Common mode filter

Abstract

The utility model provides a common mode filter, relates to filter technical field, including base and heat dissipation mechanism, the heat dissipation mechanism is provided above the base, the heat dissipation mechanism includes ventilation assembly, installation assembly, refrigeration assembly and air cooling assembly, the ventilation assembly is provided on the upper side of the base, the installation assembly is provided on the outer side of the base, the refrigeration assembly is provided on the outer side of the base, and the air cooling assembly is provided on the outer side of the base. Through the arrangement of the switching assembly, the heat dissipation mode of the common mode filter can be switched, then adjustment is carried out according to the heat dissipation condition of the common mode filter, the use requirements of a user are met, through the arrangement of the heat dissipation mechanism, the ventilation assembly can carry out natural heat dissipation on the common mode filter, and the installation assembly facilitates the installation of the common mode filter. The refrigeration assembly and the air cooling assembly can cooperate to carry out active heat dissipation on the common mode filter, and the air cooling assembly can independently carry out air cooling heat dissipation on the common mode filter, so that heat dissipation of the common mode filter in a high-temperature environment is ensured, and the practicability of the common mode filter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a common mode filter. Background Art

[0002] Common-mode inductor, also known as common-mode filter, is a common-mode interference suppression device with ferrite as the core. It consists of two coils of the same size and number of turns symmetrically wound on the same ferrite ring core to form a four-terminal device. It has a large inductance and a suppressive effect on common-mode signals. Due to the lack of limit devices between the traditional winding distribution structure, when vibration occurs, it is easy for adjacent windings to accidentally touch each other, which poses a certain risk of use. At the same time, since common-mode filters in high-current lines are prone to generate a lot of heat during operation, the heat needs to be dissipated in time. Traditional high-current three-phase common-mode filters usually use fins for heat dissipation, which has a low heat dissipation efficiency and is prone to heat accumulation.

[0003] After searching, the document of announcement number "CN219936824U" mentioned that "the utility model discloses a high-voltage and high-current three-phase common-mode filter, including a shell, the shell includes a base, the inner wall of the base is fixedly installed with a filter component, the filter component includes an annular core, the outer wall of the annular core is wound with winding one, winding two, and winding three, the winding one and winding three are symmetrically distributed on the left and right, the winding two is located at the right center of the annular core, the winding one, winding two, and winding three are isolated from each other, the winding one, winding two, and winding three are used to cooperate with the connection of a high-voltage and high-current three-phase circuit, the top of the base is detachably fixed with an upper cover, the bottom of the upper cover is fixedly installed with a snap-on cover, the outer wall of the snap-on cover is plugged in with the inner wall of the top of the base, the A partition is fixedly installed on the outer wall of the bottom of the snap-fit ​​cover, which is convenient for limiting the three windings, so that the three windings can avoid accidental touching under the action of vibration, and the stability between the windings is improved. When in use, an air duct is set, and a servo motor and an impeller are fixedly installed inside the air duct for use, so as to facilitate the high-temperature gas generated when the filter component works. The servo motor and the impeller form an exhaust structure, so that the hot air on the top of the base and the inner top of the upper cover can be discharged into the exhaust hole through the air duct in time, and discharged through the exhaust hole. Under the action of negative pressure, the external cold air enters the base through the air inlet hole, so as to facilitate the formation of air convection and improve the heat dissipation efficiency. However, the common mode filter dissipates heat through air cooling, and the heat dissipation effect of air cooling is not good in a high temperature environment.

[0004] Therefore, we provide a common mode filter to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a common mode filter to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a common mode filter, comprising a base and a heat dissipation mechanism, wherein the heat dissipation mechanism is arranged above the base;

[0007] The heat dissipation mechanism includes a ventilation component, a mounting component, a refrigeration component and an air-cooling component. The ventilation component is arranged on the upper side of the base, the mounting component is arranged on the outer side of the base, the refrigeration component is arranged above the ventilation component, and the air-cooling component is arranged on the outer side of the refrigeration component.

[0008] Preferably, the ventilation assembly includes a common mode filter and a ventilation net, the common mode filter is fixedly mounted on the top of the base, and the ventilation net is fixedly mounted on the outer side of the common mode filter and the bottom of the base.

[0009] Preferably, the installation assembly comprises an incoming terminal and an outgoing terminal, the incoming terminal is fixedly mounted on one side of the base, and the outgoing terminal is fixedly mounted on the other side of the base.

[0010] Preferably, the refrigeration assembly comprises a semiconductor refrigeration plate and heat dissipation fins, the semiconductor refrigeration plate is fixedly mounted on the top of the common mode filter, and the heat dissipation fins are fixedly mounted on the top of the semiconductor refrigeration plate.

[0011] Preferably, the air cooling assembly comprises a fixing rod and an electric fan, the fixing rod is fixedly mounted on the top surface of the base, and the electric fan is fixedly mounted on the top of the fixing rod.

[0012] Preferably, a switching assembly is provided below the electric fan, and the switching assembly comprises a motor, a lifting screw, a lifting frame and a square telescopic tube.

[0013] Preferably, a motor is fixedly mounted on the bottom of the electric fan, and an output shaft of the motor is fixedly connected to a lifting screw via a coupling.

[0014] Preferably, a lifting frame is threadedly installed on the outer surface of the lifting screw, the interior of the lifting frame is slidably connected to the outer surface of the fixing rod, and a square telescopic tube is fixedly installed between the top of the lifting frame and the bottom surface of the electric fan.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By switching the settings of the components, the heat dissipation mode of the common mode filter can be switched, and then adjusted according to the heat dissipation of the common mode filter to meet the user's needs.

[0017] 2. Through the setting of the heat dissipation mechanism, the ventilation component can naturally dissipate the heat of the common mode filter, the installation component facilitates the installation of the common mode filter, the refrigeration component and the air cooling component can cooperate to actively dissipate the heat of the common mode filter, and the air cooling component can independently perform air cooling on the common mode filter, thereby ensuring the heat dissipation of the common mode filter in a high temperature environment and improving the practicability of the common mode filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the heat dissipation mechanism structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the switching component of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the air cooling component and the switching component of the utility model.

[0022] Numbers in the figure: 1. base; 2. heat dissipation mechanism; 21. ventilation assembly; 211. common mode filter; 212. ventilation net; 22. installation assembly; 221. incoming terminal; 222. outgoing terminal; 23. refrigeration assembly; 231. semiconductor refrigeration plate; 232. heat dissipation fins; 24. air cooling assembly; 241. fixing rod; 242. electric fan; 3. switching assembly; 31. motor; 32. lifting screw; 33. lifting frame; 34. square telescopic tube. DETAILED DESCRIPTION

[0023] 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 in 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.

[0024] Embodiment 1

[0025] See also Figure 1-4 As shown, the utility model provides a technical solution: a common mode filter, comprising a base 1 and a heat dissipation mechanism 2, wherein the heat dissipation mechanism 2 is arranged above the base 1;

[0026] The heat dissipation mechanism 2 includes a ventilation component 21, a mounting component 22, a refrigeration component 23 and an air-cooling component 24. The ventilation component 21 is arranged on the upper side of the base 1, the mounting component 22 is arranged on the outer side of the base 1, the refrigeration component 23 is arranged above the ventilation component 21, and the air-cooling component 24 is arranged on the outer side of the refrigeration component 23.

[0027] Furthermore, the ventilation assembly 21 includes a common mode filter 211 and a ventilation net 212. The common mode filter 211 is fixedly installed on the top of the base 1, and the ventilation net 212 is fixedly installed on the outer side of the common mode filter 211 and the bottom of the base 1. The common mode filter 211 dissipates heat naturally through the ventilation net 212.

[0028] Furthermore, the installation component 22 includes an input terminal 221 and an output terminal 222. The input terminal 221 is fixedly installed on one side of the base 1, and the output terminal 222 is fixedly installed on the other side of the base 1. The line is connected through the input terminal 221 and the output terminal 222.

[0029] Furthermore, the refrigeration assembly 23 includes a semiconductor refrigeration plate 231 and heat dissipation fins 232. The semiconductor refrigeration plate 231 is fixedly installed on the top of the common mode filter 211, and the heat dissipation fins 232 are fixedly installed on the top of the semiconductor refrigeration plate 231. The cold end of the semiconductor refrigeration plate 231 cools the common mode filter 211, and the hot end of the semiconductor refrigeration plate 231 raises the heat dissipation fins 232 to dissipate heat.

[0030] Furthermore, the air cooling assembly 24 includes a fixing rod 241 and an electric fan 242. The fixing rod 241 is fixedly installed on the top surface of the base 1, and the electric fan 242 is fixedly installed on the top of the fixing rod 241. The electric fan 242 discharges heat from the cooling fins 232 and quickly dissipates heat from the common mode filter 211.

[0031] Embodiment 2

[0032] See also Figure 1 , Figure 3 and Figure 4 As shown, compared with Example 1, as another implementation of the utility model, a switching component 3 is arranged below the electric fan 242, and the switching component 3 includes a motor 31, a lifting screw 32, a lifting frame 33 and a square telescopic tube 34.

[0033] Furthermore, a motor 31 is fixedly installed at the bottom of the electric fan 242 , and an output shaft of the motor 31 is fixedly connected to a lifting screw 32 via a coupling, so that the motor 31 drives the lifting screw 32 to rotate.

[0034] Furthermore, a lifting frame 33 is threadedly installed on the outer surface of the lifting screw 32, the interior of the lifting frame 33 is slidably connected to the outer surface of the fixed rod 241, and a square telescopic tube 34 is fixedly installed between the top of the lifting frame 33 and the bottom surface of the electric fan 242. The lifting screw 32 drives the lifting frame 33 to rise and fall, and the lifting frame 33 drives the square telescopic tube 34 to extend and retract.

[0035] Working principle: First, a common mode filter is moved to a working position. When in use, the first step is that the common mode filter 211 is normally cooled naturally through the ventilation net 212, and the line is connected through the input terminal 221 and the output terminal 222. The second step is that the motor 31 drives the lifting screw 32 to rotate, the lifting screw 32 drives the lifting frame 33 to lift, and the lifting frame 33 drives the square telescopic tube 34 to extend and retract. The third step is that in a low temperature environment, the lifting frame 33 descends, and the electric fan 242 drives the air to enter the common mode filter 211 through the bottom of the base 1, and then enters the square telescopic tube 34 through the outside of the common mode filter 211, and is discharged through the electric fan 242, and the common mode filter 211 is cooled by air. The fourth step is that in a high temperature environment, the cold end of the semiconductor refrigeration plate 231 cools the common mode filter 211, and the hot end of the semiconductor refrigeration plate 231 raises the heat dissipation fins 232 for heat dissipation, and the electric fan 242 discharges heat from the heat dissipation fins 232, and the common mode filter 211 is quickly cooled. In this way, the use process of a common mode filter is completed.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A common mode filter, comprising a base (1) and a heat dissipation mechanism (2), characterized in that: A heat dissipation mechanism (2) is provided above the base (1); The heat dissipation mechanism (2) comprises a ventilation component (21), a mounting component (22), a refrigeration component (23) and an air cooling component (24); the ventilation component (21) is arranged on the upper side of the base (1), the mounting component (22) is arranged on the outer side of the base (1), the refrigeration component (23) is arranged above the ventilation component (21), and the air cooling component (24) is arranged on the outer side of the refrigeration component (23).

2. A common mode filter according to claim 1, characterized in that: The ventilation assembly (21) comprises a common mode filter (211) and a ventilation net (212); the common mode filter (211) is fixedly mounted on the top of the base (1); and the ventilation net (212) is fixedly mounted on the outer side of the common mode filter (211) and the bottom of the base (1).

3. A common mode filter according to claim 1, characterized in that: The installation assembly (22) comprises an incoming terminal (221) and an outgoing terminal (222); the incoming terminal (221) is fixedly mounted on one side of the base (1), and the outgoing terminal (222) is fixedly mounted on the other side of the base (1).

4. A common mode filter according to claim 2, characterized in that: The refrigeration component (23) comprises a semiconductor refrigeration plate (231) and a heat dissipation fin (232); the semiconductor refrigeration plate (231) is fixedly mounted on the top of the common mode filter (211); and the heat dissipation fin (232) is fixedly mounted on the top of the semiconductor refrigeration plate (231).

5. A common mode filter according to claim 1, characterized in that: The air cooling assembly (24) comprises a fixing rod (241) and an electric fan (242); the fixing rod (241) is fixedly mounted on the top surface of the base (1); and the electric fan (242) is fixedly mounted on the top of the fixing rod (241).

6. A common mode filter according to claim 5, characterized in that: A switching assembly (3) is arranged below the electric fan (242), and the switching assembly (3) comprises a motor (31), a lifting screw (32), a lifting frame (33) and a square telescopic tube (34).

7. A common mode filter according to claim 6, characterized in that: A motor (31) is fixedly mounted on the bottom of the electric fan (242), and an output shaft of the motor (31) is fixedly connected to a lifting screw (32) via a coupling.

8. A common mode filter according to claim 7, characterized in that: A lifting frame (33) is threadedly mounted on the outer surface of the lifting screw rod (32); the interior of the lifting frame (33) is slidably connected to the outer surface of the fixing rod (241); and a square telescopic tube (34) is fixedly mounted between the top of the lifting frame (33) and the bottom surface of the electric fan (242).

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