CN207664855U - Frequency-converter device - Google Patents

Abstract

A kind of frequency-converter device, the frequency-converter device include the frequency converter (4 being mounted in cabinet；36), and the cabinet includes the side wall to oppose and the rear wall (2 extended between the side walls；32).The cabinet further includes midfeather (3 that is being separated with rear wall and being arranged essentially parallel to the rear wall stretching, extension；31), wherein in the midfeather (3；31), the rear wall (2；32) it is provided with the cooling duct of the cabinet between the side wall, at the cooling duct, air intake (5) is provided in the low portion of cabinet and is provided with air outlet slit (6) in the upper part of cabinet.Frequency converter (4；36) fan (11 for including internal cooling duct (7) and being connect with internal cooling duct；37), wherein frequency converter is arranged in cabinet so that the cooling duct of the inside of frequency converter and the cooling duct of cabinet constitute common channel, and the fan (11 of frequency converter is provided in the common channel；37) to generate air stream.

Description

Frequency-converter device

Technical field

The utility model is related to a kind of frequency-converter device and more particularly to a kind of frequency converters with channel cooling device Device.

Background technology

Frequency converter is especially mounted in cabinet in many industrial objects, and the cabinet is for example positioned at the engineering place of industrial plants In.In a manner of in cabinet, component associated with the function of frequency converter can be in a simple manner arranged in same cabinet Portion.Originally the frequency converter of encapsulation need not for example have all electric components needed for corresponding application.In cabinet, in addition to Other than frequency converter, the relevant filter part of frequency converter such as output filter can be provided with and different electric instruments is such as kept apart Pass, safety device and contactor.In cabinet, it can be also provided with contactor that is separated, being electrically coupled on frequency converter, it is described to connect Tentaculum is used for entrance wiring and motor wire connection.

As electric equipment, frequency converter needs cooling device, the cooling device to be used to maintain the permitted temperature of electrical components Degree.For the semiconductor of main circuit, there are special cooling requirements, and significant portion of power attenuation occurs in the semiconductor. In by air cooled frequency converter, the power attenuation of frequency converter is imported in cooling fin, the cooling fin is arranged in air stream In.Air is usually imported into cabinet in a manner of being received on the cabinet edge in lower part and is imported into the frequency conversion led inside cabinet In the cooling fin of device and the cabinet is left in continuation export from the top of cabinet.

In general, in order to be used in cooling air in cabinet internal motion, one or more separated fans, the wind are used Fan is arranged in the air intake of cabinet, and is dedicated to the air within cabinet being especially directed to and need on cooling component.So And the embodiment of the cooling device for frequency converter electrical components associated there is not necessarily optimal.

Utility model content

The utility model based on the following objects, researches and develops a kind of frequency-converter device, it can be solved by means of the frequency-converter device The certainly above problem.The purpose of this utility model realizes that the frequency-converter device includes being mounted on by means of a kind of frequency-converter device Frequency converter in cabinet, and the cabinet includes the side wall to oppose and the rear wall extended between the side walls, which is characterized in that The cabinet further includes midfeather that is being separated with the rear wall and being arranged essentially parallel to the rear wall stretching, extension, wherein in the centre The cooling duct of the cabinet is provided between wall, the rear wall and the side wall, at the cooling duct, under the cabinet It is provided with air intake in portion part and is provided with air outlet slit in the upper part of the cabinet, and the frequency converter includes interior The cooling duct in portion and the fan being connect with internal cooling duct, wherein the frequency converter is arranged in the cabinet so that institute The cooling duct of the cooling duct and the cabinet of stating the inside of frequency converter constitutes common channel, is arranged in the channel The fan of frequency converter is stated to generate air stream.The preferred embodiment of the utility model is described below.

The utility model is based on, and being constituted in the rear portion of cabinet has cooling duct, and the cooling duct is partly by setting The frequency converter set in the channel is constituted.In a manner of being installed in channel, the fan of the inside of frequency converter constitutes the air in channel Stream, and other electrical components of setting in the channel can be also cooled down by the air stream.Frequency converter itself includes channel, described There are the cooling fins of power semiconductor in channel.Frequency converter is arranged in the channel so that the channel in the rear portion of cabinet and change The channel of the inside of frequency device constitutes the continuous path for cooling air.

One advantage of device according to the present utility model is the fan that the cooling duct constituted need not separate.Become The fan of the inside of frequency device generates the required air stream entered in channel.Other portions can also be set in the channel constituted Part, the component need to cool down, such as output filter or throttle valve.The cooling duct being made up of the utility model is located at cabinet In rear portion so that the second cooled region can be provided in the front part of cabinet, the energy at second cooled region It is enough provided with such as lower component, the cooling requirement of the component is smaller.By it is of the utility model, after cabinet In channel in portion part, it can be provided with most hot and need most cooling component, and generate the component energy of less heat Enough it is arranged in the front part of cabinet.The air stream of the air stream in the channel in the rear portion of cabinet and the space of front part Without mixing so that rear portion may be configured as the dirty channel not being filtered to cooling air, and in front part Space in can be provided with more sensitive component, the component needs more clean cooling air.If into the logical of rear portion Air in road is not filtered, then realizing maximum air flow by the fan used.

Description of the drawings

Now, in conjunction with preferred embodiment the utility model is at large illustrated with reference to attached drawing, wherein：

Fig. 1 shows the cross section in principle of an embodiment of device according to the present utility model；

Fig. 2 and 3 shows filtering module；

Fig. 4 shows the cross section of an embodiment of device according to the present utility model；And

Fig. 5 shows the three-dimensional cutaway view of an embodiment of device according to the present utility model.

Specific implementation mode

Fig. 1 shows the cross section of the frequency-converter device in principle of embodiment according to the present utility model.Before cabinet includes Wall or door 1 or rear wall 2.According to the utility model, rear wall 2 extends between the sidewalls.Side wall is invisible in the cross section of Fig. 1. According to the utility model, cabinet includes midfeather 3 that is being separated with rear wall and being arranged essentially parallel to the rear wall stretching, extension.In midfeather 3, the cooling duct for having cabinet is constituted between rear wall 2 and side wall.Be provided at cooling duct in the low portion of cabinet into Enter the opening 5 of air and the opening 6 for the discharge air in the upper part of cabinet.

The frequency converter 4 of device according to the present utility model includes the cooling duct 7 of inside and is connected to the cooling duct The fan 11 at place.Frequency converter is arranged in cabinet so that the cooling duct 7 of the inside of frequency converter and the cooling duct of cabinet are constituted from entering Mouth 5 is until export 6 unified channel.According to the utility model, the fan 11 of frequency converter be provided for generating enter it is logical Air stream in road.

Fig. 1 shows how frequency converter is positioned partially on the front side of midfeather and after how being positioned partially at midfeather On side.Frequency converter is advantageously fixed by flange on midfeather, and wherein the mechanical structure of frequency converter has in the front of frequency converter Flange between part and rear portion.Correspondingly, there is midfeather opening, the rear portion of frequency converter can pass through described open Mouth setting.Flange at frequency converter can realize fixation of the frequency converter on midfeather so that flange is fixed on midfeather As in lower part, the part surrounds the opening of midfeather.The opening of flange and frequency converter the covering midfeather of frequency converter.Method Orchid is located in frequency converter so that --- in a manner of being placed on midfeather --- cooling duct of the inside of frequency converter enters In the region of mouth and outlet between the midfeather and rear wall of cabinet, that is to say, that the cooling duct of the inside of frequency converter enters It is located on the rear side of midfeather in the cooling duct that mouth and outlet are constituted in cabinet.

The example of Fig. 1 shows that frequency converter 4 and the rear wall 2 of cabinet separate.Advantageously, it is substantially all of in the cooling channel The air of flowing flows through the cooling duct of the inside of frequency converter.This can so be realized：Pacify in the upper part of frequency converter Equipped with air guiding device, thus prevent air from the rear portion of frequency converter or from the side flow of frequency converter, and especially prevent Air that is having passed through frequency converter and being heated flows back to below frequency converter.It is clear that this air guiding device can be with Various ways is realized.Furthermore, it is not necessary that separated air guiding device, as long as frequency converter itself prevents air around becoming Frequency device is transferred in cooling duct.

Fig. 1 equally show the output filter being connect with frequency converter how to be partially disposed at cabinet rear wall and midfeather it Between space in, that is to say, that how to be arranged in the cooling duct of cabinet.Filter is fixed on advantageous by flange in centre It is more specifically similar with converter module in the opening constituted on wall.Filter advantageously forms as module, and mode is： The component of filter is fixed on suitable plate, and the plate is covered in the opening constituted on midfeather in mounted state. It is filter or throttle valve to generate heat, induction component setting cooling logical if plate is placed on midfeather In road.On the other side of the board, i.e., on front side, it is provided with connector, frequency converter and load can be coupled on the connector. It onboard can also install and other relevant electrical components of filter and its cooling fin.Electrical components can be arranged on the front side of plate And cooling fin can be arranged on the rear side of plate, wherein the electrical components are located in mounted state in cooling duct.

Fig. 2 and 3 shows an example of filtering module, and the filtering module may be provided at as under shed, the opening It is constituted on midfeather.Fig. 2 and Fig. 3 illustrates the connector of the component side and filtering module of filtering module with perspective cross-sectional respectively Side.Filter is, for example, du/dt filters, is electrically coupled between the output end and load of frequency converter, to limit frequency converter The raising temperature of voltage.Throttle valve 51 can be arranged in the channel of cabinet, because can be subjected to may be unclean for the throttle valve Air and cooling in the air stream generated by the fan of frequency converter.It is arranged again with the relevant electronic instrument of filter On the connector side of plate, wherein it is possible that generating clean air stream for the electronic instrument.Fig. 2 also shows that setting even The cooling fin 52 of the electronic instrument part on device side is connect, the cooling fin is arranged in the component side of plate, that is to say, that is mounted on In the cooling duct of cabinet.As shown in figures 2 and 3, module is made of plate, electronic unit is installed over the plates.Plate Also there is the opening for being fixed on cabinet on midfeather.It is directed toward cabinet in mounted state in the connector side of filtering module Door, connector device 53,54 are electrically coupled to be unappropriated, by module between frequency converter and load.

An advantageous embodiment according to the present utility model is provided with the second cooling for such as lower component in cabinet Channel, the component does not generate big thermal losses and the component may need more clean cooling air.Second cooling Channel is constituted in the front of cabinet, that is to say, that is constituted in the space between midfeather, side wall and antetheca.Fig. 1 passes through arrow 21 show that air stream, the air stream are constituted on the second cooling duct.The entrance 22 of second cooling duct is advantageously located at out 5 top of mouth.Here, described device includes horizontal plate 24, after the bottom 25 and side wall of the plate and cabinet collectively constitute cabinet A part for cooling duct in portion part.In this device, air intake 5,22 is located at the front part and posterior of cabinet In point.

The outlet 23 of second cooling duct is advantageously located on the antetheca of cabinet, that is to say, that it is located on door 1.Fig. 1 is shown How the outlet of cooling duct in rear portion, which passes through, is stretched at the top of cabinet in the extension of cabinet, and is exported cold positioned at second But above the outlet in channel.

The air circulation passing through fan entered in the second cooling duct generates, and it is attached that the fan is advantageously located at entrance 22 Closely.Fan can also be located in another location in the second cooling duct.In the second cooling duct, that is to say, that in centre For example there is electric instruments 15, the electricity instrument to be electrically coupled on the supply side of frequency converter in space between wall, antetheca and side wall. This electricity instrument is for example including contactor, safety device and disconnecting switch.In addition, being also equipped with connection in the second cooling duct Device and switching circuit.Fig. 1 dividually shows how the switching circuit 13 of frequency converter is located in second flow path.Although frequency conversion The switching circuit of device is located inside the mechanical structure of frequency converter, but is constituted on frequency converter for cooling down separating for switching circuit Flow channel.Fig. 1 be also shown in frequency converter such as the fan 14 in lower part, the part is located in the second cooling duct. Fan 14 is used to cool down the part for not needing big cooling power of frequency converter, such as electric with the switch of the function association of frequency converter Road.In Fig. 1, show that the power module 10 being connect with frequency converter, the power module are arranged after cabinet in the corresponding way In flow channel in portion.

The component of second cooling duct does not generate a large amount of heat compared with the component being arranged in the channel at rear portion.In addition, The cooling fin of component or component in the channel at rear portion can be subjected to uncleanly air, and be set in the front part of cabinet At least part for setting the component in front of midfeather needs clean air to ensure the function of component.In order to generate to second Clean cooling air in flow channel, the entrance 22 are equipped with filter, and the filter filters dirt from cooling air Go out.

Elaborate that the side wall of cabinet and rear wall constitute cooling duct together with midfeather referring to Fig.1 before.It is new according to this practicality One embodiment of type, cooling duct are constituted inside the side wall and/or rear wall of cabinet by means of separated component.It is this separated Component can be plate, by means of the plate constitute cooling duct wall portion.In addition to midfeather 3, two of flow channel or three A side can have the plate for constituting wall portion.As hereinbefore shown by as, cooling duct also can be by cabinet wall It constitutes.Cooling duct can also have air guiding device, the air guiding device that can realize and be directed to cooling air On the object that must be cooled.Cooling air can be for example transmitted to throttle part 51 by means of this air guiding device On.Air guiding device can also be used to the flowing of enhancing cooling air in the cooling channel.The horizontal component of cooling duct and Vertical component can be connected by means of air guiding device, and the air guiding device is for example with the shape to arch upward.In other words, water Angle between flat part and vertical component can be constituted in which arch upward by means of air guiding device, wherein the not shape on cooling duct At wedge angle, be rotated up in the sharp corner cooling air.

Fig. 4 shows the cross section of the detail of the frequency-converter device according to embodiment, and is correspondingly shown in FIG. 5 According to the frequency-converter device of embodiment in the stereogram without side wall and in the case of antetheca.Fig. 4 shows 31 He of midfeather Rear wall 32 constitutes cooling duct between the midfeather and rear wall.In Figure 5 rear wall section can by air outlet slit 33 See, and the side wall of cooling duct is made of the plate 34 separated.

Basic thought according to the present utility model, frequency converter 36 are arranged in the opening at midfeather so that are located at Cooling duct on frequency converter constitutes unified cooling duct together with the cooling duct of the rear portion of cabinet.Cooling duct it is cold But the movement of air is generated by the fan 37 of frequency converter.It is also equipped with the component 35 of induction, the component in the cooling channel It is cooled down in the channel by the air stream generated by internal fan.It is also equipped with the cooling fin for component in the cooling channel Or cooling element 38, the cooling element or cooling fin are arranged on the front side of midfeather.The cooling element 39 of frequency converter is to set The mode set in frequency converter 36 or be arranged in the cooling duct of the inside of frequency converter is shown.

Separated electric instrument 41 is provided between midfeather 31 and antetheca 40 or door.Sky between midfeather 31 and antetheca Between be configured to the second cooling duct and be especially structured to the channel of clean air.The air intake of second cooling duct 42 and air outlet slit 43 be equipped with grid and the mechanism such as filtering material of air filtering may be equipped with.Second cooling duct also has The electrical components for not needing big cooling power of frequency converter 36.It is equally learnt from Figure 4 and 5, is located at the cooling duct at rear portion It is guided on the leading edge of cabinet into the air in vertical channel, the structure that --- for example passes through encapsulation --- on the leading edge At horizontal channel, the horizontal channel is converged with vertical channel in the rear portion of cabinet.

It should be noted that having elaborated that following characteristic, the characteristic belong to the utility model by the details of Figure 4 and 5 Or it is complementary for the understanding of the utility model.Before by indicating that rear wall, side wall, antetheca and rear portion elaborate to fill The structure set.These terms should be understood as, is made of door or another structure to be opened to the cabinet wall most typically of front.Side Wall for it with regard to being located on the both sides of antetheca and extending rearwardly towards rear wall, and from coming from the direction of cabinet door, rear wall position In device rear.

It will be apparent to one skilled in the art that the basic imagination of the utility model can be in different modification shapes It is realized in formula.Therefore, the utility model and embodiments thereof are not limited to examples described above.

Claims (10)

1. a kind of frequency-converter device, the frequency-converter device includes the frequency converter (4 being mounted in cabinet；, and the cabinet packet 36) Include the side wall being oppositely arranged and the rear wall extended between the side walls (2；32), which is characterized in that

The cabinet further includes midfeather (3 that is being separated with the rear wall and being arranged essentially parallel to the rear wall stretching, extension；31), wherein In the midfeather (3；31), the rear wall (2；32) cooling duct of the cabinet is provided between the side wall, described At cooling duct, it is provided with air intake (5) in the low portion of the cabinet and is arranged in the upper part of the cabinet free Gas exports (6), and

The frequency converter (4；36) fan (11 for including internal cooling duct (7) and being connect with the cooling duct of the inside； 37), wherein the frequency converter is arranged in the cabinet so that the cooling of the cooling duct of the inside of the frequency converter and the cabinet Channel constitutes common channel, and the fan (11 of the frequency converter is provided in the common channel；37) to generate Air stream.

2. frequency-converter device according to claim 1, which is characterized in that the cooling duct of the cabinet is by least one plate (34) it is constituted together with the midfeather (31), the plate is installed in a manner of being connect with the rear wall or the side wall.

3. frequency-converter device according to claim 1, which is characterized in that the cooling duct of the cabinet is by the rear wall and institute Side wall is stated to constitute together with the midfeather (31).

4. the frequency-converter device according to any one of the claims 1 to 3, which is characterized in that the midfeather has Opening, the opening are provided for accommodating the frequency converter (4).

5. frequency-converter device according to claim 4, which is characterized in that be arranged for the opening (44) into air It is connected in the front part of the cabinet and with the cooling duct of the cabinet in the rear portion of the cabinet.

6. the frequency-converter device according to any one of the claims 1 to 3, which is characterized in that the frequency-converter device Further include：Antetheca (40)；With the second cooling duct, second cooling duct is in the antetheca (40), the side wall and described Midfeather is constituted between (31), wherein the air of the air intake (42) and second cooling duct of second cooling duct Outlet (43) is located on the antetheca of the cabinet.

7. frequency-converter device according to claim 6,

It is characterized in that,

The antetheca (40) is door.

8. frequency-converter device according to claim 6, which is characterized in that the cooling duct of the cabinet is the sky for pollution The cooling duct of gas and the second cooling duct are the cooling ducts for clean air.

9. the frequency-converter device according to any one of the claims 1 to 3, which is characterized in that the midfeather has Second opening, second opening are provided for accommodating filtering module (12), and the filtering module can be with the frequency converter It is electrically coupled.

10. frequency-converter device according to claim 9, which is characterized in that the filtering module includes plate, and the plate is Second opening is covered in the state of installation, wherein the plate includes：Component side is provided with the mistake in the component side Filter the component (51) of the induction of module；And connector side, connector (53,54) is provided on the connector side, it is described Connector is used to the filtering module being electrically coupled to the frequency-converter device, wherein the filtering module is in order to be mounted on It states in the second opening and is set as so that the component side of the plate is located in the cooling duct of the cabinet.