CN211127545U - Redundant fan device of high-voltage frequency converter - Google Patents
Redundant fan device of high-voltage frequency converter Download PDFInfo
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- CN211127545U CN211127545U CN201922325014.1U CN201922325014U CN211127545U CN 211127545 U CN211127545 U CN 211127545U CN 201922325014 U CN201922325014 U CN 201922325014U CN 211127545 U CN211127545 U CN 211127545U
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Abstract
The utility model discloses a redundant fan device of high-voltage inverter, including fan subassembly and wind channel structure, the fan subassembly includes two fans, the wind channel structure includes wind path auto-change over device. The two fans in the fan assembly are mutually standby, and the air path switching device in the air path structure can control the on-off of the two air paths, so that the standby fans are added, the effective work of each fan is ensured, and the high-voltage frequency converter is prevented from stopping running due to the fault of a single fan; when a single fan fails, a worker can dismantle the failed fan to repair the failed fan without influencing the operation of high-voltage frequency converter equipment.
Description
Technical Field
The utility model relates to a power equipment heat dissipation technical field, more specifically relates to a redundant fan device of high-voltage inverter.
Background
As shown in fig. 1, the conventional high-voltage inverter generally adopts air cooling for heat dissipation, the arrangement of the conventional high-voltage inverter fully considers the element heating factor, and the blower in the blower assembly 12 and the high-voltage inverter 11 adopt a locking device, and only when the blower starts the high-voltage inverter 11, the blower can operate. After the high-voltage inverter drives the load to run, if the fan in the fan assembly 12 breaks down suddenly, the operation is stopped, so that the cabinet body of the high-voltage inverter stops running (the power element in the high-voltage inverter stops working) due to overhigh temperature, the load carried by the high-voltage inverter stops due to the stop of the inverter, and the stop running of the load brings great loss to manufacturers.
The common idea is to add a fan to the high voltage inverter for heat dissipation, but the idea is wrong. The same fan is added to normal equipment, and plays no role. As shown in fig. 2, a main fan assembly 22 and a standby fan assembly 23 are arranged on the high-voltage frequency converter 21, fans are installed in the main fan assembly 22 and the standby fan assembly 23, and wind can enter from a failed fan in a short circuit, where wind resistance is small and the distance is short. The high-voltage frequency converter can also stop running due to overheat protection in a short time.
The method comprises the following specific steps: the fan adopts a centrifugal fan, and wind is sucked from the lower part of the fan and blown out from the front side. The normal wind direction of the high-voltage inverter flows (the solid arrow in fig. 2 indicates that the normal wind direction flows) is natural wind or cool wind cooled down by an equipment room, enters the cabinet body of the high-voltage inverter through the air inlet network of the high-voltage inverter, and carries out heat emitted by the internal heating element. If the same fan is added to the high-voltage frequency converter, when the fan at the upper left side in fig. 2, namely the fan in the main fan assembly 22, fails, the operation is stopped. The fault alarm signal of the main fan assembly 22 can be immediately transmitted to the control system of the high-voltage frequency converter, the control system of the high-voltage frequency converter can immediately switch programs, a power supply is provided for the upper right side fan, namely, a fan in the standby fan assembly 23, and the upper right side fan is operated. In the seemingly feasible method, because no proper air path switching structure exists, air can enter from the air outlet of the upper left fan and directly exit from the upper right fan, so that abnormal wind direction flow is caused (the hollow arrow in fig. 2 indicates abnormal wind direction flow), the heating element of the high-voltage frequency converter cannot dissipate heat, and the high-voltage frequency converter can also be stopped due to overheat protection.
Therefore, how to ensure the effective work of each fan while increasing the spare fan is an urgent technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a redundant fan device of high-voltage inverter to after increasing standby fan among the solution prior art, the problem of fan can not effective work.
In order to solve the technical problem, the utility model adopts the following technical scheme: a redundant fan device of a high-voltage frequency converter comprises a fan assembly and an air channel structure, wherein the fan assembly comprises a first shell and two fans positioned in the first shell, the two fans are separated through a partition plate so that the two fans keep relatively independent air channels in the first shell, a fan air inlet is formed in the bottom end of the first shell, and a fan air outlet is formed in the side wall of the first shell; the air channel structure comprises a second shell and an air channel switching device, wherein the first end of the second shell is connected with the air outlet of the fan of the first shell, and the second end of the second shell is provided with an air outlet net; the air path switching device is arranged in the second shell to divide the second shell into two air channels, the two air channels in the second shell are communicated with the two air channels in the first shell, and the on-off of the two air channels can be controlled.
Preferably, the air path switching device comprises a support rod and two air path baffles, the support rod is installed at the first end of the second shell, and the two air path baffles are movably installed on the support rod through a hinge and can rotate around the support rod to realize on-off control of the two air paths; an interlocking piece is arranged between the two air duct baffles so as to ensure that the two air duct baffles are vertical.
Preferably, the support rod is an end surface of the partition plate located at the air outlet of the fan.
Preferably, the support rod is fixed on the end face of the partition plate positioned at the air outlet of the fan.
Preferably, the air path switching device further comprises a limiting stopper, and the limiting stopper and the support rod are located in the same vertical plane to limit the air duct baffle.
Preferably, both sides of the limit stopper are respectively provided with a magnetic suction block to suck the air duct baffle when the air duct baffle reaches the position of the limit stopper.
Preferably, the system further comprises a control device for controlling the operation of the two fans, and a sensor for detecting the operation state of the fans.
Compared with the prior art, the utility model provides a pair of high-voltage inverter's redundant fan device has following advantage: the two fans in the fan assembly are mutually standby, and the air path switching device in the air path structure can control the on-off of the two air paths, so that the standby fans are added, the effective work of each fan is ensured, and the high-voltage frequency converter is prevented from stopping running due to the fault of a single fan; when a single fan fails, a worker can dismantle the failed fan to repair the failed fan without influencing the operation of high-voltage frequency converter equipment.
Drawings
Fig. 1 is a schematic structural diagram of a fan assembly of a conventional high-voltage inverter.
Fig. 2 is a schematic structural diagram of a redundant fan assembly of a conventional high-voltage inverter.
Fig. 3 is the utility model provides a pair of the redundant fan device of high-voltage inverter's structural schematic.
Fig. 4 is a schematic structural diagram of the redundant fan device as viewed from a in fig. 3.
Fig. 5 is a schematic structural diagram of the air duct structure.
Reference numerals:
31-a fan assembly, 32-an air duct structure,
311-a clapboard, 312-a fan inlet,
321-an air outlet net, 322-an air duct,
323-support bar, 324-duct baffle,
325-hinge, 326-interlock,
327-limit stop.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements and techniques of the present invention so that advantages and features of the present invention may be more readily understood when implemented in a suitable environment. The following description is an embodiment of the present invention, and other embodiments related to the claims that are not explicitly described also fall within the scope of the claims.
Fig. 3 and fig. 4 show the structural schematic diagram of a redundant fan device of a high-voltage inverter provided by the present invention, in order to see the internal diagram of the air duct structure clearly, the air outlet net is omitted in fig. 4.
As shown in fig. 3 and 4, the redundant fan device includes a fan assembly 31 and an air duct structure 32, the fan assembly 31 includes a first housing and two fans located in the first housing, and the two fans are separated by a partition 311, so that the two fans keep relatively independent air ducts in the first housing, a fan air inlet 312 is disposed at the bottom end of the first housing, and a fan air outlet is disposed on the side wall of the first housing. The partition 311 may be inserted into the first housing and located between the two fans, so that the two fans are completely separated from each other and located in two completely independent and same air ducts.
The air duct structure 32 includes a second casing and an air duct switching device, a first end of the second casing is connected to the fan outlet of the first casing, and an air outlet net 321 is installed at a second end of the second casing.
The air path switching device is installed in the second casing to divide the second casing into two air channels 322, and the two air channels in the second casing are communicated with the two air channels in the first casing and can control the on-off of the two air channels.
Fig. 5 shows a schematic structural view of the air duct structure.
As shown in fig. 5, the air path switching device includes a support bar 323 and two air duct baffles 324, the support bar 323 is installed at the first end of the second housing, and the two air duct baffles 324 are movably installed on the support bar 323 through a hinge 325 and can rotate around the support bar 323 to control on/off of the two air ducts 322; an interlock 326 is installed between the two air duct baffles 324 to maintain the vertical position between the two air duct baffles 324.
The support bar 323 may be an end surface of the partition 311 at the air outlet of the fan, or may be an independent support member fixed to an end surface of the partition 322 at the air outlet of the fan, and is used to fix the two air duct baffles 324.
The air path switching device further includes a limiting stopper 327, and the limiting stopper 327 and the supporting rod 323 are located in the same vertical plane to limit the air duct baffle 324.
The magnetic blocks are respectively installed on two sides of the limit stopper 326 to suck the air duct baffle 324 when the air duct baffle 324 reaches the position of the limit stopper 326, so that the two fans are used for two independent air ducts, and the short circuit phenomenon of the air is avoided.
The redundant fan device also comprises a control device for controlling the operation of the two fans and a sensor for detecting the operation state of the fans.
The following describes the redundant fan device of the high-voltage frequency converter in detail:
firstly, in the redundant fan device of high-voltage inverter, two fans in the fan subassembly can both satisfy the amount of wind demand of high-voltage inverter alone, the control of two fans is controlled by controlling means, this controlling means is a contactor, can switch over the operating condition of two fans at will, this controlling means is in the signal that can receive the sensor simultaneously, when certain fan trouble is surveyed to the sensor, open another fan, just so can guarantee the normal work of high-voltage inverter, can not be because when a fan breaks down, make whole equipment bring to rest, and cause unnecessary loss.
The redundant fan device comprises a fan assembly and an air duct structure. The air duct structure is located on the front side (fan air outlet side) of the fan assembly. The two fans can be divided into a main fan and a standby fan, the main fan corresponds to a main air duct, the standby fan corresponds to a standby air duct, the main air duct can be cut off by the air duct baffle, and the standby air duct can be cut off by the air duct baffle. When the main fan operates, the main fan is opened, the air can blow the air duct baffle plate 1 open, the air duct baffle plate 1 is blown to the position of the limiting stopper, and the magnetic suction block on the limiting stopper sucks the air duct baffle plate 1. Because the air duct baffle 1 and the air duct baffle 2 are interlocked, the two air duct baffles are in a vertical state, when the air duct baffle 1 is fixed at the position of the limiting stopper, the air duct baffle 2 just seals the standby air duct well, the standby air duct is cut off, the main fan operates, and air flows out from the main air duct. When the main fan breaks down and stops, the fault signal of the fan can be transmitted to the control device. The control device starts the standby fan, the air can blow the air duct baffle 2 away, the air duct baffle 2 is blown to the position of the limiting stopper, the magnetic suction block on the limiting stopper sucks the air duct baffle 2, the air duct baffle 1 just seals the main air duct well, and the air flows out from the standby air duct.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (7)
1. A redundant fan device of a high-voltage frequency converter is characterized by comprising a fan component (31) and an air duct structure (32),
the fan assembly (31) comprises a first shell and two fans positioned in the first shell, the two fans are separated through a partition plate (311) so that the two fans keep relatively independent air channels in the first shell, a fan air inlet (312) is formed in the bottom end of the first shell, and a fan air outlet is formed in the side wall of the first shell;
the air duct structure (32) comprises a second shell and an air duct switching device, the first end of the second shell is connected with the fan air outlet of the first shell, and the second end of the second shell is provided with an air outlet net (321);
the air path switching device is arranged in the second shell to divide the second shell into two air channels (322), the two air channels in the second shell are communicated with the two air channels in the first shell, and the on-off of the two air channels can be controlled.
2. The redundant fan device according to claim 1, wherein the air path switching device comprises a support rod (323) and two air duct baffles (324),
the supporting rod (323) is installed at the first end of the second shell, and the two air duct baffles (324) are movably installed on the supporting rod (323) through hinges (325) and can rotate around the supporting rod (323) to realize on-off control of the two air ducts (322);
an interlocking piece (326) is arranged between the two air duct baffles (324) so as to keep the two air duct baffles (324) vertical.
3. The redundant fan arrangement according to claim 2, characterized in that the support bar (323) is an end face of the diaphragm (311) at the fan air outlet.
4. The redundant fan arrangement according to claim 2, characterized in that the support bar (323) is fixed to the end face of the partition (311) at the fan outlet.
5. The redundant fan device according to claim 2, wherein the air path switching device further comprises a limiting stopper (327), and the limiting stopper (327) and the support bar (323) are located in the same vertical plane to limit the air duct baffle (324).
6. The redundant fan device according to claim 5, wherein magnetic blocks are respectively installed on two sides of the limit stopper (327) to suck the air duct baffle (324) when the air duct baffle (324) reaches the position of the limit stopper (327).
7. The redundant fan device of claim 1, further comprising a control device for controlling operation of both of the fans, and a sensor for detecting an operating condition of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922325014.1U CN211127545U (en) | 2019-12-23 | 2019-12-23 | Redundant fan device of high-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922325014.1U CN211127545U (en) | 2019-12-23 | 2019-12-23 | Redundant fan device of high-voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211127545U true CN211127545U (en) | 2020-07-28 |
Family
ID=71705960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922325014.1U Active CN211127545U (en) | 2019-12-23 | 2019-12-23 | Redundant fan device of high-voltage frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211127545U (en) |
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2019
- 2019-12-23 CN CN201922325014.1U patent/CN211127545U/en active Active
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