CN211405842U - Frequency converter - Google Patents

Abstract

The utility model discloses a frequency converter, which comprises a casing, a supporting member, a driving board, a capacitor module and a heat dissipation component. The bracket of the supporting member divides the casing into a circuit space and a heat dissipation space. The board is arranged in the circuit space, the capacitor and the heat dissipation component of the capacitor module are arranged in the heat dissipation space, and the heat dissipation component is used to dissipate the heat of the brake tube and the rectifier bridge at the same time. The frequency converter changes the space layout of the traditional frequency converter. It improves the space utilization rate and has a good heat dissipation effect, and the working environment of each device is good. It reduces the space occupation and does not bring new problems. The space inside the casing is divided into different sections. The heat of the devices that generate more heat can be taken away by the heat dissipation components in the heat dissipation space. The drive board and electric heating board that have high requirements for the working environment are well protected in the circuit space. protection, the inverter is compact, reasonable and reliable.

Description

Inverter

technical field

The utility model relates to the field of frequency conversion control, in particular to a frequency converter.

Background technique

Due to the unreasonable internal structure design of many inverters on the market at present, the layout is often neglected. For example, in order to make the inverter have better heat dissipation, the distance between different components is increased, which makes the whole machine structure huge and wastes a lot of space. In some designs, on the contrary, in order to save space, the internal devices are set to be compact, which often leads to poor heat dissipation of the inverter and affects normal work; and once the structure is compact, the requirements of the use environment of each device cannot be taken into account. Therefore, when the space for use is small, the existing frequency converter cannot meet the demand.

SUMMARY OF THE INVENTION

In order to solve the problem of low space utilization rate of the frequency converter in the prior art, the purpose of the utility model is to provide a frequency converter with a reasonable layout.

In order to achieve one of the purposes of the above utility model, an embodiment of the present utility model provides a frequency converter, including:

a housing, the interior of which encloses an installation space with an opening;

a support, comprising a bottom plate and a bracket that are perpendicular to each other, the bracket is inserted into the installation space along the opening and divided into a circuit space and a heat dissipation space, the bottom plate covers the opening and is fixedly connected with the housing, The bracket includes a heat dissipation port and a support hole;

a drive board, fixedly connected to the support and disposed in the circuit space, the drive board includes a brake pipe and a rectifier bridge disposed opposite to the heat dissipation port;

A capacitor module includes a capacitor plate and a capacitor electrically connected to it, the capacitor plate is electrically connected to the drive plate and disposed in the circuit space, and the capacitor penetrates through the support hole and extends to the heat dissipation space;

The heat dissipation component is arranged in the heat dissipation space and covers the heat dissipation port.

As a further improvement of an embodiment of the present invention, the heat dissipation component includes a heat sink, and the heat sink includes a heat dissipation base plate, and the heat dissipation base plate covers the heat dissipation port.

As a further improvement of an embodiment of the present invention, the heat dissipation component includes a fan, and the two sides of the fan are respectively an air inlet side and an air outlet side;

The radiator includes a plurality of parallel radiating fins, and the two ends of the radiating fins in the extending direction are respectively the air inlet end and the air outlet end;

the housing includes ventilation holes arranged opposite to the air outlet side and the air inlet end;

The air inlet side faces both the air outlet end and the capacitor.

As a further improvement of an embodiment of the present invention, the support member includes an air guide plate, one end of the air guide plate is pressed against the heat dissipation fin adjacent to the capacitor, and the other end extends to the air outlet side and It is divided into a first air outlet side and a second air outlet side, the first air outlet side faces the capacitor, and the second air outlet side faces the air outlet end.

As a further improvement of an embodiment of the present invention, it further includes a control assembly fixedly connected to the outside of the casing, the control assembly includes a control board, the casing includes a control plug interface, and the drive board includes a first control The control board includes a driving socket facing one side of the casing, and the first control socket is connected to the driving socket through the control socket interface.

As a further improvement of an embodiment of the present invention, it also includes several extension assemblies fixedly connected to the outside of the housing, the extension assemblies include an extension board, the control board includes a plurality of extension sockets, and the extension board It includes a second control socket matched with the expansion socket.

As a further improvement of an embodiment of the present invention, the housing includes an end surface disposed opposite to the expansion assembly, and the plug-in direction of the expansion socket and the second control socket is parallel to the end surface.

As a further improvement of an embodiment of the present invention, the control assembly includes a control cover, the expansion assembly includes an expansion cover, and the control cover and the expansion cover are fixedly connected to the housing at the same time;

The end face is set as a rectangle;

The length of the control cover is equal to the length of the end face;

When the expansion assembly is fixedly connected to the housing, the total width of the expansion cover and the control cover is equal to the width of the end face;

When all the expansion sockets are plugged with the expansion components, the total length of all the expansion covers is equal to the length of the end face.

As a further improvement of an embodiment of the present invention, the bracket includes a bracket body and a support ring protruding from the bracket body, the support ring surrounds the support hole, and the side wall of the support ring is provided with several a gap.

As a further improvement of an embodiment of the present invention, the capacitor is vertically fixed to the capacitor plate, and the capacitor plate and the drive plate are parallel to the bracket.

In order to achieve one of the purposes of the above utility model, an embodiment of the present utility model provides a frequency converter, including:

The support includes a bracket, and the bracket includes a heat dissipation limit groove, a positioning groove and a welding hole disposed inside the heat dissipation limit groove, and a heat conduction positioning groove disposed between the heat dissipation limit groove and the positioning groove ;

a brake pipe, including a body and a welding leg, the welding leg passing through the welding hole;

a thermally conductive insulating film, which covers the body in the positioning groove;

The heat sink covers the heat conduction insulating film in the heat conduction positioning groove, and the heat sink is limited in the heat dissipation limit groove and is fixedly connected with the support member.

As a further improvement of an embodiment of the present invention, the support member includes a base, the bracket includes a first fastener, the base includes a second fastener, and the radiator is fixedly connected to the first fastener between the fastener and the second fastener.

As a further improvement of an embodiment of the present invention, the first fastener is fixedly connected to the bracket, and the second fastener is elastically connected to the base.

As a further improvement of an embodiment of the present invention, a support rib extending from the end of the base to the bracket is arranged above the base, and the radiator is arranged on the support rib.

As a further improvement of an embodiment of the present invention, a plurality of foolproof posts are arranged in the heat dissipation limiting groove, and the radiator is provided with foolproof holes matched with the foolproof posts.

As a further improvement of an embodiment of the present invention, the brake pipe is provided with a positioning hole, and the positioning groove is provided with a positioning protrusion matched with the positioning hole.

As a further improvement of an embodiment of the present invention, a plurality of clamping elements are arranged on the opposite inner walls of the positioning groove, some of the clamping elements are fixedly arranged, and some of the clamping elements are arranged elastically.

As a further improvement of an embodiment of the present invention, the bracket includes a through hole disposed at the heat dissipation limiting groove, the heat sink includes a threaded hole, and a bolt passes through the through hole and is threaded with the threaded hole connect.

As a further improvement of an embodiment of the present invention, the bracket includes a heat dissipation port disposed in the heat dissipation limiting groove, the positioning groove and the welding hole are disposed in the heat dissipation port, and the heat sink covers the Cooling vents.

As a further improvement of an embodiment of the present invention, it includes a drive board arranged opposite to the bracket, the drive board includes a plate body, and the brake pipe and the rectifier bridge arranged opposite to the heat dissipation port. The welding legs pass through the welding holes and are welded and connected to the plate body.

Compared with the prior art, the utility model has the following beneficial effects: the frequency converter changes the space layout of the traditional frequency converter, improves the space utilization rate and at the same time has a good heat dissipation effect, and the working environment of each device is good. The space is occupied and will not bring new problems. The space inside the housing is divided into different sections by using brackets. The heat of the devices that generate more heat can be taken away by the heat dissipation components in the heat dissipation space, which has a higher demand for the working environment. The drive board and electric heating board of the inverter are well protected in the circuit space, and the structure of the inverter is compact, reasonable and reliable.

Description of drawings

1 is a schematic structural diagram of a frequency converter according to an embodiment of the present invention;

2 is an exploded view of a frequency converter according to an embodiment of the present invention;

3 is a front view of a frequency converter according to an embodiment of the present invention;

Fig. 4 is the sectional view of A-A direction in Fig. 3;

5 is a schematic structural diagram of a frequency converter according to an embodiment of the present invention with the casing removed;

6 is a schematic structural diagram of a frequency converter according to an embodiment of the present invention with the casing and the radiator removed;

7 is an exploded view of a support, a radiator and a brake pipe of a frequency converter according to an embodiment of the present invention;

8 is a cross-sectional view of a support member, a radiator and a brake pipe of a frequency converter according to an embodiment of the present invention;

Fig. 9 is the partial enlarged view of A place in Fig. 8;

10 is a schematic structural diagram of a support member of a frequency converter according to an embodiment of the present invention;

11 is an exploded view of a frequency converter according to an embodiment of the present invention;

FIG. 12 is an exploded view of an expansion assembly of a frequency converter according to an embodiment of the present invention;

13 is an exploded view of a control assembly of a frequency converter according to an embodiment of the present invention;

1. Shell; 11. End face; 12. Slideway; 13. Control socket; 2. Supporting member; 21. Bottom plate; 211. Second fastener; 212. Supporting rib; , support hole; 2211, support ring; 2212, clearance; 223, first fastener; 222, heat dissipation port; 23, positioning groove; 231, positioning protrusion; 232, clamping piece; 24, welding hole; 25, Heat conduction positioning slot; 26, heat dissipation limit slot; 261, foolproof column; 262, through hole; 27, fan frame; 28, air guide plate; 3, control assembly; 31, control board; 311, drive socket; 312, expansion socket; 32, control cover; 321, jack; 331, display screen; 332, key board; 4, drive board; 41, first control socket; 42, brake pipe; 421, body; 422, welding pin; 423, positioning hole; 43, rectifier bridge; 5, extension assembly; 51, extension board; 511, second control socket; 52, extension cover; 521, plug; 53, lens; 6, Capacitor module; 61, capacitor plate; 62, capacitor; 7, heat dissipation component; 71, radiator; 711, heat dissipation fin; 712, heat dissipation base plate; 713, thermal insulation film; 72, fan; 8, insulating plate; 9 , grounding parts; 10, bolts; 100, circuit space; 200, heat dissipation space.

Detailed ways

The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural, method, or functional transformations made by those of ordinary skill in the art according to these embodiments are all included within the protection scope of the present invention.

An embodiment of the present invention provides a frequency converter, as shown in Figures 1 to 13, the frequency converter has a reasonable layout and a compact structure, which can save a lot of installation space for customers, and can reduce the volume of the frequency converter while maintaining The internal heat dissipation is good and the circuit working environment is good.

Specifically, as shown in FIGS. 1 to 4 , the frequency converter of this embodiment includes a support 2 and a housing 1 , and the interior of the housing 1 encloses an installation space with an opening; the support 2 includes a bottom plate 21 and a bracket 22 that are perpendicular to each other , the bracket 22 is inserted into the installation space along the opening and divided into the circuit space 100 and the heat dissipation space 200, the bottom plate 21 covers the opening and is fixedly connected with the shell 1, and the bottom plate 21 and the shell 1 can be fixedly connected by snaps or bolts 10 , the housing 1 of this embodiment is provided with a cube structure as shown in FIG. 1 or FIG. 2 .

In order to clearly express the position and direction described in this embodiment, in this embodiment, the direction of the housing 1 relative to the support member 2 is defined as the front, and the opposite direction is defined as the rear, that is, the bracket 22 is inserted and installed from the rear to the front. In addition, the height of the inverter can also be defined from the front to the rear; the definition bracket 22 extends in the vertical direction, and the two sides separated by the installation space are defined as left and right respectively. In this embodiment, the circuit space is set 100 is on the right, and the cooling space 200 is on the left. Of course, it can be replaced in the left and right directions; the front, back, left and right sides are defined as the horizontal plane, and the vertical direction is perpendicular to the horizontal plane. The horizontal plane is only a name definition, not limited to the physical sense. Of course, in this preferred embodiment, the vertical direction is parallel to the vertical direction of physics (that is, with reference to the direction of gravity), and the horizontal plane is correspondingly parallel to the horizontal plane in physics.

The frequency converter also includes a drive plate 4 fixedly connected to the support 2 and disposed inside the casing 1, a heat dissipation assembly 7 disposed in the heat dissipation space 200, the bracket 22 includes a heat dissipation port 222 and a support hole 221, and the drive plate 4 includes a heat dissipation port 222 and a heat dissipation hole 221. The brake pipe 42 and the rectifier bridge 43 are arranged opposite to the opening 222, and the heat dissipation assembly 7 covers the heat dissipation port 222. On the one hand, the heat of the brake pipe 42 and the rectifier bridge 43 that generate more heat on the drive board 4 passes through the heat dissipation port 222. It is transmitted to the heat dissipation assembly 7, and the heat is removed in time to avoid temperature accumulation. On the other hand, the heat dissipation space 200 is separated from the brake pipe 42 and the rectifier bridge 43 by the heat dissipation assembly 7, which ensures that the drive board 4 is isolated from the heat dissipation space 200. while effectively dissipating heat.

The frequency converter further includes a capacitor module 6 , the capacitor module 6 includes a capacitor plate 61 and a capacitor 62 electrically connected to it, the capacitor plate 61 is electrically connected to the driving board 4 and disposed in the circuit space 100 , and the capacitor 62 is penetrated through the support hole 221 And extended to the heat dissipation space 200, the capacitor 62 will also generate a lot of heat during operation, which needs to be discharged in time, and the capacitor plate 61 needs to avoid contact with too much dust. At the same time, the capacitor 62 effectively dissipates heat.

The left and right spaces are respectively used to protect the circuit environment and to dissipate heat. The division of labor in different spaces makes the use of each space more efficient, thereby improving the space utilization rate in the entire installation space. At the same time, the inverter generates more heat. The heat of the capacitor 62 , the brake tube 42 and the rectifier bridge 43 three "large heat generators" can be effectively dissipated through the heat dissipation component 7 , and the working effect is good.

The frequency converter changes the space layout of the traditional frequency converter. It improves the space utilization rate and has a good heat dissipation effect, and the working environment of each device is good. It reduces the space occupation and does not bring new problems. The space inside the housing 1 is divided into different sections. The heat of the devices that generate more heat can be taken away by the heat dissipation component 7 in the heat dissipation space 200 , and the drive board 4 and the electric heating board that have higher requirements on the working environment are in the circuit space. 100 is well protected, the inverter is compact, reasonable and reliable.

Further, as shown in FIGS. 2 , 4 and 5 , the heat dissipation assembly 7 includes a fan 72 and a radiator 71 . The heat sink 71 includes a heat dissipation base plate 712 and a plurality of parallel heat dissipation fins 711 , and the heat dissipation base plate 712 covers the heat dissipation port 222 . The two sides of the fan 72 are the air inlet side and the air outlet side respectively, and the two ends of the extension direction of the cooling fins 711 are the air inlet end and the air outlet end respectively. hole, the air inlet side faces the air outlet end and the capacitor 62 at the same time.

The heat generated by the brake pipe 42 and the rectifier bridge 43 is transmitted to the heat dissipation fins 711 through the heat dissipation base plate 712, and an air channel for airflow is formed between the adjacent heat dissipation fins 711, and the heat is evaporated to the wind through the heat dissipation fins 711. The air is discharged in the duct, and two air flow channels are formed in the heat dissipation space 200: one is for the air flow to pass through the ventilation holes on one side of the casing 1, the air inlet end, the heat dissipation fins 711, the air outlet end, the air inlet, the fan 72 and the air outlet, The ventilation hole on the other side of the shell 1 is discharged; the other is that the airflow is discharged through the ventilation hole on one side of the shell 1, the capacitor 62, the air inlet, the fan 72 and the air outlet, and the ventilation hole on the other side of the shell 1. During the flow, dust will inevitably be deposited on the capacitor 62 , the cooling fins 711 and the fan 72 , but there is no such airflow in the circuit space 100 , so the driving board 4 and the capacitor board 61 are well protected.

The support member 2 further includes a fan 72 frame 27 for fixing the fan 72 . As shown in FIGS. 5 to 7 , the fan 72 frame 27 is arranged between the bracket 22 and the bottom plate 21 .

Further, the support member 2 includes an air guide plate 28, one end of the air guide plate 28 is pressed against the heat dissipation fin 711 adjacent to the capacitor 62, and the other end extends to the air outlet side and is divided into a first air outlet side and a second air outlet side. Two air outlet sides, the first air outlet side faces the capacitor 62, and the second air outlet side faces the air outlet end. After many experiments, when the air guide plate 28 is not provided, the air flow near the capacitor 62 is not as good as that of the cooling fin 711. too much, which affects the heat dissipation of the capacitor 62. In this embodiment, a wind deflector 28 is provided, which plays the role of separating the airflow, as shown in FIG. 5 and FIG. 6, which ensures that the fan 72 absorbs the radiator 71 and the capacitor at the same time. 62 heat for two spaces.

Further, the frequency converter further includes a control assembly 3 fixedly connected to the outside of the casing 1 , the control assembly 3 includes a control board 31 , the casing 1 includes a control socket 13 , the drive board 4 includes a first control socket 41 , and the control board 31 It includes a drive socket 311 facing the side of the housing 1. The first control socket 41 is connected to the drive socket 311 through the control socket 13. The board body of the drive board 4 is provided with a drive circuit, which is respectively connected to the external input. terminal and the output terminal of the variable frequency voltage, and can also be connected to the braking resistor and the inverter; the structure of the drive board 4 is shown in Figures 2 and 4, and a control circuit is set on the board body of the control board 31, which can be used to display the work of the inverter. status information and receive control signals from the user.

In this embodiment, the first control socket 41 protrudes from the inside of the housing 1 through the control socket 13, and is then engaged with the driving socket 311, which is connected in this embodiment; The socket 13 extends into the casing 1 to engage with the first control socket 41 . Since the drive board 4 in the casing 1 is connected to strong electricity, and the control board 31 is connected to the weak point, separating the two can better protect the control circuit.

Further, the frequency converter also includes a number of expansion assemblies 5 fixedly connected to the outside of the housing 1. As shown in Figures 11 and 12, the expansion assembly 5 includes an expansion board 51, the control board 31 includes a number of expansion sockets, and the expansion board 51 It includes a second control socket 511 which is mated with the expansion socket. 1, 3 to 6, and 11 of this embodiment, the control assembly 3 and the expansion assembly 5 are disposed adjacent to the outside of the housing 1, and two expansion assemblies 5 are disposed. Of course, the number of expansion assemblies 5 can also be customized according to the size of the inverter There are 1, 3, etc., and the type of the expansion component 5 can be customized and replaced according to user needs. The expansion sockets 312 are all arranged on the left side of the control component 3.

The extension assembly 5 can be set as a programmer detection assembly, an IO extension assembly 5, a bus adapter assembly or an optical fiber extension assembly 5, and these extension assemblies 5 can be plugged in up and down positions interchangeably. The two expansion components 5 in this embodiment can be respectively set with an IO digital hybrid card and an IR expansion card, or can be set as a bus dual network port expansion card.

By placing the expansion component 5 externally, the customer can select the appropriate expansion component 5 for assembly according to their needs, that is, the inverter can reduce the integration of modules that the customer does not need, thereby reducing the overall cost and price of the inverter and enhancing product competitiveness. , and in order to make the shape of some inverters regular, each part of the inverter, such as the rectifier unit and the expansion unit, is made into a cube with the same height, which can lead to a serious waste of space. If there are multiple expansion units, it will waste more The space of the present application is set in this way, so that the outer shape of the expansion assembly 5 can also be made thinner, thereby reducing the size of the entire frequency converter.

Further, the housing 1 includes an end face 11 opposite to the expansion assembly 5 , and the plugging direction of the expansion plug row and the second control row plug 511 is parallel to the end face 11 . The side to the right is engaged with the expansion socket 312 . Due to the general terminal interface, the length in the plugging direction is longer than the length on the plane perpendicular to it, and the extension plug is inserted along the direction parallel to the end face 11 and the second control plug 511, that is, the left and right direction. Plug-in instead of the front-to-rear direction can reduce the height of the extension assembly 5 in the direction perpendicular to the end face 11, so that the thickness of the entire inverter can be made lower.

Further, the control assembly 3 includes a control cover 32, the extension assembly 5 includes an extension cover 52, and a lens 53 is provided on the extension cover 52 to play the role of encapsulation and protection, and the control cover 32 and the extension cover 52 are fixedly connected to the same. Housing 1, the end face 11 of the housing 1 is set to be rectangular; the length of the control cover 32 is equal to the length of the end face 11. When the extension assembly 5 is fixedly connected to the housing 1, the total length of the extension cover 52 and the control cover 32 is equal. The width is equal to the width of the end surface 11 . When all the expansion sockets are inserted into the expansion assembly 5 , the total length of all the expansion covers 52 is equal to the length of the end surface 11 .

Preferably, the entire casing 1 is configured as a cubic structure, so that after assembling the control assembly 3 and the expansion assembly 5, the length and width of the whole machine do not change, but only increase a little in the height direction, so that the whole machine has a regular shape.

In addition, as shown in FIG. 2 , a slideway 12 parallel to the end surface 11 of the housing 1 is provided on the outside of the housing 1 , the control cover 32 is fixedly connected to the end surface 11 , and the extension cover 52 is in contact with the end surface 11 along the slideway 12 . The control cover 32 is fixedly connected to the housing 1 through a fixing member; and as shown in FIGS. 12 and 13 , a plug 521 is provided on the extension cover 52, and a corresponding plug 521 is provided on the opposite control cover 32 so that when the extension assembly 5 slides into place along the direction from left to right, the insert block 521 is inserted into the jack 321 to achieve accurate positioning.

Further, as shown in FIG. 7 , the bracket 22 includes a bracket body and a support ring 2211 protruding from the bracket body. The support ring 2211 encloses a support hole 221 , the side wall of the support ring 2211 is provided with several gaps 2212 , and the support ring 2211 Provides a supporting force to the capacitor 62, and the support ring 2211 acts as a fastening function to prevent the capacitor 62 from sliding, but the capacitor 62 is often accompanied by some vibration and may expand and contract due to heat during operation. The vibration of 62 drives the entire inverter to vibrate and can effectively support it when it expands and shrinks, and the setting gap 2212 plays the role of buffering and shock absorption.

Further, the capacitor 62 is vertically fixed to the capacitor plate 61, and the capacitor plate 61 and the drive plate 4 are parallel to the bracket 22, as shown in FIG. The distance from the radiator 71 to the inner wall of the casing 1 can be set as short as possible to save the internal space and maximize the overall space utilization rate.

In addition, the frequency converter also includes a grounding member 9 that is electrically connected to the control board 31 and the driving board 4 at the same time, and an insulating plate 8 disposed between the capacitor board 61 and the driving board 4, as shown in Figures 2 and 4, to ensure frequency conversion To ensure the effective operation of the device, the control assembly 3 includes a display control device arranged on the control cover 32, the display control device is electrically connected to the control board 31, and the display control device can be a touch screen or the structure shown in FIG. 13, including a display control device. screen 331 and key pad 332.

The bracket 22 of the frequency converter includes a heat dissipation limit groove 26, a positioning groove 23 and a welding hole 24 disposed inside the heat dissipation limit groove 26, and a heat conduction positioning groove 25 disposed between the heat dissipation limit groove 26 and the positioning groove 23. The moving tube 42 includes a main body 421 and a welding leg 422, the radiator 71 includes a thermally conductive insulating film 713, the welding leg 422 passes through the welding hole 24, the thermally conductive insulating film 713 covers the body 421 in the positioning groove 23, and the radiator 71 insulates the heat conduction The film 713 is covered in the heat-conducting positioning groove 25 , and the heat sink 71 is restricted in the heat-dissipating limiting groove 26 and is fixedly connected to the support member 2 .

During the assembly process of the brake pipe 42 , the body 421 of the brake pipe 42 is first placed in the positioning groove 23 , and the welding feet 422 pass through the welding holes 24 to be welded with the circuit board on the other side of the bracket 22 . The installation is limited to the positioning groove 23, that is, the positioning of the brake pipe 42 is realized, and the positioning groove 23 is directly set on the bracket 22, so this process does not require the assistance of other positioning equipment; then the thermal insulation film 713 It is placed in the thermally conductive positioning groove 25, so that the positioning of the thermally conductive insulating film 713 is realized without an auxiliary positioning tool, and when the thermally conductive insulating film 713 is placed, the brake pipe 42 is completely covered in the positioning groove 23; The radiator 71 is placed in the heat dissipation limiting groove 26 to realize its own positioning and the positioning of the thermally conductive insulating film 713 , and finally the radiator 71 is fixedly connected to the support 2 , that is, the positioning and installation of the brake pipe 42 is realized.

In this way, the production and assembly process of the brake pipe 42 can be simplified, and the assistance of positioning the pressing block is not required during the installation and fixation of the brake pipe 42. The positioning of the device 71 is good, and the positioning effect is good without offset, which improves the welding quality of the brake pipe 42 and the circuit board, reduces the use of screws, accelerates the assembly speed, and improves the production efficiency.

Further, as shown in FIGS. 7 , 8 and 10 , the bracket 22 includes a first fastener 223 , the base includes a second fastener 211 , and the radiator 71 is fixedly connected to the first fastener 223 and the second fastener Between 211, the first fastener 223 is fixedly connected to the bracket 22, the second fastener 211 is elastically connected to the base, the support rib 212 extending from the end of the base to the bracket 22 is arranged above the base, and the radiator 71 is arranged on the support On the rib plate 212, the first fastener 223, the second fastener 211 and the support rib plate 212 realize the positioning and clamping of the radiator 71.

As shown in FIGS. 8 to 9 , a plurality of clamping members 232 are arranged on the opposite inner walls of the positioning groove 23 , some of the clamping members 232 are fixedly arranged, and some of the clamping members 232 are elastically arranged, so that the brake pipe 42 is placed in the positioning groove 23 . It is then clamped and fixed.

In addition, as shown in FIG. 10 , a number of foolproof posts 261 are arranged in the heat dissipation limiting groove 26, and the radiator 71 is provided with foolproof holes matched with the foolproof posts 261 to ensure that the radiator 71 is installed in an accurate position; The movable tube 42 is provided with a positioning hole 423 , and the positioning groove 23 is provided with a positioning protrusion 231 matched with the positioning hole 423 , which ensures the installation of the radiator 71 . The bracket 22 further includes a through hole 262 disposed at the heat dissipation limiting groove 26 , the heat sink 71 includes a threaded hole, and the bolt 10 passes through the through hole 262 and is threadedly connected to the threaded hole.

The bracket 22 includes a heat dissipation port 222 arranged in the heat dissipation limiting groove 26, and a positioning groove 23 and a welding hole 24 are arranged in the heat dissipation port 222. The positioning groove 23 can be a hollow back structure or a closed structure. The positioning grooves 23 of the dynamic pipe 42 are several convex structures arranged opposite to each other and can clamp the brake pipe 42; There is a hollow structure between the actuators 71, and the drive plate 4 also includes a plate body. In this embodiment, the position of the positioning groove 23 is closed, and the welding feet 422 of the brake pipe 42 are welded to the plate body through the welding holes 24, so that the The moving tube 42 is kept connected to the board body, and at the same time, the heat transfer into the circuit space 100 is minimized.

Compared with the prior art, this embodiment has the following beneficial effects:

The frequency converter changes the space layout of the traditional frequency converter. It improves the space utilization rate and has a good heat dissipation effect, and the working environment of each device is good. While reducing the space occupation, it will not bring new problems. 2. Divide the space inside the inverter into different sections. The heat of the devices that generate more heat can be taken away by the heat dissipation component 7 in the heat dissipation space 200. The drive board 4 and the electric heating board that have higher requirements for the working environment are in the circuit space. 100 is well protected, the inverter is compact, reasonable and reliable.

The detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Changes should be included within the scope of protection of the present invention.

Claims (10)

1. a frequency converter, is characterized in that, comprises: a housing, the interior of which encloses an installation space with an opening; a support, comprising a bottom plate and a bracket that are perpendicular to each other, the bracket is inserted into the installation space along the opening and divided into a circuit space and a heat dissipation space, the bottom plate covers the opening and is fixedly connected with the housing, The bracket includes a heat dissipation port and a support hole; a drive board, fixedly connected to the support and disposed in the circuit space, the drive board includes a brake pipe and a rectifier bridge disposed opposite to the heat dissipation port; A capacitor module includes a capacitor plate and a capacitor electrically connected to it, the capacitor plate is electrically connected to the drive plate and disposed in the circuit space, and the capacitor penetrates through the support hole and extends to the heat dissipation space; The heat dissipation component is arranged in the heat dissipation space and covers the heat dissipation port. 2 . The frequency converter according to claim 1 , wherein the heat dissipation component comprises a heat sink, and the heat sink includes a heat dissipation base plate, and the heat dissipation base plate covers the heat dissipation port. 3 . 3 . The frequency converter according to claim 2 , wherein the heat dissipation assembly comprises a fan, and two sides of the fan are respectively an air inlet side and an air outlet side; 3 . The radiator includes a plurality of parallel radiating fins, and the two ends of the radiating fins in the extending direction are respectively the air inlet end and the air outlet end; the housing includes ventilation holes arranged opposite to the air outlet side and the air inlet end; The air inlet side faces both the air outlet end and the capacitor. 4 . The frequency converter according to claim 3 , wherein the support member comprises an air guide plate, one end of the air guide plate is pressed against the heat dissipation fin adjacent to the capacitor, and the other end extends to the The air outlet side is divided into a first air outlet side and a second air outlet side, the first air outlet side faces the capacitor, and the second air outlet side faces the air outlet end. 5 . The frequency converter according to claim 1 , further comprising a control assembly fixedly connected to the outside of the casing, the control assembly comprising a control board, the casing comprising a control plug interface, the drive The board includes a first control socket, the control board includes a driving socket facing one side of the housing, and the first control socket is connected to the driving socket through the control socket interface. 6 . The frequency converter according to claim 5 , further comprising a plurality of extension assemblies fixedly connected to the outside of the housing, the extension assemblies comprising an extension board, and the control board comprising a plurality of extension sockets. 7 . , the expansion board includes a second control socket matched with the expansion socket. 7 . The frequency converter according to claim 6 , wherein the housing comprises an end face disposed opposite to the expansion assembly, and the plug-in directions of the expansion plugs and the second control plugs are parallel to 7 . the end face. 8 . The frequency converter according to claim 7 , wherein the control assembly includes a control cover, the expansion assembly includes an expansion cover, and the control cover and the expansion cover are fixedly connected to the control cover at the same time. 9 . the shell; The end face is set as a rectangle; The length of the control cover is equal to the length of the end face; When the expansion assembly is fixedly connected to the housing, the total width of the expansion cover and the control cover is equal to the width of the end face; When all the expansion sockets are plugged with the expansion components, the total length of all the expansion covers is equal to the length of the end face. 9 . The frequency converter according to claim 1 , wherein the support comprises a support body and a support ring protruding from the support body, the support ring encloses the support hole, and the support ring There are several gaps on the side wall. 10 . The frequency converter according to claim 1 , wherein the capacitor is vertically fixed to the capacitor plate, and the capacitor plate and the drive plate are parallel to the bracket. 11 .

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