Frequency converter and elevator

Abstract

The utility model discloses a frequency converter and elevator relates to frequency converter technical field, and frequency converter includes: main shell, the main shell includes front board part and is located in the side plate part of front board part both sides, and the front board part and two side plate parts surround and form the heat dissipation channel, and the heat dissipation channel vertical direction is equipped with radiator device holding area and electronic device holding area, and the radiator device holding area is installed with the heat dissipation assembly, drive module, the drive module includes drive board and filter circuit board, drive board is located in the side surface of front board part is away from electronic device holding area, and filter circuit board is with the mode perpendicular to drive board vertical and is equipped with in electronic device holding area and directly with drive board electricity is connected. The utility model discloses technical scheme, has reduced the volume of frequency converter.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, and in particular to a frequency converter and an elevator. Background Technology

[0002] Frequency converters are widely used in elevator control, industrial automation, and other fields. Their main structure includes drive circuits, input rectifier circuits, output inverter circuits, filter circuits, braking / rescue circuits, power supply circuits, main control circuits (including DSP / MCU), STO safety circuits, encoder interfaces, and display modules. To facilitate modular design, production, and maintenance, existing products typically distribute these functional circuits across multiple printed circuit boards, which are then assembled using connectors, cables, or structural components to achieve inter-board interconnection. However, the layout of components in existing frequency converters is unreasonable, occupying a large amount of space and resulting in a large overall size. Utility Model Content

[0003] The main purpose of this utility model is to provide a frequency converter and an elevator, which aims to reduce the size of the frequency converter.

[0004] To achieve the above objectives, this utility model provides a frequency converter, which includes: The main shell includes a front panel and side panels on both sides of the front panel. The front panel and the two side panels form a heat dissipation channel. The heat dissipation channel has a heat dissipation device accommodating area and an electronic device accommodating area in the vertical direction. A heat dissipation component is installed in the heat dissipation device accommodating area. The drive module includes a drive board and a filter circuit board; The driving board is located on the side surface of the front panel facing away from the electronic device accommodating area, and the filter circuit board is vertically inserted into the electronic device accommodating area and directly electrically connected to the driving board.

[0005] In one embodiment, the driving module further includes an output circuit integrated into the driving board.

[0006] In one embodiment, the filter circuit board is soldered to the driver board using solder fingers.

[0007] In one embodiment, the driving module further includes a capacitor disposed on one side of the driving board and electrically connected to the driving board, the capacitor passing through the front panel and housed in the electronic device housing area, and the filter circuit board being arranged side by side with the capacitor.

[0008] In one embodiment, the front panel further includes a limiting structure protruding into the electronic device accommodating area, the limiting structure being provided with a guide groove, through which the filter circuit board is vertically inserted into the electronic device accommodating area.

[0009] In one embodiment, the driving module further includes an output circuit, which is independently formed on an output circuit board. The output circuit board is vertically disposed in the electronic device accommodating area and directly electrically connected to the driving board.

[0010] In one embodiment, the driving module further includes a capacitor disposed on one side of the driving board and electrically connected to the driving board. The capacitor passes through the front panel and is housed in the electronic device housing area. The filter circuit board is arranged side by side with the capacitor, or both the filter circuit board and the output circuit board are arranged side by side with the capacitor.

[0011] In one embodiment, the front panel further includes a limiting structure protruding into the electronic device accommodating area, the limiting structure being provided with a guide groove, through which the output circuit board is vertically inserted into the electronic device accommodating area.

[0012] In one embodiment, the drive module further includes a power module electrically connected to the drive board, the front panel has a power module accommodating area, the power module is disposed in the power module accommodating area and is attached to the heat dissipation component.

[0013] In one embodiment, the heat dissipation assembly includes a heat sink and a cooling fan disposed above the heat sink, wherein the heat sink is disposed in close contact with the power module.

[0014] In one embodiment, the frequency converter further includes a control component, which includes a main control board, a bottom core circuit board electrically connected to the main control board, and a system core circuit board electrically connected to the main control board. The bottom core circuit board and the system core circuit board are respectively stacked on the main control board.

[0015] In one embodiment, the control component further includes a PG card circuit board, which is stacked on the system core circuit board and electrically connected to the main control board.

[0016] In one embodiment, the main control board and the drive board are electrically connected via pin headers and busbars; and / or, the PG card circuit board is electrically connected to the main control board via pin headers and busbars.

[0017] In one embodiment, the control assembly further includes a fan adapter plate disposed on the front panel, the fan adapter plate being electrically connected to the main control board.

[0018] In one embodiment, the fan adapter plate and the front panel are fixedly connected by a snap-fit ​​structure; and / or, the fan adapter plate and the main control board are electrically connected by a connector.

[0019] In one embodiment, the frequency converter further includes a sub-house located on the side of the front panel opposite to the electronic device housing area, and the control components are mounted on the sub-house.

[0020] In one embodiment, a display module and a button module are electrically connected to the fan adapter board, and the frequency converter also includes a front cover, which covers the sub-shell, and the display module and the button module are exposed on the front cover.

[0021] In one embodiment, power terminals are provided on the drive board, the filter circuit board, and the PG card circuit board, and functional terminals are obliquely provided on the main control board. The power terminals are exposed at the bottom of the main housing, and the functional terminals are exposed at the front cover.

[0022] In one embodiment, the main control board is provided with a network port terminal and a USB terminal, the front cover has an opening and is provided corresponding to the network port terminal and the USB terminal, the opening is provided with an end cover, and the end cover and the front cover are movably connected to open or close the opening.

[0023] In one embodiment, the width and thickness of the frequency converter are between 100mm and 120mm, respectively, and the height of the frequency converter is between 300mm and 350mm.

[0024] To achieve the above objectives, this application also proposes an elevator, which is provided with an elevator door frame, and the elevator includes the frequency converter described above, with the frequency converter installed inside the elevator door frame.

[0025] The technical solution of this application utilizes an independent filter circuit board as the filtering circuit, vertically inserted into the electronic component housing area within the heat dissipation channel. This fully utilizes the heat dissipation channel, which was originally only used for airflow, reducing the stacked thickness of the filter circuit and drive board, effectively saving the overall space occupied by the circuit board. This results in a more three-dimensional and compact overall structure, effectively reducing the overall size of the inverter and meeting the design requirements of miniaturization and high power density. Moreover, the vertical insertion of the filter circuit board reduces the adverse impact on airflow, ensuring the heat dissipation effect of the heat dissipation components on heat-generating devices. In addition, the filter circuit board is directly electrically connected to the drive board, eliminating the need for additional connecting cables, complex brackets, or adapter boards. This further reduces the overall size of the inverter, decreases assembly steps, improves production efficiency, and facilitates modular replacement and maintenance in the future. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the frequency converter of this utility model; Figure 2 for Figure 1 A schematic diagram of the exploded structure; Figure 3 for Figure 1 Exploded view of the drive module; Figure 4 This is a schematic diagram of another embodiment of the frequency converter of this utility model; Figure 5 for Figure 4 A schematic diagram of the exploded structure; Figure 6 for Figure 4 Exploded view of the drive module; Figure 7 This is another exploded structural diagram of an embodiment of the frequency converter of this utility model; Figure 8 for Figure 1 Exploded view of the control component; Figure 9 This is a schematic diagram of the main housing at one angle in an embodiment of the frequency converter of this utility model; Figure 10 for Figure 9 A magnified schematic diagram of part A in the middle section; Figure 11 This is a three-dimensional structural diagram of an embodiment of the frequency converter of this utility model from one angle; Figure 12 This is a three-dimensional structural diagram of an embodiment of the inverter of this utility model, wherein the output circuit is integrated into the drive board; Figure 13 This is a three-dimensional structural diagram of an embodiment of the inverter of this utility model, wherein the output circuit is independently formed on the output circuit board; Figure 14 This is a schematic diagram of the main housing from another angle in an embodiment of the frequency converter of this utility model.

[0028] Explanation of icon numbers: 100. Main shell; 110. Front panel; 111. Through hole; 112. Extension; 120. Side panel; 130. Heat dissipation channel; 131. Power module housing area; 140. Ventilation window; 200. Drive module; 210. Drive board; 220. Filter circuit board; 230. Capacitor; 240. Output circuit board; 250. Power module; 300. Limiting structure; 310. Limiting groove; 400. Heat dissipation assembly; 410. Heat sink; 420. Cooling fan; 500. Sub-shell; 600. Control assembly; 610. Main control board; 620. Bottom core circuit board; 630. System core circuit board; 640. PG card circuit board; 650. Fan adapter board; 660. Display module; 670. Button module; 700. Front cover; 710. End cover; 810. Power terminal; 820. Function terminal.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in the embodiments of this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the embodiments of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by the embodiments of this utility model.

[0035] Existing frequency converters cannot fully utilize idle space during assembly, resulting in a large assembled size. In view of this, this utility model provides a frequency converter and elevator that uses an independent filter circuit board as the filtering circuit, vertically mounted within the electronic component housing area of ​​the heat dissipation channel. This fully utilizes the heat dissipation channel, which was originally only used for airflow, reducing the stacked thickness of the filter circuit and drive board, effectively saving the overall space occupied by the circuit board. This makes the overall structure more three-dimensional and compact, effectively reducing the overall size of the frequency converter and meeting the design requirements of miniaturization and high power density.

[0036] The frequency converter in this embodiment is applied to elevators. Of course, it can also be used in other industrial control fields, and is not limited here.

[0037] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0038] like Figures 1 to 3 As shown in the figure, this utility model embodiment proposes a frequency converter, the frequency converter comprising: The main housing 100 includes a front panel 110 and side panels 120 located on both sides of the front panel 110. The front panel 110 and the two side panels 120 form a heat dissipation channel 130. Optionally, the side panels 120 and the front panel 110 can be integrally formed or assembled separately; this is not limited here. Specifically, the front panel 110 and the side panels 120 can be made of plastic or rubber, which is low in cost and also has a certain insulating effect. The heat dissipation channel 130 allows for airflow to dissipate heat from heat-generating components. The heat dissipation channel 130 has a heat dissipation component housing area and an electronic component housing area arranged vertically. A heat dissipation assembly 400 is installed in the heat dissipation component housing area. It can be understood that dividing the heat dissipation channel 130 into different sections allows for the separate installation of different components without interference, making disassembly and assembly more convenient. The driving module 200 includes a driving board 210 and a filter circuit board 220. The driving board 210 is disposed on the surface of the front panel 110 facing away from the electronic device accommodating area. The filter circuit board 220 is vertically inserted into the electronic device accommodating area and directly electrically connected to the driving board 210. In other words, in this embodiment, the filter circuit board 220 extends vertically within the electronic device accommodating area and is thus vertically inserted into it. It is understood that the filter circuit board 220 and the driving board 210 are perpendicular to each other and directly electrically connected, which makes full use of the space in the electronic device accommodating area. Furthermore, the direct electrical connection between the driving board 210 and the filter circuit board 220 eliminates the need for connecting cables or other electrical connection devices or adapter boards, further reducing the size.

[0039] In this embodiment, an independent filter circuit board 220 is used as the filter circuit and is vertically installed within the electronic component housing area of ​​the heat dissipation channel 130. This fully utilizes the heat dissipation channel 130, which was originally only used for airflow, reducing the stacked thickness of the filter circuit and the drive board 210. This effectively saves the overall space occupied by the circuit board, making the overall structure layout more three-dimensional and compact, effectively reducing the overall size of the inverter, and meeting the inverter's design requirements for miniaturization and high power density. Moreover, the vertical installation of the filter circuit board 220 reduces the adverse effects on the heat dissipation airflow and protects the heat dissipation components. The heat dissipation effect of 400 heat-generating components is improved. In addition, the filter circuit board 220 is directly electrically connected to the drive board 210 by a vertical plug-in method, without the need for additional connecting cables, complex brackets or adapter boards. This reduces assembly steps, improves production efficiency, facilitates modular replacement and maintenance in the later stage, and further reduces the overall size of the frequency converter.

[0040] In one embodiment of this utility model, the drive module 200 further includes an output circuit, which is integrated into the drive board 210. The output circuit is used to connect to the motor to supply power to the motor. It is understood that integrating the output circuit into the drive board 210 reduces the space occupied by the heat dissipation channel 130; that is, the output circuit does not occupy the space of the electronic device housing area, allowing for greater airflow and timely heat dissipation, thus improving heat dissipation. In this embodiment, the overall width, thickness, and height of the inverter are 100 mm, 100 mm, and 320 mm, respectively, meaning the inverter's volume is 100 mm * 100 mm * 320 mm = 3.2 cubic decimeters. The inverter has a narrow overall shape for better installation within the narrow elevator door frame.

[0041] In one embodiment of this utility model, the filter circuit board 220 and the driver board 210 are soldered together using solder fingers. This direct soldering interconnects the filter circuit board 220 and the driver board 210, replacing traditional board-to-board connectors, ribbon cables, or adapter boards, saving costs and assembly space, further reducing the gap between boards, and making the entire device more compact.

[0042] In one embodiment of this utility model, reference is made to Figures 1 to 3 and Figure 14 The driving module 200 further includes a capacitor 230 disposed on one side of the driving plate 210 and electrically connected to the driving plate 210. The capacitor 230 passes through the front plate portion 110 and is housed in the electronic device housing area. Specifically, the driving plate 210 is fixed to the front plate portion 110, and the front plate portion 110 is provided with a through hole 111. The capacitor 230 passes through the through hole 111 and is housed in the electronic device housing area. Optionally, an extension portion 112 protrudes along the periphery of the through hole 111. The extension portion 112 abuts against the capacitor 230, providing support for the capacitor 230 and improving the reliability of the fixation.

[0043] Furthermore, the filter circuit board 220 and the capacitor 230 are arranged side by side, which can make greater use of the electronic device housing area, maximize the use of the heat dissipation channel 130, reduce the volume of the driver board 210, and thus reduce the overall structural volume.

[0044] In one embodiment of this utility model, reference is made to Figure 9 and Figure 10The front panel 110 of the inverter also includes a limiting structure 300 protruding into the electronic device accommodating area. The limiting structure 300 is provided with a guide groove 310, through which the filter circuit board 220 is vertically inserted into the electronic device accommodating area. This restricts the direction of the filter circuit board 220 during insertion, ensuring it is inserted along a predetermined path, thereby improving the accuracy of the connection between the filter circuit board 220 and the drive board 210. Specifically, during the insertion of the filter circuit board 220, the guide groove 310 can assist in the insertion of the filter circuit board 220. The guide structure 300 assists in guiding the filter circuit board 220 to be inserted along a predetermined trajectory, limiting its movement deviation. Additionally, the limiting structure 300, located on the front panel 110, can serve as a reinforcing rib, thereby increasing the strength of the housing. Optionally, multiple limiting structures 300 can be provided vertically, each with a guide groove 310 to simultaneously guide the filter circuit board 220 at multiple positions, preventing it from swaying left and right during insertion.

[0045] In one embodiment of this utility model, reference is made to Figures 4 to 6 The drive module 200 also includes an output circuit, which is independently formed on an output circuit board 240. The output circuit board 240 is vertically installed in the electronic device housing area perpendicular to the drive board 210 and is directly electrically connected to the drive board 210. In other words, in this embodiment, the output circuit board 240 extends vertically within the electronic device housing area and is vertically installed there. By independently setting the output circuit on an output circuit board 240 and installing it in the electronic device housing area, the utilization rate of the heat dissipation channel 130 can be further improved, effectively saving the overall space occupied by the circuit board, making the overall structure layout more three-dimensional and compact, effectively reducing the overall size of the inverter, and meeting the inverter's design requirements for miniaturization and high power density. Furthermore, the direct electrical connection between the drive board 210 and the output circuit board 240 eliminates the need for connecting cables or other electrical connection devices or adapter boards, further reducing the size. In this embodiment, the inverter's overall dimensions are 100 mm in width, 100 mm in thickness, and 300 mm in height, meaning its volume is 100 mm * 100 mm * 300 mm = 3 cubic decimeters. The inverter has a slim profile for better installation within the narrow elevator door frame.

[0046] Optionally, the output circuit board 240 and the driver board 210 are soldered together using solder fingers. This direct soldering interconnects the output circuit board 240 and the driver board 210, replacing traditional board-to-board connectors, ribbon cables, or adapter boards. This saves cost and assembly space, further reduces the gap between boards, and makes the entire device more compact.

[0047] In one embodiment of this utility model, reference is made to Figures 4 to 6 The driving module 200 further includes a capacitor 230 disposed on one side of the driving board 210 and electrically connected to the driving board 210. The capacitor 230 passes through the front panel portion 110 and is housed in the electronic device housing area. Specifically, refer to... Figure 14 The drive board 210 is fixed to the front plate portion 110, which has a through hole 111 through which the capacitor 230 passes and is housed in the electronic device housing area. Optionally, an extension portion 112 protrudes along the periphery of the through hole 111, which abuts against the capacitor 230, providing support for the capacitor 230 and improving the reliability of the fixation.

[0048] Furthermore, the filter circuit board 220 and the capacitor 230 are arranged side by side, or both the filter circuit board 220 and the output circuit board 240 are arranged side by side with the capacitor 230. It is understood that arranging the capacitor 230 and the filter circuit board 220 side by side in the electronic device housing area, or arranging the output circuit board 240, the filter circuit board 220, and the capacitor 230 side by side in the electronic device housing area, can make greater use of the electronic device housing area, maximize the utilization of the heat dissipation channel 130, reduce the volume of the driver board 210, and thus reduce the overall structural volume.

[0049] Optionally, when the output circuit is independently formed on the output circuit board 240, the filter circuit board 220, the output circuit board 240, and the capacitor 230 are stacked in the arrangement direction of the two side plates 120. In this way, airflow gaps exist between the filter circuit board 220 and the capacitor 230, and between the output circuit board 240 and the filter circuit board 220, and these airflow gaps are directed towards the heat dissipation assembly 400. This ensures normal airflow for heat dissipation, promptly removes heat from the heat-generating components, and improves the heat dissipation effect.

[0050] In one embodiment of this utility model, reference is made to Figure 14The front panel 110 of the inverter also includes a limiting structure 300 protruding into the electronic component accommodating area. The limiting structure 300 has a guide groove 310 through which the output circuit board 240 is vertically inserted into the electronic component accommodating area. This restricts the direction of the output circuit board 240 during insertion, ensuring it is inserted along a predetermined path and improving the accuracy of the connection between the output circuit board 240 and the drive board 210. Specifically, during the insertion of the output circuit board 240, the guide groove 310 provides auxiliary guidance, ensuring it is inserted along a predetermined trajectory and limiting any deviation in its movement. Furthermore, the limiting structure 300, located on the front panel 110, can serve as a reinforcing rib, increasing the strength of the housing. Optionally, multiple limiting structures 300 are provided in the vertical direction, and each limiting structure 300 is provided with a guide groove 310 to simultaneously guide the output circuit board 240 at multiple positions, preventing the output circuit board 240 from swinging left and right during insertion. In one embodiment, two rows of limiting structures 300 protrude from the surface of the front panel portion 110 toward the electronic device accommodating area. The two rows of limiting structures 300 are arranged side by side, and each of the two rows of parallel limiting structures 300 is provided with a guide groove 310. The guide groove 310 on one row of limiting structures 300 can be used to guide the insertion of the output circuit board 240, and the guide groove 310 on the other row of limiting structures 300 can be used to guide the insertion of the filter circuit board 220. In this way, by using the guide grooves 310 on the two rows of parallel limiting structures 300, the filter circuit board 220 and the output circuit board 240 can be guided separately during insertion, improving insertion efficiency.

[0051] In one embodiment of this utility model, reference is made to Figure 2 , Figure 5 , Figure 9 as well as Figure 14 The drive module 200 further includes a power module 250 electrically connected to the drive board 210. A power module receiving area 131 is provided on the front panel 110, and the power module 250 is disposed in the power module receiving area 131 and is in contact with the heat dissipation assembly 400. Specifically, the power module receiving area 131 is located on the front panel 110 facing the heat dissipation channel. The power module housing 130 has a surface that is connected to the heat dissipation channel 130. Since the power module housing 131 and the heat dissipation channel 130 are connected, the heat dissipation effect of the power module 250 can be improved using the heat dissipation channel 130. Additionally, the space in the thickness direction of the front panel 110 can be utilized, thereby reducing the overall volume. Furthermore, the heat dissipation component 400 and the power module 250 are in direct physical contact, eliminating the need for intermediate adapter plates or stacked heat-conducting components, significantly reducing thermal resistance, enabling rapid heat dissipation, and improving the heat dissipation effect of the power module 250. Specifically, the power module 250 is an IGBT, which can be fixed to the drive board 210 by soldering. Optionally, the power module 250 and the capacitor 230 are located on the same side of the drive board 210, and heat dissipation using the heat dissipation channel 130 can simultaneously improve the heat dissipation effect of both the power module 250 and the capacitor 230.

[0052] In one embodiment of this utility model, reference is made to Figure 2 and Figure 5 The heat dissipation assembly 400 includes a heat sink 410 and a cooling fan 420 disposed above the heat sink 410. The heat sink 410 is disposed in close contact with the power module 250. Thus, the cooling fan 420 can provide overall ventilation and heat dissipation for each circuit board module, reducing the complexity of the heat dissipation structure and further reducing the overall size. Moreover, the cooling fan 420 can also dissipate heat from the heat sink 410, improving the heat exchange efficiency of the heat sink 410 and the power module 250, thereby enhancing the heat dissipation effect. Optionally, the cooling fan 420 is an intake fan, which can draw out hot air from the heat dissipation channel 130, allowing cool air from the outside to flow into the heat dissipation channel 130, thereby achieving heat dissipation for the heat-generating components. In one embodiment, the cooling fan 420 is disposed at the top of the heat dissipation channel 130, so that air can be drawn in from the top, cool air is drawn in from the bottom, and hot air is blown out from the top, achieving heat dissipation for the heat-generating components.

[0053] In one embodiment of this utility model, reference is made to Figure 2 , Figure 5 , Figure 7 as well as Figure 8The frequency converter also includes a control component 600, which includes a main control board 610, a bottom core circuit board 620 electrically connected to the main control board 610, and a system core circuit board 630 electrically connected to the main control board 610. The bottom core circuit board 620 and the system core circuit board 630 are respectively laid flat on the main control board 610. Specifically, the bottom core circuit board 620 is used to implement motor control functions (e.g., by sampling the output current and bus voltage, vector control is used to precisely adjust the motor's excitation and torque to ensure that the motor output torque quickly matches the load demand and to implement related drive protection functions, i.e., DSP functions) and elevator operation safety control functions (e.g., to implement the elevator's safe torque shutdown function, i.e., STO function), ensuring the safe operation of the elevator. The system core circuit board 630 is used to implement some logic control functions for elevator operation (e.g., to implement control functions such as the elevator traction machine driving the car to rise, fall, and level). In this embodiment, the bottom core circuit board 620 and the system core circuit board 630 are separated into small boards and laid flat on the main control board 610 respectively, which meets the requirements of small-volume modular circuit design and thus reduces the overall volume.

[0054] Optionally, the frequency converter further includes a secondary housing 500, which is disposed on the front panel portion 110. On the side opposite to the electronic device housing area, the sub-shell 500 is used to mount the control component 600, that is, the control component 600 is mounted in the sub-shell 500. The sub-shell 500 is embedded in the front end of the main shell 100, which allows the control component 600 and the drive module 200 to share the cooling fan 420 for heat dissipation and cooling, further simplifying the heat dissipation structure.

[0055] In one embodiment of this utility model, reference is made to Figure 7 The control component 600 also includes a PG card circuit board 640, which is stacked on the system core circuit board 630 and electrically connected to the main control board 610. Specifically, the PG card circuit board 640 can be used to connect an encoder to achieve precise control of the elevator's motor speed and position. Thus, by stacking the PG card circuit board 640 on the system core circuit board 630, a compact three-dimensional stacked structure of the control layer is formed, avoiding planar expansion layout on the main control board 610. The overall outline is smaller, further reducing space occupation and making the entire machine more compact.

[0056] In one embodiment of this utility model, the main control board 610 and the drive board 210 are electrically connected via pin headers and female headers. Specifically, the pin headers and female headers are standard pluggable structures, allowing the main control board 610 and the drive board 210 to be manufactured, tested, repaired, or upgraded independently without the need for overall resoldering or disassembly of the entire machine, thus reducing after-sales maintenance costs and achieving safe electrical isolation between the control side and the drive side, reducing crosstalk; and / or, the PG card circuit board 640 is electrically connected to the main control board 610 via pin headers and female headers, which facilitates maintenance and reduces maintenance costs.

[0057] In one embodiment, the PG card circuit board 640 is fixed to the main control board 610 by studs. The height of the studs is greater than the overall height of the system core circuit board 630. It can be understood that the studs can support and fix the PG card circuit board 640 on the one hand, and reserve assembly space for the installation of the system core circuit board on the other hand.

[0058] In one embodiment of this utility model, reference is made to Figure 7 The control component 600 further includes a fan adapter plate 650 disposed on the front panel 110, which is electrically connected to the main control board 610. Thus, the operation of the cooling fan 420 can be controlled via the fan adapter plate 650. Specifically, the fan adapter plate 650 is positioned close to the cooling fan 420 and interconnected with the main control board 610, enabling it to receive power.

[0059] In one embodiment of this utility model, the fan adapter plate 650 and the front plate 110 are fixedly connected by a snap-fit ​​structure. The snap-fit ​​fixing method makes the structure simpler and the disassembly and assembly more convenient. And / or, the fan adapter plate 650 and the main control board 610 are electrically connected by a connector, which can avoid the use of cables, reduce costs, and make assembly easier.

[0060] In one embodiment of this utility model, reference is made to Figure 7 and Figure 12 The fan adapter board 650 is electrically connected to a display module 660 and a button module 670, which can better realize integrated functions and further improve space utilization.

[0061] Optionally, refer to Figure 11 and Figure 12The inverter also includes a front cover 700, which covers the sub-shell 500. The sub-shell 500 has a mounting opening on its side facing away from the main shell 100, and the front cover 700 covers this mounting opening. The display module 660 and the button module 670 are exposed on the front cover 700. Specifically, the display module 660 and the button module 670 are concentrated on the front of the front cover 700, allowing users to directly view operating parameters, fault codes, and perform parameter settings or start / stop operations without disassembling the unit, improving ease of use and interaction efficiency. Furthermore, the front cover 700 is independently installed at the mounting opening, eliminating the need to disassemble the sub-shell 500, facilitating the replacement, cleaning, or functional upgrade of the internal circuit boards and reducing maintenance costs. Optionally, the front cover 700 and the sub-shell 500 can be snap-fitted or screwed together; this is not limited to this method.

[0062] In one embodiment of this utility model, reference is made to Figure 12 The drive board 210, the filter circuit board 220 and the PG card circuit board 640 are provided with power terminals 810, and the main control board 610 is provided with functional terminals 820 at an angle. The power terminals 810 are exposed at the bottom of the main shell 100, and the functional terminals 820 are exposed at the front cover 700.

[0063] Specifically, the power terminal 810 is electrically connected to the driver board 210, the filter circuit board 220, and the PG card circuit board 640, and the function terminal 820 is electrically connected to the main control board 610. The power terminal 810 and the function terminal 820 are exposed, allowing for quick wiring operations without disassembling the housing, significantly shortening equipment installation and debugging time and improving wiring efficiency.

[0064] In another embodiment, the output circuit board 240 is provided with a power terminal 810, which is electrically connected to the output circuit board 240.

[0065] Specifically, refer to Figure 12 When the output circuit is integrated into the drive board 210, the drive board 210, the filter circuit board 220 and the PG card circuit board 640 are respectively provided with power terminals 810. The power terminals 810 are exposed at the bottom of the inverter to improve the convenience of wiring. The main control board 610 is provided with function terminals 820. The function terminals 820 are exposed on the front cover 700 of the main housing 100 and are obliquely inserted through the front cover 700. In this way, the inverter can be placed in the elevator door frame without being moved out or the top cover needs to be removed to realize the plugging and unplugging of the corresponding terminals for maintenance.

[0066] Reference Figure 13When the output circuit is independently formed on an output circuit board 240, the drive board 210, filter circuit board 220, output circuit board 240 and PG card circuit board 640 are respectively provided with power terminals 810. The power terminals 810 are exposed at the bottom of the main housing 100 to improve the convenience of wiring. The main control board 610 is provided with function terminals 820. The function terminals 820 are exposed on the front cover 700 of the main housing 100 and are obliquely inserted through the front cover 700. In this way, the inverter can be placed in the elevator door frame without being moved out or the top cover needs to be removed to realize the plugging and unplugging of the corresponding terminals and maintenance.

[0067] In one embodiment of this utility model, reference is made to Figure 8 , Figure 12 and Figure 13 The main control board 610 is equipped with an Ethernet port terminal and a USB terminal. The front cover 700 has an opening corresponding to the Ethernet port terminal and the USB terminal. An end cover 710 is provided at the opening, and the end cover 710 and the front cover 700 are movably connected to open or close the opening. Thus, opening the end cover 710 allows for the insertion and removal of the Ethernet port terminal and the USB terminal, further improving the convenience and maintainability of the corresponding terminals. Optionally, the end cover 710 and the front cover 700 can be rotatably connected or slidably connected; this is not limited here.

[0068] In one embodiment of this utility model, reference is made to Figure 2 At least one side panel 120 is provided with a ventilation window 140. This allows for communication between the inside and outside, accelerates airflow, and improves heat dissipation. Specifically, a ventilation window 140 can be provided on one side panel 120 or on both side panel 120 simultaneously; this is not limited to this.

[0069] In one embodiment of this utility model, reference is made to Figure 11 The width and thickness of the frequency converter are between 100mm and 120mm, respectively, and the height of the frequency converter is between 300mm and 350mm. In this embodiment, the height of the frequency converter refers to the vertical height of the heat dissipation channel 130, the width of the frequency converter refers to the width of the two side plates 120 in the arrangement direction, and the thickness of the frequency converter refers to the thickness of the main housing 100 and the secondary housing 500 in the arrangement direction.

[0070] To achieve the above objectives, this utility model embodiment also proposes an elevator, which is equipped with an elevator door frame and includes the frequency converter described above, with the frequency converter installed inside the elevator door frame. Specifically, the specific structure of the frequency converter is as described in the above embodiments. Since this frequency converter adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0071] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model embodiments. Any equivalent structural transformations made under the technical concept of the present utility model using the description and drawings of the present utility model embodiments, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model embodiments.

Claims

1. A frequency converter, characterized in that, The frequency converter includes: The main shell includes a front panel and side panels on both sides of the front panel. The front panel and the two side panels form a heat dissipation channel. The heat dissipation channel has a heat dissipation device accommodating area and an electronic device accommodating area in the vertical direction. A heat dissipation component is installed in the heat dissipation device accommodating area. The drive module includes a drive board and a filter circuit board; The driving board is located on the side surface of the front panel facing away from the electronic device accommodating area, and the filter circuit board is vertically inserted into the electronic device accommodating area and directly electrically connected to the driving board.

2. The frequency converter as described in claim 1, characterized in that, The drive module also includes an output circuit, which is integrated into the drive board.

3. The frequency converter as described in claim 1, characterized in that, The filter circuit board and the driver board are soldered together using solder fingers.

4. The frequency converter as described in claim 1, characterized in that, The driving module also includes a capacitor disposed on one side of the driving board and electrically connected to the driving board. The capacitor passes through the front panel and is housed in the electronic device housing area. The filter circuit board is arranged side by side with the capacitor.

5. The frequency converter as described in claim 1, characterized in that, The front panel also includes a limiting structure that protrudes into the electronic device accommodating area. The limiting structure is provided with a guide groove, through which the filter circuit board is vertically inserted into the electronic device accommodating area.

6. The frequency converter as described in claim 1, characterized in that, The driving module also includes an output circuit, which is independently formed on an output circuit board. The output circuit board is vertically disposed in the electronic device accommodating area and directly electrically connected to the driving board.

7. The frequency converter as described in claim 6, characterized in that, The driving module also includes a capacitor disposed on one side of the driving board and electrically connected to the driving board. The capacitor passes through the front panel and is housed in the electronic device housing area. The filter circuit board is arranged side by side with the capacitor, or both the filter circuit board and the output circuit board are arranged side by side with the capacitor.

8. The frequency converter as described in claim 6, characterized in that, The front panel also includes a limiting structure that protrudes into the electronic device accommodating area. The limiting structure is provided with a guide groove, through which the output circuit board is vertically inserted into the electronic device accommodating area.

9. The frequency converter according to any one of claims 1 to 8, characterized in that, The drive module also includes a power module electrically connected to the drive board. The front panel has a power module housing area, and the power module is located in the power module housing area and is attached to the heat dissipation component.

10. The frequency converter as described in claim 9, characterized in that, The heat dissipation component includes a heat sink and a cooling fan disposed above the heat sink, wherein the heat sink is disposed in close contact with the power module.

11. The frequency converter according to any one of claims 1 to 8, characterized in that, The frequency converter also includes a control component, which includes a main control board, a bottom core circuit board electrically connected to the main control board, and a system core circuit board electrically connected to the main control board. The bottom core circuit board and the system core circuit board are respectively stacked on the main control board.

12. The frequency converter as described in claim 11, characterized in that, The control component also includes a PG card circuit board, which is stacked on the system core circuit board and electrically connected to the main control board.

13. The frequency converter as described in claim 12, characterized in that, The main control board and the drive board are electrically connected via pin headers and busbars; and / or, the PG card circuit board is electrically connected to the main control board via pin headers and busbars.

14. The frequency converter as described in claim 12, characterized in that, The control assembly also includes a fan adapter plate disposed on the front panel, the fan adapter plate being electrically connected to the main control board.

15. The frequency converter as described in claim 14, characterized in that, The fan adapter plate and the front panel are fixedly connected by a snap-fit ​​structure; and / or, the fan adapter plate and the main control board are electrically connected by a connector.

16. The frequency converter as described in claim 15, characterized in that, The inverter also includes a sub-casing, which is located on the side of the front panel facing away from the electronic device housing area, and the control components are mounted on the sub-casing.

17. The frequency converter as described in claim 16, characterized in that, The fan adapter board is electrically connected to a display module and a button module. The inverter also includes a front cover, which covers the sub-shell. The display module and the button module are exposed on the front cover.

18. The frequency converter as described in claim 17, characterized in that, The drive board, the filter circuit board, and the PG card circuit board are provided with power terminals, and the main control board is provided with functional terminals at an angle. The power terminals are exposed at the bottom of the main housing, and the functional terminals are exposed at the front cover.

19. The frequency converter as described in claim 18, characterized in that, The main control board is provided with a network port terminal and a USB terminal. The front cover has an opening and is provided with the network port terminal and the USB terminal. The opening is provided with an end cover. The end cover and the front cover are movably connected to open or close the opening.

20. The frequency converter as described in claim 1, characterized in that, The width and thickness of the frequency converter are between 100mm and 120mm respectively, and the height of the frequency converter is between 300mm and 350mm.

21. An elevator, wherein the elevator is provided with an elevator door frame, characterized in that, The elevator includes a frequency converter as described in any one of claims 1-20, and the frequency converter is installed inside the elevator door frame.

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