Integrated filter
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- SIEMENS AG
- Filing Date
- 2023-08-29
- Publication Date
- 2026-06-03
AI Technical Summary
Existing filters in inverter electric power systems require large volumes due to the use of steel grid or heat pipe resistors, leading to increased cabinet size and potential heat dissipation issues.
An integrated filter design that includes a cabinet body, a heat dissipating plate, a resistor adhered to the plate, and a supporting structure to stabilize the plate, allowing for improved heat dissipation and reduced volume.
The integrated filter achieves reduced cabinet volume, enhanced heat dissipation performance, and increased stability of the heat generating components, thereby extending their lifespan and improving overall system efficiency.
Smart Images

Figure CN2023115553_06032025_PF_FP_ABST
Abstract
Description
Integrated FilterTECHNICAL FIELD
[0001] The present invention relates to a technical field of filters, and specifically to an integrated filter.BACKGROUND OF THE INVENTION
[0002] In an inverter electric power system, a filter is generally used to reduce the peak voltage value. Currently, the filter generally uses a steel grid resistor or a heat pipe resistor therein. These types of resistors have a relatively large volume, resulting in that the volume of the electrical cabinet of the whole filter is relatively large.SUMMARY OF THE INVENTION
[0003] In embodiments of the present invention, an integrated filter is provided, which can reduce a volume of an electrical cabinet.
[0004] An integrated filter as provided in an embodiment of the present invention comprises a cabinet body, and a heat dissipating plate, a resistor and a supporting structure provided in the cabinet body, wherein the resistor is adhered and mounted on a surface of the heat dissipating plate, and the supporting structure is fixedly connected with the heat dissipating plate and is used for fixedly supporting the heat dissipating plate in the cabinet body.
[0005] In an embodiment, the supporting structure comprises a first supporting bracket and a second supporting bracket, wherein the first supporting bracket is at a top in the cabinet body and the second supporting bracket is at a bottom in the cabinet body; the first supporting bracket is used for fixedly connected with an end of the heat dissipating plate and the second supporting bracket is used for fixedly connected with another end of the heat dissipating plate such that the heat dissipating plate is in a plane having a central axis extending vertically.
[0006] In an embodiment, the integrated filter further comprises a bottom plate provided in the cabinet body, wherein the bottom plate has a grid structure formed by a hollow-out portion and a non-hollow-out portion, and the second supporting bracket is fixedly mounted on the bottom plate.
[0007] In an embodiment, each of a top and a bottom of the cabinet body has a grid structure formed by a hollow-out portion and a non-hollow-out portion.
[0008] In an embodiment, each of the first supporting bracket and the second supporting bracket is provided thereon with a ventilation hole, wherein cold air entering from the bottom of the cabinet body passes in sequence through the ventilation hole on the second supporting bracket, a heat generating component between the second supporting bracket and the first supporting bracket, and the ventilation hole on the first supporting bracket, and then becomes hot air which exits from the top of the cabinet body.
[0009] In an embodiment, the integrated filter further comprises a blower provided outside the cabinet body, the blower is provided below the bottom of the cabinet body and is used for blowing cold air into the cabinet body.
[0010] In an embodiment, the integrated filter further comprises a filter coil structure provided in a first space which is a space between the first supporting bracket and the second supporting bracket.
[0011] In an embodiment, each of the first supporting bracket and the second supporting bracket is provided thereon with a hollow-out portion which is larger in size than the ventilation hole.
[0012] In an embodiment, the heat dissipating plate is a metal plate coated on its surface with a heat dissipating material.
[0013] In an embodiment, the resistor is a strip-shape resistor which is adhered vertically on the surface of the heat dissipating plate.
[0014] The integrated filters as provided in the embodiments of the present invention, individually or in combination, can have the following technical effects:
[0015] (1) As the cabinet body is provided therein with the heat dissipating plate and the resistor is adhered on the surface of the heat dissipating plate, the heat dissipation of the resistor is performed by the heat dissipating plate by which the heat dissipation performance of the integrated filter can be improved. Therefore, it is not necessary for the resistor to use a relatively large steel grid resistor or a heat pipe resistor. As it is possible to use a resistor relatively small in volume, the volume of the cabinet body to be used can be reduced. That is, the volume of the cabinet body in the embodiments of the present invention will be relatively small, facilitating mounting.
[0016] (2) In an embodiment, the heat dissipating plate is fixed by both the first supporting bracket at the top and the second supporting bracket at the bottom in the cabinet body, and it can be ensured that the heat dissipating plate has a very high stability in the cabinet body. As the resistor is adhered on the surface of the heat dissipating plate, the stability of the resistor can be ensured.
[0017] (3) In an embodiment, the first supporting bracket is provided thereon with the ventilation hole and the second supporting bracket is provided thereon with the ventilation hole. The cold air entering from the bottom of the cabinet body passes through the ventilation hole on the second supporting bracket, a heat generating component between the second supporting bracket and the first supporting bracket, and the ventilation hole on the first supporting bracket. At this time, the cold air has a higher temperature and thus becomes hot air. The hot air exits from the top of the cabinet body, thus taking away the heat in the cabinet body and improving the heat dissipation effect of the cabinet body.
[0018] (4) In an embodiment, a space is formed between the first supporting bracket and the second supporting bracket, called a first space. The filter coil structure is provided in the first space. Thus, various portions of the filter are arranged together, further reducing the volume as occupied.
[0019] (5) In an embodiment, in addition to the ventilation hole, the hollow-out portion having a relatively large size is further provided on the first supporting bracket and the second supporting bracket. Thus, the hollow-out portion will not block air flow, further improving the heat dissipation effect.
[0020] DESCRIPTION OF THE DRAWINGS
[0021] In order to explain the technical solutions in the embodiments of the present invention or in the prior art more clearly, the figures necessary to be used for description in the embodiments or in the prior art will be briefly introduced as below. Apparently, the figures for the description below are for some embodiments in the present invention. Based on these figures, those skilled in the art can obtain other figures without any inventive work.
[0022] Figure 1 is an arrangement diagram of various portions in a cabinet body of an integrated filter in an embodiment of the present invention.
[0023] Figure 2 is a connection diagram of a resistor, a heat dissipating plate and a second supporting bracket from a perspective in an embodiment of the present invention.
[0024] Figure 3 is a connection diagram of a resistor, a heat dissipating plate and a second supporting bracket from another perspective in an embodiment of the present invention.
[0025] Reference numerals:
[0026] DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0027] In order to make the objective (s) , technical solutions and advantages of embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely hereinafter in connection with the figures in the embodiments of the present invention. Apparently, the described embodiments are some embodiments in the present invention, rather than all embodiments. Any other embodiments obtained based on the embodiments in the present invention by those skilled in the art without any inventive work will fall within the protection scope of the present invention.
[0028] In a first aspect, an integrated filter is provided in an embodiment of the present invention.
[0029] Referring to figures 1, 2 and 3, the integrated filter comprises a cabinet body, and a heat dissipating plate 10, a resistor 20 and a supporting structure provided in the cabinet body, wherein the resistor 20 is adhered and mounted on a surface of the heat dissipating plate 10, and the supporting structure is fixedly connected with the heat dissipating plate 10 and is used for fixedly supporting the heat dissipating plate 10 in the cabinet body.
[0030] Herein, the supporting structure functions to fixedly mount the heat dissipating plate 10 in the cabinet body, ensuring that the heat dissipating plate 10 will not move or shake due to movement of the cabinet body, thus improving stability of the heat generating component in the cabinet body.
[0031] As the cabinet body is provided therein with the heat dissipating plate 10 and the resistor 20 is adhered on the surface of the heat dissipating plate 10, the heat dissipation of the resistor 20 is performed by the heat dissipating plate 10 by which the heat dissipation performance of the integrated filter can be improved. Therefore, it is not necessary for the resistor 20 to use a relatively large steel grid resistor or a heat pipe resistor. As it is possible to use a resistor relatively small in volume, the volume of the cabinet body to be used can be reduced. That is, the volume of the cabinet body in the embodiments of the present invention will be relatively small, facilitating mounting.
[0032] In practice, though the steel grid resistor or the heat pipe resistor is large in volume (i.e. the resistors have a relatively large heat dissipation area) , the power loss is relatively high and the electrical energy loss is converted into thermal energy which actually can not be dissipated rapidly out of the cabinet body. Therefore, the lives of other heat generating components in the cabinet body may be shortened due to failure in timely heat dissipation. However, in the embodiments of the present invention, the heat dissipating plate 10 is provided and the resistor 20 is adhered on the surface of the heat dissipating plate 10, thus it is not necessary use a resistor having a relatively large volume. Rather, it is possible to use a heat dissipater having a relatively small volume and a relatively low power loss. Thus, not only the volume of the cabinet body can be reduced, but also the use lives of other heat generating component in the cabinet body can be longer.
[0033] In an embodiment, the supporting structure comprises a first supporting bracket 31 and a second supporting bracket 32, wherein the first supporting bracket 31 is at a top in the cabinet body and the second supporting bracket 32 is at a bottom in the cabinet body; the first supporting bracket 31 is used for fixedly connected with an end of the heat dissipating plate 10 and the second supporting bracket 32 is used for fixedly connected with another end of the heat dissipating plate 10 such that the heat dissipating plate 10 is in a plane having a central axis extending vertically.
[0034] That is, the first supporting bracket 31 is provided at the top in the cabinet body, the second supporting bracket 32 is provided at the bottom in the cabinet body, and two ends of the heat dissipating plate 10 are fixedly connected with the first supporting bracket 31 and the second supporting bracket 32, respectively, such that the heat dissipating plate 10 is in a plane having a central axis extending in a vertical direction. The vertical direction refers to a direction from top to bottom in the cabinet body or a direction from bottom to top in the cabinet body.
[0035] As can be seen, the heat dissipating plate 10 is fixed by both the first supporting bracket 31 at the top and the second supporting bracket 32 at the bottom in the cabinet body, and it can be ensured that the heat dissipating plate 10 has a very high stability in the cabinet body. As the resistor 20 is adhered on the surface of the heat dissipating plate 10, the stability of the resistor 20 can be ensured.
[0036] In an embodiment, the integrated filter may further comprise a bottom plate 40 provided in the cabinet body, wherein the bottom plate 40 has a grid structure formed by a hollow-out portion and a non-hollow-out portion, and the second supporting bracket 32 is fixedly mounted on the bottom plate 40.
[0037] That is, the bottom plate 40 is further provided at the bottom in the cabinet body 40, and the second supporting bracket 32 is provided on the bottom plate 40. Moreover, the bottom plate 40 has a grid structure formed by a hollow-out portion and a non-hollow-out portion. The bottom plate 40 is used to improve the stability of the second supporting bracket 32, further ensuring the stability of various portions on the second supporting bracket 32. Furthermore, as the bottom plate 40 has a grid structure, it will not affect heat dissipation of various heat generating components in the cabinet body.
[0038] Herein, in addition to the resistor 20, the heat generating component may further comprise a filter coil structure 50 which will be introduced hereinafter.
[0039] In an embodiment, each of a top and a bottom of the cabinet body has a grid structure formed by a hollow-out portion and a non-hollow-out portion. That is, the top of the cabinet body has a grid structure, and the bottom of the cabinet body also has a grid structure. Thus, the heat dissipation effect can be improved.
[0040] In an embodiment, each of the first supporting bracket 31 and the second supporting bracket 32 is provided thereon with a ventilation hole, wherein cold air entering from the bottom of the cabinet body passes in sequence through the ventilation hole 321 on the second supporting bracket 32, a heat generating component between the second supporting bracket 32 and the first supporting bracket 31, and the ventilation hole on the first supporting bracket 31, and then becomes hot air which exits from the top of the cabinet body.
[0041] That is, the first supporting bracket 31 is provided thereon with the ventilation hole and the second supporting bracket 32 is provided thereon with the ventilation hole 321. The cold air entering from the bottom of the cabinet body passes through the ventilation hole on the second supporting bracket 32, a heat generating component between the second supporting bracket 32 and the first supporting bracket 31, and the ventilation hole on the first supporting bracket 31. At this time, the cold air has a higher temperature and thus becomes hot air. The hot air exits from the top of the cabinet body, thus taking away the heat in the cabinet body and improving the heat dissipation effect of the cabinet body.
[0042] In an embodiment, the integrated filter may further comprise a blower provided outside the cabinet body, the blower is provided below the bottom of the cabinet body and is used for blowing cold air into the cabinet body.
[0043] That is, it is possible to provide a blower outside the cabinet body, the blower is provided below the bottom of the cabinet body and is used for blowing cold air from the bottom of the cabinet body into the cabinet body, and in turn discharging it from the top of the cabinet body, thus taking away the heat in the cabinet body. By adding the blower, the heat dissipation speed can be improved.
[0044] In an embodiment, the integrated filter further comprises a filter coil structure 50 provided in a first space which is a space between the first supporting bracket 31 and the second supporting bracket 32.
[0045] Herein, filter coil structure 50 is actually a reactor. The reactor is a component having an impedance function in the circuit and is a type of heat generating component. The reactor is essentially a hollow coil without a magnetically conductive material.
[0046] That is, the heat comes from two sources: the resistor 20 and the filter coil structure 50. For the resistor 20, it is possible to perform heat dissipation not only by the heat dissipating plate 10, but also by air flowing to take away the heat. For the filter coil structure 50, the heat is taken away mainly by air flowing. As each of the first supporting bracket 31 and the second supporting bracket 32 is provided thereon with the ventilation hole, it is possible to take away the heat produced by the filter coil structure 50 in time.
[0047] Herein, a space is formed between the first supporting bracket 31 and the second supporting bracket 32, called a first space. The filter coil structure 50 is provided in the first space. Thus, various portions of the filter are arranged together, further reducing the volume as occupied.
[0048] In an embodiment, each of the first supporting bracket 31 and the second supporting bracket 32 is provided thereon with a hollow-out portion which is larger in size than the ventilation hole. In figures 2 and 3, the hollow-out portion on the second supporting bracket is marked as 322.
[0049] As can be seen, in addition to the ventilation hole, the hollow-out portion having a relatively large size is further provided on the first supporting bracket 31 and the second supporting bracket 32. Thus, the hollow-out portion will not block air flow, further improving the heat dissipation effect.
[0050] In an embodiment, the heat dissipating plate 10 is a metal plate coated on its surface with a heat dissipating material.
[0051] Herein, the metal plate may be a copper plate or an aluminum plate.
[0052] As can be seen, the metal plate is of a heat conductive material. Moreover, the metal plate may be coated on its surface with a heat dissipating material, and it is possible to further improve the heat dissipation effect.
[0053] In an embodiment, the resistor 20 is a strip-shape resistor which is adhered vertically on the surface of the heat dissipating plate 10.
[0054] That is, the resistor 20 may use a strip-shape resistor having a relatively small volume. For example, in figures 2 and 3, three strip-shape resistors are arranged on the surface of the heat dissipating plate 10, and the three strip-shape resistors are adhered in a vertical direction on the surface of the heat dissipating plate 10, further improving centralization of the arrangement in the cabinet body.
[0055] In practical circumstances, based on the integrated filters as provided in the embodiments of the present invention, thermal simulation is performed by a simulation system. It can be seen that the temperature of the insulation material in the electrical system according to the result of the thermal simulation meets the application requirement for insulation. By the designs for the supporting structure and the air channel formed by the ventilation holes in the integrated filter, the effects of both the wind speed and the heat source cooling achieve the best results. That is, the thermal simulation temperature distribution is verified, proving that it can meet the requirement for practical applications.
[0056] In sum, the integrated filter (s) as provided in the embodiment (s) of the present invention not only can reduce the volume of the cabinet body to save more space for the clients, but also can reduce the production working hours due to relatively simple assembling. In addition, it is possible to improve heat dissipating effect by various heat dissipating means. Moreover, there is a relatively wide range for selection of the type of the resistor.
[0057] The embodiments in the present description are described in a gradually progressive manner. The same or similar portions between different embodiments can be referred to each other. Each embodiment emphasizes in explaining the difference (s) with respect to other embodiment (s) . In particular, as the apparatus / device embodiments are substantially similar to the method embodiments, the description thereof is relatively simple, and the description of the method embodiments may be referred to for the related portions.
[0058] With the above-described specific embodiments, the purposes, technical solutions and beneficial effects of the present invention are further explained in detail. It should be understood that the above description is only for specific embodiments in the present invention, not for defining the protection scope of the present invention. Any variation, equivalent substitution or improvement made based on the technical solutions of the present invention will fall within the protection scope of the present invention.
Claims
1.An integrated filter, characterized in that it comprises a cabinet body, and a heat dissipating plate, a resistor and a supporting structure provided in the cabinet body, wherein the resistor is adhered and mounted on a surface of the heat dissipating plate, and the supporting structure is fixedly connected with the heat dissipating plate and is used for fixedly supporting the heat dissipating plate in the cabinet body.2.The integrated filter according to claim 1, characterized in that the supporting structure comprises a first supporting bracket and a second supporting bracket, wherein the first supporting bracket is at a top in the cabinet body and the second supporting bracket is at a bottom in the cabinet body; the first supporting bracket is used for fixedly connected with an end of the heat dissipating plate and the second supporting bracket is used for fixedly connected with another end of the heat dissipating plate such that the heat dissipating plate is in a plane having a central axis extending vertically.3.The integrated filter according to claim 2, characterized in that the integrated filter further comprises a bottom plate provided in the cabinet body, wherein the bottom plate has a grid structure formed by a hollow-out portion and a non-hollow-out portion, and the second supporting bracket is fixedly mounted on the bottom plate.4.The integrated filter according to claim 2, characterized in that each of a top and a bottom of the cabinet body has a grid structure formed by a hollow-out portion and a non-hollow-out portion.5.The integrated filter according to claim 4, characterized in that each of the first supporting bracket and the second supporting bracket is provided thereon with a ventilation hole, wherein cold air entering from the bottom of the cabinet body passes in sequence through the ventilation hole on the second supporting bracket, a heat generating component between the second supporting bracket and the first supporting bracket, and the ventilation hole on the first supporting bracket, and then becomes hot air which exits from the top of the cabinet body.6.The integrated filter according to claim 5, characterized in that the integrated filter further comprises a blower provided outside the cabinet body, the blower is provided below the bottom of the cabinet body and is used for blowing cold air into the cabinet body.7.The integrated filter according to claim 2, characterized in that the integrated filter further comprises a filter coil structure provided in a first space which is a space between the first supporting bracket and the second supporting bracket.8.The integrated filter according to claim 5, characterized in that each of the first supporting bracket and the second supporting bracket is provided thereon with a hollow-out portion which is larger in size than the ventilation hole.9.The integrated filter according to claim 1, characterized in that the heat dissipating plate is a metal plate coated on its surface with a heat dissipating material.10.The integrated filter according to claim 1, characterized in that the resistor is a strip-shape resistor which is adhered vertically on the surface of the heat dissipating plate.