radiating top plate to form a plurality of radiating fins, and the radiating fins are distributed at intervals to form a radiating air duct; the lower shell is used for placing a radiator and comprises a bottom plate, and the bottom plate is provided with a lug boss corresponding to the bayonet; the one end of this bottom plate is fixed with the mounting bracket and installs the fan in it, and this mounting bracket encloses a installation roof and two installation curb plates that close to form a both ends open-ended cavity on the bottom plate, and this opening is put into in the cavity towards radiator and fan, and the installation curb plate of keeping away from the side extension board extends to the other end of bottom plate along the side of bottom plate.

Description

Fastening type frequency converter

Technical Field

The utility model relates to a converter field especially relates to a buckled converter.

Background

The frequency conversion technology is produced according to the requirement of stepless speed regulation of the alternating current motor. The frequency converter is mainly used for adjusting the rotating speed of an alternating current motor, and along with the improvement of components required by markets for transmission products, the speed regulation of the frequency converter plays an increasingly important role in many speed control application fields due to the advantages of wide speed regulation range, high speed regulation precision, good dynamic response and the like of the frequency converter. The existing frequency converter is unreasonable in heat dissipation design, poor in heat dissipation effect, easy to cause burning out of a circuit board, unreasonable in structural design and extremely inconvenient in later maintenance.

Therefore, there is a need for a snap-in converter with a reasonable heat dissipation design and simple assembly to solve the above-mentioned drawbacks, so as to facilitate assembly, disassembly and maintenance.

Disclosure of Invention

The utility model aims to solve the technical problem that a buckled converter that heat dissipation reasonable in design and assembly are simple is provided so that dismouting and maintenance.

In order to solve the technical problem, the utility model discloses a as follows technical scheme: a buckled frequency converter comprises an upper shell, a radiator and a lower shell, wherein the upper shell is used for accommodating frequency converter components, and the lower ends of two opposite side plates of the upper shell are respectively provided with at least one bayonet; the radiator comprises a radiating top plate, one side of the radiating top plate extends downwards to form a side supporting plate, the bottom end of the side supporting plate is provided with a supporting bottom plate, the side supporting plate extends towards the other side of the radiating top plate along the height direction of the side supporting plate along the direction parallel to the radiating top plate to form a plurality of radiating fins, and the radiating fins are distributed at intervals to form a radiating air duct; the lower shell is used for placing the radiator, the lower shell comprises a bottom plate, and the bottom plate is provided with a lug which is matched and clamped with the bayonet corresponding to the bayonet so as to cover the lower part of the upper shell and enable the lower shell to be detachably connected with the upper shell; the one end of casing is provided with one side down to the fan in heat dissipation wind channel, the one end of bottom plate is served the vertical fixation and is had a confession the mounting bracket of fan installation, the mounting bracket includes an installation roof and divides to locate the installation curb plate of installation roof both sides, installation roof and two installation curb plates enclose on the bottom plate and close and form a both ends open-ended cavity, the opening towards the radiator just the fan set up in the cavity, keep away from the installation curb plate of side extension board is followed the side edge of bottom plate extends to the other end by the one end of bottom plate.

The further technical scheme is as follows: and ventilation openings are respectively formed in the side plates of the upper shell corresponding to the two ends of the heat dissipation air duct.

The further technical scheme is as follows: the frequency converter component comprises a driving board, the driving board is installed on the radiator through copper columns, a plurality of IGBT units are uniformly distributed on one side, close to the side supporting plate, of the bottom of the driving board along the length direction of the side supporting plate, and each IGBT unit is abutted and locked with the side supporting plate through screws.

The further technical scheme is as follows: and a capacitor bank is arranged on one side of the bottom of the driving board, which is far away from the side support plate, an isolation bin is arranged on the bottom plate corresponding to the capacitor bank, and the capacitor bank is arranged in the isolation bin to isolate the radiator from the capacitor bank.

The further technical scheme is as follows: the isolation bin comprises a supporting baffle facing the fan and a side baffle which is arranged opposite to the installation side plate far away from the side support plate and is positioned between the radiator and the capacitor bank, and the supporting baffle, the side baffle and the installation side plate are enclosed on the bottom plate to form an accommodating space.

The further technical scheme is as follows: the supporting baffle plate is provided with a vent hole.

The further technical scheme is as follows: the frequency converter component further comprises a control board, and the control board is installed on the driving board through a supporting column.

The further technical scheme is as follows: the control panel is provided with a wiring area for setting a wiring terminal and a wiring net opening, the upper shell corresponds to the wiring area to form a wiring opening, and an upper cover plate is covered on the wiring opening.

The further technical scheme is as follows: the buckling type frequency converter further comprises a bottom cover plate, an inlet for the fan to be placed in is formed below the mounting frame by the bottom plate, a sealing block is formed by upward extending the position, corresponding to the inlet, of the bottom cover plate, and the sealing block covers the position of the inlet so that the fan is fixed in the mounting frame.

The further technical scheme is as follows: a plurality of wiring holes are formed in the upper shell, and extend upwards towards the outer side of the upper shell.

The utility model has the advantages of: the buckled converter holds converter components and parts in the upper casing, the radiator is installed in the lower casing, a mounting bracket for installing a fan is arranged on the lower casing, the mounting bracket is far away from the side plate of the side support plate and extends to the other end from one end of the bottom plate along the side edge of the bottom plate, so that hot air generated by a heat dissipation air channel circulates between the side plate and the side support plate, the sealing performance is strong, the frequency converter components and parts are prevented from being damaged, an independent heat dissipation air channel is formed, the heat dissipation effect is good, the casing structure is simple, the bayonet is arranged at the lower end of the side plate of the upper casing, and the bottom plate of the lower casing corresponds to the bayonet and is provided with a lug which is matched and connected with the bayonet, so that the lower casing and the upper casing can be.

Drawings

FIG. 1 is a schematic structural view of a fastening type frequency converter according to the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an exploded view of the snap-together inverter shown in FIG. 1;

FIG. 4 is an exploded view of the snap-together inverter shown in FIG. 1 from another perspective;

fig. 5 is a schematic structural view of the lower case of the fastening type frequency converter of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 4, in the present embodiment, the fastening type frequency converter 10 includes an upper housing 110, a heat sink 120 and a lower housing 130, the upper housing 110 is used for accommodating a frequency converter component 140, and the lower ends of two opposite side plates 111 of the upper housing 110 are respectively provided with at least one bayonet 112. The heat sink 120 includes a heat dissipating top plate 121, a side support plate 122 is formed by extending one side of the heat dissipating top plate 121 downward, a supporting bottom plate 123 is disposed at a bottom end of the side support plate 122, the side support plate 122 extends along a height direction of the side support plate 122 toward the other side of the heat dissipating top plate 121 in a direction parallel to the heat dissipating top plate 121, and a plurality of heat dissipating fins 124 are formed by the heat dissipating fins 124 at intervals to form a heat dissipating air duct 125. The lower housing 130 is used for placing the heat sink 120, the lower housing 130 includes a bottom plate 131, the bottom plate 131 is provided with a protrusion 132 corresponding to the bayonet 112 and engaged with the bayonet 112 to cover the lower portion of the upper housing 110, so that the lower housing 130 is detachably connected to the upper housing 110. A fan 133 facing the heat dissipation air duct 125 is disposed at one end of the lower housing 130, a mounting bracket 134 for mounting the fan 133 is vertically fixed at one end of the bottom plate 131, the mounting bracket 134 includes a mounting top plate 1341 and mounting side plates 1342 respectively disposed at two sides of the mounting top plate 1341, the mounting top plate 1341 and the mounting side plates 1342 enclose a cavity 1343 with two open ends on the bottom plate 131, the opening faces the heat sink 120, the fan 133 is disposed in the cavity 1343, and the mounting side plates 1342 far away from the side support plates 122 extend from one end of the bottom plate 131 to the other end of the bottom plate 131 along the side edge of the bottom plate 131.

Specifically, the upper housing 110 includes an upper top plate 113 and four side plates 111 enclosing together, a label adhering region 116 for adhering labels of the power and the model of the frequency converter is provided on the upper top plate 113, two bayonets 112 are provided at the lower ends of the side plates 111 at the left and right sides of the upper housing 110, correspondingly, the lower housing 130 is provided with two protrusions 132 at the left and right sides of the bottom plate 131 corresponding to the bayonets 112, the heat sink 120 is provided on the bottom plate 131, and the bayonets 112 are clamped into the protrusions 132 to detachably fix the upper housing 110 and the heat sink 120. Preferably, the lower end of the side plate 111 at the rear end of the upper housing 110 is provided with a bayonet 112, and correspondingly, the rear end of the bottom plate 131 is provided with a projection 132 corresponding to the bayonet 112. The heat sink 120 is disposed on the bottom plate 131 of the lower housing 130 in a state that the side branch plate 122 faces the side plate 111 on the left side of the upper housing 110, and the mounting side plate 1342 of the mounting block 134, which is far away from the side branch plate 122, extends from one end of the bottom plate 131 to the other end of the bottom plate 131 along the edge of the right side of the bottom plate 131, so that hot air generated by the heat dissipation air duct 125 circulates between the mounting side plate 1342 and the side branch plate 122, and the heat dissipation effect is good, thereby avoiding damage to the frequency converter component 140, forming an independent heat dissipation air duct 125.

The upper casing 110, the heat sink 120 and the lower casing 130 are designed independently, the heat dissipation air duct 125 is independent, the heat dissipation effect is good, the upper casing 110 and the lower casing 130 are clamped and connected with each other through the bayonet 112 and the projection 132 in a matched manner, so that the assembly and disassembly of the buckling type frequency converter 10 are facilitated, the maintenance is more convenient, and the heat dissipation fins 124 of the heat sink 120 can be prevented from being damaged by the matching of the upper casing 110 and the lower casing 130. Meanwhile, the fan 133 is used to accelerate the air flow of the heat dissipation air duct 125, so as to further improve the heat dissipation effect of the heat sink 120. Preferably, ventilation openings 1111 are respectively formed on the side plates 111 at the front and rear ends of the upper housing 110 corresponding to the front and rear ends of the heat dissipation duct 125. The air duct opening 1112 of the ventilation opening 1111 is attached to the heat dissipation air duct 125 to improve the heat dissipation effect. The front end of the lower housing 130 and the front end of the upper housing 110 are both correspondingly located at the front end of the heat dissipation air duct 125, the fan 133 is disposed facing the front end of the heat dissipation air duct 125, so that air is drawn into the heat dissipation air duct 125 from the ventilation opening 1111 at the rear side of the upper housing 110, hot air is guided out from the ventilation opening 1111 at the fan 133 side, and the heat dissipation effect is improved.

Preferably, in this embodiment, the frequency converter component 140 includes a driving board 141, the driving board 141 is mounted on the heat sink 120 through a copper pillar 1411, a plurality of IGBT units 1412 are uniformly distributed at a side of the bottom of the driving board 141 close to the side support plate 122 along a length direction thereof, and each IGBT unit 1412 abuts against and is locked with the side support plate 122 through a screw, so as to achieve heat dissipation. Specifically, the total number of the copper pillars 1411 is four, and the copper pillars 1411 are respectively disposed at the front and rear ends of the heat dissipation top plate 121, two receiving holes for the copper pillars 1411 to be disposed are respectively formed at the front and rear ends of the heat dissipation top plate 121, one end of the copper pillar 1411 is fixed in the receiving hole, and the other end of the copper pillar 1411 is fixed to the driving board 141, so that the driving board 141 is mounted on the heat dissipation top plate 121 of the heat sink 120. Through the copper column 1411, a heat dissipation space exists between the driving board 141 and the heat sink 120, the bottom line connection is facilitated, the heat sink 120 and the driving board 141 can be rapidly installed, the assembly and disassembly are facilitated, and the maintenance of the buckling type frequency converter 10 is facilitated.

Preferably, with reference to fig. 3 to fig. 5, in this embodiment, a capacitor bank 1413 is disposed on a side of the bottom of the driving board 141 away from the side support plate 122, an isolation bin 135 is disposed on the bottom plate 131 corresponding to the capacitor bank 1413, and the capacitor bank 1413 is disposed in the isolation bin 135 to isolate the heat sink 120 from the capacitor bank 1413, so as to prevent the capacitor bank 1413 from being damaged by the hot air emitted from the heat sink 120. Specifically, the isolation chamber 135 includes a supporting baffle plate 1351 facing the fan 133 and a side baffle plate 1352 disposed opposite to the mounting side plate 1342 away from the side support plate 122 and located between the heat sink 120 and the capacitor set 1413, the supporting baffle plate 1351, the side baffle plate 1352 and the mounting side plate 1342 enclose a receiving space 1353 on the bottom plate 131, and the isolation chamber 135 is configured to be open at an upper end for receiving the capacitor set 1413. Specifically, the baffle 1351 is close to the fan 133 and is provided with a vent 1354, so that the fan 133 is used to draw air into the isolation bin 135 and guide the air out, so as to dissipate heat of the capacitor bank 1413. The front end of the isolation bin 135 is the branch baffle 1351, and the rear end of the isolation bin 135 can be in an open design relative to the branch baffle 1351, so that the fan 133 can be used to draw air from the ventilation opening 1111 at the rear side of the upper housing 110, and the air is guided out from the ventilation opening 1111 at the fan 133 side after entering the isolation bin 135, so as to accelerate the heat dissipation effect on the capacitor bank 1413.

In some embodiments, the upper housing 110 has a plurality of wiring holes 1101, and specifically, the upper housing 110 and the upper top plate 113 have a plurality of wiring holes 1101, and the wiring holes 1101 are preferably circular and extend upward toward the outer side of the upper housing 110, so that the appearance of the snap-together frequency converter 10 can be decorated, the screwdriver can be accurately positioned, and the wiring is convenient and quick.

Specifically, in this embodiment, the frequency converter component 140 further includes a control board 142, and the control board 142 is mounted on the driving board 141 through a supporting column 1421. The total number of the support columns 1421 is four, two support column mounting positions are respectively arranged on the left side and the right side of the upper surface of the drive board 141, support column accommodating holes are formed in the lower surface of the control board 142 corresponding to the support column mounting positions of the drive board 141, one end of each support column 1421 is pressed into each support column mounting position in a pressing mode, and the other end of each support column 1421 is pressed into each support column accommodating hole in a pressing mode, so that the control board 142 is mounted on the drive board 141, the support columns 1421 are used for rapidly mounting the control board 142 and the drive board 141, disassembly and assembly are facilitated, maintenance of the buckling type frequency converter 10 is facilitated, and a heat dissipation space exists between the drive board 141 and the control board 142.

Preferably, in this embodiment, the control board 142 is provided with a wiring area 143 for providing the wiring terminal 1431 and the wiring network port 1432, the upper housing 110 is formed with a wiring opening corresponding to the wiring area 143, which is convenient for the wiring operation of the user, and the wiring opening is covered with an upper cover plate 114 to protect the wiring terminal 1431 and the wiring network port 1432 from being damaged by the outside. The wiring area 143 and the wiring hole 1101 of the upper housing 110 are respectively and correspondingly located on two opposite sides of the upper housing 110, specifically, the wiring area 143 is correspondingly located at the front end of the upper housing 110, the wiring hole 1101 of the upper housing 110 is located at the rear end of the upper housing 110, the upper cover plate 114 is hinged to the upper top plate 113, the upper cover plate 114 can be opened and closed by rotating the upper cover plate 114, and the operation is convenient and simple. Preferably, an observation port 115 is formed at an upper end of one side plate 111 of the upper case 110, so as to facilitate observation of whether the cables are compressed during the wire connecting operation, and the observation port 115 may be disposed on the side plate 111 facing the wire connecting region 143.

With reference to fig. 3, in the present embodiment, the fastening type frequency converter 10 further includes a bottom cover plate 150, the bottom plate 131 forms an inlet 1344 below the mounting bracket 134 for the fan 133 to be inserted into, the bottom cover plate 150 extends upward to form a sealing block 151 corresponding to the inlet 1344, and the sealing block 151 covers the inlet 1344 to fix the fan 133 in the mounting bracket 134.

To sum up, the utility model discloses buckled converter is with converter components and parts holding in the upper casing, and the radiator is installed in the inferior valve internally, is provided with the mounting bracket of air supply fan installation under on the casing, and the keeping away from of mounting bracket the installation curb plate of side extension board extends to the other end of bottom plate along the side of bottom plate to make the hot-blast circulation between this installation curb plate and side extension board that the heat dissipation wind channel produced, the leakproofness is strong, and avoid causing the damage to converter components and parts, form independent heat dissipation wind channel, the radiating effect is good, and shell structure is simple, sets up the bayonet socket through the lower extreme of the curb plate of last casing and the bottom plate of casing corresponds the lug of bayonet socket setting and bayonet socket cooperation joint so that the casing can be dismantled with the last casing down and be connected, the dismouting of being convenient for.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims

1. A buckled converter which characterized in that, including:

the lower ends of two opposite side plates of the upper shell are respectively provided with at least one bayonet;

the radiator comprises a radiating top plate, one side of the radiating top plate extends downwards to form a side supporting plate, the bottom end of the side supporting plate is provided with a supporting bottom plate, the side supporting plate extends towards the other side of the radiating top plate along the height direction of the side supporting plate along the direction parallel to the radiating top plate to form a plurality of radiating fins, and the radiating fins are distributed at intervals to form a radiating air duct;

the lower shell is used for placing the radiator and comprises a bottom plate, and the bottom plate is provided with a convex block which is matched and clamped with the bayonet corresponding to the bayonet so as to cover the lower part of the upper shell and enable the lower shell to be detachably connected with the upper shell; the one end of casing is provided with one side down to the fan in heat dissipation wind channel, the one end of bottom plate is served the vertical fixation and is had a confession the mounting bracket of fan installation, the mounting bracket includes an installation roof and divides to locate the installation curb plate of installation roof both sides, installation roof and two installation curb plates enclose on the bottom plate and close and form a both ends open-ended cavity, the opening towards the radiator just the fan set up in the cavity, keep away from the installation curb plate of side extension board is followed the side edge of bottom plate extends to the other end by the one end of bottom plate.

2. The fastened frequency converter according to claim 1, wherein ventilation openings are respectively formed in the side plates of said upper housing corresponding to both ends of said heat dissipation duct.

3. The fastened frequency converter according to claim 1, wherein said frequency converter components include a driver board, said driver board is mounted on said heat sink through copper posts, a plurality of IGBT units are uniformly distributed along a length direction of one side of said driver board near said side support plate at a bottom thereof, and each of said IGBT units is abutted against and locked to said side support plate through screws.

4. The fastened frequency converter according to claim 3, wherein a capacitor bank is disposed on a side of the bottom of said driving board away from said side support plate, and an isolation chamber is disposed on said bottom board corresponding to said capacitor bank, said capacitor bank being disposed in said isolation chamber to isolate said heat sink from said capacitor bank.

5. The fastened frequency converter according to claim 4, wherein said isolation chamber comprises a supporting baffle facing said fan and a side baffle disposed opposite to said side plate and between said heat sink and said capacitor bank, and said supporting baffle, said side baffle and said side plate enclose a receiving space on said bottom plate.

6. The fastened frequency converter according to claim 5, wherein said back-up plate is provided with a vent hole.

7. The latched frequency converter according to claim 3, wherein said frequency converter component further comprises a control board, said control board being mounted to said drive board by means of support posts.

8. The fastened frequency converter according to claim 7, wherein said control board has a wiring area for connecting terminals and a wiring mesh, said upper housing has a wiring opening corresponding to said wiring area, and said wiring opening is covered by an upper cover plate.

9. The fastened frequency converter according to claim 1, further comprising a bottom cover plate, wherein the bottom plate forms an inlet for the blower to be inserted into under the mounting bracket, the bottom cover plate extends upward to form a sealing block corresponding to the inlet, and the sealing block covers the inlet to fix the blower in the mounting bracket.

10. The latched frequency converter according to claim 1, wherein said upper housing defines a plurality of wiring holes, said wiring holes extending upward toward an outer side of said upper housing.