CN218868084U - Frequency converter with independent air channel - Google Patents
Frequency converter with independent air channel Download PDFInfo
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- CN218868084U CN218868084U CN202221662555.9U CN202221662555U CN218868084U CN 218868084 U CN218868084 U CN 218868084U CN 202221662555 U CN202221662555 U CN 202221662555U CN 218868084 U CN218868084 U CN 218868084U
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- partition plate
- circuit board
- frequency converter
- heat dissipation
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Abstract
The application discloses a frequency converter with an independent air channel, which comprises a case, a heat dissipation assembly, a capacitor assembly and a first circuit board, wherein the frequency converter utilizes a partition plate to divide the case into a heat dissipation area and a mounting area; and the through holes on the partition plate are equal in number to the capacitors penetrating through the partition plate, the through holes on the partition plate are matched with the capacitors penetrating through the partition plate one by one in size, the edges of the through holes on the partition plate on one side of the mounting area are provided with sealing ribs, and the back of the first circuit board is attached to the sealing ribs. The application provides a converter when placing the high device of this heat dissipation requirement of electric capacity in the independent wind channel of converter, sets up the circuit board interference fit of sealing rib and installation electric capacity on the division board for the radiating effect and the dustproof effect of converter are all good.
Description
Technical Field
The application relates to the technical field of power electronics, in particular to a frequency converter with an independent air channel.
Background
Under the big environment of following energy-concerving and environment-protective, the application place of converter in the trade is wider and wider, for adapting to various application operating mode, keeps product heat dissipation wind channel and circuit board to separate dustproof, forms independent wind channel promptly, becomes one of the important assurance technique of current development product. The existing frequency converter with an independent air channel is poor in heat dissipation effect and dustproof effect.
Disclosure of Invention
The utility model aims at providing a frequency converter that possesses independent wind channel, this frequency converter radiating effect and dustproof effect are all good.
In order to achieve the above object, the present application provides a frequency converter with an independent air duct, which includes a chassis, a heat dissipation assembly, a capacitor assembly, and a first circuit board; a partition plate is arranged in the case and divides the case into a heat dissipation area and a mounting area; the heat dissipation assembly is arranged in the heat dissipation area; the first circuit board is arranged in the mounting area and fixed on the partition plate; the capacitor assembly comprises at least one capacitor, and the at least one capacitor is mounted on the back surface of the first circuit board, penetrates through the partition plate through a through hole in the partition plate and is arranged in the heat dissipation area; the number of the through holes in the partition plate is equal to that of the capacitors penetrating through the partition plate by the capacitor assembly, and the sizes of the through holes in the partition plate are matched with the capacitors penetrating through the partition plate by the capacitor assembly one by one; the edge of the through hole on the partition plate, which is positioned at one side of the mounting area, is provided with a sealing rib, and the back surface of the first circuit board is attached to the sealing rib.
Optionally, the frequency converter further comprises a short-circuit metal strip for connecting the reactor, and a through hole is formed in the short-circuit metal strip; the partition plate is provided with a limiting structure and a through hole which correspond to the short-circuit metal strip; the short-circuit metal strip is matched and fixed on the limiting structure through a plastic shell rib at one side of the partition plate close to the heat dissipation area and a screw at one side of the partition plate close to the installation area.
Optionally, the inner wall of the limiting structure is provided with a dustproof material.
Optionally, an expansion through hole for accessing the switching circuit board is formed in the separation plate, a dustproof material is arranged on one side, located in the installation area, of the separation plate, and the dustproof material is attached to the separation plate and covers the expansion through hole.
Optionally, the frequency converter further comprises a patch circuit board; the partition plate is provided with an expansion through hole for accessing the switching circuit board; the adapter circuit board terminal penetrates through and fills the expansion through hole, so that the adapter circuit board is fixed on the partition plate.
Optionally, the frequency converter further includes a second circuit board for generating a driving signal, and the second circuit board is disposed in the mounting region.
Optionally, the shape of the second circuit board is matched with the shape of the chassis back plate on the side of the partition plate opposite to the mounting area; the second circuit board is installed in parallel to the partition board, and the distance between the edge of the second circuit board and the corresponding side wall of the case is located in a preset interval.
Optionally, a vertical distance between the top end of the side wall of the chassis and the second circuit board is greater than a preset threshold.
Optionally, a fan interface is arranged on the partition plate, and the fan interface is used for arranging the fan connecting terminal.
Optionally, the fan interface edge is provided with a surrounding frame, and the top of the surrounding frame is provided with a sealing rib.
Compared with the prior art, the frequency converter with the independent air channel provided by the application utilizes the partition plate to divide the case into the heat dissipation area and the mounting area, the first circuit board is arranged in the mounting area and fixed on the partition plate, and the at least one capacitor is arranged on the back of the first circuit board and penetrates through the partition plate via the through hole in the partition plate to be arranged in the heat dissipation area; and the through holes on the partition plate are equal in number to the capacitors penetrating through the partition plate, the through holes on the partition plate are matched with the capacitors penetrating through the partition plate one by one in size, the edges of the through holes on the partition plate on one side of the mounting area are provided with sealing ribs, and the back of the first circuit board is attached to the sealing ribs. The application provides a converter when placing the high device of this heat dissipation requirement of electric capacity in the independent wind channel of converter, sets up the circuit board interference fit of sealing rib and installation electric capacity on the division board for the radiating effect and the dustproof effect of converter are all good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a frequency converter with an independent air duct provided in an embodiment of the present application when a first circuit board is not installed;
FIG. 2 is a schematic structural diagram of a frequency converter with an independent air duct according to an embodiment of the present application when a first circuit board is installed;
FIG. 3 is a schematic diagram illustrating a position of a frequency converter with independent air channels where a short-circuited metal strip is installed according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a part where a frequency converter with an independent air duct is installed with a short-circuited metal strip according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a mounted adapter circuit board of a frequency converter with an independent air duct according to an embodiment of the present application;
FIG. 6 is a schematic structural diagram of an unmounted adapter circuit board of a frequency converter with an independent air duct according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a frequency converter with an independent air duct and a second driving plate installed in the frequency converter according to an embodiment of the present application;
FIG. 8 is a schematic illustration of a position of a frequency converter fan interface with independent air channels according to an embodiment of the present disclosure;
FIG. 9 is a schematic structural diagram of a fan outlet portion of a frequency converter with an independent air channel according to an embodiment of the present disclosure;
FIG. 10 is a schematic structural diagram of a second driving board of a frequency converter with an independent air duct according to an embodiment of the present application;
wherein:
1-a case, 2-a partition plate, 3-a first circuit board, 4-a heat dissipation assembly and 5-a second circuit board;
31-a capacitor assembly, 32-a first circuit board fixing screw and 51-a fan interface matching structure;
21-a capacitor through hole, 22-a sealing rib, 23-a short-circuit metal strip mounting structure and 25-a fan interface structure;
231-short-circuit metal strips, 231' -electric reactor wiring studs, 232-through holes, 233-limiting structures and 234-sealing ribs;
241-expanding through holes, 242-dustproof materials and 243-adapting circuit board connecting terminals;
251 fan connection terminals, 252 enclosure, 253 closure ribs.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to fig. 2, fig. 1 is a schematic structural diagram of a frequency converter with an independent air duct provided in an embodiment of the present application when a first circuit board is not installed; fig. 2 is a schematic structural diagram of the frequency converter with an independent air duct according to the embodiment of the present application when the first circuit board is installed. In the present application, the top or the top refers to the upper part of the transducer when placed horizontally, and the bottom or the bottom refers to the lower part of the transducer when placed horizontally.
The embodiment of the application provides a frequency converter with an independent air duct, and the frequency converter comprises a case 1, a partition plate 2, a first circuit board 3, a capacitor assembly 31 and a heat dissipation assembly 4.
The case 1 is a rectangular tubular structure, the partition plate 2 is mounted on the top of the case 1, the case 1 is divided into a heat dissipation area and a mounting area by the partition plate, the mounting area is arranged on the upper side of the partition plate 2, and the heat dissipation area is arranged on the lower side of the partition plate 2. The heat dissipation area is used for achieving heat dissipation of devices in the case 1, openings are formed in two sides of the case 1 and are respectively used as an air inlet and an air outlet of the heat dissipation area, and an independent air channel is formed in the area between the air inlet and the air outlet. The mounting area is used for mounting devices such as a circuit board, a fan and the like or for fixing a heat dissipation device. In this embodiment, the name of the partition board 2 is that the partition board 2 divides the chassis into two regions with different functions, and actually, the partition board 2 may be a partition board separately embedded in the chassis, or a top board integrated with the chassis, which are all within the protection scope of the present application. Preferably, the partition plate 2 and the cabinet 1 are of an integrated structure.
The capacitor assembly 31 is mounted on the back of the first circuit board 3, and in this embodiment, the capacitor assembly 31 includes 4 capacitors, and the 4 capacitors are sequentially fixed on the back of the first circuit board 3. This application does not restrict the electric capacity quantity that the electric capacity subassembly contains, if install the electric capacity of different quantity based on this scheme, also is in this application's protection scope. The first circuit board 3 is used to provide a capacitance circuit, and in an actual application scenario, the first circuit board 3 may also provide a circuit of a frequency converter driving signal, which is not limited in this application. The heat dissipation assembly 4 is disposed within the heat dissipation region. The heat dissipation assembly 4 may be fixed to the partition plate 2 or the side wall of the cabinet 1 via screws.
Through holes 21 for the capacitor assembly 31 to pass through are formed in the partition plate 2, the number of the through holes is equal to that of the capacitors, the sizes of the through holes correspond to the capacitors one by one, and sealing ribs 22 are arranged on the edges of the through holes 21 on one side of the mounting area on the partition plate. When the first circuit board 3 is mounted to the chassis 1, the capacitor module 31 extends into the heat dissipation area through the through hole 21 of the partition plate 2 until the sealing rib 22 at the edge of the through hole is tightly attached to the back of the first circuit board 3, and is fixed to the partition plate by the first circuit board fixing screw 32. So set up, most electric capacity main part of electric capacity subassembly 31 is located the radiating area, and its radiating efficiency is higher to, seal rib 22 on the division board and the back interference fit of first circuit board 3 and lock by first circuit board set screw 32, make the electric capacity through-hole seal, possess good dustproof effect.
In an improved embodiment, the frequency converter further comprises a short-circuit metal strip for connecting the reactor. Referring to fig. 3 to 4, fig. 3 is a schematic position diagram of a frequency converter with an independent air channel where a short-circuit metal strip is installed according to an embodiment of the present application; fig. 4 is a schematic structural diagram of a part where a frequency converter with an independent air duct is installed and shorted with a metal strip according to an embodiment of the present application.
Be equipped with the through-hole on the short circuit metal strip 231, division board 2 is equipped with limit structure 233 and the through-hole 232 that corresponds with short circuit metal strip 231, is equipped with closed rib 234 at limit structure 233 inner wall, and short circuit metal strip 231 leans on the bolt cooperation of the moulded case rib of heat dissipation area one side and division board 2 by installation area one side to be fixed in limit structure 233 via division board 2.
In this embodiment, the through hole 232 is used to fix a connection stud of the reactor when the reactor is connected. Under for the condition of inserting the reactor, short circuit metal strip 231 seals through-hole 232, can play dustproof effect to, limit structure 233 is convenient for short circuit metal strip 231's positioning of assembling, also can prevent that it from attaching the rotation when fixed simultaneously. Under the condition that the reactor is connected, the wiring stud 231' of the reactor penetrates through the through hole 232, fills the through hole 232 and plays a dustproof role.
In an improved embodiment, the frequency converter further comprises an extension through hole for accessing the adapter circuit board. Referring to fig. 5 to 6, fig. 5 is a schematic structural diagram of a mounted adapter circuit board of a frequency converter with an independent air duct according to an embodiment of the present application; fig. 6 is a schematic structural diagram of a converter with independent air ducts without an adapter circuit board according to an embodiment of the present application.
The partition plate 2 is provided with an extension through hole 241 for accessing the adapting circuit board. One side of the partition plate 2 in the mounting region is provided with a dustproof material 242 (such as a dustproof sponge), and the dustproof material 242 is attached to the partition plate 2 and covers the expansion through hole 241. As shown in fig. 5, in a case where the adapting circuit board is not mounted, the dustproof material 242 seals the extended through hole 241, so as to achieve a dustproof effect; as shown in fig. 6, in the case of mounting the relay circuit board, the connection terminal 243 of the relay circuit board passes through and fills the extended through-hole 241, achieving a dustproof effect.
In a further improved embodiment, the frequency converter further comprises a second circuit board for generating the drive signal. Referring to fig. 7, fig. 7 is a schematic structural diagram of a frequency converter with an independent air channel and a second driving board installed thereon according to an embodiment of the present application.
The shape of the second circuit board 5 is matched with the shape of the back plate of the case 1 on the side of the partition board 2 opposite to the installation area; the second circuit board 5 is installed parallel to the partition board 2, and the distance between the edge of the second circuit board 5 and the corresponding side wall of the case 1 is within a preset interval. Preferably, the preset interval of the external dimension of the second circuit board 5 and the assembly gap of the chassis is 0.5 to 1mm. The vertical distance between the top end of the side wall of the case 1 and the second circuit board 5 is larger than a preset threshold value, namely, the outer edge of the case is heightened to be overlapped. So set up, guarantee under the drive plate edge accords with the ann rule requirement, can very effectively prevent the drive plate back deposition problem.
In an improved embodiment, the frequency converter further comprises a fan interface. Referring to fig. 8-10, fig. 8 is a schematic diagram illustrating a position of a fan interface of a frequency converter with an independent air channel according to an embodiment of the present disclosure; FIG. 9 is a schematic structural diagram of a fan outlet portion of a frequency converter with an independent air channel according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a second driving board of a frequency converter with an independent air duct according to an embodiment of the present application.
As shown in fig. 9, the fan connector includes a frame 252 disposed at an edge of the fan connector, a fan connection terminal 251 disposed in the fan connector, and a sealing rib 253 disposed at a top of the frame.
It should be noted that, for the fan interface, a corresponding structure is required to be disposed on the cover plate, as shown in fig. 10, the second circuit board for generating the driving signal is used as the cover plate, and a fan interface matching structure 51 corresponding to the size and the position of the fan interface is disposed on the cover plate.
In the prior art, the fan of converter usually adopts the connected mode of patch cord, and the dustproof solution of fan interface adopts the white glue of point to seal the interface, and this solution has following shortcoming: (1) The assembly process is added, so that the labor and material costs are increased; (2) The fan interface seals white glue, not only increases the operation difficulty, and some because the hole is big, the shutoff difficulty, glue flows down easily, and the operation degree of difficulty is high. In this embodiment, the fan plug (i.e., the fan connection terminal 251 in fig. 9) is directly exposed by using a soldering type interface, where the previous patch cord connection manner is changed. The method that this embodiment adopted both was convenient for product maintenance, can save the cost moreover to, fan interface is equipped with the frame that encloses all around, encloses frame top design and seals the rib, seals the rib and covers apron (or circuit board) interference fit on the division board and seals the trompil, reaches dustproof effect.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The frequency converter with the independent air duct provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. A frequency converter with an independent air channel is characterized by comprising a case, a heat dissipation assembly, a capacitor assembly and a first circuit board;
a partition plate is arranged in the case and divides the case into a heat dissipation area and a mounting area;
the heat dissipation assembly is arranged in the heat dissipation area;
the first circuit board is arranged in the mounting area and fixed on the partition plate;
the capacitor assembly comprises at least one capacitor, and the at least one capacitor is mounted on the back surface of the first circuit board, penetrates through the partition plate through a through hole in the partition plate and is arranged in the heat dissipation area;
the number of the through holes in the partition plate is equal to that of the capacitors penetrating through the partition plate by the capacitor assembly, and the sizes of the through holes in the partition plate are matched with the capacitors penetrating through the partition plate by the capacitor assembly one by one;
the edge of the through hole on the partition plate on one side of the mounting area is provided with a sealing rib, and the back surface of the first circuit board is attached to the sealing rib.
2. The frequency converter according to claim 1, further comprising a short-circuit metal strip for accessing the reactor, wherein the short-circuit metal strip is provided with a through hole;
the partition plate is provided with a limiting structure and a through hole which correspond to the short-circuit metal strip;
the short-circuit metal strip is matched and fixed on the limiting structure through a plastic shell rib at one side of the partition plate close to the heat dissipation area and a screw at one side of the partition plate close to the installation area.
3. The frequency converter according to claim 2, wherein the inner wall of the limit structure is provided with a dustproof material.
4. The frequency converter according to claim 1, wherein the partition plate is provided with an extension through hole for accessing the adapter circuit board, and a dustproof material is provided on one side of the partition plate in the mounting area, and is attached to the partition plate and covers the extension through hole.
5. The frequency converter of claim 1, further comprising a transition circuit board;
the partition plate is provided with an expansion through hole for accessing the switching circuit board;
the adapter circuit board terminal penetrates through and fills the expansion through hole, so that the adapter circuit board is fixed on the partition plate.
6. The frequency converter of claim 1, further comprising a second circuit board for generating a drive signal, the second circuit board disposed within the mounting area.
7. The frequency converter according to claim 6, wherein the shape of the second circuit board matches the shape of the chassis back plate on the side of the partition plate facing the mounting area;
the second circuit board is installed in parallel to the partition board, and the distance between the edge of the second circuit board and the corresponding side wall of the case is located in a preset interval.
8. The frequency converter according to claim 7, wherein a vertical distance between a top end of a side wall of the cabinet and the second circuit board is greater than a preset threshold.
9. The frequency converter according to claim 1, wherein a fan port is provided on the partition plate, and the fan port is used for positioning a fan connection terminal.
10. The frequency converter according to claim 9, wherein the fan interface edge is provided with a surrounding frame, and the top of the surrounding frame is provided with a sealing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662555.9U CN218868084U (en) | 2022-06-30 | 2022-06-30 | Frequency converter with independent air channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662555.9U CN218868084U (en) | 2022-06-30 | 2022-06-30 | Frequency converter with independent air channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218868084U true CN218868084U (en) | 2023-04-14 |
Family
ID=87371370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221662555.9U Active CN218868084U (en) | 2022-06-30 | 2022-06-30 | Frequency converter with independent air channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218868084U (en) |
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2022
- 2022-06-30 CN CN202221662555.9U patent/CN218868084U/en active Active
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