CN202889166U - Frequency converter - Google Patents
Frequency converter Download PDFInfo
- Publication number
- CN202889166U CN202889166U CN 201220363699 CN201220363699U CN202889166U CN 202889166 U CN202889166 U CN 202889166U CN 201220363699 CN201220363699 CN 201220363699 CN 201220363699 U CN201220363699 U CN 201220363699U CN 202889166 U CN202889166 U CN 202889166U
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- frequency converter
- cabinet
- blade
- blower fan
- air
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model provides a frequency converter. The frequency converter includes a cabinet (50). The frequency converter also includes an air inlet (60) arranged in the cabinet; an air outlet (70) arranged on the cabinet (50); a fan (40) that is arranged on the cabinet (50) and capable of suctioning air outside the cabinet (50) into the cabinet (50) through the air inlet (60) in the cabinet and discharging air in the cabinet (50) out of the cabinet (50) through the air outlet (70); and dustproof devices arranged in the air inlet and the air outlet respectively. The dustproof devices are of an enclosed structure when the fan (40) is not working and single-direction channels can be formed in the dustproof devices respectively when the fan (40) is working. Therefore, when the frequency converter halts, the fan stops and the dustproof devices are enclosed automatically, so that possibilities that dust, steam and the like in the external enter into the frequency converter are reduced. And when the fan is working, air is driven to pass through the air channels arranged in the cabinet, so that a cooling effect of the frequency converter is realized.
Description
Technical field
The utility model relates to a kind of frequency converter, relates in particular to a kind of middle high-pressure frequency converter.
Background technology
Existing frequency converter dispels the heat in cabinet indoor design air channel usually.Have air inlet and air outlet on the general cabinet of frequency converter, from the air inlet air amount, discharge from air outlet behind the heat that element distributes in the absorption frequency converter.Utilize Duct design, help the heater element heat radiation in the frequency converter cabinet.
But the operational environment of frequency converter is generally more abominable, as there was dampness in the air, and with serious pollution area and application scenario, such as the colliery, thermal power generation, water treatment etc.Contain through moisture conductive particle or corrosive gas in the air, easily cause electric component and circuit board damage in the frequency converter, cause the frequency converter lost of life, increase frequency converter failure.
The utility model content
The purpose of this utility model provides a kind of frequency converter, can reduce at lower cost extraneous dust, aqueous vapor etc. and enter its inner possibility.
The utility model provides a kind of frequency converter, and described frequency converter comprises a cabinet, also comprises:
Be arranged on air inlet and the fan outlet that arranges on the described cabinet on the described cabinet;
One is arranged on the blower fan on the described cabinet, and described blower fan can pass through in the described cabinet of air intake of described air inlet with described cabinet outside, and the air in the described cabinet is expelled to outside the cabinet from described air outlet; With
Be separately positioned on the dust guard at described air inlet place and described air outlet place, described dust guard is a closing structure when described blower fan quits work, and can form a half-duplex channel when described blower fan work.
Like this, when frequency converter was shut down, blower fan was static; and the dust guard Natural closure has reduced the possibility that extraneous dust, aqueous vapor etc. enter frequency converter inside, and when blower fan is worked; can form again one for the passage of circulation of air, not affect the cooling effect of frequency converter.
In a kind of embodiment of the present utility model, when described dust guard quits work at described blower fan, rely on himself gravity to form a closing structure.That is to say that when frequency converter is shut down, blower fan is static, cabinet internal and external pressure balance, dust guard only need just can realize closure under Action of Gravity Field.
In an embodiment of the present utility model, described dust guard comprises the blade that a slice at least can swing, when described blade quits work at described blower fan, rely on himself gravity to form a closing structure, when described blower fan work, thereby described blade can form a half-duplex channel at the effect lower swing of described air.The dust guard cost of blade construction is comparatively cheap, and processing is processed easily.
Preferably, described dust guard comprises one group of blade, and when described blower fan quit work, described blade overlapped successively and forms a closing structure.If dust guard only arranges a blade, if then blade will form a half-duplex channel when blower fan is worked, then frequency converter inside need reserve corresponding space, and power of fan also wants corresponding increase, so that the pressure reduction that is enough to overcome blade gravity to be provided.If comprise one group of blade, when blower fan quits work, closeness between the blade of overlap joint is larger mutually, and easier formation is the structure of closure comparatively speaking, has reduced further extraneous dust enters frequency converter inside when the frequency converter blower fan quits work possibility.
In a kind of embodiment of the present utility model, described blade can be around a horizontal rotational shaft.Like this, when fan starting, produce certain suction or tension force in cabinet, the cabinet inside and outside differential pressure increases, and overcomes the critical point that blade is conducted oneself with dignity when reaching, leaf natural meeting Unscrew, thus formation is for the passage of circulation of air.
In a kind of embodiment of the present utility model, described frequency converter has a locating part, the maximum angle that described locating part can limit described blade when opening.In order to guarantee the complete machine heat radiation, the wind that the common hope in cabinet inside sucks enters according to the angle of Duct design demand, and this angle can be any one angle during 0 degree is spent to 180.After air inlet added dust guard, angle is spacing, and will to control the angle that blade opens be fixed angle, forms the stable wind path that enters according to angle in cabinet.
In a kind of embodiment of the present utility model, described locating part is a spacing steel wire, and described spacing steel wire one end is fixed on the described cabinet, and the other end is fixed on the described blade.Especially, steel wire length can according to the requirement of frequency changer and wind path, be adjusted the length of spacing steel wire according to the angular adjustment of demand, just can adjust angle control, can guarantee that air intake enters cabinet according to the angle of demand, improves heat dispersion.
In another embodiment of the present utility model, described locating part is a spacing draw-in groove, and described blade can rotate in described spacing draw-in groove.Arrange like this, also can reach similar purpose, so that the angle that blade is opened may be controlled to a fixed angle.
In another embodiment of the present utility model, described dust guard comprises an installation frame and is arranged on swingably blade on the described installation frame that described installation frame is removably disposed on the described cabinet.So, dust guard just can be processed easily, thereby according to the difference of air inlet or air outlet, it is faced different directions be arranged on the frequency converter cabinet, has improved the easy replaceability of this device.And, blade and installation frame are arranged as a whole, just can be installed on the cabinet with bolt, install more conveniently, and safeguard easily.
Frequency converter provided by the utility model, at inlet and outlet unidirectional blade air inlet/outlet structure is installed, is in the Natural closure state when not working, form the space of sealing, can improve with lower cost the dirt exclusion capabilities of medium-high voltage frequency converter complete machine, favourable components and parts life-time dilatation.
Description of drawings
Hereinafter will also come by reference to the accompanying drawings the above-mentioned characteristic of the utility model, technical characterictic, advantage and implementation thereof are further described by description of a preferred embodiment in clear and definite understandable mode, wherein:
Fig. 1 is the schematic diagram of a kind of frequency converter embodiment of providing of the utility model;
Fig. 2 is the schematic diagram of another frequency converter embodiment of providing of the utility model;
Fig. 3 is the schematic diagram of the dust guard among a kind of frequency converter embodiment of providing of the utility model, and this dust guard has formed a half-duplex channel among the figure;
Fig. 4 is dust guard shown in Figure 3 schematic diagram when closed;
Fig. 5 is the partial schematic diagram of the dust guard among a kind of frequency converter embodiment of providing of the utility model.
Label declaration:
100 frequency converters
10,20 dust guards
12 blades
14 installation frames
40 blower fans
50 cabinets
60 air inlets
70 fan outlets
80 spacing steel wires
90 air
Embodiment
Understand for technical characterictic, purpose and effect to utility model have more clearly, now contrast description of drawings embodiment of the present utility model, identical label represents identical part in each figure.
In the utility model, " prevent dust " is not to mean that the impurity such as extraneous dust can not enter frequency converter inside fully, frequency converter in just showing compared to prior art, frequency converter provided by the utility model can reduce the possibility that extraneous dust, aqueous vapor enter frequency converter inside, and, dustproof also and only do not mean that for airborne dust other impurity of frequency-charger cabinet external body, such as aqueous vapor, stone etc., in also being encompassed in.And " closure " do not mean that fully sealing yet, be exposed to outer scheme in just showing compared to prior art fully, the dust guard of frequency converter provided by the utility model, can be when the frequency converter blower fan quits work, frequency converter is inner and external environment is kept apart as much as possible, thereby so that extraneous dust can not have no not enter frequency converter inside such as prior art with stopping.
Also the position of air inlet and air outlet can be exchanged, namely, lower in working order, when the frequency converter cabinet is vertically placed, air inlet is higher with respect to the position of air outlet, under the effect of blower fan, then air-flow was inhaled into, flows through the air channel and need dispel the heat with dustproof transducer inside from air inlet from the cabinet outside parts generation heat exchange discharges from the air outlet that is positioned at the bottom.But this kind scheme need to be adjusted the position of air inlet and the air outlet of frequency converter, correspondingly, also need at air inlet and air outlet blower fan to be set all simultaneously, otherwise, the hot-air that density is lighter can naturally and understandably rise, and can not drop to the air outlet of bottom, so, the frequency converter holistic cost just can increase to some extent.
A kind of embodiment of the present utility model provides a kind of frequency converter, and frequency converter has generally comprised transformer, power cell, control system, line terminal etc.Transformer, power cell, control system, line terminal are combined in the high voltage converter.This frequency converter 100 as shown in Figure 1 is comprised of two cabinets 50, and transformer longitudinal is to being installed on one of them independently in the cabinet; Power cell is installed in another independent cabinet of cabinet; Control system and line terminal are installed on the right side of transformer cabinet.
In the embodiment of the utility model frequency converter, this frequency converter 100 also comprises:
Be arranged on the air inlet 60 on the cabinet 50 and cabinet 50 fan air outlets 70 are set, certainly, many places air inlet and air outlet can be set, such as illustrated in figures 1 and 2, both sides all arrange air inlet 60 before and after cabinet 50 bottoms, both sides all set out air port 70 before and after cabinet 50 tops, can increase like this effect of heat radiation;
Also comprise the blower fan 40 that is arranged on the cabinet 50, blower fan 40 can be drawn in the cabinet 50 by the air 90 of air inlet 60 with cabinet 50 outsides, because the cabinet internal temperature is higher, air 90 temperature that are drawn in the cabinet 50 also can raise, air 90 after the intensification is because density is lower, can naturally and understandably rise, like this, blower fan 40 again can be with the air 90 in the cabinet 50 outside air outlet 70 be expelled to cabinet 50, certainly, in order to increase the effect of heat radiation, as shown in Figure 1, can multi-section cooling blower 40 be set at cabinet 50; With
Be separately positioned on the dust guard (10,20) at air inlet 60 places and air outlet 70 places, dust guard (10,20) is closed when blower fan 40 quits work, and then can form a half-duplex channel when blower fan 40 work, for air 90 circulations.
Like this, when frequency converter was shut down, blower fan was static; and the dust guard Natural closure has reduced the possibility that extraneous dust, aqueous vapor etc. enter frequency converter inside, and when blower fan is worked; can form again one for the passage of circulation of air, not affect the cooling effect of frequency converter.
Specific to dust guard, in an embodiment of the present utility model, when dust guard quits work at described blower fan, rely on himself gravity to form a closing structure.That is to say that when frequency converter is shut down, blower fan is static, cabinet internal and external pressure balance, dust guard only need just can realize closure under Action of Gravity Field.
And in an embodiment of the present utility model, described dust guard comprises the blade that a slice at least can swing, when blade quits work at blower fan, rely on himself gravity to form a closing structure, when described blower fan work, thereby described blade can form a half-duplex channel at the effect lower swing of described air.The dust guard cost of blade construction is comparatively cheap, and processing is processed easily.
Because the frequency converter assembling is at the top and adopt the air draught mode, so, when the fan operation of frequency converter, the pressure that bears in the cabinet is negative pressure, malleation and bear the cabinet outside, causing and locating wind direction at air inlet (frequency converter bottom) is toward the cabinet internal flow, pressure differential so that leaf natural open.At the fan outlet place (frequency converter tip position), rely on fan operation that the blade of air outlet is blown open.When the frequency converter blower fan was out of service, blade relied on gravity can realize closing inlet and outlet, realized dustproof.
In an embodiment of the present utility model, as shown in Figure 3, miscellaneous part is constant, and dust guard 10 comprises one group of blade 12, and when blower fan quit work, as shown in Figure 4, these blades overlapped successively and form a closing structure.
If dust guard only arranges a blade, if then blade will form a half-duplex channel when blower fan is worked, then frequency converter inside need reserve corresponding space, can under differential pressure action, be received in cabinet with the blade after the convenient inclination, and power of fan is also wanted corresponding increase, so that the pressure reduction that is enough to overcome blade gravity to be provided.If comprise one group of blade, when blower fan quit work, the closeness between the blade of overlap joint was larger mutually, and easier formation is the structure of closure comparatively speaking, and frequency converter cabinet inner space also need not to carry out larger variation.
In a kind of embodiment of the present utility model, miscellaneous part is constant, and blade can be around a horizontal rotational shaft.Like this, when fan starting, produce certain suction or tension force in cabinet, the cabinet inside and outside differential pressure increases, and overcomes the critical point that blade is conducted oneself with dignity when reaching, leaf natural meeting Unscrew, thus formation is for the passage of circulation of air.
In a kind of embodiment of the present utility model, miscellaneous part is constant, and frequency converter also has a locating part extraly, but the maximum angle when such locating part limit blade is opened.In order to guarantee the complete machine heat radiation, cabinet is inner wishes that usually the wind that sucks enters from the angle according to the Duct design demand.After air inlet added dust guard, angle is spacing, and will to control the angle that blade opens be fixed angle, forms the stable wind path that enters by required angle in cabinet.
Particularly, as shown in Figure 5, can be set to a spacing steel wire 80 by locating part, spacing steel wire one end of this root is fixed on the cabinet 50, and the other end is fixed on the blade 12.Take the dust guard that is arranged on the air inlet place as example, when the frequency converter blower fan is worked, having certain suction F acts on the blade 12, and blade 12 itself also has certain gravity G, when spacing steel wire 80 imposes on pulling force P on the blade 12 when being not less than making a concerted effort of suction F and gravity G, blade just can be on the fixing angle, and extraneous air just can be sucked in the cabinet according to this angle.According to the requirement of frequency changer and wind path, adjust the length of spacing steel wire, just can adjust angle control, can guarantee that air intake enters cabinet according to the angle of demand, improve heat dispersion.
Certainly, also can be set to a spacing draw-in groove by locating part, and blade just can rotate in spacing draw-in groove.Arrange like this, also can reach similar purpose, so that the angle that blade is opened may be controlled to a fixed angle.
Certainly, can also arrange definitely blade itself, such as producing fixing blade shape with injection moulding process, so that blade just can be resisted against on the cabinet when turning to certain angle, can't rotate further, the angle that so also blade can be opened is controlled on the certain angle.
And in order to make things convenient for installation and maintenance, in another embodiment of the present utility model, as shown in Figure 3 and Figure 4, dust guard comprises an installation frame 14 and is arranged on swingably blade 12 on the installation frame 14, then installation frame is removably disposed on the described cabinet.So, dust guard just can be processed easily, thereby according to the difference of air inlet or air outlet, it is faced different directions be arranged on the frequency converter cabinet, has improved the easy replaceability of this device.And, blade and installation frame are arranged as a whole, just can be installed on the cabinet with bolt, install more conveniently, and safeguard easily.
In this application, air inlet is arranged on the bottom of cabinet, and fan outlet is arranged on the top of cabinet, is understandable that, position herein only is comparatively speaking, and can directly use air inlet on the cabinet and the air outlet of cabinet blower fan.
In this article, " schematically " expression " is served as example, example or explanation ", any diagram, the execution mode that is described in this article " schematically " should be interpreted as a kind of preferred or have more the technical scheme of advantage.
Above listed a series of detailed description only is specifying for feasibility embodiment of the present utility model; they are not to limit protection range of the present utility model, allly do not break away from equivalent embodiment or the change that the utility model skill spirit does and all should be included within the protection range of the present utility model.
Claims (10)
1. frequency converter, described frequency converter comprises a cabinet (50), it is characterized in that, also comprises:
Be arranged on the air inlet (60) on the described cabinet (50) and fan outlet (70) on the described cabinet (50) is set;
One is arranged on the blower fan (40) on the described cabinet (50), described blower fan (40) can suck in the described cabinet (50) by described air inlet (60) air (90) that described cabinet (50) is outside, and the air (90) that described cabinet (50) is interior is outside described air outlet (70) is expelled to cabinet (50); With
Be separately positioned on described air inlet (60) and locate the dust guard located with described air outlet (70), described dust guard is a closing structure when quitting work at described blower fan (40), can form a half-duplex channel when described blower fan (40) is worked.
2. frequency converter as claimed in claim 1 is characterized in that, described dust guard is at described blower fan (40) when quitting work, and relies on himself gravity to form a closing structure.
3. frequency converter as claimed in claim 2, it is characterized in that, described dust guard comprises the blade (12) that a slice at least can swing, described blade (12) is at described blower fan (40) when quitting work, rely on himself gravity to form a closing structure, when described blower fan (40) is worked, described blade (12) can be at described air (90) thus the effect lower swing form a half-duplex channel.
4. frequency converter as claimed in claim 3 is characterized in that, described dust guard comprises one group of blade (12), and when quitting work, described blade (12) overlaps successively and forms a closing structure at described blower fan (40).
5. frequency converter as claimed in claim 3 is characterized in that, described blade (12) can be around a horizontal rotational shaft.
6. frequency converter as claimed in claim 3 is characterized in that, described frequency converter has a locating part, and described locating part can limit the maximum angle of described blade (12) when opening.
7. frequency converter as claimed in claim 6 is characterized in that, described locating part is a spacing steel wire (80), and described spacing steel wire (80) one ends are fixed on the described cabinet (50), and the other end is fixed on the described blade (12).
8. frequency converter as claimed in claim 6 is characterized in that, described locating part is a spacing draw-in groove, and described blade (12) can rotate in described spacing draw-in groove.
9. frequency converter as claimed in claim 3, it is characterized in that, described dust guard comprises an installation frame (14) and is arranged on swingably blade (12) on the described installation frame (14) that described installation frame (14) is removably disposed on the described cabinet (50).
10. frequency converter as claimed in claim 1 is characterized in that, described frequency converter is medium voltage frequency converter or high voltage converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363699 CN202889166U (en) | 2012-07-25 | 2012-07-25 | Frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363699 CN202889166U (en) | 2012-07-25 | 2012-07-25 | Frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889166U true CN202889166U (en) | 2013-04-17 |
Family
ID=48080553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220363699 Expired - Lifetime CN202889166U (en) | 2012-07-25 | 2012-07-25 | Frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202889166U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831437A (en) * | 2014-02-28 | 2014-06-04 | 张家港振江粉末冶金制品有限公司 | Powder metallurgy sintering furnace |
| CN104467366A (en) * | 2014-12-19 | 2015-03-25 | 苏州翊宣电子有限公司 | Dustproof power supply module |
| CN104659693A (en) * | 2013-11-18 | 2015-05-27 | 施耐德电器工业公司 | Heat regulation of a compartment in a port electrical power supply substation |
| CN110401128A (en) * | 2019-06-26 | 2019-11-01 | 桐城市畅润电力工程有限公司 | A kind of radiator of power equipment case |
-
2012
- 2012-07-25 CN CN 201220363699 patent/CN202889166U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659693A (en) * | 2013-11-18 | 2015-05-27 | 施耐德电器工业公司 | Heat regulation of a compartment in a port electrical power supply substation |
| CN103831437A (en) * | 2014-02-28 | 2014-06-04 | 张家港振江粉末冶金制品有限公司 | Powder metallurgy sintering furnace |
| CN104467366A (en) * | 2014-12-19 | 2015-03-25 | 苏州翊宣电子有限公司 | Dustproof power supply module |
| CN110401128A (en) * | 2019-06-26 | 2019-11-01 | 桐城市畅润电力工程有限公司 | A kind of radiator of power equipment case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |