Integrated filter

Abstract

The embodiment of the invention provides an integrated filter. The integrated filter comprises a cabinet body, a heat dissipation plate, a resistor and a supporting structure, wherein the heat dissipation plate, the resistor and the supporting structure are arranged in the cabinet body; wherein the resistor is mounted on the surface of the heat dissipation plate in an attached manner; and the supporting structure is fixedly connected with the heat dissipation plate, and the supporting structure is used for fixedly supporting the heat dissipation plate in the cabinet body. The heat dissipation plate is arranged in the cabinet body, the resistor is attached to the surface of the heat dissipation plate, heat dissipation is conducted on the resistor through the heat dissipation plate, the heat dissipation performance of the integrated filter can be improved through the heat dissipation measure, and therefore the resistor does not need to be a steel gate resistor or a heat pipe resistor with the large size. The resistor with a small size can be adopted, so that the size of the used cabinet body can be reduced, namely, the size of the cabinet body in the embodiment of the invention is small, and the installation is convenient.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and in particular to an integrated filter. Background Technology

[0002] In inverter power systems, filters are typically used to reduce peak voltage values. Currently, filters usually use steel grid resistors or heat pipe resistors. Because these types of resistors are relatively large, they result in a large overall filter cabinet size. Summary of the Invention

[0003] This invention provides an integrated filter that can reduce the size of the electrical cabinet.

[0004] The integrated filter provided in this embodiment of the invention includes a cabinet and a heat sink, a resistor, and a support structure disposed inside the cabinet; wherein, the resistor is attached to the surface of the heat sink; the support structure is fixedly connected to the heat sink, and the support structure is used to fix and support the heat sink inside the cabinet.

[0005] In one embodiment, the support structure includes a first support frame and a second support frame; wherein the first support frame is located at the top of the cabinet interior and the second support frame is located at the bottom of the cabinet interior; the first support frame is used to be fixedly connected to one end of the heat sink and the second support frame is used to be fixedly connected to the other end of the heat sink, so that the center line of the plane containing the heat sink extends in the vertical direction.

[0006] In one embodiment, the integrated filter further includes: a base plate disposed inside the cabinet; wherein the base plate is a grid structure formed by perforated and non-perforated portions, and the second support frame is fixedly installed on the base plate.

[0007] In one embodiment, the top and bottom of the cabinet are a grid structure formed by openwork and non-openwork portions.

[0008] In one embodiment, both the first support frame and the second support frame are provided with ventilation holes; wherein, cold air entering from the bottom of the cabinet passes sequentially through the ventilation holes on the second support frame, the heating element located between the second support frame and the first support frame, and the ventilation holes on the first support frame to become hot air, and the hot air is discharged from the top of the cabinet.

[0009] In one embodiment, the integrated filter further includes a fan disposed outside the cabinet, the fan being located below the bottom of the cabinet, and the fan being used to blow cold air into the cabinet.

[0010] In one embodiment, the integrated filter further includes a filter coil structure disposed within a first space, the first space being the space between the first support frame and the second support frame.

[0011] In one embodiment, the first support frame and the second support frame are further provided with hollowed-out portions, the size of which is larger than the size of the vent hole.

[0012] In one embodiment, the heat sink is a metal plate with a surface coated with a heat dissipation material.

[0013] In one embodiment, the resistor is a strip resistor attached to the surface of the heat sink in the vertical direction.

[0014] The integrated filters provided in the embodiments of the present invention, individually or in combination, have the following technical effects: (1) Since a heat sink is installed inside the cabinet and the resistor is attached to the surface of the heat sink, the heat sink dissipates heat from the resistor. This heat dissipation measure can improve the heat dissipation performance of the integrated filter. Therefore, it is not necessary to use a large steel grid resistor or heat pipe resistor. Since a smaller resistor can be used, the volume of the cabinet can be reduced. That is, the cabinet volume in the embodiment of the present invention is relatively small and easy to install.

[0015] (2) In one embodiment, the heat sink is simultaneously fixed by the first support frame at the top and the second support frame at the bottom inside the cabinet, which ensures high stability of the heat sink inside the cabinet. Since the resistor is attached to the surface of the heat sink, the stability of the resistor can be guaranteed.

[0016] (3) In one embodiment, the first support frame has ventilation holes and the second support frame has ventilation holes. Cold air enters from the bottom of the cabinet, passes through the ventilation holes of the second support frame, the heating element between the second support frame and the first support frame, and the ventilation holes on the first support frame. At this time, the temperature of the cold air increases and becomes hot air. The hot air is discharged from the top of the cabinet, thereby taking away the heat inside the cabinet and improving the heat dissipation effect of the cabinet.

[0017] (4) In one embodiment, a space is formed between the first support frame and the second support frame, which is called the first space. The filter coil structure is set in the first space, so that the various parts of the filter are deployed in a concentrated manner, further reducing the volume occupied.

[0018] (5) In one embodiment, in addition to ventilation holes, a large-sized hollow part is provided on the first support frame and the second support frame. This hollow part will not block the airflow and further increase the heat dissipation effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram showing the deployment of various parts inside the cabinet of an integrated filter in one embodiment of the present invention; Figure 2 This is a schematic diagram of the connection of the resistor, heat sink, and second support frame from one perspective in one embodiment of the present invention; Figure 3 This is a schematic diagram of the connection of the resistor, heat sink, and second support frame from another perspective in one embodiment of the present invention.

[0021] Figure label: Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In a first aspect, embodiments of the present invention provide an integrated filter.

[0024] See Figure 1 , Figure 2 and Figure 3 The integrated filter includes a cabinet and a heat sink 10, a resistor 20, and a support structure disposed inside the cabinet; wherein the resistor 20 is attached to the surface of the heat sink 10; the support structure is fixedly connected to the heat sink 10, and the support structure is used to fix and support the heat sink 10 inside the cabinet.

[0025] The supporting structure serves to fix the heat sink 10 inside the cabinet, ensuring that the heat sink 10 will not shift or shake due to the movement of the cabinet, thereby improving the stability of the heat-generating components inside the cabinet.

[0026] Because a heat sink 10 is installed inside the cabinet, and the resistor 20 is attached to the surface of the heat sink 10, the heat sink 10 dissipates heat from the resistor 20. This heat dissipation measure improves the heat dissipation performance of the integrated filter, thus eliminating the need for bulky steel grid resistors or heat pipe resistors for the resistor 20. Since a smaller resistor can be used, the size of the cabinet can be reduced; that is, the cabinet in this embodiment is smaller and easier to install.

[0027] In fact, although steel grid resistors or heat pipe resistors are relatively large, meaning they have a large heat dissipation area, they also suffer from significant power loss. Electrical energy is converted into heat, which cannot be quickly dissipated from the cabinet. Therefore, the inability to dissipate heat in a timely manner may reduce the lifespan of other heat-generating components inside the cabinet. However, in this embodiment of the invention, by setting up a heat sink 10 and attaching the resistor 20 to its surface, it is unnecessary to use a large resistor. Instead, a smaller heat sink with lower power loss can be used. This not only reduces the size of the cabinet but also extends the lifespan of other heat-generating components inside the cabinet.

[0028] In one embodiment, the support structure includes a first support frame 31 and a second support frame 32; wherein the first support frame 31 is located at the top of the cabinet interior, and the second support frame 32 is located at the bottom of the cabinet interior; the first support frame 31 is used to be fixedly connected to one end of the heat sink 10, and the second support frame 32 is used to be fixedly connected to the other end of the heat sink 10, so that the center line of the plane where the heat sink 10 is located extends in the vertical direction.

[0029] In other words, a first support frame 31 is provided at the top of the cabinet, and a second support frame 32 is provided at the bottom of the cabinet. The two ends of the heat dissipation plate 10 are fixedly connected to the first support frame 31 and the second support frame 32 respectively. This makes the center line of the plane where the heat dissipation plate 10 is located extend in the vertical direction. The vertical direction refers to the direction from the top to the bottom of the cabinet or from the bottom to the top of the cabinet.

[0030] As can be seen, by simultaneously fixing the heat sink 10 with the first support frame 31 at the top and the second support frame 32 at the bottom inside the cabinet, the heat sink 10 can be guaranteed to have high stability inside the cabinet. Since the resistor 20 is attached to the surface of the heat sink 10, the stability of the resistor 20 can be guaranteed.

[0031] In one embodiment, the integrated filter may further include: a base plate 40 disposed inside the cabinet; wherein the base plate 40 is a grid structure formed by a hollow portion and a non-hollow portion, and the second support frame 32 is fixedly installed on the base plate 40.

[0032] In other words, a base plate 40 is also provided at the bottom of the cabinet interior, and the second support frame 32 is placed on the base plate 40. The base plate 40 has a grid structure, which is formed by open and non-open sections. The base plate 40 increases the stability of the second support frame 32, thereby ensuring the stability of each part on the second support frame 32. Moreover, since the base plate 40 has a grid structure, it will not affect the heat dissipation of the heat-generating components inside the cabinet.

[0033] In addition to resistor 20, the heating component may also include filter coil structure 50, which will be described later.

[0034] In one embodiment, the top and bottom of the cabinet are grid structures formed by perforated and non-perforated portions. That is, the top and bottom of the cabinet are grid structures, which improves heat dissipation.

[0035] In one embodiment, both the first support frame 31 and the second support frame 32 are provided with ventilation holes; wherein, cold air entering from the bottom of the cabinet passes sequentially through the ventilation hole 321 on the second support frame 32, the heating component located between the second support frame 32 and the first support frame 31, and the ventilation hole on the first support frame 31 to become hot air, and the hot air is discharged from the top of the cabinet.

[0036] In other words, the first support frame 31 has ventilation holes, and the second support frame 32 has ventilation holes 321. Cold air enters from the bottom of the cabinet, passes through the ventilation holes of the second support frame 32, the heating element between the second support frame 32 and the first support frame 31, and the ventilation holes on the first support frame 31. At this time, the temperature of the cold air increases, and it becomes hot air. The hot air is discharged from the top of the cabinet, thereby removing the heat from the cabinet and improving the heat dissipation effect of the cabinet.

[0037] In one embodiment, the integrated filter may further include a fan disposed outside the cabinet, the fan being located below the bottom of the cabinet, and the fan being used to blow cold air into the cabinet.

[0038] In other words, a fan can be installed on the outside of the cabinet, positioned below the bottom of the cabinet. The fan blows cool air into the cabinet from the bottom and then exhausts it from the top, thus removing heat from inside the cabinet. By adding a fan, the heat dissipation rate can be increased.

[0039] In one embodiment, the integrated filter further includes a filter coil structure 50, which is disposed in a first space, the first space being the space between the first support frame 31 and the second support frame 32.

[0040] Among them, the filter coil structure 50 is actually a reactor. A reactor is a component that acts as an impedance in a circuit and is a heat-generating component. In essence, a reactor is a hollow coil without magnetic material.

[0041] That is, there are two sources of heat: resistor 20 and filter coil structure 50. Resistor 20 can dissipate heat not only through heat sink 10, but also through airflow. Filter coil structure 50 primarily dissipates heat through airflow; since both the first support frame 31 and the second support frame 32 are equipped with vents, the heat generated by filter coil structure 50 can be promptly removed.

[0042] A space is formed between the first support frame 31 and the second support frame 32, which is called the first space. The filter coil structure 50 is set in the first space, so that the various parts of the filter are deployed in a concentrated manner, reducing the volume occupied.

[0043] In one embodiment, the first support frame 31 and the second support frame 32 are further provided with hollowed-out portions, the size of which is larger than the size of the vent hole. Figure 2 and Figure 3 In the middle, the hollow part on the second support frame is marked as 322.

[0044] As can be seen, in addition to ventilation holes, the first support frame 31 and the second support frame 32 also have large-sized hollow parts. These hollow parts do not obstruct airflow and further increase the heat dissipation effect.

[0045] In one embodiment, the heat sink 10 is a metal plate with a surface coated with a heat dissipation material.

[0046] The metal plate can be a copper plate or an aluminum plate.

[0047] It is evident that the metal plate is a thermally conductive material, and the surface of the metal plate is also coated with a heat-dissipating material, which can further improve the heat dissipation effect.

[0048] In one embodiment, the resistor 20 is a strip resistor that is attached to the surface of the heat sink 10 in the vertical direction.

[0049] That is, resistor 20 can be a small strip resistor, for example, in Figure 2 and Figure 3 In the cabinet, three strip resistors are deployed on the surface of the heat sink 10, and these three strip resistors are attached to the surface of the heat sink 10 in the vertical direction, which further improves the concentration of the deployment inside the cabinet.

[0050] In a real-world scenario, a thermal simulation system was performed based on the integrated filter provided in this embodiment of the invention. It was found that the temperatures of the insulating materials in the electrical system, as demonstrated in the thermal simulation, all met the requirements for insulation applications. Through the design of the support structure and the air duct formed by the vents in the integrated filter, optimal airflow and heat source cooling effects were achieved. In other words, the thermal simulation temperature distribution was verified, proving that it meets the requirements for practical applications.

[0051] In summary, the integrated filter provided by this invention not only reduces cabinet size, saving customers more space, and simplifies assembly, reducing production time, but also improves heat dissipation through various heat dissipation measures. Furthermore, it offers a wide range of resistor types to choose from.

[0052] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0053] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated filter, characterized in that, The device includes a cabinet and a heat sink, a resistor, and a support structure disposed inside the cabinet. The resistor is mounted on the surface of the heat sink. The support structure is fixedly connected to the heat sink and is used to provide fixed support for the heat sink inside the cabinet.

2. The integrated filter according to claim 1, characterized in that, The support structure includes a first support frame and a second support frame; wherein the first support frame is located at the top of the cabinet interior and the second support frame is located at the bottom of the cabinet interior; the first support frame is used to be fixedly connected to one end of the heat sink and the second support frame is used to be fixedly connected to the other end of the heat sink, so that the center line of the plane where the heat sink is located extends in the vertical direction.

3. The integrated filter according to claim 2, characterized in that, The integrated filter further includes a base plate disposed inside the cabinet; wherein the base plate is a grid structure formed by hollowed-out portions and non-hollowed-out portions, and the second support frame is fixedly installed on the base plate.

4. The integrated filter according to claim 2, characterized in that, The top and bottom of the cabinet are grid structures formed by openwork and non-openwork parts.

5. The integrated filter according to claim 4, characterized in that, Both the first support frame and the second support frame are provided with ventilation holes; wherein, the cold air entering from the bottom of the cabinet passes through the ventilation holes on the second support frame, the heating element located between the second support frame and the first support frame, and the ventilation holes on the first support frame in sequence to become hot air, and the hot air is discharged from the top of the cabinet.

6. The integrated filter according to claim 5, characterized in that, The integrated filter also includes a fan disposed outside the cabinet, the fan being located below the bottom of the cabinet, and the fan being used to blow cold air into the cabinet.

7. The integrated filter according to claim 2, characterized in that, The integrated filter also includes a filter coil structure, which is disposed in a first space, the first space being the space between the first support frame and the second support frame.

8. The integrated filter according to claim 5, characterized in that, The first support frame and the second support frame are also provided with hollowed-out portions, the size of which is larger than the size of the vent hole.

9. The integrated filter according to claim 1, characterized in that, The heat sink is a metal plate with a surface coated with a heat dissipation material.

10. The integrated filter according to claim 1, characterized in that, The resistor is a strip resistor that is attached to the surface of the heat sink in the vertical direction.

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