Filter and frequency conversion equipment

Abstract

The utility model is applicable to the technical field of filtering equipment, and provides a filter and frequency conversion equipment, the filter comprises an insulating part, a filter device and a lead group, and the frequency conversion equipment comprises any one of the filters. Interval parts are arranged in the containing space in the insulating part, and the containing space is divided into a plurality of installation cavities which are not communicated with one another through the interval parts. The filter devices are all integrated in the mounting cavity in the insulating part, the filter devices are mutually spaced through the spacing parts, and the filter devices are communicated with an external circuit through the lead group after being connected. The frequency converter serially connected with the filter can still have better electromagnetic compatibility conducted emission performance under the condition of a long motor cable, the accommodating space is divided into a plurality of mounting cavities which are not communicated with one another through the spacing parts, and the filter devices are respectively arranged in different mounting cavities, so that the space utilization rate in the insulating part is improved, and the cost is reduced. And the overall occupied volume of the filter is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter equipment technical field especially, it relates to a filter and frequency conversion equipment. BACKGROUND

[0002] The filter is a very important component in the frequency converter. Among them, the frequency converter is used for changing the power frequency and voltage of the AC motor, so as to adjust the motor speed. The main function of the filter is to suppress the electromagnetic interference generated by the frequency converter, and also prevent the electromagnetic interference from the outside into the frequency converter. In use, it can be directly connected in series to the frequency converter input cable, so that the frequency converter connected in series can still have good electromagnetic compatibility transmission performance under long motor cable conditions. However, the existing filter has the problems of dispersed structure and large space occupation in use, which increases the difficulty of frequency converter design. UTILITY MODEL CONTENTS

[0003] The utility model discloses a filter and frequency conversion equipment, which aims to solve the technical problems of the filter in the prior art, such as dispersed structure and large space occupation in use.

[0004] The utility model is realized in this way. In a first aspect, a filter is provided, comprising:

[0005] The insulating part has an accommodation space inside, and the accommodation space is further provided with a spacing part, and the spacing part separates the accommodation space into a plurality of mounting cavities that are not connected to each other;

[0006] The filter device is provided in different mounting cavities; and

[0007] The lead group is used to communicate the filter device with the external circuit.

[0008] In an optional embodiment, the filter device includes a first capacitor group, an inductor group, a second capacitor group and a third capacitor group. In the first direction, the inductor group is located between the first capacitor group and the second capacitor group, and the third capacitor group is located on the side of the second capacitor group away from the inductor group. The arrangement order of the plurality of mounting cavities matches the filter device.

[0009] In an optional embodiment, the first capacitor group and the second capacitor group each include a plurality of single capacitors, and the single capacitors in the first capacitor group and the second capacitor group are arranged in sequence in the second direction, and the second direction is arranged at an angle with the first direction.

[0010] In an optional embodiment, the first capacitor group comprises a first capacitor, a second capacitor and a third capacitor arranged in sequence along a second direction, the second capacitor group comprises a fourth capacitor, a fifth capacitor and a sixth capacitor arranged in sequence along the second direction, and the third capacitor group comprises a seventh capacitor, the second direction being arranged at an angle with the first direction.

[0011] In an optional embodiment, a first end of the first capacitor is connected to a first end of the inductor group through a first conductive member, a first end of the second capacitor is connected to a second end of the inductor group through a second conductive member, a first end of the third capacitor is connected to a third end of the inductor group through a third conductive member, a first end of the fourth capacitor is connected to a fourth end of the inductor group through a fourth conductive member, a first end of the fifth capacitor is connected to a fifth end of the inductor group through a fifth conductive member, a first end of the sixth capacitor is connected to a sixth end of the inductor group through a sixth conductive member, a second end of the first capacitor, a second end of the second capacitor and a second end of the third capacitor are connected through a seventh conductive member, and a second end of the fourth capacitor, a second end of the fifth capacitor, a second end of the sixth capacitor and a first end of the seventh capacitor are connected through an eighth conductive member.

[0012] In an optional embodiment, the lead group comprises a first connecting lead and a plurality of second connecting leads, the first connecting lead being electrically connected to the second end of the seventh capacitor, and the plurality of second connecting leads being respectively connected to the first end to the sixth end of the inductor group.

[0013] In an optional embodiment, the insulating member has an opening structure, and the accommodating space is filled with a fixed filling part, the fixed filling part being filled into the accommodating space through the opening structure, the fixed filling part being used for fixing the filter device.

[0014] In an optional embodiment, a blocking part for preventing overflow of the fixed filling part is arranged at the opening structure, the blocking part being arranged along a circumferential direction of the opening structure.

[0015] In an optional embodiment, a protruding rib for guiding flow of the fixed filling part is arranged on an inner wall of the mounting cavity, the protruding rib being arranged along a depth direction of the mounting cavity.

[0016] In a second aspect, a frequency converter is provided, comprising the filter device according to any one of the above.

[0017] The technical effect of the utility model compared with prior art is: the interval part is arranged in the containing space inside the insulating part, the containing space is divided into multiple installation cavities which are not communicated with each other through the interval part. The filter devices which constitute the filter circuit are arranged in different installation cavities respectively, and the corresponding filter devices are communicated with external circuit through the lead group after the filter devices are connected into the filter circuit. Compared with the mode that the filter devices are dispersedly arranged on the circuit board in prior art, the filter devices are integrated in the installation cavities inside the insulating part, the filter devices are mutually spaced through the interval part, and the filter devices are communicated with external circuit through the lead group after the filter devices are connected. The frequency converter which is connected with the filter can still have better electromagnetic compatibility transmission performance under long motor cable condition, the containing space is divided into multiple installation cavities which are not communicated with each other through the interval part, and the filter devices are arranged in different installation cavities respectively, thereby improving the space utilization rate inside the insulating part and reducing the volume occupied by the filter as a whole.

[0018] It can be understood that the beneficial effects of the second aspect described above can be referred to the related description in the first aspect described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments of the utility model or the prior art description, obviously, the drawings described below are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0020] Figure 1 It is the structural schematic diagram of the filter provided by the embodiments of the utility model;

[0021] Figure 2 It is the structural schematic diagram of the filter removing fixed filling part provided by the embodiments of the utility model;

[0022] Figure 3 It is the explosion structural schematic diagram of the filter provided by the embodiments of the utility model;

[0023] Figure 4 It is the circuit connection diagram of the filter device provided by the embodiments of the utility model;

[0024] Figure 5 It is the filter effect diagram of the filter without installation in the embodiments of the utility model;

[0025] Figure 6 It is the filter effect diagram of the filter with installation in the embodiments of the utility model.

[0026] EXPLANATION OF REFERENCE NUMERALS

[0027] 1. Insulating component; 11. Spacing part; 12. Accommodating space; 13. Mounting cavity; 14. Blocking part; 15. Rib; 16. Guide rounded corner; 2. Filtering component; 21. First capacitor group; 211. First capacitor; 212. Second capacitor; 213. Third capacitor; 22. Second capacitor group; 221. Fourth capacitor; 222. Fifth capacitor; 223. Sixth capacitor; 23. Inductor group; 24. Third capacitor group; 241. Seventh capacitor; 3. Lead group; 31. First connecting lead; 32. Second connecting lead; 4. Fixing filling part; 5. Conductive component group; 51. First conductive component; 52. Second conductive component; 53. Third conductive component; 54. Fourth conductive component; 55. Fifth conductive component; 56. Sixth conductive component; 57. Seventh conductive component; 58. Eighth conductive component. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this embodiment, according to Figure 1 The XYZ rectangular coordinate system established in the text is defined as follows: the side located in the positive direction of the X-axis is defined as front, and the side located in the negative direction of the X-axis is defined as back; the side located in the positive direction of the Y-axis is defined as left, and the side located in the negative direction of the Y-axis is defined as right; the side located in the positive direction of the Z-axis is defined as up, and the side located in the negative direction of the Z-axis is defined as down.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] Please refer to Figures 1 to 4 As shown, in a first aspect of this utility model embodiment, a filter is provided, comprising an insulating member 1, a filter element 2, and a lead assembly 3. The insulating member 1 has an internal accommodating space 12, and a spacer 11 is further provided within the accommodating space 12, dividing the accommodating space 12 into multiple non-communicating mounting cavities 13. Multiple filter elements 2 are provided, and each filter element 2 is disposed in a different mounting cavity 13. The lead assembly 3 is used to electrically connect the output terminal of the filter element 2 to an external circuit.

[0035] Specifically, insulating component 1 refers to a component with a certain volume. Insulating component 1 is usually made of insulating material, such as plastic, polyester, or ceramic. Receiving space 12 refers to a cavity structure with a certain volume. The insulating component 1 can be made into a shell-like structure with a certain wall thickness to enclose the receiving space 12. Spacer 11 refers to a component with a certain volume. Spacer 11 can be block-shaped, plate-shaped, or a combination of various shapes. Spacer 11 is also usually made of insulating material. Spacer 11 can be integrally formed with the insulating component 1.

[0036] Filtering component 2 refers to the electrical components that make up the entire filtering circuit. Filtering component 2 may include capacitors, inductors, or resistors, etc. In use, multiple filtering components 2 can be connected in a preset layout to form a filtering circuit. Lead group 3 refers to a group of multiple connecting leads 3. The connecting leads in the lead group 3 can be connected to the corresponding filtering component 2 to realize the connection between the entire filtering circuit and the external circuit.

[0037] The filter provided in this embodiment of the invention has a spacer 11 in the accommodating space 12 inside the insulating component 1, which divides the accommodating space 12 into multiple non-interconnected mounting cavities 13. The filter components 2 that make up the filter circuit are respectively disposed in different mounting cavities 13, and after the filter components 2 are interconnected to form a filter circuit, the corresponding filter components 2 are connected to the external circuit through lead wire groups 3. Compared with the prior art where the filter components 2 are scattered on the circuit board, by integrating all the filter components 2 in the mounting cavities 13 inside the insulating component 1, separating the filter components 2 from each other through the spacer 11, and connecting the filter components 2 to the external circuit through the lead wire groups 3, the inverter connected in series with the filter can still have good electromagnetic compatibility conducted emission performance even with long motor cables. Furthermore, by dividing the accommodating space 12 into multiple non-interconnected mounting cavities 13 through the spacer 11 and distributing the filter components 2 in different mounting cavities 13, the utilization rate of the accommodating space 12 in the insulating component 1 is improved, and the overall volume occupied by the filter is reduced.

[0038] Furthermore, by placing the filter components 2 in different mounting cavities 13 and separating adjacent filter components 2 with the spacer 11, mutual interference between two adjacent filter components 2 when the distance between them is too great can be avoided. This improves the stability of the entire filtering circuit while maintaining a compact structure.

[0039] In one embodiment, see Figure 2The filter device 2 includes a first capacitor bank 21, an inductor bank 23, a second capacitor bank 22, and a third capacitor bank 24. Along the first direction X, the inductor bank 23 is located between the first capacitor bank 21 and the second capacitor bank 22, and the third capacitor bank 24 is located on the side of the second capacitor bank 22 opposite to the inductor bank 23. The arrangement of the multiple mounting cavities 13 matches the filter device 2. Specifically, the first capacitor bank 21 can be a structure composed of multiple capacitors, which can be connected in parallel. The second capacitor bank 22 can also be a structure composed of multiple capacitors, which can be connected in parallel. Furthermore, the third capacitor bank 24 can be composed of a single capacitor or multiple capacitors. The inductor bank 23 refers to a component structure composed of one or more inductors. In the filter circuit, the inductor mainly serves to block high-frequency signals from passing through and allow low-frequency signals to transmit smoothly. By dividing multiple filter components 2 into a first capacitor group 21, an inductor group 23, a second capacitor group 22, and a third capacitor group 24, and with the inductor group 23 located between the first capacitor group 21 and the second capacitor group 22 along the first direction X, and the third capacitor group 24 located on the side of the second capacitor group 22 away from the inductor group 23, the connection between the capacitors in the first capacitor group 21 and the second capacitor group 22 and the inductor group 23 is made more convenient, and the connection between the third capacitor group 24 and the second capacitor group 22 is also made more convenient. Under the premise of satisfying the overall layout of the filter circuit, the arrangement of multiple filter components 2 is made more compact, the space utilization rate in the accommodating space 12 is improved, and the overall volume occupied by the filter is reduced.

[0040] Furthermore, the arrangement of the multiple mounting cavities 13 matches the filter component 2, dividing them into a first cavity group for accommodating the first capacitor group 21, a second cavity group for mounting the inductor group 23, a third cavity group for mounting the second capacitor group 22, and a fourth cavity group for mounting the third capacitor group 24. Each of the first, second, third, and fourth cavity groups includes at least one mounting cavity 13, and these groups are also arranged sequentially along the first direction X. This arrangement of the mounting cavities 13 makes the division of the internal space 12 of the insulating component 1 more rational, and also makes the layout of the mounting cavities 13 more reasonable.

[0041] In one embodiment, see Figure 2 and Figure 3Both the first capacitor group 21 and the second capacitor group 22 include multiple individual capacitors. These individual capacitors are arranged sequentially along a second direction Y, with the second direction Y forming an angle with the first direction X. Specifically, the angle between the second direction Y and the first direction X is generally a right angle or close to a right angle. By arranging the multiple individual capacitors in the first capacitor group 21 sequentially along the second direction Y, and by placing the first capacitor group 21 on the side of the inductor group 23 along the first direction X, the distances between the multiple individual capacitors in the first capacitor group 21 and the inductor group 23 are all equal, making the connection between the multiple individual capacitors in the first capacitor group 21 and the inductor group 23 more convenient. Similarly, by sequentially arranging multiple individual capacitors in the second capacitor group 22 along the second direction Y, and setting the second capacitor group 22 on the other side of the inductor group 23 along the first direction X, the distances between the multiple individual capacitors in the second capacitor group 22 and the inductor group 23 are all equal, making the connection between the multiple individual capacitors in the second capacitor group 22 and the inductor group 23 more convenient, thereby making the filter structure more compact.

[0042] In one embodiment, see Figure 2 and Figure 3 The first capacitor group 21 includes a first capacitor 211, a second capacitor 212, and a third capacitor 213 arranged sequentially along the second direction Y. The second capacitor group 22 includes a fourth capacitor 221, a fifth capacitor 222, and a sixth capacitor 223 arranged sequentially along the second direction Y. The third capacitor group 24 includes a seventh capacitor 241. The second direction Y is arranged at an angle to the first direction X. Specifically, the first capacitor 211, the second capacitor 212, the third capacitor 213, the fourth capacitor 221, the fifth capacitor 222, and the sixth capacitor 223 can all be X capacitors, which are cross-line capacitors. Cross-line capacitors are capacitors connected between the two lines (LN) of a power line and are used to filter differential mode interference signals. The seventh capacitor 241 can be a Y capacitor, where a Y capacitor can refer to a bypass capacitor. In a circuit, a bypass capacitor is a capacitor used to provide a low-impedance path for a signal of a specific frequency, thereby allowing the signal to bypass other circuit components. By sequentially arranging the first capacitor 211, the second capacitor 212, and the third capacitor 213 along the second direction Y, all three capacitors can be arranged on the side of the inductor group 23, making their connection to the inductor group 23 more convenient. Similarly, by sequentially arranging the fourth capacitor 221, the fifth capacitor 222, and the sixth capacitor 223 along the second direction Y, all three capacitors can be arranged on the other side of the inductor group 23, making their connection to the inductor group 23 more convenient and allowing for a more compact filter structure.

[0043] In one embodiment, see Figure 2 and Figure 3 The first terminal of the first capacitor 211 is connected to the first terminal of the inductor group 23 through the first conductive element 51. The first terminal of the second capacitor 212 is connected to the second terminal of the inductor group 23 through the second conductive element 52. The first terminal of the third capacitor 213 is connected to the third terminal of the inductor group 23 through the third conductive element 53. The first terminal of the fourth capacitor 221 is connected to the fourth terminal of the inductor group 23 through the fourth conductive element 54. The first terminal of the fifth capacitor 222 is connected to the fifth terminal of the inductor group 23 through the fifth conductive element 55. The first terminal of the sixth capacitor 223 is connected to the sixth terminal of the inductor group 23 through the sixth conductive element 56. The second terminals of the first capacitor 211, the second capacitor 212, and the third capacitor 213 are all connected through the seventh conductive element 57. The second terminals of the fourth capacitor 221, the fifth capacitor 222, the sixth capacitor 223, and the first terminal of the seventh capacitor 241 are all connected through the eighth conductive element 58. Specifically, the first conductive element 51 to the seventh conductive element 57 are all components capable of conducting current, the first conductive element 51 to the eighth conductive element 58 can all be wires, and the first conductive element 51 to the seventh conductive element 57 can all be columnar components of a certain length. By connecting multiple filter components 2 in the above manner, it can be ensured that the filter components 2 are connected in the shortest possible way, making the filter structure more compact while ensuring easier connection of the filter circuit.

[0044] In an optional embodiment, please refer to Figure 2 and Figure 3 The first conductive element 51 is fixed to the first end of the first capacitor 211 and the first end of the inductor group 23 by welding. The second conductive element 52 is fixed to the first end of the second capacitor 212 and the second end of the inductor group 23 by welding. The third conductive element 53 is fixed to the first end of the third capacitor 213 and the third end of the inductor group 23 by welding. The fourth conductive element 54 is fixed to the first end of the fourth capacitor 221 and the fourth end of the inductor group 23 by welding. The fifth conductive element 55 is fixed to the first end of the fifth capacitor 222 and the fifth end of the inductor group 23 by welding. The sixth conductive element 56 is fixed to the first end of the sixth capacitor 223 and the sixth end of the inductor group 23 by welding. The seventh conductive element 57 is fixed to the second end of the first capacitor 211, the second end of the second capacitor 212, and the second end of the third capacitor 213 by welding. The eighth conductive element 58 is fixed to the second end of the fourth capacitor 221, the second end of the fifth capacitor 222, the second end of the sixth capacitor 223, and the first end of the seventh capacitor 241 by welding. Fixing the circuit by welding makes the connection more convenient and faster, while also ensuring a more secure and stable connection.

[0045] In one embodiment, see Figure 2 and Figure 3 The lead group 3 includes a first connecting lead 31 and multiple second connecting leads 32. The first connecting lead 31 is electrically connected to the second terminal of the seventh capacitor 241, and the multiple second connecting leads 32 are respectively connected to the first to sixth terminals of the inductor group 23. Specifically, both the first connecting lead 31 and the second connecting leads 32 refer to wire structures of a certain length. Both the first connecting lead 31 and the second connecting leads 32 can be industrial frequency three-phase AC leads. The parts of the filter device 2 that need to be connected to the external circuit are connected to the external circuit through the first connecting lead 31 and the multiple second connecting leads 32, making the installation of the filter more convenient.

[0046] In one embodiment, see Figure 2 and Figure 3 The insulating component 1 has an open structure, and a fixing filler 4 is filled into the receiving space 12. The fixing filler 4 fills into the receiving space 12 through the open structure and is used to fix the filter component 2. Specifically, the open structure refers to a clearance structure set on the side wall of the insulating component 1. During assembly, the filter component 2 can be installed in the mounting cavity 13 in the insulating component 1 through the open structure, and after installation, the fixing filler 4 is filled into the receiving space 12 through the open structure. The fixing filler 4 can be black glue, epoxy resin, or silicone, etc. During filling, the fixing filler 4 is generally in a fluid state and can harden into a solid state after a period of time. By setting the fixing filler 4, the movement of the filter component 2 during use can be prevented, making the internal structure of the filter more stable and reliable.

[0047] In an optional embodiment, please refer to Figure 1 and Figure 2 Furthermore, a guide radius 16 is provided on the outside of the insulating component 1. The guide radius 16 is provided on the protrusion of the insulating component 1, which can make the outer surface of the insulating component 1 smoother.

[0048] In one embodiment, see Figure 3 A blocking part 14 is provided at the opening structure to prevent the fixed filling part 4 from overflowing. The blocking part 14 is arranged circumferentially around the opening structure. Specifically, the blocking part 14 is a component with a certain height. By arranging the blocking part 14 circumferentially around the opening structure, a ring structure matching the shape of the opening structure can be formed around the opening structure. Since the blocking part 14 is generally set higher than the opening structure, the blocking part 14 ensures that the fixed filling part 4 fills the receiving space 12 during filling without overflowing from the opening structure, making the filling of the fixed filling part 4 more convenient and faster.

[0049] In an optional embodiment, please refer to Figure 3 The inner side of the blocking part 14 can also be offset from the inner wall of the opening structure to form a stepped structure. The stepped structure and the inner wall of the blocking part 14 can support and limit the sealing cover, thereby making the installation position of the sealing cover more accurate.

[0050] In another alternative embodiment, please refer to Figure 3 The blocking part 14 and the insulating part 1 are integrally formed. The blocking part 14 can also be made of insulating material and integrally formed with the insulating part 1 by injection molding.

[0051] In one embodiment, see Figure 3 The inner wall of the mounting cavity 13 is provided with raised ribs 15 for guiding the flow of the fixed filling part 4. The raised ribs 15 are arranged along the depth direction of the mounting cavity 13. Specifically, the raised ribs 15 refer to protruding parts with a certain length. By providing raised ribs 15 on the inner wall of the mounting cavity 13, the filter component 2 can be installed into the mounting cavity 13 and abut against the side of the filter component 2, so that there is a gap between the side wall of the mounting cavity 13 and the filter component 2 for the passage of the fixed filling material. At the same time, the raised ribs 15 can also guide the fixed filling material in a fluid state, so that the fixed filling material can flow to the bottom of the mounting cavity 13 more easily and fill the mounting cavity 13 more conveniently.

[0052] In addition, by providing ribs 15 on the inner wall of the mounting cavity 13, the spacer 11 can be strengthened, making the spacer 11 itself stronger, and thus making the overall strength of the insulating component 1 better.

[0053] In an optional embodiment, please refer to Figure 3 Figure 3 The spacer 11 is a plate-like structure with a certain thickness. By interlacing multiple spacers 11, the accommodating space 12 is divided into multiple mounting cavities 13. The ribs 15 can be provided on the side of the spacers 11. The ribs 15, the spacers 11 and the insulating member 1 can be integrally molded, for example by injection molding, so that the overall strength of the insulating member 1 can be better.

[0054] Secondly, a frequency converter is provided, including the filter described in any of the above-mentioned items. The beneficial effects of the second aspect can be found in the relevant description in the first aspect above, and will not be repeated here.

[0055] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A filter, characterized in that, include: An insulating component, wherein the interior of the insulating component has a receiving space, and the receiving space is further provided with a spacer, and the spacer divides the receiving space into multiple non-communicating mounting cavities; The filter components are multiple and are respectively disposed in different mounting cavities; as well as Lead groups are used to connect the filter device to an external circuit.

2. The filter as described in claim 1, characterized in that, The filter device includes a first capacitor group, an inductor group, a second capacitor group, and a third capacitor group. Along a first direction, the inductor group is located between the first capacitor group and the second capacitor group, and the third capacitor group is located on the side of the second capacitor group away from the inductor group. The arrangement order of the plurality of mounting cavities matches the filter device.

3. The filter as described in claim 2, characterized in that, Both the first capacitor group and the second capacitor group include multiple individual capacitors. The individual capacitors in the first capacitor group and the second capacitor group are arranged sequentially along a second direction, and the second direction is arranged at an angle to the first direction.

4. The filter as described in claim 2, characterized in that, The first capacitor group includes a first capacitor, a second capacitor, and a third capacitor arranged sequentially along the second direction, and the second capacitor group includes a fourth capacitor, a fifth capacitor, and a sixth capacitor arranged sequentially along the second direction. The third capacitor group includes a seventh capacitor, and the second direction is arranged at an angle to the first direction.

5. The filter as described in claim 4, characterized in that, The first terminal of the first capacitor is connected to the first terminal of the inductor group through a first conductive element. The first terminal of the second capacitor is connected to the second terminal of the inductor group through a second conductive element. The first terminal of the third capacitor is connected to the third terminal of the inductor group through a third conductive element. The first terminal of the fourth capacitor is connected to the fourth terminal of the inductor group through a fourth conductive element. The first terminal of the fifth capacitor is connected to the fifth terminal of the inductor group through a fifth conductive element. The first terminal of the sixth capacitor is connected to the sixth terminal of the inductor group through a sixth conductive element. The second terminals of the first capacitor, the second capacitor, and the third capacitor are all connected through a seventh conductive element. The second terminals of the fourth capacitor, the fifth capacitor, the sixth capacitor, and the seventh capacitor are all connected through an eighth conductive element.

6. The filter as described in claim 5, characterized in that, The lead group includes a first connecting lead and a plurality of second connecting leads. The first connecting lead is electrically connected to the second terminal of the seventh capacitor, and the plurality of second connecting leads are respectively connected to the first to the sixth terminals of the inductor group.

7. The filter according to any one of claims 1 to 6, characterized in that, The insulating component has an open structure, and the receiving space is filled with a fixed filling part. The fixed filling part fills the receiving space through the open structure, and the fixed filling part is used to fix the filter component.

8. The filter as described in claim 7, characterized in that, The opening structure is provided with a blocking part to prevent the filling part from overflowing, and the blocking part is arranged along the circumference of the opening structure.

9. The filter as described in claim 7, characterized in that, The inner wall of the mounting cavity is provided with raised ribs for guiding the flow of the fixed filling part, and the raised ribs are arranged along the depth direction of the mounting cavity.

10. A frequency converter, characterized in that, Includes the filter as described in any one of claims 1 to 9.

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