Online soft starter

Abstract

The utility model provides an on-line soft starter comprising a housing and a panel, the housing comprises three groups of heat radiation assemblies, a circuit board and a silicon controlled rectifier, the heat radiation assemblies comprise heat radiation members clamped on two sides of the silicon controlled rectifier in a left-right manner, one side of the heat radiation member corresponding to the panel is a front side, and the front side of the heat radiation member is provided with an installation chute. At least one end of the installation sliding groove is open, a fastening assembly used for being connected with the conducting strip is arranged in the installation sliding groove in a sliding mode, the conducting strip comprises a first connecting section connected with the fastening assembly and a second connecting section extending out of the shell, the shell comprises a machine body and a wiring side plate, the wiring side plate is detachably connected with the machine body, and a jack is formed in the wiring side plate. According to the technical scheme, the conducting strips are arranged at the same height and do not need to be bent, power consumption is reduced, production efficiency is high, precision is high, and assembling is convenient and rapid; an assembly space is reserved for the fan, so that the heat dissipation function is improved; the whole machine body rotates by 180 degrees, and switching of upper inlet and lower outlet or lower inlet and upper outlet is achieved.

Description

Technical Field

[0001] The utility model relates to the field of circuit equipment, in particular to an online soft starter. Background Art

[0002] A soft starter (also known as a soft starter) is a novel motor control device that integrates soft starting, soft stopping, light-load energy saving, and various protection functions. It is primarily composed of a three-phase phase-parallel thyristor connected in series between the power supply and the controlled motor, along with its electronic control circuit. The soft starter controls the conduction angle of its internal thyristor (SCR) to gradually increase the motor input voltage from zero according to a preset function until the start is complete and full voltage is applied to the motor. This is known as soft starting. During the soft starting process, the motor's starting torque and speed gradually increase. Existing soft starters include a housing with input and output pins. Within the housing are a heat sink assembly, a circuit board, and a current sensing transformer, SCR, and transformer electrically connected to the circuit board. The input and output pins are both connected to the SCR.

[0003] For example, the applicant applied for a built-in bypass soft starter on December 27, 2019. Although the position distribution of parts has been changed and thyristors are sandwiched between the upper and lower heat sinks to facilitate heat dissipation, three sets of heat dissipation components need to be accommodated in the shell. Different safety isolation spaces (about 15mm) are required between the heat dissipation components according to the power specifications of the soft starter. Therefore, high-power soft starters have the problem of being too large, and soft starters of different specifications also have the problem of not being able to use the same shell. At the same time, the existing soft starters use energy storage heat sinks, and frequent starting will cause overheating failures. At the same time, the existing conductive sheet needs to be punched at one end and connected to the heat dissipation component with bolts, and the other end needs to be connected to the input pin and output pin. Therefore, the conductive sheet needs to be bent multiple times. The following problems were found during production and use: First, the conductive sheet is easy to break due to bending, which affects its service life; second, there are processing problems with the bending angle, which is easy to produce errors and deviate from the first connection hole of the shell. Manual adjustment and reprocessing are required, and the processing efficiency is low; third, the conductive sheets connecting the input pins and output pins are of different shapes and cannot be used interchangeably, further increasing production costs; fourth, bending reduces the conductive current and power consumption is high; at the same time, according to different customer needs, the input pins and output pins have different situations such as top in and bottom out or bottom in and top out. The existing online soft starter can only choose specific types. Different needs make the soft starter not universal and have low applicability. The cost of manufacturers producing soft starters of multiple different specifications and types is also greatly increased. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide an online soft starter.

[0005] In response to the above problems, the following technical solutions are provided: an online soft starter, comprising a shell and a panel, the shell comprising three groups of heat dissipation components, a circuit board and a thyristor, the heat dissipation component comprising heat dissipation members clamped on both sides of the thyristor, the side of the heat dissipation member corresponding to the panel being the front side, the front side of the heat dissipation member being provided with a mounting slot, the mounting slot being open at least at one end, a fastening component for connecting a conductive sheet being slidingly provided in the mounting slot, the conductive sheet comprising a first connecting section connected to the fastening component and a second connecting section extending out of the shell, the first connecting section being provided with a first connecting hole, the second connecting section being provided with a second connecting hole, the shell comprising a body and a wiring side panel, the wiring side panel being detachably connected to the body, and the wiring side panel being provided with a jack for the second connecting section to extend out.

[0006] By adopting the above technical solution, compared with the existing conductive sheets that need to be bent and holes need to be punched on the side walls of the heat sink and then fixed with fasteners, the heat sink of the utility model is integrally formed, and no additional punching processing is required. The fastening component is slidably set in the installation slide groove. It is only necessary to align the first connecting hole with the fastening component and then operate the fastening component to achieve disassembly and assembly, which greatly improves the assembly efficiency. At the same time, compared with the existing conductive sheets that need to be connected to the upper heat sink and the lower heat sink respectively, the conductive sheets have inconsistent shapes and need to be bent. The technical solution of the utility model adopts left and right clamping of the heat sink, and the conductive sheets are all set above the installation slide groove and set at the same height, without bending, which greatly reduces the work caused by bending. Consumption, at the same time, the conductive sheet and the pin are integrally formed, with high stability, high strength and long service life, and the conductive sheet does not need to be bent, is integrally formed, has high production efficiency, high precision, and is convenient and quick to assemble; at the same time, the conductive sheet is arranged above the heat sink, and there is no need to connect from the bottom and then bend it, which reserves enough assembly space for the fan and greatly improves the heat dissipation function; at the same time, the wiring side plate is detachably connected to the body. Since the heat dissipation component in the body is modular, the conductive sheet connecting the input pins and the output pins has the same shape, so the entire body can be rotated 180 degrees, and then the upper wiring side plate and the lower wiring side plate can be disassembled and replaced to realize the switching of top-in and bottom-out or bottom-in and top-out, which greatly improves the applicability of the soft starter.

[0007] The utility model is further configured as follows: the mounting groove is in an inverted T-shape, the fastening assembly includes a bolt, the bolt includes a nut inverted in the mounting groove and a screw adapted to the first connecting hole, the screw passes through the first connecting hole and is threadedly connected to a nut arranged outside the heat sink.

[0008] By adopting the above technical solution, the installation slot is opened at least at one end (one end is open or both ends are open), the nut moves from the opening into the installation slot, and is thereby locked in the installation slot, and the screw passes through the first connecting hole and is threadedly connected to the nut provided outside the heat sink, thereby realizing the connection between the heat sink and the conductive sheet, and the assembly is simple and convenient.

[0009] The utility model is further configured that: the number of the first connecting holes is two.

[0010] By adopting the above technical solution, the stability of the connection is further enhanced.

[0011] The utility model is further provided with: the conductive sheet also includes a connecting portion connecting the first connecting segment and the second connecting segment, the first connecting hole is aligned with the mounting groove, the second connecting hole is arranged on the second connecting segment, the center line of the second connecting segment is aligned with the center line of the interval of the same group of heat dissipation components, the first connecting segment, the second connecting segment and the connecting portion are integrally formed and are at the same height.

[0012] By adopting the above technical solution, since each group of heat dissipation components has at least one input pin and one output pin, and the input pin and the output pin are respectively connected to the heat dissipation elements on both sides, the center line of the second connecting section is aligned with the center line of the interval between the heat dissipation elements in the same group (that is, the middle of the interval between the heat dissipation elements on the left and right sides), and the conductive sheet is arranged in a Z-shape, then the second connecting sections on both sides are arranged in the middle of the heat dissipation component, and the height positions of the jacks of the wiring side panels on both sides are aligned, then the wiring side panels and the conductive sheets on the upper and lower sides can be used interchangeably, further improving processing efficiency and facilitating assembly.

[0013] The present invention is further provided with: a sleeve for protecting the second connecting section is provided in the socket, the sleeve includes a main body, the main body is provided with a through hole adapted to the second connecting section, the outer side of the main body corresponding to the wiring side plate is provided with a protective protrusion for preventing water vapor and dust from entering, the protective protrusion is larger than the size of the socket, the outer side of the main body corresponding to the wiring side plate is provided with a gripping portion, the gripping portion is stepped and arranged between the protective protrusion and the outer wall of the wiring side plate, the inner side of the main body corresponding to the wiring side plate is provided with a clamping portion, and the wiring side plate is clamped between the clamping portion and the gripping portion.

[0014] By adopting the above technical solution, compared with the existing jacks which are mostly set up in a flat surface, water vapor and dust can easily enter the shell through the through hole, causing a short circuit in the conductive circuit. A protective protrusion is provided to prevent water vapor and dust from entering the shell, thereby improving the safety of the soft starter. At the same time, the ferrule adopts a snap-on connection, which is convenient and quick to install.

[0015] The utility model is further configured as follows: the heat dissipation components are divided into three groups, the number of the jacks on the wiring side panel is three, and the three jacks are arranged at the same height.

[0016] By adopting the above technical solution, the front and rear wiring side panels can be used interchangeably, which makes installation more convenient, is conducive to standardized mass production, and greatly reduces production costs.

[0017] The utility model is further provided with: a fan port or an air grille is provided at a position on the rear side of the wiring side plate corresponding to the heat sink, and the fan port is detachably connected to a fan.

[0018] By adopting the above technical solution, the fan is installed on the wiring side panel, and the wiring side panel with the fan can be installed above or below the body according to needs. At the same time, the fan can be installed positively or reversely with the wiring side panel according to needs (that is, exhaust or supply air in the shell can be achieved). The accessories remain unchanged, and only the installation position needs to be changed, so that the soft starter can quickly meet different needs, greatly improving the applicability of the soft starter.

[0019] The utility model is further provided with: an insulating plate is provided between the heat dissipation components, and an insulating plate is provided between the machine body and the heat dissipation components.

[0020] By adopting the above technical solution, the safety isolation space is greatly reduced by inserting the insulating plate, making the overall structure more compact and reducing the volume. At the same time, the insulating plate is convenient to fix due to the small spacing, and no additional positioning mechanism is required to fix the insulating plate, which is easy to install. At the same time, soft starters of different powers can achieve safe insulation by simply replacing insulating plates of different thicknesses (about 2-3mm, not to limit the size of the spacing, but just to more intuitively reflect the difference from existing soft starters of the same specifications), which makes the soft starter have a wider range of uses, is conducive to standardized batch production of shells, greatly reduces production costs, and has a fixed spacing; at the same time, due to the reduction in the spacing space, the heat sink can be made larger, greatly improving the heat dissipation function, and can be started frequently without overheating, with higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the present utility model.

[0022] Figure 2 It is the main view of the internal structure of the utility model.

[0023] Figure 3 It is a three-dimensional diagram of the internal structure of the utility model.

[0024] Figure 4 The internal structure of the utility model is partially three-dimensional Figure 1 .

[0025] Figure 5 The internal structure of the utility model is partially three-dimensional Figure 2 .

[0026] Meaning of the numbers in the figure: 1. Shell, 11. Wiring side panel, 111. Socket, 112. Fan port, 113. Air grille, 12. Fan, 2. Panel, 3. Heat dissipation assembly, 31. Heat dissipation part, 311. Mounting slot, 4. Thyristor, 5. Fastening assembly, 51. Bolt, 52. Nut, 6. Insulation plate, 7. Conductive sheet, 71. First connecting hole, 72. Second connecting hole, 73. First connecting section, 74. Second connecting section, 75. Connecting part, 8. Card sleeve, 81. Main body, 82. Through hole, 83. Protective protrusion, 84. Grip, 85. Card part. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] Reference Attachment Figure 1-5 , an online soft starter, comprising a shell 1 and a panel 2, wherein the shell 1 comprises three groups of heat dissipation components 3, a circuit board and a thyristor 4, the heat dissipation component 3 comprises a heat dissipation member 31 clamped on both sides of the thyristor 4, the heat dissipation member 31 corresponding to the side of the panel 2 is the front side, the front side of the heat dissipation member 31 is provided with a mounting slot 311, and at least one end of the mounting slot 311 is open. A fastening component 5 for connecting a conductive sheet 7 is slidably provided in the mounting slot 311, and the conductive sheet 7 comprises a first connecting section 73 connected to the fastening component 5 and a second connecting section 74 extending out of the shell 1, the first connecting section 73 is provided with a first connecting hole 71, and the second connecting section 74 is provided with a second connecting hole 72, the shell 1 comprises a machine body and a wiring side plate 11, the wiring side plate 11 is detachably connected to the machine body, and the wiring side plate 11 is provided with a socket 111 for the second connecting section 74 to extend.

[0029] This embodiment is further configured as follows: the mounting groove 311 is configured in an inverted T shape, the fastening assembly 5 includes a bolt 51, the bolt 51 includes a nut inverted in the mounting groove 311 and a screw adapted to the first connecting hole 71, the screw passes through the first connecting hole 71 and is threadedly connected to a nut 52 arranged outside the heat sink 31.

[0030] This embodiment further provides that: the number of the first connecting holes 71 is two.

[0031] This embodiment is further configured as follows: the conductive sheet 7 also includes a connecting portion 75 connecting the first connecting segment 73 and the second connecting segment 74, the first connecting hole 71 is aligned with the mounting groove 311, the second connecting hole 72 is arranged on the second connecting segment 74, the center line of the second connecting segment 74 is aligned with the center line of the interval of the same group of heat dissipation components 31, the first connecting segment 73, the second connecting segment 74 and the connecting portion 75 are integrally formed and are at the same height.

[0032] This embodiment is further configured as follows: a sleeve 8 for protecting the second connecting section 74 is provided in the socket 111, and the sleeve 8 includes a main body 81, and the main body 81 is provided with a through hole 82 adapted to the second connecting section 74; the main body 81 is provided with a protective protrusion 83 corresponding to the outer side of the wiring side plate 11 for preventing the entry of water vapor and dust; the protective protrusion 83 is larger than the size of the socket 111; the main body 81 is provided with a gripping portion 84 corresponding to the outer side of the wiring side plate 11; the gripping portion 84 is arranged in a stepped manner between the protective protrusion 83 and the outer wall of the wiring side plate 11; the main body 81 is provided with a clamping portion 85 on the inner side of the wiring side plate 11, and the wiring side plate 11 is clamped between the clamping portion 85 and the gripping portion 84.

[0033] This embodiment further configures: the heat dissipation components 3 are divided into three groups, the number of the jacks 111 on the wiring side panel 11 is three, and the three jacks 111 are arranged at the same height.

[0034] This embodiment further provides that: the wiring side plate 11 is provided with a fan port 112 or an air grille 113 at a position on the rear side corresponding to the heat sink 31, and the fan port 112 is detachably connected to the fan 12.

[0035] This embodiment further provides: an insulating plate 6 is provided between the heat dissipation components 3, and an insulating plate 6 is provided between the body and the heat dissipation components 3.

[0036] In the description of the present invention, it should be noted that the terms "middle", "left", "right", "inside", "outside", "front", "back", "upper", "lower", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The above-mentioned "between" does not only refer to directions or positions, but also includes the meaning of the interaction between different parts.

[0037] Although the present invention frequently uses terms such as housing 1, wiring side panel 11, jack 111, fan port 112, air grille 113, fan 12, panel 2, heat dissipation assembly 3, heat dissipation element 31, mounting slot 311, thyristor 4, fastening assembly 5, bolt 51, nut 52, insulating plate 6, conductive sheet 7, first connecting hole 71, second connecting hole 72, first connecting section 73, second connecting section 74, connecting portion 75, ferrule 8, main body 81, through hole 82, protective protrusion 83, gripping portion 84, and clamping portion 85, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. An online soft starter, comprising a housing and a panel, wherein the housing includes three sets of heat dissipation components, a circuit board, and a thyristor, characterized in that: The heat dissipation assembly includes heat dissipation members clamped on both sides of the thyristor on the left and right sides, the side of the heat dissipation member corresponding to the panel is the front side, the front side of the heat dissipation member is provided with a mounting slot, at least one end of the mounting slot is open, a fastening assembly for connecting the conductive sheet is slidably provided in the mounting slot, the conductive sheet includes a first connecting section connected to the fastening assembly and a second connecting section extending out of the shell, the first connecting section is provided with a first connecting hole, and the second connecting section is provided with a second connecting hole, the shell includes a body and a wiring side plate, the wiring side plate is detachably connected to the body, and the wiring side plate is provided with a jack for the second connecting section to extend.

2. An online soft starter according to claim 1, characterized in that: The mounting slot is in an inverted T-shape, and the fastening assembly includes a bolt, which includes a nut inverted in the mounting slot and a screw rod adapted to the first connecting hole. The screw rod passes through the first connecting hole and is threadedly connected to a nut arranged outside the heat sink.

3. The online soft starter according to claim 1, characterized in that: The number of the first connecting holes is two.

4. The online soft starter according to claim 1, characterized in that: The conductive sheet also includes a connecting portion connecting the first connecting segment and the second connecting segment, the first connecting hole is aligned with the mounting slot, the second connecting hole is arranged on the second connecting segment, the center line of the second connecting segment is aligned with the center line of the interval of the same group of heat dissipation elements, and the first connecting segment, the second connecting segment and the connecting portion are integrally formed and are at the same height.

5. The online soft starter according to claim 1, characterized in that: A ferrule for protecting the second connecting section is provided in the socket, and the ferrule includes a main body, and the main body is provided with a through hole adapted to the second connecting section. A protective protrusion for preventing the entry of water vapor and dust is provided on the outer side of the main body corresponding to the wiring side plate, and the protective protrusion is larger than the size of the socket. A gripping portion is provided on the outer side of the main body corresponding to the wiring side plate, and the gripping portion is arranged in a stepped manner between the protective protrusion and the outer wall of the wiring side plate. A clamping portion is provided on the inner side of the main body corresponding to the wiring side plate, and the wiring side plate is clamped between the clamping portion and the gripping portion.

6. The online soft starter according to claim 1, characterized in that: There are three groups of heat dissipation components, and the number of jacks on the wiring side plate is three, and the three jacks are set at the same height.

7. The online soft starter according to claim 1, characterized in that: The wiring side plate is provided with a fan port or an air grille at a position corresponding to the rear side of the heat sink, and the fan port is detachably connected to a blower.

8. The online soft starter according to claim 1, characterized in that: An insulating plate is provided between the heat dissipation components, and an insulating plate is provided between the machine body and the heat dissipation components.

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