Frequency converter

Abstract

The utility model discloses a frequency converter. The frequency converter comprises a housing, a mounting rack, a heat radiation assembly and a frequency conversion main body. The mounting frame is arranged in the shell, an air duct is formed in the mounting frame, and the mounting frame is provided with a plurality of adjacent mounting positions in the air duct in the circumferential direction of the shell; the heat dissipation assembly is arranged in the air duct; the frequency conversion main body is arranged in the air duct and located on one side, in the height direction of the shell, of the heat dissipation assembly, the frequency conversion main body comprises a rectification assembly, an inversion assembly and a control assembly, and the rectification assembly, the inversion assembly and the control assembly are arranged in the installation positions respectively. When the frequency converter provided by the utility model is installed, the heat dissipation assembly with a large volume is arranged in the air channel, and then the rectification assembly, the inversion assembly and the control assembly are respectively arranged in one installation position, so that the structure of the frequency conversion main body is more compact, and the volume of the frequency converter is effectively reduced; and the rectification assembly, the inversion assembly and the control assembly are in modular design, so that the device is convenient to install and disassemble during maintenance, and the maintenance time is reduced.

Description

Technical Field

[0001] The utility model relates to the field of industrial control frequency converters, in particular to a frequency converter. Background Art

[0002] The existing high-power inverter is usually installed in a stacked manner, that is, multiple power components of the high-power inverter are stacked along the height direction of the inverter, which makes the inverter larger in height, causing inconvenience in installation and transportation. In addition, the modular design of the power components of the existing high-power inverter is insufficient, and different power components are difficult to install or disassemble for maintenance, which is not convenient for the installation and maintenance of the inverter. Utility Model Content

[0003] The main purpose of the utility model is to provide a frequency converter, aiming to reduce the volume of the frequency converter and facilitate installation and maintenance.

[0004] To achieve the above-mentioned purpose, the frequency converter proposed by the utility model comprises:

[0005] case;

[0006] A mounting frame is arranged in the shell, the mounting frame forms an air duct, and the mounting frame has a plurality of mounting positions arranged adjacent to each other in the air duct along the circumference of the shell;

[0007] A heat dissipation component is disposed in the air duct; and

[0008] The frequency conversion body is arranged in the air duct and is located on one side of the heat dissipation component in the height direction of the shell; the frequency conversion body includes a rectifier component, an inverter component and a control component, and the rectifier component, the inverter component and the control component are each arranged in one of the installation positions.

[0009] In one embodiment, the position of the frequency conversion body corresponds to the position of the heat dissipation component along the height direction of the shell.

[0010] In one embodiment, the plurality of mounting positions include a first mounting position, a second mounting position and a third mounting position, and the first mounting position and the second mounting position are arranged opposite to each other along the width direction of the shell; the rectifier component is arranged in the first mounting position, the inverter component is arranged in the second mounting position, and the control component is arranged in the third mounting position.

[0011] In one embodiment, the rectifier assembly includes a rectifier bridge and a discharge resistor, and the discharge resistor and the rectifier bridge are arranged side by side along the height direction of the shell.

[0012] In one embodiment, the inverter assembly includes a drive board, a power board and an inverter module, the drive board and the power board are arranged side by side along the thickness direction of the shell, and the inverter module and the drive board are arranged side by side along the height direction of the shell.

[0013] In one embodiment, the rectifier assembly includes a rectifier bridge and a discharge resistor, and the discharge resistor and the rectifier bridge are arranged side by side along the height direction of the housing;

[0014] The inverter assembly includes a drive board, a power board and an inverter module, wherein the drive board and the power board are arranged side by side along the thickness direction of the shell, and the inverter module and the drive board are arranged side by side along the height direction of the shell;

[0015] The position of the discharge resistor corresponds to the positions of the drive board and the power board along the width direction of the housing, and the position of the rectifier bridge corresponds to the position of the inverter module along the width direction of the housing.

[0016] In one embodiment, the air duct has an air inlet and an air outlet, and the heat dissipation component includes:

[0017] A mounting plate is arranged in the air duct and located on one side of the frequency conversion body;

[0018] A fan is arranged on the mounting plate and is disposed toward the air inlet. The fan is located between the mounting plate and the frequency conversion body and is electrically connected to the control component.

[0019] In one embodiment, the frequency converter further includes:

[0020] The display operation component is arranged on the housing and is electrically connected to the control component, and is used to provide an interactive operation interface for the user.

[0021] In one embodiment, the display and operation assembly is detachably connected to the housing.

[0022] In one embodiment, the frequency converter further comprises a caster assembly, wherein the caster assembly is disposed on the housing and is used for transporting the frequency converter;

[0023] And / or, the frequency converter further comprises a lifting component, the lifting component is arranged on the housing, and the lifting component is used for a user to hold and lift the frequency converter;

[0024] And / or, the frequency converter further comprises a lifting ring assembly, wherein the lifting ring assembly is arranged on the housing, and the lifting ring assembly is used to be connected to a lifting hook of a lifting assembly to lift the frequency converter.

[0025] The technical solution of the utility model is to divide the frequency conversion body into a modular rectifier component, an inverter component and a control component, and then set a mounting frame with an air duct in the shell. During actual installation, the larger heat dissipation component is first set in the air duct, and then the rectifier component, the inverter component and the control component are each set in a mounting position, so that the structure of the frequency conversion body is more compact and the volume of the frequency converter is effectively reduced. Moreover, since the rectifier component, the inverter component and the control component are modularly designed, they are not only easy to install, but also easy to disassemble during maintenance, which reduces maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the frequency converter of the utility model;

[0028] Figure 2 It is a partial structural diagram of an embodiment of the frequency converter of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the inverter component in the frequency converter of the utility model;

[0030] Figure 4 It is a partial structural diagram of another embodiment of the frequency converter of the utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the rectifier component in the frequency converter of the utility model;

[0032] Figure 6 It is a partial structural schematic diagram of another embodiment of the frequency converter of the utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the control component in the frequency converter of the utility model;

[0034] Figure 8 It is a structural schematic diagram of the heat dissipation component in the frequency converter of the utility model.

[0035] Description of Figure Numbers:

[0036]

[0037]

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0042] The existing high-power inverter is usually installed in a stacked manner, that is, multiple power components of the high-power inverter are stacked along the height direction of the inverter, which makes the inverter larger in height, causing inconvenience in installation and transportation. In addition, the modular design of the power components of the existing high-power inverter is insufficient, and different power components are difficult to install or disassemble for maintenance, which is not convenient for the installation and maintenance of the inverter.

[0043] In order to improve the above situation, the present invention proposes a frequency converter 10 , which aims to reduce the size of the frequency converter 10 and facilitate installation and maintenance.

[0044] Reference Figures 1 to 7 In one embodiment of the present utility model, the frequency converter 10 comprises:

[0045] Housing 100;

[0046] A mounting frame 110 is disposed in the housing 100, the mounting frame 110 forms an air duct 120, and the mounting frame 110 has a plurality of mounting positions adjacently disposed in the air duct 120 along the circumference of the housing 100;

[0047] A heat dissipation component 130 is disposed in the air duct 120; and

[0048] The frequency conversion body 140 is arranged in the air duct 120 and is located on one side of the heat dissipation component 130 in the height direction of the shell 100; the frequency conversion body 140 includes a rectifier component 141, an inverter component 142 and a control component 143, and the rectifier component 141, the inverter component 142 and the control component 143 are each arranged in one of the installation positions.

[0049] Optionally, the housing 100 may be implemented as a rectangular housing or a housing of other shapes. In this embodiment, the housing 100 is implemented as a rectangular housing. Figure 2 and Figure 4 As shown, the rectangular shell 100 includes a first side plate 101, a second side plate 102, a third side plate 103 and a fourth side plate 104 that are adjacently arranged. The first side plate 101 and the second side plate 102 are relatively arranged along the width direction of the shell 100, and the third side plate 103 and the fourth side plate 104 are relatively arranged along the thickness direction of the shell 100. The first side plate 101, the second side plate 102, the third side plate 103 and the fourth side plate 104 are enclosed to form a accommodating cavity for accommodating the relevant components of the inverter 10 of this embodiment, and play a role in installing and protecting the relevant components of the inverter 10.

[0050] Optionally, the shell 100 may be made of plastic or metal. The specific material is not particularly limited and may be set according to actual requirements of the inverter 10 .

[0051] In this embodiment, the mounting frame 110 includes a first frame, a second frame, a third frame and a fourth frame which are arranged adjacent to each other. The first frame and the second frame are arranged oppositely along the width direction of the housing 100, the first frame is arranged toward the first side plate 101, and the second frame is arranged toward the second side plate 102; the third frame and the fourth frame are arranged oppositely along the thickness direction of the housing 100, the third frame is arranged toward the third side plate 103, and the fourth frame is arranged toward the fourth side plate 104. The first frame, the third frame, the second frame and the fourth frame are sequentially connected along the circumference of the housing 100 to enclose and form an air duct 120, and the heat dissipation assembly 130 and the frequency conversion body 140 are respectively arranged in the air duct 120.

[0052] Further, the first frame, the second frame, the third frame and the fourth frame form a mounting position in the air duct 120 respectively. The rectifier assembly 141, the inverter assembly 142 and the control assembly 143 of the frequency conversion body 140 are each arranged in a mounting position, for example, the rectifier assembly 141 is arranged in the mounting position formed by the first frame, the inverter assembly 142 is arranged in the mounting position formed by the second frame, and the control assembly 143 is arranged in the mounting position formed by the third frame; or, the rectifier assembly 141 is arranged in the mounting position formed by the first frame, the control assembly 143 is arranged in the mounting position formed by the second frame, and the inverter assembly 142 is arranged in the mounting position formed by the third frame; or, the inverter assembly 142 is arranged in the mounting position formed by the first frame, the control assembly 143 is arranged in the mounting position formed by the second frame, and the rectifier assembly 141 is arranged in the mounting position formed by the third frame. It can be deduced from this that there are other combinations of installation methods for the rectifier assembly 141, the inverter assembly 142 and the control assembly 143, which will not be repeated here one by one.

[0053] With such arrangement, the power components such as the rectifier component 141, the inverter component 142 and the control component 143 can be installed in a modular manner inside the housing 100 of the frequency converter 10, so as to realize the reasonable layout of the power components of the frequency converter main body 140, so as to make the structure of the frequency converter 10 more compact, effectively reduce the volume of the frequency converter 10, and facilitate its installation and transportation. At the same time, since the power components such as the rectifier component 141, the inverter component 142 and the control component 143 of the frequency converter main body 140 are modularly designed, not only can modular installation be realized, and the installation efficiency of the frequency converter 10 is improved, but also it is convenient to disassemble and repair when any power component is damaged, and the maintenance time of the power component is effectively reduced. In addition, the heat generated by the power components such as the rectifier component 141, the inverter component 142 and the control component 143 during operation can be directly transferred to the air duct 120, and the heat is dissipated through the heat dissipation component 130 in the air duct 120, so as to avoid excessive heat from accumulating in the above power components, thereby improving the heat dissipation performance of the frequency converter 10.

[0054] The technical solution of the utility model is to divide the frequency conversion body 140 into a modular rectifier assembly 141, an inverter assembly 142 and a control assembly 143, and then set a mounting frame 110 with an air duct 120 in the housing 100. In actual installation, the heat dissipation assembly 130 with a larger volume is first set in the air duct 120, and then the rectifier assembly 141, the inverter assembly 142 and the control assembly 143 are respectively set in a mounting position, so that the structure of the frequency conversion body 140 is more compact, and the volume of the frequency converter 10 is effectively reduced. Moreover, since the rectifier assembly 141, the inverter assembly 142 and the control assembly 143 are modularly designed, they are not only easy to install, but also easy to disassemble during maintenance, thereby reducing maintenance time.

[0055] Reference Figures 1 to 7 Optionally, in an embodiment of the present utility model, the position of the frequency conversion body 140 corresponds to the position of the heat dissipation component 130 along the height direction of the housing 100 .

[0056] In this embodiment, the frequency conversion body 140 and the heat dissipation assembly 130 are respectively arranged in the air duct 120 and are arranged at intervals along the height direction of the housing 100. The positions of the power components such as the rectifier assembly 141, the inverter assembly 142 and the control assembly 143 of the frequency conversion body 140 on the mounting position of the mounting frame 110 correspond to the position of the heat dissipation assembly 130 in the height direction of the housing 100. In other words, the main structures such as the frequency conversion body 140 and the heat dissipation assembly 130 of the frequency converter 10 are concentrated in the height direction of the housing 100, thereby effectively reducing the volume in width.

[0057] Reference Figures 1 to 7 Optionally, in an embodiment of the present invention, the plurality of mounting positions include a first mounting position 111, a second mounting position 112 and a third mounting position 113, and the first mounting position 111 and the second mounting position 112 are arranged opposite to each other along the width direction of the shell 100; the rectifier component 141 is arranged in the first mounting position 111, the inverter component 142 is arranged in the second mounting position 112, and the control component 143 is arranged in the third mounting position 113.

[0058] In this embodiment, the plurality of mounting positions provided in the mounting frame 110 include a first mounting position 111, a second mounting position 112 and a third mounting position 113, wherein the first mounting position 111 is a mounting position formed by a first frame, the second mounting position 112 is a mounting position formed by a frame, and the third mounting position 113 is a mounting position formed by a third frame. The first mounting position 111 and the second mounting position 112 are arranged opposite to each other along the width direction of the housing 100, and the third mounting position 113 is arranged between the first mounting position 111 and the second mounting position 112, and is arranged adjacent to the first mounting position 111 and the second mounting position 112. The rectifier assembly 141 is arranged in the first mounting position 111, the inverter assembly 142 is arranged in the second mounting position 112, and the control assembly 143 is arranged in the third mounting position 113. That is, the rectifier assembly 141 and the inverter assembly 142 are arranged opposite to each other along the width direction of the housing 100, and the control assembly 143 is arranged on the same side of the rectifier assembly 141 and the inverter assembly 142 along the thickness direction of the housing 100. With such configuration, the volume of the inverter 10 can be reduced in both the thickness direction and the width direction of the housing 100 , that is, the volume of the inverter 10 is further reduced, making it easier to install and transport.

[0059] Reference Figures 1 to 7Optionally, in an embodiment of the present utility model, the rectifier assembly 141 includes a rectifier bridge 1411 and a discharge resistor 1412 , and the discharge resistor 1412 and the rectifier bridge 1411 are arranged side by side along the height direction of the housing 100 .

[0060] In this embodiment, the rectifier assembly 141 includes a rectifier bridge 1411 and a discharge resistor 1412. The rectifier bridge 1411 is used to convert the input AC power into DC power, and provide a DC power supply for the subsequent inverter assembly 142. At the same time, the rectifier bridge 1411 also plays an important role in filtering, filtering the DC power, reducing its fluctuations, and improving the stability and control accuracy of the circuit of the inverter 10. The discharge resistor 1412 is used to reduce the current peak, play a role in current limiting, and protect the inverter 10 and the motor. The discharge resistor 1412 can also play a role in voltage stabilization, stabilize the voltage, and maintain the stability of the output voltage and frequency of the inverter 10.

[0061] When the rectifier assembly 141 is arranged at the first installation position 111, the discharge resistor 1412 and the rectifier bridge 1411 of this embodiment are arranged side by side along the height direction of the shell 100, so as to realize a reasonable layout of the relevant structures of the rectifier assembly 141, reduce the installation space occupied by the rectifier assembly 141 in the shell 100, and thus reduce the volume of the inverter 10.

[0062] Reference Figures 1 to 7 Optionally, in one embodiment of the utility model, the inverter assembly 142 includes a drive board 1421, a power board 1422 and an inverter module 1423, the drive board 1421 and the power board 1422 are arranged side by side along the thickness direction of the shell 100, and the inverter module 1423 and the drive board 1421 are arranged side by side along the height direction of the shell 100.

[0063] In this embodiment, the inverter assembly 142 includes a drive board 1421, a power board 1422 and an inverter module 1423. The drive board 1421 is used to integrate the inverter module 1423, and is used to receive the control signal output by the control board of the inverter 10. After optical coupling isolation and amplification, the inverter module 1423 is controlled to complete the inverter function, thereby adjusting the speed, torque and direction of the motor. The power board 1422 is electrically connected to the drive board 1421, and is used to provide power to the drive board 1421 and the inverter module 1423 on the drive board 1421.

[0064] When the inverter component 142 is set in the second installation position 112, the drive board 1421 and the power board 1422 of this embodiment are arranged side by side along the thickness direction of the shell 100, and the inverter module 1423 and the drive board 1421 are arranged side by side along the height direction of the shell 100, so as to realize the reasonable layout of the relevant structures of the inverter component 142, reduce the installation space occupied by the inverter component 142 in the shell 100, and thus reduce the volume of the inverter 10.

[0065] Reference Figures 1 to 8 Optionally, in an embodiment of the present utility model, the rectifier assembly 141 includes a rectifier bridge 1411 and a discharge resistor 1412, and the discharge resistor 1412 and the rectifier bridge 1411 are arranged side by side along the height direction of the housing 100;

[0066] The inverter assembly 142 includes a drive board 1421, a power board 1422 and an inverter module 1423. The drive board 1421 and the power board 1422 are arranged side by side along the thickness direction of the housing 100, and the inverter module 1423 and the drive board 1421 are arranged side by side along the height direction of the housing 100.

[0067] The position of the discharge resistor 1412 corresponds to the positions of the drive board 1421 and the power board 1422 along the width direction of the housing 100 , and the position of the rectifier bridge 1411 corresponds to the position of the inverter module 1423 along the width direction of the housing 100 .

[0068] In this embodiment, the rectifier assembly 141 is arranged in the first installation position 111, and the discharge resistor 1412 and the rectifier bridge 1411 of the rectifier assembly 141 are arranged side by side along the height direction of the housing 100; the inverter assembly 142 is arranged in the second installation position 112, and the drive board 1421 and the power board 1422 of the inverter assembly 142 are arranged side by side along the thickness direction of the housing 100, and the inverter module 1423 and the drive board 1421 of the inverter assembly 142 are arranged side by side along the height direction of the housing 100. On this basis, the position of the discharge resistor 1412 of this embodiment corresponds to the position of the drive board 1421 and the power board 1422 along the width direction of the housing 100, and the position of the rectifier bridge 1411 corresponds to the position of the inverter module 1423 along the width direction of the housing 100, so that the main structure of the rectifier assembly 141 and the inverter assembly 142 is more reasonable in layout, and the volume of the inverter 10 is greatly reduced in width.

[0069] Reference Figures 1 to 8 Optionally, in an embodiment of the present utility model, the air duct 120 has an air inlet 121 and an air outlet 122, and the heat dissipation component 130 includes:

[0070] The mounting plate 131 is disposed in the air duct 120 and located on one side of the frequency conversion body 140;

[0071] The fan 132 is disposed on the mounting plate 131 and is arranged toward the air inlet 121 . The fan 132 is located between the mounting plate 131 and the frequency conversion body 140 , and is electrically connected to the control component 143 .

[0072] In this embodiment, the air duct 120 formed by the mounting frame 110 has an air inlet 121 and an air outlet 122. The air inlet 121 is arranged near the heat dissipation assembly 130 relative to the frequency conversion body 140 and is arranged toward the heat dissipation assembly 130; the air outlet 122 is arranged near the frequency conversion body 140 relative to the heat dissipation assembly 130 and is arranged toward the frequency conversion body 140.

[0073] In this embodiment, the heat dissipation assembly 130 includes a mounting plate 131 and a fan 132. The mounting plate 131 is arranged in the air duct 120 and is spaced apart from the frequency conversion body 140 along the height direction of the housing 100. Optionally, the length direction of the mounting plate 131 intersects with the length direction of the mounting frame 110. Preferably, the length direction of the mounting plate 131 is perpendicular to the length direction of the mounting frame 110. Optionally, a plurality of fans 132 are provided, and the plurality of fans 132 are arranged in sequence on the mounting plate 131 along the thickness direction of the housing 100 and are arranged toward the air inlet 121. The plurality of fans 132 are located between the mounting plate 131 and the frequency conversion body 140, and are electrically connected to the control assembly 143. With such arrangement, the heat generated by power components such as the rectifier component 141, the inverter component 142 and the control component 143 of the frequency conversion body 140 during operation can be dissipated through the fan 132 on the mounting plate 131 and discharged to the external environment through the air outlet 122, thereby achieving heat dissipation of the frequency conversion body 140.

[0074] Reference Figure 1 Optionally, in an embodiment of the present utility model, the frequency converter 10 further includes:

[0075] The display operation component 150 is disposed in the housing 100 and is electrically connected to the control component 143 to provide an interactive operation interface for the user.

[0076] In this embodiment, the display operation component 150 can be implemented by a display screen with an operation keyboard. The display screen with an operation keyboard is installed on the housing 100 and is electrically connected to the control component 143. It is mainly used to provide an interactive operation interface for the user, so that the user can input information and operate the inverter 10 through the operation interface, and the inverter 10 provides information to the user through the operation interface for analysis and judgment of the working condition of the inverter 10.

[0077] Optionally, in an embodiment of the present invention, the display operation assembly 150 is detachably connected to the housing 100, so that when the display operation assembly 150 is damaged during long-term operation, it is easy to replace.

[0078] Reference Figure 1 Optionally, in an embodiment of the present utility model, the inverter 10 further includes a caster assembly 160 , wherein the caster assembly 160 is disposed on the housing 100 , and the caster assembly 160 is used to transport the inverter 10 .

[0079] In this embodiment, the caster assembly 160 can be implemented by using a universal caster. There are four universal casters, which are respectively arranged at four corners of the housing 100 and are mainly used for users to transport the frequency converter 10 of this embodiment.

[0080] Reference Figure 1 and Figure 7 Optionally, in an embodiment of the present utility model, the inverter 10 further includes a lifting assembly 170 , and the lifting assembly 170 is disposed on the housing 100 , and the lifting assembly 170 is used for a user to hold and lift the inverter 10 .

[0081] In this embodiment, the lifting assembly 170 is implemented by a handle, and the specific structure of the handle is not particularly limited. The handle is installed in the middle of the housing 100 and is mainly used for the user to hold and lift the inverter 10 of this embodiment to install the inverter 10 in the cabinet.

[0082] Reference Figure 1 Optionally, in an embodiment of the present utility model, the inverter 10 further includes a lifting ring assembly 180 , and the lifting ring assembly 180 is disposed on the housing 100 , and the lifting ring assembly 180 is used to connect with a lifting hook of a lifting assembly to lift the inverter 10 .

[0083] In this embodiment, the lifting ring assembly 180 is implemented by a lifting ring, and the specific structure of the lifting ring is not particularly limited here. The lifting ring is installed at the top position of the housing 100, and is mainly used to be hooked with the lifting hook of the lifting assembly to lift the inverter 10 of this embodiment, so as to place the inverter 10 on the handling equipment, so as to facilitate the transportation and use of the inverter 10.

[0084] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A frequency converter, characterized in that: include: case; A mounting frame is arranged in the shell, the mounting frame forms an air duct, and the mounting frame has a plurality of mounting positions arranged adjacent to each other in the air duct along the circumference of the shell; A heat dissipation component is arranged in the air duct; as well as The frequency conversion body is arranged in the air duct and is located on one side of the heat dissipation component in the height direction of the shell; the frequency conversion body includes a rectifier component, an inverter component and a control component, and the rectifier component, the inverter component and the control component are each arranged in one of the installation positions.

2. The frequency converter according to claim 1, characterized in that: The position of the frequency conversion body corresponds to the position of the heat dissipation component along the height direction of the shell.

3. The frequency converter according to claim 1, characterized in that: The multiple mounting positions include a first mounting position, a second mounting position and a third mounting position, wherein the first mounting position and the second mounting position are arranged opposite to each other along the width direction of the shell; the rectifier component is arranged in the first mounting position, the inverter component is arranged in the second mounting position, and the control component is arranged in the third mounting position.

4. The frequency converter according to claim 3, characterized in that: The rectifier assembly includes a rectifier bridge and a discharge resistor, and the discharge resistor and the rectifier bridge are arranged side by side along the height direction of the shell.

5. The frequency converter according to claim 3, characterized in that: The inverter assembly includes a drive board, a power board and an inverter module. The drive board and the power board are arranged side by side along the thickness direction of the shell, and the inverter module and the drive board are arranged side by side along the height direction of the shell.

6. The frequency converter according to claim 3, characterized in that: The rectifier assembly includes a rectifier bridge and a discharge resistor, and the discharge resistor and the rectifier bridge are arranged side by side along the height direction of the housing; The inverter assembly includes a drive board, a power board and an inverter module, wherein the drive board and the power board are arranged side by side along the thickness direction of the shell, and the inverter module and the drive board are arranged side by side along the height direction of the shell; The position of the discharge resistor corresponds to the positions of the drive board and the power board along the width direction of the housing, and the position of the rectifier bridge corresponds to the position of the inverter module along the width direction of the housing.

7. The frequency converter according to claim 1, characterized in that: The air duct has an air inlet and an air outlet, and the heat dissipation component includes: A mounting plate is arranged in the air duct and located on one side of the frequency conversion body; A fan is arranged on the mounting plate and is disposed toward the air inlet. The fan is located between the mounting plate and the frequency conversion body and is electrically connected to the control component.

8. The frequency converter according to claim 1, characterized in that: The frequency converter also includes: The display operation component is arranged on the housing and is electrically connected to the control component, and is used to provide an interactive operation interface for the user.

9. The frequency converter according to claim 8, characterized in that: The display operation assembly is detachably connected to the housing.

10. The frequency converter according to claim 1, characterized in that: The frequency converter further comprises a caster assembly, which is arranged on the housing and is used for transporting the frequency converter; And / or, the frequency converter further comprises a lifting component, the lifting component is arranged on the housing, and the lifting component is used for a user to hold and lift the frequency converter; And / or, the frequency converter further comprises a lifting ring assembly, wherein the lifting ring assembly is arranged on the housing, and the lifting ring assembly is used to be connected to a lifting hook of a lifting assembly to lift the frequency converter.

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